Strength of heat seal measured before the seal is cooled, which is very important for high-speed packaging operations.

The direction perpendicular to the machine direction.

Orientation of plastic films in both machine and cross machine (transverse) directions by stretching. Biaxial stretched films are generally well balanced in both directions and much stronger in terms [..]

The tendency for certain materials to have properties imparted by the flow direction through a machine.

Linear low density polyethylene. Tougher than LDPE and has better heat-seal strength, but has higher haze.

Polyvinylidene chloride. A very good oxygen and water vapor barrier, but not extricable, therefore it is found primarily as a coating to improve barrier properties of other plastic films, (such as OPP [..]

Trade name for a polychlorotrifluoroethylene (PCTFE) polymer. The polymer has outstanding moisture and excellent oxygen barrier properties, as well as being clear, rigid, and relatively easy to thermo [..]

A monomer with the structure (CH = CHCN). Its copolymers have good gas barrier and chemical resistance properties. Also known as trade name Barex.

The distance from the die lips of a polymer-melt extruder and the chill roll.

Engraved ink metering roll used in flexo presses to provide a controlled film of ink to the printing plates which print onto the substrate.