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SPARK® Stopper

The SPARK® stopper has acquired a priviliged status as a seal for the best Champagnes and Sparkling Wines. The result of intensive scientific and technological research, the Spark® stopper achieves the highest levels of physical, chemical and oenological performance. Its outstanding mechanical behavior and ease of bottling are fundamental advantages.

Tests Characteristics Specifications
Physical - Mechanical Length l ± 0,5 mm
  Diameter d ± 0,3 mm
  Ovalisation ≤ 0,3 mm
  Moisture 4% - 9%
  Average Weight X ± 1gr
  Specific Weight 230 - 290 Kg/m³
  Disc Thickness 1st ≥ 4,5mm / 2nd ≥ 5,5mm
  Torsion Moment ≥ 35 daN.cm
  Torsion Angle ≥ 35°
Physical - Chemical Dust Content ≤ 3mg/cork

Selection and Storage of Cork Stoppers

  • Amorim & Irmãos can calculate the required cork diameter from the design of the neck of your bottle, the characteristics of the wine and the corking conditions.
  • A wine with high CO2 may require a cork with a greater diameter than normal.
  • Order your corks for immediate or quick use. These stoppers should be used within 6 months of the date of manufacture.
  • Store in a well-ventilated room with controlled temperature between 15ºC and 25ºC and 50% to 70% humidity.

Corking Conditions

  • Ensure any dust is removed before corking.
  • Ensure the cork is compressed slowly, to a diameter no less than 15,5 mm.
  • Ensure insertion of the cork is as quick as possible.
  • For standard bottlenecks, the cork should be inserted to 1 mm below the top of the neck.
  • Minimize moisture on the inside of the bottleneck.
  • Headspace at 20ºC should be at least 15 mm.
  • Internal pressure after corking should not exceed 1.2 bar. Vacuum bottling is recommended.

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 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 15-25ºC at 50%-70% humidity.
  • Keep the wine cellar free of insects.
  • Bottles should be transported in an upright position.