Normally, the packaging film is made by several different grades of polyethylene resin mixed extrusion, with the characteristics like puncture resistance, super-strong performance, these characteristics makes it widely applicable to pack confectioneries.
So for flow packing machines, which packing films are workable?
1.OPP
OPP packaging film is widely applied to flow packaging machines, the material is polypropylene, bi-directional polypropylene, characterized by easy burning, molten dripping, yellow on blue, less smoke after leaving the heating, and continuing to burn.
Opp packaging film is odorless, colorless, and tasteless, also non-toxic, and it has good impact strength, tensile strength, strong toughness, rigidity, and good transparency.
It is a good packaging film material, suitable for various food, beverage products packaging with decent packaging effect, mainly to protect the product, high efficiency.
2.CPP
CPP packaging film is cast polypropylene, also known as unoriented polypropylene film, which can be divided into General CPP (GCPP) film, Metalize CPP (MCPP) film, and Retort CPP (RCPP) film according to its application.
CPP packaging films have great heat resistance because the softening point of PP is nearly 140℃, so CPP film can be used in hot sealing, hot filling, and other packaging fields.
Together with excellent resistance to acid, alkali, and grease, it makes it the material of choice in fields such as bakery product packaging.
It will keep food contact safe and excellent presentation properties do not affect the flavor of the food inside, and different grades of resins can be selected to obtain the desired characteristics.
3.Composite packaging film
Composite packaging film is a packaging film formed by multi-layer film through printing and lamination processes.
According to the material structure, it is divided into two-layer, three-layer, four-layer, five-layer, and so on. It can be applied to food, hardware, medical, and can be used in different environments through lamination.
So the above information is the summary for choosing flow packaging films, hopefully, it is helpful, this is Hans, The super-intelligence candy bar/chocolate flow packing machine specialist, see you in the next article.
