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US 10,577,469 B2Granted
3D-formable sheet material
AssigneeFiberLean Technologies Limited
InventorsJohannes Kritzinger, Michel Schenker, Patrick Gane, Philipp Hunziker
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Abstract
The present invention relates to a 3D-formable sheet material, a process for the preparation of a 3D-formed article, the use of a cellulose material and at least one particulate inorganic filler material for the preparation of a 3D-formable sheet material and for increasing the stretchability of a 3D-formable sheet material, the use of a 3D-formable sheet material in 3D-forming processes as well as a 3D-formed article comprising the 3D-formable sheet material according.
Claims28
A 3D-formable sheet material comprising
- a) a cellulose material in an amount from 5 to 55 wt.-%, based on the total dry weight of the 3D-formable sheet material, wherein the cellulose material is a cellulose material mixture comprising
- i) nanofibrillated cellulose and/or microfibrillated cellulose in an amount of ≥55 wt.-%, based on the total dry weight of the cellulose material mixture, and
- ii) cellulose fibres in an amount of ≤45 wt.-%, based on the total dry weight of the cellulose material mixture,
- and the sum of the amount of the nanofibrillated cellulose and/or microfibrillated cellulose and the cellulose fibres is 100 wt.-%, based on the total dry weight of the cellulose material mixture, and
- b) at least one particulate inorganic filler material in an amount of ≥45 wt.-%, based on the total dry weight of the 3D-formable sheet material,
- wherein the sum of the amount of the cellulose material and the at least one particulate inorganic filler material is 100.0 wt.-%, based on the total dry weight of the cellulose material and the at least one particulate inorganic filler material.
3 more elements
Dependencies are inferred from the claim text.