a

Abrasion Resistance

The ability of a material to resist surface wear.

Accelerated Aging

Accelerated aging is testing that uses aggravated conditions to speed up the normal aging process of items. It is used to help determine the long term effects of expected stress levels in a shorter time.

Acrylic

A transparent polymer that is tough and flexible. Acrylic adhesives set rapidly and are very strong due to heavy cross-linking.

Adhesion

A bond established upon contact between two surfaces.

Adhesive Residue

The adhesive remaining on a substrate when a self-adhesive material is removed from the substrate.

b

Bond

To be joined securely to something else.

c

Caliper

An instrument for measuring external or internal dimensions, having two hinged legs resembling a pair of compasses and in-turned or out-turned points.

Carrier

The material to which two adhesives are applied in a double-coated construction.

CE

The CE marking is the manufacturer’s declaration that the product meets the requirements of the applicable EC directives.

Clean Release

When adhesive can be removed from a substrate without leaving residue.

Compression Set

The permanent deformation remaining when a force that was applied to it is removed.

Conductive

Having the property of conducting something, especially heat or electricity.

Continuous Use Temp

The temperature range at which a material can function for an extended period of time without failing.

Converters

Companies that specialize in combining thin and flexible materials to create new products.

d

Die-Cut

The process of using a die to cut shapes of low-strength materials.

Dielectric Strength

The maximum electric field that a material can withstand under ideal conditions without breaking down.

Differential Adhesive

A double-sided tape where different adhesive and coating thicknesses are coated on each side.

Dimensional Stability

Ability of a substance or part to retain its shape when subjected to varying degrees of temperature, moisture, pressure, or other stress.

Double-Coated

Describing a material where adhesive is coated onto both sides of a carrier material.

Durometer

One of several measures of the hardness of a material.

e

Electrical Resistance

A material’s opposition to the flow of electric current, measured in ohms.

Elongation

The amount of extension of an object under stress, usually expressed as a percentage of the original length.

EMI Shielding

Electromagnetic shielding is the practice of reducing the electromagnetic field in space by blocking the field with barriers made of conductive or magnetic materials.

f

Fabric – woven and nonwoven

Woven – A textile formed by weaving or knitting textile fibers. Non-woven – Sheet or web structures bonded together by entangling fiber or filaments mechanically, thermally or chemically.

Film

Materials in the form of a thin flexible sheet.

Foam

A substance that is formed by trapping many gaseous bubbles in a liquid or solid.

Foil Tape

Tape where construction typically consists of adhesive laminated to a foil backing. Properties often include moisture and chemical resistance, thermal conductivity, heat and light reflectance, flame resistance and weatherability.

h

HF Compliant

Stands for “”Halogen Free””  Current RoHS and REACH directives require that materials be tested for certain chemicals…halogens and heavy metals are the materials of concern.

High-Tack

Describing an adhesive with an initial aggressive bond when applied to a substrate.

l

Lamination

The technique of manufacturing a material in multiple layers.

Liner

A substrate that acts as the carrier of the adhesive.

Low Surface Energy

The tendency of a surface to repel, rather than attract an adhesive.

Low-Tack

Describing an adhesive with an initial non-aggressive bond when applied to a substrate.

m

Mesh

A material made of a network of wire or thread

p

Peel Strength

A material’s ability to resist forces that pull it apart by separating a flexible surface from a rigid surface.

Phase-Change

A substance with a high heat of fusion. Heat is absorbed or released when the material changes from solid to liquid and vice versa.

Pressure Sensitive Adhesive

An adhesive that forms a bond when pressure is applied. Pressure is critical to the proper functioning of the PSA.

r

Release Liner

A component of the pressure-sensitive adhesive laminate that readily separates from the adhesive.

RoHS Compliant

Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment.

Roll Slitting

An operation that cuts a large roll of material into narrower rolls.

s

Shear Strength

A material’s ability to resist forces that can cause the internal structure of the material to slide against itself.

Single – Coated

Describing a material with a backing and an adhesive laminated to one side of the backing.

Substrate

The surface to which adhesive is applied.

u

UL

An independent not-for-profit product safety testing and certification organization.

Unsupported Adhesive

A coating of adhesive on a release liner with no carrier film.

v

Viscocity

The measure of a fluid’s resistance to flow.

w

Web Coating

The application of a thin functional material to a substrate, such as paper, fabric, film, foil or sheet stock, as it is wound through the coater. The substrate starts and ends the process on a roll.

z

Zone Coating

Adhesive is applied only to a controlled area of the web.