C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
18/33
C08J 7/04 (2006.01) B29C 55/12 (2006.01) B32B 27/32 (2006.01) C08J 9/00 (2006.01) C08L 23/00 (2006.01)
Patent
CA 1323153
0636p Hill Case 1 Heat-Sealable Microporous Polypropylene Films Summary of the Invention This invention relates to a microporous film having a heat-sealable layer on one or both sides thereof. The poros- ity and permeability of the microporous layer are retained despite the application of the heat-sealable layer.
560913
Hercules Incorporated
Moffat & Co.
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