Summary:The main components of a Preform Mould are made of steel S136 or P20. The steel is hardened at a temperature of HRC45-48...
The main components of a Preform Mould are made of steel S136 or P20. The steel is hardened at a temperature of HRC45-48 by a German vacuum stove. Several machine tools imported from Japan and America are used in the production process. The main feature of a perform mould is its accuracy and precision. This quality is essential for producing successful products. Here are some features of a good perform mould.
A preform mould must hold at least 2.5 million injections to ensure consistency. During the process of injection, a preform cools down from its melt density of 1.15 g/cm3 to its solid density of 1.33 g/cm3. The cooling process during this hold time is extremely effective because the melt is pushed against the cold cavity walls. In fact, the hold time is between 6 and 8 percent of the entire stroke, but it differs from preform to preform depending on the thickness of the walls.
The design of a PET preform mould must have both functional strength and a high sales appeal. A good mould must also be competitively priced, and have the features that the customer wants. The steel used and the processes used for building the mould must be of the highest quality, and the process of sinking and threading the mould should be a perfect fit for the purpose. Water channels that are specially processed to reduce overall cycle time and minimise the possibility of jamming are also important.
A plastics engineer must have a complete understanding of the design process for the PET preform mould. This is based on knowledge of materials, technique, production schedules, cost and tooling. This engineer must also have a thorough knowledge of his plant. The right choice of materials and tools will maximize the production efficiency of your company. If you're interested in creating a mould that meets your exacting standards, contact a plastics engineering company today.
A Multicavity Mold that incorporates cold runner systems typically requires a larger Preform Mould. The runner, slides, and mechanisms in this process are much larger and make it difficult to align the cavity when designing a complex part. A larger mould also restricts the operation window of a molding process, and the warpage and heat produced during this process are almost impossible to control. When choosing the right Preform Mould, consider the advantages and disadvantages of each of these three.
