Postcard with revealable indicia and manufacturing method thereo

Details Postcard with revealable indicia and manufacturing method thereo Postcard with revealable indicia and manufacturing method thereo

1988-07-25

1990-07-03

Watts, Douglas D.

Printed matter

Having revealable concealed information, fraud preventer or...

By removeable material

283101, 229 923, 428 43, B42D 1500, B42D 1502, B65D 2700, G09F 300

Patent

active

049385062

ABSTRACT:
A postcard comprises a postcard material, and a sticking material adhered on the postcard material for covering at least a part of the postcard material. The sticking material comprises a base material formed with a heat adherent resin layer on its main surface, whereon an adhesion retarding layer which reduces the adhesive force of the heat adherent resin layer to weaken adhesiveness to the postcard material is formed. A perforation is formed extending from one edge of the base material to the other edge thereof at a portion where the adhesion retarding layer is formed, and the base material can be cut by the perforation. Accordingly, the sticking material can be easily peeled off from the postcard material, enabling access to various information formed thereon.

REFERENCES:
patent: 2321184 (1943-06-01), Butterworth
patent: 2812957 (1957-11-01), Sarlund
patent: 3400219 (1975-08-01), D'Amato et al.
patent: 3508754 (1970-04-01), Shorim
patent: 3524782 (1970-08-01), Buske
patent: 4204706 (1980-05-01), Blum et al.
patent: 4299637 (1981-11-01), Oberdeck et al.
patent: 4778153 (1988-10-01), Bachman et al.

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