Results 191 to 200 of about 1,532,171 (223)
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Lldpe Resins for High Output Blown Film Extrusion
Journal of Plastic Film & Sheeting, 1991We take a closer look at the output rate improvements which can be achieved as a result of the improved melt strength of 0.5 MI resins.
D.L. Cooke, M. Koyich
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Fabrication of PBAT/polyethylene blends mulching film via blown film extrusion process
Korea-Australia Rheology Journal, 2020To extend the period of decomposition and property degradation of polybutylene adipate terephthalate (PBAT) mulching film for long-term use, PBAT was compounded with polyethylene mixture (LDPE: LLDPE = 15:85), calcium carbonate, and illite. PBAT mulching films were prepared using a blown film extrusion process with 80 mm diameter blowing die.
Jung Gu Han, Seung Joon Park
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Photonic Crystals of Oblate Spheroids by Blown Film Extrusion of Prefabricated Colloidal Crystals
Langmuir, 2009Three-dimensional photonic crystals (or photonic band gap materials) have been fabricated with oblate spheroids as the photonic building block. The nonspherical shape was realized by the blown film extrusion process of a prefabricated colloidal photonic crystal of spherical polystyrene particles, with its voids infiltrated by polyvinyl alcohol.
Tao, Ding +4 more
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The Use of Deformation Rates in the Scale-Up of Polyethylene Blown Film Extrusion
Journal of Plastic Film & Sheeting, 1992It is often desirable to scale up a process from a lab scale system, where most research occurs, to a large scale industrial system with minimal ex penses of time and money. This work will show that under appropriate process ing conditions, blown films can be produced under similar strains that yield comparable crystalline morphologies and therefore ...
David M. Simpson, Ian R. Harrison
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The Use of Metallocene Catalysed Polyethylene as a Blend Material in Blown Film Extrusion
Developments in Chemical Engineering and Mineral Processing, 1999AbstractMetallocene catalysed polyethylenes are the latest addition to the polyethylene family and are reported to have superior mechanical properties over conventional polyethylenes. This paper sought to investigate the effect of blending these materials with conventional low density polyethylene for use in thin films, suitable as packaging materials ...
C. M. Beagan +2 more
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A Novel Processing Aid for Greater Flexibility in Blown Film Extrusion
Journal of Plastic Film & Sheeting, 1987The high melt viscosity of linear low density polyethylene (LLDPE) presents several problems, particularly melt fracture, when this resin is processed on blown film equipment which has been designed for use with high pressure, low density polyethylene (LDPE) resin.
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Effect of Rheological Strain Hardening on Extrusion Blown Film of Polyvinylidene Fluoride
Journal of Plastic Film and Sheeting, 2007In this work the effect of strain hardening on poly-vinylidene fluoride (PVDF) extrusion blown film is investigated. Controlled long chain branching is introduced via a multi-functional initiator to produce two PVDF samples with different molecular weight and chain architecture.
Stephane Moyses
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Journal of Applied Polymer Science, 2008
AbstractBlown‐film modeling is useful to the flexible packaging industry for predicting process and bubble characteristics, such as freeze line height (FLH), bubble diameter, and film thickness. The use of a suitable rheological equation to describe material properties is critical in simulating the blown‐film process.
Khokan Kanti Majumder +3 more
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AbstractBlown‐film modeling is useful to the flexible packaging industry for predicting process and bubble characteristics, such as freeze line height (FLH), bubble diameter, and film thickness. The use of a suitable rheological equation to describe material properties is critical in simulating the blown‐film process.
Khokan Kanti Majumder +3 more
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Numerical optimization of a multi-jet cooling system for the blown film extrusion
AIP Conference Proceedings, 2015The limiting factor for every extrusion process is the cooling. For the blown film process, this task is usually done by means of a single or dual lip air ring. Prior work has shown that two major effects are responsible for a bad heat transfer. The first one is the interaction between the jet and the ambient air. It reduces the velocity of the jet and
Janas, Marius, Wortberg, Johannes
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A thin-shell two-phase microstructural model for blown film extrusion
Journal of Rheology, 2010A two-phase microstructural constitutive relation is combined with the thin-shell model for the simulation of blown film extrusion. This combination includes equations for momentum conservation, flow-enhanced crystallization, viscoelasticity, and bubble-tube cooling.
J. C. Pirkle, Richard D. Braatz
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