Tea bag packing material:
1 PE bags (plastic bags) Polyethylene bags Polyethylene bags Packaging materials are widely used, generally have low density, high density PE bag PE bag PE bag two, low density, moisture permeability and permeability, high density polyethylene bag Smaller. PE bag with economic, cheap, moisture advantages. Its shortcomings are poor light transmission, low air resistance. Can not be used alone for tea packaging. It is best to add a layer of photoresist with polyethylene bags outside the low permeability, such as synthetic paper cans, cans and other PE bag breathable, it is difficult to solve the problem of oxygen inside the bag, is not the ideal packaging materials.
2 Metal tin tin has a good extrusion resistance, good texture, early to PE bag packaging-based tea packaging, but because of high prices, corrosion and rust deformation, has been phased out. The smell of metal paint in the tank and the closure of the mouth is not enough, should not be used alone.
3 Synthetic paper synthetic paper cans can now use the most widely used packaging materials, the utility model has the economic advantages, light and beautiful, the only breathable moisture permeability is still high, should not be used alone, preferably with PE composite bags or aluminum foil bags
4 Aluminum foil aluminum foil composite bag bag beautiful, lightweight advantages, excellent moisture and oxygen performance, the price is only expensive PE bag, the use will be squeezed alone. Aluminum foil bags, vacuum or nitrogen or deoxidizer, with the box or synthetic paper cans, tea storage of water, gas, light, oxygen can be improved, low temperature storage is the best way to save tea.
