Dyeing

Staple dyeing is applied primarily to natural plant fibres (such as cotton, linen, hemp, ramie…), natural animal fibres (such as merino wool, lambswool etc which include the so-called natural LUXURY fibres such as alpaca, angora, cashmere, mohair, vicuna, silk, lama, camel hair, beaver hair, deer hair…), synthetic fibres (nylon, polyester, acrylic, modacrylic, aramid and meta-aramid also in microfibre…), artificial fibres (bamboo, viscose, acetate, triacetate, lyocell, modal…) or feather and down.
Staple dyed fibres are used in different production processes of the textile chain and, for example, following carded spinning or open-end spinning, they are transformed into yarn and later into fabrics for clothing or furniture. Other production processes on staple dyed fibres allow to produce non-woven fabric, ecological fur, needle-punched fabrics, etc. 
The staple raw materials for carded spinning can also come from the regeneration of waste, rags and scraps of previous textile production processes. Fibres are recovered which, appropriately processed, are used in the creation of yarns for knitting and fabrics for clothing. These fibres, commonly called regenerated, have always been the typical product of PRATO.

In addition to dyeing, the following treatments are also available:
- Depigmentation
- Shrink-resistance treatment 
- Flame-retardant treatment 
- Anti -moth treatment 
- Anti-bacterial treatments

“Everyone to Prato and everyone in rags, the history of Italy is going to end” wrote Curzio Malaparte in his timeless Maledetti Toscani.

Top dyeing is applied to natural plant fibres (such as cotton, linen, hemp, ramie..), natura animal fibres (such as merino wool, lambswool etc including the so-called natural luxury fibres namely alpaca, angora, cashmere, mohair, vicuna, silk, lama, camel hair, beaver hair, deer hair,…) synthetic fibres (nylon, polyester, acrylic, modacrylic, aramids and meta-aramid fibres, also in microfibre), artificial fibres (bamboo, viscose, acetate, triacetate, lyocell, modal), processed in the form of combed sliver. 

In addition to the dyeing process the following treatments are carried out:
-Shrink-resistance treatment (MacroWash): This treatment stabilises the structure of wool fabrics or wool blend when washed with water at 40/50°C.
- Depigmentation
- Flame-retardant treatment 
- Anti -moth treatment 
- Anti-bacterial treatments 

If requested, Blending is also carried out (mixing slivers of tops of different colours and fibre with each other).
The raw materials in tops are used primarily to create combed yarns for knitting and clothing.

The choice, in contrast with the trend of the rest of the sector, to install a dyeing unit for yarns in 2008 proved a fascinating challenge for the Group. The great skill of our technicians and sharing a business culture focused on absolute quality, together with constant service, have ensured its success. 
Our production capacity for the yarn department is 4000 Kg/day.
Our machine park consists of two machines of two yarns, two machines of four yarns, one machine of twelve yarns, three machines of twenty yarns, five machines of fifty yarns, three machines of one hundred yarns, two machines of two hundred ten yarns and one machine of four hundred and twenty yarns.
Yarn dyeing is applied to natural plant fibres (such as cotton, linen, hemp, ramie..), natural animal fibres (such as merino wool, lambswool etc including the so-called natural luxury fibres namely alpaca, angora, cashmere, mohair, vicuna, silk, lama, camel hair, beaver hair, deer hair,…) synthetic fibres (nylon, polyester, acrylic, modacrylic, aramids and meta-aramid fibres, also in microfibre), artificial fibres (bamboo, viscose, acetate, triacetate, lyocell, modal), 
The processed yarns are used primarily for sectors of knitting, yarns for clothing and furniture.

In addition to the dyeing process the following treatments are carried out:
- Depigmentation
- Shrink-resistance treatment (MacroWash)
- Flame-retardant treatment
- Anti-moth treatment
- Anti-bacterial treatments
- Water-repellent treatment 
- Oil-repellent treatment 

The technique of printing (SPACE DYEING) on yarns in spools, more commonly known as ASTRODYE, allows the application of different colours on the same spool of yarn to obtain a print effect.
This type of processing can be carried out on all types of yarn and the finished product is used for knitting, clothing and furniture.

Gruppo Colle merges tradition and technology with the treatment for combed sliver Vigoureux. It is a type of Dyeing, commonly known as Vigoreux Print which allows to create effects on combed sliver which give the finished product a particularly fine and even blend.