CN100582360C - Pulping paper-making method using hybrid chinese pennisetum as raw material and product - Google Patents
Pulping paper-making method using hybrid chinese pennisetum as raw material and product Download PDFInfo
- Publication number
- CN100582360C CN100582360C CN200410096100A CN200410096100A CN100582360C CN 100582360 C CN100582360 C CN 100582360C CN 200410096100 A CN200410096100 A CN 200410096100A CN 200410096100 A CN200410096100 A CN 200410096100A CN 100582360 C CN100582360 C CN 100582360C
- Authority
- CN
- China
- Prior art keywords
- paper
- pulp
- raw material
- making method
- boiling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Paper (AREA)
Abstract
The present invention belongs to the field of papermaking technology, and is especially papermaking process with hybrid Chinese peunisetum as raw material. Hybrid Chinese peunisetum may be used as raw material to produce various kinds of paper and card board products through pre-treatment, preparing material, cutting, steaming, grinding to form paper pulp, pulp sheet making, winding and other steps. The said process has saving in water and power, soft steamed pulp material, easy grinding, good pulp color, fast filtering and other advantages, and the paper products have high physical performance. Hybrid Chinese peunisetum may be planted with sewage and sludge from imine papermaking process directly and this is environment friendly.
Description
Technical field
The present invention relates to a kind of pulp and paper making method and products thereof, relating in particular to a kind of is pulp and paper making method and products thereof the high-strength corrugated base paper of raw material with the hybrid Chinese pennisetum.
Background technology
China's paper industry development in recent years is that rare consumption increases one of industry greater than production increase rapidly.China is the big country of non-wood fibrous raw material pulping and paper-making in the world, paper more than 70% that China produces and cardboard are to adopt non-wood fiber raw material, and it is with a long history to use papermaking straw pulp to have, technology maturation, production equipment is numerous, has brought into play important function for promoting paper industry.Along with the continuous increase of paper and paperboard production and consumption figure, supply pulp but all subtracts with day, depends on imported raw material in a large number, need use foreign currency every year hundred billion yuan, expends surprising.The paper making raw material imbalance between supply and demand is outstanding day by day, and especially based on the manufacturer of non-wood fiber raw material, ubiquity is purchased deficiencies such as the raw material radius is big, of poor quality, cost is high, the intensification degree is low.
In view of above reason, press for and improve and adjustment paper industry supply of raw material structure.Therefore, develop a kind of pulp and paper making method of new material, both can satisfy raw material sources, can improve the quality of products again simultaneously, this reduces production costs to alleviating the paper making raw material short supply, satisfies the demands, increase benefit, save foreign exchange, promotion paper industry development etc. has important innovation meaning.
Hybrid Chinese pennisetum is the grass family perennial herb, is C
4Plant, vegetative propagation is triploid.Have advantages such as output height, easily kind is easily managed, low, the photosynthetic usefulness of cost is good.Under medium fertilizer and water condition, it is 300 tons～400 tons that per hectare is generally produced bright grass amount per year, and amounting to dry is 45 tons～80 tons, is described as the title of " world grass king " by numerous experts.Its well developed root system, aerial part does not have aerial root, and the hybrid Chinese pennisetum after improvement is optimized requires not tight to soil, be suitable for establishing in large scale and demonstration test success.
Hybrid Chinese pennisetum is widely used in feed owing to have higher nutritional labeling, and it makes the greenfeed of ox, sheep, mule, horse, deer, can take turns in year and cut 3～4 times; Do fish, rabbit etc. and hold the greenfeed of fowl, can take turns in year and cut 5～6 times; Except green grass or young crops is cut, but also hay curing or modulation greenfeed can also be used as the mixed feed of feed processing, the raw material of mixed fodder.But the report that application is not arranged in pulp technology for making paper as yet.The inventor uses through experimental study and pilot scale for many years and finds, the fibre morphology of hybrid Chinese pennisetum has that length-width ratio is big, the wall chamber than little, fiber is long, be better than advantage such as existing similar string, it is used for papermaking and can alleviates the problem that there is lack of raw materials as a large amount of production of fibrous raw material, and can improve paper quality, so finished the present invention.
Summary of the invention
Institute's technical solution problem
In order to overcome the contradiction that field of papermaking exists and the deficiency of prior art, the object of the present invention is to provide a kind of is the pulp and paper making method of raw material with the hybrid Chinese pennisetum, method is simple for this, and can solve the problem that there is lack of raw materials, cut down the consumption of energy, increase benefit, can also improve paper and cardboard quality simultaneously.A kind of high-strength corrugated base paper of being made by the inventive method also is provided simultaneously.
Technical scheme
Specifically, purpose of the present invention can realize in the following way:
Pulp and paper making method of the present invention may further comprise the steps: be feedstock production paper pulp with the hybrid Chinese pennisetum; Through the paper machine product of manufacturing paper with pulp.
Wherein said hybrid Chinese pennisetum is to serve as maternal and napier grass (P.purpureum Schu-mach.) N51 is the hybrid of male parent with American pennisetum alopecuroides (Pennisetum americanumL.Leeke) Tift23A.Preferred described hybrid Chinese pennisetum likeness in form sugarcane, strain shape compactness, fibrous root prosperity, aerial part do not have aerial root; Plant is generally up to 3.5m～4.5m, and stooling is extremely strong, generally tillers more than 25 strains the long 10～18cm of joint, the long 90～150cm of leaf, the wide 3～5cm of leaf, the thick 2～4cm of stem; Be 150～180 days growth period, i.e. April～late October, be the summit of growth phase June～September, and per ten days jointing elongation is 40cm～60cm nearly, and per ten days increases progressively with the temperature increase; Hybrid Chinese pennisetum with fertile with 20kg/ mu nitrogenous fertilizer in conjunction with fertilizer all can, under the suitable situation of temperature, moisture, general cuttage was taken root in 7～10 days, 12～15 days upright seedlings, 15～20 days begin to tiller.The cane of described hybrid Chinese pennisetum, leaf and marrow all can be used as the pulping and paper-making raw material.
The method of wherein said pulping and paper-making can be the conventional or known method in this area, for example can adopt Ammonium Sulfite Method, NaOH-AQ method, sulfate process or soda processes.The preferred pulping with ammonium sulfite method papermaking high-strength corrugated base paper of manufacturing paper with pulp that adopts.
Described pulping and paper-making also can may further comprise the steps: with raw material dress pot, for example 25m
3Rotary spherical digester is 160～170 ℃ of boilings in temperature, and the imonium consumption of boiling is 8～16% of an over dry raw material, and the free ammonia consumption is 1.5%～2.0% of an over dry raw material, and liquor ratio 1: 2.3～1: 8, temperature retention time are 1～2h; Cooking liquor is through spurting after the boiling, and shove, defibrination make paper pulp.The boiling water adopts rare black liquor also to be heated in advance more than 50 ℃ in the preferred described boiling.But so not only can save the residual imonium in clear water but also the reuse black liquor, thereby improve the recovery rate of black liquor, and reduce and pollute, and hot water dress pot can suitably improve dress pot amount.Described shove can adopt any this area routine or known method and equipment, and preferably slurry extracts cooking liquor through two roads series connection Var-nip press, the slurry that comes out by the first road press master, with rare black liquor towards rare and stir after enter the second road press master shove.Described defibrination can adopt any this area routine or known method and equipment, preferably divides three times, and with machete distance and high slurry concentration feeding, pocket knife distance and low dense even feeding are adopted in second and third time for the first time.Adopt the method can effectively improve paper strength.
Described paper machine is copied paper can adopt any this area routine or known method and equipment, for example can copy paper on the little long mesh paper making machine of 200mm, or copy paper on 2880 multi-cylinder fourdrinier machines.Preferably join when copying paper and copy 30～70% secondary stock, the purpose of allocating secondary stock into is deflection and the ring crush index that increases paper, can join also that to copy other fibrous raw material pulping and paper-making fine equally.
In the pulp and paper making method of the present invention, the described hybrid Chinese pennisetum chaffcutter of also can behind the hay grabbing machine pressure roller, getting the raw materials ready earlier, this step is convenient to water balance in the grass, makes chaffcutter smoothly and improve the chaffcutter qualification rate on the other hand.
The best-of-breed technology scheme of pulp and paper making method of the present invention may further comprise the steps:
(1) gets the raw materials ready;
(2) chaffcutter;
(3) transmission dedusting;
(4) dress pot: on average be charged to 25m
3Rotary spherical digester;
(5) boiling: in temperature is 160～165 ℃ of boilings, the imonium consumption of boiling is 8%～12% of an over dry raw material, and the free ammonia consumption is an over dry raw material 1.5～2.0%, liquor ratio 1: 2.3～1: 5, temperature retention time is 1～2h, and the boiling water adopts rare black liquor and is heated in advance more than 50 ℃;
(6) shove: boiling end to adopt total head to spurt, and slurry carries out cooking liquor through two roads series connection Var-nip press and extracts, the slurry that comes out by the first road press master, with rare black liquor towards rare and stir after, enter the second road press master shove;
(7) defibrination: through two road press masters, remove rigid impurity in the slurry, slurry enters disc mill and pulls an oar, divide three times, with machete distance and high slurry concentration feeding, pocket knife distance and low dense even feeding are adopted in second and third time for the first time, refining concentration is 3.0～3.4%, and it is standby to make paper pulp;
(8) copy paper: in paper pulp, allocate the waste paper that accounts for paper pulp weight 30～45% into, copy paper at paper machine.
The ratio that cane, marrow, the leaf of preferred hybrid Chinese pennisetum of getting the raw materials ready in the above-mentioned steps accounts for respectively is 66.8%, 15.2%, 10.5%, and by before expecting that station-service machinery is transported to chaffcutter, by artificial feeding, because this grass length is neat, compare saving of work and time with the artificial feeding of wheat straw.
Preferably through the mechanical compaction roll chaffcutter, the chaffcutter qualification rate can satisfy the boiling requirement in the chaffcutter step.
In the transmission dust removal step, the blade that cuts is through the transmission dedusting, and faster than the wheat straw transmission, dedusting is easier to, and power consumption is few, and chaffcutter loss late, sieve loss(es) rate, the loss late of getting the raw materials ready all are lower than wheat straw, as change moderate screen cloth, and three rates also can reduce.
Owing to use hybrid Chinese pennisetum to be raw material, its density is moderate in dress pot step, and 25m on average feeds
3Rotary spherical digester than wheat straw save time, every m
3It is big than the wheat straw amount to adorn clean material amount, and cooking liquor permeates easily, and digestion process is controlled easily, and slurry is even.
In the boiling step, the boiling water adopts rare black liquor and being heated in advance more than 50 ℃, and this saves the clear water consumption on the one hand, but the residual imonium in the reuse black liquor again.Hot water dress pot also can suitably improve dress pot amount.
In the shove step, preferred slurry carries out the boiling raffinate through two roads series connection Var-nip press and extracts, be provided with the slurry dilution trap in the middle of the press master, the slurry that comes out by the first road press master, in this equipment with rare black liquor towards rare and stir, make the slurry that enters the second road press master even, so that improve the recovery rate of black liquor.
In the defibrination step, through two road press masters, removed rigid impurity in the slurry, slurry for example enters that the disc mill of Ф 550 and Ф 450 carries out defibrination, and refining concentration can be 3.0～3.4%.The hybrid Chinese pennisetum slurry of the conditions of cooking in the scope of the invention is when defibrination, and charging and grinding are all very smooth.
The equipment or the reagent that adopt in the inventive method are the commercially available prod, for example the ZCO model rotor chaffcutter of Shandong Yangfan Machinery Co., Ltd., Weifang production and sales and 120 tons/d Var-nip press.
The inventive method can be used for making high-strength corrugated base paper, boxboard and other paper and cardboard, and it all is the feedstock production paper pulp and the product of manufacturing paper with pulp with the hybrid Chinese pennisetum.
Beneficial effect
Adopt new material pulp and paper making method of the present invention simple and easy to do, can solve the paper making raw material problem of shortage, can cut down the consumption of energy simultaneously, improve the quality of products.The inventive method pulping yield is more than 65%.Boiling disposed slurry softness, easily defibrination, that pulping is of light color, color and luster good, the slurry drainage is manufactured paper with pulp is functional, dewater, the favourable raising speed of a motor vehicle, better than the performance of getting damp of existing wheat straw paper, intensity index all meets or exceeds the A level.Because of hybrid Chinese pennisetum nitrophilous fertilizer in the plantation growth; contain full nitrogen (N) 1.00～1.87% in the pulping waste liquor when using the inventive method; ammoniacal nitrogen 0.82～1.28%; also have a spot of phosphorus and potash fertilizer, the mud that middle-stage wastewater is administered the back generation contains a large amount of organic matters, and this is the available fertilizer of hybrid Chinese pennisetum just; can handle especially; directly irrigate and use as hybrid Chinese pennisetum base fertilizer, to environmental protection, exploitation " recycling economy " is used very favourable.
To the hybrid Chinese pennisetum boiling, and carry out defibrination and copy paper test under the conditions of cooking within the scope of the present invention; Get part secondary stock home made O CC and join with it and copy, measure it and join paper strength after copying.
Boiling is carried out in 15 liters of electric heating revolution pots, and dress pot amount is 1kg over dry material.The raw material that boiling is used is 1 month hybrid Chinese pennisetum of harvesting.
Adopt the inventive method and the physical properties of pulp that adopts ryegrass pulping and the intensity results of the high-strength corrugated base paper of being manufactured paper with pulp to list in table 1 and table 2 respectively.
Table 1 physical properties of pulp
The intensity of table 2 high-strength corrugated base paper
As can be seen, the high-strength corrugated base paper that employing the inventive method is manufactured paper with pulp totally is better than the high-strength corrugated base paper that wheat straw is manufactured paper with pulp on performance indications such as ring crush intensity, fracture length and tearing strength from table 1 and table 2.
The specific embodiment
The present invention describes with the following example, but does not limit the present invention.
Embodiment 1:
(1) get the raw materials ready: hybrid Chinese pennisetum is air-dry, through the hay grabbing machine pressure roller;
(2) chaffcutter: be cut to blade by chaffcutter;
(3) transmission dedusting;
(4) dress pot: 25m on average feeds
3Rotary spherical digester;
(5) boiling: in temperature is 160 ℃, and the imonium consumption of boiling is to over dry raw material 12%, and the free ammonia consumption is to over dry raw material 1.5%, liquor ratio 1: 8, temperature retention time is that 1h carries out boiling, and wherein the boiling water is for being heated to rare black liquor of 60 ℃ in advance, and the pulping yield of hybrid Chinese pennisetum is 65.1%;
(6) shove: boiling end to adopt total head to spurt, and slurry carries out the boiling raffinate through two roads series connection Var-nip press and extracts, the slurry that comes out by the first road press master, with rare black liquor towards rare and stir after, enter the second road press master shove;
(7) defibrination: through two road press masters, remove rigid impurity in the slurry, slurry enters Ф 550 and Ф 450 disc mills are pulled an oar, and refining concentration is 3.0%.
(8) copy paper: the product of manufacturing paper with pulp on the little long mesh paper making machine of 200mm makes high-strength corrugated base paper.
After measured, becoming the ring crush index of paper is 12.84N.m
2/ g, fracture length are 7.02km, and folding strength is 10 times, and every index is all above the national standard requirement of high-strength corrugated base paper.
Embodiment 2:
Identical with step among the embodiment 1, just the temperature in the step (5) is replaced with 165 ℃, the imonium consumption of boiling replaces with over dry raw material 14%, and the free ammonia consumption replaces with over dry raw material 1.55%, and liquor ratio replaces with 1: 5, and temperature retention time replaces with 2h.
After measured, becoming the ring crush index of paper is 18.29N.m
2/ g, fracture length are 6.56km, and folding strength is 8 times, and every index all meets the national standard requirement of high-strength corrugated base paper.
Embodiment 3:
Identical with step among the embodiment 1, just the temperature in the step (5) is replaced with 170 ℃, the imonium consumption of boiling replaces with over dry raw material 16%, and the free ammonia consumption replaces with over dry raw material 2.0%, and liquor ratio replaces with 1: 2.3, and temperature retention time replaces with 1.5h.
After measured, becoming the ring crush index of paper is 17.34N.m
2/ g, fracture length are 6.82km, and folding strength is 6 times, and every index all meets the national standard requirement of high-strength corrugated base paper.
Embodiment 4:
Identical with step among the embodiment 1, just step (8) is changed on 2880 multi-cylinder fourdrinier machines and copy paper, because of hybrid Chinese pennisetum Ammonium Sulfite Method slurry softness, dehydration property is good, causes to manufacture paper with pulp smoothly paper injection behind the approach flow, batch easily, whole paper-making process does not break end.Under the condition determination of 25 ℃ of temperature of 50% humidity, the secondary stock of proportioning 45%, the high-strength corrugated base paper of manufacturing paper with pulp.
The high-strength corrugated base paper that embodiment 4 manufactures paper with pulp according to the manufacture paper with pulp testing standard of high-strength corrugated base paper of GB Ammonium Sulfite Method, records quality and is listed in the table below 3:
The table 3 hybrid Chinese pennisetum pulping with ammonium sulfite method high-strength corrugated base paper quality of manufacturing paper with pulp
As seen from Table 3, the embodiment 4 every intensity index of high-strength corrugated base paper of manufacturing paper with pulp all meets or exceeds the A level QUALITY STANDARD of GB13023--91 regulation.
Though above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, not departing from the modifications or improvements basically of spirit of the present invention, all belong to the scope of protection of present invention.
Claims (7)
1. one kind is the pulp and paper making method of raw material with the hybrid Chinese pennisetum, it is characterized in that may further comprise the steps: with American pennisetum alopecuroides Tift23A serves as maternal and napier grass N51 is that the hybrid Chinese pennisetum of male parent is a raw material dress pot, boiling under 160 ℃-170 ℃ temperature conditions, imonium consumption during boiling is the 8%-16% of over dry raw material, the free ammonia consumption is the 1.5%-2.0% of over dry raw material, and liquor ratio is 1: 2.3-1: 8, and temperature retention time is 1-2h, cooking liquor is through spurting after the boiling, and shove, defibrination make paper pulp;
Copy the product that gets made of paper through paper machine.
2. pulp and paper making method according to claim 1, it is characterized in that described hybrid Chinese pennisetum the preparation paper pulp before through hay grabbing machine pressure roller back balance moisture, the chaffcutter of getting the raw materials ready.
3. pulp and paper making method according to claim 1 is characterized in that the boiling water adopts rare black liquor in the described boiling, and is heated in advance more than 50 ℃.
4. pulp and paper making method according to claim 1, it is characterized in that described shove is that slurry carries out the extraction of boiling raffinate through two roads series connection Var-nip press, the slurry that comes out by the first road press master, with rare black liquor towards rare and stir after enter the second road press master shove.
5. pulp and paper making method according to claim 1 is characterized in that described defibrination is branch three times, and with machete distance and high slurry concentration feeding, pocket knife distance and the even feeding of low concentration are adopted in second and third time for the first time.
6. pulp and paper making method according to claim 1 when it is characterized in that described paper machine is copied paper, is joined and is copied 30～70% secondary stock.
7. the high-strength corrugated base paper of making according to the arbitrary described pulp and paper making method of claim 1-6 is characterized in that it is is the feedstock production paper pulp and the product of manufacturing paper with pulp with the hybrid Chinese pennisetum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410096100A CN100582360C (en) | 2004-11-30 | 2004-11-30 | Pulping paper-making method using hybrid chinese pennisetum as raw material and product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410096100A CN100582360C (en) | 2004-11-30 | 2004-11-30 | Pulping paper-making method using hybrid chinese pennisetum as raw material and product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1782221A CN1782221A (en) | 2006-06-07 |
| CN100582360C true CN100582360C (en) | 2010-01-20 |
Family
ID=36772790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410096100A Expired - Fee Related CN100582360C (en) | 2004-11-30 | 2004-11-30 | Pulping paper-making method using hybrid chinese pennisetum as raw material and product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100582360C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451322B (en) * | 2007-12-05 | 2012-07-18 | 山东泉林纸业有限责任公司 | Grass type un-bleaching pulp, preparation method and use thereof |
| CN101451326B (en) * | 2007-12-05 | 2011-06-08 | 山东福荫造纸环保科技有限公司 | Un-bleaching pulp prepared by ammonium sulfite steam cooking wheat straw raw material, preparation method and use thereof |
| CN101451321B (en) * | 2007-12-05 | 2012-06-20 | 山东泉林纸业有限责任公司 | Low brightness pulp prepared by ammonium sulfite steam cooking wheat straw raw material, preparation method and use thereof |
| CN101451319B (en) * | 2007-12-05 | 2012-10-31 | 山东泉林纸业有限责任公司 | Low brightness pulp prepared by ammonium sulfite steam cooking straw raw material, preparation method thereof and use thereof |
| CN101760987B (en) * | 2008-11-28 | 2012-10-03 | 山东福荫造纸环保科技有限公司 | High-air-permeability mixed pulp and household paper made thereof |
| CN108149500B (en) * | 2017-12-14 | 2019-05-28 | 贵州华农集团生态畜牧科技发展有限公司 | The preparation method of true qualities gold and silver grass fiber water suction lining paper |
-
2004
- 2004-11-30 CN CN200410096100A patent/CN100582360C/en not_active Expired - Fee Related
Non-Patent Citations (6)
| Title |
|---|
| 制浆原理与工程. 谢来苏，詹怀宇，65页，中国轻工业出版社. 2001 |
| 制浆原理与工程. 谢来苏，詹怀宇，65页，中国轻工业出版社. 2001 * |
| 引进皇竹草种植、制浆除探. 蔡兆斌.中华纸业，第23卷第4期. 2002 |
| 引进皇竹草种植、制浆除探. 蔡兆斌.中华纸业，第23卷第4期. 2002 * |
| 皇竹草的生物特性与化学组成. 张辉，黄德裕，李忠正.中国造纸，第22卷第5期. 2003 |
| 皇竹草的生物特性与化学组成. 张辉，黄德裕，李忠正.中国造纸，第22卷第5期. 2003 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1782221A (en) | 2006-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102337687B (en) | Novel pulping process for obtaining high performance fiber at high yield from plants | |
| CN102242521B (en) | Method for preparing pulp by gramineous straw and use of obtained pulp | |
| US11834784B2 (en) | Method for preparing unbleached biomechanical pulp and fully utilizing by-products by treating straws with heat steam in synergy with biological enzyme | |
| CN108611912A (en) | A kind of technique that Yellow humic acid fertilizer and high-strength corrugated paper are produced as raw material using cotton stalk | |
| CN109183480A (en) | A kind of acid Ammonium Sulfite Method production technology preparing fulvic acid and high-strength corrugated paper slurry using non-wood fiber as raw material | |
| CN102475353A (en) | Tobacco stalk fiber substance as well as preparation method and application thereof | |
| CN100582360C (en) | Pulping paper-making method using hybrid chinese pennisetum as raw material and product | |
| CN100424260C (en) | Mechanical cold method for making paper pulp | |
| CN101224036A (en) | Ramie external fiber for tobacco sheet and preparing method thereof | |
| CN109423909A (en) | It is a kind of using grass class plant as the process integration of raw material | |
| CN109082921A (en) | A kind of paper for daily use refining process of high intensity low energy consumption | |
| CN110924228B (en) | Light green non-heat-sealing type tea filter paper and preparation method thereof | |
| CN109423902A (en) | A kind of organic fertilizer and preparation method thereof that the black liquid generated using soda pulping process technique is prepared | |
| CN109423907A (en) | A kind of process integration preparing high-grade paper slurry and fertilizer | |
| CN102888360A (en) | Bio-bacteria and bio-bacterial solution pulping method | |
| CN112726284A (en) | Composite paper and preparation method thereof | |
| CN111691221A (en) | Rice straw papermaking method | |
| CN100580180C (en) | Cardboard thickening agent and manufacturing method and uses thereof | |
| CN100500993C (en) | Hybrid penisetum NaOH-AQ method for pulp making, bleaching and paper forming | |
| CN102888365A (en) | Acinetobacter lwoffii and biological bacteria liquid pulping method thereof | |
| CN102888358A (en) | Pseudomonas fluorescens and biological bacteria liquid pulping method | |
| CN102888373A (en) | Compound bacteria for biological bacteria liquid pulping and application of compound bacteria | |
| CN102888341A (en) | Compound bacteria and application in biological bacteria liquid pulping technology of compound bacteria | |
| CN102888343A (en) | Compound bacteria for biological bacteria liquid pulping and application of compound bacteria | |
| CN104088190B (en) | Method for making cardboard paper by using canna edulis ker residue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20111130 |