Developments in New Polymeric Barrier Packaging Materials

The success of any food-packaging technology as a means of extending the shelf life of food is dependent on the characteristics of the package materials surrounding a product. Developments in polymer chemistry have resulted in production of low-gas-permeability package films, such as polyvinylidene chloride (PVDC) and ethylene vinyl alcohol (EVOH), and high-gas-permeability materials such as styrene block copolymers. PVDC and EVOH films have excellent water vapor-oxygen-, and carbon dioxide-barrier characteristics and can be laminated to structural and/or water vapor-barrier polymers to impart the desired strength, heat sealability, and permeability characteristics for quality retention of packaged food products. In addi tion, developments in high-speed, continuous, vertical, horizontal, and thermoforming packaging equipment compatible with the machinability characteristics of these films have also promoted the growth of new packaging technologies.

Sleeping Sanctuary

Sleeping Sanctuary

Salvation For The Sleep Deprived The Ultimate Guide To Sleeping, Napping, Resting And  Restoring Your Energy. Of the many things that we do just instinctively and do not give much  of a thought to, sleep is probably the most prominent one. Most of us sleep only because we have to. We sleep because we cannot stay awake all 24 hours in the day.

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