|
Terminology
|
| Adhesive, Pressure Sensitive |
| Adhesives that adhere to a surface when the adhesive is brought in contact with the surface and pressure is applied to the tape or label facestock. These adhesives are "tacky" to the touch and remain tacky after the bond is formed with the substrate. Due to their inherent tackiness, pressure sensitive adhesives are protected with a release liner prior to application to remain dirt free and prevent them from sticking before intended. The ultimate bond obtained is a function of many variables including time, pressure, application temperature and the substrate's surface smoothness and polarity. Also called peel and stick adhesive and self-stick adhesive. Abbreviated PSA or PS adhesive. |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Adhesive, Permanent |
| A tape or label with a permanent adhesive cannot be removed from the surface it is applied to without the tape or label being destroyed or leaving residue on the object that it was applied to. |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|
| Adhesive, Aggressive Permanent |
| An adhesive used when a general purpose permanent is not strong enough. It has more initial tack and superior adhesion strength. Also called extra permanent. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Adhesive, Removable |
| A removable tape or label can be removed from the substrate it is applied to without part of the tape or label remaining on the surface. Depending on its level of tack, a removable tape or label can damage the surface of some materials, such as wood and suede. After a period of time or exposure to weather, a removable tape or label may become permanent. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Adhesive, Ultra-Removable |
| An adhesive that allows a label to be reapplied in another area and is not limited to the number of times it can be repositioned. The adhesive does not become permanently adhered over long application times. The label can subsequently be repositioned elsewhere. Post-it® Notes are an example of ultra-removable adhesive. Also called repositionable. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Carrier |
| Double-coated tapes have a thin "carrier" of film or tissue paper to which one or two types of PSA adhesive is coated on each side. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Peel and Stick Adhesive |
| Another name for Pressure Sensitive Adhesive. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Release Liner |
| The backing material or carrier sheet of a pressure sensitive tape or label, which protects the adhesive until time of use. Generally has a release coating applied to the surface in contact with the adhesive to allow the adhesive to easily release or peel from the liner. Also referred to as the backing or liner. "Linerless" or self wound tapes and labels do not have a liner, but generally still have a release coating on the unwind surface to enable the adhesive to easily peel away from the previous layer. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Self-Stick Adhesive |
| Another name for Pressure Sensitive Adhesive. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Self Wound or Single Wound or Linerless |
| Term used to describe pressure-sensitive tapes when comparing them to linered tapes. Each subsequent layer of tape has the exposed adhesive in direct contact with the backing of the previous layer, which has a release coating on its surface to allow the adhesive to "release" from it. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Shear Force or Shear Stress |
| The work that results when two contiguous parts slide past each other in opposite directions and parallel to their plane of contact. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Shear Adhesion |
| The level of bond strength a pressure sensitive adhesive has to a substrate when shear force or stress is applied. For example, a PSA used to hang a picture on a wall needs to have excellent shear adhesion in order to work well. |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Transfer Adhesive Sandwich |
| Pressure sensitive adhesive that is coated between release liners with a release differential (one side of the liner has a higher release force versus the other side) so the release liners can be peeled away successively for application of the adhesive to a substrate such as an easel. To use the adhesive, the remaining layer of release liner is removed to expose the other side of the adhesive, allowing the easel to be attached, for example, to the backside of a mounting board. Also called transfer tape and two-sided tape. |
| |
|
Back to top
|
