Liquid-absorption core of grid structure and manufacturing process of liquid-absorption core

Abstract

The invention discloses a liquid-absorption core of a grid structure. The core comprises a grid-structure support frame made from flexible materials, meshes of the grid-structure support frame are filled with super absorbent resin, a diversion layer is attached to the lower surface of the grid-structure support frame, a lower non-woven fabric layer is attached to the lower surface of the diversion layer, and an upper non-woven fabric layer is attached to the upper surface of the grid-structure support frame. A manufacturing process of the liquid-absorption core of the grid structure comprises the steps that the diversion layer is bonded to the lower non-woven fabric layer with a hot melt adhesive, the grid-structure support frame made from the flexible materials is bonded to the diversion layer, the meshes of the grid-structure support frame is filled with the granular super absorbent resin, and then the upper non-woven fabric layer is bonded to the grid-structure support frame with the hot melt adhesive. According to the liquid-absorption core of the grid structure and the manufacturing process of the liquid-absorption core, a traditional method of conducting scattering on the fluffy non-woven fabric sparse pores for feeding is replaced, the absorbing capacity of a paper diaper is increased, the dosage of the hot melt adhesive is decreased, and the production cycle is shortened.

Description

technical field [0001] The invention relates to the technical field of sanitary care products, in particular to a liquid-absorbing core with a grid structure and a preparation process thereof. Background technique [0002] The structure of diapers or diapers usually includes a liquid-permeable top layer, an air-permeable liquid-impermeable bottom layer, and an absorbent body is arranged between the two layers to absorb urine. The absorbent body of existing diapers or diapers includes multi-layer absorbent layers. Common absorbent layer materials include wood pulp, puffed paper, non-woven fabrics, etc., and their materials are usually dry. When urine penetrates into the absorbent layer , because there is no difference between the wet part and the non-wet part, it is impossible to distinguish the use of the absorbent body. Mothers can only judge the wetness of the diaper by touching it with their hands to decide whether to change it for the baby. This is very unhygienic and un...

AI Technical Summary

Problems solved by technology

There are several problems in this kind of diapers: First, the place where the urine-displaying rubber strip is applied is very limited, and it is distributed in a strip shape on a local area of ​​the inner wall of the bottom layer. If the urine penetration position is not at the urine-displaying rubber strip, There is no change in wet marks at all, which easily leads mothers to make wrong judgments; secondly, it adds more expensive urine-displaying adhesive strips, which increases the manufacturing cost of the product, and the manufacturing process is relatively complicated. Therefore, its cost is high, and the price is expensive, which is unfavorable for large-scale popularization and use

[0007] Although this structure provides a new way of fixing the polymer resin layer, there is a bottleneck in production efficiency, and there are the following disadvantages:

[0008] (1) The polymer resin layer cannot evenly enter the fluffy non-woven fabric layer, so that in the manufacturing process, it must be spread on both the front and back sides for uniform distribution, which prolongs the production cycle

[0009] (2) Since the polymer resin layer needs to be spread on the fluffy non-woven fabric, the polymer randomly enters the fluffy fabric through the gap due to the sparseness of the fluffy fabric. When the production speed is >100m / min, the polymer resin layer cannot enter smoothly The interior of the fluffy non-woven fabric makes it possible to prefabricate the absorbent core in the high-speed production line, and then discharge it to the high-speed production line for production, further prolonging the production cycle

[0010] (3) Since the local density of the polymer resin layer is relatively random, too high a local density will cause local gel blocking of the core body, reducing the utilization rate of the polymer

[0011] (4) The easy movement of the polymer resin layer requires a large amount of hot melt adhesive to fix the polymer on the fibers of the tarpaulin, which increases the manufacturing cost

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