Recycled yarns: what you need to know for proper machine processing

In our journey with Hircus Filati, the search for quality materials is always accompanied by a great focus on sustainability. This is precisely why recycled yarns have become, in recent years, a valuable resource, capable of combining respect for the environment and artisanal creativity.

However, those who work with these materials know that they are not exactly identical to yarns made with virgin fibers. They have their own technical personality, with specific characteristics that are important to know to maximize their value, especially during machine processing.

What are recycled yarns?

Recycled yarns are created from the recovery of industrial textile waste or discarded garments. Through a mechanical or chemical recycling process, these materials are regenerated and transformed into new fibers, ready to be spun and become new yarns.

Mechanical recycling is the most widespread: fabrics are literally shredded until they are reduced to fibers. This method, however, has a side effect: it shortens the length of the fibers, influencing the characteristics of the final yarn.

Shorter fibers, more delicate yarn

Compared to yarns made with virgin fibers (longer and stronger), recycled yarns have shorter fibers and tend to be:

• Less resistant to tension.
• More fragile at connection points.
• More prone to breakage during processing, especially on knitting machines and looms.

How to adapt machine processing for recycled yarns

To work smoothly with recycled yarns and ensure good production performance, it is important to follow some precautions:

1. Reduce processing tension

The tension applied to the yarn must be lower than that used with virgin yarns. Excessive tension can cause the yarn to break.

2. Regularly check the yarn

Recycled yarns may have natural irregularities due to the regeneration process. It is useful to frequently inspect the yarn during processing, to immediately identify any critical points.

3. Adjust machine speed

In some processes, slightly reducing the speed can improve yarn performance, reducing mechanical stress on the yarn itself.

4. Prefer less compact processes

If possible, it is better to choose more open and soft knit structures or fabrics, which require less tension on the yarn.

5. Training and awareness

Working with recycled yarns requires knowledge and attention. Training technical or artisanal personnel on these specifics is a valuable investment to limit waste and interruptions, and ensure a quality final product.

Sustainability and technical innovation: a possible combination

Choosing recycled yarns means embracing a philosophy of conscious sustainability, where every action – from the selection of raw materials to how they are processed – contributes to building a more ethical future for the textile sector.

We at Hircus Filati believe that beauty, quality, and respect for the environment can coexist. With the right technical skills and a little passion, recycled yarns can also become protagonists of unique and durable creations.