CN101642920B - Wood shaping method - Google Patents
Wood shaping method Download PDFInfo
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- CN101642920B CN101642920B CN 200910164833 CN200910164833A CN101642920B CN 101642920 B CN101642920 B CN 101642920B CN 200910164833 CN200910164833 CN 200910164833 CN 200910164833 A CN200910164833 A CN 200910164833A CN 101642920 B CN101642920 B CN 101642920B
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Abstract
The present invention provides a wood shaping method which can be used for shaping even a knot exits in the wood obtained from the collected material in the raw wood material. The wood shaping method comprises the following steps: a material collection step for obtaining the wood in the collected material in the raw wood material with a mode that the fiber direction of the woos is approximately perpendicular with the relative moving direction of a pair of moulds at a state that the wood is configured to a preset position between a pair of moulds; a cutting step for cutting one part of the knot at a state that the knot with the fiber direction crossed with the fiber direction of the wood in the wood obtained from the collected material in the material collection step; and a compression step for configuring the part of knot of the cut wood in the cutting step to a preset position between the pair of moulds, clamping the configured wood through a pair of moulds and exerting a compression force to the wood at a vapour environment with higher temperature and higher pressure compared with the atmosphere.
Description
Technical field
The present invention relates to a kind of timber compression molding that obtains of will drawing materials from former timber is the Wood shaping method of reservation shape.
Background technology
In recent years, the timber as natural material received much concern.Because timber has various wood grains, therefore according to producing individual difference from the position that former timber is drawn materials is different, described individual difference becomes the individual character of each product.In addition, use the flaw and the color and luster variation itself that produce also to become unique style because of long-term, allow the user produce cordial feeling.Because these reasons, with timber as raw material can produce adopt synthetic resin or light metal product did not have, personalized and the product of grade is arranged, therefore receive publicity as raw-material timber, its forming technique also the while in progress by leaps and bounds.
In the past, forming technique as relevant timber, known have a following technology: a timber compression after softening will absorb water, and with compression direction almost parallel ground with the cutting of this timber and after obtaining tabular once fixing product, make this once fixing product add heat absorbing water and make simultaneously it be configured as predetermined 3D shape (for example, with reference to patent documentation 1).In addition, it is also known for following technology: a compressed timber under the state after softening the processing is carried out temporary fixed, thereby then make its recovery carry out die forming (for example, with reference to patent documentation 2) by this timber being put into mould.
Patent documentation 1: No. 3078452 communique of Japan Patent
Patent documentation 2: Japanese kokai publication hei 11-77619 communique
Yet in above-mentioned prior art, when there was knaur in the timber as the shaping object, the hardness at knaur place was higher, and can the unfavorable conditions such as buckling occur because applying compression stress, thereby had to just process as waste wood when drawing materials.
Summary of the invention
The present invention In view of the foregoing makes, and its purpose is to provide a kind of Wood shaping method, even so that the timber that obtains of drawing materials from former timber has knaur also can form.
In order to solve above-mentioned problem, achieve the goal, Wood shaping method of the present invention is for by adopting a pair of mould that timber is applied the be shaped Wood shaping method of described timber of compression stress, it is characterized in that, this Wood shaping method comprises: the operation of drawing materials, be disposed at described timber under the state in the precalculated position between the described a pair of mould, with the machine direction of described timber and described a pair of mould relatively move direction roughly the mode of quadrature from former timber, draw materials and obtain described timber; Cutting process exists in the described timber that obtains of drawing materials in the described operation of drawing materials in the situation of the knaur that machine direction and the machine direction of described timber intersect, and the part of this knaur is machined away; And compression section, be in a ratio of in the water vapor atmosphere of HTHP with atmosphere, the described timber that will be cut in the part of knaur described in the described cutting process is disposed at the described precalculated position between the described a pair of mould, applies compression stress by this described timber that configures of described a pair of mould holding and to it.
In addition, on the basis of foregoing invention, Wood shaping method of the present invention is characterised in that, in described cutting process, makes the thickness of described knaur less than or equal to the thickness after compressed around this knaur.
In addition, on the basis of foregoing invention, Wood shaping method of the present invention is characterised in that at least one mould in the described a pair of mould is provided with elastomeric element on the surface with described timber butt.
In addition, on the basis of foregoing invention, Wood shaping method of the present invention is characterised in that a mould in the described a pair of mould has protuberance, and another mould has the shape recess corresponding with described protuberance, and described elastomeric element is located in the described recess.
According to the present invention, for under the state that is disposed at the precalculated position between a pair of mould with the roughly mode of the quadrature timber of from former timber, drawing materials and obtaining of direction that relatively moves of machine direction and a pair of mould, in this timber, exist in the situation of the knaur that machine direction and the machine direction of timber main body intersect, after knaur is cut, compress, can knaur not applied the compression stress identical with main body thus.Therefore, even having knaur, the timber that obtains of drawing materials from former timber also can form.
Description of drawings
Fig. 1 is the flow chart that the summary of the described Wood shaping method of an embodiment of the invention is shown.
Fig. 2 is the figure of summary that the operation of drawing materials of the described Wood shaping method of an embodiment of the invention is shown.
Fig. 3 is the cutaway view along the A-A line of Fig. 2.
Fig. 4 is the figure of summary that the cutting process of the described Wood shaping method of an embodiment of the invention is shown.
Fig. 5 is the figure of summary that the compression section of the described Wood shaping method of an embodiment of the invention is shown.
Fig. 6 is the cutaway view along the B-B line of Fig. 5.
Fig. 7 is the cutaway view that is illustrated under the state that the distortion of timber in the compression section of the described Wood shaping method of an embodiment of the invention finishes substantially.
Fig. 8 is the stereogram of the wood structure after drying process that the described Wood shaping method of an embodiment of the invention is shown finishes.
Fig. 9 is the figure of summary that the heating trimming of the described Wood shaping method of an embodiment of the invention is shown.
Figure 10 is the stereogram that the structure of the compressed wood article by the described Wood shaping method formed thereby of an embodiment of the invention is shown.
Figure 11 illustrates the stereogram of structure that the digital camera of compressed wood article shown in Figure 10 is equipped with in outsourcing.
Figure 12 is the figure that is illustrated in other structures of employed mould in the compression section of the described Wood shaping method of an embodiment of the invention.
Label declaration
1: former timber; 2,3: timber; 2a, 3a, 4a: main board portion; 2b, 2c, 3b, 3c, 4b, 4c: side plate; 4,5: compressed wood article; 11,12,13,31,32: mould; 14: elastomeric element; 33,34: heater; 35: control device; 41,42: peristome; 43: breach; 100: digital camera; 101: image pickup part; 102: flash lamp; 103: shutter release button; 111,131,311: recess; 121,321: protuberance; G: wood grain; K: knaur.
The specific embodiment
Below, describe being used for implementing best mode of the present invention (being called later on " embodiment ") with reference to accompanying drawing.In addition, the accompanying drawing of institute's reference is schematic diagram in the following description, when same object shown in the different accompanying drawings, sometimes also can have the different situation of size difference or engineer's scale.
Fig. 1 is the flow chart of summary that the processing of the described Wood shaping method of an embodiment of the invention is shown.The timber (step S1) of at first, from former timber, drawing materials and obtaining reservation shape.Fig. 2 is the draw materials figure of structure of the timber that obtains of the summary of schematically illustrated this operation of drawing materials and illustrating.In the operation of drawing materials, the former timber 1 such as the cleaning timber under being in uncompressed state, the timber 2 of drawing materials and roughly being plate-like by modes such as cuttings.For former timber 1, from Japanese cypress, Thujopsis dolabrata, Chinese parasol tree, China fir, pine, cherry wood, beech tree, ebony, narra (ん), bamboo, teak, mahogany, rosewood (ロ one ズ ウ Star De) etc., select only material to get final product.
Fig. 3 is the cutaway view along the A-A line of Fig. 2.Fig. 2 and timber 2 shown in Figure 3 have: flat main board portion 2a, and it has roughly rectangular surfaces; Two side plate 2b, they extend with respect to main board portion 2a respectively agley from opposed two long legs on the surface of main board portion 2a; With two side plate 2c, they extend with respect to main board portion 2a respectively agley from opposed two short legs on the surface of main board portion 2a.From former timber 1, drawing materials when obtaining timber 2, under the state between the employed a pair of mould (mould 11,12) in the compression section (step S5) that timber 2 is disposed at timber 2 described later, with the machine direction L1 of timber 2 and a pair of mould relatively move direction roughly the mode of quadrature draw materials.Also can mention when compression section is described for this point.In timber 2, have the knaur K that connects along the thickness direction of main board portion 2a.The machine direction L2 of this knaur K and its machine direction L1 on every side intersect.In addition, in Fig. 3, show for example roughly situation of quadrature of the machine direction L2 of this knaur K and the machine direction L1 around it.
The timber 2 that obtains of drawing materials as mentioned above has the outage corresponding with volume reducing amount in compression section described later.In addition, in Fig. 2, the wood grain G that shows timber 2 is the situation with the straight grain timber (Jiu order material) of the machine direction almost parallel of timber 2, yet the timber that obtains of drawing materials in the operation of drawing materials also can be flat grain timber (plate order material) or end grain timber (wood mouthful material) etc.
Then, in timber 2, exist in the situation of the knaur that the machine direction L1 of machine direction L2 and main body intersects (step S2 for certainly), thereby make knaur K attenuation (step S3) by the part of knaur K is cut.Fig. 4 is the figure that the structure of timber 2 behind the cutting process is shown, and is the cutaway view in the cross section identical with Fig. 3.In Fig. 4, thereby knaur K is cut the wall thickness attenuation from the concave side of main board portion 2a.The situation of like this only cutting from the surface of timber 2 one sides is adjusted thickness easily.
In addition, more preferably, the thickness (wall thickness) of the knaur K after the cutting is less than or equal to the thickness around the knaur K after compressing.By the thickness of adjustment knaur K like this, in compression section described later, substantially can not apply to knaur K the compression stress of its thickness direction.Therefore, can prevent that knaur K place from the unfavorable conditions such as buckling occuring.In the following description, the thickness that in cutting process knaur K is cut into around the knaur K that makes after its thickness and the compression is identical.
In timber 2, do not exist in the situation of the knaur that machine direction and the machine direction of main body intersect (step S2 is for negating), enter into step S4 described later.
In step S4, the timber 2 that will obtain by drawing materials is placed the scheduled time and is made it excessively absorb moisture being in a ratio of with atmosphere in the water vapor atmosphere of HTHP, thereby makes timber 2 softening (step S4).Steam temperature is about 100～230 ℃, and pressure is about 0.1～3.0MPa (MPa).Can realize this water vapor atmosphere by for example using pressure vessel.In the situation of working pressure container, thereby by being placed into, timber 2 make it softening in this pressure vessel.In addition, also can be after supplying with moisture to timber 2 surface frequency electromagnetic waves by similar microwave (microwave) 2 heating are softened it to timber, also timber 2 can be boiled and make it softening, make it softening in the water vapor atmosphere to replace timber 2 is placed into.
After this, the softening timber 2 (step S5) of compression.In this compression section, in the water vapor atmosphere identical with softening process, come clamping timber 2 and it is applied compression stress by a pair of mould, thereby make timber 2 be deformed into predetermined three-dimensional shape.In the situation that timber 2 has been softened in pressure vessel, then in this pressure vessel, timber 2 compressed and get final product.
Fig. 5 shows the summary of compression section, and is illustrated in the figure of the structure of the major part of employed a pair of mould in the compression section.Fig. 6 is the cutaway view along the B-B line of Fig. 5, shows the cross section identical with Fig. 3 of timber 2.As shown in Figure 5 and Figure 6, by a pair of mould 11,12 clamping timber 2, and it is applied pre-determined compressive force.In addition, as illustrated among the above-mentioned step S1, under the state that timber 2 is arranged between the mould 11,12, with the direction that relatively moves (above-below direction of Fig. 5 and Fig. 6) of the machine direction L1 of the main body of timber 2 and mould L1, L2 roughly the mode of quadrature draw materials.
In compression section, apply the mould 11 of compression stress from timber 2 tops for having the die of level and smooth planar recess 111, the surperficial butt of the outstanding side of described recess 111 and timber 2.If establishing the radius of curvature that is bent to the surface of part of side plate 2b with the surface of mould 11 opposed sides from main board portion 2a is RO, if with the radius of curvature on the surface of the recess 111 of this surface butt be RA, then two radius of curvature R O and RA satisfy the relation of RO＞RA.
Therewith relatively, in compression section, apply the mould 12 of compression stress from timber 2 belows for having the punch of level and smooth planar protuberance 121, the surperficial butt of the concave side of described protuberance 121 and timber 2.If establishing the radius of curvature that is bent to the surface of part of side plate 2b with the surface of mould 12 opposed sides from main board portion 2a is RI, if with the radius of curvature on the surface of the protuberance 121 of this surface butt be RB, then two radius of curvature R I and RB satisfy the relation of RI＞RB.
As mentioned above, beginning until reach the process of state shown in Figure 7 from mould 11,12 being carried out matched moulds, knaur K is not subject to the compression stress on the thickness direction substantially, yet in the deformation process of timber 2, because the main body of timber 2 can be squeezed into knaur K below, therefore sometimes also can be subject to small compression stress at thickness direction.Yet because the compression stress that is subject in this situation is minimum, so knaur K can not produce the situation of buckling.
After compression section finishes, keep under the state of matched moulds at mould 11,12, and by around mould 11,12, adding the steam higher than above-mentioned steam temperature, with the shape immobilization (step S6) of timber 2.In pressure vessel, carry out in the situation of this immobilization processing, as long as in pressure vessel, be blown into than the higher steam of steam temperature in the compression operation.
Then, with mould 11,12 and timber 2 be put in the atmosphere, make timber 2 dryings (step S7).At this moment, also can remove mould 11,12 matched moulds state, thereby make mould 11 or 12 leave the drying that promotes timber 2 from timber 2.The wall thickness of the timber 2 behind dry the end be preferably the timber 2 before the compression wall thickness about 30～50%.This compression ratio that is equivalent to the timber 2 except knaur K is about 0.50～0.70.Below, the timber 2 after the drying program end is called " timber 3 ".Fig. 8 is the stereogram that the structure of timber 3 is shown.Timber 3 has main board portion 3a and side plate 3b, the 3c corresponding with main board portion 2a and side plate 2b, 2c difference.
After this, in atmosphere, timber 3 is heated, simultaneously the shape of timber 3 is carried out shaping (step S8).Fig. 9 is the figure of the summary of schematically illustrated heating trimming.In the heating trimming, come clamping timber 3 by a pair of mould 31,32 as the heating shaping mould.
In Fig. 9, be positioned at mould 31 above the timber 3 and have level and smooth planar recess 311 with the surperficial butt of the outstanding side of timber 3.On the other hand, in Fig. 9, be positioned at mould 32 below the timber 3 and have level and smooth planar protuberance 321 with the surperficial butt of the concave side of timber 3.In that the shape in the mould 31 behind mould 31,32 matched moulds and the gap between the mould 32 is corresponding with the shape after timber 3 shapings.Preferably, the shape after the shaping is by the shape of the timber 3 before the heating trimming is slightly made to be out of shape the shape that just can access.Like this, before and after the heating trimming, the shape of timber 3 does not have larger variation, so occur the generation of the unfavorable conditions such as crackle in the time of can preventing that timber 3 carried out shaping.
Be separately installed with the heater 33,34 that produces heat in mould 31,32 inside. Heater 33,34 is connected with the control device 35 with temp. control function, and based on the control of control device 35 and generate heat, thereby respectively mould 31,32 is heated.Control device 35 is control heater 33,34 respectively, so that the temperature of mould 31,32 when clamping timber 3 roughly is stabilized in the high temperature about 150～200 ℃.
In the heating trimming, timber 3 is continued time of clampings and mould 31,32 mold temperature by mould 31,32, should give the character etc. of timber 3 after the characteristic that has according to timber 3 and the processing and determine to get final product.In addition, said " characteristic that timber 3 has " also comprises kind as the raw-material former timber 1 of timber 3, the place of production, growing environment, growth conditions etc. except the shape of timber 3 herein.In addition, " should give the character of timber 3 " and comprise the intensity etc. of the timber 3 after color and luster, gloss and the moulding on timber 3 surfaces after the moulding.
Behind the heating trimming, timber 3 is finish-machined to net shape (step S9).Specifically, by cutting the end face of smooth timber 3, perhaps form predetermined hole and breach etc.
Figure 10 is the stereogram that the structure of the compressed wood article of moulding by the manufacture method of compressed wood article described above is shown.Compressed wood article 4 shown in this figure is loaded on the external packing body of digital camera front surface side (with the opposed side of subject) for outsourcing, and it has corresponding with main board portion 3a and side plate 3b, 3c respectively main board portion 4a and side plate 4b, 4c.Main board portion 4a has the peristome 41 of the drum that the image pickup part for digital camera exposes and the peristome 42 of the rectangular shape that exposes for the flash lamp of digital camera.Side plate 4b has the breach 43 of the semicircular cylinder shape of exposing for shutter release button.
Figure 11 illustrates the stereogram of structure that carries out the digital camera of external packing by 4 pairs of front surface sides of compressed wood article.Digital camera 100 shown in this figure comprises image pickup part 101, flash lamp 102 and shutter release button 103.The front surface side of the digital camera 100 that confession image pickup part 101 and flash lamp 102 expose is carried out external packing by compressed wood article 4.On the other hand, carry out external packing in the rear side of digital camera 100 by means of the compressed wood article 5 that adopts timber 2 and compressed wood article 4 similarly to form.Like this, will be by present embodiment compressed wood article after described Wood shaping method carries out shaping be applied in the situation of external packing body of digital camera, more preferably its wall thickness is about 1.6～2.0mm.
In addition, the electronic equipment of the described Wood shaping method of present embodiment except digital camera be with outside the external packing body, can also be applied to form in the situation of construction material etc. of tableware, various framework, tabular or column shape.
According to the above description an embodiment of the invention, under the state that is disposed at the precalculated position between a pair of mould, with machine direction and a pair of mould relatively move direction roughly the mode of quadrature from former timber, draw materials and obtain timber, in this timber, exist in the situation of the knaur that machine direction and the machine direction of timber main body intersect, compress after knaur cut, thus can be not to the knaur compression stress identical with main body of exerting pressure.Therefore, even the timber that obtains of drawing materials from former timber has knaur, also can form.
In addition, according to present embodiment, because therefore the thickness of knaur can prevent that knaur from producing the unfavorable conditions such as buckling because of compression less than or equal to the thickness after compressed around the knaur when cutting knaur a part of.
Figure 12 is the figure of other structures of employed mould in the compression section of the described Wood shaping method of present embodiment.Surface with recesses 131 timber 2 butts the mould 13 shown in this figure is made of the elastomeric element 14 that TR thin rubber forms.Like this, by with the surface of timber 2 butts elastomeric element 14 being set in the surface of mould 13, thereby even knaur K has been applied compression stress, the part of this compression stress also can be absorbed by elastomeric element 14.Therefore, can prevent more reliably that knaur K from producing the unfavorable conditions such as buckling because of compression.
In addition, the present invention should not be limited to above-mentioned embodiment.For example, the present invention comprises that also the machine direction of the machine direction of knaur and timber main body is with the situation of about 45 ° angular cross.But, in this case, because that knaur also can not produce buckling ground is compressed, therefore the thickness of knaur might not be cut to below the thickness after compressed around the knaur.Example also can be clear and definite thus, and the present invention also comprises herein the various embodiments of not record etc., can implement various design alterations within not breaking away from by the scope of the determined technological thought of claims.
Claims (4)
1. Wood shaping method, this Wood shaping method is characterized in that by adopting a pair of mould that timber is applied the compression stress described timber that is shaped,
This Wood shaping method comprises:
The operation of drawing materials, be disposed at described timber under the state in the precalculated position between the described a pair of mould, with the machine direction of described timber and described a pair of mould relatively move direction roughly the mode of quadrature from former timber, draw materials and obtain being the roughly described timber of plate-like;
Cutting process, drawing materials in the described operation of drawing materials exists in the described timber that obtains in the situation of the knaur that machine direction and the described machine direction of described timber intersect, and only machines away from the concave side of the described timber that the is described roughly plate-like part with this knaur; With
Compression section, be that 100～230 ℃, pressure are in the water vapor atmosphere of 0.1～3.0MPa in temperature, the described timber that will be cut in the part of knaur described in the described cutting process is disposed at the described precalculated position between the described a pair of mould, applies compression stress by this described timber that configures of described a pair of mould holding and to it.
2. Wood shaping method according to claim 1 is characterized in that,
In described cutting process, make the thickness of described knaur less than or equal to the thickness after compressed around this knaur.
3. Wood shaping method according to claim 1 and 2 is characterized in that,
At least one mould in the described a pair of mould is provided with elastomeric element on the surface with described timber butt.
4. Wood shaping method according to claim 3 is characterized in that,
A mould in the described a pair of mould has protuberance, and another mould has the shape recess corresponding with described protuberance,
Described elastomeric element is located in the described recess.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008206409A JP5248949B2 (en) | 2008-08-08 | 2008-08-08 | Wood molding method |
| JP2008-206409 | 2008-08-08 | ||
| JP2008206409 | 2008-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101642920A CN101642920A (en) | 2010-02-10 |
| CN101642920B true CN101642920B (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910164833 Expired - Fee Related CN101642920B (en) | 2008-08-08 | 2009-08-07 | Wood shaping method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5248949B2 (en) |
| CN (1) | CN101642920B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5754836B2 (en) * | 2010-08-06 | 2015-07-29 | 永大産業株式会社 | Method for producing consolidated wood, consolidated wood and decorative board |
| TW201343360A (en) * | 2012-04-20 | 2013-11-01 | Wan-Qi Tu | Manufacturing method for environmentally friendly shell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6616186A (en) * | 1985-12-07 | 1987-06-11 | Toyota Jidosha Kabushiki Kaisha | Process for producing molded wooden products having a hole therein |
| US5108691A (en) * | 1986-09-03 | 1992-04-28 | Astechnologies, Inc. | Compressing and shaping thermoformable mats using superheated steam |
| CN1910024A (en) * | 2004-01-20 | 2007-02-07 | 奥林巴斯株式会社 | Method of processing wooden material and processed piece of wood |
| CN101035656A (en) * | 2004-10-22 | 2007-09-12 | 奥林巴斯株式会社 | Method of processing wood |
| CN101039785A (en) * | 2004-11-08 | 2007-09-19 | 奥林巴斯株式会社 | Article of compressed lumber and method of manufacturing the article |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE421507B (en) * | 1980-10-30 | 1982-01-04 | Darje Nils Ab | Method for increasing the hardness of wood by compression |
| JP2006068957A (en) * | 2004-08-31 | 2006-03-16 | Olympus Corp | Cladding material and electronic device using the same |
| JP4269004B2 (en) * | 2004-10-22 | 2009-05-27 | 広島県 | Wood consolidation method |
| JP4199210B2 (en) * | 2005-04-01 | 2008-12-17 | オリンパス株式会社 | Wood processing method |
| JP2007098640A (en) * | 2005-09-30 | 2007-04-19 | Olympus Corp | Processing method of wood and cladding material for electronic device |
-
2008
- 2008-08-08 JP JP2008206409A patent/JP5248949B2/en not_active Expired - Fee Related
-
2009
- 2009-08-07 CN CN 200910164833 patent/CN101642920B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6616186A (en) * | 1985-12-07 | 1987-06-11 | Toyota Jidosha Kabushiki Kaisha | Process for producing molded wooden products having a hole therein |
| US5108691A (en) * | 1986-09-03 | 1992-04-28 | Astechnologies, Inc. | Compressing and shaping thermoformable mats using superheated steam |
| CN1910024A (en) * | 2004-01-20 | 2007-02-07 | 奥林巴斯株式会社 | Method of processing wooden material and processed piece of wood |
| CN101035656A (en) * | 2004-10-22 | 2007-09-12 | 奥林巴斯株式会社 | Method of processing wood |
| CN101039785A (en) * | 2004-11-08 | 2007-09-19 | 奥林巴斯株式会社 | Article of compressed lumber and method of manufacturing the article |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101642920A (en) | 2010-02-10 |
| JP2010042529A (en) | 2010-02-25 |
| JP5248949B2 (en) | 2013-07-31 |
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