Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1986-03-24
1988-05-31
Kittle, John E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156290, 428286, 428340, 428516, 428970, B37B 2714
Patent
active
047480700
ABSTRACT:
Tear strength of biaxially oriented polypropylene film is increased by laminating thereto a fibrous web of polypropylene fiber under conditions whereby the orientation of the film is retained.
REFERENCES:
patent: 4035543 (1977-07-01), Draper et al.
patent: 4181550 (1980-01-01), Paine
patent: 4288499 (1981-09-01), Kielbania, Jr.
patent: 4348444 (1982-09-01), Craig
Alexander William S.
Hercules Incorporated
Kittle John E.
Schwartz P. R.
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