Development of High Quality LLDPE and Optimised Processing for Film Blowing
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B. Debbaut
Abstract
The majority of LLDPE resins is processed via blown film extrusion techniques for various applications in the industrial and consumer packaging business. These LLDPE resins all have, independent of the molecular structure differences, the same intrinsic limitation in blown film extrusion processing. These limitations are: low output, high sensitivity to surface defects (stripes, sharkskin), high machine power requirement, need for large die gaps, lower bubble stability, and low melt strength. As a consequence, the more versatile—manufacturing and property wise—LLDPE resins are not used to their full potential. The industrial objective is therefore threefold:
develop a new LLDPE resin overcoming the above limitations,
develop a new flexible blown film extrusion line tailored to the new generation of LLDPE resins,
develop an efficient 3-D finite element simulation code to assist in the resin and blown film extrusion line development.
© 1998, Carl Hanser Verlag, Munich
Articles in the same Issue
- Contents
- Contents
- Editorial
- Third in a Series: Pioneers of Polymer Processing Charles Hancock — The First Thermoplastics Processing Innovator
- Internal Mixers
- Finite Element Analysis of Mixing in Partially Filled Twin Blade Internal Mixers
- Screw Extrusion
- Use of Dye Containing Polymeric Microcapsules for Determining Shear Stresses
- Modeling Flow and Fusion of Mixtures/Blends of Polymer Pellets and a Low Viscosity Phase in a Modular Co-rotating Twin Screw Extruder
- Fiber and Film
- Development of High Quality LLDPE and Optimised Processing for Film Blowing
- Molding
- Impregnating Flow of a Rheokinetic Liquid
- Morphology of Injection Molded Polyacetal during Filling
- Crystal Orientation in Injection Moldings of Talc-filled Polyolefins
- Structure and Properties of Injection Moldings of β-Crystal Nucleator-added PP
- Thermal Effects in the Numerical Simulation of the Thermoforming of Multilayered Polymer Sheets
- Measurement and Prediction of Anisotropy in Injection Moulded PP Products
- Rapid Communication
- Gas Penetrations in Symmetrical Tapping Ribs during Gas-Assisted Injection Molding
Articles in the same Issue
- Contents
- Contents
- Editorial
- Third in a Series: Pioneers of Polymer Processing Charles Hancock — The First Thermoplastics Processing Innovator
- Internal Mixers
- Finite Element Analysis of Mixing in Partially Filled Twin Blade Internal Mixers
- Screw Extrusion
- Use of Dye Containing Polymeric Microcapsules for Determining Shear Stresses
- Modeling Flow and Fusion of Mixtures/Blends of Polymer Pellets and a Low Viscosity Phase in a Modular Co-rotating Twin Screw Extruder
- Fiber and Film
- Development of High Quality LLDPE and Optimised Processing for Film Blowing
- Molding
- Impregnating Flow of a Rheokinetic Liquid
- Morphology of Injection Molded Polyacetal during Filling
- Crystal Orientation in Injection Moldings of Talc-filled Polyolefins
- Structure and Properties of Injection Moldings of β-Crystal Nucleator-added PP
- Thermal Effects in the Numerical Simulation of the Thermoforming of Multilayered Polymer Sheets
- Measurement and Prediction of Anisotropy in Injection Moulded PP Products
- Rapid Communication
- Gas Penetrations in Symmetrical Tapping Ribs during Gas-Assisted Injection Molding
