Paper-plastic lamination adhesive and method for preparing same

Abstract

Disclosed are a paper-plastic glue and its preparing method,comprising of high polymer latex 70-90%,resin 5-15%,inorganic powder filler 3-15%,dispersant 0.5-0.8%,thickener 0.2-0.5% and deformer 0.1-0.3%. Its preparing method is:1.pre the deformer with high polymer latex; 2. disperse; 3. add into inorganic filler and disperse;4.add into resin and disperse;5. add into thickener for adjusting the viscosity to be the construction one,the output and package the material.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a paper-plastic laminating adhesive and a preparation method thereof. Background technique [0002] Paper-plastic laminating adhesive is an adhesive for pasting corona-treated polymer films and paper. The polymer films used are mainly polypropylene (BOPP), polyester film (PET), polyvinyl chloride (PVC), polyester and other films. The main function of laminating paper is to make moisture-proof, waterproof, and beautiful-looking packaging materials. To the role of folding and wear resistance, improve service life. The adhesive used for paper-plastic lamination is called laminating glue. [0003] The application of paper-plastic composite technology has been very common. It is widely used in the packaging and printing industry such as product brochures, hardcover book covers, product advertisements, business cards, hardcover calendars, and painting artwork production. [0004]...

AI Technical Summary

Problems solved by technology

The advantages of hot-melt laminating adhesive are that it does not contain organic solvents, low pollution, fast coating speed, and high production efficiency. However, this method of pre-coating film also has some disadvantages: it can only be bonded after heating, and it is inconvenient to use. The laminated product with low adhesion is easy to peel off, and there are some problems in subsequent processing, which limits its use

[0008] (1) The performance of the emulsion is unstable and the shelf life is short;

[0009] (2) Low initial adhesion, poor aging resistance, sharp drop in peel strength during placement, and low holding power;

[0010] (3) The frost resistance, heat resistance and wettability of the emulsion itself to the surface of the substrate (especially the low-energy surface) are poor, and the compatibility with the printing ink is not good;

[0011] (4) The migration of the small molecule emulsifier in the emulsion makes the product have poor water resistance and physical properties such as adhesion;

[0012] (5) Since water volatilizes slower than organic solvents, it cannot be coated at high speed during processing of laminated products, and heat drying is required, resulting in low production efficiency;

[0013] (6) In order to increase the miscibility of emulsion and tackifying resin, some emulsion-type laminating adhesives add organic solvents, which are harmful to the environment