Bericap has developed a liner-less one-piece closure fitted with a specific seal (Valvelock Trumpet).
It was tested successfully on new polyethylene terephthalate (PET) necks and the 5-gallon containers have proven to be leaktight.
Both new closure types are available with a center shutter and also with a low-cost pierced center membrane.
The company has also developed an ultra-light neck/closure solution (Valvelock SuperShort) for one-way PET containers in cooperation with SIPA.
Weight savings in excess of 18% on the neck and 40% on the closure are achievable.