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公开(公告)号：US06342282B1
公开(公告)日：2002-01-29
申请号：US09569077
申请日：2000-05-11
IPC分类号： B29D2200
CPC分类号： B32B27/08 , B32B7/12 , B32B27/306 , B32B27/32 , B32B27/34 , B32B27/36 , B32B2307/7242 , B32B2307/736 , B32B2323/046 , C08L23/0815 , C08L2205/02 , C08L2666/06 , C09J123/0815 , Y10T428/1328 , Y10T428/1359 , Y10T428/1383 , Y10T428/31743 , Y10T428/31797 , Y10T428/3192
摘要： The invention provides a heat-shrinkable multi-layer film comprising at least a thermoplastic resin layer as the outermost layer (A), a gas barrier resin layer as a core layer (B) and a sealing resin layer as the innermost layer (C), and optionally an adhesive layer between the individual layers, wherein (1) the sealing resin layer of the innermost layer (C) is a layer formed of a resin material (b) comprising a linear ethylene-1-octene copolymer (a) obtained by using a constrained geometry catalyst and having an 1-octene content not lower than 1 wt. % but lower than 20 wt. % and a density higher than 0.885 g/cm3 but not higher than 0.960 g/cm3, and (2) an intermediate layer (D1) formed of at least one resin (c) selected from the group consisting of polyamide resins, thermoplastic polyester resins and ethylene copolymer resins is provided between the outermost layer (A) and the core layer (B). The film has excellent sealing properties, clarity, mechanical strength, stretchability and bag-making property.
摘要翻译： 本发明提供一种热收缩性多层膜，其至少包含作为最外层（A）的热塑性树脂层，作为芯层（B）的阻气性树脂层和作为最内层（C）的密封树脂层， ，和可选地在各层之间的粘合剂层，其中（1）最内层（C）的密封树脂层是由包含线性乙烯-1-辛烯共聚物（a）的树脂材料（b）形成的层，所述线性乙烯-1-辛烯共聚物（a） 通过使用约束几何催化剂并且具有不低于1重量％的1-辛烯含量。 ％但低于20wt。 ％，密度高于0.885g / cm 3，但不高于0.960g / cm 3，以及（2）由至少一种选自聚酰胺树脂，热塑性聚酯树脂（C）的树脂（c）形成的中间层（D1） 并且在最外层（A）和芯层（B）之间设置乙烯共聚物树脂。 该膜具有优异的密封性，透明度，机械强度，拉伸性和制袋性。
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公开(公告)号：US06146726A
公开(公告)日：2000-11-14
申请号：US864093
申请日：1997-05-28
CPC分类号： B32B27/08 , B32B27/32 , C09J123/0815 , C08L2205/02 , C08L23/0815 , Y10T428/1328 , Y10T428/1359 , Y10T428/1383 , Y10T428/31743 , Y10T428/31797 , Y10T428/3192
摘要： The invention provides a heat-shrinkable multi-layer film comprising at least a thermoplastic resin layer as the outermost layer (A), a gas barrier resin layer as a core layer (B) and a sealing resin layer as the innermost layer (C), and optionally an adhesive layer between the individual layers, wherein (1) the sealing resin layer of the innermost layer (C) is a layer formed of a resin material (b) comprising a linear ethylene-1-octene copolymer (a) obtained by using a constrained geometry catalyst and having an 1-octene content not lower than 1 wt. % but lower than 20 wt. % and a density higher than 0.885 g/cm.sup.3 but not higher than 0.960 g/cm.sup.3, and (2) an intermediate layer (D1) formed of at least one resin (c) selected from the group consisting of polyamide resins, thermoplastic polyester resins and ethylene copolymer resins is provided between the outermost layer (A) and the core layer (B). The film has excellent sealing properties, clarity, mechanical strength, stretchability and bag-making property.
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公开(公告)号：US06699549B1
公开(公告)日：2004-03-02
申请号：US09673956
申请日：2000-10-24
IPC分类号： B32B2708
CPC分类号： B32B27/08 , B29C47/0026 , B29C47/065 , B29C47/067 , B29C55/28 , B29C61/003 , B29C71/02 , B29K2067/00 , B29L2009/00 , B32B27/34 , B32B27/36 , B32B37/153 , B32B2038/0028 , B32B2307/736 , B32B2323/043 , B32B2323/046 , B32B2367/00 , B32B2377/00 , B32B2553/00 , B65D2571/00024 , Y10T428/1383 , Y10T428/2826 , Y10T428/31736 , Y10T428/31743
摘要： A polyester-surfaced heat-shrinkable multilayer film exhibiting good printability and adaptability to various automatic packaging processes is provided, including an outer surface layer (a) comprising a polyester resin, an intermediate layer (b) comprising a polyamide resin and an inner surface layer (c) comprising a sealable resin. The film exhibits a heat-shrinkable stress at 50° C. of at most 3 MPa both in longitudinal direction and in transverse direction, and a hot water shrinkability at 90° C. of at least 20%.
摘要翻译： 提供了一种表现出良好的印刷适应性和适用于各种自动包装方法的聚酯表面热收缩多层膜，其包括包含聚酯树脂的外表面层（a），包含聚酰胺树脂的中间层（b）和内表面层 （c）包括可密封树脂。 该薄膜在纵向和横向上在50℃下表现出至多3MPa的热收缩应力，90℃下的热水收缩率至少为20％。
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公开(公告)号：US06436495B1
公开(公告)日：2002-08-20
申请号：US09545878
申请日：2000-04-07
IPC分类号： A47G1922
CPC分类号： B32B27/08 , B32B7/02 , B32B27/32 , B32B27/327 , B32B2307/7242 , B32B2307/736 , B32B2309/105 , B32B2439/70 , Y10S428/91 , Y10T428/1317 , Y10T428/1321 , Y10T428/1324 , Y10T428/1334 , Y10T428/1352 , Y10T428/1359 , Y10T428/1383 , Y10T428/26 , Y10T428/269 , Y10T428/31855 , Y10T428/31913
摘要： A flexible multilayer film suitable as a (food-)packaging material includes a first seal layer comprising principally a metallocene-catalyzed polyolefin, and a second seal layer comprising a copolymer of at least one oxygen-containing monomer and ethylene. The copolymer is set to have a crystal melting point lower than that of the metallocene-catalyzed polyolefin. The second seal layer may preferably have a thickness larger than that of the first seal layer. Because of the provision of the second seal layer adjacent to the first seal layer, the multilayer film is provided with an improved film-formability while retaining the good sealability of the metallocene-catalyzed polyolefin.
摘要翻译： 适合作为（食品）包装材料的柔性多层膜包括主要包含金属茂催化的聚烯烃的第一密封层和包含至少一种含氧单体和乙烯的共聚物的第二密封层。 共聚物的结晶熔点设定低于茂金属催化聚烯烃的熔点。 第二密封层可以优选地具有比第一密封层的厚度更大的厚度。 由于设置与第一密封层相邻的第二密封层，所以在保留茂金属催化聚烯烃的良好密封性的同时，提供了改进的成膜性。
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公开(公告)号：US06416832B1
公开(公告)日：2002-07-09
申请号：US09331508
申请日：1999-06-22
申请人： Tsutomu Uehara , Hitoshi Ishii , Hajime Tsukamoto
发明人： Tsutomu Uehara , Hitoshi Ishii , Hajime Tsukamoto
IPC分类号： A22C1300
CPC分类号： B32B27/08 , B32B7/12 , B32B27/32 , B32B27/34 , B32B27/36 , B32B2307/514 , B32B2307/734 , B32B2367/00 , B32B2377/00 , B32B2439/00 , B32B2439/70 , B32B2553/02 , C08J5/18 , C08J2377/00 , C08L77/00 , C08L77/06 , Y10T428/1324 , Y10T428/1334 , Y10T428/2822 , Y10T428/31725 , Y10T428/31728 , Y10T428/31732 , Y10T428/31743 , Y10T428/3175
摘要： The invention provides a single-layer or multi-layer packaging film or sheet having at least one layer formed of a polyamide resin composition, wherein the layer formed of the polyamide resin composition is a layer (A) formed of a polyamide resin composition comprising a copolymer nylon (c) composed of an aliphatic nylon (co)polymer component (1) and an aromatic nylon (co)polymer component (2) in a proportion of at least 5 wt. %.
摘要翻译： 本发明提供一种具有由聚酰胺树脂组合物形成的至少一层的单层或多层包装膜或片，其中由聚酰胺树脂组合物形成的层是由聚酰胺树脂组合物形成的层（A），其包含 由脂肪族尼龙（共）聚合物组分（1）和芳族尼龙（共）聚合物组分（2）组成的共聚物尼龙（c）的比例至少为5wt。 ％。
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公开(公告)号：US6063462A
公开(公告)日：2000-05-16
申请号：US688878
申请日：1996-07-31
CPC分类号： B32B27/32 , Y10S428/91 , Y10T428/1317 , Y10T428/1321 , Y10T428/1324 , Y10T428/1334 , Y10T428/1352 , Y10T428/1359 , Y10T428/1383 , Y10T428/26 , Y10T428/269 , Y10T428/31855 , Y10T428/31913
摘要： A flexible multilayer film suitable as a (food-)packaging material includes a first seal layer comprising principally a metallocene-catalyzed polyolefin, and a second seal layer comprising a copolymer of at least one oxygen-containing monomer and ethylene. The copolymer is set to have a crystal melting point lower than that of the metallocene-catalyzed polyolefin. The second seal layer may preferably have a thickness larger than that of the first seal layer. Because of the provision of the second seal layer adjacent to the first seal layer, the multilayer film is provided with an improved film-formability while retaining the good sealability of the metallocene-catalyzed polyolefin.
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