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Production method of pre-spinning colored high-shrinkage polyester FDYs (Fully Drawn Yarns)

A pre-spinning coloring and production method technology, applied in the field of fiber manufacturing, can solve the problems of slow crystallization speed, interrupted spinning of sliced ​​particles, low production efficiency, etc., and achieve the effect of strong three-dimensional feeling and soft hand feeling

Inactive Publication Date: 2017-02-15
CHANGZHOU XINZHANJIANG SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the chemical modification process, since the melting point of PET high-shrinkage chips is nearly 20°C lower than that of conventional PET chips (the melting point of PET high-shrinkage chips is about 235-240°C), the crystallization speed is slow, the process temperature is difficult to control, and the sliced ​​particles are easily Spinning is interrupted due to sticking and agglomeration, and the production efficiency is very, very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A production method of pre-spinning colored polyester high-shrinkage FDY yarn, which uses chemically modified PET high-shrinkage chips and coloring masterbatches as raw materials to prepare pre-spinning colored polyester high-shrinkage FDY yarn. The specific steps are: chemically modified PET The high-shrinkage chips are pulsed to the pre-crystallization tower for pre-crystallization, and then the chemically modified PET high-shrinkage chips and coloring masterbatch are placed in a drying kettle for drying. The drying temperature is 158 ° C, and the primary / secondary regeneration temperature is 150 ℃, the chemically modified PET high-shrinkage chips and coloring masterbatch are measured by volume and mixed evenly, extruded by a screw extruder, and then pre-filtered. The pressure of the filter is 9.0Mpa. 60 mesh / g metal filter sand, the component pressure is 12.0Mpa, after metering-spinning-cooling-oiling-spinning tunnel-pre-networking-drawing roller-setting roller-main n...

Embodiment 2

[0026]A production method of pre-spinning colored polyester high-shrinkage FDY yarn, which uses chemically modified PET high-shrinkage chips and coloring masterbatches as raw materials to prepare pre-spinning colored polyester high-shrinkage FDY yarn. The specific steps are: chemically modified PET The high-shrinkage chips are pulsed to the pre-crystallization tower for pre-crystallization, and then the chemically modified PET high-shrinkage chips and coloring masterbatch are placed in a drying kettle for drying. The drying temperature is 163 ° C, and the primary / secondary regeneration temperature is 155 ℃, the chemically modified PET high-shrinkage chips and coloring masterbatch are measured by volume and mixed evenly, extruded by a screw extruder, and then pre-filtered. The pressure of the filter is 12.0Mpa. 80 mesh / g metal filter sand, the component pressure is 22.0Mpa, after metering-spinning-cooling-oiling-spinning tunnel-pre-networking-stretching roller-setting roller-mai...

Embodiment 3

[0033] A production method of pre-spinning colored polyester high-shrinkage FDY yarn, which uses chemically modified PET high-shrinkage chips and coloring masterbatches as raw materials to prepare pre-spinning colored polyester high-shrinkage FDY yarn. The specific steps are: chemically modified PET The high-shrinkage chips are pulsed to the pre-crystallization tower for pre-crystallization, and then the chemically modified PET high-shrinkage chips and coloring masterbatch are placed in a drying kettle for drying. The drying temperature is 153 ° C, and the primary / secondary regeneration temperature is 145 ℃, the chemically modified PET high-shrinkage chips and coloring masterbatch are measured by volume and mixed evenly, extruded by a screw extruder, and then pre-filtered. The pressure of the filter is 10.5Mpa. 70 mesh / g metal filter sand, the component pressure is 17.0Mpa, after metering-spinning-cooling-oiling-spinning tunnel-pre-networking-stretching roller-setting roller-ma...

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Abstract

The invention relates to the technical field of the manufacture of fibers, in particular to a production method of pre-spinning colored high-shrinkage polyester FDY (Fully Drawn Yarns). Chemically modified high-shrinkage PET sections and coloring master batches are taken as raw materials to prepare the pre-spinning colored high-shrinkage polyester FDY, wherein the chemically modified high-shrinkage PET sections are obtained by adding m-phthalic acid in a PET copolymerization process. The high-shrinkage polyester FDYs disclosed by the invention are differentiated polyester filament yarn products which are developed based on taking the chemically modified high-shrinkage PET sections as raw materials, and the boiling water shrinkage is higher than 30%.

Description

technical field [0001] The invention relates to the field of fiber manufacturing, in particular to a production method of colored polyester high-shrinkage FDY yarn before spinning. Background technique [0002] Polyester ultra-high shrinkage yarn is a differentiated polyester filament product developed from chemically modified high-shrinkage chips, and its boiling water shrinkage rate is greater than 30%. In the early stage of development, high-shrinkage polyester fiber was mainly used to make the base fabric of artificial leather. At present, it is mainly used to produce fabrics such as bulky thick textiles and clothing materials. High-shrinkage polyester fibers can shrink sharply under heat conditions to form bulky yarns or fabrics with concave-convex patterns. [0003] The methods of producing high-shrinkage polyester fibers include two methods: physical modification and chemical modification. Physical modification is currently used by many manufacturers, that is, conven...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/04C08G63/183C08G63/181C08G63/78D01D5/08D01D5/16D01D5/088D01D5/096D01D10/02D01D1/10
CPCD01F6/92C08G63/181C08G63/183C08G63/78D01D1/106D01D5/08D01D5/088D01D5/096D01D5/16D01D10/02D01F1/04
Inventor 李众顾建华
Owner CHANGZHOU XINZHANJIANG SPECIAL FIBER
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