Glossary / T

Talc
Mineral used in papermaking as a filler and coating pigment.

Tearing resistance
Force needed to tear a sheet of paper under specified conditions.

Testliner
Mainly produced from waste paper used as even facing for corrugated board or as liner of solid board. They are often produced as duplex (two–layer) paper. The grammage is higher than 125 gsm.

Thermal papers
One–side coated thermoreactive papers used for printing text and illustrations on telefax machines, thermoplotters (e.g. for technical drawings) and thermoprinters (e.g. for labels, tickets, sales slips and other vouchers).

Three–layer paperboard
Paperboard consisting of three layers: front liner made from chemical pulp and/or waste paper pulp, middle made from waste paper pulp and back made from mechanical and/or chemical and/or waste paper pulp.

Tissue paper
Collective term for papers of a grammage of less than 30 gsm that differ in application and composition but have the common feature of being thin. They are mainly used to wrap delicate items, as tissue for bottle wrapping, as fruit tissue wrappers for oranges or as wet strength flower tissue. They are also used as base paper for the carbon paper production, as lining tissue for envelopes and as lining paper (e.g. as a composite with aluminium foil in cigarette packaging). The extremely thin Japanese tissue papers are sometimes produced in grammages as small as 6 to 8g.

Toilet papers
See "Sanitary tissue papers" and "Sanitary crepe papers".

Totally chlorine–free (TCF)
Pulp bleached entirely without chlorine chemicals.

Totally Chlorine–free paper (TCF)
Abbreviated used for papers made from pulps that were not bleached with chlorine compounds. The paper itself is not bleached.

Transparent paper
Extended and particularly careful grinding of high quality fibres (hard chemical pulps, rags) yields a raw material permitting the production of transparent paper.

Trimmings
Unusable strips produced during the cutting of various materials. The trim that will be eliminated at the finishing stage must be taken into account in all printed products.

Twin–wire machine
Paper or board machine in which the web is formed and partially dewatered between two wires.

Typewriter paper
Typewriterpaper (bank paper) is often woodfree, usually sized, erasure resistant and in rare cases coloured. It can be both with and without watermark and can also be embossed. Typewriterpaper (bank paper) is often woodfree, usually sized, erasure resistant and in rare cases coloured. It can be both with and without watermark and can also be embossed.