Laboratory Press
Laboratory press for the compression moulding of plates and specimens for laboratory tests


Standards the instrument complies with:   
ASTM D3182;   ISO 293;   ISO 2393;   ISO 6916-1;   UNI 5572;    

Overview 

The laboratory press is an important tool for the preparing of samples with reproducible characteristics. Uniform temperature distribution over the platen surface, mechanical solidity to ensure constant thickness of the sample and consistent closure force are basic elements to ensure this result.

Instrument Characteristics 
The complete design of Gibitre press has been specifically developed to get the best possible results:
- Mechanical structure with 4 columns (60 mm diameter) and sliding platen driven by self-lubricating bushing
- Hydraulic system with 25 tons closure force (which ensures 6.2 MPa pressure over 200x200 mm mould surface)
- 250x250 mm chrome plated steel platens with 40 mm thickness to ensure minimal deflection even at high pressing forces.
- Specifically designed flat heating elements to ensure uniform temperature distribution over the platen surface (± 2°C)

According to the needs of the customer, the press may be equipped with:
- Automatic Press Control,
- Cooling system
- Closure Force Control.

Automatic Press Control 
The PLC controller for the press is provided with a user-friendly Touch Screen Display and permits the free definition of the moulding cycle 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).
Three Moulding cycles can be stored. Each cycle includes 24 moulding steps (including displacements, temperatures setups and pressure setups)




Cooling system 
Cooling is required for moulding of thermoplastics because the moulded part must be brought to solidification temperature before opening the mould.
The cooling is performed by means of integrated cooling platens and requires the connection to a water source or a chiller.
The Automatic Press Controller automatically regulates the cooling system according to the temperature and cooling rate set in the moulding cycle.
When the set final temperature has been reached, the platens may be automatically opened for the extraction of the moulded part. The water leaving the press must be cooled before being discharged. An optional reservoir for outgoing water treatment is available.


Closure Force Control 
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.


Moulds 
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.



Gibitre Press Logger 
The Automatic Press Control device is fitted with a USB port which permits the connection to a Pc. The Gibitre Press Logger program permits the continuous recording of the press conditions (temperature, pressure, moving platen position, cycle step). Both graphical and numerical recording is provided with automatic generation of daily storage files. The program is compatible with Windows 7 and 8 and 10 (64 bits).


Instrument Characteristics 
 
Max useable platen surface 
250 mm x 250 mm 
Max closure force 
25 Tons 
Max platen stroke 
200 mm 
Temperatures 
Up to 250°C (300°C optional).
0.1°C Resolution.
Maximum Temperature difference in the 200x200 mm central area: 2°C 
Cooling System (Option) 
Cooling of the platens with controlled cooling gradient. The cooling is controlled using the Automatic Press control PLC device 
Platen cooling (option) 
Setup of the press to permit the continuous control of the closing force with regulation between 10 and 250 kN (1000 to 25000 kg) with force regulation step of 10 N. The maximum error in the regulation is 1 kN. 
Press control device 
 
Touch Screen PLC controller 
PLC with touch-screen display. Permits to: • set displacements of the moving plate • set the temperatures • activate the cooling and cooling rate (with cooling option) • set closure force (with force regulation option) 
Safety Devices 
 
Safety Devices 
• Safety Pushbutton.
• Doors with safety switch 
Labelling 
CE Labelling 
Calibration 
 
Calibration Report 
Calibration report with traceability to primary standards in conformity with the Calibration requirements specified in ISO 2393 standard 


Calibrated parameters 
The certificate includes the calibration of:
- temperature of the platens. The measure is performed in 9 different points of the platens and at 3 different temperatures (140°C, 170°C, 200°C).
- Closure force (with Pressure control option) 
Construction Characteristics 
 
Platen temperature control 
- Electrical heating.
- Independent temperature control of the plates by means of PID controllers 
Power supply 
380 VAC ±10%,50 Hz ±3, 10 A,three-phase -Other on request 
Electrical power 
6 KW 
Instrument dimensions (with mounted side drawer) 
(Width x Depth x Height) 1200 x 950 x 1800 mm 
Instrument dimensions (without side drawer) 
(Width x Depth x Height) 650 x 950 x 1800 mm 
Weight 
520 Kg 
Cooling System 
 
Features 
The cooling is perform with the connection too a water source (or a chiller). The control of the cooling and of the cooling rate are controlled by the PLC controller. 
Connection to cooling liquid 
The water supplied to the Press must be demineralized.
The fittings for the inlet water is 1/4" 
Insulated tank for cooling water (optional) 
The hot water, which exits from the cooling circuit, must be cooled before being discharged. The insulated tank permits to store and cool the water before the discharge 
Water consumption 
The cooling of the platens of the press, starting from 250°C down to 70°C requires approxiametely 30 liters of water. The quantity changes depending from the temperature of the water used. 
Software 
 
Gibitre Press Logger 
Software compatible with Windows 7, 8 and 10 for continuous recording of the press conditions (temperature, pressure, moving platen position, cycle step).
The software is connected to the press with USB cable 


Gibitre Instruments
Via dell'industria, 18
Bergamo (Italy)
te. +39 035 461146
www.gibitre.it
info@gibitre.it

Gibitre Instruments
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Laboratory Press

Laboratory press, with 250x250 mm platens and 25 T closure force, for the compression moulding of plates and specimens.




Standards the instrument complies with:   ASTM D3182;   ISO 293;   ISO 2393;   ISO 6916-1;   UNI 5572;    

 
Overview 

The laboratory press is an important tool for the preparing of samples with reproducible characteristics. Uniform temperature distribution over the platen surface, mechanical solidity to ensure constant thickness of the sample and consistent closure force are basic elements to ensure this result.
Instrument Characteristics 
The complete design of Gibitre press has been specifically developed to get the best possible results:
- Mechanical structure with 4 columns (60 mm diameter) and sliding platen driven by self-lubricating bushing
- Hydraulic system with 25 tons closure force (which ensures 6.2 MPa pressure over 200x200 mm mould surface)
- 250x250 mm chrome plated steel platens with 40 mm thickness to ensure minimal deflection even at high pressing forces.
- Specifically designed flat heating elements to ensure uniform temperature distribution over the platen surface (± 2°C)

According to the needs of the customer, the press may be equipped with:
- Automatic Press Control,
- Cooling system
- Closure Force Control.
Automatic Press Control 
The PLC controller for the press is provided with a user-friendly Touch Screen Display and permits the free definition of the moulding cycle 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).
Three Moulding cycles can be stored. Each cycle includes 24 moulding steps (including displacements, temperatures setups and pressure setups)

 
Cooling system 
Cooling is required for moulding of thermoplastics because the moulded part must be brought to solidification temperature before opening the mould.
The cooling is performed by means of integrated cooling platens and requires the connection to a water source or a chiller.
The Automatic Press Controller automatically regulates the cooling system according to the temperature and cooling rate set in the moulding cycle.
When the set final temperature has been reached, the platens may be automatically opened for the extraction of the moulded part. The water leaving the press must be cooled before being discharged. An optional reservoir for outgoing water treatment is available.

Closure Force Control 
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.

Moulds 
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.

Read more about Gibitre Moulds
Gibitre Press Logger 
The Automatic Press Control device is fitted with a USB port which permits the connection to a Pc. The Gibitre Press Logger program permits the continuous recording of the press conditions (temperature, pressure, moving platen position, cycle step). Both graphical and numerical recording is provided with automatic generation of daily storage files. The program is compatible with Windows 7 and 8 and 10 (64 bits).

 
Technical specifications
Reference Standards
Standards the instrument complies with:  ASTM D3182; ISO 293; ISO 2393; ISO 6916-1; UNI 5572;  
Instrument Characteristics
Max useable platen surface  250 mm x 250 mm  Max closure force  25 Tons  Max platen stroke  200 mm  Temperatures  Up to 250°C (300°C optional).
0.1°C Resolution.
Maximum Temperature difference in the 200x200 mm central area: 2°C 
Cooling System (Option)  Cooling of the platens with controlled cooling gradient. The cooling is controlled using the Automatic Press control PLC device  Platen cooling (option)  Setup of the press to permit the continuous control of the closing force with regulation between 10 and 250 kN (1000 to 25000 kg) with force regulation step of 10 N. The maximum error in the regulation is 1 kN. 
Press control device
Touch Screen PLC controller  PLC with touch-screen display. Permits to: • set displacements of the moving plate • set the temperatures • activate the cooling and cooling rate (with cooling option) • set closure force (with force regulation option) 
Safety Devices
Safety Devices  • Safety Pushbutton.
• Doors with safety switch 
Labelling  CE Labelling 
Calibration
Calibration Report  Calibration report with traceability to primary standards in conformity with the Calibration requirements specified in ISO 2393 standard  Calibrated parameters  The certificate includes the calibration of:
- temperature of the platens. The measure is performed in 9 different points of the platens and at 3 different temperatures (140°C, 170°C, 200°C).
- Closure force (with Pressure control option) 
Construction Characteristics
Platen temperature control  - Electrical heating.
- Independent temperature control of the plates by means of PID controllers 
Power supply  380 VAC ±10%,50 Hz ±3, 10 A,three-phase -Other on request  Electrical power  6 KW  Instrument dimensions (with mounted side drawer)  (Width x Depth x Height) 1200 x 950 x 1800 mm  Instrument dimensions (without side drawer)  (Width x Depth x Height) 650 x 950 x 1800 mm  Weight  520 Kg 
Cooling System
Features  The cooling is perform with the connection too a water source (or a chiller). The control of the cooling and of the cooling rate are controlled by the PLC controller.  Connection to cooling liquid  The water supplied to the Press must be demineralized.
The fittings for the inlet water is 1/4" 
Insulated tank for cooling water (optional)  The hot water, which exits from the cooling circuit, must be cooled before being discharged. The insulated tank permits to store and cool the water before the discharge  Water consumption  The cooling of the platens of the press, starting from 250°C down to 70°C requires approxiametely 30 liters of water. The quantity changes depending from the temperature of the water used. 
Software
Gibitre Press Logger  Software compatible with Windows 7, 8 and 10 for continuous recording of the press conditions (temperature, pressure, moving platen position, cycle step).
The software is connected to the press with USB cable 
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CE certificate
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