Explain Briefly About The Use Of Polyamide Resins For Packaging?

Multilayer structures made from polyamide in combination with polyolefin and papers, foils and kindred products, meet the relevant requirements for food packaging in an ideal way. In addition to the film characteristic, the processing efficiency, recyclability (edges and product), down gauging and price are in consideration for selected resin. Common resins utilized in film applications are: a small family of resins such as Ethylene vinyl alcohol, polyvinylidene chloride, polyamide, and PET provide the flavor and gas barrier properties required.
Very important characteristic for polyamide resin family is down gauging through co-extrusion cast process or by orientation-mono and bi-orientation-of the polyamide film itself or with polyamide / polyamide /Ethylene vinyl alcohol/ polyamide structures. As flexible packaging is expanding more due to source reduction, polyamide film co extruded and extrusion coated-laminated structures start to be more important than in previous period of development. Because of this balance of properties that polyamide is in use more than any other resin for the production of film for the food and medical packaging market.
Polyamide family of resins combines the ease of processing (only with proper extrusion equipment and knowledge) and mechanical strength to yield an efficient product. Also possibilities to combine polyamide family of resins with other material are technologies of sophistication.