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What is BOPP packaging film and its product features and uses?
2023-05-30
BOPP packaging film is a kind of BOPP film classification. The production of bopp is to first make the melt of high molecular polypropylene into a sheet or thick film through a narrow and long machine head, and then in a special stretching machine, at a certain temperature and At a set speed, it is stretched in two vertical directions (longitudinal and transverse) simultaneously or step by step, and is made by proper cooling or heat treatment or special processing (such as corona, coating, etc.) film.
Commonly used BOPP films include: ordinary biaxially oriented polypropylene film, heat-sealed biaxially oriented polypropylene film, cigarette packaging film, biaxially oriented polypropylene pearlescent film, biaxially oriented polypropylene metallized film, matting film, etc.
BOPP film features:
The surface energy of BOPP film is low, and corona treatment is required before gluing or printing. After corona treatment, BOPP film has good printing adaptability, and can be overprinted to obtain exquisite appearance effect, so it is often used as the surface layer material of composite film.
BOPP film can be produced by tubular film method or flat film method. The properties of BOPP films obtained by different processing methods are also different. The BOPP film produced by the flat film method has a higher stretch ratio (up to 8-10), so the strength is higher than that of the tubular film method, and the uniformity of the film thickness is also better.
BOPP film application
Commonly used BOPP films include: ordinary biaxially oriented polypropylene film, heat-sealed biaxially oriented polypropylene film, cigarette packaging film, biaxially oriented polypropylene pearlescent film, biaxially oriented polypropylene metallized film, matting film, etc.
BOPP film features:
The surface energy of BOPP film is low, and corona treatment is required before gluing or printing. After corona treatment, BOPP film has good printing adaptability, and can be overprinted to obtain exquisite appearance effect, so it is often used as the surface layer material of composite film.
BOPP film can be produced by tubular film method or flat film method. The properties of BOPP films obtained by different processing methods are also different. The BOPP film produced by the flat film method has a higher stretch ratio (up to 8-10), so the strength is higher than that of the tubular film method, and the uniformity of the film thickness is also better.
BOPP film application
BOPP can be compounded with many different materials to meet special application needs. For example, BOPP can be combined with LDPE (CPP), PE, PT, PO, PVA, etc. to obtain high gas barrier, moisture barrier, transparency, high and low temperature resistance, cooking resistance and oil resistance. Different composite films can be applied to oily food, Delicate food, dry food, dipped food, all kinds of cooked food, monosodium glutamate, pancakes, rice cakes and other packaging.
