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    • 4. 发明申请
    • Biaxially stretched laminated polyester film and polyester film for covering
    • 双轴拉伸层压聚酯薄膜和聚酯薄膜
    • US20070148423A1
    • 2007-06-28
    • US11592688
    • 2006-11-03
    • Akira SatoTakashi Suzuki
    • Akira SatoTakashi Suzuki
    • B32B27/36B32B15/04B32B33/00
    • B32B27/36B32B7/02B32B27/08B32B27/18B32B2307/518B32B2367/00Y10T428/24942Y10T428/31678Y10T428/31681Y10T428/31786
    • A biaxially stretched laminated polyester film having tensile break strengths in the machine and transverse directions of 40 to 200 MPa, and satisfying at least one of the following items: (1) wetting tension of at least one side of the film is not less than 48 mN/m; (2) surface resistivity of at least one side of the film is not more than 5×1012 Ω/□; and (3) a barrier layer is provided on at least one side of the film. Such a film is suited for use as a composing material of packages for industrial materials, medicines, hygienic materials, foods, etc., and is also suited as a packaging material which excels in printing ink adhesion and also has excellent laminating compatibility with other materials, antistatic gas barrier properties and hand cutting quality. The present invention also pertains to a biaxially stretched laminated polyester film whose tensile break strength in the machine and transverse directions is 41 to 170 MPa, and such a film can be suitably used as a covering of receptacles of the type which is ripped off in use, such as a covering of press-through packages for medicines such as tablets and capsules, various kinds of foods, industrial parts, etc., and a covering of the cup-type drink containers of which the content is sucked through a straw thrust into the container by breaking through the cover.
    • 在机器和横向的拉伸断裂强度为40〜200MPa的双轴拉伸层压聚酯薄膜,满足以下项目中的至少一个:(1)薄膜的至少一面的润湿张力为48以上 mN / m; (2)膜的至少一侧的表面电阻率不大于5×10 12Ω/□; 和(3)在膜的至少一侧设置有阻挡层。 这种膜适合用作工业材料,药品,卫生材料,食品等的包装材料的组合材料,并且也适合作为印刷油墨附着性优异的包装材料,并且与其它材料具有优异的层压相容性 ,抗静电气体阻隔性能和手工切割质量。 本发明还涉及机器横向拉伸断裂强度为41〜170MPa的双轴拉伸叠层聚酯薄膜,并且这种薄膜可以适合用作在使用中被剥离的类型的容器的覆盖物 诸如片剂和胶囊等药物的压穿包覆物,各种食品,工业部件等的覆盖物,以及通过秸秆推入吸收内容物的杯型饮料容器的覆盖物 容器通过打破盖子。