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公开(公告)号:US3812769A
公开(公告)日:1974-05-28
申请号:US31296172
申请日:1972-12-07
申请人: CANADIAN IND
发明人: BARNES J , ROWLEY E , THOMAS C , BIZON E , ROBERTSON C
IPC分类号: B31B1/84 , B31B23/02 , B31B23/14 , B31B23/26 , B31B23/60 , B31B39/00 , B31B39/02 , B31B39/14 , B31B39/26 , B31B39/60 , B31B41/60
CPC分类号: B31B70/00 , B31B70/36 , B31B70/855 , B31B2160/10
摘要: An apparatus and method for the manufacture of bags from a length of plastic film by folding inward and sealing together the longitudinal margins of the film to form a tube, and then sealing the tube transversely. The apparatus can be employed to manufacture valve bags having the valve formed by an unsealed portion of the longitudinal margins of the length of film. The length of film may be constituted by multiple plies of film.
摘要翻译: 一种用于通过向内折叠并将膜的纵向边缘密封在一起以形成管,然后横向密封管的用于从塑料膜的长度制造袋的装置和方法。 该装置可用于制造具有由膜长度的纵向边缘的未密封部分形成的阀的阀袋。 膜的长度可以由多层胶片构成。