Twin Top Evo®
Production Flowchart
Technical Specifications

Twin Top® Evo is the advanced version of Amorim’s popular Twin Top® technical stopper, aimed at the popular premium segment, with high-grade natural cork discs at both ends and a micro-agglomerate cork body. It is ideal for wines with floral and fruity notes, recommended to be stored in the bottle for up to 36 months.

The individually moulded micro-agglomerate cork body assures higher homogeneity and greater physical and mechanical resistance.

Only the finest natural cork is used to produce this elegant technical stopper, which is subjected to rigorous quality control procedures, including Amorim’s patented ROSA Hi-Tech® treatment —thus delivering a high-performance stopper that guarantees an exceptional level of sensorial neutrality.


DimensionalLength (l)l ± 1,0 mm
Diameter (d)d ± 0,4 mm
Ovalisation≤ 0,3 mm
Physical MechanicalSpecific Weight250 - 330 Kg/m3
Moisture4% - 9%
Extraction Force20 - 40 daN
ChemicalPeroxide Content≤ 0,1 mg/cork
Dust Content(1)≤ 3 mg/cork
2,4,6 – Trichloroanisole (TCA)≤ 0,5 ng/L*
OTR (Oxygen Transfer Rate)12 months1,20 mg of O2
24 months1,29 mg of O2
36 months1,34 mg of O2
(1) This characteristic is only applicable to cork stoppers with surface treatment. Test methods are internal, having as a guiding line NP 2803 norm (Cork stoppers – Physical Assays) part 1 to 7.
* Average value and according to the method specified by the ISO20752 norm.

Standard Dimensions

  • 44 x 24 mm

Selection and Storage of Cork Stoppers

  • Amorim can calculate the required cork diameter by studying the internal profile of the bottleneck, the characteristics of the wine and the corking conditions.
  • Order your cork stoppers for immediate use. These cork stoppers should be used within six months of the date of manufacture if the storage conditions are respected.
  • Store the cork stoppers in their original packages, in a well-ventilated room with controlled temperature between 15oC and 25oC and 50% to 70% humidity.
  • Do not leave boxes and/or bags open with surplus cork stoppers.

Corking Conditions

  • Ensure any dust its removed before corking.
  • Ensure the cork is compressed smoothly, to a diameter no less than 15,5 mm.
  • Ensure insertion of the cork is a quick as possible.
  • For standard bottlenecks, the cork should be inserted to 1 mm below the top of the neck.
  • Minimise moisture on the inside of the bottleneck. Headspace should be at least 15 mm at 20oC.
  • Don’t leave the cork stoppers in the feeder as to avoid dust.
  • Always use stoppers with a surface treatment suitable for the type of beverage, bottling process and selected bottle.
  • A vacuum must be created in order to prevent internal pressures.

Equipment Maintenance

  • Maintain the corker jaws free of nicks and signs of wear.
  • Ensure proper alignment of plunger and location ring.
  • Ensure corking machine operates smoothly, especially during compression.
  • Clean all cork-handling surfaces regularly with chlorine-free products.
  • Ensure the equipment is suited to the cork and bottle used.

Storage and Transport of Wine

  • After bottling., the bottles should be kept in an upright position for at least 10 minutes.
  • Ideal bottle storage conditions are 12o-18oC at 50-70% humidity.
  • Keep the wine cellar free of insects.
  • Bottles should be transported in an upright position.
  • The product must not be stored in a location exposed to sunlight, heated environment and in direct contact with the ground.

Food Standards

All Amorim & Irmãos, S.A. products comply with existing regulations and legislation (European and FDA — Food and Drug Administration) for products in contact with food.