Metso introduces a new two-layer ValFormer concept for lightweight containerboard

摘要

Metso has developed a new, cost-efficient two-layer ValFormer forming concept, which makes it possible to produce lightweight containerboard with only one hybrid forming unit. It tackles the boardmakers' challenges in combining lower basis weights, faster speeds and higher ash contents brought by the increased use of recycled fiber.rnThe benefits of the new forming concept include pure layer coverage, considerably lower residual variation in basis weight as well as excellent formation with no streaks or tiger stripes.