PP BOPP (Biaxially oriented polypropylene film) is the biaxially oriented stretched film. With a density of 0.91 g / cm³, it is preferred as the packaging material since it ensures a high strength and quality optical characteristics.
Uses of PP BOPP
Since it guarantees superior qualities in the packaging, pp bopp is mainly used in the food packaging sector and also used in the textile sector and in the production of cigarettes, adhesive tape, cardboard lamination, and flower. Although the investment costs are high for this material, the production is Turkey reaches nearly half of the consumption.
PP BOPP Production Stages
Please find the production stages of PP BOPP Film Production below.
- Extrusion
- Molding
- Machine Direction Stretching
- Transverse Direction Stretching
- Film thickness measurement
- Corona
- Wrapping
- Cutting
The extrusion signifies the feeding of the raw material into the system. Molding signifies the placing of film layers equally into the molds. The machine direction stretching signifies the stretching of the sheet at a ratio of 4.5-5.5. The transverse direction stretching signifies the stretching of the sheet in the transverse direction so that the sheet fits into the process. Film thickness measurement is the measurement of the film after cooling. Corona is the surface modification technique to be applied on the film so that the film can adhere to the paint. The wrapping signifies the wrapping on the metal rolls, and this is the last stage of the production. In the cutting phase, the film is automatically barcoded at the end of the weighing process and the film gets ready for the shipment.