MDF / HDF Multi-Openings Production Line with Capacity of 180~500 M³ / Day

Product Description

Product Description
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.
Summary of process flow
(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)
Main characteristics
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. Economic and technical data

Item	Unit	Specification				Remarks
Capacity	m³/d	180	270	400	500	Based on 15mm, density 750kg/m³
Hot press board		Single board	Single board	Double board	Double board
Final board size	mm	1220x2440x(10~25)	1220x2440x(8~15)	1220x2440x(8~20)	1220x2440x(8~20)
Annual working time	d	300	300	300	300
Daily working time	hours	22.5	22.5	22.5	22.5
Wood material consumption	t/a	4.32x104	6.5x104	9.6x104	1.2x105	Boney dry
Resin consumption	t/a	4536	6700	~10800	~13200	Solid content is 100%
Paraffin consumption	t/a	430	650	~1500	~1800	Solid paraffin
Ammonium chloride consumption	t/a	~45	~67	~160	~200	Purity97%
Process water consumption	m³/h	6	8	12	15	Exclude boiler, glue making,etc
Heat energy consumption	Gcal/h	~12	~15	18	22	Exclude heating,glue making,etc
eletric power installation	kW	~3800	4400	~6100	~7800	Exclude boiler,glue making,etc
Persons in works	person	90	90	108	108	Subject local condition
workers on production line	person	51	51	51	51
Auxiliary worker	person	42	42	42	42
Managers	person	6	6	6	6
Mechanic	person	9	9	9	9
Works area	m³	6000	6500	~7000	~7000
Note:the above data are subject to change according to production process and raw material.

Key equipment
Drum chipper
Refiner
Forming line
Hot press
Sanding machine

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