High-strength instant-suction composite dust-free paper

Abstract

The utility model discloses high-strength instant-absorption composite dust-free paper which comprises a reinforcing layer, a dust-free paper layer and an absorption layer which are arranged in sequence, the reinforcing layer is a hydrophilic polyester fiber layer, and the lapping mode of the hydrophilic polyester fiber layer is cross lapping; the dust-free paper layer is a wood pulp fiber layer; the absorbing layer is a super-absorbent fiber layer; the reinforcing layer, the dust-free paper layer and the absorbing layer are bonded through a degradable hot melt adhesive net film. Based on the high-strength instant-absorption composite dust-free paper, the effect of instantly absorbing liquid is achieved by utilizing the difference of moisture absorption of the reinforcing layer, the dust-free paper layer and the absorption layer, the reinforcing layer formed by cross lapping has higher strength than a fiber layer formed by parallel lapping, and the problem that the strength of the composite dust-free paper is insufficient after the composite dust-free paper absorbs the liquid can be avoided.

Description

Technical Field

[0001] The utility model relates to a composite dust-free paper, in particular to a high-strength instant-absorbing composite dust-free paper. Background Art

[0002] Dust-free paper is a non-woven fabric processed by air-laying wood pulp fibers and then through methods such as thermal bonding or chemical bonding. The raw materials of dust-free paper are diverse, including plant fibers based on cotton, hemp, etc., synthetic fibers based on viscose rayon, nylon, capron, etc., and mineral fibers based on asbestos, glass fiber, mineral wool, etc. Compared with ordinary cellulose paper, dust-free paper combines the characteristics of cellulose and polyester, and has good air permeability, softness, and hydrophilicity.

[0003] Dust-free paper is widely used in wet wipes and sanitary products. With the continuous progress of composite absorber technology, dust-free paper is also increasingly used in diapers. For example, both the upper layer and the lower layer of the composite absorber in sanitary napkins, diapers, etc. are made of dust-free paper. To avoid insufficient strength of the dust-free paper after absorbing liquid, it is necessary to provide a high-strength instant-absorbing composite dust-free paper. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-strength instant-absorbing composite dust-free paper, which is intended to be applied to the absorbent core layer of sanitary napkins, diapers, etc., to avoid insufficient strength of the dust-free paper after absorbing liquid.

[0005] To solve the above technical problems, the purpose of the utility model is achieved as follows: A high-strength instant-absorbing composite dust-free paper, comprising: a reinforcing layer, a dust-free paper layer, and an absorption layer arranged in sequence; the reinforcing layer is a hydrophilic polyester fiber layer, and the laying method of the hydrophilic polyester fiber layer is cross-laying; the dust-free paper layer is a wood pulp fiber layer; the absorption layer is a superabsorbent fiber layer; the reinforcing layer, the dust-free paper layer, and the absorption layer are bonded by a degradable hot melt adhesive web.

[0006] Based on the above solution and as a preferred solution of the above solution: The thickness of the reinforcing layer is 1 - 3 mm.

[0007] Based on the above solution and as a preferred solution of the above solution: The cross-sectional shape of the hydrophilic polyester fiber in the hydrophilic polyester fiber layer is cross-shaped.

[0008] Based on the above solution and as a preferred solution of the above solution: An antibacterial layer is arranged between the reinforcing layer and the dust-free paper layer.

[0009] Based on the above solution and as a preferred solution of the above solution: The antibacterial layer is a chitin fiber layer.

[0010] The beneficial effects of the present utility model are as follows: Based on the high-strength instant-absorbing composite dust-free paper of the present utility model, by utilizing the differences in hygroscopicity of the reinforcing layer, the dust-free paper layer, and the absorption layer, the effect of instantaneously absorbing liquid is achieved. The reinforcing layer formed by cross-laying has higher strength than the fiber layer formed by parallel laying, which can avoid the problem of insufficient strength of the composite dust-free paper after absorbing liquid. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the high-strength instant-absorbing composite dust-free paper related to the first embodiment;

[0012] Figure 2 It is a schematic structural diagram of the high-strength instant-absorbing composite dust-free paper related to the second embodiment;

[0013] In the figure: 1 - reinforcing layer, 2 - dust-free paper layer, 3 - absorption layer, 4 - antibacterial layer. Detailed Embodiment

[0014] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0015] First Embodiment

[0016] Combined with Figure 1 This embodiment will be described in detail. A high-strength instant-absorbing composite dust-free paper includes: a reinforcing layer 1, a dust-free paper layer 2, and an absorption layer 3 arranged in sequence; the reinforcing layer 1 is a hydrophilic polyester fiber layer, and the laying method of the hydrophilic polyester fiber layer is cross-laying; the dust-free paper layer 2 is a wood pulp fiber layer; the absorption layer 3 is a superabsorbent fiber layer; the reinforcing layer 1, the dust-free paper layer 2, and the absorption layer 3 are bonded by a degradable hot melt adhesive web.

[0017] Hydrophilic polyester fiber is prepared by mixing a hydrophilic material into a polyester spinning melt before conventional spinning and then performing melt spinning. The introduction of the hydrophilic material can improve the hydrophilicity of the polyester fiber.

[0018] Compared with superabsorbent resin, superabsorbent fiber is in fiber form, thus having many advantages: large surface area, faster absorption speed; a tangling structure can be formed between superabsorbent fibers, making it not easy to migrate; the non-woven fabric material containing superabsorbent fiber is very soft even with a relatively high content; superabsorbent fiber can be made into non-woven fabric by traditional equipment; superabsorbent fiber still maintains its fiber structure to a certain extent after absorbing water, thus having higher strength; superabsorbent fiber has better heat-resistant water retention and permeability than superabsorbent resin, and has a stronger liquid absorption capacity.

[0019] Cross-laying is to lay the fiber web multiple times at a certain angle. The fibers are crisscrossed with each other, and the spatial structure exhibited by the fiber web is more disordered. The crisscrossing of vertical and horizontal fibers makes the pores between the fibers smaller and denser. The hydrophilic polyester fiber layer formed by cross-laying has higher strength than the fiber layer formed by parallel-laying, and can avoid the problem of insufficient strength after the composite dust-free paper absorbs liquid.

[0020] Furthermore, the cross-sectional shape of the hydrophilic polyester fibers in the hydrophilic polyester fiber layer is cross-shaped. Further, the thickness of the reinforcing layer 1 is 1 - 3 mm. The reinforcing layer 1 can play a role in protecting the dust-free paper layer 2, and at the same time will not affect the liquid absorption performance of the composite dust-free paper.

[0021] The fibers with a cross-shaped cross-section have four grooves longitudinally, and have a larger specific surface area compared with the fibers with a circular cross-section, making more hydrophilic groups exposed on the fiber surface, thereby enhancing the hydrophilicity of the fibers. And according to the principle of capillary effect, using this moisture-conducting structure, a good moisture-conducting effect can be achieved. When the liquid contacts the reinforcing layer 1, based on the good moisture-conducting effect of the cross-shaped cross-section hydrophilic polyester fiber layer, the liquid will be quickly guided to the dust-free paper layer 2 and further to the absorption layer 3. By utilizing the difference in hygroscopicity of hydrophilic polyester fibers, wood pulp fibers, and superabsorbent fibers, a differential moisture-conducting effect is formed among the reinforcing layer, the dust-free paper layer, and the absorption layer, achieving the effect of instantaneously absorbing liquid.

[0022] Example Two

[0023] Combined with Figure 2 This embodiment is described in detail. On the basis of Example One, an antibacterial layer 4 is provided between the reinforcing layer 1 and the dust-free paper layer 2. Further, the antibacterial layer 4 is a chitin fiber layer.

[0024] In the process of selecting sanitary products such as sanitary napkins and diapers, attention also needs to be paid to the antibacterial effect. If the antibacterial effect is poor, bacteria are extremely likely to breed during use. In a long-term bacterial breeding environment, the skin will also be affected accordingly. Therefore, the antibacterial layer 4 is provided.

[0025] Chitin is an edible animal cellulose existing in the shells of crustaceans such as crab shells. It not only has good antibacterial efficacy but also can make the wound heal quickly. Chitin fibers are obtained by adding chitin antibacterial agents during viscose spinning. The antibacterial performance of the fibers obtained by this method is persistent, and chitin fibers are biodegradable, which also conforms to the consumer concept of pursuing green, environmental protection, and health.

[0026] The chitin fiber layer can not only improve the water absorption capacity of the composite dust-free paper but also maximize the inhibition of bacterial growth, and will not affect the skin feeling due to long-term use. On this basis, it can effectively inhibit pathogens such as Staphylococcus aureus and Escherichia coli in excrement.

[0027] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present utility model without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in this technical field based on the concept of the present utility model through logical analysis, reasoning, or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. A high-strength instant-absorbing composite dust-free paper, characterized in that, Comprising: A reinforcing layer (1), a dust-free paper layer (2), and an absorption layer (3) arranged in sequence; the reinforcing layer (1) is a hydrophilic polyester fiber layer, and the laying method of the hydrophilic polyester fiber layer is cross-laying; the dust-free paper layer (2) is a wood pulp fiber layer; the absorption layer (3) is a superabsorbent fiber layer; the reinforcing layer (1), the dust-free paper layer (2), and the absorption layer (3) are bonded by a degradable hot melt adhesive web.

2. The high-strength instant-absorbing composite dust-free paper according to claim 1, wherein The cross-sectional shape of the hydrophilic polyester fiber in the hydrophilic polyester fiber layer is cross-shaped.

3. The high-strength instant-absorbing composite dust-free paper according to claim 1, characterized in that, The thickness of the reinforcing layer (1) is 1-3 mm.

4. The high-strength instant-absorbing composite dust-free paper according to claim 1, characterized in that, An antibacterial layer (4) is arranged between the reinforcing layer (1) and the dust-free paper layer (2).

5. The high-strength instant-absorbing composite dust-free paper according to claim 4, wherein The antibacterial layer (4) is a chitin fiber layer.

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