CN109938924B - Quick diversion absorption and anti-rewet disposable absorbent product - Google Patents

Abstract

The invention relates to a disposable absorbent product capable of rapidly guiding, absorbing and resisting rewet, which comprises a liquid-permeable top layer, a liquid-impermeable side-leakage-preventing layer, a liquid-impermeable bottom layer and an absorbent core arranged between the liquid-permeable top layer and the liquid-impermeable bottom layer, wherein the absorbent core is formed by connecting a high-hydroscopicity resin layer, a fluffy cotton layer and a high-hydroscopicity resin layer respectively from top to bottom, a fluff pulp layer with the thickness of 0.2-5mm is arranged on the absorbent core, and the absorbent core are connected into a whole through a spiral hot melt adhesive layer; the fluffy cotton layer is a wavy fluffy cotton layer. The disposable absorbent product has the advantages of quick absorption, temporary liquid storage and quick infiltration, can effectively avoid the phenomena of urine leakage and red buttocks of the conventional disposable absorbent product, also avoid the infiltration returning amount of the disposable absorbent product in the use process, improve the dryness and improve the use experience of the disposable absorbent product.

Description

Quick diversion absorption and anti-rewet disposable absorbent product

Technical Field

The invention relates to the technical field of disposable sanitary products, in particular to a disposable absorbent product with rapid diversion absorption and anti-rewet.

Background

Infants and other individuals who cannot take care of their lives often need to wear disposable absorbent articles such as diapers, panty liners, sanitary napkins, pull-ups and the like in order to store and isolate the excretions from the body, clothing, bedding and the like of the wearer, while the absorbent medium of the disposable absorbent article is an absorbent core, which is conventionally formed by blending fluff pulp fibers with superabsorbent resin particles. However, since the conventional absorbent core has the advantage of rapid absorption, there is also a serious problem of liquid rewet, and thus, it is gradually replaced by a composite absorbent core having excellent rewet performance.

At present, the composite absorption core is a main core material in the market of Chinese paper diapers, almost replaces the traditional wood pulp core, is resistant to falling, does not break, does not stick together, is extremely ultrathin and is popular with Chinese consumers. Most of the current composite absorbent cores are of a 5-layer structure: the upper covering layer, the lower covering layer and the middle fluffy cotton are arranged, wherein the two sides of the fluffy cotton are clamped with polymer water absorbing particles, the main body of the polymer material is distributed between fluffy cotton fiber webs, and the outermost layer is generally provided with a non-woven fabric layer for edge covering. Each paper diaper manufacturer optimizes the composite absorption core, mainly comprises the steps of distributing upper and lower layers for replacing high polymer materials, slotting, replacing upper and lower cover layer materials, and finely adjusting the third dimension of fluffy cotton and the size of gaps. On the other hand, in foreign markets such as Europe and America and Japanese and Korean, the traditional absorption core is still a main stream core due to the advantages of softness, rapid liquid storage, low urine leakage risk and the like.

As described above, the composite absorbent core has a problem of high urine leakage rate, although it has excellent rewet performance. The reason for this is the lack of a medium-fluff pulp fiber in the composite absorbent core that serves the function of absorption and temporary storage.

Based on the reasons, the invention combines the advantages of the composite absorbent core and the traditional fluff pulp core, and provides a disposable absorbent product with rapid diversion absorption and anti-rewet.

Disclosure of Invention

The invention provides a disposable absorbent product with rapid diversion absorption and anti-rewet, which aims at the technical problem of high urine leakage rate of the existing disposable absorbent product due to the use of an ultrathin absorbent core. To achieve the purpose, the invention adopts the following technical scheme:

The invention relates to a disposable absorbent product capable of rapidly guiding, absorbing and resisting rewet, which comprises a liquid-permeable top layer, a liquid-impermeable side-leakage-preventing layer, a liquid-impermeable bottom layer and an absorbent core arranged between the liquid-permeable top layer and the liquid-impermeable bottom layer, wherein the absorbent core is formed by connecting a high-hydroscopicity resin layer, a fluffy cotton layer and a high-hydroscopicity resin layer respectively from top to bottom, a fluff pulp layer with the thickness of 0.2-5mm is arranged on the absorbent core, and the absorbent core are connected into a whole through a spiral hot melt adhesive layer; the fluffy cotton layer is a wavy fluffy cotton layer.

Preferably, the superabsorbent resin is also incorporated between fluff pulp fibers in the fluff pulp layer.

Preferably, diamond-shaped embossments are arranged on one side or two sides of the fluff pulp layer, and the thickness of the diamond-shaped embossments is 0.5-1.5mm.

Preferably, the composite absorbent core is formed by overlapping and connecting the fluff pulp layer and the absorbent core from top to bottom in a spiral hot melt adhesive layer.

Preferably, the coating layer circumferentially coats the composite absorbent core formed by stacking the fluff pulp layer, the absorbent core, the fluff pulp layer and the absorbent core from top to bottom.

Preferably, a conical through hole penetrating through the surface layer and the bottom layer of the coating layer is arranged on the coating layer, and a conical bottom opening of the conical through hole is far away from the fluff pulp layer; a hydrophobic coating is arranged on the inner side surface of the coating layer, which is close to the fluff pulp layer.

Preferably, the hydrophobic coating is arranged in a matrix between every four adjacent conical through holes, extends in a strip shape along the longitudinal direction of the coating layer, and circumferentially surrounds the cone top openings of the conical through holes.

Preferably, the aperture of the cone top opening is 0.5-5mm.

Preferably, the spiral hot melt adhesive layer is composed of a plurality of spiral hot melt adhesive strips, and an unapplied area with the interval width of 3-100mm is arranged between every two adjacent spiral hot melt adhesive strips.

The beneficial effects of the invention are as follows: firstly, the fluff pulp layer has the functions of quick absorption and temporary liquid storage, and quick infiltration, and can effectively avoid the phenomena of urine leakage and red buttocks of the existing disposable absorbent product. And secondly, the conical through holes arranged on the wrapping layer further improve the speed of liquid penetrating into the fluff pulp layer, and the liquid is absorbed and temporarily stored by the fluff pulp layer in time, so that the rewet amount of the disposable absorbent product in the use process is avoided, the dryness is improved, and the use experience of the disposable absorbent product is improved.

Drawings

FIG. 1 is a schematic structural view of a rapid fluid-absorbent and rewet resistant disposable absorbent article.

Fig. 2 is a schematic view of the structure of fig. 1 taken along A-A.

Fig. 3 is a schematic structural view of a composite absorbent core for rapid acquisition by diversion.

Fig. 4 is a schematic view of a spiral hot melt adhesive layer.

Fig. 5 is a schematic structural view of another composite absorbent core for rapid acquisition by diversion.

Fig. 6 is a schematic view of the structure of the tapered through holes of the cladding layer and the hydrophobic coating.

Fig. 7 is a schematic view of a hydrophobic coating.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and 2, the disposable absorbent article of the present embodiment, which is highly breathable, includes a liquid-permeable top sheet 106, a liquid-impermeable side-leakage-preventing layer 103, a liquid-impermeable bottom sheet 101, and an absorbent core 102 disposed between the liquid-permeable top sheet and the liquid-impermeable bottom sheet. The absorbent core 102 is formed by connecting a super absorbent resin layer 4, a fluffy cotton layer 5 and a super absorbent resin layer 4 from top to bottom.

As shown in fig. 2, 3 and 4, the disposable absorbent article with high air permeability and bottom leakage prevention of the present embodiment is characterized in that: firstly, a fluff pulp layer 104 with the thickness of 0.2-5mm is arranged on the absorption core 102 and is connected with the absorption core 102 into a whole through a spiral hot melt adhesive layer 105; secondly, the fluffy cotton layer 5 is a wavy fluffy cotton layer.

As another specific embodiment, the present example may also incorporate a superabsorbent resin between fluff pulp fibers within fluff pulp layer 104.

The fluff pulp layer of the embodiment has the advantages of quick absorption, temporary liquid storage and quick infiltration, and can effectively avoid the phenomena of urine leakage and red buttocks of the conventional disposable absorbent product in the use process.

Example 2

To overcome the problem of loose fibers within the existing fluff pulp layer, the present embodiment selects fluff pulp fibers in the existing material that can undergo super-compressed so that the fluff pulp layer has a strength of longitudinal draft and an adhesive strength with the cover or absorbent core. By providing embossing on one or both sides of the fluff pulp layer, the embossing shape may be diamond-shaped embossing, or heart-shaped embossing, or star-shaped embossing, such that the fluff pulp layer has a thickness of 0.5-1.5mm.

As shown in fig. 3, the present embodiment removes the upper cover layer or/and the lower cover layer which are often provided in the conventional composite absorbent core, replaces the upper cover layer or/and the lower cover layer with the ultra-thin fluff pulp layer 104, and circumferentially wraps the fluff pulp layer 104, the absorbent core 102 with the wrapping layer 2 such as a hot air nonwoven fabric, a hot rolled nonwoven fabric, a spun-bonded nonwoven fabric or a toilet paper to prevent the fluff pulp layer from being dispersed.

Example 3

This example further improves the composite absorbent core in a chassis-resistant, highly breathable disposable absorbent article based on example 1 or example 2. As shown in fig. 5, the composite absorbent core of this embodiment is composed of two fluff pulp layers and two absorbent cores, wherein the fluff pulp layers are disposed on the absorbent cores, and the structure is as follows: the fluff pulp layer 104, the absorption core layer 102, the fluff pulp layer 104 and the absorption core layer 102 are connected into a whole through a spiral hot melt adhesive layer after being overlapped from top to bottom, and are formed by adopting the circumferential cladding of the wrapping layer 2.

In this embodiment, the wavy fluffy cotton layer 5 is used as a skeleton structure of the absorbent core. In the specific embodiment, as shown in fig. 5, each absorbent core 102 is formed by connecting a superabsorbent resin 4, a wavy fluffy cotton layer 5, and a superabsorbent resin layer 4.

Example 4

Because the hot melt adhesive used in the field of disposable absorbent products is hydrophobic, the structure of the hot melt adhesive layer is further improved in order to reduce the influence of the hot melt adhesive layer on the penetration and diffusion of liquid. As shown in FIG. 4, the spiral hot-melt adhesive layer 105 of this embodiment is composed of a plurality of spiral hot-melt adhesive strips, for example, a spiral hot-melt adhesive strip A, a spiral hot-melt adhesive strip B and a spiral hot-melt adhesive strip C, and an un-glued area with a spacing width of 3-100mm is arranged between every two adjacent spiral hot-melt adhesive strips, and the spacing width is preferably 20, 50 or 80mm.

Example 5

In order to further improve the rapid permeability and absorption performance of the composite absorbent core, as shown in fig. 6, in this embodiment, on the basis of embodiment 1, embodiment 2 or embodiment 3, a conical through hole 8 penetrating through the surface layer and the bottom layer of the coating layer is provided on the coating layer 2, where the conical bottom opening 81 of the conical through hole 8 is far away from the fluff pulp layer 104, and the conical top opening 82 is close to the fluff pulp layer 104.

In a specific embodiment, the conical through holes 8 are arranged in a matrix, and the aperture of the conical top opening 82 is 0.5-5mm, such as 2mm, 3mm, 4mm or 5mm.

In order to suppress the influence of the tapered through hole 8 on the rewet performance of the liquid, as shown in fig. 6 and 7, the present embodiment further provides a hydrophobic coating 6, wherein the hydrophobic coating 6 extends in a strip shape along the longitudinal direction of the coating layer 2, and circumferentially surrounds the cone top opening 82 of the tapered through hole 8, such that the cone top opening 82 communicates with the pores 7 on the hydrophobic coating 6. Wherein, the hydrophobic coating 6 adopts the finishing agent of the fluorine-containing water-repellent and oil-repellent composition as the prior material, such as the fluorine-containing water-repellent and oil-repellent finishing agent disclosed in the prior art with the publication number of CN 105476754A.

Although the present invention has been described in terms of specific embodiments, the scope of the invention is not limited to the specific embodiments described above, but is capable of numerous modifications, variations and substitutions without departing from the spirit of the invention.

Claims (4)

1. The utility model provides a quick water conservancy diversion is absorbed and disposable absorbent article of anti infiltration that returns, includes liquid-permeable top layer, liquid-tight side leakage prevention layer, liquid-tight bottom, coating to and set up the absorbent core between liquid-permeable top layer and liquid-tight bottom, the absorbent core is formed by high water absorbent resin layer, fluffy cotton layer, high water absorbent resin layer connection respectively from top to bottom, its characterized in that: a fluff pulp layer with the thickness of 0.2-5mm is arranged on the absorption core and is connected with the absorption core into a whole through a spiral hot melt adhesive layer; the fluffy cotton layer is a wavy fluffy cotton layer;

The coating layer circumferentially coats the composite absorption core formed by overlapping and connecting the fluff pulp layer and the absorption core from top to bottom and is formed by connecting a spiral hot melt adhesive layer; the coating layer is provided with a conical through hole penetrating through the surface layer and the bottom layer of the coating layer, and a conical bottom opening of the conical through hole is far away from the fluff pulp layer; a hydrophobic coating is arranged on the inner side surface, close to the fluff pulp layer, of the coating layer; every four adjacent conical through holes are arranged in a matrix, the hydrophobic coating extends in a strip shape along the longitudinal direction of the coating layer, and the hydrophobic coating circumferentially surrounds the conical top openings of the conical through holes;

the spiral hot melt adhesive layer consists of a plurality of spiral hot melt adhesive strips, and an un-glued area with the interval width of 3-100mm is arranged between every two adjacent spiral hot melt adhesive strips;

Diamond-shaped embossments with the thickness of 0.5-1.5mm are arranged on one side or two sides of the fluff pulp layer.

2. The rapid diversion absorbent and rewet resistant disposable absorbent article of claim 1 wherein: a superabsorbent resin is also incorporated between the fluff pulp fibers in the fluff pulp layer.

3. The rapid diversion absorbent and rewet resistant disposable absorbent article of claim 1 wherein: the coating layer circumferentially coats the composite absorbent core which is formed by overlapping and connecting the fluff pulp layer, the absorbent core, the fluff pulp layer and the absorbent core from top to bottom.

4. The rapid diversion absorbent and rewet resistant disposable absorbent article of claim 1 wherein: the aperture of the cone top opening is 0.5-5mm.