Rotary die anvil

Details Rotary die anvil Rotary die anvil

1980-01-07

1981-09-15

Schran, Donald R.

Cutting

Tool or tool with support

Anvil

83347, 83506, B23D 2512, B26D 140

Patent

active

042890551

ABSTRACT:
An improved rotatable anvil is provided. The anvil is of the type useful to cooperate with a rotatable die cylinder in manufacturing paper blanks and the like. The anvil comprises compressible first (inner), hard second (intermediate) and hard third (outer) concentrically disposed and axially extending layers interbonded upon a core thereof. The second and third layers are of different hardnesses. The anvil is made by providing a hollow cylindrical shell, mounting the shell concentrically about the core, injecting a polymerizable fluid between the shell and core assemblage and holding the mounted assemblage for a time sufficient for substantially complete polymerization.

REFERENCES:
patent: 2628681 (1951-02-01), Kane
patent: 2687069 (1951-04-01), Burger et al.
patent: 3664240 (1972-05-01), Helm
patent: 3677122 (1972-07-01), Rautine
patent: 3823633 (1974-07-01), Ross
patent: 3965786 (1976-06-01), D'Luhy
patent: 4073208 (1978-02-01), Kirkpatrick

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