Double sided PET tape is a pressure-sensitive adhesive system featuring a dimensional polyolefin/polyester film carrier coated on both sides with modified acrylic adhesive. In automotive interior manufacturing, it provides localized shear resistance, anti-repulsion performance against curved plastic substrates, and structural isolation without mechanical fasteners. It secures low surface energy (LSE) polymers, optical display modules, and ambient light guides under operating temperatures up to +150°C.
Center Console and Touchscreen Display Lamination
Modern automotive cockpits feature curved, multi-display glass layouts integrated into the dashboard instrument panel. Double sided PET tape provides critical structural support for frame bonding, optical film stack assembly, and cover lens retention.
- Frame Bonding and Bezel Attachment: The ultra-thin PET film carrier (ranging from 0.01 mm to 0.205 mm) maintains tight gap tolerances required for flush-mounted cockpit screens. Its high 180° peel strength (≥15 N/25mm on stainless steel) resists continuous dynamic vibration during vehicle operation.
- Optical Film Stack Splicing: Reflective, diffractive, and polarising films inside LCD/OLED backlights are bonded using high-clarity double coated polyester tape. The clear PET carrier minimizes light scattering while providing a static shear holding power exceeding 24 hours under constant mechanical strain.
- Anti-Gapping Performance: Dashboard displays expand and contract at rates distinct from the underlying ABS/PC frames. The modified acrylic formulation dissipates thermal stress across the bond line, preventing edge lifting or frame delamination during rapid thermal cycling between -20°C and +120°C.
LSE Plastic Bonding: Door Trims, Dash Boards, and ABS Badges
Automotive interior panels rely heavily on polypropylene (PP), polyethylene (PE), and acrylonitrile butadiene styrene (ABS). These low surface energy materials present low wetting capabilities that cause conventional adhesives to fail via interfacial cleavage.
- Instrument Panel Trim Strips: Decorative chrome-plated or wood-grain ABS trims mounted along the main dashboard require high initial tack (rolling ball test classification) for immediate bonding during line assembly. Double coated polyester tape wet-outs LSE plastic topographies rapidly without requiring chemical primers or corona surface treatment.
- Anti-Repulsion on Curved Trim Contours: Injection-molded interior door trims and instrument cluster hood bezels feature multi-axis curvature. The high tensile strength of the PET carrier acts as a dimensional stabilizer, preventing the adhesive layer from lifting due to internal material memory and elastic rebound forces.
- Climate Control and Air Vent Bezels: Small-profile vent surrounds and HVAC switch plates utilize precision die-cut PET tape gaskets. Die-cutting tolerances down to ±0.1 mm allow automated pick-and-place equipment to position adhesive preforms onto tight internal ribs without adhesive oozing or tear-out during release liner removal.
Ambient Light Guides and LED Strip Fixation
Indirect LED ambient lighting running along dashboard contours and door cards requires precise positioning to preserve light distribution and prevent optical distortion.
- Light Pipe and Diffusion Lens Retention: Light guides made of PMMA or Polycarbonate are sensitive to stress cracking when exposed to solvent-borne liquid adhesives. Solvent-free acrylic double sided PET tape eliminates chemical crazing while holding the light pipe flush against the dashboard housing.
- Flexible Printed Circuit (FPC) Mounting: Ambient lighting utilizes FPC strips routed through tight interior channels. High temperature PET tape provides electrical insulation and dielectric strength, securing the flexible circuit against the metal dashboard cross-member while resisting thermal dissipation generated by high-output RGB LED chips.
For demanding cockpit trim, display assembly, and NVH dampening specifications, engineering teams specify double sided PET film tape.
