Pantone Matching System
(PMS)

The Pantone Matching System is the universally accepted color definition system. Colors can be blended or individually specified to match a specified Pantone reference color exactly.

Pasteurization

A process to extend food product shelf live by using heat.

PE

Polyethylene. may refer to low density polyethylene (LDPE) & linear low density polyethylene (LLDPE)

PET

Polyester (Polyethylene Terephtalate). Tough, temperature resistant polymer. Biaxially oriented PET film is used in laminates for packaging, where it providesstrength, stiffness and temperature resistance. It is usually combined with other films for heat sealability and improved barrier properties.

PLA

Polylactic acid (PLA) is a biodegradable, thermoplastic, found converted into a variety of aliphatic polyesters derived from lactic acid which in turn can be made by fermentation of various agricultural products such as corn starch, once made from dairy products.

Ply

A single layer, as would be found, for example, in a multilayer laminate.

PP

Polypropylene. Has much higher melting point, thus better temperature resistance than PE. Two types of PP films are used for packaging: cast, (see CPP) and oriented (see OPP).

Puncture Resistance

Performed on an Elmendorf puncture/tear testing machine, and uses a 4″ diameter sample of film to measure its resistance to puncture or impact (Results are in force grams/diameter (4″).

PVC

Polyvinyl chloride. A tough, stiff, very clear film. The oriented version is used mainly for shrink film applications.

PVDC

Polyvinylidene chloride. It is a polymer derived from vinylidene chloride. Polyvinylidene chloride is applied as a water-based coating to other plastic films such as biaxially-oriented polypropylene (BOPP), Nylon (NY), and polyester (PET). This coating increases the barrier properties of the film, reducing the permeability of the film to oxygen and flavours and thus extending the shelf life of the food inside the package.