The polyester threads may all look the same, except for the color difference. Before you buy or use thread for your next project, a look at the different aspects of thread quality will make your crafting experience better. A deeper look at the difference between Staple Spun Polyester Threads and Continuous Filament Polyester Threads will help you make the best selection for your project.
Read More: Thread for Sewing Machine
Read More: Filament Sewing Thread
Etlehn® Staple Spun Poyester Sewing Thread Parameters
Doyte® Filament Polyester Sewing Thread Parameters
RA: Roughness Average. BSA: Breaking Strength Average. EBA: Elongation at Break Average. DHS: Dry Heat Shrinkage. BWS: Boiling Water Shrinkage
Staple Spun Polyester Threads vs Continuous Filament Polyester Threads
Staple Spun Polyester threads are manufactured from high tenacity staple fibers. A typical high tenacity fiber used for sewing thread would be 1.2 denier, which is a measure of the linear density and 38mm long with a tenacity of at least 7.5 grams per decitex. Some thread producers use a fiber length of 45mm or even 55mm depending on the machinery they have available. SSP threads are produced in a wide range of constructions and sizes, tex and ticket numbers, to accommodate most general sewing applications.
- Continuous Filament Polyester Sewing Threads produced by Hongfeng are made from 100% High-Quality Filament Polyester.
- Continuous Filament poyester threads are significantly stronger than their equivalent size in Corespun, SSP (Staple Spun Polyester) or Cotton. Continuous Filament Polyester Sewing Threads are used in sewing applications where the seam strength is particularly important such as footwear and fine leather goods.
- If you feel some type of fuzz around your thread, this indicates it was produced with short fibers and is considered a weak thread.
Four of Continuous Filament Polyester Sewing Threads
- Soft CF(Continuous Filament) Polyester Thread: Which is the simplest form. In the production of a continuous filament yarn the filaments are gathered from the spinneret into a continuous strand, each strand comprising a specific number of filaments dependant on the desired characteristics.
- Soft CF(Continuous Filament) Polyester Thread: These strands are then combined and twisted conventionally into plied constructions similar to the post spinning processes used for spun threads.
- Bonded Polyester Thread: In this case, the threads are coated with a soluble resin Polyurethane for Continuous Filament Polyester. After application, the resin is cured and dried which has the effect of holding the plies together. The application of the bonding agents also reduces the abrasion on the thread during the sewing operation.
- Corespun polyester threads are a combination of a filament polyester core thread wrapped in spun polyester. It is also known as ‘Poly-core spun-poly’, “P/P”, and “PC/SP” thread. The benefit of using a core spun polyester thread like OMNI or OMNI-V, is the added strength that the filament core adds. OMNI and OMNI-V are favorites for quilting with their matte finish and strong tensile strength.
- Trilobal Polyester: It is a specific type of Continuous Filament Polyester mainly used for embroidery thread.
Works Cited: Thread Production 101