A dedicated non woven drawstring bag machine is an advanced industrial converting platform engineered to fabricate cinch-top pouches, footwear dust packaging, laundry bags, and sports backpacks directly from continuous polypropylene rollstock. Operating at verified manufacturing velocities of 70 to 90 pouches per minute, automated lines like the OYANG XC700/800 series integrate a continuous pneumatic rope threading non woven bag machine mechanism with dual-side ultrasonic seam fusion, eliminating post-press manual threading labor and reducing production costs by more than 75%.
Footwear dust covers, hotel laundry sacks, and luxury gift pouches represent staple non-woven converting products. However, while traditional converting machines easily seal the bag body, threading drawstrings manually has historically constrained production:
The shoe bag making machine configuration on the OYANG XC series replaces manual labor with an integrated mechatronic threading module:
Continuous spools of cotton, polyester, or PP braided cord are positioned on low-friction rotary pay-off stands. Micro-stepping magnetic particle brakes maintain constant string tension, preventing cord slack or overstretching.
As the primary non-woven web is folded along its upper edge to create the drawstring tunnel (hem), high-velocity pneumatic guide nozzles create a localized Venturi airflow effect. This airflow blows the leading edge of the cords smoothly through both front and rear hem channels without mechanical friction.
Continuous rotary ultrasonic seamers seal the lower border of the folded hem, creating a clean sleeve for the cord while preventing the acoustic horn from touching or damaging the interior drawstring.
A servo gripper draws the exact programmed cord length (holding ±1.0 mm cut tolerance). At the bag’s bottom corners, dual ultrasonic sonotrodes spot-weld or knot-fuse the cord ends securely between the fabric plies before high-speed flying blades cleanly shear the cord.
High-amplitude 20 kHz ultrasonic horns seal the lateral borders of the pouch, creating continuous, tear-resistant seams. An integrated rotary knife separates the finished cinched pouch onto the stacking table.
Evaluating the return on investment (ROI) of an automated drawstring bag making machine reveals dramatic operational cost reductions:
Conclusion: The labor savings achieved on just two large-scale brand packaging contracts cover the entire capital expenditure of the OYANG XC700 automatic drawstring conversion line.
| Engineering Parameter | Conventional Semi-Auto Setup | OYANG XC700/800 Dedicated String Line |
|---|---|---|
| Converting Velocity | 25 – 35 pouches/min (Manual feed) | 70 – 90 pouches/min (Continuous auto) |
| Rope Insertion Method | Manual thread needle / Foot-pedal push | Pneumatic Venturi airflow automated feed |
| Drawstring Style Support | Single pull cord only | Dual-pull cinch cord & single loop cord |
| Side Seam Tensile Strength | 60 – 90 N (Inconsistent heat bars) | > 140 N (Continuous 20 kHz ultrasonic fusion) |
| Fabric Grammage Range | Limited to 45 – 70 GSM | 30 – 100 GSM (PP Spunbond, RPET, Non-woven) |
| Required Line Operators | 4 – 8 Workers (Forming + Stringing) | 1 Operator for complete line management |
Operating high-speed pneumatic cord injectors and continuous ultrasonic edge-sealers at 80 cycles per minute creates recurring dynamic pressure cycles. If the structural framing flexes, the pneumatic guide tubes misalign with the hem channel, causing cord jams and machine stops.
Threading guide blocks, horn anvils, and roller brackets processed to ≤ 0.015 mm tolerances on OKUMA CNC centers at OYANG.
All rope guide rails, ultrasonic anvil mountings, and pneumatic slide blocks are machined on Japanese MAZAK and OKUMA 5-axis CNC machining centers. Precision machining within ≤ 0.015 mm ensures frictionless cord passage, clean ultrasonic edge trimming, and continuous round-the-clock reliability.
The industry benchmark for drawstring bags and footwear dust packaging. Features automatic pneumatic rope threading, dual-side ultrasonic welding, and edge-position correction.
Explore XC Series SpecsVersatile production platform combining drawstring shoe pouch conversion with flat D-cut bags, bottom-gusset carry totes, and loop-handle bag production.
Explore XB Series SpecsPrecision standalone ultrasonic unit for custom embossing, decorative drawstring channel sealing, or manual finishing of boutique luxury gift bags.
Explore Lace Machine SpecsA non woven drawstring bag machine is an automated industrial packaging line that converts non-woven fabric rolls into cinch-top bags by folding the top hem, automatically threading drawstrings using pneumatic air, and sealing the side seams with ultrasonic welding.
The OYANG XC series uses a pneumatic Venturi air-injection system that propels the cord through the folded fabric channel on a continuous cushion of air, completely eliminating the mechanical friction, snagging, and knotting common in push-finger mechanisms.
An automated shoe bag making machine such as the OYANG XC700 operates at continuous production speeds of 70 to 90 pouches per minute, producing approximately 35,000 to 45,000 completed drawstring bags per single 8-hour shift.
Yes, the XC series can be configured for either single-pull cinch cords (ideal for simple laundry and dust bags) or dual-pull opposing drawstrings (required for premium footwear pouches and athletic cinch backpacks).
The automatic threading mechanism accommodates various cord materials, including polypropylene braided cord, twisted cotton rope, polyester drawstrings, and flat ribbon tape ranging from 2 mm to 6 mm in diameter.
Eliminate manual cord insertion and scale production to 90 pouches per minute. Contact OYANG packaging engineers to review your cord samples, request machine cycle videos, and receive an engineering quotation.
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