CN102966002B - Preparation of enhancer for nanofiber whisker paper and application method of enhancer to coating of paper-making tobacco sheets - Google Patents
Preparation of enhancer for nanofiber whisker paper and application method of enhancer to coating of paper-making tobacco sheets Download PDFInfo
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- CN102966002B CN102966002B CN201210505118.0A CN201210505118A CN102966002B CN 102966002 B CN102966002 B CN 102966002B CN 201210505118 A CN201210505118 A CN 201210505118A CN 102966002 B CN102966002 B CN 102966002B
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Abstract
The invention provides an application method for preparing a coating of paper-making tobacco sheets by an enhancer for nanofiber whisker paper on paper making. The enhancer for the nanofiber whisker paper is prepared and then is applied to the coating of the paper-making tobacco sheets. As nanofiber whiskers are cellulose with nanoscale, the chemical activity of the nanofiber whiskers is greatly higher than that of cellulose with fiber scale, and thus the nanofiber whiskers and fibers can be subjected to hydrogen bonding easily. When the enhancer is applied to the coating of the paper-making tobacco sheets, the surface strength of the paper-making tobacco sheets is improved, so that the chip generating rate in a processing course is reduced, the costs are reduced, and the utilization rate of raw materials is improved. Simultaneously, as being the pure cellulose and not containing lignin, the enhancer for the nanofiber whisker paper does not generate offensive odor to influence smoking taste when being added into the coating of the paper-making tobacco sheets.
Description
Technical field
The present invention relates to tobacco leaf production technical field, particularly relate to a kind of nanofiber whisker paper strengthening agent prepares reconstituted tobacoo coating application in paper process.
Background technology
At present, China, as the big producing country of tobacco, all can produce a large amount of tobacco wastes every year, as offal and offal, how to utilize once again these discarded objects, protection of the environment, is urgent problem in tobacco business now.
Producing tobacco flake in method similar to papermaking be by by the extract of offal and offal, various perfume additive coatings in reconstituted tobacoo paper substrate, make to be that the offal of leftover pieces and offal are re-used originally, reach the effect reducing the harmful substances such as tar simultaneously.
Main raw material due to tobacco sheets by paper making method paper substrate is discarded offal and offal, fiber is shorter, adhesion between fiber is more weak, make reconstituted tobacoo in pressurized, cutting, clash into, tear, in the process of the series mechanical active force such as friction, broken rate is higher, have impact on yield and the product quality of final cigarette product.The method that tradition improves tobacco sheets by paper making method paper strength mainly adds more commercial wood pulp, but the method exists the shortcoming of two aspects: improve the suction taste variation that wood pulp consumption can make reconstituted tobacoo final, affect cigarette quality; Owing to improving wood pulp consumption within the scope of reduced levels, be difficult to produce substantial raising to tobacco sheets by paper making method surface strength, and reconstituted tobacoo surface strength is poor, easy dry linting falls end, is the principal element that broken rate is high.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of nanofiber whisker paper strengthening agent to prepare the application of reconstituted tobacoo coating in paper process, can improve tobacco sheets by paper making method surface strength, and minimizing is made broken.
The invention provides a kind of preparation method of nanofiber whisker paper strengthening agent, comprise the following steps:
(11) by deionized water and microcrystalline cellulose mixing, suspension is made;
(12) suspension to be placed in ice-water bath and to stir, adding sulfuric acid simultaneously, obtain mixed solution;
(13) mixed solution is heated, insulation hydrolysis;
(14) solution obtained after hydrolysis adopts deionized water centrifuge washing.
Preferably, in step (11), the concentration of described suspension is 5 ~ 15g/100ml.
Preferably, in step (12), in described mixed solution, the mass percent of sulfuric acid is 45 ~ 65%.
Preferably, in step (13), heating mixed solution to temperature is 40 ~ 80 DEG C rapidly, and described insulation hydrolysis time is 10 ~ 120 minutes.
Preferably, described being heated to be rapidly controlled heat time heating time in 5 minutes.
Preferably, in step (14), the number of times of described centrifuge washing is 5 ~ 10 times.
Present invention also offers a kind of nanofiber whisker paper strengthening agent, obtain according to aforementioned preparation process.
Present invention also offers a kind of aforementioned nanofiber whisker paper strengthening agent prepares reconstituted tobacoo coating application in paper process, comprise the following steps:
(21) the nanofiber whisker paper strengthening agent of preparation is dispersed in water, stirs, form mixed solution;
(22) mixed solution in step (21) is joined in the coating of coating to be impregnated.
Preferably, in step (21), in described mixed solution, the mass percent of fibrous crystal palpus paper strengthening agent is 0.2 ~ 0.8%, and mixing speed is 300 ~ 1000 revs/min.
Preferably, in step (22), the adding proportion that mixed solution adds coating to is 8 ~ 40kg/t.
Compared with prior art, the preparation method of nanofiber whisker paper strengthening agent provided by the invention, because nanofiber whisker is the cellulose with nanoscale, chemism is more much bigger than the cellulose with fibre dimensions, can produce Hydrogenbond relatively easily with fiber.This reinforcing agent is applied to after paper process prepares reconstituted tobacoo coating, owing to improving the surface strength of tobacco sheets by paper making method, so decrease the broken rate of process, reduces costs, improves the utilization rate of raw material.Simultaneously because this nanofiber whisker paper strengthening agent is pure cellulose, not containing lignin, add in tobacco sheets by paper making method coating and can not produce assorted gas, taste is inhaled in impact.
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with specific embodiment, the present invention is described in further detail.
The invention provides a kind of preparation method of nanofiber whisker paper strengthening agent, deionized water and microcrystalline cellulose is adopted to be mixed and made into suspension, microcrystalline cellulose and MCC, the suspension concentration made is 5 ~ 15g/100ml, water/microcrystalline cellulose suspension to be placed in ice-water bath and to keep stirring, simultaneously add sulfuric acid to hanging drop, until stop dripping sulfuric acid when the mass percent of sulfuric acid in mixed solution reaches 45 ~ 65%.Then solution is heated, make solution temperature in 5 minutes be 40 ~ 80 DEG C, and be incubated 10 ~ 120 minutes, be hydrolyzed.The solution of gained after hydrolysis is adopted deionized water centrifuge washing 5 ~ 10 times, just obtains nanofiber whisker paper strengthening agent.
Embodiment 1:
Deionized water and microcrystalline cellulose are mixed and made into suspension in proportion, and the suspension concentration made is 5g/100ml.Water/microcrystalline cellulose suspension to be placed in ice-water bath and to keep stirring, adding sulfuric acid to hanging drop, until stop dripping sulfuric acid when the mass percent of sulfuric acid in mixed solution reaches 65%.Then solution is heated, make solution temperature in 5 minutes reach 80 DEG C, and be incubated 120 minutes, be hydrolyzed.The solution obtained after hydrolysis is adopted deionized water centrifuge washing 5 times, namely obtains nanofiber whisker paper strengthening agent.
Embodiment 2:
Deionized water and microcrystalline cellulose are mixed and made into suspension in proportion, and the suspension concentration made is 10g/100ml.Water/microcrystalline cellulose suspension to be placed in ice-water bath and to keep stirring, adding sulfuric acid to hanging drop, until stop dripping sulfuric acid when the mass percent of sulfuric acid in mixed solution reaches 55%.Then solution is heated, make solution temperature in 5 minutes reach 60 DEG C, and be incubated 100 minutes, be hydrolyzed.The solution obtained after hydrolysis is adopted deionized water centrifuge washing 7 times, namely obtains nanofiber whisker paper strengthening agent.
Embodiment 3:
Deionized water and microcrystalline cellulose are mixed and made into suspension in proportion, and the suspension concentration made is 15g/100ml.Water/microcrystalline cellulose suspension to be placed in ice-water bath and to keep stirring, adding sulfuric acid to hanging drop, until stop dripping sulfuric acid when the mass percent of sulfuric acid in mixed solution reaches 45%.Then solution is heated, make solution temperature in 5 minutes reach 40 DEG C, and be incubated 80 minutes, be hydrolyzed.The solution of gained after hydrolysis is adopted deionized water centrifuge washing 9 times, namely obtains nanofiber whisker paper strengthening agent.
Present invention also offers a kind of nanofiber whisker paper strengthening agent prepares reconstituted tobacoo coating application in paper process, the nanofiber whisker paper strengthening agent utilizing above method to prepare is dispersed in water, stir, form mixed solution, in reinforcing agent and water mixed solution, fibrous crystal must the mass percent of paper strengthening agent be 0.2 ~ 0.8%, and mixing speed is 300 ~ 1000 revs/min.Join in the coating of coating to be impregnated by above mixed solution and nanofiber whisker strengthening for paper agent dispersing liquid, the adding proportion that mixed solution adds coating to is 8 ~ 40kg/t.
Embodiment 4:
To prepare and stand-by nanofiber whisker paper strengthening agent is dispersed in water, stirred, formed mixed solution, reinforcing agent is 0.8% with the mass percent of fibrous crystal palpus paper strengthening agent in water mixed solution, and mixing speed is 800 revs/min.Join in the coating of coating to be impregnated by above mixed solution and nanofiber whisker strengthening for paper agent dispersing liquid, the adding proportion that mixed solution adds coating to is 40kg/t.
Embodiment 5:
To prepare and stand-by nanofiber whisker paper strengthening agent is dispersed in water, stirred, formed mixed solution, reinforcing agent is 0.6% with the mass percent of fibrous crystal palpus paper strengthening agent in water mixed solution, and mixing speed is 600 revs/min.Join in the coating of coating to be impregnated by above mixed solution and nanofiber whisker strengthening for paper agent dispersing liquid, the adding proportion that mixed solution adds coating to is 30kg/t.
Embodiment 6:
To prepare and stand-by nanofiber whisker paper strengthening agent is dispersed in water, stirred, formed mixed solution, reinforcing agent is 0.6% with the mass percent of fibrous crystal palpus paper strengthening agent in water mixed solution, and mixing speed is 500 revs/min.Join in the coating of coating to be impregnated by above mixed solution and nanofiber whisker strengthening for paper agent dispersing liquid, the adding proportion that mixed solution adds coating to is 20kg/t.
Embodiment 7:
To prepare and stand-by nanofiber whisker paper strengthening agent is dispersed in water, stirred, formed mixed solution, reinforcing agent is 0.6% with the mass percent of fibrous crystal palpus paper strengthening agent in water mixed solution, and mixing speed is 500 revs/min.Join in the coating of coating to be impregnated by above mixed solution and nanofiber whisker strengthening for paper agent dispersing liquid, the adding proportion that mixed solution adds coating to is 8kg/t.
Nanofiber whisker paper strengthening agent is prepared according to above method, being conducive to reducing reconstituted tobacoo makes broken, the feature of this nanofiber whisker paper strengthening agent is to adopt microcrystalline cellulose to be raw material preparation, and the nanofiber whisker length of gained is 200 ~ 900 nanometers, and width is less than 20 nanometers.The component of reinforcing agent is pure fibre fractionation, without lignin components, adds interfibrous Hydrogenbond.Nanofiber whisker paper strengthening agent is applied in tobacco sheets by paper making method coating, tobacco sheets by paper making method surface strength can be improved.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. nanofiber whisker paper strengthening agent prepares an application for reconstituted tobacoo coating in paper process, it is characterized in that, comprises the following steps:
(21) nanofiber whisker paper strengthening agent is dispersed in water, stirs, form mixed solution;
(22) mixed solution in step (21) is joined in the coating of coating to be impregnated;
Wherein, in step (21), nanofiber whisker paper strengthening agent is prepared by following steps:
(11) by deionized water and microcrystalline cellulose mixing, suspension is made;
(12) suspension to be placed in ice-water bath and to stir, adding sulfuric acid simultaneously, obtain mixed solution;
(13) mixed solution is heated, insulation hydrolysis;
(14) solution obtained after hydrolysis adopts deionized water centrifuge washing;
Wherein, in step (13), heating mixed solution to temperature is 40 ~ 80 DEG C rapidly, and described insulation hydrolysis time is 100 ~ 120 minutes, and described being heated to be rapidly controls heat time heating time in 5 minutes;
In step (11), the concentration of described suspension is 5 ~ 15g/100mL.
2. nanofiber whisker paper strengthening agent according to claim 1 prepares the application of reconstituted tobacoo coating in paper process, it is characterized in that, in step (21), in described mixed solution, the mass percent of fibrous crystal palpus paper strengthening agent is 0.2 ~ 0.8%, and mixing speed is 300 ~ 1000 revs/min.
3. nanofiber whisker paper strengthening agent according to claim 1 is applied to the method for tobacco sheets by paper making method coating, it is characterized in that, in step (22), the adding proportion that mixed solution adds coating to is 8 ~ 40kg/t.
4. nanofiber whisker paper strengthening agent according to claim 1 prepares the application of reconstituted tobacoo coating in paper process, it is characterized in that, in step (12), in described mixed solution, the mass percent of sulfuric acid is 45 ~ 65%.
5. nanofiber whisker paper strengthening agent according to claim 1 prepares the application of reconstituted tobacoo coating in paper process, it is characterized in that, in step (14), the number of times of described centrifuge washing is 5 ~ 10 times.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107724180B (en) * | 2016-08-11 | 2020-04-21 | 中国科学院青岛生物能源与过程研究所 | Preparation method of cigarette paper with functions of supporting combustion and reducing CO discharge |
| US10196778B2 (en) * | 2017-03-20 | 2019-02-05 | R.J. Reynolds Tobacco Company | Tobacco-derived nanocellulose material |
| CN107242603B (en) * | 2017-06-29 | 2018-09-14 | 滁州卷烟材料厂 | A kind of production method of reconstituted tobacoo |
| CN107217532A (en) * | 2017-07-14 | 2017-09-29 | 云南中烟再造烟叶有限责任公司 | The method that wood pulp cellulose in papermaking-method reconstituted tobaccos is reduced using nano-cellulose |
| CN107212457A (en) * | 2017-07-24 | 2017-09-29 | 云南中烟再造烟叶有限责任公司 | A kind of method for improving tobacco sheets by paper making method slurry retention and water filtering performance |
| CN108755241A (en) * | 2018-05-23 | 2018-11-06 | 天津科技大学 | A method of improving bamboo pulp paper for daily use body paper water imbibition |
| US10808045B2 (en) | 2018-09-21 | 2020-10-20 | King Abdulaziz University | Method for converting micro- to nano-crystalline cellulose |
| CN110169589A (en) * | 2019-04-29 | 2019-08-27 | 广西中烟工业有限责任公司 | A kind of preparation method of graphene modified reconstituted tobacco |
| CN110934323A (en) * | 2020-01-07 | 2020-03-31 | 湖北中烟工业有限责任公司 | Method for preparing tobacco sheets by compounding gypsum whiskers |
| CN112056609B (en) * | 2020-09-10 | 2022-09-20 | 河南中烟工业有限责任公司 | Production method of heating cigarette paper-making method sheet |
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| CN101509209A (en) * | 2009-03-10 | 2009-08-19 | 中国林业科学研究院林产化学工业研究所 | Method of preparing clubbed nano-cellulose |
| CN102057105A (en) * | 2008-04-03 | 2011-05-11 | 英文蒂亚有限责任公司 | Composition for coating of printing paper |
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| CN102812182A (en) * | 2010-03-15 | 2012-12-05 | 芬欧汇川有限公司 | Method for improving the properties of a paper product and forming an additive component and the corresponding paper product and additive component and use of the additive component |
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| CN102057105A (en) * | 2008-04-03 | 2011-05-11 | 英文蒂亚有限责任公司 | Composition for coating of printing paper |
| CN101509209A (en) * | 2009-03-10 | 2009-08-19 | 中国林业科学研究院林产化学工业研究所 | Method of preparing clubbed nano-cellulose |
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