Method of producing corners in channel material using ultrasonic

Details Method of producing corners in channel material using ultrasonic Method of producing corners in channel material using ultrasonic

1977-12-01

1980-09-23

Goolkasian, John T.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

40152, 40154, 40549, 49DIG2, 52656, 156 731, 156204, 156515, 1565802, 228 1R, 228110, 403401, B32B 3118, A47G 106

Patent

active

042240913

ABSTRACT:
A method of producing a corner in thermoplastic flexible channel material having a base portion and at least one leg comprises flattening the leg portion outwardly while folding the material with a "U" bend upon itself to provide an overlapped base and leg portion. Ultrasonic energy is applied to the overlapped flattened leg portion for simultaneously sealing and cutting the overlapped leg portion at an oblique angle to the longitudinal axis of the channel material. Upon releasing the channel material, the material is restored to its original shape, but exhibiting a formed corner.

REFERENCES:
patent: 2503882 (1950-04-01), Medford
patent: 2516417 (1950-07-01), Rado
patent: 2794221 (1957-06-01), Bedics
patent: 2886482 (1959-05-01), Huffman
patent: 3562041 (1971-02-01), Robertson
patent: 3679526 (1972-07-01), Horton
patent: 3717955 (1973-02-01), Urbanick
patent: 3802105 (1974-04-01), Bendix
patent: 3822160 (1974-07-01), Barge et al.

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