Method for reducing emissions and method for producing a wooden product
AssigneeAkzo Nobel N.V.
InventorsBenyahia Nasli-Bakir, Hans Ekblom
Life of this patent
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Abstract
The present invention relates to a method for reducing emissions of one or more gaseous substances from an assembly of at least two pieces of wooden materials, which have been glued together. It also relates to a method for producing a laminated wooden product comprising planing at least one of the sides of an assembly having glue lines exposed, and, treating the one or more planed sides by application of one or more treating substances reactive to one or more gaseous substances emitted from the at least one planed side. Finally, the present invention relates to a laminated wooden product having low emissions.
Claims33
Method for reducing emissions of one or more gaseous substances, emitted from an exposed glue line of an assembly of at least two pieces of wooden materials which have been glued together with glued surfaces oriented in a first plane, the one or more gaseous substances belonging to the group of aldehydes or isocyanates, comprising planning a surface oriented in a plane transversely to the first plane having glue lines exposed, followed by treating the surface oriented in a plane transversely to the first plane by application of a liquid treating composition containing one or more treating substances reactive to an aldehyde or an isocyanate.
Method for producing a laminated wooden product comprising the steps of:
- (a)-applying an adhesive system onto at least a first surface of one or more wooden lamellas,
- (b)-assembling the one or more wooden lamellas together with one or more further wooden lamellas into an assembly with the first surface facing a second surface of the one or more further wooden lamellas wherein the first and second surfaces are oriented in a first plane,
- (c)-pressing the assembly,
- (d)-planing a third surface of the assembly that is oriented in a plane transversely to the first plane, wherein the third surface having glue lines exposed, and,
- (e)-treating the third surface by application of a liquid treating composition containing one or more treating substances reactive to an aldehyde or an isocyanate emitted from the exposed gluelines.
Method for reducing emissions of gaseous substances from a glued laminate, comprising the steps of:
- (1) gluing together a plurality of lamellas, wherein the glued surfaces are oriented in a first plane, with an adhesive substance capable of emitting at least one gaseous substance being an aldehyde or an isocyanate, thereby forming a laminated beam having exposed glue lines on a surface oriented in a plane transversely to the first plane and from which surface oriented in a plane transverse to the first plane at least one gaseous substance can be emitted;
- (2) planing said surface oriented in a plane transversely to the first plane having exposed glue lines;
- and
- (3) treating the surface oriented in a plane transversely to the first plane by application of a liquid treating composition containing one or more treating substances reactive to an aldehyde or an isocyanate, thereby reducing or eliminating the emission of the aldehyde or the isocyanate.
Dependencies are inferred from the claim text.