01 exhaust
These holes can be used as a venting cap. In the process of mechanical cap, if there is no small hole exhaust, there will be air forming air cushion between the bottle cap and the bottle mouth, which makes the wine cap fall slowly, affecting the production speed of the mechanical assembly line, and in the cap (tin foil cap) When heated (thermoplastic cap), residual air is trapped in the wine cap, affecting the appearance of the cap.
02 ventilation
These holes are also venting holes for wine, which can be easily carried out in old age. A small amount of oxygen is good for wine, and these vents are designed to help the wine have access to the air when it is completely sealed. This slow oxidation not only allows the wine to develop a more complex flavor, but also extends its life.
03 moisturizing
We all know that in addition to paying attention to light, temperature, and placement, wine preservation requires moisture. This is because the cork is contractile. If the humidity is too low, the cork will become very dry and the airtightness will be poor, which may cause a large amount of air to enter the bottle to accelerate the oxidation of the wine, affecting the quality of the wine. The small hole in the bottle seal can maintain a certain humidity of the upper part of the cork and maintain its sealing performance.
Not all wine bottles have small holes in the seal
The wine is sealed with a screw cap, and there is no small hole in the bottle seal. Some wine merchants use a screw cap to preserve the floral and fruit aroma in the wine. The air entering the bottle is particularly low or almost absent, which can inhibit the oxidation process of the wine (the fruit and fruit will gradually disappear after ageing in the bottle). The screw cap has no ventilation function like a cork, so there is no need to punch holes.
However, even wines that are closed with cork stoppers do not have small holes. The presence of small holes in the bottle seal is more dependent on the will of the wine producer, because there are small holes in the middle and low-end wines, as well as high-end wines. Of course, there will be no small holes. . We don't have to worry too much, just remember that the presence of these holes is not bad for wine.
