CN201728711U - Agglutinated bamboo board - Google Patents
Agglutinated bamboo board Download PDFInfo
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- CN201728711U CN201728711U CN2010202700388U CN201020270038U CN201728711U CN 201728711 U CN201728711 U CN 201728711U CN 2010202700388 U CN2010202700388 U CN 2010202700388U CN 201020270038 U CN201020270038 U CN 201020270038U CN 201728711 U CN201728711 U CN 201728711U
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- plywood
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- glued board
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Abstract
The utility model relates to an agglutinated bamboo board and belongs to the technical field of bamboo development and bamboo board processing. A top surface of the agglutinated bamboo board is a bamboo plywood; and the bamboo filament arrangement direction of bamboo plywood is vertical to the plywood itself. The agglutinated bamboo board has the advantages of high static bending strength, high impact resistance, small water absorption expansion, and excellent size stability.
Description
Technical field
The utility model relates to bamboo plywood, belongs to bamboo development and bamboo clappers processing technique field.
Background technology
The bamboo clappers of Cun Zaiing is based on simple bamboo chip glued board in the market, and this kind bamboo clappers can be used as the material that furniture is made after can being directly used in indoor and outdoor floor, lagging.The product that also has is with this bamboo chip glued board and veneering.As the patent No. is that 200620104966.0 Chinese utility model patent discloses a kind of bamboo chip veneer composite board, it comprises upper layer, intermediate layer, the following bottom of one deck at least, each contiguous concatenation sewer has binding agent, the splicing seams of each adjacent layer is separated by 90 °, described upper layer and following bottom are the rectangular flat assembly combination of bamboo chip slabbing or flat stacked put combination or intersection establishment combination, and described intermediate layer is that cylindrical strip plant is formed set; The cylindrical strip plant in described intermediate layer is that the tiling combination is integrated.Because the levels of this utility model is by being that bamboo wood is made, so the good fineness of case hardness is good; But the bulk strength of this utility model is not high, is not suitable for doing top-grade furniture.And for example the patent No. is that 200920105908.3 Chinese utility model patent discloses the bamboo-wood composite board that the super thick rotary cut venner of a kind of usefulness is made, and it comprises central layer, panel and backboard, and described central layer is the super thick rotary-cut plate of 4.5mm～12mm; Described panel and backboard are to be made by bamboo wood, and described central layer comprises that adjacent layer is the described super thick veneer of several layers that rift grain combines, and between adjacent described veneer glue-line is set, and the binding agent of described glue-line is the aquosity polymer isocyanic ester adhesive; The super thick veneer of described sandwich layer is the veneer after overstress enzyme degradation treatment, promptly is formed with the crackle of point-like or wire in the rift grain direction of the loose side of every layer of described veneer.This utility model and the above-mentioned patent No. are that 200620104966.0 Chinese utility model is similar on overall structure, have similar pluses and minuses, and various mechanical properties performances still can.
The common drawback of this class sheet material is that bulk strength is not high, and dimensional stability is relatively poor.
The utility model content
The purpose of this utility model is for solving the problems of the technologies described above, a kind of bamboo plywood is provided, and it has the bulk strength height, the advantage that dimensional stability is good.
Above-mentioned technical purpose of the present utility model is achieved by the following technical programs:
Bamboo plywood, its superficial layer are bamboo piece glued board, and the bamboo silk orientation of described bamboo piece glued board is with vertical from the body face.
In the utility model technique scheme, described bamboo piece glued board is not to be meant to splice hot repressing after the small bamboo block applying glue or to cold pressing and make, but be foursquare bamboo bar with making the cross section after the applying glue of a plurality of bamboo chips elder generation, to be pressed into bamboo clappers after the applying glue of a plurality of bamboo bar then, to be pressed into cubical big bamboo piece after a plurality of bamboo clappers applying glues again, at last described cubical big bamboo piece cut into required sheet material on the plane perpendicular to described splicing pressing direction.Be as good as with the sheet material that is pressed into the small bamboo block splicing on the surface, but both have the difference of essence on mechanical property.The density of bamboo plywood of the present utility model is greater than 1.0 g/cm
3, moisture content be 6.0～14.0%, 24 hours thickness swelling rates less than 2.5%, MOR is greater than 100 MPa, case hardness is greater than 80 MPa.These mechanical properties are to be beyond one's reach with the sheet material that the small bamboo block splicing is pressed into; Two involved patented products of background technology also have bigger gap in the mechanical property performance.The another kind of performance of the utility model bamboo plywood is embodied in its dimensional stability height, this is because its structures shape, its structure still is to be made up of many little bamboo chips in essence, and this just makes that internal stress can in time and be to be eliminated to greatest extent in stressed.Such as the solid wooden floor board of monoblock, owing to be a monoblock, so fitting up a period of time after the situation of floor bending appears in regular meeting, solid wooden floor board is water funk, especially will restore almost after the imbibition and can not realize.And the utility model bamboo plywood is developed on the basis of the technology aspect the internal stress in this theory, utility model designer consider whole plate internal stress eliminate this show on the one hand poor, therefore do not adopt the bamboo chip direct splicing, but with bamboo chip through repeatedly being spliced into cube, then cut again and form, this just makes the utility model bamboo plywood eliminate this in stressed back internal stress to show outstanding especially on the one hand; And its intensity is also much more powerful than the sheet material that directly is spliced into small bamboo block.In addition, because the bamboo silk of the utility model bamboo plywood is with vertical from the body face, so its anti-pressure ability is strong especially, its principle just like to the horizontal application of force of pillar with consistent to its vertical application of force, make and damage it, then must apply much bigger power to it in the vertical.
Preferred as technique scheme, described bamboo plywood is a lamina.
As the advantage of technique scheme, described bamboo plywood is a multi-layer sheet, and described superficial layer comprises upper layer and following surface layer, is provided with the intermediate layer between upper layer and the following surface layer, and described intermediate layer is an at least one bamboo chip concora crush glued board.
Further preferred as technique scheme, described intermediate layer is two-layer or two-layer above bamboo chip concora crush glued board, the bamboo silk direction of the bamboo chip concora crush glued board of adjacent two layers is vertical.
The enforcement of technique scheme makes a kind of bamboo plywood of the utility model have higher bulk strength.The intermediate layer is a bamboo chip concora crush glued board, and the lines of adjacent two layers bamboo chip glued board is vertical, so the power that acts on the utility model bamboo plywood can be disperseed effectively, external manifestation is higher for whole plate intensity.The intermediate layer is the bamboo strip side compression glued board, and its shock-resistant and anti-pressure ability of the side of bamboo chip is stronger than the bamboo chip flat clamp of equal thickness.
Preferred as technique scheme, the thickness of described bamboo plywood is 3～20cm.
Preferred as technique scheme, the thickness of described upper layer and following surface layer is 3～20mm; The thickness in monolayer of the bamboo chip concora crush glued board in intermediate layer is 2～9mm.
Preferred as technique scheme, the thickness of described upper layer and following surface layer is 6mm; Described intermediate layer is 3 layers of bamboo chip concora crush glued board, and thickness in monolayer is followed successively by 2mm, 3mm, 2mm in proper order by gummed.
In sum, the utlity model has following beneficial effect:
It is big, excellent in cushion effect that the utility model bamboo plywood has a MOR, the advantage of expansion rate of water absorption small size good stability.
Description of drawings
Fig. 1 is the structure cutaway view of the utility model embodiment one;
Fig. 2 is the structural representation of the utility model embodiment two.
Among the figure, the 1st, little bamboo chip, the 2nd, upper layer, the 3rd, intermediate layer, the 4th, following surface layer.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification, but as long as all are subjected to the protection of Patent Law in claim scope of the present utility model.
Embodiment one
As shown in Figure 1, a kind of bamboo plywood, it is a single layer structure, and thickness is 7cm, and length and width can be made as required.Its thickness also can be done suitable adjustment according to length and width and purposes.These lamina upper and lower surfaces have the vestige of little bamboo chip 1 splicing, and the cross section that four little bamboo chips are spliced into is square, and adjacent described two foursquare bamboo chip stitching directions are vertical mutually.This not only makes and looks comparatively attractive in appearance, and has certain supporting role mutually, eliminate this in internal stress very big contribution is also arranged on the one hand, such as, when being subjected to static(al), because little bamboo chip 1 is vertical mutually on stitching direction, after so integral body is stressed, power can be dispersed in orthogonal direction, add the distortion slightly of little bamboo chip 1, make and capablely on all directions, disperse, eliminate having great importance for internal stress, guaranteed that the dimensional stability of bamboo plywood of the present utility model is good.The density of this bamboo plywood is 1.2 g/cm
3, moisture content is that 8.0%, 24 hour thickness swelling rate is 2.0%, and MOR is 120 MPa, and case hardness is 90 MPa.
Above-mentioned a kind of bamboo plywood is following manufacturing:
1. mao bamboon is blocked and make sheet, go green grass or young crops to remove Huang again, make smooth bamboo chip, then described bamboo chip gluing rear side is built up slab, being hot pressed into the cross section then is foursquare bamboo band; Resin added is 100～300g/m
2Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min;
2. with described bamboo band gluing, the vertical mode of side pressure direction with the bamboo chip of adjacent bamboo band is made into slab with described bamboo band then, is hot pressed into plate then; Resin added is 100～300g/m
2Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min;
3. the plate gluing that 2. step is made is joined described plate is folded in the vertical mode of the side pressure direction of the bamboo chip of adjacent panels then, is hot pressed into sheet material then; Resin added is 100～300g/m
2Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min;
Embodiment two
As shown in Figure 2, bamboo plywood comprises upper layer 2, intermediate layer 3, following surface layer 4; Described upper layer 2 and following surface layer 4 are embodiment one described bamboo plywood, and the intermediate layer is three layers a bamboo chip concora crush glued board.The density of described a kind of bamboo plywood is 1.4 g/cm
3, moisture content is that 8.0%, 24 hour thickness swelling rate is 2.0%, and MOR is 120 MPa, and case hardness is 90 MPa.
Described bamboo chip concora crush glued board is meant, with mao bamboon block go green grass or young crops to remove Huang after the film-making after, make the bamboo chip of set specification again, be arranged in parallel after this bamboo chip gluing then, cold pressing or hot-forming with press.
The thickness of described upper layer and following surface layer is 6mm; Described intermediate layer is 3 layers of bamboo chip concora crush glued board, and thickness in monolayer is followed successively by 2mm, 3mm, 2mm in proper order by gummed.
Above-mentioned a kind of bamboo plywood is following manufacturing:
1. mao bamboon is blocked and make sheet, go green grass or young crops to remove Huang again, make smooth bamboo chip, then described bamboo chip gluing rear side is built up slab, being hot pressed into the cross section then is foursquare bamboo band; Resin added is 100～300g/m
2Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min;
2. with described bamboo band gluing, the vertical mode of side pressure direction with the bamboo chip of adjacent bamboo band is made into slab with described bamboo band then, is hot pressed into plate then; Resin added is 100～300g/m
2Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min;
3. the plate gluing that 2. step is made is joined described plate is folded in the vertical mode of the side pressure direction of the bamboo chip of adjacent panels then, is hot pressed into sheet material then; Resin added is 100～300g/m
2Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min;
4. the sheet material that 3. step is made is on the plane perpendicular to the bamboo silk direction of described sheet material, with described upper layer and the following surface layer that cuts into set specification; Stand-by;
5. mao bamboon is blocked and make sheet, go green grass or young crops to remove Huang again, make the smooth bamboo chip of set specification, will be arranged in parallel into slab after the described bamboo chip gluing then, be hot pressed into the bamboo chip concora crush glued board of set specification then; Resin added is 100～300g/m2; Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min; Stand-by;
6. the upper layer that 4. step is made and following surface layer, many bamboo chip concora crush glued boards that 5. step makes are the intermediate layer, distinguish gluing after, be made into slab according to the order stack of upper layer, intermediate layer and following surface layer, be hot pressed into the bamboo plywood of set specification then; The bamboo fibre orientation of adjacent two the bamboo chip concora crush glued boards in described intermediate layer is vertical mutually; Resin added is 100～300g/m2; Hot pressing condition is 50～100 ℃ of temperature, pressure 0.6～3MPa, and hot pressing time is controlled at 3～30min.
Embodiment three Performance Detection
Sample dimensions is pressed table 1 regulation and is carried out.
Undertaken by 4.1 regulation among the GB/T 17657-1999.
The moisture content test
The check of moisture content pattern is undertaken by 4.3 regulations among the GB/T 17657-1999.
Electromagnetism numeral hygronom is adopted in the moisture content exfactory inspection.During check tested reorganization floor level is placed, more than the built on stilts 50mm in the back side.Determine 4 equally distributed test points in the stage casing, floor of distance two ends 150mm; Electromagnetism numeral hygronom is placed on respectively on each test point, and record electromagnetism numeral hygronom data presented is got the moisture content of arithmetic mean of instantaneous value as Board Under Test.
The density check
Undertaken by 4.2 regulations among the GB/T 17657-1999.
The check of 24h thickness swelling rate
Undertaken by 4.5 regulations among the GB/T 17657-1999.
The MOR test
The MOR test is undertaken by 4.9 among the GB/T17657-1999.
When specimen thickness h≤15mm, the bearing distance L is 240mm, and when specimen thickness h＞15mm, the bearing distance L is 300mm.
The case hardness test
Undertaken by GB/T 1991 regulations.
Surface impact can be tested
Undertaken by 4.44 regulation among the GB/T 17657-1999.Each test specimen only impacts once.During test, test specimen lining thickness down is (2.5 ± 0.2) mm, and surface density is the foamed polyethylene of 75g/m2.
The result calculates and expression
Test specimen dipping deformation rate is calculated by (1), is accurate to 0.1%.
T=(h2-h1)／h1*100% …………………………（1）
In the formula: T---dipping deformation rate, %;
H1---specimen thickness before the immersion, mm;
H2---immersion back specimen thickness, mm.
The results are shown in Table 2
Claims (7)
1. bamboo plywood, it is characterized in that: the superficial layer of described bamboo plywood is a bamboo piece glued board, and the bamboo silk orientation of described bamboo piece glued board is with vertical from the body face.
2. bamboo plywood according to claim 1 is characterized in that: described bamboo plywood is a lamina.
3. bamboo plywood according to claim 1 is characterized in that: described bamboo plywood is a multi-layer sheet, and described superficial layer comprises upper layer and following surface layer, is provided with the intermediate layer between upper layer and the following surface layer, and described intermediate layer is an at least one bamboo chip concora crush glued board.
4. bamboo plywood according to claim 3 is characterized in that: described intermediate layer is the bamboo chip concora crush glued board more than two or two, and the bamboo silk direction of adjacent two bamboo chip concora crush glued board is vertical.
5. bamboo plywood according to claim 2 is characterized in that: the thickness of described bamboo plywood is 3～20cm.
6. bamboo plywood according to claim 4 is characterized in that: the thickness of described upper layer and following surface layer is 3～20mm; The thickness in monolayer of the bamboo chip concora crush glued board in intermediate layer is 2～9mm.
7. bamboo plywood according to claim 6 is characterized in that: the thickness of described upper layer and following surface layer is 6mm; Described intermediate layer is 3 bamboo chip concora crush glued boards, and thickness in monolayer is followed successively by 2mm, 3mm, 2mm in proper order by gummed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202700388U CN201728711U (en) | 2010-07-26 | 2010-07-26 | Agglutinated bamboo board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202700388U CN201728711U (en) | 2010-07-26 | 2010-07-26 | Agglutinated bamboo board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201728711U true CN201728711U (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202700388U Expired - Fee Related CN201728711U (en) | 2010-07-26 | 2010-07-26 | Agglutinated bamboo board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201728711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885193A (en) * | 2010-07-26 | 2010-11-17 | 浙江欣远竹制品有限公司 | Bamboo plywood and preparation method thereof |
-
2010
- 2010-07-26 CN CN2010202700388U patent/CN201728711U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885193A (en) * | 2010-07-26 | 2010-11-17 | 浙江欣远竹制品有限公司 | Bamboo plywood and preparation method thereof |
| CN101885193B (en) * | 2010-07-26 | 2013-01-02 | 浙江欣远竹制品有限公司 | Bamboo plywood and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20130726 |