Polyethylene Terephthalate (PET) Films: Overview-Features-Application

Over the past 3 decades, the ever-increasing media and public pressure as well as strictest legal norms and standards have forced most food and other edible items manufacturers to take the matters of packaging seriously. In the wake of the same, the manufacturers have not only taken note of the methodology they adopt for packaging but also the materials they use to pack food items. Achieving optimal safety is the ultimate aim of the food processing and manufacturing companies before the products are consumed. 

Meanwhile, a large number of technological advancements and innovations particularly in the field of synthetic resins and other materials have also eased the business of food producers concerning packaging. Based on the same, food producers are delivering products to their customers in the safest of conditions. In this overall scenario, the films used in the food packaging are one of the most crucial components at the front of technological innovation. 


Polyester or polyethylene terephthalate (PET): a concise overview 

Polyester or polyethylene terephthalate (PET), using which the corona treated PET film is manufactured, is a performance-packed and crystal clear thermoplastic. This type of premium plastic is manufactured using ethylene glycol and dimethyl terephthalate (DMT). When compared to other types of commonly available plastics, PET films are a feature-rich variant having the following characteristics and attributes:
  • PET films offer a higher level of tensile strength
  • They also offer unmatched dimensional stability
  • Low moisture absorption
  • Excellent retention of physical properties over a diversified temperature range
  • These films also have superior UV resistance
  • Excellent electrical properties
  • Good optical clarity
  • High gloss and the ability to act as a powerful gas barrier
Although PET films, made and supplied by the leading manufacturers and suppliers of aluminium foil replacement and corona treated PET film in India, come with moderate moisture barrier capabilities, they are considered to be ideal for high-quality printing and lamination. Almost all the high-performance plastic films and sheets are manufactured using PET film. It is because PET films offer a high melting point which in turn makes them perfectly suitable for all types of applications that call for high-temp sterilization. On the front of pricing also, PET films are costlier than PVC, PE, and PP variants and this is the reason they are also called specialty packaging films. 
Polyester or polyethylene terephthalate (PET) can be easily metalized by the packaging solutions providers which in turn brings forth enhanced gas barrier properties to meet the needs of a large number of applications in which the shelf life of the product matters a lot. Apart from the food packaging industry, PET films are also used in various industrial applications such as automotive and electric. One of the most striking aspects of PET Films is that they can be fully recycled and reprocessed to serve the purpose in a wide range of other applications. 
Not withstanding, unlike paper and several other cellulose products, PET films are not easily decomposable. However, there are a large number of innovative and technologically advanced additives available these days that can speed up the biodegradation of these films ensuring the least possible harm to the environment. All the leading manufacturers and suppliers of aluminium foil replacement and corona treated PET film in India use these additives without any effect on the packaging material. As for some other properties, these films can retain their physical properties in temperatures ranging from 70°C to 100°C. Despite coming at a higher price, these films are used in all those demanding applications that call for strength along with unmatched dimensional stability. 

A look at the corona treatment

Over the past few years, the demand for corona treated PET film across the globe has also increased. The corona treatment carried out in a sophisticated manufacturing facility makes the substrate highly receptive to direct surface printing. Corona treatment is considered a very cost-effective methodology that adheres to both the inks and substrate. 

Applications of Polyethylene Terephthalate (PET) Film

Polyester or polyethylene terephthalate (PET) is considered to be excellent water and moisture barrier material. This is the reason it is widely used in different types of plastic containers, particularly for the packaging of soft drinks. For some specialty containers that are used for beer containment, polyester or polyethylene terephthalate (PET) sandwiches an additional polyvinyl alcohol (PVOH) layer that drastically minimizes its oxygen permeability. Some of the major items PET films are used for include the following:

  • Meat and food
  • Vegetables and fruits
  • Rice and beans
  • Flour and nuts
  • Dry fruits and candy
  • Biscuit, coin, and collectibles
  • Electronic products and tools
  • Tea, medicines, cosmetics, etc

The stature of the Indian manufacturers and suppliers

Over the past 2 decades, Indian packaging solutions manufacturers have proved their mettle not only in India but also abroad by producing world-class packaging solutions. Some of them include BOPP Films, PET Films, Metalized Films, Coated Films, CPP Films, Thermal Films, Non-Tearable Paper (NTR), and Medical X-Ray Films, aluminium foil replacement, and corona treated PET film. These packaging solutions are well-known for the following characteristics:

  • High-class safety
  • Nontoxic features
  • Outstanding vacuum effect
  • High level of transparency
  • Tensile strength and durability
  • Easy to heat sealing
Some of the top manufacturers and suppliers of aluminium foil replacement, and corona treated PET film have also got the unmatched ability to provide their customers with fully customized solutions exactly as per their requirements. Be it Flexible Packaging, Tape & Textile, Lidding, Print Lamination, Industrial applications, Labels, or Overwrap, Indian manufacturers score heavily over their global rivals.

Concluding Remarks 

Jindal Poly is a global leader in the development and manufacture of specialty biaxially oriented polypropylene (BOPP or OPP) films. It is one of the top manufacturers and suppliers of aluminium foil replacement, and corona treated PET film in India. The company boasts of a rich product portfolio that ranges across multi-layer clear, white opaque and metalized films along with water-based coated films. While the products are deployed in a comprehensive range of end-use applications, the main market segments remain Flexible Packaging and Labeling. The company’s manufacturing plant at Nasik, Maharashtra, India is the world's largest facility for the production of BOPET and BOPP films.