Environment-friendly UV glue applied to flexible packaging film

Abstract

The invention relates to environment-friendly UV glue applied to a flexible packaging film. The environment-friendly UV glue is prepared from components in percentage by weight as follows: 45%-65% ofurethane acrylate, 10%-20% of TFHA (tetrahydrofurfuryl acrylate) monomers, 10%-26% of IBOA (isobornyl acrylate), 3%-5% of a photosensitizer TPO and 2%-4% of a photosensitizer ITX. The invention further provides a preparation method and a use method of the environment-friendly UV glue. Appearance, glass strength and heat sealing strength of a composite structural film prepared from the UV glue arecomparable with those of a composite structural film prepared from solvent-free compound glue, the using requirement of the flexible packaging film industry can be met, besides, the glue can be curedrapidly, so that production efficiency is obviously improved, and quality accidents and accident cost are reduced; further, an overlong heating oven is not needed, therefore, size of a compound machine can be reduced, and a production spot is reduced.

Description

technical field [0001] The invention relates to the technical field of UV glue, in particular to an environment-friendly UV glue applied to flexible packaging films, and a preparation and use method thereof. Background technique [0002] At present, the flexible packaging film composite process mainly uses environmentally friendly solvent-free composite glue. The main components are: NCO component and OH component. The method of use is: the first step is to mix the NCO component and OH component in proportion (generally 100: 85), the gluing compound roller system is heated up by 40-50 degrees to carry out NCO and OH reaction, and the roller is coated with glue and compounded. Step 2 The composite product can be cut and processed after natural aging at room temperature ≥ 30°C for 24 hours; if bag making or packaging processing is required, it should be cured at 35-45°C and relative humidity 60%-70% for 24- 48 hours. [0003] The above flexible packaging film composite proce...

AI Technical Summary

Problems solved by technology

The above composite process cannot check the quality in time, and there are production risks, and its quality accidents have a great impact and high cost of handling quality accidents

[0006] (3) Solvent-free two-component glue promotes the reaction of NCO and OH through temperature, so the use is time-limited. If the time is too long, the two-component has reacted in the mixing container, which will affect the later use. and recycling

[0007] (4) The composite curing process requires heating, and the composite machine needs to be equipped with a long heating oven to meet the production requirements. Therefore, the production equipment occupies a large area, which virtually increases the production cost of the enterprise.

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