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US 7,976,900 B2Granted
Method for producing a fire-retardant veneer, and corresponding fire-retardant veneer
AssigneeFacc AG
InventorsWalter Stephan, Johann Einböck
Life of this patent
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Abstract
For producing a fire-resistant veneer or material composite having different core materials without adding salts or other commercial fire-retardant materials, liquid is drawn out from the pores of the veneer by heat treatment and is replaced by resin, and the veneer is, if required, subjected to a refining process.
Claims9
A method of producing a fire-retardant flat structural member configured as a composite body comprising the steps of:
- providing at least two veneer sheets and an intermediate layer of a core material located therebetween to provide the composite body;
- disposing a resin film between the intermediate layer of the core material and the respective veneer sheet on each side of the intermediate layer, the veneer sheets having pores;
- and
- supplying heat to the veneer sheets such that (i) water bound in the pores of the veneer sheets evaporates and is exhausted from the pores thereof and (ii) the resin films are liquefied by the heat, the exhausting evaporated water drawing the liquefied resin films into the pores of the veneer sheets by capillary action,
- the step of heating being effected under an applied pressure such that the evaporated water exhausted from the pores flows out through edges of the member.
2 more elements
Dependencies are inferred from the claim text.