CN114872163A - Production method of low-formaldehyde light shaving board - Google Patents
Production method of low-formaldehyde light shaving board Download PDFInfo
- Publication number
- CN114872163A CN114872163A CN202111567553.1A CN202111567553A CN114872163A CN 114872163 A CN114872163 A CN 114872163A CN 202111567553 A CN202111567553 A CN 202111567553A CN 114872163 A CN114872163 A CN 114872163A
- Authority
- CN
- China
- Prior art keywords
- wood shavings
- shavings
- wood
- low
- core layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title abstract description 17
- 239000002023 wood Substances 0.000 claims abstract description 76
- 239000012792 core layer Substances 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000007731 hot pressing Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 19
- 239000002344 surface layer Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000012188 paraffin wax Substances 0.000 claims description 10
- 239000004793 Polystyrene Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229920002223 polystyrene Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004794 expanded polystyrene Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 abstract description 5
- 230000000704 physical effect Effects 0.000 abstract description 3
- 229920006248 expandable polystyrene Polymers 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 5
- 238000005034 decoration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012993 chemical processing Methods 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a production method of a low-formaldehyde light-weight shaving board, which comprises the following steps: preparing wood shavings, drying, mixing glue, paving, prepressing and hot-pressing, and changing the common wood shavings of the core layer into a mixed material of foamed polystyrene and wood shavings on the basis of the existing production process of the shaving board; the usage amount of UF resin is reduced, the formaldehyde content is reduced, the integral physical property of the plate is improved, and the density can be manufactured
Description
Technical Field
The invention relates to the technical field of artificial boards, relates to production of shaving boards, and particularly relates to a production method of a low-formaldehyde light shaving board.
Background
The traditional artificial board is a board which is formed by taking wood or other non-wood plant fibers as raw materials, separating the raw materials into various unit materials through mechanical crushing or chemical processing, and then applying (or not applying) adhesives and other additives for hot pressing. Because the density of most wood is more than 0.5g/cm 3 And the density of most adhesives exceeds 1.0g/cm 3 The density of the board pressed by mixing is difficult to be less than 0.6g/cm 3 The numerical value of (c). In recent years, the market for lightweight low-formaldehyde panels has grown in demand due to the rise in the architectural decoration and custom furniture industries. Many applications for wood-based panels do not require the panels to have a high density, but rather require the panels to be lightweight.
The light shaving board is the product of the traditional artificial board in the wood science and technology which is continuously improved in the development process, and the density is 0.30
0.45g/cm 3 The particle board is light and soft in material, low in formaldehyde, proper in strength, and has certain water resistance and good stability. At present, the density of the domestic shaving board is 0.65
0.8g/cm 3 The method is applied to the fields of customized furniture, architectural decoration, vehicle and ship decoration and manufacture and the like. However, the shaving board in the density range is difficult to carry and process, has poor dimensional stability, consumes a large amount of wood and glue, and is far away from the increasingly required green environmental-friendly board.
The lightweight particle board is fluffy inside, so that the board has good sound insulation, heat insulation and machining performance. The technology for manufacturing the light shaving board by the traditional process is not mature at present, and the light shaving board is produced by improving the production process by using the light materials as raw materials.
Disclosure of Invention
The invention aims to provide a method for producing low-formaldehyde light weight chipboard, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a production method of low-aldehyde light-weight particle boards comprises the following steps:
A. preparing wood shavings: the surface layer is common wood shavings, and the core layer shavings are wood shavings and expanded polystyrene;
B. and (3) drying: drying the shavingsUntil the water content is 1.5
2.5％；
C. Glue mixing: applying oven-dried strands to dried surface strands 8
10% of MUF resin, solids content 50
56 percent and 1 percent
1.5% of emulsified paraffin, the mass of the core layer wood shavings applied to the absolute dry core layer wood shavings is 0
3% of MUF resin, solids content 60
66% and 1
1.5% molten paraffin, 0.3% curing agent:
D. paving and prepressing: paving the glued material into a plate blank with uniform thickness according to the surface-core-surface and then prepressing;
E. hot pressing: subjecting the pre-pressed mat to a temperature of 170
190 ℃ and 1.0MPa
Hot pressing 7 under 1.8MPa
Obtaining the light-weight shaving board after 10min, preferably at 180 ℃, under 1.2MPa and for 8 min.
In a preferred embodiment of the invention, the plane of step A isThe length of the wood shavings is 3
30mm, 0.5 mm wide
3mm and 0.5 mm in thickness
1.5mm。
In the preferred embodiment of the invention, the polystyrene in the step A accounts for 15 mass of the core layer wood shavings
25 percent of wood core layer wood shavings by mass 75
85％。
In a preferred embodiment of the present invention, the surface layer shavings in step C are wood fine shavings, and the mass of the surface layer shavings accounts for 20% of the total mass of the shavings
30 percent of the core layer wood shavings, the weight of the core layer wood shavings accounts for 70 percent of the total weight of the wood shavings
80％。
In a preferred embodiment of the invention, the MUF resin in the step C is prepared by self.
In a preferred embodiment of the invention, the core strands of step C are applied with a substantially dry core strand mass of 0
3% MUF resin (homemade), use 0
3% MUF resin (homemade, solids content 60)
66%) impregnated wood shavings.
In the preferred disclosed example of the invention, the curing agent in the step C is a 20% chlorinated string solution.
Has the advantages that:
the invention has the beneficial effects that: the invention provides a production method of a low-formaldehyde light shaving board, which takes light materials as raw materials and produces the light shaving board after improving the production process. On the basis of the existing shaving board production process, common wood shavings of the core layer are changed into a mixed material of expanded polystyrene and shavings; the usage amount of UF resin is reduced, the formaldehyde content is reduced, the overall physical property of the plate is improved, and the density of the plate can be manufactured to be 0.30
0.45g/cm 3 And the physicochemical indexes of the light-weight shaving board meet the national standard requirements.
Detailed Description
The technical solution of the present patent will be further described in detail with reference to the following embodiments.
Example 1
A production method of low-aldehyde light-weight particle boards comprises the following steps:
A. preparing wood shavings: the surface layer is common wood crushed particle wood shavings, the core layer wood shavings and polystyrene are crushed, sliced and screened into wood shavings with specified dimensions, wherein the polystyrene accounts for 20% of the mass of the core layer wood shavings, and the wood shavings account for 80% of the mass of the core layer wood shavings;
B. and (3) drying: drying the material until the water content is 2.0%;
C. glue mixing: applying MUF resin (solid content: 53.5%) and 1% emulsified paraffin to the dried surface layer shavings, applying MUF resin (solid content: 3%), 1% molten paraffin and 0.3% curing agent (20% chlorinated string solution) to the core layer shavings, wherein the weight of the dried surface layer shavings is 8% of that of the oven-dried shavings;
D. paving and prepressing: the surface layer wood shavings account for 20 percent of the total weight of the wood shavings, and the core layer wood shavings account for 80 percent of the total weight of the wood shavings; according to the board density of 0.45g/cm 3 Setting paving weight, paving the slabs according to the surface-core-surface paving mode to form slabs with uniform thickness, and then prepressing the slabs at room temperature:
E. hot pressing: and hot-pressing the pre-pressed plate blank at 190 ℃ and 1.2MPa for 9min to obtain the light shaving board.
The final particle board produced in this example had a density of 0.44g/cm 3 。
Example 2
A production method of low-aldehyde light-weight particle boards comprises the following steps:
A. preparing wood shavings: the surface layer is common wood crushed particle shavings, the core layer shavings are shavings with specified size, polystyrene accounts for 20%, and the mass of the wood shavings core layer shavings is 80%;
B. and (3) drying: drying the material until the water content is 2.0%;
C. glue mixing: applying MUF resin (solid content: 53.5%) and 1% emulsified paraffin to the dried surface layer shavings, applying MUF resin (solid content: 2%) and 1% molten paraffin to the core layer shavings, and applying curing agent (20% chlorinated string solution) to the core layer shavings;
D. paving and prepressing: the mass of the surface layer wood shavings accounts for 25% of the total weight of the wood shavings, and the mass of the core layer wood shavings accounts for 75% of the total weight of the wood shavings; according to the board density of 0.40g/cm 3 Setting paving weight, paving the pavement according to a table-core-table mode to form a plate blank with uniform thickness, and then prepressing the plate blank at room temperature;
E. hot pressing: and hot-pressing the pre-pressed plate blank at 185 ℃ and 1.2MPa for 8min to obtain the light shaving board.
The final particle board produced in this example had a density of 0.39g/cm 3 。
Example 3
A production method of low-aldehyde light-weight particle boards comprises the following steps:
A. preparing wood shavings: the surface layer is common wood crushed particle wood shavings, the core layer wood shavings and polystyrene are crushed, sliced and screened into wood shavings with specified dimensions, wherein the polystyrene accounts for 20% of the mass of the core layer wood shavings, and the wood shavings account for 80% of the mass of the core layer wood shavings;
B. and (3) drying: drying the material until the water content is 2.0%;
C. glue mixing: applying MUF resin (solid content: 53.5%) and 1% emulsified paraffin to the dried surface layer shavings, applying MUF resin (solid content: 0%), 1% molten paraffin and 0.3% curing agent (20% chlorinated string solution) to the core layer shavings, wherein the weight of the dried surface layer shavings is 10% of that of the oven-dried shavings;
D. paving and prepressing: the surface layer wood shavings account for 30 percent of the total weight of the wood shavings, and the core layer wood shavings account for 70 percent of the total weight of the wood shavings; according to the board density of 0.35g/cm 3 Setting paving weight, paving the slabs according to the surface-core-surface paving mode to form slabs with uniform thickness, and then prepressing the slabs at room temperature:
E. hot pressing: and hot-pressing the pre-pressed plate blank at the temperature of 180 ℃ and the pressure of 1.2MPa for 7min to obtain the light shaving board.
The final particle board produced in this example had a density of 0.34g/cm 3 。
The invention provides a production method of a low-formaldehyde light shaving board, which takes light materials as raw materials and produces the light shaving board after improving the production process. On the basis of the existing shaving board production process, common wood shavings of the core layer are changed into a mixed material of expanded polystyrene and shavings; the usage amount of UF resin is reduced, the formaldehyde content is reduced, and the overall physical properties of the board are improved. Can be manufactured with a density of 0.30
0.45g/cm 3 And the physicochemical indexes of the light-weight shaving board meet the national standard requirements.
The embodiments described above are preferred embodiments of the present invention, and not all embodiments. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (7)
1. The production method of the low-aldehyde light-weight particle board is characterized by comprising the following steps of:
A. preparing wood shavings: the surface layer is common wood shavings, and the core layer shavings are wood shavings and expanded polystyrene;
B. and (3) drying: drying the wood shaving material to water content
C. Glue mixing: applying oven-dried wood shaving quality to dried surface wood shavings
MUF resin of (2), solid content
And
emulsified paraffin, core layer wood shavings applying absolutely dry core layer wood shavings quality
MUF resin of (2), solid content
And
molten paraffin, 0.3% curing agent:
D. paving and prepressing: paving the glued material into a plate blank with uniform thickness according to the surface-core-surface and then prepressing;
E. hot pressing: subjecting the pre-pressed slab to a temperature
Pressure of
Bottom hot pressing
Thus obtaining the light shaving board.
2. A method of producing a low-aldehyde lightweight particle board as set forth in claim 1, wherein: step A, the wood shavings are long
Width of
Is thick and thick
3. A method of producing a low-aldehyde lightweight particle board as set forth in claim 1, wherein: step A. the polystyrene accounts for the mass of the core layer wood shavings
Of wood core wood shavings
4. A method of producing a low-aldehyde lightweight particle board as set forth in claim 1, wherein: c, the surface layer wood shavings are wood fine material wood shavings, and the mass of the surface layer wood shavings accounts for the mass of the total wood shavings
The mass of the core layer wood shavings accounts for the total wood shavings mass
5. A method of producing a low-aldehyde light weight particle board as claimed in claim 1, wherein: and step C, the MUF resin is self-made.
6. A method of producing a low-aldehyde lightweight particle board as set forth in claim 1, wherein: step C, applying absolute dry core layer shaving quality to the core layer shaving
MUF resin (self-made) of (2) and use
Resin (self-made, solids content)
) And (4) impregnating wood shavings.
7. A method of producing a low-aldehyde lightweight particle board as set forth in claim 1, wherein: and in the step C, the curing agent is 20% chlorinated string solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567553.1A CN114872163A (en) | 2021-12-21 | 2021-12-21 | Production method of low-formaldehyde light shaving board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567553.1A CN114872163A (en) | 2021-12-21 | 2021-12-21 | Production method of low-formaldehyde light shaving board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114872163A true CN114872163A (en) | 2022-08-09 |
Family
ID=82666613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111567553.1A Pending CN114872163A (en) | 2021-12-21 | 2021-12-21 | Production method of low-formaldehyde light shaving board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114872163A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099328A (en) * | 1994-03-16 | 1995-03-01 | 郭柏林 | Light shaving board and its producing process |
| CN102020862A (en) * | 2011-01-07 | 2011-04-20 | 福建农林大学 | Light wood plastic composite and manufacturing method thereof |
| CN203738953U (en) * | 2014-01-26 | 2014-07-30 | 昌吉州锐通木业有限公司 | Composite shaving board |
| CN104786342A (en) * | 2015-04-24 | 2015-07-22 | 东北林业大学 | Wood composite board with low-density sandwich-type structure and preparation method thereof |
| CN104802229A (en) * | 2015-03-30 | 2015-07-29 | 广西宾阳县荣良新材料科技有限公司 | Cabinet board and manufacturing method thereof |
| CN107671979A (en) * | 2017-09-14 | 2018-02-09 | 大亚人造板集团有限公司 | A kind of production method of light particleboard |
-
2021
- 2021-12-21 CN CN202111567553.1A patent/CN114872163A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099328A (en) * | 1994-03-16 | 1995-03-01 | 郭柏林 | Light shaving board and its producing process |
| CN102020862A (en) * | 2011-01-07 | 2011-04-20 | 福建农林大学 | Light wood plastic composite and manufacturing method thereof |
| CN203738953U (en) * | 2014-01-26 | 2014-07-30 | 昌吉州锐通木业有限公司 | Composite shaving board |
| CN104802229A (en) * | 2015-03-30 | 2015-07-29 | 广西宾阳县荣良新材料科技有限公司 | Cabinet board and manufacturing method thereof |
| CN104786342A (en) * | 2015-04-24 | 2015-07-22 | 东北林业大学 | Wood composite board with low-density sandwich-type structure and preparation method thereof |
| CN107671979A (en) * | 2017-09-14 | 2018-02-09 | 大亚人造板集团有限公司 | A kind of production method of light particleboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5134026A (en) | Process for manufacturing a compression-moulded synthetic resin object and fabricated material for use in said process | |
| CN103481348B (en) | Integral reinforced solid wood section bar and manufacturing method thereof | |
| PL185507B1 (en) | Method of making semi-finished products or formipieces of cellulose and/or cellulose-containing fibrous materials | |
| CN102922587B (en) | Method for manufacturing medium-density fiberboard in inorganic gluing | |
| CN107671979A (en) | A kind of production method of light particleboard | |
| CN102504557A (en) | Low-density wood-plastic composite shaving board and manufacture method thereof | |
| CN108908646B (en) | High-strength bamboo wood and oriented strand board composite board and preparation method thereof | |
| CN107083818A (en) | A kind of floor high-strength environment-friendly bamboo and woods fiber sheet material and preparation method thereof | |
| CN106113212A (en) | A kind of high-strength shaving board and preparation method thereof | |
| CN102152370A (en) | Wood-bamboo composite shaving board and production technique thereof | |
| CN104175382B (en) | A kind of production technology of modified fibre sheet material | |
| CN102166772B (en) | Processing method for producing high-grade yacht material with black-white spacing stripes by using moso bamboo | |
| CN102490233A (en) | Manufacture method for bamboo wood composite boards | |
| CN113246258A (en) | High-strength bamboo recombined material with bamboo bionic structure and preparation method thereof | |
| CN103624859B (en) | Expanded perlite low-density laminated particle-board and manufacture method thereof | |
| CN102166773B (en) | Processing method for producing top-grade yacht material with black and white interval stripes by utilizing small wood | |
| CN105034126A (en) | Method for pressing high-performance reconsolidated wood | |
| CN102229158A (en) | Anaglyptic wooden board and manufacturing method thereof | |
| CN107297809A (en) | A kind of particieboard hot-press method | |
| CN114872163A (en) | Production method of low-formaldehyde light shaving board | |
| CN104910640A (en) | Wood-plastic plate and preparation method thereof | |
| CN106738112A (en) | A kind of heavy wood material suppressed with veneer and preparation method thereof | |
| CN102777762A (en) | Ecological composite plate | |
| CN109465941A (en) | A kind of extremely-low density composite fiber plate and its manufacturing method | |
| CN114919031A (en) | Pre-pressed ultrathin large shaving board composite block board capable of facing and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220809 |