About Lucky Pressure Measurement Film
Lucky Pressure Measurement Film provides a simple and effective way to evaluate pressure balance, distribution, contact area, and pressure intensity. Manufactured using advanced thin-film coating technology, the film features a pressure-sensitive layer across its entire surface, allowing pressure distribution to be checked quickly and clearly.
When pressure is applied, the affected area develops a red color. The intensity of the red color changes according to the amount of pressure, making uneven pressure, contact points, and pressure distribution easy to identify at a glance.
Key Benefits
- Clearly displays pressure distribution and contact areas
- Reveals uneven pressure and pressure concentration points
- Color density changes according to pressure intensity
- Thin and flexible design for use in narrow spaces
- Easy to cut and apply to different test areas
- Provides immediate results without electronic measuring equipment
Film Structure
Lucky Pressure Measurement Film consists of two sheets: an L film coated with a microencapsulated color-forming material and a K film coated with a color-developing material. To perform a pressure test, place the coated surfaces of the two films face-to-face.
The coated sides of the L film and K film should face each other during testing.
Working Principle
When pressure is applied, the microcapsules in the color-forming layer rupture. The released colorless dye reacts with the color developer on the K film, producing a visible red image. The microcapsules are manufactured in different sizes and strengths and are distributed uniformly across the film. As a result, the developed color density corresponds to the pressure applied: greater pressure generally produces a deeper red color.
How to Use the Film
- Cut the L film and K film to the required size.
- Place the coated sides of the two films face-to-face.
- Insert the paired films between the surfaces to be tested.
- Apply pressure under the required operating or test conditions.
- Remove the films and evaluate the red image. A darker and more uniform color generally indicates stronger and more evenly distributed pressure.
How to Interpret the Result
A uniform red image indicates relatively even pressure distribution. Darker areas represent higher pressure, while lighter or uncolored areas may indicate lower pressure, insufficient contact, or uneven loading.
Important: Select the appropriate pressure range for your application and follow the recommended testing conditions. Results may be affected by temperature, humidity, pressure duration, and the condition of the contact surfaces.
Model Selection and Pressure Ranges
| Model | Pressure Level | Pressure Range | Film Type | Roll Size |
|---|---|---|---|---|
| 5LW | Ultra-Extreme Low Pressure | 0.006–0.05 MPa | Two-Sheet | 310 mm × 2 m |
| 4LW | Extreme Low Pressure | 0.05–0.2 MPa | Two-Sheet | 310 mm × 3 m |
| 3LW | Ultra-Super Low Pressure | 0.2–0.6 MPa | Two-Sheet | 270 mm × 5 m |
| 2LW | Super Low Pressure | 0.5–2.5 MPa | Two-Sheet | 270 mm × 6 m |
| 1LW | Low Pressure | 2.5–10 MPa | Two-Sheet | 270 mm × 10 m |
| MW | Medium Pressure | 10–50 MPa | Two-Sheet | 270 mm × 10 m |
| MS | Medium Pressure | 10–50 MPa | Mono-Sheet | 270 mm × 10 m |
| HS | High Pressure | 50–130 MPa | Mono-Sheet | 270 mm × 10 m |
Note: Select a film range that includes the expected contact pressure. Available models and packaging may vary; please confirm before ordering.