Molding Process
6 visualizaciones
LLDPE film heat sealing problem
Fenómeno del problema
Heat seal initiation temperature is high or hot tack strength is low.
Análisis de la causa
LLDPE has a higher melting point than LDPE, and the heat seal window is different; hot tack is related to the grade (comonomer type).
Solución
①Adjust the heat seal temperature according to the grade; ②select a heat-sealable grade (such as octene copolymer); ③optimize heat seal pressure and time; ④clean the contaminated film surface first.
Conclusión clave
For heat sealing, first check the grade's melting point and comonomer.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!