The decline in man-made Cellulosics output during the last third of
the 20th C was reversed and since 2000 the production of viscose
staple has more than doubled. It is now
between 5.5 and 6 million tonnes/year with more capacity planned. The vast majority of the
growth has been in Asia.
Courtaulds had hoped that environmental considerations would
mean Tencel would get the lion’s share of the growth* but this did not happen
under Lenzing. Apparently they didn’t want to lose control of their Tencel know-how and the rate of expansion required in Asia meant a rate of Tencel
plant scale-up greater than Lenzing were comfortable with.
So, viscose was the beneficiary of rapidly increasing demand for rayon and the scale
of the new viscose investments proved surprising to anyone involved with the old Courtaulds
plants. (3x-5x the productivity of
Courtaulds Mobile).
Tencel stagnated for
10 years after Grimsby SL3 started. Mobile SL1 was closed
down. Then the Mobile, Grimsby and
Heiligenkreuz plants were debottlenecked. SL1 was restarted with a viscose wash belt to
make wet-cut staple. Lenzing’s first new Tencel plant – a 67,000 tonner built on the Lenzing site in 2013-14 is now
fully operational although its output is apparently being sold into
pre-blends with cotton and viscose.
Of the world 2016 fibre capacity of about 100,000,000 tpa, Tencel is now around 220,000 tpa, viscose around 6,000,000 tpa, cotton around 25,000,000 tpa and polyester around 60,000,000 tpa. Further growth in polyester and cellulosics is expected, but new comfortable polyesters will probably mean the cellulosics proportion will be lower.
Of the world 2016 fibre capacity of about 100,000,000 tpa, Tencel is now around 220,000 tpa, viscose around 6,000,000 tpa, cotton around 25,000,000 tpa and polyester around 60,000,000 tpa. Further growth in polyester and cellulosics is expected, but new comfortable polyesters will probably mean the cellulosics proportion will be lower.
Overall, in the absence of any hard information from Lenzing, we guess about a third of the
pre-2000 Tencel capacity goes into Nonwovens if A100 production is excluded. Apparel remains the main market with Home
Textiles also doing well.
The main Tencel nonwoven market is disposable wipes:
Tencel/PP or PET blends are hydroentangled into baby wipes but also made flushable
via the wet-laid route. One major US
supermarket chain uses 1000’s of tonnes of
100% Tencel in wet-wipes. Electrical
papers, which like the wipes, Courtaulds Research started to develop in the
late 80’s, are now successful in battery separators and energy recovery systems for hybrid and electric cars.
World nonwoven production growth since 2000 has continued as
expected, reaching 10 million tonnes last year, a million tonnes of this being
viscose. Spun-laid processes remain the most important technology thanks to polypropylene’s continued dominance of the
diaper component market. Carded
nonwovens – the sector where rayon predominated but was losing share last
century – has been transformed by fast cards and low-cost hydroentanglement bonding machines
and has grown to be comparable in size with spun-laid. The technology continues to be a major user
of viscose for wipes, viscose usage in Europe having trebled since 2000 (to 150,000
tonnes/year)
Kelheim Fibres, the sole survivor of Courtaulds Viscose
operations, has been expanded to about 80,000 tpy capacity and concentrates on
specialities for nonwovens (Galaxy and Viloft).
It continues to dominate the US and EU tampon fibre market and has good
prospects in Latin America and (longer term) in Asia. It recently underlined its “Speciality Fibre
Producer” status by experimentally introducing a series of special viscose
fibres to the market – most of which would be instantly recognised by anyone
who happened to be in Courtaulds Viscose Research during the 70’s and 80’s. (SI fibre, Hollow Viloft, PM1, PM2, alloy
fibres etc.)
Lenzing will soon have a million tonne/year rayon staple
capacity – up from 300,000 tonnes in 2000.
The world production of dissolving pulp is now around 6.5 million tonnes/year. SAPPI, who bought Courtaulds SAICCOR dissolving pulp business in 1989 now produces around 1.4 million tonnes of dissolving pulp, and China produces a similar amount, some of this from bamboo and some from cotton.
Calvin Woodings
March 2016
* The growth was broadly in line with Tim Johnson’s expectations based on his 1989 Comfort Gap scenario. This predicted that global demographic and personal wealth trends would drive an increase in demand for textiles which could only be met by rapid expansion of synthetic and man-made cellulosic fibres in unison. (Comfortable Cotton's ability to expand would be restricted due to land/food shortages and the absence of further prospects for cotton yield increases.)
March 2016
* The growth was broadly in line with Tim Johnson’s expectations based on his 1989 Comfort Gap scenario. This predicted that global demographic and personal wealth trends would drive an increase in demand for textiles which could only be met by rapid expansion of synthetic and man-made cellulosic fibres in unison. (Comfortable Cotton's ability to expand would be restricted due to land/food shortages and the absence of further prospects for cotton yield increases.)