CN113580674A - Environment-friendly corrugated carton and manufacturing method thereof - Google Patents
Environment-friendly corrugated carton and manufacturing method thereof Download PDFInfo
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- CN113580674A CN113580674A CN202110877021.1A CN202110877021A CN113580674A CN 113580674 A CN113580674 A CN 113580674A CN 202110877021 A CN202110877021 A CN 202110877021A CN 113580674 A CN113580674 A CN 113580674A
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- 239000010410 layer Substances 0.000 claims description 154
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- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
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Images
Classifications
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- 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
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/08—Corrugated paper or cardboard
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/003—Crosslinking of starch
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09J103/04—Starch derivatives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an environment-friendly corrugated case and a manufacturing method thereof, wherein the environment-friendly corrugated case is made of an environment-friendly corrugated board, and the environment-friendly corrugated board sequentially comprises the following components: the waterproof corrugated paper comprises a first waterproof outer layer, a hard paperboard layer, a first buffer layer, a first corrugated paper layer, a fiber net layer, a second corrugated paper layer, a second buffer layer, a glass fiber layer and a second waterproof outer layer, wherein the layers are bonded through an environment-friendly adhesive; the first waterproof outer layer is waterproof coated paper; the waterproof coated paper comprises kraft paper, at least one surface of the kraft paper is coated with degradable waterproof glue, the second waterproof outer layer is stone paper, and the first buffer layer and the second buffer layer are both polylactic acid cotton; the fiber net layer is bamboo charcoal fiber net cloth. The environment-friendly corrugated paper box disclosed by the invention has the advantages of no formaldehyde release, easiness in degradation and environmental friendliness, and the environment-friendly corrugated paper board is formed by compounding multiple materials, has a better heat insulation effect and high toughness and is not easy to break or tear.
Description
Technical Field
The invention relates to the technical field of packaging cartons, in particular to an environment-friendly corrugated carton and a manufacturing method thereof.
Background
At present, corrugated cartons are the main articles of packaging industry in various packaging aspects of industrial products, living goods or agricultural products, and the corrugated cartons are light in weight, foldable, low in cost, green and environment-friendly, easy to change in specification, capable of being printed at high quality and recycled as renewable resources, so that the application range is wider and wider. But the corrugated boxes used have the following problems: 1. the formaldehyde release amount is high, the degradation is not easy, the environment is not protected, the structure is complex, and the cost is high; 2. the heat insulation effect is poor, and an additional heat insulation layer is required, so that the packaging space is occupied, and the packaging capacity is reduced; 3. the mechanical properties such as strength and the like are poor, and the cable is easy to break or tear; 4. among corrugated boards used in corrugated cases, even among layers of the corrugated boards, the bonding effect is poor, the corrugated boards are easy to fall off under stress, and the adhesive is easy to age and is not waterproof; 5. the waterproof effect is poor, and easy moisture absorption for mechanical properties greatly reduced, 6, the bottom surface bearing capacity of carton is poor, easy damaged.
Disclosure of Invention
The environment-friendly corrugated case has no formaldehyde release, is easy to degrade and is environment-friendly, corrugated boards used by the corrugated case and among layers of the corrugated boards are good in bonding effect and cannot fall off under stress, and the environment-friendly corrugated boards are good in mechanical properties such as strength and the like and are not easy to damage or tear; the whole waterproof effect of box is good, is difficult for absorbing moisture, can keep its mechanical properties well.
The invention adopts the technical scheme for solving the technical problems that: the utility model provides an environment-friendly corrugated carton, environment-friendly corrugated carton is made through cross cutting, indentation, nail case/gluing case by environment-friendly corrugated container board, environment-friendly corrugated container board includes in proper order: the waterproof corrugated paper comprises a first waterproof outer layer, a hard paperboard layer, a first buffer layer, a first corrugated paper layer, a fiber net layer, a second corrugated paper layer, a second buffer layer, a glass fiber layer and a second waterproof outer layer, wherein the layers are bonded through an environment-friendly adhesive; the first waterproof outer layer is waterproof coated paper; the waterproof coated paper comprises kraft paper, at least one surface of the kraft paper is coated with degradable waterproof glue, the second waterproof outer layer is stone paper, and the first buffer layer and the second buffer layer are both polylactic acid cotton; the fiber net layer is bamboo charcoal fiber net cloth.
For further improvement, the first corrugated paper layer and the second corrugated paper layer are the same in structure, the first corrugated paper layer is formed by bonding a middle wave paper layer and surface layer paper on the upper side and the lower side of the wave paper layer, a plurality of trapezoidal channels are arranged on the two sides of the wave paper layer, a supporting circular pipe is arranged in each trapezoidal channel, and silencing holes are formed in the surface of each supporting circular pipe.
Further perfecting, a plurality of fixed orifices have together been seted up on first corrugated paper layer, fibre web layer and the second corrugated paper layer, are equipped with clearance fit's paper cylinder in the fixed orifices, carry out fixed connection through environmental protection adhesive between paper cylinder and the fixed orifices.
Further perfecting, the environment-friendly corrugated carton comprises a front side paper board, a rear side paper board, a left side paper board and a right side paper board, wherein the bottoms of the front side paper board and the rear side paper board are respectively provided with a first bottom paper board and a second bottom paper board, the first bottom paper board is of a concave structure, one end of the first bottom paper board is provided with a left L-shaped lap board and a right L-shaped lap board, a T-shaped groove is formed between the two L-shaped lap boards, the second bottom paper board is of a convex structure, the middle part of one end of the first bottom paper board is provided with a T-shaped lap board, the first bottom paper board and the second bottom paper board are in concave-convex fit with each other, the L-shaped lap boards are lapped on the upper surface of the second bottom paper board, the T-shaped lap boards are lapped on the first bottom paper board, the bottoms of the left side paper board and the right side paper board are respectively provided with an L-shaped bottom paper board, one edge of the L-shaped bottom paper board at the inner end is positioned between the T-shaped lap board and the first bottom paper board, the other side of the L-shaped bottom paperboard at the outer end is positioned above the T-shaped lap joint plate.
Further perfection, be equipped with buckle structure between L shape bottom surface cardboard and the T shape lapping plate, buckle structure is including setting up the knot strip in L shape bottom surface cardboard outer end and setting up the knot hole on the T shape lapping plate, the knot strip is detained from the top into through T type groove after the knot hole and worn back to between L shape bottom surface cardboard and the L shape lapping plate.
Further perfect, it has first magic subsides to be fixed to be provided with on the gib, the downside of L shape bottom surface cardboard is equipped with the second magic and pastes, first magic is pasted and is connected through the cooperation of T type groove with the second magic.
Further perfection, the preparation method of the environment-friendly adhesive comprises the following steps:
s1: preparing corn starch A with the concentration of 22-25 Be';
s2: adding diacetyl tartaric acid monoglyceride and percarbamide into the corn starch A in the step S1, and stirring at the temperature of 32-36 ℃ for crosslinking grafting reaction for 35-40min to prepare slurry B;
s3: conveying the slurry B in the step S2 to a dryer for pregelatinization and drying at the temperature of 135-145 ℃ to obtain a material C;
s4: and (5) crushing and sieving the material C obtained in the step S3, and then conveying the material C to a separator for collection to obtain the environment-friendly adhesive.
The concentration of the diacetyl tartaric acid monoglyceride in the step S2 is 1.05-1.15%, the stirring rotation speed in the step S2 is 400-450r/min, the dryer in the step S3 is a vacuum dryer, the water content of the material C in the step S3 is 4-5%, the material C in the step S4 is crushed and then passes through a sieve of 80-90 meshes, and the separator in the step S4 is a cyclone separator.
Further perfection, the degradable waterproof glue is prepared from the following raw materials in parts by weight: 20-40 parts of polyvinyl alcohol, 4-7 parts of acrylate, 2-2.5 parts of nano calcium carbonate, 2-4 parts of flame retardant, 0.2-0.5 part of antioxidant, 1000 parts of deionized water, 3-5 parts of glutinous rice starch, 1.6-2 parts of thiodipropionic acid and 1.25-1.5 parts of dimethyl silicone oil.
The manufacturing method of the environment-friendly corrugated case comprises the following steps,
step 1, bonding the first corrugated paper layer, the fiber net layer and the second corrugated paper layer through an environment-friendly adhesive to obtain a paper core;
step 2, sequentially bonding the first waterproof outer layer, the hard paperboard layer and the first buffer layer through an environment-friendly adhesive to obtain a first surface layer;
step 3, sequentially bonding the second buffer layer, the glass fiber layer and the second waterproof outer layer through an environment-friendly adhesive to obtain a second surface layer;
and 5, carrying out die cutting, indentation and box nailing/sticking on the obtained environment-friendly corrugated board to obtain the environment-friendly corrugated box.
The invention has the beneficial effects that:
1. the environment-friendly corrugated paper box disclosed by the invention has the advantages that formaldehyde is not released, the environment-friendly corrugated paper box is easy to degrade and environment-friendly, the environment-friendly corrugated paper board is formed by compounding multiple materials, the heat insulation effect is better, an additional heat insulation layer is not required, the packaging space is not occupied, and the packaging capacity is large; the paper core of the environment-friendly corrugated board consists of a first corrugated paper layer, a fiber net layer and a second corrugated paper layer, has good mechanical properties such as strength and the like, has high toughness, and is not easy to break or tear;
2. the environment-friendly corrugated board has the advantages that the paper core of the environment-friendly corrugated board is provided with a plurality of fixing holes, the paper core is internally provided with the paper cylinders in clearance fit, and the paper cylinders are fixedly connected through the environment-friendly adhesive, so that the core material has good bonding effect, can not fall off under stress, and the environment-friendly adhesive has a novel formula, has the effects of high viscosity, degradability, ageing resistance, water resistance and the like, and can not fall off under stress among the layers of the environment-friendly corrugated board;
3. the surface of environment-friendly corrugated container board is first waterproof skin, cardboard layer and first buffer layer pass through the first surface course that the environmental protection adhesive obtained of bonding in proper order, be equipped with degradable waterproof glue on the first waterproof skin, environment-friendly corrugated container board's internal surface is the second buffer layer, glass fiber layer and the waterproof outer second surface course that obtains of bonding in proper order of second through the environmental protection adhesive, not only water-proof effects is good, be difficult for the moisture absorption, and the surface has certain hardness, mechanical properties is good, be difficult to by sharp-pointed object fish tail or puncture, the inboard has the buffer layer, certain elasticity has, can absorb the impact force, the buffer property of carton is high, can be used for some special packaging fields, like ceramic packaging, heavier article packing.
4. The core paper of the environment-friendly corrugated paper board has two layers of corrugated paper layers, the corrugated paper layers are provided with the structures of the corrugated paper layers, the trapezoidal channels, the supporting round pipes and the like, the corrugated paper board has good damping performance, the surface of the supporting round pipes is provided with silencing holes, and the sound insulation performance of the corrugated paper layers can be improved.
5. The bottom surface of the environment-friendly corrugated carton is a bottom buckling structure consisting of a first bottom paperboard, a second bottom paperboard, a T-shaped lap board, an L-shaped lap board and two L-shaped bottom paperboards, has high bearing performance and long service life, is not easy to break the bottom, and is suitable for packaging of some large-area bottoms or heavier products.
Drawings
FIG. 1 is a schematic structural diagram of an environment-friendly corrugated cardboard;
fig. 2 is a schematic structural diagram of a corrugated paper layer;
fig. 3 is a schematic top view of the bottom fastening structure of the environment-friendly corrugated box;
description of reference numerals: 1. the waterproof structure comprises a first waterproof outer layer, 2, a hard paperboard layer, 3, a first buffer layer, 4, a first corrugated paper layer, 5, a fiber net layer, 6, a second corrugated paper layer, 7, a second buffer layer, 8, a glass fiber layer, 9, a second waterproof outer layer, 10, a wave paper layer, 11, surface paper, 12, a trapezoidal channel, 13, a supporting circular pipe, 14, a silencing hole, 15, a fixing hole, 16, a paper column, 17, a front side paper board, 18, a rear side paper board, 19, a left side paper board, 20, a right side paper board, 21, a first bottom paper board, 22, a second bottom paper board, 23, an L-shaped lap board, 24, a T-shaped lap board, 25, an L-shaped bottom paper board, 26, a buckle strip, 27 and a buckle hole.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
referring to figure 1: in this embodiment, an environment-friendly corrugated carton, environment-friendly corrugated carton is made by environment-friendly corrugated container board through cross cutting, indentation, nail case/glue case, environment-friendly corrugated container board includes in proper order: the waterproof paper comprises a first waterproof outer layer 1, a hard paper layer 2, a first buffer layer 3, a first corrugated paper layer 4, a fiber net layer 5, a second corrugated paper layer 6, a second buffer layer 7, a glass fiber layer 8 and a second waterproof outer layer 9, wherein the layers are bonded through an environment-friendly adhesive; the first waterproof outer layer 1 is waterproof coated paper; the waterproof coated paper comprises brown paper which is tough and waterproof packaging paper and is brown yellow, and is made by chemically pulping wood fibers of coniferous trees, pulping the wood fibers in a pulping machine, adding sizing materials, dyes and the like, and finally making the paper in a paper machine. At least one surface coating of kraft paper has degradable waterproof glue, and the waterproof performance of kraft paper has further been strengthened like this, the waterproof skin 9 of second is stone paper, and stone paper is with calcium carbonate as main materials, uses macromolecular material and multiple inorganic matter as auxiliary material, utilizes polymer interface chemical principle and filling modification technology, a novel paper that forms through special technology processing. The production of the stone paper technology not only solves the problem of harm to the environment caused by the pollution of the traditional paper making, but also solves the problems of white pollution and waste of a large amount of petroleum resources caused by the use of a large amount of plastic packages. The stone paper not only has the advantages of water resistance, fog resistance, oil resistance, insect resistance and the like, but also has better physical properties than wood pulp paper in tearing resistance and folding resistance. The first buffer layer 3 and the second buffer layer 7 are both polylactic acid cotton; the polylactic acid cotton is also called as corn fiber cotton, and the fiber has biodegradability, is soft and smooth in corn fiber, high in strength, moisture-absorbing and breathable, can be well combined with an environment-friendly adhesive, and has good damping performance and certain heat-insulating performance. The outer surface of the environment-friendly corrugated board is a first surface layer formed by sequentially bonding a first waterproof outer layer, a hard paperboard layer and a first buffer layer through an environment-friendly adhesive, and the first waterproof outer layer is provided with a degradable waterproof adhesive and has strong waterproof performance. The internal surface of environment-friendly corrugated container board is the second buffer layer, the second surface course that glass fiber layer and the waterproof skin of second obtained through the bonding in proper order of environmental protection adhesive, make the inside and outside surface of carton not only water-proof effects good, be difficult for the moisture absorption, and the surface has certain hardness moreover, mechanical properties is good, be difficult to by sharp-pointed object fish tail or puncture, multilayer buffer layer has in the cardboard, certain resilience has, can absorb the impact force, the shock-absorbing capacity of carton has been improved, be applicable to some special packaging fields, like ceramic package, heavier object packaging. The environment-friendly corrugated paper box disclosed by the invention has the advantages that formaldehyde is not released, the environment-friendly corrugated paper box is easy to degrade and environment-friendly, the environment-friendly corrugated paper board is formed by compounding multiple materials, the heat insulation effect is better, an additional heat insulation layer is not required, the packaging space is not occupied, and the packaging capacity is large; the paper core of the environment-friendly corrugated board consists of a first corrugated paper layer, a fiber mesh layer and a second corrugated paper layer, wherein the fiber mesh layer 5 is bamboo charcoal fiber mesh cloth. The bamboo charcoal fiber is a green environment-friendly material extracted from raw bamboo, has natural mite-proof, odor-resistant, insect-proof and anion-generating properties of the bamboo, and has strong toughness and wear resistance and unique rebound resilience; the bamboo charcoal fiber mesh cloth has the advantages of strong longitudinal and transverse strength, stability, uniformity and good drapability, and the bamboo charcoal fiber mesh cloth added into the bamboo charcoal fiber mesh cloth has good mechanical properties such as strength and the like, high toughness and is not easy to break or tear.
As shown in fig. 2, the first corrugated paper layer 4 and the second corrugated paper layer 6 have the same structure, the first corrugated paper layer 4 is formed by bonding a middle corrugated paper layer 10 and surface paper 11 on the upper and lower sides of the middle corrugated paper layer, a plurality of trapezoidal channels 12 are arranged on the two sides of the corrugated paper layer, a supporting circular tube 13 is arranged in each trapezoidal channel 12, the supporting circular tube 13 has good damping performance, and a silencing hole 14 is arranged on the surface of each supporting circular tube 13. The sound insulation performance of the corrugated paper layer can be improved.
A plurality of fixing holes 15 are formed in the first corrugated paper layer 4, the fiber net layer 5 and the second corrugated paper layer 6 together and can penetrate through the three material layers, paper cylinders 16 in clearance fit are arranged in the fixing holes 15, and the paper cylinders 16 are fixedly connected with the fixing holes 15 through environment-friendly adhesives, so that the connection performance between the three material layers can be improved, the bonding performance between the layers of the environment-friendly corrugated board is improved, and the material layers are not prone to falling off under stress.
As shown in fig. 3, the environment-friendly corrugated carton comprises a front side paperboard 17, a rear side paperboard 18, a left side paperboard 19 and a right side paperboard 20, wherein the bottom of the front side paperboard 17 and the bottom of the rear side paperboard 18 are respectively provided with a first bottom paperboard 21 and a second bottom paperboard 22, the first bottom paperboard 21 is of a concave structure, one end of the first bottom paperboard is provided with a left L-shaped bridging plate 23 and a right L-shaped bridging plate 23, a T-shaped groove is formed between the two L-shaped bridging plates 23, the second bottom paperboard 22 is of a convex structure, the middle part of one end of the second bottom paperboard is provided with a T-shaped bridging plate 24, the first bottom paperboard 21 and the second bottom paperboard 22 are in concave-convex fit with each other, wherein the L-shaped bridging plate 23 is lapped on the second bottom paperboard 22, the T-shaped bridging plate 24 is lapped on the first bottom paperboard 21, so as to establish a primary bottom buckling plane, and can transmit the gravity of articles to the bottom of the front side paperboard 17 and the rear side paperboard 18, the bottom of the left side paper board 19 and the right side paper board 20 are respectively provided with an L-shaped bottom paper board 25, one side of the L-shaped bottom paper board 25 at the inner end is positioned between the T-shaped lap board 24 and the first bottom paper board 21, and the other side of the L-shaped bottom paper board 25 at the outer end is positioned above the T-shaped lap board 24. The L-shaped bottom sheet 25 may transmit the weight of the article to the bottom of the left and right side sheets 19, 20 to reinforce the bottom constructed by the first and second bottom sheets 21, 22. Through above-mentioned technical scheme, the double-deck rate of the knot end structure of carton bottom surface is high, and the effort of bottom surface random point can all finally be shared on front side cardboard 17, rear side cardboard 18, left side cardboard 19 and right side cardboard 20, and bearing capacity is good, can improve the long service life of carton, is difficult to the broken end, is fit for the packing of some large tracts of land end or heavier product.
A buckle structure is arranged between the L-shaped bottom paperboard 25 and the T-shaped lapping plate 24 and comprises a buckle strip 26 arranged at the outer end of the L-shaped bottom paperboard 25 and a buckle hole 27 arranged on the T-shaped lapping plate 24, and the buckle strip 26 is buckled into the buckle hole 27 from the upper surface and then penetrates back to the position between the L-shaped bottom paperboard 25 and the L-shaped lapping plate 23 through a T-shaped groove. The buckle structure can strengthen the firmness of the connection between the L-shaped bottom paperboard 25 and the T-shaped lap-joint plate 24 and improve the bearing capacity of the bottom center of the carton.
Be provided with first magic subsides on the gib 26 fixedly, the downside of L shape bottom surface cardboard 25 is equipped with the second magic subsides, first magic subsides cooperate through T type groove with the second magic subsides to be connected. Therefore, the buckling strip 26 is not easy to separate from the L-shaped bottom paperboard 25 and the L-shaped lap-joint plate 23, and the reliability of the buckling structure is improved.
The preparation method of the environment-friendly adhesive comprises the following steps:
s1: preparing corn starch A with the concentration of 22-25 Be';
s2: adding diacetyl tartaric acid monoglyceride and percarbamide into the corn starch A in the step S1, and stirring at the temperature of 32-36 ℃ for crosslinking grafting reaction for 35-40min to prepare slurry B;
s3: conveying the slurry B in the step S2 to a dryer for pregelatinization and drying at the temperature of 135-145 ℃ to obtain a material C;
s4: and (5) crushing and sieving the material C obtained in the step S3, and then conveying the material C to a separator for collection to obtain the environment-friendly adhesive.
The concentration of the diacetyl tartaric acid monoglyceride in the step S2 is 1.05-1.15%, the stirring rotation speed in the step S2 is 400-450r/min, the dryer in the step S3 is a vacuum dryer, the water content of the material C in the step S3 is 4-5%, the material C in the step S4 is crushed and then passes through a sieve of 80-90 meshes, and the separator in the step S4 is a cyclone separator. The novel environment-friendly adhesive prepared by the invention has good solubility, high viscosity and strong binding power, is nontoxic and harmless, can meet the requirements of the environment-friendly aspect on products, and does not generate harmful gas and pollute air after being combusted.
The degradable waterproof glue is prepared from the following raw materials in parts by weight: 20-40 parts of polyvinyl alcohol, 4-7 parts of acrylate, 2-2.5 parts of nano calcium carbonate, 2-4 parts of flame retardant, 0.2-0.5 part of antioxidant, 1000 parts of deionized water, 3-5 parts of glutinous rice starch, 1.6-2 parts of thiodipropionic acid and 1.25-1.5 parts of dimethyl silicone oil. The invention takes polyvinyl alcohol as a main raw material, the product of the invention can achieve the purpose of natural biodegradation by adding the acrylic ester, so that the product of the invention has the waterproof function, is green and environment-friendly, is nontoxic and tasteless, does not pollute the environment, and has no harm to human bodies. The product of the invention has flexibility, compressibility and high tensile strength, does not pollute a medium, is not eroded by the medium, and has good chemical stability.
The manufacturing method of the environment-friendly corrugated case comprises the following steps,
step 1, bonding the first corrugated paper layer 4, the fiber net layer 5 and the second corrugated paper layer 6 through an environment-friendly adhesive to obtain a paper core;
step 2, sequentially adhering the first waterproof outer layer 1, the hard board layer 2 and the first buffer layer 3 through an environment-friendly adhesive to obtain a first surface layer;
step 3, sequentially bonding the second buffer layer 7, the glass fiber layer 8 and the second waterproof outer layer 9 through an environment-friendly adhesive to obtain a second surface layer;
and 5, carrying out die cutting, indentation and box nailing/sticking on the obtained environment-friendly corrugated board to obtain the environment-friendly corrugated box.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (10)
1. The utility model provides an environment-friendly corrugated box which characterized in that: the environment-friendly corrugated case is made of environment-friendly corrugated boards through die cutting, indentation and nailing/gluing, and the environment-friendly corrugated boards sequentially comprise: the waterproof paper comprises a first waterproof outer layer (1), a hard board layer (2), a first buffer layer (3), a first corrugated paper layer (4), a fiber mesh layer (5), a second corrugated paper layer (6), a second buffer layer (7), a glass fiber layer (8) and a second waterproof outer layer (9), wherein the layers are bonded through an environment-friendly adhesive; the first waterproof outer layer (1) is waterproof coated paper; the waterproof coated paper comprises kraft paper, at least one surface of the kraft paper is coated with degradable waterproof glue, the second waterproof outer layer (9) is stone paper, and the first buffer layer (3) and the second buffer layer (7) are both polylactic acid cotton; the fiber mesh layer (5) is bamboo charcoal fiber mesh cloth.
2. The environment-friendly corrugated box as claimed in claim 1, wherein: the structure of first corrugated paper layer (4) and second corrugated paper layer (6) is the same, first corrugated paper layer (4) are formed by bonding of the surface course paper (11) of wave paper layer (10) in the middle of and both sides about it, the both sides of wave paper layer (10) have trapezoidal channel of a plurality of (12), are equipped with in trapezoidal channel (12) and support pipe (13), and the surface that supports pipe (13) is equipped with bloop (14).
3. The environment-friendly corrugated box as set forth in claim 1 or 2, wherein: a plurality of fixing holes (15) are formed in the first corrugated paper layer (4), the fiber net layer (5) and the second corrugated paper layer (6) together, paper cylinders (16) in clearance fit are arranged in the fixing holes (15), and the paper cylinders (16) are fixedly connected with the fixing holes (15) through environment-friendly adhesives.
4. The environment-friendly corrugated box as claimed in claim 3, wherein: the environment-friendly corrugated carton comprises a front side paper board (17), a rear side paper board (18), a left side paper board (19) and a right side paper board (20), wherein the bottoms of the front side paper board (17) and the rear side paper board (18) are respectively provided with a first bottom paper board (21) and a second bottom paper board (22), the first bottom paper board (21) is of a concave structure, one end of the first bottom paper board is provided with a left L-shaped lapping plate (23) and a right L-shaped lapping plate (23), a T-shaped groove is formed between the two L-shaped lapping plates (23), the second bottom paper board (22) is of a convex structure, the middle part of one end of the second bottom paper board is provided with a T-shaped lapping plate (24), the first bottom paper board (21) and the second bottom paper board (22) are in concave-convex fit with each other, the L-shaped lapping plates (23) are lapped on the second bottom paper board (22), and the T-shaped lapping plates (24) are lapped on the first bottom paper board (21), the bottom of the left side paper board (19) and the bottom of the right side paper board (20) are respectively provided with an L-shaped bottom paper board (25), one side of the L-shaped bottom paper board (25) at the inner end is positioned between the T-shaped lap joint plate (24) and the first bottom paper board (21), and the other side of the L-shaped bottom paper board (25) at the outer end is positioned above the T-shaped lap joint plate (24).
5. The environment-friendly corrugated box as claimed in claim 4, wherein: be equipped with buckle structure between L shape bottom surface cardboard (25) and T shape lapping plate (24), buckle structure is including setting up profile (26) in L shape bottom surface cardboard (25) outer end and setting up knot hole (27) on T shape lapping plate (24), profile (26) are detained from the top into between L shape bottom surface cardboard (25) and L shape lapping plate (23) are worn back through T type groove behind knot hole (27).
6. The environment-friendly corrugated box as claimed in claim 5, wherein: the buckle strip (26) is fixedly provided with a first magic tape, the lower side of the L-shaped bottom paper board (25) is provided with a second magic tape, and the first magic tape and the second magic tape are connected in a matched mode through a T-shaped groove.
7. The environment-friendly corrugated carton as claimed in claim 6, wherein: the preparation method of the environment-friendly adhesive comprises the following steps:
s1: preparing corn starch A with the concentration of 22-25 Be';
s2: adding diacetyl tartaric acid monoglyceride and percarbamide into the corn starch A in the step S1, and stirring at the temperature of 32-36 ℃ for crosslinking grafting reaction for 35-40min to prepare slurry B;
s3: conveying the slurry B in the step S2 to a dryer for pregelatinization and drying at the temperature of 135-145 ℃ to obtain a material C;
s4: and (5) crushing and sieving the material C obtained in the step S3, and then conveying the material C to a separator for collection to obtain the environment-friendly adhesive.
8. The environment-friendly corrugated box as claimed in claim 7, wherein: the concentration of the diacetyl tartaric acid monoglyceride in the step S2 is 1.05-1.15%, the stirring rotation speed in the step S2 is 400-450r/min, the dryer in the step S3 is a vacuum dryer, the water content of the material C in the step S3 is 4-5%, the material C in the step S4 is crushed and then passes through a sieve of 80-90 meshes, and the separator in the step S4 is a cyclone separator.
9. The environment-friendly corrugated box as claimed in claim 8, wherein: the degradable waterproof glue is prepared from the following raw materials in parts by weight: 20-40 parts of polyvinyl alcohol, 4-7 parts of acrylate, 2-2.5 parts of nano calcium carbonate, 2-4 parts of flame retardant, 0.2-0.5 part of antioxidant, 1000 parts of deionized water, 3-5 parts of glutinous rice starch, 1.6-2 parts of thiodipropionic acid and 1.25-1.5 parts of dimethyl silicone oil.
10. A method for manufacturing an environmentally friendly corrugated box as set forth in any one of claims 1 to 9, wherein: comprises the following steps of (a) carrying out,
step 1, bonding a first corrugated paper layer (4), a fiber net layer (5) and a second corrugated paper layer (6) through an environment-friendly adhesive to obtain a paper core;
step 2, sequentially adhering the first waterproof outer layer (1), the hardboard layer (2) and the first buffer layer (3) through an environment-friendly adhesive to obtain a first surface layer;
step 3, sequentially bonding the second buffer layer (7), the glass fiber layer (8) and the second waterproof outer layer (9) through an environment-friendly adhesive to obtain a second surface layer;
step 4, forming a plurality of fixing holes (15) on the paper core in the step 1, then bonding the first buffer layer (3) of the first surface layer obtained in the step 2 with the first corrugated paper layer (4) of the paper core through an environment-friendly adhesive, then placing paper columns (16) in the fixing holes (15), and bonding the second buffer layer (7) of the second surface layer obtained in the step 3 with the second corrugated paper layer (6) of the paper core through the environment-friendly adhesive to obtain the environment-friendly corrugated board;
and 5, carrying out die cutting, indentation and box nailing/sticking on the obtained environment-friendly corrugated board to obtain the environment-friendly corrugated box.
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| CN202110877021.1A CN113580674A (en) | 2021-07-31 | 2021-07-31 | Environment-friendly corrugated carton and manufacturing method thereof |
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