Energy Saving High Frequency Melamine Preheating Machine For MMC Powder

This energy-saving high frequency melamine preheating machine is indispensable front-end equipment for melamine tableware hot forming production lines. It is specially designed for preheating A5 melamine molding compound (MMC powder) before hot pressing. Traditional production directly feeds cold melamine powder into the mold for pressing, which leads to a long curing cycle, uneven internal and external heating of raw materials, and a high rate of bubbling, cracking, warping and surface defects. This high frequency preheater adopts the high frequency dielectric heating principle, heating the powder from the inside out rapidly and evenly. After preheating, the MMC powder has good fluidity, shorter molding time, a lower defective rate and higher output. It can be seamlessly connected with an automatic weighing machine, hydraulic melamine molding press, edge grinding machine and dust collector to form a complete automated production line. With its energy-saving circuit design, it effectively cuts power consumption during long-time continuous running. It is widely used by melamine tableware manufacturers for producing bowls, plates, spoons, trays, kids tableware and hotel dinnerware.

1. High frequency internal heating, uniform temperature distribution. Unlike ordinary surface heating, high frequency heating makes the powder heat evenly inside and out, avoiding local overheating or a cold core, and greatly reducing defects such as bubbles, water marks and deformation.
2. Energy-saving optimized circuit design. Low idle power consumption and higher thermal efficiency compared with traditional heating equipment, helping factories save electricity costs during mass production.
3. PLC touch screen control system. Multiple sets of heating time and power parameters can be saved for different products. One-click switching when changing bowls, plates or other tableware. Simple operation — workers can get started quickly.
4. Fast heating speed. Shortens the hot pressing curing cycle of melamine powder and improves the hourly output of the whole production line.
5. Stable power output. Anti-interference design keeps the equipment in a stable working state under long continuous operation, ensuring a consistent preheating effect for each batch of powder.
6. Closed preheating chamber design. Reduces powder splash and heat loss, keeps the workshop clean and reduces raw material waste.
7. Multiple safety protection. Equipped with over-current, over-voltage, over-temperature and door interlock protection, plus sound and light alarms for abnormal status. The machine stops automatically to avoid equipment damage and safety accidents.
8. Easy maintenance. Core components are well-known brands with stable performance, convenient inspection and replacement of consumables, and a low failure rate.
9. Flexible matching. It can be docked with an automatic weighing machine for automatic feeding, or operated with manual feeding according to the customer's workshop layout.

High frequency dielectric heating relies on a high-frequency electromagnetic field. The polar molecules inside the melamine powder vibrate rapidly under the electromagnetic field, generating heat inside the material itself and realizing internal and external synchronous heating.

1. Weighing: The automatic weighing machine quantitatively weighs the MMC powder.
2. Feeding: The weighed powder is sent into the preheating cavity of the high frequency preheater.
3. Parameter call: Select the preset heating power and time on the touch screen.
4. High frequency preheating: Start the equipment; the powder is heated evenly from the inside to reach the ideal softening state.
5. Alarm reminder: When preheating finishes, the machine gives a prompt.
6. Discharge and molding: Take out the preheated powder and quickly put it into the mold of the melamine hydraulic press for hot pressing and curing.
7. Cycle: The machine is ready for the next batch of powder preheating.

This high frequency preheating machine is specially used for preheating A5 melamine molding powder. It is widely suitable for the production of household melamine tableware, children's tableware, and hotel and restaurant melamine bowls, plates, trays, spoons and other catering products. It is the core supporting equipment of the melamine production line, matched with an automatic weighing machine, hydraulic melamine press, melamine mold, edge grinding machine and dust collector. It is suitable for both new production lines and capacity upgrading in existing factories.

Before packing, the machine is cleaned and precision electronic components are protected separately. The whole machine is wrapped with stretch film and packed in an export fumigated wooden case. Reinforced fixing is adopted to prevent vibration and collision damage during long sea transportation. FCL and LCL shipment are both supported, and shipping marks can be customized.

1. 12 months warranty for the main body; quick-wear parts excluded.
2. Complete operation manual, electrical drawing and operation video provided.
3. 7*24 hours online technical support for fault troubleshooting.
4. Long-term supply of spare parts at factory cost.
5. Overseas on-site installation, commissioning and training can be arranged on request.