Process for coating inside woven bag

A woven bag, coating technology, applied in the direction of spray/jet textile material treatment, single-component polyolefin artificial filament, etc.

Inactive Publication Date: 2013-03-27
青岛天鹅新材料织造有限公司
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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 a wear-resistant, corrosion-resistant, high-strength, long-life , while the production process is simple, high efficiency, non-polluting woven bag coating method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 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 a circular loom, polypropylene yarn is used as warp and weft to weave a cylindrical fiber braided layer, and then the paint is sprayed on the inner side of the braided layer to form an inner lining. The paint includes the following components (parts by mass) and content:

[0017] Ethylene-vinyl acetate copolymer 16

[0018] Polyvinyl alcohol 16

[0019] Isocyanate 25

[0020] Polyether diol 5

[0021] Diethyltoluenediamine 7.

[0022] 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 o...

Embodiment 2

[0024] 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:

[0025] Ethylene-vinyl acetate copolymer 20

[0026] Polyvinyl alcohol 20

[0027] Isocyanate 16

[0028] Polyether diol 15

[0029] Diethyltoluenediamine 11

[0030] The spraying temperature is 60°C, the spraying pressure is 15MPa, and the spraying thickness is 0.6mm.

Embodiment 3

[0032] 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:

[0033] Ethylene-vinyl acetate copolymer 18

[0034] Polyvinyl alcohol 25

[0035] Isocyanate 20

[0036] Polyether diol 10

[0037] Diethyltoluenediamine 9

[0038] 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 for coating inside a woven bag. The process comprises the following steps of: firstly, weaving warps and wefts made of fiber materials into a cylindrical fiber braid on a circular weaving machine; then spraying a coating prepared on site on the inner side of the braid to form a liner, wherein the coating comprises the following components in parts by mass: 16-20 parts of ethylene-vinyl acetate copolymer, 16-25 parts of polyvinyl alcohol, 16-25 parts of isocyanate, 5-15 parts of polyether glycol and 7-11 parts of diethyl methyl benzene diamine; and drying to obtain the woven bag the inside of which is coated with the coating.

Description

technical field [0001] The invention relates to a coating method, in particular to an internal coating process of 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 a lot of energy, and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/568D06M15/333D06B1/02D01F6/46D06M101/20
Inventor 王俊罡董福建张学刚朱彩凤
Owner 青岛天鹅新材料织造有限公司
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