Strapping for orthodontic headgear and other uses

Details Strapping for orthodontic headgear and other uses Strapping for orthodontic headgear and other uses

1977-01-10

1978-12-19

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including stitching and discrete fastener, coating or bond

32 14D, 32 14B, 428 74, 428 76, 428123, B32B 306, B32B 900, A61C 300

Patent

active

041306813

ABSTRACT:
Strapping for orthodontic headgear, wrist watch straps, identificaton straps for hospital use and other uses, comprising a core constituted by a strip of substantially nonstretchable polyester film and a wrapper constituted by a composite strip comprising a layer of polyurethane film and a layer of nonwoven polyester fabric which layers have been bonded together under heat and pressure, the composite strip being wrapped around the side edges of the core with the layer of film on the outside and having its marginal edges overlapped and fused together to form a longitudinal overlap seam by a series of discrete fused stitches, and a method of making the same involving ultrasonic stitching.

REFERENCES:
patent: 2742646 (1956-04-01), Berg
patent: 2874468 (1959-02-01), DeWoskin
patent: 3203099 (1965-08-01), Interlandi
patent: 3389043 (1968-06-01), Clark
patent: 4051555 (1977-10-01), Daly

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