WO2009015599A1 - Matériau composé en segments de bambou et son procédé de fabrication - Google Patents

Matériau composé en segments de bambou et son procédé de fabrication Download PDF

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Publication number
WO2009015599A1
WO2009015599A1 PCT/CN2008/071795 CN2008071795W WO2009015599A1 WO 2009015599 A1 WO2009015599 A1 WO 2009015599A1 CN 2008071795 W CN2008071795 W CN 2008071795W WO 2009015599 A1 WO2009015599 A1 WO 2009015599A1
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WO
WIPO (PCT)
Prior art keywords
bamboo
layer
glue
rubber
composite profile
Prior art date
Application number
PCT/CN2008/071795
Other languages
English (en)
Chinese (zh)
Inventor
Yongwei Wu
Original Assignee
Yongwei Wu
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CNA2007100254597A external-priority patent/CN101100075A/zh
Priority claimed from CN200710025460XA external-priority patent/CN101100082B/zh
Priority claimed from CNA2008101236849A external-priority patent/CN101288961A/zh
Application filed by Yongwei Wu filed Critical Yongwei Wu
Publication of WO2009015599A1 publication Critical patent/WO2009015599A1/fr

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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
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/005—Tenderising, e.g. by incising, crushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
    • B27J1/00—Mechanical working of cane or the like
    • 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
    • B32B7/00—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
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material

Definitions

  • the invention relates to the field of processing bamboo, in particular to the flattening step of bamboo in the process of bamboo processing and the flattening process for flattening bamboo bamboo green bamboo and the flattening device thereof.
  • bamboo consists of an outer layer of bamboo green layer, an inner layer of bamboo yellow layer and an intermediate fiber layer.
  • the bamboo green layer contains a large amount of wax, and the bamboo yellow layer contains a large amount of silicone, so it cannot be bonded to other profiles, so When bonding with other profiles, the bamboo green layer of bamboo green layer should be cut off and bonded with fiber layer.
  • This method has good adhesion and high relative strength, but the material waste is serious, and there are many processes and processing costs. High is not easy to industrialize.
  • Chinese Patent No. 200510038523 a process for bonding a bamboo cyan layer to a wood veneer using an isocyanate rubber is provided.
  • the isocyanate rubber is not only expensive, but also contains a large toxicity, and has high protection requirements during operation. Although it is used in a small amount, the harm to the operator is obvious. At the same time, the composite sheet cannot meet the development requirements of non-toxic and environmental protection.
  • the roller presses a plurality of grooves on the flat arc of the bamboo material, so that the arc length of the inner wall of the bamboo extends and expands, and is as much as possible as the outer wall of the bamboo.
  • the expansion of the inner wall of the bamboo is actually the deformation of the groove or the groove of the inner roller convex tooth on the inner wall of the bamboo material, that is, he is a large crack that flattens the original bamboo material.
  • the bamboo fibers have a large difference in radial and transverse fiber forces, and the radial direction is more likely to crack. Therefore, the bamboo with small cracks destroys the overall characteristics of the bamboo and is more likely to crack along these cracks during actual deployment. , resulting in cracking, while the strength of the unfolded bamboo is also greatly reduced. Summary of the invention
  • the technical problem to be solved by the present invention is to address the above-mentioned deficiencies of the prior art, and to provide a preserved bamboo A bamboo composite profile in which a green layer of bamboo yellow layer is bonded and has high bonding strength and a preparation method.
  • the bamboo composite profile of the present invention adopts a method of processing the rubber eye on the surface of the bamboo yellow or bamboo green of the bamboo material, thereby making the adhesive deep and the bamboo layer and improving the bonding strength.
  • a bamboo composite profile comprising at least two layers of profiles and an intermediate glue layer bonded to each other, wherein a bamboo-green layer or a bamboo-yellow layer is provided with a dispersed guide rubber eye on the bonding surface of the bamboo profile, the guide The rubber layer is deep and the fiber layer of the bamboo profile, and the glue layer penetrates into the guide rubber eye and the bamboo profile to form a three-dimensional embedded glue layer.
  • the number of the guiding rubber eyes is 70,000-900,000/m 2
  • the depth of the rubber guiding eye is the thickness of the bamboo profile.
  • the axial distance between the adjacent two guiding eyes is 4-6 mm, and the radial distance of adjacent guiding eyes is 2-4 mm.
  • the shape of the guiding rubber eye is a rectangular parallelepiped shape.
  • the thickness of the bamboo profile is less than 6 mm, the length of the guiding rubber eye is 2 - 2.5 mm, and the width is 1 - 1.2 mm; when the thickness of the bamboo profile is ⁇ 6 mm, the length of the guiding rubber eye It is 2.5-3mm and the width is 1.5-2mm.
  • the guide rubber eye is a glued groove, and the glue groove has a fixed cross-sectional shape formed by removing a bamboo green layer or a bamboo yellow layer to a fiber layer.
  • the gluing groove occupies 8%-30% of the total surface area of the bamboo cyan layer.
  • the cross-sectional shape of the glue groove is an open rectangle, a V shape or an arc shape.
  • the surface shape of the glue groove is a ring shape, a straight strip shape, a zigzag shape or a corrugated shape.
  • the glue is white latex, wood glue or resin.
  • the guide rubber eye is also disposed on the outer surface of the bamboo profile, and a plastic layer is composited with the outer surface of the bamboo layer through the rubber guide eye.
  • the bamboo composite profile of the invention has the following advantages:
  • the invention realizes the bonding of the bamboo profile and the bamboo profile on the basis of retaining the bamboo profile bamboo layer and the bamboo yellow layer, and improves the utilization rate of the bamboo resource compared with the bamboo profile which removes the bamboo green bamboo yellow layer. 50%, greatly saving raw materials, avoiding the waste of bamboo, and setting the rubber film of the deep and fiber layer on the bonding surface of the bamboo profile. Compared with the bamboo green layer and the bamboo yellow layer, the fiber layer and the glue have good.
  • the glue layer penetrates into the rubber film and the fiber layer, and the glue and the bamboo material form a three-dimensional embedded glue layer, thereby greatly improving the bonding strength, while retaining the bamboo green layer and the bamboo yellow layer, retaining The strength of the original bamboo is the best material, so the composite profile after bonding is also high in strength.
  • the number of rubber eyes is 70000-90000/m 2
  • the depth of the rubber eye is 60-80% of the thickness of the bamboo profile. After a large number of tests, when the number of rubber eyes is more than 90,000/m 2 , The density of the rubber eye is too large, the bamboo profile is easy to crack, and its strength is reduced.
  • the glue is affected, so the rubber eye is 70,000-9000.
  • the strength of the gluing is improved, and the bamboo profile does not split and does not reduce its strength.
  • the shape of the rubber eye is a rectangular parallelepiped shape.
  • the rectangular shape has good eye-punching properties, which will not cause cracks on the surface of bamboo bamboo or bamboo yellow, thus preventing the generation of cracks while ensuring the bonding strength, and reducing the bamboo.
  • the shape of the guide rubber is a glue groove
  • the glue groove has a fixed cross-sectional shape formed by removing the bamboo cyan layer to the bamboo material layer
  • the glue groove is formed by mechanical cutting
  • the original groove is The material has been completely removed, and it is impossible to return to the original unprocessed gluing groove state, and the gluing groove has a certain width, and the adhesive can stay in the gluing groove, so that the gluing groove is formed on the bamboo green surface. A valid glued area.
  • the gluing groove does not undergo significant deformation under high temperature and high pressure, so that the colloid is not extruded, and a top and bottom three-dimensional glue layer formed by the intertwined adhesive grooves is formed on the surface of the bamboo cyan, which greatly improves
  • the bonding strength increases the strength of the finished board.
  • the overall bending strength after bonding is as high as 45 ⁇ 89MPa, and even higher.
  • the setting of the gluing groove makes the bamboo green surface not be squeezed during the gluing process. The deformation occurs, and therefore, the surface is flat.
  • the glue layer is a non-woven fabric and a glue composite layer or a paper and glue composite layer, which improves the overall strength of the composite profile while improving the bonding strength.
  • the invention relates to a method for preparing a bamboo composite profile by using a bamboo bamboo spring-shaped arc-shaped bamboo material, which comprises the following steps:
  • the first step is to select the bamboo material of the bamboo-green bamboo spring, and open the gap in the axial direction of the bamboo material, and heat and soften it;
  • the second step is to unfold the softened bamboo material: including the expansion process of the bamboo material by the radial force, The bamboo material is spread along the circular arc segment while applying a dispersed lead cracking eye along the surface of the circular arc segment;
  • the third step is to apply a deep rubber film to the surface of the flattened bamboo material
  • the fourth step bonding: applying glue on the bonding surface to form a glue layer;
  • the assembled embryo is placed in another bonded profile and then formed.
  • the number of the lead splitting eyes is 30,000 - 60000 / square meter.
  • the axial distance of the adjacent two lead splitting eyes is 4-6 mm, and the radial distance of the adjacent two lead splitting eyes is 2-4 mm.
  • the shape of the lead splitting eye is tapered.
  • the cone tip has a depth greater than 80% of the thickness of the bamboo.
  • the second step of the flattening includes the first flattening, the extension of the bamboo in the reverse direction, and the three steps of flattening again.
  • the processing method of the bamboo composite profile of the invention has the following advantages:
  • the present invention adopts a manner of simultaneously applying the scattered pilot eyes on the inner wall, and the lead splitting eyes are unfolded on the inner wall of the bamboo material.
  • the radial force is subjected to differentiation and absorption, and the discontinuous arrangement of the splitting eye causes discontinuous short cracks generated during flattening. These short cracks just make up for the deformation space required for the expansion of the bamboo, thereby flattening the surface of the bamboo. It does not crack and guarantees the strength and toughness of bamboo.
  • the invention is to flatten the bamboo material under the premise of retaining the strength and resources, and the strength is a method for processing the long triangular groove on the surface of the bamboo material, which is greatly improved.
  • the shape of the splitting eye is conical, and the cross section of the cone is "V" type, which is exactly the shape of the crack when the bamboo is normally unfolded, which makes up for the deformation space required for the expansion, because of the cracking eye. It is not continuously set, so no crack is formed in the transparent crack band.
  • the invention can retain bamboo resources to the maximum extent without destroying the bamboo fiber structure, without removing bamboo green and bamboo springs, and retaining bamboo resources 30-50% compared with removing bamboo green and bamboo springs, retaining The high strength of the original bamboo.
  • the invention is to develop a small and thin bamboo resource with a small diameter and a thin wall under the premise of ensuring the quality of the bamboo flat sheet.
  • the small bamboo with a bamboo diameter of 30 mm and a wall thickness of 2.5-3 mm can be flattened. Small and thin small bamboo resources have been developed and utilized.
  • the horizontal rebounding force of the flat bamboo piece is small, and a curved bamboo piece is artificially developed.
  • the inside of the bamboo piece will generate a large stress in the lateral direction, and the smaller the radius of the arc, the greater the stress.
  • the nail tip reaches 80% of the bamboo and even punctures the bamboo piece.
  • the lateral stress at this point is basically released, and the process of spreading is carried out to completely release the stress of the bamboo piece. Therefore, the original bamboo strength of the flattened bamboo piece after flattening remains while the lateral rebound force is small.
  • FIG. 1 is a schematic view showing the structure of a bamboo composite composite of the present invention.
  • 2 is a flow chart of the gluing process of the bamboo composite profile of the present invention.
  • FIG. 3 is a schematic view showing the structure of a bamboo angle steel composite of the present invention.
  • Fig. 4 is a schematic view showing the surface coating structure of the bamboo composite profile of the present invention.
  • Figure 5 is a schematic view of the orthogonal bonding of bamboo and bamboo plates.
  • Fig. 6 is a schematic view showing the structure of the first embodiment of the bamboo composite profile bamboo board of the present invention.
  • Fig. 7 is a schematic view showing the structure of a second embodiment of a bamboo composite profile bamboo board of the present invention.
  • Figure 8 is a schematic view showing the structure of the third embodiment of the bamboo composite profile bamboo board of the present invention.
  • Fig. 9 is a schematic view showing the structure of a fourth embodiment of a bamboo composite profile bamboo board of the present invention.
  • Fig. 10 is a schematic view showing the structure of a fifth embodiment of a bamboo composite profile bamboo board of the present invention.
  • Fig. 11 is a flow chart for explaining bamboo flattening in the bamboo composite profile processing method of the present invention.
  • Fig. 12 is a schematic view showing the structure of a bamboo flattening device in the method for processing a bamboo composite profile according to the present invention.
  • Fig. 13 is a schematic view showing the structure of a bamboo material after flattening using the bamboo composite profile processing method of the present invention.
  • Example 1 Taking a flat plate as an example, as shown in Fig. 1, the lower layer is a bamboo plate 1, the middle layer is a glue layer 2, and the upper layer is a wood plate 3, which is disposed on a surface on which the bamboo plate 1 and the wood plate 3 are bonded. There is a guide rubber 11 which penetrates into the interior of the bamboo plate.
  • the number of the rubber eye 11 is 70,000-900,000/m 2 , and the shape of the rubber eye 11 can be a rectangular parallelepiped shape, or a cone or other shape.
  • the length of the rectangular parallelepiped is 2 - 2.5mm and the width is 1 - 1.2mm; when the thickness of the bamboo profile is ⁇ 6mm, the length of the rectangular parallelepiped is 2.5-3 mm, width is 1.5-2 mm, and the depth of the rectangular shape is 60-80% of the thickness of the bamboo.
  • the glue layer 2 penetrates into the rubber guide 11 to form a three-dimensional embedded glue layer between the wood board 3 and the bamboo board 1.
  • the glue layer 2 can be a simple glue, but in order to further increase the strength and flexibility of the bond, the glue
  • the mixture layer may also be a non-woven fabric and a glue composite layer, a paper and glue composite layer or a glue layer, and the glue is selected from white latex, wood glue powder or resin.
  • Example 2 Taking the angle steel of three-layer structure as an example, firstly, two bamboo corner steels and one middle wood board are selected; secondly, the rubber guide eyes are processed on the bamboo angle steel surface to be bonded, and the number of the rubber guiding eyes is
  • the shape of the 80,000/m% rubber eye is a rectangular parallelepiped shape.
  • the length of the rectangular parallelepiped is 2.5 mm and the width is 1.2 mm.
  • the rubber eye is deep into the bamboo green layer or the bamboo yellow layer, and its depth is 70% of the bamboo depth.
  • the formed structure is as shown in Fig. 3, and includes a first bamboo layer 4, an intermediate wood layer 5, a glue layer 6, and a second bamboo layer 7, and a rubber film is processed on the bamboo surface glued to the wood board.
  • Embodiment 3 On the surface of the composite profile bamboo, a layer of plastic can also be sprayed. As shown in Fig. 4, 10 is a bamboo layer, and 9 is a rubber film which is processed on the outer surface of the bamboo layer 10, and 8 is a plastic layer.
  • Embodiment 4 The manufacturing method of the whole bamboo plywood and the tray panel for the 2400X1200X12MM building form is shown in Fig. 5, wherein 601 is a bamboo layer, 602 bamboo yellow layer, 603 bamboo green layer, 604 glue layer.
  • the flat film is automatically glued, leveled, brushed and glued by the glued eye.
  • the number of rubber eyes is 80,000/m 2 and the depth is bamboo thickness. 75 %.
  • Embodiment 5 Taking a three-layer corrugated profile as an example, see FIG. 6, wherein 701 is a bamboo layer, 702 a bamboo yellow layer, a 703 bamboo green layer, and a 704 glue layer.
  • High pressure The blanking plate is placed in a corrugated molding die and pressure-molded at a pressure of 2.5-3 MPa for 2-3 hours.
  • the bamboo veneer of the following structure may also be used, as shown in Fig. 7, including a bamboo cyan layer 101, a bamboo layer 102, and a bamboo spring layer 103, in the bamboo cyan layer 101 described above.
  • a glue groove 104 is formed on the bamboo layer, and the glue groove 104 has a fixed cross-sectional shape formed by removing the material of the bamboo green layer 101 to the bamboo layer 102, and the cross-sectional shape thereof is an open rectangle, and the glued groove is The surface shape is a ring shape, and the surface area occupied by the glue groove 104 is 8% of the total surface area of the bamboo green layer, and the overall bending strength after bonding is 45 MPa.
  • a bamboo composite profile bamboo veneer includes a bamboo cyan layer 101, a bamboo layer 102, and a bamboo spring layer 103.
  • the bamboo cyan layer 101 is provided with a glue groove 104 deep in the bamboo layer.
  • the gluing groove 104 has a fixed cross-sectional shape formed by removing the material of the bamboo cyan layer 101 to the bamboo layer 102, and the cross-sectional shape thereof is an open rectangle, and the surface shape of the gluing groove 104 is a straight strip type.
  • the surface area occupied by the gluing groove 104 is 30% of the total surface area of the bamboo cyan layer, and the overall bending strength after gluing is 89 Mpa.
  • a bamboo composite profile bamboo veneer includes a bamboo cyan layer 101, a bamboo layer 102, and a bamboo spring layer 103.
  • the bamboo cyan layer 101 is provided with a glue groove deep into the bamboo layer 102.
  • the glue groove 104 has a fixed cross-sectional shape formed by removing a bamboo cyan layer to a bamboo material layer, the cross-sectional shape of which is an open rectangle, and the surface shape of the glue groove is a zigzag type, and the glue groove is The surface area occupied is 15% of the total surface area of the bamboo green layer, and the overall bending strength after bonding is 70 MPa.
  • a bamboo composite profile bamboo veneer includes a bamboo cyan layer 101, a bamboo layer 102, and a bamboo spring layer 103.
  • the bamboo cyan layer 101 is provided with a glue groove deep into the bamboo layer 102.
  • the glue groove 104 has a fixed cross-sectional shape formed by removing a bamboo cyan layer to a bamboo material layer, the cross-sectional shape of which is an open rectangle, and the surface shape of the glue groove is a straight strip type, and the glue groove
  • the surface area occupied by the groove is 20% of the total surface area of the bamboo green layer, and the overall bending strength after bonding is 82 MPa.
  • the invention relates to a method for preparing a bamboo composite profile by using a bamboo bamboo spring-shaped arc-shaped bamboo material, which comprises the following steps:
  • the first step is to select the bamboo material of the bamboo-green bamboo spring, and open the gap in the axial direction of the bamboo material, and heat and soften it;
  • the second step is to unfold the softened bamboo material: including the expansion process of the bamboo material by the radial force, The bamboo material is spread along the circular arc segment while applying a dispersed lead cracking eye along the surface of the circular arc segment;
  • the third step is to apply a deep rubber film to the surface of the flattened bamboo material; the fourth step, bonding: applying glue on the bonding surface to form a glue layer;
  • the assembled embryo is placed in another bonded profile and then formed.
  • the number of the lead splitting eyes is 30,000 - 60000 / square meter.
  • the axial distance of the adjacent two lead splitting eyes is 4-6 mm, and the radial distance of the adjacent two lead splitting eyes is 2-4 mm.
  • the shape of the lead splitting eye is tapered.
  • the cone tip has a depth greater than 80% of the thickness of the bamboo.
  • the second step of the flattening includes the first flattening, the extension of the bamboo in the reverse direction, and the three steps of flattening again.
  • the bonding of the bamboo composite profile processing method has been explained.
  • FIG. 11, FIG. 12 and FIG. 13, the flattening of the processing method of the bamboo composite profile of the present invention will be described in detail. More than a year old bamboo trails of 30-60 MM are used as raw materials for bamboos such as early bamboo and Leizhu, and industrial waste bamboo. Fresh bamboo is placed for 3-12 months. The width of the press machine is cut into 2500MM bamboo segments, and the bamboo segments are machined into gaps, then the microwaves are softened, and then flattened. The curved original bamboos 207 are transferred to the upper roll 208 through the assembly line, and the upper roll 208 is springs 202 and slipped. The block 205 and the Oldham coupling 209 cooperate to insert the raised steel nail 206 on the upper roller into the curved original bamboo 207, and the power is transmitted to the Oldham coupling through the sprocket 210.
  • the 209 and the upper roll 208 drive the roll 208 to roll.
  • the rolling middle curved bamboo 207 is pressed by the steel nail 206 with a large number of artificially induced splitting eyes, and the steel nail 206 has a tapered shape, and may also be a rectangular parallelepiped shape or a small length "V" shaped convex extending in the circumferential direction of the roller 208. Therefore, the shape of the splitting eye may be a tapered hole, a rectangular parallelepiped groove or other short groove or a "V" shaped short groove according to the shape of the steel nail, and the tapered hole may be a polygonal pyramid hole, such as a quadrangular pyramid, a hexagonal pyramid, or the like. .
  • the lower roll 204 is shaped, and the steel nail 206 on the upper roll 208 is applied.
  • the curved raw bamboo 312 softened by microwave or other heat carrier is transferred to the upper roll 310 through the assembly line, and the upper roll 310 inserts the steel nail into the curved original bamboo 312 while rolling, and the curved original bamboo 312 is pressed with a large amount of artificial work.
  • the splitting eye is induced, it is taken up by the rolling 310 to the next pair of rolling rolls, and the lower roll 311 determines the shape of the curved original bamboo, and the upper roll 310 and the lower roll 311 can induce the arc of the curved original bamboo 312 in the induced splitting.
  • the application is further enlarged, and gradually extended to the artificial ideal shape.
  • the original bamboo segments are flattened step by step in the multiple pairs of pressure rollers, as shown in Fig. 10.
  • the specific process is as follows: Arc-shaped original bamboo initial expansion process 301, arc type
  • the original bamboo is basically controlled but the internal force is large, the serious unevenness, and the effective artificial induced cracking are not many, the number is 10,000-15000 per square meter.
  • the arc type original bamboo essence is unfolded in process 302, and the arc type original bamboo is all controlled but the internal force is uneven, effective person There are not many crack holes in the work, and the number is 20,000-30000/m2.
  • Arc-type original bamboo flattening process 303 all of the curved original bamboos are controlled but the internal force is small, the basic leveling and effective artificial induced cracking increase, the number is 30,000-40000 / square meter.
  • the arc-shaped original bamboo exhibition process 304 the arc-type original bamboo is all controlled but the internal force is not, flat, effective artificial induced cracking, the number is 40000-50000 / square meter.
  • Arc-type original bamboo flattening process 305 all of the original bamboos are controlled, the internal force is not, flat, effective artificial induced cracking, the number is 50000-60000 / square meter.
  • the axial distance between two adjacent splitting eyes is 4-6 mm, and the radial distance between adjacent two leading split eyes is 2-4 mm.
  • the depth of the cone tip is greater than 80% of the thickness of the bamboo.
  • the bamboo structure after flattening is shown in Fig. 12, among which 401 bamboo green layer, 402 fiber layer, 403 bamboo yellow layer, 404 artificial induced splitting eye, and 405 induced small crack.
  • the entire flattening process includes the first flattening process. After the first flattening, the bamboo is reversely bent to make it stretch. Finally, the three steps are flattened again, taking "split cracking, widening with the arc, gradually expanding with the arc, overcorrecting "The processing idea.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

L'invention concerne un matériau composé en segments de bambou et son procédé de fabrication. Le matériau composé comprend au moins deux couches de matériau à segments collées l'une à l'autre, une couche adhésive (2) étant intercalée entre elles. Des trous de guidage d'un adhésif dispersif (9,11,104) sont formées sur une couche verte du bambou ou sur une couche jaune du bambou constituant la surface de liaison du bambou. La profondeur des trous de guidage de l'adhésif atteint la couche fibreuse (402) du bambou et la couche adhésive (2) libère un infiltrat dans les trous pour former une couche adhésive encastrée solide. Le procédé de fabrication consiste à: choisir un bambou arciforme présentant une couche verte de bambou et une couche jaune de bambou; former une fente dans le sens de l'axe du bambou; chauffer le bambou pour le ramollir; aplatir ensuite le bambou arciforme ramolli pour obtenir une feuille; former, en même temps que l'opération d'aplatissement, des trous de guidage de substance de craquage dispersive (105,404) le long de la surface jaune du bambou arciforme; former des trous de guidage de l'adhésif (9,11,104) à la surface du bambou aplati, la profondeur des trous atteignant la couche fibreuse du bambou; appliquer de la colle sur la surface de liaison pour former la couche adhésive (2); et assembler un autre matériau à segments collés, puis former le matériau composé en segments de bambou. Le matériau composé en segments de bambou présente les avantages d'un matériau de bambou à coefficient de travail, de résistance et d'adhérence élevé.
PCT/CN2008/071795 2007-07-31 2008-07-29 Matériau composé en segments de bambou et son procédé de fabrication WO2009015599A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CNA2007100254597A CN101100075A (zh) 2007-07-31 2007-07-31 一种竹制复合型材及制作方法
CN200710025460.X 2007-07-31
CN200710025460XA CN101100082B (zh) 2007-07-31 2007-07-31 一种对留竹青竹黄圆弧状的竹材的展平方法
CN200710025459.7 2007-07-31
CN200810123684.9 2008-05-23
CNA2008101236849A CN101288961A (zh) 2008-05-23 2008-05-23 竹制复合型材竹单板

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WO2009015599A1 true WO2009015599A1 (fr) 2009-02-05

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102794805A (zh) * 2012-07-24 2012-11-28 浙江大庄实业集团有限公司 竹展平方法
CN104070585A (zh) * 2014-06-11 2014-10-01 陈晓岗 一种竹材的加工方法
CN110576480A (zh) * 2019-09-16 2019-12-17 国际竹藤中心 一种定弧竹型材的制备方法及其设备
CN113693354A (zh) * 2021-09-08 2021-11-26 陈爱兴 外附竹黄片的扇子大边骨
CN113829452A (zh) * 2020-12-17 2021-12-24 龙竹科技集团股份有限公司 一种竹吸管加工方法

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CN102794805A (zh) * 2012-07-24 2012-11-28 浙江大庄实业集团有限公司 竹展平方法
CN102794805B (zh) * 2012-07-24 2014-07-16 浙江大庄实业集团有限公司 竹展平方法
CN104070585A (zh) * 2014-06-11 2014-10-01 陈晓岗 一种竹材的加工方法
CN110576480A (zh) * 2019-09-16 2019-12-17 国际竹藤中心 一种定弧竹型材的制备方法及其设备
CN110576480B (zh) * 2019-09-16 2024-03-22 国际竹藤中心 一种定弧竹型材的制备方法及其设备
CN113829452A (zh) * 2020-12-17 2021-12-24 龙竹科技集团股份有限公司 一种竹吸管加工方法
CN113693354A (zh) * 2021-09-08 2021-11-26 陈爱兴 外附竹黄片的扇子大边骨
CN113693354B (zh) * 2021-09-08 2023-09-29 陈爱兴 外附竹黄片的扇子大边骨

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