CN203156874U - Laminated intermediate board with solid veneers - Google Patents
Laminated intermediate board with solid veneers Download PDFInfo
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- CN203156874U CN203156874U CN 201320182866 CN201320182866U CN203156874U CN 203156874 U CN203156874 U CN 203156874U CN 201320182866 CN201320182866 CN 201320182866 CN 201320182866 U CN201320182866 U CN 201320182866U CN 203156874 U CN203156874 U CN 203156874U
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Abstract
The utility model provides a laminated intermediate board with solid veneers. The laminated intermediate board with the solid veneers comprises a base material and the solid veneers. The solid veneers are adhered on the surface of the base material, two ends of each solid veneer are adhered on the surface of the base material, an arched portion is arranged between the two ends, which are adhered with the base material, of each solid veneer, the length of each arched portion is 1/3-1/4 of the distance between the two ends of the corresponding solid veneer, the height of the highest portion of each arched portion is 0.5-1% of the distance between the two ends of the corresponding solid veneer, the moisture content of each solid veneer is higher than or equal to 40%, and each two adjacent solid veneers adhered on the base material are in seamless butt joint with each other. The laminated intermediate board has the advantages that a laminated board which is made from the laminated intermediate board with the solid veneers by means of hot pressing is high in surface evenness, and knots of the laminated board have few ring cracks and are low in cracking.
Description
Technical field
Present technique relates to a kind of hot pressing veneer method of solid wood veneer and is covered with the solid wood veneer overlay intermediate plate of solid wood veneer, specifically a kind of veneer method of high-moisture percentage solid wood veneer and the solid wood veneer overlay intermediate plate that is covered with high-moisture percentage solid wood veneer.
Background technology
Current, the veneer application of solid wood veneer is more and more wider, comprises the veneer of solid wooden compound floor, furniture surface veneer, decorations veneer etc.But present solid wood veneer facing technology mainly adopts the veneer method of dried veneer, will carry out veneer after the solid wood veneer drying more specifically.This method has three kinds of drawbacks, the one, before veneer, need to carry out the solid wood veneer is carried out the dry plate drying, this has increased production cost, the 2nd, the solid wood veneer after the drying is because the distortion flexural deformation that seasoning defect drying defect produces causes the veneer out-of-flatness, and the 3rd, the solid wood veneer of drying can produce the phenomenon that ring crack and knot ftracture around knot carrying out veneer after.
The utility model content
The purpose of present technique provides a kind of solid wood veneer overlay intermediate plate, and the thick china surface smoothness height that makes after this solid wood veneer overlay intermediate plate hot pressing, ring crack and knot cracking is few around the knot.
This solid wood veneer overlay intermediate plate, comprise base material, paste the solid wood veneer at substrate surface, the two ends of solid wood veneer paste at substrate surface, between the two ends of the solid wood veneer that pastes mutually with base material, it is arched part, the length of this arched part is the 1/3-1/4 of length between the solid wood veneer two ends, and the maximum height of arched part is the 0.5%-1% of length between the solid wood veneer two ends; Described solid wood veneer moisture content 〉=40%; Seamless butt joint between the adjacent two solid wood veneers that paste.
The beneficial effect of this veneer intermediate plate: moisture content pasted at substrate surface at the undried solid wood veneer more than 40% formed the veneer intermediate plate.Again the veneer intermediate plate is carried out hot pressing and namely get thick china.With the arch upward height of length 1/3-1/4 of solid wood veneer, to replenish its amount of contraction that in postorder hot-pressing drying process, produces, there are not ring crack and knot cracking phenomena around the surfacing no wrinkle that pastes the solid wood veneer of the thick china of finally making, the knot on the solid wood veneer.Arching upward, it is too high highly to be difficult for, and too high meeting surpasses its amount of contraction in follow-up hot-pressing drying process, and the surface also can out-of-flatness.Arching upward, it is low highly to be difficult for, and crosses to hang down to be less than its amount of contraction in follow-up hot-pressing drying process, also causes cracking easily.
Above-mentioned solid wood veneer overlay intermediate plate, arched part is positioned at the centre position of solid wood veneer length direction, and the highest point of arched part is positioned at the length direction centre position of arched part.
Above-mentioned solid wood veneer overlay intermediate plate, base material is medium density fibre board (MDF) or glued board.
Present technique also provides a kind of flatness that can increase veneer, reduces the generation of ring crack and knot cracking phenomena around the knot, the wet combining method of the solid wood veneer that reduces production costs simultaneously.
The wet combining method of this solid wood veneer comprises the steps: to be coated with the agent of thermosetting gluing at the substrate surface of pre-sturdy wooden veneer; The two ends of solid wood veneer are pasted at substrate surface, between the two ends of the solid wood veneer that pastes mutually with base material, it is arched part, the length of this arched part is the 1/3-1/4 of length between the solid wood veneer two ends, and the maximum height of arched part is the 0.5%-1% of length between the solid wood veneer two ends; Moisture content 〉=40% of the solid wood veneer before pasting; Seamless butt joint between the adjacent two solid wood veneers that paste, hot-forming in hot press the base material that is covered with the solid wood veneer (solid wood veneer overlay intermediate plate) then.
The beneficial effect of this wet combining method: present technique is the wet combining technology of solid wood veneer, namely at the solid wood veneer before undried, moisture content carries out the solid wood veneer overlay 40% when above.When the solid wood veneer is attached to substrate surface, with the solid wood veneer veneer length 1/3-1/4 that arches upward, the maximum height of arched part is the 0.5%-1% of length between the solid wood veneer two ends, to replenish its amount of contraction that in the hot-pressing drying process, produces, there are not ring crack and knot cracking phenomena around the surfacing no wrinkle that pastes the solid wood veneer of the thick china of finally making, the knot on the solid wood veneer.Arching upward, it is too high highly to be difficult for, and too high meeting surpasses its amount of contraction in follow-up hot-pressing drying process, and the surface also can out-of-flatness.Arching upward, it is low highly to be difficult for, and crosses to hang down to be less than its amount of contraction in follow-up hot-pressing drying process, also causes cracking easily.
The wet combining method of above-mentioned solid wood veneer, arched part is positioned at the centre position of solid wood veneer length direction, and the highest point of arched part is positioned at the length direction centre position of arched part.
The wet combining method of above-mentioned solid wood veneer, three hot pressing before and after the hot pressing time-division after each hot pressing, is unloaded pressure and is depressed into zero, keeps 30-60 second but heating platen does not break away from veneer.After each hot pressing, pressure is unloaded be depressed into zero, but heating platen does not break away from veneer, purpose so that the moisture in the solid wood veneer can distribute more fully.The selection of hot pressing time temperature, pressure and adhesive is relevant.Preferred each hot pressing time is 1-2min, and pressure is 1-2.5MPa, and temperature is 120-130 ℃, and back pressure once is greater than previous pressure.
The wet combining method of above-mentioned solid wood veneer, base material are medium density fibre board (MDF) or glued board.
Description of drawings
Fig. 1 is solid wood veneer overlay intermediate plate schematic diagram.
The specific embodiment
Below in conjunction with the drawings and specific embodiments present technique is described further.
Embodiment 1: the preparation of solid wood thin wood faced plate
A, preparation solid wood veneer overlay intermediate plate: referring to Fig. 1, be coated with urea-formaldehyde resin adhesive on medium density fibre board (MDF) (base material) 2 surfaces of pre-sturdy wooden veneer 1; The two ends 11,12 of solid wood veneer are pasted on the medium density fibre board (MDF) surface, between the two ends of the solid wood veneer that pastes mutually with base material, it is arched part 13, the maximum height T of this arched part is length (length between the two ends when the solid wood veneer is set level between the solid wood veneer two ends, T is less because of maximum height, length approximates the L that marks among the figure between the two ends when solid wood veneer is set level) about 0.8%, the length of arched part (T is less because of maximum height, and the length of arched part approximates the M that marks among the figure) be between the solid wood veneer two ends length 1/3; Arched part is positioned at the centre position of solid wood veneer length direction.The highest point of this arched part is positioned at the arched part centre position of solid wood veneer length direction.Seamless butt joint between the adjacent two solid wood veneers 1 that paste.Generally speaking, solid wood veneer length L=30cm, T=2.4mm, M=10cm.
B, hot-forming: hot-forming in hot press the veneer intermediate plate.Hot pressing divides 3 sections hot pressing, phase I pressure is 1.5MPa, hot pressing temperature is 120 ℃, hot pressing time is 2min, reach release behind the phase I hot pressing time, heating platen does not break away from top layer pine veneer, so that the aqueous dispersion in the pine veneer veneer sends out, urea-formaldehyde resin adhesive obtains precuring simultaneously, keeps entering second stage hot pressing after 60 seconds; Second stage hot pressing pressure 2.0Mpa, 120 ℃ of hot pressing temperatures, hot pressing time is 1min, reach release behind the second stage hot pressing time, heating platen does not break away from top layer pine veneer, kept 30 seconds, and so that the moisture in the veneer veneer further distributes, and urea-formaldehyde resin adhesive was further solidified; Phase III hot pressing pressure 2.5MPa, 120 ℃ of hot pressing temperatures, hot pressing time 2min.Reach release behind the hot pressing time, heating platen breaks away from top layer pine veneer, and wet combining technology is finished.The thick china surfacing that makes, no cracking phenomena.
Among this embodiment 1, the solid wood veneer is that pine is carried out the veneer (pine rotary-cut veneer) that rotary-cut is made, and thickness is 0.3-0.4mm.The moisture content 100% of the pine rotary-cut veneer before pasting.
Embodiment 2: the preparation of solid wood thin wood faced plate
A, preparation solid wood veneer overlay intermediate plate: referring to Fig. 1, behind glued board (base material) 2 sanding surfaces of pre-sturdy wooden veneer 1, be coated with phenolic resin adhesive; The two ends 11,12 of solid wood veneer are pasted at the glued board substrate surface, between the two ends of the solid wood veneer that pastes mutually with base material, it is arched part 13, the maximum height T of this arched part is length (length between the two ends when the solid wood veneer is set level between the solid wood veneer two ends, T is less because of maximum height, length approximates the L that marks among the figure between the two ends when solid wood veneer is set level) about 0.6%, the length of arched part (T is less because of maximum height, and the length of arched part approximates the M that marks among the figure) be between the solid wood veneer two ends length 1/4; Arched part is positioned at the centre position of solid wood veneer length direction.The highest point of this arched part is positioned at the arched part centre position of solid wood veneer length direction.The texture of solid wood veneer and the mutual vertical interlaced of substrate surface texture that pastes or parallelly all can.Seamless butt joint between the adjacent two solid wood veneers 1 that paste.Generally speaking, solid wood veneer length L=30cm, T=1.8mm, M=7.5cm.
B, hot-forming: hot-forming in hot press the veneer intermediate plate.Hot pressing is divided into 3 sections hot pressing, phase I pressure is 1.0MPa, hot pressing temperature is 125 ℃, hot pressing time is 1min, reach release behind the phase I hot pressing time, heating platen does not break away from the husky Billy's veneer in top layer, so that the aqueous dispersion in husky Billy's veneer veneer sends out, phenolic resin adhesive obtains precuring simultaneously, keeps entering second stage hot pressing after 60 seconds; Second stage hot pressing pressure 1.5Mpa, 130 ℃ of hot pressing temperatures, hot pressing time is 1min, reach release behind the second stage hot pressing time, heating platen does not break away from the husky Billy's veneer in top layer, kept 30 seconds, and so that the moisture in the veneer veneer further distributes, and phenolic resin adhesive was further solidified; Phase III hot pressing pressure 2.0MPa, 130 ℃ of hot pressing temperatures, hot pressing time 2min.Reach release behind the hot pressing time, heating platen breaks away from the husky Billy's veneer in top layer, and wet combining technology is finished.The thick china surfacing that makes, no cracking phenomena.
Among this embodiment 2, the solid wood veneer is that husky Billy is carried out the veneer (husky Billy's slicing veneer) that slicing is made, and thickness is 0.4-0.5mm.The moisture content 50% of the husky Billy's slicing veneer before pasting.
Present technique is owing to adopted solid wood veneer wet combining technology, be base material with glued board or fiberboard, the precious natural veneer of top layer veneer, can save big footpath level precious timber, the phenomenon along knot ring crack and knot cracking that not only can avoid traditional handicraft in the veneer process, to produce, and can guarantee that veneer is smooth, technology is convenient to operation simultaneously, has reduced production cost.
Claims (3)
1. solid wood veneer overlay intermediate plate, comprise base material, paste the solid wood veneer at substrate surface, it is characterized in that: the two ends of solid wood veneer paste at substrate surface, between the two ends of the solid wood veneer that pastes mutually with base material, it is arched part, the length of this arched part is the 1/3-1/4 of length between the solid wood veneer two ends, and the maximum height of arched part is the 0.5%-1% of length between the solid wood veneer two ends; Described solid wood veneer moisture content 〉=40%; Seamless butt joint between the adjacent two solid wood veneers that paste.
2. solid wood veneer overlay intermediate plate as claimed in claim 1, it is characterized in that: arched part is positioned at the centre position of solid wood veneer length direction, and the highest point of arched part is positioned at the length direction centre position of arched part.
3. solid wood veneer overlay intermediate plate as claimed in claim 1, it is characterized in that: base material is medium density fibre board (MDF) or glued board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182866 CN203156874U (en) | 2013-04-12 | 2013-04-12 | Laminated intermediate board with solid veneers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182866 CN203156874U (en) | 2013-04-12 | 2013-04-12 | Laminated intermediate board with solid veneers |
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| CN203156874U true CN203156874U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320182866 Expired - Fee Related CN203156874U (en) | 2013-04-12 | 2013-04-12 | Laminated intermediate board with solid veneers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171002A (en) * | 2013-04-12 | 2013-06-26 | 山东立晨集团有限公司 | Solid wood veneer wet combining method and veneering intermediate plate |
| CN107009448A (en) * | 2017-05-25 | 2017-08-04 | 山东立晨集团有限公司 | A kind of environment-friendly solid wood veneer overlay intermediate plate and its processing method |
-
2013
- 2013-04-12 CN CN 201320182866 patent/CN203156874U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171002A (en) * | 2013-04-12 | 2013-06-26 | 山东立晨集团有限公司 | Solid wood veneer wet combining method and veneering intermediate plate |
| CN107009448A (en) * | 2017-05-25 | 2017-08-04 | 山东立晨集团有限公司 | A kind of environment-friendly solid wood veneer overlay intermediate plate and its processing method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20190412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |