低溫熱塑膜是具有記憶性能的材料，可以重複塑形使用。當塑形、固定不佳時，可將拉伸變形的材料二次放入65℃的熱水中軟化。在軟化過程中，由於熱的緣故，激活、釋放了被凍結的內在應力，使材料回縮，回復原狀。
 
Thermoplastic fixation masks have memorial feature. They can be used and modeled repeatedly. As needs to be remodeled and refixed, the stretched and transformed material can be put into hot water of 65/149℉ to be softened again. In the process of softening, the heat activates and releases the frozen internal stress, so the material retracts and returns to its original shape. This reuse process is the most outstanding property of this material.