Express tea packaging to note

Express tea waterproof, moisture-proof to, but the most important thing is anti-taste, and smell the stuff of tea together, tea will absorb the odor, flavor change, and tea they will not be used. The main thing is not down to, it is best first to use plastic bags and then bottled, not only has anti-moisture pressure, and then came alive again in several layers of bubble paper, and now the delivery is not expensive, heavy on the weight is also not much money. There is the best tea to use to express the hard the soft outer packaging. Outside packaging is hard, can protect the tea, the general paper, cans, steel cans with aluminum foil or plastic film inside.



Technical requirements for packaging tea

Tea contains ascorbic acid, tannin tea, tea pigment, aromatic oil, protein, organic, fat, vitamins, pigments, pectin, enzymes and minerals and other ingredients. These components are susceptible to moisture, oxygen, temperature, light and smell of the occurrence of environmental deterioration. Therefore, the packaging of tea, it should weaken or prevent the above-mentioned factors, the specific requirements are as follows.

Oxidation

Packing too much can cause the oxygen content of certain components of tea oxidation deterioration, such as ascorbic acid is easily oxidized into oxygen, ascorbic acid, and further reaction with the amino acid combination of pigment occurs, so that deterioration of tea flavor. Therefore, the oxygen content in tea packaging must be effectively controlled at 1%. In packaging technology, packaging method can be used inflatable or vacuum packaging method to reduce the presence of oxygen. Vacuum packaging is the best tea in airtight into the soft film packaging bag, packaging bag to exclude air, causing a certain degree of vacuum, then sealed sealed packaging; inflatable packaging technology is in the discharge filled the air, while nitrogen and other inert gases, intended to protect the tea color, smell and taste has remained unchanged, maintaining its original quality.

Moistureproof

Tea is tea and biochemical changes in water medium, low moisture content will tea quality preservation. The water content of tea should not exceed 5% to 3% when long-term preservation is the best, or easy decomposition of ascorbic acid in tea, tea's color, aroma and taste will change, especially in the high temperature metamorphism speed up. Therefore, moisture resistant packaging can be a good choice, such as aluminum foil or aluminum vapor deposition film-based composite films for the packaging material moisture-proof packaging materials.

Gas barrier

The fragrance of tea can easily get lost, and vulnerable to outside influence odor, especially in complex film residual solvents, and electric iron treatment, sealing treatment will affect the decomposition smell out the flavor of tea to tea aroma are affected. Therefore, the packaging of tea must be avoided from the packaging to escape the smell and odor absorption from the outside world. Tea packaging materials must possess the necessary gas barrier properties.

Anti-high temperature

Change in temperature is an important factor in the quality of tea, the temperature difference of 10 ℃, the chemical reaction rate difference of 3 to 5 times. Tea will increase at a high temperature oxide containing material, resulting in more rapid decline in phenolic substances such as effective, quality deterioration accelerated. According to the implementation, tea storage temperature below 5 ℃ best. 10 ~ 15 ℃, the slow decline of tea color, color effect can be maintained is still good, when the temperature exceeds 25 ℃, the tea leaves will change color faster. Therefore, the tea is suitable for preservation at low temperatures.

Shading

Tea light can promote the chlorophyll and lipid oxidation of such substances, so tea E aldehyde, propionaldehyde and other smelly substances to increase and accelerate the aging of tea, so, in the packaging of tea, you must shade in order to prevent chlorophyll, lipids, etc. photocatalytic reaction occurs other components. In addition, the UV is also an important factor causing deterioration of tea. Shading can be used to solve such problems packaging