PROCESS FOR MAKING PAPER AND AIR-PERVIOUS CARDBOARD OR BOARDLIKE STRUCTURES PREDOMINANTLY OF POLYTETRAFLUOROETHYLENE
United States Patent 3528879

Inventors:
Kometani, Yutaka
Koizumi, Shun
Kubota, Kazuo
Nakazima, Takeaki
Publication Date:
09/15/1970
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Assignee:
DAIKIN IND LTD
Primary Class:
162/157.500
Other Classes:
428/401, 264/127, 162/100
International Classes:
C08J5/04; C08J5/18; H01H33/70; D21F11/00; D21H5/12




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