Degradable composite spunlaced nonwovens and manufacturing method thereof

Abstract

The invention discloses degradable composite spunlaced nonwovens with thick and soft feel, fine water absorptivity and good dedusting effect and a manufacturing method thereof. For the degradable composite spunlaced nonwovens, spunlaced processing is carried out on the an upper layer, an intermediate layer and a lower layer by an unwinding method in a on-line or off-line manner, the upper layer is a degradable fiber carded web, the intermediate layer is wood pulp fiber air laying and the lower layer is polylactic acid nonwovens. The manufacturing method comprises the following steps of wood pulp fiber airlaying, degradable fiber opening picking, carded web, spunlacing and baking, which respectively controls an airlaying conveying fan, a forming suction fan, recycling suction fan efficiency, an opening picking gauge, carded main cylinder speed, chest cylinder speed and up-down random roller speed, pressure of each water stabs head of spunlacing, baking suction machine, circulation fan, exhaust fan efficiency, baking temperature and the like.

Description

Invention content: [0001] The invention relates to a spunlace composite nonwoven fabric and its production method, especially a degradable composite spunlace nonwoven fabric with thick and soft hand feeling, good water absorption, good dust removal effect, low cost and degradation function and its production method Background technique: [0002] Spunlaced nonwovens have a wide range of applications and can be used in many fields such as life, medical treatment, and industry. For example, daily necessities can be used for wipes, wet face towels, compressed towels, etc.; medical and health can be used for medical sheets, pillowcases, tablecloths, etc.; industrial supplies can be used for wipes, laboratory work clothes, etc. The existing spunlace nonwovens are basically single-layer spunlace nonwovens formed by mixing 70% viscose and 30% polyester as raw materials and entangled on-line or off-line by spunlace. question: [0003] 1. The cost of viscose fiber, the main componen...

AI Technical Summary

Problems solved by technology

[0003] 1. The cost of viscose fiber, the main component, is rising year by year and the global supply is tight, resulting in relatively high product costs;

[0004] 2. Because polyester fiber is a petroleum product, it cannot be degraded in the natural environment, resulting in waste products (especially disposable wipes) causing greater pressure on environmental protection

[0005] Although there are easily degradable fibers such as viscose, tencel, PLA fibers, PVA fibers, and naturally degradable fibers such as wood pulp fibers and polylactic acid fibers, so far, no easily degradable fibers have been combed into webs, wood pulp fibers, etc. Related reports on air-laid and polylactic acid nonwoven spunlace composite products

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