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Laboratory press for preparing plates and test specimens compliant with international standards, engineered for uniform heat distribution on the platens and high mechanical rigidity. The result is specimens with consistent properties and thickness, ready for measurement tools and materials quality control.
Ideal for producing specimens to established practices, including compression of thermoplastics (ISO 293, ASTM D1928, ASTM D4703-16) and elastomeric compounds (ISO 2393, ASTM D3182), as well as plates for tests such as ISO 16770 and ISO 6916-1.
A four-column frame with self-lubricating bushings ensures precise alignment and stability; flat heating elements maintain even temperature. A PLC with 10'' touchscreen manages up to 40 automatic cycles, boosting repeatability and productivity. Safety and cleanliness are ensured by an interlocked pneumatic door and enclosed area with fume extraction, CE marked.
Accessories broaden applications: controlled cooling for thermoplastics, phase-b
The laboratory press is an important tool for the preparing of samples with reproducible characteristics.
Uniform temperature distribution over the platen Surface and mechanical solidity to ensure constant thickness of the sample and consistent closure force are basic elements to ensure this result.
• Developed and Produced in Italy
• Fully conforming to ISO 2393, ISO 293, ASTM D3182 Standards
• Mechanical structure with 4 columns (with 60 mm diameter)
• Hydraulic system with 25 tons closure force
• 270x270 mm chrome plated steel platens
• Extremely uniform temperature distribution over the platen surface (± 0.5°C)
• Hi speed heating (up to 15°C/min) and Cooling (up to 50°C/min)
• Touch-Screen display for complete machine control
• 40 programmable moulding cycles
• Connection to software for storage to SQL database of the moulding cycles & curves of your products
• Closed moulding area for easy fume aspiration
• Pneumatic Protection doors with safety lock
• CE Labelling
The control of all the machine functions is carried out through the Touch-Screen Display integrated in the front part.
The 10" color display has been developed to ensure ergonomic use by the operator: it can be tilted during programming operations and positioned in a vertical position so as not to hinder access to the molding area.
The PLC controller for the press is provided with a user-friendly Touch Screen Display and permits the free definition of the moulding cycles by setting:
• The displacements of the moving platen of the press,
• The thermal cycle (different temperatures of the platens and thermal gradients can be set within a moulding cycle)
• The pressure cycle (with the force control option installed).
40 Moulding cycles can be stored. Each cycle includes 30 moulding steps.
The press control PLC can be connected (via USB connection) to the Gibitre_Press_Control software.
The software allows you to:
• Prepare the list of products to be moulded
• Automatically send the Pre-Set temperature, for the product to be moulded, to the PLC of the press and activate its automatic adjustment
• Automatically send the test cycle required, for the product to be moulded, to the press PLC
• Display the trend curves of the platen temperatures and the closing force (if the option is installed) during the execution of the molding cycle.
• Store curves and numerical data in the Gibitre SQL database to keep the complete traceability of the specimen preparation cycle.
Gibitre_Press_Control software is compatible with Windows 10 and 11.
The Digital pressure regulation system is designed for applications that require an accurate control of closure force.
A specific 2-stages hydraulic circuit, which includes proportional regulation valves and continuous fine regulation pumping system, has been designed to ensure accurate pressure control.
The results is a smooth and consistent force control which permit to set the closure force between 10 kN and 250 kN with 10 N set force regulation steps with regulation oscillations lower than 1000 N.
The control of the closing force is performed using the Automatic Press Control that must be installed in combination with the Closure Force Control option.
The Automatic Press Control device permits to set multiple pressure regulation steps within the moulding cycle.
The heating of the press surfaces is carried out by means of flat heating elements specially designed to meet the requirements of the ISO 2393 standard which admits a maximum difference of ± 0.5 °C inside the surface of the platens.
The temperature calibration is carried out through a rigorous control procedure which involves the measurement of 10 points distributed within the molding area.
The heating elements, with a power of 3.5 kW each, allow you to set heating gradients of the platens up to 15 °C/min.
Note: the maximum speed is conditioned by the thermal mass of the mold and the material to be molded.
The cooling of the press platens during the molding cycle is necessary for the molding of thermoplastic materials because the material must be cooled down to the solidification temperature before opening the mold.
Gibitre presses can be equipped with an efficient cooling device that allows the temperature reduction of the platens at a controlled speed (down to -50°C/min).
The cooling device consists of a cooling circuit that can be connected to a demineralised water supply source or to a chiller.
The cooling speed is set in the test cycle and is modulated by the control PID independently in the two planes of the press.
Gibitre presses can be equipped with a cooling device by means of compressed air which allows the temperature reduction of the platens at a controlled speed (down to -3 °C/min).
The device allows to speed up the regulation of the press temperature when molding operations at different temperatures have to be carried out.
The cooling speed is set in the test cycle and is modulated by the control PID independently in the two planes of the press.
The press is equipped with a light indicator which changes color and which allows the machine operating status to be recognized even from a distance. The indicator light identifies the statuses: Press ready, Molding cycle in progress, Temperature in the adjustment phase.
Moulds for producing plates and different types of samples according to international standards are available. Fixing rails with sliding system permit easily handling of the moulds. Mould produced upon customer design and company logo engraving are available on request.
• All the mold models made by Gibitre can be applied to the press using clamping guides.
• The sliding guide on the lower platen allows you to move the mold effortlessly to facilitate the operations of inserting the product to be moulded and extracting the finished moulded part.
Maintenance and Calibration service for your Laboratory Press.
The service includes:
• Ordinaly maintenance of the instrument
• Calibration of the temperature of the platens. The temperature is measured, with the plates closed, in 9 different points of the platens and at 3 different temperatures (140°C, 170°C, 200°C).
• Calibration of the closure Force (50, 100, 150, 250 kN)
• Issue and e-mail shipment of the Calibration Certificate with traceability to primary standards.
• Safety protection doors fitted with safety switch.
• Safety Push-button
• CE labelling
The instrument is totally developed and produced in the plant of Gibitre Instruments in Italy.
All the mechanical parts are produced in the company workshop using modern CNC machines.
Components and sensors from well-known brands are selected in order to ensure the maximum reliability in the measures
Internal trained personnel takes care of all the production stages: assembly, start-up, calibration, packing, shipment and installation.
