Coating and lamination China lamination fabric manufacturers are increasingly important technologies that increase the value of industrial textiles. Coating and lamination enhance and expand the range of functional properties of textiles. As the applications of technical textiles become more diverse, the use of these technologies is growing rapidly. They are two functional processes for proper finishing of textile materials. Cheap fabric structures can be coated or laminated to provide higher added value to end users and higher profit margins for manufacturers. This article deals with fabric preparation, methods of use, application areas, required tests, and market prospects for coating and lamination. Coated fabrics are engineered composite materials made of a combination of fabric and polymer coating applied to the surface of the fabric. The polymer coating gives the fabric new properties, such as impermeability to dust particles, liquids and gases, and can also improve existing physical properties, such as the abrasion resistance of the fabric.
Fabric components usually determine tear strength and tensile strength, elongation and dimensional stability, while polymers mainly control chemical properties, abrasion resistance, and permeability to liquids and gases. However, many properties are determined by the combination of these two components. The required properties of the final product must be carefully considered, and the base fabric and polymer must be carefully selected. Coated textiles are defined as materials consisting of two or more layers, where at least one layer is a fabric and at least one layer is a substantially continuous polymer layer. The layers are tightly bonded together by the added adhesive or the adhesive properties of one or more constituent layers. In other words, it is described as a woven fabric that forms one or more layers of adhesive coating material in situ on one or both surfaces. Coated fabrics can be used as textile coatings and the key to successful lamination depends on the application of appropriate technology using modern machinery.
Machine productivity is of course important, but important factors to consider include the flexibility of production speed and the versatility of coating laminating methods, as well as a high level of process monitoring, process control and automation to meet the required technical specifications. Membranes are extremely thin films made of polymer materials. They are designed in such a way that they are highly resistant to the penetration of liquid water, but allow water vapor to pass. Films have the advantage of 100% coverage over lightweight fabrics; they are generally completely impermeable to liquids and gases, and they also have an excellent barrier to dust and other particles. Film fabric laminates can be used to make sails, hot air balloons and airships. The film can be used to produce reflective surfaces, and its efficiency is much higher than that of fabrics. They have two types of membranes, microporous membranes and hydrophilic membranes. Microporous membrane.The first and perhaps the most famous microporous membrane developed and introduced by.
This is a film of expanded polytetrafluoroethylene polymer. The latest Gore-Tex film is a film that is said to contain more than 9 billion pores per square inch. These pores are actually times smaller than water droplets, but 700 times larger than water vapor molecules. Other manufacturers also make similar membranes based on microporous polyvinylidene fluoride cast directly onto the fabric. The hydrophobicity and small pore size of the polymer require very high pressure to cause water penetration. Hydrophilic membranes are very thin membranes of chemically modified polyester or polyurethane without pores, so they are sometimes referred to as non-porous membranes. Water vapor from sweat can diffuse through the membrane in a large amount. Polyester or polyurethane polymers are modified by incorporating up to 40% by weight of polyethylene oxide. Poly ethylene oxide constitutes the hydrophilic part of the film by forming part of the amorphous region of the polyurethane polymer system. It has a low energy affinity for water molecules, which is essential for the rapid diffusion of water vapor. The film is laminated to the textile material by chemical or thermal bonding.Special films are widely used as protective clothing, as a waterproof and breathable moisture barrier. They are also used in footwear and medical applications.
