CN210096102U - Composite core material with high water-absorbent resin in velocity difference gradient layered distribution and absorption article thereof - Google Patents
Composite core material with high water-absorbent resin in velocity difference gradient layered distribution and absorption article thereof Download PDFInfo
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- CN210096102U CN210096102U CN201920339088.8U CN201920339088U CN210096102U CN 210096102 U CN210096102 U CN 210096102U CN 201920339088 U CN201920339088 U CN 201920339088U CN 210096102 U CN210096102 U CN 210096102U
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Abstract
The utility model discloses a super absorbent resin is composite core material and absorption articles for use that velocity difference gradient stratiform distributes. The composite core material with the super absorbent resin in the velocity difference gradient layered distribution is a multilayer structure composite material and comprises a first covering layer, a first super absorbent resin layer, a second super absorbent resin layer, a high fluffy non-woven fabric layer, a third super absorbent resin layer, a fourth super absorbent resin layer and a second covering layer, wherein the first super absorbent resin layer has the slowest absorption speed, and the second super absorbent resin layer and the third super absorbent resin layer have gradually enhanced absorption speeds and are in the velocity difference gradient layered distribution. The utility model discloses a different velocity gradient super absorbent resin's stratiform distributes, makes the urine can be directional conduction to bottom super absorbent resin layer rapidly after being absorbed by first overburden, consequently can promote bottom super absorbent resin's utilization ratio by a wide margin, and composite core material is soft comfortable, be difficult for playing the disconnected cotton that sticks together.
Description
Technical Field
The utility model belongs to the technical field of disposable absorption articles for use. More particularly, it relates to a composite core material with high water-absorbing resin in the form of speed difference gradient layer distribution and its absorption article.
Background
Disposable absorbent articles, also known as absorbent disposable products, are mainly feminine hygiene products, baby diapers, adult incontinence products, panty diapers, pull-ups and the like. Billions of people in China determine the huge demand of the market of disposable absorbent articles, and particularly, the disposable absorbent articles play more and more important roles in meeting the increasing physical life of people, especially the physiological health requirements, along with the rapid development of market economy and the continuous improvement of the physical living standard of people. In recent years, with the improvement of living standard, the demand of people on paper diapers, sanitary napkins and adult diapers is remarkably increased, and the personalized high-grade novel disposable absorption article has huge market prospect and consumption potential.
The traditional first generation absorption core is an absorption core structure which is formed by uniformly mixing fluff pulp and super absorbent resin and then coating the fluff pulp and the super absorbent resin into a whole by spraying glue on a coating material. The absorbent core has the advantages that the super absorbent resin is uniformly distributed in the fluff pulp fibers, and the wrapping layers are only formed by spraying glue on the upper layer and the lower layer, so that the free space for the super absorbent resin to expand is large, the utilization rate of the super absorbent resin in the absorbent core is high, and the water absorption capacity of the super absorbent resin is high. But simultaneously in order to reduce the cotton breaking problem that sticks together of traditional structure absorption core, generally set up hot light pressure or hot net and press the compaction, make the compliance of traditional absorption core material reduce.
The second generation absorption core comprises a first covering layer, a hot melt adhesive layer, a first high water absorption resin layer, a high fluffy non-woven fabric layer, a second high water absorption resin layer, a hot melt adhesive layer and a second covering layer, wherein the first covering layer and the second covering layer are usually dry dust-free paper or hot air non-woven fabric. The absorbent core material with the structure can improve the problem of lump and broken cotton after the super absorbent resin absorbs urine by fixing the super absorbent resin in the high-fluffy non-woven fabric layer or between the high-fluffy non-woven fabric layer and the covering layer, but the first and second super absorbent resin layers of the existing composite core material are generally the super absorbent resins with the same absorption speed, so that the problems of low utilization rate of the super absorbent resin at the bottom layer, insufficient dryness at the surface layer and slow absorption speed exist.
Based on the above problems, there is a need to provide a soft and comfortable composite core material with high air permeability, dryness, high utilization rate of super absorbent resin and fast absorption speed, which can instantly absorb a large amount of liquid, reduce the side leakage and leakage, ensure the dryness of the absorbent article, and avoid the red rash or allergy of the contacted skin.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome above-mentioned prior art's defect and not enough, provide a soft comfortable, ventilative dry and comfortable, high absorbent resin high-usage, the fast super absorbent resin of absorption rate is the composite core material of speed difference gradient lamellar distribution, improve the comfort level.
The utility model also aims to provide an absorbing article containing the composite core material which is distributed in a speed difference gradient layer shape and contains the super absorbent resin.
The utility model discloses above-mentioned purpose is realized through following technical scheme:
a composite core material with super absorbent resin in a speed difference gradient layered distribution is a multi-layer structure composite material and comprises a first covering layer, a first super absorbent resin layer, a second super absorbent resin layer, a high-bulkiness non-woven fabric layer, a third super absorbent resin layer, a fourth super absorbent resin layer and a second covering layer, wherein the first super absorbent resin layer has the slowest absorption speed, and the second super absorbent resin layer and the third super absorbent resin layer have gradually enhanced absorption speeds and are in a speed difference gradient layered distribution.
The utility model discloses it sticks together disconnected cotton to absorb the core easily for the first generation, the second generation absorbs core material bottom superabsorbent resin utilization ratio low, the top layer is dry and comfortable inadequately, the problem that the absorption rate is slow, it is soft comfortable to provide, ventilative dry and comfortable, superabsorbent resin high-usage, the fast superabsorbent resin of absorption rate is the composite core material of speed difference gradient lamellar distribution, lamellar distribution through different speed gradient superabsorbent resin, make the urine can be directional conduction to bottom superabsorbent resin layer rapidly after being absorbed by first overburden, consequently, bottom superabsorbent resin's utilization ratio can be promoted by a wide margin, and show the absorption rate and the many times imbibition effect that have promoted composite core, the disconnected cotton problem that sticks together has been reduced simultaneously.
Further, in the preferred embodiment of the present invention, the absorption speed is sequentially: the first super absorbent resin layer is more than the second super absorbent resin layer and more than the third super absorbent resin layer and less than or equal to the fourth super absorbent resin layer.
Further, in a preferred embodiment of the present invention, a fifth super absorbent resin layer, a sixth super absorbent resin layer and a third cover layer are further disposed outside the second cover layer; the absorption speed of the fifth high water absorption resin layer and the sixth high water absorption resin layer is faster than that of the fourth high water absorption resin layer, and the fifth high water absorption resin layer and the sixth high water absorption resin layer are arranged between the second covering layer and the third covering layer.
Further, in the preferred embodiment of the present invention, the absorption speed is sequentially: the fourth super absorbent resin layer is less than the fifth super absorbent resin layer and is less than or equal to the sixth super absorbent resin layer.
Further, as a further preferable mode, the fifth super absorbent resin layer and the sixth super absorbent resin layer are super absorbent resins having the same absorption rate.
Further, in the preferred embodiment of the present invention, the attaching manner between the materials of each layer is one or more of a hot-pressing groove, a hot-pressing point, and a hot-melt pressure-sensitive adhesive.
The hot-melt pressure-sensitive adhesive is composed of polymers such as SBS/SIS and the like, tackifying resins such as rosin resin/petroleum resin and the like, softeners such as naphthenic oil and the like, antioxidants and the like.
Further, in a preferred embodiment of the present invention, the square gram weight of each layer of super absorbent resin can be broadcast in equal amount, that is, the square gram weight of each layer of super absorbent resin is the same; or broadcast sowing in unequal amount, namely the square gram weight of each layer of the super absorbent resin is different; the super absorbent resin can also be broadcast partially in equal amount and broadcast partially in unequal amount, namely, the square gram weights of the super absorbent resins in partial layers are the same, and the partial layers are different.
Further, in a preferred embodiment of the present invention, the content of the super absorbent resin disposed on the high-loft nonwoven fabric layer is not less than 20% and not more than 80%.
Further, in a preferred embodiment of the present invention, the content of the super absorbent resin embedded in the high-loft nonwoven fabric layer is not less than 20% and not more than 80%.
Furthermore, in a preferred embodiment of the present invention, the content of the super absorbent resin disposed on the high-loft nonwoven fabric layer is 60% to 70%, and the content of the super absorbent resin embedded in the high-loft nonwoven fabric layer is 30% to 40%; or the content of the super absorbent resin arranged on the high-fluffy non-woven fabric layer is 30-40%, and the content of the super absorbent resin embedded in the high-fluffy non-woven fabric layer is 60-70%.
Further, in a preferred embodiment of the present invention, the content of the super absorbent resin disposed under the high-loft nonwoven fabric layer is not less than 20% and not more than 80%.
Furthermore, in a preferred embodiment of the present invention, the content of the super absorbent resin embedded in the high-bulk nonwoven fabric layer is 30% to 40%, and the content of the super absorbent resin disposed under the high-bulk nonwoven fabric layer is 60% to 70%.
Further, in the preferred embodiment of the present invention, the high-loft nonwoven fabric layer is made of fibers having a fiber denier of 3.0 to 10.0D, a fiber length of 25 to 100mm, and 1 to 10 crimps. The high-fluffiness non-woven fabric layer is a hot air non-woven fabric formed by opening, cotton mixing, card clothing carding and hot oven setting of hot melt fibers such as ES fibers, PP fibers, PET fibers or PE/PET fibers.
Further, in a preferred embodiment of the present invention, the first cover layer and the second cover layer are air-formed dust-free paper made of wood pulp and superfine hot-melt staple fibers, or are hot air, hot-rolled nonwoven fabric, hydrophilic spun-bonded nonwoven fabric or toilet paper made of hydrophilic staple fibers through carding into a web and heat setting.
The super absorbent resin is a high molecular weight polymer obtained by acrylic acid polymerization, has high water retention capacity and balanced absorption capacity under high load, and can repeatedly release and absorb water, and the absorbed water cannot be extruded by a simple physical method.
Based on the composite core material that the super absorbent polymer is velocity difference gradient lamellar distribution, the utility model also provides an absorption articles for use that include that the super absorbent polymer is the composite core material that velocity difference gradient lamellar distribution. Such as diapers, nappies, pull-up pants, sanitary napkins and the like.
Compared with the prior art, the utility model has the following outstanding advantage:
the utility model adopts the super absorbent resin layers with different absorption speeds, and each super absorbent resin layer is in the layered distribution of speed difference gradient from top to bottom, and through the layered distribution of the super absorbent resin with different speed gradient, urine can be quickly and directionally conducted to the bottom super absorbent resin layer after being absorbed by the first covering layer, so that the utilization rate of the bottom super absorbent resin can be greatly improved, the directional controllability of liquid absorption is realized, the liquid absorption amount is very large, the moisture sense is very small when the product skin is contacted, the surface is dry and comfortable without soaking the skin, and only a small volume is occupied after liquid absorption; the composite core body material is soft and comfortable, and is not easy to lump and break cotton.
Drawings
Fig. 1 is a schematic structural diagram of a composite core material according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of the composite core material of embodiment 2 of the present invention.
Wherein 1 is a first cover layer, 2 is a first super absorbent resin layer, 3 is a second super absorbent resin layer, 4 is a high bulky nonwoven fabric layer, 5 is a third super absorbent resin layer, 6 is a fourth super absorbent resin layer, 7 is a second cover layer, 8 is a fifth super absorbent resin layer, 9 is a sixth super absorbent resin layer, and 10 is a third cover layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be further described in detail and fully with reference to the following specific embodiments, and it should be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1 composite core Material with superabsorbent resin in a velocity Difference gradient layered distribution
As shown in fig. 1, a composite core material with a super absorbent resin distributed in a speed difference gradient layer shape is a multi-layer structure composite material, and comprises a first covering layer 1, a first super absorbent resin layer 2, a second super absorbent resin layer 3, a high-bulkiness non-woven fabric layer 4, a third super absorbent resin layer 5, a fourth super absorbent resin layer 6 and a second covering layer 7 from top to bottom in sequence, wherein the materials of the layers are bonded with each other through hot melt pressure sensitive adhesive, hot pressing grooves or hot pressing points; each super absorbent resin layer has different absorption rate, and its absorption rate from top to bottom crescent, and is the stratiform distribution of speed difference gradient, and the speed of absorption rate is in proper order promptly: the first super absorbent resin layer 2 is more than the second super absorbent resin layer 3 is more than the third super absorbent resin layer 5 is less than or equal to the fourth super absorbent resin layer 6.
The super absorbent resin is a high molecular weight polymer obtained by acrylic acid polymerization, has high water retention capacity, has a balance of absorption capacity under high load, can not extrude absorbed water by a simple physical method, and can repeatedly release and absorb water.
Wherein the first super absorbent resin layer 2 has the slowest absorption rate, the super absorbent resin content on the high-bulk nonwoven fabric layer 4 is 60% to 70%, and the super absorbent resin content embedded in the high-bulk nonwoven fabric layer 4 is 30% to 40%.
The second super absorbent resin layer 3 has a higher absorption rate than the first super absorbent resin layer 2, and has a super absorbent resin content of 30 to 40% in the high bulky nonwoven fabric layer 4 and a super absorbent resin content of 60 to 70% in the high bulky nonwoven fabric layer 4.
The third super absorbent resin layer 5 has a higher absorption rate than the second super absorbent resin layer 3, and has a super absorbent resin content of 30 to 40% embedded in the high bulky nonwoven fabric layer 4 and a super absorbent resin content of not higher than 60 to 70% provided under the high bulky nonwoven fabric layer 4.
The fourth super absorbent resin layer 6 has a higher absorption rate than the third super absorbent resin layer 5, and has a super absorbent resin content of 60 to 70% in the high bulky nonwoven fabric layer 4 and a super absorbent resin content of 30 to 40% in the high bulky nonwoven fabric layer 4.
The first cover layer 1 and the second cover layer 7 are air-flow formed dust-free paper consisting of wood pulp and superfine hot-melt short fibers, or hot air, hot-rolled non-woven fabric, hydrophilic spun-bonded non-woven fabric or toilet paper formed by carding hydrophilic short fibers into a net and performing heat setting.
The high-fluffiness non-woven fabric layer 4 is a hot air non-woven fabric which is formed by opening, cotton mixing, card clothing carding and hot oven setting of hot melt fibers such as ES fibers, PP fibers, PET fibers or PE/PET fibers with the fiber denier of 3.0-10.0D, the fiber length of 25-100 mm and the crimping degree of 1-10.
The hot-melt pressure-sensitive adhesive is composed of polymers such as SBS/SIS and the like, tackifying resins such as rosin resin/petroleum resin and the like, softeners such as naphthenic oil and the like, antioxidants and the like.
In the utility model, the square gram weight of each layer of super absorbent resin can be broadcast in equal amount, that is, the square gram weight of each layer of super absorbent resin is the same; or broadcast sowing in unequal amount, namely the square gram weight of each layer of the super absorbent resin is different; the super absorbent resin can also be broadcast partially in equal amount and broadcast partially in unequal amount, namely, the square gram weights of the super absorbent resins in partial layers are the same, and the partial layers are different.
The utility model adopts the super absorbent resin layers with different absorption speeds, and each super absorbent resin layer is in the layered distribution of speed difference gradient from top to bottom, and through the layered distribution of the super absorbent resin with different speed gradient, urine can be quickly and directionally conducted to the bottom super absorbent resin layer after being absorbed by the first covering layer, so that the utilization rate of the bottom super absorbent resin can be greatly improved, the directional controllability of liquid absorption is realized, the liquid absorption amount is very large, the moisture sense is very small when the product skin is contacted, the surface is dry and comfortable without soaking the skin, and only a small volume is occupied after liquid absorption; the composite core body material is soft and comfortable, and is not easy to lump and break cotton.
Example 2 composite core Material of superabsorbent Polymer in gradient velocity Difference layered distribution
As shown in fig. 2, in order to further improve the rapid infiltration effect, in this embodiment, in addition to the composite core material in which the super absorbent polymer in example 1 is distributed in a layer shape with a gradient of velocity difference, a fifth super absorbent polymer layer 8, a sixth super absorbent polymer layer 9 and a third cover layer 10 are further disposed on the second cover layer 7 of the composite core material, so as to further improve the utilization rate of the super absorbent polymer in the bottom layer, accelerate drainage and improve the product utilization rate.
EXAMPLE 3 an absorbent article
The embodiment of the utility model provides an absorption articles for use is still provided, and it includes that the super absorbent polymer of above-mentioned embodiment 1 or embodiment 2 is the composite core material of velocity difference gradient lamellar distribution. The absorbent article has good permeation and absorption effects, and is soft and comfortable.
The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, etc. made within the protection scope of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A composite core material with high water absorption resin in a speed difference gradient layered distribution is a multi-layer structure composite material and comprises a first covering layer (1), a first high water absorption resin layer (2), a second high water absorption resin layer (3), a high-fluffy non-woven fabric layer (4), a third high water absorption resin layer (5), a fourth high water absorption resin layer (6) and a second covering layer (7), and is characterized in that the absorption speed of the first high water absorption resin layer (2) is slowest, and the absorption speeds of the second high water absorption resin layer (3) and the third high water absorption resin layer (5) are gradually increased to be in a speed difference gradient layered distribution.
2. A composite core material according to claim 1 wherein the absorption rate is in the order: the first super absorbent resin layer (2) < the second super absorbent resin layer (3) < the third super absorbent resin layer (5) ≦ fourth super absorbent resin layer (6).
3. A composite core material as claimed in claim 1, wherein the second cover layer (7) is provided with a fifth superabsorbent resin layer (8), a sixth superabsorbent resin layer (9) and a third cover layer (10) in addition; the fifth super absorbent resin layer (8) and the sixth super absorbent resin layer (9) have absorption speeds higher than those of the fourth super absorbent resin layer (6), and are disposed between the second cover layer (7) and the third cover layer (10).
4. A composite core material according to claim 3 wherein the absorption rate is in the order: the fourth super absorbent resin layer (6) < the fifth super absorbent resin layer (8) is not more than the sixth super absorbent resin layer (9).
5. The composite core material of claim 1, wherein the bonding mode between each layer of material is one or more of a hot-pressing groove, a hot-pressing point and hot-melt pressure-sensitive adhesive bonding.
6. A composite core material according to claim 1, wherein the content of the super absorbent resin provided on the high-loft nonwoven fabric layer (4) is not less than 20% and not more than 80%.
7. A composite core material according to claim 1, wherein the content of the super absorbent resin embedded in the high loft nonwoven fabric layer (4) is not less than 20% and not more than 80%.
8. A composite core material according to claim 1, wherein the content of the super absorbent resin disposed under the high loft nonwoven fabric layer (4) is not less than 20% and not more than 80%.
9. The composite core material according to claim 1, wherein the high loft nonwoven fabric layer (4) is composed of fibers having a fiber denier of 3.0 to 10.0D, a fiber length of 25 to 100mm, and 1 to 10 crimps.
10. An absorbent article comprising the composite core material in which the superabsorbent polymer of any of claims 1 to 9 is layered with a gradient of velocity difference.
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| CN201920339088.8U CN210096102U (en) | 2019-03-15 | 2019-03-15 | Composite core material with high water-absorbent resin in velocity difference gradient layered distribution and absorption article thereof |
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| CN201920339088.8U CN210096102U (en) | 2019-03-15 | 2019-03-15 | Composite core material with high water-absorbent resin in velocity difference gradient layered distribution and absorption article thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111568645A (en) * | 2020-04-13 | 2020-08-25 | 东华大学 | Super absorbent fiber multi-layer gradient structure absorption core layer |
| CN112891068A (en) * | 2021-01-20 | 2021-06-04 | 杭州豪悦护理用品股份有限公司 | Integrally-formed composite core and preparation method thereof |
| CN112914835A (en) * | 2021-01-20 | 2021-06-08 | 杭州豪悦护理用品股份有限公司 | Novel composite core and preparation method thereof |
-
2019
- 2019-03-15 CN CN201920339088.8U patent/CN210096102U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111568645A (en) * | 2020-04-13 | 2020-08-25 | 东华大学 | Super absorbent fiber multi-layer gradient structure absorption core layer |
| CN111568645B (en) * | 2020-04-13 | 2022-03-15 | 东华大学 | Super absorbent fiber multi-layer gradient structure absorption core layer |
| CN112891068A (en) * | 2021-01-20 | 2021-06-04 | 杭州豪悦护理用品股份有限公司 | Integrally-formed composite core and preparation method thereof |
| CN112914835A (en) * | 2021-01-20 | 2021-06-08 | 杭州豪悦护理用品股份有限公司 | Novel composite core and preparation method thereof |
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