Application note
Three-proof polyester usually refers to a combination of water repellent, oil repellent, and anti-static or easy-cleaning treatment depending on specification.
Best for
- Mixed moisture and oil exposure
- General industrial dust
- Projects needing a combined finish package
Temperature reference
Typical reference follows polyester limits and depends on the requested finish package, gas chemistry, moisture, and working conditions.
Technical reference
Common weight is often around 500-600 GSM as a typical reference. Before quotation, confirm whether the three-proof requirement means water repellent, oil repellent, anti-static treatment, easy-cleaning treatment, or another agreed finish package.
Main strengths
- Combines several practical finish needs
- Useful for mixed dust behavior
- Keeps polyester as an economical base where suitable
Common applications
- Mineral dust with moisture
- General industrial baghouses
- Replacement projects with finish problems
- Selected powder handling
Available finishes / options
- Water repellent
- Oil repellent
- Anti-static treatment or easy-cleaning treatment depending on specification
- Singeing and calendering where applicable
Notes before quotation
Confirm the required finish meaning, bag diameter, bag length, dust type, operating temperature, moisture, oil content, static risk, cleaning method, and photos or drawings if available.