a) True
b) False
Answer: b
Explanation: The given statement is false. CPET (Crystalline PET) is stable till 230°C. Whereas, APET (Amorphous PET) softens over 63°C. The CPET process is based on conventional reheat thermoforming where an extruded PET sheet containing nucleating agents to speed up and maximize crystallization is reheated to around 170°C where it softens. After this, it is transferred in a hot mold and held so the crystallinity develops. Then it is transferred to a second mould for cooling.
Related Posts
__________ uses reflectance & absorbance principles for calculating the moisture content.
_________ method id based on dielectric principle.
______________ of moisture measurement is based on chemical reactions.
The oven drying methodology consists of heating by ________
Halogen and infrared drying are the examples of _________________
_____________ is the amount of moisture a material will absorb relative to ambient temperature and humidity conditions.
What is the critical point of water?
Join The Discussion