Hot runner system is a relatively complex technology in the field of injection molding. There are many problems to be noticed when selecting and purchasing hot runner system for mold designers and manufacturers.When designing and manufacturing hot runner mold, a mold manufacturing company doesn't simply go to hot runner supplier and buys a hot runner system to install on the mold. In fact, between the mold manufacturing company and the hot runner supplier, from the conceptual design stage of the hot runner mold to the actual production process of the mold and the use of mold, there are many meticulous and close coordination and cooperation in the technical and commercial aspects. Therefore, mold manufacturers and mold users should choose hot runner suppliers. When choosing a hot runner supplier, we should focus on two basic aspects, one is the quantity and quality of the hot runner components produced by the hot runner, and the two is the technical support and after-sales service of the hot runner supplier in the area of the mold users.

1. Hot runner component variety and quality

   The hot runner system consists of three types: HOT TIP, SPRUE GATING and VALVE GATING. In fact, it can be subdivided into many product lines in each type. For example, the diameter of the runner section of the hot tip nozzle (NOZZLE) can be varied from 4 mm to 12 mm, and the nozzle will also be made into a series of products of different sizes. There are many variants of nozzle gate inserts to meet different application requirements. So the product line of hot runner suppliers to choose is richer and better. In this way, the user can have a larger selection of hot runner components, the types of plastic parts produced by the hot runner, the size weight and the scope of application are wider, which is more conducive to the optimization of the injection production process and improve the quality of the products.

   In the injection molding of plastic products, hot runner systems and hot runner molds are operated under high temperature and high pressure dynamic load conditions. There are many factors that contribute to the failure of hot runner system components. And injection molding processing is mainly used in the production of large quantities of plastic parts. Once there was any suspension of production, the economic loss was very serious. Therefore, the quality and reliability of the hot runner system are very important. Customers should in-depth review the quality and application history of hot runner components produced by hot runner suppliers. Some of the more outstanding hot runner producers have been certified by the international organization for ISO quality standards.

2. Technical support and after-sales service

  In the use of hot runner molds, in addition to the first choice of a reliable hot runner system, the user should also consider any problems in the hot runner, whether timely and effective technical support and after-sales service is an important factor. Many hot runner suppliers have strong and powerful technical support and service networks in the countries and regions where their corporate headquarters are located, and they are equipped with full-time service personnel who can access customers at any time for troubleshooting. However, these companies are often located in some other countries and regions far from their own corporate headquarters. They only have some offices that focus on hot runner product sales. Technical support is relatively inferior. Users should pay attention to this factor.