What is PVC Lubricant

The role of PVC lubricants is to improve the fluidity of resins and the release properties of products in plastic processing, and prevent defects due to adhesion in the machine or mold.

Lubricants are used in plastic processing and the mold release properties of products to prevent defects due to adhesion in the machine or mold. Generally added to the molding compound or coated on the surface of the cavity. Commonly used lubricants are fatty acids and their salts, long-chain aliphatic hydrocarbons. According to the different mechanisms of lubricant action, it can be divided into external lubricants and internal lubricants.

(1) External lubricant: This lubricant has poor compatibility with molding resin, so it is often used in molding machinery or molds. It forms a lubricating layer with the resin, which is convenient for resin flow and product release. , such as paraffin.

(2) Internal lubricant: This type of lubricant has good compatibility with resin, and is often mixed into resin to reduce the melt viscosity of resin and improve its fluidity. Such as butyl stearate, lead stearate, etc. Stearates are both good lubricants and effective stabilizers.