CN102698949A - Preparation method of vertical texture colorful board as well as colorful board manufactured by using preparation method - Google Patents
Preparation method of vertical texture colorful board as well as colorful board manufactured by using preparation method Download PDFInfo
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- CN102698949A CN102698949A CN2012101432855A CN201210143285A CN102698949A CN 102698949 A CN102698949 A CN 102698949A CN 2012101432855 A CN2012101432855 A CN 2012101432855A CN 201210143285 A CN201210143285 A CN 201210143285A CN 102698949 A CN102698949 A CN 102698949A
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Abstract
The invention provides a preparation method of a vertical texture colorful board as well as a colorful board manufactured by using the preparation method, and solves the problem that the conventional colorful coating steel board has relatively poor surface anti-scratching capability and simple appearance effect. According to the technical scheme, the preparation method of the vertical texture colorful board comprises the following process steps of: manufacturing a substrate, degreasing, washing with water, carrying out chemical treatment on the surface of a steel board, roasting the surface of the steel board, coating primer on the surface of the steel board, curing the primer at a high temperature, and coating finish paint on the surface of the steel board; and meanwhile, coating back paint on the back surface of the steel board, drying the finish paint at the high temperature, and adhering a protection film on the front surface of the steel board. The invention further provides the colorful board manufactured by using the preparation method. The surface of the vertical texture colorful board has the advantages of high rigidity, high scoring resistance and high scratching resistance, and can be used for products with the high scoring resistance and the high scratching resistance, such as a refrigerator and an air conditioner. With the adoption of the preparation method of the vertical texture colorful board, the fingerprint resistance is improved, so that the 3D (three-dimensional) vertical texture effect is realized. Therefore, the vertical texture colorful board meets various requirements of a user in the market.
Description
Technical field
The invention belongs to the metallic plate field of usefulness such as household appliances shell, building internal and external ornament, specifically, the colored steel that relates to a kind of preparation method of vertical line skin texture colored steel and adopt this preparation method to make.
Background technology
At present colored steel (being color coated steel sheet) is mainly used on the products such as outer case of refrigerator, refrigerator side plate, microwave oven shell, air conditioner casing, washing machine shell, and it mainly is that coating through on steel plate, applying various different colours is to meet the requirement of consumer to product appearance, quality that the traditional PCM colored steel adopts traditional finish paint coating.The preparation method adopts traditional two roller coat coating process; Produce through primer coating, back of the body lacquer and finish paint at substrate surface; But the surfacing of conventional P CM colored steel is smooth, has that surperficial scratch resistance ability is relatively poor, appearance is single, and case hardness is low; Scratch resistance is low with the anti-performance of scratching, and can not satisfy market user's diversified demand.
Summary of the invention
The colored steel that the invention provides a kind of preparation method of vertical line skin texture colored steel and adopt this preparation method to make can solve the problem that surperficial scratch resistance ability is relatively poor, appearance is single of existing color coated steel sheet.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to be achieved:
A kind of preparation method of vertical line skin texture colored steel; Comprise following technological process: substrate → degreasing → washing → surface of steel plate chemical treatment → surface of steel plate baking → surface of steel plate primer → priming paint hot setting → surface of steel plate coating finish paint, the back of the body of back side coating simultaneously lacquer → finish paint high temperature drying → front pasting protective film.
Further, said technological process specifically comprises the steps:
(1) substrate is moved to the unwinding device place, the air pressure of control unwinding device is 5-7kg/cm
3, oil pressure is at 65-75kg/cm
3, whole linear speed: 38-42m/min;
(2) substrate pre-treatment: substrate passes through washing step and passivation procedure then through the twice degreasing process;
The degreasing process parameter is following:
The first road degreasing process, degreaser concentration 15-17pt, temperature 55-60 ℃;
The second road degreasing process, degreaser concentration 15-17pt, temperature 55-60 ℃;
Steam pressure 0.6-0.7MPa, spray pressure 1.5-2.0kgf/cm
2
Washing step, parameter setting: spray pressure 1.5-2.0kgf/cm
2, scrub the water water temperature: normal temperature, rinsing bowl water temperature: 55-65 ℃; Pure water pH value 5.8-6.8, conductance<10uscm
2
Passivation procedure, promptly handle at the surface of steel plate chemical treatments: passivator concentration 8.0-10.0pt, 30-45 ℃ of passivation header board temperature, passivation oven dry plate temperature PMT (baking oven): 60-70 ℃, pressure: 1.6-2.1kgf/cm
2The pressure here is meant roll-in, is exactly the suffered pressure of steel plate.Passivator is under certain condition, can act on the metal surface through it and form one deck dense oxidation film (passivating film), with the chemical agent of the antiseptic power that strengthens metal.
(3) get into the coating painting process, the substrate after the passivation through two layers of application chamber primer coating and back of the body lacquer, gets into oven for drying earlier afterwards, and the application chamber parameter is provided with as follows,
Priming paint (98301 white background): former lacquer viscosity 100s, last machine viscosity 65s, rotating ratio applicator roll 16: carry material roller 63, wet coating thickness 45um, dried film thickness 7um, PMT 224-232 ℃, oven temperature: 275 ℃;
Back of the body lacquer (R-90 is greyish white): former lacquer viscosity 110s, last machine viscosity 40s, rotating ratio is carried material roller 62: applicator roll 15, wet coating thickness 40um, dried film thickness 6um, PMT 216, oven temperature: 350 ℃;
The sheet material of drying bottom paint and back of the body lacquer gets into one deck application chamber and applies finish paint (quartzy red), adopts the reverse coating processes of three rollers to apply finish paint, and three rollers comprise applicator roll, carry material roller and backing roll; After being coated in finish paint above the priming paint, again through oven for drying, its parameter is set to: former lacquer viscosity 147s; Last machine viscosity 75s, rotating ratio 5:70:48, wet coating thickness 65um; Dried film thickness 38um, PMT 232-240 ℃, 360 ℃ of oven temperatures;
(4) overlay film rolling, pressure: 0.6kgf/cm
2, thickness 0.05mm.
Pt is the concentration unit pint; PMT is a baking oven.
Backing roll in the reverse coating processes of three rollers is claimed dancer rools again, in the process that applies finish paint coating, improves painting effect through backing roll, makes the coating coating flatness of substrate surface promote greatly, is superior to two roller coat coating process; Backing roll makes vertical line coating be coated with more uniformly and is contained in substrate surface, makes coating thickness even; And backing roll the problem that can reduce coating surface levelability difference is set; Backing roll can be controlled the thickness of filming.
A kind of vertical line skin texture colored steel comprises substrate, scribbles the chemical treatment layer on the tow sides of said substrate, the top primer coating layer of superincumbent chemical treatment layer, the following coating back of the body enamelled coating of following chemical treatment layer, coated side enamelled coating on said prime coat.
Said top coat layer adopts the mylar system, and the prescription and the weight portion of said mylar system are following: mylar 55-65 part; Amino resins 12-18 part; Acid catalyst 6-10 part; Not siliceous polymer 7-9 part; Solvent 8-12 part.
Through using the coating after improveing; Main component is a mylar; Contain amino resins and polyurethane resin simultaneously; Coating molecule after the improvement is through high-temperature baking, and molecular structure shrinks link and produces special grains, and said vertical line effect is meant the lines of under the high-temperature baking environment, realizing the corresponding effect that the contraction on-link mode (OLM) produces according to the coating molecular structure.
Further, said substrate adopts cold-reduced sheet, heat zinc coating plate, electrolytic galvanized sheet, zinc-iron alloy plate or aluminium alloy plate.
Further, said top coat layer above be provided with the PE diaphragm.
Its preparation process according to the invention can make convenient operation and control coating layer thickness in actual production process; Thereby when applying the baking of sheet material entering baking oven, the coating molecular structure passes through to shrink link, the vertical line textural effect of 3D that reaches and realize ideal; Coating color is more even; The sheet material of producing is in test and to add machinery and the chemical property of coating each item in man-hour more stable, the especially lifting of the case hardness and the scratch resistance ability on surface, life of product prolongation; Widely applicable, satisfied market user's diversified demand.
The vertical line skin texture color coated steel sheet of 3D is also to pass through the reverse coating processes of three rollers through the mylar system material that uses improvement behind hyperthermia drying as medium; The coating molecular structure forms the special-effect that has texture through shrinking link; Strengthening the scratch resistance performance of colored steel scratches performance and makes appearance variation more with resisting; Following environmental protection demand is satisfied in development aspect the reduction environmental pollution especially.
Cover through on substrate, carrying out three roller coat; Coating is through behind the hyperthermia drying; The coating molecular structure passes through to shrink link, increases the scratch resistance ability of coating surface, is implemented in the special-effect outward appearance that the sliding PCM product of conventional flat lay the grain has the vertical line skin texture of 3D simultaneously; Satisfied market user's diversified demand, appearance property is more stable.
A. the mylar system material that adopts improvement is as medium, and coating is through behind the hyperthermia drying, and the coating molecular structure increases the scratch resistance ability and the anti scuffing performance of coating surface through shrinking link.
B. adopt the structure of finish paint (quartzy red vertical line finish paint)+priming paint (white)+positive chemical treatment layer+substrate+back side chemical treatment layer+back of the body enamelled coating, realize producing the special-effect that has the vertical line skin texture of 3D through the reverse coating processes of three rollers.
C. better than conventional P CM colored steel resistance to marring ability, case hardness is high, and performance is more stable, and outward appearance is more attractive in appearance.
D. realize having the particular appearance effect of the vertical line skin texture of 3D, have more advantage and selectivity than traditional PCM colored steel appearance property and surface effect diversity.
Coating production technology: use zinc-plated substrate; Remove diaphragm or protection sheet; Through the degreasing and the washing step section of colored steel line, coating passivation chemical treatment layer is after the drying continuously; Adopt the mode of reverse coating evenly to be coated with the priming paint of hot setting (216 ℃ ﹤ PMT ﹤ 224 ℃); Solidify the cooling back and guarantee build, then adopt the mode of reverse coating evenly to be coated with the mylar finish paint that hot setting (232 ℃ >=PMT >=216 ℃) is improved, solidify the cooling back and guarantee that build is at 25-30um at 6-8um.
Use three roller coat to cover the mylar system material of improveing as medium; Its main component is a polyester; Contain amino resins and polyurethane resin simultaneously, thereby make coating through behind the hyperthermia drying, the coating molecular structure is through shrinking link; The special-effect that has the vertical line skin texture of 3D is produced in realization, then passes through pasting protective film or protection sheet, rolling.
Substrate covers the mylar system coating after the improvement through three roller coat, and the coating molecular structure realizes having the hang down outward appearance of special-effect of line skin texture of 3D through shrinking link.
Product colour of the present invention can design according to different demands;
3D hangs down that line skin texture colored steel has excellent damage resistant, scratches, chemical proofing, decay resistance and good hardness, can satisfy as machine-shaping requirement and the protective action of appliance shell with material.
The performance comparison of vertical line skin texture color coated steel sheet of the present invention and common PCM colored steel:
Compared with prior art, advantage of the present invention and good effect are:
Vertical line mechanism color coated steel sheet according to the invention; Keeping beyond the sheet material traditional performance, through using the mylar system material of improveing as medium, coating is through behind the hyperthermia drying; The coating molecular structure is through shrinking link; The scratch resistance ability of increase coating surface realizes the vertical line textural effect of 3D on the sliding PCM surface of conventional flat lay the grain simultaneously, has satisfied market user's diversified demand.
3D hangs down line skin texture colored steel at the polyester coating materials that adopts on the substrate after three roller coat cover priming paint and improvement; Reach the vertical line textural effect of 3D, product surface hardness is high, and performance is more stable; Anti-finger printing; Scratch resistance is better with the anti-performance of scratching, and convenient popularization in enormous quantities can be used for high scratch resistances such as refrigerator, air-conditioning, anti-scratching property product.
Adopt the structure of topcoat+primer coating+chemical treatment layer+substrate.Through developing special polyester coatings, and then development quality is stable, and the finishing coat that adhesive force is good is broken through conventional P CM smooth surface, and quality control more easily, surperficial damage resistant and the performance of scratching, is convenient to market user selection and product lot quantity is promoted the use of.
Adopt three roller coat to cover treatment technology, broken through the surface-limited of conventional P CM, realize the lines effect, and can reach the vertical line colored steel of different colours through various colors, and environmental protection.This novel colored steel belongs to innovative product in the colored steel production industry, realizes that in material chosen and technology great innovation is all arranged, and belongs to completely new product.
Description of drawings
Fig. 1 is the schematic cross-section of vertical line skin texture colored steel according to the invention;
Fig. 2 is the reverse coating processes sketch mapes of three rollers of the present invention;
Symbol among the figure and explanation thereof:
1, substrate; 2, chemical treatment layer; 3, white primer layer; 4, back of the body enamelled coating; 5, top coat layer; 6, applicator roll; 7, carry material roller; 8, backing roll; 9, coating pallet; 10, steel rod;
The direction of rotation of each roller is shown in arrow among the figure among the figure.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
As shown in Figure 1, a kind of vertical line skin texture colored steel comprises substrate 1; On the front of substrate 1, be followed successively by chemical treatment layer 2 from the bottom to top, white primer layer 3; Top coat layer 5 on the back side of substrate 1, is followed successively by chemical treatment layer 2, back of the body enamelled coating 4 from top to bottom; Said top coat layer 5 is quartzy red vertical line finish paints, adopts the mylar system.
Said top coat layer adopts the mylar system, and the prescription and the weight portion of said mylar system are following: 60 parts in mylar; 15 parts in amino resins; 8 parts of acid catalysts; 8 parts in not siliceous polymer; 9 parts of solvents.
This color coated steel sheet has the case hardness height, scratch resistance and the anti-stable performance of scratching.
On top coat layer 5, also can be provided with the PE diaphragm.
A kind of preparation method of vertical line skin texture colored steel specifically comprises the steps:
(1) substrate 1 is moved to the unwinding device place, the air pressure of control unwinding device is 5-7kg/cm
3, oil pressure is at 70kg/cm
3, whole linear speed: 40m/min;
(2) substrate pre-treatment: substrate passes through washing step and passivation procedure then through the twice degreasing process;
The degreasing process parameter is following:
The first road degreasing process, degreaser concentration 15-17pt, temperature 55-60 ℃;
The second road degreasing process, degreaser concentration 15-17pt, temperature 55-60 ℃;
Steam pressure 0.6-0.7MPa, spray pressure 1.5-2.0kgf/cm
2
Washing step, parameter setting: spray pressure 1.5-2.0kgf/cm
2, scrub the water water temperature: normal temperature, rinsing bowl water temperature: 55-65 ℃; Pure water pH value 5.8-6.8, conductance<10uscm
2
Passivation procedure is promptly handled at the surface of steel plate chemical treatments: passivator concentration 8.0-10.0pt, passivation header board temperature>30 ℃, PMT:65 ℃ of passivation oven dry plate temperature, pressure: 1.6-2.1kgf/cm
2
(3) get into the coating painting process, the substrate after the passivation through two layers of application chamber primer coating and back of the body lacquer, gets into oven for drying earlier afterwards, and the application chamber parameter is provided with as follows,
Priming paint (98301 white background): former lacquer viscosity 100s, last machine viscosity 65s, rotating ratio 16:63, wet coating thickness 45um, dried film thickness 7um, PMT 224-232 ℃, oven temperature: 275 ℃;
Back of the body lacquer (R-90 is greyish white): former lacquer viscosity 110s, last machine viscosity 40s, rotating ratio 62:15, wet coating thickness 40um, dried film thickness 6um, 216 ℃ of PMT, oven temperature: 350 ℃;
The sheet material of drying bottom paint and back of the body lacquer gets into one deck application chamber and applies finish paint (quartzy red), adopts the reverse coating processes of three rollers to apply finish paint, and three rollers comprise applicator roll 6, carry material roller 7 and backing roll 8; The 9th, the coating pallet, the 10th, steel rod, be coated in finish paint above the priming paint after, again through oven for drying; Its parameter is set to: former lacquer viscosity 147s, last machine viscosity 75s, rotating ratio 5:70:48, wet coating thickness 65um; Dried film thickness 38um, PMT 232-240 ℃, 360 ℃ of oven temperatures;
(4) overlay film rolling, pressure: 0.6kgf/cm2, thickness 0.05mm.
Through this quartzy red coating; Film coated surface is the process that changes to solid film state truly from liquid state; Specifically be provided with through the reverse coating of three rollers, oven temperature; Thereby make the amino molecule of introducing in this polyester coating form a kind of polymer chain that do not dissolve, solidify moment to make to film and itself form the pattern cracking effect, obtain 3D skin texture colored steel through coating, heat cure.
As shown in Figure 2, in the reverse coating processes sketch map of three rollers, from Fig. 2, can find out that the substrate motion direction is upwards, but the coating direction of applicator roll 6 and substrate 1 direction are opposite, so, be called reverse coating; And what produce that other products adopt all is that clockwise direction applies.
The vertical line skin texture colored steel of 3D adopts the reverse coating processes of three rollers and uses the mylar system material of improveing as medium; Coating is through behind the hyperthermia drying; The coating molecular structure forms the special-effect that has texture through shrinking link, and the line skin texture colored steel that hangs down has excellent damage resistant, scratches, chemical proofing, decay resistance and good hardness.
Therefore, this its preparation process can make convenient operation and control coating layer thickness in actual production process, thereby when applying the baking of sheet material entering baking oven; The coating molecular structure is through shrinking link; The 3D that reaches and the realize ideal line textural effect that hangs down, coating color is more even, and the sheet material of producing is in test and to add the machinery and the chemical property of coating each item in man-hour more stable; Especially the lifting of the case hardness and the scratch resistance ability on surface; Life of product prolongs, and is widely applicable, satisfied market user's diversified demand.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.
Claims (9)
1. the preparation method of a vertical line skin texture colored steel; It is characterized in that comprising following technological process: substrate → degreasing → washing → surface of steel plate chemical treatment → surface of steel plate baking → surface of steel plate primer → priming paint hot setting → surface of steel plate coating finish paint, the back of the body of back side coating simultaneously lacquer → finish paint high temperature drying → front pasting protective film.
2. preparation method according to claim 1 is characterized in that said technological process specifically comprises the steps:
(1) substrate is moved to the unwinding device place, the air pressure of control unwinding device is 5-7kg/cm
3, oil pressure is at 65-75kg/cm
3, whole linear speed: 38-42m/min;
(2) substrate pre-treatment: substrate passes through washing step and passivation procedure then through the twice degreasing process; Passivation procedure is promptly handled at the surface of steel plate chemical treatments: passivator concentration 8.0-10.0pt, 30-45 ℃ of passivation header board temperature, PMT:60-70 ℃ of passivation oven dry plate temperature, pressure: 1.6-2.1kgf/cm
2
(3) get into the coating painting process, the substrate after the passivation through two layers of application chamber primer coating and back of the body lacquer, gets into oven for drying earlier afterwards; The sheet material of drying bottom paint and back of the body lacquer gets into one deck application chamber and applies finish paint; Adopt the reverse coating processes of three rollers to apply finish paint, three rollers comprise applicator roll, carry material roller and backing roll; After being coated in finish paint above the priming paint, again through oven for drying;
(4) overlay film rolling, pressure: 0.5-0.7kgf/cm
2, thickness 0.03-0.05mm.
3. preparation method according to claim 2; It is characterized in that: the parameter that applies finish paint in the step (3) is set to: former lacquer viscosity 142-152s, last machine viscosity 70-80s, rotating ratio backing roll 5: carry material roller 70: applicator roll 48; Wet coating thickness 60-70um; Dried film thickness 25-30um, PMT 232-240 ℃, oven temperature 355-365 ℃.
4. preparation method according to claim 2 is characterized in that: degreasing process and washing step parameter in the step (2) are following:
The first road degreasing process, degreaser concentration 15-17pt, temperature 55-60 ℃;
The second road degreasing process, degreaser concentration 15-17pt, temperature 55-60 ℃;
Steam pressure 0.6-0.7MPa, spray pressure 1.5-2.0 kgf/cm
2
Washing step, parameter setting: spray pressure 1.5-2.0 kgf/cm
2, scrub the water water temperature: normal temperature, rinsing bowl water temperature: 55-65 ℃; Pure water pH value 5.8-6.8, conductance<10uscm
2
5. preparation method according to claim 2 is characterized in that: when primer coating was with back of the body lacquer in the step (3), the application chamber parameter was provided with as follows,
Priming paint: former lacquer viscosity 95-105s, last machine viscosity 60-70s, rotating ratio applicator roll 16: carry material 63, wet coating thickness 42-48um, dried film thickness 6-8um, PMT 224-232 ℃, oven temperature: 270-280 ℃;
Back of the body lacquer: former lacquer viscosity 105-115s, last machine viscosity 35-45s, rotating ratio is carried material roller 63: applicator roll 16, wet coating thickness 38-42um, dried film thickness 6-8um, PMT 214-218 ℃, oven temperature: 340-360 ℃.
6. vertical line skin texture colored steel; Comprise substrate, it is characterized in that: scribble the chemical treatment layer on the tow sides of said substrate, the top primer coating layer of superincumbent chemical treatment layer; The following coating back of the body enamelled coating of following chemical treatment layer, coated side enamelled coating on said prime coat.
7. according to the said colored steel of claim 6, it is characterized in that: said top coat layer adopts the mylar system, and the prescription and the weight portion of said mylar system are following: mylar 55-65 part; Amino resins 12-18 part; Acid catalyst 6-10 part; Not siliceous polymer 7-9 part; Solvent 8-12 part.
8. according to the said colored steel of claim 6, it is characterized in that: said substrate adopts cold-reduced sheet, heat zinc coating plate, electrolytic galvanized sheet, zinc-iron alloy plate or aluminium alloy plate.
9. according to the said colored steel of claim 6, it is characterized in that: be provided with the PE diaphragm above the said top coat layer.
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Qingdao, Shandong. Co-patentee after: QINGDAO HBIS COMPOSITE NEW MATERIAL TECHNOLOGY CO.,LTD. Patentee after: HEFEI HAIER SPECIAL STEEL PLATE RESEARCH & DEVELOPMENT Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Qingdao, Shandong. Co-patentee before: QINGDAO HAIER SPECIAL STEEL PLATE RESEARCH AND DEVELOPMENT Co.,Ltd. Patentee before: HEFEI HAIER SPECIAL STEEL PLATE RESEARCH & DEVELOPMENT Co.,Ltd. |
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Effective date of registration: 20180530 Address after: 230601 200 prosperous road, Hefei economic and Technological Development Zone, Anhui Patentee after: HEFEI HEGANG NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Qingdao, Shandong. Co-patentee before: QINGDAO HBIS COMPOSITE NEW MATERIAL TECHNOLOGY CO.,LTD. Patentee before: HEFEI HAIER SPECIAL STEEL PLATE RESEARCH & DEVELOPMENT Co.,Ltd. |