In the fields of chemicals, sealants, adhesives, energy, and electronics, the ability to efficiently process high-viscosity, high-solid-content materials is critical for product quality and production efficiency. Wuxi Maxwell Automation Technology Co., Ltd., with over 18 years of industry experience, offers the 50L Vacuum Double Planetary Mixer for Sealant – a heavy-duty industrial device integrating mixing, dispersion, vacuum degassing, and optional extrusion discharge, specifically designed for sealant and adhesive production, as well as R&D and small-batch manufacturing in related industries.

The "double planetary" mixer derives its name from its unique motion pattern. During operation, the low-speed mixing blades and high-speed dispersion disc rotate around the mixing vessel's central axis (revolution) while simultaneously rotating on their own axes (rotation).
This compound motion generates strong shearing and kneading forces, causing materials to circulate comprehensively and achieve uniform mixing at both macro and micro levels in a short time. For sealant and adhesive applications, this is critical to ensure the thorough dispersion of fillers, pigments, and additives.
Simultaneously, the integrated vacuum system (achieving a vacuum level down to -0.09 MPa) effectively removes air bubbles entrapped during mixing. This is particularly important for sealants, adhesives, and electronic potting compounds where bubbles can compromise product integrity, electrical insulation, or bond strength.
The heavy-duty industrial design makes the 50L model suitable for both pilot production and full-scale manufacturing, with optional extruder systems for efficient discharge of high-viscosity materials.

| Parameter | Specification / Details |
|---|---|
| Model | 50L (SXJ-50 series) |
| Working Volume | 50L |
| Design Volume | 68L |
| Tank Inner Size | φ500×350mm |
| Vacuum Level | -0.09 MPa |
| Revolution Speed | 0 - 39 rpm (Adjustable) |
| Self-rotary Speed | 0 - 85 rpm (Adjustable) |
| Scraper Speed | 0 - 39 rpm (Adjustable) |
| Dispersion Speed | 0 - 2100 rpm (Adjustable) |
| Rotary Power | 4KW |
| Disperser Power | 4KW |
| Material of Construction | SUS304 / SUS316L Stainless Steel (Customizable) |
| Dimension | 2200×1300×2500mm (approx.) |
| Lifting Method | Hydraulic Lifting |
| Extruder (Optional) | Integrated screw extruder for efficient discharge of high-viscosity sealants and adhesives |

The 50L vacuum double planetary mixer is designed to handle high-viscosity materials across numerous industries:
Energy Sector: Preparation of various battery pastes including lithium battery, nickel-chromium, nickel-metal hydride, and fuel cells.
Electronics & Appliances: Solder paste, ceramic slurry, magnetic materials, electronic adhesives, PVC plastics, electronic potting glue, hot melt adhesives.
Chemical Industry: Various sealants, adhesives (silicone sealant, polysulfide sealant, structural insulating glass sealant, waterproof sealant, anaerobic adhesive, stone glue, mold rubber), synthetic resins, rubber, printing inks, putty, abrasives, wax products, ceramic pigments.
Pharmaceuticals: Various ointments, polymer gels (medical patches, cooling sticks), ophthalmic and dental preparations.
Cosmetics & Food: Creams, lipsticks, lotions, gels, facial masks, mascara, foundations, nail polish, toothpaste, soaps, jams, seasonings, and chocolate syrup.

Heavy-Duty Industrial Design: Robust construction with heavy-duty motor and gearbox, specifically engineered to handle high-viscosity sealants and adhesives.
No Dead Corners: A wall scraper attached to the planetary frame continuously scrapes material from the vessel wall, ensuring no unmixed zones.
Versatile Agitator Options: Mixing heads can be tailored with options like twist-type, blade-type, frame-type impellers, as well as high-speed dispersion discs and homogenizers, to suit different sealant and adhesive formulations.
Convenient Operation & Cleaning: The cover is hydraulically lifted, and the mixing vessel is movable, facilitating easy feeding, sampling, and cleaning.
Temperature Control & Safety: The vessel can be jacketed for heating or cooling; an optional explosion-proof design ensures safety when handling solvents or flammable materials.
Optional Extruder System: An integrated screw extruder can be added for efficient, clean discharge of high-viscosity materials directly from the mixing vessel, minimizing material waste and manual handling.
Vacuum Degassing: The integrated vacuum system removes air bubbles and volatiles, ensuring product density and stability.


