Misc Technical Articles
DEFECT: FLANGED-FINISHES (on 'twist-off' & 'screw-cap' bottles)
This Bulletin provides detailed information on the ‘critical’ defect referred to as ‘Flanged Finish’. The defect comprises a small horizontal protrusion of glass along the outer sealing-surface, most commonly affecting ‘narrow-neck’ beer and beverage bottles. The extent to which the small ‘fin’ or flange of glass protrudes outward varies from bottle-to-bottle, so to is the extent to which it travels around the circumference of the sealing-surface. Regardless of size, the flange has a propensity to fracture when closures are removed from the bottles by consumers.
Since the 1990’s, this unforgiving ‘critical’ defect has subtly risen through the ranks of glass-manufacturing defects to become one of the most prominent in terms of its involvement in major product recalls world-wide...... Learn More
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SODA BLOOM in Container Glassware
This Bulletin provides a range of information relating to the condition known as ‘Bloom’. What causes bloom to occur ; its potential effects on products ; potential conditions where bloom could adversely affect product ; and how to minimise the risks of bloom. There is no doubt that the visual effects of bloom have resulted in the dumping of large numbers of perfectly good containers. This document will provide information to assist food & beverage manufacturers assess the effects bloomed containers might have on their product..... Learn More
Regular Price: US$35.00
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SCREW-CAP WINE BOTTLES (Critical Dimensions on the 30 x 60 BVS Finish)
The popularity of the 30 x 60 BVS screw-cap finish on wine bottles has dramatically increased since the 1990’s, and now many mainstream red and white wines are filled into these ‘consumer-friendly’ bottles. Despite the many years the finish has been produced, capping issues still arise in many filling-plants. These issues can be attributed to both the ‘closure’ and the ‘bottle’ (or a combination of both). One common complaint raised by wine-fillers is the propensity of the whole closure (both ‘cap’ and ‘capsule’) to be removed from the bottles when opened by consumers. This issue has created much debate over the years, with wine-fillers, closure-manufacturers, and bottle-manufacturers all standing their ground when the ‘finger-of-blame’ is pointed.
This Bulletin focuses on the requirements of the glass-manufacturer, highlighting the levels of accuracy required for a range of major dimensions which...... Learn More