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LastUpdate Última actualización 30/04/2026 [07:07:00]
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AN AIR-LAID BLANK, A METHOD OF PRODUCING AN AIR-LAID BLANK AND A METHOD OF PRODUCING A THREE DIMENSIONAL PRODUCT FROM SAID AIR-LAID BLANK

Nº publicación: ES3061115T3 31/03/2026

Solicitante:

STORA ENSO OYJ
Stora Enso Oyj

US_2023332341_PA

Resumen de: US2023332341A1

An air-laid blank (10) comprises natural fibers at a concentration of at least 70% by weight of the air-laid blank (10) and a thermoplastic polymer binder at a concentration selected within an interval of from 2.5 up to 30% by weight of the air-laid blank (10). The air-laid blank (10) has an average density and a portion (11) of the air-laid blank (10) has a density different from the average density. The air-laid blank (10) is produced by modifying the air-permeability of a portion (121) of an air-permeable collector (120) to form a portion (11) of the air-laid blank (10) having a density from the average density. The air-laid blank (10) has two parallel planar major surfaces (12, 14)

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