CN210205110U - High-breathability liquid-impermeable sheet for disposable absorbent article - Google Patents
High-breathability liquid-impermeable sheet for disposable absorbent article Download PDFInfo
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- CN210205110U CN210205110U CN201920258462.1U CN201920258462U CN210205110U CN 210205110 U CN210205110 U CN 210205110U CN 201920258462 U CN201920258462 U CN 201920258462U CN 210205110 U CN210205110 U CN 210205110U
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Abstract
The utility model relates to a high ventilative impervious nature sheet for disposable absorption articles for use, including the ventilative water proof stratum reticulare of superfine fibre of at least one deck be provided with the through-hole that communicates its top layer and bottom on the ventilative water proof stratum reticulare of superfine fibre, the through-hole size is 0.5-10 mu m, and central point on the transverse width on the ventilative water proof stratum reticulare top layer of superfine fibre puts the interval and is provided with along the humidity coating that discolours that the vertical length direction on the ventilative water proof stratum reticulare of superfine fibre extends. The high-permeability liquid-tight sheet is of a two-layer structure or a three-layer structure, the layers are fixedly connected through a binding point, and meanwhile, the air permeability of the high-permeability liquid-tight sheet of the multi-layer structure is improved by arranging the conical air holesSo that the hydrostatic pressure value is 50-1000mmH2O, air permeability of 5500-2·24h。
Description
Technical Field
The utility model relates to a macromolecular material technical field for the health supplies especially relates to a high ventilative liquid-tight nature sheet for disposable absorption articles for use.
Background
Infants and other incontinent individuals often wear disposable absorbent articles such as diapers, sanitary napkins, pull-ups, and the like, for the purpose of storing and isolating the discharged materials from the body, clothing, bedding, and the like of the wearer.
However, the current urine leakage prevention structure of the disposable diaper mainly includes a leakage prevention barrier (the mainstream material is a spunmelt nonwoven fabric) standing on both sides and a breathable PE film under the absorber. The breathable PE film can prevent excrement from seeping out of the bottom layer of the paper diaper, and meanwhile, the surface micropores can penetrate water vapor to achieve a certain breathable effect. However, the breathability of breathable PE films has the following drawbacks: the surface micropores can only penetrate through water vapor in a gasification state, and can still obstruct water mist in a small droplet state; meanwhile, due to the limitation of the production process, the average value of the moisture permeability (water vapor permeability at 40 ℃ and 60% humidity) of the breathable PE film is 3200 g/square meter/24 h, and the upper limit value is 5500 g/square meter/24 h, so that the breathable effect of the breathable PE film in the actual use scene is not obvious. The breathability of absorbent articles is improved, the feeling of stuffiness can be greatly reduced, and the comfort of users is directly improved, so that many companies are dedicated to designing more breathable absorbent articles.
The utility model aims to use the superfine fiber net layer (sheet) with better moisture-proof and air-permeable effects as the main moisture-proof material of the paper diaper, and replace the air-permeable PE film of the current mainstream. This net piece reaches filtration or the liquid filter medium level filter effect, solve the present situation that only gasification water can pierce through the PE membrane at present, make gasification water, the atomizing water, the high-efficient impervious nature bottom that pierces through disposable absorption articles for use of hot-air ability, and the big liquid drop that the concentration is high, liquid can't pierce through the bottom under conventional atmospheric pressure, in the in-service use, can obviously carry out the air exchange through internal environment and outside, the inside steam of disposable absorption articles for use is obviously got rid of, moisture, improve the use experience of disposable absorption articles for use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high ventilative liquid-tight sheet with excellent wet ventilation effect that separates for gasified water, atomized water, hot-air can high-efficient liquid-tight nature bottom that pierces through disposable absorption articles for use, with the not enough technical problem of breathable PE membrane air permeability of solution, for reaching this purpose, the utility model discloses a following technical scheme:
the high-permeability liquid-tight sheet for the disposable absorption article comprises at least one layer of superfine fiber breathable water-proof net layer, each of which is provided with a through hole for communicating the surface layer and the bottom layer of the superfine fiber breathable water-proof net layer, and the size of the through hole is 0.5-10 mu m.
Furthermore, humidity color-changing coatings extending along the longitudinal length direction of the superfine fiber air-permeable and water-proof net layer are arranged at intervals at the center position of the surface layer of the superfine fiber air-permeable and water-proof net layer in the transverse width direction.
Furthermore, the high-permeability and liquid-impermeability sheet has a two-layer structure and is formed by fixedly connecting superfine fiber breathable water-resisting net layers respectively positioned on the upper layer and the lower layer through binding points.
Furthermore, the high-permeability and liquid-impermeability sheet material is of a three-layer structure and is formed by fixedly connecting superfine fiber breathable water-resisting net layers respectively positioned on the upper layer, the middle layer and the lower layer through binding points.
Furthermore, the binding point is one of a heat welding point, an ultrasonic welding point and an infrared welding point, the size of the binding point is 0.05-5mm, and the outline shape of the binding point is circular, star-shaped, heart-shaped, oval, square or rectangular.
Furthermore, a conical air hole penetrating through the surface and the bottom surface of the superfine fiber breathable water-proof net layer positioned on the lower layer can be further arranged on the superfine fiber breathable water-proof net layer positioned on the lower layer, and a conical bottom hole opening of the conical air hole is far away from the superfine fiber breathable water-proof net layer positioned on the upper layer.
Furthermore, conical air holes penetrating through the surface of the superfine fiber breathable water-proof net layer in the middle layer and the bottom surface of the superfine fiber breathable water-proof net layer in the lower layer can be further arranged on the high-breathability liquid-proof sheet material, and conical bottom hole openings of the conical air holes are far away from the superfine fiber breathable water-proof net layer in the upper layer.
Further, the antistatic water pressure value of the highly breathable liquid-impermeable sheet is 50-1000mm water column.
Further, the air permeability of the high air permeability and liquid impermeability sheet material is 5500-2·24h。
Furthermore, the superfine fiber breathable water-resisting net layer is formed by stacking and bonding and reinforcing super-long superfine fibers to form a flaky compact net layer with uniform thickness, and the square gram weight of the flaky compact net layer is 6-18 g.
Further, the fabric further comprises an ultra-soft skin-friendly fiber layer, wherein the square gram weight of the ultra-soft skin-friendly fiber layer is 9-12g, and the ultra-soft skin-friendly fiber layer is selected from spun-bonded non-woven fabric, hot-rolled non-woven fabric, hot-air non-woven fabric, spunlace non-woven fabric or needle-punched non-woven fabric.
The utility model has the advantages that:
firstly, the utility model discloses have prevention of seepage, highly ventilative technological effect, when keeping the high gas permeability of material, have fine isolation, shielding and prevention of seepage performance to liquid, its water pressure resistance reaches 50-1000mmH2The water vapor transmission capacity of O and water vapor reaches 5500-224h, after the urine is wet, the utility model can permanently obstruct the liquid from seeping out, and simultaneously allow the water vapor, the hot air and the water mist with small concentration degree higher than the permeation quantity of the PE breathable film to penetrate, thereby keeping the dryness and permeability.
Secondly, the utility model discloses a set up the toper bleeder vent, can effectively avoid or compensate the problem that air permeability reduces because of high ventilative liquid-tight nature sheet adopts multilayer structure to bring for multilayer structure's high ventilative liquid-tight nature sheet still has excellent air permeability, has improved the intensity of high ventilative liquid-tight nature sheet on the one hand, and on the other hand can effectively prevent the seepage phenomenon of liquid, improves the security of using.
And thirdly, the humidity color-changing coating is arranged on the surface layer (namely the surface layer which is close to the absorption core in use) of the breathable liquid-impermeable sheet, so that the convenience and the comfort of use are further improved, the use condition of the disposable absorption article used by a user can be known clearly from the outside in use, and the discomfort caused by the fact that the disposable absorption article cannot be replaced in time after the disposable absorption article is used by the user is greatly reduced.
Finally, super gentle skin-friendly fibrous layer gives high ventilative impermeable sheet material and has higher feeling, gives higher outward appearance effect, the utility model discloses when being applied to disposable absorbent article's liquid-tight nature bottom and using, solved the not enough of the wet travelling comfort of heat when present disposable absorbent article wore lower, easy weeping, effectively reduced disposable absorbent article's vexed wet sense, improve the travelling comfort of wearing, avoided the infant to wear the red butt phenomenon that disposable absorbent article in-process often appears.
Drawings
FIG. 1 is a schematic representation of the linear pattern of the humidity-shifting coating of example 1.
FIG. 2 is a schematic representation of the striped moisture shifting coating of example 1 distributed in a dashed line.
Fig. 3 is a schematic view of the breathability of a highly breathable liquid impermeable sheet material.
Fig. 4 is a schematic view of the highly breathable, liquid-impermeable sheet material of the two-layer structure of example 2.
Fig. 5 is a schematic representation of the ultra-soft skin-friendly fibrous layer of example 3.
Fig. 6 is a schematic view of the highly breathable, liquid-impermeable sheet material of the two-layer structure of example 4.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the highly breathable and liquid-impermeable sheet material for disposable absorbent articles of this embodiment is a single-layer microfiber breathable and water-proof web layer 1, and through holes (not shown) are formed in the microfiber breathable and water-proof web layer 1 to communicate the surface layer and the bottom layer, and the size of the through holes is 0.5-10 μm.
The superfine fiber breathable water-stop web layer 1 of the embodiment is made of the existing spunbonded nonwoven fabric or spunbonded melt-blown nonwoven fabric, for example, a thin sheet-shaped compact web layer with uniform thickness is formed by stacking the ultra-long superfine fibers and mechanically or wind pressure, and then the superfine fiber breathable water-stop web layer 1 with the square gram weight of 6-18g is formed by thermal bonding or self bonding and reinforcement.
As shown in figure 3, the high-permeability and high-permeability liquid-impermeable sheet material 100 formed by the single-layer superfine fiber breathable water-proof net layer 1 has the technical effects of seepage prevention and high permeability, water vapor 102 permeates through the through holes of the high-permeability and high-permeability liquid-impermeable sheet material 100 to be emitted into the external environment 104, the exchange of internal and external gases is realized, the problem of damp stuffiness is solved, and liquid or excrement is isolated and shielded on the using inner side surface 103 of the high-permeability and high-liquid-impermeable sheet material 100, so that the high permeability of the material is maintained, the high-permeability, good isolation, shielding and seepage prevention performances are realized on the liquid, and the antistatic pressure value reaches 560mmH2The steam penetration of O and water reaches 7980g/cm224h, it can be seen that the highly breathable and liquid-impermeable sheet material adopting the single-layer structure has higher breathability.
As an improved technical solution, in this example, on the basis of the above embodiment, a humidity color-changing coating is disposed at the longitudinal center of the surface layer of the ultrafine fiber air-permeable and water-proof net layer, and the humidity color-changing coating of this example adopts the prior art, such as the humidity color-changing indication described in the prior art with publication number CN 101797198B. As shown in fig. 1, in this embodiment, the humidity color-changing coating 2 is disposed at the center position in the transverse width direction of the surface layer, and extends to both ends in a linear manner along the longitudinal length direction of the ultrafine fiber air-permeable and water-proof mesh layer, and the humidity color-changing coating 2 is formed by a plurality of strip-shaped humidity color-changing coatings distributed at intervals at the center position in the transverse width direction of the surface layer. As shown in fig. 2, the humidity-changing coating 2 may also extend in the form of a dotted line to both ends. In addition, the surface layer of the superfine fiber breathable water-proof net layer can be coated in a regular pattern, net or strip shape.
In order to further improve the convenience and the comfort of use, the surface layer (namely the surface layer which is close to the absorption core in use) of the high-permeability liquid-tight sheet is provided with the humidity color-changing coating, so that the use condition of the disposable absorption article used by a user can be known clearly from the outside in use, and the discomfort caused by the fact that the disposable absorption article cannot be replaced in time after the use of the user is greatly reduced.
Example 2
As shown in fig. 4, in addition to embodiment 1, the highly air-permeable and liquid-impermeable sheet of this embodiment has a two-layer structure, and is formed by fixedly connecting the ultrafine fiber air-permeable and water-impermeable mesh layer 1 on the upper layer and the ultrafine fiber air-permeable and water-impermeable mesh layer 2 on the lower layer through the binding points 6, the binding points 6 are preferably ultrasonic welding points, or may be one of heat welding points or infrared welding points, and have a size of 0.05-5mm, and the contour shape of the binding points 6 is preferably circular, or may be star-shaped, heart-shaped, oval, square, or rectangular.
In order to further improve the air permeability of the high air permeability and liquid impermeability sheet material with a two-layer structure, as shown in fig. 4, in this embodiment, a tapered air vent 10 penetrating through the surface and the bottom of the ultrafine fiber air permeable and water impermeable web layer 2 is provided on the ultrafine fiber air permeable and water impermeable web layer 2 located at the lower layer, and a tapered bottom orifice 11 of the tapered air vent 10 is far away from the ultrafine fiber air permeable and water impermeable web layer 1 at the upper layer. In a preferred embodiment, the size of the opening of the conical top of the conical ventilation hole 10 is 0.1mm-0.5mm, preferably 0.1mm or 0.2 mm.
The beneficial technical effects of this embodiment are that the antistatic water pressure value of the highly air-permeable and liquid-impermeable sheet is 712 mm water column, and the air permeability is 7650g/cm224h, the conical air holes can effectively avoid or make up the problem of reduced air permeability caused by the double-layer structure adopted by the high-air-permeability liquid-impermeable sheet, so that the high-air-permeability liquid-impermeable sheet with the double-layer structure still has excellent air permeability, the strength of the high-air-permeability liquid-impermeable sheet is improved, the liquid leakage phenomenon can be effectively prevented, and the use safety is improved.
Example 3
As shown in fig. 5, on the basis of embodiment 1, the highly air-permeable and liquid-impermeable sheet of this embodiment has a three-layer structure, and is formed by fixedly connecting an ultrafine fiber air-permeable and water-impermeable net 1 located at the upper layer, an ultrafine fiber air-permeable and water-impermeable net 3 located at the middle layer, and an ultrafine fiber air-permeable and water-impermeable net layer 2 located at the lower layer through binding points 7. The prick point 7 is preferably an ultrasonic welding point, or can adopt one of a heat welding point or an infrared welding point, and has the size of 0.05-5mm, and in addition, the outline shape of the prick point 7 is preferably a circle, and can also be selected from a star shape, a heart shape, an oval shape, a square shape or a rectangle shape.
In order to further improve the air permeability of the three-layer structure high air permeability liquid-impermeable sheet, as shown in fig. 5, in this embodiment, a tapered air vent 20 is provided on the high air permeability liquid-impermeable sheet, and penetrates downward from the surface of the ultrafine fiber air permeable water-impermeable web layer 3 in the middle layer to the bottom surface of the ultrafine fiber air permeable water-impermeable web layer 2 in the lower layer, a tapered bottom orifice 21 of the tapered air vent 20 is far away from the ultrafine fiber air permeable water-impermeable web layer 1 in the upper layer, and the size of a tapered top opening of the tapered air vent 20 is 0.1mm to 0.5mm, preferably 0.1mm or 0.2 mm.
The beneficial technical effects of this embodiment lie in that the antistatic water pressure value of adopting three-layer structure's high ventilative liquid-tight sheet is 783 millimeters water column, and ventilative volume 7024g/cm224h, similar to example 2, the air permeability of the high air permeability and liquid impermeability sheet adopting the three-layer structure is also reduced, but the range is not large, so that the conical air holes can effectively avoid or make up the problem of reduction of the air permeability caused by the three-layer structure of the high air permeability and liquid impermeability sheet, and the air permeability and the safety use performance of the high air permeability and liquid impermeability sheet are both considered, so that the high air permeability and liquid impermeability sheet adopting the three-layer structure still has excellent air permeability, the strength of the high air permeability and liquid impermeability sheet is improved, the liquid leakage phenomenon can be effectively prevented, and the use safety is improved.
Example 4
As shown in fig. 6, in order to further improve the touch feeling and wearing comfort of the highly air-permeable and liquid-impermeable sheet material, in this embodiment, on the basis of embodiment 1, embodiment 2 or embodiment 3, an ultra-soft skin-friendly fiber layer 4 is disposed on the outer side of the highly air-permeable and liquid-impermeable sheet material, and is integrally connected with the highly air-permeable and liquid-impermeable sheet material through a hot melt adhesive layer, wherein the square gram weight of the ultra-soft skin-friendly fiber layer 4 is 9-12g, and is selected from a spunbond nonwoven fabric, a hot-rolled nonwoven fabric, a hot-air nonwoven fabric, a spunlace nonwoven fabric or a needle-punched nonwoven fabric.
The ultra-soft skin-friendly fiber layer endows the high-permeability liquid-impermeable sheet material with higher hand feeling and higher appearance effect, solves the defects of lower heat-humidity comfort and easy liquid leakage of the existing disposable absorption article when the disposable absorption article is worn, and effectively avoids the red butt phenomenon frequently occurring in the process of wearing the disposable absorption article by infants.
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 (10)
1. A highly breathable, liquid-impermeable sheet material for use in disposable absorbent articles, characterized by: the high-permeability liquid-impermeable sheet comprises at least one superfine fiber gas-permeable water-proof net layer, wherein each superfine fiber gas-permeable water-proof net layer is provided with a through hole for communicating the surface layer with the bottom layer, and the size of each through hole is 0.5-10 mu m.
2. The highly breathable, liquid-impermeable sheet material for disposable absorbent articles according to claim 1, characterized in that: and humidity color-changing coatings extending along the longitudinal length direction of the superfine fiber breathable water-proof net layer are arranged at the center of the surface layer of the superfine fiber breathable water-proof net layer in the transverse width at intervals.
3. The highly breathable, liquid-impermeable sheet material for disposable absorbent articles according to claim 1, characterized in that: the high-permeability liquid-impermeable sheet is of a two-layer structure and is formed by fixedly connecting superfine fiber permeable water-proof net layers respectively positioned on an upper layer and a lower layer through binding points.
4. The highly breathable, liquid-impermeable sheet material for disposable absorbent articles according to claim 1, characterized in that: the high-permeability liquid-impermeable sheet is of a three-layer structure and is formed by fixedly connecting superfine fiber permeable water-proof net layers respectively positioned on an upper layer, a middle layer and a lower layer through binding points.
5. The highly breathable liquid-impermeable sheet material for disposable absorbent articles according to claim 3 or 4, characterized in that: the binding points are one of heat welding points, ultrasonic welding points and infrared welding points, the size is 0.05-5mm, and the outline shape of the binding points is circular, star-shaped, heart-shaped, oval, square or rectangular.
6. The highly breathable, liquid-impermeable sheet material for disposable absorbent articles according to claim 3, characterized in that: the superfine fiber breathable water-proof net layer positioned on the lower layer is provided with conical air holes penetrating through the surface and the bottom surface of the superfine fiber breathable water-proof net layer, and conical bottom orifices of the conical air holes are far away from the superfine fiber breathable water-proof net layer on the upper layer.
7. The highly breathable, liquid-impermeable sheet material for disposable absorbent articles according to claim 4, characterized in that: the conical air holes penetrate through the surface of the superfine fiber breathable water-proof net layer in the middle layer and the bottom surface of the superfine fiber breathable water-proof net layer in the lower layer, and conical bottom holes of the conical air holes are far away from the superfine fiber breathable water-proof net layer in the upper layer.
8. The highly breathable liquid-impermeable sheet material for disposable absorbent articles according to any one of claims 1 to 4 and 6 to 7, characterized in that: the antistatic water pressure value of the high-permeability liquid-impermeable sheet is 50-1000mm water column.
9. The highly breathable liquid-impermeable sheet material for disposable absorbent articles according to any one of claims 1 to 4 and 6 to 7, characterized in that: the air permeability of the high air permeability liquid-tight sheet is 5500-8000g/cm2·24h。
10. The highly breathable liquid-impermeable sheet material for disposable absorbent articles according to any one of claims 1 to 4 and 6 to 7, characterized in that: the superfine fiber breathable water-resisting net layer is formed by stacking and bonding and reinforcing super-long superfine fibers to form a flaky compact net layer with uniform thickness, and the square gram weight of the flaky compact net layer is 6-18 g.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920258462.1U CN210205110U (en) | 2019-03-01 | 2019-03-01 | High-breathability liquid-impermeable sheet for disposable absorbent article |
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| CN201920258462.1U CN210205110U (en) | 2019-03-01 | 2019-03-01 | High-breathability liquid-impermeable sheet for disposable absorbent article |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109938926A (en) * | 2019-03-01 | 2019-06-28 | 百润(中国)有限公司 | A kind of high gas-permeable, liquid-impermeable sheet material for disposable absorbent article |
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2019
- 2019-03-01 CN CN201920258462.1U patent/CN210205110U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109938926A (en) * | 2019-03-01 | 2019-06-28 | 百润(中国)有限公司 | A kind of high gas-permeable, liquid-impermeable sheet material for disposable absorbent article |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: The utility model relates to a high air permeability and liquid tight sheet used for disposable absorption articles Effective date of registration: 20201217 Granted publication date: 20200331 Pledgee: Industrial Bank Limited by Share Ltd. Huian branch Pledgor: BARON (CHINA) Co.,Ltd. Registration number: Y2020350000142 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |