GLOSSARY OF TERMS

Know your stuff.

American Society for Testing Materials. This organization develops testing standards to determine the properties and performance of materials.

Chlorofluorocarbons. Any of several organic compounds composed of carbon, fluorine, chlorine, and hydrogen. Contributes to stratospheric ozone depletion.

A cell totally enclosed by its walls, and therefore does not interconnect with other cells.

The loss of thickness of a material under a constant load over a specific period of time.

The amount of force required to compress a foam specimen by a given percentage over the entire top area of the specimen. Usually expressed in pounds per square inch.

The establishment of a chemical bond between the molecular chains of a given polymer, thereby imparting superior physical properties.

Reams of statistics that are material specific, related to G factor, allowing optimal solutions with cost always a factor. Measures the amount of cushioning protection provided by packaging materials of a specific density and thickness.

Describes the weight per unit volume of a material – usually expressed in PCF (per cubic foot) – weight of one cubic ft. (12″ x 12″ x 12″) or kg/m3 (kilograms per cubic meter).

i.e. 1232 indicates a density of 1.2 PCF’s and an ILD or IFD of 32 lbs. Important designation for PU.

Exterior Insulation Finishing System such as dryvit.

The maximum length a material can be stretched without tearing, or exhibiting permanent distortions. The value expressed as percentage of the materials original length.

Expanded Polystyrene, also know as beadboard.

A measure of fragility ranging from extremely delicate (15-25 G’s) to rugged (115 G’s).

Hydro chlorofluorocarbons. Gaseous compounds that contribute to stratospheric ozone depletion.

Insulated Concrete Forms

Initial load deflection or initial force deflection. This is a gauging of compression, i.e.: softness or firmness. The higher the number the firmer the foam.

A measure of thermal conductivity. The amount of heat (BTUs) that is transmitted through one square foot of a material, one inch thick, during a period of one hour. Lower values indicate better insulating properties.

Metric equivalent to PSI (pounds per square inch).

Product made by bonding together two or more layers of similar, or dissimilar materials.

A random network of cells found in ethers, esters, and grafted. 99% of polyurethane packaging foam is non-reticulated.

A cell is not totally enclosed by its walls and therefore exhibits a predominance of interconnecting cells.

Polyethylene foam.

Polypropylene foam.

Pressure sensitive adhesive that can be applied to all foams.

Pounds per square inch.

Polyurethane foam. Also know as flexible urethane.

The ability of a material to recover from impressions and withstand additional impacts. Usually expressed as the ratio of return to impressed energy.

A foam with a network of uniform cells, used to filter everything from blood to air. Often referred to as PPI (pores per inch) foam.

Unit of measure describing the ability of an insulation to resist heat flow. Higher values permit less heat flow.

Thermal Foam’s (Structural Insulated Panels).

The maximum amount of stress a material can withstand without tearing while being stretched lengthwise.

Dimensional stability in any direction of a material at elevated temperatures.