CN109763260B - Composite cloth of superfine denier viscose fiber and lyocell fiber and preparation process thereof - Google Patents
Composite cloth of superfine denier viscose fiber and lyocell fiber and preparation process thereof Download PDFInfo
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Abstract
The invention relates to composite cloth of superfine denier viscose fibers and lyocell fibers, which is prepared from a reticular fiber layer and base cloth, wherein the mass ratio of the reticular fiber layer to the base cloth is 55:45, and the reticular fiber layer is formed by superfine denier viscose fiber slurry through a wet method; the base cloth is non-woven cloth made of lyocell fibers. The first step of processing the superfine viscose fiber into dry paper is changed to a wet papermaking process, so that the forming step is accelerated, and the formed superfine viscose fiber is uniform and flat. The combination of the spunlace composite process part enables the two main raw material parts to be fully combined and linked. The gram weight of the finished composite cloth prepared by the invention is 33-35g/m2The thickness of the yarn is 0.21-0.24 mm, the surface style is fine and compact, the cotton is soft and strong, the yarn is semitransparent after being soaked in water, and the yarn only shows the characteristics of the yarn, and meanwhile, the yarn has the performances of quick water absorption, good mildew and moth prevention effects, excellent air permeability and moisture absorption, good moisture retention, thick cotton texture and the like.
Description
Technical Field
The invention relates to a composite cloth of superfine denier viscose fiber and lyocell fiber, which has simple and feasible process, less energy consumption, low production cost, firm and smooth combination of fiber and base cloth, soft hand feeling, fine surface style and transparency after being soaked in water, and a preparation process thereof.
Background
The Viscose Viscose fiber is cellulose fiber obtained by taking wood as a raw material and extracting and re-molding fiber molecules from natural wood cellulose, has the moisture absorption meeting the physiological requirement of human skin, and has the characteristics of smoothness, coolness, ventilation, static resistance, ultraviolet resistance and the like. Has the nature of cotton and the quality of silk. Is a genuine plant fiber which is from nature and is superior to nature.
Viscose belongs to cellulose fiber. It is made up by using natural fibre (wood fibre, cotton linter) as raw material, through the processes of alkalization, ageing and sulfonation, etc., making soluble cellulose xanthate, then dissolving it in dilute alkali liquor to make viscose and making wet spinning. By adopting different raw materials and spinning processes, common viscose fibers, high wet modulus viscose fibers, high strength viscose fibers and the like can be obtained respectively. Common viscose fiber has common physical and mechanical properties and chemical properties, and is divided into cotton type, wool type and filament type, commonly called artificial cotton, artificial wool and rayon. The high wet modulus viscose fiber has higher polymerization degree, strength and wet modulus. The fiber can bear a load of 22.0cN per unit density in wet state, and has a wet elongation of not more than 15% and is mainly rich in strong fiber. The high-strength viscose fiber has higher strength and fatigue resistance.
Viscose fibers can be classified into general viscose fibers, high wet modulus viscose fibers, strong viscose fibers and modified viscose fibers. In the strong viscose fiber, the filaments with dry strength more than 30.0cN/tex are called strong filaments; super-strong yarns with the density of over 38.0 cN/tex; the yarn is called two super strong yarns with the yarn length exceeding 44.1 cN/tex; the yarn is called three super strong yarn with more than 48.5 cN/tex; those exceeding 53.0cN/tex are called four-super strong filaments. Among the high performance viscose fibers, the fibers with higher elastic modulus in wet state are called polynosic fibers, also called high wet modulus fibers, and china called rich fibers, called rich fibers for short. The fiber with the wet modulus between that of the common fiber and the polynosic fiber, but with higher hooking strength and smaller brittleness is called the improved high-wet-modulus fiber.
The breaking strength of the common viscose is smaller than that of cotton and is about 1.6-2.7 cN/dtex; the elongation at break is 16 to 22 percent larger than that of cotton; the wet strength is much reduced, about 50% of the dry strength, and the wet elongation is increased by about 50%. It has a lower modulus than cotton, is easily deformed under a small load, and has poor elastic recovery properties, so that the fabric is easily elongated and has poor dimensional stability. The fiber-rich fiber has higher strength, especially wet strength, smaller elongation at break and dimensional stability than common viscoseIs good. The wear resistance of the common viscose is poor, and the fiber-rich is improved. The chemical composition of viscose fiber is similar to cotton, so it is more alkali-resistant and not acid-resistant, but both alkali-resistant and acid-resistant are worse than cotton. The rich fiber has good alkali resistance and acid resistance. Similarly, the dyeing property of the viscose fiber is similar to that of cotton, the dyeing color spectrum is complete, and the dyeing performance is good. In addition, the thermal property of the viscose fiber is similar to that of cotton, and the density of the viscose fiber is 1.50-1.52 g/cm close to that of the cotton3。
Compared with the production of plant fiber composite cloth in most non-woven fabric factories, the dry method composite technology is adopted, namely, the fiber is mechanically carded into a net and then is compounded with the base cloth, and the method has the following defects: the product is rough, the fiber and the base cloth are not firmly compounded, and the integral surface style is not compact.
The composite cloth produced by the existing wet-type composite cloth device has the phenomenon that the cloth quality (such as smoothness, flatness, peeling strength, wear resistance and the like) is poor in consistency along the width direction.
Disclosure of Invention
The invention aims to solve the problems that the composite cloth product prepared by the existing dry method composite process is rough, the fiber and the base cloth are not firmly compounded, and the integral surface style is not compact; the wet composite cloth has poor consistency along the width direction, and the composite cloth of the superfine denier viscose fiber and the lyocell fiber has the characteristics of water absorption and water locking and fine surface style and is simple and easy in process, low in energy consumption, low in production cost, firm and flat in fiber and base cloth compounding and soft in hand feeling, and the preparation process thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the composite cloth is prepared from a reticular fiber layer and a base cloth, wherein the mass ratio of the reticular fiber layer to the base cloth is 55:45, the reticular fiber layer is formed by a superfine denier viscose fiber slurry through a wet method; the base cloth is non-woven cloth made of lyocell fibers. In the present invention, the lyocell fibers are wood pulp mainly composed of coniferous trees,Mixing water and solvent amine oxide, heating to dissolve completely, removing impurities to spin directly, and the molecular structure is simple carbohydrate. Can be completely decomposed in soil, has no pollution to the environment, and is green and environment-friendly fiber. The fiber is independently spun into non-woven fabric by high-pressure spunlace, and the specification is 15-20g/m2The tencel spunlace fabric with the gram weight and the thickness of 0.18-25mm has the effects of permeability and transparency in a wet state, and the water absorption rate is 600-900 percent.
The superfine viscose fiber has fineness smaller than that of common viscose, less than 1.0Dtex, 0.5-0.6Dtex and length of 3-5 mm. Because of its small fineness, large specific surface area, small bending rigidity, small fiber bending resistance and absolute strength, good moisture absorption and air permeability, soft hand feeling, and semi-transparent fiber after being soaked.
The ultra-fine denier viscose fiber and the lyocell fiber are compounded at the same time, so that the ultra-fine denier viscose fiber and the lyocell fiber are a new product, and the ultra-fine denier viscose fiber and the lyocell fiber are compounded and entangled together through high-pressure spunlace, so that the product has the respective advantages of two materials at the same time. The composite cloth has smooth and glossy surface, elastic and tensile hand feeling, softness and comfort, strong softness and soft texture, skin-sticking feeling and outstanding water absorption and storage capacity. The superfine denier viscose fiber is more permeable by modifying the surface of the superfine denier viscose fiber, and the superfine denier viscose fiber is combined with the characteristics of softness, comfort, water absorption and decontamination of gauze, so that the gauze and the gauze are entangled together by compounding, and the product has the respective advantages of two materials and completely shows the physical property effect of 1+1 greater than 2. The composite cloth has the advantages of smooth and glossy surface, soft hand feeling, good drapability, skin-contacting feeling, outstanding water absorption and storage capacity and perfect combination of the two.
Preferably, the mass percentage concentration of the superfine denier viscose fibers in the superfine denier viscose fiber slurry is 0.65-1.35%.
Preferably, the gram weight of the composite cloth is 33-35g/m2And a thickness of 0.21 to 0.24 mm.
Preferably, the superfine viscose fiber has the fineness of 0.5-0.6Dtex and the length of 3-5 mm; the lyocell fiber is non-woven fabric formed by high-pressure spunlace, and has specification of 15-20g/m2Weight, 0.18-25mm thick tencel spunlace cloth.
Preferably, the superfine denier viscose fiber is modified by the following method: the modification treatment is to put the superfine denier viscose fiber into a container, add ethanol into the container, and soak for 3-5 h; adding 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester accounting for 0.5% of the mass of the superfine denier viscose fiber, heating to 60 ℃ after 15min, adding flavonoid glycoside accounting for the same mass as the 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester, heating to 90 ℃, reacting for 1h at the rotating speed of 1200rpm, soaking in an irradiation solution for 60-70min, taking out, and performing electron beam irradiation on the fiber, wherein the irradiation voltage is 150-180kV, the irradiation current is 2.5-4mA, and the irradiation amount is 40-55kGy, and drying for 60-80min at the temperature of 45-50 ℃ after the electron beam irradiation is finished to obtain the modified superfine denier viscose fiber.
In the technical scheme, the superfine denier viscose fiber is modified, and 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester is used for improving the mechanical properties of the superfine denier viscose fiber, such as the warp/weft tearing strength, the breaking strength and the like; the flavonoid glycoside is used for improving the antibacterial and ultraviolet-proof capability of the superfine denier viscose fiber; and (3) performing electron beam irradiation secondary modification on the reacted fiber, increasing free radicals generated on the fiber after irradiation modification, and generating free radicals by electron beam irradiation modification of flavonoid glycoside in cooperation with flavonoid glycoside to generate an ionic copolymerization phenomenon, so that the antibacterial and mildewproof capability is enhanced.
A preparation process of composite cloth of superfine denier viscose fiber and lyocell fiber comprises the following steps:
(1) mixing raw materials: uniformly mixing clear water and superfine denier viscose fibers to obtain slurry, wherein the mass percentage concentration of the superfine denier viscose fibers in the slurry is 0.65-1.35%;
(2) fiber forming: feeding the slurry into an inclined wire former, and obtaining a reticular fiber layer after the inclined wire is formed;
(3) attaching: the reticular fiber layer is conveyed downwards by the upper conveying net, dehydrated by the vacuum adsorption roller and attached to the base cloth conveyed in the horizontal direction by the lower conveying net to obtain primary composite cloth;
(4) pre-needling: carrying out spunlace compounding on the primary composite cloth by using a first spunlace machine to obtain a medium-grade composite cloth;
(5) and (3) carrying out hydroentanglement: the intermediate-grade composite cloth is further conveyed to a spunlace entanglement unit for spunlace entanglement, and a semi-finished composite cloth is obtained after spunlace entanglement;
(6) dewatering and shaping: and dehydrating the semi-finished composite cloth by a dehydrating roller, reeling, finishing, and finally drying and shaping to obtain the finished composite cloth of the superfine denier viscose fiber and the lyocell fiber.
The production equipment used in the invention is the bulletin number CN 104890339B, the bulletin date is 2017.4.19, the name is a wet composite cloth device, and the production steps of the composite cloth are improved;
the wet composite cloth device comprises a slurry feeding device, a forming net positioned below the slurry feeding device, a composite net positioned below the forming net and a supporting net positioned at the discharge end of the composite net. When the composite cloth is used, the slurry is transferred to the forming net through feeding to form surface cloth, the base cloth advances under the conveying action of the composite net and enters the support net, the surface cloth firstly removes free water and then drops off from the forming net to be compounded on the base cloth on the forming net to form composite cloth, the composite cloth advances under the action of the support net, the fibers of the surface cloth and the base cloth are mutually displaced, clasped and tangled through a second spunlace machine when the composite cloth advances from the support net to form wet composite cloth, and then the wet composite cloth is dried and wound.
The combinable points in each process section are analyzed, the process step of processing the superfine viscose fibers into dry paper in the first step is changed to a wet papermaking process, the forming step is accelerated, and the formed superfine viscose fibers are uniform and flat integrally. The combination of the spunlace composite process part enables the two main raw material parts to be fully combined and linked. The two are combined into one, the process is simple and easy to implement, the energy consumption is low, the production cost is low, the fiber and the base cloth are firmly and flatly combined, the hand feeling is soft, and the surface style is fine and smooth.
Preferably, in the step (4), the first hydroentangling machine includes a water-needling head and a vacuum suction, the water-needling head of the first hydroentangling machine is located above the upper transfer web, the vacuum suction of the first hydroentangling machine is located below the lower transfer web, and the first hydroentangling machine hydroentangles the primary composite fabric through the upper transfer web.
Preferably, in the step (5), the hydroentangling units are formed by 6 to 8 hydroentangling machines which are uniformly distributed at intervals in sequence.
Preferably, the superfine denier viscose fiber is modified before being mixed, and the modification method comprises the following steps: the modification treatment is to put the superfine denier viscose fiber into a container, add ethanol into the container, and soak for 3-5 h; adding 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester accounting for 0.5% of the mass of the superfine denier viscose fiber, heating to 60 ℃ after 15min, adding flavonoid glycoside accounting for the same mass as the 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester, heating to 90 ℃, reacting for 1h at the rotating speed of 1200rpm, soaking in an irradiation solution for 60-70min, taking out, and performing electron beam irradiation on the fiber, wherein the irradiation voltage is 150-180kV, the irradiation current is 2.5-4mA, and the irradiation amount is 40-55kGy, and drying for 60-80min at the temperature of 45-50 ℃ after the electron beam irradiation is finished to obtain the modified superfine denier viscose fiber.
The invention has the beneficial effects that: the gram weight of the finished composite cloth prepared by the invention is 33-35g/m2The thickness of the yarn is 0.21-0.24 mm, the surface style is fine and compact, the cotton is soft and strong, the yarn is semitransparent after being soaked in water, and the yarn only shows the characteristics of the yarn, and meanwhile, the yarn has the performances of quick water absorption, good mildew and moth prevention effects, excellent air permeability and moisture absorption, good moisture retention, thick cotton texture and the like.
Detailed Description
The technical scheme of the invention is further explained by combining the specific embodiment as follows:
the superfine denier viscose fiber adopted by the invention can be a superfine denier viscose fiber directly purchased in the market, and can also be a superfine denier viscose fiber obtained by modifying the superfine denier viscose fiber directly purchased in the market.
The superfine viscose fiber has fineness of 0.5-0.6Dtex and length of 3-5 mm; the lyocell fiber is non-woven fabric formed by high-pressure spunlace, and has specification of 15-20g/m2Weight, 0.18-25mm thick tencel spunlace cloth.
The composite cloth is made by compounding a reticular fiber layer and two sides of a base cloth.
Example 1
The composite cloth is prepared from a reticular fiber layer and a base cloth, the mass ratio of the reticular fiber layer to the base cloth is 55:45, and the reticular fiber layer is formed by a superfine viscose fiber slurry through a wet method; the base cloth is non-woven cloth made of lyocell fibers. The superfine denier viscose fiber is modified.
A preparation process of composite cloth of superfine denier viscose fiber and lyocell fiber comprises the following steps:
(1) mixing raw materials: uniformly mixing clear water and superfine denier viscose fibers to obtain slurry, wherein the mass percentage concentration of the superfine denier viscose fibers in the slurry is 0.65%; the method for modifying the superfine denier viscose fiber comprises the following steps: the modification treatment is to put the superfine denier viscose fiber into a container, add ethanol into the container, and soak for 5 hours; adding 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester accounting for 0.5% of the mass of the superfine denier viscose fiber, heating to 60 ℃ after 15min, adding flavonoid glycoside accounting for the same mass as the 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester, heating to 90 ℃, reacting for 1h at the rotating speed of 1200rpm, soaking in an irradiation solution for 70min, taking out, performing electron beam irradiation on the obtained product, wherein the irradiation voltage is 180kV, the irradiation current is 4mA, the irradiation amount is 55kGy, and drying for 80min at the temperature of 50 ℃ after the electron beam irradiation is finished to obtain the modified superfine denier viscose fiber;
(2) fiber forming: feeding the slurry into an inclined wire former, and obtaining a reticular fiber layer after the inclined wire is formed;
(3) attaching: the reticular fiber layer is conveyed downwards by the upper conveying net, dehydrated by the vacuum adsorption roller and attached to the base cloth conveyed in the horizontal direction by the lower conveying net to obtain primary composite cloth;
(4) pre-needling: the primary composite cloth is subjected to spunlace compounding through a first spunlace machine to obtain a middle-grade composite cloth, the first spunlace machine comprises a spunlace head and a vacuum suction device, the spunlace head of the first spunlace machine is positioned above an upper conveying net, the vacuum suction device of the first spunlace machine is positioned below a lower conveying net, and the first spunlace machine carries out spunlace on the primary composite cloth through the upper conveying net;
(5) and (3) carrying out hydroentanglement: the intermediate-grade composite cloth is further conveyed to a spunlace entanglement unit for spunlace entanglement, the spunlace entanglement unit is formed by 6 spunlace machines which are sequentially and uniformly distributed at intervals, and a semi-finished composite cloth is obtained after spunlace entanglement;
(6) dewatering and shaping: and dehydrating the semi-finished composite cloth by a dehydrating roller, reeling, finishing, and finally drying and shaping to obtain the finished composite cloth of the superfine denier viscose fiber and the lyocell fiber.
Example 2
The composite cloth is prepared from a reticular fiber layer and a base cloth, the mass ratio of the reticular fiber layer to the base cloth is 55:45, and the reticular fiber layer is formed by a superfine viscose fiber slurry through a wet method; the base cloth is non-woven cloth made of lyocell fibers. The superfine denier viscose fiber is modified.
A preparation process of composite cloth of superfine denier viscose fiber and lyocell fiber comprises the following steps:
(1) mixing raw materials: uniformly mixing clear water and superfine denier viscose fibers to obtain slurry, wherein the mass percentage concentration of the superfine denier viscose fibers in the slurry is 1.2%; the method for modifying the superfine denier viscose fiber comprises the following steps: the modification treatment is to put the superfine denier viscose fiber into a container, add ethanol into the container, and soak for 3 hours; adding 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester accounting for 0.5% of the mass of the superfine denier viscose fiber, heating to 60 ℃ after 15min, adding flavonoid glycoside accounting for the same mass as the 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester, heating to 90 ℃, reacting for 1h at the rotating speed of 1200rpm, soaking in an irradiation solution for 60min, taking out, irradiating the fiber by an electron beam, wherein the irradiation voltage is 150kV, the irradiation current is 2.5mA, the irradiation amount is 40kGy, and drying for 60min at the temperature of 45 ℃ after the irradiation of the electron beam is finished to obtain the modified superfine denier viscose fiber;
(2) fiber forming: feeding the slurry into an inclined wire former, and obtaining a reticular fiber layer after the inclined wire is formed;
(3) attaching: the reticular fiber layer is conveyed downwards by the upper conveying net, dehydrated by the vacuum adsorption roller and attached to the base cloth conveyed in the horizontal direction by the lower conveying net to obtain primary composite cloth;
(4) pre-needling: the primary composite cloth is subjected to spunlace compounding through a first spunlace machine to obtain a middle-grade composite cloth, the first spunlace machine comprises a spunlace head and a vacuum suction device, the spunlace head of the first spunlace machine is positioned above an upper conveying net, the vacuum suction device of the first spunlace machine is positioned below a lower conveying net, and the first spunlace machine carries out spunlace on the primary composite cloth through the upper conveying net;
(5) and (3) carrying out hydroentanglement: the intermediate-grade composite cloth is further conveyed to a spunlace entanglement unit for spunlace entanglement, the spunlace entanglement unit is formed by 7 spunlace machines which are sequentially and uniformly distributed at intervals, and a semi-finished composite cloth is obtained after spunlace entanglement;
(6) dewatering and shaping: and dehydrating the semi-finished composite cloth by a dehydrating roller, reeling, finishing, and finally drying and shaping to obtain the finished composite cloth of the superfine denier viscose fiber and the lyocell fiber.
Example 3
The composite cloth is prepared from a reticular fiber layer and a base cloth, the mass ratio of the reticular fiber layer to the base cloth is 55:45, and the reticular fiber layer is formed by a superfine viscose fiber slurry through a wet method; the base cloth is non-woven cloth made of lyocell fibers. The superfine denier viscose fiber is not modified.
A preparation process of composite cloth of superfine denier viscose fiber and lyocell fiber comprises the following steps:
(1) mixing raw materials: uniformly mixing clear water and superfine denier viscose fibers to obtain slurry, wherein the mass percentage concentration of the superfine denier viscose fibers in the slurry is 1.65%;
(2) fiber forming: feeding the slurry into an inclined wire former, and obtaining a reticular fiber layer after the inclined wire is formed;
(3) attaching: the reticular fiber layer is conveyed downwards by the upper conveying net, dehydrated by the vacuum adsorption roller and attached to the base cloth conveyed in the horizontal direction by the lower conveying net to obtain primary composite cloth;
(4) pre-needling: the primary composite cloth is subjected to spunlace compounding through a first spunlace machine to obtain a middle-grade composite cloth, the first spunlace machine comprises a spunlace head and a vacuum suction device, the spunlace head of the first spunlace machine is positioned above an upper conveying net, the vacuum suction device of the first spunlace machine is positioned below a lower conveying net, and the first spunlace machine carries out spunlace on the primary composite cloth through the upper conveying net;
(5) and (3) carrying out hydroentanglement: the intermediate-grade composite cloth is further conveyed to a spunlace entanglement unit for spunlace entanglement, the spunlace entanglement unit is formed by sequentially and uniformly distributing 8 spunlace machines at intervals, and a semi-finished composite cloth is obtained after spunlace entanglement;
(6) dewatering and shaping: and dehydrating the semi-finished composite cloth by a dehydrating roller, reeling, finishing, and finally drying and shaping to obtain the finished composite cloth of the superfine denier viscose fiber and the lyocell fiber.
The composite cloths prepared in examples 1 to 3 were tested, and the test results are shown in table 1.
TABLE 1 test results
Claims (7)
1. The composite cloth of the superfine denier viscose fibers and the lyocell fibers is characterized by being prepared from a reticular fiber layer and a base cloth, wherein the mass ratio of the reticular fiber layer to the base cloth is 55:45, and the reticular fiber layer is formed by a superfine denier viscose fiber slurry through a wet method; the base cloth is non-woven cloth made of lyocell fibers;
the superfine denier viscose fiber is modified, and the modification method comprises the following steps: the modification treatment is to put the superfine denier viscose fiber into a container, add ethanol into the container, and soak for 3-5 h; adding 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester accounting for 0.5% of the mass of the superfine denier viscose fiber, heating to 60 ℃ after 15min, adding flavonoid glycoside accounting for the same mass as the 3-hydroxybutyric acid-4-hydroxybutyric acid copolyester, heating to 90 ℃, reacting for 1h at the rotating speed of 1200rpm, soaking in an irradiation solution for 60-70min, taking out, and performing electron beam irradiation on the fiber, wherein the irradiation voltage is 150-180kV, the irradiation current is 2.5-4mA, and the irradiation amount is 40-55kGy, and drying for 60-80min at the temperature of 45-50 ℃ after the electron beam irradiation is finished to obtain the modified superfine denier viscose fiber.
2. The composite cloth of the superfine denier viscose fiber and the lyocell fiber according to claim 1, wherein the mass percentage concentration of the superfine denier viscose fiber in the superfine denier viscose fiber slurry is 0.65-1.35%.
3. The composite cloth of the superfine denier viscose fiber and the lyocell fiber according to claim 1 or 2, wherein the composite cloth has a grammage of 33-35 g/square meter and a thickness of 0.21-0.24 mm.
4. The composite cloth of the superfine denier viscose fiber and the lyocell fiber according to claim 1 or 2, wherein the superfine viscose fiber has a fineness of 0.5-0.6Dtex and a length of 3-5 mm; the lyocell fiber is non-woven fabric formed by high-pressure spunlace, and has specification of 15-20g/m2Weight, 0.18-25mm thick tencel spunlace cloth.
5. The preparation process of the composite cloth of the superfine denier viscose fiber and the lyocell fiber according to claim 1, wherein the preparation method comprises the following steps:
(1) mixing raw materials: uniformly mixing clear water and superfine denier viscose fibers to obtain slurry, wherein the mass percentage concentration of the superfine denier viscose fibers in the slurry is 0.65-1.35%;
(2) fiber forming: feeding the slurry into an inclined wire former, and obtaining a reticular fiber layer after the inclined wire is formed;
(3) attaching: the reticular fiber layer is conveyed downwards by the upper conveying net, dehydrated by the vacuum adsorption roller and attached to the base cloth conveyed in the horizontal direction by the lower conveying net to obtain primary composite cloth;
(4) pre-needling: carrying out spunlace compounding on the primary composite cloth by using a first spunlace machine to obtain a medium-grade composite cloth;
(5) and (3) carrying out hydroentanglement: the intermediate-grade composite cloth is further conveyed to a spunlace entanglement unit for spunlace entanglement, and a semi-finished composite cloth is obtained after spunlace entanglement;
(6) dewatering and shaping: and dehydrating the semi-finished composite cloth by a dehydrating roller, reeling, finishing, and finally drying and shaping to obtain the finished composite cloth of the superfine denier viscose fiber and the lyocell fiber.
6. The process for preparing a composite cloth of ultra fine denier viscose fiber and lyocell fiber as claimed in claim 5, wherein in the step (4), the first hydroentangling machine includes a hydroentangling head and a vacuum suction device, the hydroentangling head of the first hydroentangling machine is located above the upper transfer wire, the vacuum suction device of the first hydroentangling machine is located below the lower transfer wire, and the first hydroentangling machine hydroentangles the primary composite cloth through the upper transfer wire.
7. The process for preparing the composite cloth of the superfine denier viscose fiber and the lyocell fiber according to claim 5, wherein in the step (5), the hydroentangling units are sequentially and uniformly distributed at intervals by 6 to 8 hydroentangling machines.
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Denomination of invention: A composite cloth of superfine denier viscose fiber and Lyocell fiber and its preparation process Effective date of registration: 20221030 Granted publication date: 20220222 Pledgee: Zhejiang Fuyang rural commercial bank Limited by Share Ltd. deer Hill sub branch Pledgor: HANGZHOU XIEYE MICROFIBER CO.,LTD. Registration number: Y2022980020016 |
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