Ultrasonic paper welding

Details Ultrasonic paper welding Ultrasonic paper welding

1977-06-06

1979-04-17

McGehee, Travis S.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156 731, 156227, 156253, 156477B, B42C 1900, B29C 2708, B32B 3116

Patent

active

041492889

ABSTRACT:
This invention provides a method and aparatus for welding together paper sheets, more especially for, but not limited to, bookbinding. The sheets are held in a desired relation with one another, and the portions to be connected are held together while subject to ultrasonic vibration which fuses ingredients of the paper so as to weld the fused areas together. A folded sheet can be welded across a midportion thereof and then folded along the weld or parallel to the weld to make a signature for a book; or stacked sheets can be bound together along their rearward edge portions by the ultrasonic vibrations.

REFERENCES:
patent: 3560290 (1971-02-01), Sendor et al.
patent: 3627602 (1971-12-01), Van Dijk
patent: 3733238 (1973-05-01), Long et al.
patent: 4041883 (1977-08-01), Meratti

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