The common sewing threads are, generally, made from the spun fibres or under the
form of continuous filaments covered with fibres, called corespun sewing
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
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 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.
elasticity and dimensional stability, which are equal or better than the
characteristic parameters of the corespun sewing thread PES/CO.
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.
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.
Valfios offers a unique service in the market:
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;
adapted to the client's quantities.