Reinforcement of hollow profiles
A structural reinforcement comprising a hollow profile and a ribbed structure, the ribbed structure including a laminar structure of two facing sheets with a first layer of adhesive material that is foamable and located in between the two facing sheets, the ribbed structure having ribs with one or more ends and a second adhesive material that is provided over at least part of the ribs at the one or more ends to bond the ribs at the one or more ends to an interior surface of the hollow profile.
1. A structural reinforcement system comprising a metal hollow profile and a thermoplastic ribbed structure, the thermoplastic ribbed structure including a laminar structure of two facing sheets with a first adhesive material that is foamable and located in between the two facing sheets, the ribbed structure including ribs with one or more terminating ends of each rib and a second adhesive material that is provided over at least a portion of the ribs at the one or more terminating ends to bond the one or more terminating ends to an interior surface of the hollow profile, wherein:
i. the first and second adhesive materials are both foamable materials with a degree of expansion of from 60% to 200%;
ii. the foamable materials include a solid epoxy resin, a liquid epoxy resin, or a combination of both;
iii. the foamable materials both foam at a temperature in the range of 120° C. to 210° C.; and
iv. the second adhesive material is provided on the ends of the ribs to bond the ribbed structure to the profile.
2. The structural reinforcement system of claim 1 , wherein the second adhesive material is provided on the ribs by extrusion in place.
3. The structural reinforcement system of claim 1 , wherein grooves are provided along portions of the one or more terminating ends of each of the ribs for receiving the second adhesive material.
4. The structural reinforcement system of claim 3 , wherein a portion of the terminating ends of each of the ribs are not provided with the second adhesive material and contact the inner surface of the hollow profile.
5. The structural reinforcement system of claim 1 , wherein the ribbed structure carrying the second adhesive material includes a fastener for attachment to a wall of the hollow profile.
6. The structural reinforcement system of claim 1 , wherein the second adhesive is a heat activatable material.
7. The structural reinforcement system of claim 1 , wherein the second adhesive material is heat activatable to both foam and develop adhesive properties at a temperature in the range 120° C. to 210° C.
8. The structural reinforcement system of claim 1 , wherein the hollow profile includes a polymeric overmoulding material.
9. The structural reinforcement system of claim 1 , wherein the hollow profile includes a hollow section and a cover.
10. The structural reinforcement system of claim 8 , wherein the polymeric material is connected to the hollow profile by the second adhesive material.