Planetary mixer

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Product Overview
PU automotive sealant double planetary mixer is a professional mixing equipment designed for the automotive sector's requirements for high viscosity, high filler content and consistent PU sealant production. The machine combines double planetary rotation and revolution with a power-driven wall scraper to ensure efficient dispersion, uniform mixing and stable defoaming under vacuum or sealed conditions.

Applicable Materials

• PU automotive sealants
• Polyurethane structural adhesives
• Automotive sealing and bonding materials
• High-filler PU elastomer systems

Function & Benefits

• Handles high-viscosity, high-filler systems: double planetary motion creates complex flow paths for thorough dispersion.
• Powered wall-scraper reduces dead zones and prevents material buildup on vessel walls.
• Supports vacuum mixing to remove entrapped air, improving density, surface appearance and product quality.
• Jacketed heating/cooling enables precise temperature control to manage reaction rates and viscosity changes.
• Combined planetary and rotational motion ensures high mixing uniformity and batch-to-batch stability.

Structure & Configuration
Mixing method: Double planetary mixing + power scraper
Working mode: Intermittent
Temperature control: Jacketed heating and cooling
Vacuum system: Optional / customizable
Discharge: Bottom valve discharge or press-machine discharge
Control system: PLC + touchscreen
Materials: Carbon steel or stainless steel (customizable)

Parameters
Volume range: 5–2000 L
Applicable viscosity: High to ultra-high viscosity
Operating temperature: Ambient to 200℃
Automation: Supports recipe management and access control

Why is this mixer needed?

• Achieves thorough dispersion of fillers and base materials in high-filler formulations.
• Prevents dead zones and wall buildup through powered scraping.
• Enables vacuum deaeration to meet automotive-grade appearance and density requirements.
• Provides repeatable batch quality with precise temperature and motion control.

Why choose this equipment / Supplier strengths

• Proven experience in PU and automotive sealant projects.
• Process-matched equipment design and customization.
• Support for formula recording, recipe management and access control.
• Capability to supply complete production lines and turnkey projects.

Technical characteristics / specifications

• Mixing principle: Double planetary rotation with power-driven wall scraper for effective dispersion and defoaming.
• Operation: Intermittent, adaptable to process requirements.
• Temperature control: Jacketed heating/cooling up to ~200℃.
• Vacuum capability: Optional, configurable for deaeration.
• Discharge options: Bottom valve or press discharge.
• Control: PLC with touchscreen; supports recipe management and access control.
• Materials of construction: Carbon steel or stainless steel, selectable by application.
• Capacity range: 5–2000 L.
• Designed for high to ultra-high viscosity and highly filled PU systems.