Difference between spun yarn and filament yarn

Yarns can be made with short discrete fibers or twisting continuous filaments. Spun Yarn and
Filament yarn are the two types of yarn and they have some differences that are given in this
Let’s introduce these yarns and see the key differences between them.

What is Spun Yarn

Spun yarn, sometimes called staple yarn is the yarn of fibers that have short discrete
lengths. It is produced by twisting fibers or filaments together by overlapping the fiber upon
one another. This twist can be an S twist or a Z twist. When the threads appear to go up the
left, we consider it an S-twist, and when the threads appear to go up the right, we consider it
a Z-twist. The two types of spun yarn are:
1) Ring Spun Yarn.
2) Rotor Yarn.
The yarn formed by the ring spinning technique is called ring spun yarn and The yarn formed
by the rotor spinning system is called rotor yarn.
Spun yarns can contain either a single type of fiber or various types of fibers twisted
together. We call this process of twisting the fibers together and creating spun fibers
Moreover, all-natural fibers except silk are spun fibers. This type of yarn is preferred for
apparel. When compared to filament yarn, spun yarn is hairy and softer. They also tend to
pill more than filament yarns (pills are small accumulations of fiber that form on the surface
of the fabric).

Spun Yarn: Blended Spun Yarn, Jute Spun Yarn, Linen Spun Yarn, Acrylic Spun Yarn, Viscose Spun Yarn, Polyester Spun Yarn, Cotton Spun Yarn

What is Filament Yarn

Filament yarn is the twisting of fibers that consists of very long, continuous filaments
grouped together. Filament yarns have two types:
1) mono-filament yarn
2) multi-filament yarn.
Mono-filament yarn consists of a single strand, while multi-filament yarn consists of two or
more strands twisted together.
The filament yarn can be natural, synthetic, or non-synthetic. This type of Filament yarn has
excellent uniformity as well as excellent strength. They are smooth and lustrous. This type of
yarn tends to have fewer pills.

Filament Yarn: Polyester Filament Yarn, Nylon Filament Yarn, PBT Filament Yarn, Polypropylene Filament Yarn, PVA Filament Yarn, Viscose Filament Yarn

Difference : Spun yarn vs Filament Yarn

Type of Fibers:
Spun Yarn is made of cotton, linen, wool, or synthetic fibers while Filament Yarns are made
of natural silk fibers as well as synthetic fibers
Length of Fibers:
Spun Yarn is a result of overlapping or twisting short fibers. While Filament Yarn is
something that is made by twisting the long fibers or filaments together continuously.
Spun Yarn has a dull or less lustrous look, while Filament yarns have a cool and lustrous
Filament Yarn is softer than Spun Yarn.
Filament yarn is more stronger than spun yarn.
Spun Yarn twigs less as compared to Filament Yarn.
Spun yarn is more hairy as compared to filament yarn.
Spun Yarn has a complex manufacturing process compared to Filament Yarn.
Spun Yarn is more absorbent while filament yarn is less absorbent comparatively.


Application of Spun Yarn

Spun yarns are suitable for use in the production of textiles, sewing, crocheting, knitting,
weaving, embroidery, and rope making. This is used in shirts, trousers, suits, home textiles,
and bed linen.

Application of Filament Yarn

Filament yarns are used in fabrics for apparel, hosiery, carpets, sportswear, etc. As
industrial yarn, it can be used for technical textiles.
So, these are the core things when we differentiate the yarns.
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