Composition of multilayer composite self standing bag
The main components of multi-layer composite self-supporting bags are polyethylene (PE), nylon (NY), aluminum (AL) and cast polypropylene film (CPP film). The use of PE raw materials can make the printing effect good and do not fade. NY materials can reduce the oxygen permeability of the packaging to the minimum. Al aluminum metal is mainly used to block the light and heat effects. The innermost one is CPP film, cooking grade CPP (return) Compared with LLDPE, LDPE, HDPE, pet, PVG and other films, CPP has lower cost and higher yield. Higher stiffness than PE film. Water vapor and odor barrier is good. It is multifunctional and can be used as composite substrate. It can be metallized. As the packaging and outer packaging of food and commodity, the self-supporting bag has excellent demonstration, which can make the product visible under the packaging. These different materials are used in a scientific proportion to achieve the purpose of safe packaging and standing requirements.
Packaging bag knowledge: introduction of tea packaging bag
Generally, the composite materials that can be used as tea packaging bags are: PET / PE, BOPP / CPP, NY / PE, PET / VMPET / PE, OPP / Al / PE. These composite materials have excellent gas resistance, moisture resistance, aroma retention, odor prevention and other functions, and these are very important for the protection of tea quality. As we all know, tea is a kind of dry product, it is easy to absorb moisture and moisture and produce qualitative change, it has strong adsorption of moisture and odor, and the aroma is easy to volatilize. Therefore, the tea packaging bag made of the above packaging materials can well protect the quality of tea.
Judging from the appearance of the tea bag, the bag shape is a side organ middle sealing bag, and the self-supporting bag has a tear opening on the sealing surface, so it can be used by consumers.
In addition, the color of this tea bag is dark green, which is used to package jasmine tea. The pronunciation of "Mo Lv" and "Mo Li" in Chinese is very similar. Of course, it is not the reason why we choose the word "Mo Li" in the design of tea bags. The dark green is a mixture of black and green, which combines the steadiness of black, the freshness and nature of green, giving people a sense of harmony and peace. Tea culture has a long history in China, including Chinese cultural connotation and etiquette, self-cultivation, edifying sentiment and so on, all of which seek a harmony and peace! Moreover, jasmine tea is a kind of flower tea, which has the characteristics of strong fragrance and deep color of tea soup, which is consistent with the dark green appearance of the tea bag: the tea soup is fragrant, the tea package is heavy and fresh! www.dgbpk.com/
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