Core Advantages

•Strong adhesion without delamination, suitable for complex underwater conditions: Optimized adhesive formula tailored for underwater use of fins, forming stable chemical bonding with PP substrate. Room temperature peel strength 4~9N/cm, resistant to seawater immersion, impact, and vibration. No adhesive failure or edge lifting during long-term use in seawater or freshwater environments, effectively solving industry pain points of delamination and detachment in fin overmolding. Matches thermal expansion coefficients of TPE and PP, with minimal bonding strength degradation across a wide temperature range of -50°C to 100°C, suitable for various water temperature scenarios.

•Seawater and corrosion resistance, outstanding durability: Incorporates specialized anti-hydrolysis and anti-seawater corrosion additives, capable of long-term resistance to seawater and pool water (chlorinated) erosion without swelling, aging, or cracking. Excellent weather resistance and UV resistance, maintaining good elasticity and appearance after prolonged exposure to sun and rain, extending fin lifespan and suitable for outdoor water sports scenarios.

•High elasticity for energy-saving and excellent propulsion: Shore hardness 50~60A customizable, soft yet highly resilient with outstanding rebound and deformation recovery. Fins quickly rebound during kicking to generate strong propulsion while reducing leg strain, enhancing comfort and efficiency in diving and swimming. Suitable for various kicking styles like frog kick and flutter kick, meeting needs of both beginners and professional divers.

•Eco-friendly and safe, suitable for all users: Halogen-free, non-toxic, odorless, no harmful leaching, free from heavy metals, phthalates, polycyclic aromatic hydrocarbons (PAHs), and other harmful substances. Compliant with global environmental certifications like RoHS, REACH, EN71-3, ASTM F963. Non-irritating to skin, suitable for adults and children, meeting environmental standards for water sports equipment. 100% recyclable, aligning with green sustainable development principles.

•Easy processing, adaptable to diverse designs: Excellent melt flow, low specific gravity (0.89~0.96g/cm³). Overmolding achievable via two-shot molding or overmolding injection without complex pretreatment. Smooth molding without material accumulation or flash, product surface flat and smooth, burr-free. Suitable for various fin structures like foot pockets, shoe covers, straps, and designs ranging from cartoon to professional. Shrinkage rate controlled at 1.2~1.4%, precise dimensions, no post-polishing needed, significantly improving production efficiency. Sprue material recyclable, reducing production costs.

•Lightweight design, comfortable wear: Leverages lightweight advantage of PP substrate (PP specific gravity 0.9~0.91g/cm³). Finished fins have moderate overall weight with good underwater buoyancy, avoiding leg fatigue from excessive weight. TPE overmolding layer feels soft and skin-friendly, conforming to foot contours for comfortable wear without chafing or pressure points, enhancing long-term wearing experience.