PVC resin for synthetic leater
PVC resin for synthetic leater,
PVC for Synthetic leather，PVC Leather raw material，PVC resin for leather,
PVC leather fabric is very similar to PU leather fabric. Instead of polyurethane, PVC leather fabric is made by combining polyvinylchloride with stabilizers (to protect), plasticizers (to soften) and lubricants (to make flexible), and then applying to a base material.
PVC-based leather is a major alternative to real leather. It is produced by replacing the hydrogen group with the chloride group in the vinyl group. This product is then blended with chemicals to create synthetic leather. The major raw material used in this process is PVC. PVC-based leather was the first synthetic leather created in the 1920s. It is considered to be high strength and resistive to various climatic conditions. It is an easy-to-maintain and clean material and is therefore highly preferred in various industries.
PVC leather manufacturing process
1.the first way is calendering way.
so firstly we should mix the raw material PVC and pigment etc, and make the material in a good solid shape.
2.then we coated the mixed material on the fabric ,until this procedure the semi-finished material we call base material.
so the base material including 2 layers: pvc layer on the surface and backing is fabric.
then the base material will be sent into a foaming machine,which is a long production line with high temperature,the mixed material will foaming here,so the pvc will be thicker,the thickness of pvc layer can be double of the base pvc layer.
after foaming, the material will be embossed with texture,here we use embossing roller which has texture on the roller,you can think it as a mould,texture on the roller will be transfered to the surface of pvc layer,then we can got different texture.
then we will do surface treatment,like adjust the color or printing some drawings on the surface.
below is the production flow of the pvc leather
Features
PVC is one of the most widely used thermoplastic resins. It can be used to make products with high hardness and strength, such as pipes and fittings, profiled doors, windows and packaging sheets. It can also make soft products, such as films, sheets, electrical wires and cables, floorboards and synthetic leather, by addition of plasticizers
Parameters
| Grades | QS-650 | S-700 | S-800 | S-1000 | QS-800F | QS-1000F | QS-1050P | |
| Average polymerization degree | 600-700 | 650-750 | 750-850 | 970-1070 | 600-700 | 950-1050 | 1000-1100 | |
| Apparent density, g/ml | 0.53-0.60 | 0.52-0.62 | 0.53-0.61 | 0.48-0.58 | 0.53-0.60 | ≥0.49 | 0.51-0.57 | |
| Volatiles content (water included), %, ≤ | 0.4 | 0.30 | 0.20 | 0.30 | 0.40 | 0.3 | 0.3 | |
| Plasticizer absorption of 100g resin, g, ≥ | 15 | 14 | 16 | 20 | 15 | 24 | 21 | |
| VCM residual, mg/kg ≤ | 5 | 5 | 3 | 5 | 5 | 5 | 5 | |
| Screenings % | 0.025 mm mesh % ≤ | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 0.063m mesh % ≥ | 95 | 95 | 95 | 95 | 95 | 95 | 95 | |
| Fish eye number, No./400cm2, ≤ | 30 | 30 | 20 | 20 | 30 | 20 | 20 | |
| Number of impurity particles, No., ≤ | 20 | 20 | 16 | 16 | 20 | 16 | 16 | |
| Whiteness (160ºC, 10 minutes later), %, ≥ | 78 | 75 | 75 | 78 | 78 | 80 | 80 | |
| Applications | Injection Molding Materials, Pipes Materials, Calendering Materials, Rigid Foaming Profiles, Building Sheet Extrusion Rigid Profile | Half-rigid Sheet, Plates, Floor Materials, Linning Epidural, Parts of Electric Devices, Automotive Parts | Transparent film, packageing, cardboard,cabinets and floors, toy, bottles and containers | Sheets, Artificial Leathers, Pipes Materials, Profiles, Bellows, Cable Protective Pipes, Packaging Films | Extrusion Materials, Electric Wires, Cable Materials, Soft Films and Plates | Sheets, Calendering Materials, Pipes Calendering Tools, Insulating Materials of Wires and Cables | Irrigation Pipes, Drinking Water Tubes, Foam-core Pipes, Sewer Pipes, Wire Pipes, Rigid Profiles | |
