Blown Film Unit 300 It is suitable for production of small films used by the food industry and in the packaging field where the application of big production machines is often not profitable. A compact unit for blowing, cooling, take off and wind up of extruded hoses.

application Production control:  Monitoring the dispersion performance of compounders or extruders used in batch production  Inspection of incoming goods for gels and color distribution  Inspection in polymer processing Production:  Production of small films used by food industry and in the packaging field Development:  For control of the maximum polymer extensibility  To monitor the suitability of polymers or polymer blends in the laboratory

Blown Film Unit 300 with ALR - M station Machine Frame: The machine frame executed as a stable, movable and fixable support with a central telescope- type profile system. Easy installation of all components. The automatic lifting function enables the Blown Film Unit to be easily adjusted to any take-off height Combination with MBR Online rheometer to measure online MFR and Viscosity Lab – extruder with exchangable cylinder diameter and length ( D= 20 / 30 mm / 1“ )

Blow Film Unit 300 – Göttfert Laboratory extruder  with touch srceen operating panel  with PC- Control – Software ROSwin  Trends and Display  Free definition of single display trends  windows for measured and evaluated parameters  Shear Viscosity  Extensional Viscosity  Correlation for IV  Calculation  Viscosity / Stress / Extensional Viscosity Curves  Rheological Model Fits  First Normal Stress Difference 32bit Software running under Windows 2000 and XP  Data base structure with possibility of data export to Microsoft Excel

Lab-Extrusion single screw Drive: Laboratory extruder 2.2 kW max.screw diameter 30mm Extrusiometer 7.5 kW max.screw diameter 30mm Extrusiometer25-30 kW screw diameter 45mm Screw diameter:Screw length [L/D] 20 mm 20/25 1”20 30 mm20/25 45 mm20/25/30 Dies: rheometer die, round hole die Downstream equipment: flat film, film blow, tubing device, filter measuring head, cable sheeting head, other equipment available

Blow Film Unit schematic Force transducer Decoupling unit Tubeless winding Deflection rolls Force transducer Decoupling unit Tubeless winding ROSWIN software

Blow Film Unit Blow Film Head / Blow Film Die Blown Film Head:  The blown head / blown film die is attached to the laboratory means of a deflection head.  The long orifice land ensures good homogenization and conveyance to the die outlet. Standard dies 30 mm - 50 mm - 60 mm - other diameter and on request -

-1 x mandrel D = 50 mm -1 x orifice D = 51,0 mm = > gap width of 0.50 mm -> LDPE -1 x orifice D = 51.5 mm = > gap width of 0.75 mm -> HDPE -1 x orifice D = 52,0 mm = > gap width of 1.0 mm -> HDPE -1 x orifice D = 52.4 mm = > gap width of 1.2 mm -> LLDPE -1 x orifice D = 53,0 mm = > gap width of 1.5 mm -> LLDPE Applications for Polyethylen

Blown Film Unit dual lip cooling ring 1 Basic Body 2 Cover disc 3 Air conveyance plate 4 Distance sleeve 6 Air guiding ring 7 Thread insert 8 Lower Lever 9 Upper Lever 13 Connection neck 15 Insulation Ring 17 entring Ring 18 Fixing block fine adjustment of the two gaps The blow cooling ring operated at two blow levels even and sufficient distribution of cooling air very narrow tolerances in film thickness

Blown Film Unit Option cooling of cooling air Display for set and actual temperature Temperature range °C The additional cooling of the cooling air is needed for the production of high transparency films Additional automatic Haze measurement for QC is available

Maximum winding diameter 600 mm Blow film unit take off unit / windig motor Core-free winding up Roll width: 320mm Flattening width max. 300 mm Take-off speed m / min

Blow Film Unit Decoupling system Decoupling system with adjustable traction force of 0-50 N Force transducer

Blow Film Unit 300 – Film control system inspection of surfaces. quality control of transparent materials such as films, glass acrylic glass as well. detect fisheyes, blackspots, holes and other inhomogeneities in 10 different class sizes from 5 µm and upwards. lighting unit and high-speed line- sensor connected to a high performance image processing computer optional

Blow Film Unit tempered nip roll  a strong circulation chiller byside ensure a precise and constant cooling of take off rolls or blow film  Nid roll tempered with water or heat transfer oil Rubber nip roll Temperature range – 30°C °C pressure up to 6 bar

Blow Film Unit 300 blow support with central adjustment

Blow Film Unit 300 – Features Modular system:  It's easy to add options and / or design it to a custom system. Control: User friendly control panel:  Clear arrangement of all control modules and displays  Build in SPS control with adjustable parameter  Error diagnosis  Central alarm output makes it easy to handle Decoupling arrangement:  Isolates the forces of the pull off motor and enables the user to set a force of N with a constant force on the film

Options - Dual-lip cooling ring - Cooling of the cooling air - Film quality testing system - Film tear monitoring - Film width measurement controlled - Haze measurement - Gloss measurement Blow Film Unit features / options Features - Decoupling system - Winding-up reels for core-free winding up - Central blow support adjustment - Roll width320 mm (other on request) - Die dimensions 30/50/60 mm (other on request) - Take-off speed0,1-50 m/min - Controlled max. 50N take-off force