CN108177208B - Wooden shaving board and wooden artificial board - Google Patents
Wooden shaving board and wooden artificial board Download PDFInfo
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- CN108177208B CN108177208B CN201711302870.4A CN201711302870A CN108177208B CN 108177208 B CN108177208 B CN 108177208B CN 201711302870 A CN201711302870 A CN 201711302870A CN 108177208 B CN108177208 B CN 108177208B
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- wood shavings
- wood
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- 239000002023 wood Substances 0.000 claims abstract description 181
- 239000002344 surface layer Substances 0.000 claims abstract description 114
- 239000012792 core layer Substances 0.000 claims abstract description 63
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 19
- 238000012216 screening Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 229920002522 Wood fibre Polymers 0.000 description 19
- 239000002025 wood fiber Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 16
- 239000000835 fiber Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 239000003292 glue Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920001587 Wood-plastic composite Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- -1 shaving boards Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000011155 wood-plastic composite Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
- 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
- B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
-
- 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
- B32B21/10—Next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/13—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board all layers being exclusively wood
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention provides a wood shaving board, which comprises a surface layer and a core layer, wherein the surface layer comprises an upper surface layer and a lower surface layer, the surface layer comprises an adhesive accounting for 3-8 wt% of the surface layer, an auxiliary agent accounting for 0-10 wt% of the surface layer and the balance of wood shavings, and the wood shavings with the screen value of-40 to +60 meshes in the surface layer account for the highest percentage of the total weight of the surface layer wood shavings; the core layer comprises an adhesive accounting for 2-8 wt% of the core layer, an auxiliary agent accounting for 0-10 wt% of the core layer and wood shavings accounting for the rest, and the wood shavings with the sieve value of ~+ 12 meshes in the core layer account for the highest percentage of the total weight of the wood shavings in the core layer.
Description
Technical Field
The invention relates to the technical field of artificial boards, in particular to a wood shaving board and a wood artificial board
Background
At present, the artificial board replaces the prior solid wood and becomes the main material of furniture. The artificial board is a board or a molded product which is made by taking wood or other non-wood plants as raw materials, separating the raw materials into various unit materials through certain mechanical processing, and then gluing the unit materials with or without adhesive and other additives. The wood-plastic composite board mainly comprises three main products such as plywood, shaving boards, fiber boards and the like.
However, in the conventional methods for producing artificial boards by using wood, the screening values of the surface layer raw material and the core layer raw material of the wood artificial board are not reasonably designed, so that the manufactured wood artificial board has some problems, for example, the surface layer raw material contains more coarse materials, which affects the surface strength and the facing application of the board; the core layer raw material contains more fine materials, and the specific surface of the fine materials is larger, so that a large amount of adhesive is consumed, and the production cost is increased.
Disclosure of Invention
The invention aims to overcome the contradiction or the problem and improve the performance of the board, and provides a wood shaving board and a wood artificial board.
According to one aspect of the present invention, there is provided a wood particle board comprising a surface layer and a core layer, the surface layer comprising an upper surface layer and a lower surface layer.
The upper surface layer comprises an adhesive accounting for 3-8 wt% of the upper surface layer, an auxiliary agent accounting for 0-10 wt% of the upper surface layer and the balance of wood shavings, wherein the wood shavings with the sieve value of-40 to +60 meshes account for the highest percentage of the total weight of the wood shavings on the upper surface layer; the core layer comprises an adhesive accounting for 2-8 wt% of the core layer, an auxiliary agent accounting for 0-10 wt% of the core layer and wood shavings accounting for the rest, wherein the wood shavings with the sieve value of ~+ 12 meshes account for the highest percentage of the total weight of the wood shavings of the core layer; the lower surface layer comprises an adhesive accounting for 3-8 wt% of the lower surface layer, an auxiliary agent accounting for 0-10 wt% of the lower surface layer and the balance wood shavings, wherein the wood shavings with the sieve value of-40 to +60 meshes account for the highest percentage of the total weight of the wood shavings of the lower surface layer.
For example, in the upper surface layer, the wood shavings with the screen value of-40 to +60 meshes account for 42 to 46 percent of the total weight of the wood shavings of the upper surface layer; and/or in the lower surface layer, the percentage of the wood shavings with the screen value of-40 to +60 meshes in the total weight of the wood shavings of the lower surface layer is 42-46%.
Further, in the core layer, the wood shavings with the sieve value of ~ +12 meshes account for 60% -70% of the total weight of the wood shavings of the core layer.
Further, the screening values of the wood strands in the upper surface layer and/or the lower surface layer are: the wood shavings with the mesh of- +12 are less than 2 percent,
3 to 7 percent of wood shavings with minus 12 to plus 20 meshes,
21 to 25 percent of wood shavings with minus 20 to plus 40 meshes,
42 to 46 percent of wood shavings with minus 40 to plus 60 meshes,
21 to 25 percent of wood shavings with minus 60 to plus 80 meshes,
3 to 5 percent of wood shavings with minus 80 to plus 100 meshes,
1% of wood shavings of-100 meshes,
wherein, the percentage is the percentage of the wood shavings with corresponding mesh number relative to the total weight of the wood shavings of the upper surface layer or the lower surface layer.
Further, the core layer wood strands have a sieve value of:
60 to 70 percent of wood shavings of- +12 meshes,
12 to 20 percent of wood shavings with 12 to 20 meshes,
8 to 13 percent of wood shavings with minus 20 to plus 40 meshes,
2 to 10 percent of wood shavings with minus 40 to plus 60 meshes,
wherein, the percentage is the percentage of the wood shavings with corresponding meshes relative to the total weight of the wood shavings of the core layer.
For example, the weight ratio of the surface layer wood shavings to the core layer wood shavings is 3: 7-6: 4.
For example, the adhesive is an isocyanate adhesive.
Further, the glue application amount of the surface layer wood shavings is 3% -5% of the total weight of the surface layer wood shavings, and/or the glue application amount of the core layer wood shavings is 2% -4% of the total weight of the core layer wood shavings.
For example, the wood strands consist of one wood strand or of a mixture of wood strands.
According to another aspect of the present invention, an artificial board is provided, comprising an upper surface layer, a core layer, and a lower surface layer.
The upper surface layer comprises an adhesive accounting for 3-8 wt% of the upper surface layer, an auxiliary agent accounting for 0-10 wt% of the upper surface layer and the balance wood fiber; the core layer comprises an adhesive accounting for 2-8 wt% of the core layer, an auxiliary agent accounting for 0-10 wt% of the core layer and the balance of wood shavings; the lower surface layer comprises an adhesive accounting for 3-8 wt% of the lower surface layer, an auxiliary agent accounting for 0-10 wt% of the lower surface layer, and the balance wood fiber.
Further, the screening value of the wood fibres in the upper skin and/or the lower skin is:
0 to 1% of wood fiber of- +5 mesh,
21 to 25 percent of wood fiber with 5 to 25 meshes below zero,
27 to 35 percent of wood fiber with 25 to 45 meshes below zero,
16 to 20 percent of wood fiber with minus 45 to plus 80 meshes,
10 to 11 percent of wood fiber with minus 80 to plus 120 meshes,
14 to 25 percent of wood fiber with-120 meshes,
wherein, the percentage is the percentage of the wood fiber with corresponding mesh number relative to the total weight of the wood fiber of the upper surface layer or the lower surface layer.
Compared with the prior art, the wood shavings or wood fibers provided by the invention adopt specific screening values, and the quality of the board is improved.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
Fig. 1 is a schematic structural view of an artificial board.
In the figure: 31-upper surface layer, 32-core layer, 33-lower surface layer.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
In this context, the expression "wood-based board" refers to a board or a molded article made of wood or other non-wood plants as raw materials, which are separated into various unit materials by a certain mechanical process, and then glued together with or without the application of adhesives and other additives. The wood-plastic composite board mainly comprises three main products such as plywood, shaving boards, fiber boards and the like.
The expression "wood shavings" is intended to mean pieces of wood or non-wood raw material, machined, in the form of pieces, strips, rods and/or granules, having a certain shape and size.
The expression "fibres" refers to the basic elements constituting the fibreboard, which may be elements made of wood or other plant fibre raw materials by mechanical, chemical, mechanical and chemical methods, for example, in the fibreboard industry it may refer to fibre tows. Typically, "fibers" are filamentous substances that have a greater aspect ratio than "strands".
The expression "sieve value" refers to the weight of fiber/fiber remaining on screens of different sizes as a percentage of the total weight of fiber/fiber.
In this context, unless otherwise indicated, "mesh" is the mesh of a standard vibrating screen, which typically corresponds to the screen opening size as follows:
| mesh size (mm) | Standard mesh number (mu) |
| 4.75 | 4 |
| 4.00 | 5 |
| 2.00 | 10 |
| 1.70 | 12 |
| 0.850 | 20 |
| 0.710 | 25 |
| 0.425 | 40 |
| 0.355 | 45 |
| 0.250 | 60 |
| 0.180 | 80 |
| 0.150 | 100 |
| 0.125 | 120 |
According to an exemplary embodiment, an artificial board is provided, which includes a surface layer and a core layer, and as shown in fig. 1, may include an upper surface layer 31, a core layer 32, and a lower surface layer 33.
According to an exemplary embodiment, the artificial board may be manufactured by a method of: the artificial board is prepared by chipping wood, slicing, drying and screening to prepare surface layer materials and core layer materials, then respectively gluing the surface layer materials and the core layer materials, paving the lower surface layer, the core layer and the upper surface layer in sequence, and then performing prepressing, hot pressing and post-treatment.
It should be noted that, generally, the upper surface layer and the lower surface layer are the same, so, hereinafter, for convenience of description, the "surface layer" is used to indicate both the upper surface layer and the lower surface layer, for example, "the surface layer of the artificial board may include an adhesive agent accounting for 3-8 wt% of the surface layer, an auxiliary agent accounting for 0-10 wt% of the surface layer, and wood shavings accounting for the rest," and the upper surface layer 31 and the lower surface layer 33 both include an adhesive agent accounting for 3-8 wt% of the surface layer, an auxiliary agent accounting for 0-10 wt% of the surface layer, and wood shavings accounting for the rest; "the wood strands having a sieve value of-40 to +60 mesh among the wood strands may account for the highest percentage of the total weight of the surface layer wood strands" means that the wood strands having a sieve value of-40 to +60 mesh account for the highest percentage of the total weight of the surface layer wood strands among the upper surface layer 31 and the lower surface layer 33.
For example, the surface layer of the artificial board may include an adhesive agent 3-8 wt% of the surface layer, an auxiliary agent 0-10 wt% of the surface layer, and wood strands with a sieve value of-40 to +60 mesh, which may be the highest percentage of the total weight of the surface layer wood strands, that is, the highest percentage of the wood strands with the sieve value of-40 to +60 mesh is the highest percentage of the total weight of the surface layer wood strands compared to other mesh wood strands, that is, the percentage of the wood strands with the sieve value of-40 to +60 mesh is higher than the percentage of the total weight of the surface layer wood strands, which is, independently, the total weight of the surface layer wood strands, for example, the sieve values of the surface layer wood strands may be as follows:
1 percent of wood shavings of- +12 meshes,
4 percent of wood shavings with minus 12 to plus 20 meshes,
23 percent of wood shavings with minus 20 to plus 40 meshes,
44 percent of wood shavings with minus 40 to plus 60 meshes,
23 percent of wood shavings with minus 60 to plus 80 meshes,
4 percent of wood shavings with minus 80 to plus 100 meshes,
1% of wood shavings of-100 meshes,
wherein, the percentage is the percentage of the wood shavings with corresponding meshes relative to the total weight of the surface layer wood shavings.
The wood-based board core layer may include an adhesive, which accounts for 2 to 8 wt% of the core layer, an auxiliary agent, which accounts for 0 to 10 wt% of the core layer, and wood shavings, which account for the balance, wherein the wood shavings with a sieve value of ~+ 12 meshes may account for the highest percentage of the total weight of the wood shavings in the core layer, that is, the wood shavings with ~+ 12 meshes account for the highest percentage of the total weight of the wood shavings in the core layer, compared with the wood shavings with other meshes, that is, the wood shavings with a sieve value of ~+ 12 meshes account for the highest percentage of the total weight of the wood shavings in the core layer are larger than the wood shavings with other sieve values, which individually account for the total weight of the wood shavings in the core layer, for:
65 percent of wood shavings with the mesh of- +12,
18 percent of wood shavings with-12 to +20 meshes,
12 percent of wood shavings with minus 20 to plus 40 meshes,
5 percent of wood shavings with minus 40 to plus 60 meshes,
wherein, the percentage is the percentage of the wood shavings with corresponding meshes relative to the total weight of the wood shavings of the core layer.
The auxiliary agent can be one of a waterproof agent, a mildew preventive, a preservative and a flame retardant.
According to an exemplary embodiment, the wood strands of the wood strands having a sieve size of-40 to +60 mesh may comprise 42 to 46 percent of the total weight of the surface layer wood strands.
According to an exemplary embodiment, the wood strands having a sieve value of +12 mesh may comprise 60% to 70% of the total weight of the core wood strands.
For example, the strand screen values for the surface wood strands and the core wood strands are shown in the following table:
| mesh/number | Size/mm | Core sieve fraction | Surface layer sieve fraction |
| ～+12 | 1.7～4.0 | 60～70％ | ＜2％ |
| -12～+20 | 0.85～1.7 | 12～20％ | 3～7％ |
| -20～+40 | 0.425～0.85 | 8～13％ | 21～25％ |
| -40～+60 | 0.25～0.425 | 2～10％ | 42～46％ |
| -60～+80 | 0.18～0.25 | 0％ | 21～25％ |
| -80～+100 | 0.15～0.18 | 0％ | 3～5％ |
| -100～ | ＜0.15 | 0％ | 1％ |
It should be noted that "- + 12" means that a 12-mesh sieve cannot pass, "-12- + 20" means that a 12-mesh sieve can pass but a 20-mesh sieve cannot pass, "-20- + 40" means that a 20-mesh sieve can pass but a 40-mesh sieve cannot pass, "-40- + 60" means that a 40-mesh sieve can pass but a 60-mesh sieve cannot pass, "-60- + 80" means that a 60-mesh sieve can pass but an 80-mesh sieve cannot pass, "-80- + 100" means that an 80-mesh sieve can pass but a 100-mesh sieve cannot pass, and "— 100-" means that a 100-mesh sieve can pass.
The data in the table show that the dimension of the core layer wood shavings is larger, and the dimension of the surface layer wood shavings is smaller, for example, in the surface layer wood shavings, the wood shavings with the sieving value of-40 to +60 meshes account for the highest percentage of the total weight of the surface layer wood shavings, and reach 42-46%; in the core layer wood shavings, the wood shavings with the screening value of ~+ 12 meshes account for the highest percentage of the total weight of the core layer wood shavings, and reach 60-70%. Through designing such screen grading value, on the one hand, the surface quality that panel can be guaranteed to wooden shavings fine material for the top layer is better, and on the other hand, the intensity that panel can be guaranteed to panel accords with national standard with wooden shavings coarse material for the sandwich layer.
It should be noted that the moisture content of the wood shavings needs to be controlled within a reasonable range, so that the quality problems of cracking, deformation and the like of the plate can not occur. Specifically, the moisture content of the surface layer wood shavings may be 11% -13% of the total weight of the surface layer wood shavings, and/or the moisture content of the core layer wood shavings may be 6% -8% of the total weight of the core layer wood shavings. In one example, the final board moisture content of the manufactured artificial board is 5% to 8%.
In addition, the weight ratio of the surface wood strands to the core wood strands needs to be within a reasonable range. The bonding strength of the board is reduced with the increase of the weight ratio of the surface layer wood shavings to the core layer wood shavings, but the density of the board is also reduced, so the weight ratio of the surface layer wood shavings to the core layer wood shavings can be 3: 7-6: 4, for example, the weight ratio of the surface layer wood shavings to the core layer wood shavings can be 5: 5. In this proportion, not only can the cost be saved, but also the quality of the plate can be better.
The adhesive used for the artificial board can be isocyanate adhesive. The isocyanate adhesive does not contain formaldehyde and does not release formaldehyde, and is an environment-friendly adhesive.
The glue application amount of the surface layer of the artificial board is different from that of the core layer, specifically, the glue application amount of the surface layer wood shavings can be 3-4% of the total weight of the surface layer wood shavings, and/or the glue application amount of the core layer wood shavings can be 2.5-3.0% of the total weight of the core layer wood shavings.
According to the requirements of national standard GB/T4897-2015 of particle boards; according to the test method for the physical and chemical properties of the artificial board and the veneer artificial board GB/T17657-2013, the physical and chemical property indexes manufactured by the exemplary manufacturing method are as follows:
thickness: 18mm
Density: 700kg/m3Left and right
Internal bonding strength: 0.55 to 0.70MPa
Table bond strength: 1.0 to 1.20MPa
Static bending strength: 19 to 21MPa
Modulus of elasticity: 2200-2400 MPa
Screw holding force: the plate surface is 1150-1300N, and the plate edge is 700-800N
Water absorption thickness expansion rate of 2 h: 2.0 to 4.0 percent
Formaldehyde emission: no measurement was made.
According to the physical and chemical performance indexes measured, the physical and chemical performance indexes of the wood shaving board manufactured by the manufacturing method of the embodiment of the invention meet the requirements of national standards, and most physical and chemical performance indexes (such as bonding strength) are greatly higher than the national standards.
According to another exemplary embodiment of the present invention, the artificial board may comprise an upper surface layer 31, a core layer 32 and a lower surface layer 33, wherein the core layer 32 may comprise wood shavings and the upper surface layer 31 and/or the lower surface layer 33 may comprise wood in "fiber" form, i.e. wood fibers.
For example, as in the above embodiments, the core layer may include 2 to 8 wt% of the adhesive, 0 to 10 wt% of the auxiliary agent, and the balance wood fiber, and the wood fiber with a sieve value of +12 mesh may be the highest percentage of the total weight of the wood fiber of the core layer.
The screen fraction of the wood strands, the components of the adhesive and the sizing amount, the components of the auxiliary agent, etc. of the core layer may be the same as those in the above embodiments, and are not described herein again, and the differences from the above embodiments are described in detail below.
In this embodiment, the surface layer may include an adhesive agent in an amount of 3 to 8 wt% of the surface layer, an auxiliary agent in an amount of 0 to 10 wt% of the surface layer, and the balance wood fibers.
As an example, the screening values of the wood fibres are shown in the following table:
| mesh/number | Screening value | Examples of the screening value |
| ～+5 | 0～1％ | 0.25％ |
| -25～+5 | 21～25％ | 23％ |
| -45～+25 | 27～35％ | 27％ |
| -80～+45 | 16～20％ | 16.8％ |
| -120～+80 | 9～11％ | 9.5％ |
| -120～ | 14～25％ | 23.45％ |
As can be seen from the above table, the top layer of each of the upper and lower surface layers is a fine material composed of wood fibers, wherein at least 99% by weight of the fibers in the fine material of the upper surface layer can pass through a 5-mesh standard screen and/or at least 99% by weight of the fibers in the fine material of the lower surface layer can pass through a 5-mesh standard screen.
For example, the fibers may be prepared by peeling, chipping, washing, poaching, hot-milling, drying, and the like, and then sorted and sized for paving to form the surface layer of the wood-based panel.
According to the requirements of national standard GB/T4897-2015 of particle boards; according to the test method for the physical and chemical properties of the artificial board and the veneer artificial board GB/T17657-2013, the physical and chemical property indexes manufactured by the exemplary manufacturing method are as follows:
thickness: 18mm
Density: 710kg/m3Left and right
Internal bonding strength: 0.6 to 0.8MPa
Table bond strength: 1.4 to 1.7MPa
Static bending strength: 19 to 21MPa
Modulus of elasticity: 2200 to 2500MPa
Screw holding force: 1200-1400N plate surface and 750-850N plate edge
Water absorption thickness expansion rate of 2 h: 1.5 to 3.0 percent
Formaldehyde emission: no measurement was made.
The surface of the artificial board is prepared by adopting the fibers, so that the surface quality of the artificial board can be further improved, and the processing performance of the surface of the artificial board is improved.
It should also be noted that, in the case of the embodiments of the present invention, features of the embodiments and examples may be combined with each other to obtain a new embodiment without conflict.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention is subject to the scope of the claims.
Claims (3)
1. A wooden shaving board comprises an upper surface layer, a core layer and a lower surface layer, and is characterized in that,
the upper skin layer comprises:
an adhesive accounting for 3-8 wt% of the upper surface layer;
an auxiliary agent accounting for 0-10 wt% of the upper surface layer; and
the balance of wood shavings, wherein the wood shavings with the screen value of-40 to +60 meshes account for the highest percentage of the total weight of the wood shavings on the upper surface layer;
the core layer includes:
an adhesive accounting for 2-8 wt% of the core layer;
an auxiliary agent accounting for 0-10 wt% of the core layer; and
the balance of wood shavings, wherein the wood shavings with the screening value of ~+ 12 meshes account for the highest percentage of the total weight of the core layer wood shavings, and the water content of the core layer wood shavings is 6% -8% of the total weight of the core layer wood shavings; and
the lower skin layer comprises:
an adhesive accounting for 3-8 wt% of the lower surface layer;
an auxiliary agent accounting for 0-10 wt% of the lower surface layer; and
the balance of wood shavings, wherein the wood shavings with the screen value of-40 to +60 meshes account for the highest percentage of the total weight of the wood shavings on the lower surface layer;
the screening value of the wood strands in the upper surface layer and/or the lower surface layer is:
the wood shavings with the mesh of- +12 are less than 2 percent,
3 to 7 percent of wood shavings with minus 12 to plus 20 meshes,
21 to 25 percent of wood shavings with minus 20 to plus 40 meshes,
42 to 46 percent of wood shavings with minus 40 to plus 60 meshes,
21 to 25 percent of wood shavings with minus 60 to plus 80 meshes,
3 to 5 percent of wood shavings with minus 80 to plus 100 meshes,
1% of wood shavings of-100 meshes,
wherein, the percentage is the percentage of the wood shavings with corresponding mesh number relative to the total weight of the wood shavings of the upper surface layer or the lower surface layer;
the screening value of the core layer wood shavings is as follows:
60 to 70 percent of wood shavings of- +12 meshes,
12 to 20 percent of wood shavings with 12 to 20 meshes,
8 to 13 percent of wood shavings with minus 20 to plus 40 meshes,
2 to 10 percent of wood shavings with minus 40 to plus 60 meshes,
wherein, the percentage is the percentage of the wood shavings with corresponding meshes relative to the total weight of the wood shavings of the core layer.
2. The wood particle board of claim 1, wherein said adhesive is an isocyanate adhesive.
3. The wood particle board of claim 1, wherein said wood strands consist of one wood strand or a mixture of wood strands.
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| CN201711302870.4A CN108177208B (en) | 2017-12-08 | 2017-12-08 | Wooden shaving board and wooden artificial board |
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| CN201711302870.4A CN108177208B (en) | 2017-12-08 | 2017-12-08 | Wooden shaving board and wooden artificial board |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693378A (en) * | 2009-10-22 | 2010-04-14 | 北京林业大学 | Shaving board with corrosion resistance function and process for preparation |
| CN104070591A (en) * | 2014-07-09 | 2014-10-01 | 万华生态板业研究设计（烟台）有限公司 | Artificial board made of crop straw and method for manufacturing artificial board made of crop straw |
| CN104227819A (en) * | 2014-08-15 | 2014-12-24 | 东营正和木业有限公司 | Preparation method for reed fiber particle board |
| CN105583937A (en) * | 2015-12-10 | 2016-05-18 | 万华生态板业股份有限公司 | Production method for producing formaldehyde-free fruity particle boards through fruit tree branches and non-formaldehyde adhesives |
-
2017
- 2017-12-08 CN CN201711302870.4A patent/CN108177208B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693378A (en) * | 2009-10-22 | 2010-04-14 | 北京林业大学 | Shaving board with corrosion resistance function and process for preparation |
| CN104070591A (en) * | 2014-07-09 | 2014-10-01 | 万华生态板业研究设计（烟台）有限公司 | Artificial board made of crop straw and method for manufacturing artificial board made of crop straw |
| CN104227819A (en) * | 2014-08-15 | 2014-12-24 | 东营正和木业有限公司 | Preparation method for reed fiber particle board |
| CN105583937A (en) * | 2015-12-10 | 2016-05-18 | 万华生态板业股份有限公司 | Production method for producing formaldehyde-free fruity particle boards through fruit tree branches and non-formaldehyde adhesives |
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