In the modern industrial field that pursues thin, strong, and precise bonding, double-sided PET tape has become a key material for connection, fixing, sealing, and masking due to its excellent performance and wide applicability. From precise electronic component assembly to solid building material fixing, to creative advertising logo installation, double-sided PET tape is everywhere.
Double-sided PET tape is a tape-shaped bonding product made of biaxially oriented polyester film (PET Film) as the base material, double-sided coating of high-performance acrylic adhesive, and composite release materials (such as release paper or release film).
Choosing double-sided PET tape means you will get the following significant advantages, making it stand out among many double-sided tapes:
Ultra-high strength and stability: The PET base material gives the tape excellent tensile and tear resistance, ensuring long-lasting and reliable bonding. It has excellent dimensional stability and is not easy to shrink or expand due to changes in temperature and humidity, ensuring precise assembly.
Excellent temperature resistance: PET film itself has a wide temperature resistance range (usually -40°C to 150°C), and with specific high temperature resistant adhesives (such as modified acrylic or silicone), it can meet the short-term application requirements (such as SMT reflow soldering) at higher temperatures (such as 200°C+).
Excellent weather resistance and chemical resistance: It has good resistance to ultraviolet rays, ozone, and humid environments, and is not easy to age and become brittle. It also has a certain tolerance to a variety of chemicals (such as solvents and greases), suitable for harsh environments.
Ultra-thin and flat: PET substrates can be made very thin (common 0.025mm, 0.05mm, 0.075mm, 0.1mm, 0.13mm, etc.), achieving almost "invisible" bonding without thickness, without affecting the beauty and tolerance of product design.
Good electrical insulation: PET is an excellent electrical insulating material, making double-sided PET tape widely used in insulation, fixing and shielding in the electronic and electrical industry.
Excellent die-cutting performance: PET substrate has high strength and is not easy to deform. It is very suitable for precision die-cutting and processing into various complex shapes (such as FPC reinforcement, mobile phone foam fixing frame), with neat edges and less glue overflow.
High transparency/dyeable: Transparent PET tape is almost invisible and does not affect the appearance; it can also be made into white, black and other colors to meet different visual needs.
Diverse viscosity options: Adhesives with different viscosity levels (from low-viscosity removable to ultra-high-viscosity permanent) and special properties (such as flame retardant, conductive, thermal conductive, shock-absorbing) can be selected according to application requirements.
Main application areas of double-sided PET tape
With its unique performance combination, double-sided PET tape plays an indispensable role in the following key industries:
Electronic and electrical industry (core application):
FPC/PCB fixing and reinforcement: Fixing flexible circuit boards (FPC), strengthening PCB board gold fingers, and pasting electromagnetic shielding materials.
Display assembly: Fixing the touch panel, liquid crystal screen (LCD), OLED screen to the middle frame or backlight module, especially ultra-thin optical transparent tape (OCA).
Battery fixing: Bonding and fixing batteries in mobile phones, laptops, drones and other devices.
Component fixing and insulation: Fixing heat sinks, chips, capacitors and resistors, etc., to provide electrical insulation.
Label and nameplate pasting: Pasting high-demand electronic equipment labels and nameplates.
SMT furnace shielding: High-temperature resistant tape is used for shielding protection during wave soldering/reflow soldering.
Mobile phone and consumer electronics manufacturing industry:
Bonding of internal structural parts (such as camera modules, speakers, vibration motors, and middle frame bonding).
Pasting of shell decorative parts (metal sheets, glass back panels, logos).
Screen repair and replacement (OCA glue, LOCA glue).
Automotive industry:
Bonding of interior parts (decorative strips, panels, signs, fabrics, leather).
Fixing of exterior signs, trims, and reflective logos.
Wire harness fixing and insulation.
Fixing of internal components of electronic control unit (ECU).
Optical lens assembly.
Architecture and home decoration:
Fixing glass and mirrors (high-viscosity or special mirror tape is required).
Pasting metal/wood/plastic decorative lines and skirtings.
Fixing signs and notice boards.
Temporary shielding protection (such as painting, decoration).
Advertising signs and exhibition displays:
Pasting acrylic letters, PVC letters, and metal letters to walls or exhibition boards.
Fixing exhibition boards, posters, and light box images.
Pasting of traceless hooks (removable).
Industrial manufacturing and packaging:
Fixing of precision instrument panels and components
Manual or automatic mounting? Automation requires high initial adhesion and stable release force.
Industrial manufacturing and packaging:
Fixing of precision instrument panels and components.
Lamination of membrane switch panels.
Packaging sealing (special requirements).
Temporary fixing and positioning.
How to scientifically select double-sided PET tape?
Choosing the right double-sided PET tape is the key to ensuring successful bonding. The following factors need to be considered comprehensively:
Substrate parameters:
Thickness: Affects the final bonding thickness, softness and filling ability. Ultra-thin (0.025-0.05mm) is used for precision electronics; slightly thicker (0.1-0.2mm) provides stronger support or fills tiny gaps.
Color/transparency: Transparent, white, black, matte, etc., selected according to appearance requirements. Optical grade requires high light transmittance.
Tensile strength/modulus: Important for applications that need to resist stress.
Adhesive properties (top priority):
Adhesive type and strength:
Initial adhesion (Tack): The ability to stick quickly. High initial adhesion is required for automated high-speed placement.
Sustaining adhesion: The ability to resist creep under long-term static load.
Peel strength (Peel Adhesion): The ability to resist vertical peel force (90°/180° peeling). Select according to the material of the adherend (metal, glass, plastic) and the required strength (such as low viscosity < 5N/25mm, medium viscosity 5-15N/25mm, high viscosity >15N/25mm).
Adhesive surface energy: High surface energy materials (stainless steel, glass) are easy to adhere; low surface energy materials (PP, PE, PTFE) require specially treated adhesives (such as rubber-based or modified acrylic).
Temperature resistance: Clarify the long-term use temperature of the application environment and the peak temperature that may be encountered (such as SMT reflow soldering). Select a temperature range that both the adhesive and the PET substrate can withstand.
Weather resistance: For outdoor applications, select adhesives that are UV-resistant and resistant to heat and humidity aging.
Special performance requirements: For example:
Removability: No residual glue (such as removable hook tape).
Flame retardancy: Meets UL94 V-0 and other standards (electronic and electrical safety requirements).
Electrical conductivity/thermal conductivity: Achieved by adding special fillers.
Optical transparency: Used for display screen bonding, requiring high light transmittance
Application environment:
Indoor/outdoor?
Static load/dynamic vibration?
Is it exposed to water, oil, or chemicals?
Temperature range and changes?
Does it need to be insulated or conductive?
Processing method:
Is precision die-cutting required? There are requirements for easy peeling and tensile resistance of release paper/film.
Manual or automated mounting? Automation requires high initial adhesion and stable release force.