CN111873572A - Heat transfer printing color coating steel plate and production process - Google Patents

Heat transfer printing color coating steel plate and production process Download PDF

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Publication number
CN111873572A
CN111873572A CN202010846972.8A CN202010846972A CN111873572A CN 111873572 A CN111873572 A CN 111873572A CN 202010846972 A CN202010846972 A CN 202010846972A CN 111873572 A CN111873572 A CN 111873572A
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China
Prior art keywords
layer
steel plate
heat transfer
coating
drying
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Pending
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CN202010846972.8A
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Chinese (zh)
Inventor
黄雄白
周忠亮
刘凯
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Suzhou Xingheyuan Composite Materials Co ltd
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Suzhou Xingheyuan Composite Materials Co ltd
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Priority to CN202010846972.8A priority Critical patent/CN111873572A/en
Publication of CN111873572A publication Critical patent/CN111873572A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B32B38/145—Printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/162—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0016—Abrading
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B32B2038/166—Removing moisture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a heat transfer printing color coating steel plate which comprises a base layer, wherein a first primer layer and a second primer layer are respectively arranged on two sides of the base layer, a finish paint layer is arranged on the first primer layer, a heat transfer printing layer is arranged on the finish paint layer, a waterproof layer is arranged on the heat transfer printing layer, and a wear-resistant layer is arranged on the waterproof layer. Can avoid whole plate to receive the erosion of aqueous vapor in the regional use of moisture through the waterproof layer, the wearing layer can improve the anticollision and the resistant bad performance of plate.

Description

Heat transfer printing color coating steel plate and production process
Technical Field
The invention belongs to the technical field of heat transfer printing steel plates, and particularly relates to a heat transfer printing color coating steel plate and a production process thereof.
Background
The thermal transfer printing is a new printing process, which is not transmitted from abroad for more than 10 years, and the printing mode of the process is divided into two parts of transfer printing and transfer printing processing.
In the decoration industry, steel plates are common building materials, have enough strength, can be selected according to actual needs, and have stronger durability and pressure resistance compared with conventional wood materials.
Along with the development of steel sheet processing, traditional drawing is replaced gradually to the heat-transfer seal steel sheet and is glued the steel sheet, but, present heat-transfer seal steel sheet, protection architecture is simple, still exists the lack in the aspect of collision protection and water proofness.
Disclosure of Invention
The invention aims to provide a heat transfer printing color coating steel plate and a production process thereof, which aim to solve the problem of protection of the heat transfer printing steel plate.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a colored coating steel sheet of heat-transfer seal, includes the basic unit, the both sides of basic unit are provided with first primer layer and second primer layer respectively, be provided with first priming paint layer on the first primer layer, be provided with the second priming paint layer on the second primer layer, be provided with finish paint layer on the first priming paint layer, be provided with the heat-transfer seal layer on the finish paint layer, be provided with the waterproof layer on the heat-transfer seal layer, be provided with the wearing layer on the waterproof layer.
Preferably, the first and second coatings are chemical conversion coatings, both coatings are made of a chromium-free passivation solution by painting, and the thickness of the chromium-free passivation solution coating is 6-8 microns, so that the two sides of the steel plate are protected from oxidation and the roller coating adhesion of a paint layer is improved.
Preferably, the first and second primer layers 14 have a viscosity of 15 "-25" and are most widely formulated with high viscosity primers, i.e., primers having a relatively high viscosity at a concentration measured by a viscosity cup and a stopwatch, the higher the second count.
Preferably, the waterproof layer is made of polyethylene material and has a thickness of 0.2 mm to 0.4 mm, so as to avoid being corroded by moisture when the waterproof layer is used in a wet area.
Preferably, the wear-resistant layer is made of polyvinyl chloride materials, the thickness of the wear-resistant layer is 0.3 mm to 0.6 mm, the wear-resistant and anti-collision effect is achieved, and the service life of the whole plate can be greatly prolonged.
The production process comprises the following steps:
the first step is as follows: selecting a stainless steel plate as a base layer, wherein the thickness of the stainless steel plate is controlled to be between 0.5 mm and 1.5 mm;
the second step is that: leveling the surface of the steel plate by a grinding machine;
the third step: cleaning the steel plate by using cleaning fluid, and then washing by using clean water;
the fourth step: drying the steel plate through a drying chamber;
the fifth step: after drying, entering a chemical coating chamber to coat a chromium-free passivation solution on the two sides of the steel plate;
and a sixth step: respectively coating priming paint on the two chemical coatings through a roller coating process, coating finish paint on the first priming paint, and drying, wherein the drying temperature of the priming paint and the drying temperature of the finish paint are not more than 245 ℃ and not less than 210 ℃;
the seventh step: after the painted surface of the steel plate is dried, the steel plate is cleaned by cold water and enters a drying chamber again for drying;
eighth step: hot stamping patterns on the finish paint through a thermal transfer printing machine to finish the manufacture of a thermal transfer printing steel plate;
the ninth step: and after the surface layer of the thermal transfer printing steel plate is cooled, sequentially covering a waterproof layer and a wear-resistant layer on the surface layer through a film covering machine.
Preferably, the sander in the second step is a roller sander or a handheld sander, the roller sander can perform primary sanding on the whole, and the handheld sander can perform secondary sanding on a part.
Preferably, the cleaning solution in the third step is a neutral cleaning solution, so that the corrosion of the acidic or alkaline cleaning solution to the steel plate can be avoided.
Preferably, the drying chamber of the fourth step is formed by combining an assembled steel plate support container and a plurality of air heaters, the steel plate support is of a hollow structure, so that air flow can efficiently flow, and the air heaters can efficiently dry the air flow.
Compared with the prior art, the invention has the beneficial effects that: can avoid whole plate to receive the erosion of aqueous vapor in the regional use of moisture through the waterproof layer, the wearing layer can improve the anticollision and the resistant bad performance of plate.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a base layer; 11. a first normalized coating layer; 12. a second coating layer; 13. a first primer layer; 14. a second primer layer; 15. a finish paint layer; 16. a thermal transfer layer; 17. a waterproof layer; 18. and a wear-resistant layer.
Detailed Description
Referring to fig. 1, a thermal transfer color coated steel plate includes a base layer 1, a first primer layer 11 and a second primer layer 12 are respectively disposed on two sides of the base layer 1, the first primer layer 11 is disposed on the first primer layer 11, the second primer layer 12 is disposed on the second primer layer 14, a finish layer 15 is disposed on the first primer layer 13, a thermal transfer layer 16 is disposed on the finish layer 15, a waterproof layer 17 is disposed on the thermal transfer layer 16, and a wear-resistant layer 18 is disposed on the waterproof layer 17.
Referring to fig. 1, the first and second chemical coatings 11 and 12 are chemical conversion layers, both of which are made by painting a chromium-free passivation solution, and the thickness of the chromium-free passivation solution coating is 6-8 μm, so that both sides of the steel plate are protected from oxidation and the roller coating adhesion of the paint layer is improved.
Referring to fig. 1, the viscosity of the first primer layer 13 and the second primer layer 14 is 15 "-25", and most widely used primers can be formulated from high viscosity primers, which refers to primers with higher viscosity at a concentration measured by the viscosity cup and stopwatch, and with higher concentrations in seconds.
Referring to fig. 1, the waterproof layer 17 is made of polyethylene and has a thickness of 0.2 mm to 0.4 mm, so as to prevent the waterproof layer from being corroded by moisture when used in a wet area.
Referring to fig. 1, the wear-resistant layer 18 is made of polyvinyl chloride, has a thickness of 0.3 mm to 0.6 mm, has a wear-resistant and anti-collision effect, and can greatly prolong the service life of the whole plate.
The production process comprises the following steps:
the first step is as follows: selecting a stainless steel plate as a base layer, wherein the thickness of the stainless steel plate is controlled to be between 0.5 mm and 1.5 mm;
the second step is that: leveling the surface of the steel plate by a grinding machine;
the third step: cleaning the steel plate by using cleaning fluid, and then washing by using clean water;
the fourth step: drying the steel plate through a drying chamber;
the fifth step: after drying, entering a chemical coating chamber to coat a chromium-free passivation solution on the two sides of the steel plate;
and a sixth step: respectively coating priming paint on the two chemical coatings through a roller coating process, coating finish paint on the first priming paint, and drying, wherein the drying temperature of the priming paint and the drying temperature of the finish paint are not more than 245 ℃ and not less than 210 ℃;
the seventh step: after the painted surface of the steel plate is dried, the steel plate is cleaned by cold water and enters a drying chamber again for drying;
eighth step: hot stamping patterns on the finish paint through a thermal transfer printing machine to finish the manufacture of a thermal transfer printing steel plate;
the ninth step: and after the surface layer of the thermal transfer printing steel plate is cooled, sequentially covering a waterproof layer and a wear-resistant layer on the surface layer through a film covering machine.
The grinding machine in the second step is a roller type grinding machine or a handheld type grinding machine, the roller type grinding machine can carry out primary grinding on the whole, and the handheld type grinding machine can carry out secondary grinding on the part.
And the cleaning solution in the third step is neutral cleaning solution, so that the corrosion of acidic or alkaline cleaning solution to the steel plate can be avoided.
The drying chamber of fourth step is formed by an assembly steel sheet support container and many air heaters combination, and steel sheet support is hollow out construction for the air current can high-efficient flow, can carry out high-efficient stoving to it through the air heater.
The working principle of the scheme is as follows: selecting a stainless steel plate as a base layer, controlling the thickness of the stainless steel plate to be between 0.5 mm and 1.5 mm, leveling the surface of the steel plate through a polisher, cleaning the steel plate through cleaning liquid, washing the steel plate with clean water, drying the steel plate through a drying chamber, entering a chemical coating chamber to coat chromium-free passivation liquid on the two sides of the steel plate after drying, respectively coating priming paint on two chemical coatings through a roller coating process, coating top paint on a first priming paint, drying, wherein the drying temperature of the priming paint and the top paint is not more than 245 ℃ and not less than 210 ℃, washing the paint surface of the steel plate through cold water after drying, entering the drying chamber again to dry, hot-stamping patterns on the top paint through a thermal transfer machine, finishing the manufacture of the thermal transfer steel plate, and sequentially covering a waterproof layer and a wear-resistant layer on the surface layer through a film laminating machine after the surface of the thermal transfer steel plate is cooled.

Claims (9)

1. A heat transfer color coated steel sheet comprising a base layer (1), characterized in that: the both sides of basic unit (1) are provided with first coating (11) and second coating (12) respectively, be provided with first priming paint layer (13) on first coating (11), be provided with second priming paint layer (14) on second coating (12), be provided with finish paint layer (15) on first priming paint layer (13), be provided with heat transfer printing layer (16) on finish paint layer (15), be provided with waterproof layer (17) on heat transfer printing layer (16), be provided with wearing layer (18) on waterproof layer (17).
2. The heat transfer color coated steel sheet according to claim 1, wherein: the first chemical coating (11) and the second chemical coating (12) are chemical conversion coatings, and both are made by painting chromium-free passivation solution.
3. The heat transfer color coated steel sheet according to claim 1, wherein: the viscosity of said first primer layer (13) and said second primer layer (14) ranges from 15 'to 25'.
4. The heat transfer color coated steel sheet according to claim 1, wherein: the waterproof layer (17) is made of polyethylene materials, and the thickness of the waterproof layer is 0.2 mm-0.4 mm.
5. The heat transfer color coated steel sheet according to claim 1, wherein: the wear layer (18) is made of polyvinyl chloride material and has a thickness of between 0.3 mm and 0.6 mm.
6. The heat transfer color coated steel sheet according to claim 1, wherein: the production process comprises the following steps:
the first step is as follows: selecting a stainless steel plate as a base layer, wherein the thickness of the stainless steel plate is controlled to be between 0.5 mm and 1.5 mm;
the second step is that: leveling the surface of the steel plate by a grinding machine;
the third step: cleaning the steel plate by using cleaning fluid, and then washing by using clean water;
the fourth step: drying the steel plate through a drying chamber;
the fifth step: after drying, entering a chemical coating chamber to coat a chromium-free passivation solution on the two sides of the steel plate;
and a sixth step: respectively coating priming paint on the two chemical coatings through a roller coating process, coating finish paint on the first priming paint, and drying, wherein the drying temperature of the priming paint and the drying temperature of the finish paint are not more than 245 ℃ and not less than 210 ℃;
the seventh step: after the painted surface of the steel plate is dried, the steel plate is cleaned by cold water and enters a drying chamber again for drying;
eighth step: hot stamping patterns on the finish paint through a thermal transfer printing machine to finish the manufacture of a thermal transfer printing steel plate;
the ninth step: and after the surface layer of the thermal transfer printing steel plate is cooled, sequentially covering a waterproof layer and a wear-resistant layer on the surface layer through a film covering machine.
7. The heat transfer color coated steel sheet according to claim 6, wherein: the grinding machine in the second step is a roller type grinding machine or a handheld type grinding machine, the roller type grinding machine can be used for grinding for the first time integrally, and the handheld type grinding machine can be used for grinding for the second time locally.
8. The heat transfer color coated steel sheet according to claim 1, wherein: and selecting neutral cleaning liquid as the cleaning liquid in the third step.
9. The heat transfer color coated steel sheet according to claim 1, wherein: the drying chamber of the fourth step is formed by combining an assembled steel plate bracket container and a plurality of air heaters.
CN202010846972.8A 2020-08-21 2020-08-21 Heat transfer printing color coating steel plate and production process Pending CN111873572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010846972.8A CN111873572A (en) 2020-08-21 2020-08-21 Heat transfer printing color coating steel plate and production process

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Application Number Priority Date Filing Date Title
CN202010846972.8A CN111873572A (en) 2020-08-21 2020-08-21 Heat transfer printing color coating steel plate and production process

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CN111873572A true CN111873572A (en) 2020-11-03

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101077677A (en) * 2006-05-23 2007-11-28 海尔集团公司 Gravure rubber wheel directly transfer printing pattern metallic plate
CN102935744A (en) * 2012-11-30 2013-02-20 珠海拾比佰彩图板股份有限公司 Heat transfer printing color coated steel plate
CN104196196A (en) * 2014-09-05 2014-12-10 上海圣峰建材科技有限公司 Free-scrubbing composite decoration board used for ceiling and wall space and manufacturing technology of free-scrubbing composite decoration board
CN205100481U (en) * 2015-11-04 2016-03-23 陈伟 Radiation curing tectorial membrane decorative board

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101077677A (en) * 2006-05-23 2007-11-28 海尔集团公司 Gravure rubber wheel directly transfer printing pattern metallic plate
CN102935744A (en) * 2012-11-30 2013-02-20 珠海拾比佰彩图板股份有限公司 Heat transfer printing color coated steel plate
CN104196196A (en) * 2014-09-05 2014-12-10 上海圣峰建材科技有限公司 Free-scrubbing composite decoration board used for ceiling and wall space and manufacturing technology of free-scrubbing composite decoration board
CN205100481U (en) * 2015-11-04 2016-03-23 陈伟 Radiation curing tectorial membrane decorative board

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Application publication date: 20201103