Many liquid beverages on the market now use self-supporting spout pouch. With its beautiful appearance and convenient and compact spout, it stands out among the packaging products on the market and has become the preferred packaging product of most enterprises and manufacturers.
l The effect of spout pouch material
This kind of packaging material is the same as the ordinary composite material, but it needs to use the material with the corresponding structure according to the different products to be installed. The aluminum foil spout packaging bag is made of aluminum foil composite film. After three or more layers of film are printed, compounded, cut and other processes to make packaging bags, because the aluminum foil material has excellent performance, it is opaque, silver-white, and has anti-gloss. Good barrier properties, heat sealing properties, light shielding properties, high/low temperature resistance, oil resistance, aroma retention, no peculiar smell, softness and other characteristics are deeply loved by consumers, so most manufacturers use aluminum foil on packaging, not only Practical and very classy.
So, for the self-supporting spout pouch that is so popular with consumers, there are many issues to be considered when choosing materials, how to choose. The following Dingli packaging gives you the answer selected from the three outer layers of the spout pouch packaging bag.
l What material is used for spout pouch?
The first is its outer layer: we saw the printing layer of the self-supporting spout pouch: in addition to the general OPP, the commonly used stand-up pouch printing materials on the market also include PET, PA and other high-strength, high-barrier materials, which can be selected according to the situation . If it is used for the packaging of dry fruit solid products, general materials such as BOPP and matte BOPP can be used. For liquid packaging, generally choose PET or PA material.
The second is its middle layer: when choosing the middle layer, materials with high strength and high barrier properties are generally selected: PET, PA, VMPET, aluminum foil, etc. are common. And RFID, the surface tension of the interlayer material is required to meet the composite requirements, and it must have a good affinity with the adhesive.
The last is its inner layer: the inner layer is the heat-sealing layer: generally, materials with strong heat-sealing performance and low temperature such as PE, CPE, and CPP are selected. The requirements for the composite surface tension are to meet the requirements of the composite surface tension, while the requirements for the surface tension of the hot cover should be lower than 34 mN/m, and there should be excellent antifouling performance and antistatic performance.
l Special material
If the spout pouch is required to be cooked, then the inner layer of the packaging bag needs to be made of a cooking material. If it can be used and eaten at a high temperature of 121 degrees Celsius, then PET/PA/AL/RCPP is the best choice, and PET is the outermost layer. The material used to print the pattern, the printing ink should also use the ink that can be cooked; PA is nylon, and nylon itself can withstand high temperature; AL is aluminum foil, and the insulation, light-proof and fresh-keeping properties of aluminum foil are excellent; RCPP It is the innermost heat-sealing film. Ordinary packaging bags can be heat-sealed using CPP material. Retort packaging bags need to use RCPP, that is, retort CPP. The films of each layer also need to be compounded to make the packaging bag. Of course, ordinary aluminum foil packaging bags can use ordinary aluminum foil glue, and cooking bags need to use cooking aluminum foil glue. Step by step, you can create a perfect packaging.
Post time: Sep-24-2022