Patent ID: 11969971
Assignee: KRONOSPAN LUXEMBOURG S.A.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 14:
15. An apparatus for the production of the oriented strand board of claim 1, the apparatus comprising:
at least one scattering apparatus for production of a first surface layer mat, having wood material consisting of recycled wood flakes and oriented strands that have been provided with binder;
at least three scattering apparatuses for production of three core layer mats on the first surface layer mat, wherein the at least three scattering apparatuses is preceded upstream by at least one binder apparatus for application of a binder to the flakes of the three core layer mats;
at least one scattering apparatus for production of a second surface layer mat having wood material consisting of recycled wood flakes and oriented strands that have been provided with binder on the three core layer mats,
wherein the at least one scattering apparatus for production of the first and the second surface layer mat is preceded upstream by a common binder apparatus for application of a binder to the flakes of the surface layer mats or by one separate binder apparatus for each; and
a press, arranged downstream of the scattering apparatuses, for pressing of the scattered particle mat at elevated temperature relative to standard conditions; and
a) at least one classifying apparatus, connected upstream of the scattering apparatuses, for production of a surface layer fraction, a core layer fraction and optionally a fines fraction is included, wherein the surface layer fraction produced is sent in each case to the at least one scattering apparatus for production of a first and second surface layer mat, and the core layer fraction and optionally the fines fraction are sent to the at least three scattering apparatuses for production of the three core layer mats, and
the at least one classifying apparatus is preceded upstream by at least one mixing bunker for mixing of strands and recycled wood flakes; and/or
b) each at least one scattering apparatus for production of the first and second surface layer mat is preceded upstream by a flaking apparatus for production of strands from virgin wood (VW), and
the at least three scattering apparatuses for production of three core layer mats is preceded upstream by at least one apparatus for flaking of recycled wood (RW) to obtain recycled wood flakes.