A kind of preparation method of reverse osmosis composite non-woven fabric

Abstract

The invention discloses a method for preparing a reverse osmosis composite non-woven fabric, which comprises the following steps: step 1, preparation of a hydrophilic fiber web layer; step 2, preparation of a double-layer fiber web layer; step 3, the preparation of the double-layer fiber web layer The fiber web layer is carried out mechanical reinforcement for the first time through net curtain transport, and the mechanical reinforcement direction for the first time is to reinforce from described kapok fiber web layer to described hydrophilic fiber web layer; Step 4, will pass through described first mechanical reinforcement The final double-layer fiber web is carried out to the second mechanical reinforcement from the hydrophilic fiber web layer to the kapok fiber web layer according to the direction; In order to carry out the third mechanical reinforcement from the kapok fiber net layer to the hydrophilic fiber net layer; the present invention utilizes the structure of the non-woven fabric and the characteristics of the material itself to achieve strong forward water conductivity and weak reverse water conductivity The effect of giving the nonwoven fabric the function of preventing reverse penetration.

Description

technical field [0001] The invention relates to the technical field of composite fabric preparation, in particular to a preparation method of reverse osmosis composite non-woven fabric. Background technique [0002] Regenerated cellulose fiber is a commonly used fiber raw material in textile materials, which is generally obtained by dissolving cellulose raw material and then spinning it. Due to the release of cellulose molecular chains by the dissolution process, its hygroscopicity and skin-friendly properties have been improved. Common fiber types in regenerated cellulose fibers are modal fibers, tencel fibers, rich viscose fibers (rich viscose fibers) and cupro ammonia fibers. [0003] Modal fiber is viscose fiber with high wet modulus, which is regenerated cellulose fiber. The fiber is made of wood through beating and spinning. The amorphous area in the fiber is small, and the arrangement of macromolecules is more orderly and dense; the cross section is circular, the s...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the key to realize the one-way permeation of the fabric lies in the polymer material layer in the middle. After the product is used and discarded, there is a great pressure on environmental protection.

The disadvantages are: kapok fibers and hydrophilic fibers are mixed and opened, the fibers are mixed evenly, the front and back of the nonwoven fabric have the same permeability to water, and there is no reverse osmosis function

Its disadvantage is that in this patent, kapok fiber is mixed with other fibers to make non-woven materials, which cannot make good use of the water-repellent properties of kapok

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