1. The cost is different
Artificial leather is the earliest substitute for leather fabrics. It is made of PVC material, plasticizers and other auxiliaries, which are calendered and compounded on cloth. Its advantages are low price, rich colors and various patterns. Hard and brittle. PU synthetic leather is used to replace PVC artificial leather, and the price is higher than that of PVC artificial leather.
2. Different chemical structures
In terms of chemical structure, it is closer to leather fabrics. PU artificial leather does not need plasticizers to achieve soft characteristics, so it will not become hard and brittle. At the same time, it has the advantages of rich colors and various patterns. Leather fabrics are cheap, so they are widely welcomed by consumers.
3. Different ways of distinguishing
Leather fabrics, PVC artificial leather, and PU synthetic leather can generally be distinguished in two ways: one is to look at the back of the fabric. The back of PVC artificial leather and PU synthetic leather is generally cloth base (or knitted cloth base) that can be seen with the eyes. The second is to use the method of burning and melting to distinguish: take a small piece of fabric and burn it with fire, the leather fabric will not melt, while the PVC artificial leather and PU synthetic leather will melt.
The difference between PVC artificial leather and PU synthetic leather can be distinguished by the method of soaking in gasoline: take a small piece of fabric, put it in gasoline for half an hour and take it out, the PVC artificial leather will become hard and brittle, if it is PU synthetic leather, it will not Harden and brittle.
Speaking of leather, it is no stranger to modern people. Leather is made of animal skin after physical and chemical processing. It is a non-perishable animal skin for people to use. It has many excellent properties, so it is obtained. widely used.
With the continuous increase of human demand for leather, the limited animal leather and expensive price prompted humans to invent a substitute, and artificial leather was born.
In fact, leather refers to two kinds of things. Leather refers to hairy, and leather refers to non-hairy ones, so fur coats are those with hairs, while suits and shoes are those leathers without hairs, so it is easy to understand why Artificial leather is no longer called artificial leather.
Artificial leather is a kind of leather product that imitates animal leather and uses plastic materials to imitate it. It is very similar in feel and appearance. It is usually made of fabric after knitting as the base cloth, and then coated with synthetic resin and some plastic additives on the surface. completed.
Artificial leather mainly includes PVC artificial leather, PU artificial leather, and synthetic leather. Artificial leather is mainly used in clothing, luggage, ball products and other industries. Artificial leather has the characteristics of many colors, good waterproof performance, and low price.
In the distant ancient times, in order to survive, human beings began to slaughter animals, "eat their meat and sleep on their skins" instinctively use animal skins to resist the cold. With the development of productivity, human beings began to tan and sew their furs. Fur is no longer limited to clothing, and has begun to be used in daily necessities, shoes and various weapons.
With the rise of the modern industrial revolution, the technology continues to mature, the production capacity continues to increase, and the demand continues to increase, and the number of animals used to make leather is far from meeting the demand. In this case and the development of new materials, artificial leather was invented.
Artificial leather was first inspired by the Indians who applied rubber on cloth as a rainproof cloth. In the early 20th century, a cloth made of nitrocellulose sol was coated on the fabric, which was the earliest artificial leather.
In 1964, American companies first produced commercial synthetic leather, and then Japanese companies produced multi-layer synthetic leather. With the increasing variety of artificial leather, artificial leather also ushered in a stage of rapid development.
With the emergence of microfiber materials, this can better imitate the internal structure of animal leather and can almost completely replace animal leather, which also makes artificial leather more and more widely used, and artificial leather can also be used in more high-end products. field.
The manufacturing process of synthetic leather
Synthetic leather is a kind of artificial leather. It simulates the composition and structure of natural leather and is used as a plastic product to replace natural leather. It is close to natural leather and is widely used in various industries to see how synthetic leather is made.
First, put various raw materials, such as polyurethane resin, wood powder, and solvent (DMF) into a mixer according to a certain proportion, and make these raw materials into a mixed solution. These mixed solutions are also removed by a deaerator and a filter screen for Impurities and air bubbles.
The rolled base cloth is pulled out from the reel, passed through the coating tank, and the mixed slurry is coated on the base cloth, and the coating is thinned by a squeeze roller and the coating is uniformly solidified on the base cloth.
According to the color of the synthetic leather, the toner is mixed into a liquid according to the proportion and is re-coated on the base fabric through a roller. The synthetic leather is drawn through the textured patterned roller, and the surface of the synthetic leather will form a texture on the surface under the rolling of the patterned roller.
The base cloth with the coating is washed with water to replace the coating with water, and the polyurethane resin will slowly solidify, thereby forming a porous film on the surface. After drying at 120 degrees Celsius, the synthetic leather can be collected on the reel. .
The production technology of artificial leather seems simple, but it spans technologies in many fields such as textiles and plastics. China is a big country in the production and consumption of artificial leather. The artificial leather industry will involve many upstream and downstream industries, and it has also made great contributions to the Chinese economy. contribute.
Great achievements have also been made in the invention and application of a new generation of microfiber artificial leather technology, but there are also many problems such as environmental pollution, excess production capacity, and poor product quality. The application of artificial leather and synthetic leather has involved all aspects of people's lives, and there is also a broad market demand. With the development of science and technology and technological progress, ultrasonic technology, electronic technology, microwave, and high voltage, and other high-tech, will be widely used in the field of artificial leather.
Glossy environmentally friendly recycled artificial leather
It is suitable for down padded jackets and slim stretch pants. The advantages are soft, delicate, smooth and very comfortable.