Highlight\pattern release paper backing paper and preparation method thereof

Abstract

The invention relates to a preparation method of highlight/pattern release paper backing paper. The method comprises the following steps: pulping and papermaking pulp as base paper; coating the surface of a matrix with a water-based coating material by adopting a soft scraping cutter coating process, wherein the water-based coating material is prepared by a high-shear dispersion, low-shear preparation, program type aging and impeller propulsion mixing and stirring composite method, is fully aged uniformly and has stable performance and certain lipophilicity; and drying, calendaring and finishing to obtain the highlight\pattern release paper backing paper. According to the invention, the raw materials are safe, environment-friendly, renewable and degradable, and the product has moderate, uniform and stable absorbability, flat, fine, smooth and clean surface, temperature resistance, friction resistance, tensile strength (longitudinal direction) of 8.0 kN/m or more, tensile strength (transverse direction) of 4.5 kN/m or more, front smoothness of 50 S or more, surface strength wax rod grade of 10 or more and surface water absorption Cobb value of 25-45 g/m<2>, the TAPPI oil-proof 6-grade testing agent surface dropping liquid absorption test shows that the absorption time is shorter than 60 seconds, the absorption round surface is smooth and free of tooth edges and pits, the highlight/pattern release paper backing paper can be used for processing and producing highlight leather release paper and fine pattern leather release paper, and the requirements of high-grade, artistic andenvironment-friendly development of artificial leather are met.

Description

technical field [0001] The invention belongs to the field of release paper base materials for artificial leather production, and in particular relates to a high-gloss / pattern release paper bottom paper and a preparation method thereof. Background technique [0002] With the high-grade, environmental protection and personalized development of artificial leather, the performance requirements of release paper for artificial leather are getting higher and higher. The high-gloss / patterned release paper bottom paper is widely used as the key substrate for processing high-gloss and patterned artificial leather release paper because of its high fiber density, smooth and smooth surface, and moderate and uniform absorption. To a large extent, it determines the performance of the artificial leather release paper. [0003] Traditional artificial leather release base paper, such as release paper base paper, artificial leather release base paper, although the density of the base paper ca...

AI Technical Summary

Problems solved by technology

The uncoated and uncoated base paper has too much absorbency and unevenness, so that the release coating consumed when the leather release layer is sprayed is greatly wasted and the cost is high

If ordinary pigment paint is used for coating, due to the large amount of adhesive latex used in the pigment paint, the latex is not compatible with the leather release layer coating, resulting in weak and uneven adsorption during subsequent processing of the leather release layer, resulting in release Serious problems such as uneven layer thickness, roughness, and easy separation from the base paper cannot meet the production requirements of high-grade leather release paper, such as high-gloss leather release paper and fine pattern leather release paper.