CN103419265A - Process method for producing medium density fiber board by utilizing waste wood - Google Patents
Process method for producing medium density fiber board by utilizing waste wood Download PDFInfo
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- CN103419265A CN103419265A CN201310376478XA CN201310376478A CN103419265A CN 103419265 A CN103419265 A CN 103419265A CN 201310376478X A CN201310376478X A CN 201310376478XA CN 201310376478 A CN201310376478 A CN 201310376478A CN 103419265 A CN103419265 A CN 103419265A
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- medium density
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Abstract
The invention relates to a process method for producing a medium density fiber board by utilizing waste wood. Used raw materials adopt worthless branches and residuums generated by wood processing, such as scantlings, battens, waste veneers and log cores; in the sizing process in the process of producing the fiber board, FM-1 urea resin is used; and the process flow for producing the fiber board comprises the steps of chipping the raw materials, screening, pulping, sizing, drying, paving, pre-pressing, carrying out hot pressing, cooling the board, trimming edges, sanding and forming. Due to adoption of the technical scheme, the waste wood raw materials can be sufficiently utilized and the high-quality medium density fiber board with uniform thickness and smooth surface is produced.
Description
Technical field
The present invention relates to the technical field of waste wood recycling in comprehensive utilization of resources, relate in particular to a kind of process of utilizing waste wood to produce medium density fibre board (MDF).
Background technology
Residue material, little building blocks, lath, waste single boards, log core and the good-for-nothing majorities such as branch bifurcation of timber processing are originally all discarded or have incinerated, carry out in recent years various Reuse of Throwaway Materials, but, for these discarded objects, producing the medium density fibre board (MDF) this respect, utilize degree and produce product all not ideal enough.
Summary of the invention
The objective of the invention is for the problem of mentioning in background technology, disclose a kind of process of utilizing waste wood to produce medium density fibre board (MDF).
Utilize waste wood to produce the process of medium density fibre board (MDF), what use raw material to adopt is that the residue of good-for-nothing branch and timber processing is as scantling, lath, waste single boards and log core; Produce this kind of applying glue operation in the fiberboard process and use FM-1 Lauxite; The technological process of producing this kind of fiberboard is: raw material is chipped-is screened-slurrying-applying glue-drying-mat formation-precompressed-hot pressing-buck-saw limit-sanding-moulding.
FM-1 Lauxite that described applying glue operation is used, applying glue concentration is 3～7%, and mainly by the pH value of this kind of resin, controls temperature, and its temperature in the hydraulic pressure process is controlled between 140～165 degrees centigrade.
Adopt the beneficial effect of the technical program to be: to utilize fully discarded wood raw material, produce thickness even, ganoid high-quality medium density fiber sheet material.
The specific embodiment
This kind produced the concrete mode of medium density fibre board (MDF) process: it is divided into four workshop sections, and material papering section-hot pressing, pressing section-finished product prepare workshop section-sanding workshop section.What wherein get the raw materials ready employing is the residue of good-for-nothing branch, little building blocks, lath, waste single boards, log core and timber processing.The applying glue of hot-forming main employing, hot-pressing technique, applying glue adopts FM-1 Lauxite, and applying glue concentration is 3～7%, and temperature is controlled at 140～165 ℃.Its concrete operations flow process is:
1, raw material is transported to the drum chipper drum chipper by belt conveyer raw material is cut into to uniform wood chip, is beneficial to transportation, storage, the fiber separation of raw material.Raw material is delivered to the drum-type wood chip by belt conveyer after chipping and is selected machine to carry out the wood chip screening,, the defective material sources such as the chip in wood chip, large wooden unit are fallen in screening.Qualified material source after screening has belt conveyer to deliver to bucket elevator.Be promoted to a high position, by belt conveyer, deliver to inverse time feed bin buffer storage.Being stored in wood chip in feed bin has the vibrations blanking groove of lower end, and the vibrations blanking is to belt conveyer.Be promoted to a high position by belt conveyer and bucket elevator again, and by the belt conveyer that oil cooling type electromagnetic diironing apparatus is housed, wood chip sent into to pre-hot aggregate bin.Wood chip is softening by steam preheating in pre-hot aggregate bin.Send into the defibrator feed auger by the vibrations drawing mechanism again.Timber forms stopper after the cork screw extruding.Send into the boiling cylinder, carry out boiling softening.Is furnished with novel gamma-rays level control system on the boiling cylinder.Be used for accurately controlling material level and digestion time.
2, wood chip carries out the fiber decomposition in boiling is softened by material level spiral Song Yu defibrator pattern body, and after production line is used first applying glue, rear dry method is processed fiber.Paraffin and glue automatically spray into fiber and evenly mix by certain sowing amount in the defibrator exit.The fiber that defibrator grinds enters dry airduct after applying glue, water-proofing treatment, and fiber is impacted by the high speed thermal current in drying duct, with suspended state by wink-dry.For preventing fiber breaking out of fire in dry run, drying duct is provided with spark autoalarm and fire extinguisher.Can put out a fire in time by automatic alarm.Dry fiber separates with dry gas by the cyclone separator of drying duct end, discharging opening at cyclone separator, dry fiber is sent into dry fiber feed bin by turning the material valve with the fire prevention spiral conveyer, if generation fire alarm, the spiral conveyer of preventing fires can automatic turning, and pulp fibres is discharged, and prevents that fiber with Mars from entering feed bin and causing fire, dry fiber feed bin is mainly used in dry thickness volume acceptable fiber buffer storage, for extravagant machine provides the dry fiber material source of even abundance.This production line is selected the extravagant forming machine of machinist, extravagant head is selected Novel inclined standard structure, be conducive to improve the uniformity of slab density, extravagant machine lower end is furnished with the negative pressure box group, extract the unnecessary air in slab, to improve extravagant slab quality, extravagant machine exit is furnished with advanced water content meter, the water content of energy Accurate Measurement slab, the moisture content in the real-time option board base.The slab of moulding is sent into preformer and is carried out precompressed, is that slab has certain packing and support strength.To guarantee that slab is transporting, cuts, while filling plate, can not produce fracture, breakage.Can reduce slab thickness, thereby reach, dwindle the purpose that platen is opened shelves simultaneously.Slab after precompressed is sent into synchronous transporter by the continuous slab moving belt, and has slab edging saw to be cut into burr plate width, then carries out laterally according to joint through the slab cross-cut saw, obtains doing batch size with the heating platen surface is complementary.After cutting edge, slab is sent to the acceleration transporter after the metal detector monitoring.Deliver to plate blank conveyer by accelerating transporter, then, through loader, send into hot press, after hot press is filled slab, utilize the simultaneous opening and closing device quick-make.And automatically complete whole pressing cycle by predetermined hot pressing curve.Hot press can be to crucial hot compression parameters in hot pressing, as: time, pressure rising time, the release time, the pressing plate opening time is regulated, to meet the requirement of different heat pressing process, and 10 layers of 4*16 foot hot press of this line configuration, press adopts underlying to help the plug cylinder pressuring method, have hydraulic system that the hydraulic cylinder hydraulic power is provided, the thermal medium of heating platen can adopt steam or conduction oil
3, hot pressing finishes, and press unloading automatically opens, when loader is packed the slab of filling into hot press again, by, do jointly and cut somebody's hair, the middle density made is moulded to plate and send into the plate machine of moulding.Moulding plate successively is admitted to finished product by the unloader drawing mechanism and prepares workshop section.The sheet material temperature that height is pressed into is very high, and must delivering to the reprint cooling agent by cooling clean plate transporter, to carry out nature cooling.Burr are moulded plate after cooling, deliver to edging and trimming saw by the ejecting plate transporter, to mould plate according to the meet the requirements plate of moulding of specification of one-tenth, send into transducer according to the edging plate after joint by transfer ejecting plate transporter and carry out centering, and be stacked on hydraulic elevator platform, sheet material is to arriving setting height, hydraulic elevator platform automatically is discharged into fork truck by it and rolls platform, use fork truck to transport sheet material to semi-finished product warehouse the other side's certain hour, sheet material moisture is uniformly distributed, and waits for sanding with the atmospheric temperature district with balance.
4, after inferring certain hour, by fork truck, be sent to the sanding line, by edging plate thickness sanding table pre-hardening thickness second in accordance with regulations, thereby obtain even thickness, the fibrous plate of ganoid middle density, test specified sheet material after sanding to grade, the classification warehouse-in.
| The contrast of employing scheme | Applying glue concentration | The control temperature (℃) | The resin palliating degradation degree | Resin embrittlement degree | The soft formation ratio appears |
| General Lauxite | 8-12% | 150--250 | 20-30% | 15-20% | 21-34% |
| The FM-1 Lauxite | 3-7% | 140-165 | 12-15% | 7-11% | 10.2-16% |
Claims (2)
1. utilize waste wood to produce the process of medium density fibre board (MDF), it is characterized in that: what use raw material to adopt is that the residue of good-for-nothing branch and timber processing is as scantling, lath, waste single boards and log core; Produce this kind of applying glue operation in the fiberboard process and use FM-1 Lauxite; The technological process of producing this kind of fiberboard is: raw material is chipped-is screened-slurrying-applying glue-drying-mat formation-precompressed-hot pressing-buck-saw limit-sanding-moulding.
2. the process of utilizing waste wood to produce medium density fibre board (MDF) according to claim 1, it is characterized in that: FM-1 Lauxite that described applying glue operation is used, applying glue concentration is 3～7%, and mainly by the pH value of this kind of resin, control temperature, its temperature in the hydraulic pressure process is controlled between 140～165 degrees centigrade.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310376478XA CN103419265A (en) | 2013-08-27 | 2013-08-27 | Process method for producing medium density fiber board by utilizing waste wood |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310376478XA CN103419265A (en) | 2013-08-27 | 2013-08-27 | Process method for producing medium density fiber board by utilizing waste wood |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002361A (en) * | 2014-06-16 | 2014-08-27 | 中南林业科技大学 | Flame retardant crop straw/wood composite board paving system and paving method |
| CN104029273A (en) * | 2014-05-29 | 2014-09-10 | 泗县林星板业有限责任公司 | Method and device for producing compressed plates with medium and high density |
| CN104175380A (en) * | 2014-07-31 | 2014-12-03 | 广西三威林产工业有限公司 | Method manufacturing medium density fiberboard by recycling rim charge |
| CN106914968A (en) * | 2015-12-24 | 2017-07-04 | 池州忠大木业有限公司 | A kind of preparation method of fiberboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007025292A2 (en) * | 2005-08-26 | 2007-03-01 | Premomcne, L.L.C. | Medium density fibreboard |
| CN101357469A (en) * | 2007-08-02 | 2009-02-04 | 吉发 | Production method of medium-density fiberboard using waste and old wood |
| BRPI0804194A2 (en) * | 2008-10-10 | 2010-07-06 | Eroni Geraldo Sebben | waste processing process resulting from processed wood and billet |
| CN102139504A (en) * | 2011-01-05 | 2011-08-03 | 杨新芳 | Method of producing medium density fiberboard by the use of waste material |
| CN102848447A (en) * | 2012-09-25 | 2013-01-02 | 普洱市卫国林业局 | Manufacture method of intermediate-density fiber plate |
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2013
- 2013-08-27 CN CN201310376478XA patent/CN103419265A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007025292A2 (en) * | 2005-08-26 | 2007-03-01 | Premomcne, L.L.C. | Medium density fibreboard |
| CN101357469A (en) * | 2007-08-02 | 2009-02-04 | 吉发 | Production method of medium-density fiberboard using waste and old wood |
| BRPI0804194A2 (en) * | 2008-10-10 | 2010-07-06 | Eroni Geraldo Sebben | waste processing process resulting from processed wood and billet |
| CN102139504A (en) * | 2011-01-05 | 2011-08-03 | 杨新芳 | Method of producing medium density fiberboard by the use of waste material |
| CN102848447A (en) * | 2012-09-25 | 2013-01-02 | 普洱市卫国林业局 | Manufacture method of intermediate-density fiber plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104029273A (en) * | 2014-05-29 | 2014-09-10 | 泗县林星板业有限责任公司 | Method and device for producing compressed plates with medium and high density |
| CN104002361A (en) * | 2014-06-16 | 2014-08-27 | 中南林业科技大学 | Flame retardant crop straw/wood composite board paving system and paving method |
| CN104175380A (en) * | 2014-07-31 | 2014-12-03 | 广西三威林产工业有限公司 | Method manufacturing medium density fiberboard by recycling rim charge |
| CN106914968A (en) * | 2015-12-24 | 2017-07-04 | 池州忠大木业有限公司 | A kind of preparation method of fiberboard |
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Application publication date: 20131204 |