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    Laminate film for wrapping
    1.
    发明授权
    Laminate film for wrapping 失效
    层压薄膜包装

    公开(公告)号：US5460879A

    公开(公告)日：1995-10-24

    申请号：US93875

    申请日：1993-07-20

    申请人： Haruo Hayashida ,  Akihiro Ichige ,  Kozo Kotani ,  Toshio Kawakita ,  Takanori Kume ,  Teruaki Yoshida ,  Takeshi Yamada ,  Yufu Sato

    发明人： Haruo Hayashida ,  Akihiro Ichige ,  Kozo Kotani ,  Toshio Kawakita ,  Takanori Kume ,  Teruaki Yoshida ,  Takeshi Yamada ,  Yufu Sato

    IPC分类号： B32B27/32 ,  B65D65/40 ,  B32B7/12

    CPC分类号： B32B27/32 ,  Y10S428/91 ,  Y10T428/2826 ,  Y10T428/31855 ,  Y10T428/31913

    摘要： A laminate film for wrapping which comprises a layer comprising (A) an ethylene-.alpha.-olefin copolymer having a coefficient of variation of composition distribution (Cx) represented by equation shown below of 0.40 or less and having an ethylene content of 50 mol % or more and at least one layer of a different kind;Cx=.sigma./SCB.sub.avewherein .sigma. is a standard deviation of composition distribution (1/1000 C), and SCB.sub.ave is an average of the number of short chain branchings per 1000 C (1/1000 C).The film is safe and hygienic, less odorous and excellent in transparency, mechanical strength, softness, and low-temperature heat sealing properties and is therefore suitable to automatic wrapping, particularly stretch-wrapping.

    摘要翻译： 一种用于包装的层压膜，其包含（A）由以下所示的等式表示的组成分布变化系数（Cx）为0.40以下且乙烯含量为50摩尔％的（A）乙烯-α-烯烃共聚物，或 更多和至少一层不同种类; Cx = sigma / SCBave，其中sigma是组成分布的标准偏差（1/1000℃），SCBave是每1000℃（1/1000℃）的短链分支数的平均值。 该膜具有安全卫生，气味少，透明度，机械强度，柔软度和低温热封性能优异，因此适用于自动包装，特别是拉伸包装。

    Multilayer packaging film
    3.
    发明授权
    Multilayer packaging film 失效
    多层包装膜

    公开(公告)号：US5736260A

    公开(公告)日：1998-04-07

    申请号：US533553

    申请日：1995-09-25

    申请人： Haruo Hayashida ,  Akihiro Ichige ,  Takeshi Yamada ,  Kazuo Kondo ,  Teruo Tada ,  Toyoki Wano ,  Masaaki Zenigame

    发明人： Haruo Hayashida ,  Akihiro Ichige ,  Takeshi Yamada ,  Kazuo Kondo ,  Teruo Tada ,  Toyoki Wano ,  Masaaki Zenigame

    IPC分类号： B32B27/32 ,  B65D65/40 ,  B65B11/00

    CPC分类号： B32B27/32 ,  Y10S428/91 ,  Y10T428/31913

    摘要： A laminated film useful for packaging includes two outer layers and a core layer of a polypropylene resin interposed therebetween. Each of the outer layers includes (A) an ethylene-.alpha.-olefin copolymer having a density of less than 0.910 g/cm.sup.3 but not less than 0.870 g/cm.sup.3 and an ethylene content of at least 50 mol % and showing only one endothermic peak when analyzed by differential scanning calorimetry (DSC), (B) an ethylene-.alpha.-olefin copolymer having a density of 0.910-0.935 g/cm.sup.3 and an ethylene content of at least 50 mol %, and (C) an anti-fogging agent. The density of (B) is greater by at least 0.008 g/cm.sup.3 than that of (A).

    摘要翻译： 可用于包装的层压膜包括两个外层和插入其间的聚丙烯树脂的芯层。 每个外层包括（A）密度小于0.910g / cm 3但不小于0.870g / cm 3的乙烯-α-烯烃共聚物和至少50mol％的乙烯含量并且仅显示一个吸热峰 当通过差示扫描量热法（DSC）分析时，（B）密度为0.910-0.935g / cm3，乙烯含量为至少50mol％的乙烯-α-烯烃共聚物，（C）防雾剂 。 （B）的密度比（A）的密度高至少0.008g / cm 3。

    Multi-layer stretch wrapping film
    4.
    发明授权
    Multi-layer stretch wrapping film 失效
    多层拉伸包装膜

    公开(公告)号：US6033775A

    公开(公告)日：2000-03-07

    申请号：US980456

    申请日：1997-11-28

    申请人： Haruo Hayashida ,  Eisuke Shiratani ,  Ikuo Yamamoto ,  Akihiro Ichige

    发明人： Haruo Hayashida ,  Eisuke Shiratani ,  Ikuo Yamamoto ,  Akihiro Ichige

    IPC分类号： B32B27/32 ,  C08F297/08 ,  C08L23/02 ,  C08L53/00 ,  B32B27/08 ,  B32B7/12

    CPC分类号： C08L53/00 ,  B32B27/32 ,  C08F297/083 ,  C08L23/02 ,  Y10S428/91 ,  Y10T428/2826 ,  Y10T428/31913 ,  Y10T428/31928

    摘要： A film containing a first layer containing a propylene-based block copolymer (a) obtainable by forming 40 to 85% by weight of a propylene-ethylene copolymer portion (A) having a content of repeating unit derived from ethylene of 1.5 to 6.0% by weight in a first step, and then forming 15 to 60% by weight of a propylene-ethylene copolymer portion (B) having a content of repeating unit derived from ethylene of 7 to 17% by weight in a second step, the intrinsic viscosity of portion (B) being 2 to 5 dl/g, and the ratio of the intrinsic viscosity of portion (B) to the intrinsic viscosity of portion (A) being 0.5 to 1.8, and a second layer containing a polyethylene type resin (b) laminated on at least one surface of the first layer, has a good balance between heat resistance, flexibility, mechanical strength, transparency, cuttability, original-shape resuming property and other desirable properties, and is suitably used for wrapping materials such as foods.

    摘要翻译： 含有含有丙烯类嵌段共聚物（a）的第一层的膜可以通过将由乙烯衍生的重复单元的含量为1.5〜6.0％的丙烯 - 乙烯共聚物部分（A）的40〜85重量％ 重量，然后在第二步中形成15至60重量％的由乙烯重复单元含量为7至17重量％的丙烯 - 乙烯共聚物部分（B）的特性粘度 部分（B）为2〜5dl / g，部分（B）的特性粘度与部分（A）的特性粘度的比例为0.5〜1.8，第二层含有聚乙烯型树脂（b） 层压在第一层的至少一个表面上，在耐热性，柔韧性，机械强度，透明性，可切割性，原始形状恢复性能和其它期望的性能之间具有良好的平衡，并且适合用于包装食品等材料。