CN104290150A - Plywood or synclastic laminated material leveling method - Google Patents
Plywood or synclastic laminated material leveling method Download PDFInfo
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- CN104290150A CN104290150A CN201410503963.3A CN201410503963A CN104290150A CN 104290150 A CN104290150 A CN 104290150A CN 201410503963 A CN201410503963 A CN 201410503963A CN 104290150 A CN104290150 A CN 104290150A
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- China
- Prior art keywords
- press
- hot pressing
- laminated material
- humidification
- pressing
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
A plywood or synclastic laminated material leveling method includes the steps that in the gluing pressure process of converting hot pressing of a hot press to cold pressing of a cold press, blanks are humidified in a spraying or roller coating mode when converted to the cold press from the hot press, and a humidifying medium is steam or water or aqueous solutions with modifying agents. Or, when balance processing and bending deformation rectification processing are carried out on boards after the gluing pressure process is finished, the boards are humidified firstly in a spraying or soaking or roller coating mode, then hot pressing is carried out on the boards, and a humidifying medium is steam or water or aqueous solutions with modifying agents. The moisture content of products can be adjusted rapidly, internal stress is reduced, and products with good levelness are obtained.
Description
[technical field]
The present invention relates to Wood-based Panel Production technology field, be specifically related to the smooth processing method of glued board or laminated material in the same way.
[background technology]
If the plate products such as glued board or in the same way laminated material exist internal stress, there will be the metabolies such as bending or distortion.According to the gluing pressure craft of hot pressing mode, hot pressing temperature is higher, and hot pressing time is longer, and the internal stress of its product is larger, i.e. the internal stress of product and hot pressing temperature and time normally proportional relation.Especially thermoplastic film is used to make the multi-layer sheet product of adhesive, because the hot setting adhesive solidification temperature of fusion temperature usually than traditional of thermoplastic adhesive is high, in hot pressing, fusion temperature needed for thermoplastic adhesive is reached in order to make plate core temperature within a short period of time, hot pressing temperature adopts 140 DEG C usually--and 180 DEG C or higher, carry out the glued board suppressed and laminated material product in the same way at this temperature, inner exist larger internal stress, moisture content is on the low side (normally 6%-9%), therefore, this series products is out of shape larger after displaying moisture absorption, bending or twisted phenomena is more serious, product later stage Balance Treatment difficulty strengthens, so that affect the normal use of product.In addition, health or balance kiln balance mode are displayed in the many employings of wood-based plate later stage Balance Treatment, and the processing time is longer, and effect is not satisfactory.
In view of this, the present inventor furthers investigate for the defect of prior art, then has this case to produce.
[summary of the invention]
One of technical problem to be solved by this invention is to provide the smooth processing method of a kind of glued board in glue laminated operation or laminated material in the same way, under the prerequisite not affecting production efficiency, Quick high product moisture content and reduction internal stress, obtain the good product of flatness.
Two of technical problem to be solved by this invention is to provide the smooth processing method of a kind of glued board after glue laminated operation or laminated material in the same way, and have the advantages that the time is short, flatness is good, economic benefit is fairly obvious.
The present invention adopts following technical scheme one of to solve the problems of the technologies described above:
The smooth processing method of glued board or in the same way laminated material, is transformed in the glue laminated operation that cold press colds pressing, adds wet process when blanket is transformed into cold press from hot press to blanket after first hot press hot pressing.Under the thermodynamic activity of temperature more than the hot pressing of pressure and blanket, the moisture of humidification can penetrate into sheet material inside fast, equably, reaches Quick high product moisture content, reduces the effect of internal stress, obtain the good product of flatness.
Further, add wet process described in refer to: humidification method is spray or roller coat, and adding humid medium is steam, water or the aqueous solution containing modifier.
The present invention adopt following technical scheme to solve the problems of the technologies described above two:
The smooth processing method of glued board or in the same way laminated material, (note: not specific glue laminated mode after product glue laminated operation, as hot pressing, to cold pressing or hot pressing+cold pressing), when process is corrected in board balance process and flexural deformation, first wet process is added to sheet material, after carry out hot pressing, the smooth processing time can be shortened, humidification moisture during sheet material hot pressing on its surface can penetrate into intralamellar part fast, equably under pressure and thermodynamic activity, reach the effect of quick adjustment moisture content and adjustment internal stress, obtain the good product of flatness.
Further, add wet process described in refer to: humidification method is spray, soaks or roller coat, and adding humid medium is steam, water or the aqueous solution containing modifier.
The invention has the advantages that: 1, in glue laminated operation, be transformed in the glue laminated operation that cold press colds pressing after first hot press hot pressing, when blanket is transformed into cold press from hot press, wet process is added to blanket, can according to seeds, the veneer number of plies, moisture content, deformation extent, the whether factor such as the backing plate adjustment humidification water yield and add wetted surface (single or double), after adding wet process, in the stage of colding pressing, humidification moisture on blanket surface can be quick under the thermodynamic activity of temperature more than pressure and blanket hot pressing, penetrate into sheet material inside equably, reach Quick high product moisture content, reduce the effect of sheet material internal stress, obtain the good product of flatness.2, (note: not specific glue laminated mode after product glue laminated operation, as hot pressing, to cold pressing or hot pressing+cold pressing), if need to carry out Balance Treatment or flexural deformation correction process to sheet material, wet process can be added to sheet material, after carry out hot pressing, humidification moisture during sheet material hot pressing on its surface can penetrate into sheet material inside fast, equably under pressure and thermodynamic activity, reaches the effect of quick adjustment product moisture content and adjustment sheet material internal stress, obtains the good product of flatness.Adjust the humidification water yield according to seeds, the veneer number of plies, moisture content, blanket deformation extent and add wetted surface (single or double), the sheet material hot pressing after humidification is delivered to press and is carried out heating pressurization, and heating-up temperature should below 100 DEG C; For the product of thermoplastic adhesive, hot pressing heating-up temperature should lower than its fusion temperature; Deformation of products correction is processed, different humidifications, hot pressing mode can also be selected according to sheet deformation direction and degree: one side humidification or two-sided humidification, single-side heating or Double-side Heating.Glued board and in the same way laminated material are adopted and are carried out later stage Balance Treatment in this way or correct deformation process, and the processing mode balanced than traditional water spray humidification+balance kiln has time short, the good feature of flatness, and economic benefit is fairly obvious.
[accompanying drawing explanation]
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is that the present invention sprays mode humidification schematic diagram.
Fig. 2 is that the A-A of Fig. 1 is to schematic diagram.
Fig. 3 is roll coating model humidification schematic diagram of the present invention.
[detailed description of the invention]
First embodiment:
For the glued board and the laminated material product in the same way that use thermoplastic adhesive, when the gluing pressure craft being transformed into cold press after the first hot press hot pressing of employing and colding pressing, method of the present invention can be interted and to carry out in above-mentioned glue laminated operation.
With thermoplastic adhesive produce glued board and in the same way laminated material time, its gluing procedures is divided into two stages usually: (1) hot press period, improve temperature make thermoplastic adhesive melt the gluing function of rear generation; (2) cold pressing the stage, blanket cools under maintenance certain process stage, thermoplastic adhesive is lowered the temperature and solidifies and glued together by the materials such as veneer.
If the pressing mode that hot press period and stage of colding pressing independently carry out respectively on hot press and on cold press, namely the gluing pressure craft that cold press is colded pressing is transformed into after first hot press hot pressing, method so of the present invention installs a damping device additional exactly between hot press and cold press, humidification method is spray or roller coat, as depicted in figs. 1 and 2, humidification method is spray, between hot press 1 and cold press 2, install spray equipment 3 additional spray, when blanket after hot pressing moves to cold press 2 process from hot press 1, humidification is carried out on upper and lower two surfaces of this spray equipment 3 pairs of blankets.Adding humid medium is steam, water or the aqueous solution etc. containing modifier.Adjust the humidification water yield according to seeds, the veneer number of plies, water cut value, blanket deformation extent, whether backing plate etc. and add wetted surface (single or double).In the stage of colding pressing, the humidification moisture on blanket surface can penetrate into sheet material inside fast, equably under the thermodynamic activity of temperature more than the hot pressing of pressure and blanket, reaches Quick high product moisture content, reduces the effect of internal stress, obtain the good product of flatness.
Method of the present invention is easy, as long as add the damping device of a spray or roller coat between hot press and cold press, do not affecting Quick high product moisture content and reduction internal stress under production efficiency, economic benefit is fairly obvious.
Second embodiment:
The method of the present embodiment can be used for sheet material later stage Balance Treatment and rectification of distortion process.
For the glued board requiring flatness higher and laminated material product in the same way, need to carry out later stage Balance Treatment to sheet material, to reduce internal stress and the distortion of product, also have, bending or the distortion correction for sheet material after point saw, bending as corrected multi-layer composite floor blanket, the way of humidification and heating pressurization can be adopted to reduce sheet material internal stress and distortion.Humidification moisture during sheet material hot pressing on its surface can penetrate into sheet material inside fast, equably under pressure and thermodynamic activity, reaches the effect of quick adjustment moisture content and adjustment internal stress, obtains the good product of flatness.Specific practice is: to needing plate surface to be processed to carry out humidification, humidification method can be spray, soak and roller coat, and adding humid medium is steam, water or the aqueous solution etc. containing modifier.As shown in Figure 3, humidification method is roller coat, and humidification is carried out on upper and lower two surfaces of roller coat damping device 4 pairs of sheet materials, and adding humid medium 5 is water.Adjust the humidification water yield according to seeds, the veneer number of plies, moisture content, blanket deformation extent and add wetted surface (single or double), the sheet material after humidification is delivered to press and is carried out heating pressurization, and heating-up temperature should below 100 DEG C; For the product of thermoplastic adhesive, heating-up temperature should lower than its fusion temperature; Deformation of products correction is processed, different humidifications, hot pressing mode can also be selected according to sheet deformation direction and degree: one side humidification or two-sided humidification, single-side heating or Double-side Heating.Glued board and in the same way laminated material are adopted and are carried out later stage balance in this way or correct deformation process, and the processing mode balanced than traditional water spray humidification+balance kiln has time short, the good feature of flatness, and economic benefit is fairly obvious.
The foregoing is only better enforcement use-case of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the smooth processing method of glued board or laminated material in the same way, is characterized in that: be transformed into after first hot press hot pressing in the glue laminated operation that cold press colds pressing, add wet process when blanket is transformed into cold press from hot press to blanket.
2. the smooth processing method of glued board as claimed in claim 1 or laminated material in the same way, is characterized in that: described in add wet process and refer to: humidification method is spray or roller coat, and adding humid medium is steam, water or the aqueous solution containing modifier.
3. the smooth processing method of glued board or laminated material in the same way, is characterized in that: after product glue laminated operation, when process is corrected in board balance process and flexural deformation, first adds wet process to sheet material, after carry out hot pressing.
4. the smooth processing method of glued board as claimed in claim 3 or laminated material in the same way, is characterized in that: described in add wet process and refer to: humidification method is spray, soaks or roller coat, and adding humid medium is steam, water or the aqueous solution containing modifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503963.3A CN104290150A (en) | 2014-09-26 | 2014-09-26 | Plywood or synclastic laminated material leveling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503963.3A CN104290150A (en) | 2014-09-26 | 2014-09-26 | Plywood or synclastic laminated material leveling method |
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| Publication Number | Publication Date |
|---|---|
| CN104290150A true CN104290150A (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410503963.3A Pending CN104290150A (en) | 2014-09-26 | 2014-09-26 | Plywood or synclastic laminated material leveling method |
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| CN (1) | CN104290150A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116141445A (en) * | 2023-03-09 | 2023-05-23 | 江苏福庆家居有限公司 | Artificial board warping trimming process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0289601A (en) * | 1988-09-27 | 1990-03-29 | Sumitomo Ringyo Kk | Manufacture of composite wooden material |
| US5247975A (en) * | 1989-12-25 | 1993-09-28 | Hisaka Works Limited | Wood treating method and apparatus |
| JPH09174506A (en) * | 1995-12-25 | 1997-07-08 | Matsushita Electric Works Ltd | Manufacture of wooden building material |
| CN1672884A (en) * | 2005-04-05 | 2005-09-28 | 福建农林大学 | Production process of long material in composite bamboo-timber structure |
| CN101491907A (en) * | 2009-02-18 | 2009-07-29 | 广东盈然木业有限公司 | Board balance health-preserving chamber and board health-preserving method |
| CN101733813A (en) * | 2009-12-02 | 2010-06-16 | 中国林业科学研究院木材工业研究所 | Production method for transferring hot press and cold press of artificial boards and equipment for realizing method |
| CN102514052A (en) * | 2011-12-26 | 2012-06-27 | 王佐生 | Veneer special for wood blade of classical ceiling fan and preparation method for plywood |
| CN103433984A (en) * | 2013-08-14 | 2013-12-11 | 广西南宁绿园北林木业有限公司 | Producing method of heat-resisting full eucalyptus laminated veneer |
-
2014
- 2014-09-26 CN CN201410503963.3A patent/CN104290150A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0289601A (en) * | 1988-09-27 | 1990-03-29 | Sumitomo Ringyo Kk | Manufacture of composite wooden material |
| US5247975A (en) * | 1989-12-25 | 1993-09-28 | Hisaka Works Limited | Wood treating method and apparatus |
| JPH09174506A (en) * | 1995-12-25 | 1997-07-08 | Matsushita Electric Works Ltd | Manufacture of wooden building material |
| CN1672884A (en) * | 2005-04-05 | 2005-09-28 | 福建农林大学 | Production process of long material in composite bamboo-timber structure |
| CN101491907A (en) * | 2009-02-18 | 2009-07-29 | 广东盈然木业有限公司 | Board balance health-preserving chamber and board health-preserving method |
| CN101733813A (en) * | 2009-12-02 | 2010-06-16 | 中国林业科学研究院木材工业研究所 | Production method for transferring hot press and cold press of artificial boards and equipment for realizing method |
| CN102514052A (en) * | 2011-12-26 | 2012-06-27 | 王佐生 | Veneer special for wood blade of classical ceiling fan and preparation method for plywood |
| CN103433984A (en) * | 2013-08-14 | 2013-12-11 | 广西南宁绿园北林木业有限公司 | Producing method of heat-resisting full eucalyptus laminated veneer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116141445A (en) * | 2023-03-09 | 2023-05-23 | 江苏福庆家居有限公司 | Artificial board warping trimming process |
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Application publication date: 20150121 |
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