Method and apparatus for manufacturing packaging pads
US4720321A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1985 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Jun 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1737
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Packaging pads comprise top and bottom sheets laminated together along peripheral surface portions with a pocket of comminuted filler material centrally disposed between the sheets. Apparatus for manufacturing the pads continuously feeds an endless bottom sheet along a predetermined travel path, and liquid adhesive is applied to the upper surface of the sheet as it so travels. A stream of filler material is divided into spaced apart individual pocket amounts and these filler amounts are joined to the adhesive coated surface of the bottom sheet. A top sheet coated with liquid adhesive on the underside thereof is laminated onto the bottom sheet and the pocket amounts of filler material. The thus formed continuous laminate is transversely cut midway between adjacent pockets of filler material to thereby form individual packaging pads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.