CN101306549A - Omposite floor continuous laminating techniqu - Google Patents
Omposite floor continuous laminating techniqu Download PDFInfo
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- CN101306549A CN101306549A CNA2008101233817A CN200810123381A CN101306549A CN 101306549 A CN101306549 A CN 101306549A CN A2008101233817 A CNA2008101233817 A CN A2008101233817A CN 200810123381 A CN200810123381 A CN 200810123381A CN 101306549 A CN101306549 A CN 101306549A
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Abstract
The invention relates to a composite floorboard (including double-layer, triple-layer and multi-layer floorboards) continuous laminating technology and the method. The novel technology and method comprise the following steps: uniformly applying water-base adhesive cured at a normal temperature, such as water-base isocyanate (EPI) glue, etc. on a cemented surface of the composite floorboard (a base material or a surface board), with application amount of glue in the range of 120-160g/m<2>; irradiating with far infrared (IR) rays to evaporate water in the water-base adhesive and activate adhesivity in the water-base adhesive; assembling the base material and the surface board; and subjecting to press gluing after the assembled base material and the surface board enter a continuous cold press, with unit pressure in the range of 1.2-1.6 MPa and cold pressing time in the range of 30s-1.5min. In the procedures of applying glue, IR irradiating, assembling, cold pressing and laminating, the base materials and the surface boards are subjected to the pass-type continuous feed process, and all procedures and equipment are connected into assembly line work. By adopting water-base adhesive without formaldehyde and cured at a normal temperature, such as water-base isocyanate (EPI) glue, the continuous laminating technology has the advantages of no free formaldehyde release, small floorboard deformation, short cold pressing period, realizable continuous automatic production, etc.
Description
(1) technical field
The present invention relates to a kind of omposite floor continuous laminating techniqu, belong to wooden composite floor manufacturing technology field.
(2) background technology
At present, solid wooden compound floor is divided into three layers, two-layer and sandwich construction, and three-layer wood composite flooring is made of dash board, central layer and backboard; Two-layer and multi-layer solid wood composite floor is made of dash board and base material, and wherein the base material of two-layer solid wooden compound floor mostly is the solid wood jigsaw, and the base material of multi-layer solid wood composite floor is a multi-plywood.Which kind of solid wooden compound floor no matter, the cementing layer compression technology is the key link during solid wooden compound floor is made, and directly affects product quality and production efficiency.At present, the gummed laminating method has: glutol such as urea-formaldehyde resin adhesive carry out periodicity hot pressing, periodic cold pressure is carried out in use isocyanates gluing agent (EPI) or reaction type hot-fusible glue (PUR) is colded pressing continuously with containing.
In periodicity hot pressing process, because the influence of hot pressing temperature, the moisture content in the solid wooden compound floor blank moves and evaporates, and the floor blank that hot pressing is good is easy to generate distortion and cracking, and has deficiencies such as pressing cycle length and free formaldehyde release.In the periodic cold pressure process, production capacity is low, also is difficult for realizing automated job.Reaction type hot-fusible glue (PUR) technology of colding pressing continuously exists that PUR glue cost is high to wait deficiency with cannot say for sure to deposit.
(3) summary of the invention
The aqueous adhesive of normal temperature cure such as water-based isocyanate glue (EPI) etc. are uniformly coated on the cemented surface (base material or dash board) of composite floor board, and glue-spread is at 120～160g/m
2, by the irradiation of far infrared (IR) light, moisture content and adhesivity in evaporation and the activation aqueous adhesive carry out base material and dash board assembly and enter continuous cold press carrying out compression set then, and unit pressure is 1.2-1.6MPa, and the time of colding pressing is 30s-1.5min.Gluing, IR heating, assembly, cold pressing and each operation of burst in, base material and dash board are through type continuous feed processes, each processing apparatus connects into a streamline operation.Omposite floor continuous laminating techniqu of the present invention adopts the aqueous adhesive such as the water-based isocyanate glue (EPI) of formaldehydeless normal temperature cure, has that no free formaldehyde discharges, floor deformation is little, the cycle of colding pressing lacks and can realize advantage such as continuous automatic production.
As improvement, being rolled onto laminated units (dash board or base material) glueing material is aqueous adhesive such as isocyanates gluing agent (EPI) and polyvinyl alcohol glue, and through infrared dryer (IR) heating, irradiation time is 5～15s, and surface temperature is 40 ℃～50 ℃.Within 12s～20s, enter continuous cold press.
As improvement, dash board is consistent with the base material moisture content, is 5%～10%.Existing technology shows that the moisture content of dash board and base material is usually in 5%～7% scope.And the present invention requires dash board and base material to adopt 5%～10% moisture content, the energy consumption when not only reducing drying, and help to improve the quality of products, can improve the efficient of processing technology.
As improvement, dash board can be timber, bamboo, wooden thin plate of science and technology of thickness 0.3～6mm.Base material can be glued board, batten jigsaw, fiberboard (MDF/HDF), laminated veneer lumber (LVL), particieboard, the wood-plastic clad plate of thickness 3～18mm.The utilization rate that it has improved timber resources has greatly enlarged the variety range of solid wooden compound floor.
As improvement, behind the automatic assembly of dash board and base material, cold pressing through continuous press.Adopt the technology of colding pressing continuously that the floor blank material is carried out compression set, can reduce energy resource consumption, and because the floor blank is not subjected to Temperature Influence, can not produce thermal stress, so slab uniform internal stress, can effectively increase the solid wooden compound floor dimensional stability, reduce bending, warpage and the flutes deform of solid wooden compound floor.
For omposite floor continuous laminating techniqu recited above, unit pressure is 1.2-1.6MPa, and the time of colding pressing is 30s-1.5min, can improve floor stability.
Beneficial effect of the present invention.This solid wooden compound floor manufacturing technology, fully take into account the characteristic of wood materials and normal temperature solidifying water adhesive such as isocyanate adhesive (EPI) and polyvinyl alcohol glue, the employing moisture content is 5%～10% dash board and base material, roller coat normal temperature solidifying water adhesive on laminated units (dash board or base material) surface, adopt the surface of infrared dryer (IR) heating gluing, moisture content and activation glueability in the evaporation glue.Accurate positioning equipment by dash board and base material, automatically continuous assembly dash board and base material, and direct automatic transport and enter continuous press and cold pressing, floor blank after colding pressing, enter the multiple blade saw unit, multiple blade saw is the formation unit of continuous cold press, is configured in after the lamination operation, directly the blank behind the lamination is split into wide floor blank, effectively enhances productivity and processing quality.
Adopt the solid wooden compound floor of this technology manufacturing to have many good qualities: no free formaldehyde discharges, floor deformation is little, the cycle of colding pressing is short, production efficiency is high, can realize advantages such as continuous automatic production and energy resource consumption be low.Therefore, the present invention has boundless production application prospect.
(4) specific embodiment
The invention will be further described below by embodiment.
1. feedstock production: selecting moisture content for use is 5%～10% base material, is glued board, batten jigsaw, fiberboard (MDF/HDF), laminated veneer lumber (LVL), particieboard, the wood-plastic clad plate of 3～18mm as thickness.Selecting moisture content for use is 5%～10% dash board, is timber, the bamboo of 0.3～6mm, the slicing or the sawing thin plate of science and technology wood as thickness.
2. gluing: aqueous adhesive such as the water-thinned isocyanate adhesive (EPI) or the polyvinyl alcohol glue of the normal temperature cure of laminated units (dash board or base material) single face roller coat, glue-spread is at 120～160g/m
2
3. dry: the unit of gluing (dash board or base material) by infrared dryer (IR), the surface of heating gluing, and irradiation time is 5～15s, moisture content and activate glueability in the evaporation glue.
4. assembly: by the accurate positioning equipment of dash board and base material, assembly dash board and base material continuously automatically, and direct automatic transport and enter continuous press and cold pressing.
5. cold pressing: the slab behind the assembly is sent into continuous cold press, and cold press is roll-in, and the slab compressive load per unit area is 1.2-1.6MPa, and the time of colding pressing is 30s-1.5min.
6. subdivision: the floor blank after colding pressing, enter the multiple blade saw unit, be split into wide floor blank.Multiple blade saw is the formation unit of continuous cold press, is configured in after the lamination operation.
Claims (10)
1. an omposite floor continuous laminating techniqu comprises that the gluing (dash board or base material) of aqueous adhesive, far infrared (IR) light shine (evaporation moisture content and activation aqueous adhesive), continuous assembly, cold pressing and subdivision continuously.The aqueous adhesive of normal temperature cure such as water-based isocyanate glue (EPI) and polyvinyl alcohol glue etc. are uniformly coated on the cemented surface (base material or dash board) of composite floor board, and glue-spread is at 120～160g/m
2Shine by far infrared (IR) light, moisture content and adhesivity in evaporation and the activation aqueous adhesive, then base material and dash board are carried out continuous assembly and are delivered to continuous cold press carrying out compression set, unit pressure is 1.2-1.6MPa, the time of colding pressing is 30s-1.5min, finishes continuous laminating, the composite floor board blank subdivision of the dash board of composite floor board and base material and deposits (health).
2. according to claim 1, desired base material is glued board, batten jigsaw, fiberboard (MDF/HDF), laminated veneer lumber (LVL), particieboard, the wood-plastic clad plate of thickness 3～18mm.
3. according to claim 1, desired dash board is timber, bamboo, wooden thin plate of science and technology of thickness 0.3～6mm.
4. according to claim 1, the glueing material that is adopted is aqueous adhesive such as the water-based isocyanate glue (EPI) and the polyvinyl alcohol glue of normal temperature cure, and glue-spread is at 120～160g/m
2
5. according to claim 1 and 4, the aqueous adhesive that is adopted utilizes far infrared (IR) light Continuous irradiation coated face, irradiation time is 5～15s, surface temperature is 40 ℃～50 ℃, the unit of gluing (base material or dash board) is the through type continuous feed, moisture content and glueability in evaporation and the activation aqueous adhesive.
6. according to claim 1 and 5, the unit (base material or dash board) through far infrared (IR) light Continuous irradiation gluing within 12s～20s, enters continuous cold press.
7. according to claim 1, the assembly technology that base material and dash board adopted is the dash board of continuous cold press of composite floor board and the accurate positioning equipment of base material, and all around positioning accuracy is ± 1mm.
8. according to claim 1 and 7, the laminating apparatus that is adopted is the continuous cold press of composite floor board, the cold press bottom drives for the chain group continuously, top is roller set and the steel band of exerting pressure, the district's chain group face width of exerting pressure is 70～650mm, operation line speed is 2～15m/min, and unit pressure is 1.2-1.6MPa, and the time of colding pressing is 30s-1.5min.
9. according to claim 1 and 8, the composite floor board blank after the lamination adopts multiple blade saw to be split into wide composite floor board blank.
10. according to claim 1 and 9, adopt multiple blade saw to be split into the folded material of stamping of wide composite floor board base and deposited 12～24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101233817A CN101306549B (en) | 2008-06-16 | 2008-06-16 | Composite floor continuous laminating technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101233817A CN101306549B (en) | 2008-06-16 | 2008-06-16 | Composite floor continuous laminating technique |
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| CN101306549A true CN101306549A (en) | 2008-11-19 |
| CN101306549B CN101306549B (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101233817A Expired - Fee Related CN101306549B (en) | 2008-06-16 | 2008-06-16 | Composite floor continuous laminating technique |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179854A (en) * | 2011-06-15 | 2011-09-14 | 南京林业大学 | Method for producing multi-layer solid-wood composite floor by densified poplar single board |
| CN102814850A (en) * | 2012-08-23 | 2012-12-12 | 徐州宏图木业有限公司 | Chip strip one-step molding stream device and manufacturing process |
| CN105799008A (en) * | 2014-12-31 | 2016-07-27 | 江苏快乐木业集团有限公司 | Plywood manufacturing process, plywood manufacturing device and core pulling machine |
| CN106738110A (en) * | 2016-12-01 | 2017-05-31 | 张建明 | A kind of glued board is colded pressing production method |
| CN106827149A (en) * | 2017-01-13 | 2017-06-13 | 徐州基石无醛人造板有限公司 | A kind of production technology of formaldehydeless scientific and technological wood skin |
| CN106827115A (en) * | 2016-12-20 | 2017-06-13 | 南京林业大学 | A kind of composite floor board continuous laminating method |
| CN112549234A (en) * | 2020-12-25 | 2021-03-26 | 圣象新饰材(江苏)有限公司 | Production process of multilayer solid wood skirting line |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141836A (en) * | 1996-08-13 | 1997-02-05 | 赵宝田 | Technology for making large board by using small plate |
| CN1331644C (en) * | 2005-04-05 | 2007-08-15 | 福建农林大学 | Production process of long material in composite bamboo-timber structure |
-
2008
- 2008-06-16 CN CN2008101233817A patent/CN101306549B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179854A (en) * | 2011-06-15 | 2011-09-14 | 南京林业大学 | Method for producing multi-layer solid-wood composite floor by densified poplar single board |
| CN102814850A (en) * | 2012-08-23 | 2012-12-12 | 徐州宏图木业有限公司 | Chip strip one-step molding stream device and manufacturing process |
| CN102814850B (en) * | 2012-08-23 | 2015-12-09 | 徐州宏图木业有限公司 | Chip strip one-shot forming water plant and manufacture craft |
| CN105799008A (en) * | 2014-12-31 | 2016-07-27 | 江苏快乐木业集团有限公司 | Plywood manufacturing process, plywood manufacturing device and core pulling machine |
| CN106738110A (en) * | 2016-12-01 | 2017-05-31 | 张建明 | A kind of glued board is colded pressing production method |
| CN106827115A (en) * | 2016-12-20 | 2017-06-13 | 南京林业大学 | A kind of composite floor board continuous laminating method |
| CN106827115B (en) * | 2016-12-20 | 2019-03-05 | 南京林业大学 | A kind of composite floor board continuous laminating method |
| CN106827149A (en) * | 2017-01-13 | 2017-06-13 | 徐州基石无醛人造板有限公司 | A kind of production technology of formaldehydeless scientific and technological wood skin |
| CN112549234A (en) * | 2020-12-25 | 2021-03-26 | 圣象新饰材(江苏)有限公司 | Production process of multilayer solid wood skirting line |
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|---|---|
| CN101306549B (en) | 2011-02-16 |
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