CN110696117A - Impregnated bond paper facing laminated wood board applied to core board and manufacturing method thereof - Google Patents
Impregnated bond paper facing laminated wood board applied to core board and manufacturing method thereof Download PDFInfo
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- CN110696117A CN110696117A CN201911100370.1A CN201911100370A CN110696117A CN 110696117 A CN110696117 A CN 110696117A CN 201911100370 A CN201911100370 A CN 201911100370A CN 110696117 A CN110696117 A CN 110696117A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000002023 wood Substances 0.000 title claims description 27
- 238000007731 hot pressing Methods 0.000 claims abstract description 25
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000005034 decoration Methods 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 126
- 239000002344 surface layer Substances 0.000 claims description 32
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 241000219000 Populus Species 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 239000011120 plywood Substances 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- 244000082946 Tarchonanthus camphoratus Species 0.000 description 1
- 235000005701 Tarchonanthus camphoratus Nutrition 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- 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
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
- A47B96/20—Furniture panels or like furniture elements
- A47B96/205—Composite panels, comprising several elements joined together
- A47B96/206—Composite panels, comprising several elements joined together with laminates comprising planar, continuous or separate layers
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- 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
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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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
- 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
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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
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2220/00—General furniture construction, e.g. fittings
- A47B2220/0052—Panels
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an impregnated bond paper veneer lumber core board and a manufacturing method thereof, wherein the impregnated bond paper veneer lumber core board applied to the core board comprises an upper veneer layer, a core board and a lower veneer layer which are mutually bonded from top to bottom; the manufacturing method of the impregnated bond paper veneer blockboard applied to the core board comprises the following steps: hot-pressing the single board assembly to form a core strip; the superposition direction of the single plates is positioned in the width direction of the core strip; gluing and splicing a plurality of core strips to prepare a core plate; and gluing a veneer layer on the upper surface of the core plate, and gluing a lower veneer layer on the lower surface of the core plate. The method improves the deformation resistance of the impregnated bond paper veneer lumber core board, and ensures that the impregnated bond paper veneer lumber core board has more stable performance and longer service life. The invention is suitable for the fields of indoor decoration, furniture manufacture and the like, and is particularly suitable for manufacturing cabinet doors such as wardrobes, cabinets and the like.
Description
Technical Field
The invention belongs to the technical field of plates, and relates to a laminated wood board with a veneer facing made of impregnated bond paper, in particular to a laminated wood board with a veneer facing made of impregnated bond paper and a manufacturing method thereof.
Background
Impregnated bond paper veneer lumber core board is as a novel ecological plate, not only has the beautiful outward appearance of ordinary plywood and rather than close intensity, and impregnated bond paper veneer lumber core board is lighter than the texture with the plywood moreover, consumes gluey still less, and the environmental protection degree is higher. And because it can give the solid wood feeling to people, has satisfied the requirement of the consumer to the solid wood furniture, therefore the impregnated bond paper veneer lumber core board has got extensive recognition and application as the material of interior decoration and furniture preparation. However, with the wide application of the impregnated bond paper veneer lumber core board in the fields of interior decoration, furniture manufacture and the like, people have higher and higher requirements on the quality of the impregnated bond paper veneer lumber core board.
The performance of the impregnated bond paper veneer lumber core is mainly determined by the structure of the core board, and the structure and the manufacturing method of the core board play an important role in evaluating the technical parameters of the impregnated bond paper veneer lumber core such as transverse static bending strength, surface evenness, thickness deviation and the like of the impregnated bond paper veneer lumber core. In the prior art, in the manufacturing process of the impregnated bond paper veneer lumber core board, when the core strips required by the core board are manufactured, the superposition direction of the veneers is usually arranged in the thickness direction of the core strips, and the grain direction of the veneers is arranged in the length direction of the core strips. However, the core board manufactured by using the core strip with the structure cannot limit the deformation of the veneer in the grain following direction in the core board, which causes the manufactured impregnated bond paper veneer lumber core board to warp along the grain following direction of the wood board after being used for a period of time, and affects the transverse static bending strength and the surface flatness of the impregnated bond paper veneer lumber core board, so as to reduce the beauty and the service performance of the impregnated bond paper veneer lumber core board.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide the impregnated bond paper facing blockboard applied to the core board and the manufacturing method thereof, so as to achieve the purposes of stronger deformation resistance, more stable performance and longer service life of the impregnated bond paper facing blockboard.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the impregnated bond paper veneer lumber core board applied to the core board comprises an upper veneer layer, a core board and a lower veneer layer which are mutually bonded from top to bottom;
the core plate is formed by splicing a plurality of core strips, each core strip is formed by hot pressing after N layers of single plates are assembled, the superposition direction of the single plates is positioned in the width direction of the core strip, the grain following direction of the single plates is positioned in the length direction of the core strip, and N is more than or equal to 2.
As a limitation of the present invention, the upper veneer layer and the lower veneer layer are both single-layer veneers; or the upper veneer layer and the lower veneer layer are both double-layer veneers.
As a further limitation of the present invention, the impregnated bond paper faced core-board for core applications comprises, from top to bottom, an upper decorative layer, an upper veneer layer, a core, a lower veneer layer and a lower decorative layer which are bonded to each other;
or the impregnated bond paper veneer lumber core board applied by the core board comprises an upper surface layer, an upper decorative layer, an upper veneer layer, the core board, a lower veneer layer, a lower decorative layer and a lower surface layer which are mutually bonded from top to bottom.
As a further limitation of the present invention, the upper decoration layer and the lower decoration layer are both technical wood veneer or poplar wood veneer, and the upper surface layer and the lower surface layer are both impregnated adhesive coated paper or solid wood veneer.
The invention also provides a manufacturing method of the impregnated bond paper veneer blockboard applied to the core board, and the technical scheme is as follows: the method comprises the following steps:
step (I): making a core board
S1, hot-pressing N layers of single plate assemblies to form a core strip;
s2, enabling the superposition direction of the N layers of single plates to be located in the width direction of the core strip, and enabling the grain following direction of the single plates to be located in the length direction of the core strip;
s3, gluing and splicing a plurality of core strips to form a core plate, wherein N is more than or equal to 2;
step (II): bonded veneer layer
And gluing a veneer layer on the upper surface of the core plate, and gluing a lower veneer layer on the lower surface of the core plate.
The method further comprises the following step (III): bonding decorative layer
The upper surface of the upper veneer layer is adhered with a decorative layer, and the lower surface of the lower veneer layer is adhered with a lower decorative layer;
step (IV): adhesive surface layer
The upper surface of the upper decorative layer is glued with an upper surface layer, and the lower surface of the lower decorative layer is glued with a lower surface layer.
As a further limitation of the present invention, in the step (one):
s1, cutting a wood section into a single plate, wherein the cutting direction is vertical to the grain direction of the single plate; then, hot-pressing the N layers of single board assemblies to form board squares, and cutting the board squares into core strips;
s2, enabling the superposition direction of the N layers of single plates to be located in the width direction of the core strip, and enabling the grain following direction of the single plates to be located in the length direction of the core strip;
and S3, gluing and splicing the plurality of core strips to form the core plate.
In the step (I), the water content of the veneer is less than 8%, the unit pressure of hot pressing is 8-12 kg/square centimeter, the hot pressing time is 15-30 minutes, and the hot pressing temperature is 115-120 ℃.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the core board is manufactured by changing the placing direction of the veneers in the core strips, so that the grain following direction of the veneers is staggered with the deformation direction of the core strips, the internal stress in the core board is changed, the impregnated bond paper veneer lumber core board can be effectively prevented from being warped and deformed along the grain following direction of the wood board due to long-time use, the transverse static bending strength of the impregnated bond paper veneer lumber core board manufactured by using the method is improved to 35-50 MPa, the flatness deviation is not more than 0.9 percent, and the thickness deviation is +/-0.2 mm, so that the impregnated bond paper veneer lumber core board is more stable in performance, longer in service life and more attractive in appearance.
(2) The structure of the upper veneer layer and the lower veneer layer in the invention adopts a single-layer veneer structure, so that the prepared impregnated bond paper veneer lumber core board has better stability and moderate thickness; and the adoption of the double-layer single-board structure can ensure that the manufactured impregnated bond paper veneer lumber core board has better transverse static bending strength and stronger bearing capacity. Therefore, the impregnated bond paper veneer lumber core board can be selectively manufactured according to different requirements, so that the impregnated bond paper veneer lumber core board has wider application range.
(3) According to the invention, the scientific and technical veneer or the poplar veneer is used as the decorative layer, so that the inherent defects of natural wood such as wormholes, knots, color changes and the like on the impregnated bond paper veneer blockboard are overcome on the premise of meeting the decorative effect of people on different tree species, and the impregnated bond paper veneer blockboard is more attractive and meets the use requirements of different people.
(4) According to the manufacturing method disclosed by the invention, the water content of the single board, the hot pressing unit pressure, the hot pressing time and the hot pressing temperature value are matched with each other, so that the board with certain bonding strength, stable structure and capability of preventing the surface of the single board from cracking can be obtained.
The invention is suitable for the fields of indoor decoration, furniture manufacture and the like, and is particularly suitable for manufacturing cabinet doors such as wardrobes, cabinets, door leaves and the like.
Drawings
The invention is described in further detail below with reference to the figures and the embodiments.
Fig. 1 is a schematic view of the overall structure of an impregnated bond paper faced core-board according to example 1 of the present invention;
fig. 2 is a schematic structural diagram of a core board according to embodiment 1 of the present invention;
fig. 3 is an enlarged schematic structural view of a core bar in embodiment 1 of the present invention.
In the figure: 1. a single board; 2. a core bar; 3. a core board; 4. an upper veneer layer; 5. a lower veneer layer; 6. an upper decorative layer; 7. a lower decorative layer; 8. an upper surface layer; 9. and (4) a lower surface layer.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the description of the preferred embodiment is only for purposes of illustration and understanding, and is not intended to limit the invention.
Example 1 impregnated bond paper faced core board for core applications
In this embodiment, the placing direction of the veneer 1 in the core board 3 of the impregnated bond paper veneer lumber core is changed, so that the deformation direction of the core board 3 is staggered with the wood grain direction of the veneer 1, so that the internal stress in the core board 3 changes, and the deformation resistance and the surface flatness of the impregnated bond paper veneer lumber core applied to the core board 3 are improved.
As shown in fig. 1, the present embodiment includes an upper surface layer 8, an upper decorative layer 6, an upper veneer layer 4, a core 3, a lower veneer layer 5, a lower decorative layer 7, and a lower surface layer 9, which are bonded to each other from top to bottom.
Core board 3
As shown in fig. 2 to 3, the core board 3 of the present embodiment is formed by splicing a plurality of core strips 2, and the core strips 2 are formed by splicing a plurality of single boards 1 by gluing.
And respectively gluing the upper plane and the lower plane of the single plate 1, and stacking N layers in the order from top to bottom to finish the assembly of the single plate 1. Where N ≧ 2, N =14 in this embodiment. After assembly, a universal hot press is used for producing the laminated wood board by using the impregnated bond paper veneer board to obtain a board square, the board square is cut according to the specified size to form core strips 2, and the length, the width and the thickness of each core strip 2 are 500mm, 45mm and 12mm respectively. Plural as referred to herein is two or more.
When the core strips 2 are spliced, the length of the core strips 2 is greater than the width of the core strips 2, and it is required to ensure that the superposition direction of the single plates 1 is located in the width direction of the core strips 2 and the grain following direction of the single plates 1 is located in the length direction of the core strips 2. That is, the overlapping thickness of the single plate 1 is the width of the core strip 2, and the extending length of the single plate 1 is the extending length of the core strip 2, so that the grain direction of the single plate 1 is staggered with the deformation direction of the core plate 3.
After the core strips 2 are placed, the side surfaces of the core strips 2 are bonded with the other core strip 2 through an adhesive, and the core strips 2 are spliced into the core plate 3 according to the plate manufacturing requirement.
(II) an upper veneer layer 4 and a lower veneer layer 5
The upper veneer layer 4 and the lower veneer layer 5 play an important fixing role in the impregnated adhesive film paper veneer lumber core board, the upper veneer layer 4 is glued on the upper surface of the core board 3, the lower veneer layer 5 is glued on the lower surface of the core board 3, and the upper veneer layer 4 and the lower veneer layer 5 are symmetrical about the core board 3. Wherein, the upper veneer layer 4 and the lower veneer layer 5 are both single-layer veneers or double-layer veneers made of the veneers 1.
(III) Upper decorative layer 6 and lower decorative layer 7
The upper decorative layer 6 and the lower decorative layer 7 are used for further decorating the appearance of the impregnated bond paper veneer lumber core board, so that the impregnated bond paper veneer lumber core board is more beautiful. The upper decorative layer 6 and the lower decorative layer 7 are symmetrical about the core board 3, wherein the upper decorative layer 6 and the lower decorative layer 7 adopt any one of technical wood veneer and poplar veneer.
(IV) Upper skin layer 8 and lower skin layer 9
The upper surface layer 8 and the lower surface layer 9 are used for decorating the outer surface of the impregnated bond paper veneer lumber core board, and the wear-resisting, corrosion-resisting and pressure-resisting characteristics of the impregnated bond paper veneer lumber core board are improved. The upper surface layer 8 and the lower surface layer 9 are symmetrical about the core plate 3, the upper surface layer 8 and the lower surface layer 9 can adopt impregnated adhesive coated paper, and the surface of the impregnated adhesive coated paper can be any one of a pitted surface, a smooth surface, a relief, a zero degree and a high gloss.
The upper surface layer 8 and the lower surface layer 9 can also adopt solid wood skin, so that furniture and the like manufactured by the laminated wood board decorated by the impregnated bond paper have solid wood feeling.
The manufacturing method of this example is shown in example 2 and example 3.
Example 2 method for manufacturing impregnated bond paper faced core board for core board application
The present example was used to make the impregnated bond paper faced blockboard of example 1, including the following steps:
the assembly of the single plates 1 is hot-pressed to form a core strip 2
Gluing and bonding the single plate 1 and the single plate 1, and stacking N layers in the order from top to bottom to finish the assembly of the single plate 1. Where N ≧ 2, N =14 in this embodiment.
And after assembly, carrying out hot pressing on the veneer layer by a hot press, wherein the hot pressing unit pressure is 8-12 kg/square centimeter, the hot pressing time is 15-30 minutes, and the hot pressing temperature is 115-120 ℃, so as to obtain the core strip 2 with the specified size.
It should be ensured that the superposition direction of the N layers of veneers 1 is located in the width direction of the core strip 2, and the grain-following direction of the veneers 1 is located in the length direction of the core strip 2, that is, the superposed thickness of the veneers 1 is the width of the core strip 2, and the extension length of the veneers 1 is the extension length of the core strip 2. That is, the single boards 1 stacked in sequence from top to bottom are rotated by 90 °, so that the single boards 1 are stacked in sequence from left to right, as shown in fig. 3. Thus, the core cane 2 is formed to have a length of 500mm, a width (i.e., the thickness of the stack of veneers 1) of 45mm + -0.2 mm, and a thickness of 12 mm.
(II) Split core strip 2
The side surface of the core strip 2 is bonded with another core strip 2 through an adhesive, and the core strips 2 are spliced to the core-forming plate 3 according to the plate manufacturing requirement.
(III) bonding the veneer layers
The upper surface of the core plate 3 is glued with a veneer layer 4, and the lower surface of the core plate 3 is glued with a veneer layer 5.
Example 3 method for manufacturing impregnated bond paper faced core board for core applications
The present example was used to make the impregnated bond paper faced blockboard of example 1, including the following steps:
cutting the wood sections into veneers 1
And (3) cutting the wood sections into the veneers 1 in a rotary cutting or planing manner, wherein the cutting direction is vertical to the grain direction of the veneers 1, and the grain direction of the obtained veneers 1 is consistent with the length direction of the veneers 1. The wood section is any one of poplar, camphorwood and fir. The obtained veneer 1 had a length of 1265mm, a width of 650mm and a thickness of 3 mm. After drying, the water content of the veneer 1 is less than 8%.
(II) forming a plate square by assembling the single plates 1 and hot-pressing
Gluing and bonding the single plate 1 and the single plate 1, and stacking N layers in the order from top to bottom to finish the assembly of the single plate 1. Where N ≧ 2, N =14 in this embodiment.
And (3) after assembly, hot pressing the veneer layers by a hot press, wherein the hot pressing unit pressure is 8-12 kg/square centimeter, the hot pressing time is 15-30 minutes, the hot pressing temperature is 115-120 ℃, a veneer with the length of 1265mm, the width of 650mm and the thickness (namely the stacking thickness of the veneer layers) of 45mm +/-0.2 mm is obtained, and the veneer is used after air cooling.
(III) cutting the board into core strips 2
The plates are sawn to size into core strips 2. It should be ensured that the superposition direction of the N layers of veneers 1 is located in the width direction of the core strip 2, and the grain-following direction of the veneers 1 is located in the length direction of the core strip 2, that is, the superposed thickness of the veneers 1 is the width of the core strip 2, and the extension length of the veneers 1 is the extension length of the core strip 2. That is, the single boards 1 stacked in sequence from top to bottom are rotated by 90 °, so that the single boards 1 are stacked in sequence from left to right, as shown in fig. 3. Thus, the core cane 2 is formed to have a length of 500mm, a width (i.e., the thickness of the stack of veneer layers) of 45mm + -0.2 mm, and a thickness of 12 mm.
(IV) Split core strip 2
The side surface of the core strip 2 is bonded with another core strip 2 through an adhesive, and the core strips 2 are spliced to the core-forming plate 3 according to the plate manufacturing requirement.
(V) bonding the veneer layers
The upper surface of the core plate 3 and the lower surface of the core plate 3 are coated with glue, then the lower surface of the upper veneer layer 4 and the upper surface of the core plate 3 are fixed by gluing, and the upper surface of the lower veneer layer 5 and the lower surface of the core plate 3 are fixed by gluing. The veneer layer may be a single-layer veneer or a double-layer veneer made of the veneer 1. In this embodiment, a single-layer board is used.
(VI) bonding decorative layer
And (5) bonding a decorative layer on the basis of the veneer layer in the step (five). Namely, the upper surface of the upper veneer layer 4 is fixed with the lower surface of the upper decorative layer 6 by gluing, and the lower surface of the lower veneer layer 5 is fixed with the upper surface of the lower decorative layer 7 by gluing. The upper decorative layer 6 and the lower decorative layer 7 are both made of technical wood veneer or poplar veneer.
(VII) adhesive surface layer
And (5) bonding the surface layer on the basis of the decorative layer in the step (six). Namely, the upper surface of the upper decorative layer 6 is bonded with the lower surface of the upper surface layer 8, and the lower surface of the lower decorative layer 7 is bonded with the upper surface of the lower surface layer 9. The upper surface layer 8 and the lower surface layer 9 are both impregnated glue coated paper or solid wood skin.
Thus, the impregnated bond paper veneer lumber core board is prepared.
Embodiment 4-8 method for manufacturing impregnated bond paper facing core board
The preparation method is the same as the preparation steps of example 2, except that parameters involved in the steps are different, and the specific steps are shown in Table 1.
The performance of the obtained impregnated bond paper facing blockboard is superior to that of the common impregnated bond paper facing blockboard, and is shown in table 2. The determination of the transverse static bending strength adopts the national standard GB/T17657-.
Embodiments 9 to 13 methods of manufacturing impregnated bond paper faced core board for core applications
The preparation method is the same as the preparation steps of example 3, except that parameters involved in the steps are different, and the specific steps are shown in Table 3.
The performance of the obtained impregnated bond paper facing blockboard is superior to that of the common impregnated bond paper facing blockboard, and is shown in table 4. The determination of the transverse static bending strength adopts the national standard GB/T17657-.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an impregnated bond paper veneer lumber core board of core application which characterized in that: the impregnated bond paper veneer lumber core board applied to the core board comprises an upper veneer layer, the core board and a lower veneer layer which are mutually bonded from top to bottom;
the core plate is formed by splicing a plurality of core strips, each core strip is formed by hot pressing after N layers of single plates are assembled, the superposition direction of the single plates is positioned in the width direction of the core strip, the grain following direction of the single plates is positioned in the length direction of the core strip, and N is more than or equal to 2.
2. The impregnated bond paper faced core board of claim 1, wherein: the upper veneer layer and the lower veneer layer are both single-layer veneers; or the upper veneer layer and the lower veneer layer are both double-layer veneers.
3. The impregnated bond paper faced core board of claim 2, wherein: the impregnated bond paper veneer lumber core board applied to the core board comprises an upper decorative layer, an upper veneer layer, the core board, a lower veneer layer and a lower decorative layer which are mutually bonded from top to bottom;
or the impregnated bond paper veneer lumber core board applied by the core board comprises an upper surface layer, an upper decorative layer, an upper veneer layer, the core board, a lower veneer layer, a lower decorative layer and a lower surface layer which are mutually bonded from top to bottom.
4. The impregnated bond paper faced core board of claim 3, wherein: the upper decoration layer and the lower decoration layer are both technical wood veneers or poplar veneers, and the upper surface layer and the lower surface layer are both impregnated glue coated paper or solid wood veneers.
5. A method of making an impregnated bond paper faced core board for core applications, the impregnated bond paper faced core board of claims 1-4, comprising: the method comprises the following steps:
step (I): making a core board
S1, hot-pressing N layers of single plate assemblies to form a core strip;
s2, enabling the superposition direction of the N layers of single plates to be located in the width direction of the core strip, and enabling the grain following direction of the single plates to be located in the length direction of the core strip;
s3, gluing and splicing a plurality of core strips to form a core plate, wherein N is more than or equal to 2;
step (II): bonded veneer layer
And gluing a veneer layer on the upper surface of the core plate, and gluing a lower veneer layer on the lower surface of the core plate.
6. The method of making an impregnated bond paper faced core board as claimed in claim 5, wherein: further comprising the step (III): bonding decorative layer
The upper surface of the upper veneer layer is adhered with a decorative layer, and the lower surface of the lower veneer layer is adhered with a lower decorative layer;
step (IV): adhesive surface layer
The upper surface of the upper decorative layer is glued with an upper surface layer, and the lower surface of the lower decorative layer is glued with a lower surface layer.
7. The method of making an impregnated bond paper faced core board for use in a core applications as claimed in claim 5 or 6, wherein:
in the step (I):
s1, cutting a wood section into a single plate, wherein the cutting direction is vertical to the grain direction of the single plate; then, hot-pressing the N layers of single board assemblies to form board squares, and cutting the board squares into core strips;
s2, enabling the superposition direction of the N layers of single plates to be located in the width direction of the core strip, and enabling the grain following direction of the single plates to be located in the length direction of the core strip;
and S3, gluing and splicing the plurality of core strips to form the core plate.
8. The method of making an impregnated bond paper faced core board as claimed in claim 7, wherein: in the step (I), the water content of the veneer is less than 8%, the unit pressure of hot pressing is 8-12 kg/square centimeter, the hot pressing time is 15-30 minutes, and the hot pressing temperature is 115-120 ℃.
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Application publication date: 20200117 |