Packaging material and packaging bag made thereof
    22.
    发明公开
    Packaging material and packaging bag made thereof 有权
    用它制成的包装材料和包装袋

    公开(公告)号:EP1288141A3

    公开(公告)日:2003-11-26

    申请号:EP02255505.6

    申请日:2002-08-06

    IPC分类号: B65D81/32 B29C65/00

    摘要: A packaging material capable of having a desired sealing strength with ease and a packaging bag using such material are provided. A packaging material (1), which serves as either one of a first and a second packaging materials (1, 1A) to be heat-sealed to each other, includes a sealing portion (2). This sealing portion is weaker in sealing strength than other portions and composed of an applied area (3) of a coating agent preventing the heat sealing and a non-applied area (4) of the coating agent. The applied area and the non-applied area are easily changed in an area size from each other depending on the sealing strength required for the sealing portion.

    GUSSET BAG AND METHOD FOR PRODUCING GUSSET BAG

    公开(公告)号:EP3098177B1

    公开(公告)日:2018-10-24

    申请号:EP15740753.7

    申请日:2015-01-23

    IPC分类号: B65D30/16

    摘要: A gusset bag (10) is formed of a pair of flat surface parts (12A and 12B) facing each other, and side gusset parts (14) folded to the inside of the bag. The gusset bag (10) has side heat-sealing portions (16A) at which the sides of the flat surface part (12A) and sides of the side gusset parts (14) are joined at the inner surfaces thereof, side heat-sealing portions (16B) at which the sides of the flat surface part (12B) and the other sides of the side gusset parts (14) are joined at the inner surfaces thereof, and closing sealing portions (18) at which the side heat-sealing portions (16A) and the side heat-sealing portions (16B) are joined at the outer surfaces of the side gusset parts (14) by ultrasonic sealing. With this configuration, in the gusset bag (10), it is possible to easily close the gusset parts, while preventing film pieces or dust from entering the bag in a step of closing the gusset parts.

    POLYETHYLENE SEALANT FILM HAVING HIGH STRENGTH AND PACKAGE USING THE SAME
    30.
    发明公开
    POLYETHYLENE SEALANT FILM HAVING HIGH STRENGTH AND PACKAGE USING THE SAME 审中-公开
    具有高强度的聚乙烯密封膜和使用该膜的包装

    公开(公告)号:EP3192654A1

    公开(公告)日:2017-07-19

    申请号:EP16204736.9

    申请日:2016-12-16

    IPC分类号: B32B27/32 B32B1/08 B32B27/08

    摘要: [Problem]
    It is to provide a polyethylene sealant film having a great strength and good heat sealability even though being thin.
    [Solving Means]
    The above problem is solved by the multilayer polyethylene sealant film produced by the method of producing a multilayer polyethylene sealant film comprising coextruding and stretching a sealant layer comprising a low density polyethylene resin or linear low density polyethylene resin and an orientation layer comprising a polyethylene resin having a melting point higher than the sealant layer by an inflation method at a temperature higher than the melting point of the sealant layer and higher than the Vicat softening temperature but lower than the melting point of the orientation layer.

    摘要翻译: [发明内容]提供即使较薄也具有高强度和良好热封性的聚乙烯密封膜。 [解决手段]上述问题通过用多层聚乙烯密封膜的制造方法制造的多层聚乙烯密封膜来解决,该方法包括共挤出和拉伸包含低密度聚乙烯树脂或线性低密度聚乙烯树脂的密封层和取向层, 在高于密封剂层的熔点且高于维卡软化温度但低于取向层的熔点的温度下通过吹胀法熔点高于密封剂层的聚乙烯树脂。