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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0530432 (2012-06-22) |
등록번호 | US-9765459 (2017-09-19) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 0 인용 특허 : 390 |
This disclosure relates to an article that includes a nonwoven substrate and a film supported by the nonwoven substrate. The film can include a first polymer and a polymer that is immiscible with the first polymer. The first polymer can include a polyolefin and the second polymer can include a polyc
This disclosure relates to an article that includes a nonwoven substrate and a film supported by the nonwoven substrate. The film can include a first polymer and a polymer that is immiscible with the first polymer. The first polymer can include a polyolefin and the second polymer can include a polycycloolefin, a polymethylpentene, or a copolymer thereof.
1. An article, comprising: a nonwoven substrate; anda microporous breathable film supported by the nonwoven substrate, the microporous breathable film comprising a first polymer comprising at most about 99% of a total weight of the microporous breathable film and an amount of a second polymer compri
1. An article, comprising: a nonwoven substrate; anda microporous breathable film supported by the nonwoven substrate, the microporous breathable film comprising a first polymer comprising at most about 99% of a total weight of the microporous breathable film and an amount of a second polymer comprising at least about 1% of the total weight of the microporous breathable film, the second polymer being immiscible with the first polymer,wherein the second polymer has a polymer backbone similar to that of the first polymer such that at least about 5% by weight of the amount of the second polymer is blended with the first polymer, andwherein the microporous breathable film is devoid of a pore-forming filler. 2. The article of claim 1, wherein the first polymer comprises a polyolefin and the second polymer comprises a polycycloolefin, a polymethylpentene, or a copolymer thereof. 3. The article of claim 2, wherein the second polymer comprises a poly(cycloolefin-co-olefin). 4. The article of claim 2, wherein the second polymer comprises a poly(norbornene-co-ethylene) or a copolymer formed from ethylene and norbornene substituted with a substituent. 5. The article of claim 2, wherein the first polymer comprises a polyethylene or a polypropylene. 6. The article of claim 5, wherein the first polymer comprises a polyethylene selected from the group consisting of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, and copolymers thereof. 7. The article of claim 5, wherein the film further comprises an elastomer. 8. The article of claim 1, wherein the microporous breathable film is substantially uniform in the absence of a compatibilizer. 9. The article of claim 1, wherein the nonwoven substrate comprises randomly disposed polymeric fibers, at least a portion of the fibers being bonded to one another. 10. The article of claim 1, wherein the article is embossed. 11. The article of claim 2, wherein the article has a moisture vapor transmission rate of at least about 35 g/m2/day when measured at 23° C. and 50 RH %. 12. A construction material, comprising the article of claim 1. 13. The construction material of claim 12, wherein the construction material is a housewrap or a roofwrap. 14. The article of claim 2, wherein: the first polymer comprises a polyethylene or a polypropylene; and the second polymer comprises a poly(cycloolefin-co-olefin). 15. The article of claim 14, wherein the film further comprises an elastomer. 16. The article of claim 15, wherein the microporous breathable film is supported by a nonwoven substrate comprising randomly disposed polymeric fibers, at least some of the fibers being bonded to one another. 17. The article of claim 16, wherein: the article has a moisture vapor transmission rate of at least about 35 g/m2/day when measured at 23° C. and 50 RH %;the article has a unit weight of 1.25 osy;the article has a tensile strength of at least about 35 pounds in at least one of the machine direction or the cross-machine direction as measured according to ASTM D5034; andthe article has a hydrostatic head of at least about 55 cm. 18. The article of claim 1, wherein at least about 30% by weight of the amount of the second polymer is blended with the first polymer. 19. The article of claim 1, wherein 5-30% by weight of the amount of the second polymer is blended with the first polymer.
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