Why do POF shrink films need to be punched?
Customers who use POF shrinkable film for the first time feel confused when they ask if they should have a hole punched in the film, and don't know whether to do it or not. Now I'm going to talk a little bit about perforating the POF shrinkable film.
In fact, this so-called hole is not as big as we imagine, which is just like a tiny point stuck in a needle. If the hole is too large, it will not only make the dust and moisture in the air enter the inside of the packaged product, but also affect the shrinkage effect of the POF shrinkable film. And leaving such a small hole can prevent the internal air after packaging due to the phenomenon of flatulence. Therefore, the user in the future purchase of POF shrinkable film can let the manufacturer make one or two small holes in your film.
