Introduction
MDF/HDF is Medium Density And High
Density Fibre board, with board densities ranging from 700 kgs to 1000
kgs per cubic meter. Our range of MDF/HDF includes: Plain Medium Density
Fibre Board, Laminated Medium Density Fiber Board, Plain High Density
Fibre Board, Laminated High Density Fiber Board for Flooring, etc. The
thickness of the board range from 6 mm to 25 mm & board size of 8
ft. x 4 ft.
Advantages of MDF/HDF are as follows :
- Homogenous, super smooth surface, no seasoning required.
- No warping, cracking, splitting, knots.
- Free from termites & fungus.
- Moisture and fire resistant.
- Good dimensional stability
Process :
The processes involved in the
MDF/HDF manufacturing are :
- Bagasse Handling Section
Bagasse is transported to the site either in the bale form or loose
form after depithing or without depithing. The bales are fed in the
bale breaker and sent to the depither for removal of pith. Depithed
bagasse is washed and stored or used in the system directly. Stored
bagasse is sprayed with recycled water so that it remain wet and to
avoid fire and degradation. The wet bagasse is further washed,
cleaned and fed to the refiner section. The effluent is treated,
dried and used as manure.
- Refining Section
Cleaned bagasse, having 50% moisture content, is fed to the
digester with the help of a plug feed screw and heated for1-3
minutes at 175 degree C and fed into the refiner housing.
Thereafter, lignocelluloses fiber is mixed with paraffin wax and is
infused with glue. The effluent generated during this process is
treated and the water is recycled.
- Drier Section
Drier section consists of the heat exchanger, drier duct and the
cyclone. The wet pulp is transported through the drier duct by hot
air and is discharged from the cyclone. This dried fiber, having
moisture content of 10 to 12%, is transported to the mat forming
station.
- Forming, pressing, Cooling & Trimming Section.
This section consists of the forming station, transporting
conveyors, loader, press, unloader, cooling wheel, trimming section,
etc. Different thickness mats are made from the fibre, compressed
and transported by conveyor to the loader. They are automatically
off loaded into the hot press and are pressed hydraulically at
temperature of 150-170 ° C at specific pressure of 32kg/cm2.
Thereafter, the boards are automatically transferred to the unloader
in the next repetitive cycle, cooled, trimmed and stacked for curing
for the next 48hours. The waste is used as fuel for the Thermic
fluid boiler.
- Sanding Section
The raw boards, after proper curing, are sanded to get proper
surface finish in the sanding section. The boards are first
calibrated and then fine sanded using different grit sanding belts.
The dust generated is pneumatically transported, passed through the
bag filter for separation of air and dust and is used as fuel for
the thermic fluid boiler.
- Impregnation Plant
Paper from paper roll is passed through the impregnation plant and
is dipped in UF and MF resin. Thereafter, it is dried to the
required level, trimmed, cut and stacked for storage. The effluent
is treated and the water can be recycled after the process is
completed.
- Lamination Plant MDF Board
The Lamination Plant consists of paper storage bay, board handling
system, assembling station, the press and the grading section.
Impregnated papers are kept on either side of the board and fed into
the press. Press is hydraulically operated and heated by thermic
oil. The boards are pressed at 175° C at specific pressure of
35kg/cm2 and are then automatically unloaded in the next cycle,
cooled, trimmed and stacked.
- Lamination Plant HDF Board
Lamination plant laminates the abrasive resistant aluminium oxide
coated paper for flooring requirement.
|
 |
