Optimization of Setting Rules

Heat-setting Devices

While applying larger stones, it is advisable to use longer times, or raise the temperature and increase the pressure. On the contrary, smaller stones require a lower temperature and possibly shorter application times and lower pressure.
While applying the stones to thicker fabrics (pile knitted fabric, artificial fur, denim, velour, alcantara), it is advisable to increase the pressure, possibly to use longer application times. On the contrary, more delicate fabrics (sheeting, tricot) require a reverse procedure.
While applying the stones to very delicate fabrics (dupion, shantung) by means of planar heat-setting devices, it is necessary to test whether the Teflon protective sheet should be inserted between the stones and the heating element (iron).
A higher pressure in the correct combination with the application temperature and application times contribute to better results. An excessive pressure may damage the stones, or cause undesirable look of the fabric around the stones.
If the adhesive unduly soaks into the carrier fabric, it is necessary to shorten the application time first, and then to reduce the set pressure or temperature.
The point heat-setting device reduces the probability of damage caused to the textile material around the stone.

In the event that any stone gets separated from the adhesive layer after application, with the adhesive soaked into the carrier material and the stone stuck to the device’s nozzle, reduce the pressure. Follow the same procedure if the stone gets broken.
If the adhesive unduly soaks into the carrier fabric, or the fabric gets burnt or damaged, first adjust the time to lower values, reduce the pressure, or combine both. To achieve optimum results, it may sometimes take some time.
Thicker carrier fabrics (e.g.: denim, velour) require a higher pressure as well as longer application times.
While applying larger stones, it is advisable to use longer times, or increase the pressure. On the other hand, smaller stones require shorter times and a lower pressure. The correct pressure adjustment may vary between 1 and 6 bars (100kPa – 600kPa / 14,5 PSI – 87,0 PSI).
While using extremely short application times, a slight change even by one tenth may affect the final outcome of your work.