公开(公告)号：EP4379135A1

公开(公告)日：2024-06-05

申请号：EP23211902.4

申请日：2023-11-24

申请人： Impact Acoustic AG

发明人： GATELLI, Massimo ,  MILANI, Paolo ,  COLCIAGO, Isabella ,  GHILARDI, Giovanni

IPC分类号： D21J1/20 ,  D21J3/00

CPC分类号： D21J1/20 ,  D21J3/00

摘要： Method for producing a sound absorbing panel (F) comprising the step of providing a predetermined amount of cellulose fibres. Cellulose fibres have an average length comprised between 0.5 mm and 5 mm, preferably comprised between 1.3 mm and 2.5 mm. The method further comprises a step of soaking the cellulose fibres in a water basin (100) to form a pulp (P) and a step of depositing the pulp (P) on a moulding die (200). The method further comprises a step of pressing said the pulp (P) in order to cause at least a partial removal of the water contained making a fibre mat (T). The method also comprises a step of drying the fibre mat (T) so as to cause evaporation of the water remained in the fibre mat (T) making the sound absorbing panel (F).