20L Round-Bottom Double Planetary Mixer for Small-Batch Mixing

The 20L round-bottom double planetary mixer is tailored for small-batch mixing needs, ideal for lab R&D and small-scale production. Its round-bottom chamber minimizes material residue, while dual planetary agitators ensure dead-angle-free blending. high-viscosity materials like pastes and adhesives, it features variable speed control and 304 stainless steel construction. Optional vacuum function prevents oxidation and bubbles. Compact, easy to operate and clean, it delivers precise, consistent results across cosmetics, pharmaceuticals, and chemical sectors.

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Description
Feature&Application
Factory Strength

20L Round-Bottom Double Planetary Mixer emerges as a versatile and precise solution for small-batch mixing, perfectly suited for laboratory research, pilot-scale trials, and small-volume production. With its 20L capacity and specialized design, it bridges the gap between lab-scale experimentation and commercial production, offering reliability and efficiency for diverse high-viscosity material blending tasks.
At the core of its performance is the combination of round-bottom chamber design and double planetary mixing technology. The smooth, curved round bottom eliminates corners and crevices where materials might accumulate, ensuring maximum material utilization and thorough mixing—critical for costly or high-precision ingredients. The dual planetary agitators operate through synchronized revolution (around the chamber center) and rotation (on their own axes), creating a three-dimensional mixing effect that covers every inch of the 20L cavity. This motion, paired with customizable agitator types (e.g., sigma blades, dispersing discs), enables efficient blending of materials with viscosity up to 1,000,000 cps, from thin slurries to thick pastes, without leaving unmixed dead zones.
Constructed with food-grade 304 stainless steel (316L optional), the mixer meets strict hygiene and corrosion resistance standards, making it suitable for cosmetics (e.g., creams, lotions), pharmaceuticals (e.g., ointments, gels), and specialty chemicals (e.g., adhesives, resins). The chamber’s mirror-polished inner surface not only enhances material release but also simplifies cleaning—essential for frequent batch changes in R&D settings. Operational flexibility is ensured by a frequency conversion speed control system, allowing stepless adjustment of agitator speeds (0-60 rpm for revolution, 0-3000 rpm for dispersion) to match specific material properties and mixing requirements.
User-centric features elevate its practicality: a compact footprint saves lab or workshop space; an intuitive control panel with digital displays simplifies parameter setting and process monitoring; and detachable agitators and a tiltable chamber (manual or hydraulic) facilitate easy material discharge and maintenance. For applications demanding bubble-free or oxidation-sensitive products, an optional vacuum system (capable of reaching -0.098 MPa) is available to remove air and moisture during mixing. Safety is also prioritized, with built-in overload protection, emergency stop buttons, and interlocked access doors.
Whether used for developing new cosmetic formulations, testing pharmaceutical compounds, or producing small batches of specialty adhesives, the 20L round-bottom double planetary mixer delivers consistent, high-quality results. Its blend of precision, versatility, and user-friendliness makes it an indispensable tool for industries where small-batch mixing requires both reliability and adaptability.
Features

Dual-planetary Agitation Motion: The mixing paddles perform both revolution (around the central axis of the mixing vessel) and rotation (around their own axes) simultaneously, mimicking the orbital motion of planets. This unique motion ensures comprehensive coverage of the entire vessel, eliminating mixing dead zones even in the corners and bottom.
Excellent Mixing for High-Viscosity Materials: It is specially designed to handle high-viscosity substances (typically up to several hundred thousand to over a million centipoise), such as adhesives, sealants, gels, and high-concentration pastes. The strong shear and kneading forces generated by the dual motion enable thorough blending of thick materials.
Versatile Paddle Options: Various types of mixing paddles (e.g., anchor paddles, dispersing discs, sigma blades) can be configured based on material properties and mixing requirements. This versatility allows it to adapt to different processes like mixing, dispersing, kneading, and degassing.
Optional Vacuum/Pressure Function: Many models are equipped with a vacuum system to remove air bubbles from the mixture, improving product density and quality. Some can also operate under positive pressure to handle volatile or special materials.
Easy Cleaning and Maintenance: The mixing vessel can often be tilted or lifted for convenient discharging of materials. Additionally, the design of detachable paddles and a smooth inner wall of the vessel facilitates thorough cleaning, meeting the hygiene standards of industries such as food, pharmaceuticals, and cosmetics.
Stable and Reliable Operation: The equipment adopts a rigid transmission structure and high-quality components, ensuring stable operation even under heavy-load mixing conditions. It also features multiple safety protections (e.g., overload protection, emergency stop) to guarantee operational safety.
Customizable Configurations: The capacity (from lab-scale small volumes to industrial large volumes), material of construction (stainless steel 304, 316L, etc.), and auxiliary systems (heating/cooling jackets, material feeding devices) can be customized according to specific production needs.

Application Areas

Double planetary mixers are widely used in many fields, as follows:
Daily chemical products: Used in the production of emulsions, creams, shampoos, shower gels, and other products that require fine texture and stable performance.
Biomedicine: Applied in the production of medical emulsions, ointments, oral liquids, and other preparations, meeting strict aseptic and fineness standards.
Food industry: Suitable for the production of emulsified foods such as yogurt, ice cream, cheese, and other products that require uniform mixing and stable quality.
Paint and ink: Used in the production of emulsified paints and inks, ensuring fine dispersion of components and stable product performance.
Nanomaterials: Applied in the preparation of nanomaterials, realizing efficient mixing and dispersion of nanoscale materials.
Petrochemical industry: Used in the production of emulsified petroleum products, improving product stability and usability.
Printing and dyeing auxiliaries: Suitable for the production of emulsified paper treatment agents and other printing and dyeing auxiliary products.
Pesticides and fertilizers: Used in the production of emulsified pesticides and fertilizers, enhancing the uniformity and effectiveness of products.
Plastic and rubber: Applied in the production of emulsified plastic and rubber materials, ensuring uniform distribution of additives.
Electric power and electronics industry: Used in the production of emulsified insulation materials and electronic components, meeting the industry's high-performance requirements.
Other fine chemical engineering fields: Such as the production of ceramic materials, glass processing auxiliaries, metal processing fluids, etc., providing reliable mixing solutions.

In short, double planetary mixers have a wide range of applications, mainly used to produce emulsified products and high-consistency materials. They play a key role in improving product stability, fineness, and overall performance in various industries.
Gangben Mixer Manufacturer specializes in the research, development, production, and sales of mixing machines and filling machines. Its main products include vacuum emulsifying mixers, high-shear emulsifying mixers, vacuum homogenizing emulsifiers, filling and sealing machines, and liquid filling production lines. Equipped with modern production workshops and environments, we adopt advanced equipment manufacturing technologies and strict process quality management and control measures to ensure that all products are free from defects before leaving the factory.

Gangben Mixer Factory has obtained multiple patents for the research and development of emulsifying machines and planetary mixers, as well as ISO quality management system certification and international CE certification. Our products meet quality standards with a reliable quality guarantee. We are committed to manufacturing high-quality mixing machinery to enhance your production efficiency and reduce costs for your company.