Stage 3 — Properties
Evenness and Surface (Evenness)
What you see in the film
Close view of the thread body: how even it is and how closed the surface looks.
What you learn from it
An even, closed surface means less friction in needle and thread guides.
What you can say to a customer
“An even thread runs quieter through the machine. That shows up in your downtime, not only in the sample.”
Lustre and Loose Fibre Ends (Lustre and hairiness)
What you see in the film
Short close-up of lustre and of the small fibre ends standing out of the thread.
What you learn from it
Lustre is a visual property. Loose fibre ends cause friction and lint.
What you can say to a customer
“Lustre sells the topstitching seam. Hairiness costs you machine cleaning. Both come from the same thread.”
Cutting the Thread – the Cut End (Cut end)
What you see in the film
The thread is cut with scissors and the cut end is shown in close-up.
What you learn from it
The cut end shows how tightly the plies sit together and whether the thread frays.
What you can say to a customer
“A clean cut end is a good sign. If it frays right away, it will fray in the seam too.”
Breaking the Thread by Hand (Strength)
What you see in the film
The thread is pulled apart by hand until it breaks.
What you learn from it
How far it stretches before it breaks, and how the broken end looks, differ from fibre to fibre.
What you can say to a customer
“This is not a measured value, but you feel the difference between polyester and polyamide in one second.”