Seams and closures for plastic fabrics and clothing
US5494720A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Aug 29, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/19
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A heat sealable, adhesive-free seam and closure fabrics and clothing comprising the combination of a fabric scrim and a heat sealable water and vapor resistant coextruded laminations which provides a barrier against liquid substances and vapors. The coextrusion laminations are in abutment or overlap and comprise a film layer with an outer and inner layer of low density polyethylene and an intermediate layer of a copolymer of ethylene and vinyl alcohol. The laminations are fusion bonded to a portion of the scrim in a manner whereby the polyethylene flows from said lamination, encapsulates the ends of the intermediate layer of the laminate and forms weld points with the said scrim to prevent penetration by liquid substances and vapors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.