发明名称 |
Packaging wrapper for disk-shaped magnetic information carriers |
摘要 |
A packaging wrapper for disk-shaped magnetic information carriers is disclosed. The wrapper is formed by folding over a blank to form a flat wrapper. The wrapper has projecting tabs jutting out laterally from the sides of the front wrapper wall and overlap zones on the rear wrapper wall formed as a result of folding-over of the projecting tabs. The projecting tabs are firmly bonded to the rear wrapper wall by means of welding. The blank for forming the packaging wrapper is formed from a biaxially oriented, opaque multi-ply film comprising a base layer consisting essentially of polypropylene and fillers. The fillers are present in a quantity in the range from 10 to 30% by weight, relative to the total weight of the polypropylene and fillers.
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申请公布号 |
US4863032(A) |
申请公布日期 |
1989.09.05 |
申请号 |
US19880167179 |
申请日期 |
1988.03.11 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
BOTHE, LOTHAR;SCHLOEGL, GUNTER;CRASS, GUENTHER |
分类号 |
B65D85/57;B32B7/02;B32B27/32;G11B33/04 |
主分类号 |
B65D85/57 |
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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