 | Tack | | Quick adhesion. The property of a pressure-sensitive label which causes it to adhere to a surface instantly with a minimum of pressure and contact time as measured by TLM Tester or equivalent equipment. |
| Tack Range | | The time during which an adhesive film remains tacky. |
| Tackifier | | A material such as rosin ester added to synthetic resins or adhesives to improve the initial tack of the adhesive film. |
| Tamper Proof Label | | Destructive label. A pressure-sensitive construction made with a face material having a low strength so that attempted removal of a label made from this stock will usually result in destruction of the label. |
| Tape | | Usually gummed paper in strip form and wound on spools for use. |
| TAPPI | | Technical Association of the Paper and Pulp Industry. |
| TC | | Topcoat |
| Tear Strength | | The force required to tear a specimen under standardized conditions in an instrument designed to simulate in a general way the tearing encountered under use conditions. |
| Tearing | | Breaking or slivering of a tape during unwind. |
| Telescoping | | A sideways sliding of the tape layers, one over the other, such that the roll looks like a funnel or telescope. |
| Tensile Strength | | The force parallel to the plane of the specimen required to break a given width and length of paper under specified conditions. |
| Thermal | | Adjective describing the effects of temperature or heat, e.g. thermal effects. |
| Thermal Transfer | | A thermal printing process utilizing a temperature sensitive ribbon that through heat and pressure is selectively transferred to a printable surface thus creating the desired image. The ink is transferred from the ribbon to the print surface thus the term "thermal transfer." |
| Thermoplastic | | A substance capable of being melted by means of heat repeatedly. |
| Thermoplastic Adhesives | | Adhesives which become softer as temperature increases, regardless of the number of heating cycles to which they are exposed. |
| Thermosetting Adhesives | | An adhesive coating that becomes rigid or non-meltable when heated with or without pressure and remains set regardless of subsequent temperature cycles. |
| Thickness | | Caliper. Distance from one surface of either a tape backing, or adhesive, to the other, usually expressed in mils or thousands of an inch. This is usually measured under slight pressure with a special gauge. |
| Tie Coat | | One layer of a coating system used to improve the adhesion of adjacent or succeeding coats. |
| Tissue | | Typically referred to as a carrier in a double coated product. A tissue carrier can make slitting and die cutting easier, by preventing adhesive flow. Tissue differs from film carriers in that it does allow for some elongation and permits more conformability. |
| Titanium Dioxide | | A white pigment manufactured from titanium ores and used as such or mixed with barium or calcium sulphate as a loading or coating material. These are characterized by great whiteness and brightness. Also used as a paint pigment. |
| Toner | | Imaging material used in electrophotography. In inks, dye used to tone printing inks, especially black. |
| Tooth | | A characteristic of paper, a slightly rough finish, which permits it to take ink readily. |
| Toxicity | | A term referring to the physiological effect of absorbing a poisonous substance into the system, either through the skin, mucous membrane or respiratory system. |
| Transfer | | Normally refers to "adhesive transfer." Any tape component which moves from its proper place to some other position during unwind or removal. |
| Transfer Tape | | A pressure-sensitive adhesive unsupported applied to a two-sided release coated liner. |
| Translucency | | Ability to transmit light without being transparent. |
| Transparency | | That property of a material which transmits light rays so that objects can be distinctly seen through the specimen. |
| Transparent Label | | A pressure-sensitive label whose face material, adhesive and protective coatings, transmit light so that objects can be seen through. |
| TT | | Thermal Transfer |
| Tunneling | | A condition occurring in completely bonded laminates, characterized by release of longitudinal portions of the substrates and deformation of these portions to form tunnel-like structures.
|