Standard sealing

Standard for Crown Cap Sealing


Sealing a crown cap is not just about pressing the cap onto the bottle. There are two common problems encountered with crown cap sealing:


1. **Difficulty in Opening Crown Caps**:
   Often, we hear that opening crown caps can be difficult because sometimes the sealing does not meet the designed standard. This issue will not occur if the crown caps are sealed according to the standard. The standard for sealing crown caps is that the crimping should measure 28.7 (+/-0.3) millimeters after sealing. This specification ensures that the crown caps are neither too difficult to open nor so loose that the cap comes off easily.


2. **Reduction in Fizziness**:
   Sometimes, sealed bottles lose their fizziness. This issue arises from improper sealing of the crown cap, where the liner does not tightly fit the bottle neck, causing leaks. This is especially problematic for carbonated drinks like soda. If the liner is not pressed tightly enough, the liquid might not leak out, but the gas pressure will, reducing the fizziness. Proper pressing of the liner helps maintain the quality of the drink in the bottle. Therefore, a good crown cap sealer should press the liner tightly enough.

### Additional Issues

**Fermentation in Bottles**:
If there is ongoing fermentation in the bottle, laying the bottle horizontally may cause liquid to leak, or opening the bottle might release pressure forcefully. This is due to increased pressure pushing the liquid out of the bottle. If you encounter this problem, check the production process or sterilization completeness. Sugary drinks are more likely to ferment in bottles, such as traditional rice wines or fruit juices. Additionally, check if the crown cap sealer still meets the standard.

**Maintaining Quality**:
Reducing these problems can be done by using standard crown caps and proper sealing techniques. Pressing the liner tightly to the bottle neck is the first step. Ensuring the liner is tightly pressed helps maintain the beverage's quality in the bottle. The crimping locks the liner in place, making it easy to open by prying the crimp.

Written by K. Panit. If shared, please mention the source. Thank you in advance.

This article was automatically translated.

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