High shrinkage side by side type composite filament and a method for manufactruing the same

a composite filament and high shrinkage technology, applied in the direction of weaving, yarn, transportation and packaging, etc., can solve the problems of difficult synthetic fibers, reduced crimping properties, complicated process, etc., and achieve excellent shrinkage, fine denier filament, and simple process

Inactive Publication Date: 2006-03-09
KOLON IND INC
View PDF3 Cites 46 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] The present invention provides a side-by-side type composite filament which has a excellent shrinkage even in a filament state which is not passed false-twisting process. Additionally, the present in

Problems solved by technology

But, the crimp property is a property which is not easy for synthetic fibers to exhibit and is being considered as an intrinsic property of natural fibers such as wool.
But, the above method was disadvantageous in that, since the appearance of crimps is uneven and the binding force of core yarns and effect yarns is relatively small because it is dependent upon air texturing and the like, one component yarn is released or removed by a physical force applied during a after-process or the crimping property is decreased.
In addition, the above method for manufacturing a different shrinkage composite false twisted yarn was problematic in that it is difficult to provide a fine fineness because two or more kinds of yarns have to be mixed, and the process becomes complicated and the manufacturing cost is increased because the two or more kinds of yarns pre-produced have to be rewound an

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High shrinkage side by side type composite filament and a method for manufactruing the same
  • High shrinkage side by side type composite filament and a method for manufactruing the same
  • High shrinkage side by side type composite filament and a method for manufactruing the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0071] A polyethylene terephthalate with a number average molecular weight (Mn) of 15,000 and a polyethylene terephthalate with a number average molecular weight (Mn) of 25,000 are conjugated-spun in side by side type at a speed of 3,000 m / min at a temperature of 285° C. The resulting material is drawn and heat-treated at a draw speed of 650 m / min and at a drawn ratio of 1.68 in a drawing and heat treatment process as shown in FIG. 2, to prepare a side-by-side type conjugate (composite) filament having 100 deniers / 24 filaments. The drawing and heat-treatment temperature (hot plate temperature) is set to 132° C. so that the composite filament can satisfy the following physical properties.

[0072] Maximum thermal stress per denier: 0.21 g / denier

[0073] Temperature exhibiting maximum thermal stress (Tmax): 155° C.

[0074] Temperature area exhibiting 95% of maximum thermal stress (Tmax, 95%): 122 to 228° C.

[0075] Next, a five-harness satin with a warp density of 190 yarns / inch and a weft...

example 2

[0076] A polyethylene terephthalate with a number average molecular weight (Mn) of 12,000 and a polyethylene terephthalate with a number average molecular weight (Mn) of 25,000 are conjugated-spun in side by side type at a speed of 3,000 m / min at a temperature of 285° C. The resulting material is drawn and heat-treated at a draw speed of 650 m / min and at a drawn ratio of 1.68 in a drawing and heat treatment process as shown in FIG. 2, to prepare a side-by-side type conjugate filament having 100 deniers / 24 filaments. The drawing and heat-treatment temperature (hot plate temperature) is set to 140° C. so that the composite filament can satisfy the following physical properties.

[0077] Maximum thermal stress per denier: 0.31 g / denier

[0078] Temperature exhibiting maximum thermal stress (Tmax): 165° C.

[0079] Temperature area exhibiting 95% of maximum thermal stress (Tmax, 95%): 122 to 228° C.

[0080] Next, a five-harness satin with a warp density of 190 yarns / inch and a weft density of ...

example 3

[0081] A polyethylene terephthalate with a number average molecular weight (Mn) of 16,000 and a polyethylene terephthalate with a number average molecular weight (Mn) of 28,000 are conjugated-spun in side by side type at a temperature of 290° C. The resulting material is drawn and heat-treated in a continuous drawing and baking process as shown in FIG. 1, to prepare a side-by-side type conjugate filament having 100 deniers / 24 filaments. The temperature of a first Godet roller is set to 82° C. and the speed thereof is set to 1,800 m / min. The speed of a second Godet roller is set to 4,815 m / min, the speed of a take-up roller is set to 4,800 m / min, and the temperature of the second Godet roller is set to 163° C., so that the conjugate filament can satisfy the following physical properties.

[0082] Maximum thermal stress per denier: 0.16 g / denier

[0083] Temperature exhibiting maximum thermal stress (Tmax): 175° C.

[0084] Temperature area exhibiting 95% of maximum thermal stress (Tmax, 95...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The present invention relates to a high shrinkage side-by-side type composite filament, wherein two kinds of thermoplastic polymers are arranged side by side type and a boiling water shrinkage (Sr2) measured by the method (initial load=notified denier×1/10 g, static load=notified denier×20/10 g) of clause 5.10 of JIS L 1090 is 20 to 75% of a boiling water shrinkage (Sr1) measured by the method (initial load=notified denier×1/30 g, static load=notified denier×40/30 g) of clause 7.15 of JIS L 1013. The side-by-side type composite filament is made of two kinds of thermoplastic polymers having a number average molecular weight difference (ïMn) of 5,000 to 15,000 upon spinning and the composite filament is drawn and heat-treated so as to satisfy the following physical properties: Temperature area exhibiting 95% of maximum thermal stress (Tmax, 95%): 120 to 230° C. Range of maximum thermal stress per denier: 0.1 to 0.4 g/denier

Description

TECHNICAL FIELD [0001] The present invention relates to a side-by-side type composite (conjugate) filament which has a high elastic property (shrinkage) even in a filament state, and to a method for manufacturing the same. [0002] More particularly, the present invention relates to a side-by-side type composite filament, which can omit a false-twisting process and can attain a fine denier filament since it has a superior crimp even in a filament state where no false-twisting treatment has been carried out, and to a method for manufacturing the same. BACKGROUND ART [0003] Synthetic fibers have reached the level not inferior to natural fibers in some properties owing to repeated technical development in spite of their short history. But, the crimp property is a property which is not easy for synthetic fibers to exhibit and is being considered as an intrinsic property of natural fibers such as wool. [0004] As prior art methods providing synthetic fibers with crimp properties are (i) a m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D01D5/32D01F6/78D01F8/04D01F8/14D03D15/56D03D15/567
CPCY10T428/2913D01F6/78D01F8/04
Inventor YOON, JOON-YOUNGLEE, YOUNG-HWANLEE, SUNG-KWAN
Owner KOLON IND INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap