TECHNICAL INFO
Solvron is easily dissolved in plain water without the need for chemical agents and because it is spun by the Dry Spinning method, no chemical solvents are used which qualifies it for Oeko-Tex Accreditation.
Manual For Dissolving
- 1. Submerge Solvron Directly Into Hot Water:
To ensure quick and even dissolving, heat up the water to the required temperature before submerging the goods.
If Solvron PVA is placed in cold water and the temperature is then raised gradually, Solvron will start shrinking without breaking or dismembering. As the temperature arrives at the required temperature, only then will Solvron dissolve.
- 2. Sufficient Bath-Ratio / Stirirng, Over Flowing:
The suitable bath-ratio of water to goods is 1:30 based on weight. It should be sufficient enough to facilitate prompt dissolution and also to allow free movement of the goods.
If too many goods are placed in limited water, dissolving will become difficult. Stirring / agitation is essential to promote rapid dissolution as is continual over-flowing / replenishment of clean water.
- 3. Dissolving Time:
This differs depending upon how much and in what application Solvron is used. If Solvron is placed in direct contact with hot water without being covered or wrapped by some insoluble material, dissolving is easy and instant.
If the Solvron yarn is covered or wrapped by insoluble materias to the extent that it prevents the free flow, in and out of hot water then dissolving will take much longer.
Generally speaking, 10 - 20 minutes of initital boiling, followed by secondary boiling in fresh hot water will ensure effective dissolution.
Solvron dissolves in hot water but it does not diffuse away like gas does. Before Solvron dissolves, it transforms into a glue-like solution of PVA which promptly dissolves away in hot water if the temperature is hot enough. Re-boiling in fresh hot water and thorough rinsing in warm or hot water helps to ensure no PVA residue remains. If PVA residue remains in the goods, then the object will be stiff when dry.
- 4. Facts that can influence the dissolution.
- A) The dissolving temperature may need to be increased if the goods have been heat-set prior to the aqueous treatment.
The dissolving points of SH, SM, MH types may change after being heated at 160 ' C +
The dissolving points of SL, SF may change after being heated at 120 ' C +
SH, SM and SLH types are suitable for steam - setting.
B.) If tension is applied to the goods during the dissolving process this could prevent Solvron from dissolving.
C.) If the goods are twisted, the flow of hot water in and out will be prolonged and will require a higher treatment temperature and / or a longer treatment time.
D.) Solvron can be influenced by certain chemicals making it hard or impossible to dissolve. Please avoid direct contact with the following:
Salts like sodium sulphate, sodium chloride, alkali's such as caustic soda ( sodium hydroxide ) and heavy metals like chromium, formalin and reactive dyestuffs etc ..
It is important to wash / scour the goods thoroughly to remove all traces of Solvron before being dyed with reactive dyes.
