Polypropylene Bags
Our high clarity polypropylene products offer a multitude of advantages. The high clarity and gloss make for a beautiful retail presentation. Whatever your specific requirement, we have an excellent selection of options from which you can choose. Our packaging professionals are here during business hours to help you determine exactly which product will work best for you. We'll also answer your after-hours inquiries on the next business day.
Other advantages include a low moisture/vapor transmission rate (MVTR) that gives food products a longer shelf life. To gain the most from this advantage, plan on using a good bag sealer to ensure that your package is air tight.
What is a Polypropylene Bag? What Does Polypropylene Bag Mean?
Polypropylene (PP) is a raw material designed to provide many benefits not offered by conventional poly bags. This material provides added strength and clarity while reducing the moisture/vapor transmission rate (MVTR). The result is a clearer bag which when properly sealed can extend the life of many products which may suffer from exposure to ambient conditions.
Our polypropylene products are produced using one of two extrusion processes. Blown polypropylene is the most basic manufacturing process where the plastic film is produced by “blowing” air into a circular die. While all PP products are commonly referred to as more “crinkly” than polyethylene, blown polypropylene typically results in a finished product which is softer to the touch than those PP products produced using other processes.
Cast polypropylene is a bit more “stiff” than the blown version, and it offers slightly better clarity than its blown counterpart described above. The extrusion process is a linear die which produces a sheet instead of a tube.
Either one of the above processes can include coextruded (CoEx) film. Coextrusion simply means that two or more dies run concurrently during the extrusion process, and while it results in a single sheet, the molecular structure of the finished product is stronger than a monolayer produced in the same manner and of the same thickness. By having two or more layers inside, any weakness in one layer is normally overcome by the different alignment of molecules in the second layer.
