“Thermoforming methods such as vacuum forming or plug-assist vacuum forming are often useful in packaging products. In general terms, thermoforming involves heating of a thermoplastic film or laminate and forming the film or laminate into a desired shape for holding a product to be inserted. This sheet of a film or laminate is usually referred to as a forming web. Various systems and devices are used in a thermoforming process, often accompanied by vacuum-assist and plug-assist components to provide the proper forming of the forming web into a predetermined shape. Thermoforming systems are well known in the art. Thermoformed packages are often useful in packaging meat or poultry products.” (Kendig and Sobataka, US Patent 7,569,276, 8/4/2009) 

Packaging 
Processing    
Thermoforming   
Thermoforming Applications    
Thermoforming Containers   

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