Keywords: High-performance labels; Pressure-sensitive adhesive; SIS; SBS; SEBS; SEPS; SSBR I. Core New Requirements for High-Performance Labels With the upgrading of scenarios such as high-end manufacturing and logistics traceability, high-performance labels have evolved beyond basic identification functions and now feature four core new requirements to adapt to harsh application environments. First, upgraded weather and abrasion resistance: they must withstand frequent friction and scratching without ink fading or damage, suitable for precision manufacturing scenarios such as high-end electronics and automotive components. Second, wide-temperature adaptability: they must maintain stable adhesion at extreme temperatures ranging from −40°C to 80°C, meeting the needs of outdoor logistics, low-temperature storage, high-temperature production workshops and other environments. Third, sustained adhesion and clean removal: they must stay attached for a long time without falling off and leave no residual adhesive upon peeling, avoiding contamination on the surfaces of high-end products. Fourth, functional integration: some labels must also possess antistatic, waterproof and chemical corrosion resistance properties, adapting to complex traceability and high-end identification scenarios. II. Composition and Adaptation Logic of SBC Adhesives The pressure-sensitive adhesive for high-performance labels uses SBC as its core base material and adopts a composite system of "main resin + modified components". This system precisely matches the new requirements of labels: the main resin provides basic adhesion, while the modified additives compensate for performance weaknesses, achieving complementary advantages. 1.Main Resin: Core Functions of SIS SIS serves as the main component of the adhesive, with the core function of providing initial tack and flexibility to meet the basic bonding requirements of labels. Its properties must meet the following criteria: High mid-block (isoprene segment) content to ensure excellent flexibility and initial tack, enabling adhesion to surfaces of different materials; Low molecular weight design to improve the fluidity of the adhesive for easier coating and processing, while enhancing initial tack to ensure fast, secure bonding of labels and lay the foundation for basic adhesion. 2.Matching Modifiers: Targeted Performance Improvement To meet the new requirements for weather resistance, temperature resistance and strength, four modifiers — SBS, SEBS, SEPS and SSBR — are used in combination, each with distinct focuses and synergistic effects: SBS: Mainly improves the tensile strength and heat resistance of the adhesive, compensating for the insufficient heat resistance of SIS. It prevents label softening and delamination under high temperatures, making it suitable for medium high temperature environments such as high end manufacturing workshops. SEBS / SEPS: Core functions are to enhance aging resistance and temperature resistance. Their hydrogenated structure significantly improves UV and oxidation resistance, while expanding the operating temperature range. This ensures long term performance without degradation or failure in outdoor and extreme temperature conditions, ideal for long term applications such as logistics traceability.