Respirator filter housing seals ensure filter installation tightness, requiring good air tightness, soft texture and wear resistance, ensuring efficient filtration of air impurities, no air leakage. Traditional heat sealing has uneven welds, easy air leakage, reducing filtration efficiency. DaokeDao laser welding provides a smooth and airtight connection scheme for medical-grade PP and non-woven fabric materials, forming a flexible and dense weld, air leakage rate ≤0.005m³/h, ensuring complete sealing of the filter, improving air filtration efficiency. The weld has good flexibility, adapts to respirator wearing deformation, no cracking or air leakage. The process is clean and particle-free, no contamination of filter elements, complying with medical respiratory device safety standards. The equipment supports continuous production, with high efficiency, helping respirator manufacturers improve product performance and ensure user respiratory safety.