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BoPET (biaxially oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, [1] chemical stability, [1] dimensional stability, [2] transparency [1] reflectivity, and electrical insulation. [1]
Biaxially oriented PET (BOPET) film (including brands like "Mylar") can be aluminized by evaporating a thin film of metal onto it to reduce its permeability, and to make it reflective and opaque . These properties are useful in many applications, including flexible food packaging and thermal insulation (such as space blankets ).
Several constructions for meat absorbent pads have been developed. [5] [6] The absorbent pads are typically made from materials such as cellulose, silica gel, sorbent nonwoven fabric, superabsorbent polymers, or other absorptive materials that can hold a significant amount of liquid relative to their size.
Polyplex Corporation Ltd. is an Indian multinational company which produces biaxially oriented polyester (BoPET) film for packaging, electrical and various industrial applications. [3] [self-published source?] The company is a major exporter of PET film to the United States, Europe, Southeast Asia, South America and Australia.
"Biaxially oriented PET film (BOPET) is manufactured with a film of the molten polymer being extruded onto a chill roll, which quenches it into the amorphous state. Biaxial orientation, then, occurs through a drawing process which can be either simultaneous or sequential. The most common way of producing BOPET is the sequential process.
Some exceptions like BOPET-film of low thickness, special applications like optical film or yarns through FDY-spinning at > 6000 m/min, microfilaments, and micro-fibers are produced from virgin polyester only.
About 50 billion single-use plastic water bottles made of polyethylene terephthalate (PET) are produced in the United States each year, and most are discarded. [5] According to the National Association for PET Container Resources, the recycling rate for PET has held steady at 31% since 2013.
[citation needed] The chocolate bar can now commonly be found in a single-ply inner metallized boPET polyester film, typical of convenience foods packaging. [citation needed] As of 2023, Crunch is offered in the US in a variety of sizes including Classic (1.55oz.) which is now a segmented bar, Fun Size, Minis and Giant (4.4oz.). [7]