Polyethylene Terephthalate (PET) tape, also known as polyester tape, is a highly crystalline polymer that appears milky white or light yellow in color. Its surface is smooth and glossy, characterized by its chemical name, polyethylene terephthalate, and commonly referred to as PET resin.
Structure of PET Tape
PET tape is composed of a flexible PET polyester film as its substrate, coated with high-performance pressure-sensitive adhesive on one or both sides, also known as PET high-temperature tape.
PET tape exhibits excellent peel strength, and the viscosity can be customized according to specific application requirements. The adhesive coatings typically consist of two types: acrylic adhesive and silicone adhesive, with silicone adhesive being more expensive than acrylic adhesive.
Characteristics of PET Tape
PET tape can be customized in terms of its physical properties and color according to customer requirements. Colors available include red, transparent, yellow, black, dark green, light green, etc.
Adhesive strength can be categorized into ultra-high adhesion, high adhesion, medium adhesion, low adhesion, and ultra-low adhesion. Common thickness specifications range from 0.05 to 0.1mm.
PET tape demonstrates excellent dimensional stability, thermal stability, chemical stability, good insulation properties, good adhesion, initial tack, and holding power. It can be used over a wider temperature range and in harsh environments.
Acrylic adhesive-based PET products exhibit long-term temperature resistance of 100-120°C and short-term temperature resistance up to 140-150°C. Silicone adhesive-based PET products offer long-term temperature resistance of 140-150°C and short-term temperature resistance up to 180-200°C.
Applications of PET Tape
With the aforementioned characteristics, PET tape finds various industrial applications, including:
- PCB/FPC (Printed Circuit Board/Flexible Printed Circuit) industry: for applications such as gold plating protection, OSP (Organic Solderability Preservative) gold finger protection, reinforcement, silver plating, gold plating edge wrapping, light shielding protection, aluminum substrate protection, gold plating tape bonding, ink printing screen fixing, and insulation wrapping and fixing of electronic products.
- Painting and baking industry: for masking in automotive, electrical, and mechanical painting applications.
- Optoelectronic industry.
- Other industries.
In conclusion, PET tape offers versatile properties and is widely used in various industrial sectors for its excellent performance and reliability in demanding applications.
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