CN215689086U - Hydrophilic non-woven fabric for hygienic products - Google Patents
Hydrophilic non-woven fabric for hygienic products Download PDFInfo
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- CN215689086U CN215689086U CN202022869586.9U CN202022869586U CN215689086U CN 215689086 U CN215689086 U CN 215689086U CN 202022869586 U CN202022869586 U CN 202022869586U CN 215689086 U CN215689086 U CN 215689086U
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Abstract
The utility model discloses a hydrophilic non-woven fabric for hygienic products, wherein the middle area of the non-woven fabric is set as a central absorption and permeation area, the upper side and the lower side of the central absorption and permeation area are both provided with transverse leakage-proof areas, and the left side and the right side of the central absorption and permeation area are both provided with longitudinal leakage-proof areas; the central suction and seepage area is provided with a concave point structure and funnel-shaped micropores; a first bulge structure is arranged on the transverse leakage-proof area; and a second bulge structure is arranged on the longitudinal drain preventing region. The non-woven fabric body is divided into 3 areas, and the central absorption and permeation area adopts the design of concave point embossing and punching, so that urine/loose stool rapidly permeates downwards, the contact area of the skin of a baby and a wet surface layer can be reduced, and long-acting dry and comfortable fart is ensured. And the transverse leakage-proof area and the longitudinal leakage-proof area adopt a raised vertical stripe structure, so that the liquid slippage resistance can be effectively increased, and the slippage risk is reduced.
Description
Technical Field
The utility model relates to the technical field of disposable hygienic products, in particular to a hydrophilic non-woven fabric for a hygienic product.
Background
According to statistics, the market scale of the Chinese baby diaper in 2019 reaches 499.0 billion yuan, the market permeability is increased from 63.9% to 72.2% in 2018, and the diaper becomes a necessity for infant care. With the increase of the popularity of the paper diaper, various problems are gradually revealed in the actual use process. Various problems increase the discomfort of the infants and cause great trouble to parents. Among them, "red wind flatus" and "leakage of urine" are the most representative. Therefore, it is imperative to develop a product that reduces "red wind flatus" and "leakage of urine".
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a hydrophilic non-woven fabric for a sanitary article, which comprises a suction and seepage area and a leakage-proof area, so that on one hand, urine and loose stool can quickly seep downwards and cannot seep downwards, and on the other hand, the contact area between the skin of a baby and a moist surface layer can be reduced, and the risk of red fart is reduced; on the other hand, the leakage-proof area can increase the urine and excrement slip resistance and effectively reduce the slip leakage.
The utility model also aims to provide a preparation method of the hydrophilic non-woven fabric for the hygienic product, which is simple and convenient in process and suitable for industrial production.
The utility model also aims to apply the hydrophilic non-woven fabric to sanitary products.
One of the purposes of the utility model is realized by adopting the following technical scheme:
a hydrophilic non-woven fabric for hygienic products 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 leakage prevention areas are arranged on the upper side and the lower side of the central suction and permeation area, and longitudinal leakage prevention areas are arranged on the left side and the right side of the central suction and permeation area; the central seepage suction 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 up, down, left and right is marked as an infiltration area, and funnel-shaped micropores are arranged on the infiltration area; first protruding structures arranged in an array mode are arranged on the transverse leakage-proof area; and second protruding structures arranged in an array manner are arranged on the longitudinal leakage-proof area.
The utility model divides the non-woven fabric body into 3 areas: the diaper comprises a central absorption and seepage area, a transverse leakage-proof area and a longitudinal leakage-proof area, wherein the central absorption and seepage area is a rapid absorption and seepage area, and a 3D concave point embossing and punching design is adopted, so that on one hand, urine and/or loose stool can rapidly seep downwards, sliding leakage is reduced, on the other hand, the contact area between the skin of the baby and a wet surface layer can be reduced, and long-acting dry and comfortable fart is ensured. In addition, the transverse leakage-proof area and the longitudinal leakage-proof area adopt a raised vertical stripe structure, so that the liquid slippage resistance can be effectively increased, and the slippage risk of urine and/or loose excrement is reduced to a certain extent.
Further, the pit structure is a hemispherical pit; the top diameter of the funnel-shaped micropores is larger than the bottom diameter, namely the funnel-shaped micropores are wide at the top and narrow at the bottom. The hemispherical concave points and the funnel micropores with wide upper parts and narrow lower parts are beneficial to the non-woven fabric body to rapidly conduct liquid downwards, so that the amount of liquid remained on the surface of the non-woven fabric body is less, and the liquid absorption efficiency is effectively improved; in addition, narrow infundibulate special perforation design under the upper width can make the urine penetrate the top layer fast and permeate into the lower floor, nevertheless hardly returns from the lower floor and oozes the upper strata, and the rewet volume is low, can effectual improvement top layer dry and comfortable nature, promotes and uses the travelling comfort.
Furthermore, the diameter of the hemispherical pits is 3-5 mm, and the density is (5-8)/100 mm2(ii) a The diameter of the top of the funnel-shaped micropores is 1.0-1.5 mm, the diameter of the bottom of the funnel-shaped micropores is 0.5-1.0 mm, the height of the funnel-shaped micropores is 0.25-0.50 mm, and the density of the funnel-shaped micropores is (3-5)/100 mm2. The sizes and densities of the hemispherical concave points and the funnel-shaped micropores are strictly and scientifically verified, and in the parameter range, the liquid absorption rate is high, the infiltration speed is high, the rewet rate is low, and the use is comfortable.
Further, first protruding structure is that the cylinder is protruding or the cuboid is protruding, the top width of first protruding structure is 1.5 ~ 3.0mm, adjacent two the interval of first protruding structure is 1 ~ 3 mm.
Further, the protruding structure of second is that the cylinder is protruding or the cuboid is protruding, the top width of the protruding structure of second is 1.5 ~ 3.0mm, adjacent two the interval of the protruding structure of second is 1 ~ 3 mm.
The transverse leakage-proof area and the longitudinal leakage-proof area are both designed by adopting 3D vertical grain embossing, so that the sliding leakage resistance of urine can be increased to a certain extent, and the urine leakage risk is reduced.
Further, the non-woven fabrics body includes compound integrative upper non-woven fabrics and lower floor's non-woven fabrics, the upper non-woven fabrics is the weak hydrophilic fiber non-woven fabrics, the non-woven fabrics of lower floor is single hydrophilic fiber non-woven fabrics.
For weak hydrophilic non-woven fabrics, the liquid has good vertical infiltration effect, the surface is not diffused transversely, the liquid penetrates to a lower layer (a flow guide layer) and is diffused (generally matched with a lower layer material with strong diffusivity in the field of sanitary products), the reverse osmosis amount is lower, and the surface is dry and comfortable. For the single-parent non-woven fabric, when liquid penetrates through the single-parent non-woven fabric, the first penetration speed is high, and the subsequent liquid penetration speed is gradually reduced. The upper layer of the non-woven fabric is the weak-hydrophilic non-woven fabric, the lower layer of the non-woven fabric is the single-hydrophilic non-woven fabric, urine and/or loose stool can rapidly seep downwards and cannot transversely diffuse on the surface, the use comfort is improved, and the phenomena of 'red fara' and 'urine leakage' can be effectively reduced when the non-woven fabric is applied to the infant paper diaper.
Furthermore, the funnel-shaped micropores on the central suction and permeation area penetrate through the upper layer non-woven fabric and the lower layer non-woven fabric; and the concave point structure on the central suction and permeation area, the first convex structure on the transverse leakage-proof area and the second convex structure on the longitudinal leakage-proof area are formed in the upper and lower layers of non-woven fabrics.
Furthermore, the gram weight of the upper-layer non-woven fabric is 15-25 grams per square meter, and the thickness of the upper-layer non-woven fabric is 0.40-0.65 mm; the gram weight of the lower layer of the non-woven fabric is 15-25 grams per square meter, and the thickness of the lower layer of the non-woven fabric is 0.30-0.50 mm. Within the range of the parameters, the product is soft and comfortable, and has quick liquid absorption and good liquid storage capacity.
Furthermore, the upper non-woven fabric and the lower non-woven fabric are hot air non-woven fabrics, and the hot air non-woven fabrics have the advantages of high bulkiness, good elasticity, soft hand feeling, good air permeability, good water permeability and the like.
Further, the length of the central suction and permeation area is 80-400 mm, and the width of the central suction and permeation area is 80-120 mm; the length of the transverse leakage-proof area is 80-400 mm, the width of the transverse leakage-proof area is 35-50 mm, the length of the longitudinal leakage-proof area is 30-190 mm, and the width of the longitudinal leakage-proof area is 150-220 mm.
In the present invention, the width is in terms of the up-down direction, and means the length from top to bottom (vertical direction); the length is in terms of left-right direction, and refers to a length from left to right (lateral direction). The design parameters of the central imbibing region, the transverse leakage-proof region and the longitudinal leakage-proof region are scientifically verified, and the non-woven fabric body adopts the design and design, so that the capacities of imbibing, guiding, preventing back infiltration and preventing leakage can be exerted to the best. Particularly, when the parameter design is adopted, the method is more suitable for manufacturing infant sanitary products, such as infant paper diapers, infant pull-ups and the like, and is matched with the body type of an infant.
Furthermore, the concave point structures, the first convex structures and the second convex structures are arranged in a matrix array, are regular and orderly, and are arranged in a proper mode, so that the performance of the product is optimal, and the industrial production is facilitated.
The second purpose of the utility model is realized by adopting the following technical scheme:
a preparation method of hydrophilic non-woven fabric for hygienic products comprises the following steps:
compounding: taking an upper layer of non-woven fabric and a lower layer of non-woven fabric, and carrying out ultrasonic compounding on the upper layer of non-woven fabric and the lower layer of non-woven fabric to obtain a non-woven fabric body;
embossing: the non-woven fabric body is pulled to enter the embossing roller, the pulling 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 integral multiple of the total length of the non-woven fabric body, the length of the roller is integral multiple of the width of the non-woven fabric body, and the non-woven fabric body is obtained through embossing molding of the embossing roller.
The utility model combines the upper non-woven fabric and the lower non-woven fabric by using ultrasonic waves, and has the advantages of high speed, high efficiency, energy conservation 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 temperature, and then the non-woven fabric body is shaped 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 stable shaping of the product can be ensured.
The third purpose of the utility model is realized by adopting the following technical scheme:
the hydrophilic non-woven fabric for the sanitary product is applied to disposable sanitary products, and comprises infant paper diapers, infant pull-ups, adult sanitary towels, menstrual period pants, adult paper diapers, adult incontinence pants, adult pull-ups and urine isolation pads.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the hydrophilic non-woven fabric for the sanitary products is particularly suitable for manufacturing surface layers and surface layers of disposable sanitary products (such as infant paper diapers and infant pull-ups). The utility model divides the non-woven fabric body into a rapid absorption and permeation area and a leakage-proof area from the main function. Wherein inhale fast and ooze the central point position that the district is located the non-woven fabrics body, it adopts 3D pit knurling structure and infundibulate micropore design, and the pit structure has reduced the area of contact on the one hand moist top layer and skin, promotes dry and comfortable nature, and on the other hand can effectively absorb urine/thin stool, reduces the risk of leaking urine. Meanwhile, the funnel-shaped micropores can help urine to rapidly infiltrate downwards, and the absorption efficiency is greatly improved. The concave point structure and the funnel-shaped micropores are combined in a crossed mode, and the absorption efficiency of the diaper is improved to a great extent under the synergistic effect. According to the utility model, the leakage-proof areas are arranged around the rapid absorption and permeation area, the transverse leakage-proof area and the longitudinal leakage-proof area are both provided with the protruding structures, namely the leakage-proof areas adopt a 3D vertical grain embossing design, the sliding leakage resistance of urine can be increased to a certain extent by the design, and the urine leakage risk is reduced.
(2) The preparation method of the hydrophilic non-woven fabric for the hygienic product, provided by the utility model, has the advantages of few process steps and convenience in flow operation, and is suitable for industrial production.
Drawings
Fig. 1 is an overall schematic view of a hydrophilic nonwoven fabric for a sanitary product according to an embodiment of the present invention;
FIG. 2 is a schematic view of a concave structure and a perforated structure of a central suction-permeation region of a hydrophilic nonwoven fabric for a hygienic product according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a first protrusion of a transverse leakage-proof area of a hydrophilic nonwoven fabric for a hygienic product according to an embodiment of the present invention;
FIG. 4 is a schematic view of a second protrusion structure of a longitudinal leakage-proof area of a hydrophilic nonwoven fabric for a hygienic product according to an embodiment of the present invention;
fig. 5 is a schematic structural view of funnel-shaped micropores of a hydrophilic nonwoven fabric for a hygienic device 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 leakage prevention region; 21. a first bump structure; 30. a longitudinal leakage prevention region; 31. and a second bump structure.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example 1
As shown in fig. 1-5, a hydrophilic non-woven fabric for hygienic products comprises a non-woven fabric body, wherein the non-woven fabric body is composed of an upper non-woven fabric layer and a lower non-woven fabric layer which are sequentially compounded from top to bottom, and the upper non-woven fabric layer and the lower non-woven fabric layer are both hot air non-woven fabrics; the upper non-woven fabric layer is a weak hydrophilic fiber layer, the gram weight is 20 grams per square meter, and the thickness is 0.45 mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 18 grams per square meter, and the thickness is 0.35 mm. The non-woven fabric body is divided into three large areas, namely a central imbibition area 10, a transverse leakage-proof area 20 and a longitudinal leakage-proof area 30.
The central suction and permeation area 10 is located at the center of the non-woven fabric body, the total length is 300mm, and the total width is 90 mm. A hemispherical concave point structure is arranged on the central suction and infiltration area 1011, the diameter of the hemispherical pit structure 11 is 3mm, and the density is 8/100 mm2The hemispherical pit structures 11 are arranged in parallel in the transverse and longitudinal directions. The area between any four upper, lower, left and right adjacent hemispherical pit structures 11 is marked as an infiltration area, and funnel-shaped micropores 12 are arranged on the infiltration area; the diameter of the top of the funnel-shaped micropores 12 is 1.2mm, the diameter of the bottom is 1.0mm, the height is 0.28mm, and the density is 3/100 mm2。
The number of the transverse leakage-proof areas 20 is two, and the two transverse leakage-proof areas 20 are respectively positioned at the upper side and the lower side of the rapid absorption and permeation area. The width of the lateral leakage preventing region 20 is 35mm and the length is 300 mm. The transverse leakage-proof area 20 is provided with first protruding structures 21 which are arranged in an array mode, the first protruding structures 21 are cylindrical vertical stripes, the diameter of each vertical stripe is 1.5mm, and the distance between every two vertical stripes is 2 mm.
The number of the longitudinal leakage preventing regions 30 is two, and the two longitudinal leakage preventing regions 30 are respectively positioned at the left and right sides of the central suction and permeation region 10. The longitudinal leakage preventing region 30 has a width of 160mm and a length of 90 mm. The second protruding structures 31 arranged in an array mode are arranged on the longitudinal drain preventing region 30, the second protruding structures 31 are cylindrical vertical stripes, the diameter of each vertical stripe is 1.5mm, and the distance between every two vertical stripes is 2 mm.
The hydrophilic nonwoven fabric provided in example 1 is used for a diaper, and the preparation process is performed according to the following steps:
compounding: taking the upper non-woven fabric and the lower non-woven fabric, and carrying out ultrasonic compounding on the upper non-woven fabric and the lower non-woven fabric to obtain a non-woven fabric body;
embossing: the non-woven fabric body is drawn into the embossing roller, the drawing 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 integral multiple of the total length of the non-woven fabric body, the roller length is integral multiple of the width of the non-woven fabric body, and the non-woven fabric body is obtained by embossing through the embossing roller.
In fig. 1, vertical arrows indicate the width direction, and horizontal arrows indicate the length direction.
Example 2
A hydrophilic non-woven fabric for hygienic products comprises a non-woven fabric body, wherein the non-woven fabric body is composed of an upper non-woven fabric layer and a lower non-woven fabric layer which are sequentially compounded from top to bottom, and the upper non-woven fabric layer and the lower non-woven fabric layer are both hot air non-woven fabrics; the upper non-woven fabric layer is a weak hydrophilic fiber layer, the gram weight is 15 grams per square meter, and the thickness is 0.4 mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 15 grams per square meter, and the thickness is 0.3 mm. The non-woven fabric body is divided into three large areas, namely a central seepage absorption area, a transverse leakage-proof area and a longitudinal leakage-proof 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 80 mm. The central suction and infiltration area is provided with a hemispherical pit structure, the diameter of the hemispherical pit structure is 5mm, and the density of the hemispherical pit structure is 5/100 mm2The hemispherical pit structures are arranged in parallel in the transverse direction and the longitudinal direction. The area between any four hemispherical pit structures which are adjacent up, down, left and right is marked as an infiltration area, and funnel-shaped micropores are arranged on the infiltration area; 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 mm2。
The number of the transverse leakage-proof areas is two, and the two transverse leakage-proof areas are respectively positioned on the upper side and the lower side of the rapid infiltration absorption area. The width of the transverse leakage-proof area is 50mm, and the length is 400 mm. The transverse leakage-proof area is provided with first protruding structures which are arranged in an array mode, the first protruding structures are cylindrical vertical grains, the diameter of each vertical grain is 3mm, and the distance between every two vertical grains is 1 mm.
The two longitudinal leakage-proof areas are respectively positioned at the left side and the right side of the central suction-infiltration area. The width of the longitudinal leakage-preventing area is 180mm, and the length is 30 mm. The vertical drain region is provided with second protruding structures arranged in an array mode, the second protruding structures are cylindrical vertical grains, the diameter of each vertical grain is 3mm, and the distance between every two vertical grains is 1 mm.
The preparation method is the same as example 1.
Example 3
A hydrophilic non-woven fabric for hygienic products comprises a non-woven fabric body, wherein the non-woven fabric body is composed of an upper non-woven fabric layer and a lower non-woven fabric layer which are sequentially compounded from top to bottom, and the upper non-woven fabric layer and the lower non-woven fabric layer are both hot air non-woven fabrics; the upper non-woven fabric layer is a weak hydrophilic fiber layer, the gram weight is 25 grams per square meter, and the thickness is 0.65 mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 25 grams per square meter, and the thickness is 0.5 mm. The non-woven fabric body is divided into three large areas, namely a central seepage absorption area, a transverse leakage-proof area and a longitudinal leakage-proof 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 120 mm. The central suction and infiltration 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 mm2The hemispherical pit structures are arranged in parallel in the transverse direction and the longitudinal direction. The area between any four hemispherical pit structures which are adjacent up, down, left and right is marked as an infiltration area, and funnel-shaped micropores are arranged on the infiltration area; 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 mm2。
The number of the transverse leakage-proof areas is two, and the two transverse leakage-proof areas are respectively positioned on the upper side and the lower side of the rapid infiltration absorption area. The width of the transverse leakage-proof area is 40mm, and the length is 80 mm. The transverse leakage-proof area is provided with first protruding structures which are arranged in an array mode, the first protruding structures are cylindrical vertical grains, the diameter of each vertical grain is 2mm, and the distance between every two vertical grains is 3 mm.
The two longitudinal leakage-proof areas are respectively positioned at the left side and the right side of the central suction-infiltration area. The width of the longitudinal leakage-proof area is 200mm, and the length is 190 mm. The vertical drain region is provided with second protruding structures arranged in an array mode, the second protruding structures are cylindrical vertical grains, the diameter of each vertical grain is 2mm, and the distance between every two vertical grains is 3 mm.
The preparation method is the same as example 1.
Example 4
A hydrophilic non-woven fabric for hygienic products comprises a non-woven fabric body, wherein the non-woven fabric body is composed of an upper non-woven fabric layer and a lower non-woven fabric layer which are sequentially compounded from top to bottom, and the upper non-woven fabric layer and the lower non-woven fabric layer are both hot air non-woven fabrics; the upper non-woven fabric layer is a weak hydrophilic fiber layer, the gram weight is 18 grams per square meter, and the thickness is 0.55 mm; the lower layer of the non-woven fabric is a single hydrophilic fiber layer, the gram weight is 20 grams per square meter, and the thickness is 0.55 mm. The non-woven fabric body is divided into three large areas, namely a central seepage absorption area, a transverse leakage-proof area and a longitudinal leakage-proof 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 90 mm. The central suction and infiltration 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 mm2The hemispherical pit structures are arranged in parallel in the transverse direction and the longitudinal direction. The area between any four hemispherical pit structures which are adjacent up, down, left and right is marked as an infiltration area, and funnel-shaped micropores are arranged on the infiltration area; 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 mm2。
The number of the transverse leakage-proof areas is two, and the two transverse leakage-proof areas are respectively positioned on the upper side and the lower side of the rapid infiltration absorption area. The width of the transverse leakage-proof area is 35mm, and the length is 300 mm. The transverse leakage-proof area is provided with first protruding structures which are arranged in an array mode, the first protruding structures are cylindrical vertical grains, the diameter of each vertical grain is 2.5mm, and the distance between every two vertical grains is 2.5 mm.
The two longitudinal leakage-proof areas are respectively positioned at the left side and the right side of the central suction-infiltration area. The width of the longitudinal leakage-preventing region is 160mm, and the length is 90 mm. The vertical leakage-proof area is provided with second protruding structures which are arranged in an array mode, the second protruding structures are cylindrical vertical grains, the diameter of each vertical grain is 12.5mm, and the distance between every two vertical grains is 2.5 mm.
The preparation method is the same as 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 carried out, and a 3D fixed-point embossing design is not adopted.
Comparative example 2
Comparative example 2 differs from example 1 in that: the micropore structure on the central suction and permeation area is not designed into a funnel shape with a wide upper part and a narrow lower part, but is designed into cylindrical micropores with the top diameter and the bottom diameter being equal.
The rest is the same as in example 1.
Comparative example 3
Comparative example 3 differs from example 1 in that: the central suction-infiltration area is not designed with a hemispherical concave point structure, and on the contrary, the hemispherical concave point structure is replaced with a hemispherical convex point structure.
The rest is 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 leakage-proof region.
The rest is the same as in example 1.
Comparative example 5
Comparative example 5 differs from example 1 in that: and the second protruding structure is not designed on the longitudinal drain preventing region.
The rest is 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 regions, but adopts the design of the whole central infiltration absorption region, and is not provided with a transverse leakage-proof region and a longitudinal leakage-proof region.
The rest is the same as in example 1.
Comparative example 7
Comparative example 7 differs from example 1 in that: the upper non-woven fabric is a single-parent non-woven fabric, and the lower non-woven fabric is a multi-parent non-woven fabric.
The rest is the same as in example 1.
Comparative example 8
Comparative example 8 differs from example 1 in that: the upper non-woven fabric and the lower non-woven fabric are spun-bonded non-woven fabrics.
The rest is the same as in example 1.
Comparative example 9
Comparative example 9 differs from example 1 in that: in the central imbibition zone, the diameter of the hemispherical pit structure is 6mm, and the density is 3 per 100mm2The 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 mm2。
The rest is the same as in example 1.
Comparative example 10
Comparative example 10 differs from example 1 in that: in the transverse leakage-proof area, the diameter of the first protruding structure is 3.5mm, and the distance between the vertical stripes is 3.5 mm; in the longitudinal leakage-proof area, the diameter of the second protruding structure is 3.5mm, and the distance between the vertical stripes is 3.5 mm.
The rest is 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 drawing speed of the non-woven fabric body is 65 m/min.
The rest is the same as in example 1.
Evaluation of Effect
The nonwoven fabrics of examples 1 to 4 and comparative examples 1 to 11 were subjected to the permeation time, the rewet amount, and the overflow amount tests, respectively. The test methods are described below, and the test results are shown in table 1 below.
Reference is made to GB/T24218.2010 textile-nonwoven test method-part 8 for the first, second and third liquid penetration time test methods: determination of liquid penetration time (simulated urine). Rewet test methods reference GB/T24218.2010 textile-nonwoven test method-part 14: and (4) measuring the moisture return amount of the cladding material. The transverse overflow amount and longitudinal overflow amount test method refers to GB/T24218.2010 textile-non-woven fabric test method-part 11: and (4) measuring the overflow amount.
TABLE 1 TABLE of results of nonwoven fabric Performance test of examples 1-4 and comparative examples 1-11
From the records in Table 1, it can be seen that the liquid infiltration rates are significantly faster and the amount of rewet is lower for the examples compared to the comparative examples based on the data for the 1 st to 3 rd liquid penetration times and the amount of rewet. The funnel-shaped micropore structure and the concave point structure contained in the central suction and permeation area are reasonable in design, so that the non-woven fabric is favorable for rapidly transmitting liquid to the lower layer, the amount of liquid remaining 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 perforated design is wide at the top and narrow at the bottom, and the liquid is difficult to return to the surface after infiltration, so the infiltration amount is lower and the liquid is drier.
As can be seen from the overflow amounts of the comparative examples and comparative examples, almost no liquid overflows in the examples, regardless of the amount of the lateral overflow or the amount of the longitudinal overflow. This demonstrates that the convex structure included in the lateral and longitudinal leakage preventing regions according to the embodiment of the present invention is effective in preventing liquid from leaking out.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. The hydrophilic non-woven fabric for the sanitary products is characterized by comprising a non-woven fabric body, wherein a central suction and permeation area is arranged in the middle area of the non-woven fabric body, transverse leakage-proof areas are arranged on the upper side and the lower side of the central suction and permeation area, and longitudinal leakage-proof areas are arranged on the left side and the right side of the central suction and permeation area; the central seepage suction 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 up, down, left and right is marked as an infiltration area, and funnel-shaped micropores are arranged on the infiltration area; first protruding structures arranged in an array mode are arranged on the transverse leakage-proof area; and second protruding structures arranged in an array manner are arranged on the longitudinal leakage-proof area.
2. The hydrophilic nonwoven fabric for sanitary goods as claimed in claim 1, wherein the pit structure is a hemispherical pit; the diameter of the top of the funnel-shaped micropores is larger than that of the bottom.
3. The hydrophilic nonwoven fabric for sanitary goods as claimed in claim 2, wherein the diameter of the hemispherical depressions is 3 to 5mm, and the density is 5 to 8 depressions/100 mm2(ii) a The diameter of the top of the funnel-shaped micropores is 1.0-1.5 mm, the diameter of the bottom of the funnel-shaped micropores is 0.5-1.0 mm, the height of the funnel-shaped micropores is 0.25-0.50 mm, and the density of the funnel-shaped micropores is 3-5 per 100mm2。
4. The hydrophilic nonwoven fabric for sanitary products as claimed in claim 1, wherein the first protrusion structures are cylindrical protrusions or rectangular protrusions, the width of the top of each first protrusion structure is 1.5-3.0 mm, and the distance between two adjacent first protrusion structures is 1-3 mm.
5. The hydrophilic nonwoven fabric for sanitary products as claimed in claim 1, wherein the second protrusion structures are cylindrical protrusions or rectangular protrusions, the width of the top of each second protrusion structure is 1.5-3.0 mm, and the distance between two adjacent second protrusion structures is 1-3 mm.
6. The hydrophilic nonwoven fabric for hygienic products as claimed in claim 1, wherein the nonwoven fabric body comprises an upper layer nonwoven fabric and a lower layer nonwoven fabric which are combined into a whole, the upper layer nonwoven fabric is a weak hydrophilic fiber nonwoven fabric, and the lower layer nonwoven fabric is a single hydrophilic fiber nonwoven fabric.
7. The hydrophilic nonwoven fabric for sanitary goods as claimed in claim 6, wherein the upper layer nonwoven fabric has a grammage of 15 to 25 g per square meter and a thickness of 0.40 to 0.65 mm; the gram weight of the lower non-woven fabric is 15-25 grams per square meter, and the thickness of the lower non-woven fabric is 0.30-0.50 mm.
8. The hydrophilic nonwoven fabric for sanitary products as set forth in claim 1, wherein the central suction-infiltration region has a length of 80 to 400mm and a width of 80 to 120 mm; the length of the transverse leakage-proof area is 80-400 mm, the width of the transverse leakage-proof area is 35-50 mm, the length of the longitudinal leakage-proof area is 30-190 mm, and the width of the longitudinal leakage-proof area is 150-220 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022869586.9U CN215689086U (en) | 2020-12-03 | 2020-12-03 | Hydrophilic non-woven fabric for hygienic products |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022869586.9U CN215689086U (en) | 2020-12-03 | 2020-12-03 | Hydrophilic non-woven fabric for hygienic products |
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| Publication Number | Publication Date |
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| CN215689086U true CN215689086U (en) | 2022-02-01 |
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| CN202022869586.9U Active CN215689086U (en) | 2020-12-03 | 2020-12-03 | Hydrophilic non-woven fabric for hygienic products |
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