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Double-Side TPU-Coated PET Film – Purpose-Built for Membrane Switch Manufacturing

Double-Side TPU-Coated PET Film – Purpose-Built for Membrane Switch Manufacturing

Brand Name:	XH
Model Number:	HT15
MOQ:	1 square meter
Price:	USD 0.166~1.316
Delivery Time:	7 working days
Payment Terms:	T/T,Western Union

Detail Information

Product Description

Detail Information

Place of Origin:

Shenzhen, China

Certification:

ISO 13485, ISO 9001, IATF 16949, FCC, SGS

Document:

XH 125 μm PET TDS High Lig...15.pdf

Insulation Resistance:

≥100 MΩ @ 100V DC

Haze:

Below 1.3%

Heat Shrinkage:

MD 1.0% / TD 0.0%

Tensile Strength:

MD 163 MPa / TD 180 MPa

Elongation At Break:

MD 154% / TD 110%

Light Transmittance:

≥92%

Packaging Details:

Tray / Carton

Supply Ability:

500000 square meter

Highlight:

Cross-Cutting Test 100/100 Pass Double-Side TPU-Coated PET Film

Heat Shrinkage MD 1.0% TD 0.0% HT-15 Series PET Film

Light Transmittance ≥92% Clear PET Film

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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products details

Double-Side TPU-Coated PET Film – Purpose-Built for Membrane Switch Manufacturing

Cross-Cutting Test 100/100 Pass Double-Side TPU-Coated PET Film

Heat Shrinkage MD 1.0% TD 0.0% HT-15 Series PET Film

Light Transmittance ≥92% Clear PET Film