The dry production line of synthetic leather is made by coating PU resin on release paper with various lines, drying and sticking it, and then bonding the base cloth (knitted fabric and non-woven fabric) together, drying and other processes, so that the pattern of the product is the same as that of various release papers, and then printing, so that it is comparable to the real leather in hand feel, toughness and appearance.
product usage
Shoes, wallets, furniture, clothing, sports equipment, etc.
mechanical properties
1, high precision coater
Equipped with automatic feeding system, the accuracy is automatically monitored and controlled, and the coating accuracy is even and accurate.
2. Bonding machine
Specially designed, the base cloth is rolled out without tension, which makes the base cloth flat and stable in tension. The bonding equipment has two functions of strong bonding and hanging bonding (soft bonding), which makes the base fabric and products have better quality and higher yield.
3. Hot air circulation drying furnace device
Fully automatic computer temperature control, accurate average temperature, good heat preservation effect and saving heat source.
4, cutting center coiler
Cutting and receiving materials are safe and efficient, easy to operate and reduce the loss of finished products.
5. Driving tension
Full-automatic tension pneumatic control system, stable tension, low probability of paper breakage.
technical parameter
1, mechanical wheel width max:1700 mm;
2. Maximum product width:1450mm;
3. Maximum mechanical speed: 30m/min；;
4. Oven length: 10m, 15m and 25m.
5. Transmission system: frequency conversion motor is linked with the whole line;
6. Unit composition: agreed by the user when ordering;
7. Total supporting power: 150kw.
Use:
The production line is composed of uncoiling, gluing, cloth collection, deviation adjustment, drying, post-traction, cloth combination, coiling, exhaust and control system. Mainly used for rubber sheet gluing operation. It can meet the requirements of single coating, sleeve coating and cloth combination.
Performance characteristics:
The gap forming method is adopted. When the base cloth passes through the gap formed between the coating roller and the coating blade, the slurry is coated on the base cloth. Closed-loop automatic tracking and digital display of tool clearance. It is compact in structure, advanced in control, safe and explosion-proof, and fully functional. Temperature control has PID calculus function, operation control adopts programmable controller (PLC), and speed control system adopts frequency converter, which has high control precision, stable operation and intuitive and clear digital display of operation speed. The unique heating and drying system has high thermal efficiency, which ensures the high productivity of the whole system.
Main technical parameters
1, effective width of roll surface: 1800-2200mm.
2. Glue coating width (maximum): 1600-2000mm.
3. Glue coating speed: 3 ~ 30m/min variable frequency speed regulation, running forward and backward.
4. Coating thickness: minimum value: 0. 1 mm, maximum value: 0.8 mm.
5. Glue coating accuracy: 0. 0 1 mm
6. Scraper form: comma knife
7. Diameter of coating roller: φ 400 mm
8. Maximum clearance between coating scraper and roller surface: 80mm.
9. Operation requirements: single coating, set coating and cloth combination.
10, maximum length of coating: 50-80m.
1 1, uncoiling diameter (maximum): φ 400 mm
12, winding diameter (maximum): φ 700 mm
Wet method:
Firstly, uniformly covering a layer of PU resin on the textile fiber cloth, then immersing the textile fiber cloth covered with PU resin into a curing tank containing water, embossing the PU resin layer with a mold engraved with patterns on the surface when the PU resin layer is in a semi-cured state, then taking out the textile fiber cloth, entering a water washing tank, and further curing to obtain PU synthetic leather with three-dimensional patterns on the surface; The invention can reduce the production cost of synthetic leather and simplify the production process; Moreover, the grain of the processed synthetic leather has a strong three-dimensional effect, which is closer to the natural texture of natural fur.
Sovereignty terms
Claim 1. A processing method of wet-process PU synthetic leather is characterized by comprising the following steps: firstly, uniformly covering a layer of PU resin on textile fiber cloth, then immersing the textile fiber cloth covered with PU resin in a curing tank filled with water, embossing the PU resin layer with a mold engraved with a pattern on the surface when the PU resin layer is in a semi-curing state, and then taking out the textile fiber cloth to enter a washing tank for further curing.
Wet polyvinyl butyral synthetic leather
abstract
A polyvinyl butyral synthetic leather is made of polyvinyl butyral resin as the main raw material and synthetic fiber nonwoven fabric impregnated with composite latex. Good rigidity, high strength, good air permeability and good water resistance, and can replace natural leather and other substitute materials to make leather shoes main heel and shoe lining. Do not deform when meeting water, and keep shoes beautiful and comfortable. And make