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Precoated metal plate and manufacturing method thereof

A metal plate and pre-coating technology, which is applied in the direction of metal layered products, chemical instruments and methods, coatings, etc., can solve the problems of poor coating processing performance, great influence on film clarity, coating cracking, etc. , to save energy and equipment length, good transparency and mirror effect, smooth coating surface

Inactive Publication Date: 2017-05-10
青岛河钢复合新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of varnish spraying process requires the use of spray guns to spray paint, which is wasteful, and there will be a lot of varnish and solvent pollution in the environment, and it needs a long oven for high temperature baking, and the production efficiency is low.
The varnish flow coating process is used, the process is complicated and the yield rate is low, and the coating thickness of the flow coating equipment is generally greater than 30 μm, resulting in a high degree of surface clarity, but the processing performance of the coating is not good, and the metal plate is bent and stretched. Coating Cracking Defect Appears
The metal plate filming process generally adopts PET / PVC composite film process, but the cost of high-quality composite color film is very high, and it is easy to produce orange peel during the film covering process, which has a great impact on the vividness of the film layer.
The orange peel pattern of the coated metal plate is greatly affected by technical parameters such as the roughness of the substrate, the heat resistance of the PVC film, and the pressure of the coating, and it is difficult to control

Method used

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  • Precoated metal plate and manufacturing method thereof
  • Precoated metal plate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A pre-coated metal plate, the front side includes a metal substrate 10 and a chemical treatment layer 20, a solvent-based coating 30, a first UV coating 40, and a transfer pattern attached to the metal substrate 10 in sequence from bottom to top 50 , the second UV coating 60 and the protective film 70 . The backside comprises a chemical treatment layer 20 and a backside paint 80 .

[0053] The metal substrate 10 is a hot-dip galvanized substrate, the chemical treatment layer 20 is a chrome-free chemical treatment layer, the solvent-based coating 30 is a white polyester coating, and the first UV coating 40 is a transparent UV coating, the transfer pattern 50 adopts thermal curing ink transfer pattern, the second UV coating 60 adopts a transparent UV coating, the protective film 70 adopts a PE protective film, and the back paint 80 adopts a gray back paint.

[0054] The main components of the first UV coating 40 are 60% of polyurethane acrylate prepolymer, 30% of acryla...

Embodiment 2

[0059] A pre-coated metal plate, the front side includes a metal substrate 10 and a chemical treatment layer 20, a solvent-based coating 30, a first UV coating 40, and a transfer pattern attached to the metal substrate 10 in sequence from bottom to top 50. Second UV coating 60.

[0060] The metal substrate 10 is a stainless steel metal plate, the chemical treatment layer 20 is a chrome-free chemical treatment layer, the solvent-based coating 30 is a transparent polyester coating, and the first UV coating 40 is a transparent UV coating. layer, the transfer pattern 50 adopts UV-curable ink to transfer the pattern, and the second UV coating 60 adopts a transparent UV coating. The main components of the transparent polyester coating are 70% of saturated polyester resin, 8% of epoxy resin, 10% of amino resin, 11% of solvent, 0.7% of leveling and defoaming agent, and 0.3% of catalyst, all in percentage by weight, A small amount of color paste can be added.

[0061]The main compone...

Embodiment 3

[0065] A precoated metal plate, the front side includes a metal substrate 10 and a chemical treatment layer 20 attached to the metal substrate 10 from bottom to top, a solvent-based primer 31, a solvent-based mid-coat 32, a first UV coating 40 and protective film 70 . The back contains a chemical treatment layer 20 and a gray back paint 80 such as figure 2 .

[0066] The metal substrate 10 adopts a hot-dip galvanized substrate, the chemical treatment layer 20 adopts a chromium-free chemical treatment layer, the solvent-based primer layer 31 adopts a white polyester primer layer, and the solvent-based middle coat layer 32 adopts Black polyester middle coating, the first UV coating 40 adopts transparent UV coating, the protective film 70 adopts PE protective film, and the described back paint 80 adopts gray back paint.

[0067] Described white polyester undercoat is used for improving the corrosion resistance of hot-dip galvanized substrate, and improves and the adhesive forc...

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Abstract

The invention discloses a precoated metal plate and a manufacturing method thereof. The precoated metal plate sequentially comprises a metal substrate, a solvent type coating and a second UV (Ultraviolet) coating from bottom to top, or sequentially comprises the metal substrate, the solvent type coating, a first UV coating, a transfer printing pattern and the second UV coating from bottom to top. The manufacturing method comprises the following steps: enabling a metal coiled tape with the solvent type coating to sequentially enter an uncoiling procedure I, a surface cleaning procedure II, a first UV glue coating procedure III, a transfer printing membrane laminating procedure IV, a first ultraviolet light curing procedure V and a transfer printing membrane tearing procedure VI, wherein the transfer printing membrane laminating procedure IV adopts an unpatterned transparent transfer printing membrane or a plastic transfer printing membrane with a pattern; sequentially entering a second UV glue coating procedure VII, a second ultraviolet light curing procedure VIII, a protective film pasting and covering procedure IX and a coiling procedure X, thus obtaining the precoated metal plate. The invention provides the precoated metal plate with abundant colors, processability and high distinctness; the precoated metal plate has excellent brightness, transparency and mirror surface effect.

Description

technical field [0001] The invention belongs to the technical field of production and manufacturing of metal plates for household appliances, building materials, automobiles and furniture, and in particular relates to a pre-coated metal plate and a manufacturing method thereof. Background technique [0002] There are two methods of pre-painted metal plate coating process, one is the post-coating method of coating after the product sheet metal is formed; the other is to coat the metal plate or metal strip before the sheet metal is formed pre-coating method. The pre-painted metal sheet has good sheet metal forming processability, saves the user's painting process, and helps to improve production efficiency and reduce costs. Pre-painted metal sheets are more and more widely used in the fields of home appliances, construction and automobiles, and the demand for artistic appearance with high brightness and rich appearance patterns is also increasing. However, the ordinary pre-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/085B32B15/09B32B15/18B32B15/20B32B27/32B32B27/36C09D167/00C09D175/04C09D175/14C09D7/12
CPCB32B15/085B32B15/09B32B15/18B32B15/20B32B27/32B32B27/322B32B27/36B32B2255/06B32B2255/26B32B2255/28B32B2307/406B32B2307/409B32B2457/00B32B2479/00B32B2605/08C09D7/63C09D167/00C09D175/04C09D175/14
Inventor 赵秀娟邹炎斌付强殷浩范入豪周同春代玉江周忠珊
Owner 青岛河钢复合新材料科技有限公司
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