CN110614681A - Method for preparing composite staggered laminated timber by adopting bamboo laminated timber and standard timber - Google Patents
Method for preparing composite staggered laminated timber by adopting bamboo laminated timber and standard timber Download PDFInfo
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- CN110614681A CN110614681A CN201910998054.4A CN201910998054A CN110614681A CN 110614681 A CN110614681 A CN 110614681A CN 201910998054 A CN201910998054 A CN 201910998054A CN 110614681 A CN110614681 A CN 110614681A
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- laminated
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 183
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 183
- 241001330002 Bambuseae Species 0.000 title claims abstract description 183
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 183
- 239000011425 bamboo Substances 0.000 title claims abstract description 183
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002023 wood Substances 0.000 claims abstract description 151
- 239000000853 adhesive Substances 0.000 claims abstract description 30
- 230000001070 adhesive effect Effects 0.000 claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 28
- 239000000835 fiber Substances 0.000 claims description 21
- 239000002344 surface layer Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920002522 Wood fibre Polymers 0.000 claims description 6
- 239000012948 isocyanate Substances 0.000 claims description 6
- 150000002513 isocyanates Chemical class 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 6
- 239000002025 wood fiber Substances 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims 1
- 229920001568 phenolic resin Polymers 0.000 claims 1
- 239000012792 core layer Substances 0.000 description 6
- 244000283070 Abies balsamea Species 0.000 description 3
- 235000007173 Abies balsamea Nutrition 0.000 description 3
- 239000002648 laminated material Substances 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- -1 phenolic aldehyde Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
Abstract
A method for preparing a composite staggered laminated timber by adopting bamboo laminated timber and standard timber is characterized by comprising the following steps: the laminated bamboo board (1) and the laminated wood board (2) are assembled at an angle of 0-180 degrees, an adhesive (3) is used for connecting adjacent boards, pressure is applied to the upper surface and the side surface of the composite staggered laminated wood, the applied pressure is removed after the adhesive (3) is cured and continuously pressurized for a certain time, and finally the blank board is sent to a cutting workshop for processing and then is packed and put in storage. The invention adopts the bamboo laminated wood and the standard wood which are formed by taking the bamboo chips as units to prepare the composite orthogonal laminated wood, and aims to improve various mechanical performance indexes of the composite orthogonal laminated wood by utilizing the good mechanical performance of the bamboo laminated wood.
Description
Technical Field
The invention relates to a method for preparing a composite staggered laminated timber by adopting bamboo laminated timber and standard timber, which is applied to beam, plate and column members in timber structure buildings and bridges and belongs to the field of structural engineering.
Background
The staggered laminated wood is also called Cross-laminated wood (CLT for short), is a new type of prefabricated engineering wood product in the world, and is formed by assembling at least 3 layers of solid wood sawn timber or structural composite boards at a certain angle, and gluing with a structural adhesive or nailing with nails. China has abundant bamboo resources, and bamboo engineering materials made of bamboo are increasingly applied to practical engineering. The bamboo Laminated wood (LVB) is used as one of bamboo engineering materials, and has good mechanical property and environmental protection compared with other bamboo engineering materials. For example, in the chinese patent "201822150276.4," a Bamboo-wood composite orthogonal laminated wood made of Bamboo splits "is disclosed, in which a Bamboo curtain/Bamboo mat plywood (BWP) made of Bamboo splits as units is used together with a wood material to prepare the Bamboo-wood composite orthogonal laminated wood, and the composite orthogonal laminated wood has characteristics and advantages of both Bamboo and wood. Similarly, the invention provides the composite orthogonal laminated wood prepared from the bamboo laminated wood and the wood standard wood which are formed by taking the bamboo chips as units, and the composite orthogonal laminated wood has the characteristics of mechanical properties of bamboo and wood and is more environment-friendly and attractive.
Disclosure of Invention
The invention adopts the bamboo laminated wood and the standard wood which are formed by taking the bamboo chips as units to prepare the composite orthogonal laminated wood, and aims to improve various mechanical performance indexes of the composite orthogonal laminated wood by utilizing the good mechanical performance of the bamboo laminated wood.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for preparing a composite staggered laminated timber by adopting bamboo laminated timber and standard timber is characterized by comprising the following steps: the method comprises the following steps of assembling a bamboo laminated wood laminate 1 and a wood specification material laminate 2 at an angle of 0-180 degrees, connecting adjacent laminates by using an adhesive 3, applying pressure on the upper surface and the side surface of the composite staggered laminated wood, removing the applied pressure after the adhesive 3 is cured and continuously pressurized for a certain time, and finally sending a blank plate into a cutting workshop for processing, packaging and warehousing, wherein the method specifically comprises the following steps:
1) processing the bamboo laminated wood and the standard wood: arranging bamboo chips forming the bamboo laminated wood in a certain form, cutting the bamboo chips after sizing and pressure curing processes, sanding the surface of the bamboo chips, cutting the standard wood into a certain length, sanding the standard wood to a certain thickness, wherein the thickness of the bamboo laminated wood laminated plate 1 is less than or equal to that of the wood standard wood laminated plate 2;
2) assembling and sizing: the laminated bamboo board 1 and the laminated wood board 2 are assembled at an angle of 0-180 degrees, the laminated wood board 2 is assembled at a certain interval, and an adhesive 3 is applied after each layer of laminated board is laid;
3) pressurizing: after assembling and gluing, pressurizing the blank by adopting one of a cold pressing process and a hot pressing process;
4) cutting, packaging and warehousing: and (4) conveying the blank plate into a cutting workshop for processing, packaging and warehousing.
The method for preparing the composite staggered laminated wood by adopting the bamboo laminated wood and the standard wood is characterized in that the laminated board 1 of the bamboo laminated wood is one of bamboo chip side-pressed bamboo laminated wood, bamboo chip side-pressed layers and laminated layers sequentially staggered with the bamboo laminated wood, each layer of bamboo chips forming the bamboo laminated wood are placed in the same bamboo fiber direction, and the angle of the bamboo fiber of the bamboo chips in the adjacent layers is 0-180 degrees.
The method for preparing the composite staggered laminated timber by adopting the bamboo laminated timber and the standard timber is characterized in that the thickness of bamboo chips in a laminated board 1 of the bamboo laminated timber is 2-10 mm, and the width of the bamboo chips is 5-25 mm.
The method for preparing the composite staggered laminated wood by adopting the bamboo laminated wood and the standard wood is characterized in that the surface layer of the composite staggered laminated wood is a bamboo laminated wood laminate 1, the rest layers are wood standard wood laminates 2, the included angle between the bamboo fiber on the surface layer of the adjacent bamboo laminated wood laminate 1 and the wood fiber in the wood standard wood laminate 2 is 0-180 degrees, and the included angle between the wood fiber in the adjacent wood standard wood laminate 2 is 0-180 degrees.
The method for preparing the composite staggered laminated timber by adopting the bamboo laminated timber and the standard timber is characterized in that the adhesive 3 is one of a phenolic aldehyde adhesive (PRF), a polyurethane adhesive (PUR) and an isocyanate adhesive (EPI), and the effective bonding area between the laminated timber is more than or equal to 80 percent of the total contact area between the laminated timber.
The invention has the following beneficial effects:
(1) the product is green and environment-friendly, and has beautiful appearance;
(2) the mechanical properties of bamboo and wood are fully exerted;
description of the drawings:
FIG. 1 is a flow chart of a method of making the present invention;
FIG. 2 is a schematic perspective view of a composite interleaved laminated lumber according to the present invention;
FIG. 3 is a schematic end view of the first embodiment of the present invention;
FIG. 4 is a schematic end view of a second embodiment of the present invention;
FIG. 5 is a schematic end view of a third embodiment of the present invention;
FIG. 6 is a schematic end view of a fourth embodiment of the present invention;
FIG. 7 is a schematic end view of a fifth embodiment of the present invention;
FIG. 8 is a schematic end view of a sixth embodiment of the present invention;
the specific implementation mode is as follows:
in order to more clearly understand the technical features, objects and effects of the present invention, embodiments of the present invention will now be described with reference to fig. 1 to 2. The invention adopts the bamboo laminated wood and the standard wood which are formed by taking the bamboo chips as units to prepare the composite orthogonal laminated wood, and aims to improve various mechanical performance indexes of the composite orthogonal laminated wood by utilizing the good mechanical performance of the bamboo laminated wood.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for preparing a composite staggered laminated timber by adopting bamboo laminated timber and standard timber is characterized by comprising the following steps: the method comprises the following steps of assembling a bamboo laminated wood laminate 1 and a wood specification material laminate 2 at an angle of 0-180 degrees, connecting adjacent laminates by using an adhesive 3, applying pressure on the upper surface and the side surface of the composite staggered laminated wood, removing the applied pressure after the adhesive 3 is cured and continuously pressurized for a certain time, and finally sending a blank plate into a cutting workshop for processing, packaging and warehousing, wherein the method specifically comprises the following steps:
1) processing the bamboo laminated wood and the standard wood: arranging bamboo chips forming the bamboo laminated wood in a certain form, cutting the bamboo chips after sizing and pressure curing processes, sanding the surface of the bamboo chips, cutting the standard wood into a certain length, sanding the standard wood to a certain thickness, wherein the thickness of the bamboo laminated wood laminated plate 1 is less than or equal to that of the wood standard wood laminated plate 2;
2) assembling and sizing: the laminated bamboo board 1 and the laminated wood board 2 are assembled at an angle of 0-180 degrees, the laminated wood board 2 is assembled at a certain interval, and an adhesive 3 is applied after each layer of laminated board is laid;
3) pressurizing: after assembling and gluing, pressurizing the blank by adopting one of a cold pressing process and a hot pressing process;
4) cutting, packaging and warehousing: and (4) conveying the blank plate into a cutting workshop for processing, packaging and warehousing.
The laminated bamboo board 1 is one of bamboo laminated wood formed by pressing bamboo chips, bamboo chip side pressing layers and laminating layers in sequence and staggered, each layer of bamboo chips forming the laminated bamboo board are placed in the same bamboo fiber direction, and the angle of the bamboo fibers of the bamboo chips in the adjacent layers is 0-180 degrees. The thickness of the bamboo chips in the laminated board 1 of the bamboo laminated wood is 2 mm-10 mm, and the width is 5 mm-25 mm. The surface layer of the composite staggered laminated wood is a bamboo laminated wood laminate 1, the rest layers are wood standard wood laminates 2, the included angle between the bamboo fiber on the surface layer of the adjacent bamboo laminated wood laminate 1 and the wood fiber in the wood standard wood laminate 2 is 0-180 degrees, and the included angle between the wood fiber in the adjacent wood standard wood laminate 2 is 0-180 degrees. The adhesive 3 is one of a phenolic aldehyde adhesive (PRF), a polyurethane adhesive (PUR) and an isocyanate adhesive (EPI), and the effective bonding area between the laminates is more than or equal to 80% of the total contact area between the laminates.
The first embodiment is as follows:
as shown in fig. 3, the laminated bamboo board 1 and the standard wood board 2 are orthogonally assembled into three layers, the laminated bamboo board 1 is positioned on the surface layer, the standard wood board 2 is positioned on the core layer, and polyurethane adhesive is used for connecting the adjacent boards. The laminated bamboo board 1 is made of pure side-pressed laminated bamboo (2 layers). The width of the bamboo chips forming the bamboo laminated wood is 15mm, the thickness of the bamboo chips is 6mm, the fibers in the two layers of side-pressed bamboo chips are parallel to each other, and the fibers of the outermost layer of flat-pressed bamboo chips are parallel to the length direction of the laminated and staggered laminated wood. The wood specification material laminated plate 2 is made of SPF specification materials, and no interval exists between the SPF specification materials. The thickness of the laminated bamboo board 1 after sanding is 18mm, and the thickness of the laminated wood board 2 with the wood specification is 35 mm.
The second embodiment is as follows:
as shown in fig. 4, the laminated bamboo board 1 and the standard wood board 2 are orthogonally assembled into three layers, the laminated bamboo board 1 is positioned on the surface layer, the standard wood board 2 is positioned on the core layer, and the adjacent boards are connected by phenolic adhesive. The laminated bamboo board 1 is made of bamboo chips and laminated bamboo layers which are sequentially staggered to form a laminated bamboo board (3 layers), wherein the bamboo chips are pressed on a core layer of the laminated bamboo board 1. The width of the bamboo chips forming the bamboo integrated material is 15mm, the thickness is 6mm, the fibers in the 3 layers of bamboo chips are parallel to each other, and the fibers of the outermost flat pressed bamboo chips are parallel to the length direction of the laminated and staggered laminated material. The wood-sized material laminated plate 2 is made of larch-sized materials, and no interval exists between the larch-sized materials. The thickness of the laminated bamboo board 1 after sanding is 18mm, and the thickness of the laminated wood board 2 with the wood specification is 30 mm.
The third concrete embodiment:
as shown in fig. 5, the laminated bamboo wood board 1 and the standard wood board 2 are orthogonally assembled into three layers, wherein the laminated bamboo board 1 is positioned on the surface layer, the standard wood board 2 is positioned on the core layer, and the adjacent boards are connected by adopting isocyanate adhesive. The laminated bamboo board 1 is made of bamboo chips and laminated bamboo layers which are sequentially staggered to form a laminated bamboo board (3 layers), wherein the bamboo chips are pressed on a core layer of the laminated bamboo board 1. The width of the bamboo chips forming the bamboo laminated wood is 15mm, the thickness of the bamboo chips is 6mm, the fibers in the 3 layers of bamboo chips are mutually vertical, and the fibers of the outermost flat-pressed bamboo chips are parallel to the length direction of the laminated and staggered laminated wood. The wood-specification material laminated plate 2 is made of hemlock fir-specification materials, and no interval exists between the hemlock-specification materials. The thickness of the laminated bamboo board 1 after sanding is 18mm, and the thickness of the laminated wood board 2 with the wood specification is 35 mm.
The fourth concrete embodiment:
as shown in fig. 6, the laminated bamboo board 1 and the standard wood board 2 are orthogonally assembled into a five-layer structure, the laminated bamboo board 1 is positioned on the surface layer, the rest layers are the standard wood boards 2, and the adjacent boards are connected by phenolic adhesive. The laminated bamboo board 1 is made of bamboo chips and laminated bamboo layers which are sequentially staggered to form a laminated bamboo board (3 layers), wherein the bamboo chips are pressed on a core layer of the laminated bamboo board 1. The width of the bamboo chips forming the bamboo integrated material is 15mm, the thickness is 6mm, the fibers in the 3 layers of bamboo chips are parallel to each other, and the fibers of the outermost flat pressed bamboo chips are parallel to the length direction of the laminated and staggered laminated material. The wood-sized material laminated plate 2 is made of larch-sized materials, and no interval exists between the larch-sized materials. The thickness of the laminated bamboo board 1 after sanding is 18mm, and the thickness of the laminated wood board 2 with the wood specification is 30 mm.
The fifth concrete embodiment:
as shown in fig. 7, the laminated bamboo wood board 1 and the standard wood board 2 are orthogonally assembled into 5 layers, the laminated bamboo board 1 is positioned on the surface layer, and the rest layers are the standard wood boards 2, and the adjacent boards are connected by adopting isocyanate adhesive. The laminated bamboo board 1 is made of bamboo chips and laminated layers which are sequentially staggered to form the laminated bamboo board (5 layers), wherein the bamboo chips subjected to side pressing are positioned on the even layers of the laminated bamboo board 1. The width of the bamboo chips forming the bamboo integrated material is 15mm, the thickness is 5mm, the fibers in 5 layers of bamboo chips are parallel to each other, and the fibers of the outmost flat pressed bamboo chips are parallel to the length direction of the laminated and staggered laminated material. The wood-specification material laminated plate 2 is made of hemlock fir-specification materials, and no interval exists between the hemlock-specification materials. The thickness of the laminated bamboo board 1 after sanding is 18mm, and the thickness of the laminated wood board 2 with the wood specification is 35 mm.
The sixth specific embodiment:
as shown in fig. 8, the laminated bamboo wood board 1 and the standard wood board 2 are orthogonally assembled into 5 layers, the laminated bamboo board 1 is positioned on the surface layer, and the rest layers are the standard wood boards 2, and the adjacent boards are connected by adopting isocyanate adhesive. The laminated bamboo board 1 is made of bamboo chips and laminated layers which are sequentially staggered to form the laminated bamboo board (5 layers), wherein the bamboo chips subjected to side pressing are positioned on the even layers of the laminated bamboo board 1. The width of the bamboo chips forming the bamboo laminated wood is 15mm, the thickness of the bamboo chips is 5mm, the fibers in 5 layers of the bamboo chips are mutually orthogonal, and the fibers of the outermost flat pressed bamboo chips are parallel to the length direction of the laminated and staggered laminated wood. The wood-specification material laminated plate 2 is made of hemlock fir-specification materials, and no interval exists between the hemlock-specification materials. The thickness of the laminated bamboo board 1 after sanding is 18mm, and the thickness of the laminated wood board 2 with the wood specification is 35 mm.
Claims (5)
1. A method for preparing a composite staggered laminated timber by adopting bamboo laminated timber and standard timber is characterized by comprising the following steps: the method comprises the following steps of assembling a bamboo laminated wood laminate (1) and a wood specification material laminate (2) at an angle of 0-180 degrees, connecting adjacent laminates by using an adhesive (3), applying pressure on the upper surface and the side surface of a composite staggered laminated wood, removing the applied pressure after the adhesive (3) is cured and continuously pressurized for a certain time, and finally sending a blank plate into a cutting workshop for processing and then packaging and warehousing, wherein the method specifically comprises the following steps:
1) processing the bamboo laminated wood and the standard wood: arranging bamboo chips forming the bamboo laminated wood in a certain form, cutting the bamboo chips after sizing and pressure curing processes, sanding the surface of the bamboo chips, cutting the standard wood into a certain length, sanding the standard wood to a certain thickness, wherein the thickness of the bamboo laminated wood laminated plate (1) is less than or equal to that of the wood standard wood laminated plate (2);
2) assembling and sizing: the laminated bamboo board (1) and the laminated wood board (2) are assembled at an angle of 0-180 degrees, the laminated wood board (2) is assembled at certain intervals, and an adhesive (3) is applied after each layer of laminated board is laid;
3) pressurizing: after assembling and gluing, pressurizing the blank by adopting one of a cold pressing process and a hot pressing process;
4) cutting, packaging and warehousing: and (4) conveying the blank plate into a cutting workshop for processing, packaging and warehousing.
2. The method of manufacturing a composite cross laminated lumber using a bamboo laminated lumber and a gauge lumber according to claim 1, wherein the laminated board (1) of the bamboo laminated lumber is one of a bamboo chip side-pressed bamboo laminated lumber, a bamboo chip side-pressed layer and a laminated layer sequentially cross the bamboo laminated lumber, each layer of bamboo chips constituting the bamboo laminated lumber are placed in the same bamboo fiber direction, and the angle of the bamboo fiber of the bamboo chip in the adjacent layer is 0 ° to 180 °.
3. The method for preparing the composite cross laminated timber using the bamboo laminated timber and the standard timber as claimed in claim 1, wherein the thickness of the bamboo chips constituting the laminated timber board (1) is 2mm to 10mm and the width is 5mm to 25 mm.
4. The method for preparing the composite staggered laminated wood by using the bamboo laminated wood and the standard wood according to claim 1, wherein the surface layer of the composite staggered laminated wood is a bamboo laminated wood board (1), the rest layers are wood standard wood boards (2), the included angle between the bamboo fiber on the surface layer of the adjacent bamboo laminated wood board (1) and the wood fiber in the wood standard wood board (2) is 0-180 degrees, and the included angle between the wood fiber in the adjacent wood standard wood board (2) is 0-180 degrees.
5. The method for preparing the composite cross laminated timber using the bamboo laminated timber and the gauge timber as claimed in claim 1, wherein the adhesive (3) is one of a phenol formaldehyde adhesive (PRF), a polyurethane adhesive (PUR) and an isocyanate adhesive (EPI), and the effective bonding area between the laminated timber is 80% or more of the total contact area between the laminated timber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910998054.4A CN110614681A (en) | 2019-10-18 | 2019-10-18 | Method for preparing composite staggered laminated timber by adopting bamboo laminated timber and standard timber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910998054.4A CN110614681A (en) | 2019-10-18 | 2019-10-18 | Method for preparing composite staggered laminated timber by adopting bamboo laminated timber and standard timber |
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| CN110614681A true CN110614681A (en) | 2019-12-27 |
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| CN201910998054.4A Withdrawn CN110614681A (en) | 2019-10-18 | 2019-10-18 | Method for preparing composite staggered laminated timber by adopting bamboo laminated timber and standard timber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300578A (en) * | 2020-04-08 | 2020-06-19 | 湘潭市建筑设计院 | Preparation method of side-pressure integrated bamboo-sandwiched fast-growing wood combined column |
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| CN109794995A (en) * | 2019-01-07 | 2019-05-24 | 江苏农林职业技术学院 | A kind of preparation method of the orthogonal composite board of bamboo and wood |
| CN209494166U (en) * | 2018-12-19 | 2019-10-15 | 南京林业大学 | A kind of bamboo and wood compound orthogonal laminated wood made of thin bamboo strips used for weaving |
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| JP2004345299A (en) * | 2003-05-26 | 2004-12-09 | Mitsuba Giken:Kk | Composite glued laminated lumber of bamboo and thinning wood material |
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| CN111300578A (en) * | 2020-04-08 | 2020-06-19 | 湘潭市建筑设计院 | Preparation method of side-pressure integrated bamboo-sandwiched fast-growing wood combined column |
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Application publication date: 20191227 |