The essential answer
At a glance
Polyester filament and polyester spun dyed yarns serve different briefs. Fit depends on construction, denier or count, application, shade, quantity, and treatment.
Start with Construction
Yarn construction usually narrows the yarn construction before shade development starts.
- Polyester filament references include air-textured, continuous HT, continuous twin HT, and textured/Roto constructions.
- Polyester spun references include Air-Jet, Ring Spun, and SHT-RT constructions.
- The listed Roto references are 150, 300, 600 and 900 Roto; confirm the exact yarn specification and monthly requirement before planning supply.
Application Changes Fit
A trim, webbing, apparel, or technical textile requirement may point to different yarn families even when the shade target is similar.
- Share end use, denier or count, target quantity, and destination.
- Mention whether FR, UV, or a custom finish is being evaluated.
- Use WhatsApp first when unsure; use the secure form for a written requirement.