03-01-2019 дата публикации
Номер: US20190001611A1
Принадлежит:
Tip bonded formed laminates, and methods for making tip bonded formed laminates, are made from multiple layers of formed substrates made from films which are bonded together at the tips of their formed protrusions. Tip bonded laminates can be designed with greater resistance to bending, improved resilience to compression, and can be patterned for directionally oriented responses to tensile loads. Also, tip bonded formed laminates made from multiple layers of formed substrates can use their layered structure to provide better aesthetics as well as better physical properties such as improved puncture resistance. Tip bonded formed laminates can be configured with thicker portions and designed patterns, which are appealing to consumers. A tip bonded formed laminate can be made from two or more formed substrates and can be used instead of a single, thick, unformed, substrate, so the laminate can use about the same amount of material, while still providing surprising functional benefits. Tip bonded formed laminates can provide these benefits without relying on more expensive polymers and/or high concentrations of additives and offer significant improvements at a reasonable cost, when compared with unformed, single layer substrates. 1. A laminate comprising: a first inward facing trough, which has a first trough smallest thickness;', 'a first outward facing crest, which has a first crest smallest thickness; and', 'a first intermediate portion disposed between the first trough and the first crest, wherein', 'the first intermediate portion has a first intermediate smallest thickness, which is less than the first crest smallest thickness;, 'a first film having a first plurality of integrally connected, incrementally stretched, elongated corrugations disposed side-by-side, each having a second inward facing trough, which has a second trough smallest thickness;', 'a second outward facing crest, which has a second crest smallest thickness; and', 'a second intermediate portion ...
Подробнее