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US 2025/0196022 A1Published application
Method and apparatus for processing birch bark
AssigneeInnomost Oy
InventorSami Selkälä
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Abstract
The present disclosure relates to a method for processing birch bark. The present disclosure further relates to an arrangement for processing birch bark.
Claims16
A method for processing birch bark, wherein the method comprises
- providing a raw material comprising birch bark,
- screening the raw material comprising birch bark to remove fines to form a screened raw material,
- separating the screened raw material into a fraction comprising inner bark and wood particles, and a fraction comprising outer bark,
- drying the fraction comprising outer bark to form dried bark,
- cutting the dried bark in a cutting mill to form cut bark,
- screening the cut bark to remove fines and form a fraction comprising bark,
- milling the fraction comprising bark in a cutting milling to form a bark powder.
4 more elements
An arrangement for processing birch bark, wherein the arrangement comprises
- a first drum screening device,
- a sorting device,
- a drying device,
- a first cutting mill,
- a second drum screening device, and
- a second cutting mill,
- arranged in the above specified order.
4 more elements
Dependencies are inferred from the claim text.