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Inner coating technology of woven bag

A woven bag, coating technology, applied in the direction of textile and paper making, one-component polyolefin artificial filament, fiber type, etc.

Inactive Publication Date: 2013-03-13
QINGDAO VLAND BIOTECH GRP
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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. Use polypropylene silk as warp and weft to weave a cylindrical fiber braided layer on a circular loom, and then spray paint 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 10

[0018] Polyvinyl alcohol 15

[0019] Isocyanate 16

[0020] Polyether diol 36

[0021] Diethyltoluenediamine 5.

[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 of the fiber b...

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 5

[0026] Polyvinyl alcohol 5

[0027] Isocyanate 25

[0028] Polyether diol 45

[0029] Diethyltoluenediamine 10

[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 8

[0034] Polyvinyl alcohol 10

[0035] Isocyanate 20

[0036] Polyether diol 40

[0037] Diethyltoluenediamine 7.5

[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 provides an inner coating technology of a woven bag. The inner coating technology comprises the following steps: weaving wraps and wefts, which are made of fiber materials, through a circular weaving machine, so as to obtain a cylindrical fiber woven layer; spraying the coating prepared at site on the inner side of the woven layer to form a liner, wherein the coating comprises the following components (mass): 5 to 10 parts of ethylene-vinyl acetate copolymer, 5 to 15 parts of polyving akohol, 16 to 25 parts of isocyanate, 36 to 45 parts of polyether glycol, and 5 to 10 parts of diethyl methyl benzene diamine; and drying, thus obtaining the inner-coated woven bag.

Description

technical field [0001] The invention relates to a coating method, in particular to a technique for coating the inside 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...

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 Applications(China)
IPC IPC(8): D06M15/568D06M15/227D01F6/46D06M101/20
Inventor 陈刚曹成
Owner QINGDAO VLAND BIOTECH GRP
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