Packaging Closures and Sealing SystemsNigel Theobald, Belinda Winder The packaging closure is the primary interface between the product and the customer. Closures have undergone much evolution and development in recent years. The basic function of a closure is to allow easy access to a packaged product and to reclose the package, when the contents are not used fully in a single serve. However, closures are now expected to deliver a wide variety of additional functions, such as ensuring that the package has not been opened prior to the first opening by the consumer, facilitating the dispensing of the product (especially for food and pharmaceuticals) and supporting the brand equity value of the product. This volume considers the technologies relevant to packaging closures and sealing systems, structured by types of pack. It is directed at packaging technologists, those involved in the design and development of packaging and those who specify or purchase packaging. |
Contents
1 | 18 |
8 | 31 |
22 | 66 |
Closures for metal containers | 68 |
Closures for glass containers | 101 |
Composite containers | 118 |
23 | 147 |
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Common terms and phrases
achieve allow alufoil aluminium aluminium foil aperture applied aseptic barrier base body child resistance closure system coated cold-seal components consumer cork countersink crimp crown cork curl diaphragm diaphragm seal double seamed drink easy-open ends edge ensure Figure film fitment foil gable top cartons glass containers heat seal hydrogen peroxide induction heating Induction welding injection moulding inside laminate layer lever lid lid containers liner liquid machine mandrel manufacture membrane metal containers methods moulding open the packaging pack packaging closures packaging industry packaging materials paperboard performance containers plastic plastic bottles polyethylene polymer polypropylene pressure problems pump re-close recycling removed ring screw seal jaws shape shelf shown in Fig slip lid steel sterile sterilisation storage strength surface tamper evidence technologist temperature thermoplastic thread Three-piece tinplate top seal tube two-piece type of closure typical ultrasonic welding vacuum welding whilst