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Bag Closer Thread - 20/6; 100% POLYESTER YARN 6 PLY ; White

Bag Sewing Thread, 20/6 for NewLong NP-7A

$0.00 SGD - $6.00 SGD
$0.00 SGD
$4.00 SGD
$4.00 SGD - $6.00 SGD
$4.00 SGD
Color: Raw White

Bag Closing Thread - Bag Closer Thread 20/6

The 20/6 100% Spun Polyester Bag Closing Thread is engineered explicitly for high-speed, heavy-duty industrial packaging. Wound precisely on standard 220-gram cones, this premium thread offers continuous, knot-free stitching to secure heavy sacks up to 50 kg without tension drops. Tailored optimally for the rigorous demands of rice or flour repacking lines, it resists aggressive airborne starch dust, friction heat, and moisture to ensure completely leak-proof bag closures.

  • 100% Polyester 20/6, 1200 meters, 220g per cone.
  • Each roll stitches 350 to 450 bags, Standard Sized: 600mm opening.
  • The complete commercial palette of poly bag closing thread.
  • Strong and smooth 40 wt polyester thread.
  • Material: Spun Polyester Sewing Thread
  • White; Red; Green; Blue; Black; Orange; Neon Orange
  • Treatment: Lubricated with Food Grade Oil for Continuous Smooth Stitching.
  • Tensile Strength: Approx. 6.50 Kgf
  • Test Result: Approx. 6.86 Kgf
  • Export Packing: 35 x 16 x 24cm ; Gross weight 4.6kg.


Bag Closer Thread

1. Application, Functionality & Speciality
  • Built for Repacking Environments: Perfectly suited for sealing woven polypropylene (PP) sacks, multi-wall kraft paper bags, jute, and cotton packaging used in food repacking factories. 
  • 6-Ply High-Tenacity Construction: Built with an advanced 6-ply twist mechanism that evenly distributes seam stress, providing a massive tensile strength of approximately 6.50 Kgf to 6.86 Kgf to prevent accidental bottom blowouts during transport. 
  • Food-Grade Lubrication Treatment: The thread is pre-treated with FDA-compliant food-grade mineral oil/silicone wax. This lubricated coating allows the thread to glide smoothly through high-speed needle eyes without fraying, fluffing, or building up static energy in explosive flour dust environments. 
  • Knotless and Seamless Flow: Manufactured without knots to eliminate snagging and continuous thread snapping, resulting in an average yield of 350 to 450 closed bags per 220g cone (based on standard 600mm wide openings).

1. Application, Functionality & Speciality
  • Built for Repacking Environments: Perfectly suited for sealing woven polypropylene (PP) sacks, multi-wall kraft paper bags, jute, and cotton packaging used in food repacking factories. [1, 2]
  • 6-Ply High-Tenacity Construction: Built with an advanced 6-ply twist mechanism that evenly distributes seam stress, providing a massive tensile strength of approximately 6.50 Kgf to 6.86 Kgf to prevent accidental bottom blowouts during transport. [1, 2]
  • Food-Grade Lubrication Treatment: The thread is pre-treated with FDA-compliant food-grade mineral oil/silicone wax. This lubricated coating allows the thread to glide smoothly through high-speed needle eyes without fraying, fluffing, or building up static energy in explosive flour dust environments. [1, 2, 3]
  • Knotless and Seamless Flow: Manufactured without knots to eliminate snagging and continuous thread snapping, resulting in an average yield of 350 to 450 closed bags per 220g cone (based on standard 600mm wide openings). [1, 2, 3]
2. Five Failure Possibilities
  • Thread Fraying or Shredding at the Needle: Caused by using worn needles with burrs or using non-lubricated dry paths, leading to structural separation before the stitch is complete.
  • Premature Seam Rot from Chemical Exposure: Although highly resistant to mild acids, storing closed bags in hyper-aggressive, unprotected chemical or chemical-fertilizer zones without treating the seam can slowly compromise the polymer structure.
  • Tension-Induced Thread Snapping: If the machine's tension discs accumulate dust layers from flour or rice debris, the thread can get trapped, creating sharp friction peaks that snap the thread during rapid chain-stitching.
  • Skipped Stitches and Unraveling: If the cone winds unevenly due to improper seating on the machine's cone holder, it can snag, causing skipped chain stitches that compromise the entire bag's seal.
  • Environmental Moisture Degradation: Storing raw spools in damp, humid environments without protective shrink wrapping can cause moisture absorption, slightly dropping the breaking strength and inducing machine feeding issues. [1, 2, 3, 4]
3. Steps Taken to Perform a Thread Replacement
  1. Power Down System: Turn off the portable bag closer or stationary line motor completely to guarantee operator safety.
  2. Clear the Old Cone: Remove the depleted or damaged cone from the spool stand, clearing out any residual fibers or dust left on the machine bracket.
  3. Position the New Cone: Firmly place the fresh 220g cone onto the spool stand, ensuring it sits flat and the thread pulls upward without friction.
  4. Follow the Threading Path: Pull the thread end through the top eyelet guide, guide it securely down through the tension disc plates, and feed it into the needle bar guide holes.
  5. Thread the Needle Eye: Pass the thread cleanly through the eye of the needle from the correct direction (dependent on the machine manual), leaving a 50–70mm loose tail.
  6. Test Run: Power on the closer and run a short test stitch on a piece of scrap material to verify correct chain-stitch formation and tension behavior. [1, 2, 3]
4. Recommended Replacement Rate & Spare Inventory
  • Yield Expectation: One 220g cone yields roughly 350 to 450 bags (600mm width).
  • Replacement Frequency: In a standard mid-sized repacking setup running 2,000 bags a day, a single machine line will deplete 4 to 5 cones daily.
  • Recommended On-Hand Stock: Maintain a minimum rolling inventory safety stock of 20 to 50 cones per active sewing machine to ensure zero factory downtime during peak harvest or repacking seasons. [1]
2. Compatible Sewing Machine Models This 20/6 cone formulation is universally compatible with standard high-speed portable bag closers and heavy-duty automatic fixed closing systems, including: 
  • Newlong Industrial: NP-7, NP-7A, DS-9C, DS-11
  • Fischbein: Portable Model F, Model E, Series 100
  • Union Special: Style 2200, 39500, 80800 Series
  • Yaohan: F300, F600, N600A
  • Siruba: AA-6 Portable Closer
  • Juki: Industrial heavy-duty packaging systems
  • Golden Lion: GL-7
 3. Steps Taken to Perform a Thread Replacement
  1. Power Down System: Turn off the portable bag closer or stationary line motor completely to guarantee operator safety.
  2. Clear the Old Cone: Remove the depleted or damaged cone from the spool stand, clearing out any residual fibers or dust left on the machine bracket.
  3. Position the New Cone: Firmly place the fresh 220g cone onto the spool stand, ensuring it sits flat and the thread pulls upward without friction.
  4. Follow the Threading Path: Pull the thread end through the top eyelet guide, guide it securely down through the tension disc plates, and feed it into the needle bar guide holes.
  5. Thread the Needle Eye: Pass the thread cleanly through the eye of the needle from the correct direction (dependent on the machine manual), leaving a 50–70mm loose tail.
  6. Test Run: Power on the closer and run a short test stitch on a piece of scrap material to verify correct chain-stitch formation and tension behavior.
4. Recommended Replacement Rate & Spare Inventory
  • Yield Expectation: One 220g cone yields roughly 350 to 450 bags (600mm width).
  • Replacement Frequency: In a standard mid-sized repacking setup running 2,000 bags a day, a single machine line will deplete 4 to 5 cones daily.
  • Recommended On-Hand Stock: Maintain a minimum rolling inventory safety stock of 20 to 50 cones per active sewing machine to ensure zero factory downtime during peak harvest or repacking seasons

 

Download(s):

Download Bag Closer Thread-White Colour 20/6 Specification