Fire lighter, process and device for the manufacture thereof

摘要

The firelighter block (B) flammable by a user to initiate the combustion of materials for an open or closed fireplace, comprises a coherent surface layer having a compressed mixture of wood chips or sawdust and paraffin powder (20-60 wt.%), and two opposite convex contact surfaces (1) with prominent support area (2) and a stable support. The block rests on the support area in stable equilibrium on a plane with a part (P2) of contacting face directed towards the plane. The coherence of the surface layer is provided by the paraffin, which partially adheres to wood chips or sawdust. The firelighter block (B) flammable by a user to initiate the combustion of materials for an open or closed fireplace, comprises a coherent surface layer having a compressed mixture of wood chips or sawdust and paraffin powder (20-60 wt.%), and two opposite convex contact surfaces (1) with prominent support area (2) and a stable support. The block rests on the support area in stable equilibrium on a plane with a part (P2) of contacting face directed towards the plane. The coherence of the surface layer is provided by the paraffin, which partially adheres to wood chips or sawdust. The compressed mixture of wood chips or sawdust with paraffin powder is more brittle than the mixture of the surface layer, under the coherent surface layer. In stable equilibrium position on a plane, the part of contacting face directed towards the plane and resting at a distance from the plane occupies the entire periphery of the prominent support area. The block has a section in the form of biconvex lens, oval, elliptical form, half-cylindrical or a part of half-cylinder. The contact surfaces rejoin along a thin peripheral edge. The wood chips or sawdust particles have a size that is able to pass through a sieve of which the mesh size is 4 mm, and a maximum dimension of 8 mm. The paraffin powder has a particle size of 600-800 mu m. The mixture further comprises a binder. Independent claims are included for: (1) a process for fabricating a firelighter block; and (2) a device for fabricating a firelighter block.