Blow molding method

Details Blow molding method Blow molding method

1996-05-23

1998-09-08

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264516, 425503, B29C 4920

Patent

active

058041273

ABSTRACT:
A laminating blow molding method for making a hollow article includes the steps of forming 1 to 500 fine, holes per an area of 100 cm.sup.2 in a resin sheet by punching to thereby form projections as burrs on one side of the resin sheet, the diameter of the holes being between 0.1 mm and 1 mm; disposing the resin sheet between an outer surface of a parison extruded from a die and a mold so that the one side with the projections faces a cavity face of the mold; closing the mold so that the resin sheet is held between the cavity face of the mold and the outer surface of the parison; and heating the mold to a temperature exceeding a softening temperature of the resin sheet and simultaneously blowing the parison to perform blow molding. Thereafter, the mold is cooled and a molded article is taken out. In the method, the molded article with smooth outer surface can be obtained.

REFERENCES:
patent: 5207969 (1993-05-01), Shirahata
patent: 5232653 (1993-08-01), Addeo et al.

Affiliated with

Also associated with

Rating

Blow molding method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Blow molding method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blow molding method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1279218