Composite sheet for absorbing type sanitary product

Abstract

The invention relates to the technical field of absorbing type sanitary products and discloses a composite sheet for an absorbing type sanitary product. The composite sheet comprises a first sheet body and a second sheet body, wherein the first sheet body and the second sheet body are combined, multiple hollow protrusions are arranged on the first sheet body and located away from the second sheet body, multiple bonding pits are formed in the round root of each protrusion and enable the first sheet body and the second sheet body to be bonded together, the number of the bonding pits is larger than that of the protrusions, and the size of each bonding pit is smaller than that of each protrusion; every two adjacent bonding pits are connected through a bonding section, and the bonding depth of each bonding section is larger than that of each binding pit. By means of the convex-concave structure formed by the two layers of materials, when the composite sheet makes contact with human skin, compressive deformation of the protrusions is light, the state of the protrusions is good, and ventilation and dry-touch effect are realized in the true sense.

Description

technical field [0001] The invention relates to the technical field of absorbent sanitary products, in particular to a composite sheet of absorbent sanitary products. Background technique [0002] Absorbent hygiene articles generally consist of a liquid-permeable topsheet for skin-contact use, a liquid-impermeable backsheet for non-skin-contact use, and an absorbent core layer between the liquid-permeable topsheet and the liquid-impermeable backsheet. Among them, the liquid-permeable surface layer, as the surface layer material in direct contact with human skin, is required to have the advantages of fast penetration speed, reduced liquid side flow, reduced back seepage, and contact with human skin at the same time, it must have the advantages of softness, good air permeability, and low irritation. . [0003] At present, the surface layer of common absorbent hygiene products is usually made of conventional non-woven fabric or thermoplastic perforated film. Liquid residue on...

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Problems solved by technology

[0006] The above two published patents disclose two different convex-concave non-woven fabric technical solutions, which accelerate the rapid absorption of liquid to a certain extent, and improve the breathable, dry and comfortable feeling of the liquid-permeable surface layer in contact with human skin. However, the above two This kind of non-woven fabric also has the following imperfections. Since the single-layer convex-concave non-woven fabric is used, when the convex part is in contact with the human skin, it is often affected by the pressure from all aspects of the body, and the convex state is greatly reduced. In addition, to realize the convex-concave three-dimensional shape of the non-woven fabric, it is often necessary to use a thicker non-woven fabric with a higher grammage; in addition, the surface layer of the convex-concave non-woven fabric often needs to be bonded and compounded with other materials in the lower layer by hot-melt adhesive. Made into absorbent hygiene products, "pearl non-woven fabric" reduces the potential risk of embossing effects by bonding the top of the protrusions to the underlying material as the bottom surface of the hollow protrusions is in contact with the hot melt adhesive

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