Formula of fragile membrane and preparation method of fragile membrane

Abstract

The invention discloses a formula of a fragile film and a manufacturing method thereof, and the formula of the fragile film comprises the following raw materials in parts by weight: 100 parts of water-based resin, 5-60 parts of color paste, 1-10 parts of a thickening agent, 0.1-10 parts of a leveling agent, 1-10 parts of a defoaming agent and 1-20 parts of a curing agent. The color paste is white, the solid content is 30-70%, the filler is one or a mixture of more of mica powder, talcum powder, kaolin, titanium dioxide and calcium carbonate, and the particle size d50 is 10-60 [mu] m. By adopting the water-based resin and a certain amount of the auxiliary agent, the water-based resin composite material can be broken under relatively high tensile strength, has solvent resistance and high-temperature yellowing resistance, can well absorb laser with the wavelength of 1064nm, improves the environmental protection property and meets the use requirements.

Description

technical field [0001] The invention relates to the field of fragile films, in particular to a formulation of a fragile film and a preparation method thereof. Background technique [0002] There are many kinds of fragile materials, including fragile paper and fragile film. Fragile materials are widely used in the label industry and can be used as carrier materials for anti-counterfeiting labels. The label should be damaged. At present, there are many methods of fragile materials. One is fragile paper. The strength of the paper itself is not high. The strength of the paper is further reduced by the fragile paper. The solvent resistance and light resistance of the fragile paper are not high. , one is a fragile film by extrusion method. The multi-layer co-extrusion method is used to reduce the strength of the core layer material. At the same time, more fillers are added to change the strength of the material itself. The cost of this production method is relatively high. Too mu...

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of fragile materials, such as fragile paper and fragile film. Fragile materials are widely used in the label industry. They can be used as carrier materials for anti-counterfeiting labels. The label should be damaged. There are many ways to make fragile materials. One is fragile paper. The strength of the paper itself is not high. The fragile paper will further reduce the strength of the paper. The solvent resistance and light resistance of fragile paper are not high. , a kind of fragile film by extrusion method, which adopts multi-layer co-extrusion method to reduce the strength of the core material, and at the same time add more fillers to change the strength of the material itself. The cost of this production method is relatively high, due to If too much filler is added, it is easy to break the membrane during the process of pulling the membrane, which requires high equipment. One is the electric shock method: such as BOPP, PET, etc., which use the electric spark to destroy the polymer chain of the membrane itself. The structure reduces the strength. This kind of film is effective for thin films, but has no effect on thicker films. At the same time, the films produced in this way have a strong smoke smell. One is die-cutting. In the existing materials The method of making tearing lines above will produce irregular cracks. The problem with this method is that a circle of cutting lines needs to be made, and the aesthetics will be reduced. There is also a method for coating: dissolving the resin with a solvent, Then it is coated on the corresponding release material, and then the release material is torn off to obtain a fragile film. This method consumes more organic solvents and the organic solvent remains in the material itself, which may exceed the standard in the subsequent VOC test. Based on the problem of easily broken membranes in the above methods of making fragile membranes, we propose a formula for fragile membranes and its production method