A kind of flow guiding nonwoven composite material and preparation method thereof

Abstract

The invention relates to a non-woven composite material for flow guiding and a preparation method thereof. The non-woven composite material for flow guiding comprises a hot air non-woven fabric layer,a damping layer and a protective layer which are sequentially laminated, compounded and consolidated. In the preparation method, the damping layer is sprayed on the protective layer, later the fluffyhot air non-woven fabric layer is laid on the damping layer, and the three layers are consolidated together by an ultrasonic compounding action to form the non-woven composite material for flow guiding used for an absorbent core. In the method for preparing the non-woven composite material for flow guiding, by adding a polypropylene melt-blown non-woven fabric layer with a groove structure on thefiber surface between the fluffy hot air non-woven fabric layer and the protective layer, the non-woven composite material for flow guiding not only has a rapid down-infiltration speed, but also hasa good vertical diffusion effect, and has soft characteristics at the same time, and can be used for diapers, sanitary napkins and other disposable absorbent products.

Description

technical field [0001] The invention relates to the field of disposable sanitary products, in particular to a flow-guiding non-woven composite material and a preparation method thereof. Background technique [0002] In disposable sanitary products such as diapers and sanitary napkins, the absorbent core is the key component. Its main function is to use the internal superabsorbent resin and fluff pulp to absorb and store liquid, and the superabsorbent resin expands after absorbing liquid, and then interacts with each other. Connecting to block the liquid diffusion channel, thereby affecting the reabsorption speed and capacity of the water-absorbent core, and also causing a low utilization rate of the superabsorbent resin. [0003] At present, most people use air-through nonwoven fabrics as the air-guiding layer to solve this problem; the early air-through nonwoven fabrics used for the air-guiding layer are mostly single-layer fiber webs, and later there are coarse-denier fibe...

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Problems solved by technology

[0002] In disposable sanitary products such as diapers and sanitary napkins, the absorbent core is the key component. Its main function is to use the internal superabsorbent resin and fluff pulp to absorb and store liquid, and the superabsorbent resin expands after absorbing liquid, and then interacts with each other. Connecting to block the liquid diffusion channel, thereby affecting the water absorption speed and ability of the water-absorbent core, and also resulting in a low utilization rate of the superabsorbent resin

[0003] At present, most people use air-through nonwoven fabrics as the air-guiding layer to solve this problem; the early air-through nonwoven fabrics used for the air-guiding layer are mostly single-layer fiber webs, and later there are coarse-denier fiber webs and fine-denier fiber webs. The double-layer hot-air nonwoven fabric is used as the diversion layer; although the pure hot-air nonwoven fabric can improve the utilization rate of the superabsorbent resin as the diversion layer, its weight is 30-60g / m 2 , which not only increases the cost of absorbent sanitary products, but also makes the overall structure of the prepared product too thick and not soft enough. The prepared diapers and sanitary napkins are often very thick, which will cause inconvenience to users and affect wearing comfort. sex

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