Laminate with mutually offset layers

Abstract

A method for the production under elevated pressure and temperate of a laminate ( 1, 1′ ) consisting of a pack with alternating metal layers ( 2 ) and plastic bonding layers ( 3 ), comprises stacking a first series ( 8 ) of layers on top of one another in a mould, then stacking at least a second series ( 7, 7′ ) of layers on top of the first series ( 8 ) of layers, with the formation of the pack of layers such that at at least one edge of the pack at least one ( 7 7′ ) of the series is stepped back with respect to the other series ( 8 ), an auxiliary tool ( 12 ) being placed alongside the stepped-back series ( 7, 7′ ) and on the other, non-stepped-back series ( 8 ) and a gap ( 13 ) being formed between the stepped-back series ( 7, 7′ ) and that side ( 14 )of the auxiliary tool ( 12 ) facing said series, raising the temperature and the pressure on the pack and the auxiliary ( 12 ) tool such that the binder in the plastic bonding layers ( 3 ) is made to flow and some of the binder present in the stepped-back series ( 7, 7′ ) collects in said gap ( 13 ).

1 - 3 . (canceled) 
   
   
       4 . Laminate ( 1 ,  1 ′) comprising a first series ( 8 ) of layers, at least a second series ( 7 ,  7 ′) of layers on the first series ( 8 ) of layers forming a pack such that at least one edge of the pack ( 7 ,  7 ′) of the series of layers is indented with respect to the other series ( 8 ), the edge ( 10 ) of the indented series ( 7 ,  7 ′) of layers being covered by a layer ( 16 ) of a binder. 
   
   
       5 . Assembly comprising two laminates of  claim 4  attached to one another. 
   
   
       6 . Assembly according to  claim 5 , wherein, in the direction traverse to the surface of the laminates, at least one stepped-back series ( 7 ,  7 ′) of the one laminate is next to a non-stepped-back series ( 8 ) of the other laminate. 
   
   
       7 . Assembly according to  claim 5 , wherein, in the direction traverse to the seam defined between the laminates, at least one non-stepped-back series ( 8 ) of layers is opposite a stepped-back series ( 7 ) of layers. 
   
   
       8 . Laminate consisting of a pack with alternating metal layers and plastic bonding layers, wherein said plastic bonding layers contain fiber layers and a binder, made under elevated temperature and pressure by stacking a first series of layers on top of one another in a mold, then stacking at least a second series of layers on top of the first series of layers, forming the pack of layers such that at least one edge of the pack of at least one of the series is stepped back with respect to the other series, placing an auxiliary tool alongside the stepped-back series and on the other, non stepped-back series to form a gap between the stepped-back series and a side of the auxiliary tool facing said stepped-back series, raising the temperature and the pressure on the pack and the auxiliary tool such that said binder in the plastic bonding layers is made to flow and some of the binder present in the stepped-back series collects in said gap, sealing the fiber layers so as to prevent the penetration of moisture into the fibre layer and forming a substantially un-rounded edge, wherein the laminate is specifically used to form an aircraft body panel.