Heavy-Duty 20S/6 4kg Spun Polyester Bag Closing Thread

150,000m²

Plant Area

3000 tons

Monthly Production

1,000+

Workers

Product Details

MH 20S/6 4kg spun polyester bag closing thread is a six-ply industrial sewing thread built on 4kg cones for stationary, continuously running bag closing heads.

The 4kg cone suits fixed industrial sewing heads and automatic bag closing systems that run without interruption through a shift, where an operator has no convenient moment to stop and re-thread. MH supplies the thread raw white as standard and dyes to customer Pantone references or physical samples, with the whole order run from a single dye batch so the seam color holds consistent from the first bag to the last across a long production programme.

The 20S/6 4kg polyester bag closing thread is a heavy-duty industrial sewing thread ideal for sealing thick and heavy packaging bags. Made from high-tenacity 100% spun polyester, it offers strong knot strength and consistent stitch quality. The 6-ply construction ensures higher durability and performance under high-speed sewing, making it suitable for heavy-duty automatic and industrial bag closing machines.

Key Selling Points

• Six-ply tear resistance: The 20S/6 six-ply construction spreads seam load across more yarn ends than lighter-ply bag closing threads, so stitched bag mouths hold when heavy sacks are lifted, stacked or dropped.
• Built for uninterrupted lines: MH bag closing thread on large cones is aimed at stationary industrial sewing heads and automatic closing systems, cutting how often an operator has to break the line to re-thread.
• Single-batch color across long orders: Custom colors are dyed to Pantone reference or customer sample in one lot per order, keeping the seam shade uniform from the first carton to the last on extended supply programmes.
• Clean machine running: High-tenacity spun polyester with low shrinkage, oil-free finish and low lint keeps the thread path and needle area clean, reducing stoppages caused by fibre build-up.
• Resistant to working conditions: Strong abrasion and chemical resistance lets the thread hold up against grain dust, fertiliser, cement and other aggressive bagged contents.
• Audited production: MH produces its bag closing thread under OEKO-TEX aligned factory standards, giving importers a documented basis for buyer and retailer compliance requests.

Thread Weight & Recommended Machine Models

Customization

• Thread color: Pantone-based or customer samples
• Private label & logo: Available on cone or outer box
• Cone type: Plastic or paper
• Packing: 1kg/cone, 10 cones/carton or as requested
• OEM & ODM: Welcome for bulk orders

Usage

This thread is specially developed for sealing large and heavy packaging bags used in agriculture, industry, and bulk transportation.

• Woven PP bags, kraft paper sacks, and multi-wall paper bags
• Used for packing: grain, cement, fertilizer, sand, feed, seed, charcoal, and chemicals

Suitable for use with heavy-duty industrial bag closing machines, including fixed-type and high-speed sewing heads.

Other Thread Products

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We offer additional polyester thread options: corespun polyester sewing thread, high tenacity polyester sewing thread, cotton sewing thread, bag closing thread, recycled sewing thread, anti-UV sewing thread, waterproof sewing thread, fire-retardant sewing thread, High extension flex sewing thread, water soluble sewing thread, sewing thread sets.

Sewing Thread

Embroidery Thread

Yarn and Fiber

Technical Thread

Metallic Yarn/Thread

Invisible Thread

Fishing Twine

Knitting Yarn