CN100408288C - Hot pressing technique for raising stability of composite plate made from solid wood - Google Patents
Hot pressing technique for raising stability of composite plate made from solid wood Download PDFInfo
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- CN100408288C CN100408288C CNB2006100849911A CN200610084991A CN100408288C CN 100408288 C CN100408288 C CN 100408288C CN B2006100849911 A CNB2006100849911 A CN B2006100849911A CN 200610084991 A CN200610084991 A CN 200610084991A CN 100408288 C CN100408288 C CN 100408288C
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Abstract
A hot pressing technology for improving the stability of composite wood board A high-strength antiwear composite wood-plastics board is composed of an artificial core board with two adhesive layers on its both surface, and two veneers adhered respectively onto said two adhesive layers. Said veneer is chosen from high-density plywood, polyhydroamine solution immersed paperboard, and PCC plate. Said adhesive is chosen from MVF adhesive, high-adhesion emulsion adhesive and universal adhesive. Providing high-density high-quality ply as surface layer, providing artificial board as core layer (or substrate for two-layer board), providing low-density cheap ply as substrate, drying, and hot pressing by controlling the temp of upper and lower pressing plates or the temp difference between them.
Description
Technical field
The present invention relates to the heat pressing process in a kind of production process of composite plate made from solid wood, is the improvement of the heat pressing process of favourable raising sheet material stability.
Background technology
Along with the fast development of building industry and improving constantly of people's quality of life, the dalle in house, the selection on floor, taken place repeatedly to change: from the ceramic tile floor tile to the wallpaper plastic cement, at present popular have a three-decker, be that the surface layer plate is that high density high-quality wood (bamboo) plate, core substrate are wood-based plate, the bottom plate is the composite plate made from solid wood of the cheap plate of low-density, also has two-layer structure, be high density high-quality face side laminate and artificial board substrate (being the bottom plate), to have a top layer luxurious attractive in appearance because of them, the whole firm inexpensive advantage of plate.But the sheet material of this structure is multifactorial asymmetric because of material, density, thickness etc., must cause the poor stability of whole plate, and easily buckling deformation becomes the hard nut to crack in the production.CN2250999Y proposes a kind of floor and curved scheme, sets about from changing the floor shape, reduce wood fiber length and prevent floor deformation, but therefore this scheme manys loss 1/3 timber than conventional method.What CN1325791A proposed makes bottom with bamboo plywood, and solid wood plate or real bamboo chip (plate) are made the composite floor board of panel, and the uniqueness because of its raw material mix truly has higher stability.But above-mentioned two schemes do not belong to the high-grade surface layer plate of at present popular three-decker, the wood-based plate sandwich layer, and the solid wood composite board of low-grade base plate does not belong to the high-grade surface layer plate of two-layer structure and artificial board substrate's solid wood composite board yet.
In a word, in the production of the present composite plate made from solid wood of latest fashion, how to overcome buckling deformation, improve the problem of sheet material stability, do not retrieve related data as yet and look for and to gratifying material object.
Summary of the invention
The buckling deformation problem of the composite plate made from solid wood that the system not of the present invention is directed in the prior art as yet relates to is set about from the link of improving heat pressing process, proposes to improve the technical scheme of solid wood board stability.
Concrete scheme of the present invention is: to the solid wood composite board of three-decker, make the surface layer plate with high density high-quality plate, wood-based plate is made core substrate, the cheap plate of low-density is made base plate, and the moisture content control of each layer is: surface layer plate 8-17%, core substrate 5-15%, bottom plate 10-20%; To the solid wood composite board of two-layer structure, with high density high-quality plate make the surface layer plate, wood-based plate is made base material, the moisture content of two-ply all is controlled at 8-15%, adopt organic adhesion agent, carry out in general hot press, applying glue, pressure, time control operation routinely is characterized in that:
The heating platen temperature control of a hot pressing combined shaping with the sequence stacking form is: to three-decker, the surface layer plate touch the lower heating platen of temperature, and the bottom plate touch the higher heating platen of temperature and carries out hot pressing; Surface layer plate to two-layer structure touch the lower heating platen of temperature, and base material touch the higher heating platen of temperature and carries out hot pressing, the two heating platen temperature difference＞20 ℃.
The sequence stacking form of secondary hot pressing combined shaping is: a pair of surface layer plate and core substrate combination up and down earlier, then the two sides laminate respectively touch heating platen outside, two core substrate are leaned on mutually, carry out the gummed of surface layer plate and core substrate, the back is a pair of surface layer plate, core substrate, the combination of bottom plate up and down, and surface layer plate wherein and core substrate are the preceding working procedure hot-press gluings, then two bottom plates outside, respectively touch heating platen, the two sides laminate leans on mutually, carries out the hot-press gluing of bottom plate and core substrate.
The specific embodiment
This composite plate made from solid wood, its surface layer plate is highdensity high-quality wood (bamboo) plate, as: the Apollo plate, the redwood plate, the teak plate, bamboo offset plate etc., as three-decker, say that generally thickness surpasses low density bottom plate, thus buckling deformation by the end to the face warpage, no matter once-combined shaping hot pressing still is the hot pressing of secondary combined shaping, for core substrate, surface layer and bottom plate all once directly touched heating platen, and it is big to be heated, and the water evaporates amount is big, and the bottom plate is lower because of density, under hot pressing, discharge moisture faster and more, Gu this, before hot pressing, improve bottom plate moisture content some more, the surface layer plate secondly, core substrate is minimum, only in this way, moisture content after three's layer heap hot pressing dehydration has prevented the moisture expantion distortion near the moisture content of sheet material nature.As two-layer structure, differences such as bilevel material, thickness also can produce distortion, and before the hot pressing, two layers moisture content is controlled at same level.
With once-combined forming mode, the temperature of the last lower hot pressing board of same lattice in the hot press should be carried out the temperature difference and regulate, can carry out air-cooled or water-cooled handles to the pipeline that send thermal medium of a heating platen wherein, the temperature difference＞20 ℃.Concrete temperature difference numerical value need be taken all factors into consideration because of relevant with the thickness of plate, material, density, glue kind etc.No matter three layers or two-layer structure, all be that the surface layer plate is touched the lower heating platen of temperature, three-decker, base plate is touched the higher heating platen of temperature, two-layer structure, base material touch the higher heating platen of temperature, be that the degree of expanding with heat and contract with cold that density is big is little greater than density because under the uniform temp condition, the surface layer plate that density is big touch the lower heating platen of relative temperature, to pin down its degree of expanding with heat and contract with cold, the composite plate made from solid wood distortion that helps in nature is little.
Say that generally core substrate is because of selecting wood-based plate for use, more stable as performances such as finger joint lumber, integrated timber, laminated timber, wood shavings material, density board, wood wool board, reorganization wood, be out of shape little, directly do not touch heating platen during hot pressing, adopt (two-layer structure do not adopt secondary compound) of secondary combined shaping mode, do not need the last lower hot pressing board of same lattice is regulated the temperature difference, get final product with conventional temperature control.When the secondary combined shaping, be noted that the notion of " a pair of " especially, refer to secondary hot pressing and finish, same lattice output be two composite plate made from solid wood.Said " combination of a pair of up and down surface layer plate and core substrate ", be meant and from top to bottom be followed successively by surface layer plate, core substrate, core substrate, surface layer plate, the implication of " combination of a pair of up and down surface layer plate, core substrate, laminate " is meant that ordering from top to bottom is: bottom plate, core substrate, surface layer plate, surface layer plate, core substrate, bottom plate.
Except that the upper and lower heating platen of once-combined shaping need to the same lattice of hot press carries out the temperature difference control, unlike material in the heat pressing process, different densities, thickness, glue kind, processing season etc., how to grasp pressure, time, temperature, resin added of hot pressing etc., and other concerned process steps, technological parameter before and after the hot pressing etc., with reference to conventional, narration no longer one by one.
The present invention is poor from each layer moisture content of control before the hot pressing, the temperature of the last lower hot pressing board of the same lattice of press poor in once-forming during hot pressing, unique sequence stacking form three aspects in the secondary forming set about heat pressing process is improved, and the stability of composite plate made from solid wood of producing is significantly improved.Effectively prevented to expand with heat and contract with cold, imbibition causes the buckling deformation of sheet material.
Claims (1)
1. heat pressing process that improves stability of composite plate made from solid wood, solid wood composite board to three-decker, make the surface layer plate with the high-quality plate, wood-based plate is made core substrate, cheap plate is made base plate, and the moisture content control of each layer is: panel 8-17%, core substrate 5-15%, bottom plate 10-20%; To the solid wood composite board of two-layer structure, with the high-quality plate make the surface layer plate, wood-based plate is made base material, two-layer moisture content all is controlled at 8-15%, adopts organic adhesion agent, carries out in general hot press, applying glue, pressure, time control operation routinely is characterized in that:
The heating platen temperature control of (1) hot pressing combined shaping with the sequence stacking form is: to three-decker, the surface layer plate touch the lower heating platen of temperature, and the bottom plate touch the higher heating platen of temperature and carries out hot pressing; Surface layer plate to two-layer structure touch the lower heating platen of temperature, and base material touch the higher heating platen of temperature and carries out hot pressing, the two heating platen temperature difference＞20 ℃;
(2) the sequence stacking form of secondary hot pressing combined shaping is: a pair of surface layer plate and core substrate combination up and down earlier, then the two sides laminate respectively touch heating platen outside, two sandwich layers, base material leans on mutually, carries out the gummed of surface layer plate and core substrate, the back is a pair of surface layer plate, core substrate, the combination of bottom plate up and down, surface layer plate wherein and core substrate are the preceding working procedure hot-press gluings, and then two bottom plates respectively touch heating platen outside, the two sides laminate leans on mutually, carries out the hot-press gluing of bottom plate and core substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100849911A CN100408288C (en) | 2006-05-29 | 2006-05-29 | Hot pressing technique for raising stability of composite plate made from solid wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100849911A CN100408288C (en) | 2006-05-29 | 2006-05-29 | Hot pressing technique for raising stability of composite plate made from solid wood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1958257A CN1958257A (en) | 2007-05-09 |
| CN100408288C true CN100408288C (en) | 2008-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100849911A Expired - Fee Related CN100408288C (en) | 2006-05-29 | 2006-05-29 | Hot pressing technique for raising stability of composite plate made from solid wood |
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| CN (1) | CN100408288C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811315B (en) * | 2009-02-19 | 2011-10-12 | 徐六峰 | Method for manufacturing solid wood composite decorating board |
| CN102602112B (en) * | 2012-03-06 | 2014-07-09 | 浙江农林大学 | Method for improving stability of a die-molded composite door panel |
| CN108673689A (en) * | 2018-03-29 | 2018-10-19 | 华南农业大学 | A kind of unilateral side surface layer compressed wood and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250999Y (en) * | 1996-08-02 | 1997-04-02 | 王仁忠 | Parquet floor |
| DE19852033A1 (en) * | 1998-11-11 | 2000-05-18 | Fraunhofer Ges Forschung | Compound board material has a carrier of lignin with natural fiber reinforcement to be bonded to a decorative layer by heat and pressure |
| CN2409034Y (en) * | 2000-01-21 | 2000-12-06 | 王志勇 | Wooden floor |
| CN1325791A (en) * | 2000-05-28 | 2001-12-12 | 王崟 | Composite board and composite floor board |
| CN2516643Y (en) * | 2002-01-18 | 2002-10-16 | 吉林森工集团松江河林业有限公司 | Wood compound floor with convoluted and sliced veneer |
| DE10224194B3 (en) * | 2002-05-31 | 2004-04-15 | Winter, Elisabeth | Production method for parquet flooring boards uses two adhesives applied between board layers, the second adhesive being quick-setting to connect layers, and with second compression process for stacked boards |
-
2006
- 2006-05-29 CN CNB2006100849911A patent/CN100408288C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250999Y (en) * | 1996-08-02 | 1997-04-02 | 王仁忠 | Parquet floor |
| DE19852033A1 (en) * | 1998-11-11 | 2000-05-18 | Fraunhofer Ges Forschung | Compound board material has a carrier of lignin with natural fiber reinforcement to be bonded to a decorative layer by heat and pressure |
| CN2409034Y (en) * | 2000-01-21 | 2000-12-06 | 王志勇 | Wooden floor |
| CN1325791A (en) * | 2000-05-28 | 2001-12-12 | 王崟 | Composite board and composite floor board |
| CN2516643Y (en) * | 2002-01-18 | 2002-10-16 | 吉林森工集团松江河林业有限公司 | Wood compound floor with convoluted and sliced veneer |
| DE10224194B3 (en) * | 2002-05-31 | 2004-04-15 | Winter, Elisabeth | Production method for parquet flooring boards uses two adhesives applied between board layers, the second adhesive being quick-setting to connect layers, and with second compression process for stacked boards |
Non-Patent Citations (6)
| Title |
|---|
| 三层实木复合地板背板含水率对其变形的影响. 莫银辉.木材工业，第18卷第2期. 2004 |
| 三层实木复合地板背板含水率对其变形的影响. 莫银辉.木材工业，第18卷第2期. 2004 * |
| 三层胶合实木地板弯曲变形成因及其预防办法. 朱宏锋.人造板通讯，第10期. 1998 |
| 三层胶合实木地板弯曲变形成因及其预防办法. 朱宏锋.人造板通讯，第10期. 1998 * |
| 改进帕利印茄实木复合地板质量的措施. 申利明，路则光，黄河浪，薛丽丹.木材工业，第20卷第1期. 2006 |
| 改进帕利印茄实木复合地板质量的措施. 申利明，路则光，黄河浪，薛丽丹.木材工业，第20卷第1期. 2006 * |
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| Publication number | Publication date |
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| CN1958257A (en) | 2007-05-09 |
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Assignee: Zhejiang Fitwell Wood Co., Ltd. Assignor: Qian Jun Contract fulfillment period: 2008.8.5 to 2018.8.4 Contract record no.: 2009330001433 Denomination of invention: Hot pressing technique for raising stability of composite plate made from solid wood Granted publication date: 20080806 License type: Exclusive license Record date: 20090617 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.5 TO 2018.8.4; CHANGE OF CONTRACT Name of requester: ZHEJ IANG FANGYUAN WOOD INDUSTRIAL CO., LTD. Effective date: 20090617 |
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