Polyester film with a high oxygen barrier, the use of the film and process for its production
    1.
    发明授权
    Polyester film with a high oxygen barrier, the use of the film and process for its production 有权
    聚酯薄膜具有高氧阻隔,使用薄膜和工艺生产

    公开(公告)号:US06534169B2

    公开(公告)日:2003-03-18

    申请号:US09275392

    申请日:1999-03-24

    IPC分类号: B32B2706

    摘要: The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a polymer or a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 60% by weight of ethylene terephthalate units and/or units from aliphatic, cycloaliphatic, or aromatic diols and/or dicarboxylic acids, with the proviso that the base layer has a diethylene glycol content in the range from 0.9 to 3.0% by weight.

    摘要翻译: 本申请公开了一种透明的双轴取向聚酯膜,其具有至少80重量%的基层,其由热塑性聚酯组成,并具有至少一个外层,其中外层由聚合物或混合物 包含至少40重量%的2,6-萘二甲酸乙二醇酯单元和至多60重量%的来自脂族,脂环族或芳族二醇和/或二羧酸的对苯二甲酸乙二醇酯单元和/或单元的聚合物,条件是 基础层的二甘醇含量为0.9-3.0重量%。

    Biaxially oriented polyester film with high oxygen barrier, its use, and process for its production
    3.
    发明授权
    Biaxially oriented polyester film with high oxygen barrier, its use, and process for its production 失效
    双向拉伸聚酯薄膜,具有高氧气阻隔,其用途及其生产工艺

    公开(公告)号:US06428882B1

    公开(公告)日:2002-08-06

    申请号:US09079238

    申请日:1998-05-14

    IPC分类号: B32B1508

    摘要: A biaxially oriented polyester film is disclosed which has a base layer of at least 80% by weight of a thermoplastic polyester, and which has a cover layer and, located on the cover layer, a layer functioning as an O2 barrier, wherein said cover layer is composed of a polymer or of a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units; 0% up to 40% by weight of ethylene terephthalate units; and, if desired, up to 60% by weight of units from other aliphatic, cycloaliphatic or aromatic diols and/or aliphatic, cycloaliphatic or aromatic dicarboxylic acids; with the proviso that the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the cover layer. The film has particularly low atmospheric oxygen transmission and has high gloss. It is particularly suitable for packaging light- and air-sensitive foodstuffs and other light- and air-sensitive consumable items, and also for producing insulating materials.

    摘要翻译: 公开了一种双轴取向聚酯膜,其具有至少80重量%的热塑性聚酯的基层,并且其具有覆盖层,并且位于覆盖层上,具有用作O 2阻挡层的层,其中所述覆盖层 由聚合物或聚合物的混合物组成,其包含至少40重量%的2,6-萘二甲酸乙二醇酯单元; 0%至40%重量的对苯二甲酸乙二醇酯单元; 并且如果需要,高达60重量%的来自其它脂族,脂环族或芳族二醇和/或脂肪族,脂环族或芳族二羧酸的单元; 条件是聚酯膜的Tg2值高于基层的Tg2值但低于覆盖层的Tg2值。 该膜具有特别低的大气氧气透过率,并具有高光泽度。 特别适用于包装光敏和空气敏感的食品以及其他光和空气敏感的消耗品,也可用于生产绝缘材料。

    Coextruded, hot-sealable and peelable polyester film having low peeling resistance, process for its production and its use
    4.
    发明授权
    Coextruded, hot-sealable and peelable polyester film having low peeling resistance, process for its production and its use 失效
    具有低剥离性的共挤出,可热封和可剥离的聚酯薄膜,其制造方法及其用途

    公开(公告)号:US07288312B2

    公开(公告)日:2007-10-30

    申请号:US10953664

    申请日:2004-09-29

    IPC分类号: B32B7/02

    摘要: The invention more particularly relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting of a) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.0 to 8.0 μm (based on the mass of the top layer (A)), wherein c) the polyester being composed of 30-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-70 mol % of units which derive from at least one aliphatic dicarboxylic acid, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.3 and e) the layer thickness of the top layer (A) dA being from 0.5 to 2.5 μm.

    摘要翻译: 本发明更具体地涉及一种共挤出透明的双轴取向聚酯膜,其包含可从至少APET剥离的基底层(B)和可热封顶层(A),所述可热封和可剥离的顶层(A)由 )80-98重量%的聚酯和b)2-10重量%的平均直径d <50> 2.0至8.0微米的无机和/或有机颗粒(基于 顶层(A)),其中c)聚酯由30-95mol%的衍生自至少一种芳族二羧酸的单元和5-70mol%衍生自至少一种脂族二羧酸的单元组成, d)顶层(A)的粒径d <50%和层厚度d A A的比例大于1.3,e)顶层的层厚度( A)d A a为0.5至2.5μm。

    Polyester film with surface topography matched to the intended use, the use of the film and process for its production
    8.
    发明授权
    Polyester film with surface topography matched to the intended use, the use of the film and process for its production 失效
    具有表面形貌的聚酯薄膜符合预期用途,使用薄膜和方法生产

    公开(公告)号:US06537647B2

    公开(公告)日:2003-03-25

    申请号:US09274772

    申请日:1999-03-24

    IPC分类号: B32B502

    摘要: The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a polymer or a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 60% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, with the proviso that the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the outer layer, where the base layer comprises particles and the Ra value of at least one surface is between 1 and 1000. The film has low gas transmission. It is particularly suitable for packaging uses, specifically for packaging foodstuffs and other consumable items, or as magnetic tape film and as capacitor film.

    摘要翻译: 本申请公开了一种透明的双轴取向聚酯膜,其具有至少80重量%的基层,其由热塑性聚酯组成,并具有至少一个外层,其中外层由聚合物或混合物 包含至少40重量%的2,6-萘二甲酸乙二醇酯单元和至多60重量%的来自脂环族或芳族二醇和/或二羧酸的对苯二甲酸乙二醇酯单元和/或单元的聚合物,条件是Tg2值 的聚酯薄膜的Tg2值高于外层的Tg2值,但低于外层的Tg2值,其中基层包含颗粒,并且至少一个表面的Ra值在1至1000之间。该膜具有低气体传输 。 特别适用于包装用途,特别是用于包装食品和其他消耗品,或作为磁带膜和电容器膜。

    Use of a transparent polyester film as a gas/flavor barrier film
    9.
    发明授权
    Use of a transparent polyester film as a gas/flavor barrier film 失效
    使用透明聚酯膜作为气体/香料阻隔膜

    公开(公告)号:US06391410B1

    公开(公告)日:2002-05-21

    申请号:US09274777

    申请日:1999-03-24

    IPC分类号: B32B2736

    摘要: The application discloses the use of a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, where the outer layer is composed of a polymer or of a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 60% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, with the proviso that the Tg2 value of the polymer film is above the Tg2 value of the base layer but below the Tg2 value of the outer layer, has a barrier film with respect to the gases H2O, N2, CO2, He and flavors. It is particularly suitable for packaging applications, specifically for packaging foods and other consumable items.

    摘要翻译: 该申请公开了使用透明的双轴取向的聚酯薄膜,其具有至少80重量%的基础层,其由热塑性聚酯组成,并且具有至少一个外层,其中外层由聚合物或 的聚合物混合物,其包含至少40重量%的2,6-萘二甲酸乙二醇酯单元和至多60重量%的来自脂环族或芳族二醇和/或二羧酸的对苯二甲酸乙二醇酯单元和/或单元,条件是 聚合物膜的Tg2值高于基层的Tg2值但低于外层的Tg2值,相对于气体H 2 O,N 2,CO 2,He和香料具有阻挡膜。 特别适用于包装食品和其他耗材的包装应用。