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How Recycled Jeans Yarn is Made: Sustainable Crafting with Fancy Yarns Australia

Writer's picture: Caterina SullivanCaterina Sullivan

Jeans flying in the air before being recycled into yarn

Denim is a staple in wardrobes across the globe, cherished for its durability, style and timelessness. But as fashion trends evolve and jeans become worn out or unwanted, they often end up in landfills.


Enter recycled jeans yarn - a sustainable, innovative solution that breathes new life into discarded denim while reducing environmental waste. This unique yarn is made through a meticulous process that transforms old jeans into beautiful, versatile fibres ready to be knitted, crocheted or woven into new creations.


In this article, we’ll explore how recycled jeans yarn is made, from sourcing the jeans to the spinning of the final fibres. We’ll also delve into its benefits and offer ideas for how this eco-friendly yarn can be used in your crafting projects.


Step 1: Sourcing the Jeans

The journey of recycled jeans yarn begins with sourcing raw material: old denim. This step involves collecting unwanted jeans from various sources, including:

  • Post-Consumer Waste: These are jeans donated to textile recycling programs, thrift stores or clothing drives. Often, these garments are too damaged to be resold but are perfect for recycling.

  • Post-Industrial Waste: Denim scraps from clothing manufacturers, such as offcuts from pattern cutting, are also collected. These scraps are often new and unused but would otherwise go to waste.

Recycling companies work closely with donation centres, retailers and manufacturers to gather as much denim as possible. Each pair of jeans collected is a step toward reducing textile waste and promoting circular fashion.


Step 2: Sorting and Preparing the Denim

Once collected, the jeans are carefully sorted based on factors like colour, fabric composition and condition. Sorting is crucial because it determines the quality and characteristics of the final yarn. For example:

  • Light and dark-coloured denim may be separated to create consistent shades or blended for unique marled effects.

  • Stretch denim, which contains high proportions of elastic fibres like spandex, is often avoided because it complicates the recycling process.

After sorting, the jeans are prepared by removing any non-fabric components. Zippers, buttons, rivets and labels are cut off to ensure the remaining denim is purely fabric. These metal components are often recycled separately.


Step 3: Shredding the Denim

The prepared denim is then shredded into smaller pieces. Large industrial machines called shredders or Fiberizers are used to break down the denim into its raw fibre form. The fabric is pulled apart into individual cotton fibres, which can then be processed further.

Shredding is a delicate process because over-processing can weaken the fibres. Skilled technicians monitor the machines to ensure the fibres retain enough strength for spinning while achieving the soft, fluffy consistency needed for yarn production.


Collection of recycled jeans ready for processing into yarn

Step 4: Cleaning and Blending

After shredding, the raw fibres undergo thorough cleaning to remove any remaining debris, dyes or impurities. Depending on the process used by the manufacturer, this may involve washing the fibres or treating them with eco-friendly chemicals to prepare them for dyeing and spinning.


Some yarns are also blended at this stage. Recycled denim fibres are often blended with other materials like virgin cotton, bamboo or wool to create different properties relating to durability, elasticity, warmth and softness. For example, combining recycled denim with virgin cotton can make the yarn stronger, while blending it with wool adds warmth and a touch of luxury.


Step 5: Dyeing the Fibres

One of the unique aspects of recycled jeans yarn is its natural colouration. Many manufacturers opt not to redye the fibres, instead using the original shades of the denim to create yarn with a beautiful, earthy palette of blues, greys and neutrals. This approach gives the yarn a charming, rustic character.


However, if specific colours are desired, the fibres can be dyed using eco-friendly processes. Some manufacturers use low-impact dyes or natural dyes to create vibrant hues while minimising environmental impact.


Step 6: Spinning the Yarn

Once the fibres are cleaned, blended and dyed, they are ready to be spun into yarn. Spinning transforms the loose fibres into continuous threads, which are then twisted together to create yarn with the desired thickness, strength and texture.


Spinning machines can produce yarn in various weights, from fine threads for lightweight projects to chunky yarns for cozy knits. Some recycled jeans yarns retain a slightly textured, rustic feel, reflecting their upcycled origins, while others are spun to be smooth and soft for more refined projects.


Dungarees Recycled Jeans Yarn
Dungarees Recycled Jeans Yarn

The Benefits of Recycled Jeans Yarn

Recycled jeans yarn offers a wealth of benefits, both for crafters and for the planet. Here’s why you should consider adding it to your stash:

1. Environmentally Friendly
  • Reduces Waste: By recycling old denim, this yarn prevents jeans from ending up in landfills, where they would take years to decompose.

  • Saves Resources: Recycling denim uses significantly less water and energy compared to producing new cotton. It’s estimated that it takes around 6,800 litres (or 1,800 gallons) of water to grow the cotton needed for one pair of jeans. By reusing existing fibres, we conserve valuable resources.

  • Minimises Pollution: The process avoids the need for harmful pesticides and fertilisers used in conventional cotton farming.

2. Sustainable Crafting

Using recycled jeans yarn aligns with eco-conscious crafting values, allowing makers to create beautiful projects while reducing their environmental impact. It’s a tangible way to support sustainability in the textile industry.

3. Unique Aesthetic

Recycled denim yarn has a distinct look and feel, often showcasing subtle variations in colour and texture that make each skein one of a kind. These characteristics add charm and personality to your finished projects.

4. Durable and Versatile

Denim is known for its durability, and recycled jeans yarn inherits this strength. It’s perfect for crafting long-lasting items that can withstand wear and tear.


How to Use Recycled Jeans Yarn in Your Projects

Recycled jeans yarn is versatile and can be used in a variety of knitting, crocheting and weaving projects. Here are some ideas to inspire your next creation:

1. Garments
  • Lightweight tops and cardigans

  • Casual sweaters with a rustic vibe

  • Durable jackets or vests

2. Accessories
  • Denim-inspired bags and totes

  • Textured hats, scarves and gloves

  • Belts and headbands

3. Home Decor
  • Cozy throws and blankets

  • Cushions with a rustic or industrial feel

  • Rugs and wall hangings

4. Gifts
  • Handmade denim-inspired keepsakes

  • Baby blankets or garments with an eco-friendly touch

  • Stylish, practical items like placemats or coasters


Recycled jeans yarn is more than just a fibre; it’s a movement toward sustainable crafting and mindful creativity. By choosing yarn made from upcycled denim, you’re not only reducing waste and conserving resources but also supporting innovation in the textile industry.


At Fancy Yarns Australia, we’re proud to offer a range of eco-friendly yarns and recycled yarns, including those made from recycled jeans, to help you craft with purpose. Whether you’re knitting a cozy scarf, crocheting a tote bag or weaving a statement piece for your home, recycled jeans yarn is a unique and meaningful choice that aligns with your values.

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