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Blown Film DIE

Precision Blown Film Extrusion Die: Flat Plate or "Pancake" Design

Precision Blown Film Extrusion Die: Innovative "Pancake" Design

Our patent-pending "Pancake" Blown Film Extrusion Die is engineered to deliver superior performance and consistency. The innovative design features sets of three round plates, creating uniform gaps to minimize flow variations. Each plate in the three-layer arrangement is aligned with extreme precision using specially designed tapered expanding pins, ensuring repeatable and accurate alignment every time.

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Multi-Layer Extrusion Capabilities

With our advanced spiral die design, you can extrude multiple polymer materials into 3-10 layer blown films. The unique system isolates the temperatures of each layer, enabling the processing of polymers with varying melt temperatures and properties in a single, efficient process. This capability ensures optimal blending of polymers, even those with differing thermal properties, over extended periods.

Our extrusion die can handle materials with significantly different melt temperatures or other unique properties in adjacent layers, offering flexibility in film production for a wide range of applications.

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Advantages of Our Precision Blown Film Extrusion Dies:

  • Minimal Thickness Variation: Achieve outstanding film consistency without the need for additional gauge control.

  • Higher Production Rates: Reduce downtime and amplify production efficiency with our advanced die design.

  • Optimized Temperature Control: Central pin design integrates internal heaters for precise temperature management and faster heating times.

  • Low Maintenance: Our die minimizes leakage and reduces maintenance issues for long-lasting reliability.

  • Multi-Material Processing: Capable of processing multiple materials with different melt temperatures and properties in adjacent layers.

  • Easy Handling: Simplified maintenance and easy assembly/disassembly for faster changeovers.

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Experience the next level of precision and efficiency with our blown film extrusion dies, engineered to meet the demands of modern polymer processing.​

Flat Plate Blown Film
Flat Plate Blown Fil Die as assembled

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Split Flow Channels

The flow splitting channels, located between the top and middle plate, direct circulating polymer from the die entrance location to each spiral. Polymer flow follows round cross-section split flow passages to the spiral dispersion zone which avoids dead zones and hang-up locations creating precise channel lengths for each individual spiral.

Flat Plate Split Flow Channel

How It Works

Flat Plate Distribution Design

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Outstanding Minimal Thickness Variation Without Additional Gauge Control

The split flow design allows for the optimal thermal consistency and polymer dispersion and improves mixing in the spiral distribution zone; which is located between the second and third plates. Once the polymer flows across the spiral distribution zone toward the central pin; the polymer travels vertically upward to the next layer or die lip. Internal heaters in the central pin assist start-up and preserve process control.

03

Amplified Production Rates from Reduced Down Time

  • Streamlined Flow Channel Design Minimizes the Total Flow Path Length per Layer

  • Higher Efficiency Material Transition

  • Simplified and Fast Assembly and Disassembly

  • Quicker Purge Times and Reduction in Polymer Residence Time

  • Reduced Time for Color Change Overs

Flat Plate Multi-Layer Cross Section

04

Low Leakage and Maintenance Issues

  • Eliminating Port Holes

  • Removing Slip-Fit Components

  • Incorporating Tight Sealing Surfaces on Flat Faces

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Flat Plate Multi-Layer Stack

Advantages

  • Longer Production Runs

  • Less Down Time for Maintenance

  • Increased Production Rates

  • More Consistent Film Gauge

  • Easier Handling

  • Fewer Scheduled Maintenance Stops

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