Two-piece can production method

A manufacturing method and technology for two-piece cans, applied in rigid containers, containers, packaging, etc., can solve the problems of increasing the manufacturing cost of two-piece cans, environmental pollution of iron printing plants, hidden dangers of food safety, etc., so as to avoid trace defects and reduce energy consumption. , The effect that meets the appearance requirements

Active Publication Date: 2015-04-29
ORG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the primer effect, it is necessary to add curing agents, plasticizers and color thickeners dissolved in solvents and / or thinners to the interior or exterior coatings. The added curing agents, plasticizers and color thickeners give Food safety has caused hidden dangers; it has also caused environmental pollution in iron and steel printing plants;
[0005] (3) Color printing coatings need to be baked and cured multiple times (2-3 times) after the iron primer is coated. The curing temperature is about 150°C and the curing time is about 10 minutes. The entire curing process consumes a lot of energy and adds two pieces Manufacturing cost of tank

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] figure 1 It is the schematic diagram of the two cans manufactured in Example 1;

[0029] The manufacturing method of the two-piece can disclosed in this embodiment comprises the following steps:

[0030] The coated iron substrate (chrome-plated iron coated with polyethylene terephthalic acid film on the surface at a high temperature of 220°C) is sequentially processed by ink printing, curing, varnish coating and curing to obtain color-printed coated iron;

[0031] Bake the color-printed coated iron at 230°C for 30 seconds, using electromagnetic baking equipment, it is understandable that other baking equipment can be used, then water-cooled, and dried at 70°C until there is no obvious moisture on the surface of the colored-printed coated iron ;

[0032] The can body is obtained by successively blanking, cup punching, stretching and bottom punching of the color-printed coated iron;

[0033] Finally, the can body and the bottom of the can are integrated to obtain a two...

Embodiment 2

[0037] Different from Embodiment 1, the manufacturing method of the two-piece can disclosed in this embodiment includes the following steps:

[0038] The coated iron substrate (chrome-plated iron with a polyethylene terephthalic acid film clad on the surface at a high temperature of 235°C) is sequentially processed by ink printing, curing, varnish coating and curing to obtain color-printed coated iron;

[0039] Bake the color-printed coated iron at 225°C for 45 seconds, using combustion baking equipment, it is understandable that other baking equipment can also be used, then water-cooled, and dried at 80°C until the surface of the color-printed coated iron is no obvious moisture;

[0040] The can body is obtained by successively blanking, cup punching, stretching and bottom punching of the color-printed coated iron;

[0041] Finally, the can body and the bottom of the can are integrated to obtain a two-piece can.

[0042] The color-printed and film-coated iron two-piece can ...

Embodiment 3

[0044] Different from Embodiment 1, the manufacturing method of the two-piece can disclosed in this embodiment includes the following steps:

[0045] The coated iron substrate (chrome-plated iron whose surface is clad with polyethylene terephthalic acid film at a high temperature of 250°C) is sequentially processed by ink printing, curing, varnish coating and curing to obtain color-printed coated iron;

[0046] Bake the color-printed coated iron at 220°C for 1 minute, using electromagnetic baking equipment. It is understandable that other baking equipment can also be used, then water-cooled, and dried at 90°C until there is no obvious moisture on the surface of the colored-printed coated iron ;

[0047] The can body is obtained by successively blanking, cup punching, stretching and bottom punching of the color-printed coated iron;

[0048] Finally, the can body and the bottom of the can are integrated to obtain a two-piece can.

[0049] The color-printed and film-coated iron...

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PUM

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Abstract

The invention provides a two-piece can production method, which comprises the following steps of: sequentially conducting ink printing, curing, gloss oil coating and curing operations to a film-covered iron base material; drying color-printed film-cover iron for 30 seconds to 3 minutes at 190-230DEG C, then cooling the color-printed film-cover iron to room temperature, drying below 100DEG C till the surface of the color-printed film-cover iron does not have obvious water; sequentially conducting blanking, cup punching, drawing and bottom punching operations to the color-printed film-cover iron; and finally and integrally connecting a can body and a can bottom to obtain the two-piece can. The two-piece can production method is scientific and reasonable, the defects of the prior art are overcome, and the environmental friendliness and the low energy consumption of the production process are realized; and the two-piece can produced by adopting the method has excellent mechanical performance and appearance, and satisfies requirements on food safety and hygiene.

Description

technical field [0001] The invention relates to can making technology, in particular to a manufacturing method of a two-piece can. Background technique [0002] Two-piece cans are a type of metal cans, consisting of a can body and a can lid. Because the side wall and the bottom of the two-piece can body are an integral structure without joints, it has many advantages and is widely welcomed. Existing food two-piece cans mostly use color-printed coated iron as the base material for canning. The can body is made by blanking, cup punching, stretching, bottom punching and trimming in sequence, and then the bottom and body of the can are integrated. The color printing coated iron is prepared by the following steps: primer coating on steel plate (tin-plated or chrome-plated thin steel plate)→curing→ink printing→curing→varnish coating→curing. There are following defects in the color printing paint iron two-piece can prepared by the above steps: [0003] (1) When priming the steel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D8/04B65D23/08
Inventor 赵宇晖张作全倪俊义
Owner ORG TECH CO LTD
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