Band knife machines are precision cutting tools used in garment industries for complex shapes and small parts, characterized by a fixed knife and a movable fabric. They offer high productivity for limited products and feature automatic grinders, air blowers, and variable speed control, but are more suitable for smaller components due to table length. Maintenance includes regular cleaning and oiling to ensure performance and longevity.

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3. • Band knife machines provide the most accurate
cutting and are therefore used in cutting small and
complex shape components.
• A band knife machine has a working surface and a
knife that forms a moving circle during the fabric
cutting process.
• The band knife is characterized by its length, width
and thickness.
• The work surface of the machine is smooth and may
be equipped with a special air blowing system to
facilitate maneuverability of cut fabrics.
• The fabric plies are guided against the cutting device
which is fixed and performs only a vertical movement
down to the fabric.
Band knife cutting machines are used in garments
industries
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4.  It comprises a series of three or more pulleys,
which provide the continuous rotating
motion of the knife .
 An endless knife is used here.
 Knife is usually narrower than on a straight
knife.
 A large size of table is used to support the
fabric & for cutting.
 Air blower blows the air to minimize the
weight of fabric.
 Balls in air blower help to move the fabric in
different direction.
 Automatic grinder is used.
 In this method machine is stationary but
fabric is movable.
 High speed RPM motor is used.
 Required a large space for it.
 This is like a saw mill cutter.
 Knife life time depends on fabric type & uses
of machine.
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5.  Band knives are used where higher standard of accuracy is required.
 As a first step, by using straight knife the lay will be sectioned that by using band knife, the
accurate cutting will be done.
 When smart parts like collars, pockets are cut, a template of metals is used in the shape of
pattern to get correct shape.
 Mostly used in men’s wear. Generally used to cut large parts of garments such as jackets and
overcoats
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6. 1. Bodywork
2. Band knife,
3. Motor,
4. Work surface,
5. Knife sharpener
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7. 1) Wavy edge – (for cutting materials such as tissue
paper and textiles)
2) For cutting soft plastics.
3) For cutting the most wide-ranging types of rubber.
4) For cutting hard plastics.
5) Scallop edge band knife (for cutting harder
synthetics-based textiles, rubber seals and gaskets,
packaging material & so on)
6) Diamond toothed edges (for cutting the most wide-
ranging types of rubber)
7) Straight edge band knife (for cutting flexible foam or
other soft and fibrous materials)
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8. Standard Equipment
 Variable speed with Inverter Motor
 Ball Nozzle Airflow Work Table
 Automatic Sharpening Device
 Knife Cooling Silicon Pad
 Knife Speed Digital Display
 Carrying Caster
 Carbide-tipped knife-guiding plate
 Motor-protection switch
 Knife-wetter
Safety Equipment
 Gloves
 Electromagnetic Catchers
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9.  In band knife cutting machine, the knife is fixed
& the fabric will be moved. The principle
applied here is opposite to straight and round
knife.
 Band knife is used for precision cutting small
parts of garment.
 This machine contains special blower which
decreases resistance between fabrics and
table, which enables the fabrics be moved
easily and be cut precisely.
 Air blower blows the air to minimize the
weight of fabric.
 It comprises a series of three or more pulleys
(powered by electric motor), which provide the
continuous rotating motion of the knife.
 An endless knife is used here. Knife is usually
narrower than on a straight knife. The blade
moves vertically through a flat working table.
 Automatic grinder is used to sharpen the knife.
 The cutting machines operate with either a
fixed knife speed or an adjustable speed which
accommodates a wider range of fabrics.
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10. Advantages
 Suitable for any types of line.
 Very large productivity for limited products,
such as collars, cuff, placket, etc.
 Automatic grinder grinds the knife instantly.
 Air blower helps to reduce the fabric weight
which increases smooth movement of fabric.
 Possible to cut 90° angle of the lay.
 Intensity of accident is low.
Disadvantages
 Not suitable for large component due to the
length of the table.
 Work load is high as machine is stationary and
fabric is movable.
 Running cost is higher.
 Required fi x space.
 Not possible to cut fabric directly.
 Not possible to cut fabric directly from lay.
 Block pieces of fabric required in bundle form
to cut by this machine.
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11. Several models of band knife cutting machine from various manufacturers are described below.
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12. Specifications:
Model EC-700N EC-900N
Table Size 1500 x 1800 mm 1500 x 2100mm
Arm Length 700 900
Knife Speed 570 - 1140 m/min 570 - 1140 m/min
Weight 265 kg 285 kg
Knife Size 45x10x3500mm 45x10x3960mm
Voltage 220 V 220 V
Motor Power 1 HP; 17 HP 1 HP; 17 HP
Machine Size 1600x800x1900 2200x800x1600
Price About $1000 - $1200
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13. Features of the Models:
 Variable speed provided by unique inverter control adapts cutting to every type of material.
Speed can easily be changed by touch panel.
 Digital read-out of knife speed, easily adjustable to suit various cutting requirements.
 Touch panel with digital display is built into work-table for maximum ease of operation.
 Very low vibration and noise levels achieved by compact, light design of machine and hi-tech
engineering.
 New tension control mechanism assures proper knife tension.
 Ball nozzle type airflow work table is standard equipment.
 Casters make machines easily movable.
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14. Features of the Machine:
 Variable Speed Control (Inverter System): Knife speed
is shown on the Digital Indicator and easily controlled
by Inverter system according to type of material.
 Air Floating Table: Air Mat is formed on the table to
move Cutting Material lightly, smoothly
 Knife Cooling Silicon Pack: Silicon Pack is easily
removed and installed.
 Easy Knife Exchange: A Black Grip Knob at the right of
the knife cover provides Easy Knife installation and
 Automatic Sharpening System
 Carrying Caster: Carrying Caster is equipped for easy
removal to meet the requirement of relocation.
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15. Specifications:
Model KBK-900S (Table size 1200 x 1800mm)
KBK-900M (Table size 1500 x 1800mm)
KBK-900L (Table size 1500 x 2100mm)
Cutting Capacity 180mm
Table Height 720mm-850mm
Arm Length 900mm
Knife Speed Steeples adjustment
Weight 218ｋｇ（９００Ｍ）
Knife Size 0.45x10x3860mm
Voltage 1P; 220V
Price $980 - $1200 15

16. Model name CZD-1200
Table size 1500*2400mm
Cutting height 180mm
Span over of knife 1200mm
Knife size 0.45*10*4450mm
Equipment of timing
Variable speed control
10-15 m/s
Motor Three phase 380V/550W
Fan Single phase 220V/180W
V-belt specifications A-1499mm
Piece $930.00 - $1,340.00
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17. Features:
 CZD series band knife cutting machines suit for various materials, including tatting, knitting, synthetic fiber, sponge,
leather, woolen blanket, etc. easy operation, free noise, if equipping with air-floating table, the cutting materials
moved easily, and enhancing working efficiency.
 The cutting speed can be adjusted, and the user can adjust the different speeds according to different fabrics to cut.
 This machine is equipped with a special air-floating air blowing device, which can reduce the weight of the cutting
piece and the resistance formed by the cutting table, make the piece easy to move, and cut the small cutting piece
more accurately.
 It is equipped with the cutter to keep the temperature at a certain temperature at any time and the roller is made of
wear-resistant rubber material, so that the cutter is easy to fix and does not deviate from the serpentine shape, and
the cutter life is prolonged.
 It is very easy to change the cutter
 With a sharpening device, you can always keep the knife sharp as new
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18. SPECIFICATIONS
Model
Voltage
(V)
Air
Blower
(W)
Working
Table
(Mm)
Cutting
Capacity
(Mm)
Knife
Working
Width
(Mm)
Knife Size
(Mm)
Packing Size
(Mm)
N.W./
G.W.
(KG)
Price
SK-550 220/380 370 1000×1200 90 550 0.45×10×3100 1330×810×1700 230/280
$1000 -
$2500
SK-700 220/380 370 1200×1500 180 700 0.45×10×3500 1630×840×1800 250/300
SK-9000 220/380 370 1500×1800 180 900 0.45×10×3860 1930×840×1800 260/310
SK-1200 220/380 370 1500×2400 250 1200 0.45×10×4560 2500×900×1850 270/320
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19. The COSMO-120 is an impressive machine that
transforms complex cutting procedures into a
simple, effective process with the minimum of
fuss. With the COSMO-120's impressive range of
features and abilities you will be able to cut any
kinf of fabric with best accuracy. With free
vibrations the machine itself ensures high quality
work.
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20. Model COSMO 120
(Table size 120 cm x 230 cm)
Cutting Capacity 120mm
Table Height 720mm-850mm
Arm Length 900mm
Knife Speed 16 m / seconds
Weight 218ｋｇ（９００Ｍ）
Knife Size 10 mm x 0.50 mm x 4900 mm
Voltage 220/380V (3 Phase + Neutral + Earth)
Humidity 30 to 80% without condensation
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21. Specifications:
Model NS810-700 NS810-900
Table Size 1200 x 1800 1200 x 2100
Arm Length 700 900
Knife Speed 11.5-20 m/sec 11.5-20 m/sec
Weight 280 Kg 310 Kg
Knife Size 45x10x3500mm 45x10x3860mm
Voltage 220 V 220 V
Motor & Blower Power 1 HP; 25 HP 1 HP; 25 HP
Machine Size 920x1720x1780 920x2120x1780
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22. Model SK-1200 CZD- 1200 EC – 900N Ashima – AS - 1200
(FOB) Price $2,500 $1,340 $1,200 Rs. 1.20 lakh
Power Consumption 380 wt 550 wt 380 wt -
Knife size 1200 mm 1200 mm 900 mm 700-900 mm
Warranty 2 year 1.5 year 1 year 1 year
Features Automatic Automatic Semi-Automatic Automatic
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As we can see various model features various functions. The more functions (previously described)
add in the machine, the cost of the machine increase. In Bangladesh, various brand’s different
models are used. From the above discussion, I recomand the automatic SK – 1200 is better to use,
though it has a high rate.

23. Daily Maintenance
 Remove the knife and clean the knife slides with the slot
cleaner included with machine.
 To prevent undue accumulation of lint do not oil the plate
rollers. If the rollers stick, remove them from the plate and
wash them in cleaning solvent.
 Clean and oil the guides and bearings.
 Check the wear of the lateral and the back roller, to see if
it’s necessary to replace them.
 Check the electrical wiring system.
 Check the motor pulley guard.
 Check the machine pullet guard.
 Check all the screw & nut & Bolt.
Weekly Maintenance
 Check and put oil if necessary all the joints.
 Oil level check and refill.
 Use an approved air hose or bellows to blow any lint
from around the motor and sharpener.
 Remove the cover and clean any lint from around the
screw mechanism in the sharpener.
 Apply one drop of oil only on the specified location at
tubes, shaft pulley, and belt pulley.
 Check the motor pulley & machine pulley guard.
 Electrical wiring should be check.
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