CN212451867U - Soft and smooth non-woven fabric - Google Patents
Soft and smooth non-woven fabric Download PDFInfo
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- CN212451867U CN212451867U CN201921993338.6U CN201921993338U CN212451867U CN 212451867 U CN212451867 U CN 212451867U CN 201921993338 U CN201921993338 U CN 201921993338U CN 212451867 U CN212451867 U CN 212451867U
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Abstract
The utility model relates to a soft smooth non-woven fabrics, soft smooth non-woven fabrics includes the soft top layer of nanofiber, the soft intermediate level of nanofiber and the soft bottom of nanofiber that overlap in proper order. The utility model relates to a non-woven fabrics is including the different nanofiber soft layer of three-layer physical properties of range upon range of setting, and the soft degree in top layer is lower, nevertheless feels smooth, and two-layer soft degree greatly increased down plays cotton gentle effect, range upon range of into cotton soft smooth non-woven fabrics, and this non-woven fabrics still has excellent intensity and elongation.
Description
Technical Field
The utility model belongs to the technical field of medical health care supplies, concretely relates to soft smooth non-woven fabrics.
Background
The non-woven fabric is a fabric formed without spinning woven fabric, and is formed by performing directional spinning or irregular melt-blown arrangement on short fibers or filaments formed by modifying a polypropylene material to form a composite fiber web structure, and then reinforcing the composite fiber web structure by adopting methods such as mechanical hot rolling, spun-bonding or chemical method. Compared with the traditional process, the method has the characteristics of short process flow, stable quality, high production speed, high yield, low cost, environmental protection, wide application and the like. Nonwoven fabrics are widely used in medical and sanitary fabrics, decorative fabrics, military fabrics, automotive fabrics, and the like. However, the current nonwoven fabric can not meet some special requirements in terms of softness and smoothness, and particularly, the medical and sanitary cloth, such as a sanitary towel, can cause discomfort to human bodies.
CN208841980U discloses a melt-blown composite water-absorbing sanitary nonwoven fabric, which is a three-layer structure, wherein the upper layer and the lower layer are hydrophilic melt-blown layers with good hygroscopicity and soft hand feeling, and the middle layer is an SAP resin layer with super-strong water absorbability. The product has excellent water absorption performance due to the addition of the SAP resin layer, the water absorption performance of the composite product is increased due to the hydrophilic melt-blown layer, the hand feeling of the composite product is increased, the three layers of materials are compounded through a hot rolling process, and the product has the advantages of good water absorption performance, soft hand feeling, light weight and the like, and is an ideal core layer material of a sanitary product. Although the product has certain improvement on moisture absorption and softness, the improvement on softness is not very obvious, and the good softness, strength and extensibility of the product cannot be simultaneously met.
CN105369645A relates to a production process of antistatic polypropylene fiber non-woven fabric, which comprises 1) ingredients: the weight ratio is as follows: 92-96 parts of polypropylene, 2.5-5 parts of antistatic master batch, 1-2 parts of hydrophilic master batch and 0.5-1 part of soft master batch are uniformly mixed to prepare an antistatic polypropylene mixed raw material; 2) feeding and melting: and uniformly mixing the mixed raw materials, pouring the mixed raw materials into a feeding hopper, extruding the mixed raw materials by an extruder, and then feeding the mixed raw materials in the extruder into a screw extruder for melting operation and the like to obtain the polypropylene non-woven fabric with good antistatic property. The product does a certain work on softness, but the effect is not obvious.
CN208917450U discloses a CSCM composite non-woven fabric, which comprises a carded fiber web layer I, a spunbonded fiber web layer, a carded fiber web layer II and a superfine melt-blown layer, so as to form a four-layer composite non-woven fabric; the carding fiber net layer I and the carding fiber net layer II are used as supports of the composite material, so that the product has excellent water absorption performance and hand feeling, the strength of the composite product is increased by the aid of the spunbonded fiber net layer, the hand feeling and wiping effect of the composite product are increased by the aid of the superfine melt-blown layer, the four layers of materials are formed by being compounded through a spunlace process, the product has the advantages of being soft in hand feeling, good in wiping effect and the like, and the product is an ideal infant wet tissue and wiping product.
In conclusion, no product which is soft and smooth and has excellent strength and extensibility exists in the prior art.
SUMMERY OF THE UTILITY MODEL
To the deficiency of the prior art, the utility model aims to provide a soft and smooth non-woven fabric.
In order to achieve the purpose of the utility model, the utility model adopts the following technical proposal:
the utility model provides a soft smooth non-woven fabrics, soft smooth non-woven fabrics includes the soft top layer of nanofiber, the soft intermediate level of nanofiber and the soft bottom of nanofiber that overlap in proper order.
The utility model relates to a non-woven fabrics is including the different nanofiber soft layer of three-layer physical properties of range upon range of setting, and the soft degree in top layer is lower, nevertheless feels smooth, and two-layer soft degree greatly increased plays cotton gentle effect down, and range upon range of soft smooth non-woven fabrics of cotton. And the nonwoven fabric also has excellent strength and extensibility.
Preferably, the nanofiber soft surface layer is a mixed material layer of polypropylene and soft master batches.
Preferably, the nanofiber soft middle layer is a mixed material layer of polypropylene, soft master batches and nano elastomers.
Preferably, the nanofiber soft bottom layer is a mixed material layer of polypropylene, soft master batch and nano elastomer.
As above, the utility model discloses a non-woven fabrics is including the different nanofiber soft layer of three-layer physical properties of range upon range of setting, and preparation raw material type or quality ratio on each layer are all inequality, and the three-layer is mutually supported, plays soft smooth effect jointly, and can guarantee simultaneously that non-woven fabrics has excellent intensity and ductility.
Preferably, the thickness of the soft and smooth nonwoven is 0.10-0.16nm, such as 0.10nm, 0.11nm, 0.12nm, 0.13nm, 0.14nm, 0.15nm or 0.16nm, etc., preferably 0.12-0.14 nm.
Preferably, the thickness ratio of the nanofiber soft surface layer, the nanofiber soft middle layer and the nanofiber soft bottom layer is 1 (3-5) to (2-3), such as 1:3:2, 1:3:3, 1:4:2, 1:4:3, 1:5:2 or 1:5:3, preferably 1:4: 2.
The utility model relates to a whole thickness of non-woven fabric and the thickness of each fibrous layer all are the key factor that influences the product performance, and when the whole thickness of non-woven fabric was in above-mentioned numerical range and the thickness of three-layer was in above-mentioned proportion within range, enable the product and obtain better intensity, elongation and compliance.
In the present invention, the melt flow rate of the polypropylene is 2-6g/10min, such as 2g/10min, 3g/10min, 4g/10min, 5g/10min or 6g/10 min.
The utility model discloses in, the soft master batch includes by mass percent as follows preparation raw materials: 80-90% of polypropylene, 3-8% of cationic softener and 5-15% of auxiliary agent.
The soft master batch is a key factor influencing the smoothness degree of the non-woven fabric product, when the soft master batch is applied by the raw material formula, the smoothness degree of the polypropylene fiber can be obviously improved, and meanwhile, the soft master batch can be well matched with the nano elastomer, so that the product has good comprehensive properties in the aspects of softness, strength, extensibility and the like.
The polypropylene may be 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90% or the like by mass. Other specific values within the range are not described in detail herein.
The mass percentage of the cationic softener can be 3%, 4%, 5%, 6%, 7%, 8% or the like. Other specific values within the range are not described in detail herein.
The mass percentage of the auxiliary agent can be 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14% or 15% and the like. Other specific values within the range are not described in detail herein.
The utility model discloses in, the preparation method of soft master batch does: firstly, mixing polypropylene and a cationic softening agent for 10-20min (such as 10min, 12min, 14min, 16min, 18min or 20 min), and then mixing the mixture and an auxiliary agent for 10-20min (such as 10min, 12min, 14min, 16min, 18min or 20 min) to obtain the softening master batch.
The utility model relates to a soft master batch has its specific preparation method, and the soft master batch that makes according to above-mentioned step is applied to the utility model discloses non-woven fabric could obtain above-mentioned beneficial effect.
Preferably, the cationic softening agent comprises any one of or a combination of at least two of monoalkyl dimethyl tertiary amine, dialkyl methyl tertiary amine, trialkyl methyl tertiary amine or dioctadecyl dimethyl ammonium chloride; combinations of the at least two are exemplified by a combination of monoalkyl bis-methyl tertiary amine and dialkyl methyl tertiary amine, a combination of dialkyl methyl tertiary amine and trialkyl methyl tertiary amine, and the like.
Preferably, the adjuvant comprises stearic acid, paraffin wax and an emulsifier.
Preferably, the nanoelastomers comprise ethylene-octene copolymers, which are polyolefin thermoplastic elastomers synthesized using metallocene catalysts.
Preferably, the ethylene-octene copolymer has a number average molecular weight of 107-109Da, e.g. 107Da、5×107Da、108Da、5×108Da or 109Da, etc.
The nano elastomer is a key factor influencing the softness of a non-woven fabric product, and when the nano elastomer is applied by the raw materials, the softness of the polypropylene fiber can be remarkably improved, and meanwhile, the nano elastomer can be well matched with the soft master batch, so that the product has excellent comprehensive performance.
Preferably, the nanofiber soft surface layer is a mixed material layer of polypropylene and soft master batch in a mass ratio of (90-95): (5-10), that is, the mass ratio of polypropylene to soft master batch in the nanofiber soft surface layer is (90-95): (5-10), for example, 90:10, 91:9, 92:8, 93:7, 94:6 or 5: 5. Other specific values within the range are not described in detail herein.
Preferably, the nanofiber soft middle layer is a mixed material layer of polypropylene, soft master batch and nano elastomer in a mass ratio of (70-80) - (5-10) - (15-20), that is, the mass ratio of the polypropylene, the soft master batch and the nano elastomer in the nanofiber soft middle layer is (70-80) - (5-10) - (15-20), such as 80:5:15, 79:5:16, 78:6:16, 77:8:15, 76:9:15, 75:10:15, 74:10:16, 73:10:17, 72:10:18 or 70:10: 20. Other specific values within the range are not described in detail herein.
Preferably, the nanofiber soft bottom layer is a mixed material layer of polypropylene, soft master batch and nano elastomer in a mass ratio of (60-70) - (15-20), namely the mass ratio of the polypropylene, the soft master batch and the nano elastomer in the nanofiber soft bottom layer is (60-70) - (15-20), such as 70:15:15, 69:15:16, 68:16:16, 67:16:17, 66:17:17, 65:17:18, 64:18:18, 63:18:19, 62:19:19 or 60:20: 20. Other specific values within the range are not described in detail herein.
As before, the utility model relates to a non-woven fabrics is including the different nanofiber soft layer of three-layer physical properties of range upon range of setting, and the soft degree in top layer is lower, nevertheless feels smooth, and lower two-layer softness degree greatly increased plays cotton gentle effect, and range upon range of non-woven fabrics that becomes cotton soft smooth, high strength, high extensibility, and such excellent comprehensive properties need cooperate with different modes through each fibrous layer raw materials.
In the present invention, the preparation method of the soft and smooth non-woven fabric may be:
(1) respectively mixing and stirring the raw materials in each nanofiber soft layer according to the mass ratio to obtain three mixtures;
(2) carrying out hole-passing wire extrusion on the three mixtures obtained in the step (1) through a screw extruder respectively to obtain a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer respectively;
(3) and (3) carrying out hot rolling compounding on the nano fiber soft surface layer, the nano fiber soft middle layer and the nano fiber soft bottom layer obtained in the step (2) to obtain the soft and smooth non-woven fabric.
Specifically, the raw materials in each nanofiber soft layer are respectively mixed and stirred according to the mass ratio to obtain three mixtures; and then adjusting relevant process parameters (the temperature of the upper roller, the temperature of the lower roller, the temperature of a die head, the suction amount, the cold air speed and the like), heating, melting, plasticizing and mixing the mixture by a screw extruder, accurately metering the mixture by a metering pump, conveying the mixture to the die head, extruding filaments by passing through holes with uniform melt, cooling the filaments by cooling air, then feeding the filaments into a drafting device, sucking the filaments into the drafting device under the negative pressure action of the drafting device, and forming a cloth cover under the auxiliary action of a suction fan to obtain the nanofiber soft layer. And finally, carrying out hot rolling compounding on the three prepared nano fiber soft layers through two heated rollers to form the soft and smooth non-woven fabric.
Preferably, the die temperature of the screw extruder in the step (2) is 226-232 ℃, such as 226 ℃, 227 ℃, 228 ℃, 229 ℃, 230 ℃, 231 ℃ or 232 ℃ and the like. Other specific values within the range are not described in detail herein.
Preferably, the screw temperature of the screw extruder in the step (2) is 195-. Other specific values within the range are not described in detail herein.
Preferably, the upper roll temperature of the screw extruder in the step (2) is 153-157 ℃, such as 153 ℃, 154 ℃, 155 ℃, 156 ℃ or 157 ℃ and the like, and the lower roll temperature is 149-153 ℃, such as 149 ℃, 150 ℃, 151 ℃, 152 ℃ or 153 ℃ and the like. Other specific values within the range are not described in detail herein.
Preferably, the temperature of the screw extruder in step (2) is 220-. Other specific values within the range are not described in detail herein.
Preferably, the temperature of the small-pressure roller of the screw extruder in the step (2) is 100-. Other specific values within the range are not described in detail herein.
Preferably, when the soft nanofiber surface layer is prepared, the temperature of a small compression roller is 113-115 ℃; when the nanofiber soft middle layer is prepared, the temperature of the small press roll is 104-106 ℃; when the nano-fiber soft bottom layer is prepared, the temperature of the small press roll is 100-102 ℃.
Preferably, the pumping speed in the step (2) is 810-. Other specific values within the range are not described in detail herein.
Preferably, when the nanofiber soft surface layer is prepared, the pumping speed is 810 and 812 revolutions per minute; when the nanofiber soft middle layer is prepared, the pumping speed is 880-882 r/min; when the nano-fiber soft bottom layer is prepared, the pumping speed is 887-.
Preferably, the cold air speed during the via hole extrusion in step (2) is 800-. Other specific values within the range are not described in detail herein.
Preferably, when the soft nanofiber surface layer is prepared, the pumping speed is 800-; when the nano fiber soft middle layer is prepared, the suction speed is 868-871 revolutions/min; when the nanofiber soft bottom layer is prepared, the pumping speed is 878 and 880 revolutions per minute.
Preferably, the line speed of the mesh formation during the via hole extrusion in step (2) is 390-. Other specific values within the range are not described in detail herein.
Preferably, the linear speed of the rolling mill during the via-hole extrusion in step (2) is 395-405 m/min, such as 395 m/min, 396 m/min, 397 m/min, 398 m/min, 400 m/min or 405 m/min. Other specific values within the range are not described in detail herein.
Preferably, the winding linear speed during the via hole extrusion in step (2) is 405-415 m/min, such as 405 m/min, 407 m/min, 408 m/min, 410 m/min, 411 m/min, 412 m/min or 415 m/min. Other specific values within the range are not described in detail herein.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model relates to a non-woven fabrics is including the different nanofiber soft layer of three-layer physical properties of range upon range of setting, and the soft degree in top layer is lower, nevertheless feels smooth, and two-layer soft degree greatly increased down plays cotton gentle effect, range upon range of into cotton soft smooth non-woven fabrics, and this non-woven fabrics still has excellent intensity and elongation.
Drawings
FIG. 1 is a schematic structural view of a soft and smooth nonwoven fabric according to the present invention; wherein, 1 is a nano fiber soft surface layer, 2 is a nano fiber soft middle layer, and 3 is a nano fiber soft bottom layer.
Detailed Description
In order to further illustrate the technical means and effects of the present invention, the technical solution of the present invention will be further described below with reference to the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.
Example 1
The embodiment provides a soft and smooth non-woven fabric, which comprises a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer which are sequentially stacked. The nanofiber soft watchThe layer contains polypropylene and soft master batch with the mass ratio of 93: 7; the nano-fiber soft middle layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 77:8: 15; the nano-fiber soft bottom layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 70:15: 15. Wherein the nano elastomer is ethylene-octene copolymer (molecular weight 10)8Da); the melt flow rate of the polypropylene is 4g/10 min; the softening master batch comprises 85% of polypropylene (with a melt flow rate of 4g/10min), 5% of cationic softening agent (dodecyl dimethyl tertiary amine), 3% of stearic acid, 2% of paraffin and 5% of emulsifier (Tween 80) in percentage by mass. The thickness ratio of the nano-fiber soft surface layer to the nano-fiber soft middle layer to the nano-fiber soft bottom layer is 1:4:2, and the total thickness is 0.13 nm.
The preparation method comprises the following steps:
(1) respectively mixing and stirring the raw materials in each nanofiber soft layer according to the mass ratio to obtain three mixtures;
(2) carrying out hole-passing filament extrusion on the three obtained mixtures respectively through a screw extruder to respectively obtain a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer; the technological parameters of the through-hole wire extrusion are shown in table 1 (in the table, S1, S2 and S3 respectively represent the technological parameters for preparing the nanofiber soft surface layer, the nanofiber soft middle layer and the nanofiber soft bottom layer);
(3) and carrying out hot rolling compounding on the obtained nanofiber soft surface layer, the nanofiber soft middle layer and the nanofiber soft bottom layer to obtain the soft and smooth non-woven fabric.
TABLE 1
Example 2
The embodiment provides a soft and smooth non-woven fabric, which comprises a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer which are sequentially stacked. The nano-fiber soft surface layer contains polypropylene and soft master batch in a mass ratio of 90: 10; the nano-fiber soft middle layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 70:10: 20; the nano-fiber soft bottom layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 60:20: 20. Wherein the nano elastomer is ethylene-octene copolymer (molecular weight 10)8Da); the melt flow rate of the polypropylene is 3g/10 min; the softening master batch comprises 80 mass percent of polypropylene (with the melt flow rate of 3g/10min), 5 mass percent of cationic softening agent (didodecyl methyl tertiary amine), 5 mass percent of stearic acid, 5 mass percent of paraffin and 5 mass percent of emulsifier (span 80). The thickness ratio of the nano-fiber soft surface layer to the nano-fiber soft middle layer to the nano-fiber soft bottom layer is 1:3:2, and the total thickness is 0.12 nm.
The preparation process is as in example 1.
Example 3
The embodiment provides a soft and smooth non-woven fabric, which comprises a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer which are sequentially stacked. The soft surface layer of the nano-fiber contains polypropylene and soft master batch with the mass ratio of 95: 5; the nano-fiber soft middle layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 80:5: 15; the nano-fiber soft bottom layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 70:15: 15. Wherein the nano elastomer is ethylene-octene copolymer (molecular weight 10)8Da); the melt flow rate of the polypropylene is 5g/10 min; the softening master batch comprises 90% of polypropylene (with a melt flow rate of 5g/10min), 5% of cationic softening agent (didodecyl methyl tertiary amine), 1% of stearic acid, 1% of paraffin and 3% of emulsifier (span 80) in percentage by mass. The thickness ratio of the nano-fiber soft surface layer to the nano-fiber soft middle layer to the nano-fiber soft bottom layer1:5:3, and the total thickness is 0.14 nm.
The preparation process is as in example 1.
Example 4
The embodiment provides a soft and smooth non-woven fabric, which comprises a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer which are sequentially stacked. The nano-fiber soft surface layer contains polypropylene and soft master batch in a mass ratio of 92: 8; the nano-fiber soft middle layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 72:8: 20; the nanofiber soft bottom layer contains polypropylene, soft master batches and nano elastomers in a mass ratio of 66:14: 20. Wherein the nano elastomer is ethylene-octene copolymer (molecular weight 10)8Da); the melt flow rate of the polypropylene is 5g/10 min; the softening master batch comprises 90% of polypropylene (with a melt flow rate of 5g/10min), 5% of cationic softening agent (didodecyl methyl tertiary amine), 1% of stearic acid, 1% of paraffin and 3% of emulsifier (Tween 80) in percentage by mass. The thickness ratio of the nano-fiber soft surface layer to the nano-fiber soft middle layer to the nano-fiber soft bottom layer is 1:3:3, and the total thickness is 0.13 nm.
The preparation process is as in example 1.
Example 5
The embodiment provides a soft and smooth non-woven fabric, which comprises a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer which are sequentially stacked. The soft surface layer of the nano-fiber contains polypropylene and soft master batch with the mass ratio of 94: 6; the nanofiber soft middle layer contains polypropylene, soft master batches and nano elastomers in a mass ratio of 75:8: 17; the nano-fiber soft bottom layer contains polypropylene, soft master batch and nano-elastomer in a mass ratio of 65:17: 18. Wherein the nano elastomer is ethylene-octene copolymer (molecular weight 10)8Da); the melt flow rate of the polypropylene is 4g/10 min; the softening master batch comprises 90% of polypropylene (melt flow rate of 4g/10min), 5% of cationic softening agent (dodecyl dimethyl tertiary amine), 1% of stearic acid, 1% of paraffin and 3% of emulsifier (Tween 80) in percentage by mass. The nano-fiber soft surface layer, the nano-fiber soft middle layer and the nano-fiberThe thickness ratio of the soft bottom layer of the rice fiber is 1:4:3, and the total thickness is 0.13 nm.
The preparation process is as in example 1.
Example 6
The embodiment provides a soft and smooth non-woven fabric, which comprises a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer which are sequentially stacked. The structural composition of the non-woven fabric is different from that of the non-woven fabric in example 1 only in that the thickness ratio of the nanofiber soft surface layer to the nanofiber soft middle layer to the nanofiber soft bottom layer is 1:1:1, and the rest parts are consistent.
The preparation process is as in example 1.
Comparative example 1
The embodiment provides a soft and smooth non-woven fabric, which comprises a nanofiber soft surface layer and a nanofiber soft bottom layer which are sequentially overlapped. The structural composition of the nanofiber soft surface layer and the nanofiber soft bottom layer are consistent with those of embodiment 1, and other parameters are also consistent.
The preparation process is as in example 1.
Evaluation test:
the nonwoven fabric products prepared in examples 1 to 6 and comparative example 1 were respectively tested for their performance indexes by the following methods:
(1) gram weight: FZ/T60004-;
(2) strength: GB/T24218.3-2010;
(3) elongation: GB/T24218.3-2010;
(4) softness: GB/T8942-2002;
(5) thickness: FZ/T60004-;
(6) pH value: GB/T7573-2009.
The test results are shown in table 1:
TABLE 1
As can be seen from the data in Table 1: the soft and smooth non-woven fabric has excellent strength, extensibility and softness, and the three-layer nanofiber soft layer has better performance than the two-layer nanofiber soft layer; the thickness relationship of the three layers also affects the above properties of the product.
The applicant states that the present invention is illustrated by the above embodiments, but the present invention is not limited to the above embodiments, i.e. the present invention must not rely on the above embodiments to be implemented. It should be clear to those skilled in the art that any improvement of the present invention, to the equivalent replacement of each raw material of the present invention, the addition of auxiliary components, the selection of specific modes, etc., all fall within the protection scope and disclosure scope of the present invention.
The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
Claims (7)
1. The soft and smooth non-woven fabric is characterized by comprising a nanofiber soft surface layer, a nanofiber soft middle layer and a nanofiber soft bottom layer which are sequentially stacked.
2. The soft and smooth nonwoven fabric of claim 1, wherein the soft surface layer of nanofibers is a layer of a blend of polypropylene and soft matrix.
3. The soft and smooth nonwoven fabric of claim 1, wherein the nanofiber soft middle layer is a mixed material layer of polypropylene, soft masterbatch and nano elastomer.
4. The soft and smooth nonwoven fabric of claim 1, wherein the nanofiber soft base layer is a mixed material layer of polypropylene, soft masterbatch and nano elastomer.
5. The soft and smooth nonwoven fabric of claim 1, wherein the thickness of the soft and smooth nonwoven fabric is from 0.10nm to 0.16 nm.
6. The soft and smooth nonwoven fabric of claim 1, wherein the ratio of the thickness of the nanofiber soft surface layer, the nanofiber soft middle layer and the nanofiber soft bottom layer is 1 (3-5) to (2-3).
7. The soft and smooth nonwoven fabric of claim 1, wherein the thickness ratio of the nanofiber soft surface layer, the nanofiber soft middle layer and the nanofiber soft bottom layer is 1:4: 2.
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| CN110699860A (en) * | 2019-11-18 | 2020-01-17 | 江苏盛纺纳米材料科技股份有限公司 | Soft and smooth non-woven fabric and preparation method and application thereof |
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| CN110699860A (en) * | 2019-11-18 | 2020-01-17 | 江苏盛纺纳米材料科技股份有限公司 | Soft and smooth non-woven fabric and preparation method and application thereof |
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