CN210932247U - A kind of diversion and moisture-proof diaper - Google Patents

Abstract

The utility model relates to the technical field of diapers, in particular to a diaper for diversion and moisture isolation. From top to bottom, it includes a diffusion layer, a moisture barrier layer and an absorption layer; the diffusion layer includes an upper layer of polyurethane sponge and a lower layer of polyurethane sponge, the upper layer of polyurethane sponge is provided with a number of inclined channels along the circumference, and the lower layer of polyurethane sponge is overlapped with many The lower layer of the polyurethane sponge has longitudinal channels and transverse channels; the beneficial effects of the utility model are: the unidirectional liquid-conducting film in the moisture barrier layer can prevent the liquid from re-seeding; the non-woven fabric can temporarily store the liquid; The hyperbolic grooves on the surface of the non-woven fabric can further diffuse the liquid; the conical protrusions on the surface of the non-woven fabric can further prevent the liquid from re-seeding; the upper layer of polyurethane sponge can pre-disperse the liquid to the surface of the lower layer of polyurethane sponge, so that the liquid can be Fully diffused in the lower polyurethane sponge.

Description

A kind of diversion and moisture-proof diaper

technical field

The utility model relates to the technical field of diapers, in particular to a diaper for diversion and moisture isolation.

Background technique

The diversion layer in the diaper is a special non-woven material located between the surface layer and the absorbent core. Its function is to make the diaper absorb liquid quickly, effectively and evenly, avoiding the formation of excessive local absorption of SAP in the past. Blocking phenomenon, reducing the amount of diaper re-osmosis.

At present, hot air, spunbond, hot-rolled and other non-woven materials are commonly used in the current diversion layer. Although the price of hot air non-woven materials is slightly higher, because of its certain thickness and bulkiness, it can temporarily store liquids that are more than 10 times its own mass. It has excellent anti-rewet and is widely used.

Foreign companies such as Kimberly-Clark, Procter & Gamble, Unicharm and other companies have conducted research on the diversion layer earlier. In the US5665082 patent, the diversion layer is composed of cellulose air-laid and chemically bonded. In the US6479415B1 patent, a composite flow guiding layer is mentioned, the upper layer is composed of chemically bonded synthetic fibers, and the lower layer is composed of chemically bonded or thermally bonded fiber fibers; Woven materials can improve the permeability, reverse osmosis and conductivity of absorbent materials. Japan Unicharm Co., Ltd. combines typical thermally bonded nonwoven fabrics with thermoplastic monofilaments that are arranged in a straight line and parallel along the length direction (closely arranged, leaving only slight gaps), and make the filaments compounded on the fabric in the length of In the direction, wave-shaped peaks and valleys with the same spacing in the vertical direction are formed.

However, the low-cost diversion layer used in the existing diapers often has poor diversion effect, and the liquid cannot diffuse well in the diversion layer, resulting in the liquid diffusion mainly occurring in the core layer, and the formation of excessive liquid absorption in the core layer. The blockage of the gel increases the difficulty of the second and third liquid infiltration, resulting in a large amount of back seepage; and the high-quality diversion layer is generally expensive due to the high price of raw materials and complex manufacturing processes.

Utility model content

The technical problem to be solved by the utility model is to provide a diaper with low price and good effect of diversion and moisture isolation.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present invention is as follows: a diaper for water diversion and moisture insulation, comprising a diffusion layer, a moisture barrier layer and an absorption layer from top to bottom;

The diffusion layer includes an upper layer of polyurethane sponge and a lower layer of polyurethane sponge, the upper layer of polyurethane sponge is provided with a number of inclined channels along the circumference, the lower layer of polyurethane sponge is overlapped with multiple layers, and the inner layer of the lower layer of polyurethane sponge has longitudinal channels and transverse channels;

The moisture barrier layer includes a non-woven fabric and a unidirectional liquid guide film, the upper surface of the non-woven fabric is provided with a plurality of hyperbolic grooves, and the upper surface of the non-woven fabric is also provided with a plurality of conical protrusions, There are two unidirectional liquid guide films, and the two unidirectional liquid guide films are respectively arranged on the upper surface and the lower surface of the non-woven fabric;

The absorbent layer includes, from top to bottom, a top layer non-woven fabric, a polymer water-absorbing resin and a bottom layer non-woven fabric. The surface of the bottom layer non-woven fabric is provided with a non-gluing area and a gluing area at intervals, and the polymer water-absorbing resin is provided with in the glued area.

The beneficial effects of the utility model are as follows: the unidirectional liquid-conducting film in the moisture barrier layer can prevent the liquid from re-seeding; the non-woven fabric can temporarily store the liquid; the hyperbolic grooves on the surface of the non-woven fabric can further diffuse the liquid The conical convexity on the surface of the non-woven fabric can further prevent the liquid from re-seeding; the upper layer of polyurethane sponge can pre-disperse the liquid to the surface of the lower layer of polyurethane sponge, so that the liquid can fully diffuse in the lower layer of polyurethane sponge; and transverse channels, which can make the liquid infiltrate and diffuse at the same time, and has a simple structure and low cost; the lower layer of polyurethane is non-hydrophilic and has good permeability; the polymer water-absorbing resin in the absorbing layer is arranged at intervals and in the gluing area, so that the high The area of the molecular water absorbent resin and the liquid increases.

Description of drawings

1 is a schematic structural diagram of a specific embodiment of the present utility model diapers;

Fig. 2 is the surface structure schematic diagram of the upper layer polyurethane sponge of the specific embodiment of the present utility model;

3 is a schematic diagram of the surface structure of a non-woven fabric according to a specific embodiment of the present invention;

Description of labels: 1. Upper layer polyurethane sponge; 101, inclined channel; 2, lower layer polyurethane sponge; 3, non-woven fabric; 301, groove; 302, protrusion; 6. Polymer water-absorbing resin; 7. Bottom non-woven fabric.

Detailed ways

In order to describe in detail the technical content, achieved objects and effects of the present invention, the following descriptions are given with reference to the embodiments and the accompanying drawings.

The most critical concept of the present invention is that the diffusion layer can quickly diffuse the liquid to avoid the formation of gel blockage due to excessive liquid absorption;

Please refer to Figures 1 to 3, a water-conducting and moisture-proof diaper, comprising a diffusion layer, a moisture-proof layer and an absorbing layer from top to bottom;

The diffusion layer includes an upper layer of polyurethane sponge 1 and a lower layer of polyurethane sponge 2. The upper layer of polyurethane sponge 1 is provided with a number of inclined channels 101 along the circumference. The lower layer of polyurethane sponge 2 is overlapped with multiple layers. Longitudinal and transverse channels;

The moisture barrier layer includes a non-woven fabric 3 and a unidirectional liquid guide film 4. The upper surface of the non-woven fabric is provided with a number of hyperbolic grooves 301, and the upper surface of the non-woven fabric 3 is also provided with a plurality of cones. There are two unidirectional liquid guide films 4, and the two unidirectional liquid guide films 4 are respectively arranged on the upper surface and the lower surface of the non-woven fabric 3;

From top to bottom, the absorbing layer includes a top layer non-woven fabric 5, a polymer water-absorbing resin 6 and a bottom layer non-woven fabric 7. The surface of the bottom layer non-woven fabric 7 is spaced with a non-gluing area and a gluing area. The molecular water absorbent resin 6 is arranged in the gluing area.

As can be seen from the above description, the working process of the present invention is as follows: the liquid falls on the diffusion layer, and will flow into the lower layer polyurethane sponge 2 along the inclined channels 101 in the upper layer polyurethane sponge 1, so as to prevent the liquid from falling at the same place in the lower layer polyurethane sponge 2. Infiltration and diffusion cause the inner pores of the lower polyurethane sponge 2 to be damaged by liquid soaking. The longitudinal pores inside the lower polyurethane sponge 2 play a role of diversion, and the liquid will flow down along the longitudinal pores, while the horizontal pores play a role in diffusion. When the liquid falling from the vertical channel flows to the horizontal channel, it will flow to other directions along the horizontal channel to prevent the liquid from accumulating in the same position. Flowing to the non-woven fabric 3, the hyperbolic grooves on the surface of the non-woven fabric 3 can further diffuse the liquid, and the liquid flows through the unidirectional liquid guide film 4 to the lower absorbing layer. The infiltration speed will be slightly slower. When the amount of liquid infiltration at the same time is large, the non-woven fabric 3 can temporarily store the liquid, and the conical protrusions 302 on the surface of the non-woven fabric 3 make the non-woven fabric 3 . There is a gap between the upper surface and the unidirectional liquid guide film 4, which can prevent the liquid stored in the non-woven fabric 3 from re-seeding. It can be absorbed by the surrounding polymer water absorbent resin 6 .

It can be seen from the above description that the beneficial effects of the present utility model are: the unidirectional liquid-conducting film in the moisture barrier layer can prevent the liquid from re-seeding; the non-woven fabric can temporarily store the liquid; the hyperbolic grooves on the surface of the non-woven fabric can It can further diffuse the liquid; the conical convexity on the surface of the non-woven fabric can further prevent the liquid from re-seeding; the upper layer of polyurethane sponge can pre-disperse the liquid to the surface of the lower layer of polyurethane sponge, so that the liquid can be fully diffused in the lower layer of polyurethane sponge; the lower layer of polyurethane sponge The interior of the sea is provided with vertical and horizontal channels, which can make the liquid seep down and realize diffusion at the same time, and the structure is simple and low-cost; the lower layer of polyurethane sea is not hydrophilic and has good permeability; the polymer water-absorbing resin in the absorbing layer is spaced and glued In the area, the area between the polymer water-absorbent resin and the liquid is increased.

Further, the surface of the bottom non-woven fabric 7 includes a longitudinal non-gluing area and a transverse non-gluing area, the longitudinal non-gluing area is distributed along the length direction of the absorbing layer, and the lateral non-gluing area and the longitudinal non-gluing area are The areas intersect perpendicularly with each other, and the longitudinal non-gluing area and the lateral non-gluing area enclose a square gluing area.

Further, a bacteriostatic agent layer is provided between the moisture barrier layer and the diffusion layer.

It can be seen from the above description that the bacteriostatic agent of the bacteriostatic layer can ensure that the diaper will not breed bacteria when it is used.

Further, the thickness of the upper layer of polyurethane sponge 1 is 2-4 mm.

Further, the inclination angle of the inclined channels in the upper layer polyurethane sponge 1 is 130-160 degrees.

Further, the thickness of the lower layer polyurethane sponge 2 is 2-3 mm.

It can be seen from the above description that when the thickness of the lower sponge layer is 2-3 mm, it is sufficient to fully diffuse the liquid and save raw materials.

Further, the density of the lower layer polyurethane sponge 2 is 15-25 kg/m ³ .

Example 1

A water-conducting and moisture-proof diaper, comprising a diffusion layer, a moisture-proof layer and an absorption layer from top to bottom;

The diffusion layer includes an upper layer of polyurethane sponge 1 and a lower layer of polyurethane sponge 2. The upper layer of polyurethane sponge 1 is provided with a number of inclined channels 101 along the circumference. The thickness of the upper layer of polyurethane sponge 1 is 2-4 mm. The inclination angle of the inclined channel is 130-160 degrees, the lower layer of polyurethane sponge 2 is overlapped with multiple layers, the lower layer of polyurethane sponge 2 has longitudinal channels and transverse channels, the thickness of the lower layer of polyurethane sponge 2 is 2-3mm, the The density of the lower layer polyurethane sponge 2 is 15-25kg/m ³ ;

The moisture barrier layer includes a non-woven fabric 3 and a unidirectional liquid guide film 4. The upper surface of the non-woven fabric is provided with a number of hyperbolic grooves 301, and the upper surface of the non-woven fabric 3 is also provided with a plurality of cones. There are two unidirectional liquid guide films 4, and the two unidirectional liquid guide films 4 are respectively arranged on the upper surface and the lower surface of the non-woven fabric 3;

The absorbing layer includes a top layer non-woven fabric 5, a polymer water-absorbing resin 6 and a bottom layer non-woven fabric 7 from top to bottom. The longitudinal non-gluing area is distributed along the length direction of the absorbing layer, the lateral non-gluing area and the longitudinal non-gluing area intersect with each other perpendicularly, and the longitudinal non-gluing area and the lateral non-gluing area enclose a square gluing area, The polymer water-absorbing resin 6 is arranged in the gluing area.

A bacteriostatic agent layer is arranged between the moisture barrier layer and the diffusion layer.

To sum up, the beneficial effects of the present invention are as follows: the unidirectional liquid-guiding film in the moisture barrier layer can prevent the liquid from re-seeding; the non-woven fabric can temporarily store the liquid; the hyperbolic grooves on the surface of the non-woven fabric can It can further diffuse the liquid; the conical convexity on the surface of the non-woven fabric can further prevent the liquid from re-seeding; the upper layer of polyurethane sponge can pre-disperse the liquid to the surface of the lower layer of polyurethane sponge, so that the liquid can be fully diffused in the lower layer of polyurethane sponge; the lower layer of polyurethane sponge The interior of the sea is provided with vertical and horizontal channels, which can allow the liquid to infiltrate and diffuse at the same time, and has a simple structure and low cost; the lower layer of polyurethane sea is not hydrophilic and has good permeability; the polymer water-absorbing resin in the absorbing layer is spaced and glued. In the area, the area between the polymer water-absorbent resin and the liquid is increased. The antibacterial agent of the antibacterial layer can ensure that the diaper will not breed bacteria when it is used. When the thickness of the lower sponge layer is 2-3mm, it is enough to fully diffuse the liquid and save raw materials.

The above are only the embodiments of the present utility model, and are not intended to limit the scope of the present utility model patent. All equivalent transformations made by using the contents of the present utility model description and accompanying drawings, or directly or indirectly applied in related technical fields, are the same as The principles are included in the scope of patent protection of the present invention.

Claims (7)

1. A water-conducting and moisture-proof diaper, characterized in that, from top to bottom, it comprises a diffusion layer, a moisture barrier layer and an absorbing layer; The diffusion layer includes an upper layer of polyurethane sponge and a lower layer of polyurethane sponge, the upper layer of polyurethane sponge is provided with a number of inclined channels along the circumference, the lower layer of polyurethane sponge is overlapped with multiple layers, and the inner layer of the lower layer of polyurethane sponge has longitudinal channels and transverse channels; The moisture barrier layer includes a non-woven fabric and a unidirectional liquid guide film. The upper surface of the non-woven fabric is provided with a number of hyperbolic grooves, and the upper surface of the non-woven fabric is also provided with a plurality of conical protrusions. There are two unidirectional liquid guide films, and the two unidirectional liquid guide films are respectively arranged on the upper surface and the lower surface of the non-woven fabric; The absorbent layer includes, from top to bottom, a top layer non-woven fabric, a polymer water-absorbing resin and a bottom layer non-woven fabric. The surface of the bottom layer non-woven fabric is provided with a non-gluing area and a gluing area at intervals, and the polymer water-absorbing resin is provided with in the glued area. 2. The diverting and moisture-proofing diaper according to claim 1, wherein the non-woven surface of the bottom layer comprises a longitudinal non-gluing area and a transverse non-gluing area, and the longitudinal non-gluing area is along the length of the absorbent layer Direction distribution, the lateral non-gluing area and the longitudinal non-gluing area intersect with each other perpendicularly, and the longitudinal non-gluing area and the lateral non-gluing area enclose a square gluing area. 3 . The diverting and moisture-proof diaper according to claim 2 , wherein a bacteriostatic agent layer is provided between the moisture-proof layer and the diffusion layer. 4 . 4 . The diverting and moisture-proof diaper according to claim 1 , wherein the thickness of the upper layer of polyurethane sponge is 2-4 mm. 5 . 5 . The diverting and moisture-proof diaper according to claim 1 , wherein the inclination angle of the inclined channels in the upper layer of the polyurethane sponge is 130-160 degrees. 6 . 6 . The diverting and moisture-proof diaper according to claim 1 , wherein the thickness of the lower layer of polyurethane sponge is 2-3 mm. 7 . 7 . The diverting and moisture-proof diaper according to claim 1 , wherein the lower layer polyurethane sponge has a density of 15-25 kg/m ³ .

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