Curable extruded adhesive laminate system for manufacturing collapsible structures
US7259115B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2003 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Jun 19, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2738
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is a heat curable extruded adhesive laminate system for producing collapsible tanks. The laminate is a composite of a fabric; an extruded linear hydroxyl adhesive having an uretdione that serves as a latent thermally activated curing component, and a high cyrstallinity thermoplastic polyurethane. In the system, panels cut from the adhesive laminate are assembled and seamed in a compression press operating at about 260° F. to about 350° F. The bonding process takes about 20-45 minutes, which causes the latent thermally activated curing component to cure the adhesive. Following compression heating in the press, the resulting seams have a strength that exceeds the minimum acceptable performance of 25 lbs/in, after being immersed in water and/or fuel at 160° F. for six weeks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.