Results 201 to 210 of about 1,257 (242)

Investigation into the Cooling Characteristics of Blown Film Extrusion Lines

Journal of Reinforced Plastics and Composites, 1999
To analyze and to optimize the cooling conditions at blown film extrusion lines, the cooling air stream has been determined by using a hot wire anemometer. The velocity and temperature profiles of the air stream and the air pressure along the bubble have been measured.
Jochen Hauck, Walter Michaeli
exaly   +3 more sources

Blown Film Extrusion of LLDPE/LDPE Blends

Journal of Reinforced Plastics and Composites, 1999
An experimental study was carried out to investigate the effect of LLDPE/LDPE blend compositions on the physical properties of blown films and processing properties during extrusion. Spiral mandrel die analysis was also performed by FAN method and its results were compared with measured die pressure. Positive synergy effects of LDPE addition into LLDPE
Jang-Hoon Oh
openaire   +2 more sources

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Experimental Research on the Blown Film Extrusion Process of Polyethylene

Journal of Plastic Film and Sheeting, 2001
Experimental studies of the blown film extrusion process presented in this paper aim at examining the influence of selected properties of constructional elements of intensive shearing and mixing on the characteristic of this process. The analysis concerned especially the influence of the thickness of the research gap between the inner surface of ...
Janusz W Sikora
exaly   +2 more sources

Production and characterization of sodium caseinate edible films made by blown-film extrusion

Journal of Food Engineering, 2014
Caseinates are considered as an interesting raw material for making biodegradable and water-soluble packaging. However, the development of plasticized caseinates, especially sodium caseinate, has mainly focused on the formation of films obtained by solution casting.
Imane Belyamani, Frédéric Prochàzka
exaly   +3 more sources

Fabrication of PBAT/polyethylene blends mulching film via blown film extrusion process

Korea Australia Rheology Journal, 2020
To 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.
Seung Joon Park
exaly   +2 more sources

A thin-shell two-phase microstructural model for blown film extrusion

Journal of Rheology, 2010
A 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.
Richard D Braatz, Braatz Richard D
exaly   +2 more sources

Effect of Rheological Strain Hardening on Extrusion Blown Film of Polyvinylidene Fluoride

Journal of Plastic Film and Sheeting, 2007
In 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.
Stephan Moysés
exaly   +2 more sources

Dynamic modeling of blown‐film extrusion

Polymer Engineering & Science, 2003
Abstract Past dynamic studies of blown‐film extrusion have been confined to the stability analysis of the linearized equations. The full set of nonlinear equations comprises a system of partial differential and algebraic equations with boundary conditions that vary from author to author.
J. Carl Pirkle, Richard D. Braatz
openaire   +1 more source

Stability of a Blown Film Extrusion Process

International Polymer Processing, 1999
Abstract The stability of a blown film extrusion process has been investigated using a simple isothermal Newtonian model. Although the Newtonian model may be an oversimplification for polymer melts, it serves as a reasonable first approximation for linear polymers (e.g., linear low density polyethylene) in extensional flow situations ...
K.-S. Yoon, C.-W. Park
openaire   +1 more source