A process for making a cushioning component from a pair of sheets of flexible thermoplastic resin in which the sheets are placed against a pair of molds having hemispherical protrusions for forming opposing hemispherical indentations in the sheets. The indentations in the first sheet abut those of the...http://www.google.de/patents/US5976451?utm_source=gb-gplus-sharePatent US5976451 - Construction method for cushioning component
