Water vapor permeable sheet material

Details Water vapor permeable sheet material Water vapor permeable sheet material

1974-07-22

1976-07-06

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

260 25AY, 264 49, 427245, 427246, 428305, 428330, 428425, 428904, 36 45, D06N 704, B32B 300, B32B 702

Patent

active

039682927

ABSTRACT:
There is disclosed a water vapor permeable shoe upper material having at least three layers, the density, thickness and structure of the layers having a defined novel relationship whereby an improved cut tear to stiffness relationship is achieved.

REFERENCES:
patent: 3640829 (1972-02-01), Elton
patent: 3791997 (1974-02-01), Hathorn et al.

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