Heat compounding technique and apparatus of BOPET film and tin-free steel plate

Abstract

The invention provides a heat compounding technique of a BOPET film and a tin-free steel plate,which comprises the steps of: uncoiling the steel plate by an uncoiling machine, preheating the steel plate to a set temperature by a preheating machine set, and high temperature heat compounding the preheated steel plate with the BOPET film through a hot pressing device, and coiling the heat compounded steel plate by a coiling machine. The invention also provides a heat compounding apparatus of BOPET film and tin-free steel plate, wherein the steel plate is uncoiled by the uncoiling machine and is conveyed to the preheating machine set to be preheated, and the preheated steel plate is heat compounded with the BOPET film by the hot pressing device. The heat compounding technique and apparatus of BOPET film and tin-free steel plate provided by the invention has the advantages of compounding a plastic film on the surface of the steel plate in an efficient, environmental friendly and low-cost manner, the production process is environmental friendly, the product has better erosion resistance, and no toxic low molecular compound is residual, so that the invention satisfies the low-carbon and environmental friendly conception of mass production in the modern industry.

Description

technical field [0001] The invention relates to a process and equipment for thermally laminating BOPET film and tin-free steel plate, in particular to a process and equipment for thermally laminating BOPET film and tin-free steel plate under high temperature. Background technique [0002] At present, most food cans in my country use tinplate as the base material, and paint is sprayed inside and outside to prevent food and oxygen from corroding the can body. Tinplate is a thin steel plate tinned on the surface, which has a history of more than 100 years as metal packaging for food and the like. The paint used on the inner surface of the packaging tank with tinplate as the base material, that is, the surface directly in contact with food, is based on epoxy resin, and epoxy resin often contains bisphenol A, which is harmful to the human body. Bisphenol A is very harmful to the human reproductive system. If it remains in the tank, it is likely to enter the human body and endang...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the existing technology, the present invention can completely solve the possible harm to human health, pollution and high energy consumption existing in the prior art by providing a brand-new production process and equipment of thermal compounding of BOPET film and tin-free steel plate. problems, while improving product quality and reducing pollution, it can also reduce production costs and reduce and avoid harm to human health

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