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1. 发明授权

US06872462B2 High free shrink, high modulus, low shrink tension film with elastic recovery 有权
标题翻译：高自由收缩，高模量，低收缩张力膜具有弹性回复
公开(公告)号：US06872462B2
公开(公告)日：2005-03-29
申请号：US10634294
申请日：2003-08-05
申请人： William P. Roberts , Ronald D. Moffitt , Richard M. Dayrit , Blaine C. Childress , William J. Gauthier , W. Scott Lambert
发明人： William P. Roberts , Ronald D. Moffitt , Richard M. Dayrit , Blaine C. Childress , William J. Gauthier , W. Scott Lambert
IPC分类号： B32B27/32 , B29C61/06 , B29K23/00 , B29K45/00 , B29K105/02 , B29L7/00 , B29L9/00 , B32B27/08
CPC分类号： B32B27/32 , Y10T428/2495 , Y10T428/31909 , Y10T428/31913 , Y10T428/31928
摘要： A film includes a core layer including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefinic polymer; the film having Young's modulus between about 50,000 and about 200,000 psi, free shrink between about 10% and about 80% at 240° F., and shrink tension of less than about 400 psi, or a shrink force of between about 20 and about 180 grams, at 240° F. First and second intermediate layers including an ethylene copolymer having a melt index less than about 2 g/10 minutes can be optionally included. Alternatively, a film includes a core layer including an ethylene copolymer having melt index less than about 2 g/10 minutes; first and second intermediate layers including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefinic polymer; the film having properties as disclosed above.
摘要翻译：膜包括包含均相无规α-烯烃/环烯烃共聚物的芯层; 第一和第二外层包括烯属聚合物; 该膜的杨氏模量在约50,000至约200,000psi之间，240°F时自由收缩约10％至约80％，收缩张力小于约400psi，收缩力在约20至约180之间可以任选地包括包含熔体指数小于约2g / 10分钟的乙烯共聚物的第一和第二中间层。或者，膜包括芯层，其包含熔体指数小于约2g / 10分钟的乙烯共聚物; 包括均相无规α-烯烃/环烯烃共聚物的第一和第二中间层; 第一和第二外层包括烯属聚合物; 该膜具有如上所述的性质。

2. 发明授权

US6106935A Heat sealable film 有权
标题翻译：热封膜
公开(公告)号：US6106935A
公开(公告)日：2000-08-22
申请号：US287919
申请日：1999-04-07
申请人： W. Scott Lambert , Kimberly Ann Mudar
发明人： W. Scott Lambert , Kimberly Ann Mudar
IPC分类号： B65D65/40 , B32B7/10 , B32B27/00 , B32B27/08 , B32B27/28 , B32B27/30 , B32B27/32 , B32B27/34 , C08J5/18 , C08L23/04 , C08L23/08 , C08L23/10
CPC分类号： C08J5/18 , B32B27/08 , C08J2323/08 , Y10S428/91 , Y10T428/24975 , Y10T428/265 , Y10T428/2817 , Y10T428/31743 , Y10T428/31746 , Y10T428/3175 , Y10T428/31757 , Y10T428/31797 , Y10T428/3192 , Y10T428/31928
摘要： A film includes at least one layer comprising a blend of a first polymer having a crystalline melting point of at least 260.degree. F., and a density of at least 0.925 grams per cubic centimeter, and a second olefinic polymer comprising an ethylene/alpha-olefin copolymer with a density of less than 0.916 grams per cubic centimeter, wherein the film heat seals at a temperature of at least 180.degree. F. The film can include a core layer including an oxygen barrier; and two outer layers each including a blend of a first polymer having a crystalline melting point of at least 260.degree. F., and a density of at least 0.925 grams per cubic centimeter, and a second olefinic polymer comprising an ethylene/alpha-olefin copolymer with a density of less than 0.916 grams per cubic centimeter, wherein the film heat seals at a temperature of at least 180.degree. F. The film can also include one or more intermediate layers disposed between the core layer and respective outer layers, and one or more adhesive layers disposed between respective intermediate and outer layers. Good heat sealability is obtained.
摘要翻译：薄膜包括至少一层，其包含具有至少260°F的结晶熔点和至少0.925克/立方厘米的密度的第一聚合物和包含乙烯/α-烯烃的第二烯烃聚合物的共混物，烯烃共聚物，其密度小于0.916克/立方厘米，其中膜在至少180°F的温度下热封。该膜可以包括包含氧阻隔层的芯层; 和两个外层，每个包括具有至少260°F的结晶熔点和至少0.925克/立方厘米的密度的第一聚合物和包含乙烯/α-烯烃共聚物的第二烯烃聚合物的共混物其密度小于0.916克/立方厘米，其中膜在至少180°F的温度下热封。该膜还可以包括一个或多个设置在芯层和相应外层之间的中间层，以及一个或多个更多的粘合剂层设置在相应的中间层和外层之间。获得良好的热封性。

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