Surface-treated metal sheets excellent in press dragging resistance and coil deformation resistance and process for producing the same
A surface treatment, metal plate technology, applied in chemical instruments and methods, special surfaces, metal layered products, etc., can solve the problems of broken coils, easy sliding of steel plate surfaces, etc.
Inactive Publication Date: 2008-02-13
NIPPON STEEL CORP
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- Abstract
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- Claims
- Application Information
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Problems solved by technology
However, by Japanese Unexamined Patent Publication (Kokai) No. 3-39485 (JP-A-3-39485), Japanese Unexamined Patent Publication (Kokai) No. 3-28380 (JP-A-3-28380) The surface of the steel plate produced by the technology disclosed in Japanese Unexamined Patent Publication (Open) No. 6-173037 (JP-A-6-173037) is easy to slide, so it is accompanied by the winding relaxation or load during the slice bundling process. Problems with folding causing rolls to shatter
Method used
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[0128] The present invention is explained in more detail below by examples and comparative examples, but it should be understood that the present invention is by no means limited by these examples.
[0129] First, an embodiment according to the first aspect of the present invention is explained.
[0130] (1) Reagent type
[0131] The list of reagents used is shown in Table 1. All polyolefin wax dispersions except D1 and D8 have 950-1000kg / m 3 Density (as specified in JIS K 6760), hardness (needle punch hardness) of 0.2 mm or less (as specified in JIS K 2207), crystallinity of 80% or more (measured by X-ray diffraction) and 110 -150°C melting point.
[0132] Table 1 List of Reagents
[0133]
No
product name
organic resin
A1
Acrylic resin (AP-1508(12), Toa Gosei Co., Ltd.)
A2
Polyolefin-based water-soluble resin (AR-2300, Toho Chemical Industry try Co.,
Ltd.)
A3
Polyurethane-b...
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Abstract
The present invention provides a surface-treated metal sheet having a coating film formed in an amount of 0.3 to 5.0 g / m<2> from a water-based organic / inorganic composite coating material which comprises: a lubricant comprising either (1) a polyolefin wax dispersion having a molecular weight of 6,000 to 15,000 or (2) a combination of a polyolefin wax dispersion (A) having a molecular weight of 6,000 to 15,000 and a polyolefin wax dispersion (B) having a molecular weight of 1,000 to 5,000; and colloidal silica of 5 to 35 wt.% on a solid basis. Also provided is a surface-treated metal sheet which has a first layer which is a coating film formed in an amount of 0.05 to 0.3 g / m<2> on a dry basis from a water-based organic / inorganic composite comprising a polyolefin wax dispersion having a molecular weight of 6,000 to 15,000 and a second layer which is a coating film formed in an amount of 0.5 to 5.0 g / m<2> on a dry basis from a water-based organic / inorganic composite comprising colloidal silica of 5 to 35 wt.% on a solid basis. The water-based organic / inorganic composite coating material with which these surface-treated metal sheets can be produced is further provided.
Description
[0001] This application is a divisional application of the patent application No. 02803860.6 (name of invention: surface-treated metal plate with excellent resistance to compression scratches and curling deformation and its manufacturing method). technical field [0002] The present invention relates to a surface-treated metal sheet suitable for automobiles, home appliances, building materials, etc., a manufacturing method thereof, and a water-based organic / inorganic composite coating that can be used to obtain the surface-treated metal sheet, which not only exhibits excellent Excellent performance such as corrosion resistance, adhesion and weldability, and exhibits excellent resistance to crushing scratches and curling deformation. [0003] The present invention also relates to a surface-treated metal sheet suitable for use in automobiles, home appliances, building materials, etc., a manufacturing method thereof, and a water-based organic / inorganic composite paint that can be ...
Claims
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IPC IPC(8): B05D5/00C09D5/00B05D5/08B05D7/24B32B15/08C09D5/02C09D123/02C09D201/00C23C22/00C23C22/53C23C26/00
Inventor 吉田健吾森下敦司宫内优二郎高桥彰
Owner NIPPON STEEL CORP