A kind of preparation method of synthetic paper with anti-mildew function

Abstract

The invention discloses a method for preparing a synthetic paper with a mildew-proof function. The method comprises a masterbatch preparing step and a film casting step, wherein the masterbatch preparing step comprises the following substeps: 1, selecting kneaded calcium carbonate; 2, adding a coupling agent into the calcium carbonate for premixing, and making the coupling agent fully coat the surfaces of calcium carbonate particles; 3, adding a dispersing agent for dispersion; 4, adding high density polyethylene or medium density polyethylene, an antioxidant 1076, stearic acid, color masterbatch and a mildew-proof agent for premixing once more; and 5, extruding and granulating to obtain plastic masterbatches; and the film casting step comprises the following substeps: performing calendering, curtain coating, film blowing and biaxial tension on the plastic masterbatches with a mildew-proof function to obtain a paper film. The method has the advantages that raw materials are pollution-free, waste materials can be recycled in the production process, and the synthetic paper has the advantages of low cost, high strength, no pungent smell, water resistance, oil resistance, wide application range and the like.

Description

technical field [0001] The invention relates to papermaking technology, in particular to a method for preparing synthetic paper with anti-mildew function. Background technique [0002] At present, the main manufacturing method of various anti-mildew papers on the market is to spray, coat or spray the anti-mildew agent on the surface of various base papers. Therefore, although it can reach A certain anti-mold function, but there are many disadvantages. First, the anti-mold agent will be processed later and attached to the surface of various base papers. The cumbersome production process will directly lead to an increase in cost. 2. Due to the high volatility of the antifungal agent, if it is applied to the wrapping paper with air circulation, the effective period of the antifungal agent is short, and it cannot be protected for a long time. 3. It will emit various pungent odors, which will affect the quality of the packaged product and hinder the application of the product. ...

AI Technical Summary

Problems solved by technology

[0002] At present, the main manufacturing method of various anti-mildew papers on the market is to spray, coat or spray the anti-mildew agent on the surface of various base papers. Therefore, although it can reach A certain anti-mold function, but there are many disadvantages. First, the anti-mold agent will be processed later and attached to the surface of various base papers. The cumbersome production process will directly lead to an increase in cost

2. Due to the high volatility of the antifungal agent, if it is applied on the wrapping paper with air circulation, the effective period of the antifungal agent is short, and it cannot be protected for a long time

3. It will emit various pungent odors, which will affect the quality of the packaged product and hinder the application of the product.

4. The world's forest resources are gradually decreasing. If a large number of natural paper substrates are used, it will cause the loss of water resources and environmental pollution.