Packaging standards: Screw finishes for glass packaging
In March 2013 five standards were published for screw finishes for glass packaging. NEN-EN 16289 specifies the dimensions of the 28 mm finish for glass containers for pressurised or vacuum liquids designated MCA 7,5 RF.
NEN-EN 16291-1 specifies the dimensions of the screw finish for glass containers designated MCA 2 for returnable glass.
NEN-EN 16291-2 specifies the dimensions of the screw finish for glass containers designated MCA 2 for one way glass.
NEN-EN 16292 specifies the profiles of thread for all the screw neck finishes for metallic, plastic and metallo-plastic closures. The depressed threads could be used on continuous thread finishes to reduce the thread depth at and adjacent to the mould parting line. Depressed threads are only used on ≥ 28 mm Roll-On Pilferproof (ROPP) type finishes where the closure is formed on the neck finish.
NEN-EN 16293 specifies dimensions of a series of deep screw finishes for the closure of wines with a CO2 content below 1,2 grams per litre (World Packaging Standardisation Newsletter, April 2013).