Vacuum forming apparatus and vacuum forming method

Details Vacuum forming apparatus and vacuum forming method Vacuum forming apparatus and vacuum forming method

2008-07-18

2010-11-30

Del Sole, Joseph S (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

C264S322000, C264S046800, C425S112000, C425S386000

Reexamination Certificate

active

07842224

ABSTRACT:
A vacuum forming apparatus has a forming die, a plurality of holding devices, a pressing device and a pair of supplemental holding devices. The forming die has at least one suction hole for creating a vacuum. The holding devices hold a resin sheet that has been softened by heating. The pressing device moves relative to the forming die to close a space therebetween and form an airtight state therebetween. Each of the supplemental holding devices includes a clamp member and a support member. The supplemental holding devices are movably arranged to move toward each other. The clamp members clamp the resin sheet on two sides of a selected sag area where the resin sheet will be made to sag. The support members extend along two side portions of the selected sag area for supporting a bottom surface of the resin sheet where the resin sheet will be made to sag.

REFERENCES:
patent: 3146143 (1964-08-01), Bolesky et al.
patent: 3600746 (1971-08-01), Kostur et al.
patent: 4666544 (1987-05-01), Whiteside et al.
patent: 4944668 (1990-07-01), Asano et al.
patent: 5578158 (1996-11-01), Gutowski et al.
patent: 2001/0022413 (2001-09-01), Oono et al.
patent: 2 647 051 (1990-11-01), None
patent: H08-132518 (1996-05-01), None
patent: 10076570 (1998-03-01), None
patent: 2001-138389 (2001-05-01), None
JPO English machine translation of JP 2001-138389.

Affiliated with

Also associated with

Rating

Vacuum forming apparatus and vacuum forming 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 Vacuum forming apparatus and vacuum forming method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum forming apparatus and vacuum forming method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4200503