Method of extruding polypropylene

Details Method of extruding polypropylene Method of extruding polypropylene

D - Textiles, Paper

01

D

18/630

D01D 5/12 (2006.01)

Patent

CA 1145909

Title of the Invention METHOD OF EXTRUDING POLYPROPYLENE YARN Abstract A method of extruding multi-filament polypropylene yarn in which the polypropylene is extruded at a tempera- ture below 425°F, such as in the range 415°F to 350°F, particularly about 400°F, into a hot zone having a tempera- ture sufficiently high to retard cooling of the extruded polypropylene yarn. The temperature of the hot zone can be within 60°F of the temperature of extrusion. The yarn is then passed through a quenching zone across which air is blown to cool the yarn. The swell value of the polypropylene can be less than 3 and its melt flow may be greater than 30. The yarn is drawn down in the hot zone and the filaments may be drawn down to an undrawn denier of less than 40.

335965

Affiliated with

Also associated with

Rating

Method of extruding polypropylene 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 of extruding polypropylene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of extruding polypropylene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-201474