Process and equipment for preparing pure chitosan fiber filament non-woven fabric based on wet spinning technology

A technology of chitosan fiber and wet spinning, which is applied in the production of complete sets of equipment for artificial threads, wet spinning, fiber chemical characteristics, etc., can solve the problems of high cost and low strength, and achieve the goal of overcoming poor firmness and firmness. Good, simple preparation process

Active Publication Date: 2018-08-21
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is an important material for facial masks, but it is difficult for existing facial masks or medical dressings to use chitosan fibers to prepare non-woven fabrics, because the unique structure of chitosan fibers causes their strength to be very low. Masks or medical dressings need to be increased in thickness. Compared with the effect, although chitosan fibers can be used entirely, the cost is high and the gain outweighs the gains. The current trend of facial masks is to require thin, permeable, and strong water absorption. As chitosan fibers The current method of sugar mask is to mix other fibers to increase strength and then spunlace reinforcement. Under the thinner mechanism, it can achieve a certain antibacterial and moisture absorption effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Process and equipment for preparing pure chitosan fiber filament non-woven fabric based on wet spinning technology
  • Process and equipment for preparing pure chitosan fiber filament non-woven fabric based on wet spinning technology
  • Process and equipment for preparing pure chitosan fiber filament non-woven fabric based on wet spinning technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 2 , 3 , 4, 5, and 6, a kind of equipment for preparing pure chitosan fiber filament non-woven fabric based on wet spinning technology is composed of wet spinning device 1 and forming device 2, and the wet spinning The device 1 consists of a coagulation bath container 4 with a coagulation bath liquid 3, a filter 6 with a spinning stock solution inlet 5, the spinning stock solution enters the filter 6 through the spinning stock solution inlet 5, connects the filter 6 and extends into the coagulation bath The liquid inlet pipe 8 with the spinneret 7 in the container 4, the godet roll 9 and the washing device 10 for connecting the spinning place of the spinneret 7, and the washing device 10 can adopt ultrasonic cleaning or pure water spraying commonly used in the art. Rinse and clean, forming device 2 comprises a bunching and splitting device 13 for concentrating and dispersing chitosan fiber tow 11, and bunching and splitting device 13 includes a pair of o...

Embodiment 2

[0049] In order to meet the actual production needs, a winding mechanism 32 can be set at the output end of the web forming machine net curtain 22, and the filament fiber web 20 on the web forming machine net curtain 22 is dried by the drying mechanism 24, and then rolled up by the winding mechanism 32. Directly wound and packaged. Between the godet roll 9 and the bunching and splitting device 13, the drafting roll for improving the strength of the chitosan fiber tow 11 can also be selected, and the drafting roll consists of a main drafting roll 33 and a secondary drafting roll 34 composition.

Embodiment 3

[0051] The same parts of this embodiment and other embodiments will not be repeated, and the difference is that a second molding device is provided, such as Figure 7 As shown, the forming device includes a conveying roller 36 for spreading the wet fiber tow 35, and a conveying screen 37 connected to the conveying roller 36 for conveying the spread wet fiber tow 35. A drafting roller 38 for drafting the wet fiber tow 35 is arranged between the conveying roller 36 and the conveying mesh curtain 37 .

[0052] The output end 39 of conveying net curtain 37 is connected with a swing net curtain 41 that is used to reciprocally stack wet fiber tow 35 into wet fiber tow net 40, and the output end 42 of described swing net curtain 41 is provided with a The stacked wet fiber tow webs 40 intersect each other layer by layer with a web forming machine net curtain 43, and at least one side of the web forming machine web curtain 43 is provided with a hydroentanglement device for hydroentangl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention discloses a technology for making pure chitosan fiber filament non-woven fabric based on a wet spinning technology. The technology comprises the steps of 1, conventional wet spinning; 2, net laying, wherein dried primary chitosan fiber bundles are evenly scattered and laid on a lapper net curtain to form crossed and stacked filament fiber nets; 3, spunlace reinforcement; 4, drying; 5, winding. The step 1 belongs to the spinning technology, and the steps 2, 3, 4 and 5 belong to the non-woven fabric forming technology. The equipment is composed of a wet spinning device and a non-woven fabric forming device. The concept that non-woven fabric cannot be produced through pure chitosan fiber in the past is broken through, filament fiber nets formed by continuous chitosan fiber filament net laying can pass through the spunlace step without being scattered, the non-woven fabric product can be obtained, and thin, transparent, high moisture absorption performance of the product can be ensured, relevant steps in a traditional wet spinning technology are omitted, the production cost is effectively reduced, pollution produced in the technological process to the environment is reduced, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field, in particular to a process and equipment for preparing pure chitosan fiber filament non-woven fabrics based on wet spinning technology. Background technique [0002] Non-woven fabrics can currently be prepared from various fibers obtained by dry and wet spinning, such as polyester, polypropylene, nylon, spandex, and fibers such as chitosan, acrylic, chitosan, and seaweed. Spunlace and other methods of production. Chitosan has good bioactivity, biocompatibility and biodegradability, and chitosan fibers are used to obtain fabrics and non-woven products, which have been widely used in the medical field. Underwear, panties and socks of different specifications are made from chitosan fiber. The clinical application in the hospital has proved that they have good antibacterial properties. The antibacterial rate of pure spinning is over 99%, the antibacterial rate of control fiber is less than 5%, and the bacter...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/11D04H3/03D01F9/00D01D5/06D01D5/12D01D13/00D01D4/02
Inventor 陈韶娟孙亚宁
Owner QINGDAO UNIV
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