CN112609512A - Corrugated paper and preparation method thereof - Google Patents
Corrugated paper and preparation method thereof Download PDFInfo
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- CN112609512A CN112609512A CN202011443912.8A CN202011443912A CN112609512A CN 112609512 A CN112609512 A CN 112609512A CN 202011443912 A CN202011443912 A CN 202011443912A CN 112609512 A CN112609512 A CN 112609512A
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- corrugated paper
- moisture
- parts
- proof agent
- coating
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
- D21H19/824—Paper comprising more than one coating superposed two superposed coatings, both being non-pigmented
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/143—Agents preventing ageing of paper, e.g. radiation absorbing substances
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
Abstract
The application relates to the field of corrugated paper, and particularly discloses a preparation method of corrugated paper and the obtained corrugated paper. A preparation method of corrugated paper comprises the following steps: (1) preparing corrugated base paper; (2) pretreatment: coating an adhesive on the surface of the corrugated base paper to form an adhesive layer; (3) coating a moisture-proof agent outside the bonding layer; the moisture-proof agent comprises the following components in parts by weight: 15-20 parts of methyl silicone oil; 10-20 parts of oxidized polyethylene wax; 1-5 parts of rosin; 1-3 parts of stearic acid; 5-12 parts of acrylic resin; 40-70 parts of water. The preparation method has the advantages of improving the adhesion and stability of the moisture-proof agent on corrugated paper.
Description
Technical Field
The application relates to the field of corrugated paper, in particular to a preparation method of corrugated paper and the obtained corrugated paper.
Background
Corrugated paper, as the most common packaging material at present, has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, convenient storage and transportation and the like.
With the increase of the cold chain packaging and transportation market scale of fresh chilled meat, fruits and vegetables, medical treatment and the like in recent years, corrugated paper with waterproof and moistureproof performances gradually appears in the market, daily cold chain transportation is met, the permeation of water to the corrugated paper is reduced, and the strength of a packaging material in the transportation process is guaranteed.
The mode of present dampproofing and waterproofing can be at the carton outside coating one deck dampproof agent, but the adhesion between dampproof agent and the corrugated paper is not strong, can lead to the dampproof course to peel off easily, influences product stability.
Disclosure of Invention
In order to improve the adhesion and stability of the moisture-proof agent on corrugated paper, the application provides a preparation method of corrugated paper and the corrugated paper obtained by the preparation method.
In a first aspect, the present application provides the following technical solutions: a preparation method of corrugated paper comprises the following steps:
(1) preparing corrugated base paper;
(2) pretreatment: coating an adhesive on the surface of the corrugated base paper to form an adhesive layer;
(3) coating a moisture-proof agent outside the bonding layer;
the moisture-proof agent comprises the following components in parts by weight:
15-20 parts of methyl silicone oil;
10-20 parts of oxidized polyethylene wax;
1-5 parts of rosin;
1-3 parts of stearic acid;
5-12 parts of acrylic resin;
40-70 parts of water.
Through adopting above-mentioned technical scheme, before the corrugated paper carries out the coating of dampproof agent, increase the adhesive linkage earlier, the adhesive linkage realizes with the bonding on corrugated paper surface, realize simultaneously with the adhesive action of dampproof agent, the even coating of adhesive linkage can improve the even degree of dampproof agent on the one hand, on the other hand improves the bonding effect of dampproof agent on the corrugated paper surface.
In the moisture-proof agent, methyl silicone oil, oxidized polyethylene wax, rosin and acrylic resin are emulsified and mixed in water by stearic acid, and then melted and coated on the surface of the bonding layer. The silicone oil provides a good flowing carrier, and can play a good water-proof role while ensuring the whole fluidity of the moisture-proof agent. After the acrylic resin is formed into a film, the moisture-proof agent can be uniformly fixed on the surface of the bonding layer to form a moisture-proof layer so as to realize the moisture-proof effect; the rosin is added to play a role in skid resistance, and the possibility that the conveying is influenced by the influence of the coating of the moisture-proof agent on the surface smoothness of the corrugated paper is reduced.
Further, the adhesive is a polyvinyl alcohol aqueous solution with the mass fraction of 5-8%.
By adopting the technical scheme, the film forming is quick, the raw materials are easy to obtain, and the adhesive plays a good role in connecting with cellulose in the paper box and can also provide a bonding basis for the moisture-proof agent.
Further, the step (2) is preprocessing: coating 60-70% ethanol water solution on the surface of the corrugated paper, and coating an adhesive on the surface of the corrugated paper to form an adhesive layer.
Through adopting above-mentioned technical scheme, can accelerate the dry filming of adhesive linkage on the one hand, take away the unnecessary water in corrugated paper surface when ethanol volatilizees simultaneously, on the other hand can realize surface decontamination, improves the adhesive strength of adhesive linkage and corrugated paper surface. Further, the moisture-proof agent also comprises 0.5-1.2 parts of dehydroxanthan gum.
By adopting the technical scheme, better waterproof and moistureproof effects and aging resistance can be achieved. Further, the mass part ratio of the rosin to the dehydro xanthan gum is (3-4): 1.
by adopting the technical scheme, better waterproof effect and aging resistance can be obtained.
Further, the step (3) is to apply the moisture-proof agent when the adhesive layer is not completely dried.
By adopting the technical scheme, the moisture is not completely volatilized, the bonding effect of the bonding layer is better, and the coating uniformity of the moisture-proof agent can be further improved, so that the water-proof and moisture-proof stability of the corrugated paper is ensured; in addition, the dehydro xanthan gum and the bonding layer form further connection with polyvinyl alcohol through water molecules, so that the bonding effect of the bonding layer is improved.
Further, the moisture resistant agent is prepared by the following steps: heating rosin, stearic acid and water to the temperature of 110-plus 135 ℃, preserving heat, uniformly stirring, adding methyl silicone oil, oxidized polyethylene wax and acrylic resin after dissolution, cooling after emulsification, adding hydrogenated reduced rubber in the cooling process, and uniformly stirring to obtain the moisture-proof agent.
By adopting the technical scheme, the uniform and stable moisture-proof agent is obtained.
In a second aspect, the present application provides the following technical solutions: corrugated paper obtained by the production method according to any one of claims 1 to 7.
In summary, the present application has the following beneficial effects:
1. because this application adopts the adhesive linkage as the basement of dampproof agent coating, the even coating of adhesive linkage can improve the even degree of dampproof agent on the one hand, and on the other hand improves the bonding effect of dampproof agent on corrugated paper surface.
2. Because this application adopts polyvinyl alcohol aqueous solution as the adhesive, plays fine connection effect with the cellulose in the carton, also can provide the bonding basis for the dampproof agent.
3. Because this application adopts dehydrogenation xanthan gum, can play better dampproofing and waterproofing effect and ageing resistance.
4. Due to the fact that the rosin and the dehydrogenated xanthan gum are compounded, better waterproof effect and aging resistance can be achieved.
Detailed Description
Examples
Example 1: a preparation method of corrugated paper comprises the following steps:
(1) preparing corrugated base paper: the raw materials are ground into pulp, formed by a net part, squeezed and dried; the raw materials are hardwood pulp and waste paper pulp with the mass part ratio of 5:1, the waste paper pulp is obtained by crushing recycled corrugated paper, and the beating degree of the pulp is 50 DEG SR; sending the corrugated paper into a net part of a paper machine for forming, squeezing and drying to obtain corrugated raw paper;
(2) pretreatment: coating adhesive on the surface of the corrugated base paper by a coating roller, wherein the temperature of the coating roller is 70 ℃, and forming an adhesive layer after drying by hot air at 40 ℃, and the coating amount of the adhesive is 70g/m2(ii) a The adhesive is starch glue.
(3) Coating a moisture-proof agent outside the bonding layer: and coating a moisture-proof agent on the surface of the adhesive layer in a roller coating mode, and drying by hot air at 40 ℃ to form a moisture-proof layer to obtain the corrugated paper. The formula of the moisture-proof agent is as follows: 15kg of methyl silicone oil, 20kg of oxidized polyethylene wax, 12kg of acrylic resin, 1kg of rosin, 3kg of stearic acid and 40kg of water; the preparation method of the moisture-proof agent comprises the following steps: heating rosin, stearic acid and water to 110 ℃, preserving heat, uniformly stirring, adding methyl silicone oil, oxidized polyethylene wax and acrylic resin after dissolution, cooling after emulsification, and uniformly stirring to obtain the moisture-proof agent.
Example 2: the preparation method of the corrugated paper is different from the embodiment 1 in the components and corresponding mass of the moisture-proof agent, and the formula of the moisture-proof agent is as follows: 18kg of methyl silicone oil, 10kg of oxidized polyethylene wax, 5kg of acrylic resin, 2kg of rosin, 1kg of stearic acid and 50kg of water. The preparation method of the moisture-proof agent comprises the following steps: heating rosin, stearic acid and water to 120 ℃, preserving heat, uniformly stirring, adding methyl silicone oil, oxidized polyethylene wax and acrylic resin after dissolution, cooling after emulsification, and uniformly stirring to obtain the moisture-proof agent.
Example 3: the preparation method of the corrugated paper is different from the embodiment 1 in the components and corresponding mass of the moisture-proof agent, and the formula of the moisture-proof agent is as follows: 20kg of methyl silicone oil, 15kg of oxidized polyethylene wax, 10kg of acrylic resin, 5kg of rosin, 2kg of stearic acid and 70kg of water. The preparation method of the moisture-proof agent comprises the following steps: heating rosin, stearic acid and water to 135 ℃, preserving heat, uniformly stirring, adding methyl silicone oil, oxidized polyethylene wax and acrylic resin after dissolution, cooling after emulsification, and uniformly stirring to obtain the moisture-proof agent.
Example 4: the corrugated paper is different from the corrugated paper in example 2 in that the adhesive is a polyvinyl alcohol aqueous solution with the mass fraction of 5%, and the grade of the polyvinyl alcohol is 1799.
Example 5: the corrugated paper is different from the corrugated paper in example 2 in that the adhesive is a polyvinyl alcohol aqueous solution with the mass fraction of 6.5%, and the grade of the polyvinyl alcohol is 1799.
Example 6: the corrugated paper is different from the corrugated paper in example 2 in that the adhesive is 8 mass percent polyvinyl alcohol aqueous solution, and the grade of the polyvinyl alcohol is 1799.
Example 7: the preparation method of the corrugated paper is different from the embodiment 5 in that ethanol water solution with the mass fraction of 60% is sprayed on the surface of the corrugated paper at the temperature of 20 +/-5 ℃, and then the surface of the corrugated paper is coated with the adhesive. The coating amount of the ethanol aqueous solution was 100g/m2。
Example 8: the preparation method of the corrugated paper is different from the embodiment 5 in that ethanol water solution with the mass fraction of 70% is sprayed on the surface of the corrugated paper at the temperature of 20 +/-5 ℃, and then the surface of the corrugated paper is coated with the adhesive. The coating amount of the ethanol aqueous solution was 100g/m2。
Example 9: a corrugated paper manufacturing method, which is different from the embodiment 8 in that the moisture-proof agent further comprises 0.5kg of dehydro xanthan gum, and the manufacturing method of the moisture-proof agent is as follows: heating rosin, stearic acid and water to 110 ℃, preserving heat, uniformly stirring, adding methyl silicone oil, oxidized polyethylene wax and acrylic resin after dissolution, cooling after emulsification, adding hydrogenated reduced rubber when the temperature is reduced to 40 ℃, and uniformly stirring to obtain the moisture-proof agent.
Example 10: a method of making corrugated board, differing from example 9 in that the mass of dehydro xanthan gum in the moisture resistant agent is 1.2 kg.
Example 11: a corrugated paper making method, which is different from the embodiment 10 in that the mass of rosin in the moisture-proof agent is 3.6 kg.
Example 12: a method for producing corrugated cardboard, which is different from example 11 in that after the adhesive is applied, it is dried by hot air, and when it is not completely dried, the moisture-proof agent is applied.
Example 13: the corrugated paper is prepared by the method different from the embodiment 1 in that the coating of the adhesive is followed by the drying by hot air, and the coating of the moisture-proof agent is carried out when the coating is not completely dried.
In the above embodiment, the acrylic resin is an acrylic resin emulsion.
Examples 14 to 26: corrugated paper, obtained by the preparation method of examples 1-13.
Comparative example
Comparative example 1: a corrugated paper which differs from that of example 13 in that the preparation process does not include a pretreatment step.
Comparative example 2: corrugated paper differs from example 13 in that the pretreatment step of the manufacturing process is omitted and example 1, disclosed in chinese patent publication No. CN105350396A, is used as a moisture barrier.
Characterization test:
1. test of waterproof and moistureproof effects
Test samples: examples 14-26 and comparative examples 1-2 were formed into three-ply corrugated paperboard to give examples 14-26 and comparative examples 1-2, for a total of 15 test samples.
The test method comprises the following steps: the test samples 14 to 26 and the comparative samples 1 to 2 were subjected to a water drop test, each drop of the water drop was 0.1ml, the drop was dropped once every 3 seconds, the drop was continuously dropped from directly above the test sample to the surface of the test sample, and whether or not there was any penetration was observed for 24 hours, and the penetration was marked as x and the non-penetration was marked as o.
And (3) test results: the results of the moisture and water repellency test are reported in table 1.
TABLE 1 moisture and water resistance test results
And (3) data analysis: as can be seen from the data in Table 1, both the working samples and the comparative samples can achieve better waterproofing effect.
2. Test object of aging resistance property: examples 14-26 and comparative examples 1-2 were formed into three-ply corrugated paperboard to give examples 14-26 and comparative examples 1-2, for a total of 15 test samples.
The test method comprises the following steps: on the basis of the test of '1, waterproof and moistureproof effect test', each test sample comprises 15 parallel samples, three parallel samples form one group, and each test sample comprises two groups of parallel samples, namely a group A, a group B, a group C, a group D and a group E. The group A is placed in an aging furnace at 100 ℃ to be treated for 12 hours for aging treatment, the group B is placed in an aging furnace at 100 ℃ to be treated for 15 hours for aging treatment, the group C is placed in an aging furnace at 100 ℃ to be treated for 16 hours for aging treatment, the group D is placed in an aging furnace at 100 ℃ to be treated for 17 hours for aging treatment, and the group E is placed in an aging furnace at 100 ℃ to be treated for 18 hours for aging treatment. And (3) observing that the A group, the B group, the C group, the D group and the E group are subjected to 24-hour titration test after aging treatment, recording the performance, comparing the performance with the result in the test 1, and observing whether the change exists.
And (3) test results: the results of the aging resistance test are reported in table 2.
TABLE 2 record of the aging resistance test results
And (3) data analysis: the waterproof performance after the aging test can reflect the stability and the bonding strength of the moisture-proof layer on the corrugated paper surface. As can be seen from the data in Table 2, the samples were subjected to the 15-hour aging test, the sample 2 was subjected to the 12-hour aging test, the sample 1 had poor aging resistance, and the moisture barrier stability and adhesive strength were the lowest.
Comparing all the examples, examples 14-16 can endure 15h aging test, and on the basis of example 15, examples 17-21 can endure 16h aging test by using polyvinyl alcohol aqueous solution as adhesive, which shows that the combination of polyvinyl alcohol and moisture-proof agent can improve the bonding strength of the moisture-proof agent and the corrugated paper surface and the stability of the moisture-proof layer. Examples 22-24 have added dehydroxanthan gum to example 21, which has better aging resistance; in addition, the use amount ratio of the rosin and the dehydro xanthan gum is limited in the embodiment 22 and the embodiment 24, and the aging resistance is further improved. The reasons may be: the dehydroxanthan gum is uniformly distributed in the moisture-proof agent, and a secondary film is formed on the basis of the acrylic resin film forming, so that the film forming strength is improved; in addition, the dehydro xanthan gum has a water-catching function and can adsorb water molecules in the adhesive layer to form connection with polyvinyl alcohol in the adhesive layer.
Example 25 had the best resistance to ageing, probably because: ethanol permeates to the surface of the corrugated paper and permeates cellulose molecules, so that more space is provided for the contact of polyvinyl alcohol and cellulose and the formation of hydrogen bonds, and a good connection framework between the corrugated paper and the bonding layer is built.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The preparation method of the corrugated paper is characterized by comprising the following steps:
(1) preparing corrugated base paper;
(2) pretreatment: coating an adhesive on the surface of the corrugated base paper to form an adhesive layer;
(3) coating a moisture-proof agent outside the bonding layer;
the moisture-proof agent comprises the following components in parts by weight:
15-20 parts of methyl silicone oil;
10-20 parts of oxidized polyethylene wax;
1-5 parts of rosin;
1-3 parts of stearic acid;
5-12 parts of acrylic resin;
40-70 parts of water.
2. A method for preparing corrugated paper as claimed in claim 1, wherein the binder is 5-8% polyvinyl alcohol aqueous solution by mass.
3. A method of making corrugated paper as claimed in claim 1 or claim 2, wherein said step (2) of pre-treating: coating 60-70% ethanol water solution on the surface of the corrugated paper, and coating an adhesive on the surface of the corrugated paper to form an adhesive layer.
4. A process for making corrugated paper as claimed in claim 2, wherein said moisture barrier agent further comprises 0.5 to 1.2 parts dehydroxanthan gum.
5. The corrugated paper preparation method as claimed in claim 4, wherein the mass part ratio of the rosin to the dehydro xanthan gum is (3-4): 1.
6. a method for making corrugated paper as claimed in claim 4, wherein step (3) is carried out by applying a moisture-proof agent while the adhesive layer is not completely dried.
7. A method of making corrugated paper as claimed in claim 4, wherein the moisture barrier is prepared by: heating rosin, stearic acid and water to the temperature of 110-plus 135 ℃, preserving heat, uniformly stirring, adding methyl silicone oil, oxidized polyethylene wax and acrylic resin after dissolution, cooling after emulsification, adding hydrogenated reduced rubber in the cooling process, and uniformly stirring to obtain the moisture-proof agent.
8. Corrugated paper obtained by the production method according to any one of claims 1 to 7.
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| CN202011443912.8A CN112609512B (en) | 2020-12-08 | 2020-12-08 | Corrugated paper and preparation method thereof |
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| CN107541992A (en) * | 2016-06-23 | 2018-01-05 | 天津市英坦圣纸制品有限责任公司 | A kind of corrugated board anti-blushing agent |
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2020
- 2020-12-08 CN CN202011443912.8A patent/CN112609512B/en active Active
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| CN1157870A (en) * | 1996-12-27 | 1997-08-27 | 翟广玉 | Corrugated paper box dampproof glazing agent |
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| CN202391049U (en) * | 2011-11-24 | 2012-08-22 | 张梦之 | Multifunctional and integrated paper honeycomb-decorated board |
| CN107541992A (en) * | 2016-06-23 | 2018-01-05 | 天津市英坦圣纸制品有限责任公司 | A kind of corrugated board anti-blushing agent |
| CN107663813A (en) * | 2016-07-29 | 2018-02-06 | 华南理工大学 | A kind of damp-prrof packing paper and compound glue application solution and their preparation method |
| CN107031163A (en) * | 2017-04-10 | 2017-08-11 | 滁州卷烟材料厂 | A kind of wet sensitive colour changing corrugated case |
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| 裘炳毅: "《现代化妆品科学与技术 中》", 31 March 2016, 中国轻工业出版社 * |
| 韩长日: "《造纸用化学品生产工艺与技术》", 31 May 2019, 科学技术文献出版社 * |
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| CN112609512B (en) | 2022-08-23 |
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