
Packaging may be defined as an economical means of providing presentation, protection, identification, containment, convenience, and compliance for a product during storage, transportation, display, and usage. Flexible packaging refers to a package or material made of flexible and easily yielding materials, that when filled or closed can be readily change into multiple shapes. Moreover, flexible packaging is composed of plastics, papers, and metals as the key components of flexible packaging products, which are made from foil, paper sheet, laminated paper, and plastic layers.