Precision slitting of material

Details Precision slitting of material Precision slitting of material

1984-01-30

1985-12-31

Yost, Frank T.

Severing by tearing or breaking

Methods

With preliminary weakening

83 51, 225 3, 225 96, 225 99, B26D 727, B26D 900, B26F 300

Patent

active

045615799

ABSTRACT:
An apparatus and method for slitting an endless strip of material having substantially planar surfaces by forming a pair of adjacent grooves in each surface of the material with corresponding grooves in each surface of the material being orthogonally aligned and applying a force normal to the planar surfaces of the material and between adjacent grooves and of sufficient magnitude to shear the material along a line connecting corresponding grooves. For this purpose a pair of scoring knives for each slit are mounted in relative orthogonal alignment with respect to the planar surfaces of the material with one on each side of the material. The knives form the adjacent grooves in each surface of the material.

REFERENCES:
patent: 3176378 (1965-04-01), Janiszewski
patent: 3416347 (1968-12-01), Walsh et al.
patent: 3628710 (1971-12-01), Mannheim et al.
patent: 4220272 (1980-09-01), Danti
patent: 4362078 (1982-12-01), Ohnishi et al.

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