Liner Standards
Depending on the application of your FIBC, it may be necessary to use an inner bag (liner) to improve special properties of the big bag and/or to protect your material.
These inner bags are mainly made of polyethylene (PE) or combined materials. There is also a matching liner for each FIBC, which is either glued, sewn or attached to the FIBC with adhesive strips.
PE inner bags are mainly characterised by their density. We therefore differentiate between LDPE (low density polyethylene), MDPE (medium density polyethylene) and HDPE (high density polyethylene).
Etheylene vinyl alcohol is a copolymer based on ethylene and vinyl alcohol. This product is mainly used for FIBCs to create a protective barrier between the product and the outer packaging. This is particularly useful for food FIBCs or big bags that need to protect their contents against external influences (e.g. oxygen or hydrocarbons, etc.).
These liners are used for FIBCs that require an inner pocket but also need to be dimensionally stable at the same time. To combine these properties, this inner liner functions like a PE Q-bag inside an outer PP big bag.
An inner liner is neither automatically antistatic nor conductive. If the outer bag is provided with antistatic/conductive properties, the inner pocket must follow suit (e.g. with a surface tension of 1.0×107 Ohm per square metre for conductive inner liners). Please contact us to find the best solution for your requirements.
An inner liner is neither automatically antistatic nor conductive. If the outer bag is provided with antistatic/conductive properties, the inner pocket must follow suit (e.g. with a surface tension of 1.0×109 Ohm per square metre for semi-draining and 1.0×1012 Ohm per square metre for inner liners with static absorption). Please contact us to find the best solution for your requirements.
Aluminium inner liners are another option for protecting food and other contents from external influences (such as oxygen, odours, foreign tastes, etc.). These liners are optimised against trickling and usually have a multi-layer/sandwich construction in which the aluminium is located in the middle as a barrier.
