A kind of production method of solvent-free cold stamping composite film

Abstract

The invention discloses a solvent-free cold stamping forming composite membrane production method, comprising the treatment to a polyamide film, aluminum foil as well as a polyvinyl chloride film. The solvent-free cold stamping forming composite membrane production method particularly comprises the following steps of opening and uncoiling the polyamide film, pulling materials through, coating glue and coiling at a first uncoiling position; uncoiling the aluminum foil at a second uncoiling position, placing the aluminum foil below the polyamide films, coiling the aluminum foil through a composite compression roller and a composite roller, and coiling after the composite compression roller compresses downward and the polyamide film and the aluminum foil are in press fit together; curing; coating glue again; uncoiling the polyvinyl chloride film at the second uncoiling position, compressing the polyamide film and the aluminum foil which are in press fit and the polyvinyl chloride film to be fit by compressing the composite compression roller downward so as to form three layers of composite films, and then uncoiling; and curing again. Compared with the prior art, the solvent-free cold stamping forming composite membrane production method provided by the invention has the advantages that the deep stretching performance is excellent, the bonding firmness of each layer of materials is intensified greatly during the composite processing course of the product, especially solvent residue is zero, the possibility of polluting drugs by residual solvents is prevented, and the product safety is intensified greatly.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a production method of a solvent-free cold stamping composite film. Background technique [0002] At present, with the improvement of people's living standards, the quality requirements for medicines that are related to people's life safety are getting higher and higher, so the requirements for packaging materials that protect medicines are also getting higher and higher. Because some medicines are easy to deteriorate when exposed to moisture and easy to decompose when exposed to light, the packaging materials of these medicines not only require good barrier properties to oxygen and moisture, but also need to be able to avoid light and have good mechanical processing properties. , In addition, the compatibility requirements for drug packaging materials and drugs are becoming higher and higher at home and abroad. Accidents caused by the contamination of drugs by the pr...

AI Technical Summary

Problems solved by technology

[0003] In the existing production methods of cold stamping composite film, organic solvents are used, and organic solvents will bring a series of adverse effects, first, pollute the environment; second, oven heating is required to drain the solvent in the glue, and energy consumption Third, the volatilization of organic solvents in closed workshops has an impact on the health of workers; fourth, it is flammable; fifth, the efficiency is low, and the compound needs to wait for the organic solvents to volatilize, which limits the production speed and affects efficiency; Sixth, solvent-based glue cures slowly, and generally needs to be cured for more than 72 hours before entering the next process, while solvent-free glue cures quickly, and generally can enter the next process after two hours of curing; Seventh, solvent-based glue cannot be used in production. Drain the solvent completely. If the solvent residue exceeds the standard, it may contaminate the packaged medicine; and solvent-free glue does not have this danger because it does not contain organic solvents.

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