Patent GB-979746-A (GB)
Title: Surface construction and method and means for making same
IPC: B05D5/08
Filed: 1963-07-02
Abstract: A porous layer of aluminium, copper, iron, nickel or an alloy of these is deposited on an aluminium or ceramic surface to form a metallic structure with interstices, by applying a powder and sintering or by flame or plasma jet spraying; an anti-stick material such as P.T.F.E. or a silicone is then applied to the porous metal structure as an aqueous dispersion optionally under vacuum followed by curing.  Alternatively, the anti-stick material may be flame-sprayed simultaneously with the metal, either separately or in admixture therewith. As a final step the surface may be shotpeened to force the anti-stick material tightly into the pores. Specification 956,740 is referred to.ALSO:A household appliance, e.g. a cooking vessel, has a non-stick surface formed by a surface structure comprising a metallic structure with a multitude of insterstices formed therein and a filler structure composed of non-stick material substantially filling the interstices, said surface structure being a compacted structure having the metallic and filler structures intimately interlocked with each other.  The appliance may be a frying pan, griddle, waffle iron, coffee maker, oven liner, flat iron sole plate, or lawnmower casing, and may be made of aluminium or ceramic; a porous layer of aluminium, copper, iron, nickel or an alloy of these may be deposited on the surface to form the metallic structure with interstices, by applying a powder and sintering or by flame or plasma jet spraying.  The anti-stick material may be P.T.F.E. or a silicone and may be applied to the porous metal structure as an aqueous dispersion optionally under vacuum, followed by curing; alternatively, the anti-stick material may be flame-sprayed simultaneously with the metal, either separately or in admixture therewith.  Excess of anti-stick material is desirable; a further layer of the same or a different anti-stick material may be applied.  As a final step the surface may be shot-peened to force the anti-stick material tightly into the pores.  Specification 956,740 is referred to.ALSO:A flat-iron soleplate has a non-stick surface formed by a surface structure comprising a metallic structure with a multitude of interstices formed therein and a filler structure composed of non-stick material substantially filling the interstices, said surface structure being a compacted structure having the metallic and filler structures intimately interlocked with each other.  A porous layer of aluminium, copper, iron, nickel or an alloy of these may be deposited on the surface to form the metallic structure with interstices, by applying a powder and sintering or by flame or plasma jet spraying.  The anti-stick material may be P.T.F.E. or a silicone and may be applied to the porous metal structure as an aqueous dispersion optionally under vacuum, followed by curing; alternatively, the anti-stick material may be flame-sprayed simultaneously with the metal, either separately or in admixture therewith.  Excess of anti-stick material is desirable: a further layer of the same or a different anti-stick material may be applied.  As a final step the surface may be shot-peened to force the anti-stick material tightly into the pores.  Specification 956,740 is referred to.