Nonwoven fabric nonwatertight moisture keeping template lining and method for manufacturing the same

A non-woven fabric and a manufacturing method technology are applied in the manufacturing field of non-woven fabric water-permeable and moisturizing template lining, which can solve the problems such as difficulty in uniform distribution of supplementary water, reduction of surface strength, insufficient maintenance moisture, etc. Longevity and ease of construction

Inactive Publication Date: 2008-07-16
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. It is not conducive to the discharge of air bubbles
[0007] 3. Difficult maintenance
[0008] 4. Poor surface quality
During the curing period of concrete, the water needed is lost quickly, resulting in insufficient curing water, causing the concrete surface to shrink, produce cracks, and reduce the surface strength, especially in the case of ports, docks, etc. where there are strong winds, salt spray, and acid spray , and the added water is also difficult to evenly distribute and remain on the overall surface of the cast body

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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  • Nonwoven fabric nonwatertight moisture keeping template lining and method for manufacturing the same
  • Nonwoven fabric nonwatertight moisture keeping template lining and method for manufacturing the same

Examples

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Comparison scheme
Effect test

specific example 1

[0064] 1. Production of nonwovens

[0065] Take 2kg of fibers with a denier of 0.7-1.5dtex, mix, loosen, card, lay the net, and then perform needle punching. The acupuncture density is: 2.2~2.4 needles / mm 2 , Acupuncture depth of 7 ~ 9mm. Weave into surface layer 1.

[0066] Take 26kg of fibers with a denier of 1-3.3dtex, mix, open, card, lay the net, and then perform needle punching. The acupuncture density is: 2.2~2.4 needles / mm 2 , Acupuncture depth of 7 ~ 9mm. Woven into porous layer 2. If the moisture retention requirement is high, the porous layer 2 can be mixed with a small amount (for example 0.5kg) of superabsorbent fibers (such as OASIS) or impregnated with water-absorbent materials (acrylate-starch or polyacrylate copolymerized superabsorbent resin).

[0067] Take 3kg of fibers with a denier of 2.2-4.4dtex, mix, loosen, card, lay the net, and then perform needle punching. The acupuncture density is: 2.2~2.4 needles / mm 2 , Acupuncture depth of 7 ~ 9mm. Weave...

specific example 2

[0074] 1. Production of nonwovens

[0075] Take 5kg of fibers with a denier of 0.7-1.5dtex, mix, loosen, card, lay the net, and then perform needle punching. The acupuncture density is: 2.2~2.4 needles / mm 2 , Acupuncture depth of 7 ~ 9mm. Weave into surface layer 1.

[0076] Take 26kg of fibers with a denier of 1-3.3dtex, mix, open, card, lay the net, and then perform needle punching. The acupuncture density is: 2.2~2.4 needles / mm 2, Acupuncture depth of 7 ~ 9mm. Woven into porous layer 2. If the moisture retention requirement is high, the porous layer 2 can be mixed with a small amount (0.5kg) of superabsorbent fibers (OASIS, etc.) or impregnated with water-absorbent materials (acrylate-starch or polyacrylate copolymerized superabsorbent resin).

[0077] Arrange the non-woven fabrics of the above-mentioned surface layer 1 and porous layer 2 from top to bottom, and then go through repeated needling, heat treatment, and calendering processes to form a semi-finished non-wo...

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 non-weaved cloth permeable keep-wet lining plate comprises two or three layers of different hole diameter prepared by manufacture and post treatment techniques; wherein, the double-layer structure comprises surface layer (1) and porous layer (2) that link to cement and mould plate and prepared by fiber of fineness of 07~1.5, 1~3.3dtex with hole diameters of 1~10, 4~15mu m separately; the three-layer structure comprises up and down surface (1) touched with cement, porous layer (2) and stuck layer (3) linked to mould plate and prepared by fiber of fineness 2.2~4.4dtex with hole diameter of 10~30mu m. This product has well performance and fits to industrial yield.

Description

technical field [0001] The invention relates to the field of concrete pouring materials, in particular to a method for manufacturing a non-woven fabric permeable and moisture-retaining template lining. Background technique [0002] 1. Disadvantages of the existing concrete pouring construction mode [0003] Affected by the harsh natural environment, the damage of concrete often starts from the surface and then develops gradually. Therefore, people continue to study and use various methods to improve the durability of surface concrete. The permeable formwork process is a new technology to improve and improve the performance of surface concrete. [0004] In the traditional concrete construction technology, the contact surface between the formwork and the concrete is completely closed, and the technical indicators of the concrete will not change after the concrete is put into the mold. The water needed to meet certain construction workability requirements accounts for about 4...

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): B32B19/00E04G9/10
Inventor 曾宪森卢记军
Owner WUHAN TEXTILE UNIV
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