Point heat-setting devices are modern industrial appliances that enable simultaneous point heat and pressure effect exerted onto a single stone. The heating element heats the low-melting adhesive layer from below through the fabric. An automatic feeder locks the stone in position and the device exerts pressure onto the stone from above, i.e. from the stone’s table in the direction of the heating element positioned under the fabric.
The typical feature of this device type is a brief but intensive heat effect exerted onto a small area, hence the name “point devices”. This has the advantage of being gentle on textile materials, with very little likelihood of causing them visible damage.
Point Heat Setting Devices – loose stones
| Time (sec.) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Temperature (°C/°F) | 120/248 | 130/266 | 140/284 | 150/302 | 160/320 | 170/338 | 180/356 | 200/392 | 220/428 |
| Synthetics | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3.5 | 3 |
| Silk | 14 | 13 | 11 | 9 | 7 | 5 | 4 | 3.5 | 3 |
| Cotton | 15 | 13 | 11 | 9 | 7 | 5 | 4 | 3.5 | 3 |
| Linen | 15 | 13 | 11 | 9 | 7 | 5 | 4 | 3.5 | 3 |
| Viscose | 18 | 15 | 12 | 9 | 7 | 5 | 4 | 3.5 | 3 |
| Wool | 25 | 22 | 19 | 16 | 13 | 10 | 8 | 7 | 6 |
| Denim | 25 | 23 | 21 | 18 | 15 | 12 | 10 | 9 | 8 |
| Lycra | 25 | 21 | 17 | 13 | 9 | 5 | 4 | 3.5 | 3 |
Sizes ss 4 – 48 basic setting
It is recommended to set the device on low pressure when applying the stones at temperatures of 180°C and higher.
Note:
All application values specified in the table are guidelines only. The optimization of these for the particular size of the stone, type of textile material and any setting device requires testing on a sample piece of the carrier material used.
Copyright Preciosa August 2008
created by Pentimenti