Methods and apparatus to form venting pathways in pressure sensitive adhesives for laminate stacks
US10507635B2 · kind B2 · utility
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3References
21Claims
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Key dates
| Filing date | Jan 3, 2017 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Jan 22, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2400/263
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods and apparatus to form venting pathways in pressure sensitive adhesives for laminate stacks are disclosed. An example method includes forming a laminate stack including a gas permeable nonwoven layer and a pressure sensitive adhesive layer, a surface of the pressure sensitive adhesive layer facing a surface of the gas permeable nonwoven layer, and processing the laminate stack such that a plurality of venting pathways are formed in the pressure sensitive adhesive layer to enable trapped gas to pass through the pressure sensitive adhesive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.