Method for producing melt direct spinning superfine (4.6-5.5) denier high elastic modulus polyurethane fibers

A technology of spandex fiber and ultra-fine denier, which is applied in fiber treatment, fiber chemical characteristics, textiles and papermaking, etc., to achieve high water absorption, strong cleaning function, and low bending stiffness

Inactive Publication Date: 2011-04-20
TAICANG JINXIANG SPANDEX FIBER
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the specifications of spandex fibers on the market include ultra-fine denier series (above 5D and below 20D) and conventional s

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
  • Method for producing melt direct spinning superfine (4.6-5.5) denier high elastic modulus polyurethane fibers
  • Method for producing melt direct spinning superfine (4.6-5.5) denier high elastic modulus polyurethane fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Take 75 kg of polyester polyol, 20 kg of isocyanate, and 5 kg of butanediol;

[0018] 2. Negative pressure feeding, vacuumize to negative 0.8MPa pressure, feed polyester polyol raw material into the first purification tank through the first feeding valve installed on the first purification tank, temperature 105°C, heat for 45 minutes for purification The raw material butanediol is added into the second purification tank through the second feeding valve arranged on the second purification tank, and the temperature is 108 ° C, and it is purified by heating for 54 minutes; the isocyanate is passed through the third feeding valve arranged on the third purification tank Add to the third purification tank, temperature 112°C, heat for 55 minutes for purification;

[0019] 3. Add 0.8MPa nitrogen pressure, pass the raw material in the first purification tank through the first metering delivery pump, the raw material in the second purification tank through the second met...

Embodiment 2

[0026] 1. Take 62 kg of polyester polyol, 30 kg of isocyanate, and 8 kg of butanediol;

[0027] 2. Feed under negative pressure, evacuate to negative 0.8MPa pressure, add polyester polyol raw material into the first purification tank through the first feed valve installed on the first purification tank, heat at 103°C for 45 minutes for purification The raw material butanediol is added into the second purification tank through the second feeding valve arranged on the second purification tank, and the temperature is 106 ° C, and it is purified by heating for 45 minutes; the isocyanate is passed through the third feeding valve arranged on the third purification tank Add to the third purification tank, temperature 110°C, heat for 50 minutes for purification;

[0028] 3. Add 0.8MPa nitrogen pressure, pass the raw material in the first purification tank through the first metering delivery pump, the raw material in the second purification tank through the second metering deliver...

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

No PUM Login to view more

Abstract

The invention provides a method for producing melt direct spinning superfine (4.6-5.5) denier high elastic modulus polyurethane fibers, which is characterized by comprising the following steps: raw materials, charging under negative pressure, addition of 0.8MPa nitrogen pressure, high-temperature spontaneous reaction in two static reactors in turn, a double-screw extruder, filtration in a melt filter, jetted yarn cooling in an air duct, oiling by an oiling machine, curing in a drying room and detecting and casing. The method has the following advantages: the superfine denier polyurethane fibers have low bending stiffness and quite soft feel; the surface areas of the fibers are large, thus obviously improving the coverage, bulkiness and heat retention of the fabrics and having extremely strong cleaning function; the superfine fibers are made into superhigh density fabrics and the size of the gaps between the fibers range from the diameter of the water drops to the diameter of the vapor droplets, thus having waterproof and non-airproof effects; and the superfine fibers are processed into such fabrics which can be moistened by water as towels and the towels have high water absorbability and can rapidly absorb the moisture of the washed hairs to rapidly dry the hairs. The method can be applied in various fields.

Description

technical field [0001] The invention relates to a method for melting and direct spinning superfine spandex fibers with a denier of 4.6-5.5 denier and high elastic modulus, belonging to the technical field of spandex fiber production. Background technique [0002] Spandex scientific name <polyutethane>Fiber is a highly elastic synthetic fiber developed in recent years, also known as: Spenders <spandex>Fiber, PTMG accounts for 80% (mass molecule) of the final polymer, known as the "second skin" of people. It is highly elastic and can be stretched 6-7 times, but it can quickly return to its original state as the tension disappears. Its molecular structure is a chain-like, soft and extensible polyurethane. Hard segments link together to enhance its properties. At present, it is widely used at home and abroad: chemical spinning, wet spinning and dry spinning. The above three spinning methods will cause environmental pollution in production, complex process, large e...

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): D01F6/78D01D5/092D01D5/096D01D1/06C08G18/42
Inventor 杨福兴杨建平杨惠彪
Owner TAICANG JINXIANG SPANDEX FIBER
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