Facility for generating fibers, in particular mineral fibers, fr

Details Facility for generating fibers, in particular mineral fibers, fr Facility for generating fibers, in particular mineral fibers, fr

1989-02-28

1990-10-09

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

Orifice for filaments or fibers

65 5, 65 7, 65 16, C03S 3702

Patent

active

049616951

ABSTRACT:
In an unraveling facility according to the blast drawing process a subsonic diffuser (11) is arranged following the blast pipe (6). The subsonic diffuser (11) is designed as a thrust diffuser with a sudden cross-sectional widening of its flow border in order to form several stages (13, 14, 15). In this way, a larger median expansion angle (.alpha.) can be chosen without risking detrimental detachment of the main flow than is possible with subsonic diffusers having a continuous flow border. Furthermore, the whirls formed under setoff levels prevent the fiber parts from coming into direct contact with the walls, so that a considerably reduced bead content results in combination with the strong flow expansion and ensuing reduction of mutual contact and penetration of fiber parts. The diameter distribution of the fibers is smoothed out, since speed distribution, which exhibits strong border stress when it emerges from the drawing gap (8), is smoothed out quicker due to the energy consumed by the whirls. By systematically introducing additional blasting medium in the area of the subsonic diffuser (11), the flow can be systematically influenced in order to meet all the requirements posed for fiber quality.

REFERENCES:
patent: 3929542 (1975-12-01), Gehrig et al.
patent: 4337074 (1982-06-01), Muschelknautz et al.
patent: 4533376 (1985-02-01), Muschelknautz et al.
patent: 4539029 (1985-09-01), Muschelknautz et al.
patent: 4676815 (1987-06-01), Wagner et al.
patent: 4744810 (1988-05-01), Battigelli et al.

Affiliated with

Also associated with

Rating

Facility for generating fibers, in particular mineral fibers, fr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Facility for generating fibers, in particular mineral fibers, fr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Facility for generating fibers, in particular mineral fibers, fr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-970728