Some forms of tea packaging
Tea is a major specialty of China, but also a popular consumer goods. A good tea in the packaging must be on the grade, so there are a variety of packaging. Here are some materials for tea packaging
1、 PE bag (plastic bag)
Polyethylene bags, namely PE bags, are widely used packaging materials. Generally, there are two kinds of low-density PE bags and high-density PE bags. Low-density PE bags have greater moisture permeability and air permeability, while high-density PE bags are smaller.
The advantages of PE bag are economy, low price and good moisture resistance, but its disadvantages are poor light transmission and gas resistance, so it can not be used in tea bag packaging individually. It is better to add a layer of outer packaging with polyethylene bags, such as synthetic paper cans and iron cans, which can block light and have low air permeability. PE bags have high air permeability and are difficult to solve the oxygen problem in the bags, so they are not ideal packaging materials.
2、 Metal can
The advantages of metal can are extrusion resistance and good texture. In the early stage, it was mainly used for tea bag outer packaging with PE bag inner packaging. However, due to its high price, easy corrosion, rust and deformation, it has been gradually eliminated. The paint smell inside the metal can and the sealing of the cover are not enough, so it is not suitable to be used alone.
3、 Synthetic paper can
Synthetic paper can is the most widely used packaging material at present. It has the advantages of economy, light weight and beautiful appearance. It has high air permeability and moisture permeability. It is not suitable to be used alone. It is better to use it with PE bag or aluminum foil laminated bag for inner packaging. This article is transferred from: West Lake Longjing information platform
4、 Aluminum foil laminated bag
The aluminum foil laminated bag is beautiful and elegant. Its advantages are light proof, moisture proof and oxygen resistance. However, the price is more expensive than PE bag. If used alone, there will be extrusion problems. If the aluminum foil laminated bags can be treated with vacuum or nitrogen or deoxidizer, combined with packaging cartons or synthetic paper cans, the moisture proof, gas blocking, light proof and oxygen free storage of tea can be solved perfectly. The best preservation method of tea is low temperature storage.
5、 Glass cans, magnetic cans, wooden boxes, cartons
Although the glass tank has excellent air and moisture resistance, it is transparent, fragile, heavy and expensive. Magnetic pot or ceramic pot can avoid light, but similar to glass can, it is fragile and heavy. If wooden box is not handled properly, tea will easily absorb peculiar smell and absorb moisture. Paper box or paper bag is easy to break. These materials are not ideal tea packaging materials.
6、 Nitrogen filled or vacuum bag packaging
Because the packaging bag will shrink in vacuum packaging, in order to avoid re extrusion collision and beauty, it is appropriate to add outer packaging protection. Nitrogen filled packaging will expand the bag, and should not be squeezed to avoid bursting. Both of them need to be packed, and the preservation has good effect, but the investment is more expensive. Food paper plastic composite bag.
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