Process for the manufacture of short fibrils

Details Process for the manufacture of short fibrils Process for the manufacture of short fibrils

1975-01-16

1977-03-01

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

162157R, 264140, 264205, D01D 504

Patent

active

040102297

ABSTRACT:
A process is provided for the manufacture of fibrils of short length by suddenly releasing the pressure acting on a two-phase liquid mixture of molten polymer and solvent and which is at a high pressure and a high temperature. The two-phase liquid mixture is ejected through a pressure release orifice so as to vaporize the solvent instantaneously and solidify the polymer, and the flow path of the two-phase liquid mixture is perturbed at the instant when it enters the pressure release orifice.
Spinnerets are provided which have a perturbation chamber containing a supply orifice and a pressure release orifice.

REFERENCES:
patent: 2728753 (1955-12-01), Russum et al.
patent: 3227794 (1966-01-01), Anderson et al.
patent: 3386488 (1968-06-01), Ratzsch et al.
patent: 3461193 (1969-08-01), Gilardi
patent: 3549732 (1970-12-01), Rice
patent: 3663668 (1972-05-01), Fairbanks
patent: 3706827 (1972-12-01), Nott et al.
patent: 3756441 (1973-09-01), Anderson et al.
patent: 3883630 (1975-05-01), Raganato
patent: 3885014 (1975-05-01), Fukada et al.
patent: 3902957 (1975-09-01), Koslowski

Affiliated with

Also associated with

Rating

Process for the manufacture of short fibrils 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 the manufacture of short fibrils, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of short fibrils will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1352823