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    Wrapping materials
    1.
    发明公开
    Wrapping materials 审中-公开
    Verpackungsmaterialen

    公开(公告)号：EP0968929A1

    公开(公告)日：2000-01-05

    申请号：EP99112816.6

    申请日：1999-07-02

    申请人： CARRS PAPER LIMITED

    发明人： Bond, Michael Peter

    IPC分类号： B65D65/14 ,  B65D65/40 ,  B65D75/58

    CPC分类号： B32B3/28 ,  B32B3/266 ,  B32B7/14 ,  B32B2305/08 ,  B32B2439/00 ,  B65D65/403 ,  B65D75/5844 ,  B65D81/03

    摘要： Wrapping material (12, 12a, 32) of the kind comprising a layer of a corrugated sheet material (15, 35) and a further layer of a flexible sheet material (14, 34) bonded together to form a composite material, the corrugated sheet material (15, 35) having on its exposed face a coating of cohesive adhesive material (A) such that when two portions of the corrugated sheet material are brought into contact they adhere to one-another, is provided with at least one line of weakness (16, 16a, 39) formed in the material to extend along the length of the material in a direction transverse to the corrugations, so as to establish a line along which the material may be torn to facilitate opening of a package formed from the composite material. The line of weakness may comprise a gap (16, 16c) in the corrugated layer (15, 35), or a score line, or a line of slits (39) or perforations formed at least in the corrugated layer. The cohesive coating (A) may be formed with a gap (36) in which the line of weakness (39) is located. Alternatively, a masking strip (55) may be used to cover part of the coating. Preferably there are two lines of weakness within the gap in the coating or adjacent to the masking strip so as to form a tear strip (40).

    摘要翻译： 包括波纹片材（15,35）层和粘合在一起以形成复合材料的另一层柔性片材（14,34）的类型的包裹材料（12,12a，32），波纹片 材料（15,35）在其暴露的表面上具有粘合粘合剂材料（A）的涂层，使得当波纹片材的两个部分接触时，它们彼此粘合，设置有至少一条弱点 （16,16a，39）形成在所述材料中以沿着与所述波纹横向的方向沿着所述材料的长度延伸，以便建立一条线，所述材料沿着该线可以被撕开以便于打开由所述复合材料形成的包装 材料。 弱线可以包括波纹层（15,35）中的间隙（16,16c），或至少在波纹层中形成的刻痕线或切口线（39）或穿孔线。 粘合涂层（A）可以形成有缺陷（39）所在的间隙（36）。 或者，掩模条（55）可以用于覆盖涂层的一部分。 优选地，在涂层中的间隙内或与掩模条相邻的位置处存在两条弱点，以形成撕条（40）。