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US 12,017,443 B2Granted
Interlayer and laminate with controlled debonding zone treatments with enhanced performance
AssigneeKuraray Europe GmbH
InventorsCharles Anthony Smith, Stephen John Bennison
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Abstract
The present invention relates to a laminate structure comprising an adhesive polymeric interlayer (API) that comprises discrete zones. Such discrete zones are located at the interface of the API and the glass substrate. Generally, the discrete zones comprise two sets of discrete zones, debonding and adhesive. These zones allow for a unique combination of modified API-glass debonding, laminate toughness, and laminate durability. Various spatial patterns and densities of debonding are described, as well as the resulting material properties.
Claims26
An adhesive polymeric interlayer (API), comprising:
- a first polymeric material,
- a first surface and a second surface,
- a first discrete zone on the first surface with a maximum mean peel adhesion, and
- a second discrete zone on the first surface with a minimum mean peel adhesion greater than about 0.01 kJ/m2,
- wherein the maximum mean peel adhesion is at least about 2 times greater than the minimum mean peel adhesion,
- wherein both the first discrete zone and the second discrete zone have mean peel adhesion of from about 0.5 to about 7.0 KJ/m2.
3 more elements
Dependencies are inferred from the claim text.