Precoated metal plate

A metal plate and pre-coating technology, which is applied in the direction of metal layered products, metal material coating process, coating, etc., can solve the problem of damage to optical discs, and achieve the effect of good bonding force, high peel strength, and excellent formability

Inactive Publication Date: 2009-03-11
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the resin ball disclosed in Patent Document 2 is a relatively hard material called acrylic or fluororesin, it will inevitably damage the optical disc wh

Method used

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Examples

Experimental program
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Effect test

Example

[0100] (Examples 1-12)

[0101] As Examples 1-12, a pre-coated metal plate was produced according to the manufacturing method described above. The respective constitutions of the pre-coated metal plate are as follows.

[0102] (Metal plate)

[0103] Use a 5052-H34 aluminum alloy plate with a thickness of 0.5mm and JIS regulations.

[0104] (Corrosion resistant coating)

[0105] A chromate phosphate film is formed on both sides of the aluminum alloy plate. The adhesion amount of the phosphate chromate film is 20mg / m in terms of Cr 2 .

[0106] (Resin film)

[0107] The outermost surface of the chromate phosphate film is coated with an epoxy-based paint dispersed with soft pellets and tetrafluoroethylene powder having the compressive strength specified in the present invention at 10% deformation, and the sintering temperature (metal plate The highest temperature) is sintered at 250°C to form a resin film (fluorine-based resin base layer). Here, as the soft pellets, urethane pellets ...

Example

[0109] (Comparative Examples 1-12)

[0110] As a control of Examples 1 to 12, precoated metal sheets of Comparative Examples 1 to 12 were produced. Comparative example 1 is the case of using epoxy-based paint that does not contain soft beads; Comparative Examples 2 and 3 are cases where the content of soft beads does not meet the scope of the claims of the present invention; Comparative Examples 4 and 5 are The relationship between the average particle size of the soft pellets and the average thickness of the epoxy resin base layer does not meet the scope of the claims of the present invention; Comparative Examples 6 and 7 are for increasing the added amount of tetrafluoroethylene powder The result is that the ratio of the fluorine concentration on the outermost surface of the film does not meet the scope of the claims of the present invention; Comparative Examples 8 and 9 are the cases where the type of resin base layer and epoxy-based paint are used; Comparative Example 10 is th...

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PUM

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Abstract

This invention provides a precoated metal plate that can prevent the occurrence of defects in an optical disk, and, at the same time, can maintain high peel strength of an adherend to a resin film, and can realize easy adhesion of the adherend to the surface of the resin film. The precoated metal plate comprises a metal plate and a resin film provided on the surface of the metal plate. The resin film comprises an epoxy resin matrix layer and soft beads dispersed in the epoxy resin matrix layer. For the soft beads, the compressive strength at single bead 10% deformation by a microcompression test is not more than 10 MPa. The content of the soft beads is not less than 5% by mass and not more than 50% by mass based on the epoxy resin matrix layer, and the average particle diameter of the soft beads is not less than 1.1 times and not more than 5 times the average thickness of the epoxy resin matrix layer.

Description

technical field [0001] The present invention relates to a precoated metal sheet, which is suitable for exterior sheet materials and components such as home appliances and automotive vehicle parts, as well as building materials and roofing materials. Background technique [0002] Metal sheets (metal sheets) represented by steel sheets, aluminum sheets, or aluminum alloy sheets have both high strength and workability, and can be applied to home appliances, automotive parts, and building materials through various processing Various uses. Processed products of metal plates suitable for these uses are sometimes subjected to surface treatment for the purpose of improving appearance, corrosion resistance, and the like. At present, the mainstream of this surface treatment is the post-coat method of processing the metal plate into a predetermined shape and then performing surface treatment. However, recently, it is aimed at improving the factory environment, simplifying the processi...

Claims

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Application Information

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IPC IPC(8): B32B15/08B32B15/092C09D5/08C09D7/12C09D127/18C09D163/00C09D163/02C09D175/04C23C30/00
CPCC09D5/08C09D175/04B05D7/14C23C30/00C09D163/00B05D2401/32
Inventor 服部伸郎
Owner KOBE STEEL LTD
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