CN112792931A - Bamboo-wood composite board and manufacturing method and application thereof - Google Patents

Bamboo-wood composite board and manufacturing method and application thereof Download PDF

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Publication number
CN112792931A
CN112792931A CN201911015888.5A CN201911015888A CN112792931A CN 112792931 A CN112792931 A CN 112792931A CN 201911015888 A CN201911015888 A CN 201911015888A CN 112792931 A CN112792931 A CN 112792931A
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China
Prior art keywords
bamboo
wood
composite board
plywood
curtain
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Pending
Application number
CN201911015888.5A
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Chinese (zh)
Inventor
吴黄贵
俞艳
王正
王戈
俞先禄
肖卫红
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Fujian Heqizu Forestry Technology Co ltd
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Fujian Heqizu Forestry Technology Co ltd
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Application filed by Fujian Heqizu Forestry Technology Co ltd filed Critical Fujian Heqizu Forestry Technology Co ltd
Priority to CN201911015888.5A priority Critical patent/CN112792931A/en
Publication of CN112792931A publication Critical patent/CN112792931A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/06—Manufacture of central layers; Form of central layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34—Organic impregnating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/04—Combined bleaching or impregnating and drying of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K9/00—Chemical or physical treatment of reed, straw, or similar material
    • B27K9/002—Cane, bamboo
    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood 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
    • 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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B37/1284—Application of adhesive
    • 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
    • B32B7/08—Interconnection of layers by mechanical means
    • 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
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/042—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention belongs to the technical field of boards, and particularly relates to a bamboo-wood composite board and a manufacturing method and application thereof. The invention takes a wooden plywood as a core layer, and the upper side and the lower side of the core layer are covered with a plurality of layers of bamboo skin curtains and/or a plurality of layers of wooden veneers to form a bamboo-wood composite board blank; carrying out hot pressing on the composite board blank to obtain a substrate; and curing the substrate to obtain the bamboo-wood composite board. The invention uses low-density wood veneer to replace high-density bamboo wood to prepare the bamboo-wood composite board, reduces the density of the board, lightens the quality of the board, and further reduces the density (weight) and production cost of the product on the basis of maintaining and developing higher physical and mechanical properties of the bamboo wood by controlling the production process. The problems of heavy weight and high production cost of the plate are solved while the overall performance of the plate product is maintained.

Description

Bamboo-wood composite board and manufacturing method and application thereof
Technical Field
The invention belongs to the technical field of boards, and particularly relates to a bamboo-wood composite board and a manufacturing method and application thereof.
Background
The container bottom plate is one of the indispensable important parts in the manufacturing of container products, and has great demands at home and abroad. The traditional container bottom plate is made of high-density tropical hardwood veneer plywood, which causes serious damage to forest resources of tropical natural forests. With the decrease in high density tropical hardwood wood resources and the regulatory and banning of forest resources in tropical countries, such container flooring products, which are the major sources of tropical hardwood resources, are gradually exiting the container manufacturing market. From the end of the last century, the manufacturing technology of container bottom plates using bamboo as a main raw material gradually develops in China. However, the board prepared by using bamboo as the raw material has large density and heavy weight, and is inconvenient to load, unload and transport.
With the development of container industry in China, lightweight container products are provided, so that the requirement of transportation cost is further lowered. Meanwhile, the production cost of each part required by the container production also faces more and more pressure to be reduced. Therefore, for the container bottom plate manufacturing enterprises, how to further reduce the production cost of the container bottom plate and further realize the light weight of the container bottom plate has become one of the product upgrading targets of the container bottom plate manufacturing enterprises.
Disclosure of Invention
The invention aims to provide a manufacturing method of a low-density light bamboo-wood composite board and application thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a method for manufacturing a bamboo-wood composite board, which comprises the following steps:
(S1) providing wood plywood as a core layer;
(S2) providing a dried impregnated bamboo skin curtain and an impregnated wood veneer;
(S3) independently covering dry impregnated bamboo skin curtains or bamboo and wood composites on the upper side and the lower side of the core layer to form a composite board blank, wherein the bamboo and wood composites comprise laminated dry impregnated bamboo skin curtains and laminated glue-coated wood veneers;
(S4) carrying out hot-pressing on the composite board blank to obtain a substrate;
(S5) curing the base plate to obtain a bamboo-wood composite plate;
the density of the bamboo-wood composite board is 0.8-1.1 g/cm3；
The compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.2-1: 1.6;
the wood plywood comprises laminated wood veneers, and the number of the layers of the wood veneers is 5-10;
the thickness of the wood veneer is 10-20 mm;
in the step (S3), the number of layers of the dried impregnated bamboo split curtain is 10-20, and the number of layers of the impregnated wood veneer is 2-10;
the hot pressing adopts a cold-up-cold-down hot pressing process, the hot pressing temperature is 120-160 ℃, the hot pressing pressure is 2-4 MPa, and the hot pressing time is 1-1.5 min per millimeter of the bamboo-wood composite board according to the thickness of the bamboo-wood composite board.
Preferably, the wood veneer board source comprises one or more of eucalyptus, rubber wood, larch, masson pine, radiata pine and douglas fir.
Preferably, the method for manufacturing wood plywood comprises the following steps:
s11) drying the wood veneer until the water content is 5-10% to obtain a dried wood veneer;
s12) gluing the dried wood veneer to obtain a glued wood veneer;
s13) assembling the glued wood veneers in a forward superposition mode or a partial orthogonal superposition mode to form a wooden plywood blank;
s14) pre-pressing and shaping the wooden plywood blank to obtain a shaped wooden plywood blank;
s15) carrying out hot pressing on the shaped wood plywood blank to obtain wood plywood;
the number of layers of the wood veneers in the wooden plywood is 5-10.
Preferably, the thickness of the wood veneer is 0.8-3.0 mm.
Preferably, the pre-pressing pressure in the step S14) is 0.8-1.0 MPa, and the time for maintaining the pre-pressing pressure is 0.2-2 h; the hot pressing pressure in the step S15) is 1.0-1.8 MPa, the hot pressing temperature is 120-160 ℃, the hot pressing time is preferably 1-1.5 min per millimeter of the formed wooden plywood blank according to the thickness of the formed wooden plywood, and the adhesive for gluing in the step S12) is a thermosetting adhesive, wherein the thermosetting adhesive comprises phenolic resin adhesive and resorcinol formaldehyde adhesive.
Preferably, the manufacturing method of the dry impregnated bamboo split curtain comprises the following steps:
s21) drying the bamboo strip curtain until the water content is 5-12% to obtain a dried bamboo strip curtain;
s22) dipping the dried bamboo strip curtain with glue, taking out the bamboo strip curtain after 5-20 minutes of dipping with glue, and draining surface glue solution to obtain the dipped bamboo strip curtain;
s23) drying the dipped bamboo skin curtain to obtain a dried dipped bamboo skin curtain, wherein the drying temperature is 70-90 ℃, and the drying time is 20-30 min;
preferably, the adhesive for gum dipping in the step S22) is a phenolic adhesive, and the content of the solid phenolic resin in the adhesive is 25% to 40%.
The invention also provides a bamboo-wood composite board which comprises a core layer, a bottom layer and a surface layer, wherein the core layer is a wood plywood, and the bottom layer and the surface layer comprise a dried impregnated bamboo strip curtain or a bamboo-wood composite.
The invention also provides the bamboo-wood composite board prepared by the preparation method in the technical scheme or the application of the bamboo-wood composite board provided by the technical scheme as a container bottom board.
The invention provides a method for manufacturing a bamboo-wood composite board, which comprises the following steps: providing a wooden plywood, taking the wooden plywood as a core layer, and independently covering dry impregnated bamboo strip curtains or bamboo-wood composites on the upper side and the lower side of the core layer to form a composite board blank; carrying out hot pressing on the composite board blank to obtain a substrate; curing the substrate to obtain a bamboo-wood composite board; the density of the bamboo-wood composite board is 0.8-1.1 g/cm3(ii) a The compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.2-1: 1.6; the wood plywood comprises wood veneers which are overlaid in a forward direction or partially in an orthogonal direction, and the number of the wood veneers is 5-10; the thickness of the wood veneer is 10-20 mm; the number of layers of the dry impregnated bamboo skin curtain is 10-20, and the number of layers of the impregnated wood veneer is 2-10. The bamboo-wood composite board comprises a core layer, a bottom layer and a surface layer, wherein the core layer is a wood plywood, and the bottom layer is a wood plywoodAnd the surface layer comprises a dry impregnated bamboo skin curtain and a bamboo and wood composite. The invention uses low-density wood veneer to replace high-density bamboo wood to prepare the bamboo-wood composite board, reduces the density of the board, lightens the quality of the board, and further reduces the density (weight) and production cost of the product on the basis of maintaining and developing higher physical and mechanical properties of the bamboo wood by controlling the production process. The problems of heavy weight and high production cost of the plate are solved while the overall performance of the plate product is maintained.
Detailed Description
The invention provides a method for manufacturing a bamboo-wood composite board, which comprises the following steps:
(S1) providing wood plywood as a core layer;
(S2) providing a dried impregnated bamboo skin curtain and an impregnated wood veneer;
(S3) independently covering dry impregnated bamboo curtains or bamboo-wood composites on the upper side and the lower side of the core layer to form a composite board blank;
(S4) carrying out hot-pressing on the composite board blank to obtain a substrate;
(S5) curing the base plate to obtain a bamboo-wood composite plate;
the density of the bamboo-wood composite board is 0.8-1.1 g/cm3；
The compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.2-1: 1.6;
the wood plywood comprises laminated wood veneers, and the number of the layers of the wood veneers is 5-10;
the thickness of the wood veneer is 10-20 mm;
in the step (S3), the number of layers of the dried impregnated bamboo split curtain is 10-20, and the number of layers of the impregnated wood veneer is 2-10;
the hot pressing adopts a cold-up-cold-down hot pressing process, the hot pressing temperature is 120-160 ℃, the hot pressing pressure is 2-4 MPa, and the hot pressing time is 1-1.5 min per millimeter of the bamboo-wood composite board according to the thickness of the bamboo-wood composite board.
The invention provides a wooden plywood as a core layer; in the present invention, the wood plywood is preferably derived from artificial forest, and more preferably from one or more of eucalyptus, rubber wood, larch, masson pine, radiata pine and douglas fir, so as to reduce the processing cost.
The wood plywood comprises laminated wood veneers, wherein the number of the wood veneers is 5-10, and 6-8 is preferred; the thickness of the wooden plywood is 10-20 mm, and preferably 10-15 mm.
In the present invention, the method for manufacturing wood plywood preferably comprises the steps of:
s11) drying the wood veneer until the water content is 5-10% to obtain a dried wood veneer;
s12) gluing the dried wood veneer to obtain a glued wood veneer;
s13) assembling the glued wood veneers in a forward superposition mode or a partial orthogonal superposition mode to form a wooden plywood blank;
s14) pre-pressing and shaping the wooden plywood blank to obtain a shaped wooden plywood blank;
s15) carrying out hot pressing on the shaped wood plywood blank to obtain wood plywood;
the number of layers of the wood veneers in the wooden plywood is 5-10.
The invention has no special requirements on the drying mode and can reach the required water content.
According to the invention, the logs are preferably made into the wood veneers by rotary cutting, and the thickness of the wood veneers is preferably 0.8-3.0 mm, more preferably 1.0-2.0 mm, and even more preferably 1.5-1.8 mm.
After obtaining the dried wood veneer, the invention preferably applies glue on the dried wood veneer to obtain the glue-applied wood veneer. In the invention, the adhesive for gluing is preferably a thermosetting adhesive, and the thermosetting adhesive is preferably phenolic resin glue and resorcinol formaldehyde glue. The gluing amount for gluing is preferably 200-250 g/m2More preferably 205 to 230g/m2More preferably 210 to 220g/m2。
The glued wood veneers are preferably assembled in a forward stacking mode or a partial orthogonal stacking mode to form a wooden plywood blank; the forward direction refers to the direction along the wood veneer grains for superposition, and the orthogonal direction refers to the direction which is crossed by 90 degrees with the wood veneer grains for superposition. When the invention adopts partial orthogonal direction stacking, the method preferably adopts a mode of alternately stacking two sheets in the same direction and one transverse sheet, even one sheet in the same direction and one transverse sheet, thereby realizing reasonable distribution of mechanical properties of the sheet.
The invention preferably performs pre-pressing and shaping on the wooden plywood blank to obtain the shaped wooden plywood blank. In the invention, the pressure of the pre-pressing is preferably 0.8-1.0 MPa, more preferably 0.9MPa, and the time for holding the pressure of the pre-pressing is preferably 0.2-2 h, more preferably 0.5-1.3 h, more preferably 0.8-1.0 h; the invention strictly controls the prepressing pressure and the pressure maintaining time, thereby being beneficial to the prepressing to compact the wooden plywood plate blank and ensuring that the wooden plywood plate blank does not have the phenomenon of blank scattering.
After the shaped wood plywood blank is obtained, the invention preferably carries out hot pressing on the shaped wood plywood to obtain the wood plywood. In the invention, the hot pressing is preferably to load the wooden plywood blank into a hot press to be pressed into the wooden plywood; the hot pressing is preferably carried out in a hot-up and hot-down manner, so that the hot pressing time and the energy consumption are reduced. In the invention, the hot pressing pressure is preferably 1.0-1.8 MPa, more preferably 1.1-1.5 MPa, and the hot pressing temperature is preferably 120-160 ℃, more preferably 120-130 ℃. And the hot pressing time is preferably 1-1.5 min per millimeter of the formed wood plywood blank according to the thickness of the formed wood plywood. In the present invention, the wooden plywood is preferably trimmed to remove burrs as required and cut to a predetermined size for use.
According to the invention, dry impregnated bamboo curtains or bamboo-wood composites are independently covered on the upper side and the lower side of the core layer to form a composite board blank. In the invention, the thicknesses of the dry impregnated bamboo skin curtain or the bamboo-wood composite independently covered on the two sides of the core layer are preferably equal; the thickness ratio of the core layer to the single-side dried and dipped bamboo skin curtain or the bamboo-wood composite is preferably 1: 0.8-1.1, and more preferably 1: 0.8-0.9. In the invention, the bamboo-wood composite comprises a laminated dry impregnated bamboo skin curtain and a laminated glued wood veneer, wherein the number of layers of the bamboo skin curtain is 10-20, and the number of layers of the wood veneer is 2-10.
In the invention, the manufacturing method of the dry impregnated bamboo split curtain comprises the following steps:
s21) drying the bamboo strip curtain until the water content is 5-12% to obtain a dried bamboo strip curtain;
s22) dipping the dried bamboo strip curtain with glue, taking out the bamboo strip curtain after 5-20 minutes of dipping with glue, and draining surface glue solution to obtain the dipped bamboo strip curtain;
s23) drying the dipped bamboo skin curtain to obtain a dried dipped bamboo skin curtain, wherein the drying temperature is 70-90 ℃, and the drying time is 20-30 min;
the invention has no special requirement on the source of the bamboo skin curtain; the invention preferably breaks bamboo, splits bamboo strips and weaves the curtain to obtain the bamboo strip curtain. According to the invention, the bamboo skin curtain is preferably dried until the water content is 5-12% to obtain the dried bamboo skin curtain, so that the processing energy consumption is reduced, and the phenomena of bubbling and layering during subsequent processing are avoided. The invention has no special requirements on the drying mode and can reach the required water content.
After the dry bamboo skin curtain is obtained, the dry bamboo skin curtain is preferably dipped in glue for 5-20 minutes, the bamboo skin curtain is taken out, and surface glue is drained to obtain the dipped bamboo skin curtain. In the invention, the dipping amount of the dipping is preferably 0.30-0.60kg per bamboo skin curtain. In the invention, the adhesive for gum dipping is preferably a phenolic adhesive, and the content of the solid phenolic resin in the adhesive is preferably 25 wt.% to 40 wt.%, more preferably 28 wt.% to 35 wt.%, and even more preferably 30 wt.%.
In the invention, the surface glue solution is preferably drained by taking the bamboo skin curtain out of the glue dipping tank and standing on a glue draining table, and the glue solution on the surface of the bamboo skin curtain flows into the glue collecting tank along the bamboo curtain and flows back into the glue tank until no glue solution flows out again.
The invention preferentially dries the dipped bamboo skin curtain to obtain the dried dipped bamboo skin curtain. In the invention, the drying temperature is preferably 70-90 ℃, and more preferably 70-75 ℃; the drying time is preferably 20 to 30min, and more preferably 20 to 25 min. The impregnated bamboo skin curtain is preferably dried in a mesh belt type dryer so as to ensure the quality of the bamboo-wood composite board during hot pressing and avoid the problems of bubbling, infirm gluing and the like caused by too high water content of the bamboo curtain.
After the dry impregnated bamboo strip curtain is obtained, the dry impregnated bamboo strip curtain is preferably paved on the upper side and the lower side of the wooden plywood in a forward superposition or partial orthogonal superposition mode to form a composite board blank.
After the composite board blank is obtained, the invention carries out hot pressing on the composite board blank to obtain the substrate. In the present invention, the hot pressing process in step (S3) preferably adopts a cold-on-cold-off manner, and the hot pressing pressure is preferably 2 to 4MPa, more preferably 2 to 3.2MPa, and still more preferably 3.1 MPa. The hot pressing temperature is preferably 120-160 ℃, more preferably 130-140 ℃, and more preferably 145-155 ℃; and the hot pressing time is preferably 1-1.5 minutes per millimeter of the bamboo-wood composite board.
After the base plate is obtained, the base plate is subjected to curing to obtain the bamboo-wood composite plate. In the invention, the base plates are preferably placed in a curing warehouse for curing, and stacked and stored under the condition of normal temperature and light shielding, so that the moisture content of the base plates and the moisture content in the air are balanced, the strength of the base plates is ensured, and the base plates are not deformed. The time for storing the stacks is preferably 10-15 days, more preferably 12-14 days, and even more preferably 14 days. In the invention, the bamboo-wood composite board is preferably cut into a specified size according to requirements and stored in a warehouse.
In the invention, the uppermost layer of the surface layer of the bamboo-wood composite board is preferably a bamboo skin curtain layer, and the lowermost layer of the bottom layer of the bamboo-wood composite board is preferably a bamboo skin curtain layer, so as to resist external pressure and impact force and ensure the mechanical property of the bamboo-wood composite board; the core layer of the bamboo-wood composite board is preferably made of wood with low density and good rigidity so as to resist external bending force, the mechanical property of the composite board is ensured, and the density and the weight of the board are reduced, so that the transportation cost is reduced.
The invention also provides a bamboo-wood composite board, which comprises a core layer, a bottom layer and a surface layer, wherein the core layer is a wood plywood, the bottom layer and the surface layer are dry impregnated bamboo skin curtains or bamboo-wood composites, and the bamboo-wood composites comprise laminated dry impregnated bamboo skin curtains and laminated glue-coated wood veneers. The thicknesses of the dried impregnated bamboo skin curtains or bamboo wood composites of the bottom layer and the surface layer are preferably equal; the thickness ratio of the core layer to the single-side dried and dipped bamboo skin curtain or the bamboo-wood composite is preferably 1: 0.8-1.1, and more preferably 1: 0.8-0.9. In the invention, the bamboo-wood composite board is prepared according to the manufacturing method of the technical scheme.
According to the invention, a wood plywood is preferably used as a core layer, radial or chordwise multilayer dry impregnated bamboo skin curtains or bamboo-wood composites are paved on the upper side and the lower side of the wood plywood, and the bamboo-wood composite board is formed through hot pressing; the bamboo-wood composite board has low density and light weight.
The invention also provides the bamboo-wood composite board prepared by the preparation method in the technical scheme or the application of the bamboo-wood composite board provided by the technical scheme as a container bottom board.
The bottom surface and the upper surface of the bamboo-wood composite board are preferably paved with the decorative layers according to the process requirements, the bamboo-wood composite board is applied to container bottom boards in different use environments, and the decorative layers are preferably one or more of impregnated paper, bamboo mats and whole wood veneers.
In order to further illustrate the present invention, the following examples are given to describe the bamboo-wood composite board and the method for making the same and the application thereof in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
The bamboo-wood composite board is manufactured according to the following process.
Manufacturing of wood plywood:
firstly, the rubber wood log is cut into a wood veneer by rotary cutting. The thickness of the wood veneer is 1.7 mm.
Secondly, drying the wood veneer until the water content is 6-8% to obtain the dried wood veneer.
Thirdly, gluing the dried wood veneer through a gluing machine to obtain the glued wood veneer. The adhesive used for gluing is phenolic resin adhesive.
And fourthly, assembling the glued wood veneers in a forward stacking or partial orthogonal stacking mode to form wood plywood blanks. The assembly pavement amount is controlled according to the compression ratio of 1:1.2-1.5, and the finished plate thickness is 8-10 mm.
Putting the wooden plywood blank into a prepressing machine at room temperature for prepressing to obtain the shaped wooden plywood blank, wherein the prepressing pressure of the board surface is 1.0MPa, and keeping for 0.5 hour.
Sixthly, putting the pre-pressed and shaped plate blank into a hot press to press by adopting a hot-up and hot-down hot pressing process to obtain the wooden plywood. Hot pressing temperature: 130 ℃, hot pressing time: 1.5 minutes per mm of plywood thickness.
Seventhly, cutting the wooden plywood according to the requirement to remove rough edges for later use.
Manufacture of bamboo-wood composite board
Firstly, the bamboo is formed into a bamboo skin curtain by breaking bamboo, breaking bamboo skin and weaving the curtain. The thickness of the thin bamboo strips is 2.0 mm.
Secondly, the bamboo skin curtain is put into a drying kiln to be dried at the temperature of 90-120 ℃ so that the water content of the bamboo skin curtain is reduced to below 10 percent, and the dried bamboo skin curtain is obtained.
And thirdly, putting the dried bamboo strip curtain into a glue pool filled with 30% phenolic aldehyde adhesive for glue dipping, taking out the bamboo strip curtain after the glue dipping is carried out for 5 minutes, putting the bamboo strip curtain on a glue dripping table, and draining surface glue solution at normal temperature to obtain the glued bamboo strip curtain.
And fourthly, putting the dipped bamboo strip curtain into a mesh belt type dryer for secondary drying treatment to obtain the dry dipped bamboo strip curtain. The drying temperature was 75 ℃ and the drying time was 25 minutes.
Fifthly, independently paving the dry impregnated bamboo skin curtains on the upper side and the lower side of the wood plywood in a forward superposition mode or a partial orthogonal superposition mode to form a composite board blank. The assembly pavement amount is 0.85g/cm according to the board density3And (5) controlling.
Sixthly, hot pressing the composite board blank in a cold-up-and-down mode to obtain the substrate. The hot pressing temperature is 140 ℃; hot pressing pressure: 4 MPa; hot pressing time: the thickness of the bamboo-wood composite board is 1.5 minutes per millimeter, and the compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.3-1.5.
And seventhly, placing the base plates into a curing warehouse, stacking and storing for 15 days under the condition of normal temperature and light shielding so as to balance the water content of the base plates and the water content in the air, and obtaining the bamboo-wood composite plate.
Cutting the bamboo-wood composite board into the specified size according to the requirements.
Ninthly, storing the cut container bottom plate in a warehouse.
Example 2
The method for preparing the bamboo-wood composite board in the embodiment 1 is adopted, except that the glue solution concentration is increased to more than 40% when the glue solution is dipped, and the water absorption thickness expansion rate of the pressed board can be reduced by about 10%. The water absorption thickness expansion rate of the plate is one of important indexes of the physical and mechanical properties of the plate. The invention improves the concentration of the glue solution, thickens the solidified glue layer on the surface, is beneficial to resisting the entrance of moisture, reduces the expansion of the water absorption thickness of the plate during the test, and improves the capability of the plate in resisting a high-humidity environment.
Example 3
When the bamboo-wood composite plate blank is paved in the embodiment 1, gum dipping decorative paper and the whole wood veneer are additionally paved on the outermost layer of the bottom surface layer; or the outermost layer of the bottom surface layer is paved with the impregnated bamboo mat, and then the bamboo and wood composite board with decorative and reinforced protection effects is obtained by pressing the board, so that the use requirements of the container bottom board in different use environments are met.
Example 4
The bamboo-wood composite board is manufactured according to the following process.
Manufacturing of wood plywood:
firstly, the log of the radiata pine or the douglas fir is made into a wood veneer by rotary cutting. The thickness of the wood veneer is 2.5 mm.
Secondly, drying the wood veneer until the moisture content is 6-8% to obtain the dried wood veneer.
Thirdly, gluing the dried wood veneer through a gluing machine to obtain the glued wood veneer. The adhesive used for gluing is phenolic resin adhesive.
And fourthly, assembling the glued wood veneers in a forward stacking or partial orthogonal stacking mode to form wood plywood blanks. The assembly laying amount is controlled by the compression ratio of 1:1.3 and the thickness of the finished plate is 10-15 mm.
Putting the wooden plywood blank into a prepressing machine at room temperature for prepressing to obtain the shaped wooden plywood blank, and keeping the plate surface prepressing pressure at 1.0MPa for 0.5 hour.
Sixthly, putting the pre-pressed and shaped plate blank into a hot press to press by adopting a hot-up and hot-down hot pressing process to obtain the wooden plywood. Hot pressing temperature: 140 ℃, hot pressing time: the thickness of the bamboo-wood composite board is 1.5 minutes per millimeter.
Seventhly, cutting the wooden plywood according to the requirement to remove rough edges for later use.
Manufacture of bamboo-wood composite board
Firstly, the bamboo is formed into a bamboo skin curtain by breaking bamboo, breaking bamboo skin and weaving the curtain. The thickness of the thin bamboo strips is 2.0 mm.
Secondly, the bamboo skin curtain is placed into a drying kiln to be dried at the temperature of 100 ℃ and 120 ℃ so that the water content of the bamboo skin curtain is reduced to below 8 percent, and the dried bamboo skin curtain is obtained.
And thirdly, putting the dried bamboo strip curtain into a glue pool filled with 28% phenolic aldehyde adhesive for glue dipping, taking out the bamboo strip curtain after the glue dipping is carried out for 5 minutes, putting the bamboo strip curtain on a glue draining table, and draining surface glue solution at normal temperature to obtain the glued bamboo strip curtain.
And fourthly, putting the dipped bamboo strip curtain into a mesh belt type dryer for secondary drying treatment to obtain the dry dipped bamboo strip curtain. The drying temperature was 70 ℃ and the drying time was 25 minutes.
Fifthly, independently paving the upper side and the lower side of the wooden plywood by the dried impregnated bamboo skin curtain and the glued radial pine veneer in a forward superposition mode or a partial orthogonal superposition mode to form a composite board blank. The assembly pavement amount is 0.84g/cm according to the board density3And (5) controlling.
Sixthly, hot pressing the composite board blank in a cold-up-and-down mode to obtain the substrate. The hot pressing temperature is 140 ℃; hot pressing pressure: 3 MPa; hot pressing time: the thickness of the bamboo-wood composite board is 1.5 minutes per millimeter, and the compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.5.
And seventhly, placing the base plates into a curing warehouse, stacking and storing for 15 days under the condition of normal temperature and light shielding so as to balance the water content of the base plates and the water content in the air, and obtaining the bamboo-wood composite plate.
Cutting the bamboo-wood composite board into the specified size according to the requirements.
Ninthly, storing the cut container bottom plate in a warehouse.
Example 5
Manufacturing of wood plywood:
firstly, the eucalyptus log is cut into a wood veneer by rotary cutting. The thickness of the wood veneer is 2.2 mm.
Secondly, drying the wood veneer until the moisture content is 6-8% to obtain the dried wood veneer.
Thirdly, gluing the dried wood veneer through a gluing machine to obtain the glued wood veneer. The adhesive used for gluing is phenolic resin adhesive.
And fourthly, assembling the glued wood veneers in a forward stacking or partial orthogonal stacking mode to form wood plywood blanks. The assembly laying amount is controlled by the compression ratio of 1:1.35 and the thickness of the finished plate is 10-15 mm.
Putting the wooden plywood blank into a prepressing machine at room temperature for prepressing to obtain the shaped wooden plywood blank, and keeping the plate surface prepressing pressure at 1.0MPa for 0.5 hour.
Sixthly, putting the pre-pressed and shaped plate blank into a hot press to press by adopting a hot-up and hot-down hot pressing process to obtain the wooden plywood. Hot pressing temperature: 140 ℃, hot pressing time: the thickness of the bamboo-wood composite board is 1.5 minutes per millimeter.
Seventhly, cutting the wooden plywood according to the requirement to remove rough edges for later use.
Manufacture of bamboo-wood composite board
Firstly, the bamboo is formed into a bamboo skin curtain by breaking bamboo, breaking bamboo skin and weaving the curtain. The thickness of the thin bamboo strips is 2.0 mm.
Secondly, the bamboo skin curtain is placed into a drying kiln to be dried at the temperature of 100 ℃ and 120 ℃ so that the water content of the bamboo skin curtain is reduced to below 8 percent, and the dried bamboo skin curtain is obtained.
And thirdly, putting the dried bamboo strip curtain into a glue pool filled with 28% phenolic aldehyde adhesive for glue dipping, taking out the bamboo strip curtain after the glue dipping is carried out for 5 minutes, putting the bamboo strip curtain on a glue draining table, and draining surface glue solution at normal temperature to obtain the glued bamboo strip curtain.
And fourthly, putting the dipped bamboo strip curtain into a mesh belt type dryer for secondary drying treatment to obtain the dry dipped bamboo strip curtain. The drying temperature was 70 ℃ and the drying time was 25 minutes.
Fifthly, independently paving the upper side and the lower side of the wooden plywood by the dried impregnated bamboo skin curtain and the glued radial pine veneer in a forward superposition mode or a partial orthogonal superposition mode to form a composite board blank. The assembly pavement amount is 0.82g/cm according to the board density3And (5) controlling.
Sixthly, hot pressing the composite board blank in a cold-up-and-down mode to obtain the substrate. The hot pressing temperature is 140 ℃; hot pressing pressure: 3.2 MPa; hot pressing time: the thickness of the bamboo-wood composite board per millimeter is 1.2 minutes, and the compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.35.
And seventhly, placing the base plates into a curing warehouse, stacking and storing for 15 days under the condition of normal temperature and light shielding so as to balance the water content of the base plates and the water content in the air, and obtaining the bamboo-wood composite plate.
Cutting the bamboo-wood composite board into the specified size according to the requirements.
Ninthly, storing the cut container bottom plate in a warehouse.
Example 6
Manufacturing of wood plywood:
firstly, rotary cutting raw wood of Chinese red pine or larch to prepare a wood veneer. The thickness of the wood veneer is 2.0 mm.
Secondly, drying the wood veneer until the moisture content is 6-8% to obtain the dried wood veneer.
Thirdly, gluing the dried wood veneer through a gluing machine to obtain the glued wood veneer. The adhesive used for gluing is phenolic resin adhesive.
And fourthly, assembling the glued wood veneers in a forward stacking or partial orthogonal stacking mode to form wood plywood blanks. The assembly laying amount is controlled by the compression ratio of 1:1.33 and the thickness of the finished plate is 10-15 mm.
Putting the wooden plywood blank into a prepressing machine at room temperature for prepressing to obtain the shaped wooden plywood blank, and keeping the plate surface prepressing pressure at 0.9MPa for 0.5 hour.
Sixthly, putting the pre-pressed and shaped plate blank into a hot press to press by adopting a hot-up and hot-down hot pressing process to obtain the wooden plywood. Hot pressing temperature: 140 ℃, hot pressing time: the thickness of the bamboo-wood composite board is 1.5 minutes per millimeter.
Seventhly, cutting the wooden plywood according to the requirement to remove rough edges for later use.
Manufacture of bamboo-wood composite board
Firstly, the bamboo is formed into a bamboo skin curtain by breaking bamboo, breaking bamboo skin and weaving the curtain. The thickness of the thin bamboo strips is 2.0 mm.
Secondly, the bamboo skin curtain is placed into a drying kiln to be dried at the temperature of 100 ℃ and 120 ℃ so that the water content of the bamboo skin curtain is reduced to below 8 percent, and the dried bamboo skin curtain is obtained.
And thirdly, putting the dried bamboo strip curtain into a glue pool filled with 28% phenolic aldehyde adhesive for glue dipping, taking out the bamboo strip curtain after the glue dipping is carried out for 5 minutes, putting the bamboo strip curtain on a glue draining table, and draining surface glue solution at normal temperature to obtain the glued bamboo strip curtain.
And fourthly, putting the dipped bamboo strip curtain into a mesh belt type dryer for secondary drying treatment to obtain the dry dipped bamboo strip curtain. The drying temperature was 70 ℃ and the drying time was 25 minutes.
Fifthly, independently paving the upper side and the lower side of the wooden plywood by the dried impregnated bamboo skin curtain and the glued radial pine veneer in a forward superposition mode or a partial orthogonal superposition mode to form a composite board blank. The assembly pavement amount is 0.80g/cm according to the board density3And (5) controlling.
Sixthly, hot pressing the composite board blank in a cold-up-and-down mode to obtain the substrate. The hot pressing temperature is 140 ℃; hot pressing pressure: 3.1 MPa; hot pressing time: the thickness of the bamboo-wood composite board per millimeter is 1.2 minutes, and the compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.30.
And seventhly, placing the base plates into a curing warehouse, stacking and storing for 15 days under the condition of normal temperature and light shielding so as to balance the water content of the base plates and the water content in the air, and obtaining the bamboo-wood composite plate.
Cutting the bamboo-wood composite board into the specified size according to the requirements.
Ninthly, storing the cut container bottom plate in a warehouse.
The bamboo-wood composite boards obtained in examples 1-6 are detected according to an experimental method of the national group standard of T/CSF 009-.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.

Claims (10)

1. A method for manufacturing a bamboo-wood composite board comprises the following steps:
(S1) providing wood plywood as a core layer;
(S2) providing a dried impregnated bamboo skin curtain and an impregnated wood veneer;
(S3) independently covering dry impregnated bamboo skin curtains or bamboo and wood composites on the upper side and the lower side of the core layer to form a composite board blank, wherein the bamboo and wood composites comprise laminated dry impregnated bamboo skin curtains and laminated glue-coated wood veneers;
(S4) carrying out hot-pressing on the composite board blank to obtain a substrate;
(S5) curing the base plate to obtain a bamboo-wood composite plate;
the density of the bamboo-wood composite board is 0.8-1.1 g/cm3；
The compression ratio of the bamboo-wood composite board to the composite board blank is 1: 1.2-1: 1.6;
the wood plywood comprises laminated wood veneers, and the number of the layers of the wood veneers is 5-10;
the thickness of the wood veneer is 10-20 mm;
in the step (S3), the number of layers of the dried impregnated bamboo split curtain is 10-20, and the number of layers of the impregnated wood veneer is 2-10;
the hot pressing adopts a cold-up-cold-down hot pressing process, the hot pressing temperature is 120-160 ℃, the hot pressing pressure is 2-4 MPa, and the hot pressing time is 1-1.5 min per millimeter of the bamboo-wood composite board according to the thickness of the bamboo-wood composite board.
2. The method of claim 1, wherein the source of wood plywood sheet material comprises one or more of eucalyptus, rubber wood, larch, masson pine, radiata pine, and douglas fir.
3. The method of manufacturing of claim 1, wherein the method of manufacturing wood plywood comprises the steps of:
s11) drying the wood veneer until the water content is 5-10% to obtain a dried wood veneer;
s12) gluing the dried wood veneer to obtain a glued wood veneer;
s13) assembling the glued wood veneers in a forward superposition mode or a partial orthogonal superposition mode to form a wooden plywood blank;
s14) pre-pressing and shaping the wooden plywood blank to obtain a shaped wooden plywood blank;
s15) carrying out hot pressing on the shaped wood plywood blank to obtain wood plywood;
the number of layers of the wood veneers in the wooden plywood is 5-10.
4. The method according to claim 3, wherein the thickness of the wood veneer is 0.8 to 3.0 mm.
5. The method according to claim 3, wherein the pre-pressing pressure in step S14) is 0.8 to 1.0MPa, and the time for maintaining the pre-pressing pressure is 0.2 to 2 hours; and in the step S15), the hot pressing pressure is 1.0-1.8 MPa, the hot pressing temperature is 120-160 ℃, and the hot pressing time is 1-1.5 min per millimeter of the wood plywood according to the thickness of the wood plywood.
6. The manufacturing method according to claim 3, wherein the adhesive for gluing in step S12) is a thermosetting adhesive, and the thermosetting adhesive comprises phenolic resin glue and resorcinol formaldehyde glue.
7. The manufacturing method of claim 1, wherein the manufacturing method of the dry dipped bamboo skin curtain comprises the following steps:
s21) drying the bamboo strip curtain until the water content is 5-12% to obtain a dried bamboo strip curtain;
s22) dipping the dried bamboo strip curtain with glue, taking out the bamboo strip curtain after 5-20 minutes of dipping with glue, and draining surface glue solution to obtain the dipped bamboo strip curtain;
s23) drying the dipped bamboo skin curtain to obtain a dried dipped bamboo skin curtain, wherein the drying temperature is 70-90 ℃, and the drying time is 20-30 min.
8. The method as claimed in claim 7, wherein the glue dipping glue in the step S22) is a phenolic glue, and the content of solid phenolic resin in the glue is 25-40%.
9. The bamboo-wood composite board is characterized by comprising a core layer, a bottom layer and a surface layer, wherein the core layer is a wood plywood, and the bottom layer and the surface layer comprise a dry impregnated bamboo strip curtain or a bamboo-wood composite.
10. Use of a bamboo-wood composite board obtained by the manufacturing method according to any one of claims 1 to 8 or a bamboo-wood composite board according to claim 9 as a container floor.
CN201911015888.5A 2019-10-24 2019-10-24 Bamboo-wood composite board and manufacturing method and application thereof Pending CN112792931A (en)

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