CN108501478A - A kind of compound laminated veneer lumber of high intensity eucalyptus poplar and its manufacturing method - Google Patents

A kind of compound laminated veneer lumber of high intensity eucalyptus poplar and its manufacturing method Download PDF

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Publication number
CN108501478A
CN108501478A CN201810534927.1A CN201810534927A CN108501478A CN 108501478 A CN108501478 A CN 108501478A CN 201810534927 A CN201810534927 A CN 201810534927A CN 108501478 A CN108501478 A CN 108501478A
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China
Prior art keywords
veneer
eucalyptus
poplar
board
steel plate
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CN201810534927.1A
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Chinese (zh)
Inventor
关明杰
张媛
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Nanjing Forestry University
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Nanjing Forestry University
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Priority to CN201810534927.1A priority Critical patent/CN108501478A/en
Publication of CN108501478A publication Critical patent/CN108501478A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27DWORKING VENEER OR PLYWOOD
    • B27D1/00Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/04Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10Layered products comprising a layer of metal comprising metal 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/18Layered products comprising a layer of metal comprising iron or steel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/20Layered products comprising a layer of metal comprising aluminium or copper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04Layered 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
    • B32B21/042Layered 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 of wood
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10Methods 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284Application of adhesive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/0004Cutting, tearing or severing, e.g. bursting; Cutter details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/16Drying; Softening; Cleaning
    • B32B38/164Drying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties

Abstract

The invention discloses a kind of application fields of the fast growing woods such as raising poplar, Eucalyptus, improve the performance of common laminated veneer lumber, with better intensity and the preparation method of the less compound laminated veneer lumber of eucalyptus poplar of burst size of methanal.Its structure is formed by board using poplar board, Eucalyptus veneer and stainless steel plate or aluminium sheet stacking gluing, its processing step is that 1) willow and eucalyptus rounding are dried at plate veneer unit, then to veneer;2) flour: water: lignin=1.0: the back side crack of the closing slurry finishing veneer of 4.0: 0.5 ratios is used;3) staggeredly assembly is imposed after structure phenolic resin between veneer and veneer and carries out hot pressing;4) assembly after structure epoxy resin or enclosed type urethane resin is imposed between veneer and stainless steel plate or aluminium sheet and is cold-pressed.The present invention improves the intensity of laminated veneer lumber by the humidification of stainless steel plate or aluminium sheet, improves the dimensional stability of laminated veneer lumber, widens the application field of laminated veneer lumber.

Description

A kind of compound laminated veneer lumber of high intensity eucalyptus poplar and its manufacturing method
Technology neighborhood
The present invention relates to a kind of high intensity laminated veneer lumber and its manufacturing methods, belong to wood-based plate manufacturing technology field.
Technical background
Timber is widely used in the various fields such as building, bridge, traffic, industry, agricultural.But the forest in China provides Source is relatively deficient, and the forest reserves that the world possesses per capita is 71.8 cubic metres, and forest reserves is only 8.6 vertical per capita for China Square rice.With the fast development of Building Trade in China, China's building timber amount is increasing sharply and growth trend year by year is presented, and supplies Contradiction is needed also to become increasingly conspicuous, however the resource relative abundance of the artificial fast-growing woods in China.But due to the fast growing wood in artificial forest Growth cycle is short, material diameter is smaller, and it is strong that the fast growing woods such as poplar, Eucalyptus, China fir all have loose material, poor dimensional stability, mechanics Low disadvantage is spent, it is also apt to rot under wet heat condition.In addition, the growth defects such as knot, crackle, insect pest are to structure material in timber Be affected, seriously limit the application range of timber in engineering materials.
The laminated veneer lumber (LVL) occurred currently on the market is rotary-cut or slicing using small dimension wood or brush wood as raw material At veneer, rift grain assembly, gluing, hot-forming artificial board.Most common laminated veneer lumber is mostly by board using poplar board system At also useful China fir or Eucalyptus make.But Eucalyptus is there are the material disadvantage of itself, the laminated veneer lumber of production have compared with Big buckling deformation, so seldom using Eucalyptus Greenwood veneer laminated timber in reality produces.
The Chinese invention patent application of Publication No. CN101774190A discloses a kind of carbon fiber fabric reinforced poplar veneer Laminated timber structural elements and its processing method are formed by board using poplar board and carbon cloth intersecting gluing, have given full play to carbon The advantages of fiber cloth and meaning poplar laminated veneer lumber, the application range of meaning poplar is widened.
The Chinese invention patent application of publication number CN103481337A discloses a kind of glass fiber reinforcement board using poplar board layer Laminated timber is made through adhesive stacking bonding by board using poplar board, between the board using poplar board of laminated timber in product material and its production method Layer of glass cloth is added.The invention using poplar as raw material, glass fabric Wei reinforcing material, using be laminated it is compound by the way of A kind of glass fabric enhancing poplar laminated veneer lumber is produced, there is high-intensity performance.
The Chinese invention patent application of publication number CN104191471A disclose a kind of high intensity poplar laminated veneer lumber and its Manufacturing method stacks gradually gluing by board using poplar board and glass fabric and carbon cloth and forms, and glass fabric is in carbon fiber Cloth upper layer, dash board and bottom plate are board using poplar board.The invention improves laminated veneer lumber by the effect of two kinds of fibre reinforced materials The intensity of material, improves weatherability and dimensional stability.
However, being there is no at present using stainless steel plate or the compound laminated veneer lumber of aluminium sheet enhancing eucalyptus poplar and by changing assembly side Formula obtains the compound laminated veneer lumber of eucalyptus poplar of higher intensity and its technology of manufacturing method discloses.And it there is no using flour and wood The slurry finishing knife check of quality mixing discloses to reduce the technology of the manufacturing method of resin added.
Invention content
In order to obtain eucalyptus poplar composite bed accumulation of the laminated veneer lumber than producing now with higher intensity, less resin added Material, the present invention provides a kind of high intensity eucalyptus poplar composite bed accumulation material and its manufacturing methods, are enhanced using stainless steel plate or aluminium sheet The compound laminated veneer lumber of eucalyptus poplar is simultaneously applied using the slurry of flour and lignin mixing to modify knife check to reach reduction The purpose of glue amount.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
1. a kind of compound laminated veneer lumber of high intensity eucalyptus poplar, it is characterised in that:The eucalyptus poplar composite bed accumulation material is by poplar list Plate and Eucalyptus veneer and stainless steel plate or aluminium sheet are Component units, wherein the board using poplar board thickness is 2.5~10.0mm, it is wide Degree is 100.0~150.0cm, and length is 100.0~150.0cm, and Eucalyptus veneer thickness is 6.0~10.0mm, and width is 100.0~150.0cm, length are 100.0~150.0cm;The stainless steel plate or aluminium plate thickness are 0.8~3.0mm;It will be above-mentioned Staggeredly assembly is pressed into the compound veneer layer of high intensity eucalyptus poplar in order for board using poplar board and Eucalyptus veneer and stainless steel plate or aluminium sheet Product material.
2. a kind of compound laminated veneer lumber of high intensity eucalyptus poplar, it is characterised in that:Structure phenol is imposed between adjacent veneer Urea formaldehyde, molecular weight are 800~1000, and veneer glue application amount is 150~250g/m2, between veneer and stainless steel plate or aluminium sheet Structure epoxy resin or enclosed type urethane resin are imposed, resin added is 180~300g/m2
3. a kind of compound laminated veneer lumber of high intensity eucalyptus poplar, it is characterised in that:Poplar and Eucalyptus veneer and stainless Steel plate or aluminium sheet are with 5~7 layers for one group, and staggeredly assembly includes at the slab that thickness is 150.0~300.0mm, assembly type Following several types:1) with 5 laminates for one group, adjacent layer is respectively board using poplar board and Eucalyptus veneer, and adjacent veneer is mutually perpendicular to It places, 1 layer of stainless steel plate or aluminium sheet is added between group and group;2) with 5 laminates be one group, from top to bottom respectively board using poplar board, Eucalyptus veneer, stainless steel plate or aluminium sheet, Eucalyptus veneer, board using poplar board, adjacent veneer are mutually perpendicular to assembly, between group and group directly It is glued;3) with 6 laminates for one group, from top to bottom respectively Eucalyptus veneer, Eucalyptus veneer, stainless steel plate or aluminium sheet, stainless steel plate Or aluminium sheet, board using poplar board, board using poplar board, rift grain direction assembly is pressed between veneer, is directly glued between group and group;4) with 6 laminates It is one group, from top to bottom respectively Eucalyptus veneer, stainless steel plate or aluminium sheet, Eucalyptus veneer, board using poplar board, stainless steel plate or aluminium Plate, board using poplar board press rift grain direction assembly between veneer, and one layer of stainless steel plate or aluminium sheet are added between group and group;5) with 7 laminates It is one group, from top to bottom respectively stainless steel plate or aluminium sheet, board using poplar board, Eucalyptus veneer, board using poplar board, Eucalyptus veneer, poplar Veneer, stainless steel plate or aluminium sheet are pressed rift grain direction assembly between veneer, are directly glued between group and group;6) with 7 laminates for one Group, from top to bottom respectively board using poplar board, stainless steel plate or aluminium sheet, Eucalyptus veneer, board using poplar board, Eucalyptus veneer, stainless steel plate Or aluminium sheet, board using poplar board, rift grain direction assembly is pressed between veneer, and 1 layer of stainless steel plate or aluminium sheet are added between group and group.
4. a kind of compound laminated veneer lumber of high intensity eucalyptus poplar, it is characterised in that:The laminated veneer lumber of compression moulding is Large format it is rectangular.
5. a kind of preparation method of the compound laminated veneer lumber of high intensity eucalyptus poplar, feature includes processing step:
1) rounding or slicing process:By willow log, rotary-cut or slicing at thickness are 2.5~10.0mm after processing, Width be 100.0~150.0cm, length be 100.0~150.0cm, by eucalyptus log after processing rotary-cut or slicing at thickness For 6.0~10.0mm, width is 100.0~150.0cm, and length is 130.0~250.0cm;
2) veneer drying process:Dry the veneers to moisture content 8~15%;
3) knife check process is eliminated:Smear one in the fissare part of poplar and Eucalyptus loose side after the drying Layer closing slurry, makes veneer surfacing;
4) coating process:Structure phenolic resin is imposed between veneer and veneer, between veneer and stainless steel plate or aluminium sheet Impose structure epoxy resin or enclosed type urethane resin;
5) blank process is organized:By after sizing poplar, Eucalyptus veneer and stainless steel plate or aluminium sheet with 5~7 layers be one group, staggeredly Assembly is at the slab that thickness is 150.0~300.0mm;
6) hot pressing process:Veneer after assembly is first subjected to hot pressing, pressure is 1.5~3.0Mpa, the time is 0.9~ 1.2mm/min, temperature are 120~130 DEG C;
7) cold pressing process:The good veneer of hot pressing is cold-pressed with stainless steel plate or aluminium sheet, pressure is 1.5~4.0MPa, Time is 4~8h, and temperature is 5 DEG C or more, is suppressed into the compound laminated veneer lumber of high intensity eucalyptus poplar;
8) health process:The compound laminated veneer lumber of high intensity eucalyptus poplar suppressed is placed in the quenched environment of damping carry out it is wet Thermal balance, conditioned quenched rear moisture control is 8~12%.
6. a kind of preparation method of compound laminated veneer lumber of high intensity eucalyptus poplar, it is characterised in that:Step 3) the envelope It is in flour to close slurry: water: lignin=1.0: 4.0: 0.5 ratio, is stirred continuously under conditions of temperature is 45~100 DEG C It boils.
Description of the drawings
Fig. 1 is veneer assembly structural schematic diagram in patent Example 1 of the present invention
Fig. 2 is veneer assembly structural schematic diagram in patent Example 2 of the present invention
Fig. 3 is veneer assembly structural schematic diagram in patent Example 3 of the present invention
Specific implementation mode
Embodiment 1:With 5 laminates for one group, adjacent layer is respectively board using poplar board and Eucalyptus veneer, and adjacent veneer is mutually perpendicular to It places, 1 layer of stainless steel plate or aluminium sheet is added between group and group
As shown in Figure 1, a kind of its structure of compound laminated veneer lumber of high intensity eucalyptus poplar includes board using poplar board 1,2 and of Eucalyptus veneer Stainless steel plate or aluminium sheet 3, board using poplar board thickness be 2.5~10.0mm, width be 100.0~150.0cm, length be 100.0~ 150.0cm, Eucalyptus veneer thickness are 6.0~10.0mm, and width is 100.0~150.0cm, and length is 100.0~150.0cm, Stainless steel plate or aluminium plate thickness are 0.8~3.0mm;By above-mentioned board using poplar board and Eucalyptus veneer and stainless steel plate or aluminium sheet by suitable The sequence assembly that interlocks is pressed into a kind of compound laminated veneer lumber of high intensity eucalyptus poplar.
A kind of a kind of method of compound laminated veneer lumber of high intensity eucalyptus poplar of process embodiment 1, it includes the following steps:
1) rounding or slicing process:At thickness it is 5.0mm, width 100.0cm by willow rounding or slicing, Length is 100.0cm, at thickness is 8.0mm, width 100.0cm, length 100.0cm by eucalyptus rounding or slicing;
2) veneer drying process:Dry the veneers to moisture content 12~15%;
3) knife check process is eliminated:Smear one in the fissare part of poplar and Eucalyptus loose side after the drying Layer is with flour: water: lignin=1.0: be the closing slurry of ratio at 4.0: 0.5, makes veneer surfacing;
4) coating process:Structure phenolic resin is imposed between veneer and veneer, between veneer and stainless steel plate or aluminium sheet Impose structure epoxy resin or enclosed type urethane resin;
5) blank process is organized:By after sizing poplar, Eucalyptus veneer and stainless steel plate or aluminium sheet with 5 layers for one group, staggeredly group Base is at the slab that thickness is 150.0mm;
6) hot pressing process:Veneer after assembly is first subjected to hot pressing, pressure 2.5MPa, time 0.9mm/min, temperature It is 125 DEG C;
7) cold pressing process:The good veneer of hot pressing is cold-pressed with stainless steel plate or aluminium sheet, pressure 4.0MPa, the time is 6h, 25 DEG C of temperature are suppressed into the compound laminated veneer lumber of high intensity eucalyptus poplar;
8) health process:The compound laminated veneer lumber of high intensity eucalyptus poplar suppressed is placed in the quenched environment of damping carry out it is wet Thermal balance, conditioned quenched rear moisture control is 8~12%.
Embodiment 2:With 6 laminates be one group, from top to bottom respectively Eucalyptus veneer, Eucalyptus veneer, stainless steel plate or aluminium sheet, Stainless steel plate or aluminium sheet, board using poplar board, board using poplar board are pressed rift grain direction assembly between veneer, are directly glued between group and group
A kind of a kind of method of compound laminated veneer lumber of high intensity eucalyptus poplar of process embodiment 2, it includes the following steps:
1) rounding or slicing process:By willow log, rotary-cut or slicing at thickness are 8.0mm after processing, and width is 120.0cm, length 120.0cm, by eucalyptus log, rotary-cut or slicing at thickness are 8.0mm after processing, and width is 120.0cm, length 120.0cm;
2) veneer drying process:Dry the veneers to moisture content 12~15%;
3) knife check process is eliminated:Smear one in the fissare part of poplar and Eucalyptus loose side after the drying Level powder: water: lignin=1.0: the closing slurry of 4.0: 0.5 ratio makes veneer surfacing;
4) coating process:Structure phenolic resin is imposed between veneer and veneer, between veneer and stainless steel plate or aluminium sheet Impose structure epoxy resin or enclosed type urethane resin;
5) blank process is organized:By after sizing poplar, Eucalyptus veneer and stainless steel plate or aluminium sheet with 6 layers for one group, staggeredly group Base is at the slab that thickness is 180.0mm;
6) hot pressing process:Veneer after assembly is first subjected to hot pressing, pressure 1.5MPa, time 1.2mm/min, temperature It is 130 DEG C;
7) cold pressing process:The good veneer of hot pressing is cold-pressed with stainless steel plate or aluminium sheet, pressure 3.5MPa, the time is 7h, 15 DEG C of temperature are suppressed into the compound laminated veneer lumber of high intensity eucalyptus poplar;
8) health process:The compound laminated veneer lumber of high intensity eucalyptus poplar suppressed is placed in the quenched environment of damping carry out it is wet Thermal balance, conditioned quenched rear moisture control is 8~12%.
Embodiment 3:With 7 laminates be one group, from top to bottom respectively board using poplar board, stainless steel plate or aluminium sheet, Eucalyptus veneer, Board using poplar board, Eucalyptus veneer, stainless steel plate or aluminium sheet, board using poplar board press rift grain direction assembly between veneer, between group and group plus Enter 1 layer of stainless steel plate or aluminium sheet
A kind of a kind of method of compound laminated veneer lumber of high intensity eucalyptus poplar of process embodiment 3, it includes the following steps:
1) rounding or slicing process:By willow log, rotary-cut or slicing at thickness are 2.5mm after processing, and width is 150.0cm, length 150.0cm, by eucalyptus log, rotary-cut or slicing at thickness are 10.0mm after processing, and width is 150.0cm, length 150.0cm;
2) veneer drying process:Dry the veneers to moisture content 8~12%;
3) knife check process is eliminated:Smear one in the fissare part of poplar and Eucalyptus loose side after the drying Level powder: water: lignin=1.0: 4.0: 0.5 ratio closes slurry, makes veneer surfacing;
4) coating process:Structure phenolic resin is imposed between veneer and veneer, between veneer and stainless steel plate or aluminium sheet Impose structure epoxy resin or enclosed type urethane resin;
5) blank process is organized:By after sizing poplar, Eucalyptus veneer or stainless steel plate or aluminium sheet with 7 layers for one group, staggeredly group Base is at the slab that thickness is 180.0mm;
6) hot pressing process:Veneer after assembly is first subjected to hot pressing, pressure 2.0MPa, time 1.0mm/min, temperature It is 120 DEG C;
7) cold pressing process:The good veneer of hot pressing is cold-pressed with stainless steel plate or aluminium sheet, pressure 2.5MPa, the time is 8h, 5 DEG C of temperature are suppressed into the compound laminated veneer lumber of high intensity eucalyptus poplar;
8) health process:The compound laminated veneer lumber of high intensity eucalyptus poplar suppressed is placed in the quenched environment of damping carry out it is wet Thermal balance, conditioned quenched rear moisture control is 8~12%.

Claims (6)

1. a kind of compound laminated veneer lumber of high intensity eucalyptus poplar, it is characterised in that:The eucalyptus poplar composite bed accumulation material be by board using poplar board and Eucalyptus veneer and stainless steel plate or aluminium sheet are Component units, wherein the board using poplar board thickness is 2.5~10.0mm, width is 100.0~150.0cm, length are 100.0~150.0cm;The eucalyptus veneer thickness is 6.0~10.0mm, width 100.0 ~150.0cm, length are 100.0~150.0cm;The stainless steel plate or aluminium plate thickness are 0.8~3.0mm;By above-mentioned poplar Staggeredly assembly is pressed into the compound laminated veneer lumber of high intensity eucalyptus poplar in order for veneer and Eucalyptus veneer and stainless steel plate or aluminium sheet.
2. according to a kind of compound laminated veneer lumber of high intensity eucalyptus poplar described in claim 1, it is characterised in that:It is applied between adjacent veneer Using structure phenolic resin as adhesive, molecular weight is 800~1000, and veneer glue application amount is 150~250g/m2, veneer with Structure epoxy resin or enclosed type urethane resin are imposed between stainless steel plate or aluminium sheet, resin added is 180~300g/m2
3. according to a kind of compound laminated veneer lumber of high intensity eucalyptus poplar described in claim 1, it is characterised in that:Poplar and Eucalyptus list Plate and stainless steel plate or aluminium sheet are with 5~7 layers for one group, and staggeredly assembly is at the slab that thickness is 150.0~300.0mm, group Base type includes following several types:1) with 5 laminates for one group, adjacent layer is respectively board using poplar board and Eucalyptus veneer, adjacent list Plate is mutually perpendicular to place, and 1 layer of stainless steel plate or aluminium sheet are added between group and group;2) it is respectively from top to bottom for one group with 5 laminates Board using poplar board, Eucalyptus veneer, stainless steel plate or aluminium sheet, Eucalyptus veneer, board using poplar board, adjacent veneer are mutually perpendicular to assembly, group with Directly it is glued between group;3) with 6 laminates for one group, from top to bottom respectively Eucalyptus veneer, Eucalyptus veneer, stainless steel plate or aluminium Plate, stainless steel plate or aluminium sheet, board using poplar board, board using poplar board press rift grain direction assembly, direct glue between group and group between veneer It connects;4) with 6 laminates for one group, from top to bottom respectively Eucalyptus veneer, stainless steel plate or aluminium sheet, Eucalyptus veneer, board using poplar board, no Become rusty steel plate or aluminium sheet, board using poplar board, presses rift grain direction assembly between veneer, one layer of stainless steel plate or aluminium are added between group and group Plate;5) with 7 laminates for one group, from top to bottom respectively stainless steel plate or aluminium sheet, board using poplar board, Eucalyptus veneer, board using poplar board, eucalyptus Veneer, board using poplar board, stainless steel plate or aluminium sheet are pressed rift grain direction assembly between veneer, are directly glued between group and group;6) with 7 laminates be one group, from top to bottom respectively board using poplar board, stainless steel plate or aluminium sheet, Eucalyptus veneer, board using poplar board, Eucalyptus veneer, Stainless steel plate or aluminium sheet, board using poplar board press rift grain direction assembly between veneer, and 1 layer of stainless steel plate or aluminium are added between group and group Plate.
4. according to a kind of compound laminated veneer lumber of high intensity eucalyptus poplar described in claim 1, it is characterised in that:The list of compression moulding Plate laminated material is the rectangular of large format.
5. a kind of preparation method of the compound laminated veneer lumber of high intensity eucalyptus poplar, feature includes processing step:
1) rounding or slicing process:At thickness it is 2.5~10.0mm, width 100.0 by willow rounding or slicing ~150.0cm, length are 100.0~150.0cm, at thickness are 6.0~10.0mm by eucalyptus rounding or slicing, width is 100.0~150.0cm, length are 130.0~250.0cm;
2) veneer drying process:Dry the veneers to moisture content 8~15%;
3) knife check process is eliminated:Smear one layer of envelope in the fissare part of poplar and Eucalyptus loose side after the drying Slurry is closed, veneer surfacing is made;
4) coating process:Structure phenolic resin is imposed between veneer and veneer, is imposed between veneer and stainless steel plate or aluminium sheet Structure epoxy resin or enclosed type urethane resin;
5) blank process is organized:By after sizing poplar, Eucalyptus veneer and stainless steel plate or aluminium sheet with 5~7 layers for one group, staggeredly assembly At the slab that thickness is 150.0~300.0mm;
6) hot pressing process:Veneer after assembly is first subjected to hot pressing, pressure is 1.5~3.0Mpa, and the time is 0.9~1.2mm/ Min, temperature are 120~130 DEG C;
7) cold pressing process:The good veneer of hot pressing is cold-pressed with stainless steel plate or aluminium sheet, pressure is 1.5~4.0Mpa, time For 4~8h, temperature is 5 DEG C or more, is suppressed into the compound laminated veneer lumber of high intensity eucalyptus poplar;
8) health process:The compound laminated veneer lumber of high intensity eucalyptus poplar suppressed is placed in the quenched environment of damping and carries out damp and hot put down Weighing apparatus, time are 15 days or more, and conditioned quenched rear moisture control is 8~12%.
6. according to a kind of preparation method of the compound laminated veneer lumber of high intensity eucalyptus poplar described in claim 5, it is characterised in that:Step Rapid 3) the described closing slurry is in flour: water: lignin=1.0: 4.0: 0.5 ratio, the condition for being 45~100 DEG C in temperature Under be stirred continuously and boil.
CN201810534927.1A 2018-05-25 2018-05-25 A kind of compound laminated veneer lumber of high intensity eucalyptus poplar and its manufacturing method Pending CN108501478A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110861372A (en) * 2019-11-25 2020-03-06 德华兔宝宝装饰新材股份有限公司 Aluminum-wood heterogeneous composite technical wood
CN111391043A (en) * 2020-05-09 2020-07-10 寿光市鲁丽木业股份有限公司 Production process of high-strength laminated veneer lumber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110861372A (en) * 2019-11-25 2020-03-06 德华兔宝宝装饰新材股份有限公司 Aluminum-wood heterogeneous composite technical wood
CN111391043A (en) * 2020-05-09 2020-07-10 寿光市鲁丽木业股份有限公司 Production process of high-strength laminated veneer lumber

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