Cap for a paper core

Details Cap for a paper core Cap for a paper core

1981-03-06

1983-10-04

Gilden, Leon

Receptacles

Closures

Removable closure retained by adhesive or fusion means

72348, 220353, 229 55, F24M 300

Patent

active

044074280

ABSTRACT:
Apparatus and process for cold drawing a disk into a cap for a paper core. The process comprises cold drawing a disk to form a cylindrical cup having a rim and a socket, removing the central portion of the cup leaving a flange, straightening the flange and trimming the rim. The resultant cap is characterized by having a uniform-sized rim of a width equal to the width of the socket. The apparatus comprises a press having a fixed portion and a movable portion, a cylindrical member mounted on the fixed portion, a ram and a number of opposed cylinders carried by the movable portion, and means for moving the movable portion toward the fixed portion.

REFERENCES:
patent: 1432252 (1922-10-01), Leicht
patent: 3611552 (1971-10-01), Cushing et al.

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