Four Column Hydraulic Melamine Press Machine For Bowl Plate Cup Melamine Dinnerware Making

The Four Column Hydraulic Melamine Press Machine is professional thermosetting compression molding equipment specially engineered for mass production of melamine dinnerware, including melamine bowls, plates, deep dishes, cups, spoons, trays and custom melamine tableware sets. Adopting a classic four-column, three-beam heavy-duty frame structure, this hydraulic press delivers stable, uniform and repeatable high pressure together with precise mould heating function. It is the core host machine of a complete melamine production line, matched with melamine mould, melamine preheating machine, automatic weighing machine and melamine decal paper to realize full-process compression molding of MMC melamine moulding compound powder.

Melamine raw powder is a thermosetting material. After quantitative weighing and preheating, the softened MMC material is loaded into the heated mould cavity. Under the combined action of high hydraulic pressure and constant mould temperature inside the press, melamine-formaldehyde resin undergoes a cross-linking curing reaction, flows fully to fill every detail of the mould, and forms solid, dense, glossy melamine tableware after holding pressure and curing. Our four-column melamine hydraulic press supports single-color and double-color melamine tableware molding. Multiple tonnage options from 100T, 150T, 200T, 250T, 300T up to 400T are available to fit different mould sizes, product wall thickness and daily output requirements. It is widely chosen by melamine ware factories for household tableware, kids dinnerware, and catering and canteen tableware production.

1. Rugged Four Column Frame, Stable Pressure Output. Thickened four guide columns and upper, middle and lower beam structure, processed by precision grinding and hard chrome plating. The frame bears pressure evenly without deflection during long continuous pressing cycles. Pressure will not shift during mould closing, holding pressure and mould opening. It ensures consistent wall thickness, uniform density and stable surface effect for every piece of melamine bowl, plate or cup, effectively avoiding defective products caused by pressure deviation.
2. PLC + Touch Screen Intelligent Control System. Equipped with a mature PLC programmable controller and human-machine touch panel. Operators can set and store a full set of molding parameters including mould temperature, closing speed, pressing pressure, holding curing time, exhaust times and mould opening delay. Parameter recipes for different melamine products can be saved and called directly, greatly reducing debugging time when switching between bowl, plate and cup moulds. It comes with fault code display, overpressure, over-temperature and overload protection functions for safer workshop operation.
3. Precision Temperature Control for Heating Plates. High-quality electric heating tubes are embedded inside the upper and lower heating plates. PID constant temperature control keeps mould temperature stable within the preset range. Temperature difference across the whole heating plate is small, so the melamine powder cures synchronously everywhere inside the mould cavity. It prevents local under-curing, over-burning, color difference and pattern distortion when using melamine transfer decal paper.
4. Adjustable Multi-stage Pressure & Exhaust Function. Supports multi-speed closing and multi-stage pressure setting. Slow closing protects the mould surface; high-pressure holding ensures full material flow. Automatic repeated exhaust action can be set according to product structure, discharging trapped gas inside the mould, reducing bubbles, pinholes and white spots on finished melamine tableware, and improving product yield significantly.
5. Wide Compatibility with Mould and Auxiliary Machines. Compatible with standard single-cavity and multi-cavity melamine compression moulds for bowls, plates, cups, spoons and trays. Perfectly connects with automatic weighing machine and melamine preheating machine. It works well with A1, A3 and A5 grade food-safe melamine MMC powder, supporting both ordinary single-color products and two-color layered melamine tableware.
6. Reliable Hydraulic System, Low Noise & Less Oil Leakage. Adopts well-known brand hydraulic pump, solenoid valves and oil cylinder. Optimized hydraulic circuit design reduces impact during mould opening and closing. The hydraulic station is equipped with oil cooling and filtering device. The system runs smoothly with low noise, stable pressure maintaining performance, less oil leakage trouble and long service life for continuous 24-hour production.
7. Easy Maintenance and Humanized Operation Design. The layout of the hydraulic station, electrical cabinet and heating plate is reasonable for daily cleaning and component replacement. The safety light curtain and safety guard are standard configuration to prevent accidental injury during manual loading and unloading. The operation height is designed to match workers' feeding action, suitable for the semi-automatic manual feeding production mode popular in most melamine factories.
8. Customization Support for Different Production Needs. We can customize tonnage, mould opening stroke, heating plate size, working voltage, double-color rotating structure and automatic feeding mechanism according to the customer's existing moulds and production plan. We also provide CE certification and inspection documents for overseas customs clearance.

After the machine is powered on, the heating plates preheat to the set molding temperature in advance. The operator weighs the MMC powder by automatic weighing machine and sends the powder into the melamine preheating machine for uniform preheating to discharge moisture and volatile gas. Then the preheated melamine material is placed into the cavity of the heated melamine mould. After putting melamine decal paper in place if decoration is needed, the press starts its automatic cycle: rapid mould closing, slow mould clamping, pressurizing, multi-times exhaust, high-pressure holding and curing.

Under high temperature and high pressure, the melamine resin powder softens, flows fully and fills the mould cavity, then triggers an irreversible thermosetting cross-linking reaction. After the preset curing time is finished, the pressure releases and the mould opens automatically. Workers take out the finished melamine bowl, plate or cup for trimming and inspection. The whole molding cycle can be adjusted freely according to product thickness, powder grade and mould structure.

This four-column hydraulic melamine press is the core molding equipment for melamine tableware manufacturing factories. It is widely used to produce all kinds of conventional melamine dinnerware: rice bowls, soup bowls, flat plates, deep plates, dessert cups, water cups, spoons and serving trays. It is suitable for food-grade children's melamine tableware with cartoon patterns, hotel and restaurant commercial tableware, school and staff canteen durable melamine ware, promotional customized tableware with brand logo, as well as melamine craft decorations and souvenir tableware. It can form a complete semi-automatic production line when matched with preheater, weighing machine and mould. It also supports later upgrade to double-color melamine tableware production.

1. Before formal production, heat the heating plate to the target temperature and keep it constant for a period of time. Do not load material when temperature is unstable, otherwise product curing degree will be inconsistent.
2. Set proper exhaust times, holding pressure and curing time according to product thickness and MMC powder grade. Too short curing time leads to soft products and easy deformation; overlong curing time will cause surface scorch and energy waste.
3. Keep the mould surface clean. Clean residual melamine flash and carbonized powder regularly every shift, and avoid hard impurities scratching the mould cavity surface and ruining product appearance.
4. Check hydraulic oil level, oil cleanliness, sealing rings and electrical components periodically. Replace hydraulic oil and filter element on schedule to reduce oil leakage and pressure failure.
5. Never remove the safety guard and safety light curtain during operation. Operators must avoid putting hands into the mould closing area.
6. When switching between bowl mould, plate mould and cup mould, readjust pressure, temperature and holding time parameters accordingly. Our technical team can provide a reference parameter sheet.

The main press body is packed with a thick export fumigated wooden case, filled with foam and plastic film for shockproof, dustproof and moisture protection. The hydraulic station and control cabinet are packed separately. When loading together with preheating machine, moulds and other auxiliary machines, we can put multiple wooden cases on pallets for convenient forklift loading and container stuffing. We support FOB, CIF, CFR and other international trade terms. Machine running test video and photos will be supplied before delivery for customer confirmation.

We provide a complete English operation manual, wiring diagram and mould installation guide. Our engineers offer remote online technical support for installation, wiring, parameter debugging and fault elimination. We can also guide customers to adjust the whole production line matching parameters together with the preheating machine. Core hydraulic and electrical parts have a warranty period. After the warranty expires, we can supply original spare parts at favorable prices all year round. If customers arrange on-site engineer service, we can negotiate a relevant service plan.