Translated material
Cardboard Liner
If you take a corrugated cardboard, then one of the component is a cardboard liner.
You can hear such a name for the first time and not know what this material is. This cardboard liner . Cardboard used for flat layers of the material. If you take regulatory documentation, then you cannot find this term.
The wavy shape layers of corrugated cardboard are called flitting. It is usually placed between flat. Depending on the number of sheets as a whole, one can distinguish corrugated cardboard consisting of three, five and seven layers. This material, resembling a layer cake, consists of alternating sheets of liner and flubye.
Varieties of cardboard for a flat layer
There are several varieties of cardboard used for flat layers. So based on the FEFCO classification, the liner can be divided into a craft liner and a test liner.
- Craft liner
Kraft liner-is a material that is eighty percent consists of such a material as cellulose. The remaining twenty percent is a mixture, consisting of primary fibers. Kraft liner, consisted of cellulose, hence its name of the top liner. Despite the fact that there are many components of secondary fibers in the composition.
This is a multi -layer material, layers can be from two to eight. It is used in the process of production of containers, which should take high loads. The highest quality packaging is just made using special varieties of a two-layer craft liner.
- Test-liner
The test liner makes them the same components, but they are already taken in completely different components. The material is multi -layer, so the material is of low strength, as well as stiffness. This is all explained by the fact that in the composition you can find many secondary fibers located in the lower layers. The most important feature of such a material is that the outer layer additionally passes the processing process. It is already subsequently subjected to caching, superficially glued, processed using additives. The main goal of this process is to create an additional properties test-liner. Such as resistance to low temperatures, water resistance, and resistance to high humidity.