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1. 发明授权

US08017231B1 Heat shrinkable films containing single site catalyzed copolymers having long chain branching 失效
标题翻译：含有具有长链支化的单位点催化共聚物的热收缩膜
公开(公告)号：US08017231B1
公开(公告)日：2011-09-13
申请号：US09583654
申请日：2000-05-30
申请人： Kelly R. Ahlgren , Robert Babrowicz , Solomon Bekele , Blaine C. Childress , Marvin R. Havens , Ronald D. Moffitt , Gautam P. Shah , George D. Wofford
发明人： Kelly R. Ahlgren , Robert Babrowicz , Solomon Bekele , Blaine C. Childress , Marvin R. Havens , Ronald D. Moffitt , Gautam P. Shah , George D. Wofford
IPC分类号： B32B27/32
CPC分类号： B32B27/32 , B32B27/08 , B32B27/304 , B32B27/306 , B32B27/308 , B32B27/34 , B32B2307/31 , B32B2307/72 , B32B2307/736 , C08J5/18 , C08J2323/08 , C08L23/0815 , C08L2205/02 , C08L2205/03 , C08L2314/06 , Y10S526/943 , Y10T428/1328 , Y10T428/1334 , Y10T428/1341 , Y10T428/26 , Y10T428/266 , Y10T428/2826 , Y10T428/31855 , Y10T428/31909 , Y10T428/31913 , Y10T428/31928 , Y10T428/31938 , C08L2666/02 , C08L2666/06
摘要： The present invention is directed to a heat-shrinkable, thermoplastic film or bag which contains at least one homogeneous ethylene alpha-olefin copolymer with at least some limited long chain branching. Oriented films made in accordance with the present invention exhibit improved processability as well as improved physical properties such as excellent optics and impact resistance. A homogeneous ethylene alpha-olefin with long chain branching may be present in a monolayer film either alone or in a blend or may be included in one or more layers of a multilayer film in accordance with the present invention.
摘要翻译：本发明涉及一种热收缩的热塑性薄膜或袋，其含有至少一种具有至少一些有限长链支化的均相乙烯α-烯烃共聚物。根据本发明制备的定向膜显示出改进的加工性能以及改善的物理性能，例如优异的光学和耐冲击性。具有长链支化的均相乙烯α-烯烃可以单独或混合物存在于单层膜中，或者可以包含在根据本发明的多层膜的一层或多层中。

2. 发明授权

US07051493B2 High modulus, temperature-resistant film for form fill and seal packaging 失效
标题翻译：高模量，耐高温的膜用于成型填充和密封包装
公开(公告)号：US07051493B2
公开(公告)日：2006-05-30
申请号：US10225815
申请日：2002-08-21
申请人： Hubert J. Cook , Janet W. Rivett , Gautam P. Shah , Richard M. Dayrit , Kelly R. Ahlgren
发明人： Hubert J. Cook , Janet W. Rivett , Gautam P. Shah , Richard M. Dayrit , Kelly R. Ahlgren
IPC分类号： B65B9/00 , B65B63/00 , B65B55/00 , B32B7/02 , B32B27/08
CPC分类号： B32B27/08 , B32B27/32 , B32B27/34 , B32B27/36 , B32B2325/00 , B32B2367/00 , B32B2377/00 , B32B2439/70 , Y10T428/1324 , Y10T428/1393 , Y10T428/24942 , Y10T428/31743 , Y10T428/31797 , Y10T428/31909 , Y10T428/31924
摘要： A multilayer film, which is particularly suited to packaging of cheese on a Hayssen® RT packaging machine, has a first layer comprising cyclic olefin copolymer having a glass transition temperature of at least 125° C., and a second layer comprising at least one member selected from the group consisting of cyclic olefin copolymer having a glass transition temperature of at least 125° C., polyamide, polyester, and polystyrene. The first and second layers are on opposite sides of a tensile axis of symmetry of the film. The film exhibits from 0 to 45 degrees of transverse edge curl, a yield point of at least 1200 psi at a temperature of 85° C., and an elongation at break of from 0 to 300 percent at 85° C. In addition, a packaging process comprises supplying the film and placing a plurality of product units on the flat film at desired intervals, forwarding the flat film having product units thereon, while forming a tubing from the flat film so that product is inside the tubing, followed by sealing the film along its length and transversely (upstream and downstream of the product), so that the product is a discrete packaged product is formed.
摘要翻译：特别适合于在Hayssen RT包装机上包装奶酪的多层膜具有包含玻璃化转变温度至少为125℃的环烯烃共聚物的第一层，和至少包含至少125℃的第二层一种选自玻璃化转变温度至少为125℃的环烯烃共聚物，聚酰胺，聚酯和聚苯乙烯。第一层和第二层位于膜的拉伸对称轴线的相对侧上。该膜在85℃的温度下呈现0至45度的横向边缘卷曲，屈服点至少为1200psi，在85℃下的断裂伸长率为0至300％。另外，包装方法包括供应薄膜并以期望的间隔将多个产品单元放置在平膜上，在其上从平坦薄膜形成管子的同时将其上具有产品单元的扁平薄膜送出，使得产品在管内，然后密封膜的长度和横向（产品的上游和下游），从而形成产品是分立的包装产品。

3. 发明授权

US06524720B1 Moisture barrier film 失效
公开(公告)号：US06524720B1
公开(公告)日：2003-02-25
申请号：US08787895
申请日：1997-01-23
申请人： Gautam P. Shah
发明人： Gautam P. Shah
IPC分类号： B32B2732
CPC分类号： B32B27/32 , B29K2995/0022 , B32B27/08 , Y10S428/91 , Y10T428/31913 , Y10T428/31928
摘要： A multiple layer film useful in moisture barrier packaging applications has at least one layer comprising a blend of propylene polymer or copolymer, and a hydrocarbon resin; and two additional layers comprising a propylene polymer or copolymer, ethylene alpha olefin copolymer, ionomer, polybutene, or blends thereof. A core layer of ethylene vinyl alcohol copolymer or other oxygen barrier material, or high density polyethylene, can be included in some embodiments. A preferred embodiment of the multi-layer film exhibits excellent moisture barrier and optical properties, and shrink properties as well if the film has been oriented. High oxygen barrier is also a feature in embodiments including EVOH or other oxygen barrier materials.

4. 发明授权

US06420046B1 Film with impact and puncture resistance 失效
标题翻译：具有抗冲击和抗穿刺的薄膜
公开(公告)号：US06420046B1
公开(公告)日：2002-07-16
申请号：US09240729
申请日：1999-01-29
申请人： Gautam P. Shah , William W. Furrer
发明人： Gautam P. Shah , William W. Furrer
IPC分类号： B32B2734
CPC分类号： B32B27/08 , B29C47/0021 , B29C47/061 , B32B27/32 , B32B27/34 , B32B2377/00 , B32B2439/46 , Y10T428/1334 , Y10T428/1352 , Y10T428/1383 , Y10T428/24843 , Y10T428/31725 , Y10T428/31739
摘要： A film includes a core layer including a polymer such as nylon 6, nylon 66, nylon 6,66, and/or polyamide elastomer; first and second intermediate layers including polymeric adhesive; a first outer layer including ethylene/alpha olefin copolymer having a density of less than 0.940 grams/cubic centimeter; and a second outer layer including heat sealable polymer such as (1) ethylene/alpha olefin copolymer having a density less than 0.921 grams/cubic centimeter, (2) ethylene/vinyl acetate copolymer, (3) ethylene/alkyl (meth)acrylate copolymer, (4) ethylene/(meth)acrylic acid copolymer, and/or (5) ionomer. The film has good resistance to tear, and good resistance to impact, making it useful for packaging coins and other objects. A bag made from the film, and an article such as a sealed bag filled with coins or other objects, are also disclosed.
摘要翻译：膜包括包含聚合物如尼龙6，尼龙66，尼龙6,66和/或聚酰胺弹性体的芯层; 第一和第二中间层包括聚合物粘合剂; 包括密度小于0.940克/立方厘米的乙烯/α-烯烃共聚物的第一外层; 和（2）乙烯/乙酸乙烯酯共聚物，（3）乙烯/（甲基）丙烯酸烷基酯共聚物，（3）乙烯/（甲基）丙烯酸烷基酯共聚物，，（4）乙烯/（甲基）丙烯酸共聚物和/或（5）离聚物。该片具有良好的耐撕裂性，抗冲击性，使其适用于包装硬币和其他物品。还公开了由薄膜制成的袋子以及填充有硬币或其他物体的诸如密封袋的物品。

5. 发明授权

US5910374A Moisture barrier film 失效
公开(公告)号：US5910374A
公开(公告)日：1999-06-08
申请号：US431225
申请日：1995-04-28
申请人： Gautam P. Shah
发明人： Gautam P. Shah
IPC分类号： B29C55/12 , B29K23/00 , B29L9/00 , B32B7/02 , B32B7/12 , B32B27/08 , B32B27/32 , B65D65/40
CPC分类号： B32B27/32 , B32B27/08 , B29K2995/0022 , Y10S428/91 , Y10T428/1328 , Y10T428/1331 , Y10T428/1341 , Y10T428/1359 , Y10T428/2826 , Y10T428/31725 , Y10T428/31743 , Y10T428/31746 , Y10T428/31757 , Y10T428/31913 , Y10T428/3192 , Y10T428/31928
摘要： A multiple layer film useful in moisture barrier packaging applications has at least one layer comprising a blend of propylene polymer or copolymer, and a hydrocarbon resin; and two additional layers comprising a propylene polymer or copolymer, ethylene alpha olefin copolymer, ionomer, polybutene, or blends thereof. A core layer of ethylene vinyl alcohol copolymer or other oxygen barrier material, or high density polyethylene, can be included in some embodiments. A preferred embodiment of the multi-layer film exhibits excellent moisture barrier and optical properties, and shrink properties as well if the film has been oriented. High oxygen barrier is also a feature in embodiments including EVOH or other oxygen barrier materials.

6. 发明授权

US5897941A High modulus film 失效
标题翻译：高模量膜
公开(公告)号：US5897941A
公开(公告)日：1999-04-27
申请号：US631442
申请日：1996-04-12
申请人： Gautam P. Shah
发明人： Gautam P. Shah
IPC分类号： B32B27/32 , C08L23/06 , C08L23/08 , C08L23/16 , B65B53/00
CPC分类号： C08L23/06 , B32B27/32 , B32B27/322 , C08L23/08 , C08L23/0815 , C08L2205/02 , C08L23/0846 , Y10S428/91 , Y10T428/1328 , Y10T428/2495 , Y10T428/24992 , Y10T428/31909 , Y10T428/31913 , Y10T428/31935
摘要： A film includes at least one layer comprising a blend of an ethylene polymer having a density of at least 0.925 grams per cubic centimeter, and an ethylene copolymer selected from the group consisting of ethylene/ester copolymer, and ethylene/alpha-olefin copolymer. The film is preferably substantially free from linear low density polyethylene. The film can be a monolayer or multilayer film, and can comprises a core layer comprising an ethylene polymer having a density of at least 0.925 grams per cubic centimeter; and one or more outer layers with the above described blend. At least one intermediate layer comprising an ethylene copolymer having a density of less than 0.925 grams per cubic centimeter can also be included. The film preferably has a thickness of less than 0.60 mils; a shrink force of less than 0.35 pounds in the longitudinal direction, and less than 0.30 pounds in the transverse direction; and a tensile modulus of at least 60,000 psi in the longitudinal direction, and at least 75,000 psi in the transverse direction. The film offers beneficial properties for packaging applications.
摘要翻译：膜包括至少一层，其包含密度为至少0.925克/立方厘米的乙烯聚合物的共混物和选自乙烯/酯共聚物和乙烯/α-烯烃共聚物的乙烯共聚物。该膜优选基本上不含线性低密度聚乙烯。膜可以是单层或多层膜，并且可以包括核心层，其包含密度为至少0.925克/立方厘米的乙烯聚合物; 和一个或多个具有上述共混物的外层。包括密度小于0.925克/立方厘米的乙烯共聚物的至少一个中间层也可以包括在内。膜优选具有小于0.60密耳的厚度; 纵向收缩力小于0.35磅，横向小于0.30磅; 并且在纵向上的拉伸模量为至少60,000psi，并且在横向上具有至少75,000psi。该片为包装应用提供有益的特性。

7. 发明授权

US4726984A Oxygen barrier oriented film 失效
标题翻译：氧阻隔膜
公开(公告)号：US4726984A
公开(公告)日：1988-02-23
申请号：US750705
申请日：1985-06-28
申请人： Gautam P. Shah
发明人： Gautam P. Shah
IPC分类号： B32B27/28 , B29C47/04 , B29C55/02 , B29C67/06 , B29C69/02 , B29D7/00 , B29K23/00 , B29K55/00 , B29L9/00 , B32B27/32 , B05D7/00
CPC分类号： B32B27/32 , Y10T428/1328 , Y10T428/24975 , Y10T428/2826 , Y10T428/31855 , Y10T428/3192 , Y10T428/31928
摘要： A coextruded multiple layer oriented film is provided which comprises a core layer of ethylene vinyl alcohol copolymer, two intermediate adhesive layers, and two outer layers of a blend of ethylene propylene copolymer and polypropylene. A preferred embodiment of the multi-layer film exhibits excellent optical properties, and shrink properties while providing high oxygen barrier especially useful in food packaging applications.
摘要翻译：提供了共挤出的多层取向膜，其包括乙烯乙烯醇共聚物的核心层，两个中间粘合剂层和乙烯丙烯共聚物和聚丙烯共混物的两个外层。多层膜的优选实施方案具有优异的光学性能和收缩性能，同时提供特别适用于食品包装应用的高氧阻隔。

8. 发明授权

US5314749A High density polyethylene shrink film 失效
标题翻译：高密度聚乙烯收缩膜
公开(公告)号：US5314749A
公开(公告)日：1994-05-24
申请号：US34006
申请日：1993-03-19
申请人： Gautam P. Shah
发明人： Gautam P. Shah
IPC分类号： B32B27/32 , B65D75/00 , B32B7/12 , B65D33/00 , B32B27/68
CPC分类号： B65D75/002 , B32B27/322 , Y10S428/91 , Y10T428/2826 , Y10T428/31913 , Y10T428/31928
摘要： A multiple layer shrink film with improved moisture barrier properties is oriented in the longitudinal and/or transverse directions, and comprises an internal layer comprising high density polyethylene, and outer layers each comprising olefinic polymer or copolymer. Intermediate polymeric adhesive layers can optionally be included in those coextruded embodiments which do not melt bond adequately in the absence of such intermediate layers.
摘要翻译：具有改善的防潮性能的多层收缩膜在纵向和/或横向上定向，并且包括包含高密度聚乙烯的内层和各自包含烯属聚合物或共聚物的外层。中间聚合物粘合剂层可以任选地包括在那些共挤出的实施方案中，其在不存在这种中间层的情况下不会充分熔融粘合。

9. 发明授权

US5004647A Oxygen barrier biaxially oriented film 失效
标题翻译：氧阻挡双轴取向薄膜
公开(公告)号：US5004647A
公开(公告)日：1991-04-02
申请号：US199899
申请日：1988-05-27
申请人： Gautam P. Shah
发明人： Gautam P. Shah
IPC分类号： B32B27/08
CPC分类号： B32B27/08 , Y10S428/91 , Y10T428/2826 , Y10T428/31739 , Y10T428/31743 , Y10T428/31913 , Y10T428/31931
摘要： A coextruded multiple layer oriented film comprises a core layer of ethylene vinyl alcohol copolymer, two intermediate adhesive layers, and two outer layers of a blend of linear low density polyethylene and a very low density polyethylene. A preferred embodiment of the multilayer film exhibits improved heat seal strengths, and excellent optics and shrink properties while providing high oxygen barrier especially useful in food packaging applications.
摘要翻译：共挤出的多层取向膜包括乙烯乙烯醇共聚物的核心层，两个中间粘合剂层和线性低密度聚乙烯和极低密度聚乙烯的共混物的两个外层。多层膜的优选实施方案具有改善的热封强度，以及优异的光学和收缩性质，同时提供了特别适用于食品包装应用的高氧阻隔。

10. 发明授权

US4724185A Oxygen barrier oriented film 失效
标题翻译：氧阻隔膜
公开(公告)号：US4724185A
公开(公告)日：1988-02-09
申请号：US776740
申请日：1985-09-17
申请人： Gautam P. Shah
发明人： Gautam P. Shah
IPC分类号： B32B27/28 , B29C47/04 , B29C47/06 , B29C55/02 , B29K23/00 , B29K29/00 , B29K77/00 , B29L9/00 , B32B27/08 , B32B27/30 , B32B27/32 , B32B27/34 , C08J3/24 , C08L23/08 , C08L29/04 , C08L77/00
CPC分类号： C08L23/0815 , B32B27/08 , C08L23/0861 , C08L29/04 , C08L77/00 , C08L2205/02 , C08L23/0853 , C08L2310/00 , Y10S428/91 , Y10T428/1383 , Y10T428/269 , Y10T428/2826 , Y10T428/31743 , Y10T428/31746 , Y10T428/31913
摘要： A coextruded multiple layer oriented film comprises a core layer of a blend of ethylene vinyl alcohol copolymer and polyamide, two intermediate adhesive layers, and two outer layers of a blend of linear low density polyethylene, linear medium density polyethylene, and ethylene vinyl acetate copolymer. A preferred embodiment of the multilayer film exhibits excellent optics and shrink properties while providing high oxygen barrier especially useful in food packaging applications.
摘要翻译：共挤出的多层取向膜包括乙烯乙烯醇共聚物和聚酰胺的共混物的芯层，两个中间粘合剂层和线性低密度聚乙烯，线性中密度聚乙烯和乙烯 - 乙酸乙烯酯共聚物的共混物的两个外层。多层膜的优选实施方案表现出优异的光学和收缩性能，同时提供在食品包装应用中特别有用的高氧阻隔。

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