- Decal Paper
- Melamine Tableware
-
Melamine Tableware Machine
- 1200ton melamine machine
- 1000ton melamine machine
- 800ton melamine machine
- 600ton melamine machine
- 550ton melamine machine
- 500ton melamine machine
- 450ton melamine machine
- 400ton melamine machine
- 350ton double colour melamine machine
- 350ton melamine machine
- 300ton melamine machine
- 250ton double colour melamine machine
- 250ton melamine machine
- Melamine Tableware Mould
- Melamine Powder
High Frequency Melamine Preheater for Tableware Automatic Opening Closing Stainless Steel Preheating Machine
Product Detail:
A melamine raw material powder preheating machine is a device that preheats the raw material powder uniformly before it enters the hydraulic press mold. Its core purpose is not to solidify the raw material, but to optimize the subsequent pressing process by increasing the base temperature of the raw material.
5KW High Frequency Preheater Parameter List
| Specifications | Flatelectrode |
|
|
LEP-520 |
| Output | 5KW |
| Power Source | 3Ф220V 380V 415V |
| Power Input | 11KVA |
| Oscillation Frequency | 62MHZ |
| Oscillation Tube | 7T69RB |
| Voltage Switching | stage |
| Time | 999.9S |
| Arrangement of Hood | Motor type automatic opening and closing |
| Preheatin Power | 110℃Within90℃secs. |
| Phenoilc Resin | 1200gr |
| Minolta resin(approximately) | 1000gr |
| Urea shaped mixture | 1500gr |
| Electrode size | 310*340m/m |
| Electrode Spacing | 30-70m/m |
| Dimensions | W D H 620*860*1520 |
| Weight | 260kg |
| Wooden Crate Size | W D H 730*950*1700 |
Main functions and benefits
FAQ
Question1：What is a raw material powder preheater?
It is an auxiliary device that preheats melamine raw material powder uniformly before it enters the hydraulic press mold. It does not handle curing, but rather raises the raw material powder from room temperature to an optimized process temperature (typically 80-110°C).
Question2：How does a preheater help reduce air bubbles in a product?
This is one of the most crucial functions of a preheater. Raw material powders easily absorb moisture from the air. The preheating process effectively removes this moisture and some low-boiling-point volatiles. This significantly weakens the source of water vapor and gas during molding, thereby fundamentally reducing the risk of air bubble formation.
Question3：What is the ideal preheating temperature?
It is typically set between 80°C and 110°C. The specific ideal temperature needs to be fine-tuned based on the characteristics of your raw materials, product shape, and mold design.
Question4：Can I touch the preheated raw material powder directly with my hands?
Absolutely not!
While powder at 80-110°C won't cause immediate severe burns, it's enough to cause skin irritation or even blistering. When the equipment is running, safety operating procedures must be followed to avoid direct contact with high-temperature components and preheated powder. During cleaning and maintenance, always ensure the equipment is powered off and has cooled sufficiently.
Question5：Why must a preheater use a dedicated preheating box?
Preheaters heat raw materials using high-frequency, high-pressure methods. Ordinary thermally conductive metal boxes or low-strength soft plastic boxes are unsuitable for this operation. A dedicated plastic preheating box prevents deformation during heating or affects the heating effect on the raw materials. It also allows the melamine powder to form higher-quality powder blocks after preheating, ensuring the quality of subsequent molding.