Resin-coated seamless aluminum can and resin-coated aluminum alloy lid

A technology of seamless aluminum cans and aluminum alloys, applied in coatings, metal material coating processes, anti-corrosion coatings, etc., can solve the problems of non-corrosion resistance and tightness

Active Publication Date: 2008-09-03
TOYO SEIKAN KAISHA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these treatment agents has sufficient corrosion resistance, adhesion

Method used

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  • Resin-coated seamless aluminum can and resin-coated aluminum alloy lid
  • Resin-coated seamless aluminum can and resin-coated aluminum alloy lid
  • Resin-coated seamless aluminum can and resin-coated aluminum alloy lid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] · Polymer modulation

[0149] The water-soluble polymer is a polymer represented by formula (I), wherein X is an independent hydrogen atom or Z=-CH in each structural unit represented by formula (I) 2 N(CH 3 ) 2 , the introduction efficiency of Z groups is 0.5 per benzene ring, and the average molecular weight when all X are hydrogen atoms is 3000.

[0150] Calculation of the introduction efficiency of Z base

[0151] The C, H, N, and S elements contained in the prepared polymer were quantified using an EA1108 elemental analysis device manufactured by FISONS. According to the quantitative results, the efficiency of Z group introduction was calculated.

[0152] ·Preparation of treatment liquid

[0153] Pour ion-exchanged water at normal temperature into a container with a stirring device. Add 71 g / L of 40% zirconium fluoride hydrochloride (Zr content 17.6%), 15 g / L of 85% phosphoric acid, and 9 g / L of 55% hydrogen fluoride acid while stirring at room temperature, a...

Embodiment 2

[0155] The water-soluble polymer is a polymer represented by formula (I), wherein X is an independent hydrogen atom or Z=-CH in each structural unit represented by formula (I) 2 N(CH 3 ) 2 , the introduction efficiency of the Z group is 0.5 per benzene ring, and the average molecular weight when all X are hydrogen atoms is 1500, the same as in Example 1 except that.

Embodiment 3～16、 comparative example 1～8

[0157] In the above-mentioned Example 1, the zirconium component, the phosphorus component, the polymer concentration, the pH, the average molecular weight of the polymer, and the Z group introduction efficiency of the polymer were changed as shown in Table 2, and the others were the same as in Example 1.

[0158] (cleaning of aluminum alloy plate)

[0159] Using the strong base degreasing agent "Fine Cleaner 4377" (trademark, manufactured by Japan Parker Seisei Co., Ltd.) sold on the market, under the conditions of chemical concentration 20g / L, processing temperature 60 ℃, and processing time 7 seconds, the market Aluminum-manganese alloy plates sold on the Internet (for cans = JIS A3004 plate thickness: 0.3 mm plate size: 200 × 300 mm, for lids = JIS A5182 plate thickness: 0.25 mm plate size: 200 × 300 mm) are sprayed. Afterwards, wash off the residual alkali substance on the surface with tap water.

[0160] (treatment of aluminum alloy plate)

[0161] Use the surface trea...

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Abstract

Disclosed is a seamless aluminum can or can lid having an adhesion property and corrosion resistance, which is produced by providing a non-chrome conversion coating film on an aluminum alloy sheet and coating the surface of the resulting product with an organic resin layer. An organic-inorganic composite surface treating layer is provided on at least one surface of an aluminum alloy sheet, and anorganic resin coating layer is formed on the surface treating layer, wherein the surface coating layer comprises a zirconium compound in an amount of 2 to 20 mg/m2 in terms of a zirconium atom, a phosphorous compound in an amount of 1 to 10 mg/m2 in terms of a phosphorous atom and an organic compound in an amount of 5 to 60 mg/m2 in terms of a carbon atom.

Description

technical field [0001] The present invention relates to a resin-coated seamless aluminum can and aluminum alloy can lid with corrosion resistance and adhesion, which has an organic / inorganic composite resin film layer on at least one side surface of the aluminum alloy plate, And there is a resin coating layer on it. Background technique [0002] Aluminum plates or aluminum alloy plates are used for the bodies and lids of beverage cans and the like. As a can body material and can lid material, aluminum has the characteristics of being easy to process and maintaining taste, but it has the problem of poor corrosion resistance compared with surface-treated steel. [0003] On the other hand, the previous aluminum plate surface treatment used chromium phosphate surface treatment agent. The chemically formed film formed by this chromium phosphate surface treatment agent has high corrosion resistance, and its corrosion resistance and adhesion are still high after coating various r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/07C22C21/00C09D5/08C22C21/06C09D161/06
Inventor 西田一弘只木康文藤田智志高木直行金泽清太郎末俊雄
Owner TOYO SEIKAN KAISHA LTD
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