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Rotary disc spinning process and apparatus

A technology of spinning device and spinning method, which is applied in dry spinning, textile and papermaking, filament/thread forming, etc., and can solve the problems of low production efficiency, small demand and high price of raw materials in electrospinning process

Inactive Publication Date: 2004-02-04
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their ultra-fine fiber non-woven fabrics and felts are excellent scaffold materials for tissue engineering. They have little demand, many specifications, and high raw material prices. The conventional two-step method and melt-spinning process are costly, and electricity consumption is very high. The production efficiency of the spinning process is too low

Method used

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  • Rotary disc spinning process and apparatus
  • Rotary disc spinning process and apparatus
  • Rotary disc spinning process and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1. 7 g of the random copolymer PLGA of lactide and glycolide (wherein mass composition lactide 80%, glycolide 20%, viscosity-average molecular weight is 55,000) is dissolved in 30mL chloroform, ultrasonic vibration Make it fully dissolved. The solution was transferred to a 50mL syringe with an 18-gauge needle before spinning. The upper surface of the rotating disk of the spinning device is a horizontal plane (see figure 2 a), the diameter is 40mm, the spinning speed is adjustable in the range of 0-12000rpm, and can be displayed. First adjust the rotating speed of the rotating disk to 5000rpm, then manually press the plunger of the syringe to squeeze out the solution and continuously drop it to the center of the rotating disk. The fibrous receiver is a black circular piece of paper with a diameter of approximately 50 cm and a height approximately 10 cm lower than that of the rotating disc, which is stationary. A garden cylinder made of metal with a height ...

Embodiment 2

[0031] Example 2. Dissolve 1.5 g of L-polylactic acid PLLA (viscosity average molecular weight: 153,000) in a mixed solvent of 20 mL of chloroform and 10 mL of acetone, and ultrasonically vibrate to fully dissolve it. The solution was transferred to a 50mL syringe with an 18-gauge needle before spinning. Be used in the same spinning equipment of embodiment 1, the rotating disk is a conical surface rotating disk (see figure 2 b), the diameter of the rotating disk is 40mm, and the rotation speed is 8000rpm. Scanning electron micrographs of the obtained fibers are shown in Figure 4 .

Embodiment 3

[0032] Embodiment 3. spinning solution and spinning equipment are the same as embodiment 1, and the rotating disk is a curved surface rotating disk (see figure 2 c), the diameter of the rotating disk is 40mm, and the rotation speed is 6000rpm. Scanning electron micrographs of the obtained fibers are shown in Figure 5 , the sampling locations of the two pictures are different

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Abstract

A rotating-disk spinning method features that the polymer solution is applied onto high-speed rotating disk at constant speed, under the action of centrifugal force the solution flys toward all around to become high stretched fibres, and after the solvent is evaporated, the non-woven fabric of superfine fibres is collected. Its spinning apparatus is composed of a rotating disk fixed to shaft driven by power mechanism, a container of polymer solution, and a fibre collector. Its advantages are simple technology, low cost, high-strength fine fibres, and high productivity.

Description

technical field [0001] The invention relates to a method for directly preparing a non-woven fabric from a polymer solution, in particular to a method for directly preparing a biodegradable non-woven fabric from a biodegradable polymer solution. [0002] The invention also relates to a spinning device for carrying out the method. Background technique [0003] As a form of fiber material, non-woven fabrics have been used more and more widely. Correspondingly, the technology of preparing non-woven fabrics is also getting more and more advanced. So far, the technology of preparing non-woven fabrics can be roughly divided into the following categories: (1) first make fibers and then prepare non-woven fabrics, spinning and making non-woven fabrics are completed in two steps. Its advantage is that there is no limit to the variety of fibers, it is easy to produce on a large scale, and the specifications and properties of the raw material fibers in the non-woven fabric are fully gu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/04D04H3/02
CPCD01D5/18
Inventor 边新超杨立新景遐斌陈学思徐效义
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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