CN111676735B - Preparation method of craft packaging paper for baking - Google Patents
Preparation method of craft packaging paper for baking Download PDFInfo
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- CN111676735B CN111676735B CN202010418755.9A CN202010418755A CN111676735B CN 111676735 B CN111676735 B CN 111676735B CN 202010418755 A CN202010418755 A CN 202010418755A CN 111676735 B CN111676735 B CN 111676735B
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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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
- D21D1/30—Disc mills
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- 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
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
-
- 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
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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
- 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
- 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
- D21H21/38—Corrosion-inhibiting agents or anti-oxidants
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention relates to the field of papermaking, and provides a preparation method of craft packaging paper for baking aiming at the problem that a coating of barbecue paper is not safe enough, which comprises the following steps: taking northern wood needle leaf wood pulp as a fiber raw material, adding bamboo charcoal powder accounting for 1-3% of the mass of pulp after pulping, uniformly dispersing, making paper by using a fourdrinier machine to obtain base paper, coating a waterproof breathable film on the surface of the paper by using a surface applicator roll as a non-stick layer, drying by using a drying cylinder, and then sequentially carrying out calendaring, curling and rewinding to obtain the baking process packaging paper. According to the invention, bamboo charcoal powder is added into the fiber raw material to accelerate the baking of food; the waterproof and breathable film is used as a coating of the craft packaging paper, has good waterproof and oilproof performance, good lubricating property and stable chemical property, can be used for a long time at 260 ℃ below zero and 180 ℃, and is safe and efficient when the craft packaging paper is used for baking food.
Description
Technical Field
The invention relates to the field of papermaking, in particular to a preparation method of process packaging paper for baking.
Background
When roasting meat, cushion paper is required to be arranged at the bottom of the baking tray to prevent meat from being stuck on the baking tray, so that the baking tray is convenient to clean; the paper can not be burnt and can be repeatedly used for 3 or 4 times, so that the paper is required to have the characteristics of adhesion resistance, high temperature resistance, good stripping effect, high strength and the like. The existing barbecue paper is mostly coated with aluminum foil layers or silicon oil layers on both sides by wood pulp bottom paper, so that the effects of non-sticking, water resistance, oil resistance, high heat resistance and the like are achieved. Metal can be separated out from the aluminum foil layer in the roasting process, particularly after sauce and acidic substances are added; and the silicone oil is soluble in an oily environment, so that chemical substances can be released in the barbecue process, and the health of human bodies is harmed. For example, chinese patent CN110387768A discloses a method for preparing baking paper with good oil and grease resistance, in which silicone resin is used as main resin to prepare an oil-proof coating, the silicone resin has excellent properties of thermal oxidation stability, electrical insulation performance, weather resistance, water resistance, salt spray resistance, mold resistance, biocompatibility and the like, and the prepared oil-proof coating has good peeling property, and has the characteristics of good high temperature resistance, low temperature resistance, good hydrophobicity and the like, so that the prepared baking paper has good high temperature resistance and peeling property. However, after heating for 24 hours at 250 ℃, the organic silicon loses 2 to 8 percent of weight, and the part of the organic silicon can enter food and is unsafe to use. Accordingly, an ideal solution is needed.
Disclosure of Invention
The invention provides a preparation method of craft packaging paper for baking in order to overcome the problem that the coating of the baking paper is not safe enough, which adds bamboo charcoal powder into the fiber raw material to accelerate the baking of food; the waterproof and breathable film is used as a coating of the craft packaging paper, has good waterproof and oilproof performance, good lubricating property and stable chemical property, can be used for a long time at 260 ℃ below zero and 180 ℃, and is safe and efficient when the craft packaging paper is used for baking food.
In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of craft packaging paper for baking comprises the following steps: taking northern wood needle leaf wood pulp as a fiber raw material, adding bamboo charcoal powder accounting for 1-3% of the mass of pulp after pulping, uniformly dispersing, making paper by using a fourdrinier machine to obtain base paper, coating a waterproof breathable film on the surface of the paper by using a surface applicator roll as a non-stick layer, drying by using a drying cylinder, and then sequentially carrying out calendaring, curling and rewinding to obtain the baking process packaging paper.
The invention uses the northern wood needle leaf wood pulp with high strength as the fiber raw material, ensures the strength of the craft packaging paper and is not easy to break. The bamboo charcoal powder is formed by firing alpine moso bamboos at high temperature, has a honeycomb-shaped microporous structure, is endowed with special adsorption capacity, is easy to generate smoke by being generally roasted by charcoal, and can purify part of air by the bamboo charcoal in the process wrapping paper; some fresh foods have fishy smell before being baked, the bamboo charcoal can adsorb and remove peculiar smell, so that the baking environment is more comfortable, and the faint scent of the bamboo charcoal powder can also add flavor to baked foods. More importantly, the bamboo charcoal also has the functions of heat storage and far infrared ray radiation to generate heat energy, and compared with the common craft wrapping paper, the craft wrapping paper added with the bamboo charcoal can enable food prepared rehmannia root to be faster, so that the burning of the paper caused by long-time heating is avoided. The waterproof and air-permeable film with high lubrication and non-stick properties is a high molecular compound formed by polymerizing tetrafluoroethylene, and the polytetrafluoroethylene can be used for a long time at-180 ℃ and 260 ℃, is high-temperature resistant and can be repeatedly used for many times. The waterproof breathable film also has corrosion resistance, seasoning sauce and acidic substances can be added into the craft packaging paper in the barbecue process, and the baked food is more delicious and delicious. The bamboo charcoal powder and the waterproof breathable film are matched with each other, when polytetrafluoroethylene is just sprayed on the surface of the base paper, a part of the bamboo charcoal powder is distributed in the polytetrafluoroethylene in a particle shape to induce a large number of silver stripes and shear bands, control the further development of the silver stripes and consume energy, so that the impact strength of the craft wrapping paper can be improved; the unique performance of the waterproof and breathable film ensures that the bamboo charcoal powder can not prevent the bamboo charcoal powder from playing the roles of purifying gas and releasing faint scent while being waterproof and oil-proof. The calendering can improve the smoothness and the glossiness of paper and is helpful for improving the oil resistance of craft packaging paper.
Preferably, the preparation method of the bamboo charcoal powder comprises the following steps:
soaking bamboo charcoal in glacial acetic acid solution for 4-5 h, taking out, washing with water, oven drying, and grinding into nanopowder;
dissolving 1, 6-bis (trimethoxy) silicon-based hexane in isopropanol, adding nitric acid with the mass fraction of 5%, wherein the molar ratio of the 1, 6-bis (trimethoxy) silicon-based hexane to the isopropanol to the nitric acid is 1 (40-100) to (0.05-0.2), and hydrolyzing at 50-60 ℃ for 0.5-1h to obtain silicon source precursor hydrosol;
(3) dispersing the nano powder obtained in the step (1) in water according to the mass fraction of 20-40%, heating at 60-80 ℃, adding polyethylene glycol and the silicon source precursor hydrolysis sol obtained in the step (2), wherein the mass ratio of the nano powder to the polyethylene glycol to the 1, 6-bis (trimethoxy) silicon-based hexane is (2-15): 10-20):100, reacting for 1-3 h, taking out, washing with water, and calcining at 600 ℃ for 15-25 min to obtain the bamboo charcoal powder coated with the mesoporous layer.
The uncoated nano bamboo charcoal powder is easy to agglomerate in the fiber raw material to cause uneven distribution, and the performance of the craft wrapping paper can be influenced. The polyethylene glycol and the silicon source precursor hydrolysis sol are subjected to cross-linking copolymerization to cover the surface of the nano powder, so that the surface of the nano powder contains hydroxyl, and the dispersibility and compatibility of the nano powder in fiber raw materials can be effectively improved. The calcination causes the covering layer to generate mesopores, thereby avoiding the influence of the bamboo charcoal powder on the play of the bamboo charcoal powder due to too tight wrapping of the bamboo charcoal powder.
Preferably, the fiber raw material is dissolved with sulfite. Dissolving pulp by sulfite to obtain single alpha-cellulose pulp, almost without hemicellulose and wood plastic. Because the hemicellulose and the lignin influence the temperature resistance of the paper, the single alpha-cellulose pulp is the most temperature-resistant chemical component in the plant raw materials, and is used as the basic raw material of the process wrapping paper, the maximum temperature resistance of the natural fiber raw material can be obtained theoretically, so that the wrapping paper has the characteristics of resisting the high temperature of 240 ℃ and 250 ℃ and not deteriorating for half an hour. And compared with the mixed pulp of the sulfite pulp and the sulfate pulp, the 100 percent sulfite pulp has lower energy consumption and better oil resistance.
Preferably, the pulp is beaten by a high consistency refiner. The high-concentration beating is that the fibers are beaten by the mutual friction of high-concentration pulp between the millstones, and compared with the low-concentration beating, the high-concentration beating has the advantages that the average fiber length is large, and short fibers and fine fiber fragments are reduced. The high-concentration beaten fiber has obvious brooming and longitudinal splitting, is soft and rich in swelling property, is mostly twisted, has good shrinkage performance, and can greatly improve the obdurability and bursting strength of paper.
The beating degree is 85-95 DEG SR. The inventor finds out through experiments that the oil-proof effect begins to be obvious when the beating degree is more than 85 DEG SR, and the high beating degree increases the energy consumption.
Preferably, the fourdrinier machine is operated in a fully closed mode, with the paper moving all the way to the dry end of the machine. Therefore, the occurrence of paper breaking can be reduced, and the yield can be improved.
Preferably, the surface of the drying cylinder is sprayed with a release agent. The process packaging paper is guaranteed not to stick to the cylinder surface during production and can be effectively peeled from the cylinder surface.
Preferably, the thickness of the base paper is 0.1-0.3 mm, and the thickness of the non-stick layer is 0.01-0.03 mm. Too thin is not easy to produce, and too thick wastes materials.
Therefore, the beneficial effects of the invention are as follows: (1) the bamboo charcoal is added into the fiber raw materials, so that part of air can be purified, peculiar smell can be adsorbed and removed, the barbecue environment is more comfortable, the faint scent of the bamboo charcoal can also add flavor to baked food, and the bamboo charcoal also has the functions of heat storage and far infrared ray radiation to generate heat energy; (2) the waterproof breathable film with high lubrication and non-stick properties is used as a non-stick layer, can be used for a long time at 260 ℃ below zero, is high temperature resistant, can be repeatedly used, has corrosion resistance, can be added with sauce and acidic substances in the baking process of the craft packaging paper, and is more delicious and delicious in baked food; (3) the polyethylene glycol and the silicon source precursor hydrolytic sol are subjected to cross-linking copolymerization and covered on the surface of the nano bamboo charcoal powder, so that the dispersibility and the compatibility of the nano bamboo charcoal powder in a fiber raw material can be effectively improved, and the covering layer generates mesopores by calcination, thereby avoiding the influence on the play of the bamboo charcoal powder caused by too tight coating of the bamboo charcoal powder.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
In the present invention, unless otherwise specified, all the raw materials and equipment used are commercially available or commonly used in the art, and the methods in the examples are conventional in the art unless otherwise specified.
Example 1
A preparation method of craft packaging paper for baking comprises the following steps: the method comprises the steps of dissolving northern softwood pulp serving as a fiber raw material by using sulfite, pulping by using a high-concentration pulping machine until the pulping degree is 90 DEG SR, adding bamboo charcoal powder accounting for 3% of the pulp by mass, uniformly dispersing, papermaking by using a fourdrinier machine to obtain base paper, producing the base paper in a totally closed manner by using the fourdrinier machine, and pasting a blanket on the paper from a wet part to a dry part in the whole process. And coating a waterproof breathable film on the surface of the paper by using a surface applicator roll to serve as a non-sticky layer, drying the paper by using a drying cylinder, spraying a stripping agent on the surface of the drying cylinder, and then sequentially performing calendaring, curling and rewinding to obtain the baking process packaging paper, wherein the thickness of the base paper is 0.1 mm, and the thickness of the non-sticky layer is 0.01 mm. The preparation method of the bamboo charcoal powder comprises the following steps: soaking bamboo charcoal in glacial acetic acid solution for 4 hr, taking out, washing with water, oven drying, and grinding into nanopowder.
Example 2
A preparation method of craft packaging paper for baking comprises the following steps: the method comprises the steps of dissolving northern softwood pulp serving as a fiber raw material by using sulfite, pulping by using a high-concentration pulping machine until the pulping degree is 90 DEG SR, adding bamboo charcoal powder accounting for 3% of the pulp by mass, uniformly dispersing, papermaking by using a fourdrinier machine to obtain base paper, producing the base paper in a totally closed manner by using the fourdrinier machine, and pasting a blanket on the paper from a wet part to a dry part in the whole process. And coating a waterproof breathable film on the surface of the paper by using a surface applicator roll to serve as a non-sticky layer, drying the paper by using a drying cylinder, spraying a stripping agent on the surface of the drying cylinder, and then sequentially performing calendaring, curling and rewinding to obtain the baking process packaging paper, wherein the thickness of the base paper is 0.1 mm, and the thickness of the non-sticky layer is 0.01 mm. The preparation method of the bamboo charcoal powder comprises the following steps:
(1) soaking bamboo charcoal in glacial acetic acid solution for 4 h, taking out, washing with water, oven drying, and grinding into nanopowder;
(2) dissolving 1, 6-bis (trimethoxy) silicon-based hexane in isopropanol, adding nitric acid with the mass fraction of 5%, wherein the molar ratio of the 1, 6-bis (trimethoxy) silicon-based hexane to the isopropanol to the nitric acid is 1:50:0.1, and hydrolyzing at 60 ℃ for 0.5 h to obtain silicon source precursor hydrosol;
(3) dispersing the nano powder obtained in the step (1) in water according to the mass fraction of 30%, heating at 70 ℃, adding polyethylene glycol and the silicon source precursor hydrosol obtained in the step (2), reacting for 2 hours, taking out, washing with water, and calcining for 25 min at 500 ℃ to obtain the mesoporous layer-coated bamboo charcoal powder, wherein the mass ratio of the nano powder to the polyethylene glycol to the 1, 6-bis trimethoxy silicon-based hexane is 10:15: 100.
Example 3
A preparation method of craft packaging paper for baking comprises the following steps: the method comprises the steps of dissolving northern softwood pulp serving as a fiber raw material by using sulfite, pulping by using a high-concentration pulping machine until the pulping degree is 85 DEG SR, adding bamboo charcoal powder with the mass of 2% of pulp, uniformly dispersing, papermaking by using a fourdrinier machine to obtain base paper, producing the base paper in a totally closed mode by using the fourdrinier machine, and pasting a blanket on the paper from a wet part to a dry part in the whole process. And coating a waterproof breathable film on the surface of the paper by using a surface applicator roll to serve as a non-sticky layer, drying the paper by using a drying cylinder, spraying a stripping agent on the surface of the drying cylinder, and then sequentially performing calendaring, curling and rewinding to obtain the baking process packaging paper, wherein the thickness of the base paper is 0.3 mm, and the thickness of the non-sticky layer is 0.02 mm. The preparation method of the bamboo charcoal powder comprises the following steps:
(1) soaking bamboo charcoal in glacial acetic acid solution for 5 h, taking out, washing with water, oven drying, and grinding into nanopowder;
(2) dissolving 1, 6-bis (trimethoxy) silicon-based hexane in isopropanol, adding nitric acid with the mass fraction of 5%, wherein the molar ratio of the 1, 6-bis (trimethoxy) silicon-based hexane to the isopropanol to the nitric acid is 1:40:0.05, and hydrolyzing at 50 ℃ for 1h to obtain silicon source precursor hydrosol;
(3) dispersing the nano powder obtained in the step (1) in water according to the mass fraction of 20%, heating at 80 ℃, adding polyethylene glycol and the silicon source precursor hydrosol obtained in the step (2), reacting for 1h, taking out, washing with water, and calcining for 15 min at 600 ℃ to obtain the bamboo charcoal powder coated with the mesoporous layer, wherein the mass ratio of the nano powder, the polyethylene glycol and the 1, 6-bis (trimethoxy) silicon-based hexane is 2:10: 100.
Example 4
A preparation method of craft packaging paper for baking comprises the following steps: the method comprises the steps of dissolving northern softwood pulp serving as a fiber raw material by using sulfite, pulping by using a high-concentration pulping machine until the pulping degree is 95 DEG SR, adding bamboo charcoal powder accounting for 1% of the pulp by mass, uniformly dispersing, papermaking by using a fourdrinier machine to obtain base paper, producing the base paper in a totally closed manner by using the fourdrinier machine, and pasting a blanket on the paper from a wet part to a dry part in the whole process. And coating a waterproof breathable film on the surface of the paper by using a surface applicator roll to serve as a non-sticky layer, drying the paper by using a drying cylinder, spraying a stripping agent on the surface of the drying cylinder, and then sequentially performing calendaring, curling and rewinding to obtain the baking process packaging paper, wherein the thickness of the base paper is 0.2 m, and the thickness of the non-sticky layer is 0.03 mm. The preparation method of the bamboo charcoal powder comprises the following steps:
(1) soaking bamboo charcoal in glacial acetic acid solution for 4 h, taking out, washing with water, oven drying, and grinding into nanopowder;
(2) dissolving 1, 6-bis (trimethoxy) silicon-based hexane in isopropanol, adding nitric acid with the mass fraction of 5%, wherein the molar ratio of the 1, 6-bis (trimethoxy) silicon-based hexane to the isopropanol to the nitric acid is 1:100:0.2, and hydrolyzing at 50 ℃ for 0.8 h to obtain silicon source precursor hydrosol;
(3) dispersing the nano powder obtained in the step (1) in water according to the mass fraction of 40%, heating at 60 ℃, adding polyethylene glycol and the silicon source precursor hydrosol obtained in the step (2), reacting for 3 hours, taking out, washing with water, and calcining for 20 minutes at 520 ℃ to obtain the bamboo charcoal powder coated with the mesoporous layer, wherein the mass ratio of the nano powder, the polyethylene glycol and the 1, 6-bis trimethoxy silicon-based hexane is 15:20: 100.
Comparative example 1
A preparation method of craft packaging paper for baking comprises the following steps: north wood needle leaf wood pulp is used as a fiber raw material, sulfite is used for dissolving, a high-concentration pulping machine is used for pulping until the pulping degree is 90 DEG SR, then a fourdrinier paper machine is used for papermaking to obtain base paper, the fourdrinier paper machine is used for totally-enclosed production, and the whole process from a wet part to a dry part of the paper is carried out by attaching a blanket. And coating a waterproof breathable film on the surface of the paper by using a surface applicator roll to serve as a non-sticky layer, drying the paper by using a drying cylinder, spraying a stripping agent on the surface of the drying cylinder, and then sequentially performing calendaring, curling and rewinding to obtain the baking process packaging paper, wherein the thickness of the base paper is 0.1 mm, and the thickness of the non-sticky layer is 0.01 mm.
Comparative example 2
A preparation method of craft packaging paper for baking comprises the following steps: north wood needle leaf wood pulp is used as a fiber raw material, sulfite is used for dissolving, a high-concentration pulping machine is used for pulping until the pulping degree is 90 DEG SR, then a fourdrinier paper machine is used for papermaking to obtain base paper, the fourdrinier paper machine is used for totally-enclosed production, and the whole process from a wet part to a dry part of the paper is carried out by attaching a blanket. And coating silicon oil on the surface of the paper by using a surface applicator roll to serve as a non-stick layer, drying the paper by using a drying cylinder, spraying a stripping agent on the surface of the drying cylinder, and then sequentially performing calendaring, curling and rewinding to obtain the baking process packaging paper, wherein the thickness of the base paper is 0.1 mm, and the thickness of the non-stick layer is 0.01 mm.
Result detection
1. The process wrappers for baking produced by the process of the invention (examples 1-4) all meet the following conditions: 1) tightness more than or equal to 1.0 g/cm3(ii) a 2) Tensile strength: the longitudinal direction is more than or equal to 3.0 KN/m, and the transverse direction is more than or equal to 2.0 KN/m; 3) the opacity is less than or equal to 45 percent; 4) the oil resistance grade reaches 12 grades; 5) the peel strength is less than or equal to 2N.
2. To prove that the bamboo charcoal powder is effective for shortening the heating time of food, experiments were made on the art wrapping paper for baking of examples 1, 2 and comparative example 1. A beef patty was divided into three equal portions, and the portions were baked together on a charcoal fire to seven ripeness, which took 7min for example 1,6 min for example 2, and 10 min for comparative example 1. Comparative example 1 is plain paper without bamboo charcoal powder, and the heating time is longest. Example 1 containing bamboo charcoal powder, the time consumption is shortened, which shows that the bamboo charcoal powder can actually accelerate the ripening of food. Example 2 contains bamboo charcoal powder and the time consumption of the bamboo charcoal powder is the shortest because the bamboo charcoal powder is distributed more uniformly after the coating treatment.
3. To demonstrate that the heat resistance of the baked process wrapper of the present invention was improved, the baked process wrappers of example 2 and comparative example 2 were left at a high temperature of 250 ℃ for half an hour, and the paper of comparative example 2 became scorched, but the paper of example 2 was unchanged. The technical packaging paper for baking has good heat resistance.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The preparation method of the craft packaging paper for baking is characterized by comprising the following steps:
taking northern wood needle leaf wood pulp as a fiber raw material, adding bamboo charcoal powder accounting for 1-3% of the mass of pulp after pulping, uniformly dispersing, making paper by using a fourdrinier machine to obtain base paper, coating a waterproof and breathable film on the surface of the paper by using a surface applicator roll to serve as a non-sticky layer, drying by using a drying cylinder, and then sequentially carrying out calendaring, curling and rewinding to obtain the process packaging paper for baking;
the preparation method of the bamboo charcoal powder comprises the following steps:
(1) soaking bamboo charcoal in glacial acetic acid solution for 4-5 h, taking out, washing with water, oven drying, and grinding into nanopowder;
(2) dissolving 1, 6-bis (trimethoxy) silicon-based hexane in isopropanol, adding nitric acid with the mass fraction of 5%, wherein the molar ratio of the 1, 6-bis (trimethoxy) silicon-based hexane to the isopropanol to the nitric acid is 1 (40-100) to (0.05-0.2), and hydrolyzing at 50-60 ℃ for 0.5-1h to obtain silicon source precursor hydrosol;
(3) dispersing the nano powder obtained in the step (1) in water according to the mass fraction of 20-40%, heating at 60-80 ℃, adding polyethylene glycol and the silicon source precursor hydrolysis sol obtained in the step (2), wherein the mass ratio of the nano powder to the polyethylene glycol to the 1, 6-bis (trimethoxy) silicon-based hexane is (2-15): 10-20):100, reacting for 1-3 h, taking out, washing with water, and calcining at 600 ℃ for 15-25 min to obtain the bamboo charcoal powder coated with the mesoporous layer.
2. The method for preparing craft packaging paper for baking as claimed in claim 1, wherein the fiber raw material is dissolved with sulfite.
3. The method for preparing craft packaging paper for baking as claimed in claim 1, wherein beating is carried out by a high consistency refiner.
4. A process wrapping paper for baking according to claim 1 or 3, wherein the freeness is 85 to 95 ° SR.
5. The method of making a baking art wrapper according to claim 1 wherein the fourdrinier machine is operated in a fully enclosed manner with the felt being attached all the way from the wet end to the dry end.
6. The method for preparing craft packaging paper for baking as claimed in claim 1, wherein a peeling agent is sprayed on the surface of the drying cylinder.
7. A process wrapper for baking as claimed in claim 1, 5 or 6, wherein the base paper has a thickness of 0.1 to 0.3 mm and the non-stick layer has a thickness of 0.01 to 0.03 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010418755.9A CN111676735B (en) | 2020-05-18 | 2020-05-18 | Preparation method of craft packaging paper for baking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010418755.9A CN111676735B (en) | 2020-05-18 | 2020-05-18 | Preparation method of craft packaging paper for baking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111676735A CN111676735A (en) | 2020-09-18 |
| CN111676735B true CN111676735B (en) | 2021-12-31 |
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| CA639580A (en) * | 1957-08-01 | 1962-04-10 | The Polymer Corporation | Coating process including application of liquid preceding immersion in fluidized powder bed |
| CN1483892A (en) * | 2003-06-27 | 2004-03-24 | 遂昌县兴昌纸业有限公司 | Bamboo-carbon paper |
| CN101947442B (en) * | 2010-09-07 | 2012-11-28 | 桂林理工大学 | Method for synthesizing nano zinc oxide/bamboo charcoal photocatalysis material by precipitation and impregnation |
| CN102885401A (en) * | 2011-07-19 | 2013-01-23 | 夏涛 | Efficient cigarette filter containing nano bamboo charcoal material |
| CN103535376B (en) * | 2013-09-15 | 2015-07-08 | 浙江理工大学 | Preparation method of nanometer zinc oxide-bamboo charcoal composite particle with antibacterial and adsorption functions |
| CN105862491A (en) * | 2016-05-30 | 2016-08-17 | 湖北工业大学 | High-temperature-resistant barbecue paper and making method thereof |
| CN107419587A (en) * | 2017-08-11 | 2017-12-01 | 湖北工业大学 | High-temperature resistant roasting paper and its manufacture method |
| CN108285709A (en) * | 2018-01-23 | 2018-07-17 | 合肥达户电线电缆科技有限公司 | A kind of environment-friendly type emulsion paint and preparation method thereof |
| CN109881519A (en) * | 2019-03-21 | 2019-06-14 | 岳阳林纸股份有限公司 | A kind of preparation process baking body paper |
| CN110240233B (en) * | 2019-06-18 | 2022-04-22 | 江苏居安环境工程有限公司 | Preparation method and application of modified bamboo charcoal |
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