Method for manufacturing pre-inked stamps

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Deforming the surface only

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264321, B29D 2700

Patent

active

040002438

ABSTRACT:
A method for manufacturing pre-inked stamps in which a compact cabinet containing a cold press and a hot plate with means for insuring the safe usage of both the cold press and hot plate is used. Porous thermoplastic material is compressed without heat against a die; thereafter, heat is applied to the porous material, causing it to shrink and retain a memory of the die impressions.

REFERENCES:
patent: 2914109 (1959-11-01), Hsu
patent: 2946713 (1960-07-01), Dusina
patent: 3818085 (1974-06-01), Marsland
patent: 3844876 (1974-10-01), Wilson et al.

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