Paper diaper absorbing core body, production technology thereof and adhesive spraying technology

Abstract

The invention discloses a paper diaper absorbing core body, a production technology thereof and an adhesive spraying technology. The paper diaper absorbing core body comprises an upper wrapping layer, an absorbing core layer, an adhesive layer and a lower wrapping layer, wherein adhesive layer comprises a plurality of groups of adhesive bodies in a plane spiral band shape; the groups of adhesive bodies in a plane spiral band shape are distributed at intervals in the width direction of the absorbing core layer; the length of each group of adhesive bodies in a plane spiral band shape is matched with that of the absorbing core layer. The adhesive spraying technology is used for performing adhesive spraying on a surface to be sprayed of a layer to be sprayed of the paper diaper absorbing core body through an adhesive spraying device, and comprises the steps of ensuring that the layer to be sprayed continuously moves forward to the direction of the adhesive spraying device through a conveying device, and controlling a plurality of nozzles, which are arranged in parallel in the width direction of a plurality of layers to be sprayed, of the adhesive spraying to perform cyclotron motion adhesive spraying on the surface to be sprayed of the layer to be sprayed during the continuously forward movement, so that an adhesive layer with the groups of adhesive bodies in a plane spiral band shape is formed.

Description

technical field [0001] The invention relates to the field of hygienic products, in particular to an absorbent core of a diaper, a manufacturing process and a glue spraying process. Background technique [0002] Diapers are a commonly used sanitary product. Generally speaking, diapers are composed of three main parts: cover layer, absorbent core and base fabric. The surface coating layer can also be called a coating layer or a water-permeable surface layer. The coating layer is close to the user's body, which can promote the rapid penetration of urine and effectively prevent back seepage, so that the surface layer of the diaper can be kept dry. At present, the covering layer of diapers in the domestic market is basically a non-woven surface layer. The breathable non-woven fabric can improve the air permeability inside the diaper, and the water vapor can circulate outside the diaper, and the moisture and heat can be discharged in time, effectively reducing the air permeabilit...

AI Technical Summary

Problems solved by technology

In the prior art, in the manufacturing process of the absorbent core, the spraying method of the upper adhesive layer is a full spray method, that is, the surface of the absorbent core is fully sprayed by a glue spraying tool. This full spray process cannot Spray evenly on the surface of the absorbent core, there may be cases where the spray glue is thicker in some positions, and thinner in some positions, etc. The spray glue in this way will greatly affect the height below the upper adhesive layer. The water absorption work of water-absorbent resin, even if more super-absorbent resin is added, the liquid cannot penetrate into the absorbent core from the water-permeable surface layer very quickly; at the same time, the use of full spray method also increases the amount of glue, which is not conducive to saving costs

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