Resin material in sheet form

Details Resin material in sheet form Resin material in sheet form

1982-05-04

1985-12-17

Thomas, Alexander S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428136, 428167, 4283044, 428422, B32B 324

Patent

active

045592543

ABSTRACT:
A sheet of porous resinous material, particularly polytetrafluoroethylene, having a multiplicity of holes formed therethrough. The holes are provided in a plurality of rows extending along the length of the sheet. The sheet has a smaller thickness in the area extending along each row of holes than in its remaining portions.

REFERENCES:
patent: 691804 (1902-01-01), Parker
patent: 4207375 (1980-06-01), Kim et al.
patent: 4229473 (1980-10-01), Elber
patent: 4303714 (1981-12-01), Mercer

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