Glossary – Laminating, Coating & Converting

LAMINATION – A product made by bonding together two or more layers using thermal or adhesive technology.

LEADER – A fabric, paper, or film used to thread a machine to prevent damage of a customer

MASTER ROLL – A term used to describe a manufactured roll from which smaller rolls are cut from.

MATTE – A low or non-reflective surface of a film.

MICRON – A measurement of thickness of a material where 25 microns equals 1 mil (or 0.001″).

MIL – A term used for the thickness of a material measured as one thousandth of an inch (0.001″).

MSI – The abbreviation for one thousand square inches.

NIP – The contact rollers to bond materials together in a laminating machine.

NONWOVEN – A material that is not woven or knitted but produced by the interaction of a chemical and heat to randomly bond fibers together.

PEEL STRENGTH – The measurement of strength of the adhesive, usually measured on a resistance tester and recorded as grams or pounds.

POLYMER – A high molecular compound formed by the addition of smaller molecules to create a resin such as polyethylene or nylon.

PRIMER – The first coat of a coating to seal the base surface, such as the sealer used on a wall before applying the adhesive for a wallcovering.

PRESSURE SENSITIVE ADHESIVE – An adhesive which forms a bond when pressure is applied to the adhesive to adhere itself to a material or surface. Also referred to as PSAs (pressure sensitive adhesives).

PVC (VINYL) – A term used to describe poly vinyl chloride, generally a multi-purpose film used in laminating and various processes and products.

RELEASE LINER – A paper usually coated with silicone on one side; used when winding sticky adhesives, such as pressure sensitives.

SATURATION – In printing terms, the vividness or degree of color density. In chemical terms, the inability to absorb any additional liquids.

SELVAGE – The surplus edge of a fabric, normally finished to prevent unraveling.

SOLVENT – A liquid capable of dissolving another substance. As an example, water is a solvent for salt.

SPLICE – How material ends are joined together to make a continuous length, normally done by taping or sewing.

SURFACE TREATMENT – The application of an electrical or chemical treatment to improve the surface of a film.

TEXTURED SURFACE – The effect of having an embossed surface, usually as the result of high pressure laminating.

THERMAL BONDING – The method of bonding materials together using heat instead of adhesives.

TUNNELING – A term used when one laminated material,usually a film, separates from the other material creating a horizontal or vertical pocket.

WARP YARN – The lengthwise threads in a weaving process on a loom.

WEB – The term used to describe routing a material through a coating or laminating machine.

WEFT – The yarn that is woven back and forth through the warp yarn in a weaving process. See Filling Yarn.

WETTING – A term used to describe how evenly a liquid coats onto a film. The higher the wetting, the more even the coating