CN102191579B - Coffee viscose fiber and preparation method thereof - Google Patents
Coffee viscose fiber and preparation method thereof Download PDFInfo
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- CN102191579B CN102191579B CN2011101423974A CN201110142397A CN102191579B CN 102191579 B CN102191579 B CN 102191579B CN 2011101423974 A CN2011101423974 A CN 2011101423974A CN 201110142397 A CN201110142397 A CN 201110142397A CN 102191579 B CN102191579 B CN 102191579B
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- 229920000297 Rayon Polymers 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000835 fiber Substances 0.000 title abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 23
- 238000009987 spinning Methods 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- 230000001112 coagulating effect Effects 0.000 claims abstract description 11
- 229920002678 cellulose Polymers 0.000 claims abstract description 9
- 239000001913 cellulose Substances 0.000 claims abstract description 9
- 229920000742 Cotton Polymers 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- 238000007598 dipping method Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000007670 refining Methods 0.000 claims abstract description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 241000209094 Oryza Species 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- WQSRXNAKUYIVET-UHFFFAOYSA-N sulfuric acid;zinc Chemical compound [Zn].OS(O)(=O)=O WQSRXNAKUYIVET-UHFFFAOYSA-N 0.000 claims description 5
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 5
- 229960001763 zinc sulfate Drugs 0.000 claims description 5
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000003115 biocidal effect Effects 0.000 abstract description 6
- 239000004753 textile Substances 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000000227 grinding Methods 0.000 abstract description 2
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 239000011550 stock solution Substances 0.000 abstract 2
- 230000032683 aging Effects 0.000 abstract 1
- 239000013058 crude material Substances 0.000 abstract 1
- 238000004332 deodorization Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000007380 fibre production Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 238000004383 yellowing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 210000004243 sweat Anatomy 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 229920000875 Dissolving pulp Polymers 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- RYYVLZVUVIJVGH-UHFFFAOYSA-N caffeine Chemical compound CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 230000003578 releasing effect Effects 0.000 description 2
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- 206010010904 Convulsion Diseases 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- LPHGQDQBBGAPDZ-UHFFFAOYSA-N Isocaffeine Natural products CN1C(=O)N(C)C(=O)C2=C1N(C)C=N2 LPHGQDQBBGAPDZ-UHFFFAOYSA-N 0.000 description 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 229930003270 Vitamin B Natural products 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229960001948 caffeine Drugs 0.000 description 1
- VJEONQKOZGKCAK-UHFFFAOYSA-N caffeine Natural products CN1C(=O)N(C)C(=O)C2=C1C=CN2C VJEONQKOZGKCAK-UHFFFAOYSA-N 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- -1 free fatty Natural products 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 210000004798 organs belonging to the digestive system Anatomy 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 230000003867 tiredness Effects 0.000 description 1
- 208000016255 tiredness Diseases 0.000 description 1
- 235000019156 vitamin B Nutrition 0.000 description 1
- 239000011720 vitamin B Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Artificial Filaments (AREA)
Abstract
The invention relates to coffee viscose fiber, which is prepared by crude materials including cotton pulp and coffee residue, wherein the content of the coffee residue accounts for 10 to 30 wt% of cellulose. A preparation method of the coffee viscose fiber comprises the following steps: taking pulp as a crude material for staple fiber production; performing processes including dipping, squeezing, crushing, aging, yellowing, dissolving, defoaming, and filtering so as to obtain a viscose solution; grinding coffee residue into powder and dispersing the powder into an aqueous solution to obtain a slurry; adding the slurry into the viscose solution to obtain a spinning viscose stock solution, wherein the addition amount of the coffee residue accounts for 10 to 30% by weight of the cellulose of the viscose solution; and carrying out spinning and molding on the prepared spinning viscose stock solution in a coagulating bath, and performing processes of drafting, refining, and drying to obtain a finished product of the coffee viscose fiber. According to the invention, the coffee residue, which is distributed evenly in the fiber, is not easy to be lost, so that the antibiotic and odor resistant functions of the coffee residue are lasting. The coffee viscose fiber not only has functions of bacteriostasis, deodorization, and moisture absorption and perspiration, but also has characteristics of moisture absorption and air permeability as well as comfortable wearing property of the viscose fiber. Textiles made from the coffee viscose fibers have a good moisture adsorption performance and a good moisture regain rate as well as have characteristics of comfortable hand feeling and softness and dryness.
Description
Technical field
The present invention relates to a kind of viscose and manufacturing approach thereof, specifically, relate to a kind of coffee viscose staple fibre and production technology thereof.
Background technology
As a kind of drink, coffee is come in the middle of modern's the life gradually, has been the daily drink of much human, and coffee has the raising heart body, and the effect of distending the blood vessels, blood circulation are good, and headache is calmed down, and spirit is happy.Coffee contains the certain nutrition composition like vitamin B, free fatty, caffeine, tannic acid etc.Coffee is to the skin beneficiating place, and coffee can promote metabolism, active digestive organs, allaying tiredness.Aspect health care, coffee has anti-oxidant and protects the heart, strengthening the bones and muscles, sharp waist knee, the short food of appetizing, the fat that disappears long-pending, the sharp key that disappears and dehumidify, activate blood circulation and disperse blood clots, cease wind and end effects such as convulsion, more than is the effect of coffee for drinking that present people recognize.The a large amount of residues that in milling processing coffee process, produce, and coffee grounds has the peculiar smell in the absorbed air, absorbs the effect that water in air is divided, and coffee grounds is abandoned as rubbish, has caused the waste of resource.
Summary of the invention
Technical problem to be solved by this invention is to above problem, and a kind of coffee viscose with antibacterial, deodorizing, moisture absorbing and sweat releasing effect and preparation method thereof is provided.
For overcoming the above problems, the technical scheme that the present invention adopts is: the coffee viscose is characterized in that: use the cotton pulp dregs of rice and coffee grounds to form as feedstock production, the content of coffee grounds is 10～30% of cellulose.
Further improvement as technique scheme:
The dried fracture strength 2.07～2.23cN/dtex of said coffee viscose, wet breaking strength 1.13～1.25cN/dtex, line density deviation-1.30～1.63%, antibiotic property 96～99%.
The preparation method of coffee viscose may further comprise the steps:
(1) chooses short silk and produce with pulp,, make viscose solution through dipping, squeezing, pulverizing, experienced, yellow, dissolving, deaeration, filtration operation as raw material;
(2) with the coffee grounds grind into powder, particle diameter is dispersed in the aqueous solution below 2 microns; Obtain slurry, slurry is evenly joined in the viscose solution, fully mix; Make spinning viscose glue stoste, the addition of coffee grounds accounts for 10～30% of cellulose in the viscose solution;
(3) with the spinning viscose glue stoste spinning moulding in coagulating bath that makes, make finished product coffee viscose through drawing-off, refining, baking operation again.
In the step (1), the fine mass percentage content of first is 8～10% in the said viscose solution.
In the step (3), said coagulating bath is the aqueous solution of sulfuric acid, zinc sulfate and sodium sulphate, 40～50 ℃ of temperature.
The concentration of said sulfuric acid is that the concentration of 105～115g/l, sodium sulphate is that 320～360g/l, sulfuric acid zinc concentration are 30～40g/l.
The present invention adopts above technical scheme, has the following advantages: utilize spent coffee to prepare the coffee viscose, green, environmental protection; The dried fracture strength 2.07～2.23cN/dtex of gained coffee viscose, wet breaking strength 1.13～1.25cN/dtex, line density deviation-1.30～1.63%; Antibiotic property 96～99%; Coffee grounds is evenly distributed on fibrous inside, is difficult for running off, and anti-bacterial anti-foul function is lasting.Effects such as that the coffee viscose not only has is antibacterial, deodorizing, moisture absorbing and sweat releasing also have the viscose moisture absorption to breathe freely, take comfortable characteristic, and its textiles has good moisture absorption regain; Comfortable feel; Soft dry and comfortable, can be widely used in household textiles, underwear; Sweat shirt, clothes next to the shin such as nightwear.
Through embodiment the present invention is elaborated below.
The specific embodiment
Embodiment 1, and coffee viscose and preparation method thereof may further comprise the steps:
(1) choose short silk and produce with the cotton pulp dregs of rice as raw material, through dipping, squeezing, pulverizing, experienced, yellow, dissolving, deaeration, filtration operation, make viscose solution, first fibre content is 8% in the viscose solution;
(2) with the coffee grounds grind into powder, with the spherical grinding machine coffee grounds is ground 2-4h down at 40-60 ℃, make the coffee grounds particle diameter below 2 microns; Stir and be dispersed in the aqueous solution; Obtain slurry, slurry is evenly joined in the viscose solution, fully mix; Make spinning viscose glue stoste, the addition of coffee grounds accounts for 10% of cellulose in the viscose solution;
(3) with the spinning viscose glue stoste spinning moulding in coagulating bath that makes; Make finished product coffee viscose through drawing-off, refining, baking operation again; Coagulating bath is the aqueous solution of sulfuric acid, zinc sulfate and sodium sulphate; The concentration of sulfuric acid is that 115g/L, sulfuric acid zinc concentration are that the concentration of 30g/L and sodium sulphate is 360g/L, and temperature is 40 ℃.
Touch the textiles that the coffee viscose is processed with hand, comfortable feel, soft dry and comfortable.
ATCC100 detects according to standard A; The index of gained finished product coffee viscose: dried fracture strength is 2.23cN/dtex, and wet breaking strength is 1.25cN/dtex, and dried elongation at break is 18.9%; The line density deviation ratio is 1.63%; Oil content is 0.21%, and regain is 11.0%, antibiotic property 96%.
Embodiment 2, and coffee viscose and preparation method thereof may further comprise the steps:
(1) choose short silk and produce with the cotton pulp dregs of rice as raw material, through dipping, squeezing, pulverizing, experienced, yellow, dissolving, deaeration, filtration operation, make viscose solution, first fibre content is 9% in the viscose solution;
(2) with the coffee grounds grind into powder, particle diameter is dispersed in the aqueous solution below 2 microns; Obtain slurry, slurry is evenly joined in the viscose solution, fully mix; Make spinning viscose glue stoste, the addition of coffee grounds accounts for 20% of cellulose in the viscose solution;
(3) with the spinning viscose glue stoste spinning moulding in coagulating bath that makes; Make finished product coffee viscose through drawing-off, refining, baking operation again; Coagulating bath is the aqueous solution of sulfuric acid, zinc sulfate and sodium sulphate; The concentration of sulfuric acid is that 110g/L, sulfuric acid zinc concentration are that the concentration of 35g/L and sodium sulphate is 330g/L, and temperature is 45 ℃.
Touch the textiles that the coffee viscose is processed with hand, comfortable feel, soft dry and comfortable.
ATCC100 detects according to standard A; The index of gained finished product coffee viscose finished product: dried fracture strength is 2.15cN/dtex, and wet breaking strength is 1.20cN/dtex, and dried elongation at break is 19.5%; The line density deviation ratio is 0.83%; Oil content is 0.19%, and regain is 10.8%, antibiotic property 98%.
Embodiment 3, and coffee viscose and preparation method thereof may further comprise the steps:
(1) choose short silk and produce with the cotton pulp dregs of rice as raw material, through dipping, squeezing, pulverizing, experienced, yellow, dissolving, deaeration, filtration operation, make viscose solution, first fibre content is 10% in the viscose solution;
(2) with the coffee grounds grind into powder, particle diameter is dispersed in the aqueous solution below 2 microns; Obtain slurry, slurry is evenly joined in the viscose solution, fully mix; Make spinning viscose glue stoste, the addition of coffee grounds accounts for 30% of cellulose in the viscose solution;
(3) with the spinning viscose glue stoste spinning moulding in coagulating bath that makes; Make finished product coffee viscose through drawing-off, refining, baking operation again; Coagulating bath is the aqueous solution of sulfuric acid, zinc sulfate and sodium sulphate; The concentration of sulfuric acid is that 105g/L, sulfuric acid zinc concentration are that the concentration of 40g/L and sodium sulphate is 320g/L, and temperature is 50 ℃.
Touch the textiles that the coffee viscose is processed with hand, comfortable feel, soft dry and comfortable.
ATCC100 detects according to standard A; The index of gained finished product coffee viscose finished product: dried fracture strength is 2.07cN/dtex, and wet breaking strength is 1.13cN/dtex, and dried elongation at break is 20.0%; The line density deviation ratio is-1.30%; Oil content is 0.26%, and regain is 11.4%, antibiotic property 99%.
Above pulp can also be used wood pulps, hemp dissolving pulp, bamboo pulp, or the combination in any in the cotton pulp dregs of rice, wood pulps, hemp dissolving pulp, bamboo pulp.
Claims (6)
1. coffee viscose, it is characterized in that: use the cotton pulp dregs of rice and coffee grounds to form as feedstock production, the content of coffee grounds is 10～30% of cellulose.
2. coffee viscose as claimed in claim 1 is characterized in that: the dried fracture strength 2.07～2.23cN/dtex of said coffee viscose, wet breaking strength 1.13～1.25cN/dtex, line density deviation-1.30～1.63%.
3. the preparation method of coffee viscose according to claim 1 or claim 2 is characterized in that: may further comprise the steps:
(1) chooses short silk and produce with the cotton pulp dregs of rice,, make viscose solution through dipping, squeezing, pulverizing, experienced, yellow, dissolving, deaeration and filtration operation as raw material;
(2) with the coffee grounds grind into powder, particle diameter is dispersed in the aqueous solution below 2 microns; Obtain slurry, slurry is evenly joined in the viscose solution, fully mix; Make spinning viscose glue stoste, the addition of coffee grounds accounts for 10～30% of cellulose in the viscose solution;
(3) with the spinning viscose glue stoste spinning moulding in coagulating bath that makes, make finished product coffee viscose through drawing-off, refining and baking operation again.
4. like the preparation method of the said coffee viscose of claim 3, it is characterized in that: in the step (1), the fine mass percentage content of first is 8～10% in the said viscose solution.
5. like the preparation method of the said coffee viscose of claim 3, it is characterized in that: in the step (3), said coagulating bath is the aqueous solution of sulfuric acid, zinc sulfate and sodium sulphate, 40～50 ℃ of temperature.
6. like the preparation method of the said coffee viscose of claim 5, it is characterized in that: the concentration of said sulfuric acid is that the concentration of 105～115g/l, sodium sulphate is that 320～360g/l, sulfuric acid zinc concentration are 30～40g/l.
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| CN2011101423974A CN102191579B (en) | 2011-05-30 | 2011-05-30 | Coffee viscose fiber and preparation method thereof |
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| CN2011101423974A CN102191579B (en) | 2011-05-30 | 2011-05-30 | Coffee viscose fiber and preparation method thereof |
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| CN102191579B true CN102191579B (en) | 2012-07-18 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103099324A (en) * | 2011-11-11 | 2013-05-15 | 上海欧迪芬内衣精品股份有限公司 | Coffee fiber bra cups |
| IL218083A0 (en) | 2012-02-13 | 2012-03-29 | Nilit Ltd | Polyamide fabric enhancing body warming |
| CN103215753B (en) * | 2013-03-26 | 2016-01-13 | 聚隆纤维股份有限公司 | There is the method for making of deodorization functions bamboo pulp fiber element Nonwovens |
| TWI632261B (en) * | 2013-03-26 | 2018-08-11 | 聚泰環保材料科技股份有限公司 | Method for preparing bamboo cellulose fiber with natural antibacterial, deodorizing and negative ion functions |
| CN103215678B (en) * | 2013-03-26 | 2016-03-30 | 聚隆纤维股份有限公司 | There is the method for making of natural antibacterial, deodorizing and anion function bamboo cellulose fibre |
| TWI619863B (en) * | 2013-03-26 | 2018-04-01 | Method for preparing bamboo pulp cellulose non-woven fabric with deodorizing function | |
| TWI641734B (en) * | 2015-01-26 | 2018-11-21 | 聚泰環保材料科技股份有限公司 | Method for preparing bamboo pulp cellulose non-woven fabric with deodorizing function by spunbonding method |
| CN106087093A (en) * | 2016-06-07 | 2016-11-09 | 联润翔（青岛）纺织科技有限公司 | Lin's grass viscose rayon and preparation method thereof |
| TWI695015B (en) * | 2018-12-27 | 2020-06-01 | 財團法人工業技術研究院 | METHOD FOR PREPARING α-CELLULOSE, SPINNING COMPOSITION, AND FIBER MATERIAL |
| CN113417023A (en) * | 2021-04-02 | 2021-09-21 | 百事基材料（青岛）股份有限公司 | Viscose macrobio-fiber containing coffee active ingredients and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100035032A (en) * | 2008-09-25 | 2010-04-02 | 이홍구 | Method for producing pla fiber using the grounds of coffee |
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| EP2093314A2 (en) * | 2008-02-20 | 2009-08-26 | Magictex Apparel Corporation | Yarns with coffee residue and preparation thereof |
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