Spun Polyester 3/12 & 4/12

Spun Polyester 3/12 & 4/12 Thread

The 3/12 and 4/12 Spun Polyester Thread is a heavy-duty, high-performance industrial sewing and bag-closing thread. Manufactured from 100% virgin polyester staple fiber, this thread is in high demand across the market for high-speed automated and portable stitching of bags containing cement, fertilizers, grains, and chemical sacks.

Material

100% Spun Polyester

Denier / Count

3/12 (3-Ply) & 4/12 (4-Ply)

Available Colors

White

Available Sizes

3000m cone5kg Cone

Discription

Key Features

01 Superior Seam Strength

Provides a tight, secure grip to prevent bag seams from bursting during rough handling or long-distance transport.

02 Rot & Mildew Resistant

Unlike cotton threads, it is immune to mold, mildew, and moisture damage, ensuring goods remain securely packed in warehouses over long periods.

03 All-Weather Resilience

Maintains structural integrity and strength regardless of humidity, rain, or heat exposure.

04 Smooth Machine Run

Designed for flawless friction-free movement, allowing machines to operate at high RPMs without jamming or causing production downtime.

Technical Data

Product Name

Spun Polyester 3/12 & 4/12 Thread

Material

100% Spun Polyester

Denier / Count

3/12 (3-Ply) & 4/12 (4-Ply)

Specific Gravity

Approx. 1.38 g/cm³

Colors

White (Custom Colors Available on Request)

Packaging Type

Paper Cone / Plastic Bobbin (Customized Weights Available)

Yarn Type

Spun Polyester Sewing Thread (Multi-Ply Twisted)

Tenacity

High Tenacity

Melting Point

Approx. 255°C – 265°C

Applications

Industrial Bag Closing

Perfect for closing woven PP/HDPE sacks used for packing cement, sugar, fertilizers, flour, animal feed, and chemical powders.

Agricultural & Bulk Packaging

The top choice for packaging heavy agricultural crop sacks and farm produce.

Heavy-Duty Stitching

Extensively utilized wherever high-capacity weight loads demand a tough, reliable industrial sewing thread.

Compatible Machines

Portable Bag Closer Machines

Perfectly compatible with handheld portable sack-stitching machines (such as Newlong, REVO, and equivalent series).

Industrial Plain Sewing Machines

Suitable for factory-grade stationary heavy-duty sewing setups.