Method for shaping workpieces from thermoplastics

Details Method for shaping workpieces from thermoplastics Method for shaping workpieces from thermoplastics

1991-05-22

1992-09-29

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264322, 264325, 425DIG14, B29C 4302

Patent

active

051512416

ABSTRACT:
A method and device for shaping tubular workpieces from thermoplastic placs is disclosed. In the method, the workpiece to be shaped is inserted into a mold, heat is applied from the interior of the workpiece to heat the workpiece to the softening temperature of the plastic, this temperature is maintained until the workpiece assumes the shape of the mold, and the workpiece is left in the mold until it has cooled off. A flexible heating core is used to apply heat to the interior of the workpiece. The heating core has an insulating jacket with a sliding layer on its outer wall and a heating conductor winding located within the insulating jacket. A stress relief extends lengthwise in the middle of the heating core and outward of the heating core at one end. A receptacle is provided at the other end of the heating core for the stress relief.

REFERENCES:
patent: 3833699 (1974-09-01), Stefanka
patent: 4126659 (1978-11-01), Blad
patent: 4144632 (1979-03-01), Stronpe
patent: 4876049 (1989-10-01), Aoyama et al.

Affiliated with

Also associated with

Rating

Method for shaping workpieces from thermoplastics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for shaping workpieces from thermoplastics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for shaping workpieces from thermoplastics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1966773