When you release the liquid carbon dioxide from the tank, the expansion of the liquid and the high-speed evaporation of carbon dioxide gas cools the remainder of the liquid down to the freezing point, where it turns directly into a solid.
Quick Answer. Cigars stay fresh without a humidor for up to a month when kept in their original wrapper. Cigars kept in a humidor can last for years in a properly controlled environment. A humidor keeps cigars from drying out and the oils from evaporating. Keep Learning.
A form of cigar packaging in wooden boxes (typically made of Spanish cedar) with sliding tops, designed to hold 25 or 50 cigars, often wrapped with a ribbon. This type of packaging is also known as a slide-lid box. These boxes are often made of Spanish cedar.