These data are global average values for semi-manufactured stoppers. In our laboratory we examine samples of manufactured products and maintain the readings they yield in control forms. When material is shipped, a copy of the test results is sent with it. The company reserves the right to modify, with prior notice, the technical specifications presented in this catalog. This document is meant to be of an orientational nature concerning our product and manufacturing methods, and is complemented by the information supplied with the ordered product.
Composition: Disc (natural cork, average thickness 6 mm) + disc (natural cork, average thickness 6 mm) + agglomerated cork body (grain size from 3 to 6 mm / average density 70-75 kg/m3)
Measurements: Diameter: from 29 to 31 mm / Length: 48 mm (standard measurements; manufacture of other measurements to order)
Weight: Varies according to diameter between 9 and 9.5 g
Stopper density: Between 260 and 285 kg/m3
Moisture: Between 4 and 8 %
Rupture strength: Between 35 and 40 kg
Rupture angle: Between 45 and 55º
Vertical compression/recovery: Applying a mass of 28 kg for 30 seconds, we obtain a 99 % recovery in the same time interval
Horizontal compression/recovery: Applying a mass of 108 kg for 30 seconds, we obtain a 97 % recovery in the same time interval
Water absorption after 10 minutes boiling: between 7 and 12 %
Organoleptic analysis: free of foreign flavors and odors
Microbiological
analysis: Bacteria < 105 CFU/stopper, N.C.S. Standard / Filamentous
fungi and yeast < 106 CFU/stopper. N.C.S. Standard