CN102995416A - Technology for internally coating woven bag with isocyanate composition - Google Patents
Technology for internally coating woven bag with isocyanate composition Download PDFInfo
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- CN102995416A CN102995416A CN2012104780037A CN201210478003A CN102995416A CN 102995416 A CN102995416 A CN 102995416A CN 2012104780037 A CN2012104780037 A CN 2012104780037A CN 201210478003 A CN201210478003 A CN 201210478003A CN 102995416 A CN102995416 A CN 102995416A
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- woven bag
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Abstract
The invention discloses a woven bag coating method which comprises the following steps of: weaving warps and wefts made from fiber materials into a cylindrical fiber woven layer on a circular weaving machine; spraying the coating prepared on site onto the inner side of the woven layer to form a lining, wherein the coating comprises the following components in parts by mass: 21-25 parts of ethylene-vinyl acetate copolymer, 5-15 parts of polyvinyl alcohol, 35-40 parts of isocyanate, 20-35 parts of polyether glycol and 10-20 parts of diethyl methyl benzene diamine; and drying to obtain a product of inner-spraying woven bag.
Description
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 21-25
Polyvinyl alcohol 5-15
Isocyanates 35-40
Polyether Glycols 20-35
Diethyl toluene diamine 10-20.
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 21
Polyvinyl alcohol 5
Isocyanates 35
Polyether Glycols 20
Diethyl toluene diamine 10.
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 25
Polyvinyl alcohol 15
Isocyanates 40
Polyether Glycols 35
Diethyl toluene diamine 20
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 23
Polyvinyl alcohol 10
Isocyanates 38
Polyether Glycols 28
Diethyl toluene diamine 15
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 21-25
Polyvinyl alcohol 5-15
Isocyanates 35-40
Polyether Glycols 20-35
Diethyl toluene diamine 10-20
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104780037A CN102995416A (en) | 2012-11-22 | 2012-11-22 | Technology for internally coating woven bag with isocyanate composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104780037A CN102995416A (en) | 2012-11-22 | 2012-11-22 | Technology for internally coating woven bag with isocyanate composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102995416A true CN102995416A (en) | 2013-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104780037A Pending CN102995416A (en) | 2012-11-22 | 2012-11-22 | Technology for internally coating woven bag with isocyanate composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102995416A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095350A (en) * | 1993-05-20 | 1994-11-23 | 何春武 | Directly spraying plastics technology for woven plastic packing bag |
| CN101413607A (en) * | 2008-11-27 | 2009-04-22 | 泰州五行消防水带有限公司 | Single-surface glue water tape and making method thereof |
| CN101443378A (en) * | 2006-05-15 | 2009-05-27 | 日本聚氨酯工业株式会社 | Aqueous modified polyisocyanate, non-yellowing coating composition, and adhesive composition |
| CN101864671A (en) * | 2010-06-18 | 2010-10-20 | 辽宁恒星精细化工（集团）有限公司 | Waterproof moisture permeation polyurethane paint used for textiles and preparation method |
| CN102766918A (en) * | 2012-07-17 | 2012-11-07 | 尚勇 | Antioxidant and ultravioresistant polypropylene woven bag raw material |
-
2012
- 2012-11-22 CN CN2012104780037A patent/CN102995416A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095350A (en) * | 1993-05-20 | 1994-11-23 | 何春武 | Directly spraying plastics technology for woven plastic packing bag |
| CN101443378A (en) * | 2006-05-15 | 2009-05-27 | 日本聚氨酯工业株式会社 | Aqueous modified polyisocyanate, non-yellowing coating composition, and adhesive composition |
| CN101413607A (en) * | 2008-11-27 | 2009-04-22 | 泰州五行消防水带有限公司 | Single-surface glue water tape and making method thereof |
| CN101864671A (en) * | 2010-06-18 | 2010-10-20 | 辽宁恒星精细化工（集团）有限公司 | Waterproof moisture permeation polyurethane paint used for textiles and preparation method |
| CN102766918A (en) * | 2012-07-17 | 2012-11-07 | 尚勇 | Antioxidant and ultravioresistant polypropylene woven bag raw material |
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Application publication date: 20130327 |