CN112176774A - Preparation method of environment-friendly packaging paper - Google Patents
Preparation method of environment-friendly packaging paper Download PDFInfo
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- CN112176774A CN112176774A CN202011051960.2A CN202011051960A CN112176774A CN 112176774 A CN112176774 A CN 112176774A CN 202011051960 A CN202011051960 A CN 202011051960A CN 112176774 A CN112176774 A CN 112176774A
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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
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
- D21H11/04—Kraft or sulfate pulp
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/59—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- 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
Abstract
The invention relates to the technical field of papermaking, and discloses a preparation method of environment-friendly packaging paper, which comprises the following raw materials in parts by weight: 50-100 parts of paper pulp raw material, 50-100 parts of heavy calcium carbonate, 30-60 parts of fragrant particles, 80-100 parts of gloss oil, 100-130 parts of organic silicon resin, 50-80 parts of anti-scraping agent, 30-60 parts of color fixing agent, 30-60 parts of latex, 20-50 parts of nano silicon dioxide, 15-30 parts of nano titanium dioxide, 30-40 parts of cyclohexane and 20-50 parts of acrylic acid. This preparation method of environmental protection wrapping paper, carry out the ratio through paper pulp raw materials, heavy calcium carbonate, fragrant smell granule, gloss oil and organic silicon resin cooperation, can more effectually avoid the paper to produce the dense smell, further improved user's use and experienced, guaranteed user's normal use, effectively reduce the injury to user's health, very big improvement the improvement of paper feature of environmental protection, the more extensive demand of satisfying modern that can be better, further improved the convenience of using.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to a preparation method of environment-friendly packaging paper.
Background
The paper packaging material is considered as the most promising green packaging material in the evaluation of LCA due to the characteristics of abundant resources, easy recovery and easy degradation, the paper packaging industry develops more and more rapidly along with the improvement of the living standard of people, the application range of paper is continuously expanded, the paper is required to have certain waterproof performance in the aspect of packaging for vegetables, foods, household appliances and industrial products, therefore, more and more studies are being conducted on the water repellent treatment of paper, paper fibers are hydrophilic because they contain hydrophilic chemical functional groups, the paper surface is modified to endow the paper surface with hydrophobicity, a lotus effect close to bionics is formed on the paper surface, the moisture-proof and anti-fouling performance of the paper can be improved, particularly for producing recycled paper and functional paper, the application field is expanded by endowing the surface with hydrophobic property so as to improve the service performance and relevant characteristics of the product.
For example, the preparation method of the hydrophobic wrapping paper provided in chinese patent publication No. 201810290734.6 is basically described as follows: the paper is prepared by coating a hydrophobic coating on the surface of kraft paper by a rolling method, airing, placing in an oven for heating and heat preservation, cooling and then placing for 24h, wherein the hydrophobic coating is prepared from 2-5 parts by weight of nano silicon dioxide, 0.5-1 part by weight of nano titanium dioxide, 30-40 parts by weight of cyclohexane, 100 parts by weight of organic silicon resin, 1-3 parts by weight of a color fixing agent, 2-5 parts by weight of acrylic acid, 1-4 parts by weight of methyl methacrylate and 2-5 parts by weight of an initiator.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a preparation method of environment-friendly packaging paper, which solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of environment-friendly packaging paper comprises the following steps:
1) preparing raw materials: 50-100 parts of paper pulp raw material, 50-100 parts of heavy calcium carbonate, 30-60 parts of fragrant particles, 80-100 parts of gloss oil, 100-130 parts of organic silicon resin, 50-80 parts of anti-scraping agent, 30-60 parts of color fixing agent, 30-60 parts of latex, 20-50 parts of nano silicon dioxide, 15-30 parts of nano titanium dioxide, 30-40 parts of cyclohexane, 20-50 parts of acrylic acid, 50-80 parts of methyl methacrylate and 10-20 parts of initiator.
2) Mixing raw materials: firstly, placing paper pulp raw materials, heavy calcium carbonate, fragrant particles, gloss oil and organic silicon resin in a stirrer, uniformly stirring, then adding an anti-scraping agent, a color fixing agent, latex, nano silicon dioxide, nano titanium dioxide, cyclohexane, acrylic acid, methyl methacrylate and an initiator into the stirrer, continuing stirring for 15-20 minutes after placing, and keeping the temperature, thus obtaining the well-stirred paper pulp raw materials.
3) And (3) setting and drying of paper: and (3) placing the shaped paper raw material on a blanket for water absorption, standing for 10-15 minutes to enable the blanket to fully absorb the moisture of the paper, putting the paper into a dryer for drying and shaping after the moisture absorption is finished, and uniformly mixing and drying the surface of the paper to obtain the dried paper raw material.
4) Paper calendaring treatment: and placing the dried paper raw material into a calendaring machine, controlling the calendaring machine to reciprocate to perform repeated calendaring treatment on the paper, wherein the calendaring treatment is 3-5 minutes, and after the calendaring treatment is finished, placing the calendered paper at a specified position to finish the preparation treatment of the paper.
Preferably, the drying time in the step 3) is set to be 8-10 minutes, and the drying temperature is controlled to be 55-65 ℃.
Further, the gloss oil in the step 1) is polyacrylate resin or polyurethane resin.
Further, the pulp raw material in the step 1) is bleached sulfate wood pulp made of softwood pulp and hardwood pulp.
On the basis of the scheme, the odor type of the fragrance particles can be divided into lavender fragrance, rose fragrance, lily fragrance, peony fragrance, cherry fragrance and the like.
As a further scheme of the invention, the nano silicon dioxide is obtained by modifying 3-5 times of silane coupling agent by weight, the color fixing agent is polyamide color fixing agent, and the initiator is hydrogen peroxide or potassium persulfate.
More specifically, the stirring time in the step 2) is controlled to be 20-25 minutes, and the temperature is controlled to be 30-40 ℃.
(III) advantageous effects
Compared with the prior art, the invention provides a preparation method of environment-friendly packaging paper, which has the following beneficial effects:
this preparation method of environmental protection wrapping paper, carry out the ratio through paper pulp raw materials, heavy calcium carbonate, fragrant smell granule, gloss oil and organic silicon resin cooperation, can more effectually avoid the paper to produce the dense smell, further improved user's use and experienced, guaranteed user's normal use, effectively reduce the injury to user's health, very big improvement the improvement of paper feature of environmental protection, the more extensive demand of satisfying modern that can be better, further improved the convenience of using.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
1) preparing raw materials: 50 parts of paper pulp raw materials (bleached sulfate wood pulp made of softwood pulp and hardwood pulp), 50 parts of heavy calcium carbonate, 30 parts of fragrance particles (the fragrance type of the fragrance particles can be lavender fragrance, rose fragrance, lily fragrance, peony fragrance and cherry fragrance), 80 parts of gloss oil (the gloss oil is polyacrylate resin or polyurethane resin), 100 parts of organic silicon resin, 50 parts of anti-scraping agent, 30 parts of fixing agent (the fixing agent is polyamide fixing agent), 30 parts of latex, 20 parts of nano-silica (the nano-silica is modified by 3-5 times of silane coupling agent by weight), 15 parts of nano-titanium dioxide, 30 parts of cyclohexane, 20 parts of acrylic acid, 50 parts of methyl methacrylate and 10 parts of initiator.
2) Mixing raw materials: firstly, placing paper pulp raw materials, heavy calcium carbonate, fragrant particles, gloss oil and organic silicon resin in a stirrer, uniformly stirring for 20-25 minutes, controlling the temperature at 30-40 ℃, adding an anti-scraping agent, a color fixing agent, latex, nano silicon dioxide, nano titanium dioxide, cyclohexane, acrylic acid, methyl methacrylate and an initiator into the stirrer after stirring, continuing stirring for 15-20 minutes after placing, and keeping the temperature, thus obtaining the stirred paper pulp raw materials.
3) And (3) setting and drying of paper: and (3) placing the shaped paper raw material on a blanket for water absorption, standing for 10-15 minutes to enable the blanket to fully absorb the moisture of the paper, placing the paper into a dryer for drying and shaping after the moisture absorption is finished, setting the drying time to be 8-10 minutes, controlling the drying temperature to be 55-65 ℃, and uniformly mixing and drying the surface of the paper to obtain the dried paper raw material.
4) Paper calendaring treatment: and placing the dried paper raw material into a calendaring machine, controlling the calendaring machine to reciprocate to perform repeated calendaring treatment on the paper, wherein the calendaring treatment is 3-5 minutes, and after the calendaring treatment is finished, placing the calendered paper at a specified position to finish the preparation treatment of the paper.
Example two:
1) preparing raw materials: 75 parts of paper pulp raw materials (bleached sulfate wood pulp made of softwood pulp and hardwood pulp), 75 parts of heavy calcium carbonate, 45 parts of fragrance particles (the fragrance type of the fragrance particles can be lavender fragrance, rose fragrance, lily fragrance, peony fragrance and cherry fragrance), 90 parts of gloss oil (the gloss oil is polyacrylate resin or polyurethane resin), 115 parts of organic silicon resin, 65 parts of anti-scraping agent, 45 parts of fixing agent (the fixing agent is polyamide fixing agent), 45 parts of latex, 40 parts of nano-silica (the nano-silica is modified by 3-5 times of silane coupling agent by weight), 20 parts of nano-titanium dioxide, 35 parts of cyclohexane, 40 parts of acrylic acid, 70 parts of methyl methacrylate and 15 parts of initiator.
2) Mixing raw materials: firstly, placing paper pulp raw materials, heavy calcium carbonate, fragrant particles, gloss oil and organic silicon resin in a stirrer, uniformly stirring for 20-25 minutes, controlling the temperature at 30-40 ℃, adding an anti-scraping agent, a color fixing agent, latex, nano silicon dioxide, nano titanium dioxide, cyclohexane, acrylic acid, methyl methacrylate and an initiator into the stirrer after stirring, continuing stirring for 15-20 minutes after placing, and keeping the temperature, thus obtaining the stirred paper pulp raw materials.
3) And (3) setting and drying of paper: and (3) placing the shaped paper raw material on a blanket for water absorption, standing for 10-15 minutes to enable the blanket to fully absorb the moisture of the paper, placing the paper into a dryer for drying and shaping after the moisture absorption is finished, setting the drying time to be 8-10 minutes, controlling the drying temperature to be 55-65 ℃, and uniformly mixing and drying the surface of the paper to obtain the dried paper raw material.
4) Paper calendaring treatment: and placing the dried paper raw material into a calendaring machine, controlling the calendaring machine to reciprocate to perform repeated calendaring treatment on the paper, wherein the calendaring treatment is 3-5 minutes, and after the calendaring treatment is finished, placing the calendered paper at a specified position to finish the preparation treatment of the paper.
Example three:
1) preparing raw materials: 100 parts of paper pulp raw materials (bleached sulfate wood pulp made of softwood pulp and hardwood pulp), 100 parts of heavy calcium carbonate, 60 parts of fragrance particles (the fragrance type of the fragrance particles can be lavender fragrance, rose fragrance, lily fragrance, peony fragrance and cherry fragrance), 100 parts of gloss oil (the gloss oil is polyacrylate resin or polyurethane resin), 130 parts of organic silicon resin, 80 parts of anti-scraping agent, 30-60 parts of fixing agent (the fixing agent is polyamide fixing agent), 60 parts of latex, 50 parts of nano-silica (the nano-silica is modified by 3-5 times of silane coupling agent by weight), 30 parts of nano-titanium dioxide, 40 parts of cyclohexane, 50 parts of acrylic acid, 80 parts of methyl methacrylate and 20 parts of initiator.
2) Mixing raw materials: firstly, placing paper pulp raw materials, heavy calcium carbonate, fragrant particles, gloss oil and organic silicon resin in a stirrer, uniformly stirring for 20-25 minutes, controlling the temperature at 30-40 ℃, adding an anti-scraping agent, a color fixing agent, latex, nano silicon dioxide, nano titanium dioxide, cyclohexane, acrylic acid, methyl methacrylate and an initiator into the stirrer after stirring, continuing stirring for 15-20 minutes after placing, and keeping the temperature, thus obtaining the stirred paper pulp raw materials.
3) And (3) setting and drying of paper: and (3) placing the shaped paper raw material on a blanket for water absorption, standing for 10-15 minutes to enable the blanket to fully absorb the moisture of the paper, placing the paper into a dryer for drying and shaping after the moisture absorption is finished, setting the drying time to be 8-10 minutes, controlling the drying temperature to be 55-65 ℃, and uniformly mixing and drying the surface of the paper to obtain the dried paper raw material.
4) Paper calendaring treatment: and placing the dried paper raw material into a calendaring machine, controlling the calendaring machine to reciprocate to perform repeated calendaring treatment on the paper, wherein the calendaring treatment is 3-5 minutes, and after the calendaring treatment is finished, placing the calendered paper at a specified position to finish the preparation treatment of the paper.
The environment-friendly packaging paper obtained by comparing the three embodiments has better environment-friendly effect, the environment-friendly packaging paper obtained by the second embodiment can effectively prevent paper from generating heavy smell, the use experience of a user is further improved, and the use convenience is further improved.
The invention has the beneficial effects that: this preparation method of environmental protection wrapping paper, carry out the ratio through paper pulp raw materials, heavy calcium carbonate, fragrant smell granule, gloss oil and organic silicon resin cooperation, can more effectually avoid the paper to produce the dense smell, further improved user's use and experienced, guaranteed user's normal use, effectively reduce the injury to user's health, very big improvement the improvement of paper feature of environmental protection, the more extensive demand of satisfying modern that can be better, further improved the convenience of using.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The preparation method of the environment-friendly packaging paper is characterized by comprising the following steps:
1) preparing raw materials: 50-100 parts of paper pulp raw material, 50-100 parts of heavy calcium carbonate, 30-60 parts of fragrant particles, 80-100 parts of gloss oil, 100-130 parts of organic silicon resin, 50-80 parts of anti-scraping agent, 30-60 parts of color fixing agent, 30-60 parts of latex, 20-50 parts of nano silicon dioxide, 15-30 parts of nano titanium dioxide, 30-40 parts of cyclohexane, 20-50 parts of acrylic acid, 50-80 parts of methyl methacrylate and 10-20 parts of initiator;
2) mixing raw materials: firstly, placing paper pulp raw materials, heavy calcium carbonate, fragrant particles, gloss oil and organic silicon resin in a stirrer, uniformly stirring, then adding an anti-scraping agent, a color fixing agent, latex, nano silicon dioxide, nano titanium dioxide, cyclohexane, acrylic acid, methyl methacrylate and an initiator into the stirrer, continuing stirring for 15-20 minutes after the placement is finished, and keeping the temperature, thus obtaining the well-stirred paper pulp raw materials;
3) and (3) setting and drying of paper: placing the shaped paper raw material on a blanket for water absorption, standing for 10-15 minutes to enable the blanket to fully absorb the moisture of the paper, placing the paper into a dryer for drying and shaping after the moisture absorption is finished, and uniformly mixing and drying the surface of the paper to obtain the dried paper raw material;
4) paper calendaring treatment: and placing the dried paper raw material into a calendaring machine, controlling the calendaring machine to reciprocate to perform repeated calendaring treatment on the paper, wherein the calendaring treatment is 3-5 minutes, and after the calendaring treatment is finished, placing the calendered paper at a specified position to finish the preparation treatment of the paper.
2. The method for preparing environment-friendly wrapping paper according to claim 1, wherein the drying time in the step 3) is set to 8-10 minutes, and the drying temperature is controlled to 55-65 ℃.
3. The method for preparing environment-friendly packaging paper as claimed in claim 1, wherein the gloss oil in step 1) is polyacrylate resin or polyurethane resin.
4. The method for preparing environment-friendly wrapping paper according to claim 1, wherein the pulp raw material in the step 1) is bleached kraft pulp made of softwood pulp and hardwood pulp.
5. The method for preparing environment-friendly wrapping paper according to claim 1, wherein the odor type of the aroma particles can be lavender fragrance, rose fragrance, lily fragrance, peony fragrance, cherry fragrance and the like.
6. The method for preparing environment-friendly packaging paper as claimed in claim 1, wherein the nano silica is obtained by modifying 3-5 times of silane coupling agent by weight, the fixing agent is polyamide fixing agent, and the initiator is hydrogen peroxide or potassium persulfate.
7. The preparation method of the environment-friendly packaging paper is characterized in that the stirring time in the step 2) is controlled to be 20-25 minutes, and the temperature is controlled to be 30-40 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011051960.2A CN112176774A (en) | 2020-09-29 | 2020-09-29 | Preparation method of environment-friendly packaging paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011051960.2A CN112176774A (en) | 2020-09-29 | 2020-09-29 | Preparation method of environment-friendly packaging paper |
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| Publication Number | Publication Date |
|---|---|
| CN112176774A true CN112176774A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011051960.2A Withdrawn CN112176774A (en) | 2020-09-29 | 2020-09-29 | Preparation method of environment-friendly packaging paper |
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| Country | Link |
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| CN (1) | CN112176774A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763682A (en) * | 2021-05-25 | 2022-07-19 | 上海嘉泰纸制品有限公司 | High-strength paper product packaging material and application thereof |
| CN115262283A (en) * | 2022-07-26 | 2022-11-01 | 正业包装（中山）有限公司 | Folding-resistant composite corrugated paper and production process thereof |
-
2020
- 2020-09-29 CN CN202011051960.2A patent/CN112176774A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763682A (en) * | 2021-05-25 | 2022-07-19 | 上海嘉泰纸制品有限公司 | High-strength paper product packaging material and application thereof |
| CN114763682B (en) * | 2021-05-25 | 2023-11-14 | 上海嘉泰纸制品有限公司 | High-strength paper product packaging material and application thereof |
| CN115262283A (en) * | 2022-07-26 | 2022-11-01 | 正业包装（中山）有限公司 | Folding-resistant composite corrugated paper and production process thereof |
| CN115262283B (en) * | 2022-07-26 | 2023-12-26 | 正业包装（中山）有限公司 | Folding-resistant composite corrugated paper and production process thereof |
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