(1)Process requirement of base material
1. Process requirements
Use sanded qualified and fine surface of medium, high density board and particleboard. Plate thickness tolerance < 0.2mm;The surface of the board is smooth and flawless, especially not allowing pits and gaps of crushed materials and shall be clean without dust, water marks or spots; The moisture is advisable with 6-8%. The plate should have 10-14 days to keep in good conditions before laminating which makes the uniform moisture.
2. Requirements for Melamine impregnated paper.
It adopts the α cellulose base paper which do not contain lignin and is heat-resisting and no deformation (above 180 ℃).
Weight of base paper: 80-120g/m2;The amount of glue applied is 130-150%.
3. Hot pressing process parameters
Hot-pressing temperature is 180-220 ℃
Maximum unit pressure: 5.3MPa
(2). Process flow
1.1 Forming process
The sanded of man-made board is conveyed to near conveyor which already packed the board by forklift. The Melamine impregnated paper is placed on the shelf near the conveyor. The movable stand is back to the front of the conveyor. The operating workers take the one melamine impregnated paper to put in the belt of the conveyor, and then take the one sanded of man-made board to put above the paper, and last take the other melamine impregnated paper to put above the man-made board. All of above, it is finished forming process.
When the hot press is already finished pressing process, and then opened. The finished board is sucked from the vacuum sucker and transported to the discharging conveyor. In this time, the movable stand is getting into the hot press and putting the man-made board on it and then back quickly. It is second time to form when the movable stand return.
1.3 Hot pressing
When the upper hot plate is closed, according to the requirements of the process, it has finished the adding pressure, holding pressure.
The press has completed the pressing process and then opened. The finished -plate is sucked from the vacuum sucker to the discharging rack.
1.5 Scraping edge
The scraper removes paper edges from the surface of the finished board.
The finished board is cooled.
To use the vacuum suckers to grab and palletize the finished product plates that have been positioned. After palletizing, forklifts are used to transport the whole pile of finished product to the warehouse.
1600T Short Cycle Hot Press for Laminating Parameters:
Nominal Total Pressure:16000KN
Size of Hot Platen:2600*1400*140/120mm(Q235)
Specification of Main Oil Cylinder :320*8PCS
Interlayer Spacing: 200MM
Heating Medium: Oil
Number of Hot Plates:2PCS
Thickness of Board:5-30MM
Way of Feeding: Horizontal
Thickness of Frame:30MM