CN216496076U

CN216496076U - Quick absorption type breathable sanitary towel composite core

Info

Publication number: CN216496076U
Application number: CN202120403276.XU
Authority: CN
Inventors: 张迎雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2022-05-13
Anticipated expiration: 2031-02-23

Abstract

The utility model discloses a quick absorption type breathable sanitary towel composite core body, which comprises: ventilative sponge layer, wet strength hot melt adhesive layer and the wood pulp polymer composite bed that from top to bottom sets gradually, sets up hydrophilic non-woven fabrics above the ventilative sponge layer, bonds through wet strength hot melt adhesive layer between hydrophilic non-woven fabrics and the ventilative sponge layer, and the ventilative sponge layer and the wood pulp polymer composite bed bond as an organic wholely through middle wet strength hot melt adhesive layer. Inside add the fluff pulp of wood pulp polymer composite bed, the fluff pulp is used for strengthening the conductivity, and wood pulp polymer composite bed below sets up the ventilated membrane, and the ventilated membrane passes through wet strength hot melt adhesive bonding as an organic whole with wood pulp polymer composite bed. Adopt the gluing of sponge and wood pulp polymer composite layer, make the two as inseparable an organic whole, in the use, the sponge is moist and warp more easily also more next to the shin, effectively prevents the edge leakage. Because the sponge has certain elasticity, the close fitting effect is better than that of the conventional sanitary towel in the using process.

Description

Quick absorption type breathable sanitary towel composite core

Technical Field

The utility model relates to the field of disposable sanitary products, in particular to a quick-absorption type breathable sanitary towel composite core body.

Background

The sanitary towel is a disposable sanitary product used for a long time in the menstrual period of a woman, the sanitary towel is in direct contact with the skin of the woman, the using effect of the sanitary towel directly influences the physiological sanitation of the woman, and meanwhile, the sanitary towel is used as a long-time using article, needs to have good air permeability, conforms to the physiological curve of the woman and reduces side leakage as much as possible. The problem of side leakage and fault and play to stick together is solved, mainly depends on the design of sanitary towel structure. Therefore, the structural design of the sanitary napkin is directly related to the use effect.

Generally, in order to increase the diffusion rate of liquid in disposable sanitary products, a flow guide layer nonwoven fabric is provided as a part of a composite core after the liquid penetrates through a liquid permeable top sheet. The main liquid absorption parts of the composite core body are roughly divided into the following parts: the composite core body is made of fluff pulp, wet strength paper, and dust-free paper; there are also so-called half-cores which are compounded with fluff pulp plus wet-strength paper, or fluff pulp plus dust-free paper. However, these sanitary napkins are not good in use effect, have problems of slow absorption rate, breakage and lumping in use, easily give uncomfortable feeling to consumers, and are not good in use experience.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides a quick absorption type breathable sanitary towel composite core.

In order to achieve the purpose, the utility model adopts the technical scheme that: a rapid-absorption breathable sanitary napkin composite core comprising: ventilative sponge layer, wet strength hot melt adhesive layer and the wood pulp polymer composite bed that from top to bottom sets gradually, wet strength hot melt adhesive layer includes: the first wet strength hot melt adhesive, the second wet strength hot melt adhesive and the third wet strength hot melt adhesive which are sprayed at different positions are separated; the breathable sponge layer is characterized in that a hydrophilic non-woven fabric is arranged above the breathable sponge layer, the hydrophilic non-woven fabric is bonded with the breathable sponge layer through a first wet strength hot melt adhesive, and the breathable sponge layer and the wood pulp polymer composite layer are bonded into a whole through a middle second wet strength hot melt adhesive.

The inside fluff pulp that adds of wood pulp polymer composite bed, the fluff pulp is used for strengthening the conductivity, wood pulp polymer composite bed below sets up the ventilated membrane, the ventilated membrane with wood pulp polymer composite bed bonds as an organic wholely through third wet-strength hot melt adhesive.

In a preferred embodiment of the present invention, the wood pulp polymer composite layer is a composite of wood pulp and polymer.

In a preferred embodiment of the utility model, the wet strength hot melt adhesive is uniformly sprayed by a spray gun in a spiral spraying manner.

In a preferred embodiment of the utility model, the wet strength hot melt adhesive is applied in an amount of 0.5 to 5 g/m.

In a preferred embodiment of the present invention, the sanitary napkin has an overall shape of one of an oval shape and a crescent shape.

In a preferred embodiment of the utility model, the breathable sponge layer is arranged in a flat and stiff manner, and can deform in the width and width directions after absorbing water.

In a preferred embodiment of the utility model, the breathable sponge layer body is provided with a plurality of pores, and the pores are uniformly distributed and have consistent sizes.

In a preferred embodiment of the present invention, the gas permeable membrane is made of a high molecular material such as polyethylene.

The utility model solves the defects in the background technology, and has the following beneficial effects:

(1) the sponge and the wood pulp polymer composite layer are glued together to form an inseparable whole, and the sponge is wet and easy to deform and fit to the skin after absorbing liquid in the using process, so that side leakage is effectively prevented. Because the sponge has certain elasticity, the close fitting effect of the sponge is better than that of the conventional sanitary towel during the female activity in the using process.

(2) The wood pulp polymer composite layer is tightly bonded with the sponge through the wet strength hot melt adhesive, and the wood pulp polymer composite layer has no strength after imbibing liquid, but the sponge still has good strength, so the wood pulp polymer composite layer is not easy to break and lump. And the sponge has larger ventilation gaps, and the upper part, the lower part and the two sides of the sponge can be well ventilated, so that the sanitary towel has better ventilation effect.

(3) According to the utility model, the wet strength hot melt adhesive is used for bonding the structural materials of all layers together, so that the delamination phenomenon of the product after imbibing is effectively reduced, the problems of lumping, fault, leakage and the like of the product are avoided, the integrity and integrity of the paper sanitary towel are improved, and the paper sanitary towel is more comfortable and drier for women to wear. On the other hand, add the fluff pulp in the inside wood pulp polymer composite bed, can effectively strengthen its conductivity, promote the absorption rate of wood pulp polymer composite bed to liquid simultaneously.

Drawings

The utility model is further explained below with reference to the figures and examples;

FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention;

fig. 2 is a schematic partial cross-sectional view of a preferred embodiment of the utility model.

Specifically, the breathable fabric comprises, by weight, 1-a breathable sponge layer, 2-a wet strength hot melt adhesive layer, 21-a first wet strength hot melt adhesive, 22-a second wet strength hot melt adhesive, 23-a third wet strength hot melt adhesive, 3-a wood pulp polymer composite layer, 4-a hydrophilic non-woven fabric and 5-a breathable film.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the utility model in a schematic manner, and thus show only the constituents relevant to the utility model.

As shown in fig. 1 and 2, a composite core for a rapid-absorption breathable sanitary napkin comprises: ventilative sponge layer 1, wet strength hot melt adhesive layer 2 and wood pulp polymer composite bed 5 that set gradually from top to bottom, wet strength hot melt adhesive layer 2 includes: separate first wet strength hot melt adhesive 21, second wet strength hot melt adhesive 22 and the third wet strength hot melt adhesive 23 that sets up, ventilative sponge layer 1 top sets up hydrophilic non-woven fabrics 4, hydrophilic non-woven fabrics 4 with bond through first wet strength hot melt adhesive 21 between ventilative sponge layer 1, just wood pulp polymer composite layer 5 with bond as an organic wholely through middle second wet strength hot melt adhesive 22.

3 inside fluff pulps of wood pulp polymer composite layer, the fluff pulp is used for strengthening the conductivity, 3 below in wood pulp polymer composite layer set up ventilated membrane 5, ventilated membrane 5 with wood pulp polymer composite layer 3 bonds as an organic wholely through third wet strength hot melt adhesive 23. The breathable film 5 is made of a high polymer material of polyethylene, and can ensure good air permeability and safety.

In a preferred embodiment of the utility model, the sponge and the wood pulp polymer composite layer 5 are glued together to form an inseparable whole, so that the sponge is wet and easy to deform and more close to the skin after absorbing liquid in the using process, and the side leakage can be effectively prevented. The ventilative sponge layer 1 sets up with flat straight mode simultaneously, and the sponge has certain elasticity, can produce deformation in width length and width direction after ventilative sponge layer 1 absorbs water, and the sponge effect next to the shin is better than conventional sanitary towel in the use.

In a preferred embodiment of the present invention, the wood pulp polymer composite layer 5 is tightly bonded to the sponge by a wet strength hot melt adhesive, and since the wood pulp polymer composite layer 5 has no strength after absorbing liquid, but the sponge still has good strength, the wood pulp polymer composite layer 5 is not easy to break and lump. The sponge has larger air-permeable gaps, the pores are uniformly distributed and have consistent sizes, and the upper part, the lower part and the two sides of the sponge can be well ventilated, so that the sanitary towel has better ventilation effect.

In a preferred embodiment of the utility model, the structural materials of all layers are bonded together through the wet strength hot melt adhesive, the delamination phenomenon of the product after imbibing is effectively reduced by utilizing the wet strength hot melt adhesive, the problems of lumping, fault, leakage and the like of the product are avoided, the integrity and integrality of the paper sanitary towel are improved, and the female wears more comfortably and more dry. The whole appearance of sanitary towel is one of ellipse and crescent, just the whole appearance of sanitary towel accords with women's physiological curve, comfort level when further improving the user and dressing. On the other hand, add the fluff pulp in wood pulp polymer composite bed 3 is inside, can effectively strengthen its conductivity, promote the absorption speed of wood pulp polymer composite bed 3 to liquid simultaneously.

In a preferred embodiment of the present invention, the wood pulp polymer composite layer 3 is a composite of wood pulp and polymer, and the ratio of the wood pulp to the polymer is adjusted according to the amount of liquid absorbed by the wood pulp polymer composite layer 3, so as to effectively increase the liquid absorption amount. On the other hand, the wet strength hot melt adhesive is uniformly sprayed in a spiral spraying mode through a spray gun, the usage amount of the wet strength hot melt adhesive during spraying is 0.5-5 g/square meter, preferably 1.0 g/square meter, the air permeability of the composite core body can be ensured, and the bonding firmness of the composite core body is ensured.

Example 1

As shown in figure 1, the breathable sanitary towel core structure capable of being absorbed quickly has the upper layer which is a breathable sponge layer 1, the middle layer which is provided with a first wet strength hot melt adhesive layer 2 and the lower layer which is a wood pulp polymer composite layer 3. In the specific implementation process, as shown in fig. 2, the first wet strength hot melt adhesive 21 and the hydrophilic non-woven fabric 4 are bonded above the breathable sponge layer 1, the second wet strength hot melt adhesive 22 and the wood pulp polymer composite layer 3 are bonded below the breathable sponge layer 1, and the third wet strength hot melt adhesive 23 and the breathable film 5 are bonded below the lower wood pulp polymer composite layer 3. Regard as a testable independent sanitary towel with the structure of figure 2, carry out the performance contrast with certain brand sponge sample of market purchase, the market on the ventilative core of sponge of purchase different with this utility model structure, its ventilative sponge layer and wood pulp polymer composite bed formula structure as an organic whole. The comparative properties were as follows:

Figure 657681DEST_PATH_GDA0003537536320000061

through the performance contrast above, this utility model structure's core infiltration time and diffusion length obviously are superior to the sponge core of other structures in market, have better result of use. Meanwhile, the sanitary towel with the core structure is more close to the skin when in use, and side leakage is prevented. Because the sponge has certain elasticity, the close fitting effect of the sponge is better than that of the conventional sanitary towel during the female activity in the using process. Because the wood pulp polymer composite layer is closely bonded with the sponge through the wet strength hot melt adhesive, the wood pulp polymer composite layer has no strength after imbibing, but the sponge still has good strength, so the wood pulp polymer composite layer can not be broken and lumpy. Certain brand sponge core in market has the integral type structure, and lower floor's entity structure air permeability is obviously not as than this utility model structure's core sanitary towel behind the imbibition.

While the preferred embodiments of the present invention have been described, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A rapid-absorption breathable sanitary napkin composite core comprising: a breathable sponge layer, a wet strength hot melt adhesive layer and a wood pulp polymer composite layer which are arranged from top to bottom in sequence,

the wet strength hot melt adhesive layer comprises: the first wet strength hot melt adhesive, the second wet strength hot melt adhesive and the third wet strength hot melt adhesive which are sprayed at different positions are separated;

a hydrophilic non-woven fabric is arranged above the breathable sponge layer, the hydrophilic non-woven fabric is bonded with the breathable sponge layer through a first wet strength hot melt adhesive, and the breathable sponge layer and the wood pulp polymer composite layer are bonded into a whole through a second wet strength hot melt adhesive in the middle;

2. The composite core of a quick absorption breathable sanitary napkin according to claim 1, wherein: the wet strength hot melt adhesive is uniformly sprayed by a spray gun in a spiral spraying manner.

3. The composite core of a quick absorption breathable sanitary napkin according to claim 1, wherein: the usage amount of the wet strength hot melt adhesive is 0.5-5 g/square meter when the wet strength hot melt adhesive is sprayed.

4. The composite core of a quick absorption breathable sanitary napkin according to claim 1, wherein: the overall shape of the sanitary towel made of the composite core body is one of an oval shape and a crescent shape.

5. The composite core of claim 1, wherein the composite core is formed by: the breathable sponge layer is arranged in a flat and straight mode, and can deform in the width direction and the width direction after absorbing water.

6. The composite core of a quick absorption breathable sanitary napkin according to claim 1, wherein: the breathable sponge layer body is provided with a plurality of pores, and the pores are uniformly distributed and consistent in size.

7. The composite core of a quick absorption breathable sanitary napkin according to claim 1, wherein: the breathable film is made of polyethylene high polymer materials.