The basic idea of Pet Preform Mould is to insert molten liquid plastic into a ready-made mold, such as a mold for a bottle. Then let it cool and then remove the mold to expose the plastic bottle.
Plastic molding can also be customized for a wide variety of plastic products, including: garden pots, cabinets, office trays and boxes, obstacles, roadblocks and traffic signs, as well as products and promotional displays.
Gas assisted molding
Also known as gas injection molding is used to make hollow plastic parts inside. Then, a part of the plastic is injected, and then the mold cavity is filled with a high pressure gas.
2. Rotary casting
A hollow mold packaged in powder plastic is attached to a tubular spoke extending from the central hub. The mold rotates on different axes at the same time. The hub swings the entire mold into a closed furnace chamber, causing the powder to melt and stick to the inside of the tool. As the mold slowly turns, the tool enters the cooling chamber. Here, water spray hardens the plastic into a hollow portion. In this type of plastic molding, the processing cost is low and the parts are expensive. The cycle time takes approximately 40 - 45 minutes.
3. Structural foam molding
Structural foam molding is a plastic molding process commonly used for parts that require thicker walls than standard injection molding. Adding a small amount of nitrogen or a chemical blowing agent to the plastic material will thicken the wall thickness. Foaming occurs when molten plastic material enters the mold cavity. A thin plastic skin is formed and cured in the mold wall. This type of plastic molding can be used with any injection moldable thermoplastic.
4. Thermoforming
In this plastic molding process, the pre-extruded rigid plastic sheet is heated horizontally and sucked into a hollow, one-piece tool. When the thermoplastic is cured, its shape is consistent with the shape of the mold.
Processing costs are usually low, and the price of parts on the machine varies.
Pet Preforms molding is a very technical process. It requires experts in this type of manufacturing industry to be competitive in the market. Therefore, before embarking on this work, a very scientific and systematic study should be conducted first.