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Blown Film

A blown film line pumps the molten plastic, at high pressure (300-600Bar), through a circular die that shapes the melt into a tube (the tube can be single layer or multilayer). As the tube is pulled from the die it is stretched and cooled to fix the product to the right size and thickness. The film stretching is longitudinal and lateral. Cooling is done by either water or air and can be external only or external and internal (IBC). On some lines the initial tube is then reheated and stretched again (double bubble). The tube is later collapsed into nip rolls.

Sysmetric provides superior solutions for the different production stages.

  • Sysmetric has the best valued conveying and dosing systems that feed each extruder with the accurate proportion of each ingredient.
  • Sysmetric’s layer control adjusts each extruder capacity to produce the right layer thickness along with the line speed.
  • Sysmetric’s ABCsystem accurately controls the Internal Bubble Cooling blowers, valve and the Calibrator Cage size. The ABC also sets the layer control to work in constant capacity during product changes so any maneuver is easily achieved.
  • Sysmetric’s full line control, integrates layer control, width, IBC, temperature, tensions and other appliances present in the line that needs settings logging or control, under one unified system.

Sysmetric’s special APS (Automatic Pilot Start-up) line control technique, enables any operator to start-up even the most sophisticated line with maximum efficiency and minimum waste.

This is complemented by our computer software that monitors and control full product recipes and produces superior integration with the whole factory.

ABC ™ (Advanced Bubble Control) for fully automatic IBC and cage control. The latest digital ABC system ensure both highly accurate width control and fast reaction times.
CD Series
Batch type gravimetric dosing unit designed for injection molding and extrusion machines. The CD series dosers provides exceptionally good mixing of up to 6 components with accuracy of +/- 0.1%.
Gravimetric continuous weighing unit designed for extruder output supervision, Gram per Meter control and precise layer control in a multi-layer extruder line.
LW Series
Continuous type loss in weight gravimetric dosing unit for dosing and line control. Designed for extruder machines, extruder output supervision, gram per meter control and precise layer control in a multi-layer extruder line.
Hopper Loaders
Sysmetric manufactures a wide range of hopper loaders for central vaccum systems. The hopper loaders are manufactured from stainless steel and provide capacities of up to 40 liters.
Profile Control
The Sysmetric Air Flow Regulation Profile Control uses linear step motor actuators for positioning valves that regulate the air flow in profile control systems for Blown Film Production Lines. Reduces 2 sigma value by at least half and improves downstream quality production
Vacuum Pumps
Central Vacuum Supply units for central vacuum conveying systems. Sysmetric supplies a wide variety of pumps for diverse needs and applications including LOB vacuum pumps for long distance conveying of up to 150 meters.
Silo Loading Systems
Sysmetric has more than 20 years experience in designing and constructing conveying systems that provide complete material handling including silo loading systems and pipework.
Vision MES Extrusion Module
Vision MES software for extrusion process control: The extrusion module of the Vision MES software manages and controls dosing units and provides line control. The software includes supervising and data acquisition of dosing machines for extruders.