Reclosable envelope and method of manufacture

Details Reclosable envelope and method of manufacture Reclosable envelope and method of manufacture

1980-03-12

1981-09-22

Hall, George T.

Envelopes, wrappers, and paperboard boxes

Envelope

Closures

24208A, B65D 2712, B42F 100

Patent

active

042905478

ABSTRACT:
An envelope is provided with a first and second button having a depending portion inserted through an opening in a flap and an adjacent body portion, respectively, which is then flattened by the application of ultrasonic energy to vibrate each button and its depending portion against an anvil, rendering each button captive on the envelope. A string is inserted through a slot or hole in the depending portion of one of the buttons and fused to the button as the depending portion is flattened. The string is used to releasably connect the buttons and thus, the envelope flap to the adjacent body portion.

REFERENCES:
patent: 2283815 (1942-05-01), Levine
patent: 3023472 (1962-03-01), Ranseen
patent: 3561074 (1968-08-01), Mosher, Jr. et al.

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