Envelopes – wrappers – and paperboard boxes – Postal cards or packets
Patent
1975-07-21
1978-08-29
Price, William
Envelopes, wrappers, and paperboard boxes
Postal cards or packets
264230, B32B 3126, B29G 2720, B42D 1502
Patent
active
041098510
ABSTRACT:
A novelty postcard and method wherein a thermocontractive plastic plate is initially adhered to a backing sheet in the form of a postcard. The thermocontractive plastic plate is painted or marked with designs, drawings or other indicia. When the card has reached its destination it may be heated in an oven to between 200.degree. and 400.degree. F., whereupon the thermocontractive plastic plate softens and shrinks to a miniature size to form a novelty. During the heating process, the thermocontractive plastic plate separates from the message-carrying backing sheet which remains substantially the same size as it was before heating.
REFERENCES:
patent: 3677399 (1972-07-01), Tatar
patent: 3756399 (1973-09-01), Cosier et al.
Cornaby K. S.
Price William
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