Image: Seven-layer line
Labtech has launched a new co-extrusion film blowing line available with up to nine layers and in sizes from 20mm to 120mm die lip diameters. Each die tier is custom made for a specific resin as per the customer’s request.
The film towers are made to suit the specific co-ex film blowing line in respect of die size, number of layers and extruders as well as required output. The nip-roll width of the towers varies from 250mm to 600mm and all towers have motorized height adjustments. The maximum height is made in accordance with the customer’s requirements but as an example the largest 600mm tower has a standard height range adjustable from 3.2m to 4.2m.
The towers are equipped with adjustable A-frames which are equipped with almost friction-free carbon fibre rollers, including adjustable cross rollers inside the frame. The film bubble is stabilised with a cage made from a number of Teflon rollers, which are all simultaneously adjustable with one turning wheel. High power single as well as multi-channel air rings are available for optimum cooling efficiency.
The co-ex film blowing attachment can be connected to a range of Labtech single screw extruders, ranging from the smallest 12.5mm size to the largest 45mm version. All the extruders are 30D long and come with a large variety of screw designs to handle the complete range of co-extrusion film blowing polymers. The smaller extruders are also available with convenient large range height adjustments so that they can be easily moved from one layer to another.
Millmerran Research and Manufacturing Ltd is the exclusive UK agent for the Labtech range of laboratory processing equipment.