Fluting Medium

Fluting Medium is one of the core raw materials in corrugated board production, specifically referring to the paper used to make the corrugated core layer (i.e., the wavy middle layer). It is usually made from recycled waste paper (OCC) or semi-chemical pulp, with a basis weight generally between 90-180 g/m². In foreign trade, fluting medium is often imported and exported as an independent commodity, and together with Liner Board it forms the two major components of corrugated board. Use scenarios include: exporting fluting medium rolls to overseas paper mills or packaging companies, or importing fluting medium for domestic corrugated board production lines. Notes: specifications must be clearly stated (such as basis weight, width, ring crush strength, moisture content), country of origin, and whether recycled pulp is included and in what proportion, because different grades (such as regular fluting medium and high-strength fluting medium) directly affect the compression performance of corrugated board. The difference from 'Corrugated Paper' is that corrugated paper usually refers to the finished product already processed into a wavy shape, while fluting medium is unformed flat sheet or roll base paper. In addition, fluting medium and 'Medium Paper' are sometimes used interchangeably, but strictly speaking, medium paper can broadly refer to any middle-layer paper, while fluting medium more specifically emphasizes paper used for corrugated forming. Foreign trade contracts must specify inspection standards (such as ISO, TAPPI) and packaging methods (rolls, pallets) to avoid claims caused by insufficient strength or excessive moisture.