Assymetric Paperboard
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 13, 2025
app pub date -
Aug 11, 2022
filing date -
Aug 11, 2022
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Abstract
There is provided a multi-layered paperboard (200, 300) comprising a first cellulose fibre-based layer (201, 301) and a second cellulose fibre-based layer (202, 302), which second layer (202, 302) has an inner surface facing in the direction of the first layer (201, 301) and an outer surface facing in the opposite direction, wherein the density of the second layer (202, 302) is below 550 kg/m3 and lower than the density of the first layer (201, 301) and wherein an additive (204, 304) selected from the group consisting of starch, fines, MFC, CMC and PVOH is added to the outer surface of the second layer (202, 302), with the proviso that no further cellulose fibre-based layer is provided on the outer surface of the second layer (202, 302).
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