SCF Microcellular Injection Auxiliary Equipment · Precision Support, Stable Foaming
Precise SCF Injection | High-Precision Mold Temp Control |
Dehumidifying Drying | Automated Removal | Integrated Design
SCF Microcellular Injection Auxiliary Equipment
The success of the microcellular foaming process relies on close coordination between the main machine, mold, and auxiliary equipment. DKM provides a complete range of SCF microcellular injection auxiliary equipment, covering key areas such as supercritical fluid generation and injection, high‑precision mold temperature control, dehumidifying drying, and automated part removal. Every auxiliary unit is designed specifically for the unique demands of the microcellular process—ensuring precise dissolution of nitrogen/carbon dioxide, uniform bubble nucleation and growth, and stable cooling and solidification of the finished part.
SCF Microcellular Auxiliary Systems
1. Supercritical Fluid Generation & Injection System
The starting point of the microcellular process is converting atmospheric nitrogen or carbon dioxide into supercritical fluid and injecting it precisely into the plastic melt. DKM’s SCF system uses closed‑loop control to maintain the blowing agent in an optimal supercritical state at all times.
Dual Gas Compatibility
Supports both nitrogen (N₂) and carbon dioxide (CO₂) for flexible material and part requirements.
Pressure Control Accuracy
±0.1 MPa, ensuring melt pressure remains stable above 20 MPa for complete gas dissolution.
Dynamic Flow Regulation
Real‑time monitoring of gas injection volume with response time <0.1 seconds, adapting to different injection phases.
Pure Gas Supply
Built‑in filtration and purification units prevent impurities from affecting cell quality.
2. High-precision mold temperature control system
The micro-foaming process has strict requirements for mold temperature: a suitable temperature is needed before injection to ensure the flow of the molten material, and a rapid cooling process is required after injection to achieve molding. The DKM mold temperature machine offers a wide temperature range and high-precision control, and supports rapid cold and hot conversion using RHCM.
Temperature range
-30℃ ~ 300℃ (cold water machine/oil temperature machine/dual temperature zone model can be selected as per requirements)
Control accuracy
±1℃, ensuring uniform mold temperature and avoiding local overheating or undercooling
RHCM rapid conversion
heating rate ≥ 5℃/second, cooling rate ≥ 4℃/second, effectively improving surface quality
Multi-zone independent control
the moving mold and the fixed mold can be set at different temperatures, meeting the requirements of complex products
3.Dehumidifying & Drying System
The microcellular process is highly sensitive to material moisture, which can vaporize at high temperatures and disrupt cell structure. DKM’s dehumidifying dryers ensure material is dried to below 50 ppm, laying the foundation for high‑quality foaming.
Dew Point Control
-40°C to -60°C, maintaining a low‑humidity environment.
Closed‑Loop Dehumidification
Prevents external moisture ingress, increasing drying efficiency by 30%.
Automatic Material Level Monitoring
Synchronized with the injection machine for on‑demand feeding, preventing secondary moisture absorption.
4.Automated Part Removal & Conveying System
Microcellular parts are often lighter and thinner, imposing higher demands on handling equipment. DKM provides high‑speed robots and conveyors for stable part removal and post‑processing.
High‑Speed Removal
Robot motion synchronized with the injection cycle for seamless operation.
Soft Grippers
Adapt to the easily deformed nature of foamed parts, avoiding damage.
Optional Vision Inspection
Online detection of surface defects for real‑time rejection of non‑conforming parts.
5.Nitrogen Generation & Recovery System (Optional)
For large‑scale production, DKM offers on‑site nitrogen generation and recovery systems, significantly reducing operating costs.
On‑Site Nitrogen Generation
PSA membrane separation technology with purity adjustable from 95% to 99.5%.
Exhaust Gas Recovery
Recovers gas expelled from the cavity for recycling, saving nitrogen consumption by 30–50%.
Fully Automatic Control
Integrated with the SCF system for demand‑based gas supply.
Synergy Between SCF Auxiliary Equipment, Main Machine, and Mold
DKM auxiliary equipment is not isolated; it is deeply integrated with DKM microcellular injection machines and SINOMOULD’s specialized molds to form a complete microcellular production system.
Synergy Point | Advantage |
SCF system integrated with injection machine control | One unified interface for setting gas parameters and real‑time monitoring—no additional learning curve. |
Temperature controller matched to mold cooling layout | Optimized flow distribution based on SINOMOULD’s conformal cooling design; temperature variation <2°C. |
Dryer synchronized with injection machine feeding | Material level sensors trigger feeding automatically, preventing moisture absorption from material exposure. |
Robot synchronized with mold opening stroke | Precise matching of robot motion with mold opening stroke reduces take‑out time and increases efficiency. |
Our engineers will recommend the most cost‑effective auxiliary equipment configuration based on your part requirements and production line needs.
