CN110509365A - A kind of method that fast growing wood processing waste material prepares the wooden base of upholstery - Google Patents
A kind of method that fast growing wood processing waste material prepares the wooden base of upholstery Download PDFInfo
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- CN110509365A CN110509365A CN201910785249.0A CN201910785249A CN110509365A CN 110509365 A CN110509365 A CN 110509365A CN 201910785249 A CN201910785249 A CN 201910785249A CN 110509365 A CN110509365 A CN 110509365A
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- Prior art keywords
- plate
- processing
- fast growing
- injecting glue
- sawdust
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
- B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
- B27K3/36—Aliphatic compounds
-
- 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
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- 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
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The present invention relates to the wooden base preparation technical fields, the method that especially a kind of fast growing wood processing waste material prepares the wooden base of upholstery, including the processing of compression processing, injecting glue, dipping process, ripening, production pearlite slab, assembly processing, hot-pressing processing and the several steps of moditied processing；The present invention is prepared into injecting glue compression plate and impregnation plate by sawdust in processing fast growing wood and waste material respectively, and with aluminum oxide abrasion-proof paper assembly, and it is hot-forming, be finally prepared to the wooden base, take full advantage of fast growing wood waste material, avoid the waste of material；In addition, the wooden base of preparation has recycling property, use cost, but also energy conservation and environmental protection are not only saved；Also there is preferable heat insulation fire retardant simultaneously.
Description
Technical field
The present invention relates to the wooden base preparation technical fields more particularly to a kind of fast growing wood processing waste material to prepare upholstery
With the method for the wooden base.
Background technique
Fast-growing wood species refer to fast growth, morning of becoming a useful person, the period of felling in turn short trees kind, and China common are deep gloomy Chinese scholartree, poplar
Tree, eucalyptus, willow etc., for the timber made of these quick growing species of trees fast growing wood, usual quality is softer, is typically used as papermaking, builds
It builds, plate core material raw material etc., also has part for manufacturing furniture, but all have to make timber some processing, such as pass through degreasing
Drying is converted to high-quality plate；However, a large amount of waste material and sawdust can be generated in the process of fast growing wood, and these are useless
Material and sawdust are typically chosen burning, cannot get reasonable utilization, will cause certain waste in this way；In addition, currently, interior decoration
The wood-base materials of product are generally plastics, and can not recycle, and lead to use cost height.
Summary of the invention
The purpose of the present invention is to solve the shortcomings that fast growing wood waste material can not be utilized rationally exists in the prior art, and mention
The method that a kind of fast growing wood processing waste material out prepares the wooden base of upholstery.
To achieve the goals above, present invention employs following technical solutions:
A kind of method that fast growing wood processing waste material prepares the wooden base of upholstery is designed, is included the following steps；
Step 1: compression processing；Waste material and sawdust after collecting fast growing wood processing, sawdust is imported in sawdust compressor, will
Sawdust is compressed into the form of plate body；
Step 2: injecting glue processing；First sawdust compression plate is dried in vacuo, water-soluble epoxy resin is then sucked and carries out
High-pressure injection plastic, so that water-soluble epoxy resin penetrates into sawdust compression plate, so that the structure of sawdust compression plate is more stable, from
And obtain injecting glue plate；
Step 3: dipping process；By fast growing wood waste material by way of cutting equipment is processed into thin plate, then by thin plate into
Row drying, then dry fast growing wood thin plate is put into water-soluble epoxy resin and carries out Dipping, so that soluble epoxide tree
Rouge penetrates into fast growing wood thin plate, finally obtains impregnation thin plate；
Step 4: ripening；Injecting glue plate and impregnation thin plate are put into aging tank and carry out ripening, it is specific to implement
Steps are as follows；
A, prepare aging tank, and multiple ventilation equipment are installed in the outside of Chen Huachi, heating equipment regulates and controls inside aging tank
Temperature；
B, injecting glue plate and impregnation thin plate are put into aging tank, are uniformly spread out, guarantee injecting glue plate and impregnation sheet top surface and
The ventilation effect of bottom surface is identical；
C, a period of time is stood, so that injecting glue plate and impregnation thin plate are aged completely；
Step 5: production pearlite slab, specific implementation steps are as follows:
(1), prepare perlite powder, crushed crude pearlite and sawdust are put into mixing plant, are sufficiently mixed；
(2), fire prevention bonding agent is added into the mixture of crushed crude pearlite and sawdust, continues starting mixing plant and is mixed
It closes；
Step 6: assembly processing；By after aluminum oxide abrasion-proof paper, ageing injecting glue plate and impregnation thin plate carry out assembly,
In, aluminum oxide abrasion-proof paper is set to top layer and lowest level, and the inside of aluminum oxide abrasion-proof paper is arranged in pearlite slab, thus
Obtain slab；
Step 7: hot-pressing processing；The slab formed in step 5 is put into hot-press equipment and carries out hot-pressing processing, to obtain
Molding wood-based panel；
Step 8: moditied processing；Molding wood-based panel obtained in step 6 is subjected to surface polishing and cutting edge processing, finally
Obtain the wooden base of finished product.
Preferably, in step 2, the injecting glue process of sawdust compression plate is carried out in high-pressure injection plastic tank, specific real
It is as follows to apply process:
Firstly, by evacuated pressure 0.06MPa-0.07MPa in high-pressure injection plastic tank, and suck water-soluble epoxy resin；
Then, after water-soluble epoxy resin is totally submerged sawdust compression plate, pressure-air is passed through into high-pressure injection plastic tank
Carry out high-pressure injection plastic, wherein the pressure of pressure-air is 1.5MPa-2.5Mpa；
Finally；So that water-soluble epoxy resin is fully impregnated into inside sawdust compression plate, injecting glue plate is obtained.
Preferably, in step 3, fast growing wood thin plate is in water-soluble epoxy resin in soaking process, soaking time 10-
30 minutes.
Preferably, in step 4, for the temperature control in aging tank at 20-30 degrees Celsius, digestion time is 6-10 minutes,
Air velocity is greater than 1m/s.
Preferably, in steps of 5, the injecting glue plate after aluminum oxide abrasion-proof paper, ageing and impregnation thin plate be from top to bottom
Sequence be one layer of aluminum oxide abrasion-proof paper, even level ageing after injecting glue plate, one layer ageing after impregnation thin plate and one layer
Aluminum oxide abrasion-proof paper.
Preferably, in step 6, in hot-pressing processing, the hot pressing temperature of hot-press equipment is 80-100 degrees Celsius, hot pressing pressure
Power is 2Mpa-5 Mpa, and the hot pressing time of every millimeter of slab is 2-8 minutes.
The method that a kind of fast growing wood processing waste material proposed by the present invention prepares the wooden base of upholstery, beneficial effect exist
In:
1, the sawdust and waste material of the invention by processing fast growing wood is prepared into injecting glue compression plate and impregnation plate respectively, and
It is and hot-forming with aluminum oxide abrasion-proof paper assembly, it is finally prepared to the wooden base, fast growing wood waste material is taken full advantage of, avoids
The waste of material；In addition, the wooden base of preparation has recycling property, use cost, but also energy conservation and environmental protection are not only saved；
2, pearlite slab has heat insulation fire retardant, because perlite is natural peral rock ore in sand form, through 1300 DEG C or more high temperature
The perlite that swells is formed in a flash, and construction is in the particle spherical of hollow honeycomb, to reach heat insulation；Pearlite slab is also
With waterproof, not aging and corrosion resistant effect, and light weight, heat-insulating and sound-absorbing effect are good.
Detailed description of the invention
Fig. 1 is the process for the method that a kind of fast growing wood processing waste material proposed by the present invention prepares the wooden base of upholstery
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1, a kind of method that fast growing wood processing waste material prepares the wooden base of upholstery, includes the following steps；
Step 1: compression processing；Waste material and sawdust after collecting fast growing wood processing, sawdust is imported in sawdust compressor, will
Sawdust is compressed into the form of plate body；
Step 2: injecting glue processing；First sawdust compression plate is dried in vacuo, water-soluble epoxy resin is then sucked and carries out
High-pressure injection plastic, so that water-soluble epoxy resin penetrates into sawdust compression plate, so that the structure of sawdust compression plate is more stable, from
And obtain injecting glue plate, wherein the injecting glue process of sawdust compression plate is carried out in high-pressure injection plastic tank, and specific implementation process is such as
Under:
Firstly, by evacuated pressure 0.06MPa-0.07MPa in high-pressure injection plastic tank, and suck water-soluble epoxy resin；
Then, after water-soluble epoxy resin is totally submerged sawdust compression plate, pressure-air is passed through into high-pressure injection plastic tank
Carry out high-pressure injection plastic, wherein the pressure of pressure-air is 1.5MPa-2.5Mpa；
Finally；So that water-soluble epoxy resin is fully impregnated into inside sawdust compression plate, injecting glue plate is obtained；
Step 3: dipping process；By fast growing wood waste material by way of cutting equipment is processed into thin plate, then by thin plate into
Row drying, then dry fast growing wood thin plate is put into water-soluble epoxy resin and carries out Dipping, soaking time is 10-30 points
Clock finally obtains impregnation thin plate so that water-soluble epoxy resin penetrates into fast growing wood thin plate；
Step 4: ripening；Injecting glue plate and impregnation thin plate are put into aging tank and carry out ripening, it is specific to implement
Steps are as follows；
A, prepare aging tank, and multiple ventilation equipment are installed in the outside of Chen Huachi, heating equipment regulates and controls inside aging tank
Temperature, the temperature in aging tank controls at 20-30 degrees Celsius；
B, injecting glue plate and impregnation thin plate are put into aging tank, are uniformly spread out, guarantee injecting glue plate and impregnation sheet top surface and
The ventilation effect of bottom surface is identical, and air velocity is greater than 1m/s；
C, a period of time is stood, so that injecting glue plate and impregnation thin plate are aged completely, digestion time is 6-10 minutes；
Step 5: production pearlite slab, specific implementation steps are as follows:
(1), prepare perlite powder, crushed crude pearlite and sawdust are put into mixing plant, are sufficiently mixed；
(2), fire prevention bonding agent is added into the mixture of crushed crude pearlite and sawdust, continues starting mixing plant and is mixed
It closes；
Step 6: assembly processing；By after aluminum oxide abrasion-proof paper, ageing injecting glue plate and impregnation thin plate carry out assembly,
In, aluminum oxide abrasion-proof paper is set to top layer and lowest level, and the inside of aluminum oxide abrasion-proof paper is arranged in pearlite slab, thus
Slab is obtained, the sequence from top to bottom of injecting glue plate and impregnation thin plate after aluminum oxide abrasion-proof paper, ageing is one layer of three oxygen
The impregnation thin plate and one layer of aluminum oxide abrasion-proof paper after injecting glue plate, one layer of ageing after changing two aluminium abrasion-proof papers, even level ageing；
Step 7: hot-pressing processing；The slab formed in step 5 is put into hot-press equipment and carries out hot-pressing processing, hot-press equipment
Hot pressing temperature be 80-100 degrees Celsius, hot pressing pressure 2Mpa-5Mpa, and the hot pressing time of every millimeter of slab be 2-8 minutes,
To obtain molding wood-based panel；
Step 8: moditied processing；Molding wood-based panel obtained in step 6 is subjected to surface polishing and cutting edge processing, finally
Obtain the wooden base of finished product.
The present invention is prepared into injecting glue compression plate and impregnation plate by sawdust in processing fast growing wood and waste material respectively, and and
Aluminum oxide abrasion-proof paper assembly, and it is hot-forming, it is finally prepared to the wooden base, fast growing wood waste material is taken full advantage of, avoids material
The waste of material；In addition, the wooden base of preparation has recycling property, use cost, but also energy conservation and environmental protection are not only saved；Pearlite slab
With heat insulation fire retardant, because perlite is natural peral rock ore in sand form, the pearl that swells is formed in a flash through 1300 DEG C or more high temperature
Rock, construction is in the particle spherical of hollow honeycomb, to reach heat insulation；Pearlite slab also have waterproof, not aging and
Corrosion resistant effect, and light weight, heat-insulating and sound-absorbing effect are good.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of method that fast growing wood processing waste material prepares the wooden base of upholstery, which is characterized in that include the following steps；
Step 1: compression processing；Waste material and sawdust after collecting fast growing wood processing, sawdust are imported in sawdust compressor, by sawdust
It is compressed into the form of plate body；
Step 2: injecting glue processing；First sawdust compression plate is dried in vacuo, water-soluble epoxy resin is then sucked and carries out high pressure
Injecting glue, so that water-soluble epoxy resin penetrates into sawdust compression plate, so that the structure of sawdust compression plate is more stable, thus
To injecting glue plate；
Step 3: dipping process；By fast growing wood waste material by way of cutting equipment is processed into thin plate, then thin plate is done
It is dry, then dry fast growing wood thin plate is put into water-soluble epoxy resin and carries out Dipping, so that water-soluble epoxy resin seeps
Thoroughly into fast growing wood thin plate, impregnation thin plate is finally obtained；
Step 4: ripening；Injecting glue plate and impregnation thin plate are put into aging tank and carry out ripening, specific implementation steps
It is as follows；
A, prepare aging tank, and multiple ventilation equipment are installed in the outside of Chen Huachi, heating equipment regulates and controls the temperature inside aging tank
Degree；
B, injecting glue plate and impregnation thin plate are put into aging tank, are uniformly spread out, guarantee injecting glue plate and impregnation sheet top surface and bottom surface
Ventilation effect it is identical；
C, a period of time is stood, so that injecting glue plate and impregnation thin plate are aged completely；
Step 5: production pearlite slab, specific implementation steps are as follows:
(1), prepare perlite powder, crushed crude pearlite and sawdust are put into mixing plant, are sufficiently mixed；
(2), fire prevention bonding agent is added into the mixture of crushed crude pearlite and sawdust, continues starting mixing plant and is mixed；
(3), the mixed material stirred evenly is taken out, is then pressed by high-pressure machinery mold, last depanning simultaneously carries out
Drying process obtains pearlite slab.
Step 6: assembly processing；By the injecting glue plate and impregnation thin plate progress assembly after aluminum oxide abrasion-proof paper, ageing, wherein
Aluminum oxide abrasion-proof paper is set to top layer and lowest level, and the inside of aluminum oxide abrasion-proof paper is arranged in pearlite slab, thus
To slab；
Step 7: hot-pressing processing；The slab formed in step 5 is put into hot-press equipment and carries out hot-pressing processing, to be formed
Wood-based panel；
Step 8: moditied processing；Molding wood-based panel obtained in step 6 is subjected to surface polishing and cutting edge processing, is finally obtained
The wooden base of finished product.
2. the method that a kind of fast growing wood processing waste material according to claim 1 prepares the wooden base of upholstery, special
Sign is that in step 2, the injecting glue process of sawdust compression plate is carried out in high-pressure injection plastic tank, and specific implementation process is such as
Under:
Firstly, by evacuated pressure 0.06MPa-0.07MPa in high-pressure injection plastic tank, and suck water-soluble epoxy resin；
Then, after water-soluble epoxy resin is totally submerged sawdust compression plate, pressure-air progress is passed through into high-pressure injection plastic tank
High-pressure injection plastic, wherein the pressure of pressure-air is 1.5MPa-2.5Mpa；
Finally, being fully impregnated into water-soluble epoxy resin inside sawdust compression plate, injecting glue plate is obtained.
3. the method that a kind of fast growing wood processing waste material according to claim 1 prepares the wooden base of upholstery, special
Sign is that in step 3, for fast growing wood thin plate in water-soluble epoxy resin in soaking process, soaking time is 10-30 minutes.
4. the method that a kind of fast growing wood processing waste material according to claim 1 prepares the wooden base of upholstery, special
Sign is that in step 4, the temperature control in aging tank is at 20-30 degrees Celsius, and digestion time is 6-10 minutes, air velocity
Greater than 1m/s.
5. the method that a kind of fast growing wood processing waste material according to claim 1 prepares the wooden base of upholstery, special
Sign is that in steps of 5, the sequence from top to bottom of injecting glue plate and impregnation thin plate after aluminum oxide abrasion-proof paper, ageing is
One layer of aluminum oxide abrasion-proof paper, even level ageing after injecting glue plate, one layer ageing after impregnation thin plate and one layer three oxidation two
Aluminium abrasion-proof paper.
6. the method that a kind of fast growing wood processing waste material according to claim 1 prepares the wooden base of upholstery, special
Sign is that in step 6, in hot-pressing processing, the hot pressing temperature of hot-press equipment is 80-100 degrees Celsius, and hot pressing pressure is
2Mpa-5Mpa, and the hot pressing time of every millimeter of slab is 2-8 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910785249.0A CN110509365A (en) | 2019-08-23 | 2019-08-23 | A kind of method that fast growing wood processing waste material prepares the wooden base of upholstery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910785249.0A CN110509365A (en) | 2019-08-23 | 2019-08-23 | A kind of method that fast growing wood processing waste material prepares the wooden base of upholstery |
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| CN110509365A true CN110509365A (en) | 2019-11-29 |
Family
ID=68627469
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Citations (6)
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|---|---|---|---|---|
| CN102179842A (en) * | 2011-03-01 | 2011-09-14 | 南京林业大学 | Impregnation densified veneer enhanced laminated veneer lumber and a manufacturing method thereof |
| CN202073453U (en) * | 2011-03-24 | 2011-12-14 | 王仁忠 | Solid wood composite door core material with crossed stacked structure |
| CN102877556A (en) * | 2012-06-08 | 2013-01-16 | 青岛科瑞新型环保材料有限公司 | Novel wall body heat preservation core plate and production method thereof |
| CN105014766A (en) * | 2015-07-12 | 2015-11-04 | 北华大学 | Floor surface board and manufacturing method thereof |
| CN105082269A (en) * | 2015-08-24 | 2015-11-25 | 湖南桃花江实业有限公司 | Wood base composite and manufacturing method thereof |
| EP3247809A1 (en) * | 2015-01-20 | 2017-11-29 | University Of York | Microwave assisted hydrothermal pre-treatment of cellulosic material to produce fermentable mixtures |
-
2019
- 2019-08-23 CN CN201910785249.0A patent/CN110509365A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179842A (en) * | 2011-03-01 | 2011-09-14 | 南京林业大学 | Impregnation densified veneer enhanced laminated veneer lumber and a manufacturing method thereof |
| CN202073453U (en) * | 2011-03-24 | 2011-12-14 | 王仁忠 | Solid wood composite door core material with crossed stacked structure |
| CN102877556A (en) * | 2012-06-08 | 2013-01-16 | 青岛科瑞新型环保材料有限公司 | Novel wall body heat preservation core plate and production method thereof |
| EP3247809A1 (en) * | 2015-01-20 | 2017-11-29 | University Of York | Microwave assisted hydrothermal pre-treatment of cellulosic material to produce fermentable mixtures |
| CN105014766A (en) * | 2015-07-12 | 2015-11-04 | 北华大学 | Floor surface board and manufacturing method thereof |
| CN105082269A (en) * | 2015-08-24 | 2015-11-25 | 湖南桃花江实业有限公司 | Wood base composite and manufacturing method thereof |
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Application publication date: 20191129 |