Villtex®

Poly Poly Core Spun Thread

core spun polyester thread
core spun polyester thread
Poly Poly Core Spun Thread
Poly Poly Core Spun Thread

Core Spun Polyester Thread

Hongfeng Villtex® Poly/Poly Core Spun Thread can be used in a wide range of fabric from silks to high performance material.With the advantage of excellent seam strength and superior low friction lubrication, Hongfeng Villtex® can enhance the appearance of sewn products and significantly improve the productivity and performance of the sewing production line.

Standard for colour fastness of core spun polyester thread

International standardNameDegree of staining
ISO 105 C10Wash  FastnessGrade 4
ISO 105  X12Rub FastnessGrade 4

Color fastness test of Villtex® Poly Poly Core Spun Thread

International standardSoap solutionTemperatureTimeDegree of staining
ISO 105 C105g/L60℃+/-2℃30MinGrade 4

Features of Villtex® Core Spun Polyester Thread

  • Excellent Strength
  • Excellent Seam Strength &Appearance
  • High-Level Color Fastness
  • OEKO-TEX Standard 100
  • Minimise Seam Puckering
  • Chemical Resistance

Further reading

Core Spun Polyester Sewing Thread

What is Core Spun Polyester Sewing Thread

Corespun threads, sometimes referred “pcore” or “polycore” or “cottoncore”, are made by wrapping a staple polyester or cotton wrapper around a continuous filament bundle of polyester fibers during spinning, and then plying these yarns into a sewing thread. The continuous filament polyester core makes up approximately 60% of the thread construction.

The strength depends on the core thread, and the wear resistance and heat resistance depend on the outer yarn. It is mainly used for high-speed and firm garment sewing.

Core Spun Polyester Thread is used where a high tensile strength is needed using automatic sewing machines and colour fastness is a requirement. Its strength means it is ideal for minimising sewing problems as smaller thread sizes can be used.

Application of Core Spun Polyester Sewing Thread

Core-spun polyester thread gives the look of a cotton thread but provides superior strength and durability.

Spun Polyester thread is ideal for any manufacturing need from apparel, auto upholstery, undergarments to high tech needs such as medical devices, shoes, and more.

  • Button hole stitching, ultra-thin overlock, blind stitch sewing
  • Elasticity, high grade trimming, jeans, blazers
  • Fine blouses that are susceptible to seam puckering, denim products that will be stone-washed or sand blasted
Poly Poly Core Spun Thread
Poly Poly Core Spun Thread

Advantages of Core Spun Polyester Sewing Thread

  • Higher strength per size (higher tenacity)
  • Greater uniformity in size, strength and other physical characteristics•
  • A higher initial modulus or resistance to stretching contributing to better loop formation and reduced seam puckering.
  • Better ply security – fewer unravel type thread breaks
  • Superior abrasion resistance & durability

Core Spun Polyester Thread VS Filament Thread

  • A softer “hand” or feel than a 100% continuous filament threads
  • A matte finish stitch appearance similar to a spun thread construction
  • Superior frictional characteristics compared to a continuous filament threads
filament polyester thread

Poly/Poly VS Polyester Cotton Core Spun Thread

The Poly wrapper contributes to :

  • Superior color fastness, chemical and abrasion resistance
  • Higher strength than cotton wrapped corespun threads
  • Superior “union dyeing” because of one-step dyeing process

The Cotton wrapper contributes to :

  • Superior needle heat resistance
  • A “wash-down” stitch appearance

What are the benefits of using core spun sewing thread on denim ?

  • 40 to 50% stronger than spun polyester threads the same size
  • Superior sewability on both manual and automatic machines with minimum interruptions – fewer restitched seams.
  • Helps to Minimize Open-Seams and Seam Failure
  • Allows the use of smaller diameter thread to minimize Seam Puckering or Needle cutting
  • Helps to minimize broken and cut stitches after finishing.

Cost Vs Performance

Core spun poyester threads are definitely more expensive than the spun polyester threads.

The usage of these yarns can increase the cost of production . However, using spun polyester yarns can increase the possibility of broken stitches and rejected garments or needing repairs.

A & E mentions that certain manufacturers have tried to use both Core Spun and Spun Poly to achieve a balance between costs and performance.

Since overedge seams consume the most thread, they will used spun polyester on these operations while continuing to using corespun threads on all topstitching and stress seam operations.