Sandwich panel, method of building such a sandwich panel, a core of such a sandwich panel, and a building built of a plurality of such sandwich panels

Abstract

The invention relates to a sandwich panel, comprising: —a core, comprising: —a plurality of zigzag-shaped first spacers extending in a first longitudinal direction, each first spacer comprising at each corner thereof a first loop; —a plurality of zigzag-shaped second spacers extending in the first longitudinal direction, each second spacer comprising at each corner thereof a second loop, each second loop having outer dimensions that are smaller than the inner dimensions of each first loop, —wherein the second loops of each second spacer extend through the first loops of an adjacent first spacer; —wherein the openings defined by the second loops of successive second spacers are registered in rows extending in a second longitudinal direction, which second longitudinal direction extends under an angle of at least 20° with respect to the first longitudinal direction; and—wherein the first spacers and the second spacers define a second zigzag-shape in the second longitudinal direction; —two skin layers arranged on opposite sides of the core, wherein each skin layer comprises a plurality of openings through which the second loops extend; —a plurality of rods, each rod extending through the openings of the second loops of each row at the outer surface of each skin layer such that each rod locks the second loops in the first loops with respect to the skin layer. The invention further relates to a method of building such a sandwich panel, a core of such a sandwich panel, and a building built of a plurality of such sandwich panels.

1 . A sandwich panel, comprising:
 a core, comprising:
 a plurality of zigzag-shaped first spacers extending in a first longitudinal direction, each first spacer comprising at each corner thereof a first loop; 
 a plurality of zigzag-shaped second spacers extending in the first longitudinal direction, each second spacer comprising at each corner thereof a second loop, each second loop having outer dimensions that are smaller than the inner dimensions of each first loop, 
 wherein the second loops of each second spacer extend through the first loops of an adjacent first spacer; 
 wherein the openings defined by the second loops of successive second spacers are registered in rows extending in a second longitudinal direction, which second longitudinal direction extends under an angle of at least 20° with respect to the first longitudinal direction; and 
 wherein the first spacers and the second spacers define a second zigzag-shape in the second longitudinal direction; 
   two skin layers arranged on opposite sides of the core, wherein each skin layer comprises a plurality of openings through which the second loops extend;   a plurality of rods, each rod extending through the openings of the second loops of each row at the outer surface of each skin layer such that each rod locks the second loops in the first loops with respect to the skin layer.   
     
     
         2 . The sandwich panel according to  claim 1 , wherein the angle is approximately 90°. 
     
     
         3 . The sandwich panel according to  claim 1 , comprising a limiter configured for limiting the distance by which each second loop extends through each first loop and/or by which each second loop extends through each opening in each skin layer. 
     
     
         4 . The sandwich panel according to  claim 3 , wherein the second spacer and/or the first spacer comprise(s) said limiter, said limiter comprising two elongated elements extending in the first longitudinal direction, which elongated elements mutually connect the second loops on each longitudinal side of the second spacer and/or which elongated elements mutually connect the first loops on each longitudinal side of the first spacer. 
     
     
         5 . The sandwich panel according to  claim 1 , wherein an angle of the first loop with respect to the longitudinal plane of the first spacer lies in the range of between 90° to 150°. 
     
     
         6 . The sandwich panel according to  claim 1 , wherein an angle of the first loop with respect to the skin layer lies in the range of between 0° to 45° 
     
     
         7 . The sandwich panel according to  claim 1 , wherein an angle of the second loop with respect to the longitudinal plane of the second spacer lies in the range of between 120° to 180°. 
     
     
         8 . The sandwich panel according to  claim 1 , wherein an angle of the longitudinal plane of the first spacer and/or an angle of the longitudinal plane of the second spacer with respect to the skin layers lies in the range of between 30° to 90°. 
     
     
         9 . The sandwich panel according to  claim 1 , wherein at least one of the two skin layers is a mesh. 
     
     
         10 . The sandwich panel according to  claim 1 , wherein at least one of the two skin layers is a panel. 
     
     
         11 . The sandwich panel according to  claim 1 , wherein at least one of the two skin layers is a sandwich panel, comprising a core and two skin layers, wherein the core and an inner skin layer of the two skin layers comprise said plurality of openings and wherein the outer skin layer covers said plurality of openings. 
     
     
         12 . The sandwich panel according to  claim 11 , comprising guiding means provided in the core of said sandwich panel skin layer for guiding the rods through said second loops. 
     
     
         13 . A method of building a sandwich panel, the method comprising:
 a) building a core, comprising the steps of:
 providing a plurality of zigzag-shaped first spacers extending in a first longitudinal direction, each first spacer comprising at each corner thereof a first loop; 
 providing a plurality of zigzag-shaped second spacers extending in the first longitudinal direction, each second spacer comprising at each corner thereof a second loop, each second loop having outer dimensions that are smaller than the inner dimensions of each first loop, 
 placing the second loops of each second spacer through the first loops of an adjacent first spacer, wherein the openings defined by the second loops of successive second spacers are registered in rows extending in a second longitudinal direction, which second longitudinal direction extends under an angle of at least 20° with respect to the first longitudinal direction, and wherein the first spacers and the second spacers define a second zigzag-shape in the second longitudinal direction; and 
   b) arranging two skin layers on opposite sides of the core by placing the second loops of the core through openings of the skin layers;   c) placing a plurality of rods through the openings of the second loops of each row at the outer surface of each skin layer such that each rod locks the second loops in the first loops with respect to the skin layer.   
     
     
         14 . An element, said element comprising:
 a plurality of zigzag-shaped first spacers extending in a first longitudinal direction, each first spacer comprising at each corner thereof a first loop;   a plurality of zigzag-shaped second spacers extending in the first longitudinal direction, each second spacer comprising at each corner thereof a second loop, each second loop having outer dimensions that are smaller than the inner dimensions of each first loop,   wherein the second loops of each second spacer extend through the first loops of an adjacent first spacer;   wherein the openings defined by the second loops of successive second spacers are registered in rows extending in a second longitudinal direction, which second longitudinal direction extends under an angle of at least 20° with respect to the first longitudinal direction; and   wherein the first spacers and the second spacers define a second zigzag-shape in the second longitudinal direction.   
     
     
         15 . The element according to  claim 12 , wherein the element is foldable between a folded up first state and an expanded second state.