Blood culture bottles are used for microbial detection, requiring ultra-hermetic sealing, sterility, and chemical resistance, preventing sample contamination and microbial growth. Traditional rubber stoppers have poor sealing, easy air entry, leading to false detection results, while adhesive bonding introduces chemical residues. DaokeDao laser welding provides a high-reliability sealing solution for medical-grade PP and rubber materials, forming a dense, hermetic weld, with leakage rate ≤0.001ml/min, ensuring sample integrity. The weld has good chemical resistance, adapting to blood culture media erosion, no dissolution or contamination. The process is sterile and particle-free, complying with clinical detection standards, directly entering ethylene oxide sterilization after welding. The equipment supports high-volume production, cycle time 8-10 seconds per unit, production capacity 120 pieces per hour, helping IVD manufacturers improve detection accuracy and reduce false results.