CN112545762B - Hydrophilic non-woven fabric for sanitary products and preparation method and application thereof - Google Patents
Hydrophilic non-woven fabric for sanitary products and preparation method and application thereof Download PDFInfo
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- CN112545762B CN112545762B CN202011395132.0A CN202011395132A CN112545762B CN 112545762 B CN112545762 B CN 112545762B CN 202011395132 A CN202011395132 A CN 202011395132A CN 112545762 B CN112545762 B CN 112545762B
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 153
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000004049 embossing Methods 0.000 claims abstract description 32
- 210000002700 urine Anatomy 0.000 claims abstract description 19
- 230000002175 menstrual effect Effects 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 13
- 238000013329 compounding Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 206010021639 Incontinence Diseases 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 26
- 238000013461 design Methods 0.000 abstract description 13
- 210000001217 buttock Anatomy 0.000 abstract description 6
- 239000002344 surface layer Substances 0.000 abstract description 5
- 206010012735 Diarrhoea Diseases 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 37
- 230000000052 comparative effect Effects 0.000 description 27
- 239000000047 product Substances 0.000 description 18
- 230000008595 infiltration Effects 0.000 description 13
- 238000001764 infiltration Methods 0.000 description 13
- 230000002265 prevention Effects 0.000 description 9
- 230000035515 penetration Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010998 test method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
- A61F2013/15463—Absorbency
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
- A61F2013/15487—Capillary properties, e.g. wicking
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
- A61F2013/15544—Permeability
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
- A61F2013/15934—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven
- A61F2013/15991—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven in making composite multi-layered product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The invention discloses a hydrophilic non-woven fabric for sanitary products and a preparation method thereof, wherein the middle area of the non-woven fabric is provided with a central suction and permeation area, the upper side and the lower side of the central suction and permeation area are respectively provided with a transverse drain-proof area, and the left side and the right side of the central suction and permeation area are respectively provided with a longitudinal drain-proof area; the central suction and permeation area is provided with a concave point structure and funnel-shaped micropores; a first bulge structure is arranged on the transverse drain-preventing region; and a second bulge structure is arranged on the longitudinal drain-preventing region. The invention divides the non-woven fabric body into 3 areas, and the central suction and permeation area adopts concave point embossing and perforation design, so that urine/loose stool can be quickly permeated downwards to reduce slip leakage, the contact area between the skin of babies and a wet surface layer can be reduced, and long-acting dryness of buttocks is ensured. In addition, the transverse anti-drain region and the longitudinal anti-drain region adopt a convex vertical grain structure, so that the liquid slipping resistance can be effectively increased, and the slipping risk is reduced. The invention also applies the hydrophilic non-woven fabric for the sanitary products to disposable sanitary products, including paper diapers, pull-up pants, sanitary napkins, menstrual pants and the like.
Description
Technical Field
The invention relates to the technical field of disposable sanitary products, in particular to a hydrophilic non-woven fabric for a sanitary product, and a preparation method and application thereof.
Background
It is counted that the market size of the baby diaper in 2019 reaches 499.0 hundred million yuan, the market permeability is increased from 63.9% in 2018 to 72.2%, and the diaper has become a necessary product for infant care. With the increase of the popularity of paper diapers, various problems are gradually revealed in the actual use process. Various problems increase the uncomfortable feeling of infants and cause great trouble to parents. Of these, the "red buttocks" and "leakage" are most typical. Therefore, there is an urgent need to develop a product capable of reducing the "red buttocks" and "leakage of urine".
Disclosure of Invention
In order to overcome the defects in the prior art, one of the purposes of the invention is to provide a hydrophilic non-woven fabric for sanitary products, which comprises a suction and permeation area and a leakage-proof area, so that on one hand, urine and loose feces can quickly permeate downwards and do not slip and permeate, and on the other hand, the contact area between the skin of a baby and a wet surface layer can be reduced, and the risk of red buttocks is reduced; on the other hand, the leakage-proof area can increase the urine sliding and seepage resistance and effectively reduce the sliding and seepage.
The second purpose of the invention is to provide a preparation method of the hydrophilic non-woven fabric for the sanitary articles, which has simple and convenient flow and is suitable for industrial production.
A third object of the present invention is to apply the hydrophilic nonwoven to sanitary products.
One of the purposes of the invention is realized by adopting the following technical scheme:
the hydrophilic non-woven fabric for the sanitary articles comprises a non-woven fabric body, wherein a central suction and permeation area is arranged in the middle of the non-woven fabric body, transverse drain-preventing areas are arranged on the upper side and the lower side of the central suction and permeation area, and longitudinal drain-preventing areas are arranged on the left side and the right side of the central suction and permeation area; the central suction and permeation area is provided with concave point structures which are arranged in an array manner, the area between any four concave point structures which are adjacent to each other in the upper-lower left-right direction is marked as a lower permeation area, and funnel-shaped micropores are arranged on the lower permeation area; the transverse drain-preventing region is provided with first bulge structures which are arranged in an array manner; and the longitudinal drain-preventing area is provided with second bulge structures which are arranged in an array manner.
The invention divides the non-woven fabric body into 3 areas: the central suction and permeation area, the transverse and longitudinal leakage prevention area and the longitudinal leakage prevention area are respectively provided with a 3D concave embossing and perforating design, so that urine and/or loose feces can be quickly leaked downwards, slip leakage is reduced, the contact area between baby skin and a wet surface layer is reduced, and long-acting dryness of buttocks is ensured. In addition, the transverse anti-drain region and the longitudinal anti-drain region adopt raised vertical grain structures, so that the liquid slipping resistance can be effectively increased, and the slipping risk of urine and/or loose stool can be reduced to a certain extent.
Further, the pit structure is a hemispherical pit; the diameter of the top of the funnel-shaped micropore is larger than that of the bottom, namely the funnel-shaped micropore is a funnel with wide top and narrow bottom. The hemispherical pits and the funnel micropores with wide upper part and narrow lower part are beneficial to the non-woven fabric body to rapidly conduct liquid downwards, so that the residual liquid amount on the surface of the non-woven fabric body is less, and the liquid absorption efficiency is effectively improved; in addition, the design of special punching of the funnel shape of upper width and lower width can make urine penetrate the top layer infiltration fast and advance the lower floor, but hardly from the lower floor infiltration back upper strata, returns the infiltration volume low, can effectually improve the top layer dry and comfortable nature, promotes the use travelling comfort.
Further, the diameter of the hemispherical pits is 3-5 mm, and the density is (5-8) per 100mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The diameter of the top of the funnel-shaped micropore is 1.0-1.5 mm, the diameter of the bottom is 0.5-1.0 mm, the height is 0.25-0.50 mm, and the density is (3-5) per 100mm 2 . The sizes and densities of the hemispherical pits and the funnel-shaped micro-holes are strictly and scientifically verified, and in the parameter range, the liquid absorptivity is high, the infiltration speed is high, the infiltration rate is low, and the use is comfortable.
Further, the first protruding structures are cylindrical protrusions or cuboid protrusions, the width of the tops of the first protruding structures is 1.5-3.0 mm, and the distance between two adjacent first protruding structures is 1-3 mm.
Further, the second protruding structures are cylindrical protrusions or cuboid protrusions, the width of the tops of the second protruding structures is 1.5-3.0 mm, and the distance between two adjacent second protruding structures is 1-3 mm.
The design of 3D vertical grain embossing is adopted for both the transverse anti-drain region and the longitudinal anti-drain region, so that the sliding resistance of urine can be increased to a certain extent, and the risk of urine leakage is reduced.
Further, the non-woven fabric body comprises an upper non-woven fabric and a lower non-woven fabric which are integrated into a whole, wherein the upper non-woven fabric is a weak hydrophilic fiber non-woven fabric, and the lower non-woven fabric is a single hydrophilic fiber non-woven fabric.
For weak-philic non-woven fabrics, the liquid vertical infiltration effect is good, the surface is not diffused transversely, and the liquid is diffused until penetrating into the lower layer (the diversion layer) (the liquid is generally matched with a lower layer material with strong diffusivity in the field of sanitary products for use), the reverse infiltration amount is relatively low, and the surface is relatively dry and comfortable. For the uniphilic non-woven fabric, the first penetration speed is relatively high when the liquid penetrates, and the subsequent liquid penetration speed is gradually reduced. The upper layer of the non-woven fabric is made of the weak-philic non-woven fabric, and the lower layer of the non-woven fabric is made of the single-philic non-woven fabric, so that urine and/or urine can quickly infiltrate downwards, can not laterally spread on the surface, improves the comfort of use, and can effectively reduce the phenomena of red buttocks and urine leakage when the non-woven fabric is applied to infant paper diapers.
Further, funnel-shaped micropores on the central suction and permeation area penetrate through the upper layer and the lower layer of non-woven fabrics; and the concave point structure on the central suction and permeation area and the first convex structure on the transverse drain-preventing area are formed in the upper layer and the lower layer of non-woven fabrics.
Further, the gram weight of the upper layer non-woven fabric is 15-25 gsm, and the thickness is 0.40-0.65 mm; the gram weight of the non-woven fabric lower layer is 15-25 gsm, and the thickness is 0.30-0.50 mm. Within these parameters, the product is soft and comfortable, and has fast liquid absorption and good liquid storage capacity.
Further, the upper layer non-woven fabric and the lower layer non-woven fabric are hot air non-woven fabrics, and the hot air non-woven fabrics have the advantages of high bulk, good elasticity, soft hand feeling, good air permeability and water permeability and the like.
Further, the length of the central suction and permeation area is 80-400 mm, and the width is 80-120 mm; the length of the transverse drain-preventing area is 80-400 mm, the width of the transverse drain-preventing area is 35-50 mm, the length of the longitudinal drain-preventing area is 30-190 mm, and the width of the longitudinal drain-preventing area is 150-220 mm.
In the present invention, the width refers to the length from top to bottom (vertical direction) in terms of the up-down direction; the length is measured in the left-right direction and refers to the length from left to right (transverse direction). The design parameters of the central suction and seepage area, the transverse seepage-proofing area and the longitudinal seepage-proofing area are scientifically verified, and the non-woven fabric body adopts such a plan and design, so that the capacities of liquid suction, liquid guide, backflow prevention and leakage prevention can be exerted to the best. In particular, when the parameter design is adopted, the method is more suitable for manufacturing infant sanitary products, such as infant paper diapers, infant pull-up pants and the like, and is matched with the body shape of babies.
Further, the concave point structures, the first convex structures and the second convex structures are all arranged in a matrix array, and the arrangement mode is proper, so that the product performance is best, and the industrialized production is facilitated.
The second purpose of the invention is realized by adopting the following technical scheme:
a preparation method of hydrophilic non-woven fabric for sanitary products comprises the following steps:
and (3) compounding: taking an upper non-woven fabric and a lower non-woven fabric, and performing ultrasonic compounding on the upper non-woven fabric and the lower non-woven fabric to obtain a non-woven fabric body;
embossing: and (3) pulling the non-woven fabric body into an embossing roller, wherein the pulling speed of the non-woven fabric body is 50-60 m/min, the heating temperature of the embossing roller is 130-140 ℃, the circumference of a roller shaft of the embossing roller is an integral multiple of the total length of the non-woven fabric body, the length of the roller is an integral multiple of the width of the non-woven fabric body, and the non-woven fabric body is formed by the embossing roller.
The invention combines the upper non-woven fabric and the lower non-woven fabric by utilizing ultrasonic waves, and has the advantages of high speed, high efficiency, energy saving and high fusion strength of the upper non-woven fabric and the lower non-woven fabric. When embossing operation is carried out, the heating temperature of the embossing roller is set to be 130-140 ℃, fibers on the non-woven fabric body can be melted at the heating temperature, and then shaping is carried out under the extrusion of the embossing roller; the traction speed of the non-woven fabric body is 50-60 m/min, the speed is relatively low, and the stable shaping of the product can be ensured.
The third purpose of the invention is realized by adopting the following technical scheme:
the hydrophilic non-woven fabric for the sanitary article is applied to disposable sanitary articles, and comprises infant paper diapers, infant pull-up pants, adult sanitary napkins, menstrual pants, adult paper diapers, adult incontinence pants, adult pull-up pants and urine isolation pads.
Compared with the prior art, the invention has the beneficial effects that:
(1) The hydrophilic non-woven fabric for the sanitary articles provided by the invention is particularly suitable for manufacturing the surface layer and the surface layer of disposable sanitary articles (such as infant paper diapers and infant pull-up pants). The invention divides the non-woven fabric body into a rapid suction and seepage area and a leakage-proof area. Wherein inhale the central point that oozes the district fast and lie in the non-woven fabrics body puts, it adopts 3D pit knurling structure and funnel-shaped micropore design, and pit structure has reduced the area of contact of moist top layer and skin on the one hand, promotes the dryness, and on the other hand can effectively absorb urine/rare just, reduces the urine leakage risk. Meanwhile, the funnel-shaped micropores can help urine to permeate down quickly, so that the absorption efficiency is greatly improved. The concave point structure and the funnel-shaped micropores are combined in a crossing manner and act synergistically, so that the absorption efficiency of the diaper is greatly improved. According to the invention, the anti-leakage area is arranged around the rapid seepage-absorbing area, the transverse anti-leakage area and the longitudinal anti-leakage area are both provided with the convex structures, namely, the anti-leakage area adopts the 3D vertical line embossing design, so that the sliding leakage resistance of urine can be increased to a certain extent, and the leakage risk is reduced.
(2) The preparation method of the hydrophilic non-woven fabric for the sanitary articles provided by the invention has the advantages of few process steps and convenient flow operation, and is suitable for industrial production.
Drawings
FIG. 1 is a schematic view of a hydrophilic nonwoven for hygienic products according to an embodiment of the present invention;
FIG. 2 is a schematic view showing the pit structure and the perforation structure of the central suction and permeation area of the hydrophilic nonwoven for the sanitary products according to the embodiment of the present invention;
fig. 3 is a schematic view of a first protrusion structure of a lateral anti-drain region of a hydrophilic nonwoven for a sanitary article according to an embodiment of the present invention;
fig. 4 is a schematic view of a second protrusion structure of a longitudinal anti-drain region of a hydrophilic nonwoven for sanitary products according to an embodiment of the present invention;
fig. 5 is a schematic diagram of funnel-shaped micropores of a hydrophilic nonwoven for sanitary products according to an embodiment of the present invention.
In the figure: 10. a central suction zone; 11. a pit structure; 12. funnel-shaped micropores; 20. a lateral drain prevention region; 21. a first bump structure; 30. a longitudinal drain-preventing region; 31. and a second bump structure.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Example 1
As shown in fig. 1 to 5, a hydrophilic nonwoven for sanitary products comprises a nonwoven body, wherein the nonwoven body is composed of an upper layer of nonwoven and a lower layer of nonwoven which are sequentially compounded from top to bottom, and the upper layer of nonwoven and the lower layer of nonwoven are both hot air nonwoven; the upper non-woven fabric is a weak hydrophilic fiber layer, the gram weight is 20gsm, and the thickness is 0.45mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 18gsm, and the thickness is 0.35mm. The non-woven fabric body is divided into three large areas, namely a central suction and seepage area 10, a transverse drain-proof area 20 and a longitudinal drain-proof area 30.
The central suction and permeation area 10 is positioned at the central position of the non-woven fabric body, the total length is 300mm, and the total width is 90mm. The central suction and permeation area 10 is provided with a hemispherical concave point structure 11, the diameter of the hemispherical concave point structure 11 is 3mm, and the density is 8/100 mm 2 The hemispherical concave structures 11 are arranged in parallel in the lateral and longitudinal directions. The area between any four hemispherical concave structures 11 which are adjacent from top to bottom and from left to right is marked as a lower seepage area, and funnel-shaped micropores 12 are arranged on the lower seepage area; the funnel-shaped micro-holes 12 have a top diameter of 1.2mm, a bottom diameter of 1.0mm, a height of 0.28mm, and a density of 3/100 mm 2 。
The number of the transverse drain-preventing areas 20 is two, and the two transverse drain-preventing areas 20 are respectively positioned on the upper side and the lower side of the rapid infiltration area. The width of the lateral drain prevention region 20 is 35mm and the length is 300mm. The transverse drain-preventing region 20 is provided with first raised structures 21 which are arranged in an array, the first raised structures 21 are cylindrical vertical grains, the diameter of the vertical grains is 1.5mm, and the interval between the vertical grains is 2mm.
The number of the longitudinal drain preventing areas 30 is two, and the two longitudinal drain preventing areas 30 are respectively positioned at the left side and the right side of the central suction and permeation area 10. The longitudinal drain prevention region 30 has a width of 160mm and a length of 90mm. The second raised structures 31 which are arranged in an array manner are arranged on the longitudinal drain-preventing region 30, the second raised structures 31 are cylindrical vertical grains, the diameter of the vertical grains is 1.5mm, and the spacing between the vertical grains is 2mm.
The hydrophilic nonwoven provided in example 1 was used on a diaper, and the preparation process was performed according to the following steps:
and (3) compounding: taking an upper non-woven fabric and a lower non-woven fabric, and performing ultrasonic compounding on the upper non-woven fabric and the lower non-woven fabric to obtain a non-woven fabric body;
embossing: and (3) pulling the non-woven fabric body into an embossing roller, wherein the pulling speed of the non-woven fabric body is set to be 55m/min, the heating temperature of the embossing roller is set to be 135 ℃, the circumference of a roller shaft of the embossing roller is an integral multiple of the total length of the non-woven fabric body, the length of the roller is an integral multiple of the width of the non-woven fabric body, and the non-woven fabric body is obtained through embossing forming of the embossing roller.
In fig. 1, the vertical arrow indicates the width direction, and the horizontal arrow indicates the length direction.
Example 2
The hydrophilic non-woven fabric for the sanitary article comprises a non-woven fabric body, wherein the non-woven fabric body is composed of an upper non-woven fabric and a lower non-woven fabric which are sequentially compounded from top to bottom, and the upper non-woven fabric and the lower non-woven fabric are hot air non-woven fabrics; the upper non-woven fabric is a weak hydrophilic fiber layer, the gram weight is 15gsm, and the thickness is 0.4mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 15gsm, and the thickness is 0.3mm. The non-woven fabric body is divided into three large areas, namely a central seepage-absorbing area, a transverse drain-preventing area and a longitudinal drain-preventing area.
The central suction and permeation area is positioned at the central position of the non-woven fabric body, the total length is 400mm, and the total width is 80mm. The central suction and permeation area is provided with a hemispherical concave point structure, the diameter of the hemispherical concave point structure is 5mm, and the density is 5/100 mm 2 The hemispherical concave structures are arranged in parallel in the transverse direction and the longitudinal direction. The areas between any four hemispherical concave structures which are adjacent up, down, left and right are marked as lower seepage areas, and funnel-shaped micropores are arranged on the lower seepage areas; the diameter of the top of the funnel-shaped micropore is 1mm, the diameter of the bottom is 0.5mm, the height is 0.25mm, and the density is 5/100 mm 2 。
The number of the transverse drain-preventing areas is two, and the two transverse drain-preventing areas are respectively positioned at the upper side and the lower side of the rapid infiltration area. The width of the transverse drain-preventing area is 50mm, and the length is 400mm. The transverse drain-preventing region is provided with a first protruding structure arranged in an array, the first protruding structure is a cylinder vertical grain, the diameter of the vertical grain is 3mm, and the interval between the vertical grains is 1mm.
The number of the longitudinal leakage preventing areas is two, and the two longitudinal leakage preventing areas are respectively positioned at the left side and the right side of the central suction and permeation area. The width of the longitudinal drain-preventing area is 180mm, and the length is 30mm. The vertical drain area is provided with a second protruding structure arranged in an array, the second protruding structure is a cylinder vertical grain, the diameter of the vertical grain is 3mm, and the interval between the vertical grains is 1mm.
The preparation method is the same as in example 1.
Example 3
The hydrophilic non-woven fabric for the sanitary article comprises a non-woven fabric body, wherein the non-woven fabric body is composed of an upper non-woven fabric and a lower non-woven fabric which are sequentially compounded from top to bottom, and the upper non-woven fabric and the lower non-woven fabric are hot air non-woven fabrics; the upper non-woven fabric is a weak hydrophilic fiber layer, the gram weight is 25gsm, and the thickness is 0.65mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 25gsm, and the thickness is 0.5mm. The non-woven fabric body is divided into three large areas, namely a central seepage-absorbing area, a transverse drain-preventing area and a longitudinal drain-preventing area.
The central suction and permeation area is positioned at the central position of the non-woven fabric body, the total length is 80mm, and the total width is 120mm. The central suction and permeation area is provided with a hemispherical concave point structure, the diameter of the hemispherical concave point structure is 4mm, and the density is 6/100 mm 2 The hemispherical concave structures are arranged in parallel in the transverse direction and the longitudinal direction. The areas between any four hemispherical concave structures which are adjacent up, down, left and right are marked as lower seepage areas, and funnel-shaped micropores are arranged on the lower seepage areas; the diameter of the top of the funnel-shaped micropore is 1.5mm, the diameter of the bottom is 1.2mm, the height is 0.5mm, and the density is 4/100 mm 2 。
The number of the transverse drain-preventing areas is two, and the two transverse drain-preventing areas are respectively positioned at the upper side and the lower side of the rapid infiltration area. The width of the transverse drain-preventing area is 40mm, and the length is 80mm. The transverse drain-preventing region is provided with a first protruding structure arranged in an array, the first protruding structure is a cylindrical vertical grain, the diameter of the vertical grain is 2mm, and the interval between the vertical grains is 3mm.
The number of the longitudinal leakage preventing areas is two, and the two longitudinal leakage preventing areas are respectively positioned at the left side and the right side of the central suction and permeation area. The width of the longitudinal drain-preventing area is 200mm, and the length is 190mm. The vertical drain area is provided with a second protruding structure arranged in an array, the second protruding structure is a cylinder vertical grain, the diameter of the vertical grain is 2mm, and the interval between the vertical grains is 3mm.
The preparation method is the same as in example 1.
Example 4
The hydrophilic non-woven fabric for the sanitary article comprises a non-woven fabric body, wherein the non-woven fabric body is composed of an upper non-woven fabric and a lower non-woven fabric which are sequentially compounded from top to bottom, and the upper non-woven fabric and the lower non-woven fabric are hot air non-woven fabrics; the upper non-woven fabric is a weak hydrophilic fiber layer, the gram weight is 18gsm, and the thickness is 0.55mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 20gsm, and the thickness is 0.55mm. The non-woven fabric body is divided into three large areas, namely a central seepage-absorbing area, a transverse drain-preventing area and a longitudinal drain-preventing area.
The central suction and permeation area is positioned at the central position of the non-woven fabric body, the total length is 300mm, and the total width is 90mm. The central suction and permeation area is provided with a hemispherical concave point structure, the diameter of the hemispherical concave point structure is 4.5mm, and the density is 7/100 mm 2 The hemispherical concave structures are arranged in parallel in the transverse direction and the longitudinal direction. The areas between any four hemispherical concave structures which are adjacent up, down, left and right are marked as lower seepage areas, and funnel-shaped micropores are arranged on the lower seepage areas; the diameter of the top of the funnel-shaped micropore is 1.3mm, the diameter of the bottom is 1.1mm, the height is 0.45mm, and the density is 4/100 mm 2 。
The number of the transverse drain-preventing areas is two, and the two transverse drain-preventing areas are respectively positioned at the upper side and the lower side of the rapid infiltration area. The width of the transverse drain-preventing area is 35mm, and the length is 300mm. The transverse drain-preventing region is provided with a first protruding structure arranged in an array, the first protruding structure is a cylindrical vertical grain, the diameter of the vertical grain is 2.5mm, and the interval between the vertical grains is 2.5mm.
The number of the longitudinal leakage preventing areas is two, and the two longitudinal leakage preventing areas are respectively positioned at the left side and the right side of the central suction and permeation area. The width of the longitudinal drain-preventing area is 160mm, and the length is 90mm. The vertical drain area is provided with a second protruding structure arranged in an array, the second protruding structure is a cylinder vertical grain, the diameter of the vertical grain is 12.5mm, and the interval between the vertical grains is 2.5mm.
The preparation method is the same as in example 1.
Comparative example 1
Comparative example 1 differs from example 1 in that: the upper non-woven fabric and the lower non-woven fabric are only subjected to ultrasonic compounding, subsequent embossing operation is not performed, and a 3D fixed-point embossing design is not adopted.
Comparative example 2
Comparative example 2 is different from example 1 in that: the microporous structure on the central suction and permeation area is not in a funnel-shaped design with a wide upper part and a narrow lower part, but is designed into cylindrical micropores with the same top diameter and bottom diameter.
The remainder was the same as in example 1.
Comparative example 3
Comparative example 3 is different from example 1 in that: the central suction and permeation area is not provided with a hemispherical concave point structure, and conversely, the hemispherical concave point structure is replaced by a hemispherical convex point structure.
The remainder was the same as in example 1.
Comparative example 4
Comparative example 4 differs from example 1 in that: the first protruding structure is not designed on the transverse drain-preventing area.
The remainder was the same as in example 1.
Comparative example 5
Comparative example 5 is different from example 1 in that: the second bump structure is not designed on the longitudinal drain-preventing region.
The remainder was the same as in example 1.
Comparative example 6
Comparative example 6 differs from example 1 in that: the non-woven fabric body is not divided into 3 large areas, but the whole central suction and seepage area is designed, and the transverse drain preventing area and the longitudinal drain preventing area are not arranged.
The remainder was the same as in example 1.
Comparative example 7
Comparative example 7 differs from example 1 in that: the upper layer non-woven fabric is a single-parent non-woven fabric, and the lower layer non-woven fabric is a multi-parent non-woven fabric.
The remainder was the same as in example 1.
Comparative example 8
Comparative example 8 differs from example 1 in that: the upper layer non-woven fabric and the lower layer non-woven fabric are spun-bonded non-woven fabrics.
The remainder was the same as in example 1.
Comparative example 9
Comparative example 9 is different from example 1 in that: in the central suction zone, the hemispherical pit structure has a diameter of 6mm and a density of 3/100 mm 2 The diameter of the top of the funnel-shaped micropore is 0.8mm, the diameter of the bottom is 0.2mm, the height is 0.2mm, and the density is 6/100 mm 2 。
The remainder was the same as in example 1.
Comparative example 10
Comparative example 10 differs from example 1 in that: in the transverse drain-preventing region, the diameter of the first protruding structure is 3.5mm, and the spacing between vertical grains is 3.5mm; in the longitudinal drain-preventing region, the diameter of the second raised structure is 3.5mm, and the spacing between the vertical grains is 3.5mm.
The remainder was the same as in example 1.
Comparative example 11
Comparative example 11 differs from example 1 in that: in the embossing step of the preparation process, the traction speed of the nonwoven body was 65m/min.
The remainder was the same as in example 1.
Evaluation of Effect
The nonwoven fabrics of examples 1 to 4 and comparative examples 1 to 11 were respectively used for the permeation time, rewet amount, and overflow amount test. The test methods are described below and the test results are shown in table 1 below.
The first liquid penetration time, the second liquid penetration time and the third liquid penetration time test method refers to GB/T24218.2010 textile-non-woven fabric test method-part 8: measurement of liquid penetration time (simulated urine). Rewet test method reference GB/T24218.2010 textile-nonwoven test method-part 14: measurement of rewet of the coating material. Test method for transverse and longitudinal overflow amounts reference GB/T24218.2010 textile-nonwoven test method-part 11: and measuring the overflow quantity.
TABLE 1 Table of results of nonwoven fabrics Performance test of examples 1-4 and comparative examples 1-11
From the records in Table 1, it is clear that the liquid penetration times and rewet amounts according to the 1 st to 3 rd times are significantly faster and lower for the examples than for the comparative examples. The structure design of funnel-shaped micropore structures and concave points contained in the central suction and permeation area is reasonable, on one hand, the non-woven fabric is beneficial to rapidly conducting liquid to the lower layer, so that the residual liquid amount on the surface of the non-woven fabric is less, and the liquid absorption efficiency is effectively improved; on the other hand, the funnel-shaped punching design has wide upper part and narrow lower part, and liquid is difficult to return to the surface after infiltration, so that the infiltration quantity is lower and drier.
As is clear from the overflow amounts of the comparative examples and comparative examples, almost no liquid overflows in the examples, both the transverse overflow amount and the longitudinal overflow amount. This illustrates that the convex structures included in the lateral drain prevention region and the longitudinal drain prevention region of the embodiment of the present invention can effectively prevent liquid from leaking out.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (6)
1. The hydrophilic non-woven fabric for the sanitary articles is characterized by comprising a non-woven fabric body, wherein the non-woven fabric body comprises an upper non-woven fabric layer and a lower non-woven fabric layer which are integrated into a whole, a central suction and permeation area is arranged in the middle area of the non-woven fabric body, transverse drain-preventing areas are arranged on the upper side and the lower side of the central suction and permeation area, and longitudinal drain-preventing areas are arranged on the left side and the right side of the central suction and permeation area; the central suction and permeation area is provided with concave point structures which are arranged in an array manner, the area between any four concave point structures which are adjacent to each other in the upper-lower left-right direction is marked as a lower permeation area, and funnel-shaped micropores are arranged on the lower permeation area; the transverse drain-preventing region is provided with first bulge structures which are arranged in an array manner; the longitudinal drain-preventing region is provided with second bulge structures which are arranged in an array manner;
the pit structure is a hemispherical pit; the top diameter of the funnel-shaped micropores is larger than the bottom diameter;
the diameter of the hemispherical pits is 3-5 mm, and the density is (5-8) per 100mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The diameter of the top of the funnel-shaped micropore is 1.0-1.5 mm, the diameter of the bottom of the funnel-shaped micropore is 0.5-1.0 mm, the height of the funnel-shaped micropore is 0.25-0.50 mm, and the density of the funnel-shaped micropore is (3-5) pieces/100 mm 2 ；
The first protruding structures are cylindrical protrusions or cuboid protrusions, the width of the tops of the first protruding structures is 1.5-3.0 mm, and the distance between two adjacent first protruding structures is 1-3 mm;
the second protruding structures are cylindrical protrusions or cuboid protrusions, the width of the tops of the second protruding structures is 1.5-3.0 mm, and the distance between two adjacent second protruding structures is 1-3 mm;
the hydrophilic non-woven fabric for the sanitary article comprises a compounding step and an embossing step in the preparation process, wherein in the compounding step, the upper non-woven fabric and the lower non-woven fabric are subjected to ultrasonic compounding to form the non-woven fabric body; in the embossing step, the non-woven fabric body is drawn into an embossing roller, the drawing speed of the non-woven fabric body is set to be 50-60 m/min, the heating temperature of the embossing roller is 130-140 ℃, the circumference of a roller shaft of the embossing roller is an integral multiple of the total length of the non-woven fabric body, the length of the roller is an integral multiple of the width of the non-woven fabric body, and the non-woven fabric body is molded by the embossing roller to obtain the hydrophilic non-woven fabric for the sanitary article.
2. The hydrophilic nonwoven for sanitary products according to claim 1, wherein the upper nonwoven is a weak hydrophilic fiber nonwoven and the lower nonwoven is a single hydrophilic fiber nonwoven.
3. The hydrophilic nonwoven for hygienic products according to claim 1, wherein the upper nonwoven has a grammage of 15 to 25gsm and a thickness of 0.40 to 0.65mm; the gram weight of the lower non-woven fabric is 15-25 gsm, and the thickness of the lower non-woven fabric is 0.30-0.50 mm.
4. The hydrophilic nonwoven for hygienic products according to claim 1, wherein the central suction zone has a length of 80 to 400mm and a width of 80 to 120mm; the length of the transverse drain-preventing area is 80-400 mm, the width of the transverse drain-preventing area is 35-50 mm, the length of the longitudinal drain-preventing area is 30-190 mm, and the width of the longitudinal drain-preventing area is 150-220 mm.
5. A method for preparing a hydrophilic nonwoven for hygienic products according to any one of claims 1 to 4, comprising the steps of:
and (3) compounding: taking an upper non-woven fabric and a lower non-woven fabric, and performing ultrasonic compounding on the upper non-woven fabric and the lower non-woven fabric to obtain a non-woven fabric body;
embossing: and (3) pulling the non-woven fabric body into an embossing roller, wherein the pulling speed of the non-woven fabric body is 50-60 m/min, the heating temperature of the embossing roller is 130-140 ℃, the circumference of a roller shaft of the embossing roller is an integral multiple of the total length of the non-woven fabric body, the length of the roller is an integral multiple of the width of the non-woven fabric body, and the non-woven fabric body is formed by embossing roller.
6. The use of the hydrophilic nonwoven for sanitary products according to any one of claims 1 to 4 in disposable sanitary products, including infant diapers, infant pull-up pants, adult sanitary napkins, menstrual pants, adult diapers, adult incontinence pants, adult pull-up pants and urine insulation pads.
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Address after: Room 188, room 406, 1 Yichuang street, Zhongxin Guangzhou Knowledge City, Huangpu District, Guangzhou City, Guangdong Province, 510555 Applicant after: Lule Health Technology Co.,Ltd. Address before: Room 188, room 406, 1 Yichuang street, Zhongxin Guangzhou Knowledge City, Huangpu District, Guangzhou City, Guangdong Province, 510130 Applicant before: Lule Health Technology (Guangzhou) Co.,Ltd. |
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Denomination of invention: A hydrophilic non-woven fabric for sanitary products and its preparation method and application Granted publication date: 20240112 Pledgee: China Construction Bank Corporation Guangzhou Artificial Intelligence and Digital Economy Experimental Zone Branch Pledgor: Lule Health Technology Co.,Ltd. Registration number: Y2024980008244 |