Artificial leather knowledge

　　Artificial leather

　　Artificial leather is a plastic product that looks, feels like leather and can be used instead. It is usually made of fabric as a base, coated with synthetic resin and various plastics.

　　In the 1980s, expensive leather goods were generally unaffordable. In response to market demand, artificial leathers with counterfeit leather were popular and used in clothing and bag making. Such artificial leather clothes and bags with counterfeit leather once filled the streets, satisfying the desire of people to wear leather and skin.

　　People are accustomed to using PVC resin as raw material to produce artificial leather called PVC artificial leather (referred to as artificial leather); artificial leather produced from PU resin is called PU artificial leather (referred to as PU leather): artificial leather produced from PU resin and non-woven fabric It is called PU synthetic leather (referred to as synthetic leather).

　　Classified by purpose

　　Can be divided into two categories of civil and industrial use. Civilian leather: shoe leather, leather for clothes, leather for box, leather for handbags, leather for handbags, glove cart, furniture leather, etc. Industrial leather: vehicle leather, floor leather, etc.

　　Different uses depending on the materials added

　　Using polyvinyl chloride as raw material

　　There are 3 types of products:

　　1 ordinary artificial leather, also known as non-foamed artificial leather. It is made of flat cloth, canvas and recycled cloth, and is directly coated. Since the coating is dense and the paste can penetrate into the pores of the base fabric, the finished product feels hard and wear resistant. Mainly used in the production of wear-resistant bags, construction and industrial accessories.

　　2 foamed artificial leather. Usually, the knitted fabric is used as a base, and the surface layer paste contains a foaming agent and an auxiliary agent thereof, and foams to form a microporous structure during gelation, thereby achieving light weight, fullness and softness. Produced by transfer coating. Used for making gloves, bags, bags, clothing and furniture.

　　3 suede artificial leather. Commonly known as artificial suede. It has a wide variety and a variety of production methods. The microporous surface layer of the artificial leather after gelation can be made into a surfaced suede by grinding with a sanding roller. The coated suede can be obtained by raising and stretching the coating layer through a raising roller. Suitable for use as a toe cap and edging material for sports shoes. A soluble salt (such as a salt) is added to the coating paste, and after the gelation, the salt is dissolved by using water, so that the surface layer is microporous and has a suede feeling. Using the electrostatic flocking method, 0.5 to 1 mm long synthetic fiber linters are planted on a polyvinyl chloride artificial leather coated with a binder, and a flocked leather can be obtained, which is suitable for making packaging bags and decorations.

　　Using polyamide as raw material

　　It is better than moisture-absorbing and hygroscopic than PVC artificial leather, and has a good appearance and feel. It is often used to make boxes and bags.

　　Polyurethane as raw material

　　Varieties developed in the early 1960s. It is made of a polyurethane solution as a base with a raised cloth as a base. The microporous layer obtained by impregnating, coating and solidifying in a water bath with a polyurethane solution is ground to form a polyurethane suede. This artificial leather is soft, wear-resistant, breathable, warm, and feels free from changes in cold and warm. It is suitable for making garments, higher-grade bags, bags and decorative items.

　　Using polyolefin as raw material

　　It is made of low-density polyethylene as the main raw material and calendered. This artificial leather is light, solid and smooth, and is used to make leather bags and handbags.

　　The product should be chosen for leather

　　Manufacturers will reduce the cost by adjusting the thickness of the fabric and the proportion of raw materials according to the properties of the use. Therefore, when buying artificial leather, you must purchase leather from your own products. There have been such cases, a artificial leather is 1 yuan cheaper than b artificial leather, a artificial leather is thicker than b artificial leather, 20 wearable, tough, customers choose b artificial leather in order to reduce their own cost, but after buying it, it is made. The quality of the goods was very poor, and he turned over and said that the quality of the manufacturer was problematic and the product was not good. Therefore, you must ask for the thickness and attributes when purchasing artificial leather.

　　Pvc and pu recognition

　　There are many people in the artificial leather, such as pvc leather and pu leather. I don’t know the difference. I am here to take a trick.

　　Put a small piece of fabric in gasoline for half an hour and then remove it. If it is PVC leather, it will become hard and brittle. If it is PU leather, it will not become hard and brittle.