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1. 发明授权

US4747815A Collection of bags and method of preparing the same 失效
标题翻译：收集袋子及其制备方法
公开(公告)号：US4747815A
公开(公告)日：1988-05-31
申请号：US931885
申请日：1986-11-17
申请人： Gordon L. Benoit , James R. Gavin , Ned R. Pendleton , William Randolph
发明人： Gordon L. Benoit , James R. Gavin , Ned R. Pendleton , William Randolph
IPC分类号： B31B27/00 , B65D30/00 , B65B1/14 , B65D30/02
CPC分类号： B65D31/00 , B31B2219/924 , B31B2221/50 , Y10S493/963
摘要： The present invention relates to a collection of ultra-thin bags and a collection of bags per se wherein said bags are made by providing two separated thermoplastic films; forming transversely across each separated film, lines of weakness extending from one edge of each film to the other, with each line spaced from the next a bag length distance apart; bringing the films together in face-to-face relationship with the lines of weakness across one film in registration with those of the other films; sealing the films transversely along lines parallel with and immediately adjacent to the lines of weakness; slit-sealing the film layers at one or more bag width intervals to complete individual but interconnected bag structures; and collecting each strip of interconnected bags into a volumetrically efficient form.
摘要翻译：本发明涉及一种超薄袋的集合以及袋本身的集合，其中所述袋通过提供两个分离的热塑性薄膜制成; 跨越每个分离的膜横向形成，弱线从每个膜的一个边缘延伸到另一个边缘，每条线与下一个袋长度间隔开; 将电影与面对面的关系融合在一起，与另一部电影注册的电影薄弱; 沿着与弱线平行并紧邻弱线的线横向密封薄膜; 以一个或多个袋宽间隔对膜层进行狭缝密封，以完成个体但相互连接的袋结构; 并将每条相互连接的袋子收集成体积有效的形式。

2. 发明授权

US6013378A HMW HDPE film with improved impact strength 失效
标题翻译： HMW HDPE薄膜具有改善的冲击强度
公开(公告)号：US6013378A
公开(公告)日：2000-01-11
申请号：US818366
申请日：1997-03-17
申请人： Thomas A. White , Ned R. Pendleton
发明人： Thomas A. White , Ned R. Pendleton
IPC分类号： B32B27/32
CPC分类号： B32B27/32 , Y10T428/31909 , Y10T428/31913
摘要： A polymeric multilayer film is disclosed that has improved gloss, dart drop and total energy dart drop while having structural qualities that are not significantly compromised. The film is composed of first film layer of a low polydispersity polyethylene copolymer and a second film layer of a high molecular weight high density polyethylene (HMW HDPE) polymer. The first film layer polymer has a polydispersity of from about 1 to about 4. In a preferred embodiment, this low polydispersity polymer is formed in the presence of a metallocene catalyst. The HMW HDPE polymer has a melt index of less than 0.1 and a density of at least about 0.940 g/cm.sup.3. Any of the layers of the film may be constructed of polymer blends with additional layers being contemplated.
摘要翻译：公开了一种聚合物多层膜，其具有改善的光泽度，飞镖降落和总能量飞镖降落，同时具有未被显着损害的结构质量。该膜由低分散性聚乙烯共聚物的第一膜层和高分子量高密度聚乙烯（HMW HDPE）聚合物的第二膜层组成。第一膜层聚合物具有约1至约4的多分散性。在优选的实施方案中，该低分多分子聚合物是在金属茂催化剂存在下形成的。 HMW HDPE聚合物具有小于0.1的熔体指数和至少约0.940g / cm 3的密度。膜的任何层可以由预期具有附加层的聚合物共混物构成。

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