Method for recycling soluble textiles

A textile and solution technology, applied in the fields of environmental protection, textile processing, and fiber processing, can solve the problems of non-dissolving fiber damage, affecting fiber recycling, and slow dissolution of organic solvents

Active Publication Date: 2019-09-10
余燕平 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the organic solvent used in this method has a slow dissolution rate, and ther

Method used

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  • Method for recycling soluble textiles
  • Method for recycling soluble textiles
  • Method for recycling soluble textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] 100% controllable soluble fiber fabrics and the dissolution, recycling and reuse technology of soluble clothing accessories, which include the following process steps, specifically:

[0071] a. In the polyester raw material polymerization process, add the 5-sodium sulfonate-polyethylene glycol isophthalate and the isophthalic acid of 4% in the total weight of the polymer, beating and stirring And heat up to 230°C at the same time; then move to the reactor and add polyethylene glycol with a total polymer weight of 10% to dilute it and cool it down to 210°C; continue to add polyethylene glycol to the reactor, this Part of the polyethylene glycol accounts for 10% of the total weight of the polymer. The polyethylene glycol is added within 50 minutes and stirred at the same time. The temperature is raised to 230°C under normal pressure and the mixed material is polymerized in a vacuum state. The alkali after polymerization is degraded. Finally, the slices are cast, cooled, p...

Embodiment 2

[0079] Dissolution, recovery and reuse technology of controllable soluble fiber and cellulose fiber blended yarn fabric and soluble clothing accessories, which includes the following process steps, specifically:

[0080]a. The controllable soluble fiber staple prepared in Example 1 is blended with cellulose fibers (such as cotton, hemp and rayon), and the blending ratio is 65 / 35, 50 / 50, etc.; Cellulose fiber or blended yarn specifications; weaving according to conventional processes; dyeing with reactive dyes and disperse dyes in two baths of polyester and cellulose fibers; thus, fabrics, including woven and knitted fabrics;

[0081] (1) After the above-mentioned staple fiber blended yarn is plyed and threaded, it can be used as sewing thread for such textiles;

[0082] (2) The above-mentioned garments and textiles are paired with apparel accessories, which are rigid soluble apparel accessories that have undergone conventional injection molding, masterbatch coloring and moldin...

Embodiment 3

[0087] Controllable dissolving, recycling and recycling technology of blended yarn of soluble fiber and cellulose fiber plus spandex fiber fabric and soluble clothing accessories, which includes the following process steps, specifically:

[0088] a. The polymerized raw material prepared in Example 1 is subjected to a conventional spinning process to produce short fibers (3.6cn / dtex strength, 25% elongation at break) with a length of 38mm and a fineness of 1.5D, which will be controllable Soluble fiber short fiber, blended with cellulose fiber (such as cotton, hemp and artificial fiber), the blending ratio is 65 / 35, 50 / 50, etc., the yarn is interwoven with spandex or parallel elastic yarn, according to the conventional weaving process Woven or knitted fabrics; polyester and cellulose fibers are dyed with reactive dyes and disperse dyes in two baths; thus, fabrics, including woven and knitted fabrics, are sewn into finished textiles;

[0089] (1) After the above-mentioned staple...

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Abstract

The invention provides a method for recycling soluble textiles. According to the method, solvents are used for dissolving fabrics containing or made from controllable soluble fibers, dissolution liquid is filtered and recycled, and obtained high-purity terephthalic acid and ethylene glycol are recycled for preparation of the controllable soluble fibers; non-soluble textile fibers are prepared intohigh-quality textile fibers for recycling. The solvents have high dissolution speed and cause small damage to the non-soluble fibers, thereby facilitating high-quality and high-efficiency recycling of the fibers.

Description

technical field [0001] The invention relates to the technical fields of fiber processing, textile processing and environmental protection, in particular to a technology for recycling, regenerating and recycling soluble textiles. Background technique [0002] Countless textiles all over the world become discarded products that cannot be reused or used at a low level, which will cause a huge waste of resources and secondary pollution of the environment. The existing textile fibers do not have technologies and products that can be easily processed and recycled. The important reasons are that the raw material composition, color, and garment accessories of textiles are complex; the fabric structure is tight, the fiber damage is large after opening, and the use value is low. [0003] At present, on the market, only high-value textiles such as pure cashmere and aramid fibers are opened and carded to obtain low-strength and short-length fibers for low-value recycling. [0004] An...

Claims

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Application Information

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IPC IPC(8): D01F6/92C07C51/09C07C63/26C07C29/09C07C31/20
CPCC07C29/095C07C51/09D01F6/92C07C63/26C07C31/202
Inventor 余燕平刘卫国余尔琪刘俊和
Owner 余燕平
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