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With an eye on refills, Stoelzle launches screw-pump flacon

Pascale Ruchon
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With an eye on refills, Stoelzle launches screw-pump flacon

In response to growing demand for screw-pump bottles in perfumery catering to refillable formats, glassmaker Stoelzle has launched a new stock screw-pump bottle. The supplier predicts that screw-ring formats will make up 50% of its fragrance business in two years’ time, compared to just 20% today.

Glassmaker Stoelzle Masnières Parfumerie is launching a standard flacon with a new-generation screw ring. Intended for use with a screw-on, removeable spray pump, the system can be used to refill an empty bottle or to separate pump and bottle before recycling — advantages that traditional, crimped pumps cannot offer. The new ring is smaller than traditional models and resembles a crimped ring, allowing perfume brands to easily switch from one system to another, while using the same pump cover.

Stoelzle’s flacon is the fruit of a collaboration with Cetie, the Centre International Technique de l’Embouteillage, or International Technical Center of Bottling and Packaging, a French association that works with the glass and PET container industries to create technical specifications with the aim of developing international standards. To this end, a working group comprising leading perfumery glass bottle specialists and pump suppliers Silgan and Aptar, focused on standardizing screw rings to better respond to market needs. 

What's behind the innovation?

“Our first objective was to make the ring as short as possible, which pushed the limits of glassmaking,” explains Franck Legrand, Director of Development and Innovation for Stoelzle’s beauty operations, and one of the project’s main proponents. “We can always further reduce the height, but only on a case-by-case basis and for specific creations that will entail additional development costs.” Another challenge was how to obtain both a smaller external diameter and an internal diameter large enough to receive the pump, given that the threads take up space. In addition, rice-shaped components were added to the glass threads in order to slow unscrewing and prevent accidental leaks.

The design was applied to a 15mm diameter ring, the most common size in perfumery, but it will also be available in other popular formats as the majority of fragrance launches now feature screw-pump systems. “Screw rings currently represent 20% of our fragrance business, but this is expected to increase to 50% within the next two years,” says Legrand. “While some markets still prefer crimped pumps, as they guarantee better protection, we believe that in the long term, about 80% of the market will use the screw-pump system. Our clients are beginning to change their design standards, but factories need time to adapt packaging and verify if the trend is here to stay or not — hence the importance of interchangeability,” Legrand concludes.

 

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