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Cautions In Using Release Agent

Posted by: Mu Ju 2021-12-14 Comments Off on Cautions In Using Release Agent

In the plastic mold manufacturing industry, in order to facilitate demolding, improve efficiency, prolong the life of plastic molds, make the surface of products smooth, qualified size and reduce waste products, demoulding agents are usually needed. The release agent can be roughly divided into internal release agent and external release agent.

  1. The internal release agent is a kind of material added into the molding material. During the vulcanization process, it migrates to the surface of the product, thus playing a role of isolation from the mold.


  1. External release agent is sprayed on the surface of the die to prevent the bonding between the product and the mold.


What should be paid attention to when using release agent in plastic mold factory?


  1. The dosage concentration of plastic mold demolding should not be too high and the coating should not be too thick.


  1. According to the types of molding polymers, the appropriate release agent for plastic molds is selected, and the effect is better.


  1. The water used to prepare the release agent for plastic mold should be pure water (ion exchange water or distilled water), and tap water should not be used.


  1. When using the release agent for plastic mold, different application processes should be adopted to distinguish the external coating type, the internal adding type, the one-time, multiple and semi-permanent release agent.


  1. Before spraying demolding agent, the plastic mould should be cleaned, and no impurities such as rust, oil, carbon particles and organic matter should exist. Otherwise, the demolding effect will be reduced.



PTJMould Industrial Company Limited, established in 2010, is a leading plastic injection molding manufacturer in China. PTJMould specializes in plastic mould production for household appliances, medical equipments, electronic equipments, safety equipments as well as monitoring system.

The company has over 15000 square metres factory. With plastic injection tooling divisions possessing different machinery and expertise, PTJMould offers tools from small and precise mobile phone parts to as big as automotive parts. Our tools are mainly exported to U.S.A., Europe, Japan and UK. PTJMould’s diversification strategy and full service has won compliment from customers all over the world.

Our mission is to provide our customers high quality moulding products and services. We aim to exceed our customers’ expectations of pricing, quality and on-time delivery. To achieve our mission, PTJMould:

  • Commits to continually improve employee skills and efficiency,
  • Provides our employees a clean and safe working environment,
  • Upgrades machine technology and support equipment through a strict maintenance program, and
  • Maintains customers’ tooling to its highest peak of performance

For more about custom manufacturer of plastic molding products,please visit https://www.plastics-moulding.com/


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