发明授权
- 专利标题: FILMS, PACKAGING AND METHODS FOR MAKING THEM
- 专利标题(中): 薄膜,包装及其制备方法
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申请号: EP03706523.2申请日: 2003-02-17
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公开(公告)号: EP1480893B1公开(公告)日: 2005-12-14
- 发明人: OSGOOD, Dave
- 申请人: UCB, S.A.
- 申请人地址: Allée de la Recherche 60 1070 Bruxelles BE
- 专利权人: UCB, S.A.
- 当前专利权人: UCB, S.A.
- 当前专利权人地址: Allée de la Recherche 60 1070 Bruxelles BE
- 代理机构: Brand, Thomas Louis
- 优先权: GB0204604 20020227
- 国际公布: WO2003072454 20030904
- 主分类号: B65D75/58
- IPC分类号: B65D75/58 ; B65B61/18
摘要:
There is described an optionally flexible and/or polymeric packaging film (e.g. BOPP) having at least one tear line (5) and at least one tab (7) thereon, where the tab (7) has a free end, an end attached to the film and free sides connecting the two ends, the tab (7) positioned so the axis of at least one tear line (5) passes through both ends of the tab (7) characterised in that: (a) at least one of the free sides of the tab (7) taper outwardly from the attached end and the tear line (5); and (b) at least one angle theta (theta) is an acute angle greater than about 5° where theta (theta) is defined as an angle subtending the free end of the tab (7) measured between: (i) an axis defined by the average direction of one of the tab (7) sides averaged over a the last quarter of the maximum length of the tab (7) starting from the attached end; and (ii) an axis defined by the average direction of the tear line (5) along the film. A method of preparing such films and packaging articles (such as cigarette cartons) over-wrapped with such films are also described.
公开/授权文献
- EP1480893A1 FILMS, PACKAGING AND METHODS FOR MAKING THEM 公开/授权日:2004-12-01
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