Process for manufacturing TPE (thermoplastic elastomer) type claw type screw cap from film coating iron

Abstract

The invention discloses a process for manufacturing a TPE (thermoplastic elastomer) type claw type screw cap from film coating iron. According to the process, firstly, special film coating iron with the thickness of 0.12 to 0.18 mm is selected in advance; then, the printing is performed at the front side of the special film coating iron; 140 to 170 DEG C baking is performed for 8 to 12 minutes; next, glazing coating is performed on the printing surface; the dry film weight is required to be 5 to 9g / m<2>; the baking is performed at 150 to 190 DEG C for 9 to 13 minutes; then, the iron sheet is subjected to cover punching to manufacture a material falling cover; after the adoption of the special film coating iron, the printing can be directly performed at one surface; the TPE glue particles or glue rings can be directly injected into the other side; the priming coating is not needed at the front side; the paint coating is not needed at the reverse side; the baking combustion energy sources can be saved; the discharge due to organic solvent combustion can also be reduced; the inner and outer bottom coating process is omitted; the natural gas energy source consumption is reduced; on the other hand, the coating work procedures are reduced, so that the consumption of the paint is greatly reduced; the corresponding volatilization and combustion organic solvent quantity is reduced.

Description

technical field

[0001] The invention relates to the technical field of making twist-off caps, in particular to a process for making TPE claw-type twist-off caps with peritoneal iron. Background technique

[0002] As one of the important branches of the metal packaging industry, the claw-type twist-off lid product is favored by the fruit, vegetable, condiment, meat and poultry food canning industry due to its low cost, good sealing performance, high temperature resistance and cooking resistance. However, the traditional claw-type twist-off cap is a reprocessing technology for painted iron products. On the one hand, the production process of the traditional claw-type twist-off cap requires multiple coatings on the front and back of the tinplate, resulting in a large amount of organic solvent volatilization. Oven incineration technology, but there is still the problem that the large amount of incineration leads to the emission of some incompletely burned organic solvents; at th...

Examples

Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] In Example 1 of the present invention, a process for making a TPE claw-type unscrewed cap made of iron peritoneum, the specific manufacturing steps are:

[0018] The first step is to pre-select special coated iron with a thickness of 0.12mm (chrome-plated iron is hot-coated with white or transparent or golden PET film on the front, and white or transparent or golden PE or PP or modified TPE film is hot-coated on the reverse side), and the special coating is used. After...

technical field

[0001] The invention relates to the technical field of making twist-off caps, in particular to a process for making TPE claw-type twist-off caps with peritoneal iron. Background technique

[0002] As one of the important branches of the metal packaging industry, the claw-type twist-off lid product is favored by the fruit, vegetable, condiment, meat and poultry food canning industry due to its low cost, good sealing performance, high temperature resistance and cooking resistance. However, the traditional claw-type twist-off cap is a reprocessing technology for painted iron products. On the one hand, the production process of the traditional claw-type twist-off cap requires multiple coatings on the front and back of the tinplate, resulting in a large amount of organic solvent volatilization. Oven incineration technology, but there is still the problem that the large amount of incineration leads to the emission of some incompletely burned organic solvents; at th...

Examples

Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] In Example 1 of the present invention, a process for making a TPE claw-type unscrewed cap made of iron peritoneum, the specific manufacturing steps are:

[0018] The first step is to pre-select special coated iron with a thickness of 0.12mm (chrome-plated iron is hot-coated with white or transparent or golden PET film on the front, and white or transparent or golden PE or PP or modified TPE film is hot-coated on the reverse side), and the special coating is used. After...