CN116163068A - Water-jet nonwoven material with unidirectional moisture-guiding function and preparation method thereof - Google Patents
Water-jet nonwoven material with unidirectional moisture-guiding function and preparation method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
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- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/10—Bamboo
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- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/021—Moisture-responsive characteristics hydrophobic
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/022—Moisture-responsive characteristics hydrophylic
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
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- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
- D10B2509/02—Bandages, dressings or absorbent pads
- D10B2509/026—Absorbent pads; Tampons; Laundry; Towels
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a hydro-entangled non-woven material with a unidirectional moisture guiding function and a preparation method thereof, and the hydro-entangled non-woven material comprises a front hydrophobic layer and a back hydrophilic layer, wherein the hydrophobic layer is a polylactic acid fiber layer, the hydrophilic layer is a bamboo fiber layer or viscose fiber, and the hydrophobic layer and the hydrophilic layer are overlapped and paved and hydro-entangled to obtain the unidirectional moisture guiding hydro-entangled non-woven fabric, and the preparation method comprises the following steps: 1) Cotton preparation: the bamboo fiber or the viscose fiber and the polylactic acid fiber are independently cotton blended; 2) Pre-opening the fiber: 3) Forming an overlapped web comprising a hydrophilic layer web and a hydrophobic layer web; 4) Compounding by water needling; 5) Drying; 6) And (5) cutting and packaging. The invention ensures the bacteriostasis and skin-friendly performance of the sanitary towel thin layer, and simultaneously realizes the liquid absorption gradient by utilizing the characteristics of the upper layer of the material, namely the water repellency and the water hydrophilicity of the lower layer of the material, thereby effectively improving the infiltration rate of the liquid; meanwhile, the polylactic acid fiber has small water repellent layer ratio, light weight, softness, small liquid reverse osmosis amount, improved surface comfort and dryness, more uniform fiber distribution and improved liquid permeability.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics and preparation, in particular to a spunlaced non-woven material with a single moisture-conducting function and a preparation method thereof. The invention can be used as the surface layer of disposable sanitary products such as sanitary napkins, paper diapers and the like.
Background
The surface layer of the common sanitary towel has poor water locking property, is easy to reverse osmosis, and can weaken skin barrier after contacting with skin for a long time, thereby causing bacterial infection. In order to ensure that the surface of the product is dry and the liquid can be kept inside after absorbing the liquid, the reverse osmosis amount is reduced, and the most common solution is to require the product to have an absorption gradient close to zero from the surface and the maximum of the core layer, so that unidirectional water guiding capability is realized. This gradient can be achieved by means of multilayer compounding and coating finishing. In consideration of the difference of individual skin sensitivity, the allergic condition in the using process is reduced, and the multilayer composite surface layer material is the first choice.
Among various fiber materials, polylactic acid fibers are used as materials with the characteristics of natural fibers and synthetic fibers, and have the characteristics of ultraviolet resistance, wicking moisture conductivity, skin-friendly antibacterial property, biodegradability and the like; the disposable sanitary health material prepared with polylactic acid has skin-friendly, breathable, dry and comfortable and antibacterial properties.
The bamboo fiber has mild total chemical action in the production process, retains more natural components such as hemicellulose and lignin in bamboo raw materials, particularly special substances (such as bamboo quinone and chlorophyll) in bamboo, so that the bamboo fiber has good air permeability, water absorbability, strong wear resistance, good dyeing property, natural antibacterial, bacteriostatic, deodorant and ultraviolet resistance functions. The bamboo fiber has thick and long form and loose structure, and the existing cavities and pores can generate certain capillary action to promote liquid transmission.
The patent application number CN201921614354.X designs a sanitary towel with rapid infiltration, adopts the nascent bamboo fiber which is secondarily stretched, so that menstrual blood can not diffuse in the surface layer, but directly infiltrate into the water absorption layer from the orderly arranged cross section, and the dry and comfortable area of the surface layer of the sanitary towel is ensured to be increased. The technical scheme of the patent has the following problems: the bamboo fiber is specially treated, a certain molecular orientation degree is obtained by adopting a stretching technology in the manufacturing process, uniformity and consistency are not easy to ensure, the upper and lower hydrophobic layers are not obvious, and a uniform dry effect is difficult to achieve.
The patent application number CN201911310834.1 is a non-woven fabric material on the surface layer of the sanitary towel for sports, which is obtained by mixing the polylactic acid material with the ES material or the bamboo charcoal material after opening the polylactic acid material, and then carding, thermal bonding and net forming the polylactic acid material again. The patent is a non-woven fabric material on the surface layer of the sanitary towel for sports, which is prepared by mixing bamboo fibers and polylactic acid fibers and adopting a thermal bonding process, and does not relate to a hydroentangling process and a compounding method of different single fiber raw material fiber webs. The technical scheme of the patent has the following problems: the polylactic acid fiber and the ES fiber have low melting points, the nonwoven fabric processed by adopting the thermal bonding process has low skin comfort, and the ES chemical fiber has certain sensitization and is not degradable.
The patent application number CN114214784 designs a bamboo fiber corn fiber bi-component non-woven fabric, which is characterized in that the mass ratio of the bamboo fiber to the corn fiber is 1:9, processing the mixed fiber slices by a complexing cross-linking agent, a foaming agent and the like to obtain a spinning mixed solution, preparing the bi-component composite fiber by a dry-jet wet spinning process, and preparing the bi-component water-jet non-woven fabric of the bamboo fiber corn fiber by a water jet process. The invention adopts the bi-component composite fiber to prepare the spunlaced non-woven fabric, and the raw materials and the characteristics of the upper layer fiber and the lower layer fiber are consistent, which is different from the principle that the two fibers used in the invention are singly meshed and then are composited. The technical scheme of the patent has the following problems: the non-woven fabric processed by the same water thorn has thicker hydrophobic layer, relatively large reverse osmosis quantity and insufficient dry comfort.
In summary, no related patent relates to a process for producing a unidirectional moisture-conducting spunlaced nonwoven material with an upper layer and a lower layer respectively composited by polylactic acid cotton web and bamboo fiber cotton web.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the spunlaced nonwoven material with a unidirectional moisture-guiding function. The invention ensures the bacteriostasis and skin-friendly performance of the sanitary towel thin layer, and simultaneously realizes the liquid absorption gradient by utilizing the characteristics of the upper layer of the material, namely the water repellency and the water hydrophilicity of the lower layer of the material, thereby effectively improving the infiltration rate of the liquid; meanwhile, the polylactic acid fiber has small water repellent layer ratio, light weight, softness, small liquid reverse osmosis amount, improved surface comfort and dryness, more uniform fiber distribution and improved liquid permeability.
The invention also provides a preparation method of the spunlaced nonwoven material with the unidirectional moisture-guiding function.
The invention ensures the bacteriostasis and skin-friendly performance of the sanitary towel thin layer, and simultaneously realizes the liquid absorption gradient by utilizing the characteristics of the upper layer of the material, namely the water repellency and the water hydrophilicity of the lower layer of the material, thereby effectively improving the infiltration rate of the liquid; meanwhile, the hydrophobicity of the polylactic acid fiber ensures that liquid is not easy to permeate back, and the dryness of the surface layer is improved. Compared with the prior art of bamboo fiber-corn fiber mixed carding technology, the fiber distribution is more uniform, and the liquid permeability is improved.
The technical scheme adopted for solving the technical problems is as follows:
the hydro-entangled non-woven material with the single moisture-conducting function comprises a hydrophobic layer on the front side and a hydrophilic layer on the back side, wherein the hydrophobic layer is a polylactic acid fiber layer, the hydrophilic layer is a bamboo fiber layer or viscose fiber, and the hydrophobic layer and the hydrophilic layer are overlapped and paved and hydro-entangled to obtain the single moisture-conducting hydro-entangled non-woven fabric.
The preparation method of the water-jet nonwoven material with the single moisture-guiding function comprises a hydrophobic layer on the front side and a hydrophilic layer on the back side, wherein the hydrophobic layer is a polylactic acid fiber layer made of polylactic acid fiber materials, and the hydrophilic layer is a bamboo fiber layer made of bamboo fibers or a viscose fiber layer made of viscose fibers, and the preparation method comprises the following steps:
1) Cotton preparation: the bamboo fiber or the viscose fiber and the polylactic acid fiber are independently cotton blended;
2) Pre-opening the fiber:
respectively grabbing bamboo fibers or viscose fibers and polylactic acid fibers, conveying the bamboo fibers or the viscose fibers and the polylactic acid fibers to two multi-bin cotton mixers through branch pipelines, firstly grabbing a certain amount of bamboo fibers or viscose fibers by the cotton grabbing machine, and conveying the bamboo fibers or the viscose fibers to corresponding first opening mixing equipment; then, after the bamboo fiber or the viscose fiber in the bale plucker is fed, grabbing a certain amount of polylactic acid fiber, and sending the polylactic acid fiber to a second opening mixing device;
3) Forming an overlapped web comprising a hydrophilic layer web and a hydrophobic layer web
The bamboo fiber or the viscose fiber after the opening and mixing is conveyed into a first carding machine, and is carded and parallel-laid by a double doffer carding device, and the output is a hydrophilic layer fiber web of the spunlaced non-woven fabric; the polylactic acid fibers after the opening and mixing are sent to a second carding machine, carding and parallel lapping are carried out through double doffer equipment, and the output is a water-jet nonwoven hydrophobic layer fiber web; the hydrophilic layer fiber web and the hydrophobic layer fiber web are overlapped at the output curtain part of the second carding machine to obtain overlapped fiber webs with different upper and lower layers of characteristics;
4) Water jet-needling composite
5) Drying
6) Slitting package
Slitting and winding are carried out on a slitting machine according to the required specification.
The gram weight proportion of the hydrophobic layer fiber web in the step 3) is 30-40%, and the gram weight proportion of the hydrophilic layer fiber web is 60-70%.
The overlapped fiber web in the step 4) is subjected to forward and reverse puncture entanglement through seven hydroentangled heads, wherein five hydroentangled fibers are adopted on the front side and two hydroentangled fibers are adopted on the back side, so that a hydroentangled non-woven fabric with a single moisture guiding function is prepared;
and 5) the spun-laced non-woven fabric with the single moisture guiding function after the spun-laced non-woven fabric is subjected to the circular screen hot air penetrating dryer, so that the moisture remained in the spun-laced non-woven material is rapidly discharged.
And 6) slitting and winding the steel wire on a slitting machine according to the required specification.
The beneficial effects of the invention are as follows:
1. the water-jet nonwoven material with the single moisture-conducting function has the advantages that the water-repellent layer of the polylactic acid fiber is small in occupied ratio, light, thin and soft, the water-repellent layer of the polylactic acid fiber is capable of conducting water rapidly, the liquid rewet amount is small, the comfortable and dry properties of the surface layer are improved, the skin is in a dry environment, the antibacterial properties of the polylactic acid fiber and the bamboo fiber can be utilized to effectively reduce bacteria breeding and peculiar smell, the comfort is high, the use feeling is improved, and the water-jet nonwoven material is particularly suitable for the surface layer of disposable sanitary products such as sanitary napkins and paper diapers.
2. The invention utilizes the hydrophobic and water-guiding characteristics of the hydrophobic polylactic acid fiber and the water absorption of the bamboo fiber, the hydrophobic property of the polylactic acid fiber ensures that the liquid is not easy to permeate back, a unidirectional water guide channel from top to bottom is formed, the invention has the advantages of fast liquid absorption rate, small reverse osmosis, improved surface dryness, and surface dryness, can be used for the surface layers of sanitary napkins and paper diapers, can effectively maintain good use environment, and reduces the risk of skin complications.
3. The invention ensures the bacteriostasis and skin-friendly performance of the sanitary towel thin layer, and simultaneously realizes the liquid absorption gradient by utilizing the characteristics of the upper layer of the material, namely hydrophobic property and the lower layer of the material, thereby effectively improving the liquid infiltration rate and having good dryness and comfort.
4. Compared with the prior art of bamboo fiber-corn fiber mixed carding technology, the fiber distribution is more uniform, the consistency is good, the liquid permeability is improved, and the dry and comfortable effect is good.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of a unidirectional moisture-conductive spunlaced nonwoven fabric of the present invention;
FIG. 2 is a schematic diagram showing the positional relationship between the water repellent layer and the hydrophilic layer according to the present invention.
In the figure, a hydrophobic layer 1, a hydrophilic layer on the back side 2 and a hydroentangled layer 3 are compounded to obtain the unidirectional wet-guiding hydroentangled non-woven fabric.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1 and fig. 2, the hydroentangled non-woven material with the single moisture-guiding function comprises a hydrophobic layer 1 on the front side and a hydrophilic layer 2 on the back side, wherein the hydrophobic layer is a polylactic acid fiber layer, the hydrophilic layer is a bamboo fiber layer or viscose fiber, and the hydrophobic layer and the hydrophilic layer are overlapped and paved and subjected to hydroentanglement compounding to obtain the single moisture-guiding non-woven fabric 3, namely the hydroentangled non-woven material with the single moisture-guiding function.
Example 2
The preparation method of the water-jet nonwoven material with the single moisture-guiding function comprises the steps that the one-way moisture-guiding water-jet nonwoven material comprises a front hydrophobic layer and a back hydrophilic layer, wherein the hydrophobic layer is a polylactic acid fiber layer made of polylactic acid fiber materials, and the hydrophilic layer is a bamboo fiber layer made of bamboo fibers, and the preparation method comprises the following steps: 1) Cotton preparation: cotton is independently mixed with bamboo fiber and polylactic acid fiber;
2) Pre-opening the fiber:
respectively grabbing bamboo fibers and polylactic acid fibers, conveying the bamboo fibers and the polylactic acid fibers to two multi-bin cotton mixers through branch pipelines, firstly grabbing a certain amount of bamboo fibers by the cotton grabbing machine, and conveying the bamboo fibers to corresponding first opening mixing equipment; then, after the bamboo fibers in the bale plucker are fed, grabbing a certain amount of polylactic acid fibers, and conveying the polylactic acid fibers to a second opening mixing device;
3) Forming a hydrophilic layer web and a hydrophobic layer web
The bamboo fibers after the opening and mixing are conveyed into a first carding machine, carding and parallel lapping are carried out through a double doffer carding device, and the output is a hydrophilic layer fiber web of spunlaced non-woven fabric; the polylactic acid fibers after the opening and mixing are sent to a second carding machine, carding and parallel lapping are carried out through double doffer equipment, and the output is a water-jet nonwoven hydrophobic layer fiber web; the hydrophilic layer fiber web and the hydrophobic layer fiber web are overlapped at the output curtain part of the second carding machine to obtain overlapped fiber webs with different upper and lower layers of characteristics;
wherein, in the overlapped fiber web, the gram weight proportion of the fiber web of the hydrophobic layer is 30-40%, and the gram weight proportion of the fiber web of the hydrophilic layer is 60-70%.
4) Water jet-needling composite
Overlapping and laying the prepared hydrophobic layer fiber web and the hydrophilic layer fiber web, and carrying out forward and reverse puncture entanglement by seven times of hydroentanglement heads, wherein five times of hydroentanglement are carried out on the front side and two times of hydroentanglement are carried out on the back side, so as to prepare the hydroentangled non-woven fabric with a single moisture guiding function;
5) Drying
The water-jet nonwoven fabric with the single moisture guiding function after water jet is subjected to the rotary screen hot air penetrating dryer, so that the water remained in the water-jet nonwoven material is rapidly discharged;
6) Slitting package
Slitting and winding are carried out on a slitting machine according to the required specification.
Example 3
The unidirectional wet-guiding spun-laced non-woven fabric comprises a hydrophobic layer on the front surface and a hydrophilic layer on the back surface, wherein the hydrophobic layer is a polylactic acid fiber layer made of polylactic acid fiber materials, the hydrophilic layer is a viscose fiber layer made of viscose fibers, and other reference examples 2 are omitted herein.
Compared with the prior art, the invention realizes the liquid absorption gradient by utilizing the hydrophilic characteristic of the upper hydrophobic layer and the lower hydrophobic layer of the material while ensuring the bacteriostasis and skin-friendly performance of the thin layer of the sanitary towel, and effectively improves the infiltration rate of liquid; meanwhile, the hydrophobicity of the polylactic acid fiber ensures that liquid is not easy to permeate back, and the dryness of the surface layer is improved. Compared with the traditional bamboo fiber-corn fiber mixed carding process, the fiber distribution is more uniform, and the liquid permeability is improved.
The foregoing has been described in what is considered to be the preferred embodiments of the invention, and the description of specific examples is only intended to provide a better understanding of the principles of the invention. It will be apparent to those skilled in the art that modifications and equivalents may be made in accordance with the principles of the invention, and such modifications and equivalents are considered to fall within the scope of the invention.
Claims (6)
1. The hydro-entangled non-woven material with the single moisture-conducting function comprises a hydrophobic layer on the front side and a hydrophilic layer on the back side, and is characterized in that the hydrophobic layer is a polylactic acid fiber layer, the hydrophilic layer is a bamboo fiber layer or viscose fiber, and the hydrophobic layer and the hydrophilic layer are overlapped and laid and hydro-entangled to form the unidirectional moisture-conducting hydro-entangled non-woven fabric.
2. The preparation method of the water-jet nonwoven material with the single moisture-guiding function comprises a front hydrophobic layer and a back hydrophilic layer, and is characterized in that the hydrophobic layer is a polylactic acid fiber layer made of polylactic acid fiber materials, and the hydrophilic layer is a bamboo fiber layer made of bamboo fibers or a viscose fiber layer made of viscose fibers, and the preparation method comprises the following steps:
1) Cotton preparation: the bamboo fiber or the viscose fiber and the polylactic acid fiber are independently cotton blended;
2) Pre-opening the fiber:
respectively grabbing bamboo fibers or viscose fibers and polylactic acid fibers, conveying the bamboo fibers or the viscose fibers and the polylactic acid fibers to two multi-bin cotton mixers through branch pipelines, firstly grabbing a certain amount of bamboo fibers or viscose fibers by the cotton grabbing machine, and conveying the bamboo fibers or the viscose fibers to corresponding first opening mixing equipment; then, after the bamboo fiber or the viscose fiber in the bale plucker is fed, grabbing a certain amount of polylactic acid fiber, and sending the polylactic acid fiber to a second opening mixing device;
3) Forming an overlapped web comprising a hydrophilic layer web and a hydrophobic layer web
The bamboo fiber or the viscose fiber after the opening and mixing is conveyed into a first carding machine, and is carded and parallel-laid by a double doffer carding device, and the output is a hydrophilic layer fiber web of the spunlaced non-woven fabric; the polylactic acid fibers after the opening and mixing are sent to a second carding machine, carding and parallel lapping are carried out through double doffer equipment, and the output is a water-jet nonwoven hydrophobic layer fiber web; the hydrophilic layer fiber web and the hydrophobic layer fiber web are overlapped at the output curtain part of the second carding machine to obtain overlapped fiber webs with different upper and lower layers of characteristics;
4) Compounding by water needling;
5) Drying;
6) And (5) cutting and packaging.
3. The method of producing a hydroentangled nonwoven material with single moisture transfer function according to claim 2, wherein the grammage of the web of the hydrophobic layer in the step 3) is 30% to 40% and the grammage of the web of the hydrophilic layer is 60% to 70%.
4. The method for preparing a spunlaced nonwoven material with single moisture-conducting function according to claim 2, wherein the overlapped fiber web in the step 4) is entangled by forward and backward puncture of seven spunlaced heads, wherein the front five spunlaces and the back two spunlaces are respectively performed to prepare the spunlaced nonwoven fabric with single moisture-conducting function.
5. The method for preparing a spun-laced nonwoven material with single moisture-conducting function according to claim 2, wherein the step 5) is characterized in that the spun-laced nonwoven material with single moisture-conducting function after being spun-laced is passed through a cylinder mould hot air penetrating dryer to rapidly discharge the moisture remained in the spun-laced nonwoven material.
6. The method of producing a hydroentangled nonwoven material with single moisture transfer as defined in claim 2, wherein said step 6) is slit and wound on a slitting machine according to a desired specification.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310336969.5A CN116163068A (en) | 2023-03-31 | 2023-03-31 | Water-jet nonwoven material with unidirectional moisture-guiding function and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310336969.5A CN116163068A (en) | 2023-03-31 | 2023-03-31 | Water-jet nonwoven material with unidirectional moisture-guiding function and preparation method thereof |
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