NOVELTY - Continuous method (M1) for reacting and converting municipal solid waste into a composite product, comprises: e.g. supplying municipal solid waste comprising at least one thermoplastic polymer; physically removing metals and glass from the solid waste followed by reducing the particle size of the solid waste into a size that permits the particles to be permeated with water; and permeating reduced size particles with water to a level of less than 20 vol.%, followed by continuous mixing, heating and chemically reacting water permeated particles with municipal solid waste solidification reagent.    USE - The methods are useful for reacting and converting municipal solid waste into a composite product (claimed), which is useful in various industrial or consumer type products, and in recycling applications.    ADVANTAGE - The methods: are continuous (claimed); provide foamed, environmentally stable and safe, and recycled composite product that provides low-cost recycled consumer or industrial products; and do not produce undesirable side products of both gaseous and particulate nature.    DETAILED DESCRIPTION - Continuous method (M1) for reacting and converting municipal solid waste into a composite product, comprises: supplying municipal solid waste comprising at least one thermoplastic polymer; physically removing metals and glass from the solid waste followed by reducing the particle size of the solid waste into a size that permits the particles to be permeated with water; permeating the reduced size particles with water to a level of less than 20 vol.%, followed by continuous mixing, heating and chemically reacting the water permeated particles with a municipal solid waste solidification reagent at below 150 degrees F in which municipal solid waste solidification reagent initiates a chemical polymerization reaction with the water in the water saturated particles and solidifies the water permeated particles along with a corresponding increase in volume of less than or equal to 20% to form foamed polyurethane structure having a density of 30-60 pounds/cubic foot (lbs./cu.ft); and further heating the foamed polyurethane structure to at least 220 degrees F to melt the thermoplastic polymers in the foamed polyurethane structure so that the thermoplastic polymers provide a thermoplastic binder for the structure, and a composite product is provided comprising 80-95 wt.% the municipal solid waste and having a density of greater than 60 lbs./cu.ft. An INDEPENDENT CLAIM is also included for a continuous method (M2) for reacting and converting municipal solid waste into a composite product comprising: (a) providing municipal solid waste comprising at least one thermoplastic polymer; (b) substantially removing metal from the solid waste by physically removing the metal from the waste; (c) placing the waste in step (b) into a shredder which reduces the particle size so that the particles can be permeated with water to a level of less than 10 vol.%; (d) permeating the product of step (c) with water to a level of less than 10 vol.%; (e) continuously mixing, heating and chemically reacting the waste of step (d) with a solidification reagent at below 150 degrees F to result in polymerization and solidification along with an increase in volume of less than or equal to 20% to form a foamed polyurethane structure at a density of 30-60 lbs./cu.ft; and (f) heating the foamed polyurethane structure of step (e) to at least 220 degrees F to melt the thermoplastic polymers so that the thermoplastic polymers provide a thermoplastic binder for the structure, and the composite product is provided comprising the municipal solid waste in a range of 80-95% by weight of the product and having a density greater than 60 lbs./cu.ft.