The objective is to temporarily mask a substrate during chemical or mechanical process operations.
Single-sided adhesive tapes with a paper substrate are the reference solution. Single-sided adhesive tapes with polymer film substrates can be used for applications that require greater chemical or mechanical resistance.
This is of course the most widely-used process that exists for applying paint on a wall for decoration, or on a car or aircraft. The constraints are entirely different according to the industries which require a large range of suitable products (temperature, type of paint applied either by a gun or with a brush…). Paper masking adhesives are used. Film masking adhesives can also be used in particular for applications over long straight lines. Application: Transport, Construction…
During treatments of metal in particular, such as galvanoplasty, or chrome-plating, an adhesive that is highly resistant to chemicals (acids, bases) and to high temperatures (up to 310°C) is required. The adhesive is then primarily comprised of a film (Polyamide, PVC, polypropylene).
For mechanical treatments of the sand-blasting and shot-peening type, an adhesive is required that resists abrasion and temperature for several seconds. Generally, very thick adhesive papers are used as they are solid and resistant.
Certain treatments such as powder coating, or plasma torch entail very high process temperatures (>200°C) and for a long time (30 min /1h), requiring adhesives that are comprised of a film and of an adhesive mass that are specific such as silicone, in order to be able to resist these stresses.
Gelcoat Autoclave, Plasma Torch