Sliders

They are low molecular substances used to reduce the pressures and forces generated during PVC processing. They enhance and improve the processing properties of the polymer. Unbalanced slider systems lead to solids build-up in equipment and the need for cleaning. Sliders eliminate polymer processing problems.

Internal and External Sliders

• Internal Sliders: These are substances that are more compatible with PVC and dissolve in it. They increase fluidity by reducing friction between polymer molecules. May reduce the glass transition temperature (Tg) and some other properties of PVC. It facilitates writing and painting on the plastic surface.
• External Sliders: Substances that are incompatible with PVC and insoluble in it. They prevent adhesion by forming an interface between PVC and processing equipment. The external lubricant content determines the behaviour of PVC in the equipment. It prevents heat rise in the plasticising process.
• Sliders: Chemicals that facilitate PVC processing and provide equipment protection.
• Internal Lubricants: Mixes with PVC to improve fluidity and processability.
• External Lubricants: Do not mix with PVC, prevent sticking by forming a slippery layer on the equipment surface.

Sliders play an important role in PVC processing. Choosing the right slider improves yield and quality, reduces costs and extends equipment life.