Multi-layer reinforcing laminate
AssigneesHenkel Kommanditgesellschaft auf Aktien, Dr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsKarl Wesch, Matthias Jaehnichen, Adriano Morozini De Lira, Juergen Durm, Dietger Frisch
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Abstract
Multi-layer laminates are provided which contain at least two binder layers and at least two textile-containing layers. One binder layer faces a substrate to be reinforced, with a second binder layer between two textile-containing layers wherein one of the textile-containing layers is interposed between the binder layers. The binder layer facing the substrate has an elasticity modulus when cured which is less than or the same as the elasticity modulus of the second binder layer. The laminates are suitable for reinforcing or stiffening planar substrates, especially thin-walled substrates such as motor vehicle body parts.
Claims19
A multilayer laminate for stiffening a flat substrate comprising at least two heat-curable binder layers and two layers of fiber-containing flat textile materials, wherein a first binder layer faces the substrate to be stiffened, a second binder layer is remote from the substrate to be stiffened, a first layer of a fiber-containing flat textile material is arranged between the first binder layer and the second binder layer, a second layer of a fiber-containing flat textile material is arranged on the second binder layer remote from the substrate to be stiffened, the first binder layer facing the substrate to be stiffened being adhesively joined to the substrate to be stiffened and having the same elasticity modulus as, or a lower elasticity modulus than, the second binder layer when cured, wherein the surface areas of the second binder layer and the second layer of flat textile material are smaller than the surface areas of the first binder layer and the first layer of flat textile material.
A multilayer laminate for stiffening a substrate, comprising:
- a first heat-curable binder layer for contacting the substrate;
- a second heat-curable binder layer, said first binder layer having an elasticity modulus less than or equal to the second binder layer when cured;
- a first textile layer interposed between the first and second binder layers;
- and
- a second textile layer affixed to the second binder layer distal to the first textile layer, wherein:
- a) the surface areas of the second binder layer and the second textile layer are smaller than the surface areas of the first binder layer and the first textile layer;
- or
- b) the laminate has openings which extend only through the second binder layer and the second textile layer.
A multilayer laminate for stiffening a flat substrate comprising at least two heat-curable binder layers and two layers of fiber-containing flat textile materials, wherein a first binder layer faces the substrate to be stiffened, a second binder layer is remote from the substrate to be stiffened, a first layer of a fiber-containing flat textile material is arranged between the first binder layer and the second binder layer, a second layer of a fiber-containing flat textile material is arranged on the second binder layer remote from the substrate to be stiffened, the first binder layer facing the substrate to be stiffened being adhesively joined to the substrate to be stiffened and having the same elasticity modulus as, or a lower elasticity modulus than, the second binder layer when cured, wherein the laminate has holes or slots which extend only through the second binder layer and the second layer of fiber-containing flat textile material.
Dependencies are inferred from the claim text.