Several processing technologies for oriented film are used:
- Cast film extrusion followed by stretching (orientation) in one or more directions – either lengthwise (uniaxially) or in both directions (biaxially). Mostly used for BOPET (Biaxially Oriented Polyethylene Terephthalate), BOPA (Biaxially Oriented Polyamide), BOPP (Biaxially Oriented Polypropylene) and BOPE (Biaxially Oriented Polyethylene).
- Blown film extrusion with orientation in machine and transverse direction. Mostly used for BOPA (Biaxially Oriented Polyamide) and BOPP (Biaxially Oriented Polypropylene).
- Multi bubble film extrusion with orientation in machine and transverse direction. Mostly used for sausage casings and shrink film.
- Monodirectional orientation (MDO) of a cast or blown film.
Additives used for oriented film extrusion
The Compound Company offers multiple Yparex products for oriented multilayer film extrusion.
Applications of oriented film extrusion
Oriented film extrusion is commonly used for packaging materials.
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