The main function of Vents?

Vents are an application of membrane separations. It is a new separation method that utilizes a specially manufactured selectively breathable membrane to separate and filter mixtures under the action of an external driving force. This membrane has the property that some substances can pass through it and some substances cannot pass through it. From the beginning of the 1960s, membrane separation technology rose rapidly. At present, there are mainly PTFE, Nylon, PES, PVDF, PP, NC, MCE, PETE and other filter membranes. Among them, PTFE breathable field adopts superior chemical stability and natural hydrophobicity. sex.

Vents are mainly used in automotive, medical, environmental monitoring, packaging, electronic sensor protection and other fields. Vents are mainly used for waterproof and breathable clothing. It is called "breathable material" abroad.

Microfiltration membranes are mainly used for gas-permeable membranes, with a pore size between 0.1-10 μm. For breathable membranes, there are two very important values: water inlet pressure and air permeability. Generally speaking, there is a competitive relationship between the two. High air permeability is considered low water pressure. Vents mainly use hydrophobic membranes and hydrophobic membranes, and most of them use hydrophobic membranes. ePTFE is naturally hydrophobic and oleophobic, but when it encounters some low-surface alcohols, detergents, lubricants, and other liquids, it becomes wet. The surface of the oleophobic membrane can be lowered to resist the penetration of these liquids.

At present, ePTFE venting membranes are mainly used for automotive venting, medical venting, electronic sensor venting, and packaging venting, including home packaging, agricultural packaging, and industrial packaging.