Vacuum Cleaning Furnace: An Efficient and Eco-Friendly Solution for Polymer Cleaning

In industries such as chemical fibers, plastics, and non-woven fabrics, cleaning polymer residues (e.g., melt-blown molds, spinnerets, filter cores) has always been a critical challenge. Traditional methods like triethylene glycol (TEG) cleaning or salt bath cleaning are not only inefficient but may also generate hazardous waste. The 真空洗浄炉, with its high efficiency, environmental friendliness, and automation, is becoming the preferred solution in the industry.

1. How Does a Vacuum Cleaning Furnace Work?

The core principle of a vacuum cleaning furnace is pyrolysis + vacuum oxidation, utilizing the thermal decomposition characteristics of polymers in an oxygen-free or low-oxygen environment to completely remove residues. The process includes:

1. Vacuum Pumping: The chamber is evacuated to a vacuum state (-0.08 MPa) to minimize oxygen and prevent polymer combustion.
2. Low-Temperature Melting (~300°C): Residual polymers melt into liquid and flow into the waste collection system.
3. High-Temperature Oxidation (400-500°C): A small amount of air is introduced to fully oxidize residues into CO₂ and water vapor, which are then expelled by the vacuum pump.
4. Cooling & Unloading: After cleaning, the workpiece is cooled and removed, leaving a pristine surface.

The entire process is fully automated—simply set the program, and the equipment completes the cleaning without manual intervention.

2. Four Key Advantages of Vacuum Cleaning Furnaces

✅ 1. More Thorough Cleaning

• Traditional methods (e.g., TEG cleaning) may leave chemical residues, while vacuum cleaning ensures complete removal of residues from spinneret holes and mold gaps through pyrolysis + oxidation.
• Cleaned workpieces exhibit no carbonization or corrosion, extending the lifespan of spinnerets and filter cores.

✅ 2. Eco-Friendly, Zero Pollution

• No hazardous waste liquid: Unlike salt bath furnaces, vacuum cleaning only emits CO₂ and water vapor, complying with environmental regulations.
• No irritating odors: Compared to TEG cleaning, the vacuum process is odor-free, improving workshop conditions.

✅ 3. Energy-Efficient & Cost-Effective

• Short cleaning cycle (~8 hours), 30% faster than traditional methods.
• Low energy consumption: Direct electric heating reduces electricity usage by 40% and water consumption by 60% compared to external heaters.

✅ 4. High Automation, Minimal Manual Operation

• PLC intelligent control allows customizable cleaning programs for various polymers (PA, PP, PET, etc.).
• Automatic alarms for overheating, water shortage, and phase loss ensure safe operation.

3. Vacuum Cleaning Furnace vs. Traditional Methods

4. Applicable Industries & Cleaning Targets

Vacuum cleaning furnaces are widely used in:

• Chemical fiber industry: Spinnerets, component housings, filter core cleaning.
• Plastic extrusion: Die heads, filter screen cleaning.
• Non-woven fabric production: Melt-blown mold cleaning.

Common cleaning materials:

• PA (nylon), PP (polypropylene), PET (polyester), ABS, PC, and other thermoplastics.

5. Why Choose a Vacuum Cleaning Furnace?

As environmental regulations tighten and manufacturing becomes smarter, vacuum cleaning furnaces—with their efficiency, energy savings, and zero pollution—are gradually replacing traditional methods. They not only improve cleaning quality but also reduce operational costs, making them the future of polymer cleaning.

📞 Interested in a vacuum cleaning furnace tailored to your production needs? Contact us for a customized solution!

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