Printing – Embossing or penetrating – Processes
Patent
1990-04-16
1992-05-26
Burr, Edgar S.
Printing
Embossing or penetrating
Processes
101228, 101 25, 101 21, 101 23, B31F 107
Patent
active
051157373
ABSTRACT:
A continuous sheet of metal leaf advanced at a constant rate is moved at variable velocity through a rotary die stamper such that between stamps the metal leaf moves at a velocity which is slower than the velocity of a substrate web; but just prior to stamping the metal leaf is accelerated by contact between the metal leaf and a raised die rotating at the velocity of the substrate web so that when the stamp occurs the metal leaf is traveling at a velocity substantially equal to the velocity of the substrate web. Varying the velocity of the metal leaf has the effect of minimizing the distance the metal leaf travels between stamps which conserves consumption of the metal leaf. Separate means for accelerating the leaf prior to stamping and decelerating the leaf after stamping also may be provided.
REFERENCES:
patent: 2758541 (1956-08-01), Tison
patent: 3606836 (1971-09-01), Colwill
patent: 3648604 (1972-03-01), Warsager
patent: 3861512 (1975-01-01), Coriasco et al.
patent: 4048913 (1977-09-01), Naui
patent: 4063500 (1977-12-01), Abe
patent: 4372206 (1983-02-01), Tison et al.
patent: 4475457 (1984-10-01), Davidson
patent: 4682540 (1987-07-01), Eastman et al.
Bennett Christopher A.
Burr Edgar S.
Hubbard Eric R.
Philip Morris Incorporated
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