CN114808549A - Flame-retardant waterproof carton and preparation method thereof - Google Patents

Flame-retardant waterproof carton and preparation method thereof Download PDF

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Publication number
CN114808549A
CN114808549A CN202210427809.7A CN202210427809A CN114808549A CN 114808549 A CN114808549 A CN 114808549A CN 202210427809 A CN202210427809 A CN 202210427809A CN 114808549 A CN114808549 A CN 114808549A
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China
Prior art keywords
layer
flame
retardant
waterproof
carton
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CN202210427809.7A
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Chinese (zh)
Inventor
肖洪燕
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Wuxi Yaocheng Paper Products Co ltd
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Wuxi Yaocheng Paper Products Co ltd
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Priority to CN202210427809.7A priority Critical patent/CN114808549A/en
Publication of CN114808549A publication Critical patent/CN114808549A/en
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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
    • D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F5/00—Attaching together sheets, strips or webs; Reinforcing edges
    • B31F5/04—Attaching together sheets, strips or webs; Reinforcing edges by exclusive use of adhesives
    • 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
    • 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
    • B32B29/08—Corrugated paper or cardboard
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • 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
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/22—Polyalkenes, e.g. polystyrene
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—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
    • D21H19/44—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
    • D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than 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
    • D21H19/64—Inorganic compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H21/34—Ignifugeants
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • 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
    • B32B2255/26—Polymeric 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides a flame-retardant waterproof carton and a preparation method thereof, wherein the flame-retardant waterproof carton is composed of flame-retardant waterproof paperboards; the flame-retardant waterproof paperboard is sequentially provided with a first hard paperboard layer, a honeycomb layer, a middle layer, a corrugated layer and a second hard paperboard from top to bottom; the upper surface and the lower surface of the first hard paperboard layer are respectively provided with a waterproof layer and a flame-retardant coating; the upper surface and the lower surface of the second hard paperboard layer are respectively provided with a flame-retardant coating and a waterproof layer; the honeycomb side length of the honeycomb layer is 4-12 mm; the corrugated paper wave form of flute layer is the U type. The flame-retardant waterproof carton can effectively enable the carton to have good flame retardance and water resistance, and avoids hidden troubles of carton quality caused by water immersion in the stacking and transporting process of the carton; the hidden fire-fighting danger of the carton under the condition of large-scale stacking can be avoided.

Description

Flame-retardant waterproof carton and preparation method thereof
Technical Field
The invention relates to the technical field of carton correlation, in particular to a flame-retardant waterproof carton and a preparation method thereof.
Background
The carton is generally used as a wrapper or article-protecting outer layer for goods, and the volume of the carton can be changed according to the size of the goods. The carton bears the important responsibility of containing, protecting and beautifying the product, and is widely applied to the fields of food, logistics express delivery, product packaging, equipment and facilities, electronic products and the like.
The following problem exists in the carton among the prior art:
1. the carton receives the extrusion of external force easily to produce deformation in the transit, influences the integrality of the inside article of carton.
2. The carton is because the material is vegetable fibre, in transportation, storage process, piles up in a large number, has great fire control hidden danger.
3. The carton is because the material is vegetable fibre, and the storage makes the inside soaking of carton easily under the condition that the rainwater drenched in humid environment or on the way in the transportation, leads to the carton damaged, influences product quality.
Disclosure of Invention
The invention provides a flame-retardant waterproof carton and a preparation method thereof, aiming at solving the problems in the prior art, the invention can effectively prevent the carton from soaking in water during storage and transportation in a humid environment, can also effectively avoid the fire-fighting problem caused by a large number of stacked cartons in a high-temperature environment, and enables the carton to have more excellent pressure resistance by adding a honeycomb layer.
In order to achieve the purpose, the invention provides the following technical scheme: a flame-retardant waterproof carton is composed of a flame-retardant waterproof paperboard; the flame-retardant waterproof paperboard is sequentially provided with a first hard paperboard layer, a honeycomb layer, a middle layer, a corrugated layer and a second hard paperboard from top to bottom; the upper surface and the lower surface of the first hard paperboard layer are respectively provided with a waterproof layer and a flame-retardant coating; the upper surface and the lower surface of the second hard paperboard layer are respectively provided with a flame-retardant coating and a waterproof layer; the honeycomb side length of the honeycomb layer is 4-12 mm; the corrugated paper wave form of flute layer is the U type.
The corrugated paper has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, convenient storage and transportation and the like; the corrugated paper with the U-shaped waveform has excellent gluing area, so that the corrugated paper is bonded more firmly and has certain plane elasticity. But the plane compressive capacity of U type corrugated paper is relatively poor, consequently adds the plane compressive capacity that the honeycomb layer improved the carton, avoids in transit because of the carton in a large number with shake, lead to the carton to sink.
The preferable technical scheme is as follows: the thickness ratio of the first hard paperboard layer to the honeycomb layer to the middle layer to the corrugated layer to the second hard paperboard layer is 2:4:1:4: 2.
The preferable technical scheme is as follows: the waterproof layers on the surfaces of the first cardboard layer and the second cardboard layer are high-density polyethylene coating films.
The high density polyethylene coating film has a melting point as high as 110 ℃, has good wear resistance and water resistance, can meet the waterproof requirement that the carton is rained in a humid environment and in the transportation way, and effectively avoids the carton from being damaged due to soaking, so that the carton has hidden quality troubles.
The preferable technical scheme is as follows: the flame-retardant coating on the surfaces of the first cardboard layer and the second cardboard layer comprises the following components in parts by weight: 2-5 parts of carboxymethyl cellulose, 4-10 parts of antimony trioxide, 3-8 parts of aluminum hydroxide, 2-6 parts of magnesium hydroxide, 1-3 parts of aluminum hypophosphite and 6-12 parts of ABS resin.
The carboxymethyl cellulose is natural cellulose with the widest distribution and more content, has excellent bonding, thickening and colloid protection capabilities, and can keep good bonding effect and coating stability between the flame-retardant coating and the hard board.
Antimony trioxide belongs to an additive flame retardant, and is often used together with other flame retardants and smoke suppressants, and a synergistic effect can be generated among the components. Antimony trioxide melts first at the beginning of combustion to form a protective film on the surface of the material to isolate air, and the combustion temperature is reduced through an internal endothermic reaction. The antimony trioxide is gasified at high temperature to dilute the oxygen concentration in the air, thereby playing a role in flame retardance. However, antimony trioxide has a certain toxicity and thus cannot be used alone.
Aluminum hydroxide is the largest and most widely used inorganic flame retardant additive. The aluminum hydroxide serving as a flame retardant can not only resist flame, but also prevent fuming, does not produce drippings and does not produce toxic gas. The combination with antimony trioxide can avoid the problem that the smoke toxicity is high when the flame retardance is caused by the excessive content of antimony trioxide.
The magnesium hydroxide has excellent buffering performance, reaction activity, adsorbability, thermal decomposition performance and the like, can be used as a chemical material and an intermediate, and is a green environment-friendly flame retardant and an additive used in the industries of high polymer materials such as rubber, plastics, fibers, resin and the like. The flame-retardant coating is mixed with antimony trioxide and aluminum hydroxide, so that the flame-retardant effect of the flame-retardant coating can be obviously improved.
The aluminum hypophosphite is a phosphorus inorganic salt, is relatively stable at normal temperature, has good processing thermal stability, but can be decomposed at high temperature to generate toxic phosphine gas, so the aluminum hypophosphite is often used as a synergist to be used together with other flame retardants, can be cooperated and complemented with other flame retardants, and effectively improves the flame retardant effect.
The ABS resin is yellowish solid, has certain toughness and has a density of about 1.04-1.06 g/cm 3. The flame-retardant coating has strong acid, alkali and salt corrosion resistance, good impact resistance, heat resistance and adhesiveness, and can keep good adhesion effect and coating stability between the flame-retardant coating and a hardboard.
A preparation method of a flame-retardant waterproof carton comprises the following steps:
the method comprises the following steps: waterproof treatment of the first and second cardboard layers;
carrying out surface treatment on one side of a hardboard; after the surface treatment of the hardboard is finished, the hardboard is subjected to primary coating by using coating oil, and the primary coating is dried after the primary coating is finished; finally, carrying out surface coating and film plating on the high-density polyethylene on the hard board by a vacuum film plating technology, and drying the surface coating and film plating to obtain a waterproof layer;
the surface treatment of the hardboard can prevent the surface of the hardboard from being incapable of effectively adhering to the waterproof layer due to dust and dirt. The spraying coating oil can ensure that the surface of the hardboard has a good coating foundation, and a fiber layer on the surface of the hardboard is avoided, so that the waterproof layer can not be effectively attached to the surface of the hardboard.
Step two: flame retardant treatment of the first and second cardboard layers;
mixing the flame-retardant coating materials according to a certain proportion, and adding deionized water for heating and stirring to fully mix the materials; centrifuging the mixture by a centrifuge, and removing excessive water; uniformly coating the centrifuged mixture on the other side of the cardboard corresponding to the waterproof layer, and drying the cardboard to obtain the flame-retardant coating;
the centrifugal machine can enable the fully mixed flame-retardant material to remove redundant moisture, effectively reduces the drying time and increases the processing efficiency of the flame-retardant coating.
Step three: bonding the paperboards;
bonding the first hard paperboard layer, the honeycomb layer, the middle layer, the corrugated layer and the second hard paperboard layer by an adhesive in sequence to obtain the flame-retardant waterproof paperboard, wherein the waterproof layer is positioned on the outer side of the flame-retardant waterproof paperboard;
step four: manufacturing a carton;
and (3) performing die cutting, indentation and carton nailing/gluing on the flame-retardant waterproof paperboard to obtain the flame-retardant waterproof carton.
The preferable technical scheme is as follows: the drying treatment time of the base coat in the first step is 1.5-2h, and the drying temperature is 60-70 ℃; the drying temperature of the top coat is 50-60 ℃, and the drying time is 1-2 h.
The temperature and the time of the primary coating drying can enable the coating oil to quickly permeate into the surface of the hard board, so that the fiber smoothness of the surface of the hard board can meet the requirement of coating, and the phenomenon that after coating, the adhesion between the waterproof layer and the hard board is low and the waterproof layer is easy to fall off is avoided.
The stoving temperature and the time of top coat can let the hardboard surface soften under the influence of temperature after accomplishing the coating film for polyethylene coating film and hardboard surface are more laminated, and the inside moisture that exists of drying coating film, make the polyethylene coating film harden, increase the wearability of waterproof layer.
The preferable technical scheme is as follows: and the part of the deionized water in the second step is 27-66 parts.
As the deionized water for effectively removing internal impurities, the flame-retardant coating can be prevented from increasing impurities and reducing the flame-retardant effect when the flame-retardant material is mixed and stirred. The part of the deionized water is 1.5 times of the used part of the flame retardant material, so that the flame retardant material has sufficient dissolution medium and performance protection during heating, and the property change of the flame retardant material caused by insufficient dissolution and heating of the flame retardant material is avoided.
The preferable technical scheme is as follows: the heating and stirring time in the second step is 20-35min, the stirring speed is 120-320R/min, and the heating temperature is 65-85 ℃; the drying temperature is 80-90 ℃, and the drying time is 1.5-2 h.
The time and the speed of mixing stirring can make each flame retardant material can be fast and abundant mix, and the heating temperature during the stirring can make flame retardant material melt under stable circumstances for each flame retardant material can accomplish the cooperation and complement, and reduce flame retardant material's partial harmful effects.
The stoving temperature and the time of fire-retardant coating can let fire-retardant coating under the stable condition of fire behaviour, dry unnecessary moisture to make fire-retardant coating and the inseparabler laminating of hardboard, avoid droing of fire-retardant coating, lead to the carton to have the quality problems.
The preferable technical scheme is as follows: the thickness of the waterproof layer is 0.2-0.6mm, and the thickness of the flame retardant layer is 0.8-1.3 mm.
The thicker waterproof layer can increase the cost, the thinner waterproof layer can lead to the unexpected waterproof effect and easily lead to the abrasion of the coated film of the waterproof layer, so that the thickness of the waterproof layer is 0.3-0.6mm, and the waterproof effect and the wear-resistant effect can be ensured under the condition of not influencing the cost and the performance of the carton.
The thickness of the flame-retardant layer is thicker, which leads to the increase of the cost of the carton, and the thinness of the flame-retardant layer leads to the reduction of the flame-retardant effect of the carton. Therefore, the thickness of the flame-retardant layer is 0.8-1.3mm, and the excellent flame-retardant effect of the carton can be ensured.
The preferable technical scheme is as follows: the flame-retardant coating in the second step consists of the following components in parts by weight: 2-5 parts of carboxymethyl cellulose, 4-10 parts of antimony trioxide, 3-8 parts of aluminum hydroxide, 2-6 parts of magnesium hydroxide, 1-3 parts of aluminum hypophosphite and 6-12 parts of ABS resin.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, by arranging the waterproof layer, the carton can effectively avoid the hidden danger of carton quality caused by water immersion in the storage and transportation processes.
2. According to the invention, the flame-retardant layer is arranged, so that the carton has good flame-retardant property, and fire-fighting hidden danger caused by a large amount of stacked cartons in a dry environment is avoided.
3. According to the invention, through the arrangement of the honeycomb layer, the compression resistance of the carton is effectively increased under the condition that the original strength of the carton is not influenced, the deformation caused by overlarge pressure in the transportation process and the condition of large stacking of the carton is avoided, the attractiveness of a product is influenced, and articles in the carton are collided or damaged.
Drawings
Fig. 1 is a schematic flow chart of a method for manufacturing a flame-retardant waterproof carton according to the invention.
Fig. 2 is a schematic structural view of a flame-retardant waterproof paperboard of a flame-retardant waterproof carton according to the invention.
The corrugated board comprises a first hard paperboard layer 1, a honeycomb layer 2, a middle layer 3, a corrugated layer 4, a second hard paperboard layer 5, a waterproof layer 6 and a flame-retardant coating 7.
Detailed Description
An embodiment of a flame retardant waterproof carton and a method for manufacturing the same according to the present invention will be further described with reference to fig. 1 to 2.
The first embodiment is as follows:
the flame-retardant coating 7 of the embodiment adopts the lowest weight part ratio;
the flame-retardant coating comprises the following components in parts by weight: 2 parts of carboxymethyl cellulose, 4 parts of antimony trioxide, 3 parts of aluminum hydroxide, 2 parts of magnesium hydroxide, 1 part of aluminum hypophosphite and 6 parts of ABS resin.
A flame-retardant waterproof carton is composed of a flame-retardant waterproof paperboard; the flame-retardant waterproof paperboard is sequentially provided with a first paperboard layer 1, a honeycomb layer 2, a middle layer 3, a corrugated layer 4 and a second paperboard 5 from top to bottom; the upper surface and the lower surface of the first hard paperboard layer 1 are respectively provided with a waterproof layer 6 and a flame-retardant coating 7; the upper surface and the lower surface of the second hard paperboard layer 5 are respectively provided with a flame-retardant coating 7 and a waterproof layer 6; the honeycomb side length of the honeycomb layer 2 is 12 mm; the corrugated paper wave form of flute layer 4 is the U type.
The method comprises the following steps: waterproof treatment of the first and second cardboard layers;
carrying out surface treatment on one side of a hardboard; after the surface treatment of the hardboard is finished, performing primary coating on the hardboard by using coating oil, and drying the primary coating after the primary coating is finished, wherein the drying time of the primary coating is 1.5h, and the drying temperature is 60 ℃; finally, coating a film on the surface of the hard board by using a vacuum coating technology, and drying the surface coated film at the surface coating drying temperature of 50 ℃ for 1h to obtain a waterproof layer 6;
step two: flame retardant treatment of the first and second cardboard layers;
mixing the flame-retardant materials according to a certain proportion, adding 27 deionized water, heating and stirring for 20min at a stirring speed of 120R/min and a heating temperature of 65 ℃, and fully mixing the materials; centrifuging the mixture by a centrifuge, and removing excessive water; uniformly coating the centrifuged mixture on the other corresponding surface of the waterproof layer of the hardboard, and drying the hardboard at the drying temperature of 80 ℃ for 1.5h to obtain a flame-retardant coating 7;
step three: bonding the paperboards;
the first hard paperboard layer 1, the honeycomb layer 2, the middle layer 3, the corrugated layer 4 and the second hard paperboard layer 5 are bonded through an adhesive in sequence to obtain the flame-retardant waterproof paperboard, and the waterproof layer 6 is positioned on the outer side of the flame-retardant waterproof paperboard.
Step four: manufacturing a carton;
and (3) performing die cutting, indentation and carton nailing/gluing on the flame-retardant waterproof paperboard to obtain the flame-retardant waterproof carton.
Through the material proportion of the flame-retardant coating 7 selected by the embodiment, the thickness of the obtained flame-retardant coating 7 is lower and is 0.8mm, so that the flame-retardant effect of the carton is lower, and the carton is recommended to be used on the carton with smaller size. And the honeycomb layer 2 with the honeycomb side length of 12mm can provide excellent plane pressure resistance for small-size cartons, and plane weight of the cartons in stacking is avoided.
The second embodiment:
the flame-retardant coating 7 of the embodiment adopts the highest weight part ratio;
the flame-retardant coating 7 consists of the following components in parts by weight: 5 parts of carboxymethyl cellulose, 10 parts of antimony trioxide, 8 parts of aluminum hydroxide, 6 parts of magnesium hydroxide, 3 parts of aluminum hypophosphite and 12 parts of ABS resin.
A flame-retardant waterproof carton is composed of a flame-retardant waterproof paperboard; the flame-retardant waterproof paperboard is sequentially provided with a first paperboard layer 1, a honeycomb layer 2, a middle layer 3, a corrugated layer 4 and a second paperboard 5 from top to bottom; the upper surface and the lower surface of the first hard paperboard layer 1 are respectively provided with a waterproof layer 6 and a flame-retardant coating 7; the upper surface and the lower surface of the second hard paperboard layer 5 are respectively provided with a flame-retardant coating 7 and a waterproof layer 6; the honeycomb side length of the honeycomb layer 2 is 8 mm; the corrugated paper wave form of flute layer 4 is the U type.
The method comprises the following steps: waterproof treatment of the first and second cardboard layers;
carrying out surface treatment on one side of a hardboard; after the surface treatment of the hardboard is finished, performing primary coating on the hardboard by using coating oil, and drying the primary coating after the primary coating is finished, wherein the drying time of the primary coating is 2h, and the drying temperature is 70 ℃; finally, coating a film on the surface of the hard board by using a vacuum coating technology, and drying the surface coated film at the surface coating drying temperature of 60 ℃ for 2 hours to obtain a waterproof layer 6;
step two: flame retardant treatment of the first and second cardboard layers;
mixing the flame-retardant materials according to a certain proportion, adding 66 deionized water, heating and stirring for 35min at a stirring speed of 320R/min and a heating temperature of 85 ℃, and fully mixing the materials; centrifuging the mixture by a centrifuge, and removing excessive water; uniformly coating the mixture after the centrifugation on the other corresponding surface of the waterproof layer of the hardboard, and drying the hardboard at the drying temperature of 90 ℃ for 2 hours to obtain a flame-retardant coating 7;
step three: bonding the paperboards;
the first hard paperboard layer 1, the honeycomb layer 2, the middle layer 3, the corrugated layer 4 and the second hard paperboard layer 5 are bonded through an adhesive in sequence to obtain the flame-retardant waterproof paperboard, and the waterproof layer 6 is positioned on the outer side of the flame-retardant waterproof paperboard.
Step four: manufacturing a carton;
and (3) performing die cutting, indentation and carton nailing/gluing on the flame-retardant waterproof paperboard to obtain the flame-retardant waterproof carton.
According to the material proportion of the flame-retardant coating 7 selected in the embodiment, the thickness of the obtained flame-retardant coating 7 is lower and is 1.6mm, so that the carton has a more excellent flame-retardant effect, and the flame-retardant coating is recommended to be used on a large-size carton. And the honeycomb layer 2 with the honeycomb side length of 8mm can provide excellent plane pressure resistance for large-size cartons, and plane weight of the cartons in stacking is avoided.
Example three:
the flame-retardant coating 7 of the embodiment adopts the weight part ratio of the intermediate value;
the flame-retardant coating 7 consists of the following components in parts by weight: 3.5 parts of carboxymethyl cellulose, 7 parts of antimony trioxide, 5.5 parts of aluminum hydroxide, 4 parts of magnesium hydroxide, 2 parts of aluminum hypophosphite and 9 parts of ABS resin.
A flame-retardant waterproof carton is composed of a flame-retardant waterproof paperboard; the flame-retardant waterproof paperboard is sequentially provided with a first paperboard layer 1, a honeycomb layer 2, a middle layer 3, a corrugated layer 4 and a second paperboard 5 from top to bottom; the upper surface and the lower surface of the first hard paperboard layer 1 are respectively provided with a waterproof layer 6 and a flame-retardant coating 7; the upper surface and the lower surface of the second hard paperboard layer 5 are respectively provided with a flame-retardant coating 7 and a waterproof layer 6; the honeycomb side length of the honeycomb layer 2 is 10 mm; the corrugated paper wave form of flute layer 4 is the U type.
The method comprises the following steps: waterproof treatment of the first and second cardboard layers;
carrying out surface treatment on one side of a hardboard; after the surface treatment of the hardboard is finished, performing primary coating on the hardboard by using coating oil, and drying the primary coating after the primary coating is finished, wherein the drying time of the primary coating is 1.7h, and the drying temperature is 65 ℃; finally, coating a film on the surface of the hard board by using a vacuum coating technology, and drying the surface coated film at the surface coating drying temperature of 55 ℃ for 1.5h to obtain a waterproof layer 6;
step two: flame retardant treatment of the first and second cardboard layers;
mixing the flame-retardant materials according to a certain proportion, adding 47 deionized water, heating and stirring at the stirring speed of 210R/min and the heating temperature of 70 ℃ for 27.5min to fully mix the materials; centrifuging the mixture by a centrifuge, and removing excessive water; uniformly coating the centrifuged mixture on the other corresponding surface of the waterproof layer of the hardboard, and drying the hardboard at the drying temperature of 85 ℃ for 1.75h to obtain a flame-retardant coating 7;
step three: bonding the paperboards;
the first hard paperboard layer 1, the honeycomb layer 2, the middle layer 3, the corrugated layer 4 and the second hard paperboard layer 5 are bonded through an adhesive in sequence to obtain the flame-retardant waterproof paperboard, and the waterproof layer 6 is positioned on the outer side of the flame-retardant waterproof paperboard.
Step four: manufacturing a carton;
and (3) performing die cutting, impressing, nailing/box bonding on the flame-retardant waterproof paper board to obtain the flame-retardant waterproof paper box.
Through the material proportion of the flame-retardant coating 7 selected by the embodiment, the thickness of the obtained flame-retardant coating 7 is lower and is 1.2mm, so that the carton has a relatively excellent flame-retardant effect, and the paper box is suggested to be used on a medium-sized carton. And the honeycomb layer 2 with the honeycomb side length of 10mm can provide excellent plane pressure resistance for medium-sized cartons, and plane weight of the cartons in stacking is avoided.
The present invention should be considered as limited only by the preferred embodiments and not by the limitations of the invention, and it should be understood that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a fire-retardant waterproof carton which characterized in that: the flame-retardant waterproof carton is composed of flame-retardant waterproof paperboards; the flame-retardant waterproof paperboard is sequentially provided with a first hard paperboard layer, a honeycomb layer, a middle layer, a corrugated layer and a second hard paperboard from top to bottom; the upper surface and the lower surface of the first hard paperboard layer are respectively provided with a waterproof layer and a flame-retardant coating; the upper surface and the lower surface of the second hard paperboard layer are respectively provided with a flame-retardant coating and a waterproof layer; the honeycomb side length of the honeycomb layer is 4-12 mm; the corrugated paper wave form of flute layer is the U type.
2. A fire retardant and water resistant carton as claimed in claim 1, wherein: the thickness ratio of the first hard paperboard layer to the honeycomb layer to the middle layer to the corrugated layer to the second hard paperboard layer is 2:4:1:4: 2.
3. A fire retardant and water resistant carton as claimed in claim 1, wherein: the waterproof layers on the surfaces of the first cardboard layer and the second cardboard layer are high-density polyethylene coating films.
4. A fire retardant and water resistant carton as claimed in claim 1, wherein: the flame-retardant coating on the surfaces of the first cardboard layer and the second cardboard layer comprises the following components in parts by weight: 2-5 parts of carboxymethyl cellulose, 4-10 parts of antimony trioxide, 3-8 parts of aluminum hydroxide, 2-6 parts of magnesium hydroxide, 1-3 parts of aluminum hypophosphite and 6-12 parts of ABS resin.
5. The preparation method of the flame-retardant waterproof carton is characterized by comprising the following steps of: which comprises the following steps:
the method comprises the following steps: waterproof treatment of the first and second cardboard layers;
carrying out surface treatment on one side of a hardboard; after finishing the surface treatment of the hardboard, performing primary coating on the hardboard by using coating oil, and drying the primary coating oil after the primary coating is finished; finally, coating a film on the surface of the hard board by using a vacuum coating technology, and drying the high-density polyethylene coated with the film on the surface to obtain a waterproof layer;
step two: flame retardant treatment of the first and second layers of cardboard;
mixing the flame-retardant coating materials according to a certain proportion, and adding deionized water for heating and stirring to fully mix the materials; centrifuging the mixture by a centrifuge, and removing excessive water; uniformly coating the centrifuged mixture on the other side of the cardboard corresponding to the waterproof layer, and drying the cardboard to obtain the flame-retardant coating;
step three: bonding the paperboards;
bonding the first hard paperboard layer, the honeycomb layer, the middle layer, the corrugated layer and the second hard paperboard layer by an adhesive in sequence to obtain the flame-retardant waterproof paperboard, wherein the waterproof layer is positioned on the outer side of the flame-retardant waterproof paperboard;
step four: manufacturing a carton;
and (3) performing die cutting, indentation and carton nailing/gluing on the flame-retardant waterproof paperboard to obtain the flame-retardant waterproof carton.
6. The method for making fire retardant and waterproof carton according to claim 5, wherein: and the part of the deionized water in the second step is 27-66 parts.
7. The method for making fire retardant and waterproof carton according to claim 5, wherein: the drying treatment time of the base coat in the first step is 1.5-2h, and the drying temperature is 60-70 ℃; the drying temperature of the top coating is 50-60 ℃, and the drying time is 1-2 h.
8. The method for making fire retardant and waterproof carton according to claim 5, wherein: the heating and stirring time in the second step is 20-35min, the stirring speed is 120-320R/min, and the heating temperature is 65-85 ℃; the drying temperature is 80-90 ℃, and the drying time is 1.5-2 h.
9. The method for making fire-retardant and waterproof carton according to claim 5, characterized in that: the thickness of the waterproof layer is 0.2-0.6mm, and the thickness of the flame retardant layer is 0.8-1.3 mm.
10. The method for making fire retardant and waterproof carton according to claim 5, wherein: the flame-retardant coating in the second step consists of the following components in parts by weight: 2-5 parts of carboxymethyl cellulose, 4-10 parts of antimony trioxide, 3-8 parts of aluminum hydroxide, 2-6 parts of magnesium hydroxide, 1-3 parts of aluminum hypophosphite and 6-12 parts of ABS resin.
CN202210427809.7A 2022-04-22 2022-04-22 Flame-retardant waterproof carton and preparation method thereof Pending CN114808549A (en)

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CN111136959A (en) * 2020-03-03 2020-05-12 东莞市汇驰纸业有限公司 Preparation process of multilayer waterproof flame-retardant corrugated carton
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CN212171490U (en) * 2020-04-30 2020-12-18 浙江神奇包装有限公司 High-strength corrugated board
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005299061A (en) * 2004-04-08 2005-10-27 Taiei:Kk Negative ion-generating paper base and wall paper using the same
CN101052662A (en) * 2005-09-01 2007-10-10 天然纤维研究所 Expansion fire retardant agent and its manufacture
JP3132777U (en) * 2007-03-06 2007-06-21 張錫▼ちゃん▲ Cardboard structure
CN102852042A (en) * 2012-09-12 2013-01-02 山东长星集团有限公司 Flame-retardant paper
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