CN113291031A - Vertical W-core corrugated composite sandwich board and preparation method thereof - Google Patents

Vertical W-core corrugated composite sandwich board and preparation method thereof Download PDF

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Publication number
CN113291031A
CN113291031A CN202110754885.4A CN202110754885A CN113291031A CN 113291031 A CN113291031 A CN 113291031A CN 202110754885 A CN202110754885 A CN 202110754885A CN 113291031 A CN113291031 A CN 113291031A
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core
corrugated
layer
board
vertical
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Inventor
杨滨
刘拓宇
郝景新
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Central South University of Forestry and Technology
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Central South University of Forestry and Technology
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Priority to CN202110754885.4A priority Critical patent/CN113291031A/en
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    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • 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
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D191/00—Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D201/00—Coating compositions based on unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—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
    • B32B2255/12—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
    • 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)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a vertical W-core corrugated composite sandwich board and a preparation method thereof, wherein the vertical W-core corrugated composite sandwich board comprises a surface board layer, a W-core corrugated core layer and a floor layer, wherein the surface board layer and the floor layer are respectively bonded on two sides of the W-core corrugated core layer; a preparation method of a vertical W-core corrugated composite sandwich board comprises the steps of firstly, laminating and gluing; step two, saw cutting to fix the thickness; step three, vertical lamination; step four, gluing the composite board; step five, spraying and drying; in the first step, prepared corrugated paper sheets are prepared at first, and then the prepared corrugated paper sheets are laminated and glued along smooth surfaces to obtain the corrugated board with the required thickness; in the second step, the corrugated board obtained in the second step is drawn with the W-shaped cutting lines to be cut.

Description

Vertical W-core corrugated composite sandwich board and preparation method thereof
Technical Field
The invention relates to a composite board and the technical field of forming thereof, in particular to a vertical W-core corrugated composite sandwich board and a preparation method thereof.
Background
At present, corrugated boards have good application prospects in the fields of packaging, furniture and the like due to the advantages of light weight, environmental protection and the like, and generally, the corrugated paper is a three-layer sandwich composite structure consisting of an upper surface plate, a lower surface plate and a corrugated core belt. The U-shaped core layer structure can deform under the influence of external force, and the mechanical property of the plate is damaged. The conventional corrugated board is impacted by external force such as extrusion, the surface of the corrugated board can be deformed such as collapse or cavity, the service life of the board is seriously influenced, the resource is greatly wasted, and meanwhile, after the corrugated board is exposed to water, the strength of the corrugated board is greatly reduced, so that the design of the vertical W-core corrugated composite sandwich board and the preparation method thereof are necessary.
Disclosure of Invention
The invention aims to provide a vertical W-core corrugated composite sandwich board and a preparation method thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a compound battenboard of vertical W core area flute, includes table layer, W core area flute core layer and floor layer, the both sides of W core area flute core layer are bonded respectively and are had table layer and floor layer.
A preparation method of a vertical W-core corrugated composite sandwich board comprises the steps of firstly, laminating and gluing; step two, saw cutting to fix the thickness; step three, vertical lamination; step four, gluing the composite board; step five, spraying and drying;
in the first step, prepared corrugated paper sheets are prepared at first, and then the prepared corrugated paper sheets are laminated and glued along smooth surfaces to obtain the corrugated board with the required thickness;
in the second step, a W-shaped cutting line required to be cut is drawn on the corrugated board obtained in the second step, and then a cutting device is used for cutting to obtain a W-shaped core belt unit;
in the third step, gluing and widening the W-shaped core belt unit obtained in the second step along the smooth surface by using a clamp, and continuously pressing for 24 hours to obtain a finished W-shaped core belt;
in the fourth step, the residual glue surface on the surface of the W-type core belt obtained in the third step is planed to obtain a corrugated layer of the W-type core belt, then the required glue surface of the corrugated layer of the W-type core belt is shielded by using a shielding film, then a waterproof agent is uniformly sprayed on the surface of the corrugated layer of the W-type core belt by using spraying equipment, after the spraying is finished, the shielding film shielded on the surface of the corrugated layer of the W-type core belt can be taken down, then the corrugated layer of the W-type core belt is dried, then the surface which is dried and cooled to room temperature and is not sprayed with the waterproof agent is coated with glue, then the selected appropriate surface plate layer and the non-film-coated surface of the floor layer are respectively bonded on the corrugated layer of the W-type core belt by using the glue coated on the surface of the corrugated layer of the W-type core belt, and then the semi-finished product W-type core belt corrugated composite sandwich board can be obtained by pressing for 24 hours, the film coating surfaces of the surface plate layer and the floor plate layer are subjected to film coating treatment by a corrugated board film coating machine;
and in the fifth step, uniformly spraying the waterproof agent prepared in the fourth step on the surface of the semi-finished W-core corrugated composite sandwich board by using spraying equipment, and drying the sprayed semi-finished W-core corrugated composite sandwich board to obtain the finished vertical W-core corrugated composite sandwich board.
Preferably, in the fourth step, the drying temperature is 80-90 ℃, and the drying time is 20-30 min.
Preferably, in the fourth step, the film used in the film coating process is a PE film.
Preferably, in the fourth step, the waterproof agent is prepared by mixing resin, glyceryl stearate, paraffin, sodium hydroxide, oleic acid, tung oil and water according to the weight ratio of 5: 20: 1: 2: 0.1: 5: 200.
Preferably, in the fourth step, the thickness of the selected surface board layer is 1-5mm, the thickness of the selected floor board layer is 1-5mm, and the thickness of the corrugated layer of the obtained W-shaped core belt is 18-30mm
Preferably, in the fifth step, the drying conditions are as follows: the drying temperature is 70-80 ℃, and the drying time is 30-40 min.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the W-shaped base band unit is utilized to form a bidirectional V-shaped structure after vertical assembly, so that the stability of the device is improved by utilizing the stable property of a triangle, and meanwhile, the W-shaped base band structure is a triangular structure based on the micropore thick wall. The flat pressing resistance is good, the buffering performance is excellent, the application range of the device is enlarged, and meanwhile, in the preparation process, the raw materials are sprayed with waterproof glue, so that the waterproof performance of the device is improved, and further the practicability of the device is improved.
Drawings
FIG. 1 is a perspective view of the overall construction of the present invention;
FIG. 2 is a perspective view of a sheet of corrugated paper in an embodiment of the present invention;
FIG. 3 is a perspective view of a corrugated cardboard in an embodiment of the present invention;
FIG. 4 is a schematic view of a cutting line formed on a corrugated cardboard in an embodiment of the present invention;
FIG. 5 is a schematic view of a W-core belt unit in an embodiment of the present invention;
FIG. 6 is a schematic illustration of a finished W-cored strip in accordance with an embodiment of the present invention;
FIG. 7 is a schematic illustration of angles A and B in a shear line in an embodiment of the invention;
FIG. 8 is a flow chart of a method of the present invention;
in the figure: 1. a skin layer; 2. the W-type core is provided with a corrugated core layer; 3. and (6) a floor layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention: the utility model provides a compound battenboard of vertical W core area flute, includes table layer 1, W core area flute core 2 and floor layer 3, and the both sides of W core area flute core 2 are bonded respectively has table layer 1 and floor layer 3.
Referring to fig. 2-8, an embodiment of the present invention:
example 1:
a preparation method of a vertical W-core corrugated composite sandwich board comprises the steps of firstly, laminating and gluing; step two, saw cutting to fix the thickness; step three, vertical lamination; step four, gluing the composite board; step five, spraying and drying;
in the first step, firstly, prepared corrugated paper sheets are prepared, wherein the specification of the corrugated paper sheets is 2000mm x 1500mm, the corrugated paper sheets are shown in figure 2, then the prepared corrugated paper sheets are laminated and glued along smooth surfaces to obtain a corrugated board with the required thickness of 20mm, and the corrugated board is shown in figure 3;
in the second step, the corrugated board obtained in the second step is painted with a W-shaped cutting line to be cut, the W-shaped cutting line is as shown in fig. 4, and then a W-shaped core belt unit is obtained by cutting with a cutting device, the W-shaped core belt unit is as shown in fig. 5, and the angle range of the angle a in the W-shaped core belt unit is 1-45 degrees, the larger the angle is, the more waste materials are generated, theoretically: the smaller the angle is, the material is saved, the gluing area is increased, the mechanical strength is higher, meanwhile, the angle B is 1 degree, and the angle schematic diagram of the W-shaped core belt unit is shown in FIG. 7;
in the third step, gluing and widening the W-shaped core belt unit obtained in the second step along the smooth surface by using a clamp, and continuously pressing for 24 hours to obtain a finished product W-shaped core belt, wherein the finished product W-shaped core belt is as shown in figure 6;
in the fourth step, the residual glue surface on the surface of the W-type core strip obtained in the third step is planed to obtain a W-type core strip corrugated layer 2, then the required glue surface of the W-type core strip corrugated layer 2 is shielded by using a shielding film, then a waterproof agent is uniformly sprayed on the surface of the W-type core strip corrugated layer 2 by using spraying equipment, after the spraying is completed, the shielding film shielded on the surface of the W-type core strip corrugated layer 2 is taken down, then the W-type core strip corrugated layer 2 is dried at 80 ℃ for 20min, then the surface of the W-type core strip corrugated layer 2 which is dried and cooled to room temperature is coated with glue which is not coated with the waterproof agent, then the selected proper surface plate layer 1 and the non-coated surface of the floor layer 3 are respectively bonded on the W-type core strip corrugated layer 2 by using the glue on the surface of the W-type core strip corrugated layer 2, pressing for 24 hours to obtain a semi-finished W-core corrugated composite sandwich board, wherein the film-coating surfaces of the surface board layer 1 and the floor board layer 3 are subjected to film-coating treatment by a corrugated board film-coating machine, the film used in the film-coating process is a PE film, the waterproof agent is prepared by mixing resin, glyceryl stearate, paraffin, sodium hydroxide, oleic acid, tung oil and water according to the weight ratio of 5: 20: 1: 2: 0.1: 5: 200, the service condition temperature of the waterproof agent is 50 ℃, the thickness of the selected surface board layer 1 is 3mm, the thickness of the floor board layer 3 is 3mm, and the thickness of the obtained W-core corrugated core 2 is 20 mm;
in the fifth step, the waterproof agent prepared in the fourth step is uniformly sprayed on the surface of the semi-finished product W-core corrugated composite sandwich board by using spraying equipment, and then the sprayed semi-finished product W-core corrugated composite sandwich board is dried, so that the finished product vertical W-core corrugated composite sandwich board can be obtained, wherein the drying conditions are as follows: the drying temperature is 70 ℃, and the drying time is 30 min.
Example 2:
a preparation method of a vertical W-core corrugated composite sandwich board comprises the steps of firstly, laminating and gluing; step two, saw cutting to fix the thickness; step three, vertical lamination; step four, gluing the composite board; step five, spraying and drying;
in the first step, firstly, preparing a prepared density plate with the specification of 1180mm by 840mm, and then laminating and gluing prepared corrugated paper sheets along smooth surfaces to obtain a density mixed plate with the required thickness of 20 mm;
in the second step, a W-shaped shearing line required to be cut is drawn on the density mixing plate obtained in the second step, and then a cutting device is used for cutting to obtain a W-shaped core belt unit;
in the third step, gluing and widening the W-shaped core belt unit obtained in the second step along the smooth surface by using a clamp, and continuously pressing for 24 hours to obtain a finished W-shaped core belt;
in the fourth step, the surface of the W-shaped core belt obtained in the third step is planed to obtain a W-shaped density mixed board core layer, then a shielding film is used for shielding the required glue coating surface of the W-shaped density mixed board core layer, then a spraying device is used for uniformly spraying a waterproof agent on the surface of the W-shaped density mixed board core layer, after the spraying is completed, the shielding film shielded on the surface of the W-shaped density mixed board core layer is taken off, then the W-shaped density mixed board core layer is dried at 80 ℃ for 20min, then the surface of the W-shaped density mixed board core layer which is dried and cooled to room temperature and is not sprayed with the waterproof agent is coated with glue, and then the selected proper upper and lower surface plate non-coating film surfaces are respectively bonded on the W-shaped density mixed board core layer by the glue on the surface of the W-shaped density mixed board core layer, pressing for 24 hours to obtain a semi-finished W-shaped density mixed board composite sandwich board, wherein the film-coating surfaces of the upper and lower surface boards are subjected to film-coating treatment by using film-coating machines, the films used in the film-coating process are PE films, and the waterproof agent is prepared by mixing resin, glyceryl stearate, paraffin, sodium hydroxide, oleic acid, tung oil and water according to the weight ratio of 5: 20: 1: 2: 0.1: 5: 200, the using condition temperature of the waterproof agent is 50 ℃, the thicknesses of the upper and lower surface boards are 3mm, and the thickness of the W-shaped density mixed board core layer is 20 mm;
in the fifth step, the waterproof agent prepared in the fourth step is uniformly sprayed on the surface of the semi-finished product W-shaped density mixed board composite sandwich board by using spraying equipment, and then the sprayed semi-finished product W-shaped density mixed board composite sandwich board is dried, so that the finished product vertical W-shaped core corrugated composite sandwich board can be obtained, wherein the drying conditions are as follows: the drying temperature is 70 ℃, and the drying time is 30 min.
Example 3:
a preparation method of a vertical W-core corrugated composite sandwich board comprises the steps of firstly, laminating and gluing; step two, saw cutting to fix the thickness; step three, vertical lamination; step four, gluing the composite board; step five, spraying and drying;
in the first step, firstly, preparing a finished density plate, wherein the specification of the density plate is 1200mm × 2400mm, and then laminating and gluing prepared corrugated paper sheets along smooth surfaces to obtain a density mixed plate with the required thickness of 20 mm;
in the second step, a W-shaped shearing line required to be cut is drawn on the density mixing plate obtained in the second step, and then a cutting device is used for cutting to obtain a W-shaped core belt unit;
in the third step, gluing and widening the W-shaped core belt unit obtained in the second step along the smooth surface by using a clamp, and continuously pressing for 24 hours to obtain a finished W-shaped core belt;
in the fourth step, the surface of the W-shaped core belt obtained in the third step is planed to obtain a W-shaped density mixed board core layer, then a shielding film is used for shielding the required glue coating surface of the W-shaped density mixed board core layer, then a spraying device is used for uniformly spraying a waterproof agent on the surface of the W-shaped density mixed board core layer, after the spraying is completed, the shielding film shielded on the surface of the W-shaped density mixed board core layer is taken off, then the W-shaped density mixed board core layer is dried at 80 ℃ for 20min, then the surface of the W-shaped density mixed board core layer which is dried and cooled to room temperature and is not sprayed with the waterproof agent is coated with glue, and then the selected proper upper and lower surface plate non-coating film surfaces are respectively bonded on the W-shaped density mixed board core layer by the glue on the surface of the W-shaped density mixed board core layer, pressing for 24 hours to obtain a semi-finished W-shaped density mixed board composite sandwich board, wherein the film-coating surfaces of the upper and lower surface boards are subjected to film-coating treatment by using film-coating machines, the films used in the film-coating process are PE films, and the waterproof agent is prepared by mixing resin, glyceryl stearate, paraffin, sodium hydroxide, oleic acid, tung oil and water according to the weight ratio of 5: 20: 1: 2: 0.1: 5: 200, the using condition temperature of the waterproof agent is 50 ℃, the thicknesses of the upper and lower surface boards are 3mm, and the thickness of the W-shaped density mixed board core layer is 20 mm;
in the fifth step, the waterproof agent prepared in the fourth step is uniformly sprayed on the surface of the semi-finished product W-shaped density mixed board composite sandwich board by using spraying equipment, and then the sprayed semi-finished product W-shaped density mixed board composite sandwich board is dried, so that the finished product vertical W-shaped core corrugated composite sandwich board can be obtained, wherein the drying conditions are as follows: the drying temperature is 70 ℃, and the drying time is 30 min.
Based on the above, the invention utilizes the W-shaped structure core layer, so that the flat pressing resistance is greatly broken through, the application range is expanded, the material utilization rate is improved, the saving consciousness is advocated, compared with the traditional corrugated board, the corrugated board has the advantages that the structure with the two directions of V-shaped triangles has good stability and high reusability, the material is saved, the cost can be reduced, and the corrugated board is an environment-friendly material.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a compound battenboard of vertical W core area flute, includes table layer (1), W core area flute core layer (2) and floor layer (3), its characterized in that: and a surface plate layer (1) and a floor layer (3) are respectively bonded on two sides of the W-core corrugated core layer (2).
2. A preparation method of a vertical W-core corrugated composite sandwich board comprises the steps of firstly, laminating and gluing; step two, saw cutting to fix the thickness; step three, vertical lamination; step four, gluing the composite board; step five, spraying and drying; the method is characterized in that:
in the first step, prepared corrugated paper sheets are prepared at first, and then the prepared corrugated paper sheets are laminated and glued along smooth surfaces to obtain the corrugated board with the required thickness;
in the second step, a W-shaped cutting line required to be cut is drawn on the corrugated board obtained in the second step, and then a cutting device is used for cutting to obtain a W-shaped core belt unit;
in the third step, gluing and widening the W-shaped core belt unit obtained in the second step along the smooth surface by using a clamp, and continuously pressing for 24 hours to obtain a finished W-shaped core belt;
in the fourth step, the residual glue surface on the surface of the W-type core belt obtained in the third step is planed to obtain the corrugated core layer (2) of the W-type core belt, then the required glue surface of the corrugated core layer (2) of the W-type core belt is shielded by using a shielding film, then a waterproof agent is uniformly sprayed on the surface of the corrugated core layer (2) of the W-type core belt by using spraying equipment, after the spraying is finished, the shielding film shielded on the surface of the corrugated core layer (2) of the W-type core belt is taken down, then the corrugated core layer (2) of the W-type core belt is dried, the surface of the corrugated core layer (2) of the W-type core belt which is dried and cooled to room temperature is coated with glue, then the non-film-coated surfaces of the selected proper surface plate layer (1) and the floor layer (3) are respectively bonded on the corrugated core layer (2) of the W-type core belt by using the glue coated on the surface of the corrugated core layer (2) of the W-type core belt, pressing for 24 hours to obtain a semi-finished product W-core corrugated composite sandwich board, wherein the film coating surfaces of the surface board layer (1) and the floor board layer (3) are subjected to film coating treatment on the surface board layer (1) and the floor board layer (3) by a corrugated board film coating machine;
and in the fifth step, uniformly spraying the waterproof agent prepared in the fourth step on the surface of the semi-finished W-core corrugated composite sandwich board by using spraying equipment, and drying the sprayed semi-finished W-core corrugated composite sandwich board to obtain the finished vertical W-core corrugated composite sandwich board.
3. The method for preparing the vertical W-core corrugated composite sandwich board as claimed in claim 2, wherein: in the fourth step, the drying temperature is 80-90 ℃, and the drying time is 20-30 min.
4. The method for preparing the vertical W-core corrugated composite sandwich board as claimed in claim 2, wherein: in the fourth step, the film used in the film covering process is a PE film.
5. The method for preparing the vertical W-core corrugated composite sandwich board as claimed in claim 2, wherein: in the fourth step, the waterproof agent is prepared by mixing resin, glyceryl stearate, paraffin, sodium hydroxide, oleic acid, tung oil and water according to the weight ratio of 5: 20: 1: 2: 0.1: 5: 200.
6. The method for preparing the vertical W-core corrugated composite sandwich board as claimed in claim 2, wherein: in the fourth step, the thickness of the selected surface plate layer (1) is 1-5mm, the thickness of the floor layer (3) is 1-5mm, and the thickness of the corrugated core layer (2) of the obtained W-type core belt is 18-30 mm.
7. The method for preparing the vertical W-core corrugated composite sandwich board as claimed in claim 2, wherein: in the fifth step, the drying conditions are as follows: the drying temperature is 70-80 ℃, and the drying time is 30-40 min.
CN202110754885.4A 2021-07-05 2021-07-05 Vertical W-core corrugated composite sandwich board and preparation method thereof Pending CN113291031A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113774726A (en) * 2021-08-30 2021-12-10 中南林业科技大学 Thickening and edge sealing integrated self-folding paper-based sandwich board and forming process thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113774726A (en) * 2021-08-30 2021-12-10 中南林业科技大学 Thickening and edge sealing integrated self-folding paper-based sandwich board and forming process thereof

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