Polypropylene containers

The process of preparing meat in a modified atmosphere packaging:

• providing a container comprising a substrate and a multi-layer film, the substrate having a bottom wall and a continuous sidewall, the continuous sidewall encompassing the bottom wall and extending upwardly therefrom, the substrate comprising at least one particulate mineral filler and polypropylene, the multi-layer film being attached to the substrate, the multi-layer film comprising at least a first layer and a second layer, the first layer comprising a metallocene-catalyzed polyolefin, the second layer comprising polypropylene and being attached to the substrate, and wherein the substrate and the multi-layer film are made in the absence of ethylene vinyl alcohol copolymer (EVOH), ethylene vinyl acetate copolymer (EVA), and ethylene methyl acrylate copolymer (EMA);
• providing meat;
• placing the meat in the container;
• providing a modified atmosphere within the container;
• and
• sealing the container.

A process for making a container, comprising:

• providing virgin material comprising at least one particulate mineral filler and polypropylene;
• providing recycled material comprising polypropylene;
• extruding the virgin material and the recycled material to form a substrate;
• providing a multi-layer film comprising at least a first layer and a second layer, the first layer comprising a metallocene-catalyzed polyolefin, the second layer comprising polypropylene;
• attaching the second layer of the multi-layer film to the substrate;
• thermoforming the attached substrate and multi-layer film into a container, the container having a bottom wall and a continuous sidewall, the continuous sidewall encompassing the bottom wall and extending upwardly therefrom;
• and
• wherein the substrate and the multi-layer film are made in the absence of ethylene vinyl alcohol copolymer (EVOH), ethylene vinyl acetate copolymer (EVA), and ethylene methyl acrylate copolymer (EMA).

A process of making a container, comprising:

• providing a substrate comprising at least one particulate mineral filler and polypropylene;
• providing a multi-layer film comprising at least a first layer and a second layer, the first layer comprising a metallocene-catalyzed polyolefin, the second layer comprising polypropylene;
• attaching the second layer of the multi-layer film to the substrate;
• forming the attached substrate and multi-layer film into a container, the container having a bottom wall and a continuous sidewall, the continuous sidewall encompassing the bottom wall and extending upwardly therefrom;
• and
• wherein the substrate and the multi-layer film are made in the absence of ethylene vinyl alcohol copolymer (EVOH), ethylene vinyl acetate copolymer (EVA), and ethylene methyl acrylate copolymer (EMA).