Process of coating inside of woven bag by using isocyanate composition

A technology for coating isocyanate, woven bags, applied in textile and papermaking, one-component polyolefin rayon, spray/jet textile material processing, etc.

Inactive Publication Date: 2013-03-20
QINGDAO PENGHAI SOFT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing woven bag surface coating methods and provide

Method used

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  • Process of coating inside of woven bag by using isocyanate composition
  • Process of coating inside of woven bag by using isocyanate composition
  • Process of coating inside of woven bag by using isocyanate composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] According to the polypropylene resin that is 100 parts by weight, add the antioxidant 1010 that is 0.4 part by weight, the ultraviolet absorber UV-327 that is 0.5 part by weight, the auxiliary antioxidant DLTP that is 0.6 part by weight; The mixture obtained is passed The extruder and wire drawing machine are stretched and wound to make polypropylene filament. On the circular loom, use polypropylene silk as warp and weft to weave into tubular fiber braided layer, then paint is sprayed on the inner side of braided layer to form inner liner, and described paint includes following components (mass parts) and content:

[0013]

[0014] After the above-mentioned coating components are fully mixed on-site, under the conditions of temperature 45°C and pressure 10MPa, use a spray gun to spray on the inner side of the fiber braided layer to form a lining coating with a spray thickness of 0.1mm. After hot air drying, the inner lining is obtained. Spray woven bags.

Embodiment 2

[0016] Repeat embodiment 1, the coating process of woven bag is roughly the same as embodiment 1, and difference is that coating comprises following component (mass part) and content:

[0017]

[0018] The spraying temperature is 60°C, the spraying pressure is 15MPa, and the spraying thickness is 0.6mm.

Embodiment 3

[0020] Repeat embodiment 1, the coating process of woven bag is roughly the same as embodiment 1, and difference is that coating comprises following component (mass part) and content:

[0021]

[0022] The spraying temperature is 53°C, the spraying pressure is 13MPa, and the spraying thickness is 0.3mm.

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Abstract

The invention discloses a process of coating the inside of a woven bag by using an isocyanate composition. The process comprises the following steps of: firstly, weaving a cylindrical fiber woven layer by using warps and wefts, both of which are made of fiber materials, on a circular weaving machine, then, spraying the coating prepared on site to the inner side of the woven layer to form a liner, and drying to obtain an inside-sprayed woven bag product, wherein the coating comprises the following components in parts by weight: 21-25 parts of ethylene-vinyl acetate copolymer, 56-65 parts of polyvinyl alcohol, 16-25 parts of isocyanate, 36-45 parts of polyether glycol, and 10-30 parts of diethyl toluenediamine.

Description

technical field [0001] The invention relates to a coating method, in particular to a process of coating an isocyanate composition inside a woven bag. Background technique [0002] Woven bags are widely used in industry, agriculture, construction and other industries to transport powder products. Woven bags are usually woven from cross-woven wires, and there are tiny gaps at the intersections of the woven wires. In order to make up for this defect, people have used polyethylene resin for the surface coating of woven bags. This coating is easy to age and fall off, is not wear-resistant, and has a short service life. The manufacturing method of this kind of surface coated woven bag is: weave the fiber tube on the circular loom first, then add the coating resin into the extruder, extrude the hot melt film through the extruder, and coat it on the braided tube The outer surface of the object becomes a product. This production method requires more production equipment, consumes...

Claims

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Application Information

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IPC IPC(8): D06M15/568D06M15/333D06B1/02D01F6/46D06M101/20
Inventor 于忠清王兵
Owner QINGDAO PENGHAI SOFT CO LTD
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