The technology behind the MDF toilet seat(1)

1. Material preparation(MDF toilet seat)
The first step of MDF production process is material preparation. The equipment mainly includes chipper, belt conveyor, screening machine, bucket elevator, storage bin, etc. The raw materials for MDF production are mainly wood fiber raw materials, including small-diameter wood, branch wood, firewood and processing residues. The ideal raw materials are needle leaf wood 60% ~ 70%, broad-leaved wood 30% ~ 40% and bark content no more than 5%.

2. Preparation of fiber(MDF toilet seat)
The preparation of fiber is mainly fiber separation, which is the core link of MDF production process. The equipment used for fiber separation includes wood chip silo (or preheating silo), small hopper, heat mill, paraffin melting and application device and sizing metering device.

Steps of fiber separation:(MDF toilet seat)
A: Hot grinding. The qualified wood chips are transported into the wood chip silo, and the wood chips are transported to the grinding chamber after cooking and softening. After the wood chips are compressed by the heat mill, the wood chips with high moisture content are extruded with moisture.

B: Wax. The paraffin is heated and melted by the steam coil, and the melted paraffin is pumped into the wood chip before entering the grinding chamber through the pump pipeline. After separation into fibers, the paraffin is evenly distributed on the fiber surface.

C: Sizing. Urea formaldehyde resin is fed into the double metering tank through the filter and glue conveying pump, and then pumped into the discharge pipe to glue the fiber. The fiber in the discharge pipe is in a high-speed flow state, and the glue liquid is atomized and evenly sprayed on the fiber surface. Curing agent and formaldehyde capture agent can be added to the rubber tank for mixing.