Method and apparatus for preparing and utilizing sheet material for packaging purposes
United States Patent 2490781

Inventors:
Cloud, William S.
Publication Date:
12/13/1949
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Assignee:
Cloud, William S.
Primary Class:
Other Classes:
425/512, 425/506, 425/307, 26/92, 264/DIG.073, 83/914, 425/102, 425/504, 53/559, 53/477, 53/556, 425/519, 53/141, 425/508, 264/290.200, 425/237
International Classes:
B29C51/22; B29C55/14; B29C69/00; B65B9/04; B29C51/18; B65B9/00
US Patent References:
2079584Rubber sheet material
2120328Method of shaping sheet material
2141318
2152101Method and apparatus for making capsules by submerged filling action
2168651Packaging process and medium
2232783Method of packaging
2289668Wrapping
2334022Rubber hydrohalide film
2342977Packaging
2362653Method and apparatus for treating rubber articles prior to vulcanization