PET material in-depth analysis ~ must read dry goods!

Dive into our comprehensive analysis of PET (Polyethylene Terephthalate) material, exploring its unique properties, versatile applications, and significant environmental impact. Learn how PET is transforming packaging solutions and promoting sustainable practices. Stay updated on the latest trends and innovations in the PET industry, perfect for both professionals and eco-conscious consumers.

PET polyethylene terephthalate this polycondensate is mainly used in food packaging films and textile fibers and other applications. Now, its use as a packaging material is increasing, not only for soda drink bottles, but also for non-crystalline PET (APET), crystalline PET (CPET) cans and plates. In the last five years, engineering grade PET and co-polyester, as new polymer products, have been used in engineering and specialty packaging materials, respectively.

The successful use of PET in fountain drink packaging materials is due to its toughness and clarity, orientation capability, excellent economic value, and the development of high speed bottle processing technology.PET beverage cans are lightweight, shatter-resistant, reusable, and have very good airtight properties. A filled 2-liter PET beverage bottle is 24% lighter than a similar glass bottle; an empty bottle weighs 1/10 the weight of a glass bottle of the same model. making it a labor, energy and cost saver in all stages of the process from producer to consumer.

Chemistry and performance: PET for beverage bottles is produced from terephthalic acid (TPA) derived from the oxidation of paraxylene. Terephthalic acid is purified or reacted with methanol to produce dimethyl terephthalate (DMT), or further oxidized to produce pure terephthalic acid (PTA).The other basic raw material for PET is ethane, which is reacted to ethylene glycol (EG).PET is produced as a condensate by the reaction of polymerization of DMT (or PTA) and EG in successive melt states, which is followed by solid-state polymerization to obtain large grain size and final molecular weight, inherent viscosity. This solid-state process also results in polymers with sufficiently low ethanol content.

Typical commercial PET resins melt at about 480F, but highly crystalline PET has a melting point of about 520F.
Oriented crystalline PET has excellent strength. toughness and transparency, and is resistant to weak acids and bases and many solvents.

Special Grades: Stretch Blow Molding Grade PET is available in solid, green, and yellowish PET. reactors colored polymers do not require recombination which adversely affects physical properties and improves color uniformity. A variety of pure resins with different intrinsic viscosities are available. the slow crystallization rate of PET copolymers allows for the production of high quality bottles for soft drinks under a wide range of processing conditions. An extrusion blow moldable polymer is also available.

This material combines excellent melt strength with a slow crystallization rate and can be easily processed on suitable extrusion blow molding equipment. A variety of reinforced, flame retardant and other specialty polymers are continually being introduced or improved to meet new applications.

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