CN111926621A - Preparation method of combined environment-friendly paper - Google Patents
Preparation method of combined environment-friendly paper Download PDFInfo
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- CN111926621A CN111926621A CN202010685939.1A CN202010685939A CN111926621A CN 111926621 A CN111926621 A CN 111926621A CN 202010685939 A CN202010685939 A CN 202010685939A CN 111926621 A CN111926621 A CN 111926621A
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- base paper
- paper
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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
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/22—Polyalkenes, e.g. polystyrene
-
- 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
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/28—Polyesters
-
- 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
- D21H19/84—Paper comprising more than one coating on both sides of the substrate
-
- 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
-
- 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
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention relates to the technical field of paper product processing, and discloses combined environment-friendly paper which comprises a raw paper base paper layer, a coating and a spraying film layer, wherein the coating is coated on the upper surface of the raw paper base paper layer, and the spraying film layer is coated on the lower surface of the raw paper base paper layer; the preparation process comprises six steps of coating, drying and shaping, base paper pretreatment, corona, film coating, cooling and rolling and the like; by perfectly combining the PLA and the plastic-free coating, the advantages of the PLA and the plastic-free coating are brought into full play, so that the characteristics of paper are better brought into play, and the problems that paper made of the PLA material in the prior art is not high-temperature-resistant and is crisp, paper made of the plastic-free coating material is not high enough in stiffness, and a formed product is soft are solved.
Description
Technical Field
The invention relates to the technical field of paper product processing, in particular to a preparation method of combined environment-friendly paper.
Background
With the development of modern science and technology, the pace of life of people is accelerated, various disposable articles for daily use such as fast food outer packages of paper cups, hamburgers and the like enter daily life, and environment-friendly paper made of degradable materials becomes a necessity. At present, two kinds of environment-friendly paper produced by degradable materials are available on the market, one is PLA (polylactic acid) film coated paper, and the other is coated paper; the PLA film coating technology and the coating technology are mature, but the defects of the PLA film coating technology and the coating technology are very large, and the physical defects of the prepared product are more in the using process. PLA does not resist high temperature, paper is brittle and does not resist high temperature, and a prepared product is easy to tear, so that the layer is formed and the leakage is caused; but is resistant to paper temperature refrigeration, oil separation and seepage control. The plastic-free coating material has the main problems of insufficient stiffness, soft molded product, no oil separation and poor leakage; but has high temperature resistance and strong flexibility. Therefore, there is a need for an environment-friendly paper that can provide better performance of paper properties and both of them.
Disclosure of Invention
The invention provides a preparation method of combined environment-friendly paper, which has the advantages of tighter closing, oil separation, leakage prevention, edge leakage prevention, low temperature resistance, high temperature resistance and double-layer protection, and solves the problems that paper made of PLA material is not high temperature resistant and is crisp, paper made of plastic-free coating material is not high enough in stiffness and a formed product is soft in the prior art.
The invention provides the following technical scheme: the combined type environment-friendly paper comprises a raw paper base paper layer, a coating and a spraying film layer, wherein the coating is coated on the upper surface of the raw paper base paper layer, and the spraying film layer is coated on the lower surface of the raw paper base paper layer.
Preferably, the laminating layer is a PLA laminating paper layer.
Preferably, the coating is a plastic-free coating material.
Preferably, the biodegradable resin is one or a mixture of several of PLA, PBS and PBAT.
A preparation method of combined environment-friendly paper comprises the following steps:
step one, coating: coating a biodegradable resin suspension on the upper surface of the raw paper base paper layer;
step two, drying and shaping: drying the base paper layer coated with the biodegradable resin suspension, and forming a film on the base paper layer by using the biodegradable resin to form a functional layer by using a heating roller and a pressing roller;
step three, base paper pretreatment: the raw paper base paper layer is pretreated, the raw paper base paper layer to be processed is conveyed at a constant speed through a conveying mechanism, the moisture content of the raw paper base paper layer is 7-11% in the conveying process, and the temperature is kept constant at 35-80 ℃;
fourthly, corona: carrying out corona treatment on the lower surface of the base paper layer by a corona machine at a constant speed while maintaining the stability of the prefabrication parameters of the third step, so that a groove is generated by the corona treatment on the lower surface of the base paper layer, and then conveying the base paper layer to the next procedure;
fifthly, laminating: enabling the base paper layer after the fourth step to pass through film spraying equipment at a constant speed, and enabling the film spraying equipment to uniformly spray film and film spraying raw materials on the lower surface of the base paper layer to obtain finished paper, wherein the film spraying temperature is 300-320 ℃; the film spraying speed is 40-190 m/min; the laminating amount is 20-65 g/m 2;
sixthly, cooling and rolling: and (5) cooling the finished paper subjected to the film coating treatment in the fifth step through a cooling roller way, and then rolling to obtain the finished paper.
Preferably, the coating mode in the first step is spray coating or roll coating.
Preferably, the lamination raw material in the fifth step is a mixture of a certain amount of polyethylene and a degradable resin, and the degradable resin is a mixture of polylactic acid and polyhydroxyalkanoate.
The invention has the following beneficial effects:
firstly, the invention provides a new idea of making the environment-friendly paper by perfectly combining PLA and the plastic-free coating technology and mutually making up for short boards.
Secondly, the invention takes the base paper as the base paper, then the upper surface is coated with the plastic-free material, and the lower surface is coated with the PLA film coating layer, thereby further making up the single defect and bringing the advantages of the two into full play.
The invention perfectly combines PLA and plastic-free coating technology, so that the paper is compacter, more oil-proof, anti-seepage, low temperature resistant and high temperature resistant; and then make the paper more durable to the life of paper has been improved.
According to the invention, by combining PLA and the non-plastic coating, the problems that the PLA material is not high-temperature resistant and the paper is brittle can be solved, the problems that the non-plastic coating material is not high enough in stiffness and the molded product is soft can be solved, and meanwhile, the forward and reverse double-layer protection can enable the paper to have better performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Referring to fig. 1, a combined type environment-friendly paper includes a raw paper base paper layer 1, a coating layer 2 and a laminating layer 3.
Wherein, the coating layer 2 is coated on the upper surface of the base paper layer 1, and the spraying film layer 3 is coated on the lower surface of the base paper layer 1.
The laminating layer 3 is a PLA laminating paper layer.
The coating 2 is a non-plastic coating material.
The biodegradable resin is one or a mixture of PLA, PBS and PBAT.
Referring to fig. 2, a method for preparing a combined environment-friendly paper includes the following steps:
step one, coating: coating a biodegradable resin suspension on the upper surface of the raw paper base paper layer 1;
step two, drying and shaping: drying the base paper layer 1 coated with the biodegradable resin suspension, and forming a functional layer on the base paper layer 1 by using biodegradable resin formed by a film forming process through a heating roller and a pressing roller;
step three, base paper pretreatment: the method comprises the following steps of (1) preprocessing a base paper layer 1, namely firstly conveying the base paper layer 1 to be processed through a conveying mechanism at a constant speed, wherein the moisture content of the base paper layer 1 is 7-11% in the conveying process, and the temperature is kept constant at 35-80 ℃;
fourthly, corona: carrying out corona treatment on the lower surface of the raw paper base paper layer 1 through a corona machine at a constant speed while maintaining the stability of the prefabrication parameters of the third step on the raw paper base paper layer 1 after the third step is finished, so that a groove is generated by the corona treatment on the lower surface of the raw paper base paper layer 1, and then conveying the raw paper base paper layer 1 to the next process;
fifthly, laminating: enabling the base paper layer 1 after the fourth step to pass through film spraying equipment at a constant speed, and enabling the film spraying equipment to uniformly spray film and film spraying raw materials on the lower surface of the base paper layer 1 to obtain finished paper, wherein the film spraying temperature is 300-320 ℃; the film spraying speed is 40-190 m/min; the laminating amount is 20-65 g/m 2;
sixthly, cooling and rolling: and (5) cooling the finished paper subjected to the film coating treatment in the fifth step through a cooling roller way, and then rolling to obtain the finished paper.
The coating mode in the first step is spraying or rolling.
The film coating raw material in the fifth step is a mixture of a certain amount of polyethylene and degradable resin, and the degradable resin is a mixture of polylactic acid and polyhydroxyalkanoate.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Meanwhile, in the drawings of the invention, the filling pattern is only used for distinguishing the layers and is not limited at all.
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. A combined environment-friendly paper is characterized in that: the paper-coated paper comprises a base paper layer (1), a coating (2) and a spraying film layer (3), wherein the coating (2) is coated on the upper surface of the base paper layer (1), and the spraying film layer (3) is coated on the lower surface of the base paper layer (1).
2. The combined environment-friendly paper as claimed in claim 1, wherein: the laminating layer (3) is a PLA laminating paper layer.
3. The combined environment-friendly paper as claimed in claim 1, wherein: the coating (2) is made of a non-plastic coating material.
4. The combined environment-friendly paper as claimed in claim 1, wherein: the biodegradable resin is one or a mixture of PLA, PBS and PBAT.
5. A preparation method of combined environment-friendly paper is characterized by comprising the following steps:
step one, coating: coating a biodegradable resin suspension on the upper surface of the base paper layer (1);
step two, drying and shaping: drying the base paper layer (1) coated with the biodegradable resin suspension, and forming a functional layer on the base paper layer (1) by using a heating roller and a pressing roller to form a film of the biodegradable resin;
step three, base paper pretreatment: pretreating a base paper layer (1), namely firstly conveying the base paper layer (1) to be processed at a constant speed through a conveying mechanism, wherein the moisture and water content ratio of the base paper layer (1) is 7-11% and the temperature is constant at 35-80 ℃ in the conveying process;
fourthly, corona: carrying out corona treatment on the lower surface of the base paper layer (1) by a corona machine at a constant speed while maintaining the stability of the prefabricating parameters of the third step on the base paper layer (1) after the third step is finished, so that a groove is formed on the surface of the lower surface of the base paper layer (1) through corona treatment, and then conveying the base paper layer to the next procedure;
fifthly, laminating: enabling the base paper layer (1) after the fourth step to pass through film spraying equipment at a constant speed, and enabling the film spraying equipment to uniformly spray film and film spraying raw materials on the lower surface of the base paper layer (1) to obtain finished paper, wherein the film spraying temperature is 300-320 ℃; the film spraying speed is 40-190 m/min; the laminating amount is 20-65 g/m 2;
sixthly, cooling and rolling: and (5) cooling the finished paper subjected to the film coating treatment in the fifth step through a cooling roller way, and then rolling to obtain the finished paper.
6. The method for preparing the combined environment-friendly paper as claimed in claim 5, wherein the method comprises the following steps: the coating mode in the first step is spraying or rolling.
7. The method for preparing the combined environment-friendly paper as claimed in claim 5, wherein the method comprises the following steps: and the film coating raw material in the fifth step is a mixture of a certain amount of polyethylene and degradable resin, and the degradable resin is a mixture of polylactic acid and polyhydroxyalkanoate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685939.1A CN111926621A (en) | 2020-07-16 | 2020-07-16 | Preparation method of combined environment-friendly paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685939.1A CN111926621A (en) | 2020-07-16 | 2020-07-16 | Preparation method of combined environment-friendly paper |
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| Publication Number | Publication Date |
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| CN111926621A true CN111926621A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010685939.1A Pending CN111926621A (en) | 2020-07-16 | 2020-07-16 | Preparation method of combined environment-friendly paper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619710A (en) * | 2021-06-07 | 2022-06-14 | 湖南臻诚高分子新材料有限公司 | Preparation method of paper straw with characteristics of no softening, no dispersion and low migration of hot water in soaking |
| CN114855507A (en) * | 2022-05-05 | 2022-08-05 | 佛山市九利科技有限公司 | Outdoor pad and preparation process thereof |
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| CN102558797A (en) * | 2012-01-13 | 2012-07-11 | 深圳市光华伟业实业有限公司 | Biodegradable PE-coated paper material and preparation method thereof |
| CN108914686A (en) * | 2018-07-16 | 2018-11-30 | 福建益百利包装材料有限公司 | A kind of leaching membrane paper and its production technology |
| CN110293733A (en) * | 2019-05-30 | 2019-10-01 | 芜湖卷烟材料厂 | A kind of release internal lining paper of silicone oil and preparation method thereof |
| CN110481121A (en) * | 2019-09-02 | 2019-11-22 | 深圳市三上高分子环保新材料股份有限公司 | It is anti-scratch to spend degradable paper printed matter i.e. film and production line and production method |
| CN110481120A (en) * | 2019-08-16 | 2019-11-22 | 深圳市三上高分子环保新材料股份有限公司 | Surface touch degradable i.e. film and its production equipment and production method |
| CN110629586A (en) * | 2019-09-04 | 2019-12-31 | 刘天树 | Processing technology of environment-friendly degradable resin coated paper |
| CN110656543A (en) * | 2019-09-26 | 2020-01-07 | 浙江至优环保科技有限公司 | Environment-friendly laminating paper for containing cold drinks |
-
2020
- 2020-07-16 CN CN202010685939.1A patent/CN111926621A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558797A (en) * | 2012-01-13 | 2012-07-11 | 深圳市光华伟业实业有限公司 | Biodegradable PE-coated paper material and preparation method thereof |
| CN108914686A (en) * | 2018-07-16 | 2018-11-30 | 福建益百利包装材料有限公司 | A kind of leaching membrane paper and its production technology |
| CN110293733A (en) * | 2019-05-30 | 2019-10-01 | 芜湖卷烟材料厂 | A kind of release internal lining paper of silicone oil and preparation method thereof |
| CN110481120A (en) * | 2019-08-16 | 2019-11-22 | 深圳市三上高分子环保新材料股份有限公司 | Surface touch degradable i.e. film and its production equipment and production method |
| CN110481121A (en) * | 2019-09-02 | 2019-11-22 | 深圳市三上高分子环保新材料股份有限公司 | It is anti-scratch to spend degradable paper printed matter i.e. film and production line and production method |
| CN110629586A (en) * | 2019-09-04 | 2019-12-31 | 刘天树 | Processing technology of environment-friendly degradable resin coated paper |
| CN110656543A (en) * | 2019-09-26 | 2020-01-07 | 浙江至优环保科技有限公司 | Environment-friendly laminating paper for containing cold drinks |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619710A (en) * | 2021-06-07 | 2022-06-14 | 湖南臻诚高分子新材料有限公司 | Preparation method of paper straw with characteristics of no softening, no dispersion and low migration of hot water in soaking |
| CN114855507A (en) * | 2022-05-05 | 2022-08-05 | 佛山市九利科技有限公司 | Outdoor pad and preparation process thereof |
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Application publication date: 20201113 |
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