Ultrafine fiber based on recycled polyester and production method thereof

A technology of ultra-fine fiber and regenerated polyester, applied in the direction of single-component polyester rayon filament, conjugated synthetic polymer rayon filament, etc., which can solve the problem of poor strength of fine denier fibers and inability to use ultra-fine fibers for direct spinning , poor performance of recycled polyester, etc., to achieve the effect of improving product competitiveness, low raw material prices, and low fiber fineness

Inactive Publication Date: 2010-07-28
无锡海丝路纺织新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In recent years, with the emphasis on the recycling of resources, the production of recycled polyester products has been widely valued. However, due to the relatively poor performance of recycled polyester products, when spinning fine denier fibers due to the high content of impurities, spinning During the process, the phenomenon of floating and broken ends is serious, and the strength of the obtained fine denier fibers is poor, so it is difficult to obtain applications in fine denier and ultrafine denier fibers. Therefore, currently recycled polyester is mainly used in hollow fibers, short fibers and some In the production of conventional filament products, it cannot be applied to the direct spinning of superfine fibers

Method used

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  • Ultrafine fiber based on recycled polyester and production method thereof
  • Ultrafine fiber based on recycled polyester and production method thereof

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preparation example Construction

[0029] In the preparation process of the product of the present invention, the raw materials and methods in the fiber material obtained by the two-component spinning machine and the stripping process by the alkali hydrolysis method all belong to the technical content known to those skilled in the art and production personnel, so in the specific examples This part is omitted.

[0030] The two-component spinning machine is not limited in the following examples because although the manufacturers and models of the two-component spinning machines are different, they do not affect the preparation of the ultrafine fibers.

Embodiment 1

[0032] Referring to the accompanying drawings, the present invention is based on ordinary bicomponent fiber production equipment for the production of recycled polyester superfine fiber POY, which is respectively made of recycled polyester beverage bottles that are shredded, dried, and then granulated for granulation. Ester chip A and polycaprolactam chip B are raw materials (the intrinsic viscosity of recycled polyester chip A is 0.695, and the intrinsic viscosity of polycaprolactam chip B is 2.4), and the two raw materials of recycled polyester chip A and polycaprolactam chip B are crystallized and dried After machine 1 is dried, it is extruded and melted by the first extruder 2 and the second extruder 3 respectively, and then sent to the compound spinning box 4, and is precisely metered and extruded by the heat-preserved spinning metering pump, and distributed to each compound spinning box. In the assembly, after extrusion, it is cooled by side blowing to form, the oil nozzl...

Embodiment 2

[0037]Referring to the accompanying drawings, the present invention is based on common two-component fiber production equipment for the production of recycled polyester microfiber POY, which consists of regenerated polyester chips C obtained by cleaning, sorting and shredding recycled polyester beverage bottles. and polycaprolactam chip B as raw materials (the intrinsic viscosity of recycled polyester chip C is 0.736, and the intrinsic viscosity of polycaprolactam chip B is 2.4), and the two raw materials of recycled polyester chip C and polycaprolactam chip B are dried by crystallization dryer 1 Finally, they are extruded and melted by the first extruder 2 and the second extruder 3 respectively, and then sent to the composite spinning box 4, and are precisely metered and extruded by the heat-preserved spinning metering pump, and distributed to each composite spinning assembly. After being extruded, it is cooled by side air blowing and formed, the oil nozzle 5 is oiled, guided ...

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Abstract

The invention discloses a production method of recycled polyester ultrafine fiber based on bi-component fiber production equipment. The method comprises the following steps: taking recycled polyester chips and polycaprolactam chips as raw materials, conveying the two raw materials to a composite spinning box body after respectively crystallizing drying and extrusion melting; extruding by an insulating spinning measuring pump with accurate measurement; distributing the materials to each composite spinning assembly; compounding and forming the two components according to a shape set by a spinning assembly; extruding and cooling by side air blowing for forming; oiling by a nozzle tip; coiling into a recycled polyester ultrafine POY spinning cake by a coiling head; and then carrying out subsequent texturing processing to obtain applicable ultrafine fibers. After the method is adopted, by adjusting the processing technique, the recycled polyester raw materials are applied to high grade fibers, thereby improving effective application of resources, saving cost and having double significances of economy and environmental protection.

Description

technical field [0001] The invention relates to a superfine fiber material and a production method, in particular to a superfine fiber material produced by using a recycled polyester raw material through a melting composite spinning method. Background technique [0002] Microfiber refers to the special fiber with a monofilament fineness below 0.44dtex. Because the fiber is very thin, the fabric feels soft, has a fluffy surface, a plump appearance, and has waterproof, breathable, and moisture-permeable functions. Once the microfiber appeared, it had a great impact on the clothing market, changed people's traditional views on chemical fibers, and provided a new way for the production of new fabrics that combine comfort, functionality, and softness. [0003] There are many kinds of production technologies for ultrafine fibers. In addition to the commonly used direct spinning and composite spinning methods, there are also methods such as super-drawing, instantaneous spinning, tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62D01F6/92D01F8/14D01F8/12
Inventor 严建华高学军朱一顺李茂春
Owner 无锡海丝路纺织新材料有限公司
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