US 8,557,389 B2 · Use of a composite material based on a one component polyurethane adhesive

Abstract

The invention relates to the use of a composite material having two or more superimposed layers of wood as a support element in structural engineering, nautical, vehicle and aircraft constructions, energy production systems, mining or in the production of furniture. The wood layers are joined together by means of a one component polyurethane adhesive containing a prepolymer with free NCO groups and the wood has a structure having a volume fraction of libriform fibers of between 50%-70%.

Claims20

Dependent claims

A method of constructing a structure, the method comprising:

incorporating into, or combining with, the structure a structural element comprising a composite material comprising two or more layers of a wood
wherein the layers of wood are arranged one on top of the other,
wherein the layers of wood are bonded to one another with a one-component polyurethane adhesive comprising a prepolymer having a free NCO group, and
wherein the wood has a structure with a proportion by volume of libriform fibers of 50% to 70%.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/318,254Filed 26 Apr 2010

Priority

EP 0915916830 Apr 2009

Published

US 2012/0070671 A122 Mar 2012

Granted

15 Oct 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification41 codes

B32B 7/12
Interconnection of layers: using interposed adhesives or interposed materials with bonding properties
B32B 3/04
Characterised by features of form at particular places, e.g. in edge regions: characterised by at least one layer folded at the edge, e.g. over…
B32B 5/022
Characterised by structural features of a fibrous or filamentary layer: non-woven fabric
B32B 5/024
Characterised by structural features of a fibrous or filamentary layer: woven fabric

Use of a composite material based on a one component polyurethane adhesive

Life of this patent

Use of a composite material based on a one component polyurethane adhesive

Life of this patent

Abstract

Claims20