Intro
In case of core spun threads, the single yarns consist of a core of multifilaments and a sheath of fine fibres. In sewing thread production, this finished strand is called core yarn. The ratio of core to sheath is usually about two-thirds to one-third (the sheath envelops the core but does not cover it completely). This can vary depending on the application of the sewing thread.
The multifilaments in the core are usually made of polyester. Other raw materials are rarely used for this purpose. Polyester or cotton fibres are used for the fibre coating. A distinction is therefore made between polyester/polyester core spun thread and polyester/cotton core spun thread. Polyester/polyester core spun threads can be covered with cut staple or staple fibres. The latter are rather rare today. Almost all polyester/polyester core spun threads are covered with polyester cut staple fibres modelled on high-quality cotton with a length of approx. 40 mm.
Like spun threads, core spun threads have a smooth and textile surface. The combination of a multifilament core and fibre covering makes core spun threads particularly high-performance. Their tear resistance and abrasion resistance are significantly higher than those of spun threads. The sewability of core spun threads is excellent and enables flawless processing even for difficult tasks, such as multidirectional sewing operations and laundry buttonholes. This is why core spun threads have a very wide range of applications.
The polyester/polyester core spun thread Saba is one of the most important products in the AMANN range. An example of a polyester/cotton core spun thread is AMANN's Rasant.
FAQ
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A core spun thread consists of a multifilament core surrounded by a sheath of fine staple fibres. The finished strand is referred to as a core yarn.
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The core is typically made of polyester multifilaments, while the outer sheath consists of polyester or cotton fibres. The core-to-sheath ratio is usually about two-thirds core and one-third fibre covering.
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Polyester multifilaments provide high tensile strength and abrasion resistance, making them ideal for the load-bearing core of the thread.
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In polyester/polyester constructions, both the core and the sheath are made of polyester. In polyester/cotton constructions, the core is polyester and the outer covering is cotton, giving the thread a more natural surface appearance.
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The multifilament core carries most of the load, significantly increasing tear strength and abrasion resistance compared to pure spun constructions.
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Core spun threads have a smooth yet textile surface due to the fibre sheath, combining performance with good seam appearance.
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Yes. Their excellent sewability allows reliable processing even in multidirectional sewing operations and challenging applications such as laundry buttonholes.
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In polyester/polyester core spun threads, the covering often consists of cut staple fibres with a length of approximately 40 mm.
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Core spun threads are widely used in apparel, workwear, denim, shirts, trousers and general garment manufacturing where strength and processing reliability are essential.
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Because they combine the strength of a continuous filament core with the handling and appearance advantages of a fibre covering.