Design of the Molded Part The following factors can significantly influence the design of the molded part: Flow properties of the melt, Solidification behaviour, Pressure transfer in the cooling-down melt, Molecular and fiber orientation, Shrinkage and its dependence on process…
PET preform mould for plastics materials (PET) have been made in some manner for centuries. Some of these PET preform moulds were fine works of art, as, for example, the moulds used by craftsmen in glass. The coming of the modern plastics…
Injection Molding In contrast with compression molding, this method is the most widely used for the forming of thermoplastic materials. With some modifications for a quicker adjustment of the temperature, some thermosetting materials, especially formulated alkyds, may also be injection…
The selection of the coloring technique is dependent on two factors and each must be considered before a decision is made. These factors are: Quality of color distribution Quantity of color required Quality Approximately 75 per cent of color distribution…
Alignment of Components Examination of Fig. 1 suggests some of the alignment problems encountered in assuring that the core rods are concentric to their respective cavities. It is usual practice to utilize individual cavity blocks and locate these via key…
