CN204698829U - Absorbent article - Google Patents

Abstract

An absorbent article comprises a bottom layer, an absorbent unit, and a covering unit. The bottom layer is made of liquid-impermeable material. The absorbent unit is arranged on one surface of the bottom layer for absorbing liquid, and the absorbent unit has an absorbent body and a plurality of open pores distributed between the absorbent bodies, and the absorbent body is composed of hydrophilic polyolefin fibers. The covering unit is made of liquid-permeable material, covers the absorbent unit and is connected to the bottom layer. By adding the hydrophilic polyolefin fibers to the absorbent unit, an absorbent article with long-lasting water absorption is provided.

Description

Absorbent

technical field

The utility model relates to an absorbent article, in particular to an absorbent article with hydrophilic polyolefin fibers.

Background technique

Existing absorbent articles such as diapers or feminine hygiene products etc. are mainly made of polyethylene (polyethylene, PE), polypropylene (polypropylene, PP), or polyethylene terephthalate (polyethylene terephthalate, PET) etc. Molecules are made into non-woven fabrics and applied to the surface layer or absorbent layer of the absorbent article. Generally speaking, non-woven fabrics made of the above-mentioned polymers have hydrophobic properties. Therefore, in order to increase the overall water absorption of the absorbent article, a hydrophilic agent is usually added to the non-woven fabrics to produce a hydrophilic effect. However, the method of processing the surface of the non-woven fabric with a hydrophilic agent can only make the non-woven fabric have a short-term hydrophilic effect, but cannot have long-term water absorption characteristics.

Contents of the invention

The purpose of the utility model is to provide an absorbent article with long-term water absorption.

The absorbent product of the utility model comprises a bottom layer, an absorption unit and a covering unit.

The bottom layer is made of a liquid-impermeable material. The absorption unit is arranged on one of the surfaces of the bottom layer for absorbing liquid. The absorption unit has an absorber and a plurality of open pores distributed among the absorbers, and the composition of the absorber includes hydrophilic polyolefin fibers. The covering unit is made of liquid-permeable material, covers the absorbing unit and is connected with the bottom layer.

In the absorbent product described in the utility model, the absorber is obtained by melt-blowing the hydrophilic polyolefin fiber.

In the absorbent article described in the present invention, the absorbent body is obtained by using the hydrophilic polyolefin fiber in a spun-bonded manner.

In the absorbent article described in the utility model, the absorption unit includes a covering layer covering the absorber.

According to the absorbent article of the present invention, the covering unit includes a surface layer and a subsurface layer between the surface layer and the absorption unit.

In the absorbent article described in the utility model, the surface layer is a non-woven fabric containing hydrophilic polyolefin fibers, and has a plurality of pores that can be used for diversion.

In the absorbent article described in the utility model, the subsurface layer is a non-woven fabric containing hydrophilic polyolefin fibers, and has a plurality of pores that can be used for flow diversion.

According to the absorbent article of the present invention, the sub-surface layer has a flow-guiding surface close to the surface layer, and either the surface of the surface layer or the flow-guiding surface has flow-guiding lines.

In the absorbent article described in the utility model, the bottom layer is a plastic film.

The beneficial effect of the utility model is that: the composition of the absorption unit includes hydrophilic polyolefin fibers so as to have a multi-porous structure, thereby providing absorbent articles with long-lasting water absorption.

Description of drawings

Fig. 1 is a side sectional view illustrating a first embodiment of an absorbent article of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Referring to FIG. 1 , the first embodiment of the absorbent article of the present invention comprises a layer of bottom layer 21 , a layer of absorbent unit 22 , and a layer of covering unit 23 .

The bottom layer 21 is made of liquid-impermeable material, and the absorption unit 22 is disposed on one surface of the bottom layer 21 for absorbing liquid.

Specifically, the bottom layer 21 is made of a liquid-impermeable plastic film for retaining the absorbed liquid and preventing the liquid from leaking out.

The absorbent unit 22 includes an absorbent body 221 , a plurality of open pores (not shown) distributed between the absorbent body 221 , and a coating layer 222 covering the absorbent body 221 . The composition of the absorber 221 includes pulverized pulp in a mixed state, super absorbent polymer powder (Super absorbent polymer, SAP), and hydrophilic polyolefin fiber. The comminuted pulp helps to absorb liquid flow and binds superabsorbent polymer powder (SAP) and hydrophilic polyolefin fibers. The superabsorbent polymer powder (SAP) is uniformly dispersed in the pulverized pulp. It is a polymer material such as acrylic acid, acrylamide or polyvinyl alcohol, which can absorb and retain liquids much larger than its own mass. Has an excellent ability to absorb liquids. The absorbent body 221 composed of the hydrophilic polyolefin fiber, the pulverized pulp and the superabsorbent polymer powder (SAP) has a porous structure and can effectively absorb water.

In detail, the production of the hydrophilic polyolefin fiber in this example is to first slice the polyolefin made of polymer materials, and then mix it with a polymer-type hydrophilic modifier to obtain a hydrophilic polyolefin fiber. After the hydrophilic polyolefin masterbatch is obtained, the fiber web formed by the hydrophilic polyolefin fibers is obtained by a melt-blown or spun-bonded process. Next, the hydrophilic polyolefin fiber web obtained by melt-blowing or spun-bonding, pulverized pulp and superabsorbent polymer powder (SAP) are combined to form the absorber 221 with a porous structure. Preferably, the polymer material of the first embodiment can be selected from synthetic polymer materials such as polypropylene (PP), polyethylene (PE), or polyvinyl chloride (PVC); The long-acting hydrophilic modifier Ingassurf HL560 is selected as the agent; and the hydrophilic polyolefin fiber is formed by melt blowing.

It is worth mentioning that in the first embodiment of the utility model, the long-acting hydrophilic modifier is first blended with polyolefin to prepare a mixed masterbatch, which can make the absorbent article of the utility model have a long-lasting effect. Hydrophilic effect; then the fiber web made of hydrophilic polyolefin fibers formed by melt-blowing or spun-bonding the prepared mixed masterbatch has a porous structure due to the relationship of the manufacturing process, so that the absorption of the utility model Sexual products not only have hydrophilicity, but also can further guide moisture into the pores, thereby effectively absorbing moisture. It can be seen that the absorbent article of the present invention adopts the above-mentioned hydrophilic polyolefin fiber not only for hydrophilic effect, but also for long-term water absorption.

The coating layer 222 is used to cover the absorbent body 221 as a buffer between the absorbent body 221 and the bottom layer 21, so as to prevent the superabsorbent polymer powder (SAP) from piercing the bottom layer 21 after absorbing water and swelling. And cause the problem that the liquid that absorbs leaks outside. Preferably, the covering layer 222 is fiber paper, and the fiber paper is selected from polypropylene/polyethylene, and polyethylene terephthalate/polyethylene copolymers.

The covering unit 23 is made of liquid-permeable material, covers the absorbing unit 22 and connects with the bottom layer 21 , and is used for directly contacting the liquid to be absorbed, and leading the liquid into the absorbing unit 22 .

Specifically, the covering unit 23 includes a subsurface layer 231 located on the covering layer 222 , and a surface layer 232 covering the subsurface layer 231 and the absorbing unit 22 and connected to the bottom layer 21 . The subsurface layer 231 is made of a liquid-permeable non-woven fabric, and is mainly formed in the area of the covering layer 222 that mainly absorbs liquid. The surface layer 232 is also made of a liquid-permeable non-woven fabric. The bottom layer 21 is connected so that the subsurface layer 231 and the absorption unit 22 can be firmly wrapped between the surface layer 232 and the bottom layer 21 .

In detail, in the first embodiment, the above-mentioned hydrophilic mixed masterbatch is put into a melt-blown non-woven fabric manufacturing machine, and a hydrophilic polyolefin melt-blown non-woven fabric is directly formed by a melt-blown process to form the surface layer 232.

It should be noted that the surface layer 232 made of hydrophilic polyolefin melt-blown non-woven fabric has a plurality of pores that can be used to guide liquid. Preferably, in order to further enhance the conductivity of the covering unit 23 to the liquid, the sub-surface layer 231 may also have a flow-guiding pattern (not shown) on the surface close to the surface layer 232 for strengthening the surface of the sub-surface layer 231 The diversion function, and when a large amount of liquid is in contact with it in an instant, it can be quickly diverted to the lower covering layer 222 and the absorbent body 221 through the diversion lines on the sub-surface layer 231, so as to avoid a large amount of liquid due to being unable to immediately Introduced into this absorber 221 to absorb and cause leakage.

In addition, it is worth noting that since the surface layer 232 is in direct contact with the human body, other skin-healthy additives such as aloe vera and vitamin E can be added to moisturize the skin and prevent allergies.

Referring to Fig. 1 cooperatively, the structure of the second embodiment of the absorbent article of the present invention is roughly the same as that of the first embodiment, the difference is that the subsurface layer 231 of the second embodiment is also made of hydrophilic polyolefin Made of meltblown nonwoven fabric. In addition, it should be noted that, in the above-mentioned first embodiment and the second embodiment, the porous non-woven fabric made of hydrophilic polyolefin fibers can be applied to the absorption unit 22 depending on the situation or other implementation modes. Or the cover unit 23.

To sum up, the absorbent article of the present utility model mainly forms a non-woven fabric with pores by melt-blowing or viscose-spinning the hydrophilic polyolefin, and applies it to the absorbing unit 22 and the covering unit 23, And can be made into absorbent article with long-term water absorption, so can really reach the purpose of this utility model.

Claims (9)

1. an absorbent article, comprise: one deck bottom, one deck absorptive unit, and one deck capping unit, it is characterized in that: this bottom is made up of liquid-tight material, this absorptive unit is arranged at a wherein surface of this bottom, for absorbing fluid, this absorptive unit has an absorber and multiple open space be distributed between this absorber, and the composition of this absorber comprises hydrophilic polyolefin fiber, this capping unit is made up of liquid permeable material, covers this absorptive unit and is connected with this bottom.

2. absorbent article according to claim 1, is characterized in that: this absorber utilizes this hydrophilic polyolefin fiber to obtain in melt-blown mode.

3. absorbent article according to claim 1, is characterized in that: this absorber utilizes this hydrophilic polyolefin fiber to obtain to spin glutinous mode.

4. absorbent article according to claim 1, is characterized in that: this absorptive unit comprises the clad of this absorber coated.

5. the absorbent article according to claim arbitrary in Claims 1-4, is characterized in that: this capping unit comprises a top layer, and one is positioned at secondary top layer between this top layer and this absorptive unit.

6. absorbent article according to claim 5, is characterized in that: this top layer is the adhesive-bonded fabric containing hydrophilic polyolefin fiber, and has multiple hole that can be used for water conservancy diversion.

7. absorbent article according to claim 5, is characterized in that: this top layer is the adhesive-bonded fabric containing hydrophilic polyolefin fiber, and has multiple hole that can be used for water conservancy diversion.

8. absorbent article according to claim 5, is characterized in that: this top layer has a flow-guiding surface near this top layer, and the surface on this top layer and the wherein arbitrary of this flow-guiding surface have water conservancy diversion lines.

9. absorbent article according to claim 1, is characterized in that: this bottom is plastic foil.