CN1178786C - Laminated sheet material and method for making same - Google Patents
Laminated sheet material and method for making same Download PDFInfo
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- CN1178786C CN1178786C CNB011024763A CN01102476A CN1178786C CN 1178786 C CN1178786 C CN 1178786C CN B011024763 A CNB011024763 A CN B011024763A CN 01102476 A CN01102476 A CN 01102476A CN 1178786 C CN1178786 C CN 1178786C
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- veneer
- wood
- sheet material
- laminated sheet
- pressing process
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Abstract
The invention provides a laminated material 20 utilizing a light and soft material like a poplar and a method for manufacturing the same. A warp or a bend of a veneer 10 is suppressed by alternatively superposing root side ends each having a large water content ratio and branch side ends each having a small water content ratio. In a cold pressing step, pressing and pressure releasing are repeated, temporarily tightened. In a hot pressing step, pressing is conducted at a lower pressure than the pressing pressure of the cold pressing step, hence the warp or the bend of the veneer 10 is prevented more accurately, and utilization of lumber resources is efficient.
Description
Technical field
The present invention relates to laminated sheet material and manufacture method thereof.
Background technology
Generally, laminated sheet material is log to be peeled thinly with lathe with the carpenter to make veneer, and veneer is overlapping in the same manner by the machine direction of each layer, makes with the binding agent bonding.Laminated sheet material is used to the making material of the structural material of building, the interior finish material of building utensil, floor, wall, roof etc., doorframe, beam, balustrade etc. mostly.
In the past, for the log of such laminated sheet material, can use the broad leaf tree of the coniferous trees of Japanese cypress, Chamaecyparis pisifera, dragon spruce etc. or Japanese Yue Hua, Japanese european bird cherry, light leaf birch, walnut, this times change ash tree, Manchurian ash tree etc.
At present and since extensively be distributed in the white poplar in the temperate zone in the Northern Hemisphere grow up fast, but stable supplying, and owing to be that light and soft material is processed easily, so as the paper pulp utilization or be used for the material of force fit plate, matchstick, plate class, rotating technics product, case class.
, the light and soft material of aspen is owing to being easy to generate deflection or bending, so be not used in the material of laminated sheet material.
Summary of the invention
The present invention is in view of such problem, and its purpose is to provide laminated sheet material and the manufacture method thereof that the light and soft material of aspen is used as material.
The present invention is a kind of laminated sheet material, wherein be make the branch side of a veneer overlaps with the root side of another veneer behind lamination a plurality of veneers, boning forms.
In the laminated sheet material of the present invention, the wood the inside of an above-mentioned veneer overlaps with the wood the inside of above-mentioned another veneer, and overlap in the wood surface of this another veneer and then with the wood surface of another veneer behind a plurality of veneers of lamination, boning forms.
In the laminated sheet material of the present invention, the log of veneer is to use white poplar.
The present invention is the manufacture method of laminated sheet material, comprise a plurality of veneer clustered operations that branch side and the root side of another veneer of a veneer are combined with overlapping with, in lamination the table that constitutes the even level veneer binding agent working procedure of coating of two sides coating heat-curing resin binding agent and, to carry out at normal temperatures through a plurality of veneers of above-mentioned group and operation and binding agent working procedure of coating at least 2 times press solidly with the temporary fixed cold pressing process that compresses of decompress(ion) and will be in cold pressing process the temporary fixed a plurality of veneers that compress be heated to the temperature of regulation, and the hot pressing process that presses solidly under than the low pressure of the consolidation pressure of cold pressing process.
In the manufacture method of laminated sheet material of the present invention, in above-mentioned clustered operation, the wood the inside of an above-mentioned veneer overlaps with the wood the inside of above-mentioned another veneer, and makes up a plurality of veneers in the wood surface of this another veneer and then with the wood surface of another veneer with overlapping.
In the above-mentioned laminated sheet material, the log of veneer is to use white poplar.
According to the present invention, because the little branch side of root side that the moisture content of veneer is big and moisture content is overlapped, so can suppress to cause the warpage and the bending of veneer owing to the difference of moisture content.Therefore, can use the veneer of making by the light and soft material of aspen to make laminated sheet material.
Log is being peeled when making veneer thinly with lathe with the carpenter, the wooden inboard of face that the outer surface of wood side of the face of the bark side of veneer bends to the core side of convex, trees bends to concavity, because will be between the wood surface of veneer and the wood the inside between lamination mutually, make that the bending direction of veneer of lamination is opposite mutually.Can further suppress the warpage and the bending of veneer when therefore, behind lamination, making laminated sheet material.
But the present invention is owing to the white poplar of effectively utilizing grow up fast and stable supplying, so can save the forest reserves.
The present invention is in clustered operation, because the little branch side of root side that the moisture content of veneer is big and moisture content is overlapped, so can suppress to cause owing to the difference of moisture content the warpage and the bending of veneer.
In addition, in cold pressing process, compress owing to press solidly repeatedly to conciliate to compress into to go temporarily, so the moisture in the binding agent is soaked in the whole veneer equably by pressing solidly, can discharge because moisture soaks into the stress that is produced by decompress(ion), can suppress to be contained in the warpage and the bending of the veneer that the moisture of heat-curing resin binding agent causes.
And then, in hot pressing process,, can greatly suppress more positively to prevent the warpage and the bending of veneer owing to press solidly the heat cure that the stress of generation promotes binding agent owing to use the pressure lower to press solidly than the consolidation pressure of cold pressing process.
The present invention is because the bending direction of the veneer of combination lamination on the contrary mutually, so can further suppress the warpage and the bending of veneer when making laminated sheet material after coincidence.
The present invention can save the forest reserves by effectively utilizing the white poplar of stable supplying.
Description of drawings
Fig. 1 is the flow chart of manufacture method of the laminated sheet material of expression one embodiment of the invention.
Fig. 2 is the key diagram of the clustered operation of this manufacture method of expression.
Fig. 3 is the key diagram of the cold pressing process of this manufacture method of expression.
Fig. 4 is the key diagram of the hot pressing process of this manufacture method of expression.
Fig. 5 is the stereogram of expression with the laminated sheet material of this manufacture method manufacturing.
The specific embodiment
Fig. 1 represents the manufacture method of the laminated sheet material of one embodiment of the present of invention form.This manufacture method has been to use from the log of Italian white poplar and has made laminated sheet material, by cutting process, primary drying operation, redrying operation, clustered operation, working procedure of coating, cold pressing process, hot pressing process, maintenance, cut off each operation and form.
In cutting process, be that Italian garden wood is used lathe with the carpenter, on one side supporting the center, two ends of log to rotate; Contact with blade on one side, from the bark side strip off successively of log, being processed into thickness is the rectangular veneer of 1.8mm ± 0.1mm.
In the primary drying operation, rectangular veneer sent into be dried to moisture content in the drier up to 28% ± 3%, cut into a plate in the outlet of drier.Then, in the redrying operation, with veneer drying up to moisture content below 7%.
In clustered operation, as shown in Figure 2, on the branch side end of veneer 10a, overlap the root side end of veneer 10b, and overlap the wood the inside of veneer 10b in the wood the inside of veneer 10a, overlap the branch side end of veneer 10c at the root side end of veneer 10b, and overlap branch side end and root side end, wood the inside and the wood surface of each veneer of wood surface ground combination of veneer 10c in the wood surface of veneer 10b.This moment even level veneer 10 with wood the inside as the veneer 10 of last, odd-level with wood surface as last ground assortment, so that the surface of the outer surface of wood of veneer 10 formation laminated sheet material.In addition, the undermost veneer for the bottom surface that forms laminated sheet material is as following with wood surface.The combination of veneer 10 piece number, preferably 15～30 pieces.
In working procedure of coating, in the veneer 10 that has made up in the table of the veneer 10 that constitutes even level the heat-curing resin binding agent of two sides coating alkaline phenol formaldehyde etc.Coating amount, preferably 330 ± 10g/m
2
In cold pressing process, as shown in Figure 3, use pressure 10kg/cm
2Press solidly lamination about 10 minutes of veneer, decompress(ion) is about 2 minutes then, it is repeated 2 operations after, use pressure 10kg/cm
2Press solidly up to interim settable cementitious more than 15 minutes, carry out lamination temporarily the pressing solidly of veneer 10.
In hot pressing process, a plurality of veneers 10 that temporarily press solidly in the cold pressing process are heated to 135 ± 2 ℃, as shown in Figure 4, use pressure 7kg/cm
2Pressed solidly about 14 minutes, 3.5kg/cm then reduces pressure
2, continued to press solidly 7 minutes, promote the heat cure of binding agent, bonding veneer 10.
Behind the hot pressing process, the veneer 10 that has bondd is carried out maintenance, be reduced to normal temperature.Be cut into square bar as shown in Figure 5 then, be molded into laminated sheet material 20.Then, as required, with crack or the hole landfill of putty with the surface, the repairing of grinding etc. with sand milling.
As mentioned above, in the manufacture method of the laminated sheet material of the present embodiment and the laminated sheet material 20 made by this manufacture method, because the branch side end that root side end that the moisture content of veneer 10 is big and moisture content are little is overlapped, can suppress effectively because the difference of moisture content causes the warpage and the bending of veneer 10.
Log is being peeled when making veneer 10 thinly with lathe with the carpenter, the wooden inside bend that the outer surface of wood side of the face of the bark side of formation veneer 10 bends to the face of convex, formation core side becomes concavity, but manufacture method of the present embodiment and laminated sheet material 20, because with reaching mutual lamination between the wood the inside between the wood surface of veneer 10, so the bending direction of the veneer 10 of lamination is opposite mutually.Can further suppress the warpage and the bending of veneer 10 when therefore, behind lamination, making laminated sheet material 20.
Particularly in the present embodiment, but, can save the forest reserves by effectively utilizing the Italian white poplar of grow up fast and stable supplying.
In addition, in cold pressing process, because pressing solidly reconciliation repeatedly compresses into capable temporary fixed, so the moisture in the binding agent is soaked in the veneer 10 equably by pressing solidly, can discharge because moisture soaks into the stress of generation by decompress(ion), can suppress the warpage and the bending of the veneer 10 that the moisture in the heat-curing resin binding agent causes.
And then, in hot pressing process,,, more positively prevent the warpage and the bending of veneer 10 so can greatly suppress to promote the heat cure of binding agent owing to press solidly the stress of generation owing to use the pressure lower to press solidly than the consolidation pressure of cold pressing process.
Claims (2)
1. one kind with the laminated sheet material of white poplar as veneer, the branch side that it is characterized in that a veneer overlaps the ground lamination with the root side of another veneer, and the wood the inside of a described veneer overlaps with the wood the inside of described another veneer, and the wood surface of this another veneer so overlap a plurality of veneers of ground lamination with the wood surface of another veneer after, bonding forms.
2. one kind with the manufacture method of white poplar as the laminated sheet material of veneer, it is characterized in that comprising following operation: the branch side of a veneer is overlapped with the root side of another veneer, and the wood the inside of a described veneer is overlapped with the wood the inside of described another veneer, and the wood surface of this another veneer and then overlap with the wood surface of another veneer makes up the clustered operation of a plurality of veneers by this way; In lamination the table that constitutes the even level veneer binding agent working procedure of coating of two sides coating heat-curing resin binding agent; To carry out at least 2 times the temporary fixed cold pressing process with decompress(ion) of pressing solidly through a plurality of veneers of above-mentioned group and operation and binding agent working procedure of coating at normal temperatures; Will be in cold pressing process the temporary fixed a plurality of veneers that compress be heated to the temperature of regulation, and the hot pressing process that presses solidly under than the low pressure of the consolidation pressure of cold pressing process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP204764/2000 | 2000-07-06 | ||
| JP2000204764A JP2002018807A (en) | 2000-07-06 | 2000-07-06 | Laminated material and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1333129A CN1333129A (en) | 2002-01-30 |
| CN1178786C true CN1178786C (en) | 2004-12-08 |
Family
ID=18701972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011024763A Expired - Fee Related CN1178786C (en) | 2000-07-06 | 2001-02-07 | Laminated sheet material and method for making same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2002018807A (en) |
| CN (1) | CN1178786C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008173904A (en) * | 2007-01-19 | 2008-07-31 | Matsushita Electric Works Ltd | Woody plywood |
| JP2012111129A (en) * | 2010-11-25 | 2012-06-14 | Mywood 2 Kk | Laminated material |
| JP2012111128A (en) * | 2010-11-25 | 2012-06-14 | Mywood 2 Kk | Laminated material |
| CN102582195A (en) * | 2011-01-05 | 2012-07-18 | 嘉善新富华木业有限公司 | Method for adhering tripolycyanamide to plate |
| JP6083691B2 (en) * | 2012-07-17 | 2017-02-22 | 株式会社パームホルツ | Manufacturing method of laminated plywood |
| CN103072159B (en) * | 2013-01-28 | 2014-12-24 | 南京工业大学 | Prestressed laminated wood with creep deformation resistance and preparation method and application thereof |
| JP2015174280A (en) * | 2014-03-14 | 2015-10-05 | ミサワホーム株式会社 | Method for manufacturing laminate material and laminate material |
| EP3543000A1 (en) * | 2018-03-21 | 2019-09-25 | EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt | Manufacturing method of shaped multi-layer plant-fibre based components |
-
2000
- 2000-07-06 JP JP2000204764A patent/JP2002018807A/en active Pending
-
2001
- 2001-02-07 CN CNB011024763A patent/CN1178786C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1333129A (en) | 2002-01-30 |
| JP2002018807A (en) | 2002-01-22 |
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