CN112831911A - Non-woven fabric and preparation method thereof - Google Patents

Non-woven fabric and preparation method thereof Download PDF

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Publication number
CN112831911A
CN112831911A CN202011616209.2A CN202011616209A CN112831911A CN 112831911 A CN112831911 A CN 112831911A CN 202011616209 A CN202011616209 A CN 202011616209A CN 112831911 A CN112831911 A CN 112831911A
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China
Prior art keywords
silk
fiber
nonwoven fabric
spunlace
woven fabric
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Pending
Application number
CN202011616209.2A
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Chinese (zh)
Inventor
张丽
潘刚伟
杨占平
苏凯
陈昀
郝俊强
黄海建
石浩轩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunming Cellulose Fibers Co ltd
Zhuhai Cellulose Fibers Co ltd
Nantong Cellulose Fibers Co Ltd
Original Assignee
Kunming Cellulose Fibers Co ltd
Zhuhai Cellulose Fibers Co ltd
Nantong Cellulose Fibers Co Ltd
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Application filed by Kunming Cellulose Fibers Co ltd, Zhuhai Cellulose Fibers Co ltd, Nantong Cellulose Fibers Co Ltd filed Critical Kunming Cellulose Fibers Co ltd
Priority to CN202011616209.2A priority Critical patent/CN112831911A/en
Publication of CN112831911A publication Critical patent/CN112831911A/en
Pending legal-status Critical Current

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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
    • D04H1/42—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
    • 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
    • D04H1/42—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
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • D04H1/42—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
    • D04H1/4391—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 characterised by the shape of the fibres
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The acetate fiber/silk non-woven fabric is prepared by blending acetate fiber and silk, wherein the mass ratio of the acetate fiber to the silk is 1: 99-99: 1. The surface density of the non-woven fabric is 30-100 g/m2The tensile breaking strength is 10-90N, and the water absorption rate is 8-20. The preparation method of the non-woven fabric comprises the steps of opening, forming a net, laying the net, reinforcing, drying and the like. The cellulose acetate/silk non-woven fabric prepared by the method has a biodegradation rate of 100% under the controlled composting condition. The acetate fiber/silk non-woven fabric has the oxidation resistance, radiation resistance and antibacterial property of silk and the softness of acetate fiberHigh liquid absorption and low cost. Therefore, the acetate fiber/silk non-woven fabric has wide market prospect in the cosmetic daily chemical field including products such as mask base cloth and the like.

Description

Non-woven fabric and preparation method thereof
Technical Field
The invention belongs to the technical field of non-woven fabrics, and relates to a non-woven fabric blended by acetate fibers and other fibers and a preparation method thereof.
Background
Chinese invention patent CN201620090194.3 discloses a multi-layer nonwoven fabric comprising an acetate fiber layer, a polyester fiber layer and a polyethylene film layer, which makes the nonwoven fabric have water permeability and durability; the Chinese invention patent CN201810927569.0 discloses a non-woven fabric formed by the adhesion of a nanometer acetate fiber layer and an acetate fiber non-woven fabric layer, wherein the non-woven fabric has a certain nanometer effect; the Chinese invention patent CN201810556769.X discloses a multi-component non-woven fabric which is formed by spunlacing acetate fibers, soybean protein fibers, aloe fibers, corn protein fibers, folium artemisiae argyi fibers and the like, and has the characteristics of easy degradation, environmental protection and no pollution. On the other hand, because acetate fibers have low strength and limited functions, the use of acetate fibers or non-woven fabrics mainly made of acetate fibers also has the defects of low strength and narrow application range, which limits the application of acetate fibers in the fields of mask base fabrics and the like to a certain extent.
Disclosure of Invention
The invention aims to provide a cellulose acetate/silk non-woven fabric and a preparation method thereof, which not only improve the strength of the cellulose acetate non-woven fabric, but also have the characteristics of oxidation resistance, radiation resistance, bacteria resistance, skin friendliness and the like, and endow the cellulose acetate non-woven fabric with new functions in the aspect of application of mask base fabrics and the like.
In order to achieve the purpose, the invention adopts the technical scheme that:
the acetate fiber/silk non-woven fabric is prepared by blending acetate fiber and silk, wherein the mass ratio of the acetate fiber to the silk is 1: 99-99: 1.
Further, the surface density of the non-woven fabric is 30-100 g/m2The tensile breaking strength is 10-90N, and the water absorption rate is 8-20.
Optionally, the non-woven fabric has an areal density of 35-80 g/m2。
Optionally, the tensile breaking strength of the non-woven fabric is 15-60N.
Optionally, the water absorption rate of the non-woven fabric is 10-15.
Optionally, the cross section of the acetate fiber is round or irregular, and the irregular shape comprises a Y shape, an X shape, an I shape, an R shape and the like;
optionally, the length of the acetate fiber is 30-90 mm, and the fineness of the acetate fiber is 0.8-6.0 dtex.
Optionally, the length of the silk is 30-90 mm, and the fineness of the silk is 0.8-6.0 dtex.
Optionally, the silk is mulberry silk, tussah silk or a mixture of mulberry silk and tussah silk, and may contain sericin or remove sericin.
Preferably, the silk is sericin-containing silk, and the sericin has high water absorption rate and water absorption rate of 300-500 and is easy to hydrolyze to release amino acid. The acetate fiber has a certain acidic pH value in water, which is more beneficial to the hydrolysis of sericin and can ensure that the silk releases amino acid in a short time.
The cellulose acetate/silk non-woven fabric has a biodegradation rate of 100% under the controlled composting condition.
The preparation method of the acetate fiber/silk non-woven fabric comprises the following steps:
s1, mixed opening
And (3) loosening the acetate fibers and the silk fibers, and simultaneously uniformly mixing the acetate fibers and the silk fibers. Because the crimp degree of the acetate fiber is large and static electricity is easy to generate, the acetate fiber is subjected to wetting treatment during mixing, and uneven mixing caused by fiber entanglement is avoided. The mass ratio of the two fibers is 1: 99-99: 1;
s2, forming a net
Adopting a web forming method to enable the mixed fibers to be in a thin fiber web state; the web forming method can be carding web forming, one or two carding processes are adopted in a carding stage, the first carding process is used for carding the fibers to be carded to form a fiber web, and then the two carded fiber webs are fed into a second carding machine in an overlapping mode; the web forming method can also be air-laid web forming, and fiber webs with fibers distributed in three dimensions are prepared by opening and mixing the fibers through an air-laid web forming machine set;
s3, lapping
In the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is determined by the thickness of the non-woven fabric;
s4, reinforcing
Reinforcing the fiber net to obtain a non-woven fabric; the reinforcing method can be spunlace reinforcement, a fiber net is placed on a trawl curtain and enters a flat net spunlace region along with the movement of the trawl curtain, spunlace processing is carried out, the spunlace pressure is 2-5 MPa, the spunlace feeding speed is 5-15 m/min, the number of spunlace channels is 1-5, and excess water can be rolled out by a mangle roller after spunlace; the spunlace processing can also be drum spunlace or combination of flat-web spunlace and drum spunlace; the reinforcing method can also be needling reinforcing, the fiber web is input into a needling machine and is subjected to pre-needling and main needling, the needling frequency is 300-3000 needling/min, and the needling density is 100-2000 needling/cm2(ii) a The reinforcing mode can also be a combination of needling and spunlacing;
s5, drying
Drying the spunlaced or needled non-woven fabric at the drying temperature of 40-90 ℃ for 5-50 min to obtain the degradable, high-liquid-absorption and ultra-soft cellulose acetate/silk non-woven fabric.
The application of the non-woven fabric in the field of cosmetic daily chemical products comprises the step of using the non-woven fabric to prepare a mask base fabric.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the cellulose acetate/silk non-woven fabric prepared by the method has a biodegradation rate of 100% under the controlled composting condition. The acetate fiber/silk non-woven fabric has the advantages of oxidation resistance, radiation resistance and antibacterial property of silk, softness and high liquid absorption of the acetate fiber, and the cost of the pure silk non-woven fabric can be reduced. Therefore, the acetate fiber/silk non-woven fabric has wide market prospect in the cosmetic daily chemical field including products such as mask base cloth and the like.
Detailed Description
The present invention will be further described with reference to the following examples.
The used machine equipment comprises FLBG114-100 type spunlace units and BG 121-100 type air-jet netting machines.
Example 1
The cross section of the acetate fiber is Y-shaped, the length of the fiber is 38mm, and the fineness of the fiber is 1.8 dtex; the length of the mulberry silk fiber is 38mm, and the fineness is 2 dtex. The mass ratio of the acetate fibers to the silk is 90: 10.
(1) Mixing and opening: loosening acetate fibers and silk fibers, and carrying out drenching treatment on the acetate fibers, wherein the two fibers are uniformly mixed;
(2) forming a net: in the carding stage, a carding process is adopted, and fibers to be carded form a fiber web;
(3) lapping: in the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is 8;
(4) reinforcing: placing the fiber web on a net laying curtain, moving the fiber web along with the net laying curtain, enabling the fiber web to enter a flat-net spunlace region, carrying out spunlace processing, carrying out spunlace by adopting 1 step, wherein the spunlace pressure is 3MPa, the spunlace feeding speed is 8m/min, and rolling the fiber web by using a mangle after the spunlace to obtain redundant water;
(5) drying: and drying the spunlaced non-woven fabric at the drying temperature of 40 ℃ for 40min to obtain the degradable, high-liquid-absorption and ultra-soft acetate fiber/silk non-woven fabric.
The cellulose acetate fiber/silk non-woven fabric has an areal density of 39.8g/m2The tensile strength is 12.4N, the water absorption rate is 14.4, and the biodegradation rate is 100%.
Example 2
The cross section of the acetate fiber is Y-shaped, the length of the fiber is 64mm, and the fineness of the fiber is 1.6 dtex; the length of the mulberry silk fiber is 64mm, and the fineness is 2 dtex. The mass ratio of the acetate fibers to the silk is 80: 20.
(1) Mixing and opening: loosening acetate fibers and silk fibers, carrying out drenching treatment on the acetate fibers, and simultaneously uniformly mixing the two fibers;
(2) forming a net: in the carding stage, a two-pass carding process is adopted, the first pass is used for carding the fiber to be carded to form a fiber web, and then the two carded fiber webs are fed into a second pass carding machine in an overlapping manner;
(3) lapping: in the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is 7;
(4) reinforcing: placing the fiber web on a lapping screen, moving the fiber web along with the lapping screen, enabling the fiber web to enter a flat-web spunlace region, carrying out spunlace processing, carrying out 2-time spunlace, wherein the pressure of the first-time spunlace is 2MPa, the pressure of the second-time spunlace is 4MPa, the feeding speed of the spunlace is 8m/min, and rolling out redundant water through a mangle roller after the spunlace;
(5) drying: and drying the spunlaced non-woven fabric at the drying temperature of 50 ℃ for 30min to obtain the degradable, high-liquid-absorption and ultra-soft acetate fiber/silk non-woven fabric.
The cellulose acetate fiber/silk non-woven fabric has an areal density of 35g/m2The tensile strength is 19.7N, the water absorption rate is 14.2, and the biodegradation rate is 100%.
Example 3
The cross section of the acetate fiber is R-shaped, the length of the fiber is 90mm, and the fineness of the fiber is 0.8 dtex; the tussah silk fiber has a length of 90mm and a fineness of 0.9 dtex. The mass ratio of the acetate fibers to the silk is 1: 99.
(1) Mixing and opening: loosening acetate fibers and silk fibers, carrying out drenching treatment on the acetate fibers, and simultaneously uniformly mixing the two fibers;
(2) forming a net: in the carding stage, a two-pass carding process is adopted, the first pass is used for carding the fiber to be carded to form a fiber web, and then the two carded fiber webs are fed into a second pass carding machine in an overlapping manner;
(3) lapping: in the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is 6;
(4) reinforcing: placing the fiber web on a lapping screen, moving the fiber web along with the lapping screen, enabling the fiber web to enter a flat-web spunlace region, carrying out spunlace processing, carrying out 2-time spunlace, wherein the pressure of the first-time spunlace is 2MPa, the pressure of the second-time spunlace is 4MPa, the feeding speed of the spunlace is 5m/min, and rolling out redundant water through a mangle roller after the spunlace;
(5) drying: and drying the spunlaced non-woven fabric at the drying temperature of 90 ℃ for 5min to obtain the degradable, high-liquid-absorption and ultra-soft acetate fiber/silk non-woven fabric.
The cellulose acetate fiber/silk non-woven fabric has an areal density of 30g/m2The tensile strength is 90N, the water absorption rate is 20, and the biodegradation rate is 100%.
Example 4
The cross section of the acetate fiber is Y-shaped, the length of the fiber is 30mm, and the fineness of the fiber is 6 dtex; the length of the mulberry silk (sericin removed) fiber is 30mm, and the fineness is 6 dtex. The mass ratio of the acetate fibers to the silk is 99: 1.
(1) Mixing and opening: loosening acetate fibers and silk fibers, carrying out drenching treatment on the acetate fibers, and simultaneously uniformly mixing the two fibers;
(2) forming a net: in the carding stage, a two-pass carding process is adopted, the first pass is used for carding the fiber to be carded to form a fiber web, and then the two carded fiber webs are fed into a second pass carding machine in an overlapping manner;
(3) lapping: in the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is 20;
(4) reinforcing: placing the fiber web on a lapping screen, moving the fiber web along with the lapping screen, enabling the fiber web to enter a flat-web spunlace region, carrying out spunlace processing, carrying out 2-time spunlace, wherein the pressure of the first-time spunlace is 3MPa, the pressure of the second-time spunlace is 5MPa, the feeding speed of the spunlace is 15m/min, and rolling out redundant water through a mangle roller after the spunlace;
(5) drying: and drying the spunlaced non-woven fabric at the drying temperature of 40 ℃ for 50min to obtain the degradable, high-liquid-absorption and ultra-soft acetate fiber/silk non-woven fabric.
The cellulose acetate fiber/silk non-woven fabric has an areal density of 100g/m2The tensile strength is 10N, the water absorption rate is 8, and the biodegradation rate is 100%.
Example 5
The cross section of the acetate fiber is Y-shaped, the length of the fiber is 50mm, and the fineness of the fiber is 2.2 dtex; the length of the mulberry silk (containing sericin) fiber is 50mm, and the fineness is 2.2 dtex. The mass ratio of the acetate fibers to the silk is 70: 30.
(1) Mixing and opening: loosening acetate fibers and silk fibers, carrying out drenching treatment on the acetate fibers, and simultaneously uniformly mixing the two fibers;
(2) forming a net: in the carding stage, a two-pass carding process is adopted, the first pass is used for carding the fiber to be carded to form a fiber web, and then the two carded fiber webs are fed into a second pass carding machine in an overlapping manner;
(3) lapping: in the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is 8;
(4) reinforcing, namely putting the fiber net on a net laying curtain, and carrying out needling processing on the fiber net along with the movement of the net laying curtain, wherein the needling is divided into two process processes of pre-needling and main needling; the needling frequency in the pre-needling stage is 500 spines/min, and the needling density is 200 spines/cm2The needling frequency in the main needling stage is 1200 needling/min, and the needling density is 500 needling/cm2；
(5) Drying: and drying the needled non-woven fabric at the drying temperature of 60 ℃ for 20min to obtain the degradable, high-liquid-absorption and ultra-soft acetate fiber/silk non-woven fabric.
The cellulose acetate fiber/silk non-woven fabric has high surface densityThe degree is 42.2g/m2The tensile strength is 18.6N, the water absorption rate is 14.1, and the biodegradation rate is 100%.
Example 6
The cross section of the acetate fiber is Y-shaped, the length of the fiber is 56mm, and the fineness of the fiber is 2.6 dtex; the silk fiber has a length of 56mm and a fineness of 2.2 dtex. The mass ratio of the acetate fibers to the silk is 50: 50.
(1) Mixing and opening: loosening acetate fibers and silk fibers, carrying out drenching treatment on the acetate fibers, and simultaneously uniformly mixing the two fibers;
(2) forming a net: adopting an air-laid process in a carding stage to obtain a fiber web;
(3) lapping: in the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is 7;
(4) reinforcing, namely putting the fiber net on a net laying curtain, and carrying out pre-needling processing on the fiber net along with the movement of the net laying curtain, wherein the needling frequency in the pre-needling stage is 400 punches/min, and the needling density is 300 punches/cm2(ii) a Then the fiber web enters a flat-screen spunlace area for spunlace processing, 2 spunlaces are adopted, the pressure of the first spunlace is 2MPa, the pressure of the second spunlace is 3MPa, the spunlace feeding speed is 10m/min, and the excess water is rolled out by a mangle roller after the spunlace;
(5) drying: and drying the spunlaced non-woven fabric at the drying temperature of 50 ℃ for 30min to obtain the degradable, high-liquid-absorption and ultra-soft acetate fiber/silk non-woven fabric.
The cellulose acetate fiber/silk non-woven fabric has an areal density of 36.8g/m2The tensile strength is 38.6N, the water absorption rate is 13.8, and the biodegradation rate is 100%.
Example 7
The cross section of the acetate fiber is X-shaped, the length of the fiber is 38mm, and the fineness is 2.5 dtex; the silk fiber has a length of 38mm and a fineness of 2.5 dtex. The mass ratio of the acetate fibers to the silk is 10: 90.
(1) Mixing and opening: loosening acetate fibers and silk fibers, carrying out drenching treatment on the acetate fibers, and simultaneously uniformly mixing the two fibers;
(2) forming a net: in the carding stage, a two-pass carding process is adopted, the first pass is used for carding the fiber to be carded to form a fiber web, and then the two carded fiber webs are fed into a second pass carding machine in an overlapping manner;
(3) lapping: in the lapping stage, a cross lapping mode is adopted, and the number of lapping layers is 7;
(4) reinforcing: placing the fiber web on a net laying curtain, and pre-needling the fiber web along with the movement of the net laying curtain, wherein the needling frequency in the pre-needling stage is 300 spines/min, and the needling density is 600 spines/cm2(ii) a Then the fiber web enters a flat-screen spunlace area for spunlace processing, 2 spunlaces are adopted, the pressure of the first spunlace is 2MPa, the pressure of the second spunlace is 4MPa, the spunlace feeding speed is 10m/min, and the excess water is rolled out by a mangle roller after the spunlace;
(5) drying: and drying the spunlaced non-woven fabric at the drying temperature of 50 ℃ for 30min to obtain the degradable, high-liquid-absorption and ultra-soft acetate fiber/silk non-woven fabric.
The cellulose acetate fiber/silk non-woven fabric has an areal density of 37.4g/m2The tensile strength is 48.9N, the water absorption rate is 13.1, and the biodegradation rate is 100%.
Example 8
(1) 1.5g of the cellulose acetate/silk non-woven fabric prepared in example 2 and 25ml of essence are processed into the facial mask by adopting a dry-wet separation method.
(2) When the facial mask is used, the essence and cellulose acetate fiber/silk non-woven fabric are mixed, and the mixture is soaked in warm water at 40 ℃ for 15min, so that amino acids in silk are fully released in a weak acid environment.
Example 9
(1) 1.5g of the cellulose acetate/silk non-woven fabric prepared in example 4 was soaked in 25ml of essence to prepare a facial mask.
(2) The facial mask can be directly used after being unpacked, and amino acid can be released in a weak acid environment.
The cellulose acetate fiber/silk non-woven fabric obtained by the invention has the characteristics of degradability, high liquid absorption, super softness and the like; since the silk fiber has higher mechanical strength and has the characteristics of oxidation resistance, radiation resistance, bacteria resistance, skin friendliness and the like, the strength of the acetate fiber non-woven fabric can be improved on the one hand by mixing with the acetate fiber. On the other hand, the addition of silk fibers imparts new functionality to the acetate fiber facial film substrate.
The foregoing description and description of the embodiments are provided to facilitate understanding and application of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications can be made to these teachings and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above description and the description of the embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (20)

1. A nonwoven fabric characterized by: the silk fabric is prepared by blending acetate fibers and silk, wherein the mass ratio of the acetate fibers to the silk is (1:99) - (99: 1).
2. A nonwoven fabric according to claim 1, wherein: the surface density of the non-woven fabric is 30-100 g/m2Preferably, it is 35 to 80g/m2。
3. A nonwoven fabric according to claim 1, wherein: the tensile breaking strength of the non-woven fabric is 10-90N, preferably 15-60N.
4. A nonwoven fabric according to claim 1, wherein: the water absorption rate of the non-woven fabric is 8-20, preferably 10-15.
5. A nonwoven fabric according to claim 1, wherein: the cross section of the acetate fiber is round, Y-shaped, X-shaped, I-shaped or R-shaped.
6. A nonwoven fabric according to claim 1, wherein: the length of the acetate fiber is 30-90 mm; and/or the fineness of the acetate fiber is 0.8-6.0 dtex.
7. A nonwoven fabric according to claim 1, wherein: the length of the silk fibers is 30-90 mm; and/or the fineness is 0.8 to 6.0 dtex.
8. A nonwoven fabric according to claim 1, wherein: the silk is mulberry silk, tussah silk or the mixture of the mulberry silk and the tussah silk.
9. A nonwoven fabric according to claim 1, wherein: the silk contains sericin, has high water absorption rate and is easy to hydrolyze to release amino acid.
10. A nonwoven fabric according to any of claims 1 to 9, wherein: the biodegradation rate of the nonwoven fabric under controlled composting conditions was 100%.
11. A method of producing a nonwoven fabric according to any of claims 1 to 10, comprising the steps of:
s1, mixing and opening, namely, loosening acetate fibers and silk fibers, and simultaneously uniformly mixing the two fibers;
s2, forming a net, wherein the mixed fibers are in a thin fiber net state by adopting a net forming method;
s3, lapping, wherein a cross lapping mode is adopted in a lapping stage;
s4, reinforcing: reinforcing the fiber net to obtain a non-woven fabric;
and S5, drying, namely drying the spunlaced or needled non-woven fabric.
12. The method of producing a nonwoven fabric according to claim 11, characterized in that: the web forming method of the step S2 comprises carding web forming and air laying.
13. The method of producing a nonwoven fabric according to claim 12, characterized in that: the step S2 is that one or two carding processes are adopted in the carding stage, the first carding process is to comb the fiber to be carded into fiber web, then the two carded fiber webs are overlapped and fed into the second carding machine; the air-laid is a fiber web with fibers in three-dimensional distribution, which is prepared by opening and mixing the fibers through an air-laid machine set.
14. The method of producing a nonwoven fabric according to claim 11, characterized in that: the reinforcement method described in step S4 includes hydroentangling reinforcement, needling reinforcement, and a combination of needling reinforcement and hydroentangling reinforcement.
15. The method of producing a nonwoven fabric according to claim 14, characterized in that: the spunlace reinforcement is to place the fiber web on a trawl door, the fiber web enters a flat-net spunlace area along with the movement of the trawl door, the spunlace processing is carried out, the spunlace pressure is 2-5 MPa, the spunlace feeding speed is 5-15 m/min, the number of spunlace channels is 1-5, and the excess water can be rolled out by a mangle roller after the spunlace.
16. The method of producing a nonwoven fabric according to claim 14, characterized in that: the spunlace reinforcement is the combination of drum spunlace or flat-net spunlace and drum spunlace.
17. The method of producing a nonwoven fabric according to claim 14, characterized in that: the needling reinforcement is to input the fiber web into a needling machine, and the fiber web is subjected to pre-needling and main needling, wherein the needling frequency is 300-3000 needling/min, and the needling density is 100-2000 needling/cm2。
18. The method of producing a nonwoven fabric according to claim 11, characterized in that: and step S5, drying, wherein the drying temperature is 40-90 ℃, and the drying time is 5-50 min.
19. Use of the nonwoven fabric according to any one of claims 1 to 10 in the field of cosmetic daily use chemicals.
20. Use according to claim 19, characterized in that: the non-woven fabric is used for preparing a mask base fabric.
CN202011616209.2A 2020-12-30 2020-12-30 Non-woven fabric and preparation method thereof Pending CN112831911A (en)

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