Polyethylene terephthalate food-packaging

ILSl Europe Report Series Packaging Materials 1. Polyethylene terephthalate (PET) for food packaging applications 2. Polystyrene for food packaging applications 3. Polypropylene for food packaging applications 4. Polyethylene for food packaging applications 5. Polyvinyl chloride (PVC) for food packaging applications. 

Many polymers are used in barrier applications, either to keep contents in or contaminants out. Food packaging is an excellent example of such usage. Plastic films and containers of many types are used to package food. Blow moldedbottles often contain numerous layers, each of which provides specific benefits. Polyethylene layers are excellent water barriers, polyvinyl alcohol is a good oxygen barrier, and polyethylene terephthalate impedes the diffusion of carbon dioxide from carbonated drinks. Other barrier applications include toothpaste tubes, diaper backsheets, tarpaulins, and geomembranes, which are used to line containment ponds and landfill pits. 

Polyethylene terephthalate is injection blow molded to make water and carbonated drink bottles, and other liquid food packages. High stiffness, excellent clarity, and good resistance to carbon dioxide permeation are the principal attributes of these bottles. We carefully control molding conditions to promote transparency and surface gloss, which are prized for food... 

Polyesters, which are a class of engineering thermoplastics, are found in a wide variety of applications including carbonated drink bottles, fibers for synthetic fabrics, thin films for photographic films and food packaging, injection molded automotive parts, and housings for small appliances. In this chapter, we svill explore the synthesis of this class of polymers. We will also look at the typical properties and end uses for the most common of these resins, polyethylene terephthalate and polybutylene terephthalate, which are commonly known as PET and PBT, respectively. 

Polyethylene terephthalate is often used to produce films for food packaging. What properties of this material are critical when designing food packaging ... 

With the exception of ethylene vinyl acetate added in the 1980 s, the list of materials and polymers approved as packaging for food irradiated products has remained static for decades. This article supplies details of the approved list, which includes such polymers as polyethylene terephthalate and polyvinyl chloride. The article provides an update on the latest proactive move to expand the list of packaging materials and polymers approved for the irradiation of foods. The expanded list would include ethylene vinyl alcohol, PVC film, ionomers, nylon 66, 6/12 and copolyesters among others. 

Franz, R., Recycled Polyethylene terephthalate) for direct food contact application, FDA submission CTS 71903, Petitioner Buhler A. G, Representative Laboratory Fraunhofer Institute for Process Engineering and Packaging, Freising, Germany, Petition to the FDA, 2000. 

Monomers commonly used in the manufacture of polyethylene terephthalate (PET) and copolyesters for food packaging. 

Begley, T.H., Dennison, J.L. and Hollifield, H.C. (1990). Migration into food of polyethylene terephthalate (PET) cyclic oligomers from PET microwave susceptor packaging. Food Addit. Contain., 7, 6, 797-803. 

Franz, R., Mauer, A., and Welle, F. (2004). European survey on post-consumer polyethylene terephthalate) (PET) materials to determine contamination levels and maximum consumer exposure from food packages made from recycled PET. Food Addit. Contam. 21, 265-286. 

Papachristou, C., Badeka, A., Chouliara, I., Kondyli, E., Kourtis, L., and Kontominas, M. G. (2006a). Evaluation of polyethylene terephthalate as a packaging material for premium quality whole pasteurized milk in Greece. Part II. Storage under fluorescent light. Eur. Food Res. Technol. 224, 237-247. 

Suloff, E. C. (2001). Modeling the adsorption of aldehydes and ketones to novel polyethylene terephthalate) blends by inverse gas chromatography to develop an improved polymer for food packaging. Ph.D. Dissertation, Virginia Tech, Blacksburg. 

R. FRANZ, F. BAYER, F. WELLE, Guidance and criteria for safe recycling of post consumer polyethylene terephthalate (PET) into new food packaging applications, EU Report 21155, ISBN 92-894-6776-2, Office for Official Publications of the European Communities, Luxembourg, 2004. 

R. FRANZ, Programme on the recyclability of food packaging materials with respect to food safety considerations - Polyethylene terephthalate (PET), paper board and plastics covered by functional barriers. Food Additives and Contaminants, 2002, 19(snpplement), 93-110. 

Begley, T.H. HoUifield, H.C. Migration of dibenzoate plasticizers and polyethylene terephthalate cyclic oligomers from microwave susceptor packaging into food-simulating liquids and foods. J. Food Prot. 1990, 53, 1062-1066. 

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