Reclosable envelope and method of manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 22, 1981
Grant Date -
N/A
app pub date -
Mar 12, 1980
filing date -
Mar 12, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
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