Removal of injection-molded tie from mold by retracting core fro

Details Removal of injection-molded tie from mold by retracting core fro Removal of injection-molded tie from mold by retracting core fro

1996-01-08

1998-05-05

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

24 17AP, 249 63, 264334, 425556, 425438, 425DIG58, B65D 6300, B29C 4544

Patent

active

057469652

ABSTRACT:
In a method of injection molding a tie that includes an abutment wall surface having at least one tooth inside a locking head facing a pawl, a retractable core that defines at least a portion of the abutment surface that includes the at least one abutment surface tooth is retracted so that the tie can be removed from the mold without significantly damaging the at least one abutment surface tooth. The core is disposed for retraction in a direction inclined toward the pawl at an acute angle away from the direction of insertion of the tongue of the tie into the locking head.

REFERENCES:
patent: 3660869 (1972-05-01), Caveney et al.
patent: 3924299 (1975-12-01), McCormick
patent: 4383670 (1983-05-01), Olschewski et al.
patent: 4473524 (1984-09-01), Paradis
patent: 4476913 (1984-10-01), Leuner et al.
patent: 4880047 (1989-11-01), VanRens
patent: 4986942 (1991-01-01), Irgens et al.
patent: 5146654 (1992-09-01), Caveney et al.
patent: 5389330 (1995-02-01), Sorensen et al.

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