Non-blocking seam tape

Details Non-blocking seam tape Non-blocking seam tape

1990-05-15

1992-11-10

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283159, 428351, 428354, 428422, 428346, B32B 2700, B32B 326, B32B 712, B32B 1504

Patent

active

051621495

ABSTRACT:
A non-blocking waterproof seam tape for covering sewn seams of garments is taught. The seam tape is comprised of an expanded porous polytetrafluoroethylene layer in which one surface has been densified, a cured or partially cured polyurethane adhesive layer, and a thermoplastic hot melt adhesive layer. The densified surface of the expanded porous polytetrafluoroethylene layer prevents the entry of the thermoplastic adhesive through cold creep into the expanded porous polytetrafluoroethylene layer while the same tape is stored in roll form.

REFERENCES:
patent: 3953566 (1976-04-01), Gore
patent: 4096227 (1978-06-01), Gore
patent: 4187590 (1980-02-01), Harris et al.
patent: 4194041 (1980-03-01), Gore et al.
patent: 4532316 (1985-07-01), Henn
patent: 4692369 (1987-09-01), Nomi
patent: 4775581 (1988-10-01), Siniscalchi
patent: 4916017 (1990-04-01), Nomi et al.
patent: 4919999 (1990-04-01), Van Soom
patent: 4925732 (1990-05-01), Driskill et al.
Database WPIL, accession No. 85-046124, 1 page.

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