CN108162519B - Longitudinal reinforced orthogonal laminated wood and manufacturing method thereof - Google Patents
Longitudinal reinforced orthogonal laminated wood and manufacturing method thereof Download PDFInfo
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- CN108162519B CN108162519B CN201711187358.XA CN201711187358A CN108162519B CN 108162519 B CN108162519 B CN 108162519B CN 201711187358 A CN201711187358 A CN 201711187358A CN 108162519 B CN108162519 B CN 108162519B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
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- 239000000463 material Substances 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 5
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- 238000000034 method Methods 0.000 abstract description 11
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- 238000005452 bending Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/02—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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/10—Next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/12—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board next to a particulate layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/14—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
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- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Architecture (AREA)
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Abstract
The invention discloses a longitudinally-reinforced orthogonal laminated wood and a manufacturing method thereof, belongs to the technical field of building engineering, and solves the defects of the existing orthogonal laminated wood technology, namely the problems that for a large-block orthogonal laminated wood structure, a reinforcing steel bar cannot be punched to penetrate through the whole body to be arranged in a material, and the overall performance of wood is damaged due to the complex process of slotting. The longitudinal reinforced orthogonal laminated wood uses a hollow shaving board as a carrier for bearing reinforcing steel bars to manufacture a reinforcing body, and then the reinforcing body is directly integrally formed and glued with sawn timber to manufacture the longitudinal reinforced orthogonal laminated wood. The manufacturing method comprises the steps of gluing, combining, assembling and pressing respectively. The longitudinally reinforced orthogonal laminated wood manufactured by the invention has simple process, one-step hot press molding, no need of drilling and grooving, no damage to the integrity of the member, improved mechanical property, connection strength and rigidity, reduced quality of the orthogonal laminated wood member, material saving and better popularization value.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a longitudinal reinforced orthogonal laminated wood and a manufacturing method thereof.
Background
Orthogonal laminated wood (CLT) is a prefabricated solid engineering wood product formed by vertically and orthogonally laminating at least 3 layers of solid sawn wood or structural composite materials (SCL), can be used for manufacturing wood structure roofs, floors and walls, and is a suitable substitute for materials such as concrete, masonry, steel and the like. The CLT wood structure system is a novel wood structure system which takes CLT floor slabs, wall plates and roof slabs as main bearing components, has the advantages of high prefabrication rate, high construction speed, convenience in construction, good earthquake resistance, energy conservation, environmental protection and the like, is suitable for middle-high-rise wood structure buildings, and has potential economic competitiveness.
The CLT has the characteristic of isotropy relative to the grain laminated wood, has good mechanical property and dimensional stability, and can not meet the requirement of large-span engineering or the construction requirement of medium-high-rise buildings due to the fact that the number of the same layers of grain layers is reduced along the direction of the CLT grain.
Therefore, how to provide a longitudinally reinforced orthogonal laminated wood which can save the wood consumption and meet the requirements of bearing capacity and bending strength and a manufacturing method thereof is a technical problem which needs to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a longitudinal reinforced orthogonal laminated wood and a manufacturing method thereof. The purpose that the reinforcing steel bar penetrates through the whole member to be reinforced is achieved, the extending part of the reinforcing steel bar can be used for connecting the ends of the member, and the steel bar reinforced composite member has the advantages of being light in weight, high in rigidity, convenient to process and install, saving in materials and reducing in floor weight. And the prefabrication processing can be realized, and the standardized production is formed.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the longitudinally reinforced orthogonal laminated wood comprises sawn timber, a hollow shaving board and reinforcing steel bars, wherein the reinforcing steel bars are arranged in the hollow shaving board in a penetrating mode to form reinforcing bodies, the sawn timber is assembled in a longitudinal direction and a transverse direction to form the orthogonal laminated wood, and the reinforcing bodies are arranged in the longitudinal direction of the orthogonal laminated wood and are assembled with the sawn timber together to form the longitudinally reinforced orthogonal laminated wood.
Furthermore, the reinforcing steel bars penetrate through the hollow shaving board and are tightly connected with the hollow shaving board through adhesive.
Furthermore, the hollow shaving board is provided with holes penetrating through the whole length, the diameter of each hole is matched with the diameter of the corresponding reinforcing steel bar and is larger than the diameter of each reinforcing steel bar by 1-3 mm, and the reinforcing steel bars can penetrate through the holes.
Further, the reinforcing body is arranged on the bottom layer or the penultimate layer in the longitudinal direction of the sawn timber.
Further, the length of the reinforcement body and the number of the hollow particle boards are determined by the length of the longitudinal reinforced orthogonal plywood, and the width of the reinforcement body is formed by the hollow particle boards penetrating at least one reinforcing bar.
Further, the adhesive is epoxy resin adhesive, resorcinol adhesive or polyurethane adhesive.
The invention also provides a manufacturing method of the longitudinal reinforced orthogonal laminated wood, which comprises the following steps:
step one, sizing: cleaning the surface of the steel bar, sticking the prepared adhesive by using a brush, uniformly brushing the surface of the treated steel bar and irregularly brushing the surface of the treated steel bar for a plurality of times to form a coating layer;
step two, combination: inserting the steel bar coated with the adhesive into the hole of the hollow particle board matched with the diameter of the steel bar in a penetrating manner, and curing to obtain a reinforcing body;
step three, assembling: assembling orthogonal laminated wood, placing the reinforcement body between the bottom layer or the penultimate layer of sawn timber in the longitudinal direction of the sawn timber, and laying the sawn timber according to a symmetry principle and an orthogonal principle;
step four, pressing: and (4) performing pressure forming on the assembled material to prepare the longitudinal reinforced orthogonal laminated wood.
Further, the thickness of the coating layer is 1 mm-2 mm.
Compared with the prior art, the invention has the following advantages and beneficial effects:
firstly, aiming at the defects of the existing orthogonal laminated wood technology, the invention adopts a method without punching and grooving, uses a hollow shaving board as a carrier for bearing reinforcing steel bars to prepare a reinforcing body, and then directly integrally forms and glues the reinforcing body and sawn wood to prepare the longitudinal reinforced orthogonal laminated wood. The longitudinally-reinforced orthogonal laminated wood provided by the invention has the advantages that the integrity of the orthogonal laminated wood is not damaged, the built-in steel bars penetrate through the inside of the whole orthogonal laminated wood member, the integral rigidity and the connection strength of the orthogonal laminated wood member are improved, the dynamic load and the earthquake load are resisted, the weight of the orthogonal laminated wood member is reduced, the wood consumption is reduced, and the resources are saved.
And secondly, the manufacturing method of the longitudinal reinforced orthogonal laminated wood provided by the invention is used for directly integrally forming and gluing the reinforcing body made of the steel bar and the hollow shaving board and the sawn timber to manufacture the longitudinal reinforced orthogonal laminated wood through gluing, combining, assembling and pressing links. The manufacturing method has the following advantages: the hot press forming process is convenient to process and install, simple in process, free of perforating and grooving and free of damaging the integrity of a component, and can be used for hot press forming at one time; the stress performance is good, the reinforcing steel bar can penetrate through the full length of the orthogonal laminated wood member and can be used for connecting adjacent orthogonal laminated wood members, the mechanical property, the connection strength and the rigidity of the orthogonal laminated wood member can be improved, the quality of the orthogonal laminated wood member is reduced, and the material is saved; thirdly, the hollow particle board is fully utilized as a carrier of the reinforcement body, so that the manufacturing efficiency is improved, and the resources are saved.
Drawings
The longitudinally reinforced cross-glued wood and the method for manufacturing the same according to the invention are given in the following examples and figures.
Fig. 1 is a schematic structural view of a reinforcement body in the longitudinally reinforced orthogonal laminated wood of the present invention.
FIG. 2 is a schematic view of the construction of the assembly of the present invention in a longitudinally reinforced cross-glued wood.
Fig. 3 is a schematic view of the construction of the longitudinally reinforced orthogonal laminated wood of the present invention.
FIG. 4 is a longitudinal cross-sectional view of a longitudinally reinforced cross-glued wood of the present invention.
In the figure, 11-steel bar, 12-hollow flakeboard, 20-sawn timber and 30-longitudinal reinforced orthogonal glued wood.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Referring to fig. 1 to 4, the structural components of the longitudinally reinforced orthogonal glued wood of the present invention will be described in detail.
Example one
Referring to fig. 1 to 4, a longitudinally reinforced orthogonal laminated wood includes a sawn timber 20, a hollow particle board 12 and a reinforcing bar 11, wherein the reinforcing bar 11 is penetratingly disposed in the hollow particle board 12 to form a reinforcing body, the sawn timber 20 is orthogonally assembled in a longitudinal direction and a transverse direction to form the orthogonal laminated wood, and the reinforcing body is disposed in the longitudinal direction of the orthogonal laminated wood and assembled together with the sawn timber 20 to form a longitudinally reinforced orthogonal laminated wood 30.
Specifically, in order to overcome the disadvantages of the conventional orthogonal laminated wood technology, the reinforcement bars 11 are glued, embedded into the holes of the hollow particle board 12, the reinforcement bars 11 penetrate through the hollow particle board 12, a reinforcement body is formed according to the length of the orthogonal laminated wood member, the sawn timber 20 is orthogonally assembled into the orthogonal laminated wood along the longitudinal direction and the transverse direction, the reinforcement body is arranged in the longitudinal direction of the orthogonal laminated wood and is assembled with the sawn timber 20 together, and the longitudinal reinforced orthogonal laminated wood 30 with the built-in reinforcement bars is formed. Therefore, the longitudinally reinforced orthogonal laminated wood provided by the invention does not damage the integrity of the orthogonal laminated wood, and the built-in steel bars penetrate through the inside of the whole orthogonal laminated wood member, so that the overall rigidity and the connection strength of the orthogonal laminated wood member are improved, the dynamic load and the earthquake load are resisted, and the application of larger span is realized. The longitudinally-reinforced orthogonal laminated wood provided by the embodiment of the invention improves the longitudinal bearing capacity and the bending strength of the member while reducing the weight of the member, can reduce the using amount of wood, saves resources and has better popularization value.
Specifically, the reinforcing bars 11 are inserted through the hollow particle board 12 and are tightly coupled to the hollow particle board 12 by an adhesive. That is to say, hollow shaving board 12 has the hole that runs through full length, and the diameter phase-match of hole diameter and reinforcing bar 11, and the hole diameter of hollow shaving board 12 is greater than reinforcing bar diameter 1mm ~ 3mm, and reinforcing bar 11 can pass the hole of hole hollow shaving board 12 to make reinforcing bar 11 and hollow shaving board form an organic whole structure promptly and reinforce the body through the gluing agent.
Of course, the adhesive may be a structural adhesive such as epoxy resin adhesive (EPX), resorcinol adhesive (PRF), or polyurethane adhesive (PUR).
Preferably, the invention provides a longitudinal reinforced orthogonal laminated wood, which is formed by embedding steel bars 11 into holes of a hollow particle board 12 to form a reinforcing body, simultaneously, sawing materials 20 are orthogonally assembled into the orthogonal laminated wood along the longitudinal direction and the transverse direction, the reinforcing body is arranged in the longitudinal direction of the orthogonal laminated wood, a bottom layer or a penultimate layer in the longitudinal direction of the sawing materials of the orthogonal laminated wood is arranged, the reinforcing body and the sawing materials are assembled together to be glued, and the longitudinal reinforced orthogonal laminated wood is formed by pressing. Of course, the reinforcement can meet the reinforcement requirements and connection requirements of different strengths of the orthogonal plywood by adjusting the length of the steel bars 11 and the number of holes, the positions of the reinforcements and the number of the reinforcements of the hollow particle board 12.
Certainly, in order to meet the reinforcement requirement of longitudinally reinforced orthogonal laminated wood, the thickness of the hollow shaving board 12 in the embodiment is 20mm to 40mm, hollow through holes are uniformly arranged in the board core, the aperture is 15mm to 35mm, the hole spacing is 2mm to 8mm, and the distance from the through holes to the surface of the board is 2mm to 8 mm; the diameter of the steel bar 11 is 12 mm-32 mm; the sawn timber 20 has a thickness of 16 mm-51 mm and a width of 60 mm-240 mm, and generally needs to be graded and dried to reach a water content of 12% +/-3%.
Example two
With continuing reference to fig. 1 and 2, the present embodiment provides a method for manufacturing a longitudinally reinforced orthogonal laminated wood according to the present invention, the method comprising the steps of:
step S1 sizing: cleaning the surface of the steel bar 11, adhering the prepared adhesive by using a brush, uniformly brushing the surface of the treated steel bar and irregularly brushing the surface of the treated steel bar for a plurality of times till the adhesive is coated on the periphery of the surface of the steel bar and the thickness of the adhesive is 1-2 mm; and simultaneously planing the sawn timber 20 and gluing the surface, and determining a gluing mode and gluing parameters according to the type of the selected adhesive to glue, so as to form a coating layer.
Step S2 combines: inserting the steel bars 11 coated with the adhesive into holes of a hollow shaving board 12 matched with the diameter of the steel bars in a penetrating manner, and curing the steel bars to obtain a reinforcing body; the length of the steel bar is 200 mm-400 mm longer than the longitudinal length of the orthogonal laminated wood, and 100 mm-200 mm is reserved at two ends of the hollow particle board 12 to be used as the connection of the orthogonal laminated wood. The length of the hollow shaving board 12 in the hole direction is equal to the longitudinal length of the orthogonal laminated wood, the length of the hollow shaving board can be spliced by penetrating through the reinforcing steel bars 11, and the width of the hollow shaving board is determined according to the number of holes required by the reinforcing steel bar quantity.
Step S3 assembling: assembling orthogonal laminated wood, wherein the outermost two layers are longitudinal, placing the reinforcement body between the last but one layer of longitudinal sawn timber 20, and laying the sawn timber 20 according to the symmetry principle and the orthogonal principle; the number of the layers is odd as much as possible, and the number of the layers can also be even, and 3-7 layers are common. The reinforcement is typically placed on the outermost layer of the cross-glued wood, usually in the penultimate layer in the longitudinal direction of the sawn timber as a flexural tension layer in order to maintain the aesthetics and performance of the material.
Step S4 pressure: the assembled material is press-formed to produce a longitudinally reinforced orthogonal laminated wood 30.
In summary, the longitudinally reinforced orthogonal laminated wood and the manufacturing method thereof provided by the invention adopt a method without punching and grooving, use a hollow shaving board as a carrier for bearing reinforcing steel bars to manufacture the reinforcing body, and then directly carry out integral gluing and molding on the reinforcing body and sawn timber to manufacture the longitudinally reinforced orthogonal laminated wood. The longitudinal reinforced orthogonal laminated wood manufactured by the manufacturing method achieves the purpose that the reinforcing steel bar penetrates through the whole member for reinforcement, and the protruding part of the reinforcing steel bar can be used for connecting the end heads of the member, so that the longitudinal reinforced orthogonal laminated wood has the advantages of light weight, high rigidity, convenience in processing and installation, material saving and floor slab weight reduction. And the prefabrication processing can be realized, the standardized production is formed, and the popularization value is better.
The above description is only illustrative of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications of the above disclosure by those skilled in the art are within the scope of the appended claims.
Claims (8)
1. The longitudinally reinforced orthogonal laminated wood is characterized by comprising sawn timber, a hollow shaving board and reinforcing steel bars, wherein the reinforcing steel bars are arranged in the hollow shaving board in a penetrating mode to form reinforcing bodies, the sawn timber is assembled in an orthogonal mode in the longitudinal direction and the transverse direction to form the orthogonal laminated wood, and the reinforcing bodies are arranged in the longitudinal direction of the orthogonal laminated wood and assembled with the sawn timber together to form the longitudinally reinforced orthogonal laminated wood.
2. The longitudinally reinforced orthogonal plywood of claim 1 wherein said reinforcing bars are inserted through the hollow particle board and are adhesively secured to the hollow particle board.
3. The longitudinally reinforced orthogonal laminated wood according to claim 1, wherein the hollow particle board has holes extending through the entire length thereof, the holes having a diameter matching the diameter of the reinforcing bars and being 1mm to 3mm larger than the diameter of the reinforcing bars, the reinforcing bars being capable of passing through the holes.
4. The longitudinally reinforced orthogonal laminated wood according to claim 1, wherein the reinforcement is disposed at a bottom layer or a penultimate layer in a longitudinal direction of the sawn timber.
5. The longitudinally reinforced cross laminated wood of claim 1, wherein the length of the reinforcement bodies and the number of the hollow core particle boards are determined by the length of the longitudinally reinforced cross laminated wood, and the width of the reinforcement bodies is formed by the hollow core particle boards penetrating at least one reinforcing bar.
6. The longitudinally reinforced orthogonal laminated wood of claim 2, wherein the adhesive is an epoxy adhesive, a resorcinol adhesive, or a polyurethane adhesive.
7. The method of manufacturing a longitudinally reinforced orthogonal plywood according to any one of claims 1 to 6, comprising the steps of:
step one, sizing: cleaning the surface of the steel bar, sticking the prepared adhesive by using a brush, uniformly brushing the surface of the treated steel bar and irregularly brushing the surface of the treated steel bar for a plurality of times to form a coating layer;
step two, combination: inserting the steel bar coated with the adhesive into the hole of the hollow particle board matched with the diameter of the steel bar in a penetrating manner, and curing to obtain a reinforcing body;
step three, assembling: assembling orthogonal laminated wood, placing the reinforcement body between the bottom layer or the penultimate layer of sawn timber in the longitudinal direction of the sawn timber, and laying the sawn timber according to a symmetry principle and an orthogonal principle;
step four, pressing: and (4) performing pressure forming on the assembled material to prepare the longitudinal reinforced orthogonal laminated wood.
8. The manufacturing method according to claim 7, wherein the thickness of the coating layer is 1mm to 2 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711187358.XA CN108162519B (en) | 2017-11-24 | 2017-11-24 | Longitudinal reinforced orthogonal laminated wood and manufacturing method thereof |
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| CN201711187358.XA CN108162519B (en) | 2017-11-24 | 2017-11-24 | Longitudinal reinforced orthogonal laminated wood and manufacturing method thereof |
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| CN108162519A CN108162519A (en) | 2018-06-15 |
| CN108162519B true CN108162519B (en) | 2020-02-18 |
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|---|---|---|---|---|
| US11084245B2 (en) | 2019-01-09 | 2021-08-10 | Six Minutes LLC | Cross-laminated timber having a conduit therein |
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| CN108162519A (en) | 2018-06-15 |
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