Defoaming masterbatch is used in plastics, especially recycled plastics, to absorb moisture and prevent defects like bubbles, moiré, cracks, and spots that occur during processing. By adding this masterbatch, manufacturers can eliminate the need to pre-dry raw materials, reducing energy consumption, labor, and overall production costs while improving the quality and appearance of the final product.
How it Works
- Moisture Absorption: The primary function of defoaming masterbatch is to absorb trace amounts of moisture present in plastic raw materials, particularly recycled resins.
- Preventing Defects: Water vapor in the plastic can turn into gas during high-temperature processing, creating bubbles, moiré patterns, or leading to cracks and spots on the product surface. The defoaming masterbatch prevents these issues by removing the water.
Benefits of Using Defoaming Masterbatch
- Reduced Costs: Eliminates the need for drying equipment and processes, saving on energy and labor.
- Improved Production Efficiency: Speeds up the production process by removing drying steps.
- Enhanced Product Quality: Improves the physical properties and appearance of plastic products by preventing defects.
- Versatile Use: Can be used in a wide range of processing methods, including injection molding, film blowing, sheet production, and bottle blowing.
- Compatibility: Suitable for various plastics, including recycled PE and PP, as well as moist or degradable plastics.
Key Components
- Calcium Oxide (CaO) is a common active component found in defoaming masterbatch due to its effective moisture-absorbing properties.
- Other components, such as wax and pigments, can be added for better dispersion and to achieve desired colors.