Heat transfer from plastic film heated by thermal radiation

✍ Scribed by Akio Koizuka; Masahide Miyamoto

• Book ID: 102256776
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 316 KB
• Volume: 34
• Category: Article
• ISSN: 1099-2871
• DOI: 10.1002/htj.20059

✦ Synopsis

The heat transfer characteristics of a plastic film were experimentally studied using a two-dimensional plane model apparatus of a double bubble tubular blown film process, which is one of the most important methods of polymer processing to produce a biaxially oriented film. In the model apparatus, a polyethylene film was heated by infrared heaters and cooled by plane air jets. The radiation absorptivity of the film was estimated on the basis of the temperature and irradiation measurements of the film that was cooled by natural convection, i.e., without the air jets. The convective heat transfer coefficient on the film cooled by the air jets was evaluated using the estimated absorptivity of the film.