PACKAGING PLASTIC
Packaging Plastic: light and resistant
Polystyrene
Polystyrene, commonly known as polystyrene, is generally known as the material used to protect objects during transport (tertiary packaging). It was discovered in 1839 by Eduard Simon. Simon distilled an oily substance from the resin, which he called styrene. It is a plastic obtained from the processing of oil. Polystyrene is highly valued for its impermeability and since it is able to maintain the temperature of the food it contains, it is indeed an excellent insulation material. Polystyrene is used for the packaging of take-away foods such as ice cream and fresh foods over long distances (mozzarella, cakes). It is also used as an insulator in the construction of panels of various thicknesses.
In recent years, it has established itself in digital 3D modeling to create custom cases.
Polyethylene
Polyethylene is the most widely used plastic in the world. More than 40% of the plastics produced are polyethylene.
This famous plastic was discovered by coincidence in 1898 by the German Chemist Hans von Pechmann while heating Diazomethane; the first industrial synthesis was discovered in 1933. The main characteristics of this material are high corrosion resistance due to chemical substances, abrasion resistance, impact resistance, tightness, thermal insulation and flexibility. In the packaging industry it is used for the production of containers and bottles with cleaning agents and food, the internal coating of cardboard packaging (e.g. milk), food films, but also for the production of stretch films (which contain stretch films) and air films (Pluiriball) for packaging. Polyethylene is also used in the manufacture of toys, pipes for water and gas transport, garden furniture and prostheses for the medical sector.
PET (Polyethylene Terephthalate)
PET (Polyethylene Terephthalate) is part of the plastics family, it is a transparent resin available in different thicknesses and is mainly used for food storage. Compared to PVC, it is a recyclable plastic product. PET was invented in 1941 by John Rex Whinfield and James Tennant Dickson, and in 1973 PET plastic bottles were patented by chemist Nathaniel Wyeth. This material is very widely used and it is estimated that more than 13 million tonnes of plastic PET will be produced in one year. Polyethylene terephthalate is mainly used in the production of plastic beverage bottles. PET is a reusable material; the different types of PET are recycled together and reduced to powder. The powder is then cleaned and the paper and metal molecules are disposed of at this stage. The resulting powder is now ready to be converted into other items such as carpets, tapes, batteries, plastic containers and more. It is not possible to convert the powder into PET plastic bottles.
Polypropylen (PP)
Polypropylene, also known as PP, is a semi-crystalline, rigid and durable plastic material. PP is characterized by high chemical resistance, easy processing and good resistance to high temperatures. To make it clear: Polypropylene is the double plastic from which various types of everyday objects such as chairs, vases, dashboards, doormats, screens, etc. are made. Polypropylene was discovered in 1953 by the German Karl Ziegler and perfected the following year by Giulio Natta.
In the packaging industry it is used as secondary packaging, i.e. as a container containing other individually packaged products. For packaging it is a very resistant material, ideal for individual and exclusive designs, in the form of closed or semi-closed rigid cartons (which give an insight into the product).