Double-Side TPU-Coated PET Film – Purpose-Built for Membrane Switch Manufacturing
Price:
USD 0.166~1.316
MOQ:
1 square meter
Delivery Time:
7 working days
Brand:
XH
Product Description
Double-Side TPU-Coated PET Film – Purpose-Built for Membrane Switch Manufacturing
For membrane switch producers, every layer matters. The PET substrate must hold fine screen-printed legends, survive repeated dome actuations, stay dimensionally stable through thermal lamination, and present a flawless optical surface - especially for backlit panels.
The HT-15 series double-side TPU-coated PET film addresses all these demands. By combining a premium PET core with functional TPU coatings on both sides, it delivers the adhesion, formability, and consistency that membrane switch production lines require.
Five Key Advantages for Membrane Switch Processing
1. Superior Ink Adhesion - Screen & UV Inks Stay Put
The dual TPU coatings dramatically improve anchor strength for both fine-mesh screen-printing and UV-curable inks.
- Cross-Cutting Test: 100/100 Pass (JIS K5600) - no flaking, even after aggressive rubbing.
- Ideal for symbols, borders, and functional legends that must survive millions of actuations and exposure to sweat, detergents, or oils.
2. Excellent Dome-Forming Performance - No Cracking, Consistent Tactile Feel
- Elongation at Break: 154% (MD) / 110% (TD) - provides sufficient stretch for embossed dome formation without tearing.
- Balanced mechanical properties ensure uniform dome height and good spring-back, giving end-users a crisp, consistent click feel.
- Low heat shrinkage (MD ≤1.0%, TD ≈0.0%) prevents dome-position drift during thermal processes.
3. Dimensional Stability - Precise Layer-to-Layer Registration
With TD shrinkage near 0.0%, the HT-15 film minimizes transverse movement during printed circuit layer drying, spacer lamination, and overlay bonding. This drastically reduces misalignment between upper and lower circuit traces - a critical factor for electrical reliability in multi-layer membrane switches.
4. Outstanding Optical Clarity - Essential for Backlit & Window Displays
- Light Transmittance: ≥92% (JIS K7136)
- Haze: <1.3% (JIS K7136)
- Low rainbow stripes - eliminates unwanted interference fringes, ensuring uniform LED/LCD backlighting and crystal-clear viewing windows.
5. High Cleanliness with Dual Protective Liners - Minimized Surface Defects
- Manufactured under strict cleanliness control to reduce pinholes, gels, and foreign particles that cause print white-spots.
- Comes with green PE protective film (top, easy identification) and clear PE liner (bottom) - safeguards against scratches during storage, handling, and die-cutting.
Product Structure & Specifications
Tailored for Membrane Switch Lines
| Structure | Green PE protection / Double-side TPU-coated PET / PE protection |
| Model | HT-15 Series |
| Thickness Options | 100 μm (most common for membrane switches), 125μm, 188μm, 250μm |
| Standard Width | 1020 mm |
| Standard Length | 200 m/roll |
| Custom narrow slitting and special thicknesses available upon request. | |
Key Data Sheet - Membrane Switch Focus
| Property | Unit | Typical Value | Standard | Relevance for Membrane Switches |
|---|---|---|---|---|
| Light Transmittance | % | ≥92 | JIS K7136 | Uniform backlight brightness |
| Haze | % | <1.3 | JIS K7136 | Clear window areas |
| Heat Shrinkage (MD/TD) | % | 1.0 / 0.0 | JIS C2318 | Accurate multi-layer registration |
| Tensile Strength (MD/TD) | MPa | 163 / 180 | ASTM D882 | Punches cleanly without tearing |
| Elongation at Break (MD/TD) | % | 154 / 110 | ASTM D882 | Dome stretching without cracks |
| Cross-Cutting Test | -- | 100/100 Pass | JIS K5600 | Legends remain intact after wear |
Primary Applications
Directly for Your Production Line
- Home appliance membrane switches - washing machines, microwave ovens, AC panels
- Industrial HMI panels - machine tools, instrumentation, rugged controls
- Medical device keypads - requiring sanitization resistance and reliable print
- Smart home & remote controls - slim profiles with responsive domes
- Backlit membrane switch modules - leveraging high transmittance for uniform glow
Important Processing Note
All technical data are typical laboratory values and not guaranteed specifications. We strongly recommend that membrane switch manufacturers run full pilot trials - covering screen-printing, curing, dome forming, and lamination - before mass production. Our technical team is available to assist with thickness selection and process parameter recommendations.
Upgrade Your Membrane Switch Quality - Order a Sample Today
Choose HT-15 PET film for sharper legends, more consistent domes, higher lamination yields, and fewer field failures.
Request a free sample or speak with our membrane switch application specialist - we understand your process and can help you select the right grade quickly.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shenzhen XH Technology Co., Ltd.
Location
6rd Floor, Building 2, Shenjinji Science and Technology Innovation Park, No. 333 Ciyun Road, Hongtian Community, Xinqiao Street, Bao'an District, Shenzhenn, China
Contact Person
Jason