Energy Saving High Frequency Melamine Preheating Machine For MMC Powder

This energy-saving high-frequency melamine preheating machine is specially developed for A5 MMC melamine molding compound powder and serves as essential supporting equipment for a melamine tableware production line. It adopts the high-frequency dielectric heating principle, heating the MMC powder uniformly from the inside out and quickly turning loose powder into a compact preheated cake before it is fed into the hydraulic melamine press.

It greatly optimizes the subsequent hot-pressing molding process and is widely used in the mass production of bowls, plates, spoons, trays and other melamine dinnerware. Compared with traditional heating methods, it features lower power consumption, stable heating and less material waste, helping manufacturers cut production costs and improve finished product quality.

• Energy-saving high-frequency heating technology: Internal molecular heating with less heat loss delivers an obvious power-saving effect. It avoids the uneven surface heating and cold core typical of ordinary heating machines, providing stable temperature control and low running cost.
• Uniform heating, low defect rate: MMC powder is heated evenly inside and out, effectively eliminating air bubbles, water marks, insufficient filling, cracks and other common defects of melamine products, improving surface gloss and product yield.
• Fast preheating speed: The short heating cycle reaches the preset molding temperature within 30–60 seconds, greatly shortening the molding cycle of the press and improving the overall production capacity of the workshop.
• Stable and easy operation: Equipped with a digital timer and adjustable power gear, operators can set heating time and power according to different MMC powder weights and formulas. Operation is simple, parameter storage is convenient, and the requirement for workers is low.
• Durable industrial structure: Adopts a high-quality vacuum tube, thickened cabinet and movable casters. The whole machine runs stably for long periods and is easy to move and maintain, with a long service life.
• Wide compatibility: Suitable for A5 grade melamine MMC powder and also compatible with urea formaldehyde powder and bakelite powder, matching with different tonnage melamine hydraulic presses.

High-frequency dielectric heating: MMC powder is a dielectric material. Under a high-frequency alternating electric field, the polar molecules inside the powder vibrate rapidly, converting electric energy directly into heat energy inside the material. There is no heat conduction delay, realizing synchronous and uniform heating inside and out, which is different from external radiation heating. After preheating, the powder becomes a soft cake with consistent temperature that flows better in the mold during hot pressing.

1. Weigh the required MMC powder and place it evenly on the electrode plate.
2. Set the heating time and power according to the powder weight.
3. Close the cover and start preheating.
4. The machine stops automatically after the countdown; take out the preheated melamine cake.
5. Send the preheated cake to the melamine press for compression molding.

A perfect match for a melamine tableware production line, this machine is used for preheating A5 MMC powder for making melamine bowls, dinner plates, kids tableware, spoons, cups, serving trays and melamine kitchenware. It can be used together with a melamine powder automatic weighing machine, hydraulic molding press and edge grinding machine to form a complete automatic melamine production line.