Foil line for the extrusion of thermoplastic materials
BG Plast designs and manufactures foil extrusion lines for thermoplastic materials, intended for industrial manufacturers requiring high precision in thickness, constant surface quality and process reliability even during continuous, high-speed production. As a manufacturer of extrusion lines, we develop complete solutions that combine extruders, calenders and advanced control systems, adaptable to various application requirements.
At the heart of the foil extrusion line are the calenders, available in different geometries and configurations, designed for processing a wide range of thermoplastic polymers. Thanks to precision electro-mechanical control of the opening and closing of the rollers, BG Plast lines enable the production of extremely thin and uniform thicknesses, with a production range typically between 0.15 and 1.8 mm, depending on the material and final application.
Our plastic foil extrusion lines are designed to provide process stability even in the production of thin foils, where thickness control and uniform material distribution are critical factors.
Applications of foil extrusion lines
BG Plast foil extrusion lines are used in numerous industrial sectors where tight dimensional tolerances, high-quality surfaces and production optimization are essential. The systems are used to produce foils made of PP, PS, PET, PE, PLA and other thermoplastic materials, primarily for thermoforming, medical packaging and technical packaging applications.
In the medical field, extruded foils are used for applications requiring reliable, controllable materials that meet high quality standards. In the industrial sector, foils are found in technical items, protective covers, separators and flexible components, while in packaging they are a well-established solution for rigid and semi-rigid packaging.BG Plast lines are also suitable for production involving multilayer structures, thanks to the ability to integrate co-extrusion systems, thereby meeting the needs for materials with differentiated functional properties, such as barriers, rigidity, or specific flexibility.
Technical specifications of BG Plast foil lines
Each foil extrusion line is custom-designed based on the material being processed and production specifications. The closing force of the calenders, expressed in kg/linear cm, varies depending on the polymer and is determined by the size of the hydraulic pistons used to move the cylinders. Typical values range from 80 to 120 kg/linear cm, enabling correct lamination pressure even on very thin foils.
Cylinder temperature control is managed by dedicated temperature control units, one for each cylinder, which allow independent control of water flow and temperature. Each cylinder is driven by an independent gear motor unit, a solution that improves process control and production repeatability.
To further refine thickness control, particularly in the production of very thin foils, our systems can be equipped with a cross-axis device, which allows the central cylinder to be offset relative to the other rolls. This feature enables a more uniform distribution of the material between the cylinders, improving the final product quality.The dimensions of the lines and die heads vary according to customer requirements: the cylinder table can accommodate a range from 450 mm to 8,000 mm. Thanks to the various feed-block configurations, we manufacture numerous co-extrusion systems, capable of integrating up to 7 extruders.
BG Plast solutions for foils extrusion
We are your technical partner in the design and construction of extrusion lines, offering reliable, flexible and production-efficiency-focused foil extrusion machinery. Our solutions combine mechanical expertise, advanced process control and customization capabilities to support industrial production that demands precision and continuity.
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