Canada's Source for Plastic Sheet, Rod, Tube & Film.

The stress at which the strain exceeds by a specified amount (the offset) an extension of the initial proportional portion of the stress-strain curve. It is expressed in force per unit area, usually pounds per square inch.

The group of unsaturated hydrocarbons named after the corresponding paraffins by the addition of the "ene" and "ylene" to the stem. Examples are ethylene, propylene and butenes. Polymers of olefins and sometimes called olefin plastics or polyolefins.

Optix is a continuously processed, high-quality thermoplastic acrylic sheet. Optix is crystal clear, durable, weather resistant and lightweight. It offers ease of fabrication, low heat loss and is available in a variety of colors. Optix is a registered trademark of Plaskolite Inc.

The process of stretching a hot plastic article to align the molecules, thus altering mechanical properties. When the stretching force is applied in one direction, the process is called uniaxial orientation. When stretching is in two directions, the term biaxial origination is used. Upon reheating, an oriented film will shrink in the direction(s) of orientation. This property is useful in applications such as shrink packaging and for improving the strength of molded or extruded articles such as pipe and fibres.

In respect to polyethylenes, the reaction of air or oxygen in polyethylene causing the formation of hydroxy groups which affects the physical properties adversely.

A hollow tube of plastic melt extruded from die head of a blow molding machine and which is expanded within the mold cavity by air pressure to produce the molded part.

The line formed by the mating surfaces of the mold halves.

Tablets of uniform size, consisting of resins or mixtures of resins with compounding additives which have been prepared for molding operations by shaping in a pelletizing machine or by extrusion and chopping into short segments.

The passage or diffusion or a gas, vapour, liquid, or solid through a barrier without physically or chemically affecting it.

These thermosetting resins are credited with being the first commercialized wholly synthetic polymer or plastic. The basic raw material is usually formaldehyde and phenol. In the uncured and semicured condition, phenolic resins are used as adhesives, casting resins, potting compounds, and laminating resins. As molding powders, phenolic resins can be found in electrical uses.

Degradation of plastics due to the action of light. Most plastics tend to absorb high-energy radiation in the ultraviolet portion of the spectrum, which results in the formation of free radicals and causes oxidation, cleavage, and other degradative reactions.

Tiny hole in cast, extrusion coating or extruded sheet or blow molded product.

Extrusion process by which heavywall continuous profiles are produced. Die design determines shape of extrudate and designs range from a simple circular shape to complex window channels and moldings.

(adj.) An adjective indicating that the noun modified is made of, consists of, or pertains to plastics. (noun) A material that, in its finished state, contains a synthetic polymer of high molecular weight, is a flexible or rigid solid but not an elastomer in its finished state, and at some stage in its manufacture or processing can be shaped by flow or by in-situ polymerization or curing.

The tendency of a thermoplastic material which has been stretched while hot to return to its unstretched shape upon being reheated.

The undesirable deposition of additives or pigments on machinery during processing of plastics.

Plexiglas is a crystal clear, lightweight acrylic plastic sheet having outstanding weatherability, high impact resistance, good chemical resistance, and excellent thermo-formability and machinability. Aside from colorless sheet, the two forms of Plexiglas come in a wide variety of transparent, translucent, and opaque colors, as well as in several different surface patterns. Plexiglas is a registered trademark of Arkema, Inc.