Gunold SULKY 40 – 100% Viscose
The Premium Thread with a Colour Guarantee!
SULKY stands as a leading embroidery thread worldwide, known for its impeccable quality and brilliant colour retention.
Made from 100% branded viscose, this premium thread offers exceptional results for all your embroidery projects.
And nature benefits too: SULKY® is produced in a particularly resource-saving and environmentally friendly way and is also bio-degradable!
Choose from the Miniking or Cone options below.

Choose a colour
Pick your colours and quantity below, then scroll down to proceed to checkout.

Choose a colour
Pick your colours and quantity below, then scroll down to proceed to checkout.
Summary of SULKY® Thread:
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Specifications: Strength 40 | Nm 70/2 | dtex 134×2
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Material: 100% branded viscose
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Key Features: Premium quality with a silky smooth shine, even colouring, excellent colour fastness, and long-lasting brilliance.
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Eco-Friendly: Produced sustainably and fully biodegradable.
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Performance: Lower elongation than polyester, resulting in smoother embroidery and reduced fabric warping.
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Note: Use the same dye lot for consistent colour; dye lots are stamped on cartons.
Material Composition: 100% Viscose (biodegradable)
Öko-Tex certified:

Colour Changes in Embroidery Threads Due to Chlorine
Discolouration of embroidery threads can often be caused by the use of chlorine-containing products, such as bleach or chlorine-based stain removers, during washing or spot cleaning.
SULKY® threads meet high standards for colour fastness, including resistance to washing, light and perspiration. However, chlorine-based additives are not recommended for artificial machine-silk threads, as they can cause colour changes.
The effect of chlorine can vary depending on the colour, concentration of chlorine and washing temperature. As each colour contains different dye components, some colours may be more affected than others, and discolouration can sometimes occur only in parts of an embroidery.
Chlorine can also damage the viscose fibres themselves at high concentrations, even if the dye were completely chlorine-resistant.
For items such as workwear that may be exposed to chlorine or harsh washing conditions, we recommend POLY 40 chlorine-resistant polyester embroidery thread.
Looking for something specific?
If you can’t find what you need on our website, give us a call or send an email.
Call us on 0115 9459460, or drop us a message at danielle@ajsemb.uk
Our experienced team is always ready to provide advice, recommend the right product or talk about our special offers.








