Apparatus for constant pressure in line-web crush-scoring

Details Apparatus for constant pressure in line-web crush-scoring Apparatus for constant pressure in line-web crush-scoring

1985-09-17

1987-07-07

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

With cutting, breaking, tearing, or abrading

And with bending

83506, 83881, 493 60, 493161, 493370, 493403, 493471, B05B 114

Patent

active

046784578

ABSTRACT:
There is provided an apparatus for applying constant pressure to a knife blade for crush-scoring, wherein the knife blade is supported in a substantially frictionless manner and the constant pressure is supplied by a flexible diaphragm acting on a plunger which can move substantially without friction in a pneumatic cylinder.

REFERENCES:
patent: 2360653 (1944-10-01), Davidson
patent: 3332326 (1967-07-01), Haas
patent: 4257298 (1981-03-01), Agkut
patent: 4406648 (1983-09-01), Cavagna et al.

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