CN109225749A - A kind of coil painting production line and technique using water paint - Google Patents
A kind of coil painting production line and technique using water paint Download PDFInfo
- Publication number
- CN109225749A CN109225749A CN201810933628.5A CN201810933628A CN109225749A CN 109225749 A CN109225749 A CN 109225749A CN 201810933628 A CN201810933628 A CN 201810933628A CN 109225749 A CN109225749 A CN 109225749A
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- section
- coating
- coiled material
- coil
- strainer
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0263—After-treatment with IR heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
Abstract
The invention discloses a kind of coil painting production lines and technique using water paint, production line includes uncoiling section, roller coating section, levelling section, baking-curing section, air-cooled section and winding section, the paint vehicle disk of roller coating section is equipped with strainer, and strainer is used to filter the water paint of reflux.Coil painting production line of the invention by the way that strainer is arranged in paint vehicle disk, while being arranged ultra redray drier in levelling section, surprisingly reduces the quick-fried abscess defect in coating, substantially increase the coating quality of product.
Description
Technical field
The present invention relates to a kind of coil painting production lines and technique using water paint.
Background technique
In recent years, with the continuous development of global economy and China's economic, all kinds of building materials are continued to bring out, pre- roller coating volume
Material coating product has many advantages, such as that decorative strong, weather-proof, corrosion-resistant, anti-pollution and processing forming are good, is widely used in building curtain
Wall, composited aluminum and plastic decking, top-grade building roofing, roof, door and window, ceiling, each electronic product, car and boat shell, container etc..
By taking aluminium coiled material as an example, with the rapid development of China's aluminium coil coating technology, aluminium coil painting product applications
Constantly expand, requirement of the market to aluminium coiled material product is also continuously increased.
Traditional coil painting production line, it is common to use solvent based coating.The VOC yield of solvent based coating is big, exists
Biggish security risk, while that there is also discharge amount of pollution is big, it is difficult to it is up to standard the deficiencies of.Water paint is relatively environment-friendly, using
It is safer, it is increasingly subject to the welcome of people.Increasingly strict with environmental requirement, more and more coil painting production lines start
Conversion water paint, while original solvent based coating coil painting improvement of manufacturing line being produced at water paint coating coiled material
Line.Common coil painting production line includes uncoiling section, roller coating section, levelling section, baking-curing section, air-cooled section and winding section.?
In coating process, coating generally first imports paint vehicle disk, the roll coater of roller coating section is then entered by the feeding roller strap of roller coating section, for rolling up
The coating of material.Coiled material after coating is heating and curing in levelling, winds after cooling, detection qualification.To guarantee levelling effect, levelling
Section is general, and the temperature remains within the normal range, in case there is defect in film.
Although water paint is more environmentally friendly, safety, in the process used, due to the mutual extrusion of each roller, it is easy to blister
And the foam generated is relatively difficult to eliminate.When being recycled containing frothy extra paint return, it can cause because of the presence of foam
Film is uneven, and quick-fried abscess defect is significantly increased, and affects the quality of coating.This causes to need in the coating process of coiled material
The composition of water paint is particularly optimized, increases defoaming agent such as additional, or carry out to the water paint of recycling secondary
De-bubble processing, to reduce the yield of defect.Nonetheless, relative to solvent based coating, the quick-fried abscess ratio of defects of water paint
Or it is relatively high.How existing coil painting production line is transformed, reduce foam caused by defect, be have it is to be solved
Technical problem.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of improved coiled materials using water paint to apply
Assembling production lines and technique, the production line and technique can effectively reduce the holiday caused by water paint foam.
The technical solution used in the present invention is:
A kind of coil painting production line using water paint, including uncoiling section, roller coating section, levelling section, baking-curing section,
Air-cooled section and winding section, the paint vehicle disk of roller coating section are equipped with strainer, and strainer is used to filter the water paint of reflux.
As the further improvement of above-mentioned coil painting production line, the mesh mesh number of strainer is 80~180 mesh.
As the further improvement of above-mentioned coil painting production line, the top edge of strainer be higher than paint vehicle disk top edge 20~
60mm。
As the further improvement of above-mentioned coil painting production line, levelling section is equipped with ultra redray drier.
As the further improvement of above-mentioned coil painting production line, coiled material is aluminium coiled material.
A kind of coil coating methods, include the following steps:
1) by the coiled material uncoiling to coating, the dirt on surface is removed, obtains the coiled material to coating；
2) water paint is diluted to working viscosity with deionized water, and is delivered to paint vehicle disk, wherein paint vehicle disk is equipped with filter
Net,
Strainer is used to filter the water paint of reflux；
3) water paint in paint vehicle disk is brought into roll coater with feeding roller, the coiled material for treating coating carries out coating；
4) coiled material after coating is successively delivered to levelling section, baking-curing section, air-cooled section and winding section, completes the painting of coiled material
Dress.
As the further improvement of above-mentioned coil coating methods, levelling section is additionally provided with infrared drying, and the temperature of drying is 50
~80 DEG C, the time of drying is 30~90s.
As the further improvement of above-mentioned coil coating methods, the working viscosity of water paint is 30~150s, and viscosity makes
It is obtained with Ford viscosity cup or Cai's grace flow cup measurement.
As the further improvement of above-mentioned coil coating methods, the baking temperature of baking-curing section is 220 DEG C~300 DEG C,
For plate temperature control system at 200 DEG C~280 DEG C, baking time is 30~150s.
As the further improvement of above-mentioned coil coating methods, coiled material is aluminium coiled material.Other coiled materials can be similar progress
Coating.
The beneficial effects of the present invention are:
By the way that strainer is arranged in paint vehicle disk, while infrared drying is arranged in levelling section in coil painting production line of the invention
Device surprisingly reduces the quick-fried abscess defect in coating, substantially increases the coating quality of product.
Coating process of the invention, film thickness is uniform, and coating process is simple, and painting effect is good, not only solves aluminium coiled material
The production safety and the problems such as construction environmental protection, health because traditional coating process bring has been determined, while being satisfied with existing solvent
The coating equipment condition and construction requirement of type aluminium coil coating realize Water-borne modification.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of coil painting production line of the present invention；
Fig. 2 is the structural schematic diagram of coil painting production line roller coating section of the present invention.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is further illustrated.
Referring to Figures 1 and 2, a kind of coil painting production line using water paint, including uncoiling section 1, roller coating section 2, stream
Flat section 3, baking-curing section 4, air-cooled section 5 and winding section 6, the paint vehicle disk 21 of roller coating section 2 are equipped with strainer 22, and strainer 22 is for filtering
The water paint of reflux.
As the further improvement of above-mentioned coil painting production line, the mesh mesh number of strainer is 80~180 mesh.This mesh number
Under, it can be well isolated from foam, while the reflux for not influencing coating again uses.
As the further improvement of above-mentioned coil painting production line, the top edge of strainer be higher than paint vehicle disk top edge 20~
60mm.Strainer can be exceeded in this way to avoid foam, reduce the quick-fried abscess or needle pore defect of finished product.
As the further improvement of above-mentioned coil painting production line, levelling section 3 is equipped with ultra redray drier 31.
As the further improvement of above-mentioned coil painting production line, coiled material is aluminium coiled material.
A kind of coil coating methods, include the following steps:
1) by the coiled material uncoiling to coating, the dirt on surface is removed, obtains the coiled material to coating；
2) water paint is diluted to working viscosity with deionized water, and is delivered to paint vehicle disk, wherein paint vehicle disk is equipped with filter
Net,
Strainer is used to filter the water paint of reflux；
3) water paint in paint vehicle disk is brought into roll coater with feeding roller, the coiled material for treating coating carries out coating；
4) coiled material after coating is successively delivered to levelling section, baking-curing section, air-cooled section and winding section, completes the painting of coiled material
Dress.
As the further improvement of above-mentioned coil coating methods, levelling section is additionally provided with infrared drying, and the temperature of drying is 50
~80 DEG C, the time of drying is 30~90s.Not only levelling is not adversely affected using infrared drying, it is unexpected instead to subtract
The generation of quick-fried abscess defect is lacked.
As the further improvement of above-mentioned coil coating methods, the working viscosity of water paint is 30~150s, and viscosity makes
It is obtained with Ford viscosity cup or Cai's grace flow cup measurement.
As the further improvement of above-mentioned coil coating methods, the baking temperature of baking-curing section is 220 DEG C~300 DEG C,
For plate temperature control system at 200 DEG C~280 DEG C, baking time is 30~150s.
As the further improvement of above-mentioned coil coating methods, coiled material is aluminium coiled material.
Below with reference to embodiment, technical solution of the present invention is further illustrated.It is necessarily pointed out that in detail below
Embodiment is served only for that the invention will be further described, does not represent limiting the scope of the invention.Other people are according to this hair
The bright some nonessential modifications made and adjustment still fall within protection scope of the present invention.
Unless otherwise instructed, according to a conventional method or universal method detection coating appearance and performance.
In dry film appearance, every 10m2In middle coiled material ,≤5 quick-fried abscesses (pin hole) belong to normally, 5~15 quick-fried abscess (needles
Hole) belong to local defect, 15~30 quick-fried abscesses (pin hole) belong to light defects, and 30~50 quick-fried abscesses (pin hole) belong to obviously
Defect, > 50 quick-fried abscesses (pin hole) belong to major defect.
Examples 1 to 3
The main coating process and condition of Examples 1 to 3, paint film appearance is as shown in table 1, and the performance test results of paint film are such as
Shown in table 2.
The main coating process and visual condition table of table 1, Examples 1 to 3
Table 2, the appearance of coat of Examples 1 to 3 and performance test results
The main coating process and condition of comparative example 1~3 same Examples 1 to 3 respectively, the difference is that comparative example 1~3
It all is not provided with filter screen in paint vehicle disk in coating process, and the levelling section of roll coater outlet does not open Heated by Far-Infrared Radiation,
Its paint film appearance is as shown in table 3.
The paint film appearance situation table of table 3, comparative example 1~3
The main coating process and condition of comparative example 4~6 same Examples 1 to 3 respectively, the difference is that comparative example 4~6
Do not open Heated by Far-Infrared Radiation, paint film appearance is as shown in table 4.
The paint film appearance situation table of table 4, comparative example 4~6
1~3 inspection result of the embodiment of the present invention shows: the reality of water paint coil painting line according to the invention and technique
It applies, the appearance of coat and performance indexes of different types of aqueous coil coating meet coatings for aluminum coil chemical industry standard
It is required that.With 1~3 comparing result of comparative example it is found that the present invention is by increasing strainer in roll coater paint vehicle disk, levelling section increases infrared
Equipment for drying is dodged in radiation, can overcome water paint blistering foam stabilizing of construction operation for a long time on solvent type coil coating paint line
Problem guarantees the correct coating of aqueous coil coating.
Claims (10)
1. a kind of coil painting production line using water paint, including uncoiling section, roller coating section, levelling section, baking-curing section, wind
Cold section and winding section, it is characterised in that: the paint vehicle disk of roller coating section is equipped with strainer, and strainer is used to filter the water paint of reflux.
2. coil painting production line according to claim 1, it is characterised in that: the mesh mesh number of strainer is 80~180 mesh.
3. coil painting production line according to claim 1, it is characterised in that: the top edge of strainer is higher than paint vehicle disk top
20~60mm of edge.
4. described in any item coil painting production lines according to claim 1~3, it is characterised in that: levelling section is equipped with infrared baking
Equipment for drying.
5. described in any item coil painting production lines according to claim 1~3, it is characterised in that: coiled material is aluminium coiled material.
6. a kind of coil coating methods, include the following steps:
1) by the coiled material uncoiling to coating, the dirt on surface is removed, obtains the coiled material to coating；
2) water paint being diluted to working viscosity with deionized water, and is delivered to paint vehicle disk, wherein paint vehicle disk is equipped with strainer,
Strainer is used to filter the water paint of reflux；
3) water paint in paint vehicle disk is brought into roll coater with feeding roller, the coiled material for treating coating carries out coating；
4) coiled material after coating is successively delivered to levelling section, baking-curing section, air-cooled section and winding section, completes the coating of coiled material.
7. coil coating methods according to claim 6, it is characterised in that: levelling section is additionally provided with infrared drying, drying
Temperature is 50~80 DEG C, and the time of drying is 30~90s.
8. coil coating methods according to claim 6, it is characterised in that: the working viscosity of water paint be 30~
150s, viscosity are obtained using Ford viscosity cup or Cai's grace flow cup measurement.
9. according to the described in any item coil coating methods of claim 6~8, it is characterised in that: the baking temperature of baking-curing section
Degree is 220 DEG C~300 DEG C, and for plate temperature control system at 200 DEG C~280 DEG C, baking time is 30~150s.
10. according to the described in any item coil coating methods of claim 6~8, it is characterised in that: coiled material is aluminium coiled material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810933628.5A CN109225749A (en) | 2018-08-16 | 2018-08-16 | A kind of coil painting production line and technique using water paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810933628.5A CN109225749A (en) | 2018-08-16 | 2018-08-16 | A kind of coil painting production line and technique using water paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109225749A true CN109225749A (en) | 2019-01-18 |
Family
ID=65069960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810933628.5A Pending CN109225749A (en) | 2018-08-16 | 2018-08-16 | A kind of coil painting production line and technique using water paint |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328120A (en) * | 2019-07-06 | 2019-10-15 | 苏州市金桥包装容器有限公司 | A kind of metal drum production coating roller coating technology |
| CN114086322A (en) * | 2021-11-24 | 2022-02-25 | 贵州中铝彩铝科技有限公司 | Method for applying inorganic nano coating in roller coating production |
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| CN114086322A (en) * | 2021-11-24 | 2022-02-25 | 贵州中铝彩铝科技有限公司 | Method for applying inorganic nano coating in roller coating production |
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Application publication date: 20190118 |
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