EP0913330A1 - Apparatus for making a cut in the wrapper of a moving load - Google Patents

Apparatus for making a cut in the wrapper of a moving load Download PDF

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Publication number
EP0913330A1
EP0913330A1 EP97203258A EP97203258A EP0913330A1 EP 0913330 A1 EP0913330 A1 EP 0913330A1 EP 97203258 A EP97203258 A EP 97203258A EP 97203258 A EP97203258 A EP 97203258A EP 0913330 A1 EP0913330 A1 EP 0913330A1
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EP
European Patent Office
Prior art keywords
pallet
burden
perforation
finger
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97203258A
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German (de)
French (fr)
Inventor
Cyriaque Petitjean
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CEFMA SAS
Original Assignee
CEFMA SAS
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Filing date
Publication date
Application filed by CEFMA SAS filed Critical CEFMA SAS
Priority to EP97203258A priority Critical patent/EP0913330A1/en
Publication of EP0913330A1 publication Critical patent/EP0913330A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/06—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers
    • B65D71/08—Wrappers shrunk by heat or under tension, e.g. stretch films or films tensioned by compressed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/182—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tear-strips or tear-tapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements

Definitions

  • the invention relates to a device for making a cut in the envelope of a scrolling burden.
  • It relates more particularly to the field of bundling of batches various elements or containers, such as bottles or boxes, by means of a strip of film wrapped around the batch and heat-shrunk on it to ensure the reunion of its components.
  • the object of the present invention is to facilitate the tearing of a burden in providing a device that fits into a bundling chain and allows cut into the envelope of a moving burden.
  • the device comprises, on the one hand, a conveyor ensuring the movement of the loads, continuously and with a constant interval, and, on the other hand, a palette carrying at each end a finger perforator, this pallet being wedged in the middle on a rotary shaft connected to a means motor capable of rotating it by a fraction of a turn between two positions, namely, a perforation position, in which one of his fingers is in the path of a burden and protrudes towards the front face of this burden, and a position erasure, in which his fingers are out of the path of the burden.
  • This perforation means allows a cut to be made in the area of a envelope with a tear strip previously placed on the envelope or on the load, for example to facilitate gripping the ends of this strip, or more simply, directly in the envelope, when it is made of a material easily tearable synthetic.
  • FIG. 1 represents, in general, a burden A composed of two rows of three cylindrical containers 2 joined by a film 3 and comprising a grip 4 and a tear strip 5.
  • the containers 2, grouped in batches pass through a bundling device where the film 2 is wound in a loop around them before passing through a heating tunnel providing heat shrinkage of this film on the containers.
  • the grip handle 4 is adhesive, at least on its face turned towards the burden, and is attached to this burden, when stationary or in scrolling, by various means well known to those skilled in the art, which do not need to be described here.
  • the tear strip 5 which is attached to the stop or in scrolling against one of the front faces 6 of the burden, it is put in place by a device similar or identical to that described in FR-A-2 731 406
  • the burden A comprises, in the face front 6 supporting the tear strip 5, a cutout 7 passing through the film 3 and the strip 5.
  • This cut 7 has the general shape of an I, that is to say is composed of a vertical bar 7a, extending on either side of the tear strip 5, and two transverse bars 7b, parallel to the tear strip 5 and arranged on either side on the other, so as to delimit two tear-off tabs 9a, 9b.
  • This cutout 7 is positioned vertically, in relation to the position of the tear strip 5 which itself may be higher or lower or higher or lower, so as not to hide the inscriptions on containers 2 and legible in transparency through the film 3. It is positioned transversely in the interval 11 between two cylindrical containers, so that this interval forms a gripping space allowing the engagement of the index when the user wants open the load by tearing the envelope.
  • the tear is done by introducing the index between the slots 7a, 7b and bringing it back against the rear face of one of the two tear-off tabs 9a or 9b, to pinch this tab between the index finger and the thumb, before tearing by pulling the tab outwards away from the cutting.
  • the tongue has original two breaking primers which facilitate the tearing of the film and then allows, the tear strip 5, to play its normal tear function by its two edges longitudinal.
  • the containers 2a are constituted by parallelepipedic boxes which, joined edge to edge by the envelope 3 bundling, are provided, during their conformation, with local reserves 10, such as cut sides or inverted dihedrons.
  • the reserves 10 of two juxtaposed boxes form together and inside the burden, a gripping space necessary for the cutting and the passage of the index finger one or the other gripping the tear-off tabs 9a and 9b.
  • This installation comprises, downstream of a batching station, a shrink wrapping station and a station for laying a handle 4, not shown, a station B laying a tear strip and a station C for cutting.
  • item B is identical to that described in FR-A-2 731 406. It comprises above the trajectory of the burdens A, moved by a conveyor belt 12, continuously and in the direction of the arrow 13, a rotary plate 14 carrying several radial yokes 15. On each yoke, are articulated around a horizontal axis 16 two levers, namely with respect to the direction of rotation of the plate 14 defined by the arrow 17, an upstream lever 18 and a downstream lever 19. These two levers are provided, at one of their ends, rollers 20 and 22 suitable for cooperate with ramps 23 and 24 fixed above the tray by consoles 25. Each upstream lever 18 is extended, opposite its roller 20, by two rods parallel 26. Each has an extreme cylindrical bearing 27. The downstream lever 19 has, opposite its roller 22, an extension parallel to the rods 26 of the lever upstream 18, this extension comprising a lateral return 28 which can come into contact with pinching with the cylindrical surface 27 of the rod 26 which is downstream.
  • This device also includes means, not shown, for support a reel 30 of a strip 32, adhesive on its face 32a, and the means of guiding and actuating a reciprocating knife 33 arranged at the start, B1 in FIG. 4, to cut the strip 32 between the cylindrical surfaces 26 of the lever 18, then disposed in a vertical position.
  • the plate 14 is equipped with four sampling sets arranged at 90 ° from each other and is connected to means motors 34 capable of rotating it, by 90 ° fraction of a turn, each time a burden A is detected by means not shown.
  • a section of adhesive strip 32a extends transversely to the direction of movement of a load, represented by the arrow 13 in FIG. 4, on the one hand, between the upstream range 27 of the lever 18 of the station B1 and, on the other hand, the downstream range 27 of the lever 18 disposed at station B2. It's obvious that the space between these two spans is sufficient to let the burden pass, so that the latter takes in passing the section 32a of adhesive tape. By continuing its trajectory, the burden passes between two vertical brushes 35, arranged laterally to it and pressing the ends of the section of adhesive strip 32a on its lateral blanks.
  • the plate 14 pivots 90 °, which has for the effect of unwinding the strip 32, the end of which is pinched at station B1 between the return 28 and the bearing surface 27 of the downstream rod 26 of the lever 18, from station B1 to station B2 and, simultaneously release the levers 18 and 19 of the B2 station by bringing them into position horizontal by cooperation of their rollers 20, 22 with the fixed ramp 23.
  • the knife 33 sections at station B1 the strip section which has been unwound from the coil 30.
  • the burden A which leaves this device is therefore provided with a strip of tear 5 stuck on the external face of its front wall 6. It is transferred to station C the belt conveyor 40 of which is made up of two separate parallel bands 40a, 40b by a longitudinal interval 40c used for housing the means carrying out the cuts.
  • these means are constituted by a pallet 42 which is wedged in the middle on a horizontal transverse shaft 43 disposed between the two strands of the belt conveyor 40.
  • the pallet 42 is provided with a perforating finger 44 which projects from its face facing the back when the finger is in the perforation position.
  • This finger has the shape of an I, it's to say is composed of a vertical blade 44a and two transverse blades 44b joined at the ends of this blade.
  • each finger on the pallet is determined for that, when the pallet is in the vertical position, the active upper finger 44 is at the level of the tear strip 5 of the burden.
  • Pallet 42 is itself positioned transversely so that the finger 44 is opposite a gripping space 11 delimited between two cylindrical containers 2 or delimited by the reserves 10 formed in parallelepiped boxes 2a ( Figure 2).
  • the shaft 43 is linked in rotation to a motor means and to a wedging means now the pallet 42 in the perforation position until a burden has been applied against the active piercing finger.
  • the driving means and the timing means are constituted by a brake gearmotor 45, fed through a control unit 46 reacting to a sensor 47 detecting the passage of a burden AT.
  • the pallet 42 When stopped, as shown in FIG. 5, the pallet 42 is maintained in vertical position by the brake gear motor 45, so that the load A movement on the conveyor 40 is impaled on the perforating finger 44.
  • the brake is released and the gearmotor 45 is powered to rotate the pallet 42 and bring it into the horizontal position , shown in dashed lines in Figure 5, allowing free passage of the burden A.
  • the pallet 42 is straightened vertically, in its perforation position, waiting for a new load, and the brake is applied to ensure its setting in rotation.
  • This simple device is very easily integrated into an existing installation and makes it possible to obtain burdens whose tearing of the envelope poses no problem.
  • the installation shown in Figure 6 differs from the previous one by the causes the station B for removing the tear strip 5a to be arranged immediately after the training station for the batch of several containers 2 and upstream of a bundling F and heat shrink tunnel G and, possibly, upstream of the station, not shown, ensuring the deposit of the handle 4.
  • station B deposits a section of strip 5a, which is adhesive on both sides so that the side which is posterior to the direction of travel of the conveyor, ensures temporary bonding of the strip 5a on the front row of containers 2, while the adhesive placed on the anterior face of the strip 5a ensures the bonding of this strip on the internal face of the front wall 6 of the envelope 3a, heat-shrunk on the container batch.
  • item C for carrying out the cutout 7 is arranged after the heat shrinking station G the envelope 3a and, possibly, after the station for fitting the handle 4, not represented. Except for this difference, item C is identical to that described in reference to Figures 3 to 5.
  • This form of execution is interesting insofar as it uses better the tearing effect provided by the edges of the tear strip 5a, since this is inside the envelope and is pulled out to go through this envelope.
  • FIGS. 7 and 8 differs from that in FIGS. 4 and 5 by the arrangement of the pallet 42 carrying two perforating fingers 44. Indeed, its rotary shaft 43a is vertical and is disposed laterally to a conveyor band 48. This shaft is linked in rotation to a brake gearmotor 45, supplied through a control unit 46 reacting to a sensor 47.
  • the device which has just been described in the case of its application to a installation carrying burdens with tear strip 5 or 5a, also applies to installations carrying out burdens without a tear strip but using envelopes of tearable synthetic material.

Abstract

A conveyor moves the loads (A) continuously with a constant gap between them. A pallet (42) carries at each end a perforating peg (44). The pallet is wedged in its middle on a rotating shaft (43) connected to a motor able to rotate it a fraction of a turn between two positions. The first is a perforation position in which a peg is in the path of the load and projects into the load front face. The second is a withdrawn position in which the pegs are outside the load path.

Description

L'invention est relative à un dispositif pour réaliser une découpe dans l'enveloppe d'un fardeau en défilement.The invention relates to a device for making a cut in the envelope of a scrolling burden.

Elle concerne plus particulièrement le domaine du fardelage de lots d'éléments ou de contenants divers, tels que bouteilles ou boítes, au moyen d'une bande de film enroulée autour du lot et thermorétractée sur lui pour assurer la réunion de ses composants.It relates more particularly to the field of bundling of batches various elements or containers, such as bottles or boxes, by means of a strip of film wrapped around the batch and heat-shrunk on it to ensure the reunion of its components.

Pour accéder aux éléments du lot, il faut déchirer la bande de film, par exemple en la saisissant par l'un des bords des deux ouvertures ménagées sur les côtés latéraux du lot. Or, la rétraction du film augmente la résistance des bords de ces ouvertures et rend le déchirage difficile.To access the elements of the batch, you must tear the film strip, by example by grasping it by one of the edges of the two openings on the sides side of the lot. However, the shrinkage of the film increases the resistance of the edges of these openings and makes tearing difficult.

Pour remédier à cela, il est connu, avant réalisation du fardeau, de rapporter sur la bande de film des bandes de déchirage adhésives disposées transversalement et avec un pas régulier. Cette technique impose, sur la machine de fardelage, de contrôler la position relative de la bande de film thermorétractable par rapport au lot d'éléments, à défaut de quoi la bande de déchirage peut être disposée en n'importe quelle zone du fardeau et par exemple près du col des récipients, ce qui présente de nombreux inconvénients au niveau de la rétraction, de l'esthétique et du déchirage. De plus, ces bandes de film ainsi équipées sont beaucoup plus onéreuses et augmentent donc le coût de fardelage.To remedy this, it is known, before carrying out the burden, to attach adhesive tear strips to the film strip transversely and with a regular step. This technique requires, on the machine to bundling, to check the relative position of the heat shrink film strip by relative to the batch of elements, failing which the tear-off strip may be arranged in any area of the burden and for example near the neck of the containers, which has many drawbacks in terms of shrinkage, aesthetics and scrapping. In addition, these film strips thus equipped are much more expensive and therefore increase the cost of wrapping.

Par ailleurs, lorsque le consommateur désire ouvrir le fardeau, il doit tirer sur l'extrémité de la bande de déchirage, équipée ou non d'une languette d'arrachage, afin que les bords longitudinaux de cette bande de déchirage, adhérant au film thermorétractable, forment dans ce film des découpes parallèles allant d'une ouverture latérale à l'autre ouverture et découpant l'enveloppe de liaison des éléments du lot. A l'usage, il s'avère que parfois les bords du film thermorétracté sont particulièrement résistants et cèdent difficilement et voire même pas du tout, à l'effort de déchirage qui leur est communiqué par la languette.Furthermore, when the consumer wishes to open the burden, he must draw on the end of the tear strip, whether or not fitted with a tear-off tab, so that the longitudinal edges of this tear strip, adhering to the film heat-shrinkable, form in this film parallel cuts going from an opening lateral to the other opening and cutting the connecting envelope of the elements of the lot. AT use, it turns out that sometimes the edges of the heat-shrunk film are particularly resistant and yield with difficulty and even not at all, to the scrapping effort which is communicated to them by the tongue.

Pour faciliter l'amorce du déchirage il est connu, comme décrit dans US A 3 403 779, de renforcer les extrémités des languettes de déchirage et de les séparer par une fente favorisant leur préhension. Ces deux opérations sont effectuées au moyen d'un outil chauffant exigeant l'arrêt du défilement des fardeaux et conduisant donc à une cadence de fardelage limitée.To facilitate the initiation of scrapping it is known, as described in US A 3,403,779, to reinforce the ends of the tear-off tabs and to separate by a slit favoring their grip. These two operations are performed at by means of a heating tool requiring the stopping of the shifting of the bundles and leading therefore at a limited shrinkage rate.

Une autre solution, divulguée par US-A-2 771 385, US-A-2 -656 273 et US A 2 837 938, consiste à réaliser la découpe sur le film équipé de la bande de déchirage avant que ce film enveloppe le fardeau. Cette technique ramène aux inconvénients inhérents au positionnement du film sur le fardeau, exposés ci-dessus. Another solution, disclosed by US-A-2,771,385, US-A-2 -656,273 and US A 2 837 938, consists in making the cut on the film equipped with the strip of tear before this film wraps the burden. This technique brings back to drawbacks inherent in the positioning of the film on the burden, described above.

La présente invention a pour objet de faciliter le déchirage d'un fardeau en fournissant un dispositif s'intégrant dans une chaíne de fardelage et permettant de réaliser une découpe dans l'enveloppe d'un fardeau en défilement.The object of the present invention is to facilitate the tearing of a burden in providing a device that fits into a bundling chain and allows cut into the envelope of a moving burden.

A cet effet, le dispositif selon l'invention comprend, d'une part, un convoyeur assurant le déplacement des fardeaux, de manière continue et avec un intervalle constant, et, d'autre part, une palette portant à chaque extrémité un doigt perforateur, cette palette étant calée en son milieu sur un arbre rotatif relié à un moyen moteur apte à la faire pivoter d'une fraction de tour entre deux positions, à savoir, une position de perforation, dans laquelle l'un de ses doigts est dans la trajectoire d'un fardeau et fait saillie en direction de la face frontale de ce fardeau, et une position d'effacement, dans laquelle ses doigts sont hors de la trajectoire du fardeau.To this end, the device according to the invention comprises, on the one hand, a conveyor ensuring the movement of the loads, continuously and with a constant interval, and, on the other hand, a palette carrying at each end a finger perforator, this pallet being wedged in the middle on a rotary shaft connected to a means motor capable of rotating it by a fraction of a turn between two positions, namely, a perforation position, in which one of his fingers is in the path of a burden and protrudes towards the front face of this burden, and a position erasure, in which his fingers are out of the path of the burden.

Avec cet agencement, le fardeau en déplacement sur le convoyeur vient s'embrocher sur le doigt perforateur qui, une fois la découpe réalisée, passe en position d'effacement pour laisser avancer le fardeau.With this arrangement, the burden moving on the conveyor comes to be inserted on the perforating finger which, once the cut has been made, goes into position to clear the burden.

Ce moyen de perforation permet de réaliser une découpe dans la zone d'une enveloppe comportant une bande de déchirage préalablement posée sur l'enveloppe ou sur le fardeau, par exemple pour faciliter la préhension des extrémités de cette bande, ou plus simplement, directement dans l'enveloppe, lorsqu'elle est réalisée dans une matière synthétique aisément déchirable.This perforation means allows a cut to be made in the area of a envelope with a tear strip previously placed on the envelope or on the load, for example to facilitate gripping the ends of this strip, or more simply, directly in the envelope, when it is made of a material easily tearable synthetic.

D'autres caractéristiques et avantages ressortiront de la description qui suit en référence au dessin schématique annexé représentant, à titre d'exemples, deux formes d'exécution d'un fardeau selon l'invention, et deux formes d'exécution de l'installation de fardelage mettant en oeuvre le dispositif pour réaliser la découpe.

  • Figure 1 est une vue partielle en perspective représentant un fardeau selon l'invention, composé de bouteilles cylindriques,
  • Figure 2 est une vue partielle de la partie inférieure d'un fardeau composé de boítes parallèlépipédiques,
  • Figure 3 est une vue en perspective d'une forme d'exécution du dispositif de réalisation de la découpe dans un fardeau,
  • Figure 4 est une vue en plan par dessus d'une installation de fardelage comportant application du dispositif de découpage selon l'invention,
  • Figure 5 est une vue de côté en élévation du dispositif montré à la figure 4,
  • Figure 6 est une vue de côté en élévation d'une autre installation de fardelage appliquant le dispositif de découpe selon l'invention,
  • Figures 7 et 8 sont des vues, respectivement, en plan par dessus et de côté en élévation, d'une autre forme d'exécution du dispositif de découpage.
    • Other characteristics and advantages will emerge from the description which follows with reference to the appended diagrammatic drawing representing, by way of examples, two embodiments of a burden according to the invention, and two embodiments of the installation wrapping using the device for cutting.
  • FIG. 1 is a partial perspective view showing a burden according to the invention, composed of cylindrical bottles,
  • FIG. 2 is a partial view of the lower part of a load made up of parallelepipedic boxes,
  • FIG. 3 is a perspective view of an embodiment of the device for making the cut in a bundle,
  • FIG. 4 is a plan view from above of a bundling installation comprising application of the cutting device according to the invention,
  • FIG. 5 is a side elevation view of the device shown in FIG. 4,
  • FIG. 6 is a side view in elevation of another wrapping installation applying the cutting device according to the invention,
  • Figures 7 and 8 are views, respectively in plan from above and side in elevation, of another embodiment of the cutting device.

    • La figure 1 représente, de manière générale, un fardeau A composé de deux rangées de trois récipients cylindriques 2 réunis par un film 3 et comportant une poignée de préhension 4 et une bande de déchirage 5. De façon connue, les récipients 2, groupés en lots, passent dans un dispositif de fardelage où le film 2 est enroulé en boucle autour d'eux avant de passer dans un tunnel de chauffage assurant la thermorétraction de ce film sur les récipients. La poignée de préhension 4 est adhésive, au moins sur sa face tournée en direction du fardeau, et est rapportée sur ce fardeau, à l'arrêt ou en défilement, par divers moyens bien connus de l'homme de l'art, qui n'ont pas besoin d'être décrits ici.FIG. 1 represents, in general, a burden A composed of two rows of three cylindrical containers 2 joined by a film 3 and comprising a grip 4 and a tear strip 5. In known manner, the containers 2, grouped in batches, pass through a bundling device where the film 2 is wound in a loop around them before passing through a heating tunnel providing heat shrinkage of this film on the containers. The grip handle 4 is adhesive, at least on its face turned towards the burden, and is attached to this burden, when stationary or in scrolling, by various means well known to those skilled in the art, which do not need to be described here.

    Quant à la bande de déchirage 5, qui est rapportée à l'arrêt ou en défilement contre l'une des faces frontales 6 du fardeau, elle est mise en place par un dispositif similaire ou identique à celui décrit dans FR-A-2 731 406As for the tear strip 5, which is attached to the stop or in scrolling against one of the front faces 6 of the burden, it is put in place by a device similar or identical to that described in FR-A-2 731 406

    Comme le montre bien la figure 1, le fardeau A comporte, dans la face frontale 6 supportant la bande de déchirage 5, une découpe 7 traversant le film 3 et la bande 5. Cette découpe 7 a la forme générale d'un I, c'est à dire est composée d'une barre verticale 7a, s'étendant de part et d'autre de la bande de déchirage 5, et de deux barres transversales 7b, parallèles à la bande de déchirage 5 et disposés de part et d'autre d'elle, de manière à délimiter deux languettes d'arrachage 9a, 9b.As Figure 1 clearly shows, the burden A comprises, in the face front 6 supporting the tear strip 5, a cutout 7 passing through the film 3 and the strip 5. This cut 7 has the general shape of an I, that is to say is composed of a vertical bar 7a, extending on either side of the tear strip 5, and two transverse bars 7b, parallel to the tear strip 5 and arranged on either side on the other, so as to delimit two tear-off tabs 9a, 9b.

    Cette découpe 7 est positionnée verticalement, en rapport avec la position de la bande de déchirage 5 qui, elle-même, peut être plus ou moins haute ou plus ou moins basse, de manière à ne pas masquer les inscriptions portées sur les récipients 2 et lisibles en transparence à travers le film 3. Elle est positionnée transversalement dans l'intervalle 11 entre deux récipients cylindriques, de manière que cet intervalle forme un espace de préhension permettant l'engagement de l'index lorsque l'utilisateur veut procéder à l'ouverture du fardeau par déchirage de son enveloppe.This cutout 7 is positioned vertically, in relation to the position of the tear strip 5 which itself may be higher or lower or higher or lower, so as not to hide the inscriptions on containers 2 and legible in transparency through the film 3. It is positioned transversely in the interval 11 between two cylindrical containers, so that this interval forms a gripping space allowing the engagement of the index when the user wants open the load by tearing the envelope.

    Avec cette découpe, le déchirage s'effectue donc en introduisant l'index entre les fentes 7a, 7b et en le ramenant contre la face arrière de l'une des deux languettes de déchirage 9a ou 9b, pour pincer cette languette entre l'index et le pouce, avant de procéder au déchirage en tirant la languette vers l'extérieur en l'éloignant de la découpe.With this cut, the tear is done by introducing the index between the slots 7a, 7b and bringing it back against the rear face of one of the two tear-off tabs 9a or 9b, to pinch this tab between the index finger and the thumb, before tearing by pulling the tab outwards away from the cutting.

    Grâce aux fentes transversales 7b de la découpe en I, la languette comporte d'origine deux amorces de rupture qui facilitent le déchirage du film et permet ensuite, à la bande de déchirage 5, de jouer sa fonction normale de déchirage par ses deux bords longitudinaux.Thanks to the transverse slots 7b of the I-cut, the tongue has original two breaking primers which facilitate the tearing of the film and then allows, the tear strip 5, to play its normal tear function by its two edges longitudinal.

    Dans la forme d'exécution représentée à la figure 2, les récipients 2a sont constitués par des boítes parallèlépipédiques qui, réunies bord à bord par l'enveloppe 3 du fardelage, sont munies, lors de leur conformation, de réserves locales 10, telles que pans coupés ou dièdres inversés. Lorsque ces boítes 2a sont réunies dans le fardeau, les réserves 10 de deux boítes juxtaposées forment ensemble et à l'intérieur du fardeau, un espace de préhension nécessaire à la réalisation de la découpe et au passage de l'index saisissant l'une ou l'autre les languettes de déchirage 9a et 9b.In the embodiment shown in Figure 2, the containers 2a are constituted by parallelepipedic boxes which, joined edge to edge by the envelope 3 bundling, are provided, during their conformation, with local reserves 10, such as cut sides or inverted dihedrons. When these boxes 2a are combined in the burden, the reserves 10 of two juxtaposed boxes form together and inside the burden, a gripping space necessary for the cutting and the passage of the index finger one or the other gripping the tear-off tabs 9a and 9b.

    Il va maintenant être procédé, en référence aux figures 4 et 5, à la description d'une installation mettant en oeuvre un dispositif pour réaliser ces découpes.Reference will now be made, with reference to FIGS. 4 and 5, to the description of an installation using a device for making these cuts.

    Cette installation comporte, en aval d'un poste de réalisation des lots, d'un poste de fardelage et d'un poste de pose d'une poignée 4, non représentés, un poste B de pose d'une bande de déchirage et un poste C de réalisation de la découpe.This installation comprises, downstream of a batching station, a shrink wrapping station and a station for laying a handle 4, not shown, a station B laying a tear strip and a station C for cutting.

    Dans la forme d'exécution représentée, le poste B est identique à celui décrit dans FR-A-2 731 406. Il comporte au dessus de la trajectoire des fardeaux A, déplacés par un convoyeur à bande 12, de manière continue et dans le sens de la flèche 13, un plateau rotatif 14 portant plusieurs chapes radiales 15. Sur chaque chape, sont articulés autour d'un axe horizontal 16 deux leviers, à savoir par rapport au sens de rotation du plateau 14 défini par la flèche 17, un levier amont 18 et un levier aval 19. Ces deux leviers sont munis, à l'une de leurs extrémités, de galets 20 et 22 aptes à coopérer avec des rampes 23 et 24 fixées au dessus du plateau par des consoles 25. Chaque levier amont 18 est prolongé, à l'opposé de son galet 20, par deux tiges parallèles 26. Chacune est munie d'une portée cylindrique extrême 27. Le levier aval 19 comporte, à l'opposé de son galet 22, un prolongement parallèle aux tiges 26 du levier amont 18, ce prolongement comportant un retour latéral 28 pouvant venir en contact de pincement avec la portée cylindrique 27 de la tige 26 qui est en aval.In the embodiment shown, item B is identical to that described in FR-A-2 731 406. It comprises above the trajectory of the burdens A, moved by a conveyor belt 12, continuously and in the direction of the arrow 13, a rotary plate 14 carrying several radial yokes 15. On each yoke, are articulated around a horizontal axis 16 two levers, namely with respect to the direction of rotation of the plate 14 defined by the arrow 17, an upstream lever 18 and a downstream lever 19. These two levers are provided, at one of their ends, rollers 20 and 22 suitable for cooperate with ramps 23 and 24 fixed above the tray by consoles 25. Each upstream lever 18 is extended, opposite its roller 20, by two rods parallel 26. Each has an extreme cylindrical bearing 27. The downstream lever 19 has, opposite its roller 22, an extension parallel to the rods 26 of the lever upstream 18, this extension comprising a lateral return 28 which can come into contact with pinching with the cylindrical surface 27 of the rod 26 which is downstream.

    Ce dispositif comporte également des moyens, non représentés, pour supporter une bobine 30 d'une bande 32, adhésive sur sa face 32a, et les moyens de guidage et d'actionnement d'un couteau 33 à déplacement alternatif disposé au poste de départ, B1 à la figure 4, pour sectionner la bande 32 entre les portées cylindriques 26 du levier 18, alors disposé en position verticale.This device also includes means, not shown, for support a reel 30 of a strip 32, adhesive on its face 32a, and the means of guiding and actuating a reciprocating knife 33 arranged at the start, B1 in FIG. 4, to cut the strip 32 between the cylindrical surfaces 26 of the lever 18, then disposed in a vertical position.

    Dans la forme d'exécution représentée, le plateau 14 est équipé de quatre ensembles de prélèvement disposés à 90° les uns des autres et est relié à des moyens moteurs 34 aptes à le faire pivoter, par fraction de tour de 90°, chaque fois qu'un fardeau A est détecté par des moyens non représentés.In the embodiment shown, the plate 14 is equipped with four sampling sets arranged at 90 ° from each other and is connected to means motors 34 capable of rotating it, by 90 ° fraction of a turn, each time a burden A is detected by means not shown.

    A l'arrêt, comme montré à la figure 4, un tronçon de bande adhésive 32a s'étend, transversalement à la direction de déplacement d'un fardeau, représenté par la flèche 13 à la figure 4, entre d'une part, la portée amont 27 du levier 18 du poste B1 et, d'autre part, la portée aval 27 du levier 18 disposé au poste B2. Il est évident que l'espace entre ces deux portées est suffisant pour laisser passer le fardeau, de manière que celui-ci prélève au passage le tronçon 32a de bande adhésive. En continuant sa trajectoire, le fardeau passe entre deux brosses verticales 35, disposées latéralement à lui et plaquant sur ses flans latéraux les extrémités du tronçon de bande adhésive 32a.When stopped, as shown in FIG. 4, a section of adhesive strip 32a extends transversely to the direction of movement of a load, represented by the arrow 13 in FIG. 4, on the one hand, between the upstream range 27 of the lever 18 of the station B1 and, on the other hand, the downstream range 27 of the lever 18 disposed at station B2. It's obvious that the space between these two spans is sufficient to let the burden pass, so that the latter takes in passing the section 32a of adhesive tape. By continuing its trajectory, the burden passes between two vertical brushes 35, arranged laterally to it and pressing the ends of the section of adhesive strip 32a on its lateral blanks.

    Dès que ce tronçon 32a est prélevé, le plateau 14 pivote de 90°, ce qui a pour effet de dévider la bande 32, dont l'extrémité est pincée au poste B1 entre le retour 28 et la portée 27 de la tige aval 26 du levier 18, du poste B1 au poste B2 et, simultanément, de libérer les leviers 18 et 19 du poste B2 en les amenant en position horizontale par coopération de leurs galets 20, 22 avec la rampe fixe 23. En fin de rotation, le couteau 33 sectionne au poste B1 le tronçon de bande qui a été dévidé de la bobine 30.As soon as this section 32a is removed, the plate 14 pivots 90 °, which has for the effect of unwinding the strip 32, the end of which is pinched at station B1 between the return 28 and the bearing surface 27 of the downstream rod 26 of the lever 18, from station B1 to station B2 and, simultaneously release the levers 18 and 19 of the B2 station by bringing them into position horizontal by cooperation of their rollers 20, 22 with the fixed ramp 23. At the end of rotation, the knife 33 sections at station B1 the strip section which has been unwound from the coil 30.

    Pour plus de détail il est possible de se référer à la description de ce mécanisme qui est donnée dans la demande de brevet français FR-A-2 731 406.For more details it is possible to refer to the description of this mechanism which is given in French patent application FR-A-2 731 406.

    Le fardeau A, qui sort de ce dispositif est donc muni d'une bande de déchirage 5 collée sur la face externe de sa paroi frontale 6. Il est transféré au poste C dont le convoyeur à bande 40 est composé de deux bandes parallèles 40a, 40b séparées par un intervalle longitudinal 40c servant au logement des moyens réalisant les découpes.The burden A, which leaves this device is therefore provided with a strip of tear 5 stuck on the external face of its front wall 6. It is transferred to station C the belt conveyor 40 of which is made up of two separate parallel bands 40a, 40b by a longitudinal interval 40c used for housing the means carrying out the cuts.

    Comme montré aux figures 3, 4 et 5, ces moyens sont constitués par une palette 42 qui est calée en son milieu sur un arbre transversal horizontal 43 disposé entre les deux brins du convoyeur à bande 40.As shown in Figures 3, 4 and 5, these means are constituted by a pallet 42 which is wedged in the middle on a horizontal transverse shaft 43 disposed between the two strands of the belt conveyor 40.

    Comme le montre plus en détails la figure 3, à chacune de ses extrémités, la palette 42 est munie d'un doigt perforateur 44 qui fait saillie de sa face tournée vers l'arrière lorsque le doigt est en position de perforation. Ce doigt a la forme d'un I, c'est à dire est composé d'une lame verticale 44a et de deux lames transversales 44b accolées aux extrémités de cette lame.As shown in more detail in Figure 3, at each of its ends, the pallet 42 is provided with a perforating finger 44 which projects from its face facing the back when the finger is in the perforation position. This finger has the shape of an I, it's to say is composed of a vertical blade 44a and two transverse blades 44b joined at the ends of this blade.

    La position verticale de chaque doigt sur la palette est déterminée pour que, lorsque la palette est en position verticale, le doigt supérieur actif 44 soit au niveau de la bande de déchirage 5 du fardeau. La palette 42 est elle même positionnée transversalement de manière que le doigt 44 soit en face d'un espace de préhension 11 délimité entre deux récipients cylindriques 2 ou délimité par les réserves 10 formées dans des boítes parallèlépipédiques 2a (figure 2).The vertical position of each finger on the pallet is determined for that, when the pallet is in the vertical position, the active upper finger 44 is at the level of the tear strip 5 of the burden. Pallet 42 is itself positioned transversely so that the finger 44 is opposite a gripping space 11 delimited between two cylindrical containers 2 or delimited by the reserves 10 formed in parallelepiped boxes 2a (Figure 2).

    L'arbre 43 est lié en rotation à un moyen moteur et à un moyen de calage maintenant la palette 42 en position de perforation tant qu'un fardeau n'a pas été appliqué contre le doigt de perforation actif. Dans cette réalisation, le moyen moteur et les moyens de calage sont constitués par un motoréducteur frein 45, alimenté à travers un boítier de commande 46 réagissant à un capteur 47 détectant le passage d'un fardeau A.The shaft 43 is linked in rotation to a motor means and to a wedging means now the pallet 42 in the perforation position until a burden has been applied against the active piercing finger. In this embodiment, the driving means and the timing means are constituted by a brake gearmotor 45, fed through a control unit 46 reacting to a sensor 47 detecting the passage of a burden AT.

    A l'arrêt, comme montré à la figure 5, la palette 42 est maintenue en position verticale par le motoréducteur frein 45, de manière que le fardeau A en déplacement sur le convoyeur 40 vienne s'empaler sur le doigt perforateur 44.When stopped, as shown in FIG. 5, the pallet 42 is maintained in vertical position by the brake gear motor 45, so that the load A movement on the conveyor 40 is impaled on the perforating finger 44.

    Lorsque la découpe 7 est réalisée, le frein est libéré et le motoréducteur 45 est alimenté pour faire pivoter la palette 42 et l'amener dans la position horizontale d'effacement, représentée en traits mixtes à la figure 5, laissant libre passage au fardeau A. Dès que le fardeau est passé, la palette 42 est redressée à la verticale, dans sa position de perforation, en attente d'un nouveau fardeau, et le frein est serré pour assurer son calage en rotation.When the cutout 7 is made, the brake is released and the gearmotor 45 is powered to rotate the pallet 42 and bring it into the horizontal position , shown in dashed lines in Figure 5, allowing free passage of the burden A. As soon as the burden has passed, the pallet 42 is straightened vertically, in its perforation position, waiting for a new load, and the brake is applied to ensure its setting in rotation.

    Ce dispositif simple s'intègre très facilement à une installation existante et permet d'obtenir des fardeaux dont le déchirage de l'enveloppe ne pose aucun problème.This simple device is very easily integrated into an existing installation and makes it possible to obtain burdens whose tearing of the envelope poses no problem.

    L'installation représentée à la figure 6 se différencie de la précédente par le fait que le poste B de dépose de la bande de déchirage 5a est disposé immédiatement après le poste de formation du lot de plusieurs récipients 2 et en amont d'un poste de fardelage F et du tunnel G de thermorétraction et, éventuellement, en amont du poste, non représenté, assurant le dépôt de la poignée 4.The installation shown in Figure 6 differs from the previous one by the causes the station B for removing the tear strip 5a to be arranged immediately after the training station for the batch of several containers 2 and upstream of a bundling F and heat shrink tunnel G and, possibly, upstream of the station, not shown, ensuring the deposit of the handle 4.

    Dans ces conditions, le poste B dépose un tronçon de bande 5a, qui est adhésive sur ses deux faces de manière que la face qui est postérieure, par rapport au sens d'avancement du convoyeur, assure le collage temporaire de la bande 5a sur la rangée frontale des récipients 2, alors que l'adhésif disposé sur la face antérieure de la bande 5a assure le collage de cette bande sur la face interne de la paroi frontale 6 de l'enveloppe 3a, thermorétractée sur le lot de récipient. Dans ces conditions, le poste C de réalisation de la découpe 7 est disposé après le poste G de thermorétraction de l'enveloppe 3a et, éventuellement, après le poste de mise en place de la poignée 4, non représentée. Exceptée cette différence, le poste C est identique à celui décrit en référence aux figures 3 à 5.Under these conditions, station B deposits a section of strip 5a, which is adhesive on both sides so that the side which is posterior to the direction of travel of the conveyor, ensures temporary bonding of the strip 5a on the front row of containers 2, while the adhesive placed on the anterior face of the strip 5a ensures the bonding of this strip on the internal face of the front wall 6 of the envelope 3a, heat-shrunk on the container batch. Under these conditions, item C for carrying out the cutout 7 is arranged after the heat shrinking station G the envelope 3a and, possibly, after the station for fitting the handle 4, not represented. Except for this difference, item C is identical to that described in reference to Figures 3 to 5.

    Cette forme d'exécution est intéressante dans la mesure où elle utilise au mieux l'effet de déchirement procuré par les bords de la bande de déchirage 5a, puisque celle-ci est à l'intérieur de l'enveloppe et est tirée vers l'extérieur pour passer à travers cette enveloppe.This form of execution is interesting insofar as it uses better the tearing effect provided by the edges of the tear strip 5a, since this is inside the envelope and is pulled out to go through this envelope.

    La forme d'exécution représentée aux figures 7 et 8 se différencie de celle des figures 4 et 5 par la disposition de la palette 42 portant deux doigts perforateurs 44. En effet, son arbre rotatif 43a est vertical et est disposé latéralement à un convoyeur à bande 48. Cet arbre est lié en rotation à un motoréducteur frein 45, alimenté à travers un boítier de commande 46 réagissant à un capteur 47.The embodiment shown in Figures 7 and 8 differs from that in FIGS. 4 and 5 by the arrangement of the pallet 42 carrying two perforating fingers 44. Indeed, its rotary shaft 43a is vertical and is disposed laterally to a conveyor band 48. This shaft is linked in rotation to a brake gearmotor 45, supplied through a control unit 46 reacting to a sensor 47.

    Comme montré à la figure 7, lorsque la palette est en position de perforation, elle est transversale, de manière à amener l'un de ses doigts 44 dans la trajectoire d'un fardeau A et plus précisément dans l'intervalle 11 entre deux récipients, tandis que, comme montré en traits mixtes à la même figure lorsqu'elle est en position d'effacement, elle est longitudinale, c'est à dire parallèle à la direction de déplacement des fardeaux.As shown in Figure 7, when the pallet is in the position perforation, it is transverse, so as to bring one of its fingers 44 into the trajectory of a burden A and more precisely in the interval 11 between two containers, while, as shown in phantom in the same figure when in position of erasure, it is longitudinal, i.e. parallel to the direction of movement burdens.

    Le dispositif qui vient d'être décrit dans le cas de son application à une installation réalisant des fardeaux avec bande de déchirage 5 ou 5a, s'applique également aux installations réalisant des fardeaux sans bande de déchirage mais utilisant des enveloppes en matière synthétique déchirable.The device which has just been described in the case of its application to a installation carrying burdens with tear strip 5 or 5a, also applies to installations carrying out burdens without a tear strip but using envelopes of tearable synthetic material.

    Claims (4)

    Dispositif pour la réalisation d'une découpe dans l'enveloppe d'un fardeau en défilement, ce fardeau étant composé de plusieurs éléments (2) réunis par une enveloppe (3), associée ou non à une bande de déchirage, caractérisé en ce qu'il comprend, d'une part, un convoyeur assurant le déplacement des fardeaux (A), de manière continue et avec un intervalle constant, et, d'autre part, une palette (42) portant à chaque extrémité un doigt perforateur (44), cette palette étant calée en son milieu sur un arbre rotatif (43, 43a) relié à un moyen moteur (45) apte à la faire pivoter d'une fraction de tour entre deux positions, à savoir, une position de perforation, dans laquelle l'un de ses doigts (44) est dans la trajectoire d'un fardeau (A) et fait saillie en direction de la face frontale de ce fardeau, et une position d'effacement, dans laquelle ses doigts (44) sont hors de la trajectoire du fardeau.Device for making a cut in the envelope of a traveling burden, this burden being composed of several elements (2) joined by an envelope (3), associated or not with a tear strip, characterized in that 'It comprises, on the one hand, a conveyor ensuring the movement of the burdens (A), continuously and with a constant interval, and, on the other hand, a pallet (42) carrying at each end a perforating finger (44 ), this pallet being wedged in the middle on a rotary shaft (43, 43a) connected to a motor means (45) able to rotate it by a fraction of a turn between two positions, namely, a perforation position, in which one of its fingers (44) is in the path of a burden (A) and projects towards the front face of this burden, and an erasing position, in which its fingers (44) are out of the path of the burden. Dispositif selon la revendication 1, caractérisé en ce que la palette (42) est disposée dans l'intervalle entre deux bandes (40a, 40b) du convoyeur à bande (40) et est calée sur un arbre rotatif horizontal (43) qui, transversal à la direction de déplacement des fardeaux (A) est disposé au-dessous de la trajectoire de ceux-ci, est lié à un moyen moteur (45) apte à faire pivoter la palette (42), entre ses positions de perforation et d'effacement, ou inversement, et est également lié à des moyens de calage (45) maintenant la palette (42) en position de perforation, tant que le fardeau (A) n'a pas été appliqué contre le doigt perforateur actif (44) de la palette.Device according to claim 1, characterized in that the pallet (42) is arranged in the interval between two belts (40a, 40b) of the belt conveyor (40) and is wedged on a horizontal rotary shaft (43) which, transverse to the direction of displacement of the burdens (A) is arranged below the trajectory of these, is linked to a motor means (45) capable of pivoting the pallet (42), between its positions of perforation and erasure, or vice versa, and is also linked to wedging means (45) holding the pallet (42) in the perforation position, as long as the burden (A) has not been applied against the active perforating finger (44) of the pallet. Dispositif selon la revendication 1, caractérisé en ce que la palette (42) est disposée sur le côté du convoyeur à bande (48) déplaçant les fardeaux (A), et est calée sur un arbre rotatif vertical (43a) lié, d'une part, à un moyen moteur (45) apte à faire pivoter la palette d'une fraction de tour entre ses positions, respectivement, de perforation et d'effacement, ou inversement, et, d'autre part, à des moyens de calage (45) maintenant la palette (42) en position de perforation, tant que le fardeau (A) n'a pas été appliqué contre le doigt perforateur actif (44) de la palette.Device according to claim 1, characterized in that the pallet (42) is arranged on the side of the conveyor belt (48) moving the bundles (A), and is wedged on a vertical rotary shaft (43a) linked, on the one hand, to a motor means (45) capable of rotate the pallet a fraction of a turn between its positions, respectively, by perforation and erasure, or vice versa, and, on the other hand, to wedging means (45) holding the pallet (42) in the perforation position, as long as the burden (A) has not been applied against the active perforating finger (44) of the pallet. Dispositif selon l'une quelconque des revendications 2 et 3, caractérisé en ce que les moyens moteurs et les moyens de calage sont constitués par un motoréducteur frein (45) dont le circuit d'alimentation comprend un boítier de commande (46) et un capteur (47) détectant le passage d'un fardeau en cours de perforation et réagissant sur ce boítier de commande pour déclencher, d'abord, la rotation de la palette (42), de sa position de perforation à sa position d'effacement et, après passage du fardeau, de sa position d'effacement à sa position de perforation.Device according to any one of claims 2 and 3, characterized in that the drive means and the timing means are constituted by a brake gearmotor (45), the supply circuit of which includes a control (46) and a sensor (47) detecting the passage of a burden during perforation and reacting on this control unit to trigger, first, the rotation of the pallet (42), from its perforation position to its erasure position and, after the burden has passed, from its erasing position to its perforation position.
    EP97203258A 1997-10-20 1997-10-20 Apparatus for making a cut in the wrapper of a moving load Withdrawn EP0913330A1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    EP97203258A EP0913330A1 (en) 1997-10-20 1997-10-20 Apparatus for making a cut in the wrapper of a moving load

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP97203258A EP0913330A1 (en) 1997-10-20 1997-10-20 Apparatus for making a cut in the wrapper of a moving load

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    EP0913330A1 true EP0913330A1 (en) 1999-05-06

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    Cited By (1)

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    FR2818242A1 (en) 2000-12-14 2002-06-21 Cefma Machine for wrapping group of articles with film and simultaneously applying tear strip comprises rollers which feed it on to film, cutter which cuts it into sections and press which applies each section on to film at desired position

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    US2771385A (en) 1954-08-26 1956-11-20 Mid States Gummed Paper Co Pressure-sensitive and remoistening draw tape
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    GB1024059A (en) * 1964-03-13 1966-03-30 Ibm Improvements in and relating to objects having protective enclosures
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    US3403779A (en) 1966-10-14 1968-10-01 Reynolds Metals Co Opening device for package means
    FR2728242A1 (en) * 1994-12-16 1996-06-21 Beauzee Bernard Method of wrapping of group of bottles with film
    FR2731406A1 (en) 1995-03-06 1996-09-13 Cefma Machine for placing adhesive tape on continuously passing articles

    Patent Citations (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2656273A (en) 1952-02-12 1953-10-20 Eastman Kodak Co Photographic developers containing diamino-propanol tetracetic acid
    US2771385A (en) 1954-08-26 1956-11-20 Mid States Gummed Paper Co Pressure-sensitive and remoistening draw tape
    US2837938A (en) 1957-03-07 1958-06-10 William L Spitzer Watchmaker's drill press for use with a lathe
    US3273302A (en) * 1963-12-16 1966-09-20 Container Corp Method of forming shrink film package
    GB1024059A (en) * 1964-03-13 1966-03-30 Ibm Improvements in and relating to objects having protective enclosures
    US3403779A (en) 1966-10-14 1968-10-01 Reynolds Metals Co Opening device for package means
    FR2728242A1 (en) * 1994-12-16 1996-06-21 Beauzee Bernard Method of wrapping of group of bottles with film
    FR2731406A1 (en) 1995-03-06 1996-09-13 Cefma Machine for placing adhesive tape on continuously passing articles

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2818242A1 (en) 2000-12-14 2002-06-21 Cefma Machine for wrapping group of articles with film and simultaneously applying tear strip comprises rollers which feed it on to film, cutter which cuts it into sections and press which applies each section on to film at desired position

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