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Industrial Production of Food Plastic Packaging and the Use of Irradiation for Modifying Some Film Properties. Chapter 5

Abstract

The four main industrial processes needed to produce a plastic packaging structure are: cast extrusion, blown extrusion, injection moulding, and blown moulding. Since one polymer may not offer all the protection and marketing properties required for a specific food product, multilayer films can be produced. Each layer will be composed of a different polymer and additives to meet all the requirements. Ionizing radiation plays an important role in the packaging industry, especially in the heat shrinkable barrier film production process. In this process, irradiating the film structure is aimed mostly at the crosslinking of the polyolefin. Cross-linked polyolefin-based films can withstand higher stretching rates, be better stabilized, and will both have a high degree of shrinkage and higher shrinking forces. This leads to very thin structures with very well balanced cost-benefit ratios and better final packaging presentation. The use of ionizing radiation for cross-linking polymers is one of the most successful cases of irradiation used by the industry. Besides cross-linking, scission may also occur in the polymeric structure, and it may liberate toxic or unwanted substances that can be transferred to the food. Therefore, irradiated food packaging materials should be thoroughly assessed according to active legislation to guarantee that it  More>>
Authors:
Ortiz, A. V.; Moura, E. A.B.,; [1]  Nuclear and Energy National Commission – CNEN, Rio de Janeiro (Brazil)]
  1. Nuclear and Energy Research Institute - IPEN - São Paulo (Brazil)
Publication Date:
Jul 15, 2014
Product Type:
Conference
Report Number:
IAEA-TECDOC-1745
Resource Relation:
Conference: Technical Meeting on Radiation Processed Materials in Products from Polymers for Agricultural Applications, Vienna (Austria), 8-12 Jul 2013; Other Information: 12 refs., 6 figs., 1 tab.; Related Information: In: Radiation Processed Materials in Products from Polymers for Agricultural Applications| 222 p.
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS; CROSS-LINKING; EXTRUSION; FILMS; FOOD; INDUSTRY; IONIZING RADIATIONS; IRRADIATION; PLASTICS; SAFETY
OSTI ID:
22304749
Research Organizations:
International Atomic Energy Agency, Radioisotope Products and Radiation Technology Section,Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISBN 978-92-0-106414-1; ISSN 1011-4289; TRN: XA14M6838010921
Availability:
Available from INIS in electronic form. Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/TE-1745_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 35-42
Announcement Date:
Jan 31, 2015

Citation Formats

Ortiz, A. V., Moura, E. A.B.,, and Nuclear and Energy National Commission – CNEN, Rio de Janeiro (Brazil)]. Industrial Production of Food Plastic Packaging and the Use of Irradiation for Modifying Some Film Properties. Chapter 5. IAEA: N. p., 2014. Web.
Ortiz, A. V., Moura, E. A.B.,, & Nuclear and Energy National Commission – CNEN, Rio de Janeiro (Brazil)]. Industrial Production of Food Plastic Packaging and the Use of Irradiation for Modifying Some Film Properties. Chapter 5. IAEA.
Ortiz, A. V., Moura, E. A.B.,, and Nuclear and Energy National Commission – CNEN, Rio de Janeiro (Brazil)]. 2014. "Industrial Production of Food Plastic Packaging and the Use of Irradiation for Modifying Some Film Properties. Chapter 5." IAEA.
@misc{etde_22304749,
title = {Industrial Production of Food Plastic Packaging and the Use of Irradiation for Modifying Some Film Properties. Chapter 5}
author = {Ortiz, A. V., Moura, E. A.B.,, and Nuclear and Energy National Commission – CNEN, Rio de Janeiro (Brazil)]}
abstractNote = {The four main industrial processes needed to produce a plastic packaging structure are: cast extrusion, blown extrusion, injection moulding, and blown moulding. Since one polymer may not offer all the protection and marketing properties required for a specific food product, multilayer films can be produced. Each layer will be composed of a different polymer and additives to meet all the requirements. Ionizing radiation plays an important role in the packaging industry, especially in the heat shrinkable barrier film production process. In this process, irradiating the film structure is aimed mostly at the crosslinking of the polyolefin. Cross-linked polyolefin-based films can withstand higher stretching rates, be better stabilized, and will both have a high degree of shrinkage and higher shrinking forces. This leads to very thin structures with very well balanced cost-benefit ratios and better final packaging presentation. The use of ionizing radiation for cross-linking polymers is one of the most successful cases of irradiation used by the industry. Besides cross-linking, scission may also occur in the polymeric structure, and it may liberate toxic or unwanted substances that can be transferred to the food. Therefore, irradiated food packaging materials should be thoroughly assessed according to active legislation to guarantee that it will not harm the consumer’s health either in the short or the long term. (author)}
place = {IAEA}
year = {2014}
month = {Jul}
}