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Lyocell Threads

The common sewing threads are, generally, made from the spun fibres or under the form of continuous filaments covered with fibres, called corespun sewing threads.
In the production of corespun sewing threads, the cotton fibres were the first to be used, but during the last two decades the polyester fibres (PES) and the polyamide fibres (PA) were frequently used owing to their superior tenacity when compared to the low capacity of the cotton sewing thread.
There is a disadvantage of the synthetical threads and filaments because they cannot be dyed in a simple process (in only one phase) as it happens with the cotton threads. Synthetical threads can't be mixtured with cotton garments already sewn.

To overtake the problems caused by the different kind of threads, already mentioned, it came the necessity of developing new threads, like the sewing hire with the shaft of, continuous filaments of lyocell, covered by cotton fibres; This thread is patent (patent number 102650) by VALFIOS company and thre patent authors are Prof. Lubos Hes, Filipe Artur dos Santos Henriques and Engineer Fernando Pinheiro Novais).

Note: this line is still in improvement and it's not possible to be supplied at the moment.

The discovery is due to a sewing thread with a basis of continuous filaments to garment cloths in a proportion of 50% of Lyocell basic thread inside and at least 15% of cellulose fibers (as cotton or viscous, wrapped around the shaft, on the outside).

Because of it's superior tenacity "bidimensional" stability and the low friction surface, this woven is mainly suitable to sew woven of medium and heavy cotton such as: jeans, velvet, flannel, cotton, jackets, cotton over clothing, etc. Still more this thread particularly cellulosic has the advantage to dye raw cotton sewn clothing (woven and thread) simultaneously.

This new sewing thread has the following advantages:

  • It's a new sewing thread suitable to fulfill the present market demands that is just in time for the delivery of the product. The Lyocell, the cotton and the viscous fibers are of cellulose nature and can be dyed just like one woven or together with the sewing product, in only one dying process (better in a direct way), what is a great financial economy. This process will reduce the woven stock originally dyed in 300 colours and tonalities, what will become much more economic.
  • Tenacity, elasticity and dimensional stability, which are equal or better than the characteristic parameters of the corespun sewing thread PES/CO.
  • An ecologic sewing thread made of natural renewable resources, which is going to be decomposed automatically when thrown away. The wasted woven are also be burnt without toxic gases.
  • A sewing line highly resistant to high temperatures caused by friction from sewing process, that is able to follow the modern sewing machine technical evolutions opposite to the common axed sewing thread PES/CO.
  • A sewing thread with cellulose cover (cotton or viscose) - shows an excellent adhesion to the Lyocell surface owed to the high typical friction surface of the only filament of Lyocell.


Colored Line:

Valfios offers a unique service in the market:

  • Reproduces the exact colour for the sewing  thread of any order, in case the ideal colour doesn't exist in our colour card;
  • The colour is reproduced and present between 2 to 5 working days;
  • Lots are adapted to the client's quantities.

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