Prescale Film
Prescale film is a method of measuring contact linear and planar pressures. The product is a thin film consisting of micro-encapsulated colour forming dyes and colour developing chemicals.
When pressure is applied to the film, a red colour impression is formed in varying density according to the amount of pressure and pressure distribution. The film can be used in both stationary and moving applications to measure pressures up to 18,500 PSI.
The Prescale Film system is complete with a range of portable and PC-based analysis instruments.
Two-sheet Prescale Film
Prescale Film is composed of an A-Film, which is coated with a Micro-encapsulated colour-forming material, and a C-Film, which is coated with a colour-developing material. The A-Film and C-Film must be positioned with the coated sides facing each other.
Mono-sheet Prescale Film
The colour-developing material is coated on a polyester base, with the micro-encapsulated colour-forming material layered on top.
How it works …
When pressure is applied, the microcapsules are broken and the colour-forming dye that is released reacts with the colour-developing chemicals to generate colour. A commonplace example of the simple use of this technology is with ‘carbon-less’ paper where an impression is made on a second page when writing on the first, without the use of carbon paper.
Prescale, however, is much more sophisticated. Through Particle Size Control (PSC) technology, the microcapsules in Prescale are designed to react to various degrees of pressure, releasing their colour-forming material at a density that corresponds to the pressure.
When pressure is applied, a red colour emanation appears. The entire piece of Prescale film acts as a sensor and you can see at a glance the distribution of pressure, as well as being able to measure the amount of pressure applied. Prescale film is supplied in rolls, which are boxed for ease of use and for protection of the film