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1. 发明授权

US5902684A Multilayered Metallocene stretch wrap films 失效
标题翻译：多层茂金属拉伸包膜
公开(公告)号：US5902684A
公开(公告)日：1999-05-11
申请号：US886953
申请日：1997-07-02
申请人： Edward M. Bullard , David V. Dobreski , George N. Eichbauer , Richard E. Leone , W. Mark Dutt
发明人： Edward M. Bullard , David V. Dobreski , George N. Eichbauer , Richard E. Leone , W. Mark Dutt
IPC分类号： B32B27/32
CPC分类号： B32B27/32 , Y10T428/31909 , Y10T428/31913 , Y10T428/31928
摘要： A multilayer, thermoplastic stretch wrap film containing at least four polymeric film layers and comprised of a first outer cling layer, a second outer cling layer, at least one inner polymeric layer and at least one core layer. The first and second layers have a cling force to s each other of at least about 140 grams/inch. The stretch wrap film has at least one inner polymeric layer, located between the first and second layers. The inner polymeric layer comprises a low polydispersity polymer. The low polydispersity polymer has a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g/10 min., and a melt flow ratio (I.sub.20 /I.sub.2) of from about 12 to about 22. The core layer, also located between the outer cling layers, comprises either a random copolymer of propylene and ethylene, a heterophasic copolymer of propylene with domains of ethylene interspersed, a polypropylene homopolymer, or blends thereof. The random ethylene-propylene copolymer has a melt flow ratio of from about 2 to about 15 and an ethylene content in the range of from about 2 to about 6 wt. % of the propylene copolymer. The heterophasic copolymer has a melt flow ratio of about 10 to about 18 and an ethylene content in the range of from about 12 to 30 wt. % of the heterophasic propylene. The polypropylene homopolymer has a melt flow ratio of from about 2 to about 15. The multilayer stretch wrap film has a maximum stretch of at least 340% and a machine direction stress force @ 200% elongation of between about 1400 and about 1900 psi. It is contemplated that additional layers may be added to the present invention.
摘要翻译：包含至少四个聚合物膜层并由第一外部粘合层，第二外部粘合层，至少一个内部聚合物层和至少一个核心层组成的多层热塑性拉伸保鲜膜。第一层和第二层具有至少约140克/英寸的彼此之间的粘附力。拉伸保鲜膜具有位于第一和第二层之间的至少一个内部聚合物层。内部聚合物层包含低分散性聚合物。低分散性聚合物的多分散性为约1至约4，熔体指数（I 2）为约0.5至约10g / 10分钟，熔体流动比（I20 / I2）为约12至约也位于外部粘合层之间的芯层包括丙烯和乙烯的无规共聚物，丙烯与分散的乙烯的畴的多相共聚物，聚丙烯均聚物或其共混物。无规乙烯 - 丙烯共聚物的熔体流动比为约2至约15，乙烯含量为约2至约6重量％。％的丙烯共聚物。多相共聚物的熔体流动比为约10至约18，乙烯含量为约12至30重量％。％的异相丙烯。聚丙烯均聚物具有约2至约15的熔体流动比。多层拉伸保鲜膜具有至少340％的最大拉伸和200％伸长率在约1400至约1900psi之间的机器方向应力。预期可以向本发明添加附加层。

2. 发明授权

US5334428A Multilayer coextruded linear low density polyethylene stretch wrap films 失效
标题翻译：多层共挤出线性低密度聚乙烯拉伸包装膜
公开(公告)号：US5334428A
公开(公告)日：1994-08-02
申请号：US997411
申请日：1992-12-28
申请人： David V. Dobreski , George N. Eichbauer , Michael E. Leach
发明人： David V. Dobreski , George N. Eichbauer , Michael E. Leach
IPC分类号： B32B27/32 , C08J5/18 , C08L23/06 , C08L23/08 , B65D65/02
CPC分类号： B32B27/32 , C08J5/18 , C08L23/06 , C08L23/0815 , C08J2323/08 , C08L2205/02 , C08L2205/03 , C08L23/0853 , C08L2310/00 , Y10T428/1328 , Y10T428/24992 , Y10T428/2826 , Y10T428/31913 , Y10T428/31938
摘要： The present invention relates to multilayer coextruded thermoplastic stretch wrap films useful for the packaging or palletizing of goods. More particularly the films of this invention comprise at least three layers having two outer layers and at least one intermediate layer placed between the outer layers. The intermediate layer includes a low melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms, the low melt index linear low density copolymer having a melt index of between about 0.5 to about 2.5. At least one of the two outer layers includes a high melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms, the high melt index linear low density copolymer having a melt index of greater than about 2.5, the high melt index linear low density copolymer containing from about 3.5 to about 15 weight percent n-hexane extractibles. The n-hexane extractibles are present in an amount sufficient to cause the stretch wrap film to exert a cling force to itself or other surfaces when used in the stretch overwrap packaging of articles.
摘要翻译：本发明涉及可用于包装或码垛货物的多层共挤出的热塑性拉伸包装膜。更具体地说，本发明的薄膜包括至少三层具有两层外层和至少一层位于外层之间的中间层。中间层包括乙烯和少量至少一种具有4至10个碳原子的至少一种α-烯烃的低熔体指数线性低密度共聚物，熔融指数为约0.5至约 2.5。两个外层中的至少一个包括乙烯和少量至少一种具有4至10个碳原子的α-烯烃的高熔体指数线性低密度共聚物，熔融指数线性低密度共聚物的熔体指数为大于约2.5，高熔体指数线性低密度共聚物含有约3.5至约15重量％的正己烷提取物。当用于制品的拉伸外包装包装时，正己烷提取物以足以使拉伸保鲜膜对其自身或其它表面施加粘附力的量存在。

3. 再颁专利

USRE38658E1 Stretch wrap films 有权
公开(公告)号：USRE38658E1
公开(公告)日：2004-11-23
申请号：US10006068
申请日：2001-12-05
申请人： George N. Eichbauer
发明人： George N. Eichbauer
IPC分类号： B32B2732
CPC分类号： B32B27/32 , B32B27/08 , B32B27/18 , B32B2307/5825 , B32B2553/00 , Y10T428/28 , Y10T428/2848 , Y10T428/2861 , Y10T428/2878 , Y10T428/31909 , Y10T428/31913
摘要： The present invention provides for improved polyolefin stretch wrap films having superior cling force, load retention, tear resistance and puncture resistance properties and for the methods of using those stretch wrap films. The stretch wrap films generally have a thickness of from about 0.4 to about 3 mils, a cling force onto itself of at least 140 g/inch, an F-50 dart drop strength of at least about 150 g/mil. The stretch wrap films are constructed in a multilayer fashion having at least one outside cling polyethylene copolymer layer containing a polyethylene resin preferably produced through metallocene catalyst technology.

4. 再颁专利

USRE38429E1 Stretch wrap films 有权
标题翻译：拉伸包膜
公开(公告)号：USRE38429E1
公开(公告)日：2004-02-17
申请号：US09999389
申请日：2001-10-31
申请人： George N. Eichbauer
发明人： George N. Eichbauer
IPC分类号： B32B2732
CPC分类号： B32B27/32 , Y10T428/2495 , Y10T428/2839 , Y10T428/2848 , Y10T428/2861 , Y10T428/2878 , Y10T428/31909 , Y10T428/31913 , Y10T428/31928
摘要： The present invention provides for improved polyolefin cling/slip stretch wrap films having superior load retention, elongation, tear resistance and puncture resistance properties and for the methods of using those stretch wrap films. The stretch wrap films are preferably constructed in a multilayer fashion having an outside cling layer, an outside slip layer, at least one inside puncture resistant layer comprising a metallocene-catalyzed polyethylene resin, and at least one inside transverse direction tear resistant layer.

5. 发明申请

US20100129632A1 MULTI-LAYER STRETCH FILM 审中-公开
标题翻译：多层拉伸薄膜
公开(公告)号：US20100129632A1
公开(公告)日：2010-05-27
申请号：US12623377
申请日：2009-11-21
申请人： George N. Eichbauer , Alexander Tukachinsky
发明人： George N. Eichbauer , Alexander Tukachinsky
IPC分类号： B32B27/32 , B32B27/08 , B32B7/00
CPC分类号： B32B27/32 , B32B7/02 , B32B27/08 , B32B27/327 , B32B2250/242 , B32B2270/00 , B32B2307/514 , B32B2307/518 , B32B2307/54 , B32B2307/5825 , B32B2307/704 , B32B2307/72 , Y10T428/31913 , Y10T428/31938
摘要： A multi-layer stretch film having several polyolefin layers.
摘要翻译：具有多层聚烯烃层的多层拉伸膜。

6. 发明授权

US6093480A Stretch wrap films 失效
标题翻译：拉伸包膜
公开(公告)号：US6093480A
公开(公告)日：2000-07-25
申请号：US861154
申请日：1997-05-21
申请人： George N. Eichbauer
发明人： George N. Eichbauer
IPC分类号： B32B27/32
CPC分类号： B32B27/32 , Y10T428/2495 , Y10T428/2848 , Y10T428/2878
摘要： A multilayer, thermoplastic stretch wrap film containing at least three polymeric film layers and comprised of a first layer and a second layer. The first and second layers may comprise a polymer of two or more monomers, wherein a first monomer is ethylene, in a major amount by weight, and a second monomer is an alpha olefin of from about 3 to about 12 carbon atoms, in a minor amount by weight. If the first and second layers are outer layers, they have a cling force to each other of at least about 140 grams/inch. The stretch wrap film also has at least one inner polymeric layer, located between the first and second layers. The inner polymeric layer comprises a low polydispersity polymer having a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g/10 min., and a melt flow ratio (I.sub.20 /I.sub.2) of from about 12 to about 22. The inner layer(s) comprise(s) from about 5 wt. % to about 40 wt. % of the stretch wrap film so as to produce a film having a maximum stretch of at least 340%, a F-50 dart drop value of at least about 130 g/mil, a machine directional tear resistance of at least about 125 g/mil and a transverse directional tear resistance of at least about 500 g/mil. It is contemplated that additional outer layers may be added such an outer high cling layer or an outer slip layer, as well as additional inner layers.
摘要翻译：包含至少三个聚合物膜层并由第一层和第二层组成的多层热塑性拉伸保鲜膜。第一层和第二层可以包含两种或多种单体的聚合物，其中第一单体是主要重量的乙烯，第二单体是次要的约3至约12个碳原子的α-烯烃重量。如果第一层和第二层是外层，则它们具有至少约140克/英寸的彼此之间的粘附力。拉伸包装膜还具有位于第一和第二层之间的至少一个内部聚合物层。内部聚合物层包含多分散性为约1至约4，熔体指数（I 2）为约0.5至约10g / 10分钟的低多分散性聚合物和熔体流动比（I20 / I2）约12至约22.内层包含约5wt。％至约40wt。％的拉伸包装膜，以便产生具有至少340％的最大拉伸度，至少约130g / mil的F-50飞镖降落值，至少约125g / 密耳和至少约500g / mil的横向撕裂阻力。可以设想，可以添加额外的外层，例如外部高附着层或外部滑动层，以及附加的内层。

7. 发明授权

US5907942A Stretch wrap films 失效
标题翻译：拉伸包膜
公开(公告)号：US5907942A
公开(公告)日：1999-06-01
申请号：US861151
申请日：1997-05-21
申请人： George N. Eichbauer
发明人： George N. Eichbauer
IPC分类号： B32B27/32 , B65D75/00 , C08L23/08 , B65B53/00
CPC分类号： B32B27/32 , B65D75/006 , C08L23/0815
摘要： A method of stretch wrapping an item with a multilayer, thermoplastic stretch wrap film. The stretch wrap film containing at least three polymeric film layers and comprised of a first layer and a second layer. The first and second layers may comprise a polymer of two or more monomers, wherein a first monomer is ethylene, in a major amount by weight, and a second monomer is an alpha olefin of from about 3 to about 12 carbon atoms, in a minor amount by weight. If the first and second layers are outer layers, they have a cling force to each other of at least about 140 grams/inch. The stretch wrap film also has at least one inner polymeric layer, located between the first and second layers. The inner polymeric layer comprises a low polydispersity polymer having a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g/10 min, and a melt flow ratio (I.sub.20 /I.sub.2) of from about 12 to about 22. The inner layer(s) comprise(s) from about 5 wt. % to about 40 wt. % of the stretch wrap film so as to produce a film having a maximum stretch of at least 340%, a F-50 dart drop value of at least about 130 g/mil, a machine directional tear resistance of at least about 125 g/mil and a transverse directional tear resistance of at least about 500 g/mil. It is contemplated that additional outer layers may be added such an outer high cling layer or an outer slip layer, as well as additional inner layers.
摘要翻译：一种用多层热塑性拉伸包裹膜拉伸包装物品的方法。包含至少三个聚合物膜层并且包括第一层和第二层的拉伸包装膜。第一层和第二层可以包含两种或多种单体的聚合物，其中第一单体是主要重量的乙烯，第二单体是次要的约3至约12个碳原子的α-烯烃重量。如果第一层和第二层是外层，则它们具有至少约140克/英寸的彼此之间的粘附力。拉伸包装膜还具有位于第一和第二层之间的至少一个内部聚合物层。内部聚合物层包含多分散性为约1至约4，熔体指数（I 2）为约0.5至约10g / 10分钟的低多分散性聚合物和熔体流动比（I20 / I2）为约12至约22.内层包含约5wt。％至约40wt。％的拉伸包装膜，以便产生具有至少340％的最大拉伸度，至少约130g / mil的F-50飞镖降落值，至少约125g / 密耳和至少约500g / mil的横向撕裂阻力。可以设想，可以添加额外的外层，例如外部高附着层或外部滑动层，以及附加的内层。

8. 发明申请

US20090269566A1 PRE-STRETCHED MULTI-LAYER STRETCH FILM 审中-公开
标题翻译：预拉伸多层拉伸薄膜
公开(公告)号：US20090269566A1
公开(公告)日：2009-10-29
申请号：US12428345
申请日：2009-04-22
申请人： George N. Eichbauer , Alexander Tukachinsky
发明人： George N. Eichbauer , Alexander Tukachinsky
IPC分类号： B32B27/32 , B32B27/08
CPC分类号： B32B27/32 , B32B7/03 , B32B27/08 , B32B27/16 , B32B27/18 , B32B27/308 , B32B27/327 , B32B2270/00 , B32B2307/50 , B32B2307/514 , B32B2307/54 , B32B2307/5825 , B32B2307/704 , B32B2307/72 , B32B2553/00 , Y10T428/31913
摘要： A multi-layer stretch film includes multiple layers of polyolefins. A multi-layer stretch film may include two or more layers including a cling layer, a non-cling layer, or a core layer. A multi-layer stretch film includes a pre-stretched multi-layer stretch film having two or more layers.
摘要翻译：多层拉伸膜包括多层聚烯烃。多层拉伸膜可以包括两层或多层，包括粘附层，非粘附层或芯层。多层拉伸膜包括具有两层以上的预拉伸的多层拉伸膜。

9. 发明授权

US5922441A Stretch wrap films 失效
标题翻译：拉伸包膜
公开(公告)号：US5922441A
公开(公告)日：1999-07-13
申请号：US873004
申请日：1997-06-11
申请人： George N. Eichbauer
发明人： George N. Eichbauer
IPC分类号： B32B27/32
CPC分类号： B32B27/322 , Y10T428/2495 , Y10T428/2839 , Y10T428/2848 , Y10T428/2878 , Y10T428/31909 , Y10T428/31913 , Y10T428/31928
摘要： A multilayer, thermoplastic stretch wrap film containing at least three polymeric film layers and comprised of an inner polymeric layer. The inner polymeric layer comprises a blend of a low polydispersity polymer and either a high pressure low density polyethylene resin, a very low density polyethylene resin or a combination thereof. The low polydispersity polymer has a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g/10 min., and a melt flow ratio (I.sub.20 /I.sub.2) of from about 12 to about 22. The high pressure low density polyethylene resin has a melt index of from about 1 to about 10 g/10 min., and a density of from about 0.9 to about 0.935 g/cm.sup.3. The very low density polyethylene resin has a melt index of from about 0.5 to about 5 g/10 min., and a density of from about 0.880 to about 0.912 g/cm.sup.3. The stretch wrap film may include a first layer and a second layer. The first and second layers may comprise a polymer of two or more monomers, wherein a first monomer is ethylene, in a major amount by weight, and a second monomer is an alpha olefin of from about 3 to about 12 carbon atoms, in a minor amount by weight. If the first and second layers are outer layers, they have a cling force to each other of at least about 140 grams/inch. The stretch wrap film has a maximum stretch of at least 340% and a F-50 dart drop value of at least about 150 g/mil. It is contemplated that additional outer layers may be added such an outer high cling layer or an outer slip layer, as well as additional inner layers.
摘要翻译：包含至少三个聚合物膜层并由内部聚合物层组成的多层热塑性拉伸保鲜膜。内部聚合物层包含低分散性聚合物和高压低密度聚乙烯树脂，极低密度聚乙烯树脂或其组合的共混物。低分散性聚合物的多分散性为约1至约4，熔体指数（I 2）为约0.5至约10g / 10分钟，熔体流动比（I20 / I2）为约12至约高压低密度聚乙烯树脂的熔体指数为约1至约10g / 10分钟，密度为约0.9至约0.935g / cm 3。极低密度聚乙烯树脂的熔体指数为约0.5至约5g / 10min，密度为约0.880至约0.912g / cm 3。拉伸包装膜可以包括第一层和第二层。第一层和第二层可以包含两种或多种单体的聚合物，其中第一单体是主要重量的乙烯，第二单体是次要的约3至约12个碳原子的α-烯烃重量。如果第一层和第二层是外层，则它们具有至少约140克/英寸的彼此之间的粘附力。拉伸保鲜膜具有至少340％的最大拉伸和至少约150g / mil的F-50飞镖降落值。可以设想，可以添加额外的外层，例如外部高附着层或外部滑动层，以及附加的内层。

10. 发明授权

US5907943A Stretch wrap films 失效
标题翻译：拉伸包膜
公开(公告)号：US5907943A
公开(公告)日：1999-06-01
申请号：US872806
申请日：1997-06-11
申请人： George N. Eichbauer
发明人： George N. Eichbauer
IPC分类号： B32B27/32 , B65B53/00
CPC分类号： B32B27/322
摘要： A method for wrapping a multilayer, thermoplastic stretch wrap film containing at least three polymeric film layers and comprised of an inner polymeric layer. The inner polymeric layer comprises a blend of a low polydispersity polymer and either a high pressure low density polyethylene resin, a very low density polyethylene resin or a combination thereof. The low polydispersity polymer has a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g/10 min., and a melt flow ratio (I.sub.20 /I.sub.2) of from about 12 to about 22. The high pressure low density polyethylene resin has a melt index of from about 1 to about 10 g/10 min., and a density of from about 0.9 to about 0.935 g/cm.sup.3. The very low density polyethylene resin has a melt index of from about 0.5 to about 5 g/10 min., and a density of from about 0.880 to about 0.912 g/cm.sup.3. The stretch wrap film may include a first layer and a second layer. The first and second layers may comprise a polymer of two or more monomers, wherein a first monomer is ethylene, in a major amount by weight, and a second monomer is an alpha olefin of from about 3 to about 12 carbon atoms, in a minor amount by weight. If the first and second layers are outer layers, they have a cling force to each other of at least about 140 grams/inch. The stretch wrap film has a maximum stretch of at least 340% and a F-50 dart drop value of at least about 150 g/mil. It is contemplated that additional outer layers may be added such an outer high cling layer or an outer slip layer, as well as additional inner layers.
摘要翻译：一种用于包裹含有至少三个聚合物膜层并由内部聚合物层组成的多层热塑性拉伸保鲜膜的方法。内部聚合物层包含低分散性聚合物和高压低密度聚乙烯树脂，极低密度聚乙烯树脂或其组合的共混物。低分散性聚合物的多分散性为约1至约4，熔体指数（I 2）为约0.5至约10g / 10分钟，熔体流动比（I20 / I2）为约12至约高压低密度聚乙烯树脂的熔体指数为约1至约10g / 10分钟，密度为约0.9至约0.935g / cm 3。极低密度聚乙烯树脂的熔体指数为约0.5至约5g / 10min，密度为约0.880至约0.912g / cm 3。拉伸包装膜可以包括第一层和第二层。第一层和第二层可以包含两种或多种单体的聚合物，其中第一单体是主要重量的乙烯，第二单体是次要的约3至约12个碳原子的α-烯烃重量。如果第一层和第二层是外层，则它们具有至少约140克/英寸的彼此之间的粘附力。拉伸保鲜膜具有至少340％的最大拉伸和至少约150g / mil的F-50飞镖降落值。可以设想，可以添加额外的外层，例如外部高附着层或外部滑动层，以及附加的内层。

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