CN111287015A - Production method of release paper - Google Patents
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- CN111287015A CN111287015A CN202010141373.6A CN202010141373A CN111287015A CN 111287015 A CN111287015 A CN 111287015A CN 202010141373 A CN202010141373 A CN 202010141373A CN 111287015 A CN111287015 A CN 111287015A
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- pulp
- sulfate
- pulping
- release paper
- coating
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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
- D21H27/001—Release 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
-
- 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
- D21H17/66—Salts, e.g. alums
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/52—Cellulose; Derivatives thereof
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/64—Inorganic 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a production method of release paper, which comprises the following steps of (1): preparing raw materials, wherein the raw materials comprise 80-90% of sulfate hardwood pulp and 10-20% of sulfate softwood pulp by mass percentage; step (2): respectively putting the sulfate hardwood pulp and the sulfate softwood pulp in the step (1) into a pulper for water injection pulping to prepare sulfate hardwood pulp and sulfate softwood pulp, and respectively pumping the sulfate hardwood pulp and the sulfate softwood pulp to a pulp mixing tank to form mixed pulp; and (3): adding aluminum sulfate and a sizing agent into the slurry preparation tank in sequence, and stirring to prepare mixed slurry; and (4): preparing a coating, injecting porcelain clay, a dispersing agent, latex, sodium carboxymethyl cellulose, a lubricant, a water repellent agent and sodium hydroxide into water for dilution, and uniformly stirring to obtain the coating. The production process is simple, the production cost is low, and the prepared release paper has low peeling force, low oil absorption value, environmental protection and practicability.
Description
Technical Field
The invention relates to the technical field of release paper, in particular to a production method of release paper.
Background
The release paper is an important material for manufacturing the adhesive sticker anti-sticking lining material, and the total amount of the release paper in the market is huge along with the wide application of the adhesive sticker material. And the release paper body paper smoothness that prior art produced is lower, paper surface fibre space is more, and phenomenon such as the paper inner structure is not compact enough causes the release paper to have the oil point of permeating, and the release paper that has the oil point of permeating can lead to the stripping force to be on the high side, can tear the plane materiel in the use, and in addition, current release paper, because the lower silicone oil coating weight that leads to of paper smoothness is on the high side, directly restricts non-setting adhesive manufacturing cost. Therefore, there is a need for improvements in the prior art to avoid the disadvantages of the prior art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a production method of release paper with low peeling force, environmental protection and practicability.
The invention is realized by the following technical scheme:
a method for producing release paper comprises the following steps,
step (1): preparing raw materials, wherein the raw materials comprise 80-90% of sulfate hardwood pulp and 10-20% of sulfate softwood pulp by mass percentage;
step (2): putting the sulfate hardwood pulp obtained in the step (1) into a pulper, injecting water into the pulper for pulping, after pulping is completed, pumping the pulp in the pulper into a first pulp storage tank, pulping by using a refiner until the pulping degree is 45-50 SR to obtain sulfate hardwood pulp, pumping the sulfate hardwood pulp into a pulping tank, putting the sulfate softwood pulp obtained in the step (1) into the pulper, injecting water into the pulper for pulping, after pulping is completed, pumping the pulp in the pulper into a second pulp storage tank, pulping by using the refiner until the pulping degree is 50-53 SR to obtain sulfate softwood pulp, pumping the sulfate softwood pulp into the pulping tank, and mixing with the sulfate hardwood pulp to form mixed pulp, wherein the pulping degree of the mixed pulp is 50-60 SR;
and (3): adding aluminum sulfate and a sizing agent into a pulp preparation tank in sequence, stirring to prepare mixed pulp, wherein the mixed pulp comprises 88.5-91.5% of mixed paper pulp, 7-9% of aluminum sulfate and 1.5-2.5% of sizing agent by mass percent, and sending the mixed pulp to a pulp forming tank;
and (4): preparing a coating, injecting porcelain clay, a dispersing agent, latex, sodium carboxymethylcellulose, a lubricant, a water repellent agent and sodium hydroxide into water for dilution, and uniformly stirring to obtain the coating, wherein the coating comprises 25-35% of porcelain clay, 0.1-0.6% of dispersing agent, 45-55% of latex, 0.2-0.6% of sodium carboxymethylcellulose, 0.5-0.7% of lubricant, 0.6-1% of water repellent agent, 0.1-1.5% of sodium hydroxide and 10-20% of water by mass, and the pH value of the coating is 10.5-11;
and (5): and (4) conveying the mixed slurry obtained in the step (3) to a wet plate former for forming, drying before, performing film transfer type glue application by adopting the coating obtained in the step (4), wherein the coating weight is more than or equal to 5 g/square meter, and then drying, cooling, rewinding, cutting, packaging and warehousing to obtain a finished product.
Further, the sizing agent is alkyl ketene dimer or cationic rosin size or alkenyl succinic anhydride, the sulfate hardwood pulp is bleached sulfate hardwood pulp, and the sulfate softwood pulp is bleached sulfate softwood pulp.
Further, the pulper is a hydrapulper, and the pulping machine adopts a sticky mode to grind pulp.
Further, the film transfer type sizing in the step (5) is carried out, the coating is uniformly coated on the surface of the paper, and the coating amount is 8g per square meter.
Further, the raw materials comprise 90% of sulfate hardwood pulp and 10% of sulfate softwood pulp by mass percentage.
Further, the raw materials comprise 80% of sulfate hardwood pulp and 20% of sulfate softwood pulp by mass percentage.
Further, the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage.
Further, the coating comprises 33.5% of china clay, 0.6% of dispersing agent, 45% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Further, the coating comprises 30.5% of china clay, 0.6% of dispersing agent, 48% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Further, the coating comprises, by mass, 28.5% of china clay, 0.6% of a dispersant, 50% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of a lubricant, 0.6% of a water repellent agent, 1% of sodium hydroxide and 15% of water.
Compared with the prior art, the invention prepares the mixed paper pulp with the beating degree of 50-60 DEG SR by pulping and jordaning the raw materials which comprise 80-90% of sulfate broad-leaved wood pulp and 10-20% of sulfate softwood pulp according to the mass percentage, so that the raw materials have high devillicate fibrillation degree, much more hydroxyl groups are combined among fibers, the prepared paper has high internal compactness, the sizing agent is added to prevent the paper from absorbing moisture and preventing the paint from migrating to the interior of the base paper in the subsequent coating process, the paint is prepared by 25-35% of china clay, 0.1-0.6% of dispersing agent, 45-55% of latex, 0.2-0.6% of sodium carboxymethyl cellulose, 0.5-0.7% of lubricating agent, 0.6-1% of water repellent agent, 0.1-1.5% of sodium hydroxide and 10-20% of water according to the mass percentage, the paint is uniformly coated on the surface of the paper, the coating weight is more than or equal to 5 g/square meter, the capillary pores and fiber gaps on the surface of the paper are sealed, and the oil absorption value and the water absorption value are reduced, so that the release paper with low peeling force, environmental protection and practicability is prepared.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
A method for producing release paper comprises the following steps,
step (1): preparing raw materials, wherein the raw materials comprise 80-90% of sulfate hardwood pulp and 10-20% of sulfate softwood pulp by mass percentage; as a specific embodiment, the sulfate hardwood pulp is bleached sulfate hardwood pulp and the sulfate softwood pulp is bleached sulfate softwood pulp.
Step (2): putting the sulfate hardwood pulp obtained in the step (1) into a pulper, injecting water into the pulper for pulping, after pulping is completed, pumping the pulp in the pulper into a first pulp storage tank, pulping by using a refiner until the pulping degree is 45-50 DEG SR to obtain sulfate hardwood pulp, pumping the sulfate hardwood pulp into a pulping tank, putting the sulfate softwood pulp obtained in the step (1) into the pulper, injecting water into the pulper for pulping, after pulping is completed, pumping the pulp in the pulper into a second pulp storage tank, pulping by using the refiner until the pulping degree is 50-53 DEG SR to obtain sulfate softwood pulp, pumping the sulfate softwood pulp into the pulping tank, and pulping with the sulfate hardwood pulp to form mixed pulp, wherein the pulping degree of the mixed pulp is 50-60 DEG SR; as a specific implementation mode, the pulper is a hydrapulper, the pulping machine adopts a sticky mode to carry out pulping, and the sticky pulping is carried out on the sulfate hardwood pulp and the sulfate softwood pulp, so that the devillicate brooming degree of the sulfate hardwood pulp and the sulfate softwood pulp is high, the hydroxyl groups among fibers are combined much, the fiber bonding strength is greatly improved, the internal structure of the paper is enabled to be compact, and the surface void ratio of the paper is reduced.
And (3): adding aluminum sulfate and a sizing agent into a pulp preparation tank in sequence, stirring to prepare mixed pulp, wherein the mixed pulp comprises 88.5-91.5% of mixed paper pulp, 7-9% of aluminum sulfate and 1.5-2.5% of sizing agent by mass percent, and sending the mixed pulp to a pulp forming tank; as a specific embodiment, the sizing agent is an alkyl ketene dimer or a cationic rosin size or an alkenyl succinic anhydride.
And (4): preparing a coating, injecting porcelain clay, a dispersing agent, latex, sodium carboxymethylcellulose, a lubricant, a water repellent agent and sodium hydroxide into water for dilution, and uniformly stirring to obtain the coating, wherein the coating comprises 25-35% of porcelain clay, 0.1-0.6% of the dispersing agent, 45-55% of the latex, 0.2-0.6% of sodium carboxymethylcellulose, 0.5-0.7% of the lubricant, 0.6-1% of the water repellent agent, 0.1-1.5% of sodium hydroxide and 10-20% of water by mass, and the pH value of the coating is 10.5-11;
and (5): and (4) conveying the mixed slurry obtained in the step (3) to a wet plate former for forming, drying before, performing film transfer type glue application by adopting the coating obtained in the step (4), wherein the coating weight is more than or equal to 5 g/square meter, and then drying, cooling, rewinding, cutting, packaging and warehousing to obtain a finished product. As a specific embodiment, the film transfer type sizing of the step (5) is carried out, and the coating is uniformly coated on the surface of paper, wherein the coating weight is 8g per square meter.
By the following examples, the preparation method of the present invention produces high strength dip-processed paper using raw materials and coating materials in various proportions.
Example 1
The raw materials comprise 90% of sulfate hardwood pulp and 10% of sulfate softwood pulp by mass percentage, the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage, and the coating comprises 33.5% of china clay, 0.6% of dispersing agent, 45% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Example 2
The raw materials comprise 90% of sulfate hardwood pulp and 10% of sulfate softwood pulp by mass percentage, the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage, and the coating comprises 30.5% of china clay, 0.6% of dispersing agent, 48% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Example 3
The raw materials comprise 90% of sulfate hardwood pulp and 10% of sulfate softwood pulp by mass percentage, the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage, and the coating comprises 28.5% of china clay, 0.6% of dispersing agent, 50% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Example 4
The raw materials comprise 80% of sulfate hardwood pulp and 20% of sulfate softwood pulp by mass percentage, the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage, and the coating comprises 33.5% of china clay, 0.6% of dispersing agent, 45% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Example 5
The raw materials comprise 80% of sulfate hardwood pulp and 20% of sulfate softwood pulp by mass percentage, the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage, and the coating comprises 30.5% of china clay, 0.6% of dispersing agent, 48% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Example 6
The raw materials comprise 80% of sulfate hardwood pulp and 20% of sulfate softwood pulp by mass percentage, the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage, and the coating comprises 28.5% of china clay, 0.6% of dispersing agent, 50% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricating agent, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percentage.
Table 1 shows the product detection standard of the release paper, table 2 shows the detection data of the release paper obtained in examples 1 to 6, and the detection results of the release paper obtained in examples 1 to 6 all meet the product detection standard of the release paper.
TABLE 1 product test Standard for Release paper
Table 2 test data of release papers obtained in examples 1 to 6
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 |
| Quantitative (g/m)2) | 40.6 | 41.0 | 40.6 | 40.8 | 40.7 | 40.9 |
| Thickness (um) | 39.6 | 40.0 | 39.8 | 39.9 | 39.6 | 39.6 |
| Tightness (g/cm)3) | 1.02 | 1.02 | 1.02 | 1.02 | 1.02 | 1.02 |
| Smoothness(s) | 880/36 | 864/35 | 882/36 | 862/35 | 861/35 | 866/35 |
| Surface oil absorption number (g/m)2) | 1.18 | 0.96 | 0.86 | 1.2 | 1.15 | 0.98 |
| Surface water absorption value (g/m)2) | 23 | 25 | 21 | 25 | 23 | 24 |
| Transverse tear (mN) | 224.7 | 224.8 | 224.7 | 224.8 | 225.0 | 224.6 |
| Longitudinal tensile Strength (KN/m) | 2.36 | 2.33 | 2.42 | 2.41 | 2.39 | 2.36 |
| Moisture (%) | 6.4 | 6.4 | 6.4 | 6.3 | 6.2 | 6.4 |
The method comprises the steps of pulping and grinding raw materials which comprise 80-90% of sulfate hardwood pulp and 10-20% of sulfate softwood pulp according to mass percentage to prepare mixed paper pulp with a beating degree of 50-60 DEG SR, so that the raw materials have high fibrillation degree and much more hydroxyl bonding among fibers, the prepared paper has high internal compactness, sizing agents are added to prevent paper from absorbing moisture and prevent paint from migrating to the interior of raw paper in the subsequent coating process, the paint is prepared by 25-35% of china clay, 0.1-0.6% of dispersing agents, 45-55% of latex, 0.2-0.6% of sodium carboxymethyl cellulose, 0.5-0.7% of lubricating agents, 0.6-1% of water-resisting agents, 0.1-1.5% of sodium hydroxide and 10-20% of water according to mass percentage and is uniformly coated on the surface of the paper, the coating amount is not less than 5 g/square meter, capillary pores and fiber gaps on the surface of the paper are sealed, the oil absorption value and the water absorption value are reduced, and the release paper with low peeling force, environmental protection and practicability is prepared.
The raw materials used in the invention have simple components, wide sources, low price, no toxicity and harm, easy degradation of products which meet the environmental protection requirement, less equipment investment, simple production process, easy operation and low production cost.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A production method of release paper is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step (1): preparing raw materials, wherein the raw materials comprise 80-90% of sulfate hardwood pulp and 10-20% of sulfate softwood pulp by mass percentage;
step (2): putting the sulfate hardwood pulp obtained in the step (1) into a pulper, injecting water into the pulper for pulping, after pulping is completed, pumping the pulp in the pulper into a first pulp storage tank, pulping by using a refiner until the pulping degree is 45-50 SR to obtain sulfate hardwood pulp, pumping the sulfate hardwood pulp into a pulping tank, putting the sulfate softwood pulp obtained in the step (1) into the pulper, injecting water into the pulper for pulping, after pulping is completed, pumping the pulp in the pulper into a second pulp storage tank, pulping by using the refiner until the pulping degree is 50-53 SR to obtain sulfate softwood pulp, pumping the sulfate softwood pulp into the pulping tank, and mixing with the sulfate hardwood pulp to form mixed pulp, wherein the pulping degree of the mixed pulp is 50-60 SR;
and (3): adding aluminum sulfate and a sizing agent into a pulp preparation tank in sequence, stirring to prepare mixed pulp, wherein the mixed pulp comprises 88.5-91.5% of mixed paper pulp, 7-9% of aluminum sulfate and 1.5-2.5% of sizing agent by mass percent, and sending the mixed pulp to a pulp forming tank;
and (4): preparing a coating, injecting porcelain clay, a dispersing agent, latex, sodium carboxymethylcellulose, a lubricant, a water repellent agent and sodium hydroxide into water for dilution, and uniformly stirring to obtain the coating, wherein the coating comprises 25-35% of porcelain clay, 0.1-0.6% of dispersing agent, 45-55% of latex, 0.2-0.6% of sodium carboxymethylcellulose, 0.5-0.7% of lubricant, 0.6-1% of water repellent agent, 0.1-1.5% of sodium hydroxide and 10-20% of water by mass, and the pH value of the coating is 10.5-11;
and (5): and (4) conveying the mixed slurry obtained in the step (3) to a wet plate former for forming, drying before, performing film transfer type glue application by adopting the coating obtained in the step (4), wherein the coating weight is more than or equal to 5 g/square meter, and then drying, cooling, rewinding, cutting, packaging and warehousing to obtain a finished product.
2. The method for producing release paper according to claim 1, characterized in that: the sizing agent is alkyl ketene dimer or cationic rosin size or alkenyl succinic anhydride, the sulfate hardwood pulp is bleached sulfate hardwood pulp, and the sulfate softwood pulp is bleached sulfate softwood pulp.
3. The method for producing release paper according to claim 1, characterized in that: the pulper is a hydraulic pulper, and the pulping machine adopts a sticky mode to grind pulp.
4. The method for producing release paper according to claim 1, characterized in that: and (3) the film transfer type sizing in the step (5) is carried out, the coating is uniformly coated on the surface of the paper, and the coating amount is 8g per square meter.
5. The method for producing release paper according to claim 1, characterized in that: the raw materials comprise 90% of sulfate hardwood pulp and 10% of sulfate softwood pulp by mass percentage.
6. The method for producing release paper according to claim 1, characterized in that: the raw materials comprise 80% of sulfate hardwood pulp and 20% of sulfate softwood pulp by mass percentage.
7. The method for producing release paper according to claim 1, characterized in that: the mixed pulp comprises 90% of mixed pulp, 8% of aluminum sulfate and 2% of sizing agent by mass percentage.
8. The method for producing release paper according to claim 1, characterized in that: the coating comprises 33.5% of china clay, 0.6% of dispersant, 45% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricant, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percent.
9. The method for producing release paper according to claim 1, characterized in that: the coating comprises 30.5% of china clay, 0.6% of dispersant, 48% of latex, 0.6% of sodium carboxymethyl cellulose, 0.7% of lubricant, 0.6% of water repellent agent, 1% of sodium hydroxide and 15% of water by mass percent.
10. The method for producing release paper according to claim 1, characterized in that: the coating comprises, by mass, 28.5% of china clay, 0.6% of a dispersant, 50% of latex, 0.6% of sodium carboxymethylcellulose, 0.7% of a lubricant, 0.6% of a water repellent agent, 1% of sodium hydroxide and 15% of water.
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| CN202010141373.6A CN111287015A (en) | 2020-03-04 | 2020-03-04 | Production method of release paper |
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| CN202010141373.6A CN111287015A (en) | 2020-03-04 | 2020-03-04 | Production method of release paper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012035A (en) * | 2020-09-24 | 2020-12-01 | 惠州市源江印刷有限公司 | Manufacturing method of environment-friendly deoxygenation drying packaging paper |
| CN112878090A (en) * | 2021-03-29 | 2021-06-01 | 岳阳林纸股份有限公司 | CCK release paper and preparation method thereof |
| CN115506181A (en) * | 2022-10-12 | 2022-12-23 | 岳阳林纸股份有限公司 | White release base paper and manufacturing method thereof |
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| CN112878090A (en) * | 2021-03-29 | 2021-06-01 | 岳阳林纸股份有限公司 | CCK release paper and preparation method thereof |
| CN115506181A (en) * | 2022-10-12 | 2022-12-23 | 岳阳林纸股份有限公司 | White release base paper and manufacturing method thereof |
| CN115506181B (en) * | 2022-10-12 | 2023-11-24 | 岳阳林纸股份有限公司 | White release base paper and manufacturing method thereof |
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