IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0278241
(2002-10-23)
|
|
발명자
/ 주소 |
- Kong, Dan-Cheng
- Cleckner, Michael Dale
|
| 출원인 / 주소 |
- ExxonMobil Oil Corporation
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
8 인용 특허 :
107 |
초록
▼
A thermoplastic film containing a core layer and an enhanced printing skin layer. The core layer comprises an orientation enhancing polymer, a polypropylene homopolymer, and a beta-crystal nucleators of polypropylene. The thermoplastic film may be used to enhance printing and where breathable films
A thermoplastic film containing a core layer and an enhanced printing skin layer. The core layer comprises an orientation enhancing polymer, a polypropylene homopolymer, and a beta-crystal nucleators of polypropylene. The thermoplastic film may be used to enhance printing and where breathable films with good water vapor transmission are desired.
대표청구항
▼
1. A thermoplastic film, comprising a core layer and at least one printable skin layer, wherein said core layer comprises an orientation-enhancing polymer, a polypropylene homopolymer, at least one beta crystal nucleator of polypropylene and optionally a water absorption additive. 2. The thermoplast
1. A thermoplastic film, comprising a core layer and at least one printable skin layer, wherein said core layer comprises an orientation-enhancing polymer, a polypropylene homopolymer, at least one beta crystal nucleator of polypropylene and optionally a water absorption additive. 2. The thermoplastic film of claim 1, wherein said orientation-enhancing polymer comprises an (isotactic propylene)-ethylene heterophasic copolymer and at least one polymer selected from the group consisting of:an impact polypropylene polymer;an impact polypropylene copolymer;an α-olefin-(isotactic propylene) rubber;a metallocene-catalyzed isotactic polypropylene;an isotactic polypropylene grafted with elastomer;a maleated-isotactic polypropylene;a blend of an isotactic polypropylene and a syndiotactic polypropylene;a blend of an isotactic polypropylene and an atactic polypropylene;a blend of an isotactic polypropylene and an acrylic elastomer;a blend of an isotactic polypropylene and an alkenic elastomer;a blend of an isotactic polypropylene, a polyethylene, and an ethylene-propylene rubber;a blend of an isotactic polypropylene and a polyisobutylene;a blend of an isotactic polypropylene and a styrenic elastomer;a blend of an isotactic polypropylene and a metallocene-catalyzed isotactic polypropylene copolymer; anda blend of an isotactic polypropylene and an isotactic propylene copolymer. 3. The thermoplastic film of claim 1, wherein said printable skin layer comprises an impact polypropylene copolymer and a beta crystal nucleator of polypropylene. 4. The thermoplastic film of claim 1, wherein said printable skin layer comprises a polypropylene homopolymer, an orientation-enhancing polymer, a beta crystal nucleator of polypropylene, and a water absorption additive. 5. The thermoplastic film of claim 4, wherein said water absorption additive of the printable skin layer is at least one selected from the group consisting of CaCO 3 , BaCO 3 , clay, talc, silica, and a hygroscopic polymer. 6. The thermoplastic film of claim 5, wherein said water absorption additive is a hygroscopic polymer selected from the group consisting of polyethylene oxide, nonylphenol polyethylene glycol ether, polyvinyl alcohol, atactic salts of polyacrylic acid, syndiotactic salts of polyacrylic acid, and methacrylic acid copolymer and its salts. 7. The thermoplastic film of claim 1, further comprising an intermediate layer, located between the core layer and said printable skin layer. 8. The thermoplastic film of claim 7, wherein said intermediate layer comprises a polypropylene homopolymer, an orientation-enhancing polymer, a beta crystal nucleator of polypropylene and a water absorption additive. 9. The thermoplastic film of claim 8, wherein the total weight percentage of the water absorption additives of said the intermediate layer is greater than the total weight percentage of the water absorption additives of the printable skin layer. 10. The thermoplastic film of claim 7, wherein said intermediate layer has thickness greater than the thickness of said printable skin layer. 11. The thermoplastic film of claim 1, wherein said polypropylene homopolymer is an isotactic polypropylene. 12. The thermoplastic film of claim 11, wherein said isotactic polypropylene has m-pentad greater than 85% by NMR spectroscopy measurement. 13. The thermoplastic film of claim 1, wherein said printable skin layer surface is treated with corona, flame, or plasma. 14. The thermoplastic film of claim 13, further comprising an ink-jet print on said printable skin layer. 15. The thermoplastic film of claim 1, wherein said printable skin layer is an ink-jet printable surface, a water-based ink printable surface, a solvent-based ink printable surface, or a UV-curable ink printable surface. 16. The thermoplastic film of claim 1, further comprising an outer skin layer comprising a water based pressure sensitive adhesive located on the side of said film opposite to said printable skin layer. 17. Th e thermoplastic film of claim 1, further comprising a cold glue layer located on the side of said film opposite to said printable skin layer. 18. The thermoplastic film of claim 1, wherein said beta crystal nucleator of polypropylene comprises a mixture of an organic dibasic acid and an oxide, a hydroxide, or an acid salt of a Group II metal. 19. The thermoplastic film of claim 1, further comprising an outer skin layer which has a composition which is the same as the core layer. 20. The thermoplastic film of claim 11, wherein said isotactic polypropylene comprises a mixture of at least two polypropylene polymers having different m-pentads by NMR spectroscopy measurement. 21. The thermoplastic film of claim 1, wherein said core layers contains at least one water absorption additive selected from the group consisting of CaCO 3 , BaCO 3 , clay, talc, silica, and a hygroscopic polymer. 22. A thermoplastic film, comprising a core layer and at least one printable skin layer, wherein said core layer comprises an orientation-enhancing polymer, a polypropylene homopolymer, at least one beta crystal nucleator of polypropylene and optionally a water absorption additive, wherein said printable skin layer comprises a polypropylene homopolymer, an orientation-enhancing polymer, a beta crystal nucleator of polypropylene, and a water absorption additive, and wherein said water absorption additive of said printable skin layer is a hygroscopic polymer selected from the group consisting of polyethylene oxide, nonylphenol polyethylene glycol ether, polyvinyl alcohol, atactic salts of polyacrylic acid, syndiotactic salts of polyacrylic acid, and methacrylic acid copolymer and its salts. 23. A thermoplastic film, comprising a core layer and at least one printable skin layer, wherein said core layer comprises an orientation-enhancing polymer, a polypropylene homopolymer, at least one beta crystal nucleator of polypropylene and optionally a water absorption additive, and wherein said film further comprises an outer skin layer comprising a water based pressure sensitive adhesive located on the side of said film opposite to said printable skin layer. 24. A label, comprising the thermoplastic film of claim 23. 25. A thermoplastic film, comprising a core layer and at least one printable skin layer, wherein said core layer comprises an orientation-enhancing polymer, a polypropylene homopolymer, at least one beta crystal nucleator of polypropylene and optionally a water absorption additive, and wherein said film further comprises a cold glue layer located on the side of said film opposite to said printable skin layer. 26. A label, comprising the thermoplastic film of claim 25.
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