Polypropylene synthetic paper and production method thereof

Abstract

The invention relates to polypropylene synthetic paper and a production method thereof. The polypropylene synthetic paper comprises an outer surface layer, a middle layer and an inner surface layer, and the outer surface layer is obtained by preparing titanium dioxide, calcium carbonate and modified polypropylene copolymer; the middle layer is obtained by preparing polypropylene; the inner surface layer is obtained by preparing the titanium dioxide, the calcium carbonate and the modified polypropylene copolymer. The production method comprises the following steps: 1 extruding the outer surface layer raw materials, the middle layer raw materials and the inner surface layer raw materials through an extruder respectively; 2 extruding the melt of the raw materials which are extruded through the extruder of each layer through a T-shaped die head through a three-layer co-extruding tape casting method, after film is formed, conducting sizing and curing, and obtaining the polypropylene synthetic paper. According to the polypropylene synthetic paper, the surface is flat and smooth, the uniformity of the film thickness is good, and the neatness of end faces is good; the appearance expressive force is good, the light transmittance of the synthetic paper is low, and the wetting tension is high; the thickness control range is wide, traditional fiber paper can be replaced, and the polypropylene synthetic paper is used for presswork, commodity package materials and manufacturing adhesive tapes and tags.

Description

technical field [0001] The invention belongs to the field of packaging and printing, and in particular relates to a polypropylene synthetic paper and a production method thereof. Background technique [0002] Polypropylene synthetic paper has the advantages of soft texture, strong tensile strength, high water resistance, light resistance, cold and heat resistance, corrosion resistance to chemical substances, no environmental pollution and good air permeability. It is widely used for printing high-end artworks, maps, Picture albums and high-end books, etc. At present, domestic synthetic paper production methods are mainly calendering and blow molding. The products produced by calendering have a smooth surface and are suitable for printing high-end samples and book covers. Synthetic paper, the product has a large proportion and the equipment is expensive; the main raw material used in the blow molding method is polyethylene, and the disadvantages are that the thickness unifor...

AI Technical Summary

Problems solved by technology

This invention reduces the processing temperature in the preparation process and improves the tensile strength of environmentally friendly paper, but does not improve the surface smoothness, thickness uniformity, thickness controllable range, light transmittance and wetting tension.

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