Side leakage prevention composite non-woven fabric, manufacturing method thereof and absorption product

Abstract

The composite non-woven fabric comprises an upper-layer non-woven fabric body and a lower-layer non-woven fabric body, the composite non-woven fabric body is provided with protruding areas and hole opening areas, the hole opening areas are provided with a plurality of funnel-shaped holes, the protruding areas are located on the two sides of the hole opening areas, and the lower-layer non-woven fabric body is located on the two sides of the hole opening areas. The non-woven fabric comprises at least one row of protruding parts extending in the longitudinal direction and a flat part, each protruding part is provided with an internal independent space located between the upper-layer non-woven fabric and the lower-layer non-woven fabric, and a hydrophobic coating is arranged on the inner surface of the protruding area of the upper-layer non-woven fabric. Compared with non-woven fabric with hydrophobic coatings on the outer surfaces of the protrusions, when the non-woven fabric is used, body fluid can be rapidly absorbed by the surface hydrophilic fibers when making contact with the surfaces of the protrusion areas and guided to the hydrophilic open pore areas by the hydrophobic coatings on the inner surfaces of the protrusion areas, that is, the body fluid is firstly absorbed and then guided in the non-woven fabric; the body fluid is further prevented from slipping out of the absorption product, the protruding areas further play a role of a leakage-proof retaining wall, and the absorption product is dry and comfortable to use.

Description

Technical Field

[0001] The present invention relates to the technical field of nonwoven fabrics, and in particular to a composite nonwoven fabric which can prevent body fluid leakage and has fast absorption, and a manufacturing method thereof and an absorbent product. Background Art

[0002] Non-woven fabrics are soft and fluffy and are easily accepted by people. In order to achieve fast absorption and prevent side leakage, non-woven fabrics are generally made of hydrophilic fibers. However, although hydrophilic non-woven fabrics can quickly absorb body fluids during use, the body fluid diffusion area on the surface of the non-woven fabric is large and it is easy to diffuse to the edge of the absorbent product. Even if embossed protrusions or guide strips are formed on both sides of the absorbent product, there is still a risk of body fluid diffusion and side leakage. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a composite non-woven fabric which prevents the lateral leakage of body fluids, has a fast absorption speed and a dry surface, and a manufacturing method and an absorbent product thereof.

[0004] The technical solution of the present invention is as follows: A side leakage prevention composite nonwoven fabric, the composite nonwoven fabric comprising an upper nonwoven fabric and a lower nonwoven fabric; the upper nonwoven fabric and the lower nonwoven fabric are both hydrophilic nonwoven fabrics; the composite nonwoven fabric has a raised area and an open hole area; the open hole area has a plurality of funnel-shaped open holes; the raised area is located on both sides of the open hole area in the lateral direction, and comprises at least one row of raised portions extending in the longitudinal direction and at least one row of flat portions extending in the longitudinal direction; the raised portion has an internal independent space located between the upper nonwoven fabric and the lower nonwoven fabric; the upper nonwoven fabric has a hydrophobic coating on the inner surface of the raised area.

[0005] The upper nonwoven fabric is a hot air nonwoven fabric, a spunbond nonwoven fabric or a spunlace nonwoven fabric; the lower nonwoven fabric is a hot air nonwoven fabric, a spunbond nonwoven fabric or a spunlace nonwoven fabric.

[0006] The open hole area also has a plurality of embossed protrusions or embossed depressions.

[0007] The hydrophobic coating is only located on the inner surface of the raised portion of the raised area of ​​the upper non-woven fabric.

[0008] The hydrophobic coating is a functional hydrophobic coating.

[0009] The hydrophobic coating is a colored hydrophobic coating.

[0010] The flat portion of the raised area is distributed with first funnel-shaped openings.

[0011] An absorbent product comprising the above-mentioned side leakage prevention composite nonwoven fabric, wherein the side leakage prevention composite nonwoven fabric is located on the surface layer of the absorbent product, wherein: the open hole area is located in the middle of the absorption area of ​​the absorbent product, and the raised areas are located on both sides of the absorption area of ​​the absorbent product.

[0012] A method for manufacturing a side leakage-proof composite nonwoven fabric, characterized in that the main production steps include: (1) The upper nonwoven fabric enters the coating, embossing and punching device; Wherein: the coating embossing and perforating device comprises a liquid upper roller, a coating roller, an embossing convex roller and a needle roller; the liquid upper roller contacts the hydrophobic agent in the liquid storage tank, the coating roller contacts the liquid upper roller and the embossing convex roller respectively, and the embossing convex roller meshes with the needle roller, wherein: the needle roller has a punching needle area and a concave hole area, the punching needle area has a punching needle, and the concave hole area has a concave hole; the embossing convex roller has an embossing convex area and a concave area corresponding to the punching needles of the needle roller, the embossing convex area is located on both sides of the concave area, and has at least one row of embossing convexities distributed along the circumferential direction of the embossing convex roller; during operation, the hydrophobic agent in the liquid storage tank is carried to the liquid coating roller through the liquid upper roller, and the hydrophobic agent is transferred to the embossing convex roller when the coating roller and the embossing convex roller are in contact; When the upper nonwoven fabric enters between the embossing roller and the needle roller, the heated embossing roller squeezes the fibers of the upper nonwoven fabric into the concave holes of the needle roller, and the fiber surface is melted and solidified to form a raised portion and a flat portion, and the hydrophobic agent on the embossing roller is coated on the inner surface of the upper nonwoven fabric in the raised area to form a hydrophobic coating, while the punching needles on the heated needle roller pierce the upper nonwoven fabric, and the fiber surface is melted and solidified to form a funnel-shaped opening; (2) The upper nonwoven fabric is coated, embossed and punched in step (1) and then enters a compounding device to be compounded with the lower nonwoven fabric; The composite device is a composite roller meshed with a needle roller, and the surface of the composite roller has composite depressions corresponding to the punching needles of the needle roller; during operation, the punching needles on the needle roller pierce the upper non-woven fabric from the funnel-shaped openings again, and simultaneously pierce the stacked lower non-woven fabrics, the fiber surface is melted and formed to form the funnel-shaped openings and the upper non-woven fabric and the lower non-woven fabric are composited together to form a side leakage-proof composite non-woven fabric.

[0013] The embossing roller has a first embossing protrusion in a concave area corresponding to the perforating needles of the needle roller.

[0014] The needle roller also has a second embossing protrusion, and the second embossing protrusion on the needle roller is located in the punching needle area.

[0015] The concave hole area of ​​the needle roller has first perforating needles.

[0016] The hydrophobic agent is a functional hydrophobic agent and / or a colored hydrophobic agent.

[0017] The coating roller is a brush roller or a sponge roller; the distribution position of the brush on the brush roller or the sponge on the sponge roller corresponds to the embossed convex area of ​​the embossing convex roller.

[0018] The upper non-woven fabric and the lower non-woven fabric are composited by hot melt adhesive or ultrasonic welding.

[0019] After adopting the above scheme, the side leakage prevention composite non-woven fabric of the present invention can be used for the surface layer of sanitary napkins or diapers. Since the raised areas of the composite non-woven fabric are located on both sides of the open hole area, when the body fluid reaches the surface of the composite non-woven fabric, the body fluid can quickly penetrate into the absorbent layer in the open hole area, and the excess body fluid can also be prevented from further diffusing to both sides and forming side leakage under the blocking effect of the raised areas on both sides. In addition, the inner surface of the raised area of ​​the upper non-woven fabric has a hydrophobic coating, and the outer surface of the upper non-woven fabric is hydrophilic. Compared with the non-woven fabric with a hydrophobic coating on the raised outer surface, the body fluid can also be quickly absorbed by the surface hydrophilic fibers when it contacts the surface of the raised area. The body fluid is absorbed and guided by the hydrophobic coating on the inner surface of the raised area to the hydrophilic open hole area, that is, the body fluid is first absorbed and then guided inside the non-woven fabric, which further prevents the body fluid from leaking out of the absorbent product, and also makes the raised area play the role of a leak-proof barrier, making it drier to use; at the same time, during the use of the absorbent product, the hydrophobic coating on the inner surface of the upper non-woven fabric in the raised area can also effectively prevent the body fluid from returning to the surface of the non-woven fabric again; in addition, during the production process, the two layers of non-woven fabric are embossed, punched, coated and composited simultaneously through the coating, embossing and punching device and the composite device, which reduces the production steps and saves production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic cross-sectional view of the side leakage prevention composite nonwoven fabric of Example 1 of the present invention; Figure 2 Schematic diagram of the side leakage prevention composite nonwoven fabric of Example 1 of the present invention; Figure 3 This is a schematic diagram of the production process of the side leakage-proof composite nonwoven fabric according to Example 1 of the present invention; Figure 4 Schematic cross-sectional view of the side leakage prevention composite nonwoven fabric of Example 2 of the present invention; Figure 5 Schematic diagram of the side leakage prevention composite nonwoven fabric of Example 2 of the present invention; Figure 6 It is a schematic diagram of a partial production process of the side leakage-proof composite nonwoven fabric of Example 2 of the present invention; Figure 7 Schematic cross-sectional view of the side leakage prevention composite nonwoven fabric of Example 3 of the present invention; Figure 8 Schematic diagram of the side leakage prevention composite nonwoven fabric of Example 3 of the present invention; Fig. 9 It is a partial cross-sectional view of an embossing roller and a needle roller along the axial direction in the production process of the side leakage prevention composite non-woven fabric of Example 3 of the present invention; Fig.10 It is a partial cross-sectional view along the axial direction of another embossing roller and a needle roller in the production process of the side leakage prevention composite non-woven fabric of Example 3 of the present invention.

[0021] Description of labels: Example 1 An upper nonwoven fabric 1, a lower nonwoven fabric 2, and a side leakage-proof composite nonwoven fabric 12; Raised area a, raised portion a1, flat portion a2, open area b, funnel-shaped open pore b1, hydrophobic coating c; Embossing roller A, embossing convex A1, concave A2; Needle roller B, concave hole B1, punching needle B2; Liquid storage tank C, liquid application roller D, liquid coating roller E, composite roller F, composite depression F1; Example 3 Embossed raised portion b2, first funnel-shaped opening a3, first embossed raised portion A3, first punching needle B3, second embossed raised portion B4. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be further illustrated and described below through specific implementation modes in combination with the accompanying drawings.

[0023] Example 1 like Figure 1 and Figure 2 As shown, the present invention discloses a side leakage prevention composite non-woven fabric 12, which is composed of an upper non-woven fabric 1 and a lower non-woven fabric 2. The composite non-woven fabric 12 has a raised area a and an open area b, wherein the open area b has a plurality of funnel-shaped openings b1, and the raised area a is located on both sides of the open area b in the transverse direction, and comprises at least one row of raised portions a1 extending in the longitudinal direction and a flat portion a2, wherein the raised portion a1 can be a continuous raised portion extending in the longitudinal direction, or a plurality of discontinuous raised portions extending in the longitudinal direction, and in Example 1, the raised portion a1 is a plurality of discontinuous raised portions extending in the longitudinal direction, and the raised portion a1 has an internal independent space located between the upper non-woven fabric 1 and the lower non-woven fabric 2, that is, the raised portion a1 is hollow, and a hydrophobic coating c is provided on the inner surface of the raised area a of the upper non-woven fabric 1. Among them: the non-woven fabric can be hot air non-woven fabric, spunbond non-woven fabric or spunlace non-woven fabric, and the upper non-woven fabric 1 and the lower non-woven fabric 2 can both be hydrophilic non-woven fabrics; in Example 1, the upper non-woven fabric and the lower non-woven fabric are both hot air non-woven fabrics.

[0024] like Figure 3 As shown, the side leakage prevention composite nonwoven fabric 12 of the present invention is manufactured by the following method: (1) The upper nonwoven fabric 1 enters the coating, embossing and perforating device, wherein: the coating, embossing and perforating device comprises a liquid-applying roller D, a liquid-applying roller E, an embossing convex roller A and a needle roller B, the liquid-applying roller D contacts the hydrophobic agent in the liquid storage tank C, the liquid-applying roller E contacts the liquid-applying roller D and the embossing convex roller A respectively, the embossing convex roller A meshes with the needle roller B, wherein: the needle roller B has a perforating needle area and a concave hole area, the perforating needle area has perforating needles B2, and the concave hole area has concave holes B1; specifically, in the figure, the needle roller B may have perforating needles B2 in the middle of the axial direction, and concave holes B1 at both ends. The embossed roller A has an embossed raised area and a recessed area corresponding to the punching needles B2 of the needle roller B. The recessed area has a recess A2. The embossed raised area is located on both sides of the recessed area and has at least one row of embossed protrusions A1 distributed along the circumferential direction of the embossed roller A. Specifically, in the figure, the axial middle part of the embossed roller A may have a recess A2, and the two ends may have embossed protrusions A1. In this embodiment, the coating roller E may be a brush roller or a sponge roller, and the distribution position of the brush on the brush roller or the sponge on the sponge roller corresponds to the embossed raised area of ​​the embossed roller A. During operation, the hydrophobic agent in the liquid storage tank C is carried to the coating roller E through the liquid feeding roller D. When the coating roller E and the embossed roller A are in contact, the hydrophobic agent is transferred to the embossed roller A, wherein: in this embodiment, the coating roller E is in full contact with the embossed roller A, that is, in contact with the bottom of the embossed protrusion A1 in the raised area; when the upper non-woven fabric 1 enters the embossed roller A and the needle roller B. During the operation, the heated embossing roller A squeezes the fibers of the upper nonwoven fabric 1 into the concave holes B1 of the needle roller B, and the fiber surfaces are melted and solidified to form raised portions a1 and flat portions a2, and the hydrophobic agent on the embossing roller A is coated on the inner surface of the raised area a of the upper nonwoven fabric to form a hydrophobic coating c, that is, both the raised portions a1 and the flat portions a2 of the upper nonwoven fabric 1 have the hydrophobic coating c, and at the same time, the punching needles B2 on the heated needle roller B pierce the upper nonwoven fabric 1, and the fiber surfaces are melted and solidified to form funnel-shaped openings b1; (2) After being coated, embossed and punched, the upper non-woven fabric 1 enters a composite device for composite with the lower non-woven fabric 2. The composite device is a composite roller F meshing with a needle roller B. The composite roller F has a composite depression F1 on its surface corresponding to the punching needles B2 of the needle roller B. During operation, the punching needles B2 on the needle roller B pierce the upper non-woven fabric 1 again from the funnel-shaped openings b1, and at the same time pierce the stacked lower non-woven fabric 2. The fiber surface is melted and shaped to form the funnel-shaped openings b1 and the two non-woven fabrics are composited together to form a side leakage-proof composite non-woven fabric 12.

[0025] The upper nonwoven fabric 1 and the lower nonwoven fabric 2 can also be combined with hot melt adhesive or ultrasonic welding during the compounding process to increase the compounding strength and make the bonding between the two layers more firm.

[0026] The anti-side leakage composite non-woven fabric 12 can be used in absorbent products, including sanitary napkins, sanitary pads, diapers, etc. The absorbent product can be composed of a surface layer, an absorption layer and a bottom layer, wherein: the anti-side leakage composite non-woven fabric 12 is located on the surface layer of the absorbent product, wherein: the open hole area b is located in the middle of the absorption area of ​​the absorbent product, and the raised area a is located on both sides of the absorption area of ​​the absorbent product. When the consumer is in use, when the discharged body fluid contacts the surface of the anti-side leakage composite non-woven fabric 12, the body fluid can quickly penetrate into the absorption layer in the open hole area b, and the excess body fluid can also be prevented from further diffusing to both sides and forming side leakage under the blocking effect of the raised areas a on both sides, and the inner surface of the raised area a of the upper non-woven fabric 1 has a hydrophobic coating c, and the outer surface of the upper non-woven fabric 1 is hydrophilic. Compared with the non-woven fabric with a hydrophobic coating on the raised outer surface, the body fluid can also be quickly absorbed by the surface hydrophilic fibers and be absorbed by the outer surface of the raised area a when it contacts the outer surface of the raised area a. The hydrophobic coating c on the inner surface of the raised area a is directed to the hydrophilic open hole area b, that is, the body fluid is first absorbed and then directed inside the non-woven fabric, further preventing the body fluid from leaking out of the absorbent product, and also making the raised area play a role of a leak-proof barrier, making it drier to use; the hydrophobic coating c can be a functional hydrophobic coating, such as an antibacterial hydrophobic coating, which can also play an antibacterial and bactericidal role in preventing the side leakage of body fluids; the hydrophobic coating c can also be a colored hydrophobic coating, which can effectively increase the visual appeal and market competitiveness of the product.

[0027] Example 2 like Figure 4 and Figure 5 As shown, the present invention discloses a side leakage prevention composite non-woven fabric 12, which is composed of an upper non-woven fabric 1 and a lower non-woven fabric 2. The composite non-woven fabric 12 has a raised area a and an open area b, wherein the open area b has a plurality of funnel-shaped openings b1, and the raised area a is located on both sides of the open area b in the transverse direction, and comprises at least one row of raised portions a1 extending in the longitudinal direction and a flat portion a2, wherein the raised portion a1 can be a continuous raised portion extending in the longitudinal direction, or a plurality of discontinuous raised portions extending in the longitudinal direction, and in Example 2, the raised portion a1 is a continuous raised portion extending in the longitudinal direction, and the raised portion a1 has an internal independent space located between the upper non-woven fabric 1 and the lower non-woven fabric 2, that is, the raised portion a1 is hollow, and only the inner surface of the raised portion a1 of the upper non-woven fabric 1 has a hydrophobic coating c. Wherein: the non-woven fabric can be hot air non-woven fabric, spunbond non-woven fabric or spunlace non-woven fabric. In Example 2, the upper layer of non-woven fabric is pure cotton spunlace non-woven fabric, and the lower layer of non-woven fabric is hot air non-woven fabric. like Figure 6As shown, the manufacturing method of the anti-side leakage composite non-woven fabric 12 of the present invention is the same as that of Example 1: in this embodiment, the coating roller E only contacts the embossed protrusions A1 on the embossed roller A, that is, only the embossed protrusions A1 in the raised area carry a hydrophobic agent; when the upper non-woven fabric 1 enters the coating, embossing and punching device, the hydrophobic agent carried on the embossed protrusions A1 is coated only on the inner surface of the raised portion a1 of the upper non-woven fabric 1 to form a hydrophobic coating c, that is, the raised portion a1 of the upper non-woven fabric has a hydrophobic coating c, and the flat portion a2 has no hydrophobic coating c. In the present embodiment 2, the hydrophobic coating c is only located on the inner surface of the raised portion a1 of the upper non-woven fabric. When in use, body fluid can quickly penetrate into the absorbent layer in the open hole area b, and excess body fluid can also be prevented from further diffusing to both sides and forming side leakage under the blocking effect of the raised areas a on both sides. In addition, the inner surface of the raised portion a1 of the upper non-woven fabric has the hydrophobic coating c, and the outer surface of the upper non-woven fabric is hydrophilic. Compared with the non-woven fabric with the hydrophobic coating on the raised outer surface, the body fluid can also be quickly absorbed by the surface hydrophilic fibers and absorbed by the inner surface of the raised portion a1 when it contacts the outer surface of the raised area a. The hydrophobic coating c is directed to the adjacent flat part a2 for penetration absorption, that is, the body fluid is first absorbed and then directed inside the non-woven fabric. Since the flat part a2 is adjacent to the opening area b and the side of the absorbent product, the flat part a2 can absorb excess body fluid, which can further prevent the body fluid from leaking out of the absorbent product, and also make the raised area a more effective as a leak-proof barrier. At the same time, the body fluid may return to the upper non-woven fabric due to external force after absorption, and the hydrophobic coating c on the inner surface of the raised part a1 of the upper non-woven fabric will prevent the body fluid from seeping back, making it drier and more comfortable to use. In addition, during the production process, the two layers of non-woven fabric are embossed, punched, coated, and composited simultaneously through the coating, embossing, and punching device and the composite device, which reduces the production steps and saves production costs. Example 3 like Figure 7 and Figure 8As shown, the present invention discloses a side leakage prevention composite non-woven fabric 12, which is composed of an upper non-woven fabric 1 and a lower non-woven fabric 2. The composite non-woven fabric 12 has a raised area a and an opening area b, wherein the opening area b has a plurality of funnel-shaped openings b1, and the opening area b also has a plurality of embossed raised portions b2. The raised area a is located on both sides of the opening area b in the transverse direction, and comprises at least one row of raised portions a1 and a flat portion a2 extending in the longitudinal direction, and a first funnel-shaped opening a3 is also distributed in the flat portion. The raised portion a1 can be a continuous raised portion extending in the longitudinal direction, or a plurality of discontinuous raised portions extending in the longitudinal direction. In Example 3, the raised portion a1 is a continuous raised portion extending in the longitudinal direction, and the raised portion a1 has an internal independent space located between the upper non-woven fabric 1 and the lower non-woven fabric 2, that is, the raised portion a1 is hollow, and a hydrophobic coating c is provided only on the inner surface of the raised portion a1 of the upper non-woven fabric 1. Wherein: the non-woven fabric can be hot air non-woven fabric, spunbond non-woven fabric or spunlace non-woven fabric. In Example 3, the upper layer of non-woven fabric is hot air non-woven fabric, and the lower layer of non-woven fabric is spunbond non-woven fabric.

[0028] like Fig. 9 As shown, the manufacturing method of the side leakage prevention composite non-woven fabric in Example 3 is the same as that in Example 2, except that the embossing roller A has a first embossed protrusion A3 in the recessed area corresponding to the punching needle B2 of the needle roller B, and a plurality of embossed protrusions b2 can be formed in the opening area b of the side leakage prevention composite non-woven fabric 12 through the first embossed protrusion A3. The embossed protrusions b2 can further reduce the contact area between the non-woven fabric and the human body, reduce adhesion, and the embossed protrusions b2 increase the three-dimensional thickness of the opening area b, play an isolating role, and can effectively prevent the back-seepage of body fluids; of course, a second embossed protrusion B4 can also be provided in the punching needle area of ​​the needle roller B, such as Fig.10 As shown, a plurality of embossed depressions (not shown) are formed in the opening area b of the anti-side leakage composite non-woven fabric 12, which can also play a role in reducing the contact area of ​​the human body; the concave hole area of ​​the needle roller B also has a first punching needle B3, through which there is a first punching needle B3, such as Fig. 9 and Fig.10 As shown, a first funnel-shaped opening a3 can be formed in the flat portion a2 of the raised area of ​​the anti-side leakage composite non-woven fabric 12, and the first funnel-shaped opening a3 can accelerate the absorption of body fluids blocked by the raised portion to further prevent side leakage of body fluids.

[0029] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A side leakage-proof composite nonwoven fabric, characterized in that: The composite nonwoven fabric comprises an upper nonwoven fabric and a lower nonwoven fabric; The upper non-woven fabric and the lower non-woven fabric are both hydrophilic non-woven fabrics; The composite nonwoven fabric has a raised area and an open hole area; The opening area has a plurality of funnel-shaped openings; The convex area is located on both sides of the opening area in the transverse direction, and includes at least one row of convex parts extending in the longitudinal direction and at least one row of flat parts extending in the longitudinal direction; The raised portion has an internal independent space between the upper nonwoven fabric and the lower nonwoven fabric; The upper nonwoven fabric has a hydrophobic coating on the inner surface of the raised area.

2. The side leakage preventing composite nonwoven fabric according to claim 1, characterized in that: The upper nonwoven fabric is a hot air nonwoven fabric, a spunbond nonwoven fabric or a spunlace nonwoven fabric; the lower nonwoven fabric is a hot air nonwoven fabric, a spunbond nonwoven fabric or a spunlace nonwoven fabric.

3. The side leakage preventing composite nonwoven fabric according to claim 1, characterized in that: The open hole area also has a plurality of embossed protrusions or embossed depressions.

4. The side leakage preventing composite nonwoven fabric according to claim 1, characterized in that: The hydrophobic coating is only located on the inner surface of the raised portion of the raised area of ​​the upper non-woven fabric.

5. The side leakage preventing composite nonwoven fabric according to claim 1, characterized in that: The hydrophobic coating is a functional hydrophobic coating and / or a colored hydrophobic coating.

6. The side leakage preventing composite nonwoven fabric according to claim 1, characterized in that: The flat portion of the raised area is distributed with first funnel-shaped openings.

7. An absorbent product comprising the side leakage preventing composite nonwoven fabric according to any one of claims 1 to 6, characterized in that: The side leakage prevention composite nonwoven fabric is located on the surface layer of the absorbent product, wherein: the opening area is located in the middle of the absorption area of ​​the absorbent product, and the convex area is located on both sides of the absorption area of ​​the absorbent product.

8. A method for manufacturing a side leakage-proof composite nonwoven fabric, characterized in that: The main production steps include: (1) The upper nonwoven fabric enters the coating, embossing and punching device; Wherein: the coating embossing and perforating device comprises a liquid upper roller, a coating roller, an embossing convex roller and a needle roller; the liquid upper roller contacts the hydrophobic agent in the liquid storage tank, the coating roller contacts the liquid upper roller and the embossing convex roller respectively, and the embossing convex roller meshes with the needle roller, wherein: the needle roller has a punching needle area and a concave hole area, the punching needle area has a punching needle, and the concave hole area has a concave hole; the embossing convex roller has an embossing convex area and a concave area corresponding to the punching needles of the needle roller, the embossing convex area is located on both sides of the concave area, and has at least one row of embossing convexities distributed along the circumferential direction of the embossing convex roller; during operation, the hydrophobic agent in the liquid storage tank is carried to the liquid coating roller through the liquid upper roller, and the hydrophobic agent is transferred to the embossing convex roller when the coating roller and the embossing convex roller are in contact; When the upper nonwoven fabric enters between the embossing roller and the needle roller, the heated embossing roller squeezes the fibers of the upper nonwoven fabric into the concave holes of the needle roller, and the fiber surface is melted and solidified to form a raised portion and a flat portion, and the hydrophobic agent on the embossing roller is coated on the inner surface of the upper nonwoven fabric in the raised area to form a hydrophobic coating, while the punching needles on the heated needle roller pierce the upper nonwoven fabric, and the fiber surface is melted and solidified to form a funnel-shaped opening; (2) The upper nonwoven fabric is coated, embossed and punched in step (1) and then enters a compounding device to be compounded with the lower nonwoven fabric; The composite device is a composite roller meshed with a needle roller, and the surface of the composite roller has composite depressions corresponding to the punching needles of the needle roller; during operation, the punching needles on the needle roller pierce the upper non-woven fabric from the funnel-shaped openings again, and simultaneously pierce the stacked lower non-woven fabrics, the fiber surface is melted and formed to form the funnel-shaped openings and the upper non-woven fabric and the lower non-woven fabric are composited together to form a side leakage-proof composite non-woven fabric.

9. The method for manufacturing a side leakage-proof composite nonwoven fabric according to claim 8, characterized in that: The embossing roller has a first embossing protrusion in a concave area corresponding to the perforating needles of the needle roller.

10. The method for manufacturing a side leakage-proof composite nonwoven fabric according to claim 8, characterized in that: The needle roller also has a second embossing protrusion, and the second embossing protrusion on the needle roller is located in the punching needle area.

11. The method for manufacturing a side leakage-proof composite nonwoven fabric according to claim 8, characterized in that: The concave hole area of ​​the needle roller has first perforating needles.

12. The method for manufacturing a side leakage-proof composite nonwoven fabric according to claim 8, characterized in that: The hydrophobic agent is a functional hydrophobic agent and / or a colored hydrophobic agent.

13. The method for manufacturing a side leakage-proof composite nonwoven fabric according to claim 8, characterized in that: The coating roller is a brush roller or a sponge roller; the distribution position of the brush on the brush roller or the sponge on the sponge roller corresponds to the embossed convex area of ​​the embossing convex roller.

14. The method for manufacturing a side leakage-proof composite nonwoven fabric according to claim 8, characterized in that: The upper non-woven fabric and the lower non-woven fabric are composited by hot melt adhesive or ultrasonic welding.

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