Dye bath lubricantsCrease prevention in wet processing

Lubricants 2004

Definition

Dye bath lubricants or wet processing lubricants are products which reduce fibre-fibre friction and fibre-metal friction.

Most products act on the surface of the textile material (like motor-oil in an engine)Textile softeners give mostly a nice soft hand but are mostly not the best lubricating products

Other products, like TANALYBE FF-type of polymer lubricants work differently, as also is clay. Here the friction of water is reduced drastically

Lubricants 2004

Options

Grease based products which lubricates the fabric itself and reduces friction of the fabric with the machine parts

Polymer based products which have affinity to the fibre

Polymers which work in the water-phase

Clay

Lubricants 2004

Grease based products

The mechanism of these types is that they have affinity to the substrate and give a smoothening effect

Reduction of fibre-to-fibre friction Reduction of fibre-to-metal friction

The efficiency of the crease mark inhibitor depend on the affinity for the textile fibre and on the lubrication effect of the oily, greasy

substance

In some cases additional benefits can be offered

Lubricants 2004

Types of Grease

There are a number of substances used as a Dye Bath Lubricant

Paraffin oils Fatty acid esters (synthetic) non-ionic +

anionic Ethoxylated fatty acid Fatty acids esters (natural) Fatty acids esters (modified natural) Phospholipids (Lecithin)

The emulsifier system also has an influence on the performance

Lubricants 2004

Fatty crease mark inhibiters

Spreading oilStable emulsion Instable emulsion

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Paraffin oils

No products in this area from Bayer

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Fatty acids esters (synthetic)

LUBIT CMEEspecially for Synthetic fabrics, e.g. light weight and delicate PES on jet Polyacrylic fabrics on overflow and star (estrella)

dyeing machine Non-ionic and low foaming

Lubricants 2004

Fatty acids esters (synthetic)

TANALUBE RFAnionic modified lubricant for Wool, Silk, Acetate, Triacetate and Cellulosic fibres extremely good crease mark inhibitor for delicate articles has also wetting, scouring and emulsifying properties has levelling properties for anionic and disperse dyes prevents channelling and air pockets (Beam, Jig) repair of wrinkles! on cellulosic fabrics by padding 20-30 g/l TANALUBE RF before going on the stenter

Lubricants 2004

Fatty acids esters (natural)

PERSOFTAL LUNon-ionic universal crease mark inhibitor as an alternative to the anionic PERSOFTAL L Can be used on all fibres, also with cationic dyestuffs

Remark: With the additional range of products it looses its importance

Lubricants 2004

Fatty acids esters (natural derived)

LUBIT CONon-ionic lubricant especially suitable for cellulose articles delicate cotton knits delicate viscose, modal viscose, polynosic fibres, (performs better than polymer products)

Similar to PERSOFTAL L (see slide PERSOFTAL L)(Conc.-version for local dilution is available now)We assume that LUBIT CO has a more pronounced affinity for cellulose fibres than PERSOFTAL L

Lubricants 2004

Fatty acids esters (modified natural)

PERSOFTAL LAnionic modified natural based lubricant which is “self-

emulsifying” Less susceptible for external influences like

temperature and salt additions very good performance on cotton, Polyester/cotton

blends and 100 % Polyester Can locally be formulated from Precursor

Remark:PERSOFTAL L IS VERY WELL ESTABLISHED ALL OVER THE WORLD > TOP SELLING ITEM

Lubricants 2004

Phospholipids (Lecithin)

LUBIT RL, LUBIT LC, TANEDE FSM (new) Excellent lubricants for synthetic fibres and their blends LUBIT RL will be replaced by TANEDE FSM and

recommended for 100% PES and blends with cellulose LUBIT LC is predestined for PES/wool Excellent penetrating effect of the goods (creeping oil

effect) Excellent emulsifiers for grease and oil LUBIT RL (TANEDE FSM) have also very good

levelling effect for disperse dyes Can avoid moiré-effect on 100% PES (Jet and Beam)

Lubricants 2004

Polymer based (fibre affinity)

LUBIT PRT This is a hydrophilic polymer which has affinity to the

polyester fibres It has a big smoothening effect and reduces greatly

fibre-to-fibre friction Non-ionic and non-foaming Multiple purpose product (see next slide)

Remarks For some very delicate warp-knits the friction becomes so low that

so-called “plug marks” can be formed. To high quantities in yarn application makes the yarn too slippery

Lubricants 2004

Polymer based (fibre affinity)

LUBIT PRT It removes residual oils from the fabric It removes residual sizes from the fabric Excellent cleaning effect for machines (Machines show

much less deposits of grease, oils and dyestuffs)

Excellent washing assistant in scouring and desizing operations especially for PES, but also PA (e.g. desizing operations on air bag fabrics)

See next slide

Lubricants 2004

LUBIT PRT how “washing” works

LUBIT PRT

Polyester

Fat

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TANALUBE FF (polymer)

Reduces the friction of water with textile fabricReduces the friction of water with steel/machine

Does not soften the fabric itself, internal friction in the goods remains!

can be widely used in textile processing also in garments

A rather high turbulence is required to unfold its property

Don’t forget: sometimes higher quantities are required then normally recommended

Lubricants 2004

Polymer based (water affinity)TANALUBE FF Very long polymer with some anionic groups, which

stretches in water especially in a flowing water stream (molecular weight > 1.000.000)

Is nowadays widely used because of low price. Its efficiency is very good if you use the right amounts.

This can be up to 8 ml/l for difficult articles (for warp knits which are not heat-setted and tend to shrink very much during the dyeing operation)

In low amounts the effects are sometimes limited! For sensitive articles (e.g. Viscose) it is often better to

use LUBIT CO or PERSOFTAL L (wet stiffness of viscose)

Does however work well on Lyocell fibres (2-4 ml/l)

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TANALUBE FF (polymer)

- - -- - - -

- - -- - - -

- - -- - - -

- - -- - - -

- - -- - - -Water layer

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TANALUBE FF (polymer)

Reduces the friction of water. Polymers applied in the water used by firemen give up to 30% more water through the tube

Lubricants 2004

Polymer based (water affinity)

NOFELT WA Very long non-ionic polymer with, which stretches in

water especially in a flowing water stream (molecular weight: several million)

Especially for wet processing of woollen fabric to prevent felting of the wool.

For washing and dyeing operations Recommended by the IWS and the well know wool

institutes of Leeds and Aachen

Remark:Should not be used in dyeing PES/Wool as precipitations with disperse dyes can occur

Lubricants 2004

Clay chemistry TANNEX GEO

TANNEX GEOIn all processes in which TANNEX GEO is used a dye bath lubricant is nor required.

The hydrated clay particles are very slippery and will provide a low friction of the textile goods.Low fibre-to-fibre and lo fibre-to metal friction..

TANNEX GEO also softens internally. For exceptional cases of stiff and dense fabric it might be useful to use an additional lubricant

In that case use either LUBIT CO or PERSOFTAL L.DO NOT USE POLYMERS!!! (TANALUBE FF types)

Lubricants 2004

Choice????

Agreed: we have quite some products for this application

Try to get familiar with them

Especially those products which have more functions than only lubrication of the goods during wet processing

Stiff fabrics require also internal lubrication!!!