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Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene . Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar .
Polyethylene – The most common plastic film is made of one of the varieties of polyethylene: low-density polyethylene, medium-density polyethylene, high-density polyethylene, or linear low-density polyethylene. Polypropylene – Polypropylene can be made a cast film, biaxially oriented film (BOPP), or as a uniaxially oriented film.
Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
The Reserve Bank of India introduced plastic/polymer currency note of ₹ 10 on a field trial basis in five cities in India. [68] Mauritius: 22 August 2013 The Bank of Mauritius issued new 25-, 50-, and 500-rupee polymer banknotes which will circulate in parallel with the existing paper notes of the same denominations. The new polymer notes ...
Polypropylene is commonly used in car bumpers, interior trims, and other components [19] where TiO₂ is added to improve the UV stability of the plastic, ensuring that parts do not degrade or lose color when exposed to sunlight over time. [20] Polyethylene films are widely used in agriculture for greenhouses, mulching, and silage wraps. [21]
BOPP: a biaxially oriented polypropylene (PP) film Other polyolefins : typically made out of high density polyethylene (HDPE), low density polyethylene (LDPE), PP plastic resins Plastic films in general are made out of plastic resins by a plastics extrusion process and can be made out of one single type of plastic material, a blend of different ...
Tenterframe technology is used to produce a variety of “heat-set” products, with biaxially oriented polypropylene (BOPP) being the most common (heat-setting is a process whereby a film is reheated in a constrained state such that the shrink properties are destroyed).
Synthetic paper is usually made out of either biaxially oriented polypropylene (BOPP) or high-density polyethylene (HDPE). The applications include paper for labels (thus that can bond with ink) and non-label paper. The products can be highly water resistant, flexible, durable and tear resistant. [1]