Polyethylene terephthalate (PET) was patented in 1941 by John Rx Whinfield and James Tennant Dickson in Manchester, England. The production method is based on esterification of ethylene glycol and terephthalic acid or on polycondensation of those products. Thanks to its specific crystalline structure, ensuring its solidity, durability and transparency, PET quickly gained popularity, introduced by some of the leading European polymer manufacturers.
PET has extremely good mechanical, thermal and chemical properties. More importantly, the material is non-toxic and environmentally safe, which makes it suitable packaging for food and pharmaceutical products.
In result of the combination of structural durability and crystalline transparency, PET has a wide range of uses in various types of packaging. The material is most valued for its barrier properties: it is resistant to UV rays, low temperatures, acids and alcohol.
Types of PET packaging:
- Food industry purposes (salads, vegetables and fruits, meat, processed meats and sausages, fish, dairy products, candies and sweets, baked goods, cold beverages, etc.)
- General industry purposes (electronic components, cosmetics, cleaning products, kids’ toys, souvenirs, etc.)
Types of PET films manufactured by modern high-tech extrusion machines:
- Transparent or coloured (by client’s individual choice)
- By type and number of layers:
- barrier foil: (PET/PE; PET/PE/EVOH/PE)
- By ingredients and further processing:
- Containing optical clarifiers
- Master batches
- Antistatic ingredients
- Coated with silicone
- By thickness and size:
- Thickness: 0.18 – 1.2 mm.
- Width: 250 – 1100 mm.
- According to center’s diameter – 3˝/76mm or 6˝/152 mm.
PET packaging are visually appealing, convenient and safe, providing even more advantages: excellent physical and mechanical properties such as ultimate tensile strength, shock and deformation resistance, elastic modulus and solidity ensure exquisite strength and durability of containers’ shape in the process of filling, transportation, shelf life and consumption by the end user, thus reducing manufacturers’ and customers’ losses.
Our top novelty – PET yogurt cup is marked with several strong advantages:
- It is crack-resistant and stable during the filling and packing process
- Outstanding barrier properties, due to its low gas permeability, ensuring longer shelf life of the products, while reducing the necessity of adding preservatives, stabilizers and other additives. That is a valuable feature regarding dairy products which usually have extremely short shelf life.
Due to its ultimate barrier properties, PET cups are ideal for packaging of dairy and lactic acid products intended for long-distance transportation, for large supermarket chains and even for export.
- Increased resistance to fats
- Extremely low in terms of energy-intensive production, resulting from a lower heat transfer coefficient (lower thermoforming temperature, compared to PS and PP)
- 100% recyclable material giving an opportunity to be utilized in recycling plants all over the world, thus maximizing its environment-friendly value.
- Shelf appeal – the cup has beautiful gloss, increasing visual perception of colour and print
- Crystal transparency of clear products (comparable to glass)
- Hermetic seal with aluminum lid, ensuring also easy opening.