What are the key factors in choosing a bottle mould?

During the production process, we often struggle to choose what kind of hot runner nozzle for bottle blast moulds. For this reason, through investigation, I learned that the factors affecting the choice of hot runner nozzle for bottle blast moulds are: plastic raw material, quality of the product, nozzle, mould, cycle time, gate, runner, temperature controller, performance of injection moulding machine, and design of the product. When companies have an accurate understanding and grasp of these, they will be able to choose the right hot runner nozzle for the bottle preform mould.

1, Plastic raw materials: different de plastic raw materials have different processing variables, and those processing variables will affect the choice of hot runner system.

2, The weight of the product: different weight of the product on the hot runner requirements are completely different.

3, Nozzles: nozzles can generally be differentiated by size, temperature distribution, physical characteristics, materials used (copper, steel, etc.) as well as the ease of maintenance and price.

4, Mould: What is the number of cavities? How far apart are the nozzles distributed? What kind of material is being processed? These are all elements of the mould that are related to the optional hot runner system.

5, Cycle times: Fast production cycles mean increased demands on the nozzles. For example, the nozzles have to transfer heat accurately and be durable.

6, Gates: For point gates, the hot runner tip must have the ability to melt the material and cool the seal in order to maintain a good thermal balance during each moulding cycle. Valve gates, on the other hand, use mechanical methods to seal the gate.

7, Runners: The use of hot runner systems avoids the creation of grips, thus saving raw material and at the same time eliminating the previous need to remove grips by hand, robot or other means.

8, Temperature control: each nozzle must be connected to a relatively sophisticated temperature controller.

9, The performance of the injection moulding machine: the ability to fit a given size of mould, to provide sufficient closing force, to operate according to the cycle time requirements, to plasticise sufficient material, etc.

10,Product design: Generally speaking, we all know that product design is done first, but the final moulding is done in the hot runner mould. In order to ensure a smooth product appearance at the end of moulding and easy exit from the mould, those factors must be considered in the structural design of the product.