Products

SAMGLOPAD REACTANT SYSTEM

The colouration of textiles with pigment/resin is not new.  However, while it is easy to apply, there are serious advantages, mainly harsher handle and limitation on rubfastness, especially wet rubfastness.

The SAMGLOPAD REACTANT SYSTEM overcomes these problems, by reacting the colour with the fibre and simultaneously with resin.  This is a condensation reaction.  Very soft and fast dyeings are obtained in light and up to medium shades.

The method is applicable to all kinds of fibres and is particularly useful for fibre blends, the most popular fibre blend at present is polyester/cotton, of course.

There are big cost savings compared to conventional methods, which are illustrated by the following process comparisons:

The advantage are clear:

• Single stage process
• Simple procedure
• No seconds, as results can be observed on the first metre sampled and quickly adjusted if necessary.
• As a result of 1-3, low processing costs.

For knitwear the advantages are at least the same.  As knitwear is finished on the stenter anyway, there is no need to use expensive dyeing techniques, such as jet dyeing.

For example, a P/C dyeing in the jet with disperse and reactives takes about 10 hours.  If the shade has to be adjusted it takes even longer and the chemical costs can be doubled or even more.

With the SAMGLO REACTANT PROCESS, the knitwear is padded with the finishing chemicals plus colour and processed through the stenter at speeds between 25 - 50 per minute; depending on the length of the stenter.

Some important points should be considered:

• Pretreatment of the goods - to obtain a uniform appearance of the goods and good fastness properties, the fabric must be subject to careful pretreatment, it must be free of impurities and have good absorbency.  Surface active substances should not be used to improve the absorbency of the goods, as this can cause increased colour migration and could result in a drop of wet crock fastness
• Bath preparation - the bath should be prepared at room temperature.  Temperatures above 35° C should be avoided.  Feed tanks should be fitted with stirrers to ensure homogeneity of padding liquor.
• Padding - to limit migration to a minimum the liquor pick-up should be as low as possible.  We have incorporated a unique chemical in the system to greatly reduce the tendency for migration, even under adverse conditions.
• Drying and curing - the goods can be dried ( 100°C - 200°C ) and subsequently cured; 1 min at 180°C, or flash dry/cured 1 min at 190°C, depending on stenter characteristics>  A prepared method for knitwear is to dry and cure in one run, by progressively, increasing the temperature in the stenter bays.
  
  Any Calendar treatment should be carried out prior to curing.
  
  TYPICAL APPLICATION EXAMPLE

If crease recovery or additional knit stability is required, please add 50 - 100 g/1 Samglo DMEU Resin to the padding liquor.  Other resins can also be used.  Similarly other handle modifiers can be used, however in such cases it is recommended to check compatibility and dyebath stability first.

The individual components have following functions: