moncler down coat waterproof and breathable fabrics are mainly the following three

(1) The high-density fabric water repellent finish
 Compact waterproof fabric is achieved by changing the structure of the fabric waterproof and breathable purposes.  Such fabrics are successfully developed the first waterproof and breathable fabric [7], and its mechanism are: water vapor in the air gap between the yarn simple diffusion; capillary transfer between the fiber bundles; in the spread between the individual fibers.  Waterproof fabrics are compact, ultra-fine polyester fibers are mostly used as a raw material [8], this type of fabric, fibers, closely arranged between the yarns of the fabric without water repellent finish in the case of water pressure resistance up to 104-1O5Pa.  Meanwhile, the yarn is formed between the capillary, the capillary effect of the presence of water vapor can be transmitted well.

 Advantages of compact fabric preparation process is simple, the main yarn fineness of the yarn and the changes made clothing drape, moisture permeability is good.  However, the low water pressure resistant fabric, greatly limiting its scope of application.
 (2) laminated fabric
 Also known as thin-film laminated fabric waterproof and breathable fabric paste, which is the functional membrane attached to the fabric, the fabric according to the use of such a functional membrane can be divided into three categories: microporous membrane, dense hydrophilic membrane, micro- Kong hydrophilic membrane binding.  Here, the adhesive also play a very important role in the binder are mainly two: breathable type, continuous coating; not breathable type, only the dot type adhesive, will not damage the moisture permeability, Such fabrics most successful, most notably the United States WLGore's Gore-Tex fabrics [3], it is now recognized as the most advanced on the market for waterproof and breathable fabric, it is the use of polytetrafluoroethylene (PTFE) microporous membrane composite made with the fabric, as the microporous membrane preparation requires special equipment and technology, product processing difficulty, high cost, expensive clothing, its softness, drape, less satisfactory.


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 (3) coated fabrics
 Fabric coating method is carried out directly or indirectly coating the fabric with a waterproof, breathable microporous structure, or by producing it has hydrophilicity obtained [7].  It can be divided into three types: microporous coating, hydrophilic coating, microporous hydrophilic binding assay.

 Coated fabrics lower cost production process, the hydrophilic coating with water as solvent, low cost, less pollution, the hydrophilic coating may be the traditional process.  But organic solvent coating method based system, solvent recovery equipment costs higher, and could easily lead to environmental pollution.  After coating the fabric, drape and softness deteriorated durability is poor waterproofing, poor adhesion to substrate.