What is uniaxial orientation?

Uniaxially oriented polymers are characterized by high tensile strength combined with the capacity for reversible elongation in the direction of the axis of orientation.

What does biaxially oriented mean?

Biaxial orientation is a process whereby a plastic film or sheet is stretched in such a way that the polymeric chains are oriented parallel to the plane of the film.

What is oriented plastic?

The process of orienting plastics involves modifying the structure of polymer films like polypropylene (PP), polyester (PET), and polyethylene (PE) by heating and mechanically stretching them with specialized orientation machines.

Is PET biaxially oriented?

Polyethylene Terephthalate (PET) Film Biaxially oriented PET film (often known by one of its trade names, “Mylar”) can be aluminized by evaporating a thin film of metal onto it to reduce its permeability, and to make it reflective and opaque (MPET).

What is biaxially oriented polypropylene?

Polypropylene Films Biaxially oriented polypropylene (BOPP) film is film stretched in both machine and transverse directions, producing molecular chain orientation in two directions.

What is BOPP and BOPET?

BOPP films (Biaxially Oriented Polypropylene Films) and BOPET films (Biaxially Oriented polyethylene terephthalate) are the polyester films that are majorly used for packaging, labeling, and lamination. These films are majorly used in electrical and electronics, pharmaceutical and medical and personal care.

What is the difference between PP and BOPP?

PP stands for Polypropylene, OPP stands for Oriented Polypropylene, and BOPP stands for Biaxially Oriented Polypropylene. They differ in the style of their fabrication. Polypropylene, also called are polypropene is a semi-crystalline thermoplastic polymer. It has high impact resistance and is strong and tough.

What is TD and MD?

MD and TD are the machine and transverse direction orientation. (TD is also called the crossmachine direction and is designated as CD.)

What are oriented films?

Today, oriented plastic films are produced industrially in large quantities. As such, the majority are biaxially oriented, that is, films are stretched in both directions, which is understandable when taking the improvement in characteristics into consideration [1].