CN102011334A - Method for pulping and making paper by using eucalyptus bark - Google Patents
Method for pulping and making paper by using eucalyptus bark Download PDFInfo
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- CN102011334A CN102011334A CN201010540158XA CN201010540158A CN102011334A CN 102011334 A CN102011334 A CN 102011334A CN 201010540158X A CN201010540158X A CN 201010540158XA CN 201010540158 A CN201010540158 A CN 201010540158A CN 102011334 A CN102011334 A CN 102011334A
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Abstract
The invention discloses a method for pulping and making paper by using eucalyptus bark. In the method, the eucalyptus bark is directly used for producing corrugated paper by crushing, alkaline treatment and pulp grinding; the crushed eucalyptus bark is directly used for producing high-grade corrugated paper after colored substances in the bark are extracted and the processes such as the alkaline treatment, the pulp grinding and the like are performed; and after the colored substances in the bark are extracted, colorless pulp is ground by the processes such as steaming, decolorizing, bleaching and the like for producing white paper. Forest product waste is changed into things of value to create a new process and develop and a new resource; the process is practical and feasible and can be performed in the normal papermaking factories and fiber manufacturers; the forest product waste which pollutes the environment is used for reducing environmental pollution; the incomes of forest workers and peasants are increased by selling the bark; and the method can be used for producing a high-grade pulp material, has low cost and can realize both social benefit and economic benefit of production enterprises.
Description
Technical field
The present invention relates to field of papermaking, especially utilize the method for eucalyptus skin papermaking.
Background technology
Papermaking is one of Chinese four inventions, the present main raw material of papermaking in the world: (1) timber; (2) herbaceous plant; (3) waste paper reclaims.Timber is the main and optimum material of papermaking, and the most frequently used method of pulping wood is (a) mechanical jordaning method; (b) half chemiground pulp method; (c) all there are shortcomings such as the big or pollutant discharge amount of energy consumption is big in chemiground pulp method, makes the papermaking cost higher, and environmental pressure is very big; Herbaceous plant slurrying cost is low, but fiber quality is poor, and the blowdown thing is many, is the kind of present domestic pressure; Waste paper reclaims has economy, environmental protection and advantage such as economize on resources, but also exist resource acquisition, classification, branch is defeated and use many difficulties, needs constantly perfect at aspects such as social habit and environmental protection legislations, to increase its rate of recovery and to utilize level.
The eucalyptus skin is integrated with national material paper in recent years, a large amount of novel forest products discarded objects of planting the living eucalyptus of speed and producing, can't effectively utilize always, a lot of a large amount of enterprises that use eucalyptus produce a large amount of eucalyptus skins, for consuming the eucalyptus skin, reduce environmental pressure, have to transform boiler, not high calorific value, the dry eucalyptus skin burn processing that is difficult to.
According to the study, the eucalyptus skin is compared with other barks, has salient feature: (1) intensity height is easy to utilize; (2) bark structure is loose, adopts methods such as simple alkali treatment, promptly is easy to discongest, defibrination; (3) the own timber waste of bark, cost is low, and the source is wide; (4) the eucalyptus skin is woody material, and fiber quality is good.The eucalyptus leatherware has good development prospect, and therefore, how reasonable use eucalyptus skin becomes current social problem demanding prompt solution.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of utilizing the papermaking of eucalyptus skin, rationally utilizes the eucalyptus skin as waste material, reduces its pressure to environment; With the eucalyptus skin is that raw material cooperates the different paper of existing various pulp production, of many uses.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of method of utilizing eucalyptus leather slurry may further comprise the steps:
1) bark is removed impurity, fragmentation;
2) bark to fragmentation carries out alkali treatment;
3) bark after the alkali treatment is carried out defibrination, become bark fiber paper pulp.
As preferably, with 60 ℃ ~ 100 ℃ hot water lixiviate bark particles, remove DDGS in the bark behind the broken bark.
As preferably, bark fiber paper pulp becomes colourless paper pulp through boiling, bleaching again.
A kind of method of utilizing the papermaking of eucalyptus skin may further comprise the steps:
1) bark is removed impurity, fragmentation;
2) bark to fragmentation carries out alkali treatment;
3) bark after the alkali treatment is carried out defibrination, become bark fiber paper pulp;
4) bark fiber paper pulp is mixed with regenerated paper pulp or market pulp obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper at last.
As preferably, with 60 ℃ ~ 100 ℃ hot water lixiviate bark particles, remove DDGS in the bark behind the broken bark.
As preferably, bark is fractured into thread or sheet.
As preferably, alkali treatment bark later carries out high dense mill, and forming concentration is the crude pulp of 5-35%; Carry out mill again and become bark fiber paper pulp.
As preferably, bark fiber paper pulp becomes colourless paper pulp through boiling, bleaching again.
As preferably, with bark fiber paper pulp and regenerated paper pulp (0.1 ~ 1) by volume: 1 mixes and obtains mixed pulp.
As preferably, with bark fiber paper pulp and market pulp (0.1 ~ 1) by volume: 1 mixes and obtains mixed pulp.
The beneficial effect that the present invention is compared with prior art brought is:
1, new resources utilization: utilize the forest products discarded object, make a silk purse out of a sow's ear, create new technology, the exploitation new resources;
2, technology practical of the present invention, general paper mill, fiber manufactory all can carry out;
3, environmental protection close friend: use the forest products discarded object of contaminated environment, reduce environmental pollution;
4, increasing peasant income: forest worker, peasant increase income by selling bark;
5, the present invention produces high-quality slurry material, and cost is low, can make manufacturing enterprise realize socialbenefit and economic effect's bumper harvests.
Description of drawings
Fig. 1 is the process chart of papermaking of the present invention.
The specific embodiment
The invention will be further described below in conjunction with Figure of description.
Embodiment 1
Present embodiment carries out the papermaking utilization with the Eucalyptus urophylla bark and analyzes explanation, utilizes the Eucalyptus urophylla bark to make the method for corrugated paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into threadly then, with 60 ℃ of hot water lixiviate bark particles, removes the interior DDGS of bark behind the broken bark;
2) bark to fragmentation carries out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 5% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and regenerated paper pulp by volume 0.1:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper at last.
Utilize the eucalyptus leather to make the analytical table of corrugated paper
| [0001] Name of product | [0002] Anti-folding index | [0003] The resistance to compression index | [0004] Output/year |
| [0005] Eucalyptus urophylla | [0006] 10% | [0007] 15% | [0008] 30,000 tons |
Embodiment 2
Present embodiment carries out the papermaking utilization with the Eucalyptus urophylla bark and analyzes explanation, utilizes the Eucalyptus urophylla bark to make the method for corrugated paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into threadly then, with 80 ℃ of hot water lixiviate bark particles, removes the interior DDGS of bark behind the broken bark;
2) the bark particle is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 15% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and regenerated paper pulp by volume 0.5:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper at last.
Utilize the eucalyptus leather to make the analytical table of corrugated paper
| [0009] Name of product | [0010] Anti-folding index | [0011] The resistance to compression index | [0012] Output/year |
| [0013] Eucalyptus urophylla | [0014] 32% | [0015] 45% | [0016] 3.2 ten thousand tons |
Embodiment 3
Present embodiment carries out the papermaking utilization with the Eucalyptus urophylla bark and analyzes explanation, utilizes the Eucalyptus urophylla bark to make the method for corrugated paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into sheet then, with 100 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 35% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and regenerated paper pulp by volume 1:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper at last.
Utilize the eucalyptus leather to make the analytical table of corrugated paper
| [0017] Name of product | [0018] Anti-folding index | [0019] The resistance to compression index | [0020] Output/year |
| [0021] Eucalyptus urophylla | [0022] 62% | [0023] 78% | [0024] 3.1 ten thousand tons |
Embodiment 4
Present embodiment carries out the papermaking utilization with the blue gum bark and analyzes explanation, utilizes the blue gum leather to make the method for senior corrugated paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the sheet of 20mm size then, with 60 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 5% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and regenerated paper pulp by volume 0.1:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper at last.
Utilize the eucalyptus leather to make the analytical table of senior corrugated paper
| [0025] Name of product | [0026] Anti-folding index | [0027] The resistance to compression index | [0028] Output/year |
| [0029] Blue gum | [0030] 32% | [0031] 41% | [0032] 3.5 ten thousand tons |
Embodiment 5
Present embodiment carries out the papermaking utilization with the blue gum bark and analyzes explanation, utilizes the blue gum leather to make the method for senior corrugated paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the sheet of 30mm size then, with 80 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 20% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and market pulp by volume 0.5:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper paper at last.
Utilize the eucalyptus leather to make the analytical table of senior corrugated paper
| [0033] Name of product | [0034] Anti-folding index | [0035] The resistance to compression index | [0036] Output/year |
| [0037] Blue gum | [0038] 64% | [0039] 81% | [0040] 3.4 ten thousand tons |
Embodiment 6
Present embodiment carries out the papermaking utilization with the blue gum bark and analyzes explanation, utilizes the blue gum leather to make the method for senior corrugated paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the sheet of 40mm size then, with 100 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 35% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and regenerated paper pulp by volume 1:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper paper at last.
Utilize the eucalyptus leather to make the analytical table of senior corrugated paper
| [0041] Name of product | [0042] Anti-folding index | [0043] The resistance to compression index | [0044] Output/year |
| [0045] Blue gum | [0046] 72% | [0047] 96% | [0048] 3.4 ten thousand tons |
Embodiment 7
Present embodiment carries out the papermaking utilization with the eucalyptus camaldulensis bark and analyzes explanation, utilizes the red gum leather to make the method for brown paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the thread of 20mm size then, with 60 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 5% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and regenerated paper pulp by volume 0.1:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper paper at last.
Utilize the eucalyptus leather to make the analytical table of brown paper
| [0049] Name of product | [0050] Anti-folding index | [0051] Cost descends | [0052] Output/year |
| [0053] Eucalyptus camaldulensis | [0054] 11% | [0055] 7% | [0056] 3.0 ten thousand tons |
Embodiment 8
Present embodiment carries out the papermaking utilization with the eucalyptus camaldulensis bark and analyzes explanation, utilizes the red gum leather to make the method for brown paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the thread of 30mm size then, with 80 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 15% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and market pulp by volume 0.5:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper at last.
Utilize the eucalyptus leather to make the analytical table of brown paper
| [0057] Name of product | [0058] Anti-folding index | [0059] Cost descends | [0060] Output/year |
| [0061] Eucalyptus camaldulensis | [0062] 20% | [0063] 13% | [0064] 3.1 ten thousand tons |
Embodiment 9
Present embodiment carries out the papermaking utilization with the eucalyptus camaldulensis bark and analyzes explanation, utilizes the red gum leather to make the method for brown paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the thread of 40mm size then, with 100 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 35% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) with bark fiber paper pulp and pure wood pulp by volume 1:1 mix and obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper paper at last.
Utilize the eucalyptus leather to make the analytical table of brown paper
| [0065] Name of product | [0066] Anti-folding index | [0067] Cost descends | [0068] Output/year |
| [0069] Eucalyptus camaldulensis | [0070] 27% | [0071] 30% | [0072] 3.2 ten thousand tons |
Embodiment 10
Present embodiment carries out the papermaking utilization with the flooded gum bark and analyzes explanation, utilizes the flooded gum leather to make the method for blank sheet of paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the thread of 20mm size then, with 60 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 5% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) bark fiber paper pulp is carried out boiling, bleaching;
5) with bark fiber paper pulp and regenerated paper pulp by volume 0.1:1 mix and obtain mixed pulp;
6) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper paper at last.
Utilize the eucalyptus leather to make the analytical table of blank sheet of paper
| [0073] Name of product | [0074] Anti-folding index | [0075] Tensile index | [0076] Output/year |
| [0077] Flooded gum | [0078] 18% | [0079] 22% | [0080] 2.8 ten thousand tons |
Embodiment 11
Present embodiment carries out the papermaking utilization with the flooded gum bark and analyzes explanation, utilizes the flooded gum leather to make the method for blank sheet of paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the thread of 30mm size then, with 80 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 25% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) bark fiber paper pulp is carried out boiling, bleaching;
5) with bark fiber paper pulp and market pulp by volume 0.5:1 mix and obtain mixed pulp;
6) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper paper at last.
Utilize the eucalyptus leather to make the analytical table of blank sheet of paper
| [0081] Name of product | [0082] Anti-folding index | [0083] Tensile index | [0084] Output/year |
| [0085] Flooded gum | [0086] 21% | [0087] 30% | [0088] 2.7 ten thousand tons |
Embodiment 12
Present embodiment carries out the papermaking utilization with the flooded gum bark and analyzes explanation, utilizes the flooded gum leather to make the method for blank sheet of paper, as shown in Figure 1, may further comprise the steps:
1) bark is removed impurity, is broken into the thread of 40mm size then, with 100 ℃ of hot water lixiviate bark particles, removes DDGS in the bark behind the broken bark;
2) the bark particle after soaking is carried out alkali treatment;
3) alkali treatment bark later carries out high dense mill, and formation concentration is 35% crude pulp; Carry out mill again and become bark fiber paper pulp;
4) bark fiber paper pulp is carried out boiling, bleaching;
5) with bark fiber paper pulp and colourless paper pulp by volume 1:1 mix and obtain mixed pulp;
6) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper paper at last.
Utilize the eucalyptus leather to make the analytical table of blank sheet of paper
| [0089] Name of product | [0090] Anti-folding index | [0091] Tensile index | [0092] Output/year |
| [0093] Flooded gum | [0094] 25% | [0095] 32% | [0096] 2.6 ten thousand tons |
In sum, the regenerated paper pulp that is proposed among the embodiment, pure wood pulp, market pulp and colourless paper pulp are the paper pulp that existing technology can be made, and no longer describe in detail in the case of the present invention.
Claims (10)
1. method of utilizing eucalyptus leather slurry is characterized in that: may further comprise the steps:
1) bark is removed impurity, fragmentation;
2) bark to fragmentation carries out alkali treatment;
3) bark after the alkali treatment is carried out defibrination, become bark fiber paper pulp.
2. a kind of method of utilizing eucalyptus leather slurry according to claim 1 is characterized in that: broken
With 60 ℃ ~ 100 ℃ hot water lixiviate bark particles, remove DDGS in the bark behind the broken bark.
3. a kind of method of utilizing eucalyptus leather slurry according to claim 1 is characterized in that: bark fiber paper pulp becomes colourless paper pulp through boiling, bleaching again.
4. method of utilizing the papermaking of eucalyptus skin is characterized in that may further comprise the steps:
1) bark is removed impurity, fragmentation;
2) bark to fragmentation carries out alkali treatment;
3) bark after the alkali treatment is carried out defibrination, become bark fiber paper pulp;
4) bark fiber paper pulp is mixed with regenerated paper pulp or market pulp obtain mixed pulp;
5) mixed pulp carries out page and manufactures paper with pulp, and the dehydration squeezing is dry, is organized into paper at last.
5. a kind of method of utilizing the papermaking of eucalyptus skin according to claim 4 is characterized in that: broken
With 60 ℃ ~ 100 ℃ hot water lixiviate bark particles, remove DDGS in the bark behind the broken bark.
6. a kind of method of utilizing the papermaking of eucalyptus skin according to claim 4, it is characterized in that: bark is fractured into thread or sheet.
7. a kind of method of utilizing the papermaking of eucalyptus skin according to claim 4 is characterized in that: alkali treatment bark later carries out high dense mill, and forming concentration is the crude pulp of 5-35%; Carry out mill again and become bark fiber paper pulp.
8. according to claim 4 or 7 described a kind of methods of utilizing the papermaking of eucalyptus skin, it is characterized in that: bark fiber paper pulp becomes colourless paper pulp through boiling, bleaching again.
9. a kind of method of utilizing the papermaking of eucalyptus skin according to claim 4 is characterized in that: with bark fiber paper pulp and regenerated paper pulp (0.1 ~ 1) by volume: 1 mixes and obtains mixed pulp.
10. a kind of method of utilizing the papermaking of eucalyptus skin according to claim 4 is characterized in that: with bark fiber paper pulp and market pulp (0.1 ~ 1) by volume: 1 mixes and obtains mixed pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010540158 CN102011334B (en) | 2010-11-11 | 2010-11-11 | Method for pulping and making paper by using eucalyptus bark |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010540158 CN102011334B (en) | 2010-11-11 | 2010-11-11 | Method for pulping and making paper by using eucalyptus bark |
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| Publication Number | Publication Date |
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| CN102011334A true CN102011334A (en) | 2011-04-13 |
| CN102011334B CN102011334B (en) | 2013-04-10 |
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| CN105986505A (en) * | 2015-02-05 | 2016-10-05 | 福建省泉州海丝船舶评估咨询有限公司 | Paper prepared from Zongtong fiber and production method thereof |
| CN106223106A (en) * | 2016-07-27 | 2016-12-14 | 阜南县腾祥工艺品有限公司 | A kind of preparation method of constitutionally stable weaving paper using |
| CN107429484A (en) * | 2015-03-11 | 2017-12-01 | 安德里兹有限公司 | Method and system for the slurrying of ligno-cellulosic materials |
| CN109082929A (en) * | 2018-09-06 | 2018-12-25 | 梁理鼎 | A kind of method and paper pulp using eucalyptus barks production paper making pulp |
| CN109183485A (en) * | 2018-08-06 | 2019-01-11 | 华南理工大学 | The fully chlorine-free bleaching method and application that a kind of china picture-character paper is starched with bark |
| EP3748077A1 (en) | 2019-06-03 | 2020-12-09 | Raiz - Instituto De Investigação Da Floresta E Papel | Eucalyptus globulus bark pulp for tissue products |
| CN112342814A (en) * | 2020-11-19 | 2021-02-09 | 横县东糖糖业有限公司纸业分公司 | Method for producing high-strength natural-color paper pulp by taking eucalyptus bark as raw material |
| CN112411257A (en) * | 2020-11-04 | 2021-02-26 | 江西中竹生物质科技有限公司 | Method for producing degradable mulching paper by using eucalyptus waste sheet pulp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105986505A (en) * | 2015-02-05 | 2016-10-05 | 福建省泉州海丝船舶评估咨询有限公司 | Paper prepared from Zongtong fiber and production method thereof |
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| CN109183485A (en) * | 2018-08-06 | 2019-01-11 | 华南理工大学 | The fully chlorine-free bleaching method and application that a kind of china picture-character paper is starched with bark |
| CN109082929A (en) * | 2018-09-06 | 2018-12-25 | 梁理鼎 | A kind of method and paper pulp using eucalyptus barks production paper making pulp |
| EP3748077A1 (en) | 2019-06-03 | 2020-12-09 | Raiz - Instituto De Investigação Da Floresta E Papel | Eucalyptus globulus bark pulp for tissue products |
| WO2020245071A1 (en) | 2019-06-03 | 2020-12-10 | Raiz - Instituto De Investigação Da Floresta E Papel | Eucalyptus globulus bark pulp for tissue products |
| CN112411257A (en) * | 2020-11-04 | 2021-02-26 | 江西中竹生物质科技有限公司 | Method for producing degradable mulching paper by using eucalyptus waste sheet pulp |
| CN112342814A (en) * | 2020-11-19 | 2021-02-09 | 横县东糖糖业有限公司纸业分公司 | Method for producing high-strength natural-color paper pulp by taking eucalyptus bark as raw material |
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