Method for direct blow molding

Details Method for direct blow molding Method for direct blow molding

2007-08-21

2007-08-21

Johnson, Christina (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

C425S535000, C425S536000

Reexamination Certificate

active

10918747

ABSTRACT:
A method for direct blow molding including steps of: inserting a blowing jig for blowing air into an inside of a prison; locating the two dies to positions so that the two dies face each other across the parison, wherein two dies have a inner space shape, of which overlapping section with the blowing jig is smaller than the outside diameter of a parison; forming the overlapping section between the parison and the blowing jig, to be smaller than an outside diameter of the parison by using a space between the two dies and the blowing jig when the blowing jig is inserted into an inside of the parison and when the two dies are combined together; and depositing a metal layer to the surface by vapor deposition.

REFERENCES:
patent: 4382769 (1983-05-01), Younkin et al.
patent: 4954071 (1990-09-01), Austin
patent: 2002/0154200 (2002-10-01), Miyazawa et al.

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