The properties and importance of film materials for plastic packaging.

OPP, PA, PET, CPP and LLDPE films are commonly used in plastic packaging. The table below will tell us the characteristics of each type of membrane.
 

Tính năng		Printed film			Welding film
		OPP	PET	PA	CPP	LLDPE
Crystal-clear		***	****	***	***	**
Temper		***	****	**	**	*
Heat resistance		**	****	***	**	*
Cold resistance		***	***	****	*	**
Penetration resistance		***	**	****	***	****
Solder paste		*	*	*	***	****
Barrier properties	H2O	***	*	*	***	**
	O2	*	**	***	*	*
Economical		****	***	**	****	***