1.Metal aluminum wire
It is made of metal aluminum sheets. The bending effect of the nose strip made of this material is good, but it is easy to make the human body suffer damage due to the bending strength, and it is difficult to separate and recycle the waste masks after use.
The material of aluminium nose wire for masks is different from aluminium alloy. This material has the advantages of anti-rust, anti-corrosion, and high brightness. The aluminum strip has uniform surface holes, good straightness, and stable size. It also has high strength, good toughness, and continuous bending with bending equipment. Aluminium nose wire has excellent adhesion, excellent sealing effect, long service life, and high demand. It is often used in N95, N100, R95, P95, FFP2, FFP3, and other mask models.
2. Polyolefin polymer material covered with galvanized fine iron wire
This nose bar layer is a layer of polyolefin polymer material wrapped on a galvanized fine iron wire with a diameter of 0.45mm-0.55mm. At present, most domestic mask factories use this type with high capacity. This production principle is the same as wire and cable processing.
3. All-plastic nose wire
This kind of nose strip is mainly made of modified PE, PP, and other materials extruded after drying and stretched to cool and set. It is then packed into rolls by traction machine, where the toughness and flexibility of PE materials are a bit more ideal. The all-plastic nose strip has good hardness, impact resistance, tensile resistance, good extrusion performance in the production process, low shrinkage rate, and good dimensional stability after moulding.