CN106835492A - A kind of cashmere protein cellulose fiber spunlace non-woven cloth and its production method - Google Patents
A kind of cashmere protein cellulose fiber spunlace non-woven cloth and its production method Download PDFInfo
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- CN106835492A CN106835492A CN201611163223.5A CN201611163223A CN106835492A CN 106835492 A CN106835492 A CN 106835492A CN 201611163223 A CN201611163223 A CN 201611163223A CN 106835492 A CN106835492 A CN 106835492A
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- cashmere
- fiber
- albumen
- woven cloth
- spunlace non
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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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
- D01F2/08—Composition of the spinning solution or the bath
-
- 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
- D04H1/44—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
- D04H1/495—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 for formation of patterns, e.g. drilling or rearrangement
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a kind of cashmere protein cellulose fiber spunlace non-woven cloth and its production method, it is related to feature spunlace non-woven cloth preparation field, the spunlace non-woven cloth is made up of the fiber of following percentage by weight：5 15% cashmere albumen, 85 95% cotton fiber or synthetic fibers, cashmere albumen is grafted on cellulose by silane coupler, the fiber number of fiber is 1.33-1.67dtex, production method is combined with the preparation process of cashmere protein cellulose fiber, the content of the cashmere albumen in non-woven fabrics is up to 5 15%, cashmere albumen is connected with cotton fiber with covalent bond, cashmere albumen turns into a part for cotton fiber (viscose rayon), because cashmere albumen is connected with cotton fiber with covalent bond, the original mechanical property of cotton fiber is not influenceed, assigned on the basis of the excellent textile performance of cellulose fibre is kept smooth as its cashmere, soft feel and correlation properties, cashmere (wool) complex fiber material surface is smooth obtained in such cashmere protein cellulose fiber, it is difficult balling-up.
Description
Technical field
The present invention relates to feature spunlace non-woven cloth preparation field, and in particular to a kind of cashmere protein cellulose fiber spun lacing
Non-woven fabrics and its production method.
Background technology
Wool is the important source material of textile industry, and it has the advantages that, and elastic good, hygroscopicity is strong, warmth retention property is good, and wool spins
Fabric is famous with its luxurious graceful, comfortable and easy to wear natural style, and particularly cashmere has a good name of " soft gold ", but due to
Price is high, for the production of non-weaving cloth, using few, using the non-weaving cloth of good woool production, is only limitted to acupuncture manufacture
Some few advanced industrial cloth such as woollen blanket, senior Nomex, are generally adopted by undercoat, coarse wool in wool processing, lead to
Cross the products, this kind of sheep such as pad cloth, the sandwich of layers of needle punched carpet, the adiabatic heat insulating material of the methods such as acupuncture, loop bonding production carpet
The length of hair differs, and containing miscellaneous height, spinnability is poor, processes more difficult, and product can be by chemical processing, to improve quality.
In order to increase the utilization of cashmere, with viscose rayon be combined cashmere by modern industry, under certain condition will be certain
The protein hydrolysate stoste of concentration and cellulose (viscose glue) stoste, spinning, and post-treated processing are carried out by certain proportioning mixing
Preferable regenerated protein is made, in the peptide bond (- CO-NH -) among such protein fibre and cellulose-OH shapes
Into hydrogen bond, stronger molecular binding affinities are produced, so that the composite fibre of novel protein is formed, but substantially hydrogen bond still falls within
Molecular separating force, with reference to dynamics not enough, by repeatedly washing, protein is to come off, and relevant hydraulic performance decline is obvious, and for power
Learn for performance, such composite fibre is still less than viscose rayon.
The content of the invention
It is an object of the present invention to provide a kind of cashmere protein cellulose fiber spunlace non-woven cloth and its production method, there is provided high-quality
Containing cashmere (wool) complex fiber material, to solve cashmere (wool) the complex fiber material surface that prior art is produced
The problem of coarse, easy balling-up.
To solve the above problems, the technical scheme that the present invention is provided is：
A kind of cashmere protein cellulose fiber spunlace non-woven cloth, is made up of the fiber of following percentage by weight：5-15%'s
The cotton fiber or synthetic fibers of cashmere albumen, 85-95%, cashmere albumen are grafted on cellulose by silane coupler, fiber
Fiber number be 1.33-1.67dtex.
A kind of production method of cashmere protein cellulose fiber spunlace non-woven cloth, comprises the following steps：
(1) cashmere protein cellulose fiber is prepared：The cashmere albumen that preparation mass fraction is 5-15%, pH value is 11-12
Alkaline aqueous solution, 55-65 DEG C is heated to by cashmere protein solution, silane coupler is added dropwise under agitation, after dripping
System temperature is risen to 100-110 DEG C, cashmere albumen pretreatment fluid is obtained after maintenance reaction 2-3 hours, then drop to room temperature
The ratio for accounting for the 5-15% of first fibre mass ratio in viscose glue according to cashmere albumen afterwards is added in viscose glue, is entered in maturation after being sufficiently mixed
Between bucket, be always maintained at stirring in bucket in the middle of maturation, spinning is directly carried out after maintenance reaction 6-10 hours and obtains wet cashmere egg
White fiber cellulose fiber；
(2) the wet cashmere protein cellulose fiber that step (1) is obtained is carried out mixing combing with cotton fiber or synthetic fibers
Obtain wet non-woven fabrics fiber net；
(3) 360 degree of full dimension spun lacing consolidations are carried out to the wet non-woven fabrics fiber net that step (2) is obtained with clear water, totally 11 road
Spun lacing operation, spun lacing pressure is stepped up into spiral gradient；Last in spun lacing operation is punched skill by high-pressure water-jet together
Art, forms non-woven fabrics cloth cover every square centimeter shapes simultaneously when and is evenly distributed 60 pod apertures；
(4) by spunlace non-woven cloth immigration tunnel drier obtained in step (3), it is in 80~100 DEG C, transmission speed
Under conditions of 0.1~0.5r/min, 2~3h, the aqueous humidity 7.5%-9.5% of final non-woven fabrics are processed.
Further, in step (1), the consumption of silane coupler for cashmere albumen quality than 30-40%, silane is added dropwise
The time of coupling agent is 20-30min.
Yet further, the silane coupler is γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicane or γ-shrink
Glycerine ether oxygen propyl trimethoxy silicane.
The present invention has the following advantages that compared with prior art：
(1) present invention is combined with the preparation process of cashmere protein cellulose fiber, and cashmere albumen in non-woven fabrics contains
Amount is up to 5-15%, and cashmere albumen is connected with cotton fiber with covalent bond, and cashmere albumen turns into of cotton fiber (viscose rayon)
Point, because cashmere albumen is connected with cotton fiber with covalent bond, the original mechanical property of cotton fiber is not influenceed, keeping cellulose fiber
Tie up and assign feel and correlation properties smooth as its cashmere, soft, such cashmere protein fiber on the basis of excellent textile performance
(wool) complex fiber material of cashmere obtained in cellulose fiber surface is smooth, be difficult balling-up；
(2) cashmere albumen is grafted on cellulose with cotton fiber with covalent bond, is existed without free cashmere, every day use mistake
Cheng Zhong, cashmere albumen is without departing from the people to cashmere allergy will not also come to harm；
(3) clear water is used during spun lacing, spun lacing consolidation had both been played, and trip will be adhered to above cashmere protein cellulose fiber
From cashmere rinse out, without washing operation after the completion of spun lacing, only with first drying operate, energy consumption, water consume are low.
(4) it is grafted by cashmere albumen, front end spinning technique and spun lacing process are organically combined, the fiber for obtaining is without drying
It is dry to be directly entered spun lacing step, and spun lacing pretreatment need not be exclusively carried out, integration production substantially reduces technological process,
Technique is simplified, method is easy, be easy to large-scale production.
Specific embodiment
Embodiment 1
Carry out the operation of following steps：
(1) 50L water is pumped into glassed steel reaction vessels, opens and stir, and add the cashmere albumen of 10Kg, dilute hydroxide is added dropwise
System pH is adjusted to 11-12 sodium solution the cashmere protein solution for obtaining fully dissolving, then that cashmere albumen is water-soluble
Liquid is heated to 55-65 DEG C, and 55-65 DEG C of maintenance system temperature in system under agitation in being added dropwise 3.5L in 20~30min
γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicane, 100-110 DEG C, maintenance system temperature are risen to after dripping by system temperature
After the reaction 2.5 hours of 100-110 DEG C of degree cashmere albumen pretreatment fluid is obtained, then drop to and will be prepared with injecting systems after room temperature
Cashmere albumen pretreatment fluid is according to cashmere albumen pretreatment fluid and viscose glue volume ratio 1:10 ratio is added in viscose glue, by static state
Enter after blender mixing in the middle of bucket in the middle of maturation, maturation and be always maintained at stirring in bucket, maintenance reaction is directly entered after 6 hours
Row spinning obtains wet cashmere protein cellulose fiber；
(2) the wet cashmere protein cellulose fiber that step (1) is obtained is carried out mixing combing with cotton fiber or synthetic fibers
Obtain wet non-woven fabrics fiber net；
(3) 360 degree of full dimension spun lacing consolidations are carried out to the wet non-woven fabrics fiber net that step (2) is obtained with clear water, totally 11 road
Spun lacing operation, spun lacing pressure is stepped up into spiral gradient；Last in spun lacing operation is punched skill by high-pressure water-jet together
Art, forms non-woven fabrics cloth cover every square centimeter shapes simultaneously when and is evenly distributed 60 pod apertures；
(4) by spunlace non-woven cloth immigration tunnel drier obtained in step (3), it is in 80~100 DEG C, transmission speed
Under conditions of 0.1~0.5r/min, 2~3h, the aqueous humidity 7.5%-9.5% of final non-woven fabrics are processed.
Final obtained cashmere protein cellulose fiber spunlace non-woven cloth is made up of the fiber of following percentage by weight：
11.56% cashmere albumen, 88.44% cotton fiber or synthetic fibers, wherein cashmere albumen pass through γ-(2,3- the third oxygen of epoxy)
Propyl trimethoxy silicane is grafted on cellulose, and the fiber number of fiber is 1.33dtex.
The present embodiment is grafted by cashmere albumen, front end spinning technique and spun lacing process are organically combined, integration production,
Technological process is substantially reduced, technique is simplified, method is easy, be easy to large-scale production, the compound fibre of obtained cashmere (wool)
Dimension surface of cloth is smooth, be difficult balling-up.
Cashmere protein content is measured using Kjeldahl's method, the items through spunlace non-woven cloth obtained in this case method are specific
Index such as table 1：
The cashmere protein cellulose fiber spunlace non-woven cloth product parameters of table 1
As shown in table 1, spunlace non-woven cloth manufactured in the present embodiment imparts non-woven fabrics on the basis of standard quality is ensured
Smooth, soft characteristic, and cashmere albumen grafted on cellulose with covalent bond, it is stabilization, difficult for drop-off, it is a kind of new
Multifunctional composite, it is adaptable to film cloth base material and garment lining etc..
Embodiment 2
Carry out the operation of following steps：
(1) 50L water is pumped into glassed steel reaction vessels, opens and stir, and add the cashmere albumen of 10Kg, dilute hydroxide is added dropwise
System pH is adjusted to 11-12 sodium solution the cashmere protein solution for obtaining fully dissolving, then that cashmere albumen is water-soluble
Liquid is heated to 55-65 DEG C, and 55-65 DEG C of maintenance system temperature in system under agitation in being added dropwise 3.5L in 20~30min
γ-glycidyl ether oxygen propyl trimethoxy silicane, 100-110 DEG C, maintenance system temperature are risen to after dripping by system temperature
100-110 DEG C of reaction obtains cashmere albumen pretreatment fluid after 2.5 hours, then drops to the sheep that will be prepared with injecting systems after room temperature
Suede albumen pretreatment fluid is according to cashmere albumen pretreatment fluid and viscose glue volume ratio 1:10 ratio is added in viscose glue, mixed by static state
Enter after clutch mixing in the middle of bucket in the middle of maturation, maturation and be always maintained at stirring in bucket, maintenance reaction is directly carried out after 6 hours
Spinning obtains wet cashmere protein cellulose fiber；
(2) the wet cashmere protein cellulose fiber that step (1) is obtained is carried out mixing combing with cotton fiber or synthetic fibers
Obtain wet non-woven fabrics fiber net；
(3) 360 degree of full dimension spun lacing consolidations are carried out to the wet non-woven fabrics fiber net that step (2) is obtained with clear water, totally 11 road
Spun lacing operation, spun lacing pressure is stepped up into spiral gradient；Last in spun lacing operation is punched skill by high-pressure water-jet together
Art, forms non-woven fabrics cloth cover every square centimeter shapes simultaneously when and is evenly distributed 60 pod apertures；
(4) by spunlace non-woven cloth immigration tunnel drier obtained in step (3), it is in 80~100 DEG C, transmission speed
Under conditions of 0.1~0.5r/min, 2~3h, the aqueous humidity 7.5%-9.5% of final non-woven fabrics are processed.
Final obtained cashmere protein cellulose fiber spunlace non-woven cloth is made up of the fiber of following percentage by weight：
11.51% cashmere albumen, 88.49% cotton fiber or synthetic fibers, wherein cashmere albumen pass through γ-glycidyl ether oxygen third
Base trimethoxy silane is grafted on cellulose, and the fiber number of fiber is 1.67dtex.
Embodiment described above only expresses the specific embodiment of the application, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the application protection domain can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, on the premise of technical scheme design is not departed from, various modifications and improvements can be made, these belong to this
The protection domain of application.
Claims (4)
1. a kind of cashmere protein cellulose fiber spunlace non-woven cloth, it is characterised in that be made up of the fiber of following percentage by weight：
The cashmere albumen of 5-15%, the cotton fiber or synthetic fibers of 85-95%, cashmere albumen are grafted on cellulose by silane coupler
On, the fiber number of fiber is 1.33-1.67dtex.
2. a kind of production method of cashmere protein cellulose fiber spunlace non-woven cloth according to claim 1, its feature exists
In comprising the following steps：
(1) cashmere protein cellulose fiber is prepared：Preparation mass fraction is 5-15%, pH value for the cashmere albumen of 11-12 is alkaline
The aqueous solution, 55-65 DEG C is heated to by cashmere protein solution, and silane coupler is added dropwise under agitation, by body after dripping
Be that temperature rises to 100-110 DEG C, cashmere albumen pretreatment fluid obtained after maintenance reaction 2-3 hours, then drop to after room temperature by
The ratio for accounting for the 5-15% of first fibre mass ratio in viscose glue according to cashmere albumen is added in viscose glue, is entered in the middle of maturation after being sufficiently mixed
Stirring is always maintained in bucket in the middle of bucket, maturation, spinning is directly carried out after maintenance reaction 6-10 hours and is obtained wet cashmere albumen
Cellulose fibre；
(2) the wet cashmere protein cellulose fiber for obtaining step (1) and cotton fiber or synthetic fibers are carried out mixing combing and obtained
Wet non-woven fabrics fiber net；
(3) 360 degree of full dimension spun lacing consolidations are carried out to the wet non-woven fabrics fiber net that step (2) is obtained with clear water, totally 11 road spun lacing
Operation, spun lacing pressure is stepped up into spiral gradient；In the last together by high-pressure water-jet cheesing techniques, shape of spun lacing operation
60 pod apertures are evenly distributed when being shaped into non-woven fabrics cloth cover every square centimeter simultaneously；
(4) by obtained in step (3) spunlace non-woven cloth move into tunnel drier in, 80~100 DEG C, transmission speed be 0.1
Under conditions of~0.5r/min, 2~3h, the aqueous humidity 7.5%-9.5% of final non-woven fabrics are processed.
3. a kind of production method of cashmere protein cellulose fiber spunlace non-woven cloth as claimed in claim 2, it is characterised in that
In step (1), the consumption of silane coupler for cashmere albumen quality than 30-40%, the time that silane coupler is added dropwise is 20-
30min。
4. a kind of production method of the cashmere protein cellulose fiber spunlace non-woven cloth according to Claims 2 or 3, its feature
It is that the silane coupler is γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicane or γ-glycidyl ether oxygen propyl three
Methoxy silane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611163223.5A CN106835492B (en) | 2016-12-15 | 2016-12-15 | A kind of production method of cashmere protein cellulose fiber spunlace non-woven cloth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163223.5A CN106835492B (en) | 2016-12-15 | 2016-12-15 | A kind of production method of cashmere protein cellulose fiber spunlace non-woven cloth |
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| CN106835492A true CN106835492A (en) | 2017-06-13 |
| CN106835492B CN106835492B (en) | 2019-07-16 |
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| CN1896358A (en) * | 2005-07-12 | 2007-01-17 | 欣龙控股（集团）股份有限公司 | Woolen fibre water-penetrated non-fabric sanitary material and its production |
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| CN101298708A (en) * | 2008-06-25 | 2008-11-05 | 宜宾丝丽雅集团有限公司 | Protein cellulose viscose and preparing method thereof |
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|---|---|---|---|---|
| DE102004030393A1 (en) * | 2004-06-23 | 2006-01-26 | Carl Freudenberg Kg | Production of 3-dimensional molded fleece, used as thermal insulation or reinforcement, involves molding mechanically consolidated fleece in z-direction by treating one side with high-pressure fluid jets on small-mesh perforated screen |
| US20120272465A1 (en) * | 2004-12-22 | 2012-11-01 | Jonathan Paul Brennan | Pre-moistened nonwoven webs with visible compressed sites |
| CN1896358A (en) * | 2005-07-12 | 2007-01-17 | 欣龙控股（集团）股份有限公司 | Woolen fibre water-penetrated non-fabric sanitary material and its production |
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| CN101298708A (en) * | 2008-06-25 | 2008-11-05 | 宜宾丝丽雅集团有限公司 | Protein cellulose viscose and preparing method thereof |
| CN102586919A (en) * | 2012-03-07 | 2012-07-18 | 江苏金太阳纺织科技有限公司 | Dimensionality-stable regenerated cellulose fiber and preparation method thereof |
| CN104005114A (en) * | 2014-05-05 | 2014-08-27 | 江苏金太阳布业有限公司 | Preparation method for wool keratin regenerated cellulose fiber |
| CN105803673A (en) * | 2016-05-24 | 2016-07-27 | 江苏东方洁妮尔水刺无纺布有限公司 | Tea polyphenol cellulose fiber spun-laced nonwoven fabric and production process thereof |
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| CN106835492B (en) | 2019-07-16 |
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