What's the function of lab small cast film machine？
Laboratory small cast film machine is mainly composed of cast film roll, traction roll, cutter, constant tension winding system, with laboratory small extruder into a small extrusion cast film line, complete plastic particle monolayer or multilayer extrusion flow process.
Major Component:
1.Cast film roll: the roll is driven by an independent servo motor. The speed is adjustable and running smoothly.
2.Traction roll: the traction roll consists of upper and lower rollers. The upper roll is driven by an independent servo motor and the speed is adjustable.The surface of the lower roll is covered with silica gel with moderate hardness. The two rolls can drive up and down movement by controlling the cylinder.
3.Traction roller compaction mechanism: the traction roller compaction mechanism consists of buttons and cylinders, and adjusts the gap between the upper roller and the lower roller through the touch screen.When pressing the lower press button, press the lower roll upward.Press the release button and return the lower roll.After compaction traction roll, traction roller surface elastic deformation will happen but would be in a thin belt between the two roller compaction, and under the action of friction drive thin belt along the horizontal direction, thin belt speed can be adjusted according to the speed of the roller on the control.
4.The rewinding roller is driven by torque motor, the speed is adjustable, the air expanding shaft is convenient to load and unload the paper tube, the constant tension rewinding ensures the rewinding effect.
Major Application：
Laboratory small cast film machine’s main application is:
1. Mono-layer cast film online extrusion
By a small extruder with small cast film machine into a small extrusion mono layer cast film lab line, melt cooling on the cast film roll, thanks to the high precision servo motor driver which used in all power unit, the user can adjust the speed of extruder and cast film roller, then we can get a well control for the thickness.
2. Multi-layer cast film online extrusion
By more than one small extruder with small cast film machine into small multi-layer extrusion stretch film test line, the preparation of double, three, five layers, even more than seven layers structure stretch film, melt cooling on the cast film roll. Thanks to all of the power unit used in high precision servo motor drive, the user can adjust the speed of extruder and cast film roller, then we can get a well control for thickness.
3. Mono-layer or Multi-layer cast film online extrusion, and online MDO stretching.
Based on the above two experimental lines, MDO longitudinal stretching unit can be additionally used to realize the on-line extrusion for mono-layer/multi-layer cast film and the MDO longitudinal stretching test. It is very suitable for the study of the forming technology and formula of functional permeability film and micro porous film.
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