CN209734340U

CN209734340U - High-permeability 3D surface layer for disposable absorbent article

Info

Publication number: CN209734340U
Application number: CN201821699496.6U
Authority: CN
Inventors: 张为
Original assignee: Hanshun (xiamen) Sanitary Products Co Ltd
Current assignee: Hanshun (xiamen) Sanitary Products Co Ltd
Priority date: 2018-10-19
Filing date: 2018-10-19
Publication date: 2019-12-06
Anticipated expiration: 2028-10-19

Abstract

The utility model relates to a disposable high permeability 3D surface course for absorbent articles, the 3D surface course comprises upper non-woven fabrics, lower floor's non-woven fabrics upper non-woven fabrics sets up the arch, bellied vertical projection face is circular, along the circumferencial direction of bellied lower edge align to grid at least 3 heat junctures, heat junctures is with upper non-woven fabrics, lower floor's non-woven fabrics connection and even as an organic whole, and support, fix the heat junctures, along the bellied circumferencial direction, set up one or more than one water conservancy diversion hole between every two adjacent heat junctures, make water conservancy diversion hole and heat junctures be located same circumference; the diversion pore is a semi-connected pore formed by vertically penetrating the upper non-woven fabric layer only or a fully-connected pore formed by vertically penetrating the upper non-woven fabric layer and the lower non-woven fabric layer simultaneously, so that the 3D surface layer has the advantages of good convex touch and rapid permeation and absorption.

Description

High-permeability 3D surface layer for disposable absorbent article

Technical Field

The utility model relates to a moisture absorption articles for use technical field, in particular to disposable high permeability 3D surface course for absorption articles for use.

Background

Infants and other persons who are unable to take care of themselves often wear absorbent articles such as diapers. The function of the absorbent article is that it contains the exudates and isolates them from the body of the wearer as well as from clothing and bedding. Absorbent articles typically consist of a liquid-pervious topsheet, a liquid-impervious backsheet, and an absorbent core disposed between the liquid-pervious topsheet and the liquid-impervious backsheet to absorb and contain liquid.

the surface layer material of the disposable absorption article can be divided into the following steps according to the web forming process of the material: hydrophilic spun-bonded nonwoven fabric, hydrophilic hot-rolled nonwoven fabric, and hydrophilic hot-air nonwoven fabric. The post-treatment process comprises the following steps: hydrophilic plain non-woven fabric, hydrophilic perforated non-woven fabric, embossed non-woven fabric and 3D salient point non-woven fabric. Generally, the facing material in disposable absorbent articles serves the following purposes: first, the facing layer material provides some fluid transport properties, including rapid acquisition of fluid that passes through the facing layer and is absorbed by the absorbent core, and prevention of "rewet" of fluid absorbed by the absorbent core, i.e., leakage back through the facing layer, wetting the wearer's skin, as long as fluid is absorbed by the absorbent core. Generally, the drier the skin-contacting surface, the more comfortable the absorbent article will feel. Second, the facing layer provides skin comfort by being compliant, soft feeling, dry, and non-irritating to the wearer's skin.

The 3D raised surface layer disclosed in the prior art generally consists of an upper layer of non-woven fabric and a lower layer of non-woven fabric, and six or eight thermal joints or a special hot embossing process are formed around the protrusions, so that the bonding of the upper and lower layers of non-woven fabrics and the fixation of the protrusions are realized, and flow guide pores are not distributed at intervals on the same approximate circumference of the thermal joints. Such as:

CN 104939980A discloses a disposable absorbent article surface layer material, wherein the convex part of the composite surface layer has a peak at the approximate center of the region surrounded by eight joint parts.

CN203263656U discloses a composite surface sheet of absorbent sanitary article, which is formed by a thermal bonding process to form a staggered arrangement of large convex bubbles and small convex bubbles.

CN 203677388U discloses a paper diaper with a 3D three-dimensional embossed surface layer, wherein the raised adhesive dots of the three-dimensional embossed surface layer are cross-shaped embossed dots.

CN 203873982U discloses a concave-convex three-dimensional skin-friendly surface layer of a paper diaper, which is a convex surface layer composed of special crimped fibers and concave-convex intervals.

CN 205515194U discloses a hygienic product knurling surface fabric, this knurling surface fabric by a plurality of evenly distributed big salient to and all be provided with a plurality of little salient of evenly distributed between the big salient and all around, and be provided with marginal pit between big and little salient.

CN 104138311 a discloses a disposable absorbent article having a topsheet embossed with a plurality of first embossings allowing liquid to flow therein, and a second embossings facilitating the flow of liquid therein being provided on the liquid-permeable topsheet at the gaps between the first embossings.

CN 204766191U discloses a diaper and a surface layer, wherein the salient points of the composite surface layer are circular embossing, hemispherical embossing, semi-elliptical embossing and the like.

CN1986210A discloses a nonwoven fabric with a combination of protrusions and depressions, wherein the depressions and the raised regions are formed by shrinkage of the fibers.

In the convex surface layer used in the prior art or disclosed in the prior art, a six-point or eight-point thermal joint point or a special hot embossing process is usually formed around the protrusion, so that the adhesion of the upper and lower layers of non-woven fabrics and the fixation of the protrusion are realized, but the water permeability of the convex surface layer is greatly reduced because the diversion pore is not arranged on the same approximate circumference of the thermal joint point.

The utility model discloses to the slow problem of infiltration that exists of bump among the prior art, provide a hot juncture and 3D surface course for absorption articles for use of water conservancy diversion hole interval arrangement. The 3D surface course constitute by upper and lower two-layer non-woven fabrics, form the arch with upper non-woven fabrics through protruding technology to under the effect of hot pressing roller or ultrasonic wave pressure point roller, form the thermal junction point more than three points around the arch, thereby realize the bonding of upper and lower floor's non-woven fabrics and to bellied fixed, the same approximate circumference or the same regular polygon of thermal junction point of 3D surface course on still interval distribution the water conservancy diversion hole. The water conservancy diversion hole can set up at upper non-woven fabrics alone or set up at lower floor's non-woven fabrics alone, also can set up simultaneously on upper and lower floor's non-woven fabrics, can also only set up in the middle zone or the subregion of compound surface course. The stability of the protruding shape of 3D surface course can be guaranteed to the thermojunction point, avoids collapsing after the pressurized, and the water conservancy diversion hole can accelerate liquid again to the infiltration rate of absorbing the core to use the 3D surface course to have good protruding sense of touch and the advantage of quick infiltration absorption concurrently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough, provide a hot juncture and 3D surface course for absorption articles for use of water conservancy diversion hole interval arrangement, for realizing above-mentioned purpose, the utility model discloses a following technical scheme:

The high-permeability 3D surface layer for the disposable absorption article is characterized in that the 3D surface layer consists of an upper layer of non-woven fabric and a lower layer of non-woven fabric, the upper layer of non-woven fabric is provided with a bulge, the vertical projection plane of the bulge is circular, at least 3 thermal joints are uniformly arranged along the circumferential direction of the lower edge of the bulge, the thermal joints connect and connect the upper layer of non-woven fabric and the lower layer of non-woven fabric into a whole and support and fix the thermal joints, and one or more than one diversion pore is arranged between every two adjacent thermal joints along the circumferential direction of the bulge, so that the diversion pores and the thermal joints are positioned on the same circumference; the flow guide pores are semi-communicated pores formed by vertically penetrating the upper non-woven fabric layer only or fully-communicated pores formed by vertically penetrating the upper non-woven fabric layer and the lower non-woven fabric layer simultaneously.

The number of the flow guide pores is the same as that of the thermal joints, and the distance between the flow guide pores and two adjacent thermal joints is equal.

The number of the flow guide pores and the number of the thermal joints are both 6, and 6 flow guide pores are arranged between the 6 thermal joints in a meta-position mode.

The heat junction points and the flow guide holes of the adjacent bulges are respectively overlapped.

The base material non-woven fabric is divided into a protruding area and a non-protruding area by the protrusions, and the non-protruding area is an area formed by enclosing 4 thermal bonding points and 4 flow guide holes.

Each row of the bulges are horizontally arranged in the transverse width direction of the 3D surface layer, but each row of the bulges are arranged in an oblique line shape along the longitudinal length direction of the 3D surface layer, and an included angle between a central point connecting line of the horizontally arranged bulges and a central point connecting line of the obliquely arranged bulges is an acute angle of 60-80 degrees.

Each protrusion and the adjacent protrusions are in tangent relation, a thermal joint or a flow guide pore is arranged at the tangent point, and the non-protrusion area is an area enclosed by 3 thermal joints and 3 flow guide pores.

The non-raised area is an area enclosed by 5 thermal joints and 5 flow guide pores.

The projections between the front horizontal arrangement and the rear horizontal arrangement are respectively in tangent connection with the projections of the front horizontal arrangement and the rear horizontal arrangement through a tangent point, the tangent point is provided with a heat joint point or a flow guide pore, a non-projection area is formed by enclosing 5 heat joint points and 5 flow guide pores, and the central points of the projections in tangent connection are connected to form a fold line.

The thermal joint or the flow guiding pore is in a circular dot shape, wherein the diameter of the thermal joint is 0.5-1.0mm, and the diameter of the flow guiding pore is 1.0-1.5 mm.

The utility model has the advantages that: the utility model provides a hot junction and 3D surface course for absorption articles for use of water conservancy diversion hole interval arrangement, this 3D surface course comprises upper and lower two-layer non-woven fabrics, forms the arch with upper non-woven fabrics through protruding technology to under the effect of hot pressure roller or ultrasonic wave pressure point roller, form the thermal junction point more than three points in bellied all around, thereby realize the bonding of upper and lower floor's non-woven fabrics and to bellied fixed. Still interval distribution is leading the water conservancy diversion hole on the same approximate circumference or same regular polygon of the hot juncture of 3D surface course, and on the one hand, the stability of the protruding shape of 3D surface course can be guaranteed to the hot juncture, collapses after avoiding the pressurized, and on the other hand, the water conservancy diversion hole can accelerate liquid again to the infiltration rate of absorption core to make the 3D surface course have good protruding sense of touch and the advantage of permeating absorption fast concurrently.

Drawings

Fig. 1 is a schematic structural view of the high permeability 3D surface layers of examples 1 and 2.

Fig. 2 is a schematic structural view of the high permeability 3D facing of example 3.

Fig. 3 is a schematic structural view of the high permeability 3D facing of example 4.

Fig. 4 is a schematic structural view of the high permeability 3D facing of example 5.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

example 1

The 3D surface layer for the disposable absorbent article of this embodiment is shown in fig. 1, and the 3D surface layer is composed of an upper layer nonwoven fabric and a lower layer nonwoven fabric, wherein the upper layer nonwoven fabric is provided with a protrusion 1 formed by a protrusion process, a vertical projection surface of the protrusion 1 is circular, at least 3 thermal joints, preferably 3 or 6 thermal joints, are uniformly arranged along a circumferential direction of a lower edge of the protrusion 1 by a hot pressing roller or an ultrasonic pressing roller, as shown in fig. 1, the 6 thermal joints (solid points) are a11, a12, a13, a14, a15, and a16, and the 6 thermal joints are uniformly arranged at the lower edge of the protrusion 1 and surround the protrusion 1, thereby playing a role of bonding the lower layer nonwoven fabric and fixing the protrusion 1. Although the thermal joint plays a good role in supporting and fixing the structure and stability of the protrusion 1, the penetration and diffusion speed of the 3D surface layer for the disposable absorbent article to liquid is greatly reduced in the using process.

In the present embodiment, on the basis of the above solution, one or more flow guiding apertures are provided between every two adjacent thermal junctions, the flow guiding apertures are also provided along the circumferential direction of the protrusion 1, and are located on the same circumference as the thermal junctions, and in a specific embodiment, one flow guiding aperture is preferably provided. As shown in fig. 1, a flow guiding aperture a22 is disposed between the thermal junctions a11 and a12, a flow guiding aperture a23 is disposed between the thermal junctions a12 and a13, and so on, 6 flow guiding apertures are arranged between 6 thermal junctions, which are a21, a22, a23, a24, a25, and a26, respectively, and the gaps between the flow guiding apertures and two adjacent thermal junctions may be equally spaced, but may not be equally spaced, and are preferably equally spaced in the specific embodiment.

After the 3D surface layer for the disposable absorption article is provided with the diversion holes, the permeation speed and the diffusion speed of liquid towards the direction of the absorption core on the 3D surface layer for the disposable absorption article are greatly increased, so that the 3D surface layer for the disposable absorption article has good protruding touch feeling and has the advantage of rapid permeation and absorption.

Example 2

This example further provides the structure of a 3D facing layer for a disposable absorbent article in addition to example 1. As shown in fig. 1, each two adjacent protrusions 1 have a cross-overlapped region therebetween, and the protrusions 1 divide the substrate nonwoven fabric into a protrusion region and a non-protrusion region (substrate nonwoven fabric), such as: the projection 1A, the projection 1B, the projection 1C, and the projection 1D have a non-projection region a3 therebetween.

In the cross overlapping area between each two adjacent protrusions 1, a thermal joint and a flow guiding pore are respectively arranged, wherein the thermal joint and the flow guiding pore of the adjacent protrusions are respectively overlapped, as shown in fig. 1, in the cross overlapping area of the protrusion 1A and the protrusion 1B, the thermal joint a12 of the protrusion 1A is overlapped with the thermal joint B12 of the protrusion 1B, and the flow guiding pore a23 of the protrusion 1A is overlapped with the flow guiding pore B23 of the protrusion 1B. The non-raised area a3 is an area consisting of 4 thermal joints and 4 flow guide pores.

The thermal joints or the flow guiding pores around the protrusion of this embodiment are all selected to be small round dot shapes, wherein the diameter of the thermal joints is 0.5-1.0mm, and the diameter of the flow guiding pores is 1.0-1.5 mm.

Example 3

As shown in fig. 2, in this embodiment, twelve points are distributed on the circumference of the same radius along the circumferential direction of the lower edge of the protrusion, six of which are heat-bonding points B1, and the other six are flow-guiding apertures B2, and the difference between this embodiment and embodiment 1 or embodiment 2 is that the protrusions are horizontally arranged in the transverse direction, but the protrusions between two adjacent rows are arranged in an oblique line, i.e. the angle between the connecting line B4 of the central points of the protrusions in the transverse direction and the connecting line B5 of the central points of the protrusions in the longitudinal direction is acute, preferably 60 ° -80 °.

The projections in the longitudinal direction are tangent to the projections arranged in the lateral direction and adjacent thereto, and at the tangent points, thermal joints or flow guide holes are provided, and the non-projection region B3 is a region consisting of 5 thermal joints and 5 flow guide holes.

Example 4

As shown in fig. 3, twelve points are distributed on the same radius of the circumference along the circumferential direction of the lower edge of the protrusion, six of which are thermal joints C1, and the other six of which are flow guide apertures C2, and the difference between the embodiment and the embodiment 3 is that the non-protrusion area C3 is an area formed by 3 thermal joints and 3 flow guide apertures.

Example 5

As shown in fig. 4, in this embodiment, twelve points are distributed on the same radius of the circumference along the circumferential direction of the lower edge of the projection, six of the projections are thermal joints D1, and the other six projections are flow guide holes D2, which is different from embodiment 3 in that a certain projection D5 distributed in the horizontal direction and two adjacent rows (front horizontal arrangement and rear horizontal arrangement) of projections D4 and D6 are staggered, the projections located between the front horizontal arrangement and the rear horizontal arrangement are respectively connected with the projections horizontally arranged in the front horizontal arrangement and the rear horizontal arrangement in a tangent manner through a tangent point, thermal joints or flow guide holes are arranged on the tangent points, a non-convex area is formed by enclosing 5 thermal joints and 5 flow guide holes, the central points of the mutually tangent and connected bulges are connected to form a fold line, namely, the center point connecting lines D7 of the protrusions D4, D5, D6 in the longitudinal direction are broken lines.

Although the present invention has been described in terms of specific embodiments, the scope of the present invention is not limited to the above-described specific embodiments, and various modifications, changes and substitutions of the present invention are within the scope of the present invention without departing from the spirit of the present invention.

Claims

1. Disposable high permeability 3D surface course for absorption articles for use, the 3D surface course comprises upper non-woven fabrics, lower floor's non-woven fabrics the upper non-woven fabrics sets up the arch, bellied vertical projection face is circular, along the at least 3 thermal joint points of bellied lower edge's circumferential direction align to grid, the thermal joint point is connected upper non-woven fabrics, lower floor's non-woven fabrics and even as an organic whole to support, be fixed thermal joint point, its characterized in that: one or more than one flow guide pore is arranged between every two adjacent thermal joints along the circumferential direction of the bulge, so that the flow guide pores and the thermal joints are positioned on the same circumference; the flow guide pores are semi-communicated pores formed by vertically penetrating the upper non-woven fabric layer only or fully-communicated pores formed by vertically penetrating the upper non-woven fabric layer and the lower non-woven fabric layer simultaneously.

2. The high permeability 3D facing for disposable absorbent articles of claim 1 wherein: the number of the flow guide pores is the same as that of the thermal joints, and the distance between the flow guide pores and two adjacent thermal joints is equal.

3. The high permeability 3D facing for disposable absorbent articles of claim 2 wherein: the number of the flow guide pores is 6, and 6 flow guide pores are arranged between 6 thermal junction points in a meta-position mode.

4. The high permeability 3D facing for disposable absorbent articles of claim 1 wherein: the heat junction points and the flow guide holes of the adjacent bulges are respectively overlapped.

5. The high permeability 3D facing for disposable absorbent articles of claim 4 wherein: the base material non-woven fabric is divided into a protruding area and a non-protruding area by the protrusions, and the non-protruding area is an area formed by enclosing 4 thermal bonding points and 4 flow guide holes.

6. The high permeability 3D facing for disposable absorbent articles of claim 1 wherein: each row of the bulges are horizontally arranged in the transverse width direction of the 3D surface layer, but each row of the bulges are arranged in an oblique line shape along the longitudinal length direction of the 3D surface layer, and an included angle between a central point connecting line of the horizontally arranged bulges and a central point connecting line of the obliquely arranged bulges is an acute angle of 60-80 degrees.

7. The high permeability 3D facing for disposable absorbent articles of claim 6, wherein: each protrusion and the adjacent protrusions are in tangent relation, a thermal joint or a flow guide pore is arranged at the tangent point, and the non-protrusion area is an area enclosed by 3 thermal joints and 3 flow guide pores.

8. The high permeability 3D facing for disposable absorbent articles of claim 7, wherein: the non-raised area is an area enclosed by 5 thermal joints and 5 flow guide pores.

9. The high permeability 3D facing for disposable absorbent articles of claim 1 wherein: the projections between the front horizontal arrangement and the rear horizontal arrangement are respectively in tangent connection with the projections of the front horizontal arrangement and the rear horizontal arrangement through a tangent point, the tangent point is provided with a heat joint point or a flow guide pore, a non-projection area is formed by enclosing 5 heat joint points and 5 flow guide pores, and the central points of the projections in tangent connection are connected to form a fold line.

10. The high permeability 3D facing for disposable absorbent articles according to any of claims 1-9, wherein: the thermal joint or the flow guiding pore is in a circular dot shape, wherein the diameter of the thermal joint is 0.5-1.0mm, and the diameter of the flow guiding pore is 1.0-1.5 mm.