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Device for producing nonwoven fabric with fused mass and solution centrifugal spinning

A non-woven fabric and centrifugal spinning technology, which is applied in the direction of non-woven fabrics, melt spinning, textiles and papermaking, etc., can solve the problem of complex raw material handling in the electrospinning process, the inability to satisfy cells and blood vessel growth, and the inability to provide three-dimensional space and other problems, to achieve the effect of good mechanical strength, low cost and high production efficiency

Inactive Publication Date: 2008-07-16
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

Due to the special requirements of tissue engineering scaffolds for porosity, pore size and mechanical properties, the pore size provided by electrospun non-woven fabrics is too small to provide a suitable three-dimensional space and cannot meet the needs of cells and blood vessels.
Moreover, the raw material handling of electrospinning process is complicated, and the production efficiency is too low, which greatly limits its application.

Method used

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  • Device for producing nonwoven fabric with fused mass and solution centrifugal spinning
  • Device for producing nonwoven fabric with fused mass and solution centrifugal spinning
  • Device for producing nonwoven fabric with fused mass and solution centrifugal spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The melt and solution centrifugal spinning of the present invention prepare the device of nonwovens as follows:

[0024] As shown in Fig. 1, the device has a rotating disk 1, and the shape of the side surface of the rotating disk 1 is rounded truncated. (See Figure 4). A rotating disk cover 2 is connected to the rotating disk 1, and there is a feed port 3 on the rotating disk cover 2. The rotating disk 1 and the rotating disk cover 2 are fixed by bolts 4, and the rotating disk 1 is divided into an inner cavity 6 and The outer cavity 7, the bottom of the annular spacer 5 has a small hole 21 (see Figure 2), the polymer melt or polymer solution flows out of the small hole 21, and the annular spacer 5 passes through both the rotating disk 1 and the rotating disk cover 2. Extrusion force is fixed, spinnerets 8 are distributed around the rotating disk 1, and the bottom surface of the rotating disk 1 is flat; there is a constant temperature infrared heater 9 under the rotating ...

Embodiment 3   and preparation ，1。( pic 5)。 Embodiment 2

[0028] Example 3 In the device for preparing nonwovens by centrifugal spinning of melt and solution according to the present invention, the shape of the side of the rotating disk 1 is a symmetrical surface of revolution. (See Figure 5). Example 2: Use of the device for the preparation of nonwovens by melt and solution centrifugal spinning

[0029] Melt spinning: 100 g of L-polylactic acid PLLA (viscosity average molecular weight: 100,000) is granulated into particles of about 0.5 cm by a twin-screw extruder. Before spinning, put PLLA particles into the feeder 16, start the main motor 14, adjust the speed of the main motor through the pressure regulating device 15 and keep it at 1500 rpm, and the main motor 14 is fixed by the motor transmission shaft 13 and the rotating disk 12 Make the rotating disk 1 rotate at a uniform speed. At the same time, turn on the power supply of the constant temperature infrared heater 9, and adjust the temperature of the rotating disk 1 to 220°C ...

Embodiment 3

[0031] Example 3: Use of the apparatus for the preparation of nonwovens by melt and solution centrifugal spinning

[0032] Solution spinning: Dissolve 7.5 g of the random copolymer PLGA of lactide and glycolide (wherein the mass composition is 80% lactide, 20% glycolide, viscosity average molecular weight is 160,000) in 100mL chloroform, ultrasonically Shake to fully dissolve. Turn off the constant temperature infrared heater 9 power supply before spinning, and the solution is transferred to the feeder 16. The upper surface of the rotating disk of the spinning device is a horizontal plane (see Figure 1), with a diameter of 50mm, and the speed of the rotating disk is adjusted to 5000 rpm. Open the shutter 18, so that the PLGA solution is delivered to the inner chamber 6 of the rotating disk 1 with a certain flow rate delivery pipe 19, and the PLGA solution flows out to the outer chamber 7 through the small hole passing through the annular partition Silk port 8 ejects fiber. ...

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Abstract

The invention relates to a device of a melt and solution centrifugal spinning preparation of a non-woven fabric which comprises (1) a rotating disk, the side of which is in the shape of an inverted truncated cone or the symmetric rotating surfaces; (2) a cover of the rotating disk; (3) a feed inlet; (4) a bolt; (5) a ring-shaped spacer with holes; (6) an internal cavity of the rotating disk; (7) an external cavity of the rotating disk; (8) a spinning nozzle of the rotating disk; (9) a homothermal infrared heater; (10) a temperature-sensitive probe; (11) a temperature-controlled device; (12) a stationary shaft of the rotating disk; (13) a motor transmission shaft; (14) a main motor; (15)a pressure regulating device; (16)a container; (17)a bracket; (18)a flashboard; (19) a delivery pipe; (20) a fiber receiver; and holes (21) of the ring-shaped spacer (5). The device of the melt and solution centrifugal spinning preparation of the non-woven fabrics provided by the can be used for not only the non-woven fabrics which are made by the melt and solution centrifugal spinning preparation but also the non-woven fabrics which are made by the invention of the device.

Description

technical field [0001] The present invention relates to an apparatus for producing nonwovens by centrifugal spinning of melts and solutions. Background technique [0002] Non-woven fabrics, or non-woven fabrics and non-woven fabrics, are products made of short fibers or filaments arranged in a web or mat, and then reinforced by mechanical, adhesive bonding, hot-melt or chemical methods. Nonwoven fabrics have broken through the traditional textile principles, and have the characteristics of short process flow, fast production speed, high output, low cost, wide application, and multiple sources of raw materials. Natural and chemical fibers and their waste can be widely used as raw materials. [0003] Nonwoven fabric processing is a new process and new technology in the textile industry. The direct formation of papermaking and silk in ancient my country is the embryonic form of modern non-woven fabrics. In 1930, the United States used synthetic resin adhesives to produce non-...

Claims

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Application Information

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IPC IPC(8): D04H3/16D01D5/08D01D5/18
Inventor 章培标陈学思崔立国王宇于婷孙传永
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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