CN113417170A - Tobacco fiber white cardboard and preparation method thereof - Google Patents

Tobacco fiber white cardboard and preparation method thereof Download PDF

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Publication number
CN113417170A
CN113417170A CN202110765742.3A CN202110765742A CN113417170A CN 113417170 A CN113417170 A CN 113417170A CN 202110765742 A CN202110765742 A CN 202110765742A CN 113417170 A CN113417170 A CN 113417170A
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CN
China
Prior art keywords
paper layer
pulp
layer
coating
tobacco
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Pending
Application number
CN202110765742.3A
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Chinese (zh)
Inventor
李飞
卢诗强
马洪生
米会亮
刘智维
关则盈
肖全辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhuhai Huafeng Paper Co ltd
Zhuhai Hongta Renheng Packaging Co ltd
Original Assignee
Zhuhai Huafeng Paper Co ltd
Zhuhai Hongta Renheng Packaging Co ltd
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Application filed by Zhuhai Huafeng Paper Co ltd, Zhuhai Hongta Renheng Packaging Co ltd filed Critical Zhuhai Huafeng Paper Co ltd
Priority to CN202110765742.3A priority Critical patent/CN113417170A/en
Publication of CN113417170A publication Critical patent/CN113417170A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
    • 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
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • 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
    • D21H11/14—Secondary fibres
    • 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
    • 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
    • D21H19/385—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
    • 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
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • 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
    • D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/26—All layers being made of paper or paperboard

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

The invention provides a tobacco fiber white cardboard and a preparation method thereof, and the tobacco fiber white cardboard comprises a raw paper layer, a coating layer coated on the upper surface of the raw paper layer, or/and a back coating coated on the lower surface of the raw paper layer, wherein the raw paper layer comprises a surface paper layer, a core paper layer and a bottom paper layer; the coating layer comprises a top coating layer, a core coating layer and a precoating layer; tobacco fiber pulp accounting for 1-30% of the whole white cardboard is added into the raw paper layer according to the mass percentage, the tobacco fiber pulp is extracted from tobacco stems and is prepared by mechanical pulping, the net surfing concentration of the mixed pulp is 0.5-0.8%, and the prepared quantitative amount is 60-200 g/m2And the tobacco fiber pulp sheet base or the tobacco stem pulp with the water content less than or equal to 25 percent can ensure that the tobacco fiber pulp is convenient to store and transport, and the prepared tobacco fiber pulp sheet base or the prepared tobacco stem pulp is manufactured on a cigarette coating white cardboard paper machine, and is added according to different proportions aiming at paper to obtain different appearance effects, so that the tobacco stem resources are more fully utilized.

Description

Tobacco fiber white cardboard and preparation method thereof
[ technical field ] A method for producing a semiconductor device
The invention relates to a papermaking technology, in particular to a tobacco fiber white cardboard and a preparation method thereof.
[ background of the invention ]
The annual production of tobacco stems in China is about 450 million tons, the conventional treatment of the tobacco stems mainly adopts extensive means such as burning, discarding and the like, is not economical and affects the environment, and improper treatment modes also easily cause the occurrence and the popularity of tobacco plant diseases and insect pests. The comprehensive research is carried out in the aspects of preparing paper pulp, ethanol, biomass liquid and the like through analyzing the physicochemical properties of the tobacco stems abroad. In recent years, domestic scientific and technological workers explore from the aspects of extracting nicotine, producing organic fertilizers, preparing biomass fuels, preparing activated carbon and the like and obtain certain results, but compared with foreign researches, the method is not fine enough, has the problems of unreasonable resource utilization and low comprehensive utilization rate, and is a technical problem which needs to be solved urgently in the tobacco industry how to reasonably utilize tobacco stems and reduce environmental pollution.
The tobacco stems are made into the form of tobacco stem powder or tobacco stem pulp and added into the paper, so that the tobacco elements in the paper are reflected, the production and manufacturing cost of the paper is further reduced, and the prior art discloses the tobacco stem powder or the tobacco stem pulp. A large amount of tobacco waste water is caused in the production process of directly adding the tobacco stalk powder into the coated white cardboard, the pretreatment process of the tobacco stalk powder is complicated, the treatment efficiency is low, and the cost is high; and because the particle size of the processed tobacco stalk powder is small, the tobacco stalk powder is easy to lose in the paper making process, and finally, the tobacco elements remained in the paper are few, so that the economic benefit is greatly influenced. The tobacco stem pulp can be continuously added on line in the production process of the coated ivory board, but the publicly reported tobacco stem chemical pulp needs a large amount of cooking chemicals in the preparation process, and the yield of the tobacco stem pulp is low; meanwhile, the tobacco stem pulp made of tobacco stems is generally prepared into wet pulp (the water content is about 80 percent approximately), and the wet pulp is conveyed to a paper making enterprise in a packaging mode of bagging by one ton to produce the tobacco fiber white cardboard; the main problems of the method are that the tobacco fiber pulp is wet pulp, the storage life is short, the transportation efficiency is low, and the transportation cost is high. The tobacco stalk powder and the tobacco stalk wet pulp are added into the paper, and the problems of processing technology and economic benefit exist.
[ summary of the invention ]
The invention aims to solve the problems of high water content and difficult transportation and storage of tobacco stalk fibers in the prior art, the tobacco stalk wet pulp is processed into tobacco fiber pulp sheets with the water content of less than 25 percent in a paper-based papermaking mode, the tobacco fiber pulp sheets are easy to store and convenient to transport, and the tobacco fiber white cardboard is added according to different proportions aiming at paper to obtain different paper appearance effects, so that the tobacco stalk resources are more fully utilized, and the preparation method thereof.
In order to achieve the purpose of the invention, the technical scheme is as follows:
the tobacco fiber white cardboard comprises a raw paper layer, a coating layer coated on the upper surface of the raw paper layer, or/and a back coating layer coated on the lower surface of the raw paper layer;
the raw paper layer comprises a surface paper layer, a core paper layer and a bottom paper layer which are sequentially laminated from top to bottom;
the coating layer comprises a top coating layer, a core coating layer and a precoating layer from top to bottom;
tobacco fiber pulp which accounts for 1-30% of the whole white cardboard is added into the raw paper layer according to the mass percentage;
the tobacco fiber pulp is mixed pulp, the concentration of the mixed pulp on the net is 0.4-0.9%, and the prepared quantitative amount is 60-200 g/m2And the water content is less than or equal to 25 percent.
Preferably, tobacco fiber pulp accounting for 2-30% of the whole paper layer is added into the core paper layer, or/and the surface paper layer, or/and the bottom paper layer of the raw paper layer according to mass percentage.
Preferably, the pulp of the surface paper layer consists of 70-90% of bleached hardwood sulfate pulp and 10-30% of bleached softwood sulfate pulp;
the pulp of the core paper layer comprises 2-30% of tobacco fiber pulp, 20-40% of bleached hardwood sulfate pulp, 5-25% of bleached softwood sulfate pulp, 30-50% of bleached chemithermomechanical pulp and 20-40% of broken paper;
the pulp of the bottom paper layer comprises 60-90% of bleached hardwood sulfate pulp, 5-30% of bleached softwood sulfate pulp and 5-10% of unbleached softwood sulfate pulp.
Preference is given toIn a fixed amount of 220g/m2For example, the basis weight of the face paper layer is 30-45 g/m2The basis weight of the core paper layer is 110-130 g/m2The basis weight of the base paper layer is 30-40 g/m2。
Preferably, the composition of the precoat or core coat, in parts by weight, each independently comprises: 100 parts of calcium carbonate, 11-16 parts of styrene-butadiene latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersing agent, 0.35 part of water repellent agent, 0.3 part of lubricating agent, 0.05 part of defoaming agent, 0.1 part of foam inhibitor, 0.04 part of caustic soda and 0.02 part of bactericide.
Preferably, the composition of the top coat comprises, in parts by weight: 70-80 parts of calcium carbonate, 20-30 parts of porcelain clay, 12-17 parts of styrene-butadiene latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersing agent, 0.6 part of water repellent agent, 0.5 part of lubricating agent, 0.07 part of defoaming agent, 0.2 part of foam inhibitor, 0.12 part of caustic soda and 0.02 part of bactericide.
Preferably, the total coating weight of the coating layer is 25-42 g/m2The coating weight of the precoat layer is 10-13 g/m2The coating weight of the core coating is 5-8 g/m2The coating weight of the top coating is 8-12 g/m2。
Preferably, the raw paper layer further comprises a lining paper layer positioned between the surface paper layer and the core paper layer, the front surface of the raw paper layer adopts a four-layer fiber structure which is beneficial to improving the strength of the front surface and is formed by overlapping the surface paper layer and the lining paper layer, and the chemical pulp adopted by the lining paper layer is bleached sulfate broad-leaved pulp with the basis weight of 220g/m2Taking the tobacco fiber ivory board as an example, the basis weight of the liner paper layer is 30-50 g/m2。
Preferably, the back coating is composed of 9-13% of starch glue or coating, and the coating weight of the starch glue is 1.0-2.0 g/m2The coating weight is 6-11 g/m2。
A preparation method of a tobacco fiber white cardboard comprises the following steps:
preparing sizing agents of the surface paper layer, or \ and the liner paper layer, the core paper layer and the bottom paper layer, wherein the sizing agents of the core paper layer, or \ and the surface paper layer, or \ and the liner paper layer, or \ and the bottom paper layer are directly added with tobacco fiber sizing agent base pieces or tobacco stem sizing agents according to the proportion;
then, respectively disintegrating, mixing, pulping and filtering;
then, the surface paper layer, or/and the liner paper layer, the core paper layer and the bottom paper layer are sequentially superposed and compounded, pressed, dried and subjected to surface sizing to obtain a raw paper layer;
then sequentially coating a precoating layer, a core coating layer and a surface coating layer on the surface paper layer of the raw paper layer;
coating a back coating on the bottom surface layer of the raw paper layer, and drying;
and finally, coiling, repeating and packing to obtain the finished product of the tobacco fiber ivory board.
The invention has the advantages that:
according to the invention, the tobacco stem wet pulp is processed into the tobacco fiber pulp sheet base or the tobacco stem pulp in a paper-based papermaking mode, the moisture content of the tobacco fiber pulp sheet base or the tobacco stem pulp is below 25%, and the convenience in storage and transportation of the tobacco fiber pulp sheet base or the tobacco stem pulp can be ensured. The prepared tobacco fiber pulp sheet base or tobacco stem pulp is manufactured on a cigarette coating white cardboard paper machine, and is added according to different proportions aiming at paper, so that different appearance effects are obtained, and the tobacco stem resources are more fully utilized.
The tobacco fiber pulp sheet base or tobacco stem pulp with low water content is adopted, the problem that the tobacco fiber pulp is difficult to store and transport is solved, the storage time is prolonged, the transport cost is reduced, and the large-scale continuous production can be met. Through the optimization of the technical process, the problem of high VOC of the tobacco fiber white cardboard is solved, and most organic volatile substances are removed from the tobacco fiber pulp through drying treatment. Because the tobacco fiber pulp is dried, the fibers of the tobacco fiber pulp become softer, and when the tobacco fiber pulp is added into paper, the surface smoothness of the paper is better than that of the paper obtained by directly using the tobacco fiber wet pulp.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a tobacco fiber ivory board according to a first embodiment of the present invention;
fig. 2 is a flow chart of a production process of the tobacco fiber ivory board according to an embodiment of the present invention.
[ detailed description ] embodiments
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
The dispersant in the following examples is DS-FS142 available from Toyol New materials, Inc., Shanghai; the lubricant is PROX-AMINE AP purchased from chemical industry Co., Ltd; the water repellent agent is WK-3025N available from Huake New Material science and technology, Inc., Guangzhou. The remaining materials, reagents or equipment may be conventionally commercially available or may be obtained by conventionally known methods, unless otherwise specified.
Example one
A tobacco fiber ivory board, as shown in fig. 1, comprising a raw paper layer 100, and a coating layer 300 and a back coating layer 200 respectively coated on the upper surface and the lower surface of the raw paper layer, wherein: the raw paper layer comprises a surface paper layer 130, a core paper layer 120 and a bottom paper layer 110 which are sequentially stacked from top to bottom; the coating layers include top coat 330, core coat 320, and precoat 310 layers from top to bottom.
The preparation process of the tobacco fiber ivory board has a specific production process flow chart shown in figure 2, and comprises the following steps:
(1) pulping process
A surface paper layer: the pulp of the surface paper layer consists of 75 percent of bleached hardwood sulfate pulp and 25 percent of bleached softwood sulfate pulp, and the pulp sheet is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
Core paper layer: the pulp of the core paper layer comprises 6% of tobacco fiber pulp, 10% of bleached hardwood sulfate pulp, 49% of bleached chemithermomechanical pulp, 5% of bleached softwood sulfate pulp and 30% of broken paper, and the pulp board is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
Wherein, the tobacco fiber pulp is extracted from tobacco stalk raw materials, is ground into pulp by a mechanical method, and is prepared by solid-phase filter pressing, high-concentration pulping, pulp preparation, pulp screening, net surfing molding and drying; when adding, the tobacco fiber pulp base is added into the pulp of the core paper layer by using a chain plate machine, and then mixed and disintegrated by a hydrapulper.
A base paper layer: the pulp of the paper layer consists of 75 percent of bleached broadleaf wood sulfate pulp, 18 percent of bleached softwood sulfate pulp and 7 percent of unbleached softwood sulfate pulp, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is made by a paper machine.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 6kg/t, and the addition amount of aluminum sulfate is 4 kg/t;
the addition amount of rosin in the slurry of the core paper layer is 8kg/t, and the addition amount of aluminum sulfate is 30 kg/t;
the addition amount of rosin in the slurry of the base paper layer is 12 kg/t; the addition amount of aluminum sulfate was 8 kg/t.
(3) Paper machine section
Screening, filtering water in the three layers of slurry respectively, and compounding the three layers of slurry;
pressing pressure: the pressure of the first press was 130kN/m, the pressure of the second press was 720kN/m and the pressure of the third press was 35 kN/m.
And (3) drying: the first section of air pressure of the previous drying is 95kPa, the second section of air pressure is 195kPa and the third section of air pressure is 80 kPa;
surface sizing: starch mass concentration is 6%, and application amount is 2g/m2；
Coating: front three-layer coating, precoating, core coating and surface coating;
precoat, core coat: 100 parts of calcium carbonate, 12 parts of butyl propyl latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.35 part of water repellent agent, 0.3 part of lubricant and 0.05 part of defoaming agent.
And (3) surface coating: 70 parts of calcium carbonate, 30 parts of porcelain clay, 15 parts of styrene-butadiene latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.07 part of water repellent agent, 0.5 part of lubricant, 0.07 part of defoamer, 0.12 part of caustic soda and 0.02 part of bactericide.
And finally, drying, coiling, rewinding, packaging and warehousing.
Example two
The utility model provides a tobacco fiber ivory board, includes raw paper layer and coats coating layer and back coating of coating respectively on the upper surface and the lower surface of raw paper layer, wherein: the raw paper layer comprises a surface paper layer, a core paper layer and a bottom paper layer which are sequentially laminated from top to bottom; the coating layer comprises a top coating layer, a core coating layer and a precoating layer from top to bottom.
The preparation process of the tobacco fiber ivory board comprises the following steps:
(1) pulping process
A surface paper layer: the pulp of the surface paper layer consists of 70 percent of bleached hardwood sulfate pulp and 30 percent of bleached softwood sulfate pulp, and the pulp sheet is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
Core paper layer: the pulp of the core paper layer comprises 8% of tobacco fiber pulp, 10% of bleached hardwood sulfate pulp, 47% of bleached chemithermomechanical pulp, 5% of bleached softwood sulfate pulp and 30% of broken paper, and the pulp board is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
Wherein, the tobacco fiber pulp is extracted from tobacco stalk raw materials, is ground into pulp by a mechanical method, and is prepared by solid-phase filter pressing, high-concentration pulping, pulp preparation, pulp screening, net surfing molding and drying; when adding, the tobacco fiber pulp base is added into the pulp of the core paper layer by using a chain plate machine, and then mixed and disintegrated by a hydrapulper.
A base paper layer: the pulp of the paper layer consists of 75 percent of bleached broadleaf wood sulfate pulp, 17 percent of bleached softwood sulfate pulp and 8 percent of unbleached softwood sulfate pulp, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is made by a paper machine.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 8kg/t, and the addition amount of aluminum sulfate is 10 kg/t;
the addition amount of rosin in the slurry of the core paper layer is 12kg/t, and the addition amount of aluminum sulfate is 30 kg/t;
the addition amount of rosin in the slurry of the base paper layer is 6 kg/t; the addition amount of aluminum sulfate was 8 kg/t.
(3) Paper machine section
Screening, filtering water in the three layers of slurry respectively, and compounding the three layers of slurry;
pressing pressure: the pressure of the first press was 135kN/m, the pressure of the second press was 710kN/m and the pressure of the third press was 40 kN/m.
And (3) drying: the first section of air pressure of the previous drying is 95kPa, the second section of air pressure is 195kPa and the third section of air pressure is 80 kPa;
surface sizing: the mass concentration of the starch is 6 percent, and the application amount is 2g/m 2;
coating: front three-layer coating, precoating, core coating and surface coating;
precoat, core coat: 100 parts of calcium carbonate, 13 parts of styrene-butadiene latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersing agent, 0.35 part of water repellent agent, 0.3 part of lubricating agent and 0.04 part of defoaming agent.
And (3) surface coating: 70 parts of calcium carbonate, 30 parts of porcelain clay, 14 parts of styrene-butadiene latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.07 part of water repellent agent, 0.5 part of lubricant, 0.06 part of defoamer, 0.12 part of caustic soda and 0.02 part of bactericide.
And finally, drying, coiling, rewinding, packaging and warehousing.
EXAMPLE III
A tobacco fiber ivory board, as shown in fig. 1, comprising a raw paper layer 100, and a coating layer 300 and a back coating layer 200 respectively coated on the upper surface and the lower surface of the raw paper layer, wherein: the raw paper layer comprises a surface paper layer 130, a core paper layer 120 and a bottom paper layer 110 which are sequentially stacked from top to bottom; the coating layers include top coat 330, core coat 320, and precoat 310 layers from top to bottom.
The preparation process of the tobacco fiber ivory board has a specific production process flow chart shown in figure 2, and comprises the following steps:
(1) pulping process
A surface paper layer: the pulp of the surface paper layer consists of 76 percent of bleached hardwood sulfate pulp and 24 percent of bleached softwood sulfate pulp, and the pulp sheet is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
Core paper layer: the pulp of the core paper layer comprises 12% of tobacco fiber pulp, 10% of bleached hardwood sulfate pulp, 43% of bleached chemithermomechanical pulp, 5% of bleached softwood sulfate pulp and 30% of broken paper, and the pulp board is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
Wherein, the tobacco fiber pulp is extracted from tobacco stalk raw materials, is ground into pulp by a mechanical method, and is prepared by solid-phase filter pressing, high-concentration pulping, pulp preparation, pulp screening, net surfing molding and drying; when adding, the tobacco fiber pulp base is added into the pulp of the core paper layer by using a chain plate machine, and then mixed and disintegrated by a hydrapulper.
A base paper layer: the pulp of the paper layer consists of 75 percent of bleached broadleaf wood sulfate pulp, 16 percent of bleached softwood sulfate pulp and 9 percent of unbleached softwood sulfate pulp, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is made by a paper machine.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 10kg/t, and the addition amount of aluminum sulfate is 12 kg/t;
the addition amount of rosin in the slurry of the core paper layer is 9kg/t, and the addition amount of aluminum sulfate is 20 kg/t;
the addition amount of rosin in the slurry of the base paper layer is 7 kg/t; the addition amount of aluminum sulfate was 8 kg/t.
(3) Paper machine section
Screening, filtering water in the three layers of slurry respectively, and compounding the three layers of slurry;
pressing pressure: the pressure of the first press was 130kN/m, the pressure of the second press was 720kN/m and the pressure of the third press was 35 kN/m.
And (3) drying: the first section of air pressure of the previous drying is 95kPa, the second section of air pressure is 195kPa and the third section of air pressure is 80 kPa;
surface sizing: starch mass concentration is 6%, and application amount is 2g/m2；
Coating: front three-layer coating, precoating, core coating and surface coating;
precoat, core coat: 100 parts of calcium carbonate, 13 parts of butyl acrylic latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.35 part of water repellent agent, 0.3 part of lubricant and 0.05 part of defoaming agent.
And (3) surface coating: 80 parts of calcium carbonate, 20 parts of porcelain clay, 15 parts of styrene-butadiene latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.07 part of water repellent agent, 0.5 part of lubricant, 0.07 part of defoamer, 0.12 part of caustic soda and 0.02 part of bactericide.
And finally, drying, coiling, rewinding, packaging and warehousing.
Example four
A tobacco fiber ivory board, as shown in fig. 1, comprising a raw paper layer 100, and a coating layer 300 and a back coating layer 200 respectively coated on the upper surface and the lower surface of the raw paper layer, wherein: the raw paper layer comprises a surface paper layer 130, a core paper layer 120 and a bottom paper layer 110 which are sequentially stacked from top to bottom; the coating layers include top coat 330, core coat 320, and precoat 310 layers from top to bottom.
The preparation process of the tobacco fiber ivory board has a specific production process flow chart shown in figure 2, and comprises the following steps:
(1) pulping process
A surface paper layer: the pulp of the surface paper layer consists of 78% bleached hardwood sulfate pulp and 22% bleached softwood sulfate pulp, and the pulp sheet is pulped by a hydrapulper according to a certain proportion, then is screened, pulped, prepared and finally is manufactured by a paper feeder.
Core paper layer: the pulp of the core paper layer comprises 15% of tobacco fiber pulp, 10% of bleached hardwood sulfate pulp, 40% of bleached chemithermomechanical pulp, 5% of bleached softwood sulfate pulp and 30% of broken paper, and the pulp board is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
Wherein, the tobacco fiber pulp is extracted from tobacco stalk raw materials, is ground into pulp by a mechanical method, and is prepared by solid-phase filter pressing, high-concentration pulping, pulp preparation, pulp screening, net surfing molding and drying; when adding, the tobacco fiber pulp base is added into the pulp of the core paper layer by using a chain plate machine, and then mixed and disintegrated by a hydrapulper.
A base paper layer: the pulp of the paper layer consists of 72 percent of bleached broadleaf wood sulfate pulp, 18 percent of bleached softwood sulfate pulp and 10 percent of unbleached softwood sulfate pulp, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is made by a paper machine.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 9kg/t, and the addition amount of aluminum sulfate is 8 kg/t;
the addition amount of rosin in the slurry of the core paper layer is 10kg/t, and the addition amount of aluminum sulfate is 25 kg/t;
the addition amount of rosin in the slurry of the base paper layer is 8 kg/t; the amount of aluminum sulfate added was 9 kg/t.
(3) Paper machine section
Screening, filtering water in the three layers of slurry respectively, and compounding the three layers of slurry;
pressing pressure: the pressure of the first press was 130kN/m, the pressure of the second press was 720kN/m and the pressure of the third press was 35 kN/m.
And (3) drying: the first section of air pressure of the previous drying is 100kPa, the second section of air pressure is 195kPa, and the third section of air pressure is 80 kPa;
surface sizing: starch mass concentration is 6%, and application amount is 2g/m2；
Coating: front three-layer coating, precoating, core coating and surface coating;
precoat, core coat: 100 parts of calcium carbonate, 12 parts of butyl propyl latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.35 part of water repellent agent, 0.3 part of lubricant and 0.05 part of defoaming agent.
And (3) surface coating: 10 parts of calcium carbonate, 20 parts of porcelain clay, 14 parts of styrene-butadiene latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.07 part of water repellent agent, 0.5 part of lubricant, 0.07 part of defoamer, 0.12 part of caustic soda and 0.02 part of bactericide.
And finally, drying, coiling, rewinding, packaging and warehousing.
EXAMPLE five
A tobacco fiber ivory board, comprising a raw paper layer and a coating layer coated on the upper surface of the raw paper layer, wherein: the raw paper layer comprises a surface paper layer, a core paper layer and a bottom paper layer which are sequentially laminated from top to bottom; the coating layer comprises a top coating layer, a core coating layer and a precoating layer from top to bottom.
The preparation process of the tobacco fiber ivory board comprises the following steps:
(1) pulping process
A surface paper layer: the pulp of the surface paper layer consists of 4 percent of tobacco fiber pulp, 66 percent of bleached hardwood sulfate pulp and 30 percent of bleached softwood sulfate pulp, and the pulp sheet is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
Wherein, the tobacco fiber pulp is extracted from tobacco stalk raw materials, mechanical pulp grinding is adopted, and the tobacco fiber pulp is prepared by solid-phase filter pressing, high-concentration pulp making, pulp mixing, pulp screening, net surfing molding and drying; when adding, the tobacco fiber pulp base is added into the pulp of the surface paper layer by using a chain plate machine, and then mixed and disintegrated by a hydrapulper.
Core paper layer: the pulp of the core paper layer comprises 53% of bleached hardwood sulfate pulp, 22% of bleached softwood sulfate pulp and 25% of broke, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally the paper is manufactured by a paper feeder.
A base paper layer: the pulp of the paper layer consists of 80 percent of bleached hardwood sulfate pulp and 20 percent of bleached softwood sulfate pulp, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is made by a paper machine.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 8kg/t, and the addition amount of aluminum sulfate is 10 kg/t;
the addition amount of rosin in the slurry of the core paper layer is 12kg/t, and the addition amount of aluminum sulfate is 30 kg/t;
the addition amount of rosin in the slurry of the base paper layer is 6 kg/t; the addition amount of aluminum sulfate was 8 kg/t.
(3) Paper machine section
Screening, filtering water in the three layers of slurry respectively, and compounding the three layers of slurry;
pressing pressure: the pressure of the first press is 75kN/m, the pressure of the second press is 85kN/m, the pressure of the third press is 550kN/m, and the pressure of the fourth press is 50 kN/m.
And (3) drying: the first section of air pressure of the previous drying is 250kPa, the second section of air pressure is 100kPa, and the third section of air pressure is 70 kPa;
surface sizing: the mass concentration of the starch is 12 percent, and the application amount is 1.5g/m 2;
coating: front three-layer coating, precoating, core coating and surface coating;
precoat, core coat: 100 parts of calcium carbonate, 14 parts of butyl acrylic latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.35 part of water repellent agent, 0.3 part of lubricant and 0.04 part of defoaming agent.
And (3) surface coating: 80 parts of calcium carbonate, 20 parts of porcelain clay, 13 parts of butyl acrylic latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.07 part of water repellent agent, 0.5 part of lubricant, 0.06 part of defoamer, 0.12 part of caustic soda and 0.02 part of bactericide.
And finally, drying, coiling, rewinding, packaging and warehousing.
EXAMPLE six
A tobacco fiber ivory board comprises a raw paper layer, and a coating layer and a back coating layer which are respectively coated on the upper surface and the lower surface of the raw paper layer, wherein: the raw paper layer comprises a surface paper layer, a core paper layer and a bottom paper layer which are sequentially laminated from top to bottom; the coating layer comprises a top coating layer, a core coating layer and a precoating layer from top to bottom.
The preparation process of the tobacco fiber ivory board comprises the following steps:
(1) pulping process
A surface paper layer: the pulp of the surface paper layer consists of 90 percent of bleached hardwood sulfate pulp and 10 percent of bleached softwood sulfate pulp, and the pulp sheet is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
Core paper layer: the pulp of the core paper layer consists of 55 percent of bleached hardwood sulfate pulp, 5 percent of bleached softwood sulfate pulp and 40 percent of broke, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
A base paper layer: the pulp of the paper layer consists of 6 percent of tobacco fiber pulp, 64 percent of bleached hardwood sulfate pulp and 30 percent of bleached softwood sulfate pulp, the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally a paper machine is used for papermaking.
Wherein, the tobacco fiber pulp is extracted from tobacco stalk raw materials, mechanical pulp grinding is adopted, and the tobacco fiber pulp is prepared by solid-phase filter pressing, high-concentration pulp making, pulp mixing, pulp screening, net surfing molding and drying; when adding, a tobacco fiber pulp base is added into the pulp of the bottom paper layer by using a chain plate machine, and then mixed and disintegrated by a hydrapulper.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 10kg/t, and the addition amount of aluminum sulfate is 12 kg/t;
the addition amount of rosin in the slurry of the core paper layer is 9kg/t, and the addition amount of aluminum sulfate is 20 kg/t;
the addition amount of rosin in the slurry of the base paper layer is 7 kg/t; the addition amount of aluminum sulfate was 8 kg/t.
(3) Paper machine section
Screening, filtering water in the three layers of slurry respectively, and compounding the three layers of slurry;
pressing pressure: the pressure of the first press is 68kN/m, the pressure of the second press is 80kN/m, the pressure of the third press is 650kN/m, and the pressure of the fourth press is 45 kN/m.
And (3) drying: the first section of air pressure of the previous drying is 230kPa, the second section of air pressure is 120kPa, and the third section of air pressure is 90 kPa;
surface sizing: the mass concentration of the starch is 10 percent, and the application amount is 1g/m 2;
coating: front three-layer coating, precoating, core coating and surface coating;
precoat, core coat: 100 parts of calcium carbonate, 15 parts of butyl acrylic latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.35 part of water repellent agent, 0.4 part of lubricant and 0.04 part of defoaming agent.
And (3) surface coating: 80 parts of calcium carbonate, 20 parts of porcelain clay, 13 parts of butyl acrylic latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.06 part of water repellent agent, 0.5 part of lubricant, 0.06 part of defoamer, 0.12 part of caustic soda and 0.02 part of bactericide.
And finally, drying, coiling, rewinding, packaging and warehousing.
EXAMPLE seven
A tobacco fiber ivory board, comprising a raw paper layer and a coating layer coated on the upper surface of the raw paper layer, wherein: the raw paper layer comprises a surface paper layer, a lining paper layer, a core paper layer and a bottom paper layer which are sequentially laminated from top to bottom; the coating layer comprises a top coating layer, a core coating layer and a precoating layer from top to bottom.
The preparation process of the tobacco fiber ivory board comprises the following steps:
(1) pulping process
A surface paper layer: the pulp of the surface paper layer consists of 6 percent of tobacco fiber pulp, 64 percent of bleached hardwood sulfate pulp and 30 percent of bleached softwood sulfate pulp, and the pulp sheet is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
Wherein, the tobacco fiber pulp is extracted from tobacco stalk raw materials, mechanical pulp grinding is adopted, and the tobacco fiber pulp is prepared by solid-phase filter pressing, high-concentration pulp making, pulp mixing, pulp screening, net surfing molding and drying; when adding, the tobacco fiber pulp base is added into the pulp of the surface paper layer by using a chain plate machine, and then mixed and disintegrated by a hydrapulper.
A liner paper layer: the pulp of the lining paper layer consists of 100 percent bleached sulfate broad-leaf pulp, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally the paper is manufactured by a paper feeder.
Core paper layer: the pulp of the core paper layer consists of 60 percent of bleached hardwood sulfate pulp, 20 percent of bleached softwood sulfate pulp and 20 percent of broke, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is manufactured by a paper feeder.
A base paper layer: the pulp of the paper layer consists of 70 percent of bleached hardwood sulfate pulp and 30 percent of bleached softwood sulfate pulp, and the pulp board is screened, pulped and prepared after being pulped by a hydrapulper according to a certain proportion, and finally is made by a paper machine.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 8kg/t, and the addition amount of aluminum sulfate is 10 kg/t;
the addition amount of rosin in the slurry of the liner paper layer is 6.5 kg/t; the amount of aluminum sulfate added was 9 kg/t.
The addition amount of rosin in the slurry of the core paper layer is 12kg/t, and the addition amount of aluminum sulfate is 30 kg/t;
the addition amount of rosin in the slurry of the base paper layer is 6 kg/t; the addition amount of aluminum sulfate was 8 kg/t.
(3) Paper machine section
Screening, filtering water in the four layers of slurry respectively, and compounding the four layers of slurry;
pressing pressure: the pressure of the first press is 72kN/m, the pressure of the second press is 80kN/m, the pressure of the third press is 530kN/m, and the pressure of the fourth press is 80 kN/m.
And (3) drying: the first section of air pressure of the previous drying is 240kPa, the second section of air pressure is 90kPa, and the third section of air pressure is 65 kPa;
surface sizing: the mass concentration of the starch is 10 percent, and the application amount is 1.3g/m 2;
coating: front three-layer coating, precoating, core coating and surface coating;
precoat, core coat: 100 parts of calcium carbonate, 14 parts of butyl acrylic latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.35 part of water repellent agent, 0.3 part of lubricant and 0.04 part of defoaming agent.
And (3) surface coating: 80 parts of calcium carbonate, 20 parts of porcelain clay, 13 parts of butyl acrylic latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersant, 0.07 part of water repellent agent, 0.5 part of lubricant, 0.06 part of defoamer, 0.12 part of caustic soda and 0.02 part of bactericide.
And finally, drying, coiling, rewinding, packaging and warehousing.
The above seven examples, compared with the white cardboard for ordinary cigarette, have measured the paper quality index shown in table 1.
TABLE 1 quality index test results of tobacco fiber coated white cardboard samples
Figure BDA0003150080710000121
In addition, the VOC of the finished paper is measured by comparing with the white cardboard for common cigarettesSThe quality indexes of detection, smoothness and covering performance are shown in tables 2, 3 and 3.
VOC of Table 2SDetection contrast
Figure BDA0003150080710000122
Comparison of flatness of Table 3
Figure BDA0003150080710000131
Hiding Properties of Table 4
Figure BDA0003150080710000132
From the above examples and the results of the tests and comparison in the quality indexes of tables 1 to 4, it can be seen that the quality index of the tobacco fiber white cardboard prepared by the present invention is equivalent to the quality index of the normally produced coated white cardboard, and both meet the technical standard requirements. Moreover, the tobacco fiber dry pulp sheet with low water content is adopted, the problem that the tobacco fiber pulp is difficult to store and transport is solved, the storage time is prolonged, the transport cost is reduced, and the large-scale continuous production can be met. Meanwhile, the problem that the VOC of the tobacco fiber white cardboard is high is solved, and most organic volatile substances are removed from the tobacco fiber pulp through drying treatment.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, except for the cases listed in the specific embodiments; all equivalent variations of the methods and principles of the present invention are intended to be within the scope of the present invention.

Claims (10)

1. The tobacco fiber white cardboard is characterized by comprising a raw paper layer, a coating layer coated on the upper surface of the raw paper layer, or/and a back coating layer coated on the lower surface of the raw paper layer;
the raw paper layer comprises a surface paper layer, a core paper layer and a bottom paper layer which are sequentially laminated from top to bottom;
the coating layer comprises a top coating layer, a core coating layer and a precoating layer from top to bottom;
tobacco fiber pulp which accounts for 1-30% of the whole white cardboard is added into the raw paper layer according to the mass percentage;
the tobacco fiber pulp is mixed pulp, the concentration of the mixed pulp on the net is 0.4-0.9%, and the prepared quantitative amount is 60-200 g/m2And the water content is less than or equal to 25 percent.
2. The tobacco fiber white cardboard as claimed in claim 1, wherein tobacco fiber pulp accounting for 2-30% of the whole paper layer is added in the core paper layer, or \ and surface paper layer, or \ and bottom paper layer of the raw paper layer according to mass percentage.
3. The tobacco fiber ivory board as claimed in claim 1, wherein the size of the face paper layer is composed of 70-90% bleached hardwood kraft pulp and 10-30% bleached softwood kraft pulp;
the pulp of the core paper layer comprises 2-30% of tobacco fiber pulp, 20-40% of bleached hardwood sulfate pulp, 5-25% of bleached softwood sulfate pulp, 30-50% of bleached chemithermomechanical pulp and 20-40% of broken paper;
the pulp of the bottom paper layer comprises 60-90% of bleached hardwood sulfate pulp, 5-30% of bleached softwood sulfate pulp and 5-10% of unbleached softwood sulfate pulp.
4. A tobacco fibre ivory board according to claim 1, characterized in that, the basis weight is 220g/m2For example, the basis weight of the face paper layer is 30-45 g/m2The basis weight of the core paper layer is 110-130 g/m2The basis weight of the base paper layer is 30-40 g/m2。
5. A tobacco fibre ivory board according to claim 1, wherein the composition of the precoating or core coating, in parts by weight, each independently comprises: 100 parts of calcium carbonate, 11-16 parts of styrene-butadiene latex, 1.0 part of carboxymethyl cellulose, 0.1 part of dispersing agent, 0.35 part of water repellent agent, 0.3 part of lubricating agent, 0.05 part of defoaming agent, 0.1 part of foam inhibitor, 0.04 part of caustic soda and 0.02 part of bactericide.
6. A tobacco fibre ivory board according to claim 1, characterized in that the composition of the top coat comprises, in parts by weight: 70-80 parts of calcium carbonate, 20-30 parts of porcelain clay, 12-17 parts of styrene-butadiene latex, 0.2 part of carboxymethyl cellulose, 0.1 part of dispersing agent, 0.6 part of water repellent agent, 0.5 part of lubricating agent, 0.07 part of defoaming agent, 0.2 part of foam inhibitor, 0.12 part of caustic soda and 0.02 part of bactericide.
7. The tobacco fiber ivory board as claimed in claim 1, wherein the total coating weight of the coating layer is 25-42 g/m2The coating weight of the precoat layer is 10-13 g/m2The coating weight of the core coating is 5-8 g/m2The coating weight of the top coating is 8-12 g/m2。
8. The tobacco fiber ivory board as claimed in claim 1, wherein the raw paper layer further comprises a liner paper layer between the face paper layer and the core paper layer, the front surface of the raw paper layer is a four-layer fiber structure of the face paper layer and the liner paper layer for improving the front strength, the chemical pulp used for the liner paper layer is bleached sulfate broad-leaved pulp, for example, the tobacco fiber ivory board with a basis weight of 220g/m2, and the basis weight of the liner paper layer is 30-50 g/m2。
9. The tobacco fiber ivory board according to claim 1, wherein the back coating is composed of 9-13% starch glue or coating, and the coating weight of the starch glue is 1.0-2.0 g/m2Coating weight of coatingIs 6 to 11g/m2。
10. The method for preparing the tobacco fiber ivory board according to any one of claims 1 to 9, characterized by comprising the following steps:
preparing sizing agents of the surface paper layer, or \ and the liner paper layer, the core paper layer and the bottom paper layer, wherein the sizing agents of the core paper layer, or \ and the surface paper layer, or \ and the liner paper layer, or \ and the bottom paper layer are directly added with tobacco fiber sizing agent base pieces or tobacco stem sizing agents according to the proportion;
then, respectively disintegrating, mixing, pulping and filtering;
then, the surface paper layer, or/and the liner paper layer, the core paper layer and the bottom paper layer are sequentially superposed and compounded, pressed, dried and subjected to surface sizing to obtain a raw paper layer;
then sequentially coating a precoating layer, a core coating layer and a surface coating layer on the surface paper layer of the raw paper layer;
coating a back coating on the bottom surface layer of the raw paper layer, and drying;
and finally, coiling, repeating and packing to obtain the finished product of the tobacco fiber ivory board.
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Application publication date: 20210921