Product Introduction 
The heated platen press integrates hydraulic drive with electric heating. A wet handsheet is placed between the upper and lower heated platens; the hydraulic system applies controlled pressure while the electric heating system provides precise temperature, enabling the sheet to dry and consolidate under combined heat and pressure. The high-retention hydraulic cylinder allows the pump to shut off automatically once the target pressure is reached, with the system maintaining constant pressure via accumulator components for silent, energy-efficient operation. The PID intelligent temperature controller ensures uniform and stable platen temperatures. The unit offers dual functionality—cold pressing for dewatering and hot pressing for thermoforming and calendering—with flexible setting of pressure, temperature, and time parameters to meet diverse application needs from standard sheet preparation to functional composite material molding.

Key Features 
High-Retention Hydraulic System Specialized cylinder and high-retention components maintain pressure for more than 4 hours after pump shutdown, enabling ultra-quiet, energy-saving long-duration pressing.
Electric Heating with PID Control 3000 W heating power with PID intelligent temperature control (±3°C accuracy) ensures uniform and stable temperature distribution during hot pressing.
Precision Adjustable Pressure Working pressure 0-5 MPa adjustable via relief valve; system pressure displayed in real time on a pressure gauge for intuitive monitoring.
Dual Cold/Hot Functionality Meets both the cold-pressing dewatering requirements of QB/T 3703-1999 and supports hot calendering and thermoforming experiments.
Stainless Steel Anti-Corrosion Construction The entire machine is manufactured from stainless steel, offering a lightweight structure, excellent corrosion resistance, and easy cleaning for long-term laboratory use.
Large Platen Area Pressing area of 320×300 mm, piston diameter φ100 mm, and platen stroke of 200 mm accommodate a wide range of sheet and specimen sizes.
Safe and Easy Operation Manual push-button operation with intuitive pressure adjustment; equipped with safety limit stops and overload protection to ensure operator safety.
Complete Accessory Package Supplied as standard with felt cloth, plain cotton cloth, instruction manual, certificate of conformity, and warranty card—ready to use out of the box.

Main Technical Specifications 

FAQ
1. What is the main difference between the Heated Platen Press and the Pneumatic sheet press?
The Heated Platen Press uses a hydraulic drive for higher pressure (0-5 MPa) and integrates an electric heating system, enabling simultaneous heat drying or thermoforming during pressing. The pneumatic press is primarily designed for standard cold-pressing dewatering with lighter operation. Choose the heated model when hot calendering or thermoforming capabilities are required.

2. How long does the pressure hold after shutdown? Why is this feature useful?
Pressure holds for more than 4 hours after pump shutdown. This means the pump automatically stops once the target pressure is reached, and the system maintains constant pressure via accumulator components. This feature saves energy, reduces noise, and enables long-duration pressing under stable pressure—ideal for specialized processes requiring extended holding times.

3. How is temperature set and controlled? What is the accuracy?
Temperature is set via a PID intelligent temperature controller with an accuracy of ±3°C. Both upper and lower platens are equipped with heating elements and temperature sensors. The PID controller automatically adjusts heating power based on real-time temperature feedback, ensuring uniform and stable platen surface temperatures for various material hot-pressing requirements.

4. What specimen sizes can the press handle? Can multiple sheets be pressed at once?

The pressing area of 320×300 mm accommodates specimens up to this size. Multiple standard φ159 mm circular handsheets can be stacked and pressed simultaneously; the specific number depends on sheet thickness and process requirements. Larger square sheets or wood-based panel specimens can also be processed.

5. Does the hydraulic system require regular maintenance?
The hydraulic system is designed as a sealed, maintenance-free unit that requires minimal attention under normal operating conditions. Periodic checks of the hydraulic oil level and quality are recommended. Top up or replace the hydraulic oil if the level is low or oil degradation is observed. Refer to the user manual for specific maintenance intervals.

6. Can it be used for pressing non-paper materials?
Yes. In addition to handsheet hot pressing and pulp molding, the press can be used for wood-based panel hot pressing, composite material lamination, biomass material densification, and other experiments. As long as the specimen dimensions are within the platen area and the required temperature does not exceed 180°C, both hot and cold pressing experiments can be conducted.

After-Sales Service 
Established in 2007 and with nearly two decades of experience, Shandong Annimet Instrument Co., Ltd. is a professional manufacturer integrating R&D, production, and sales of laboratory testing and sample preparation equipment. Quality is our foundation. We are your bridge from concept to reality. We deliver more than just instruments — we deliver confidence. This Heated Platen Press comes with a 12-month warranty and lifetime technical support. Our professional team offers 24/7 service response, free installation guidance, operation training, and hot-pressing process consultation. For any inquiries, please contact our customer service team; we are dedicated to providing comprehensive pre-sales, in-sales, and after-sales support. Hotline: 400-9933-057, Email: anmt_test@126.com.