CN101528431A - Flattened bamboo panel - Google Patents
Flattened bamboo panel Download PDFInfo
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- CN101528431A CN101528431A CNA2007800365329A CN200780036532A CN101528431A CN 101528431 A CN101528431 A CN 101528431A CN A2007800365329 A CNA2007800365329 A CN A2007800365329A CN 200780036532 A CN200780036532 A CN 200780036532A CN 101528431 A CN101528431 A CN 101528431A
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- bamboo
- bar wall
- flattening
- board
- bamboo board
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Abstract
The present invention provides a flattened bamboo panel having one single, solid layer of pressed bamboo culm wall with most of the exterior and interior zones. The processed bamboo panel provides at least one of its longitudinal surfaces seamless and both longitudinal cross sections parallel to each other and perpendicular to the longitudinal surfaces. The present invention also provides a process of constructing such flattened bamboo panel.
Description
Technical field
The present invention relates to a kind of bamboo board of flattening.
Background technology
The present invention relates to a kind of flattened bamboo panel, described bamboo board has the compacting bamboo bar wall of a single solid layer, and described bamboo bar wall has outside area and inner area.Because made by single thick bamboo tube, processed thus bamboo board is no glue.The method of constructing such bamboo board equally, is also disclosed.
Known in the prior art multiple bamboo product, usually, bamboo board is to be made by the thick bamboo tube of tubulose, described thick bamboo tube comprises joint and bar wall.In outer reaching, bamboo bar wall further comprises outside area, mesozone and inner area.In order to form a bamboo board, be extended and flatten with before forming described sheet material at it, remove the outside area of described bar wall and sizable part of inner area usually.
The problem that may cause in such technology comprises lower utilization rate of raw materials, too much uses on the surface of bonding agent, processed sheet material significantly crackle and high manufacturing cost.
For overcoming the above problems, carried out multiple trial.The most general thick bamboo tube in the bamboo clappers industry is cut method open and is had low stock utilization, and being extensive use of of adhesive also caused high manufacturing cost.Bamboo trunk compacting and enlargement method (bamboo-tube-compressing-and-expanding) have been improved utilization rate; But, owing to must remove the outside area of bamboo bar wall and the major part of inner area, so utilization rate of raw materials is still lower.The thickness of Gou Zao bamboo board is often less than 8mm like this.
Therefore, need a kind of modification method by thick bamboo tube structure bamboo board.
Summary of the invention
Constructed a kind of bamboo board of flattening, comprised the bamboo bar wall of individual layer, described bamboo bar wall has outside area, mesozone and inner area.
According to another embodiment, constructed a kind of bamboo board of flattening, described bamboo board comprises the bamboo stalk wall of individual layer, the inner area of wherein said bamboo bar wall is formed with two groups of oblique trunkings along two different directions; Wire casing within every group is parallel to each other.Described two groups of wire casings are placed on the opposite side of grain direction, and every group and grain direction are formed on the roughly angle between 10 degree and 60 degree.
Disclose the method for the bamboo board of making above-mentioned flattening, comprised the steps: a) vertically to cut thick bamboo tube along the whole length of thick bamboo tube, to form a slice or multi-disc bamboo bar wall, described bamboo bar wall comprises outside area, mesozone and inner area; B) soak and heat described bamboo bar wall, form softening bar wall (softening process) thus; And c) with gradually or the rapid technology of multistep flatten described softening bar wall.
The optional method of making the bamboo board of above-mentioned flattening comprises the steps: a) vertically to cut thick bamboo tube along the whole length of thick bamboo tube, and to form a slice or multi-disc bamboo bar wall, described bamboo bar wall comprises outside area, mesozone and inner area; B) described inner area is formed with a plurality of parallel wire casings, wherein said wire casing and grain direction are formed on the number of degrees between about 10 degree and 60 degree; C) soak and heat described bamboo bar wall, form softening bar wall thus; And d) flattens described softening bar wall.
Description of drawings
Fig. 1 is the stereogram in a cross section of thick bamboo tube.
Fig. 2 has shown the cross section of bamboo bar wall and the schematic diagram of not same district wherein.
Fig. 3 has shown the schematic diagram according to the structure of the bamboo board of training centre structure of the present invention.
Fig. 4 has shown the stereogram according to the structure of the variant of the bamboo board of training centre structure of the present invention.
Fig. 5 has shown the stereogram according to the structure of another variant of the bamboo board of training centre structure of the present invention.
Fig. 6 has shown that be formed with non-penetrates, the stereogram of one section bar wall of oblique trunking on the interior vertical surface at the bar wall before the compacting.
Fig. 7 has shown that be formed with non-penetrates, the stereogram of optional one section bar wall of oblique trunking on the interior vertical surface at the bar wall before the compacting.
Fig. 8 has shown the side view of the pressure setting that is used to suppress the bar wall shown in Fig. 6 and 7.
Fig. 9 has shown the side view of the optional pressure setting that is used to suppress the bar wall shown in Fig. 6 and 7.
Figure 10 has shown the side view of the pressure setting of the bar wall that the warp of pressure setting and inside is softening.
Figure 11 has shown the side view of the optional design of the pressure setting that is used for flattening gradually described bamboo bar wall.
Figure 12 has shown the side view of another optional design of the pressure setting that is used for flattening gradually described bamboo bar wall.
The specific embodiment
The invention provides a kind of bamboo board of flattening, described bamboo board comprises the bamboo stalk wall of individual layer, and wherein said bamboo stalk wall comprises outside area, mesozone and inner area, and each in wherein said outside area and the described inner area comprises outermost portion.In one embodiment of the invention, the bamboo board of described flattening is made of a single thick bamboo tube.
Term " sheet material " refers to wood relative thin, flat etc.In this invention, term " sheet material " refers to bamboo piece relative thin, flat.
Disclosed method can not relate to the use adhesive in this invention.In one embodiment, the bamboo board of flattening does not use adhesive.In another embodiment of the present invention, the bamboo board of flattening is a high density plate material.
Referring to accompanying drawing, shown the part of thick bamboo tube among Fig. 1, shown that wherein thick bamboo tube 1 comprises ring 2 and bamboo wall 3.The zoomed-in view of the cross section of thick bamboo tube 1 is presented among Fig. 2, has shown that bar wall 3 further comprises three different districts, and wherein said three different districts have different fibre densities and types of organization.Usually, the outside area 4 of bar wall 3 has than higher fibre density of inner area 6 and the hardness of Geng Gao.Bar wall between outside area 4 and the inner area 6 is defined as " culm zone " or " mesozone " 5 in this application.Each of outside area and inner area comprises outermost portion.The described outermost portion of outside area is placed on the outer surface of bamboo bar wall.The outermost portion of inner area is placed in the inner surface place of bamboo bar wall.
One or more a plurality of step during the preliminary working of raw material thick bamboo tube can comprise the steps: a) part of cutting raw material thick bamboo tube 1; B) (from the outside of thick bamboo tube) removes ring 2; C) longitudinal length along thick bamboo tube cuts and opens described thick bamboo tube to form a slice or several bamboo bar walls 3; D) (internally) further removes ring 2; E) soak and heat processed bamboo bar wall, be softened (softening processing) up to the tissue of bamboo.
Behind preliminary treatment bar wall, further need to extend, flatten and suppress forming spendable bamboo board.Final bamboo panel product 7 has been shown among Fig. 3.Described sheet material 7 has two parallel longitudinal surface (tops) 9 and 9a (bottom), two longitudinal cross-sections 8,8a, and described longitudinal cross-section 8,8a is parallel to each other and parallel with bamboo grain direction (direction of growth).Described two longitudinal cross-sections 8,8a are perpendicular to described two vertical surfaces 9 and 9a.
Because unsuitable extension and flattening method, the bamboo panel product of being constructed by prior art often causes the surface to go up tangible crackle.In addition, because the outside area and the inner area of major part must be removed before flattening process, so (bamboo board) thickness of final products is greatly limited.
The invention provides a new method and suitably extend and flatten the bamboo board of preliminary treatment.According to one embodiment of present invention, the method for making flattened bamboo panel comprises the steps: a) vertically to cut thick bamboo tube along the whole length of thick bamboo tube, and to form a slice or multi-disc bamboo bar wall, described bamboo bar wall comprises outside area, mesozone and inner area; B) soak and heat described bamboo bar wall, form softening bar wall (softening process) thus; And c) with gradually or the rapid technology of multistep flatten described softening bar wall.In above-mentioned step c), the bamboo bar wall of preliminary treatment is rotated and uses the rotation flattening device to flatten gradually.In another embodiment, Ruan Hua bar wall flattens gradually by promoting on cylindrical rotating shaft.As shown in figure 10, described rotation flattening device comprises the shell 11 of sealing, columniform rotatable shaft 12 and be connected to axle 12 and be connected to the protrusion piece 13 of inner surface of sealing shell 11.Removable second 14 is placed on the flattening part 15 to provide perpendicular to the longitudinal cross-section 8 of bar wall 3 or one controllable pressure among the 8a.The thick bamboo tube of preliminary treatment is placed on the tubular gap that forms between axle 12 and the sealing shell 15, and its longitudinal cross-section 8 and 8a be contact block 13,14 respectively.Described then axle 12 is rotated counterclockwise.As a result, thick bamboo tube just is pushed in the flattening part 15 also flattened gradually.Along with axle 12 rotations, controllable pressure 14 is applied on the piece 14, and longitudinal cross-section 8, the 8a of bamboo bar tube are pressed during flattening process like this.Be applied to 8, the pressure on the 8a helps to close at the crackle in the inner area that is formed on bamboo bar wall during the flattening process, improves panel density and case hardness thus.
In another embodiment that makes the flattened bamboo panel method, the bar wall after softening is flattened gradually by a plurality of or one group of pressure setting, and each pressure setting has different compacting radians.As shown in figure 11, the bamboo bar wall 3 of preliminary treatment flattens gradually by a plurality of or one group of pressure setting 16a-16g, and each pressure setting has different compacting radians.In an embodiment again, the softening bar wall of described warp is earlier by pressure setting compacting in described group, that have maximum compacting radian, and at last by in described group, have a pressure setting compacting of minimum compacting radian.As shown in Figure 11, the bamboo bar wall 3 of preliminary treatment at first is placed on described device 16a (having last pressboard 17 and base portion 18) and is pressed. Operative installations 16b, 16c, 16d, 16e, 16f repeat identical technology then, and each device has the compacting radian that reduces a little.For employed last device, upper plate 17 and base portion 18 are replaced by a pair of flat fully plate 19.Two pieces 20,20a are placed in the last pressure setting further, and the longitudinal cross-section 8 of bamboo bar 3 is further pushed.
In another embodiment of the method for making flattened bamboo panel, by contacting a plurality of rollers or one group of roller, the bar wall after softening is flattened gradually, and each roller has different radians.As shown in Figure 12, the bamboo bar wall of preliminary treatment is by contacting a plurality of or one group of roller and being flattened gradually, and each roller has different radians.In yet another embodiment, through softening bar wall at first by described group, have the roll-in system of maximum compacting radian, and at last by in described group, have a roll-in system of minimum compacting radian.As shown in figure 12, the inner surface when the bar wall 3 of described preliminary treatment is ground out-of-date by the first roller 21a (the described first roller 21a has maximum radian), the beginning flattening process.Then, this technology can with second, third, the 4th and more roller repeat, each roller has the radian that reduces gradually.Because last roller is flat, so bar wall 3 is also flattened fully.Flattened bamboo board can further be repaired longitudinal cross-section 8,8a.
Alternatively, can be formed with a plurality of parallel oblique trunkings on the inner area of bamboo bar wall.Shown in Fig. 6 and 7,, before bamboo bar wall is extended and flattens, can on the inner area of bamboo bar wall, form a plurality of oblique trunkings 10,10a in order to guide and reduce the purpose of crackle.The degree of depth of wire casing depends on hardness, the shape and size of bamboo bar wall.In general, oblique trunking need penetrate inner area 6, enters mesozone 5, but does not penetrate mesozone 5.Carry out flattening process regular meeting with common press device and in the inner area of bamboo board 7, form crackle.These crackles may penetrate whole bamboo bar wall, and arrive top surface 9, cause on it tangible crackle or even allow bamboo bar wall 7 split.The formed oblique trunking of inner area that crosses bamboo bar sheet material 7 is tending towards discharging the pressure in the inner area, and makes flattening process easier under the situation that does not add deep torn grain.
In an embodiment of flattened bamboo panel, the inner area of the bamboo board of flattening is formed with a plurality of parallel oblique trunkings.As shown in Figure 4, a plurality of parallel oblique trunking is formed on the inner area of bamboo board 10.In an embodiment again of the bamboo board that flattens, be formed on the angle between roughly 10 degree and 60 are spent between the grain direction of oblique trunking and bamboo board.As shown in Figure 5, spend between 60 degree about 10 in the angle that forms between the grain direction of oblique trunking and bamboo board.
In another embodiment of the bamboo board of described flattening, two groups of oblique trunkings (in two directions) are formed on the inner area of bamboo board; Oblique trunking within every group is parallel to each other.It is important that two groups of wire casings are placed on the opposite side of grain direction, and each wire casing and the formed angle of grain direction are between about 10 degree and 60 degree.As shown in Figure 5, two groups of oblique trunkings 10,10a (in two directions) are formed on the inner area of bamboo board 7; Oblique trunking within every group is parallel to each other.Every group of wire casing is placed in the opposite side of grain direction, and by each wire casing and the formed angle of grain direction between about 10 degree and 60 degree.
In another embodiment of the present invention, the manufacture method of flattened bamboo panel may further comprise the steps: a) vertically cut thick bamboo tube along the whole length of thick bamboo tube, to form a slice or multi-disc bamboo bar wall, described bamboo bar wall comprises outside area, mesozone and inner area; B) described inner area is formed with a plurality of parallel wire casings, wherein said wire casing and grain direction are formed on the number of degrees between about 10 degree and 60 degree; C) soak and heat described bamboo bar wall, form softening bar wall (softening process) thus; And d) flattens described softening bar wall.Shown in Fig. 6,7,8 and 9, the bamboo bar wall spare after being formed with oblique trunking can use common flattening device (for example Fig. 8,9) to extend and flatten, and does not form significant crackle.
In another embodiment of the above-mentioned open method of making the bamboo board that flattens, in softening process, the bar wall is soaked and is heated to about 140 degree to 200 temperature of spending.In another embodiment, described temperature is preferably between about 160 ℃ and 190 ℃.
Described method may further include step: after flattening described bamboo bar wall, remove the outside area of described bamboo bar wall and the part of inner area.In an embodiment of the method for the bamboo board that make to flatten, after bamboo bar wall is flattened, remove the outside area of described bamboo bar wall and the part of inner area.Correspondingly, in an embodiment of the bamboo board that flattens, remove outermost portion from each described outside area and inner area.In another embodiment of the bamboo board that flattens, remove the thickness of about 0.5mm bamboo bar wall from the outermost portion of described outside area and inner area.
Disclosed method has greatly increased the bamboo utilization rate of raw materials and has increased the thickness of final plate product significantly in this invention.As a result, the average thickness of final sheet material can be up to 4-25mm.In another embodiment, the thickness of the bamboo board of flattening has the thickness from about 4mm to about 25mm.
At last, this invention provides the bamboo board of the flattening of being made by above-mentioned disclosed method.In certain embodiments, this invention further provides bamboo board that made by above-mentioned disclosed method, high density, flattening.
Claims (19)
1. the bamboo board of a flattening, described bamboo board comprises the bamboo stalk wall of individual layer, and wherein said bamboo stalk wall comprises outside area, mesozone and inner area, and each in wherein said outside area and the described inner area all comprises outermost portion.
2. the bamboo board of flattening according to claim 1, wherein said bamboo board is a non-adhesive.
3. the bamboo board of flattening according to claim 1, wherein said bamboo board is to be made by a single thick bamboo tube.
4. the bamboo board of flattening according to claim 1 has wherein been removed outermost portion from each described outside area and inner area.
5. the bamboo board of flattening according to claim 4 is wherein removed the roughly bamboo bar wall of 0.5mm thickness from the outermost portion of described outside area and inner area.
6. the bamboo board of flattening according to claim 1, wherein said bamboo board has the thickness from about 4mm to about 25mm.
7. the bamboo board of flattening according to claim 1, the inner area of wherein said bamboo bar wall is formed with many parallel oblique trunkings.
8. the bamboo board of flattening according to claim 7 is formed with between the grain direction of wherein said oblique trunking and described bamboo board about 10 and spends to the angle between 60 degree.
9. a method of making the bamboo board of flattening comprises the steps:
A) vertically cut thick bamboo tube along the whole length of thick bamboo tube, to form a slice or multi-disc bamboo bar wall, described bamboo bar wall comprises outside area, mesozone and inner area;
B) soak and heat described bamboo bar wall, form softening bar wall thus; And
C) with gradually or the rapid technology of multistep flatten described softening bar wall.
10. method according to claim 9 wherein flattens by being pushed on columnar rotating shaft gradually through softening bar wall, is perhaps flattened gradually by a plurality of or one group of pressure setting institute, and each described pressure setting has different compacting radians.
11. method according to claim 10, the softening bar wall of wherein said warp be earlier by pressure setting compacting in described group, that have maximum compacting radian, and at last by in described group, have a pressure setting compacting of minimum compacting radian.
12. method according to claim 9, the softening bar wall of wherein said warp flattens gradually by contacting a plurality of rollers or one group of roller, and each roller has different radians.
13. method according to claim 9, the softening bar wall of wherein said warp at first by in described group, have the roll-in system of maximum compacting radian, and at last by in described group, have a roll-in system of minimum compacting radian.
14. a method of making the bamboo board of flattening comprises the steps:
A) vertically cut thick bamboo tube along the whole length of thick bamboo tube, to form a slice or multi-disc bamboo bar wall, described bamboo bar wall comprises outside area, mesozone and inner area;
B) described inner area is formed with a plurality of parallel wire casings, wherein said wire casing and grain direction form the angle between about 10 degree and 60 degree;
C) soak and heat described bamboo bar wall, form softening bar wall thus; And
D) flatten described softening bar wall.
15. according to claim 9 or 14 described methods, wherein in softening process, described bar wall is soaked and is heated to about 140 ℃ to 200 ℃ temperature.
16. method according to claim 15, wherein said temperature are preferably between about 160 ℃ to 190 ℃.
17., wherein after flattening described bamboo bar wall, remove the outside area of described bamboo bar wall and the part of inner area according to the arbitrary described method of claim 9-16.
18. the bamboo board of a flattening, described bamboo board is by according to the arbitrary described method manufacturing of claim 9-17.
19. a highdensity flattened bamboo panel, described bamboo board is by according to arbitrary described method manufacturing among the claim 9-18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200780036532.9A CN101528431B (en) | 2006-09-29 | 2007-09-28 | Flattened bamboo panel |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620108337.5 | 2006-09-29 | ||
| CN200620108337.5U CN200957623Y (en) | 2006-09-29 | 2006-09-29 | High-density flattening plate |
| IB2007033366 | 2007-09-28 | ||
| CN200780036532.9A CN101528431B (en) | 2006-09-29 | 2007-09-28 | Flattened bamboo panel |
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| Publication Number | Publication Date |
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| CN101528431A true CN101528431A (en) | 2009-09-09 |
| CN101528431B CN101528431B (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200780036532.9A Active CN101528431B (en) | 2006-09-29 | 2007-09-28 | Flattened bamboo panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632532A (en) * | 2012-04-20 | 2012-08-15 | 湖南省林业科学院 | Bamboo block thermal shaping method and device |
| CN104972540A (en) * | 2014-04-14 | 2015-10-14 | 杭州新竹文化创意有限公司 | Bamboo material spreading method |
| CN113858353A (en) * | 2021-09-18 | 2021-12-31 | 武夷学院 | Bamboo flattening processing device and processing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107775A (en) * | 1993-10-07 | 1995-09-06 | 鹿儿岛县 | Method for forming a curved plate into a flat plate and apparatus therefor |
| CN1559766A (en) * | 2004-02-17 | 2005-01-05 | 蒋甫定 | Bamboo plate and its production method |
| CN200957623Y (en) * | 2006-09-29 | 2007-10-10 | 杭州大庄地板有限公司 | High-density flattening plate |
-
2007
- 2007-09-28 CN CN200780036532.9A patent/CN101528431B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107775A (en) * | 1993-10-07 | 1995-09-06 | 鹿儿岛县 | Method for forming a curved plate into a flat plate and apparatus therefor |
| CN1559766A (en) * | 2004-02-17 | 2005-01-05 | 蒋甫定 | Bamboo plate and its production method |
| CN200957623Y (en) * | 2006-09-29 | 2007-10-10 | 杭州大庄地板有限公司 | High-density flattening plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632532A (en) * | 2012-04-20 | 2012-08-15 | 湖南省林业科学院 | Bamboo block thermal shaping method and device |
| CN102632532B (en) * | 2012-04-20 | 2014-06-04 | 湖南省林业科学院 | Bamboo block thermal shaping method and device |
| CN104972540A (en) * | 2014-04-14 | 2015-10-14 | 杭州新竹文化创意有限公司 | Bamboo material spreading method |
| CN113858353A (en) * | 2021-09-18 | 2021-12-31 | 武夷学院 | Bamboo flattening processing device and processing method |
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| Publication number | Publication date |
|---|---|
| CN101528431B (en) | 2014-10-22 |
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