Welded sheet material having uniform joinder seams

Details Welded sheet material having uniform joinder seams Welded sheet material having uniform joinder seams

1987-12-10

1990-12-25

Thomas, Alexander S.

Stock material or miscellaneous articles

Sheets or webs edge spliced or joined

156 731, 156 734, B32B 310

Patent

active

049802135

ABSTRACT:
An integral thermoplastic sheet being formed of a plurality of separate sheets welded together in a longitudinal seam along their edges, the seam having been formed by the melting together of the inner surfaces of the separate sheets and being of uniform welded strength in a direction across the seam in a direction transverse to the longitudinal direction of the seam.

REFERENCES:
patent: 3376179 (1968-04-01), Balamuth
patent: 3443277 (1969-05-01), Frielingsdorf
patent: 3486964 (1969-12-01), Brunlid
patent: 3654043 (1972-04-01), Jacobi
patent: 3804697 (1974-04-01), Jacobi
patent: 4018955 (1977-04-01), Klauke et al.
patent: 4101370 (1978-07-01), Russell
patent: 4126262 (1978-11-01), Thompson et al.
patent: 4289552 (1981-09-01), Hammer

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