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An important step of heat flow path is the design concept of heat flow path. A detailed design concept, including manifolds and pressure plates, will be an important part of the mold review.

The manifold is used to ensure that the molten channel can be arranged in an effective manner. Under ideal conditions, the molten fluid channel is designed in a symmetrical way, and the flow length and turn quantity of all downflow passages are consistent. In the case of a multi-cavity mold or an asymmetric mold, the molten channel may include artificial length and turning points in order to properly balance the system. This concept helps both designers and heat flow designers to ensure the design of the manifold.

For a part that needs three injection ports, the problem of plastic flow balance needs to be solved in order to control the seam line on the part. Through a detailed manifold design, the flow balance and manifold layout can be evaluated to ensure that the downstream runner can meet the needs of the customer mold base. The result is a combination of a single direct injection port and two hot to cold injection ports on a single cavity die.

In addition, the use of pressure plate technology to ensure that customers can design the required closure height and key features. Since the nozzle includes a hot runner nozzle, the mold designer also needs to confirm that the injection nozzle's proximity and cooling meet the requirements of the heat runner manufacturer.

The main factors of heat flow path evaluation include: flow balance and heat distribution of manifold. Channel size; Strength of manifold materials in high pressure applications; Size of injection port; The proximity of cooling and injection port; A component that can withstand abrasion and corrosive resins.

The hot runner is a kind of complex and advantageous mould parts. In mold production projects, CAE computer-aided engineering analysis, resin testing and design concepts can all be completed by a hot runner supplier. At the beginning of a project, if the hot runner supplier is involved, the designer can further optimize the product.