The importance of correct settings for the heatsetting process
May 8th, 2007 | In Uncategorized, sales and distribution | 1 commentAuthor: Lisa Thaha
For the heatsetting process there are three significant factors, which influence the quality of the heatset yarn.
The first factor is the chamber dwell time, that is the time, the yarn remains in the heatsetting chamber.
The second factor is the chamber temperature. This is the temperature with which the yarn is processed and depends on the yarn type to be heatset.
Each yarn has requires different temperatures, e.g.
Nylon 6 can be heatset at a temperature between 184 - 202 degrees Celsius, whereas
Nylon 6.6 requires a heatsetting temperature between 200 - 212 degrees Celsius.
The third factor is the dewpoint temperature, which is the relation of the atmospheric pressure to the specific humidity in the chamber during the heatsetting process.
Here also, the temperature to be set depends on the specific yarn.
For example, for Nylon you will need a dewpoint temperature between 88 - 96 degrees Celsius, but Polyester requires a dewpoint temperature of 90 degrees Celsius.
Any wrong setting will influence the quality of the heatset yarn. For example, the heatsetting temperature was too low - the yarn will not be heatset permanently and will lose the twist in the finshed carpet. If the heatsetting temperature is set too high, the yarn will turn yellow, or even worse - burn or melt.
In order to determine the best settings for the yarn to be heatset, trial runs are necessary.
We have in Toeging a testline and our customers are welcome to send their yarn for trials to profit from our experience and to find the best setting for their yarn to achieve the well-known high quality of PHS heatset yarn.
