Does Sigma Mixer Need To Have Vacuum System?

Vacuum kneading refers to the process of mixing materials in a low-pressure or bubble-free environment by removing air from the kneading chamber using vacuum system.

Its functions are:

• degassing
• reducing oxygen content
• improving material density

In what situations is it recommended to equip sigma mixer with vacuum system?

1. Products that are highly sensitive to air bubbles

Residual air bubbles in the product will affect:

• bond strength
• surface appearance
• finished product stability

2. High-viscosity, high-filler materials

High-viscosity materials easily trap air during kneading, and ordinary atmospheric pressure kneading struggles to naturally expel these air bubbles.

A vacuum environment helps to:

• increase mixture density
• improve filler dispersion

3. Mid-to-high-end products or products with high requirements for consistent quality

4. Contains volatile components or requires removal of reaction gases

In some processes, the vacuum system can also be used to:

• remove reaction byproduct gases
• assist in solvent removal

What are the main effects of vaccum system on sigma mixer?

1. Improved product quality
2. Improved mixing uniformity
3. Reduced post-processing steps

Vacuum systems are not standard equipment, but rather a process-specific feature.

Whether a system is necessary should be determined based on a comprehensive assessment of the material viscosity, formula, product application, and quality requirements.

For uncertain projects, the following can be used to determine whether to configure a vacuum system:

• Small-scale testing or process evaluation
• Similar industry applicaiton experience

We offer 5L laboratory sigma mixer for customer testing purposes.

You are welcome to visit our factory for a trial, or send us samples and we will help you with the experiments. Feel free to contact us: +86-181 3837 3963 (Whatsapp, Wechat) or sigmamixer@outlook.com.