Method for manufacturing composite building panels
A method for manufacturing frame-type composite panels to a desired length comprises forming an elongate core-frame composite in which frame members have been received in slots on a slab of core material. The composite is cut to the desired length and the frame is finished by application of end members. The method described herein allows composite frame panels to be formed without restriction on the length typically due to the length of the mold in which the core is formed. A drum for use in a system for creating composite panels is disclosed having protruding rings concentric to the drum. A slab of core material is passed between two such drums which form slots in the slab for receiving frame members when they contact the slabs.
1. A method of manufacturing composite building panels having a core and a frame, comprising:
forming an elongate slab of core material, comprising molding a block of core material, separating slab portions from the block, aligning the slab portions end-to-end and connecting said slab portions to form said elongate slab;
attaching frame members to said slab to form a core-frame composite in which portions of each of said frame members are received in respective slots on said slab; and
separating individual composite panels from said core-frame composite.
2. The method of claim 1 , wherein said attaching comprises:
pouring a hardenable material into said slots; and
bonding said hardenable material to said slab.
3. The method of claim 2 , wherein said pouring further comprises pouring said hardenable material across a face of said slab.
4. The method of claim 3 , further comprising:
after said pouring, applying a finish material over the hardenable material on said slab; wherein said finish material bonds to said hardenable material.
5. The method of claim 4 , wherein said finish material is at least one of crushed granite and crushed marble.
6. The method of claim 2 , wherein said hardenable material is a slurry comprising Portland cement, high alumina cement, crystalline silica, one of glass and plastic fiber, and polymers.
7. The method of claim 6 , wherein a time for hardening of said hardenable material depends on properties of said polymers.
8. The method of claim 7 , wherein said time for hardening is between 10 and 45 minutes.
9. The method of claim 2 , wherein said separating occurs after hardening of said hardenable material.
10. The method of claim 2 , wherein said separating occurs prior to complete hardening of said hardenable material.
11. The method of claim 1 , further comprising:
prior to said attaching, cutting said slots into said elongate slab.
12. The method of claim 11 , wherein said cutting comprising bringing a plurality of protrusions on at least one rotating drum into contact with said elongate slab, each of said protrusions cutting a respective one of said slots when contacting and moving across said elongate slab.
13. The method of claim 12 , wherein a surface of said rotating drum is adapted to uniformly smooth a surface of said elongate slab when a surface of said rotating drum is contacting and moving relative to said surface of said elongate slab.
14. The method of claim 1 , further comprising: during said separating said slab portions, cutting said slots into each of said slab portions.
15. The method of claim 14 , comprising removing and cutting with a hot wire.
16. The method of claim 14 , comprising removing and cutting with a cold wire.
17. The method of claim 1 , wherein said forming, attaching and separating are continuous.
18. The method of claim 1 , further comprising:
prior to said adhering, roll-forming said elongate frame members from strips of sheet metal.