CN113550168B - Vaccine cold storage packaging paper and preparation method thereof - Google Patents

Vaccine cold storage packaging paper and preparation method thereof Download PDF

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Publication number
CN113550168B
CN113550168B CN202110798351.1A CN202110798351A CN113550168B CN 113550168 B CN113550168 B CN 113550168B CN 202110798351 A CN202110798351 A CN 202110798351A CN 113550168 B CN113550168 B CN 113550168B
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paper
layer
coating
paper layer
core
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CN113550168A (en
Inventor
李飞
卢诗强
王玥
马洪生
厉囡囡
杨健
张东生
聂坤
王昱玉
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Zhuhai Huafeng Paper Co ltd
Zhuhai Hongta Renheng Packaging Co ltd
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Zhuhai Huafeng Paper Co ltd
Zhuhai Hongta Renheng Packaging Co ltd
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • 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
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/62—Rosin; 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
    • D21H19/38—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
    • D21H19/46—Non-macromolecular organic 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
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/54—Starch
    • 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
    • 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
    • D21H19/80—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
    • 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
    • D21H21/36—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
    • B32B2250/26—All layers being made of paper or paperboard
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/12—Coating on the layer surface on paper 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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

Abstract

The invention provides vaccine cold storage packaging paper and a preparation method thereof, wherein the vaccine cold storage packaging paper comprises a raw paper layer, a coating layer and a back coating layer, wherein the coating layer and the back coating layer are respectively coated on the upper surface and 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 surface coating layer, a core coating layer and a precoating layer from top to bottom; rosin sizing agents for improving smoothness and strength of paper are added in the raw paper layer, and silane coupling agents/acrylate water-resistant agents for controlling Cobb values of the surfaces of different sizing layers to improve water resistance of the paper are added in the coating layers; a wet strength agent for improving the wet strength of paper under a low-temperature refrigeration condition is added into the raw paper layer, and the wet strength agent accounts for 10-18 kg of paper per ton of the whole packaging paper; has high water resistance and high humidity strength, and can still effectively keep the package integrity and the packaged vaccine performance stable under the low-temperature refrigeration/freezing and cold chain transportation environments.

Description

Vaccine cold storage packaging paper and preparation method thereof
[ technical field ] A method for producing a semiconductor device
The invention relates to a papermaking technology, in particular to vaccine cold storage packaging paper and a preparation method thereof.
[ background ] A method for producing a semiconductor device
The refrigerated medicine is short for low-temperature and refrigerated storage medicine, and the requirement of the medicine on storage and transportation temperature is very strict in the circulation process. According to the regulations under the term of drug standard "storage" in pharmacopoeia of China, drugs which need to be stored, stored and transported in cold places (the temperature is 2-10 ℃) are generally referred to, and vaccines are taken as examples, such as tetanus, diphtheria, hepatitis B, pertussis, inactivated poliovirus, neocorona vaccine and the like.
The heat preservation package is a special package form which can ensure that temperature sensitive products are always in a reasonable temperature range in all links from storage, transportation, sale and the like to consumers, protect the products from being damaged by external heat and ensure the product quality. The vaccine is used as a temperature sensitive medicine, most of the vaccine is required to be in a constant temperature environment of 2-8 ℃ in the transportation and storage processes, a small amount of the vaccine is stored in a temperature range of-20-8 ℃, and the immunogenicity of the vaccine is influenced when the refrigeration temperature is higher, so that the original effect cannot be exerted.
However, when the existing white cardboard packaging box is used for containing vaccines, due to the need of refrigeration transportation and storage, after the packaging box is stored in a low-temperature refrigeration environment for a long time, paper is easy to absorb water, and the problems of dampness, brittleness and the like are easy to occur; meanwhile, the packing box for containing the vaccine can be stained with bacteria in the long-time placing process, the bacteria breed and propagate in the packing box, cross infection can be caused on the surface of the vaccine bottle, and the insecurity of the reagent in the using process is increased. Therefore, the existing common coated white cardboard cannot meet the requirements of low-temperature refrigeration/freezing and cold chain transportation environments when being used for vaccine packaging.
[ summary of the invention ]
The invention provides vaccine cold storage packaging paper which has high water resistance and high humidity strength performance, can effectively keep complete packaging and stable packaged vaccine performance under low-temperature refrigeration/freezing and cold chain transportation environments, and a preparation method thereof, aiming at solving the problems that paper is easy to absorb water and wet under the low-temperature refrigeration environment for a long time when the existing common coated white cardboard is used for packaging vaccines.
In order to achieve the purpose of the invention, the technical scheme is as follows:
the vaccine cold storage packaging paper 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;
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;
rosin sizing agents for improving smoothness, strength and water resistance of paper are added into the raw paper layer, and the rosin sizing agents account for 20-30 kg of rosin sizing agents per ton of paper of the whole packaging paper;
the coating layer is added with a C for controlling the surface of the paper o The bb value is used for improving the water resistance of the paper, and the dosage of the silane coupling agent/acrylate water-resistant agent in one ton of paper of the whole packaging paper is 0.5-5 kg/ton of paper;
the raw paper layer is added with a wet strength agent for improving the wet strength of paper under the condition of low-temperature refrigeration, and the wet strength agent accounts for 10-18 kg of paper per ton of the whole packaging paper.
Furthermore, rosin sizing agents accounting for 6.6-10 kg/ton of paper of the whole packaging paper are respectively added into the core paper layer, the surface paper layer or the bottom paper layer of the raw paper layer, and the concentration of the rosin sizing agents is 8%.
Furthermore, a wet strength agent accounting for 2.2-10 kg of paper per ton of the whole packaging paper is respectively added into the core paper layer, or/and the surface paper layer, or/and the bottom paper layer of the raw paper layer, and the wet strength agent is polyamide epichlorohydrin.
Further, an antibacterial agent which is used for inhibiting bacteria from breeding on the surface of paper under a low-temperature condition and accounts for 3-10 kg of the consumption of each ton of paper of the whole packaging paper is added into the top coating of the coating layer, the antibacterial agent comprises nano silver or nano zinc oxide or vanillin, a dispersing agent and water, and the mass ratio of the nano silver or nano zinc oxide or vanillin, the dispersing agent and the water is 1: (3-20): (10-30);
the top coating layer, or \ and the pre-coating layer, or \ and the core coating layer of the coating layer are respectively added with a C for controlling the surface C of each paper o And the bb value is used for improving the water resistance of the paper, the dosage of the silane coupling agent/acrylate water-resistant agent in one ton of paper of the whole packaging paper is 0.5-5 kg/ton of paper, and the concentration of the silane coupling agent/acrylate water-resistant agent is 40%.
Furthermore, adhesives which prevent the paper from being brittle under the condition of low-temperature refrigeration and account for 8-15% of the respective coating layer by mass percent are added into the top coating layer, or/and the pre-coating layer, or/and the core coating layer of the coating layer, the adhesives are soybean protein modified anti-fracture acrylic styrene latexes, and the mass ratio of the soybean protein to the acrylic styrene latexes is (0.5-3.0): (8 to 12).
Further, the size composition of the surface paper layer is 100% bleached chemical pulp;
the pulp of the core paper layer consists of 50-55% of bleached chemi-mechanical pulp and 40-50% of bleached chemical pulp;
the slurry composition of the base paper layer is 100% bleached chemical pulp;
the bleaching chemical pulp is selected from one or more of sulfate softwood pulp and sulfate hardwood pulp;
the bleached chemi-mechanical pulp is selected from one or more of chemithermomechanical wood pulp and alkaline hydrogen peroxide mechanical wood pulp.
Further, the quantitative determination was made to be 300g/m 2 The vaccine cold storage packing paper is taken as an example, the ration of the surface paper layer is 35-45 g/m 2 The basis weight of the core paper layer is 200-230 g/m 2 The basis weight of the base paper layer is 36-45 g/m 2 。
Further, the top coating comprises 95% of ultrafine 98-grade GCC calcium carbonate and 5% of china clay in percentage by mass;
the solid content range of the superfine 98-grade GCC calcium carbonate is 71-73%, the particle size distribution range of less than 1 micron in the superfine 98-grade GCC calcium carbonate is 80-85%, the particle size distribution range of less than 2 microns is 96-99%, and the particle size distribution range of less than 5 microns is 100%;
the particle size distribution range of less than 2 microns in the porcelain clay is 93-100%, and the preparation concentration of the porcelain clay is 65-68%;
the core coating and the precoating layer are both prepared by adopting 50-grade GCC full calcium carbonate as pigment;
the total coating weight of the coating layer is 36-40g/m 2 The coating weight of the precoat layer is 10-14 g/m 2 The coating weight of the core coating is 10-14 g/m 2 The coating weight of the top coating is 5 to 12g/m 2 。
Furthermore, the back coating is composed of oxidized starch with the mass concentration of 2-7%, and the coating weight is 1-3 g/m 2 。
A preparation method of vaccine cold storage wrapping paper comprises the following steps:
preparing sizing agents of the surface paper layer, the core paper layer and the bottom paper layer, wherein rosin sizing agents and wet strength agents are directly added into the sizing agents of the surface paper layer, the core paper layer and the bottom paper layer according to the proportion;
then, respectively disintegrating, mixing, pulping and filtering;
then, sequentially superposing and compounding the surface paper layer, the core paper layer and the bottom paper layer, pressing, drying, applying glue on the surface, and producing a press polish to obtain a raw paper layer;
then sequentially coating a precoating layer, a core coating layer and a top coating layer on the surface paper layer of the raw paper layer, wherein the sizing agents of the top coating layer, the precoating layer and the core coating layer are directly added with adhesives according to the proportion, the sizing agent of the top coating layer is also directly added with a silane coupling agent/acrylate water repellent agent and an antibacterial agent according to the proportion, the coating amount is controlled within 36-40g/m < 2 >, the soft calendering pressure is controlled within 30-50 kN, the temperature is controlled at 120 ℃, the water content is controlled within 6.5-7.5 percent, and the paper feeding temperature is controlled within 45-50 ℃;
coating a back coating on the bottom surface layer of the raw paper layer, and drying;
and finally, coiling, rewinding and packaging to obtain the finished vaccine cold storage packaging paper.
The invention has the advantages that:
aiming at the problems that the common coated white cardboard used for the existing vaccine packaging box is easy to absorb water, wet and crisp under the long-term low-temperature refrigeration environment at minus 20 ℃ and 2-8 ℃, and the technical bottleneck that the common coated white cardboard can not be used under the low-temperature refrigeration condition, the invention adopts a specialized treatment process in the processing process of the coated paper and the coated cardboard, firstly, a silane coupling agent/acrylate water repellent agent is used in the production process of the paper, and one end of a molecule of the silane coupling agent/acrylate can be generated after hydrolysis and can be matched with celluloseSilanol of surface hydroxyl reaction, the polar hydroxyl on the surface of cellulose has been reduced simultaneously, and nonpolar groups have been brought, thereby the polarity on the surface of cellulose has been reduced, consequently, the content of hydrophilic group descends, hydrophilic ability greatly reduced, thereby lead to the water resistance of coating paper reinforcing, static contact angle to water increases, make the paper possess better water resistance, and add the rosin sizing agent in the raw paper layer, form the multilayer protective layer that has water resistance protection respectively in paper surface and inside, the Cobb value (detection condition 60 s) of coating, bottom, sandwich layer and surface course behind the detection all is less than or equal to 10g/m 2 The edge water seepage value (detection condition is 5 minutes) is less than or equal to 5mm, the paper performance can meet the use requirement of long-term cold storage below zero degree of a refrigerator, and the paper is not easy to break and explode and can keep higher strength even if being damped.
Secondly, a wet strength agent is added, so that the product has better wet strength performance; in addition, antibacterial agent is added in the production process, so that the reproductive capacity of bacteria under low temperature condition is inhibited.
In addition, the formula of the coating is optimized, and the latex with the anti-fracture and anti-explosion performance is adopted in the coating, so that the brittleness phenomenon of the paper under the low-temperature condition is improved. The prepared cold storage packaging paper has high water resistance and high humidity strength, and can still effectively keep the package integrity under the low-temperature cold storage/freezing and cold chain transportation environments, thereby effectively ensuring the stability of the performance of the packaged vaccine.
Particularly, after the vaccine cold storage packaging paper is refrigerated for one month under the conditions of low temperature and high humidity of temperature and humidity of-20 ℃ and 90% RH, the folding times, the folding strength, the wet tensile strength and the tearing strength of the vaccine cold storage packaging paper are obviously superior to those of the existing common coated white cardboard by detection and comparison, particularly, the strength index of the vaccine cold storage packaging paper is not obviously changed under the condition of refrigerating for one month at 0 ℃, and the strength index of the common coated white cardboard is obviously reduced; furthermore, the vaccine cold storage packaging paper and the common coated white cardboard are subjected to a wet tensile strength comparison test under the detection condition of 0 ℃ and 10 minutes, after the common coated white cardboard is soaked in water for 10 minutes, the surface is obviously wrinkled, the paper fiber can be easily kneaded by hands, and the vaccine cold storage packaging paper hardly changes.
[ description attached drawings ]
FIG. 1 is a schematic view of the structure of a vaccine cold-storage wrap paper prepared in example 1 of the present invention;
FIG. 2 is a graph showing the cold storage variation of longitudinal stiffness of the coated ivory board of the present invention compared with a conventional coated ivory board;
FIG. 3 is a graph showing the refrigerating change of the binding force of the coated ivory board in comparison with a conventional coated ivory board;
FIG. 4 is a graph showing the cold storage change of the tear strength of the coated ivory board of the present invention compared with a conventional coated ivory board;
fig. 5 is a graph showing a change in cold storage tensile strength in comparison with a conventional coated ivory board according to 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.
In the following examples, the bleached chemi-mechanical pulp was Venus brand kraft softwood pulp, the bleached chemi-mechanical pulp was Fengbao brand chemi-mechanical birch pulp of 400 freeness, and the silane coupling agent was vinyl tris (beta-methoxyethoxy) silane of type A-172, manufactured by GE, USA. 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 vaccine cold-storage wrapping paper, 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 vaccine cold storage packaging paper comprises the following steps:
(1) Pulping process
A surface paper layer: the pulp of the surface paper layer is composed of 100% bleaching chemical pulp, the pulp board is pulped by a hydrapulper according to a certain proportion, then screening, pulping, pulp blending and paper making are carried out finally by a paper feeder.
Core paper layer: the pulp of the core paper layer comprises 50% of bleached chemical mechanical pulp and 50% of bleached chemical 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 feeder is used for manufacturing paper.
A base paper layer: the pulp of the paper layer consists of 100% bleached chemical pulp, and the pulp board is screened, pulped, prepared and finally made by a paper machine after being pulped by a hydrapulper according to a certain proportion.
(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 the polyamide epichlorohydrin wet strength agent is 2.2kg/t;
the addition amount of rosin in the slurry of the core paper layer is 10kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 5.6kg/t;
the addition amount of rosin in the sizing agent of the base paper layer is 10kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 2.2kg/t.
Wherein the concentration of the rosin is 8 percent.
(3) Paper machine section
Screening, filtering water in the three layers of slurry respectively, and compounding the three layers of slurry;
squeezing pressure: the pressure of the first press is 55kN/m, the pressure of the second press is 90kN/m, the pressure of the third press is 750kN/m, and the pressure of the fourth press is 50kN/m.
And (3) drying: the first stage of steam pressure of the previous drying is 95kPa, the second stage of steam pressure is 195kPa, and the third stage of steam pressure is 80kPa;
surface sizing: starch mass concentration 5%, application amount 2g/m 2 ；
Soft calendering: the pressure is 20-21 kN/m and the temperature is 177 ℃.
Coating: three layers of coating are coated on the front surface, namely a precoating layer, a core coating layer and a top coating layer, the three layers of coating are coated by a three-blade coating machine, and the coating amount is controlled to be 36-40g/m 2 The soft calendering pressure is controlled at 30-50 kN, the temperature is controlled at 120 ℃, and the water content is controlled at 6.5-7.5%The paper feeding temperature is controlled to be 45-50 ℃;
precoat, core coat: the 50-grade GCC full calcium carbonate is used as pigment, and the concentration of the precoating layer and the core coating is 67 percent.
And (3) surface coating: 95 percent of superfine 98-grade GCC calcium carbonate and 5 percent of porcelain clay, wherein the concentration of a surface coating is 66 percent, the solid content range of the superfine 98-grade GCC calcium carbonate is 71 to 73 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 1 micron is 80 to 85 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 2 microns is 96 to 99 percent, and the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 5 microns is 100 percent; the distribution range of the particle size less than 2 microns in the porcelain clay is 93-100%, and the preparation concentration of the porcelain clay is 65-68%. Wherein, the surface coating is also added with a C for controlling the paper surface o bb value is used for improving water resistance of paper, and antibacterial agent is used for inhibiting bacteria from propagating on the surface of the paper at low temperature, the addition amount of the silane coupling agent is 0.5 kg/ton of paper, and the concentration of the silane coupling agent is 40%; the addition amount of the antibacterial agent is 3 kg/ton paper, the antibacterial agent comprises nano silver, a dispersing agent and water, the dispersing agent is sodium polyacrylate, and the mass ratio of the nano silver to the dispersing agent to the water is 1: 4: 12.
In addition, adhesives which can prevent the paper from being brittle under the condition of low-temperature refrigeration and account for 8% of the respective coatings in percentage by mass are added in the surface coating, the precoating and the core coating, the adhesives are soybean protein modified anti-fracture acrylic styrene latex, and the mass ratio of the soybean protein to the acrylic styrene latex is 1: 8.
Back coating, oxidized starch 100%, concentration 7%, coating weight 3g/m 2 。
And finally, drying, coiling, rewinding, packaging and warehousing.
Example two
The utility model provides a bacterin cold-stored wrapping paper, includes raw paper layer and coats with the back coating of coating layer and back coating of the upper surface of raw paper layer and lower surface respectively, 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 vaccine cold storage packaging paper comprises the following steps:
(1) Pulping process
A surface paper layer: the pulp of the surface paper layer is composed of 100% bleaching chemical pulp, the pulp board is pulped by a hydrapulper according to a certain proportion, then screening, pulping, pulp blending and paper making are carried out finally by a paper feeder.
Core paper layer: the pulp of the core paper layer consists of 55 percent of bleached chemical mechanical pulp and 45 percent of bleached chemical pulp, and the pulp sheet is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
A base paper layer: the pulp of the paper layer consists of 100% bleached chemical pulp, and the pulp board is screened, pulped, prepared and finally made by a paper machine after being pulped by a hydrapulper according to a certain proportion.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 9.1kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 2.6kg/t;
the addition amount of rosin in the slurry of the core paper layer is 9.3kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 6.8kg/t;
the addition amount of rosin in the sizing agent of the bottom paper layer is 9.1kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 2.6kg/t.
Wherein the concentration of the rosin is 8 percent.
(3) Paper machine section
The slurry in the three layers is filtered by water respectively, and then the slurry in the three layers is compounded;
squeezing pressure: the pressure of the first press is 80kN/m, the pressure of the second press is 75kN/m, the pressure of the third press is 500kN/m, and the pressure of the fourth press is 50kN/m.
And (3) drying: the first-stage steam pressure of the front drying is 350kPa, the second-stage steam pressure is 80kPa, and the third-stage steam pressure is 50kPa;
surface sizing: the mass concentration of the starch is 12 percent, and the application amount is 3g/m 2 ；
Soft calendering: the pressure is 20-21 kN/m, and the temperature is 177 ℃.
Coating: front side threeCoating with three blade coating machines, wherein the coating amount is controlled to be 36-40g/m 2 The soft calendering pressure is controlled to be 30-50 kN, the temperature is controlled to be 120 ℃, the moisture is controlled to be 6.5-7.5 percent, and the paper feeding temperature is controlled to be 45-50 ℃;
precoat, core coat: the 50-grade GCC full calcium carbonate is used as the pigment, and the concentration of the precoating layer and the core coating layer is 67 percent.
And (3) surface coating: 95 percent of superfine 98-grade GCC calcium carbonate and 5 percent of porcelain clay, wherein the concentration of a surface coating is 66 percent, the solid content range of the superfine 98-grade GCC calcium carbonate is 71 to 73 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 1 micron is 80 to 85 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 2 microns is 96 to 99 percent, and the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 5 microns is 100 percent; the distribution range of the particle size less than 2 microns in the porcelain clay is 93-100%, and the preparation concentration of the porcelain clay is 65-68%. Wherein, the surface coating is also added with a C for controlling the paper surface o bb value is used for improving water resistance of paper, and antibacterial agent is used for inhibiting bacteria from propagating on the surface of the paper at low temperature, the addition amount of the silane coupling agent is 1.2 kg/ton of paper, and the concentration of the silane coupling agent is 40%; the addition amount of the antibacterial agent is 6 kg/ton paper, the antibacterial agent comprises nano silver, a dispersing agent and water, the dispersing agent is sodium polyacrylate, and the mass ratio of the nano silver to the dispersing agent to the water is 1: 10: 20.
In addition, adhesives which prevent the paper from being brittle under the condition of low-temperature refrigeration and account for 9% of the respective coating in percentage by mass are added in the surface coating, the precoating and the core coating, the adhesives are soy protein modified anti-fracture acrylic styrene latex, and the mass ratio of the soy protein to the acrylic styrene latex is 1: 22.
Back coating, oxidized starch 100%, concentration 2%, coating weight 1.5g/m 2 。
And finally, drying, coiling, rewinding, packaging and warehousing.
EXAMPLE III
The utility model provides a bacterin cold-stored wrapping paper, includes raw paper layer and coats with the back coating of coating layer and back coating of the upper surface of raw paper layer and lower surface respectively, 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 vaccine cold storage packaging paper comprises the following steps:
(1) Pulping process
A surface paper layer: the pulp of the surface paper layer is composed of 100% bleaching chemical pulp, the pulp board is pulped by a hydrapulper according to a certain proportion, then screening, pulping, pulp blending and paper making are carried out finally by a paper feeder.
A core paper layer: the pulp of the core paper layer comprises 53% of bleached chemical mechanical pulp and 47% of bleached chemical pulp, and the pulp sheet is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
A base paper layer: the pulp of the paper layer is 100% bleaching chemical pulp, the pulp board is screened, pulped and prepared by a hydrapulper according to a certain proportion, and finally a paper machine is used for papermaking.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 8.3kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 3.1kg/t;
the addition amount of rosin in the slurry of the core paper layer is 8.4kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 7.8kg/t;
the addition amount of rosin in the sizing agent of the bottom paper layer is 8.3kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 3.1kg/t.
Wherein the concentration of the rosin is 8 percent.
(3) Paper machine section
The slurry in the three layers is filtered by water respectively, and then the slurry in the three layers is compounded;
squeezing 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 650kN/m, and the pressure of the fourth press is 45kN/m.
And (3) drying: the first-stage steam pressure of the previous drying is 180kPa, the second-stage steam pressure is 135kPa, and the third-stage steam pressure is 50kPa;
surface sizing: the mass concentration of the starch is 10 percent, and the application amount is 2.5g/m 2 ；
Soft calendering: the pressure is 20-21 kN/m and the temperature is 177 ℃.
Coating: three layers of coating are coated on the front surface, namely a precoating layer, a core coating layer and a top coating layer, the three layers of coating are coated by a three-blade coating machine, and the coating amount is controlled to be 36-40g/m 2 The soft calendering pressure is controlled at 30-50 kN, the temperature is controlled at 120 ℃, the moisture is controlled at 6.5-7.5 percent, and the paper feeding temperature is controlled at 45-50 ℃;
precoat, core coat: the 50-grade GCC full calcium carbonate is used as pigment, and the concentration of the precoating layer and the core coating is 67 percent.
And (3) surface coating: 95 percent of superfine 98-grade GCC calcium carbonate and 5 percent of porcelain clay, wherein the concentration of a surface coating is 66 percent, the solid content range of the superfine 98-grade GCC calcium carbonate is 71 to 73 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 1 micron is 80 to 85 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 2 microns is 96 to 99 percent, and the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 5 microns is 100 percent; the distribution range of the particle size less than 2 microns in the porcelain clay is 93-100%, and the preparation concentration of the porcelain clay is 65-68%. Wherein, the top coating is also added with a silane coupling agent for controlling the Cobb value of the surface of the paper to improve the water resistance of the paper and an antibacterial agent for inhibiting bacteria from breeding on the surface of the paper under the low temperature condition, the adding amount of the silane coupling agent is 2.5 kg/ton of paper, and the concentration of the silane coupling agent is 40 percent; the addition amount of the antibacterial agent is 8 kg/ton paper, the antibacterial agent comprises nano silver, a dispersing agent and water, the dispersing agent is sodium polyacrylate, and the mass ratio of the nano silver to the dispersing agent to the water is 1: 15: 30.
In addition, adhesives which can prevent the paper from being brittle under the condition of low-temperature refrigeration and account for 11% of the respective coatings in percentage by mass are added in the surface coating, the precoating and the core coating, the adhesives are soybean protein modified anti-fracture acrylic styrene latex, and the mass ratio of the soybean protein to the acrylic styrene latex is 1: 4.
Back coating, oxidized starch 100%, concentration 5%, coating weight 1.3g/m 2 。
And finally, drying, coiling, rewinding, packaging and warehousing.
Example four
The vaccine cold storage packaging paper 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 vaccine cold storage packaging paper comprises the following steps:
(1) Pulping process
A surface paper layer: the pulp of the surface paper layer is composed of 100% bleaching chemical pulp, the pulp board is pulped by a hydrapulper according to a certain proportion, then screening, pulping, pulp blending and paper making are carried out finally by a paper feeder.
Core paper layer: the pulp of the core paper layer consists of 55 percent of bleached chemical mechanical pulp and 45 percent of bleached chemical pulp, and the pulp sheet is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
A base paper layer: the pulp of the paper layer is 100% bleaching chemical pulp, the pulp board is screened, pulped and prepared by a hydrapulper according to a certain proportion, and finally a paper machine is used for papermaking.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 7.5kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 3.6kg/t;
the addition amount of rosin in the slurry of the core paper layer is 7.5kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 8.8kg/t;
the addition amount of rosin in the sizing agent of the bottom paper layer is 7.5kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 3.6kg/t.
Wherein the concentration of the rosin is 8 percent.
(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 70kN/m, the pressure of the second press was 85kN/m, the pressure of the third press was 700kN/m and the pressure of the fourth press was 40kN/m.
And (3) drying: the first-stage steam pressure of the previous drying is 200kPa, the second-stage steam pressure is 150kPa, and the third-stage steam pressure is 100kPa;
surface sizing: the mass concentration of the starch is 8 percent, and the application amount is 2.8g/m 2 ；
Soft calendering: the pressure is 20-21 kN/m and the temperature is 177 ℃.
Coating: three layers of coating are coated on the front surface, namely a precoating layer, a core coating layer and a top coating layer, the three layers of coating are coated by a three-blade coating machine, and the coating amount is controlled to be 36-40g/m 2 The soft calendering pressure is controlled at 30-50 kN, the temperature is controlled at 120 ℃, the moisture is controlled at 6.5-7.5 percent, and the paper feeding temperature is controlled at 45-50 ℃;
precoat, core coat: the 50-grade GCC full calcium carbonate is used as the pigment, and the concentration of the precoating layer and the core coating layer is 67 percent.
And (3) surface coating: 95% of superfine 98-grade GCC calcium carbonate and 5% of porcelain clay, wherein the concentration of a surface coating is 66%, the solid content range of the superfine 98-grade GCC calcium carbonate is 71-73%, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 1 micrometer is 80-85%, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 2 micrometers is 96-99%, and the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 5 micrometers is 100%; the distribution range of the particle size less than 2 microns in the porcelain clay is 93-100%, and the preparation concentration of the porcelain clay is 65-68%. Wherein, the top coating is also added with a silane coupling agent for controlling the Cobb value of the surface of the paper to improve the water resistance of the paper and an antibacterial agent for inhibiting bacteria from breeding on the surface of the paper under the low temperature condition, the adding amount of the silane coupling agent is 3.2 kg/ton of paper, and the concentration of the silane coupling agent is 40 percent; the addition amount of the antibacterial agent is 9 kg/ton paper, the antibacterial agent comprises nano silver, a dispersing agent and water, the dispersing agent is sodium polyacrylate, and the mass ratio of the nano silver to the dispersing agent to the water is 1: 15: 30.
In addition, adhesives which can prevent the paper from being brittle under the condition of low-temperature refrigeration and account for 12% of the respective coating by mass percent are added in the surface coating, the precoating and the core coating, the adhesives are soybean protein modified anti-fracture acrylic styrene latex, and the mass ratio of the soybean protein to the acrylic styrene latex is 1: 4.
Back coating, oxidized starch 100%, concentration 6%, coating weight 1.5g/m 2 。
And finally, drying, coiling, rewinding, packaging and warehousing.
EXAMPLE five
The utility model provides a bacterin cold-stored wrapping paper, includes raw paper layer and coats with the back coating of coating layer and back coating of the upper surface of raw paper layer and lower surface respectively, 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 vaccine cold storage packaging paper comprises the following steps:
(1) Pulping process
A surface paper layer: the pulp of the surface paper layer is composed of 100% bleaching chemical pulp, the pulp board is pulped by a hydrapulper according to a certain proportion, then screening, pulping, pulp blending and paper making are carried out finally by a paper feeder.
A core paper layer: the pulp of the core paper layer comprises 54% of bleached chemical mechanical pulp and 46% of bleached chemical pulp, and the pulp sheet is screened, pulped, prepared and finally manufactured by a paper feeder after being pulped by a hydrapulper according to a certain proportion.
A base paper layer: the pulp of the paper layer is 100% bleaching chemical pulp, the pulp board is screened, pulped and prepared by a hydrapulper according to a certain proportion, and finally a paper machine is used for papermaking.
(2) Wet end chemistry
The addition amount of rosin in the sizing agent of the surface paper layer is 6.6kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 4kg/t;
the addition amount of rosin in the slurry of the core paper layer is 6.8kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 10kg/t;
the addition amount of rosin in the sizing agent of the base paper layer is 6.63kg/t, and the addition amount of the polyamide epichlorohydrin wet strength agent is 4kg/t.
Wherein the concentration of the rosin is 8 percent.
(3) Paper machine section
The slurry in the three layers is filtered by water respectively, and then the slurry in the three layers is compounded;
pressing pressure: the pressure of the first press is 65kN/m, the pressure of the second press is 80kN/m, the pressure of the third press is 500kN/m, and the pressure of the fourth press is 50kN/m.
And (3) drying: the first-stage steam pressure of the previous drying is 150kPa, the second-stage steam pressure is 100kPa, and the third-stage steam pressure is 50kPa;
surface sizing: starch mass concentration 10%, application amount 1.5g/m 2 ；
Soft calendering: the pressure is 20-21 kN/m and the temperature is 177 ℃.
Coating: three layers of coating are coated on the front surface, namely a precoating layer, a core coating layer and a top coating layer, the three layers of coating are coated by a three-blade coating machine, and the coating amount is controlled to be 36-40g/m 2 The soft calendering pressure is controlled at 30-50 kN, the temperature is controlled at 120 ℃, the moisture is controlled at 6.5-7.5 percent, and the paper feeding temperature is controlled at 45-50 ℃;
precoat, core coat: the 50-grade GCC full calcium carbonate is used as the pigment, and the concentration of the precoating layer and the core coating layer is 67 percent.
And (3) surface coating: 95 percent of superfine 98-grade GCC calcium carbonate and 5 percent of porcelain clay, wherein the concentration of a surface coating is 66 percent, the solid content range of the superfine 98-grade GCC calcium carbonate is 71 to 73 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 1 micron is 80 to 85 percent, the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 2 microns is 96 to 99 percent, and the particle size distribution range of the superfine 98-grade GCC calcium carbonate smaller than 5 microns is 100 percent; the distribution range of the particle size less than 2 microns in the porcelain clay is 93-100%, and the preparation concentration of the porcelain clay is 65-68%. Wherein, the top coating is also added with a silane coupling agent for controlling the Cobb value of the surface of the paper to improve the water resistance of the paper and an antibacterial agent for inhibiting bacteria from breeding on the surface of the paper under the low temperature condition, the adding amount of the silane coupling agent is 5 kg/ton of paper, and the concentration of the silane coupling agent is 40 percent; the addition amount of the antibacterial agent is 10 kg/ton paper, the antibacterial agent comprises nano silver, a dispersing agent and water, the dispersing agent is sodium polyacrylate, and the mass ratio of the nano silver to the dispersing agent to the water is 1: 20: 30.
In addition, adhesives which prevent the paper from being brittle under the condition of low-temperature refrigeration and account for 15% of the respective coating in percentage by mass are added in the surface coating, the precoating and the core coating, the adhesives are soy protein modified anti-fracture acrylic styrene latex, and the mass ratio of the soy protein to the acrylic styrene latex is 1: 20.
Back coating, oxidized starch 100%, concentration 6%, coating weight 1.5g/m 2 。
And finally, drying, coiling, rewinding, packaging and warehousing.
The above five examples, compared with the common coated white cardboard, measure the paper quality index and see table 1.
TABLE 1 quality index test results of vaccine cold-storage packaging paper samples
Figure BDA0003163126190000161
Figure BDA0003163126190000171
And the standard standards of the vaccine cold storage packaging paper made according to ISO, TAPPI and GB/T standards are shown in Table 2
TABLE 2
Figure BDA0003163126190000181
From the above examples and the comparison results of the quality index detection results in table 1 and table 2, aiming at the problems that the paper of the common coated white cardboard is easy to absorb water, wet and crisp under the long-term low-temperature refrigeration environments of-20 ℃ and 2-8 ℃, the Cobb values (detection condition 60 s) of the bottom layer, the core layer and the surface layer of the vaccine refrigeration packaging paper prepared by the invention are all less than or equal to 10g/m 2 The edge water seepage value (detection condition for 5 minutes) is less than or equal to 5mm, the paper performance can meet the use requirement of long-term refrigeration storage below zero degree of a refrigerator, and the paper is not easy to break and explode and can keep higher strength even if being affected with damp. Especially refrigerating at low temperature and high humidity of-20 deg.C and 90% RH for one monthAnd then, compared with detection and comparison, the folding times, the folding strength, the wet tensile strength and the tearing strength of the vaccine cold storage packaging paper are obviously superior to those of the existing common coated white cardboard.
Furthermore, as shown in FIGS. 2 to 5, the quantitative ratio was set to 300g/m 2 Compared with the common coated white cardboard, the vaccine cold storage packaging paper has no obvious change in the paper strength index and the strength index of the common coated white cardboard is obviously reduced by comparing the longitudinal stiffness cold storage change curve, the binding force cold storage change curve, the tearing strength cold storage change curve and the tensile strength cold storage change curve corresponding to the vaccine cold storage packaging paper and the common coated white cardboard under the condition of cold storage for one month at 0 ℃. In addition, the vaccine cold storage packaging paper and the common coated white cardboard are subjected to a wet tensile strength comparison test under the detection condition of 0 ℃ and 10 minutes, after the common coated white cardboard is soaked in water for 10 minutes, the surface is obviously wrinkled, paper fibers can be easily kneaded by hands, and the vaccine cold storage packaging paper hardly changes.
The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention, 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 (9)

1. The vaccine cold storage packaging paper is characterized by comprising a raw paper layer, a coating layer and a back coating layer, wherein the coating layer and the back coating layer are respectively coated on the upper surface and 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;
rosin sizing agents for improving smoothness, strength and water resistance of paper are added into the raw paper layer, and the rosin sizing agents account for 20-30kg per ton of paper of the whole packaging paper;
the coating layer is added with a silane coupling agent/acrylate water repellent agent for controlling a Cobb value of the surface of the paper to improve the water resistance of the paper, and the silane coupling agent/acrylate water repellent agent accounts for 0.5 to 5 kg/ton of paper of the whole packaging paper;
a wet strength agent for improving the wet strength of paper under a low-temperature refrigeration condition is added into the raw paper layer, and the wet strength agent accounts for 10-18kg/ton of paper of the whole packaging paper;
adhesives which prevent the paper from being brittle under the condition of low-temperature refrigeration and account for 8-15% of the respective coating by mass percent are respectively added into the top coating, or/and the pre-coating, or/and the core coating of the coating, the adhesives are soybean protein modified anti-fracture acrylic styrene latex, and the mass ratio of the soybean protein to the acrylic styrene latex is (0.5-3.0): (8 to 12);
the slurry of the surface paper layer is 100% of bleached chemical pulp; the slurry of the core paper layer comprises 50 to 55 percent of bleaching chemical mechanical slurry and 40 to 50 percent of bleaching chemical slurry; the slurry composition of the base paper layer is 100% bleached chemical pulp.
2. The vaccine cold storage packaging paper as claimed in claim 1, wherein a rosin sizing agent accounting for 6.6 to 10kg/ton of paper is added to the core paper layer, or/and the top paper layer, or/and the bottom paper layer of the raw paper layer respectively, and the concentration of the rosin sizing agent is 8%.
3. The vaccine cold storage packaging paper of claim 1, wherein a wet strength agent accounting for 2.2 to 10kg of paper per ton of the whole packaging paper is added to the core paper layer, or/and the surface paper layer, or/and the bottom paper layer of the raw paper layer respectively, and the wet strength agent is polyamide epichlorohydrin.
4. The vaccine cold storage packaging paper as claimed in claim 1, wherein an antibacterial agent for inhibiting bacteria from propagating on the surface of the paper under low temperature conditions and accounting for 3 to 10kg/ton of paper in each ton of the whole packaging paper is added into the top coating layer of the coating layer, the antibacterial agent comprises nano silver or nano zinc oxide or vanillin, a dispersing agent and water, and the mass ratio of the nano silver or nano zinc oxide or vanillin, the dispersing agent and the water is 1: (3 to 20): (10 to 30);
silane coupling agents/acrylate water-resistant agents for controlling the Cobb value of the surface of each paper to improve the water resistance of the paper are added in the top coating layer, or/and the pre-coating layer, or/and the core coating layer of the coating layer respectively, the usage amount of the silane coupling agents/acrylate water-resistant agents in each ton of paper of the whole packaging paper is 0.5-5 kg/ton of paper, and the concentration of the silane coupling agents/acrylate water-resistant agents is 40%.
5. The vaccine cold storage packaging paper as claimed in claim 1, wherein the bleached chemical pulp is selected from one or more of sulfate softwood pulp, sulfate hardwood pulp;
the bleached chemi-mechanical pulp is selected from one or more of chemithermomechanical pulp and alkaline hydrogen peroxide mechanical groundwood pulp.
6. The vaccine cold storage wrapping paper according to claim 1, characterized in that when the basis weight of the vaccine cold storage wrapping paper is 300g/m, the basis weight of the surface paper layer is 35 to 45g/m, the basis weight of the core paper layer is 200 to 230g/m, and the basis weight of the ground paper layer is 36 to 45g/m.
7. The vaccine refrigeration packaging paper as claimed in claim 1, wherein the top coating comprises 95% of superfine 98-grade GCC calcium carbonate and 5% of china clay in percentage by mass;
the solid content range of the superfine 98-grade GCC calcium carbonate is 71 to 73 percent, the particle size distribution range of less than 1 micrometer in the superfine 98-grade GCC calcium carbonate is 80 to 85 percent, the particle size distribution range of less than 2 micrometers is 96 to 99 percent, and the particle size distribution range of less than 5 micrometers is 100 percent;
the distribution range of the particle size of less than 2 microns in the porcelain clay is 93-100%, and the preparation concentration of the porcelain clay is 65-68%;
the core coating and the precoating layer are both prepared by adopting 50-grade GCC full calcium carbonate as pigment;
the total coating weight of the coating layers is 36 to 40g/m, the coating weight of the pre-coating layer is 10 to 14g/m, the coating weight of the core coating layer is 10 to 14g/m, and the coating weight of the top coating layer is 5 to 12g/m.
8. Vaccine cold-storage packaging paper according to claim 1, wherein the composition of the back coating is oxidized starch with mass concentration of 2-7%, and the coating weight is 1-3 g/m.
9. The preparation method of the vaccine cold storage packaging paper according to any one of claims 1 to 8, characterized by comprising the following steps:
preparing sizing agents of the surface paper layer, the core paper layer and the bottom paper layer, wherein rosin sizing agents and wet strength agents are directly added into the sizing agents of the surface paper layer, the core paper layer and the bottom paper layer according to the proportion;
then, respectively disintegrating, mixing, pulping and filtering;
then, sequentially superposing and compounding the surface paper layer, the core paper layer and the bottom paper layer, pressing, drying, applying glue on the surface, and producing a press polish to obtain a raw paper layer;
sequentially coating a precoating layer, a core coating layer and a top coating layer on a surface paper layer of the raw paper layer, wherein an adhesive is directly added into slurry of the top coating layer, the precoating layer and the core coating layer according to a ratio, a silane coupling agent/acrylate water repellent agent and an antibacterial agent are also directly added into slurry of the top coating layer according to a ratio, the coating amount is controlled within 36-40g/m & lt 2 & gt through a three-scraper coating machine, the soft calendering pressure is controlled within 30-50kN, the temperature is controlled at 120 ℃, the water content is controlled within 6.5-7.5%, and the paper discharging temperature is controlled within 45-50 ℃;
coating a back coating on the bottom surface layer of the raw paper layer, and drying;
and finally, coiling, rewinding and packaging to obtain the finished vaccine cold storage packaging paper.
CN202110798351.1A 2021-07-14 2021-07-14 Vaccine cold storage packaging paper and preparation method thereof Active CN113550168B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004204385A (en) * 2002-12-25 2004-07-22 Daio Paper Corp Waterproof liner
WO2012130908A1 (en) * 2011-03-29 2012-10-04 Hamburger Rieger Gmbh & Co. Kg Device and method for producing a multi-layer packaging paper
CN103757980A (en) * 2014-01-03 2014-04-30 金华盛纸业（苏州工业园区）有限公司 Latex for papermaking, preparation method and coating containing latex for papermaking
CN104562856A (en) * 2015-01-14 2015-04-29 珠海经济特区红塔仁恒纸业有限公司 Coated white cardboard for heat seal as well as production and processing method and packaging paper
CN108912912A (en) * 2018-06-15 2018-11-30 安徽艾米伦特建材科技有限公司 Acrylate waterproof paint and preparation method thereof
CN112064404A (en) * 2020-08-28 2020-12-11 珠海红塔仁恒包装股份有限公司 Liquid packaging paper for high-speed two-dimensional code online jet printing and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004204385A (en) * 2002-12-25 2004-07-22 Daio Paper Corp Waterproof liner
WO2012130908A1 (en) * 2011-03-29 2012-10-04 Hamburger Rieger Gmbh & Co. Kg Device and method for producing a multi-layer packaging paper
CN103757980A (en) * 2014-01-03 2014-04-30 金华盛纸业（苏州工业园区）有限公司 Latex for papermaking, preparation method and coating containing latex for papermaking
CN104562856A (en) * 2015-01-14 2015-04-29 珠海经济特区红塔仁恒纸业有限公司 Coated white cardboard for heat seal as well as production and processing method and packaging paper
CN108912912A (en) * 2018-06-15 2018-11-30 安徽艾米伦特建材科技有限公司 Acrylate waterproof paint and preparation method thereof
CN112064404A (en) * 2020-08-28 2020-12-11 珠海红塔仁恒包装股份有限公司 Liquid packaging paper for high-speed two-dimensional code online jet printing and preparation method thereof

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