一,Material Characteristics
- PVC (Polyvinyl Chloride): It is a common material for various types of plastic products with good weather resistance, flame retardancy and insulation, widely used in construction, wire and cable, packaging materials and other fields.
- TPO (thermoplastic polyolefin): a thermoplastic elastomer with excellent weather resistance, chemical resistance and elasticity, commonly used in roofing materials, automobile interiors and so on.
- TPU (thermoplastic polyurethane): a thermoplastic elastomer with excellent elasticity and abrasion resistance, with good abrasion resistance, tear strength and elasticity, widely used in shoes, conveyor belts, medical equipment and other fields.
二,Working Principle and Application of Desktop Calender
- Desktop calender heats, plasticizes and calenders the plastic raw material through a series of precise roller combinations to finally form the desired film, sheet or plate.
- Heating and plasticizing: the raw material is heated to the appropriate temperature in the calender, softened and plasticized.
- Calendering and forming: the plasticized material is calendered to the required thickness and width through the gap between the rollers.
- Cooling and curing: the calendered material passes through a cooling unit, which rapidly cools down and cures it to maintain its shape and dimensional stability.
三,Material Selection and Processing Considerations
- Material Selection: Select the appropriate PVC, TPO or TPU granules or powders according to the specific application requirements. Consider the physical properties of the material, chemical stability and processing temperature and other factors.
- Processing temperature: Strictly control the heating temperature to avoid too high or too low leading to material degradation or poor plasticization.
- Roller gap adjustment: According to the thickness of the desired product, precisely adjust the gap between the rollers to ensure calendering precision.
- Cooling rate: Reasonable cooling rate helps to maintain the dimensional stability and surface finish of the product.
