Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Core-sheath conjugate fiber

A composite fiber, core-sheath technology, applied in the direction of conjugated synthetic polymer rayon filament, etc., to achieve the effect of reducing fabric damage, excellent stretchability, and easy wearing

Active Publication Date: 2014-07-02
GUNZE LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The conjugated fibers described in these patent documents 8 to 11 are excellent in stretching elasticity and strength, but when used as raw materials for stretchable fabrics, from There is still room for improvement from the viewpoint of suppression of fabric damage and ease of wearing of stretchable fabrics

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
  • Core-sheath conjugate fiber
  • Core-sheath conjugate fiber
  • Core-sheath conjugate fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0149] Heat and melt thermoplastic polyurethane (Pandex T-1185N produced by DIC Bayer Polymer Co., Ltd., 1 / 2 method melting temperature 214°C) and polyester through a single-screw extruder at a barrel temperature of 170-205°C and 180-220°C, respectively. Elastomer (Pelprene P-55B produced by Toyobo Co., Ltd., melting temperature of 1 / 2 method is 197 ° C), after metering with each gear pump, from the spinneret with 2 composite nozzles heated to 225 ° C, thermoplastic polyurethane The core part and the polyester elastomer as the sheath part are used for composite spinning in a concentric circle.

[0150] At a winding speed of 800m / min, the silicone oil is attached and wound in an unstretched state. After that, heat treatment (60°C, 55%RH in a humid heat environment) for 12 hours is carried out in a separate process, and the The filament fed by the roller at 100m / min passes through the room temperature roller which rotates at almost the same speed (104m / min), then passes through ...

Embodiment I-2～I-10

[0155] The core material, core ratio, sheath material, and sheath ratio were set as described in Table 1. In addition, pantyhose was produced in the same manner as in Example I-1. Sufficient crimping was given to the obtained fiber, and the pantyhose obtained using this fiber passed evaluations other than transparency.

Embodiment II-1

[0211] Heat and melt thermoplastic polyurethane (Pandex T-1190N produced by DIC Bayer Polymer Co., Ltd., surface hardness A92 (JIS K7311)) and polyester elastic through a single-screw extruder at a barrel temperature of 170-205°C and 180-220°C, respectively. Body (Pelprene P-90B produced by Toyobo Co., Ltd., surface hardness D52 (ASTM D2240)), measured by each gear pump, heated to 225°C through a composite nozzle, with thermoplastic polyurethane as the core part, polyester amide ester elastic The body becomes the sheath part and the composite spinning is concentric.

[0212] At a winding speed of 800m / min, the silicone oil was attached and wound in an unstretched state. After that, heat treatment was performed for 12 hours (under a humid heat environment of 60°C and 55%RH) in a separate process, and the The silk supplied by the room temperature roller at 100m / min is contacted and heated by a 90°C hot roller rotating at almost the same speed (104m / min), and a 155°C heating roll...

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
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The present invention provides a conjugate fiber excellent in transparency and stretchability, excellent in longitudinal stretchability and support when made into stretchable fabrics such as pantyhose and stockings, and capable of reducing luster. In addition, the present invention provides a core-sheath composite fiber capable of producing a stretchable fabric that is easy to wear despite its high strength and resistance to damage. A core-sheath composite fiber characterized in that it is a core-sheath composite fiber containing a thermoplastic polyurethane-based elastomer resin (A) in a core portion and a thermoplastic polyester-based elastomer resin (B) in a sheath portion, the core-sheath composite fiber A composite fiber whose strength-elongation curve obtained by a tensile test has a rising elongation of 30 to 100%, and a core-sheath composite fiber characterized in that it contains a thermoplastic polyurethane-based elastomer resin (A) in a core portion . The tensile strength of the thread obtained by unraveling the fabric woven from the core-sheath composite fiber containing thermoplastic polyester elastomer resin or polyamide-type elastomer (B) in the sheath part by a tensile test In the degree curve, the degree of elongation at a load of 1.2 cN is 12% or more and the degree of elongation at a load of 8.0 cN is 120% or less.

Description

technical field [0001] The present invention relates to a core-sheath composite fiber, a manufacturing method thereof, and a stretch fabric containing the fiber. Background technique [0002] Stretchable fibers are used as conventional fibers for pantyhose. As this stretchable fiber, for example, a single core-spun yarn (SCY) in which one or more nylon fibers are entangled in a polyurethane fiber, and a double-core spun yarn (DCY) in which one or more nylon fibers are entangled by changing their twisting directions are mainly used (such as , refer to Patent Documents 1 and 2). Alternatively, a crimped composite fiber having a structure in which stretchable fibers (polyurethane, etc.) and thermoplastic fibers (polyamide, etc.) are continuously bonded in the longitudinal direction of the fiber (for example, refer to Patent Documents 3 to 7 ). Regarding these fibers, a number of fibers improved in accordance with the stretch characteristics and strength of the target fabric...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/16D01F8/14D02J1/22
CPCD01F8/14D01F8/16
Inventor 黑田幸司末藤壮一中井浩一
Owner GUNZE LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com