Results 241 to 250 of about 2,049 (283)

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

Some of the next articles are maybe not open access.

Related searches:

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

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

Blown Films and Ribbons Extrusion

, 2013
This chapter covers various aspects of polymer materials and/or their applications in specific end-products. The chapter includes, first, a general description of blown film and ribbon extrusion, including the most important parameters that need to be ...
Jorge R Robledo-Ortíz, Daniel E Ramírez-Arreola, Denis Rodrigue   +2 more
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

Foam Extrusion of Polystyrene Blown with HFC-134a

Cellular Polymers, 2002
There is much interest in developing industrial processes to manufacture extruded polystyrene foam that do not involve ozone depleting blowing agents. A popular alternate candidate is HFC-134a. It has a zero ozone depletion factor and is nearer in chemical structure to standard blowing agents (CFC-22 and HCFC-142b) than carbon dioxide.
Richard Gendron, Michel Huneault, Jacques Tatibouët, Caroline Vachon   +3 more
openaire   +1 more source

Blown Film Extrusion Optimization-Control and Screws

Journal of Plastic Film & Sheeting, 1991
On-line film gauging, gravimetric feeding, innovations in blown film dies and wind-up equipment, and improved data handling have made pos sible the production of blown film to higher quality standards. However, ade quate cost control and effective material utilization will require even greater uniformity of the process and property performance of the ...
E.W. Veazey, N. Barrera
openaire   +1 more source