The LoopSEW range of automatic sewing machines leads the market in high-efficiency, repetitive sewing of belts and bag bodies. These fully automatic machines not only enhance productivity but also ensure consistent product quality and standardization.
The LoopSEW range is available in three models, each designed for specific sewing needs:
Loop Sewing: LoopSEW-GN, LoopSEW-TN, LoopSEW-SN
Loop Lift Sewing: LoopSEW21
Loop Ring Sewing: LoopSEW62

• Model LoopSEW-GN50 The Newest generation automatic sewing machine
for FIBCs loop attaching sewing
LoopSEW-GN50 Loop Sewing Length 500 mm max
KEESTAR offers the LoopSEW series automatic loop sewing machines, featuring multiple sewing areas and advanced functions for attaching loops on jumbo bags of various sizes, designed to reduce labor costs.
• Speed: 200-2600 RPM
• Stitch length:0.1-12.7 mm
• Needle type:DYx3
• Thick Thread: 650-1350Dx3 ply
• Full size linear density match
• Multi-size compatibility
• Fully optimised for speed and stability
• Sewing patterns programmable for different sizes and stitches
performance; auto thread trimming; auto bobbin winder
• New mechanical structure
• Timing belt drive with low vibration and noise
• Improved controlling system

• Model LoopSEW-TN50 New generation automatic sewing machine
for FIBCs loop attaching sewing
LoopSEW-TN50 Loop Sewing Length 500 mm max
LoopSEW-TN40 Loop Sewing Length 400 mm max

KEESTAR offers the LoopSEW series automatic loop sewing machines, featuring multiple sewing areas and advanced functions for attaching loops on jumbo bags of various sizes, designed to reduce labor costs.
• Speed: 200-1,600 rpm
• Stitch length: 0.1-12.7 mm
• Needle type: DDx1
• Thick thread: 1,300Dx3 ply
• 6 times capacity bobbin & rotating hook
• Built-in bag open device
• Unique Presser Frame Design
◥ Automatic Upper and Lower Thread Trimming
◥ Skilled Sewing Workers not Required
◥ Unified Standardized Stitch Performance
◥ For Sewing Large Size Jumbo Bag with very Thick Thread,
Recommend Model LoopSEW-TN50
◥ For Sewing Common Size Jumbo Bag with very Thick Thread,
Recommend Model LoopSEW-TN40
◥ For Sewing Common Size Jumbo Bag with Standard Thread,
Recommend Model LoopSEW-SN50/LoopSEW-SN40

• Model LoopSEW-SN50 New generation automatic sewing
machine for FIBCs loop attaching sewing
LoopSEW-SN50 Loop Sewing Length 500 mm max
LoopSEW-SN40 Loop Sewing Length 400 mm max
• Needle type: DPx17
• Speed: 200-2,000 RPM
• Standard thread: 850Dx3 ply
• 3 times capacity bobbin & rotating hook
• Pneumatic loop hold clamp
• Stitch length: 0.1-12.7 mm
Auto thread trimming, auto bobbin winder.
● Standard thread 850Dx3 ply

● Model LoopSEW21

● Model LoopSEW62
● Standard thread 850Dx3 ply
● Auto thread trimming, Auto bobbin winder
Models | LoopSEW-TN50 | LoopSEW-TN40 | LoopSEW-SN50 |
|---|---|---|---|
Speed | up to 1,600 RPM | up to 1,600 RPM | up to 2,000 RPM |
Max. Sewing Loop Length | 500 mm | 400 mm | 500 mm |
Rotating Hook Size | 6 Times | 6 Times | 3 Times |
Max. Thread Thickness | 1,300D×3 Polypropylene Thread | 1,300D×3 Polypropylene Thread | 850D×3 Polypropylene Thread |
Sewing End | 2 ends/clamp up | 1 end/clamp up | 1 end/clamp up |
Thread Trimming | Automatic Upper and Lower Cold Trimming | Automatic Upper and Lower Cold Trimming | Automatic Upper and Lower Cold Trimming |
Automatic Sewing
Significantly Improved Sewing Efficiency
Constant Rate of Daily Production
Adjustable Air Outlet Height