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Description:
-Annual 20, 000~400, 000 M2-Product Quality is High & Stable
-Every Year 360 Days Production
-ISO9001:2010
MDF ProductionLine / Medium Density Fireboard Production Line /Fiberboard MakingMachine
1. CMMC can provide complete technology and high-quality equipmentfor MDF Production Line .
2. CMMC had designed and construction over 30 Sets of MDFProduction Line in China and Overseas Such as Korea,Jordan, Vietnan,Indonesia
3. CMMChas very professional enginieering experiece and has high expericedPocess / Mechanical / Electrical / Instruction engineers andtechnicians.
4. CMMCwill provide fullly support for the customers during Construction,Commissioning and Production for MDF Production Line Project.
Productionprocess of MDF line
MDF production line consists of following sections:
1.woodpreparing section:
Wood preparing section
In order to improve fiber separating quality, prolong wood softentime, decline separating time & power supply consumption andincrease productivity, reduce production cost, a special designedpre-heater with 2 grade horizontal preheat before defibrator.It makes this section has longer pre-heating time, the pre-heaterneedn’t control material level than traditional MDF verticalpreheat. Because 2 grade preheat, wood plasticity is greatlyimproved. Uniform, complete, good ventilation and elasticity,tensile strength fiber that closes to natural wood can be got.Quality of MDF board greatly increased.
The raw material mainly is wood chip from small diameter wood log,saw dust of 5-10% of total weight can be added in wood chip, thesmall pieces of ply wood can be used but the piece size should beless than 50x50mm and the quantity less than 20% of totalweight.
2.Fibergluing section:
Adopt traditional jet pipe to spray glue. Match a glue nozzle in ajet pipe which defibrator to pipe drier. Glue metering pumptransfers stable solid content glue into nozzle and at the sametime input compressed air to make glue foggy, mixing uniformly withfiber which is in high speed turbulent state and rollingstate.
3.Fiberdrying section:
Fiber drying adopts 1 grade air dry. Because wet fiber entersdrying pipe, its speed lows greatly drying media speed, under hightemperature gradient state, moisture of wet fiber quickly vapor,and moisture content reduces rapidly. Through control drying mediatemperature & flow, moisture content of fiber reaches processrequirement. There is a spark detector & extinguishing systemin the drying pipe to reduce fire probability least.
4.Fiberstorage and metering section:
In order to avoid material supply and bridge problems in verticalbin, fiber metering bin adopts horizontal bin type. To guaranteeuniform fiber supply, The bin should keep some fiber level, so afiber level instrument is installed in the bin and carries electricinterlock control together with drier & forming machine. Thereis a ventilation hole in the chip bin and tail door can be openedby air-driven. When fire or accidents appear, scraper in bottom ofbin can be reversed and fire chip can be discharged. Out-feed iscontrolled by rotational speed of out-scraper and it will bedisplayed through electric belt weigher.
5.Formingsection:
Adopt vacuum air forming machine or mechanical forming machine inthis section. After drying, fiber mixes with air, it uniformlyspreads on the moving net in high speed air flow type. There is anegative pressure tank under net, avoiding fiber splash. Dryingfiber is adsorbed in the net and forms gradually uniform mat.Flight roller outside forming chamber absorbs redundancy fiber awayand conveys to metering bin. The lower of forming tank is vacuumtank. It uses centrifugal ventilator to form negative pressure. Themedium of Vacuum tank is lower vacuum zone, two sides are highvacuum zone and can be adjusted vacuum through air door. So twosides density of mat is higher than medium mat. A continuousbelt pre-presser is equipped in prepress section. Mat moves underpressed state. Pre-presser has two parts, one is helix angle guidepart, its distance can be adjusted according to matthickness. The other is pressurizing & keeping pressurepart. Mat is pressed to initial strength mat under some linearpressure. After pre-pressing, conveying is divided into threesection. The first is speed-up section. Pre-pressed & cut matis separated rapidly. The second is test section. Waste mat isconveyed to mat return device, then sends to metering bin. Thethird section is to convey qualified mat to hot press.
6.Hotpressing section:
Hot press is a single- opening press based on capacity of the line. Steel belt sends pre-pressed mat into hot press. Single liftingoil cylinder lifts quickly. It greatly increases lifting speed thantraditional hot press and improves board surface pre-solidify,decreasing board surface sanding thickness. After hot pressing,blank mat is sent into combined cutting section by conveyer and cutto the same dimension board.
MDF Production Line / Medium Density Fireboard Production Line /Fiberboard Making Machine
