CN101580970A - Preparation method for hemp pulp and prepared hemp pulp - Google Patents
Preparation method for hemp pulp and prepared hemp pulp Download PDFInfo
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- CN101580970A CN101580970A CNA2009100159905A CN200910015990A CN101580970A CN 101580970 A CN101580970 A CN 101580970A CN A2009100159905 A CNA2009100159905 A CN A2009100159905A CN 200910015990 A CN200910015990 A CN 200910015990A CN 101580970 A CN101580970 A CN 101580970A
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- jute
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- dissolving pulp
- quality
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- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 40
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 title claims abstract description 40
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 title claims abstract description 40
- 235000009120 camo Nutrition 0.000 title claims abstract description 40
- 235000005607 chanvre indien Nutrition 0.000 title claims abstract description 40
- 239000011487 hemp Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 240000000491 Corchorus aestuans Species 0.000 claims abstract description 55
- 235000011777 Corchorus aestuans Nutrition 0.000 claims abstract description 55
- 235000010862 Corchorus capsularis Nutrition 0.000 claims abstract description 55
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000001301 oxygen Substances 0.000 claims abstract description 31
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims abstract description 27
- 238000004061 bleaching Methods 0.000 claims abstract description 26
- 238000009874 alkali refining Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 238000010009 beating Methods 0.000 claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 34
- 229920000875 Dissolving pulp Polymers 0.000 claims description 33
- 239000002002 slurry Substances 0.000 claims description 24
- 238000009835 boiling Methods 0.000 claims description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 12
- 238000010411 cooking Methods 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 229920000297 Rayon Polymers 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract 1
- 238000007380 fibre production Methods 0.000 abstract 1
- 229920005610 lignin Polymers 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 13
- 239000000835 fiber Substances 0.000 description 10
- 239000004753 textile Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 4
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 4
- 241000722949 Apocynum Species 0.000 description 3
- 240000008564 Boehmeria nivea Species 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 description 2
- 240000006240 Linum usitatissimum Species 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 240000006995 Abutilon theophrasti Species 0.000 description 1
- 244000198134 Agave sisalana Species 0.000 description 1
- 235000011624 Agave sisalana Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000222122 Candida albicans Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000218231 Moraceae Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 229940095731 candida albicans Drugs 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Abstract
The present invention discloses a method for producing hemp pulp with jute. The preparation method comprises the following steps: adopting the jute which has rich resource as the raw material, carrying out material preparation, stewing, beating, pre-separating and deslagging, condensing, eliminating lignin with oxygen, alkali refining, bleaching, after-separating and deslagging, condensing, compressing, drying, cutting-off, packaging and the like, and obtaining the finished product of hemp pulp. The preparation method of the invention has the advantages of simple process and low material consumption. Furthermore, the quality index of the prepared hemp pulp is in accordance with the requirement of viscose fiber production.
Description
Technical field
The present invention relates to the chemical fibre technology in a kind of field of textiles, relate to especially that a kind of to adopt jute be the method for feedstock production hemp dissolving pulp and the hemp dissolving pulp that adopts the preparation of this method.
Background technology
Viscose is as a kind of textile raw material; owing to have characteristics such as quality is slim and graceful, smooth, soft, comfortable; be well received by consumers; its traditional production method is to adopt cotton linter, timber etc. to produce for raw material; but current minimizing along with sown areas of cotton; reach country the forest conservation policy implementation is got more and more strictness, viscose glue raw material cotton linter, timber problem of shortage highlight just year by year.
China's crudefiber crop aboundresources, great variety of goods has the almost all main crudefiber crops in the world.The main bast fiber crop of cultivation has ramie, flax, hemp, bluish dogbane (former title mestha), jute, piemarker.Producing the crudefiber crop that goes up main plantation at present has ramie, jute, bluish dogbane, flax, hemp and sisal hemp etc., and cultivated area is 1,500 ten thousand mu to 2,500 ten thousand mu throughout the year.Wherein bluish dogbane, jute 400-500 are ten thousand mu, and resource is very abundant.
The fiber crops material is commonly called as " fire fiber crops ", is the annual herb plant of Moraceae, male and female plant division.The original producton location is at the middle part, Asia.The fiber crops assortment is planted easy, and growth is rapid, and adaptability is strong, the general high 2-3 rice of stem, and 1 year one receipts, it does not use any agricultural chemicals in plantation and growth course, be a kind of green product.Filamentary fineness is 1/3rd of a ramie in the jute, approaches cotton fiber, and fiber ends is blunt round, and therefore the textiles that adopts tossa to be formed by weaving is soft fit, need not special the processing and just can avoid its prodding and itching feeling and coarse hard sense.And tossa not only especially jewelry, expensive clothing and other valuables but also fibrillar center bigger cavity is arranged, link to each other with small holes with many cracks that fiber surface is vertically distributing, so its excellent capillarity makes tossa absorbing sweat hydrofuge performance bins outer good.And the cross section of tossa is the sealene triangle of hollow, polygon, oval type etc., its molecular structure is many ribs shape, and is looser, and spiral is arranged, therefore the tossa goods have good dissipation role to sound wave, light wave, and the ultraviolet ray in its maskable external world is to the injury of human body.The hygroscopicity of tossa is also good especially, and regain can reach about 12%, and its goods can be avoided electrostatic accumulation easily, has avoided the discharge and the pilling effect that cause because of clothing swing friction.And tossa has good heat resistance, so the relatively suitable Work Clothes of makeing sun-proof clothes, parasol and various special requirements of jute textile product and interior decoration cloth etc.And tossa also has the anti-mildew bacteria resistance function, and the jute textiles all has tangible killing action to staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Candida albicans etc.Therefore adopting jute is that people solve viscose glue a kind of valid approach that there is lack of raw materials for the raw material production viscose, but current people are that the method for raw material production viscose is also few with the jute, and it all is not unusual ideal that some that adopt current existence are utilized on the performances such as whiteness, intensity and elongate fiber of the viscose that jute produces for the process of raw material production viscose, does not reach production target; And its technology is also comparatively complicated, and the supplies consumption in the production is bigger, and this has influenced the utilization of people to jute, has also influenced the production and the quality of viscose to a certain extent.
Summary of the invention
It is the method for feedstock production hemp dissolving pulp with the jute that technical problem to be solved by this invention has provided a kind of, adopt this preparation method to utilize jute to produce hemp dissolving pulp, technology is simple, and supplies consumption is low, and the quality index of the hemp dissolving pulp of producing satisfies the needs that viscose is produced.
The invention provides a kind of method of utilizing jute to produce hemp dissolving pulp, for adopting the abundant jute in source is raw material, through PROCESS FOR TREATMENT such as boiling, bleachings, production stage comprises that production stage is got the raw materials ready, boiling, making beating, preceding selected slagging-off, concentrate, oxygen delignification, alkali refining, bleaching, the selected slagging-off in back, concentrate, squeezing, oven dry, cut-out, packing etc. make the hemp dissolving pulp finished product.
Its boiling is adopted in 15%～30% of the relative over dry jute of NaOH raw materials quality, liquor ratio is 1: 2.5～6, the cooking liquor sulphidity is 15%～30%, 0.05%～1.0% of the relative over dry jute of the green oxygen of digesting assistant raw materials quality, 40～80 minutes heating-up times, 165～178 ℃ of boiling maximum temperatures, temperature retention time 150～210 minutes.
Pull an oar after the boiling, making beating slurry volume concentration is 5%～10%, and beating time is 20～60 minutes, no little slurry group in the slurry.
Described oxygen delignification adopts with 2%～10% of the relative over dry jute of oxymeter quality, oxygen pressure 0.6 ± 0.05Mpa, and the oxygen delignification time is 30～60 minutes.
Described alkali refining adopts in 18% ± 0.05% of the relative over dry jute of NaOH quality, and the alkali refining temperature is 98 ± 1 ℃, and the alkali refining time is 30～60 minutes.
Described bleaching is adopted in 5%～20% of the relative over dry jute of hydrogen peroxide quality, and bleaching temperature is 60 ± 5 ℃, and bleaching time is 30～90 minutes.
Adopt said method production the hemp dissolving pulp quality be alpha cellulose mass content 〉=91%, ash content mass content≤0.1%, iron branch≤30mg/kg, whiteness 〉=72%, the degree of polymerization 500 ± 30, little dust≤240mm
2/ kg, big dust≤1.0/kg.
Adopt this kind technology utilization jute to produce hemp dissolving pulp, not only solved and currently utilized jute can't make the high-grade clothes and the problem of textiles, and technology is simple, supplies consumption is low, and utilize the quality height of the viscose of hemp dissolving pulp production, have performances such as good whiteness, intensity and elongate fiber.
In the preparation of hemp dissolving pulp, adopt the technology of this area routine, jute is cut off, screening, clean, procedures for preparation such as removal of impurities, to obtain meeting the raw materials for production of working condition, carry out boiling then, wash material, making beating, desanding, bleaching, washing, copy processing such as slurry and make hemp dissolving pulp, in the operation of producing hemp dissolving pulp, according to the needs in producing, slurry after the boiling is washed material, the production treatment process of routines in the art such as making beating back and desanding is beneficial to slurry is bleached, slurry after the bleaching is washed, copy slurry and wait the use of the jute pulp that the production treatment process of routine in the art is beneficial to make, and can carry out desanding to the slurry after the bleaching, operation such as concentrate, with the control pulp quality.
Aborning, the cut-out equipment that the equipment that is adopted adopts when getting the raw materials ready, beater when the boiling vessel in the boiling, making beating, the potcher in the bleaching, and the equipment that desander, pulp machine etc. are used in process of production is current people applied equipment in actual production, there is no special feature; And the various raw materials of using in the production technology also are that people use always in daily production.
Among the present invention, adopted above-mentioned production technology and operation to handle jute and produced hemp dissolving pulp, the feasible production that can finish hemp dissolving pulp in the present invention with less supplies consumption, not only technology is simple, is convenient to use in the production operation of reality.
The specific embodiment
Embodiment 1
At first get the raw materials ready, handle after adopting cut-out equipment that jute is cut off, and through screening, clean, preliminary treatment work such as removal of impurities, produce the jute raw material that needs with the selector symphysis, in boiling vessel, it is carried out boiling afterwards, it is 30% that conditions of cooking adopts in the relative over dry jute of NaOH quality, is to carry out dosing at 1: 6 by liquor ratio, and the cooking liquor sulphidity is 30%, 1.0% of the relative over dry jute of the green oxygen of digesting assistant raw materials quality, in 40 minutes, be warmed up to 165 ℃, and the insulation be 180 minutes, bleed off raffinate after the boiling, slurry after the boiling washed wash material, reach and meet production requirement, can pull an oar to it in beater, beating consistency is controlled between 5%, pulled an oar 60 minutes, no little slurry group carries out desanding in the slurry that require to obtain in desander, to remove impurity in the slurry and tiny fiber;
Slurry takes off tower at oxygen and carries out oxygen delignification, adopts with 10% of the relative over dry jute of oxymeter quality, and oxygen pressure is 0.6Mpa, and the oxygen delignification time is 30 minutes; Carry out alkali refining at the alkali refining tower then, adopt in 17.5% of the relative over dry jute of NaOH quality, the alkali refining temperature is 98 ℃, and the alkali refining time is 60 minutes; Bleach at the hydrogen peroxide bleaching tower at last, adopt in 20% of the relative over dry jute of hydrogen peroxide quality, bleaching temperature is 55 ℃, and bleaching time is 45 minutes.Bleed off raffinate after the bleaching and can wash, copy the pulp that operation such as slurry obtains being used to produce hemp dissolving pulp it.
Adopt the quality index of the hemp dissolving pulp that the foregoing description obtained to be: the alpha cellulose mass content: 92%, the ash content mass content: 0.09%, iron branch: 25mg/kg, whiteness: 75%, the degree of polymerization 515, little dust: 195mm
2/ kg, big dust: 1.0/kg.
Embodiment 2
The processing step that present embodiment adopted is consistent with embodiment 1, just in technology carry out boiling the time NaOH relative over dry jute quality be 25%, liquor ratio is 1: 5, the cooking liquor sulphidity is 25%, 0.1% of the relative over dry jute of the green oxygen of digesting assistant raw materials quality, be warmed up to 175 ℃ in 60 minutes, and be incubated 150 minutes;
Beating consistency was pulled an oar 45 minutes between 8%;
Slurry takes off tower at oxygen and carries out oxygen delignification, adopts with 8% of the relative over dry jute of oxymeter quality, and oxygen pressure is 0.6Mpa, and the oxygen delignification time is 40 minutes; Carry out alkali refining at the alkali refining tower then, adopt in 17.5% of the relative over dry jute of NaOH quality, the alkali refining temperature is 99 ℃, and the alkali refining time is 50 minutes; Bleach at the hydrogen peroxide bleaching tower at last, adopt in 15% of the relative over dry jute of hydrogen peroxide quality, bleaching temperature is 60 ℃, and bleaching time is 50 minutes.Bleed off raffinate after the bleaching and can wash, copy the pulp that operation such as slurry obtains being used to produce hemp dissolving pulp it.
Adopt the quality index of the hemp dissolving pulp that the foregoing description obtained to be: the alpha cellulose mass content: 92.1%, the ash content mass content: 0.08%, iron branch: 23mg/kg, whiteness: 76%, the degree of polymerization 523, little dust: 186mm
2/ kg, big dust: 0.9/kg.
Embodiment 3
The processing step that present embodiment adopted is consistent with embodiment 1, just in technology carry out boiling the time NaOH relative over dry jute quality be 20%, liquor ratio is 1: 4, the cooking liquor sulphidity is 20%, 0.5% of the relative over dry jute of the green oxygen of digesting assistant raw materials quality, be warmed up to 178 ℃ in 80 minutes, and be incubated 210 minutes;
Beating consistency was pulled an oar 30 minutes between 10%;
Slurry takes off tower at oxygen and carries out oxygen delignification, adopts with 6% of the relative over dry jute of oxymeter quality, and oxygen pressure is 0.65Mpa, and the oxygen delignification time is 50 minutes; Carry out alkali refining at the alkali refining tower then, adopt in 17.5% of the relative over dry jute of NaOH quality, the alkali refining temperature is 99 ℃, and the alkali refining time is 55 minutes; Bleach at the hydrogen peroxide bleaching tower at last, adopt in 12% of the relative over dry jute of hydrogen peroxide quality, bleaching temperature is 62 ℃, and bleaching time is 55 minutes.Bleed off raffinate after the bleaching and can wash, copy the pulp that operation such as slurry obtains being used to produce hemp dissolving pulp it.
Adopt the quality index of the hemp dissolving pulp that the foregoing description obtained to be: the alpha cellulose mass content: 93.2%, the ash content mass content: 0.09%, iron branch: 28mg/kg, whiteness: 74%, the degree of polymerization 501, little dust: 159mm
2/ kg, big dust: 1.0/kg.
Embodiment 4
The processing step that present embodiment adopted is consistent with embodiment 1, just in technology carry out boiling the time NaOH relative over dry jute quality be 18.5%, liquor ratio is 1: 3, the cooking liquor sulphidity is 15%, 0.05% of the relative over dry jute of the green oxygen of digesting assistant raw materials quality, be warmed up to 176 ℃ in 60 minutes, and be incubated 180 minutes;
Beating consistency was pulled an oar 50 minutes between 7%;
Slurry takes off tower at oxygen and carries out oxygen delignification, adopts with 2% of the relative over dry jute of oxymeter quality, and oxygen pressure is 0.65Mpa, and the oxygen delignification time is 60 minutes; Carry out alkali refining at the alkali refining tower then, adopt in 18.5% of the relative over dry jute of Na0H quality, the alkali refining temperature is 99 ℃, and the alkali refining time is 60 minutes; Bleach at the hydrogen peroxide bleaching tower at last, adopt in 5% of the relative over dry jute of hydrogen peroxide quality, bleaching temperature is 65 ℃, and bleaching time is 60 minutes.Bleed off raffinate after the bleaching and can wash, copy the pulp that operation such as slurry obtains being used to produce hemp dissolving pulp it.
Adopt the quality index of the hemp dissolving pulp that the foregoing description obtained to be: the alpha cellulose mass content: 92.5%, the ash content mass content: 0.07%, iron branch: 19mg/kg, whiteness: 73%, the degree of polymerization 495, little dust: 210mm
2/ kg, big dust: 0.8/kg.
More than be the application's a specific embodiment, should be understood that these embodiment only are used to the present invention is described and are not used in to limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (6)
1, the preparation method of hemp dissolving pulp, manufacture hemp dissolving pulp for adopting jute, comprise production stage boiling, preceding selected slagging-off, oxygen delignification, alkali refining, bleaching and the selected slagging-off in back, it is characterized in that: boiling is adopted in 15%～30% of the relative over dry jute of NaOH raw materials quality, liquor ratio is 1: 2.5～6, the cooking liquor sulphidity is 15%～30%, 0.05%～1.0% of the relative over dry jute of the green oxygen of digesting assistant raw materials quality, 40～80 minutes heating-up times, 165～178 ℃ of boiling maximum temperatures, temperature retention time 150～210 minutes.
2, the preparation method of hemp dissolving pulp according to claim 1 is characterized in that: pull an oar after the boiling, making beating slurry volume concentration is 5%～10%, and beating time is 20～60 minutes, no little slurry group in the slurry.
3, the preparation method of hemp dissolving pulp according to claim 1 is characterized in that: described oxygen delignification adopts with 2%～10% of the relative over dry jute of oxymeter quality, oxygen pressure 0.6 ± 0.05Mpa, and the oxygen delignification time is 30～60 minutes.
4, the preparation method of hemp dissolving pulp according to claim 1 is characterized in that: described alkali refining adopts in 18% ± 0.05% of the relative over dry jute of NaOH quality, and the alkali refining temperature is 98 ± 1 ℃, and the alkali refining time is 30～60 minutes.
5, according to the preparation method of each described hemp dissolving pulp in the claim 1 to 4, it is characterized in that: described bleaching is adopted in 5%～20% of the relative over dry jute of hydrogen peroxide quality, and bleaching temperature is 60 ± 5 ℃, and bleaching time is 30～90 minutes.
6, the hemp dissolving pulp of the preparation method of hemp dissolving pulp according to claim 5 preparation is characterized in that: pulp alpha cellulose mass content 〉=91%, ash content mass content≤0.1%, iron branch≤30mg/kg, whiteness 〉=72%, the degree of polymerization 500 ± 30, little dust≤240mm
2/ kg, big dust≤1.0/kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100159905A CN101580970B (en) | 2009-06-09 | 2009-06-09 | Preparation method for hemp pulp and prepared hemp pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100159905A CN101580970B (en) | 2009-06-09 | 2009-06-09 | Preparation method for hemp pulp and prepared hemp pulp |
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| Publication Number | Publication Date |
|---|---|
| CN101580970A true CN101580970A (en) | 2009-11-18 |
| CN101580970B CN101580970B (en) | 2011-04-20 |
Family
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|---|---|---|---|
| CN2009100159905A Active CN101580970B (en) | 2009-06-09 | 2009-06-09 | Preparation method for hemp pulp and prepared hemp pulp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031713A (en) * | 2010-10-02 | 2011-04-27 | 山东海龙股份有限公司 | Preparation method of sunflower seed husk pulp |
| CN102181956A (en) * | 2011-03-21 | 2011-09-14 | 山东海龙股份有限公司 | Hemp viscose staple fiber and preparation method thereof |
| CN102226320A (en) * | 2011-06-03 | 2011-10-26 | 唐山三友集团兴达化纤有限公司 | Method for producing bleached dissolving pulp for viscose fibers through denaturation of uncolored unbleached dissolving pulp |
| CN102444044A (en) * | 2010-10-14 | 2012-05-09 | 山东理工大学 | Retinervus luffae fructus pulp for manufacturing viscose fiber and preparation method thereof |
| CN103850146A (en) * | 2014-03-26 | 2014-06-11 | 恒天海龙股份有限公司 | Pulp for viscose and preparation method of pulp |
| CN111962320A (en) * | 2020-08-11 | 2020-11-20 | 岳阳林纸股份有限公司 | Sulfate pulping process for industrial hemp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811055A (en) * | 2006-02-28 | 2006-08-02 | 华南理工大学 | Production process of bleached chemical pulp with hemp stalk core |
| CN101280466A (en) * | 2008-04-21 | 2008-10-08 | 山东海龙股份有限公司 | Hemp dissolving pulp for chemical fabrics and production method thereof |
-
2009
- 2009-06-09 CN CN2009100159905A patent/CN101580970B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031713A (en) * | 2010-10-02 | 2011-04-27 | 山东海龙股份有限公司 | Preparation method of sunflower seed husk pulp |
| CN102444044A (en) * | 2010-10-14 | 2012-05-09 | 山东理工大学 | Retinervus luffae fructus pulp for manufacturing viscose fiber and preparation method thereof |
| CN102181956A (en) * | 2011-03-21 | 2011-09-14 | 山东海龙股份有限公司 | Hemp viscose staple fiber and preparation method thereof |
| CN102181956B (en) * | 2011-03-21 | 2012-11-21 | 山东海龙股份有限公司 | Hemp viscose staple fiber and preparation method thereof |
| CN102226320A (en) * | 2011-06-03 | 2011-10-26 | 唐山三友集团兴达化纤有限公司 | Method for producing bleached dissolving pulp for viscose fibers through denaturation of uncolored unbleached dissolving pulp |
| CN103850146A (en) * | 2014-03-26 | 2014-06-11 | 恒天海龙股份有限公司 | Pulp for viscose and preparation method of pulp |
| CN111962320A (en) * | 2020-08-11 | 2020-11-20 | 岳阳林纸股份有限公司 | Sulfate pulping process for industrial hemp |
| CN111962320B (en) * | 2020-08-11 | 2022-07-12 | 岳阳林纸股份有限公司 | Sulfate pulping process for industrial hemp |
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| Publication number | Publication date |
|---|---|
| CN101580970B (en) | 2011-04-20 |
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