A kind of spunlace composite non-woven fabric formed by fourdrinier net forming on-line spunbond and its preparation method

Abstract

The invention discloses a fourdrinier-formed online spun-bonded spunlace composite non-woven fabric, which comprises an online wet fourdrinier-formed first fiber layer and an online spun-bonded second fiber layer, and consists of the first fiber layer and the second fiber layer. Two fiber layers are laminated with spunlace. The invention not only needs online fourdrinier forming and online spunbond synchronous one-time forming in the production process, but the process is simple and convenient, and can realize a relatively high production speed of 400-1200m / min by using fourdrinier forming and spunbonding forming , can break through the limit of the current PP spunbond composite wood pulp spunlace nonwoven production line with a maximum production speed of 160m / min, and the winding speed of the fourdrinier online spunbonded spunlace composite nonwoven production line can reach more than 350m / min. It greatly improves production capacity, saves energy consumption, reduces material loss, and reduces production costs. At the same time, due to the controllability of spunbond consolidation, the product has high friction and adsorption, good liquid absorption, strong decontamination ability, and reliable characteristics. Personalized customization according to end use requirements.

Description

technical field [0001] The invention relates to the technical field of spunlace nonwoven fabrics, in particular to a spunlace composite nonwoven fabric formed by fourdrinier and online spunbond and a preparation method thereof. Background technique [0002] The existing PP spunbonded composite wood pulp spunlace nonwoven fabric is widely used in fields such as industrial wiping materials, kitchen wiping materials, and wet wipes due to its good wiping strength and good liquid absorption and decontamination ability. There are two main production processes, both of which are made by off-line secondary molding. [0003] One process is to prepare PP spunbond cloth and wood pulp paper offline respectively, and then unwind them through the unwinding machine respectively. After the two layers of materials are laminated, they will be entangled and reinforced by the hydroentanglement process to form a PP wood pulp paper. thorn cloth. [0004] Another process is to first melt the PP ...

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of the above schemes is that they all use off-line spunbond cloth (or PP hydrophobic layer) unwinding equipment to unwind and transport to the wet-laid web, then laminate with the wet-laid fiber layer, and combine them into one through hydroentanglement

[0009] The disadvantage of the above scheme is that the polypropylene spunbond fiber web is formed online by the online web forming device of spunbond fiber, and the polypropylene spunbond fiber web is not consolidated, and is directly stacked up and down with the fiber layer formed by the web forming device at the upper end After that, they enter the subsequent multi-stage spunlace device together for spunlace compounding

However, due to its moisture regain rate of 0%, polypropylene fibers basically do not absorb water, so they cannot directly absorb the energy of water needles for entanglement. It is fluffy and does not have the strength to use, so it needs to be reinforced after finishing processes such as leveling and calendering, turntable spray coating finishing, etc.

However, flat calendering is basically realized by calendering and flattening the entire surface, which not only cannot achieve point bonding, but reduces the thickness of the product, and the product is relatively hardened

However, coating finishing is not environmentally friendly. This method not only fails to obtain the high decontamination capacity required for the best wiping material, but also wastes spunlace energy consumption.

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