The practical application of beer cap (crown cap)
It is far more than just "putting a lid on", its applications span across multiple dimensions such as industrial manufacturing, business strategy, flavor science, and consumer experience.
Here is a comprehensive analysis of its core applications:
Core functional application: sealing and preservation
This is the fundamental purpose of the crown cover's existence.
1. High pressure seal:
Application scenario: Encapsulate carbonated beverages such as beer, sparkling wine, soda, etc. containing live yeast (secondary fermentation in bottles) or artificially injected carbon dioxide.
Function: Its 21 tooth mechanical structure and the elasticity of the inner pad can reliably withstand and lock the pressure of 3-6 atmospheres inside the bottle, which is the key to maintaining the "bubble sensation" or "taste killing" of the beverage.
2. Barrier protection:
Oxygen barrier: prevents oxygen infiltration, which is the main reason for beer aging and the production of "cardboard flavor". Oxygen absorbing cover (including oxygen absorbing layer) is a high-level application of this function, widely used in high-end lager, IPA and other beer that are sensitive to oxidation.
Light blocking: Brown or green beer bottles themselves can block most of the ultraviolet rays, but the metal properties of the crown lid provide additional full spectrum shading protection, preventing beer from producing "sunlight odor" due to light exposure.
Pollution prevention: Form a physical barrier to prevent microorganisms and pollutants from entering.
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