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Production process of plant fiber nonwoven filter cloth for wet air puncture drainage reinforcement

A plant fiber and production process technology, applied in non-woven fabrics, textiles and papermaking, water resources protection and other directions, can solve the problems of short process flow, fiber web strength not meeting the quality requirements of non-woven geotextiles, low gram weight, etc. , to achieve the effects of rich raw material sources, good market prospects and short process flow

Active Publication Date: 2018-05-25
NANJING HYDRAULIC RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, plant fibers have high rigidity, poor deformation recovery and fiber uniformity, and the fibers are easily damaged during acupuncture reinforcement. The degree of mechanical bonding formed by the intertwining of fibers in the fiber web is not as good as that of synthetic fibers, and the strength of the fiber web after reinforcement cannot reach To the quality requirements in the non-woven geotextile standard
[0011] The dry-laid spunlace reinforcement process requires a large investment in equipment and high production costs, and the spunlace fabric is relatively thin and has a low grammage, so the scope of application in engineering is narrow
[0012] The wet-laid process is more suitable for plant fiber raw materials, but the strength index and water permeability of the produced fabric fiber non-woven geotextile cannot meet the engineering requirements
[0013] Whether it is acupuncture or spunlace, in the process of carding before puncture reinforcement, the fiber uniformity is not easy to control, which affects product quality
The spunbond web forming technology has a short process flow, and its web thickness uniformity is poor, which affects the uniformity of drainage
[0014] After searching, it is found that the Chinese invention patent with patent number 200910012612.1 and authorized announcement number CN101619520B discloses a degradable composite spunlace nonwoven fabric and its production method, which can produce thick and soft handfeel, good water absorption, good dust removal effect, low cost, and Degradable composite spunlaced nonwovens with degradable functions. However, since this patent is not aimed at drainage board water filtration, it is impossible to ensure that the obtained nonwovens can meet the technical parameters of the filter membrane.

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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  • Production process of plant fiber nonwoven filter cloth for wet air puncture drainage reinforcement
  • Production process of plant fiber nonwoven filter cloth for wet air puncture drainage reinforcement
  • Production process of plant fiber nonwoven filter cloth for wet air puncture drainage reinforcement

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Embodiment

[0042] The basic steps of the production process of the special plant fiber nonwoven filter cloth for wet air puncture type drainage reinforcement in this embodiment are as follows:

[0043] The first step, the plant fiber raw material is first cut into short fibers, then opened into single fibers, and then the plant fibers are made into a suspension slurry, which contains plant-derived adhesives (no chemical adhesives are used here, which can avoid polluted environment);

[0044] The second step is to put the plant fiber suspension slurry into the wet-laid equipment to make a plant fiber web, or put the plant fiber suspension slurry and the plant fiber yarn net into the wet-laid equipment at the same time to make a web with yarn Vegetable webs of nets;

[0045] The third step is to puncture the plant fiber net with jet air, so that the fibers in the plant fiber net are entangled with adjacent fibers or yarns, and form a mechanical combination, and finally the plant fiber net...

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Abstract

The invention relates to a production process for a wet-laid air puncture type plant fiber non-woven fabric, which comprises: first opening plant fiber raw materials into single fibers, and then preparing the plant fiber into a suspension slurry; preparing the plant fiber suspension slurry through a wet-laid equipment The plant fiber web is formed; the plant fiber web is punctured by the jet air, so that the fibers in the plant fiber web are entangled with the adjacent fibers or yarns, and form a mechanical bond, and finally the plant fiber web is reinforced; and then dried The final product of plant fiber non-woven fabric is obtained by shaping, hot-rolling reinforcement, and rolling. The invention is specially aimed at plant fibers, and can produce plant fiber non-woven geotextiles that meet the requirements in both strength and water permeability.

Description

technical field [0001] The invention relates to a production process of a wet airflow puncture type special plant fiber non-woven filter cloth for drainage reinforcement. The obtained special plant fiber non-woven filter cloth for drainage reinforcement can be used as a drainage board filter membrane, and belongs to the production technology of special filter cloth for drainage reinforcement field. Background technique [0002] As far as the applicant knows, geosynthetics generally refer to various types of products made from synthetic polymers, and are a general term for synthetic materials used in civil engineering and geotechnical engineering. Geotextiles are water-permeable planar geosynthetic materials, which are divided into non-woven (non-woven) geotextiles and woven (woven) geotextiles according to the manufacturing method. Non-woven geotextiles are fabrics in which fibers are combined in a non-directional arrangement, and woven geotextiles are fabrics in which two ...

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): D04H1/4266D04H1/587D04H1/46D04H1/72
CPCY02A20/402
Inventor 杨明昌时爱祥陈海波黄家青周卫东郑澄锋徐锴蔡晓勇朱翠民张红
Owner NANJING HYDRAULIC RES INST
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