Development of waterproof breathable membrane
First, shoes, clothing, tents, sleeping bags early in order to waterproof, windproof, just on the fabric cover waterproof glue, for waterproofing purposes, this material and processing products, can withstand a certain amount of pressure, but certainly not breathable, waterproof and poor ventilation.
Second generation, PU film, this is a very good water pressure-resistant materials, fabric composite together with the product, you can do better water stability, its high-end products may have some moisture permeability function, but the effect is far from ideal. For example: KING-TEX available in the market.
Third and TPU film in PU thin films based on developed than breathable PU membrane, permeability, water resistance improvement, is to replace the PU membrane of a waterproof breathable membrane, there are TING-TEX, KING-TEX, etc.
Fourth generation, EPTFE (PTFE) is the latest generation of waterproof, breathable materials, world class factory using this material, combined with their company's research and development of treatment technology developed the expertise of different brands of EPTFE composite fabric, waterproof, breathable performance is one of the most outstanding. Performed well in the international market are: GORE-TEX (United States Gore developed, open is outdoor equipment company selected by all over the world), OMNI-TECH (United States COLUMBIA developed only for use by its own brand), FIRST-TEX (United States FBA international group, used only in the specified brand 2014 United States first outdoor brand in the use of such material), EVENT (in recent years, the rapid rise of the waterproof and breathable specialty materials business development), TEXPORE (Germany JACKWOLFSKIN developed only for use by its own brand) and other international well-known material or leading outdoor brand company exclusive development of waterproof and breathable material.