Sea island type composite fiber and its manufacturing method and application

A technology of composite fibers and manufacturing methods, applied in fiber processing, conjugated synthetic polymer artificial filaments, textiles and papermaking, etc., can solve problems such as difficult disposal or recycling, adverse environmental effects, etc., and achieve easy post-processing and environmental friendliness , Strong effect of transplantation

Active Publication Date: 2006-11-15
SINOPEC YIZHENG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the sea components are dissolved and removed, a large amount of industrial wastewater is formed. Because it contains structural units such as benzene rings, it is difficult to process or recycle industrially.
If the treatment fails to meet the standard and is discharged, it will have a negative impact on the environment

Method used

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  • Sea island type composite fiber and its manufacturing method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 〖Example 1〗Preparation of PLA / PP island-in-the-sea composite fiber and its subsequent superfine products

[0027] As shown in the flow chart in Figure 1, PLA slices are used as the sea component and PP slices are used as the island component. After the moisture content of the slices is less than 300ppm, they are spun on the ABE composite spinning machine, and the sea component slices and the island component slices are heated, extruded, and melted through the respective screw extruder-1 and screw extruder-2 , and then filtered through melt filter-1 and melt filter-2 to become spinnable melt, which enters the sub-box-1 and sub-box-2 respectively, and enters the main spinning box after each metering The two melts are mixed inside the main box, and the tow is sprayed from the spinneret, cooled and formed by side blowing, and then processed through two processes of oiling and winding to obtain the primary fiber, that is, the undrawn filament ( UDY). The main process condi...

Embodiment 2

[0031] 〖Example 2〗Preparation of PLA / PA6 island-in-the-sea composite fiber and its subsequent superfine products

[0032] Use PLA slices as the sea component and PA6 slices as the island component. The weight ratio of the two is 1:1. Dry the two slices separately with drying equipment. The drying temperature is 80-120°C, and the moisture content of the slices is less than 300ppm. Afterwards, on the ABE composite spinning machine, prepare UDY silk with the process similar to that in 〖Example 1〗, the main process conditions are as follows:

[0033]

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main box

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Abstract

The invention provides a sea-island type composite fiber and its production method and application. It uses thermoplastic resins such as PP and PA6 as island components, biodegradable polylactic acid PLA or its copolymers as sea components, and adopts composite spinning method to obtain sea-island composite fibers with regular cross-sectional shape and excellent physical properties. The indicators are excellent. This sea component is biodegradable and can be dissolved by alkali under relatively mild conditions. The composite fiber or its fabric can be treated with alkaline water to produce superfine fiber or fabric. The alkaline treatment process is simple and easy to control, and the product dissolved by alkaline solution is easy to be post-treated, basically pollution-free and environmentally friendly. The technical scheme of the invention can be used to make clothing, high-grade synthetic leather, artificial suede and the like.

Description

technical field [0001] The invention relates to an island-in-the-sea composite fiber, in particular to an island-in-the-sea composite fiber with environmental protection, including the manufacturing method of the fiber and its specific application in the preparation of superfine fibers, belonging to composite spinning and manufacturing The production technology field of microfiber. Background technique [0002] In the industry, fibers with a single filament size less than 0.5 dtex are generally called superfine fibers. Microfiber can be used to manufacture high-grade synthetic leather, artificial suede and other downstream products, and the fabric feels good. At present, there are many ways to produce ultrafine fibers, such as: direct spinning, composite spinning, super-drawn spinning, instantaneous spinning, turbulent spinning, melt-blown spinning, etc. Among them, direct spinning and composite spinning Two methods are most commonly used. There are two main technologies ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/04D01D5/30
Inventor 季平徐银宝钱明球张黎
Owner SINOPEC YIZHENG CHEM FIBER
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