4 important parameters of roll stock film
what is a roll stock film?
Roll stock film (also called rollstock) is a continuous flexible packaging film supplied on a roll. It’s used in automated packaging machines to form bags, pouches, or other flexible packages, typically by a process called form-fill-seal (FFS).
Key features of roll stock film :
What are the four important parameters of roll stock film?
The four main parameters of stock film generally refer to: material structure/thickness, photoelectric eye, film width, and film running direction. So why are these four parameters important for roll stock film? What is their specific significance?
Material Structure/Thickness
Material structure/thickness is the sole parameter for calculating the unit price of roll stock film products, and the significance of this technical parameter is self-evident and the most important.
Photoelectric Eye
The photoelectric eye is a “mark” printed in the corner of the roll stock film‘s printing layer. This parameter is an important basis for identifying the “film cutting point” on the machine. When the machine’s tracking component detects this point, the machine will prompt the FFS machine to complete the forming/filling/sealing process.
Film Width
Film width refers to the vertical width of a roll of roll stock film, which must be consistent with the vertical width of the FFS machine.
Film Running Direction
The running direction is a parameter that indicates the correct forward direction of the roll stock film when it runs on the FFS machine.
Importance of these four important parameters of roll stock film
Material structure/thickness: This parameter is provided by the customer, and the roll stock film manufacturer can calculate the product’s unit price based on this parameter.
Photoelectric eye, film width, and film running direction: These three parameters are provided by the customer’s machine supplier. After obtaining these three parameters, the roll stock film manufacturer arranges printing and typesetting, and then produces the printing cylinder.
