Prevention of air bubbles in LCD panels. A wide range of models.
Autoclaves for LCD Panel
PTU series

line up:PTU-305VⅢ / PTU-507H / PTU-807H

 ■ Features & Functions
Setting of appropriate condition is easy.
It is possible to create appropriate conditions for removing air bubbles after sticking a polarizing plate in the LCD manufacturing process by setting temperature, pressure, and time in combination.
Improving the adhesion strength between polarizing plate and cell
It is possible to increase the adhesion strength between the polarizing plate and cell after sticking the polarizing plate by applying heat and pressure.
Each setting is easy.
As the high precision digital input system is employed for setting temperature, pressure, time, etc. , settings are easy.
(PTU-305VⅢ can set only temperature and time.)
High precision control system
The temperature control system is a PID control / SSR drive method, and the pressure control system is a ON / OFF control and solenoid valve open / close system or motor-driven valve open / close system, enabling high precision control.
Equipped with various safety devices including interlock mechanism
The door clamping method employs a clutch system driven by gears with secure interlock mechanism. (PTU-305VIII uses the eye bolts for clamping) The chamber is made of stainless steel and the over-temperature prevention device, over-pressure prevention device, pressure safety valve, etc. are installed.
Applicable to the heated and pressurized environments
This equipment is applicable not only to the removal of air bubbles in the liquid crystal display but also to the heated and pressurized environments.
A cycle time is shortened.
A warm-up function enables quick rise time and shorten the cycle time.
Required utilities    
Power supply: Refer to the specifications. Household outlets are not recommended.
 ■ Options
RecorderCabinetDrawer type tray
Recorder for temperature, humidity, pressure
Recorder for temperature and humidity
Cabinet for main body
It can smoothly put in and out specimens.
(PTU-507H / 807H)
Safety cover for lidExhaust ductStackable rack
For PTU-305VⅢFor PTU-507H (with cabinet)
For PTU-807H
Chamber space can be effectively used.
 ■ Specifications
Autoclaves for LCD Panel
Model PTU-305VⅢ PTU-507H PTU-807H
Outside dimensions
(W x D x H mm)
750 x 550 x 1050 850 x 1375 x 1650 1470 x 1515 x 1800
Effective chamber size
(φ x D mm)
250 x 340450 x 600 700 x 600
(Effective height: H400)
Weight (Approximately) 105 kg 370 kg 800 kg
Temperature control methodPID control, SSD drive
TemperatureWorking range50℃ - 100℃
(Service temp. 80℃)
50℃ - 80℃
Control accuracy - ±3℃
Pressure control methodON/OFF control, Solenoid valve open / close system
PressureWorking range0.196MPa - 0.490MPa 0.05MPa - 0.69MPa
Control accuracy - ±0.01MPa
InstrumentationTemperature: Digital setting, Digital display
Pressure: Digital setting, digital / analog display
※PTU-305VⅢ: Analog setting, analog display
Time: Digital setting, digital display (Timer : 99 hr 59 min) 
Lid clamp method Eye bolt clamping method Clutch type lid clumping method
Materials Chamber: SUS304

Top panel: SUS304

Piping: Cu

Exterior panel:
SPCC, (baking finish)
Chamber, inner chamber, lid,shelf:

Clutch claw, chamber support frame:
SS400 (urethane coating)

Control box:
SECC and AL (baking finish)

Piping: Cu
Chamber, lid, shelf:

Clutch door (only clutch part):
SS400 (epoxy resin paint)

SUS304 and Cu

SS400 L-shaped angle
(baking finish)

Exterior panel:
(baking finish)
Pressure vessel categorySmall sized pressure vesselSecond class pressure vessel
Power supplyAC220V / 230V / 240V, 50Hz / 60Hz (Single phase)
(Select one from the above power supply voltages, when placing an order.)
Power connection
Ring terminal
Safety devicesSafety pressure valve, Over-pressure prevention device, Low wtaer cut off device, Earth leakage breaker,
Breaker for heater, Thermal fuse, Control fuse
Supplied accessoriesPower cord
Pressure-proof hose x 2,
Nut tightening tool x 1
Power cord,
Shelf x 2
※The above outside dimensions do not include the size of protrusions.
※The performance value was obtained when ambient temperature was normal and the test chamber was empty.
※Specifications and appearance are subject to change without notice due to continuous product improvement.