Application method and products that use a foamed hot melt adhesive
US4894277A · kind A · utility
117Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1986 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Nov 3, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/651
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method that includes the step of spraying a foamed hot melt adhesive from the discharge nozzle of a spray gun under such conditions that elongated strands of foamed hot melt adhesive are formed in an open weave film of spider web configuration which is deposited on a first substrate. A second substrate can then be bonded to the first to form a product. Alternatively, and before the second substrate is bonded to the first, a powder, e.g., a hygroscopic powder, can be deposited within the open areas of the film's spider web configuration to form a laminate product with a special enhanced characteristic, e.g., moisture absorbency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.