Method for producing double-sided pressure-sensitive adhesive sheet
US8685492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2007 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | May 11, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method is provided for producing a double-sided pressure-sensitive adhesive (PSA) sheet of a nonwoven fabric substrate, whereby the inherent performance of the PSA is more fully exploited using an aqueous dispersion-type PSA composition. This method comprises preparing an aqueous dispersion-type PSA composition and a nonwoven fabric substrate serving as a support. The method also comprises forming PSA layers which impregnate the substrate and which are obtained by drying the composition. These PSA layers impregnate the substrate so that the area of gaps observed in a vertical cross-section perpendicular to the machine direction of the substrate is about 500 μm2/400 μm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.