Goettfert FFU300 Flat Film Unit

Overview

The Goettfert FFU300 Flat Film Unit is a precision-engineered laboratory-scale film casting system designed for the controlled production of thermoplastic polymer films under reproducible processing conditions. As a core component of Goettfert’s X-trude extrusion platform, the FFU300 operates on the principle of melt-cast film formation: molten polymer is extruded through a precision slit die, cast onto a temperature-controlled chill roll, solidified via conductive cooling, and subsequently drawn at regulated velocity before being wound under programmable tension. This process enables systematic investigation of structure–property–processing relationships in polyolefins, PET, PLA, TPU, and other engineering thermoplastics—critical for formulation development, rheological characterization, and pre-production feasibility studies.

Key Features

• Modular integration with Goettfert X-trude single-screw extruders (e.g., X-trude 12, X-trude 25), ensuring seamless melt delivery and thermal stability across shear rates typical of industrial film lines.
• Adjustable chill roll temperature range (typically –20 °C to +80 °C, optional extended range), enabling crystallinity control and phase morphology tuning in semi-crystalline polymers.
• Dual-zone traction drive with independent speed regulation (0–50 m/min) and high-resolution encoder feedback, supporting precise draw ratio control from 1:1 to >10:1 for biaxial orientation simulation.
• Decoupled winding station featuring servo-controlled torque motor and real-time tension monitoring (0–50 N), eliminating slip-induced thickness variation and minimizing edge curl or wrinkles.
• Safety-integrated interlock architecture: automatic power cutoff upon detection of extruder overload, chill roll stall, or winding jam—compliant with EN ISO 13857 and IEC 61800-5-2 standards.
• Compact footprint (1735 × 1965 × 660 mm) and modular frame design facilitate installation in ISO Class 7 cleanrooms or QC laboratories with limited floor space.

Sample Compatibility & Compliance

The FFU300 accommodates a broad spectrum of thermoplastic resins—including LDPE, HDPE, PP, PS, ABS, PC, and biodegradable polymers—without requiring hardware modification. Standard die widths (70–420 mm) and interchangeable chill rolls (220/320/420 mm width) allow rapid adaptation to varying sample volumes and target film widths (50–400 mm). All wetted components contact surfaces are electropolished stainless steel (AISI 316L) or anodized aluminum, meeting FDA 21 CFR §177.1520 requirements for food-contact polymer testing. The system supports GLP-compliant operation when paired with Goettfert’s certified data acquisition modules, providing full audit trails for parameters including melt temperature, chill roll surface temperature, line speed, and winding tension—traceable to NIST-calibrated reference sensors.

Software & Data Management

Control and monitoring are executed via Goettfert’s proprietary WinTrude software suite (v5.2+), which provides synchronized logging of up to 64 analog and digital channels at 100 Hz sampling rate. The interface supports recipe-based operation with parameter locking, multi-step ramp profiles (e.g., staged cooling or variable draw ratio), and real-time deviation alerts. Exported datasets conform to ASTM D883-22 and ISO 1133-1:2011 metadata conventions, enabling direct import into statistical process control (SPC) platforms such as Minitab or JMP. Optional 21 CFR Part 11 compliance package includes electronic signatures, role-based access control, and immutable audit logs—validated per IQ/OQ protocols supplied with system commissioning.

Applications

• R&D of barrier films for pharmaceutical blister packaging (e.g., evaluating EVOH dispersion homogeneity and oxygen transmission rate correlation).
• Optimization of nucleating agent concentration in PP cast films to balance stiffness, clarity, and thermoformability.
• Accelerated aging studies of UV-stabilized PE films under controlled thermal–mechanical stress sequences.
• Validation of rheological models (e.g., Wagner I, Giesekus) by correlating capillary rheometry data with cast film edge bead formation and neck-in behavior.
• Supporting ASTM D2838 (shrinkage), D882 (tensile properties), and D1746 (clarity/haze) test specimen preparation under documented process conditions.

FAQ

Can the FFU300 be used with reactive extrusion systems?
Yes—the unit interfaces with Goettfert’s twin-screw X-trude 35R extruder equipped with vacuum venting and liquid injection ports, enabling in-line polymerization or grafting during film casting.
Is die gap adjustment motorized and repeatable?
Die gap is manually adjusted via micrometer screws with ±1 µm resolution; motorized actuation is available as a factory option (FFU300-MG) with position feedback and recipe recall.
What cooling media are compatible with the chill roll?
Standard configuration uses chilled water (5–15 °C); glycol/water mixtures (–20 °C) or pressurized CO₂-based cryogenic systems can be integrated upon request.
Does the system support inline thickness measurement?
The FFU300 frame includes standardized mounting rails for third-party beta-gauge or IR thickness sensors (e.g., Beta LaserMike or ISRA Vision), with analog signal inputs embedded in WinTrude.
Are spare dies and chill rolls available off-the-shelf?
All standard die widths (70–420 mm) and chill roll assemblies are stocked in Goettfert’s European spare parts warehouse (Dortmund), with typical lead time of 5 business days for EU delivery.