The United States is in a leading position in the development of flexible packaging printing technology in the world, especially the packaging structure, printing methods and packaging methods of various food packaging bags in the country .
Soft drink packaging
As environmental protection requirements become more stringent, flexible packaging is also becoming a trend, and new types of packaging with a variety of different structures are successfully meeting the demanding freshness requirements of beverages.
The printing method is gravure or flexo. The packaging form is self-supporting bag .
Packaging materials, structure and characteristics:
PET / ALL / PE is suitable for vertical packaging bags of various juices and other beverages. It has very good mechanical properties and is suitable for heat sealing. PET / EVOH / PE is suitable for vertical packaging bags of various juices and other beverages. It has good barrier properties. Good transparency; PER / ALU / PET / PE , better heat resistance than "PER / ALU / PE" ; PER / ALU / PET / PE , suitable for vertical packaging of various non-concentrated beverages, tea and coffee Bag, better mechanical properties than "ET / ALU / PE" (ALU is aluminum foil ) .
Coffee packaging
Coffee is a traditional product in Europe, and its packaging has a long history of development. Nowadays, the packaging of various composite structures can meet any storage and display requirements of coffee.
The printing method is gravure printing, up to 10 colors; the packaging form is three-side sealing or four-side sealing, which is used for granular or powder vacuum or modified atmosphere packaging.
Packaging materials, structure and characteristics:
PER / ALU / PE , suitable for vacuum or modified atmosphere packaging bags; OPP / ALU / PE : suitable for vacuum or modified atmosphere packaging bags, very good mechanical resistance, good processing performance; PET / M / PE , suitable for modified atmosphere or vacuum packaging bag is not very high barrier aluminum foil; paper PE / ALU / PE, single bag suitable for modified atmosphere packaging or vacuum, convenience food; OPA / ALU / PE, suitable for modified atmosphere packaging or vacuum bags, High barrier property and excellent mechanical resistance.
Meat products packaging
A variety of composite materials are used in the packaging of meat products to meet various storage and packaging conditions. In addition to the traditional composite materials suitable for high temperature and sterilization, new transparent and high-barrier structures are also being introduced. These structures are suitable for modified atmosphere and vacuum packaging.
The printing method is gravure printing or flexo printing; the packaging form is preformed bag ( including valve bag for ham packaging, three-sided flat seal bag for cooked meat products ) , thermoformed roll material ( used as the bottom and cover of the tray ) .
Packaging materials, structure and characteristics:
OPA / ALU / PE , suitable for pasteurization, used in ham packaging bags ; PER / ALU / PET / PE , suitable for cooked ham sterilization bags; PER / ALU / PET / PP , suitable for semi-finished products, cooked ham bags, can be used High temperature sterilization; PER / ALU / PE , suitable for pallet cover, etc .; PET / EVOH / PE , high barrier, suitable for vacuum packaging of ham slices; PET / EVOH / PE , high barrier, suitable for vacuum packaging of ham; PA / PE , which can be thermoformed, has very good adhesion to the product. Suitable for ham packaging lid ; PET / EVOH / PE , thermoformable, good stiffness, high barrier, suitable for modified atmosphere packaging.
Frozen food packaging
It is most commonly used to preserve perishable food, and its packaging requirements also ensure high freshness and product display effects.
The printing method is gravure printing, up to 10 colors; the packaging form is three-side sealed bag.
Packaging materials, structure and characteristics:
PET / PE , suitable for high-speed packaging of fruits; PET / M / PE , aluminized composite film, good visual effect, suitable for packaging of vegetables, jams and fresh meat; PET / PE / M , performance with the first two composite films Similar, but better printing effect; OPP / PE / M , aluminized composite film , less affected by environment, suitable for vegetable packaging.
Fresh jam packaging
Several kinds of modified atmosphere packaging are commonly used in the packaging of such products, in which the composite structure is suitable for heat treatment.
The printing method is gravure printing or flexo printing; the packaging form is thermoforming discs and bags.
Packaging material, structure and characteristics of packaging machine:
PET / PP , good mechanical properties, pasteurizable, suitable for modified atmosphere packaging and pasteurized tray sealing cap, easy to tear; PET / EVOH / PE , high gas barrier, used for modified atmosphere packaging tray sealing Cover PET / EVOH / PE , the same as the previous one, but suitable for heat treatment; OPA / PE , very good mechanical properties, suitable for modified atmosphere packaging; OPA / PP , high transparency, suitable for heat treatment, suitable for modified atmosphere packaging And pasteurize.
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