Car Filter Hot Melt Adhesive

TH-173 is a premium-grade car filter hot melt adhesive formulated with a styrene block copolymer (SBC) base, specifically engineered for bonding air filter frames in automotive and general industrial applications. This specialized adhesive addresses the critical need for post-bonding flexibility, making it ideal for filtration systems subject to vibration, thermal cycling, or mechanical stress. Its SBC composition provides an exceptional balance of adhesion and elastomeric properties that traditional hot melts cannot match, ensuring durable frame-to-media assembly even under demanding conditions.

As an environmentally responsible solution, TH-173 is manufactured as a green product with minimal volatile organic compound (VOC) emissions and is virtually odorless during both application and service life. This eco-friendly formulation ensures a safer, more pleasant working environment for production personnel while eliminating concerns about odor transfer to vehicle interiors or sensitive air spaces. The clean-running adhesive also reduces carbon buildup and maintenance frequency on hot melt dispensing equipment, contributing to improved operational efficiency and lower total cost of ownership.

The defining advantage of TH-173 lies in its outstanding flexibility, which persists across an exceptionally wide temperature range. Unlike conventional rigid hot melts that can crack, fracture, or delaminate when filter frames flex, this product maintains a resilient, pliable bond that dynamically moves with the substrate. This makes it the perfect implementation solution for pleated filter elements, curved or irregular frame geometries, and applications where the filter assembly experiences constant dimensional changes or dynamic loads during normal operation, effectively preventing premature failure at the bond line.

Technical performance specifications underscore its reliability in harsh environments. The adhesive exhibits a softening point of 136±5°C, which guarantees excellent heat resistance for under-hood applications, high-airflow temperature conditions, and continuous operation in hot climate zones. This thermal stability ensures the adhesive retains its structural integrity without slumping, creeping, or losing cohesion under elevated temperatures. Simultaneously, the inherent elastomeric nature of SBC chemistry preserves critical low-temperature flexibility, preventing embrittlement and maintaining seal integrity in freezing conditions.

With a melt viscosity of 11500±2000cps at 170°C, TH-173 is classified as a high melt viscosity product, delivering substantial cohesive strength and superior gap-filling capabilities. This high viscosity translates to robust, impact-resistant bonds capable of withstanding significant mechanical stresses during filter installation, routine service handling, and prolonged operational life. The strong internal cohesion also minimizes adhesive stringing and transfer during high-speed automated production, enabling clean, precise application and consistent bead geometry for optimized bonding performance.

TH-173 car filter hot melt adhesive represents a comprehensive solution that merges ecological responsibility with advanced engineering performance. It is specifically recommended for automotive cabin air filters, heavy-duty engine intake filters, HVAC filtration units, and industrial dust collector applications where frame flexibility is paramount. The product processes efficiently on standard wheel, extrusion hot melt equipment while delivering long-term reliability, reduced warranty claims, and superior end-use performance in the most demanding filtration environments.

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