MDF / HDF Multi-Openings Production Line with Capacity of 180~500 m³ / Day

Product Specification

MDF / HDF Multi-Openings Production Line with Capacity of 180~500 cbm per day

The 180-500m³/day MDF/HDF production line uses raw material through chips preparation, fiber manufacturing, glue dosing system, forming and hot pressing, cooling &trimming and sanding section to make MDF/HDF board. The final size can be 4 x 8, 6 x 8, 6 x 9, 4 x 12, 6 x 12, 6 x 18. The MDF/HDF board has homogeneous structure, smooth surface, good machining specification and manufacture performance. It is the ideal substitute of nature wood.

(500m³/d MDF Production Line Flow chart)

• Chips Preparation Section: The raw material is reduced into sized wood-chip, then the wood-chip is conveyed into a chip silo for temporary storing, via swinging screen to remove small particles, mud and sand.
• Fiber Preparation Section: Wood-chip out-feeding from pre-heat silo, entering digester vessel via plug-screw feeder to cook and soften the wood-chips, the cooked wood chip is reduced into fiber by the function of heat and mechanical movement. Then the wet fiber is conveyed by high-speed & high-pressure wind via cyclone &rotary discharge fall to the forward-backward belt conveyor, then sent to forming metering silo.
• Glue Dosing System: Our technique is glue dosing before drying. Melt paraffin is sent to the de-fiberator, mixed homogeneous with the fiber. The glue mist adheres to the surface of fiber by the high-speed wind-flow in the drying pipe.
• Forming and Hot-Pressing Section: Dry fiber is sent into the metering silo by wind-conveying system. There is vacuum box under the mesh belt. Fiber is adhered on the mesh belt, thus forming a mat. Pressed by the pre-press, the mat becomes into a relatively density mat, then cut into sized mat by mat-transversal-longitudinal saw. Transported by synchronous-belt-conveyor, acceleration-belt-conveyor, storing-belt-conveyor, etc. The mat is carried to board loader. The caul-less belt-tray of the loader transports the mats into hot press, meanwhile, the pressed rough board is pushed out on the un-loader. The mat stays on the press-platen of a hot press, then it is pressed into a certain thickness under the function of high-pressure and high temperature. The un-loader discharges the board one by one.
• Cooling &Trimming, Sanding section: The board after hot pressing, passing a board-turning-cooling machine, roller-conveyor, then entering transversal-longitudinal saw, is cut into size medium density fiberboard. After sanding, checking, rating, stacking, packing, finally the board is sent into ware-house for storage.

(285 m³/d MDF Production Line Flow chart)

• Adopts reliable, steady running de-fiberator made under latest-tech, which can control the fiber quality and meet the productive capacity requirement, greatly reduce the consumption of electricity and heat.
• The pre-press adopts mesh belt, upper and lower belt are driven separately, to avoid the influence on the mat quality caused by speed-difference of the two belts and wind discharge problem.
• Mat conveying line is composed by flexible belt conveyer and saw acceleration belt conveyer, lest the mat distort during accelerating and departing.
• Hot pressing adopts the technical-process-curve of all position control, to ensure the board section-structure-density and stable quality.
• The wide-belt-sander improves the board finish quality, lowers the running cost.
• The electric control system adopts the world-advanced PLC control system, with on-site communication BUS control, the customer can set the technical-process-data, operate and monitor the machine on line, record the mal-function during the production. The computer -control is more reliable, and the line can work stably.

• Drum chipper

• Refiner

• Forming line

• Hot press

• Sanding machine