Material Drying
11 visualizaciones
PET Preform Acetaldehyde (AA) Odor
Fenómeno del problema
After blowing, the bottle has an odor, affecting the taste of drinking water.
Análisis de la causa
Acetaldehyde is produced by thermal degradation and hydrolysis during PET melt processing; excessive material temperature, too long residence, and high water content all increase AA generation.
Solución
①Control material temperature and residence time; ②fully dry to reduce hydrolysis; ③select a low-AA generation process; ④conduct AA content testing for beverage bottles.
Conclusión clave
Odor = degradation products; dual control of temperature and water.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!