发明名称 |
STACK OF BAGS AND PROCESS AND APPARATUS FOR MANUFACTURING THE SAME |
摘要 |
A stack of bags is provided, which have been made from rectangular sections of synthetic thermo plastic film in that said sections have been folded onto themselves about bottom fold lines and provided with side seam welds and near their open ends with centrally disposed, punched grip holes and with laterally disposed corner portions, which are defined by perforation lines and formed with aligned stacking or hanger holes. Only the rear wall of each bag is provided with perforation lines defining the two upper corner portions of said rear wall and the front wall of the bag is formed in its corner portions with apertures which are defined by lines of cut, which are substantially congruent to and register with the perforation lines. A process of manufacturing such stack of bags and apparatus for carrying out such process are also disclosed. |
申请公布号 |
CA1291079(C) |
申请公布日期 |
1991.10.22 |
申请号 |
CA19870544774 |
申请日期 |
1987.08.18 |
申请人 |
WINDMOELLER & HOELSCHER;WINDMOELLER & HOELSCHER |
发明人 |
MATTIEBE, GUNTER;ULLMANN, KLAUS |
分类号 |
B31B19/14;B31B19/98;B31B23/00;B65D33/00 |
主分类号 |
B31B19/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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