Supercharge Your Innovation With Domain-Expert AI Agents!

Composite spinneret plate for solvent method cellulose fiber production

A technology of cellulose fiber and composite spinning, which is applied in the direction of spinneret assemblies, textiles and papermaking, etc. It can solve the problems of complex structure, easy to cause eddy current, and difficult operation of the annular cooling device, and achieve simple structure and high spinning efficiency. The effect of speed and simple production process

Active Publication Date: 2007-04-18
DONGHUA UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned spinneret needs to be matched with an annular blowing device during spinning to carry out spinning.
However, the annular cooling device has a complex structure, difficult operation, and is easy to cause eddy currents, resulting in messy threads

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
  • Composite spinneret plate for solvent method cellulose fiber production
  • Composite spinneret plate for solvent method cellulose fiber production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The pulp with a degree of polymerization (DP) of 600 is dissolved in NMMO aqueous solution, the cellulose content is 10%, the refractive index of the prepared cellulose spinning solution is 1.4860, the viscosity is 1000 Pa·s, and it is light brown and transparent. After being pressurized by the booster pump, it is filtered by the pre-filter and then enters the melt-spinning box.

[0036] The composite spinneret is inlaid with 6 spinneret caps, and each spinneret has 400 spinneret holes with a diameter of Φ=0.07mm. The total number of holes in the composite spinneret is 2400. During spinning, the temperature of the spinning liquid is 90°C, and the side blowing with a wind speed of 4m / min is used for cooling, 10% NMMO aqueous solution is used as a coagulant, the temperature of the coagulation bath is 20°C, and the winding speed is 120m / min. After washing, crimping, cutting, spraying, and drying, the strips obtained high-quality cellulose fibers with a fineness of 1.47 dte...

Embodiment 2

[0038]The pulp with a degree of polymerization (DP) of 700 was dissolved in an NMMO aqueous solution with a cellulose content of 9%. The resulting cellulose spinning solution had a refractive index of 1.4850 and a viscosity of 1200 Pa·s, which was light brown and transparent. After being pressurized by the booster pump, it is filtered by the pre-filter and then enters the melt-spinning box.

[0039] The composite spinneret is inlaid with 6 spinneret caps, and each spinneret has 600 spinneret holes with a diameter of Φ=0.07mm. The total number of holes in the composite spinneret is 3600. During spinning, the temperature of the spinning solution is 92°C, the wind speed is 4.5m / min for cooling, the 10% NMMO aqueous solution is used as the coagulant, the temperature of the coagulation bath is 20°C, and the winding speed is 130m / min. After the filaments are washed, crimped, cut, sprayed, and dried, a high-quality cellulose fiber with a fineness of 1.30 dtex, a single fiber dry stre...

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
diameteraaaaaaaaaa
compressive strengthaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a complex spinneret for fibrin fiber spinning by solvent method. It contains a melt-spun spinneret without spinning pore. Some supporting pores are distributed uniformly and are parallel along radial on the middle of melt-spun spinneret. Each spinning pore is embedded a wet-spun spinning cap. Diameter of melt-spun spinneret is 200-400mm. Amount of wet-spun spinning cap is 6-20 and its external diameter is 10-30mm. There are 100-600 spinning pores at the bottom of cap, their diameters are 0.03-0.08mm. It can apply side-blown wind cooling, which not only has simple device, uniform cooling and high efficiency, but also can increase spinning speed. It is a special spinneret for producing solvent method fibrin fiber spinning by using side-blown wind.

Description

technical field [0001] The invention belongs to the field of chemical fiber manufacture, and relates to a spinneret, a special component for spinning, in particular to a composite spinneret used in the spinning process of solvent-processed cellulose fibers. Background technique [0002] The polymer is processed into a fluid fluid (that is, a molten melt or a dissolved solution), which is extruded through a small hole to form a thin stream, and the fluid is squeezed into a part with a small hole, and is solidified. The process of forming fibers is called spinning. The part used is the indispensable part in the chemical fiber spinning process - the spinneret. [0003] Due to the nature of the polymers and their fiber types, different spinning methods must be used. Generally, there are many methods such as melt spinning, wet spinning and dry-wet spinning. For example, materials such as polyester are produced by melt spinning, which is produced at a te...

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 Applications(China)
IPC IPC(8): D01D4/02
Inventor 胡学超邵惠丽章潭莉张慧慧
Owner DONGHUA UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com