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Agglomerated stoppers

This stopper is produced from cork granulate of size 3-8mm , formed into a cylinder by extrusion under high pressure and heat, then cut and brushed into the final form. It always has both ends chamfered to protect against breakage during bottling. Produced in any required diameter and length, but wine producers mainly specify diameters of 21, 22 and 23mm and lengths of 33, 35, 38, 42 and 44mm, depending on the bottle and bottling plant type. Usually produced fully washed.

Recommended for wine storage up to 1-2 years, in ideal conditions


PRODUCTION
Process Extrusion at 120°C
Adhesives Polyurethane Approved by FDA
JATOSY® Granules on Autoclave System
DIMENSIONAL TESTS
Length Nom. ± 0,50 mm NP 4351 / NP 2803-1
Diameter Nom. ± 0,40 mm NP 4351 / NP 2803-1
Ovalisation < 0,40 mm NP 4351 / NP 2803-1
SPECIFIC TESTS
Moisture 6,0% ± 2 NP 4351 / NP 2803-2
Specific Weight 280 Kg/m³ ± 40 NP 4351 / NP 2803-1
Resistance Boiling Water No Disintegration NP 4351 / NP 2803-7
Recovery / Elasticity > 96 % Internal Method
CHEMICAL TESTS
Residual Oxidants < 0,2 mg/cork International/Internal Method
Surface Treatment 12,5 mg/cork ± 2,5 Internal Method
MECHANICAL TESTS
Extraction Force 30 daN ± 10 NP 4351 / NP 2803-4
Sealing Test < 1,5 bar Internal Method
Torsion: Angle > 35° NP 4351 / NP 2803-6
Torsion: Moment > 20 daN.cm NP 4351 / NP 2803-6
Compression Force 70 daN ± 10 NP 4351 / NP 2803-6
MIKROBIOLOGICAL TESTS
Microbiology < 4 UFC/cork NP 3721

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