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Paint remover for removing paint film on surface of tin-plated steel plate for food can and using method thereof

A technology of tin-plated steel plate and paint remover, which is applied in the direction of chemical paint/ink remover and coating, which can solve the problems of construction site and operator hazards, poor environmental performance of solvents, strong volatility, etc., and achieve paint removal High efficiency, good environmental performance, and low volatility

Inactive Publication Date: 2012-09-26
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of paint remover is thorough in removing paint and has a wide range of applications, the solvent used has poor environmental performance, strong volatility, flammability and toxicity, and is harmful to the construction site and operators.

Method used

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  • Paint remover for removing paint film on surface of tin-plated steel plate for food can and using method thereof
  • Paint remover for removing paint film on surface of tin-plated steel plate for food can and using method thereof
  • Paint remover for removing paint film on surface of tin-plated steel plate for food can and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A paint remover for removing the paint film on the surface of a tinned steel plate for food cans and a use method thereof. The raw materials and contents of the paint remover are: 25~28wt% of dimethyl succinate, 32~35wt% of 1,2-propanediol carbonate, 14~15wt% of absolute ethanol, and 18~20wt% of lactic acid % and cetyltrimethylammonium bromide is 3~5wt%.

[0027] The preparation method of the paint remover for removing the paint film on the surface of the tinned steel plate for food cans described in this embodiment is: firstly carry out batching according to the raw materials and contents of the paint remover, and then divide the raw materials according to the order of solid to liquid Add, then stir at room temperature for 5-15 minutes, mix well and seal for later use.

[0028] The method of using the paint remover prepared in this example to remove the paint film on the surface of the tinned steel plate for food cans is: completely immerse the object to be depainted ...

Embodiment 2

[0030] A paint remover for removing the paint film on the surface of a tinned steel plate for food cans and a use method thereof. The raw materials and contents of the paint remover are: 28~30wt% of dimethyl glutarate, 30~32wt% of 1,2-propanediol carbonate, 10~12wt% of absolute ethanol, and 24~25wt% of lactic acid % and cetyltrimethylammonium bromide is 2.5~3wt%.

[0031] The preparation method of the paint stripper described in this embodiment and the usage method of the paint stripper for removing the paint film on the surface of the tinned steel plate for food cans prepared by this method are all the same as in Example 1.

Embodiment 3

[0033] A paint remover for removing the paint film on the surface of a tinned steel plate for food cans and a use method thereof. The raw materials and contents of the paint remover are: 30~33wt% of dimethyl adipate, 25~28wt% of 1,2-propanediol carbonate, 12~13wt% of absolute ethanol, and 23~24wt% of lactic acid % and cetyltrimethylammonium bromide is 4~5wt%.

[0034] The preparation method of the paint stripper described in this embodiment and the usage method of the paint stripper for removing the paint film on the surface of the tinned steel plate for food cans prepared by this method are all the same as in Example 1.

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Abstract

The invention relates to a paint remover for removing a paint film on the surface of a tin-plated steel plate for a food can and a using method thereof, wherein the paint remover is prepared from the following raw materials in percentage by weight: 25-35% of dibasic acid ester, 20-35% of 1, 2-propylene glycol carbonate, 8-15% of absolute ethyl alcohol, 16-25% of lactic acid and 2.5-6% of cetyl trimethyl ammonium bromide. The paint remover is prepared by a method comprising the following steps: firstly, burdening the raw materials of the paint remover according to the content thereof; adding the raw materials according to the sequence from solid to liquid respectively, then stirring for 5-15 minutes at room temperature, and sealing and reserving after mixing uniformly. The using method of the prepared paint remover for removing the paint film on the surface of the tin-plated steel plate for the food can comprises the following step of: immersing objects for removing the paint completely in the paint remover, wherein the using temperature of the paint remover is 25-80 DEG C, the best using temperature is 60-80 DEG C, and the immersing time is 1-15 minutes. The paint remover for removing the paint film on the surface of the tin-plated steel plate for the food can and the using method thereof provided by the invention have the characteristics of good environment-friendly performance, stable solvent components, paint removing efficiency and tiny metal corrosion performance.

Description

technical field [0001] The invention belongs to the technical field of paint removers, and in particular relates to a paint remover for removing the paint film on the surface of a tinned steel plate for food cans and a method for using the paint remover. Background technique [0002] Tin-plated steel sheet refers to cold-rolled low-carbon thin steel plate coated with commercially pure tin on both sides. Because of its corrosion resistance, non-toxicity, high strength, and good ductility, it is currently widely used in the food packaging industry. Tin-plated steel needs to go through a series of printing, forming and other processes before it can be put into use. The coating process of food cans mainly includes: inner coating, primer, white coating, metallic ink and varnish. Due to reasons such as rust, color shift, inaccurate registration, poor drying of the imprint, poor firmness and unstable ink performance, a large number of tin-plated steel sheets are produced every year...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/04
Inventor 段宁胡艳麟
Owner WUHAN UNIV OF SCI & TECH
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