You are here: products ·prescale film LLWDescription: Fuji Prescale Pressure-Sensitive Film, suitable for measuring the distribution of surface contact pressures (LLW range: from 0.5 to 2.5 MPa (from 5 to 25 kgf/cm²; from 73 to 363 psi).
Pressure-sensitive Prescale Film for measuring the distribution of surface contact pressures, LLW range: from 0.5 to 2.5 MPa (from 5 to 25 kgf/cm²; from 73 to 363 psi)
Fuji Prescale Film LLW: Overview
Although Prescale film was developed by Fuji Film in the late 1970s, numerous additional applications have been successfully addressed using Prescale Film
(see relevant sections). Even today, many years after its introduction, new applications continue to be added to those already known.
To better cater to the wide range of potential uses for Prescale, Fuji Film has developed this product family, offering a variety of measurement ranges
(which have been further expanded in recent years). This allows them to provide a product family capable of covering virtually any application. Specifically,
the Prescale LLW film can be used for all applications where contact pressures range from 0.5 to 2.5 MPa (5 to 25 kgf/cm²; 73 to 363 psi). There are countless
scenarios in manufacturing and production that require verification of the correct level of applied pressure. Additionally, the ability to monitor this crucial
parameter extends the operational life of machines and their components, enhances product quality levels, and, in some cases, increases worker safety.
The consistency and stability of the applied pressure value, alongside the various production processes that utilize it, improve the final product quality by
indirectly enabling control and improvement of process repeatability.
The Prescale product range is indeed a methodology for study, analysis, and verification, which can be advantageously used for surface contact phenomena without
requiring specific skills or particular technical knowledge. The use of Prescale pressure-sensitive film is very simple, fast, intuitive, and does not require
specific preparation. From its first use, the image impressed with various levels of magenta red will provide a clear visualization of pressure distribution,
which can be interpreted by direct comparison with the provided colorimetric reference table or through more accurate and repeatable electronic measurement methods.
Numerous studies conducted by authoritative external parties have confirmed the validity, accuracy, and repeatability of these results, even when compared with
other measurement methodologies using different technologies. Many production environments have in fact "normalized" various internal quality checks based on the
use of Prescale film.
Fuji Prescale Film LLW: Key Features
immediate "mapping" of surface pressure distribution;
allows measurements between 0.5 and 2.5 MPa (5 to 25 kgf/cm²; 73 to 363 psi);
high repeatability of results in measurement campaigns;
good accuracy of measurements (±10% typical, with visual estimation);
availability of optional electronic analysis systems.
Fuji Prescale Film LLW: Technology Overview
Depending on their measurement range, Prescale films are available in two different formats: single-sheet and double-sheet. For lower measurement ranges,
Fuji Film's technology requires the use of two different sheets (A and C), whereas for higher measurement ranges, the Prescale film is single-sheet.
The Prescale film with the LLW range is available only in the double-sheet version (two sheets type). The double-sheet type consists of a first sheet called
Film-A, which has an extremely uniform layer of microcapsules (proprietary technology PSC - Particle Size Control) containing a dye, and a second sheet called
Film-C, on which the fixing agent for the dye has been applied.
When the Prescale film is subjected to surface contact stress, the dye microcapsules will rupture (in a quantity proportional to the applied contact pressure
and according to the distribution generated by the stressed areas), causing the dye to be released and immediately fixed by the chemical reagent present on the
second sheet. Thanks to Fuji Film technology, it is possible to produce films with microcapsule layers characterized by different and optimizable rupture points
during production, essentially providing a range of measurement fields while ensuring high repeatability and predictability of the rupture point.
If you have any doubts, further useful information can be obtained by consulting the FAQ Prescale
Fuji Prescale Film LLW: Technical Specifications
designation: super low pressure;
product code: LLW;
type: double-sheet film
roll dimensions: 270 mm x 6 meters (lenght);
measurement range: from 0,5 to 2,5 MPa (from 5 to 25 kgf/cm²; from 73 to 363 psi);
accuracy (*) (**) : tipically ±10%;
recommended temperature range: from +20 °C to +35 °C (from 68°F to 95 °F)
recommended humidity range: from 35% RH to 80% RH.
(*) data typically measured with a densitometer, under environmental conditions of 23°C (73°F) and 65% RH; (**) better accuracy can be achieved with appropriate electronic analysis systems..
Fuji Prescale Film LLW: Usage Instructions
It is recommended to prepare the Prescale LLW films well in advance of the test, allowing the films (Film-A and Film-C) to adjust
to the environmental conditions of temperature and humidity in which they will be used. Unroll an adequate amount of films for the test to be conducted,
ensuring they rest on a clean, dry, preferably dimly lit surface. These preparatory actions will allow the films to settle, simplifying the subsequent cutting and
positioning operations described in the sequence below.
During these operations (and those that follow), place only the glossy sides of the films on the work surfaces (the matte sides are the ones that, when combined,
determine the density and distribution of the recorded color), to avoid any accidental contact that could affect the films before testing.
Proceed to cut the Prescale LLW sheets to the desired dimensions using a simple pair of scissors.
Since it consists of two films (Film-A and Film-C), make sure to cut both films that make up the Prescale Film, ensuring that
the dimensions you define are suitable for the area to be tested.
For the reasons previously mentioned, handle the Prescale LLW with the utmost care and delicacy. Ensure that the two films are stacked with their
cut shapes aligned. The films should be positioned with their respective opaque surfaces facing each other (with the glossy sides facing outward);
make sure to keep this in mind during cutting.
After aligning the two films with their respective opaque sides facing each other, place the resulting double layer in the area to be tested.
Apply the contact phenomenon to be studied to impress the Prescale. For details on how to reproduce the phenomenon being analyzed and the timing
involved, refer to the instruction sheet provided.
Evaluate the results of the test using the instruction sheet provided with the Prescale, which includes a colorimetric scale and reference charts.
The film will show a mapping of the detected contact areas, recording (according to the density of the developed color) the magnitude of the applied pressure,
which can be assessed visually by comparing it with the provided colorimetric chart.
THE FOLLOWING STEPS ARE OPTIONAL AS THEY REQUIRE THE USE OF ADDITIONAL ANALYSIS TOOLS THAT CAN BE PURCHASED SEPARATELY.
If more accurate and repeatable evaluations of the results obtained from Prescale are necessary, it is possible to scan the impressed films
(for example, using an Epson™ Perfection scanner) to obtain electronic format images. These images can then be easily saved, stored, and archived
(for potential future comparisons), but most importantly, they can be analyzed using optional support software.
Once digital scans of the Prescale films impressed by the analyzed event have been prepared, you can use the optional FPD-8010E support software to perform
further analyses, such as evaluating colorimetric results using false colors, rendering three-dimensional profiles, calculating the average contact pressure, etc.
See package FPD-8010E for more details.
It is also worth noting the availability of the Prescale Safety Data Sheet and an initial guide to selecting measurement ranges, tailored to various application scenarios, complemented by an introduction to the FPD-8010E system:
The Prescale film with LLW range has been advantageously used in the following application scenarios:
calibration of contact pressures between molds and dies;
pressure control between rollers and surfaces;
adjustment of contact pressures in calender rollers;
study and verification of tire footprints;
analysis of contact pressures between discs and pads in braking systems;
verification of pressures during the winding of high-performance films;
calibration of contact pressure for applicator blades distributing pastes, adhesives, and coatings;
study and analysis of pressure distribution and magnitude generated by impacts on surfaces;
medical studies and analysis (e.g., plantar pressure, orthopedics, ergonomics, etc.
It is also recommended to review the specific section containing the Application Notes
prepared by Fuji Film for the Prescale Film, and the additional section on Applications in Different Markets,,
which summarizes the most significant applications related to various market segments successfully addressed by the Prescale Film.
You are here: products · prescale film LLW Description: Fuji Prescale Pressure-Sensitive Film, suitable for measuring the distribution of surface contact pressures (LLW range: from 0.5 to 2.5 MPa (from 5 to 25 kgf/cm²; from 73 to 363 psi).
Prescale Film LLW
Super Low Pressure
Pressure-sensitive Prescale Film for measuring the distribution of surface contact pressures, LLW range: from 0.5 to 2.5 MPa
(from 5 to 25 kgf/cm²; from 73 to 363 psi)
Fuji Prescale Film LLW: Overview
Although Prescale film was developed by Fuji Film in the late 1970s, numerous additional applications have been successfully addressed using Prescale Film (see relevant sections). Even today, many years after its introduction, new applications continue to be added to those already known.
To better cater to the wide range of potential uses for Prescale, Fuji Film has developed this product family, offering a variety of measurement ranges
(which have been further expanded in recent years). This allows them to provide a product family capable of covering virtually any application. Specifically,
the Prescale LLW film can be used for all applications where contact pressures range from 0.5 to 2.5 MPa (5 to 25 kgf/cm²; 73 to 363 psi). There are countless
scenarios in manufacturing and production that require verification of the correct level of applied pressure. Additionally, the ability to monitor this crucial
parameter extends the operational life of machines and their components, enhances product quality levels, and, in some cases, increases worker safety.
The consistency and stability of the applied pressure value, alongside the various production processes that utilize it, improve the final product quality by
indirectly enabling control and improvement of process repeatability.
The Prescale product range is indeed a methodology for study, analysis, and verification, which can be advantageously used for surface contact phenomena without
requiring specific skills or particular technical knowledge. The use of Prescale pressure-sensitive film is very simple, fast, intuitive, and does not require
specific preparation. From its first use, the image impressed with various levels of magenta red will provide a clear visualization of pressure distribution,
which can be interpreted by direct comparison with the provided colorimetric reference table or through more accurate and repeatable electronic measurement methods.
Numerous studies conducted by authoritative external parties have confirmed the validity, accuracy, and repeatability of these results, even when compared with
other measurement methodologies using different technologies. Many production environments have in fact "normalized" various internal quality checks based on the
use of Prescale film.
Fuji Prescale Film LLW: Key Features
Fuji Prescale Film LLW: Technology Overview
Depending on their measurement range, Prescale films are available in two different formats: single-sheet and double-sheet. For lower measurement ranges, Fuji Film's technology requires the use of two different sheets (A and C), whereas for higher measurement ranges, the Prescale film is single-sheet. The Prescale film with the LLW range is available only in the double-sheet version (two sheets type). The double-sheet type consists of a first sheet called Film-A, which has an extremely uniform layer of microcapsules (proprietary technology PSC - Particle Size Control) containing a dye, and a second sheet called Film-C, on which the fixing agent for the dye has been applied.
When the Prescale film is subjected to surface contact stress, the dye microcapsules will rupture (in a quantity proportional to the applied contact pressure and according to the distribution generated by the stressed areas), causing the dye to be released and immediately fixed by the chemical reagent present on the second sheet. Thanks to Fuji Film technology, it is possible to produce films with microcapsule layers characterized by different and optimizable rupture points during production, essentially providing a range of measurement fields while ensuring high repeatability and predictability of the rupture point.
If you have any doubts, further useful information can be obtained by consulting the FAQ Prescale
Fuji Prescale Film LLW: Technical Specifications
(*) data typically measured with a densitometer, under environmental conditions of 23°C (73°F) and 65% RH;
(**) better accuracy can be achieved with appropriate electronic analysis systems..
Fuji Prescale Film LLW: Usage Instructions
It is recommended to prepare the Prescale LLW films well in advance of the test, allowing the films (Film-A and Film-C) to adjust to the environmental conditions of temperature and humidity in which they will be used. Unroll an adequate amount of films for the test to be conducted, ensuring they rest on a clean, dry, preferably dimly lit surface. These preparatory actions will allow the films to settle, simplifying the subsequent cutting and positioning operations described in the sequence below. During these operations (and those that follow), place only the glossy sides of the films on the work surfaces (the matte sides are the ones that, when combined, determine the density and distribution of the recorded color), to avoid any accidental contact that could affect the films before testing.
THE FOLLOWING STEPS ARE OPTIONAL AS THEY REQUIRE THE USE OF ADDITIONAL ANALYSIS TOOLS THAT CAN BE PURCHASED SEPARATELY.
See package FPD-8010E for more details.
Fuji Prescale Film LLW: Reference Documentation
It is also worth noting the availability of the Prescale Safety Data Sheet and an initial guide to selecting measurement ranges, tailored to various application scenarios, complemented by an introduction to the FPD-8010E system:
Fuji Prescale Film LLW: Main Applications
The Prescale film with LLW range has been advantageously used in the following application scenarios:
It is also recommended to review the specific section containing the Application Notes prepared by Fuji Film for the Prescale Film, and the additional section on Applications in Different Markets,, which summarizes the most significant applications related to various market segments successfully addressed by the Prescale Film.
©1998-2024 Spare sas
In preparing this document, the utmost care has been taken to ensure that the content accurately reflects the characteristics of the described product. However, despite these efforts, Spare sas cannot be held responsible or liable for any inaccuracies. Furthermore, in the context of ongoing product development and improvement, please note that the information provided may not be up-to-date with the latest version, as manufacturers reserve the right to withdraw or modify their product documentation at any time without notice. Consequently, it is advised to verify the accuracy and currency of the information at the time of purchase.