Products> Pressure Measurement Film > Prescale

Prescale

Red patches will appear on the film wherever contact pressure is applied and the color density indicated will vary according to the differing contact pressure levels.

Prescale film can precisely measure pressure, pressure distribution, and pressure balance.
Fujifilm`s advanced technology in color film manufacturing enables Fuji to produce extremely thin and stable Prescale films of less than 200μm(100μmx2)
Red patches will appear on the film when pressure is applied and the color density changes according to the various pressure levels.
There are Seven types of Prescale available to fulfil your varying pressure range.(0.05∼300 MPa)(7.25 psi∼43,500 psi)

Strong Points

  • Easy visual check of distribution/uniformity for contact pressure
  • Contact pressure shown with differing concentrations of color can even be converted into numbers.
  • Lower cost with no special devices or equipment required
  • Quick measurement gives an at-a-glance picture.

Line Up

Eight types of Prescale are supplied according to pressure level. Select appropriate Prescale.

Line Up, Six types of Prescale

Note

  • * W in the product codes indicates two-sheet type, S indicates mono-sheet type.

Structure

There are two types of Prescale. Mono-sheet type is composed of a polyester base on which the color-developing material is coated, with the micro-encapsulated color-forming material layered on top. Two-sheet type is composed of two polyester bases. One is coated with a layer of micro-encapsulated color forming material and the other with a layer of the color-developing material. Use two films facing the coated sides each other.

Two types of Prescale(Extreme Low:4LW∼Medium:MW)

How it works

When pressure is applied, the microcapsules are broken and the color-forming material reacts with the color-developing material. Red patches appear on the film.

Mono-sheet type (Medium:MS∼Super High:HHS)

How to use

Prescale is the only material in the world able to measure pressure!
Microcapsules are broken and react with a color developing agent when pressure is applied.

Note

  • * Extra care should be taken in handling the extreme low pressure films. Do not touch, rub or bend the color-forming sheet surface.
Two-sheet type (Extreme Low:4LW∼Medium:MW)

Cut two Prescale films appropriately. (A-film in black poly sack and C-film in blue poly sack) Face the rough surfaces of each film and insert the films where you want to measure pressure. Apply pressure. Red patches appear on the film and the color density changes according to pressure level. Take out the C-film, see and check the pressure distribution. For further precise pressure values, please use the pressure analyzing system.

Mono-sheet type (Medium:MS∼Super High:HHS)

Cut Prescale film in black poly sack appropriately.
Insert the film where you want to measure pressure.
Apply pressure. Red patches appear on the film and the color density changes according to pressure level.
Take out the film, see and check the pressure distribution.
For further precise pressure values, please use the pressure analyzing system.

Applications

Automobile
Adjustment of pressure distribution and balance for various automobile-parts.
-Cylinder head gasket, Engine, Brake, Clutch, Tire, Carburetor, Gasket and Packing, Molding, Oil pan, Transmission, etc.
LCD
  • Adjustment of pressure distribution for Polarizer sticking.
  • Adjustment of pressure distribution for ACF bonding and TCP bonding.
Semiconductors
  • Adjustment of lamination roll pressure distribution for back grinding tape and dicing.
  • Adjustment of polishing pressure distribution in semiconductor CMP processes.
Printed circuit boards
  • Adjustment of squeeze pressure distribution of solder cream against printed circuit boards.
  • Adjustment of dry film resist(DFR) lamination pressure distribution for multilayer printed circuit boards.
Suitable for many other different applications
  • Adjustment of nip roll pressure balance of high-performance films
  • Adjustment of pressure balance for lamination rolls
  • Measurement of winding pressure for high-performance films
  • Adjustment of pressure distribution for vacuum laminators
  • Adjustment of pressure distribution and flow check for fuel cell stacks

Specifications and Operational Environment

Accuracy ±10% or less (measured by densitometer at 23°C,65% RH)
Recommended service temperature 20°C∼35°C( 68 °F∼ 95°F )*
Recommended service humidity 35% RH ∼ 80% RH**
Thickness mono-sheet type(S): 100µm
two-sheet type(W):100µm x2

Notes

  • * Extreme low pressure (4LW), Super high pressure (HHS): 15 °C∼30°C
  • ** Extreme low pressure (4LW): 20% RH ∼ 75% RH
        Super high pressure (HHS): 35% RH ∼ 70% RH

Pressure Chart (Low Pressurecase)

Continuous pressure

Measurement pressure range:Low pressure (2.5∼10 MPa)
Pressure application condition:Time to reach the pressure 2 min.
Time of retention at the pressure 2 min.

Note

  • * Taking the temperature and humidity condition into consideration, select a curve among A, B and C.
Momentary pressure

Measurement pressure range:Low pressure (2.5∼10 MPa)
Pressure application condition:Time to reach the pressure 5 sec.
Time of retention at the pressure 5 sec.

Note

  • * Taking the temperature and humidity condition into consideration, select a curve among A, B and C.

 

 


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