CN112376326A - Preparation method for preparing high-strength corrugated paper from reclaimed materials - Google Patents
Preparation method for preparing high-strength corrugated paper from reclaimed materials Download PDFInfo
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- CN112376326A CN112376326A CN202011303233.0A CN202011303233A CN112376326A CN 112376326 A CN112376326 A CN 112376326A CN 202011303233 A CN202011303233 A CN 202011303233A CN 112376326 A CN112376326 A CN 112376326A
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- Prior art keywords
- calcium carbonate
- corrugated paper
- recycled
- strength
- paper
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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
- D21H27/30—Multi-ply
- D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/08—Corrugated paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/26—All layers being made of paper or paperboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/12—Coating on the layer surface on paper layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
Abstract
The invention discloses a high-strength corrugated paper prepared by reclaimed materials, which is mainly prepared from short fibers obtained by crushing and dissociating old corrugated box paper, wherein the fibers are low in price and wide in source, but the prepared corrugated paper is low in strength. The preparation method for preparing the high-strength corrugated paper by using the reclaimed materials has the advantages of low cost, wide raw material source, high strength and remarkable economic benefit.
Description
Technical Field
The invention relates to the technical field of high-strength corrugated paper, in particular to a preparation method for preparing high-strength corrugated paper by using reclaimed materials.
Background
The corrugated board is light in weight, cheap in price, wide in application, simple in manufacture, and capable of being recycled and even reused at the beginning of 18 th century and 19 th century, so that the application of the corrugated board is remarkably increased. By the beginning of the 20 th century, the packaging has been widely popularized, popularized and applied for various commodities. Packaging containers made using corrugated paperboard have enjoyed great success in competing with a variety of packaging materials, due to their unique properties and advantages for the beautification and protection of the contents. Becoming one of the main materials for manufacturing packaging containers which have not been used for a long time and have been developed rapidly so far.
The corrugated paper board is made up by using face paper, liner paper, core paper and corrugated paper which are made into corrugated form through the processes of adhesion. According to the requirement of commodity package, the corrugated board can be processed into single-sided corrugated boards, three-layer corrugated boards, five-layer corrugated boards, seven-layer corrugated boards, eleven-layer corrugated boards and the like. Single-sided corrugated cardboard is commonly used as a protective liner for packaging goods or to make portable card grids and dunnage to protect goods from shock or impact during transportation for storage, and three-ply and five-ply corrugated cardboard is commonly used in corrugated boxes. The package of many commodities is simple and exquisite by three-layer or five-layer corrugated paper board, and beautiful colorful figures and pictures are printed on the surface of the corrugated paper box or the corrugated paper box, thus not only protecting the internal commodities, but also publicizing and beautifying the internal commodities. A plurality of corrugated cases made of three-layer or five-layer corrugated boards or corrugated cases are directly sold on a sales counter to form a sales package. The seven-layer or eleven-layer corrugated board is mainly used for manufacturing packing cases for electromechanics, flue-cured tobaccos, furniture, motorcycles, large-scale household appliances and the like. In specific commodities, the corrugated board can be combined to form an inner sleeve box and an outer sleeve box, so that the corrugated board is convenient to manufacture and is convenient for containing, storing and transporting commodities. With the environmental protection requirement and the requirement of the national relevant policy, the commodity package made of the corrugated board has the trend of gradually replacing the wooden box package.
The traditional production process of the reclaimed corrugated paper takes waste cardboard paper as a main production raw material, and the corrugated paper is produced by depending on the production process of the cardboard paper machine, so that the produced corrugated paper has poor fracture strength, poor environmental protection and higher production cost.
The invention researches a preparation method for preparing high-strength corrugated paper by using reclaimed materials according to the current market demand.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a preparation method for preparing high-strength corrugated paper by using reclaimed materials.
The technical scheme of the invention is as follows:
a preparation method for preparing high-strength corrugated paper by using reclaimed materials comprises the following steps:
A. crushing limestone and calcining at the temperature of 800-1000 ℃ for 2-3h to obtain calcium hydroxide;
B. b, continuously digesting the calcium hydroxide obtained in the step A with water; aging for 1-3 h;
C. putting the calcium hydroxide into a carbonization tower for carbonization operation to obtain calcium carbonate with the pH value of 7.0-7.6;
D. carbonizing the obtained calcium carbonate, dissolving the calcium carbonate in water, and adding a protein reinforcing agent to obtain mixed slurry;
E. carrying out high-speed ball milling on the obtained mixed slurry, and then filtering to remove impurities to obtain calcium carbonate fine slurry;
F. dehydrating to obtain calcium carbonate powder;
G. adding calcium carbonate powder into recycled paper pulp in a filling mode, and making the calcium carbonate powder and the recycled paper pulp together to prepare a surface layer, a core layer and a bottom layer of the high-strength corrugated paper;
H. and (3) after the surface layer, the core layer and the bottom layer of the high-strength corrugated paper are compounded, spraying a polyurethane coating on the surface, and performing waterproof treatment.
Preferably, in the step D, the mass ratio of the calcium carbonate to the protein enhancer is 1: (0.05-0.12).
Preferably, in the step D, the protein enhancer is ultra-high-gel protein powder.
Preferably, in the step D, the gel strength of the ultra-high gel degree protein powder is 1350--2。
Preferably, in the step G, the proportion of calcium carbonate in the recycled material pulp is 15-20%.
Preferably, in the step G, the recycled pulp is obtained by pulping the dissociated short fibers into 38 to 40 ° SR by using the old corrugated cardboard paper, and then adding 1 to 2% recycled refractory brick fine powder.
Preferably, the main components of the fine powder of the recycled refractory bricks are alumina and magnesia; the grain size of the recovered refractory brick fine powder is 800 meshes.
The invention has the advantages that: the main raw material of the high-strength corrugated paper is short fiber after the old corrugated paper is smashed and dissociated, the fiber is low in price and wide in source, but the strength of the prepared corrugated paper is low, so a small amount of recovered refractory brick fine powder is added, but the color of the recovered refractory brick fine powder is dark, the application range of the corrugated paper is seriously influenced, and in order to improve the strength and the appearance of the corrugated paper, specially-made calcium carbonate powder and ultrahigh-gelation-degree protein powder are also added to serve as protein reinforcing agents. The preparation method for preparing the high-strength corrugated paper by using the reclaimed materials has the advantages of low cost, wide raw material source, high strength and remarkable economic benefit.
Detailed Description
Example 1:
a preparation method for preparing high-strength corrugated paper by using reclaimed materials comprises the following steps:
A. crushing limestone, and calcining at 850 ℃ for 2.5h to obtain calcium hydroxide;
B. b, continuously digesting the calcium hydroxide obtained in the step A with water; and aging for 1.5 h;
C. putting the calcium hydroxide into a carbonization tower for carbonization operation to obtain calcium carbonate with the pH value of 7.2;
D. carbonizing the obtained calcium carbonate, dissolving the calcium carbonate in water, and adding a protein reinforcing agent to obtain mixed slurry;
E. carrying out high-speed ball milling on the obtained mixed slurry, and then filtering to remove impurities to obtain calcium carbonate fine slurry;
F. dehydrating to obtain calcium carbonate powder;
G. adding calcium carbonate powder into recycled paper pulp in a filling mode, and making the calcium carbonate powder and the recycled paper pulp together to prepare a surface layer, a core layer and a bottom layer of the high-strength corrugated paper;
H. and (3) after the surface layer, the core layer and the bottom layer of the high-strength corrugated paper are compounded, spraying a polyurethane coating on the surface, and performing waterproof treatment.
In the step D, the mass ratio of the calcium carbonate to the protein reinforcing agent is 1: 0.08.
in the step D, the protein reinforcing agent is ultrahigh-gel-degree protein powder; the gel strength of the protein powder with ultrahigh gel degree is 1380g cm-2。
In the step G, the proportion of calcium carbonate in the recycled pulp is 16%.
In the step G, the recycled material paper pulp is obtained by pulping the broken and dissociated short fibers of the old corrugated cardboard paper to a beating degree of 38-40 DEG SR and then adding 1.8% of recycled refractory brick fine powder.
The main components of the recovered refractory brick fine powder are alumina and magnesia; the grain size of the recovered refractory brick fine powder is 800 meshes.
Example 2:
a preparation method for preparing high-strength corrugated paper by using reclaimed materials comprises the following steps:
A. crushing limestone, and calcining at 1000 ℃ for 2h to obtain calcium hydroxide;
B. b, continuously digesting the calcium hydroxide obtained in the step A with water; and aging for 3 h;
C. putting the calcium hydroxide into a carbonization tower for carbonization operation to obtain calcium carbonate with the pH value of 7.0;
D. carbonizing the obtained calcium carbonate, dissolving the calcium carbonate in water, and adding a protein reinforcing agent to obtain mixed slurry;
E. carrying out high-speed ball milling on the obtained mixed slurry, and then filtering to remove impurities to obtain calcium carbonate fine slurry;
F. dehydrating to obtain calcium carbonate powder;
G. adding calcium carbonate powder into recycled paper pulp in a filling mode, and making the calcium carbonate powder and the recycled paper pulp together to prepare a surface layer, a core layer and a bottom layer of the high-strength corrugated paper;
H. and (3) after the surface layer, the core layer and the bottom layer of the high-strength corrugated paper are compounded, spraying a polyurethane coating on the surface, and performing waterproof treatment.
In the step D, the mass ratio of the calcium carbonate to the protein reinforcing agent is 1: 0.12.
in the step D, the protein reinforcing agent is ultrahigh-gel-degree protein powder; the gel strength of the protein powder with ultrahigh gel degree is 1350g cm-2。
In the step G, the proportion of calcium carbonate in the recycled pulp is 20%.
In the step G, the recycled material paper pulp is obtained by pulping the broken and dissociated short fibers of the old corrugated cardboard paper to a beating degree of 38-40 DEG SR and adding 1% of recycled refractory brick fine powder.
The main components of the recovered refractory brick fine powder are alumina and magnesia; the grain size of the recovered refractory brick fine powder is 800 meshes.
Example 3:
a preparation method for preparing high-strength corrugated paper by using reclaimed materials comprises the following steps:
A. crushing limestone, and calcining at 800 ℃ for 3h to obtain calcium hydroxide;
B. b, continuously digesting the calcium hydroxide obtained in the step A with water; and aging for 1 h;
C. putting the calcium hydroxide into a carbonization tower for carbonization operation to obtain calcium carbonate with the pH value of 7.6;
D. carbonizing the obtained calcium carbonate, dissolving the calcium carbonate in water, and adding a protein reinforcing agent to obtain mixed slurry;
E. carrying out high-speed ball milling on the obtained mixed slurry, and then filtering to remove impurities to obtain calcium carbonate fine slurry;
F. dehydrating to obtain calcium carbonate powder;
G. adding calcium carbonate powder into recycled paper pulp in a filling mode, and making the calcium carbonate powder and the recycled paper pulp together to prepare a surface layer, a core layer and a bottom layer of the high-strength corrugated paper;
H. and (3) after the surface layer, the core layer and the bottom layer of the high-strength corrugated paper are compounded, spraying a polyurethane coating on the surface, and performing waterproof treatment.
In the step D, the mass ratio of the calcium carbonate to the protein reinforcing agent is 1: 0.05.
in the step D, the protein reinforcing agent is ultrahigh-gel-degree protein powder; the gel strength of the protein powder with ultrahigh gel degree is 1500g cm-2。
In the step G, the proportion of calcium carbonate in the recycled pulp is 1%.
In the step G, the recycled material paper pulp is obtained by pulping the broken and dissociated short fibers of the old corrugated cardboard paper to a beating degree of 38-40 DEG SR and then adding 2% recycled refractory brick fine powder.
The main components of the recovered refractory brick fine powder are alumina and magnesia; the grain size of the recovered refractory brick fine powder is 800 meshes.
Comparative example 1
The protein enhancer of example 1 was removed and the remaining preparation conditions were unchanged.
Test example:
the samples of examples 1-3 and comparative example 1 were tested and the following test data was obtained.
Table 1: the results of the sample tests of examples 1-3 and comparative example 1;
| example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Quantitative g/cm2 | 75 | 75 | 75 | 75 |
| Transverse ring crush index N m/g | 8.7 | 8.5 | 9.2 | 6.4 |
| Burst index kPa.m2/g | 3.8 | 3.7 | 3.9 | 3.1 |
| Transverse folding endurance factor | 55 | 55 | 57 | 38 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The preparation method for preparing the high-strength corrugated paper by using the reclaimed materials is characterized by comprising the following steps of:
A. crushing limestone and calcining at the temperature of 800-1000 ℃ for 2-3h to obtain calcium hydroxide;
B. b, continuously digesting the calcium hydroxide obtained in the step A with water; aging for 1-3 h;
C. putting the calcium hydroxide into a carbonization tower for carbonization operation to obtain calcium carbonate with the pH value of 7.0-7.6;
D. carbonizing the obtained calcium carbonate, dissolving the calcium carbonate in water, and adding a protein reinforcing agent to obtain mixed slurry;
E. carrying out high-speed ball milling on the obtained mixed slurry, and then filtering to remove impurities to obtain calcium carbonate fine slurry;
F. dehydrating to obtain calcium carbonate powder;
G. adding calcium carbonate powder into recycled paper pulp in a filling mode, and making the calcium carbonate powder and the recycled paper pulp together to prepare a surface layer, a core layer and a bottom layer of the high-strength corrugated paper;
H. and (3) after the surface layer, the core layer and the bottom layer of the high-strength corrugated paper are compounded, spraying a polyurethane coating on the surface, and performing waterproof treatment.
2. The method for preparing high-strength corrugated paper from reclaimed materials according to claim 1, wherein in the step D, the mass ratio of the calcium carbonate to the protein reinforcing agent is 1: (0.05-0.12).
3. The method for preparing high-strength corrugated paper from reclaimed materials according to claim 1, wherein in the step D, the protein reinforcing agent is ultrahigh-gel-degree protein powder.
4. The method as claimed in claim 3, wherein the gel strength of the ultra-high gel strength protein powder in step D is 1350--2。
5. A method for preparing high-strength corrugated paper from recycled materials as claimed in claim 1, wherein in step G, the recycled pulp contains calcium carbonate 15-20%.
6. The method for preparing high-strength corrugated paper from recycled materials as claimed in claim 1, wherein in the step G, the recycled paper pulp is obtained by pulping the disintegrated short fibers of the old corrugated cardboard paper to a beating degree of 38-40 ° SR and adding 1-2% of the recycled refractory brick fine powder.
7. The method of making high strength corrugated paper from regrind as claimed in claim 6 wherein the recycled refractory brick fines are comprised primarily of alumina and magnesia; the grain size of the recovered refractory brick fine powder is 800 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011303233.0A CN112376326A (en) | 2020-11-19 | 2020-11-19 | Preparation method for preparing high-strength corrugated paper from reclaimed materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011303233.0A CN112376326A (en) | 2020-11-19 | 2020-11-19 | Preparation method for preparing high-strength corrugated paper from reclaimed materials |
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| CN112376326A true CN112376326A (en) | 2021-02-19 |
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| CN202011303233.0A Withdrawn CN112376326A (en) | 2020-11-19 | 2020-11-19 | Preparation method for preparing high-strength corrugated paper from reclaimed materials |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015196910A (en) * | 2014-03-31 | 2015-11-09 | 王子ホールディングス株式会社 | Manufacturing method for corrugated board base paper |
| CN107974860A (en) * | 2017-11-07 | 2018-05-01 | 广东松炀再生资源股份有限公司 | A kind of preparation method of flame retardant type high-strength corrugated paper |
| CN109130332A (en) * | 2018-10-17 | 2019-01-04 | 江苏扬中印刷有限公司 | A kind of manufacture craft of useless corrugated paper recycling and reusing |
-
2020
- 2020-11-19 CN CN202011303233.0A patent/CN112376326A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015196910A (en) * | 2014-03-31 | 2015-11-09 | 王子ホールディングス株式会社 | Manufacturing method for corrugated board base paper |
| CN107974860A (en) * | 2017-11-07 | 2018-05-01 | 广东松炀再生资源股份有限公司 | A kind of preparation method of flame retardant type high-strength corrugated paper |
| CN109130332A (en) * | 2018-10-17 | 2019-01-04 | 江苏扬中印刷有限公司 | A kind of manufacture craft of useless corrugated paper recycling and reusing |
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Application publication date: 20210219 |
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