Process for obtaining pet yarns with an improved production effi

Details Process for obtaining pet yarns with an improved production effi Process for obtaining pet yarns with an improved production effi

1990-12-13

1993-05-04

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

264211, 26421114, D01D 5088, D01F 662

Patent

active

052079597

ABSTRACT:
Process for improving the production efficiency of the spinning of an undrawn, preoriented yarn based on polyethylene terephthalate (PET) by the introduction, before the spinning, of 0.03 to 0.1% by weight of fumed silica with a particle size of between 5 and 15 nm into the molten polymer in the form of dispersion in a masterbatch of the same polymer as that to be processed, then spinning the PET containing the silica in the finely dispersed state, the filaments being next cooled by means of a gas stream at temperature between 17.degree. to 22.degree. C. and then sized and wound at a velocity of between 3500 and 5000 m/min.
The gain in production efficiency, evaluated in relation to the shrinkage of the filaments in dry air at 180.degree. C., is at least 7%, generally at least 10-15%.

REFERENCES:
patent: 4547546 (1985-10-01), Wells
Abstract of Japanese Reference 60-246,813 (Published Dec. 1985).

Affiliated with

Also associated with

Rating

Process for obtaining pet yarns with an improved production effi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for obtaining pet yarns with an improved production effi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for obtaining pet yarns with an improved production effi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1973300