Is it better to use PP or PE for the nose bridge wire?


The built-in nose bridge of the mask has single-core, double-core and all-plastic ones. No matter which kind of plastic materials are used, some manufacturers use PE plastic materials, and some use PP plastic materials.

Below we talk about the advantages and disadvantages of PE and PP:

PP is polyethylene: odorless, non-toxic, has excellent low temperature resistance (the lowest use temperature can reach -70-100), can withstand most acids and alkalis, is insoluble in common solvents at room temperature, and has low water absorption. , Electrical insulation is excellent; but polyethylene is very sensitive to environmental stress (chemical and mechanical effects), and has poor heat aging resistance.

PP material is polyolefin: non-toxic, tasteless, its strength, stiffness, hardness, heat resistance are better than polyethylene, can be used at about 100 degrees. It has good electrical properties and high-frequency insulation is not affected by humidity, but It becomes brittle, non-wearing, and easy to age at low temperatures.


For the nose bridge wire, both are fine. PP material has good flexibility. This material, like metal wire, bends and deforms with the action of external force, and can maintain its excellent performance.