What’s more characteristics of spout pouches?
Sanitary safety: No chemical ingredients, non-toxic and spout bag’s material has no effects on the products which it contains.
High barrier protection: High barrier spout pouch packaging protects your products away from environmental factors such as oxygen, ultraviolet rays and moisture. This is very important feature because liquid products are more likely to deteriorate when they contact oxygen.
High-temperature sterilization characteristics: The material of spout pouch can withstand high temperature sterilization processes which it is a characteristic that many hard packaging is not easily to achieve. So that the contents do not need to require preservatives to achieve long-term preservation needs.
Powerful sealing/shutdown: The sealing and closing of the mouth bag can prevent leakage. This feature makes the mouth pockets the best choice for long-term liquid product packaging.
Anti-impact: There is a certain impact that is not easy to pierce or tears (the prerequisite for the protection of the outer packaging) and the protection is necessary during transportation.
What’s the high barrier material structure of spout pouches?
The material spout pouch can not be judged by appearance because it can be composed of different materials and composite layers. Due to the functions of different layers, the material structure of the spout pouch can be high-resistant. Generally, it is mainly divided into 3 layers, 4 and 2 layers of products.
Outer layer: This layer is where you show your brand and advertisement for your brand. The outer layer is a layer of customers visible, so it is usually bright and attractive.
Middle layer: This is the protective layer of the bag. This layer protects the strength of the bag body to ensure the freshness and durability of the content items.
Inner layer: The content of the hot seal layer and the food layer, the contents of the bag are directly contacting the layer.
The outermost layer of the spout pouch is printed on the material directly. This material is usually Polyethylene terephthalate (PET). The middle layer is a material for the protection of barrier, usually nylon or metallic nylon. The most commonly used material in this layer is the innermost layer of the metallic PA film (MET-PA) is the hot seal layer, which can be sealed into a bag. The material of this layer is polyethylene PE or polypropylene PP.
In addition to PET, MET-PA, and PE, other materials such as aluminum and nylon are also good materials for making spout pouches. Common materials used to make spout pouches: PET, PA, MET-PA, MET-PET, aluminum foil, CPP, PE, VMPET, etc. These materials have a variety of functions depending on the product you want to use in the spout pouch.
Typical 4 -layer structure: aluminum foil retort pouch PET/AL/BOPA/RCPP
Typical 3-layer structure: transparent high-resistance fruit jam bag PET/MET-BOPA/LLDPE
Typical 2 -layer structure: BIB transparent corrugated box liquid bag BOPA/LLDPE
Post time: May-18-2022