Production technology of composite nonwoven fabric-film dust-free paper

Abstract

The invention, belonging to the technical field of papermaking, relates to a production technology of a composite nonwoven fabric-film dust-free paper, comprising the following steps: using heat bonding non-woven fabrics as bedding, mixing fluffy pulp wood fibers, melt composite fibers and superabsorbent fibers (SAF) in a moulding case and carrying out suction to form a dust-free paper structure, carrying out hot melting on non-woven fabrics, and then carrying out hot bonding on the hot melt non-woven fabrics with the dust-free paper to form a composite structure, coating a polyethylene film through a calender to obtain a composite product, and rewinding to obtain the finished product. The invention has the advantages of high tensile strength of the product, tight bonding of materials, difficult layering of the product after absorbing liquid, product performance assurance, and rapid absorption of a large amount of liquid.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a production process of composite non-woven fabric and film-type dust-free paper. Background technique [0002] In the prior art, the traditional papermaking method generally uses water as the medium, dilutes the wood pulp raw material and takes it to be formed on the net, and becomes paper after being dried. Traditional papermaking methods include the original artificial papermaking and modern mechanical papermaking. In the production process, various additives, such as bleaching agents, etc. are added to the wood pulp raw materials, and a large amount of water is used as the medium to dilute the wood pulp raw materials into a paste , and there is almost no water in the finished product, a large amount of medium water and chemical additives are filtered and discharged, resulting in waste of water resources and damage to the environment. Airlaid Paper, that is, a...

AI Technical Summary

Problems solved by technology

The disadvantages are: the production cost of the secondary processing is increased, and the bonding of the three materials is not tight enough, which is easy to cause delamination

In addition, the polymer water-absorbent resin (SAP), which plays a major role in absorbing liquid, exists in the form of granules or powder, which spreads unevenly during the production process, and the particles are easy to fall out, resulting in discomfort and a decrease in liquid absorption performance.

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