Apparatus for non-mechanical die lip temperature adjustment in a

Details Apparatus for non-mechanical die lip temperature adjustment in a Apparatus for non-mechanical die lip temperature adjustment in a

1993-04-13

1995-10-31

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

264 406, 425144, 4253781, B29C 4720

Patent

active

054624231

ABSTRACT:
Apparatus for extruding thermoplastic material includes an extruder having inner and outer die lips adjacent an outlet end of the extruder for transporting an annular stream of thermoplastic material therethrough. The outer die lips are divided into a plurality of circumferential sectors. Each sector includes a passage for circulating heated oil for controlling the viscosity of the thermoplastic material being extruded. The temperature and flow of the heated oil flowing through each sector may be varied according to the required thickness of the product being extruded adjacent that sector. A ring-shaped channel carries the heated oil around the die lips for circulation into the individual sectors.

REFERENCES:
patent: 3491406 (1970-01-01), Davidson
patent: 3775035 (1973-11-01), Scotto et al.
patent: 3840318 (1974-10-01), Solop
patent: 3973890 (1976-08-01), Porter et al.
patent: 3984508 (1976-10-01), Solop
patent: 4057385 (1977-11-01), Yazaki et al.
patent: 4201534 (1980-05-01), Phipps
patent: 4425290 (1984-01-01), Upmeier et al.
patent: 4548570 (1985-10-01), Hahn et al.
patent: 4749531 (1988-06-01), Borger et al.
patent: 4793788 (1988-12-01), Borger et al.
patent: 4882104 (1989-11-01), Dobrowsky
patent: 5116211 (1992-05-01), Shinmoto

Affiliated with

Also associated with

Rating

Apparatus for non-mechanical die lip temperature adjustment in a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for non-mechanical die lip temperature adjustment in a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for non-mechanical die lip temperature adjustment in a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1768587