Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Patent
1999-04-08
2000-11-28
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Forming continuous work followed by cutting
26417212, 26417213, 26417214, 26417215, 26417217, 26417218, 2641721, B29D 3100, D01D 5253, D01D 804, D01D 812, D01D 524
Patent
active
061531383
ABSTRACT:
Bicomponent fibers of different cross-sections may be formed without changing the geometry of the spinneret orifices. More specifically, at least two polymers are co-melt-spun through an orifice of fixed geometry so as to achieve a bicomponent fiber having a desired cross-section. In order to change to a bicomponent fiber having a cross-section which is different, therefore, at least one of (1) the differential relative viscosity, (2) the relative proportions of the first and/or second polymers, and (3) the cross-sectional bicomponent distribution of the first and second polymers, is changed. In such a manner, therefore, a wide variety of bicomponent fibers having different cross-sectional geometries may be produced without changing the fixed geometry orifice through which the polymers are co-melt-spun. Thus, bicomponent fiber cross-sections may be "engineered" to suit a variety of needs without necessarily shutting down production equipment in order to change spinnerets. The bicomponent fibers are most preferably multilobal (e.g., trilobal) in which the core component is generally triangularly shaped.
REFERENCES:
patent: 3671379 (1972-06-01), Evans et al.
patent: 3718534 (1973-02-01), Okamoto et al.
patent: 3726955 (1973-04-01), Hughes et al.
patent: 3729449 (1973-04-01), Kimura et al.
patent: 4069363 (1978-01-01), Segraves et al.
patent: 4439487 (1984-03-01), Jennings
patent: 4713291 (1987-12-01), Sasaki et al.
patent: 4732809 (1988-03-01), Harris et al.
patent: 4861661 (1989-08-01), Samuelson
patent: 5125818 (1992-06-01), Yeh
patent: 5162074 (1992-11-01), Hills
patent: 5202185 (1993-04-01), Samuelson
patent: 5208107 (1993-05-01), Yeh et al.
patent: 5244614 (1993-09-01), Hagen
patent: 5322736 (1994-06-01), Boyle et al.
patent: 5344297 (1994-09-01), Hills
patent: 5445884 (1995-08-01), Hoyt et al.
patent: 5458972 (1995-10-01), Hagen
patent: 5620641 (1997-04-01), Berger
Introduction to Physical Polymer Science, L. H. Sperberg, 1986, John Wiley & Love, Inc.
Helms, Jr. Charles F.
Hodan John A.
Hoyt Matthew B.
Ilg Otto M.
Kent Diane R.
BASF Corporation
Tentoni Leo B.
LandOfFree
Process for modifying synthetic bicomponent fiber cross-sections 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 modifying synthetic bicomponent fiber cross-sections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for modifying synthetic bicomponent fiber cross-sections will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1721809