Strapping joint and method and apparatus for forming same

Details Strapping joint and method and apparatus for forming same Strapping joint and method and apparatus for forming same

1976-06-23

1978-10-10

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

100 33PB, 156218, 156251, 156468, 156515, 156580, B23K 2700

Patent

active

041194497

ABSTRACT:
A joint having improved snag resistance and peel strength is formed between overlapping end portions of a thermoplastic strap by the method and apparatus of the present invention. The thermoplastic strap is formed into a loop having overlapping inner and outer end portions which are joined to one another by a resolidified thin layer of formerly melted material from each of the overlapping strap end portions. Resolidified material extends completely to an inwardly tapered end of the outer strap end portion to provide the improved joint. A resolidified mass of formerly molten material also is present in front of the tapered end to further protect it against snagging.

REFERENCES:
patent: 2638963 (1953-05-01), Frederick et al.
patent: 3075862 (1963-01-01), Hoter
patent: 3442203 (1969-05-01), Kobiella
patent: 3442735 (1969-05-01), Stensaker
patent: 3629035 (1971-12-01), Kuroda
patent: 3687787 (1972-08-01), Grand
patent: 3709758 (1973-01-01), Gilmore

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