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Technical Punched Brushes
Arrangement of Tufts in the Punched Brushes
In this type of brush the tufts are fixed to the support thanks to bristles fixed on the bottom of the holes previously made.
I Tufts can be arranged mainly in 3 ways bestowing to the brush these characteristics:
Staggered arrangement
Brush with especially high density and uniformity
Parallel arrangement
Brush with low density, easy discharge of slags from filaments
Helical arrangement
Brush apt to move the slags on one side
Size of the Tufts
The size "D" of the Tufts of filament can vary, there is also a relation between bristles diameter and thickness "T" of support:
D = from a minimum of 2 mm to a maximum of 12 mm
T = from a minimum 6 mm to a maximum 24 mm.
Different diameters give the brush different characteristics:
Big bristles = brushes suitable for heavy-duty works and with big dia filaments
Little bristles = brushes suitable for light-duty works, with high density and thin dia filaments
Type of Punched Brushes
There are 3 main types of punched brushes that differentiate for the way they are used in brushing (movement relative or absolute with respect to the object of brushing and contact surface with the object)
Cylindrical Punched Brushes
| Keys |
|---|
| D1 = External Diameter D2 = Diameter Core D3 = Diameter Hole D = Diameter Knots L = Total Length A/B = Distance between 1° hole and borders of the core |
| Useful brushing length = L - A - B PT / PL = Arrangement of tufts (staggered, parallel, helical) Support material (plastic, wood, aluminum and more) Possible inclination of the tufts |
Linear Punched Brushes
| Keys |
|---|
| W = Support width L = Support length T = Support thickness H = trim length filament D = Diameter tuft A/B/C/E = Distance between 1° hole and support borders |
| Useful brushing length = L - A - B Useful brushing width = W - C - E PT / PL = Arrangement of tufts (staggered, parallel, helical) Support material (plastic, wood, aluminum and more) Possible inclination of the tufts |
Punched Frontal Brushes
| Keys |
|---|
| D1 = Support diameter D2 = External Diameter tufts D3 = Diameter internal tufts D4 = Diameter support hole D = Diameter tuft T = Support thickness H = trim length filament |
| No. rows/punching circumference Support material (plastic, wood, aluminum and more) Possible inclination of the tufts |
