What is PU coated fabric? Why the jacket can be waterproof after adding PU coating?PU coating, i.e. polyurethane coating, after coating the fabric feel full, elasticity, the surface has a film feeling.PU coated fabric is mainly used for outdoor clothing and military and so on, and its characteristics are mainly by the moisture permeability, abrasion resistance, windproof, soft performance.
PU coated cloth on the form of its coating to points, simply put and can be divided into water-based and solvent-based polyurethane. Solvent-based film-forming properties, strong adhesion with the fabric, high water pressure, more suitable for waterproof and moisture permeable coating. But solvent-based has a certain degree of toxicity and flammability, not environmentally friendly, water-based safety and non-toxic, favourable to environmental protection, but the adhesion with the fabric is poorer than some of the water pressure resistance than solvent-based performance is also a bit weaker.
PU is actually polyurethane, performance is mainly expressed as wear-resistant, solvent-resistant and low-temperature (-30 ℃ below), waterproof and moisture permeability, windproof, soft and other characteristics, in general, for the milky white emulsion, knitted fabrics, plain weave fabrics, non-woven and other fabrics can be compounded into a variety of fabrics or lining, with a variety of different characteristics of the film can be done in two or more than three-layer processing composite. Our usual contact is generally thin coating PU leather products are mainly used for outdoor clothing and bag fabrics PU coating, there are such as; imitation leather (artificial leather), brushed imitation suede and other products are also PU coated products. Polyurethane PU coating can form a lot of multi-functional, high value-added textile products, which are widely used in outdoor apparel, decoration, military and other industries.
PU coating agent is a block polymer consisting of two parts of soft section and hard section repeatedly alternating. Soft part of the PU soft and flexible, composed of polyether or polyester glycol, the size of its molecular weight, but also can affect the softness of the PU; hard part of the PU strength and elasticity of the modulus, composed of a variety of diisocyanate and chain growth agent. The ratio of the two and the structure of the raw material type can determine and affect the performance of the product.
Synthesis method is generally by diisocyanate, polyester diol or polyether diol plus chain growth agent and catalyst, through solution polymerisation or body polymerisation made. In general, granular or powdered forms can be made by polymerisation. Aqueous emulsions can be made by emulsifiers or by self-emulsification with the introduction of hydrophilic groups. Solvent-based according to the need to use different organic solvents made.
Coating process has a dry method, wet method, thermosoluble method, transfer method, adhesive method and other methods, including the dry method of the most applications, the dry method is the coating paste with a coater evenly coated in the base fabric, by heating to make the solvent or water evaporation, the coating on the surface of the fabric to form a thin film, PU thin coatings is a dry method of direct coating of high-grade products, mainly used for apparel fabrics. What is PU coated fabric?PU coating, i.e. polyurethane coating, after coating the fabric feels plump, elastic, and the surface has a film feeling.PU coated fabric is mainly used in outdoor apparel and military, etc., and is mainly characterised by moisture permeability, abrasion resistance, windproof, and softness performance.
The Staneex
Winter High Visibility Jacket is PU coated to effectively block rainwater from entering, thus locking in the heat.
