Production method of artificial leather

Including substrate treatment, rubber preparation, coating, bonding, gel, surface treatment, embossing, cooling, coiling and other processes. There are four main production methods.
Direct coating method
The rubber material is directly coated on the pretreated base cloth with a scraper, and then put into the plasticizing box for gel and plasticization, and then after embossing, cooling and other processes, the finished product is obtained. This method can produce all kinds of cloth base ordinary artificial leather, film artificial leather and foam artificial leather.
Transfer coating method
It is also called indirect coating method. The paste is coated on the carrier (release paper tape or stainless steel tape) with a reverse roller or scraper, and after gelatinizing, the cloth base is compounded on the gel material layer under no tension, and then plasticized, cooled and peeled off from the carrier, and then post-processing is carried out to obtain the finished product. This method is suitable for producing knitted fabric or non-woven fabric based foam artificial leather and ordinary artificial leather.
Calendering method
According to the formula requirements, measure the resin, plasticizer and other ingredients, put them into the kneader, mix them evenly, and then mix them in the internal mixer, open mixer or extruder, It is sent to the three-roller or four-roller calender (see plastic mechanical calender to produce the film with the required thickness and width, and then it is bonded with the pre-heated substrate, and then it is embossed and cooled to obtain the finished product. This method can produce various kinds of artificial leather with different cloth bases. In order to improve the bonding effect of the substrate and the film, a layer of adhesive is often applied on the substrate first.
Extrusion pasting
The resin, plasticizer and other ingredients are mixed evenly in the kneading machine. After being refined, the film is extruded into a certain thickness and width by the extruder, and then bonded with the preheated base cloth on the three-roll molding machine. Then, the finished product is obtained by preheating, pasting, embossing and cooling. This method is used to manufacture thicker products, such as floor leather, conveyor belt, etc.