High Frequency Melamine Preheater

The High Frequency Melamine Preheater is essential pre-processing equipment for melamine tableware compression molding production lines. It adopts the high-frequency dielectric heating principle, heating melamine powder evenly from the inside out in a short time. After preheating, the melamine powder gains better fluidity, effectively reducing molding defects such as blisters, cracks, water marks, and color differences. It shortens the pressure-holding cycle of the melamine hydraulic press, improves production efficiency, and extends mold service life. This preheater perfectly matches melamine hydraulic molding presses, automatic weighing machines, and melamine compression molds, making it suitable for single-color, two-color, and multi-color melamine dinnerware production.

1. High-frequency uniform internal heating with fast heating speed and consistent material temperature — no surface overheating while the core remains cold.
2. Adjustable heating power and heating time with simple parameter setting, offering strong adaptability for different MMC and UMC raw materials.
3. Fully shielded high-frequency system with stable oscillation and low radiation, equipped with safety interlock protection for the cover.
4. Flat electrode design for easy placement of pre-weighed melamine powder cakes. Optional automatic cover opening and closing function.
5. Compact structure with mobile casters, convenient to move and position in the workshop. Easy cleaning and daily maintenance.
6. Remarkable production improvement: shortens molding cycle, lowers reject rate, and improves product surface gloss.
7. Multiple power specifications optional, compatible with small trial workshops and large-scale mass production factories.
8. CE compliant with wide voltage customization available to meet different country power standards.

Unlike ordinary electric heating, which only heats from the outside, the high-frequency preheater generates an alternating high-frequency electric field. The polar molecules inside the melamine powder vibrate and rub rapidly under the electric field, generating heat evenly throughout the entire material. The preheated melamine powder has a stable and uniform temperature with better fluidity. When fed into the mold for compression, gas can be discharged smoothly during the degassing stage, effectively avoiding bubble defects.

This preheater is widely used in melamine tableware manufacturing factories for preheating raw material before hydraulic compression molding. It is suitable for producing melamine plates, bowls, spoons, trays, lunch boxes, and kids' dinner sets. It is also applicable for preheating other thermosetting molding compounds such as bakelite powder. It is an ideal supporting machine for upgrading the entire melamine production line.

1. Confirm power, voltage, and optional functions according to customer production capacity.
2. Machine assembly, high-frequency debugging, and safety testing.
3. Trial preheating test with melamine powder before packing.
4. Packing: waterproof film + export wooden case.
5. Support FOB, CIF, and EXW trade terms.
6. Provide operation manual, operation video, after-sales technical guidance, and spare parts supply.