CN102995422A - Method for coating isocyanate composition in woven bag - Google Patents

Method for coating isocyanate composition in woven bag Download PDF

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Publication number
CN102995422A
CN102995422A CN2012104862431A CN201210486243A CN102995422A CN 102995422 A CN102995422 A CN 102995422A CN 2012104862431 A CN2012104862431 A CN 2012104862431A CN 201210486243 A CN201210486243 A CN 201210486243A CN 102995422 A CN102995422 A CN 102995422A
Authority
CN
China
Prior art keywords
parts
woven bag
weight portion
coating
woven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012104862431A
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Chinese (zh)
Inventor
张明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Baizhong Chemical Technology Co Ltd
Original Assignee
Qingdao Baizhong Chemical Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Baizhong Chemical Technology Co Ltd filed Critical Qingdao Baizhong Chemical Technology Co Ltd
Priority to CN2012104862431A priority Critical patent/CN102995422A/en
Publication of CN102995422A publication Critical patent/CN102995422A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a coating method for a woven bag. The coating method comprises the following steps of: firstly weaving warp and weft made of fiber material to form a cylindrical fiber woven layer on a circular weaving machine, and then spraying a coating which is prepared on site on the inner side of the woven layer to form an inner lining, wherein the coating comprises the following components in parts by weight: 26-30 parts of ethylene-vinyl acetate copolymer, 36-45 parts of polyvinyl alcohol, 35-55 parts of isocyanate, 20-40 parts of polyether glycol and 15-28 parts of diethyl methyl benzene diamine. An internally sprayed woven bag product can be obtained after drying.

Description

A kind of method that in woven bag, applies isocyanate composition
Technical field
The present invention relates to a kind of painting method, specifically, relate to a kind of painting method of woven bag.
Background technology
Woven bag is the packing of the widely used conveying powdered products of industry such as industry, agricultural, building.Woven bag is normally formed by interlacing silk braiding, has small slit in the crossover sites of braided wires.In order to remedy this defective, people once were used for the woven bag face coat with polyvinyl resin.This coating is aging coming off easily, and also not wear-resisting, service life is shorter.The manufacture method of this kind face coat woven bag is: first weaving fiber tubular article on circular loom, then coated with resins is joined in the extruder, and through extruder extruding and hot melting film, be coated to the outer surface of knitted cylindrical thing and become product.This production method needs more production equipment, and energy resource consumption is larger, and factory building is also had requirement; Simultaneously environment and operating personnel's health is all brought adverse effect.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency that overcomes existing woven bag surface coating process, provide a kind of wear-resisting, corrosion-resistant, intensity is high, long service life, production technology is simple simultaneously, efficient is high, free of contamination woven bag painting method.
The woven bag of manufacturing of the present invention is made of fiber braiding layer and inner liner, and improvements are that described inner liner forms lining by spraying method in fiber braiding layer inside.
Described fiber braiding layer is take polypropylene (English name pp) as main raw material, through extruding, stretch the formation flat filament, weaves, works out through circular loom again.The thickness of described inner liner is 0.1~0.6mm.
Woven bag preparation method of the present invention is: warp and the parallel that will adopt fibrous material to make on circular loom first are woven into the tubular fiber braiding layer, then spray painting is formed liner in the braid inboard, described coating comprises following component (parts by mass) and content:
Ethylene-vinyl acetate copolymer 26-30
Polyvinyl alcohol 36-45
Isocyanates 35-55
Polyether Glycols 20-40
Diethyl toluene diamine 15-28.
After the above-mentioned coating component prepared abundant mixing at the scene, in temperature 45 C~60 ℃, under the condition of pressure 10~15MPa, utilize spray gun spraying in the inboard of fiber braiding layer, form lining coating, after the drying, product.
Above-mentioned warp and parallel are to adopt acrylic resin and are that to add weight portion be 0.4 part antioxidant 1010, the ultra-violet absorber UV-327 that weight portion is 0.5 part, the auxiliary antioxidant DLTP that weight portion is 0.6 part for 100 parts acrylic resin according to weight portion; The mixture that obtains is stretched by extruder and wire drawing machine; The polyacrylic fibres that rolling forms, it has high strength, high abrasion, good toughness, the premium properties such as lightweight.The coating of above-mentioned spraying is a kind of novel environment friendly material, it is inboard to be sprayed on the woven bag tubular article, have coating densification, continuous, jointless characteristics, corrosion-resistant, high temperature resistant, shock resistance, be difficult for aging coming off, and the fully moisture in the air-isolation and the infiltration of oxygen, especially be fit to carry chemical industry raw material, agrochemical, the pulverulent materials such as building building cement.Woven bag painting method provided by the invention has improved prior art and has used extruder at woven bag outer surface coated plastic film, then utilizes the again complicated technology of coated plastic film of another surface that bag overturning machine translates into woven bag.Its objective is that a kind of raw materials consumption is provided is few, cost is low, and is lightweight, woven bag manufacture method of long service life and products thereof.Not only technique is simple, equipment investment is few for the method, production efficiency is high, and is conducive to environmental protection.
The specific embodiment
Further specify the present invention below by embodiment.
Embodiment 1
Be that to add weight portion be 0.4 part antioxidant 1010, the ultra-violet absorber UV-327 that weight portion is 0.5 part, the auxiliary antioxidant DLTP that weight portion is 0.6 part for 100 parts acrylic resin according to weight portion; The mixture that obtains is stretched rolling and make polyacrylic fibres by extruder and wire drawing machine.Be woven into tubular fiber braiding layer with polyacrylic fibres as warp and parallel at circular loom, then spray painting formed liner in the braid inboard, described coating comprises following component (parts by mass) and content:
Ethylene-vinyl acetate copolymer 26
Polyvinyl alcohol 36
Isocyanates 35
Polyether Glycols 20
Diethyl toluene diamine 15.
After scene preparation fully mixes, at temperature 45 C, under the condition of pressure 10MPa, utilize spray gun spraying in the inboard of fiber braiding layer the above-mentioned coating component, form lining coating, coating thickness 0.1mm namely obtains the woven bag of interior spraying after the heated-air drying.
Embodiment 2
Repeat embodiment 1, the coating processes of woven bag and embodiment 1 are roughly the same, and difference is that coating comprises following component (parts by mass) and content:
Ethylene-vinyl acetate copolymer 30
Polyvinyl alcohol 45
Isocyanates 55
Polyether Glycols 40
Diethyl toluene diamine 28
60 ℃ of spraying temperatures, spray pressure 15MPa, coating thickness 0.6mm.
Embodiment 3
Repeat embodiment 1, the coating processes of woven bag and embodiment 1 are roughly the same, and difference is that coating comprises following component (parts by mass) and content:
Ethylene-vinyl acetate copolymer 28
Polyvinyl alcohol 40
Isocyanates 45
Polyether Glycols 30
Diethyl toluene diamine 22
53 ℃ of spraying temperatures, spray pressure 13MPa, coating thickness 0.3mm.

Claims (5)

1. the painting method of a woven bag, the method may further comprise the steps: warp and the parallel that will adopt fibrous material to make on circular loom first are woven into the tubular fiber braiding layer, then spray painting is formed liner in the braid inboard, described coating comprises following component (parts by mass) and content:
Ethylene-vinyl acetate copolymer 26-30
Polyvinyl alcohol 36-45
Isocyanates 35-55
Polyether Glycols 20-40
Diethyl toluene diamine 15-28
Obtain the woven bag product of interior spraying after the drying.
2. described method according to claim 1 is characterized in that, described coating is on-the-spot preparation.
3. described method according to claim 1 is characterized in that the temperature of described spray painting is 45 ℃~60 ℃, and pressure is 10~15MPa.
4. described method according to claim 1 is characterized in that the thickness of described liner is 0.1~0.6mm.
5. described method according to claim 1, it is characterized in that described warp and parallel are to adopt acrylic resin and are that to add weight portion be 0.4 part antioxidant 1010, the ultra-violet absorber UV-327 that weight portion is 0.5 part, the auxiliary antioxidant DLTP that weight portion is 0.6 part for 100 parts acrylic resin according to weight portion; The mixture that obtains is stretched the polyacrylic fibres that rolling forms by extruder and wire drawing machine.
CN2012104862431A 2012-11-26 2012-11-26 Method for coating isocyanate composition in woven bag Pending CN102995422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012104862431A CN102995422A (en) 2012-11-26 2012-11-26 Method for coating isocyanate composition in woven bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012104862431A CN102995422A (en) 2012-11-26 2012-11-26 Method for coating isocyanate composition in woven bag

Publications (1)

Publication Number Publication Date
CN102995422A true CN102995422A (en) 2013-03-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012104862431A Pending CN102995422A (en) 2012-11-26 2012-11-26 Method for coating isocyanate composition in woven bag

Country Status (1)

Country Link
CN (1) CN102995422A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101565590A (en) * 2009-06-03 2009-10-28 顾建荣 Two-package curing type polyurethane paint and preparation thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101565590A (en) * 2009-06-03 2009-10-28 顾建荣 Two-package curing type polyurethane paint and preparation thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨宇润等: "100%固含量喷涂聚氨酯(脲)弹性体技术", 《聚氨酯工业》 *

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Application publication date: 20130327