Apparatus for making an air bag cover having a hidden tear seam

Details Apparatus for making an air bag cover having a hidden tear seam Apparatus for making an air bag cover having a hidden tear seam

1996-04-29

1998-07-07

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

Mold having movable core or movable pin

264163, 264293, 264296, 2643287, 425468, 425DIG37, 425DIG119, B29C 4517

Patent

active

057765227

ABSTRACT:
A method and apparatus for making a thermoplastic air bag cover having a hidden tear seam. A molten thermoplastic is injected into a mold cavity of a mold having a shape defining the air bag cover. An insert having a shape defining the tear seam is extended into the mold cavity before the molten plastic completely solidifies. The resulting air bag cover is cooled to a temperature beneath the softening point of the plastic. The completed air bag cover is then removed from the mold. The thickness of the air bag cover at the tear seam is within a range of 0.2 to 0.4 millimeters.

REFERENCES:
patent: 4184835 (1980-01-01), Talbot
patent: 4820149 (1989-04-01), Hatakeyama et al.
patent: 5149479 (1992-09-01), Nakajima
patent: 5183615 (1993-02-01), Zushi
patent: 5320380 (1994-06-01), Hamada et al.
patent: 5335935 (1994-08-01), Proos et al.

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