PVC board is an ideal material for producing three-dimensional surface film due to its specific gravity of 1.38 g/cubic centimeter. It exhibits a minimal forming shrinkage range of 0.6-1.5% during the production process. Forming temperature also plays a crucial role, and PVC board can be easily shaped within the range of 160-190 degrees Celsius. Considering these factors, PVC board stands out as a suitable choice for creating high-quality three-dimensional surface films.
Forming characteristics of PVC sheet:
The decomposability of steel at 200 degrees makes it easier to break down. Likewise, copper contact is also simpler to decompose and is resistant to corrosion during the decomposition process. Additionally, stimulant gases play a role in this decomposition procedure. It is worth mentioning that the temperature range required for the formation of these substances is quite limited.
For optimal use of screw injector nozzle, it is recommended to keep the aperture large to avoid stagnant dead angles. It is recommended to avoid using inserts, however, if necessary, they should be preheated to ensure proper functioning.
Plastics can undergo pre-drying to enhance their fluidity and prevent bubble formation, particularly when dealing with amorphous materials with low moisture absorption and poor fluidity. To achieve this, it is advisable to use a gating system in the mold that is short and thick, with a large gate section and no dead angles. Additionally, the mold should be adequately cooled, and the surface should be treated with chromium plating. By following these measures, the fluidity of the plastic can be improved, and the occurrence of bubbles can be minimized.
Special equipment and molds can be utilized due to the corrosiveness and fluidity of the substance. Additives, in varying types and quantities, need to be included to enhance the products.
Polyvinyl Chloride (PVC) board, also known as Polyvinylchlorid, is primarily composed of polyvinyl chloride, granting it exceptional characteristics such as vibrant color, remarkable resistance to corrosion, and impressive durability. However, it's essential to note that during the manufacturing process, certain toxic additives like plasticizers and anti-aging agents are incorporated to augment its heat resistance, toughness, and ductility. Consequently, PVC products should not be utilized for storing food or medicines.
PVC board is recognized as one of the most popular and versatile synthetic materials worldwide. Due to its exceptional properties and various applications, it secures the second position globally among synthetic materials. In 1995, Europe alone witnessed the production of around 5 million tons of PVC panels, and its consumption surpassed production, reaching approximately 5.3 million tons.
