Material
PET Polyester
PET Polyester is selected from its stiffness, recovery, wear, wet-service, chemical, and temperature behavior. Stiffness is set by the complete filament specification, including material, diameter, free trim, density, grade, and service conditions.
Material Overview
PET is a semicrystalline polyester; reinforced molding grades demonstrate stiffness and broad chemical resistance, while brush filament behavior remains grade-specific.
In a finished brush, PET Polyester does not create a fixed stiffness by itself. Working stiffness and recovery depend on filament size, free trim, density, tuft pattern, and contact. Grade and operating conditions determine how stable that behavior remains.
Material Properties
| Density | 1.34–1.39 g/cm³ |
|---|---|
| Melting point | 250–260°C |
| Water absorption | 0.1–0.5% |
| Filament diameter | 0.08–1.20 mm |
Brush Applications
For PET Polyester, directly related brush structures include Tube & Pipe Bore Brushes, Floor Scrubber Sweeper Brushes, Roller and Conveyor Brushes, and Machine Table Brush Plates. Applications related to PET Polyester include Industrial Machine Cleaning, Carpet Machine Cleaning, Floor Scrubbing, and Brick, Tile & Building Material Machine Brush Use.
Specification and Customization
Material form
Filament
Common forms
Filament.
Grade
Standard polyester brush-filament grade
Reference standard
ISO 527-1:2019; ASTM D638; ISO 62:2008; ASTM D570-22; ISO 868:2003; ASTM D2240-15(2021); ISO 4892-3:2024; ASTM G154-23; UL 94; ISO 13061-1; ASTM D143
Limitations and Alternatives
Avoid heavy metal deburring or high-temperature wire-brush jobs.
Frequently Asked Questions
What are the key properties of PET Polyester brush material?
PET is a semicrystalline polyester; reinforced molding grades demonstrate stiffness and broad chemical resistance, while brush filament behavior remains grade-specific. Direct data: Density: 1.34–1.39 g/cm³; Melting point: 250–260°C; Water absorption: 0.1–0.5%; Filament diameter: 0.08–1.20 mm; Brush operating range: -20–120°C.
Where is PET Polyester used in cleaning brushes?
Outdoor washing, carpet agitation, brush plates and general cleaning where weathering and low water uptake are useful.
How does filament geometry change PET Polyester brush stiffness?
PET Polyester changes brush stiffness through filament diameter, free trim, density, crimp, and contact. Use finer filament and longer trim for conformable contact; use coarser filament, shorter trim, or higher density for stronger displacement or cutting.
When should PET Polyester be replaced by another material?
Compare PET Polyester with PBT, PP, Nylon. Change material when wet stiffness, temperature, chemical resistance, conductivity, particle shedding, or surface marking becomes the limiting factor.
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