Precision Molding: Variables Influencing The Precision Molding Process And Its Benefits

A highly technical process, precision injection molding involves using precision molds to produce complex plastic components. It is a type of plastic molding that is the most expensive and sophisticated process for mold design. This process is not used in the development of the entire product. Still, it is used on small and infrequent occasions during the manufacturing process when the product’s manufacturing calls for a precise form of plastic injection molding. This article sheds light on the variable that can influence the precision molding process and the benefits of the process. 

What variables influence the precision molding process?

Now that the precision injection molding process depends on several variables, it is essential to choose a reliable partner and supplier. Here listed are the most common variables that influence the precision molding process:

The quality of molds

Molds for precision molding need to be studied, designed, and tested accurately. It is essential to pay attention to a plurality of elements while manufacturing the product using this process, such as:

  • design engineering
  • the size, position, and the number of mold cavities
  • dimensional tolerance
  • choice of materials
  • runner size
  • bottom plate thickness
  • the precision of the parting surface, etc.

Consistency of the plastic material

Physico-chemical characteristics vary depending on its type. As a result, make sure to know the consistency of the plastic material when designing the molds, as this affects both the quality and precision of the injection molding process. 

Thermodynamic control of the mold

The consistent control of the mold temperature is crucial- the water lines of the molds balance out the loss of heat from the plastic material to achieve a specific plastic shrink. By using individual temperature controllers, the manufacturer can achieve and maintain the desired temperature. In addition, it helps in fighting humidity which can create condensation and a chilling effect on the surface of the mold when it opens or closes. 

Accuracy of the molding machine

Precision molding machines are paramount for achieving good final results. For instance, high temperatures can affect the oil viscosity in the machines, which further causes dimensional inconsistencies. 

What are the benefits of precision molding?

The below-given are the benefits of the precision injection molding process:

  • Efficient production: This process allows manufacturers to make more parts from a single mold and is faster than other molding methods. 
  • Cost-effective: Automatic CNC machines are used to carry out this process reducing labor costs and improving production efficiency. 
  • Complex designs: Using a precision molding process, manufacturers can produce complex geometries with a high level of detail and at high volumes. 


Due to the high degree of precision provided by a precision molding process, many plastic manufacturing units are looking forward to using this process for more technical applications. The precision of a product is majorly dependent on the precision injection mold and its suitability for meeting the design engineering requirements. Selecting a precision molding manufacturer with a thorough understanding of the entire process and specialized in high-precision tools can make it seamless to carry out this highly technical process.