Additive Masterbatch

An additive masterbatch is used to modify the physical and chemical properties of plastics to enhance their performance and durability under various environmental and processing conditions.

Types of Additive Masterbatch

Below are the most commonly used additive masterbatches and their primary functions:

• Optical Brightener: Improves whiteness and brightness by absorbing UV light and re-emitting it as blue light, which masks yellowing.
• Anti-Oxidant (AO): Prevents the plastic from degrading due to heat and oxygen during processing and use.
• UV Stabilizer: Protects the plastic from degradation and color fading caused by prolonged sunlight exposure.
• Antistatic: Prevents the buildup of static electricity on the plastic surface.
• Slip / Antiblock: Reduces friction (slip) and prevents plastic films from sticking together (antiblock).
• Flame Retardant (FR): Reduces the flammability of the plastic and slows the spread of fire.
• Oxygen Barrier: Reduces the permeability of oxygen through plastic packaging, extending product shelf life.

Moisture Masterbatch

A moisture masterbatch, also called a desiccant or anti-moisture masterbatch, is an additive that absorbs moisture from plastic materials during processing, preventing defects like holes, cracks, and foam.

How It Works

• Moisture absorption: The desiccant masterbatch contains active desiccating agents that bond with and remove water molecules from the plastic melt during processing.
• Defect prevention: This process prevents the moisture from turning into steam and creating issues like blisters, silver streaks, fisheyes, and poor surface finish in the final product.
• Improved product quality: By eliminating moisture, it helps maintain the integrity of the plastic, improves its strength and surface gloss, and allows for the increased use of recycled or degraded materials.