Today several manufacturing and production aspects require to have ensured the proper amount and distribution of applied pressure. Diagnosis of pressure excess applied to some production machines can ensure a long life and improved workplace safety. Costant and stable applied pressure improve final quality and increase the features repeteability of the final item, since the manufacturing process has been made more repeteable. The use of the Prescale film is very simple and intuitive and it will not require any specific user training, as since the first composed magenta's colour levels impressed figure, it will offer an immediate visual tool of pressure distribution that could be improved by comparison with a reference sample table (or better acquired by electronic means like densitometers), in ensuring the true pressure magnitudo too. If you also need to get a true temperature distribution imaging, do not forget to visit also the Thermscale paper information page.

Prescale main relevant features:
- true visual "imaging" of pressure distribution and magnitudo;
- ±10% as typical accuracy, with good repteability;
- 5 measuring ranges available (from 0.2 to 130 MPa).
 

Prescale film structure - how it works:
Depending from its measuring range, Prescale film is available under two possible formats, one based on two sheets (A + C), and another as a single sheet. 

Two sheets film
Two sheet type of Prescale film is composed by a A film wich is coated with a particular micro encapsulated color forming material, and by a C film, wich is coated with a specific color developing material. Used in conjunction, the two films should be placed with the coated (rough and opaque) surface facing each other.

Single sheet film
With single sheet Prescale film, the color forming layer is coated on the poliester base of film. Micro incapsulated color forming material is layered on the top of film.

How it works
When pressure is applied on the film, microcapsules are broken with distribution and "density" of magenta color depending by true pressure distribution and magnitudo. When microcapsules are broken, their material is released and it react with the color developing material and this process will cause magenta color forming.  Through PSC technology (Particle Size Control), layered microcapsules are designed to react to various degrees of pressures, releasing their color forming material at a density that correspond to specific levels of applied pressure. This tecnology also make possible to have several measuring ranges, under several types of Prescale films.
 

Prescale film method of use:
Cut Prescale film into application required shape and size. When single sheet type is used, for use with water or oil, please make sure that supplied protection sheet will be used.  With the two sheets film format make sure that coated sides on both A and C films are facing each other. Insert then cutted Prescale film into area to be measured and then apply pressure or force phenomenon. Remove impressed film and observe pressure distribution and magnitudo. Impressed results could be measured by visual inspection toward a standard reference sample table (supplied together any sample of Prescale film), or with more accurate means like an electronic densitometer.

 
Prescale available ranges:

MODEL	Description	Measuring ranges	Dimensions	Type
LLLW	ultra super low pressure	from 0,2 to 0,6 MPa (from 2 to 6 kg/cm²)	270 mm (w) x 4 m (l)	two sheet
LLW	super low pressure	from 0,5 to 2,5 MPa (from 5 to 25 kg/cm²)	270 mm (w) x 5 m (l)	two sheet
LW	low  pressure	from 2,5 to 10 MPa (from 25 to 100 kg/cm²)	270 mm (w) x 10 m (l)	two sheet
MW	medium pressure	from 10 to 50 MPa (from 100 to 500 kg/cm²)	270 mm (w) x 10 m (l)	two sheet
MS	medium pressure	from 10 to 50 MPa (from 100 to 500 kg/cm²)	270 mm (w) x 10 m (l)	single sheet
HS	high pressure	from 50 to 130 MPa (from 500 to 1300 kg/cm²)	270 mm (w) x 10 m (l)	single sheet

- W in the product cde indicates two sheet type; S indicates single sheet.
- Pressures between 0.01 and 0.5 MPa can be measured with optional Prescale mat.
- 1 MPa = 10 kgf/cm² = 145 lbf/in² (psi)

- available ranges: LLLW, LLW, LW, MW, MS, HS (see above)
- accuracy(*)(**): ± 10% (typical); up to 2 or 3% with proper  electronic means
- recommended temperature range: from + 20 °C to + 35 °C
- recommended humidity range: da + 35 %RH a + 80 %RH
- film thickness (two sheet - W type): 180 µm (90+90µm) ±10 µm tolerance
- film thickness (single sheet - S type): 110 µm ±5 µm tolerance
(*) accuracy figure obtained with densitometer @ 23°C with ambient humidity as 65%RH;
(**) better accuracies are achievable with more accurate analysis tools sistems.
 

Typical applications: 
Fuji Prescale film has been successfully used in a very broad range of applications.
Due to its very innovative and powerful pressure distribution and magnitudo measuring method (pressure imaging), its whole range of possible applications has not yet been ensured, since every day new applications are meet.  Please try to visit related webpages, where a more than only significant list of application is reported.