Manufacturing method for water absorbing material

Abstract

The invention relates to a manufacturing method for a water absorbing material. The method comprises the following steps: (1) performing net forming on a surface slurry material to prepare wet surfacelayer paper, and performing net forming on a bottom slurry material to prepare wet bottom layer paper; (2) separately spraying polymer water-absorbing resin to the wet surface layer paper and the wetbottom layer paper prepared in the step (1), and compounding the wet surface layer paper and the wet bottom layer paper sprayed with the polymer water-absorbing resin to prepare a wet paper sheet; and (3) pressing the wet paper sheet obtained in the step (2), and performing drying to obtain the water absorbing material. The method provided by the invention adopts a wet combination method for thepolymer water-absorbing resin as the combination manner, the polymer water-absorbing resin is completely embedded in paper sheet fibers, so that the contact area between the polymer water-absorbing resin and the paper sheet fibers is greatly improved, and meanwhile the conductivity of the paper sheet fibers and the polymer water-absorbing resin to a liquid is reinforced, thereby greatly improvingthe water absorption capacity and the water absorption speed of the water absorbing material.

Description

Technical field [0001] The invention relates to the technical field of water-absorbing materials, and in particular to a method for manufacturing water-absorbing materials. Background technique [0002] In the wood pulp core structure of high-absorbent products, the main absorbents are polymer water-absorbing resin and wood pulp. The current composite method of water-absorbent resin and wood pulp paper is dry composite. After spraying glue on the surface of the wood pulp layer, the polymer water-absorbing resin is dispersed on the surface of the wood pulp paper layer. Dry spray glue compounding will not only cause sanitary hazards to the water-absorbing material, but also affect the water absorption speed after the glue is dried; and after compounding, due to insufficient compounding during the application process, part of the polymer water-absorbing resin leaks and affects the water absorption. After dry compounding, the polymer water-absorbing resin is distributed on the surfa...

AI Technical Summary

Problems solved by technology

Dry glue spray compounding will not only cause hygienic hazards to water-absorbing materials, but also affect the water absorption speed after the glue dries; moreover, due to insufficient compounding during the application process after compounding, part of the polymer water-absorbing resin will leak and affect the water absorption.

After dry compounding, the polymer water-absorbing resin is distributed on the surface of the paper, and the contact with the wood pulp fiber is not sufficient, resulting in poor conductivity of the water-absorbing structure layer to the liquid, which affects the water absorption speed

[0003] At present, there is no report on the method of making water-absorbing materials by using wet-process composite polymer water-absorbing resins.

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