According to one embodiment, a system for manufacturing a polymethyl methacrylate (PMMA) prepreg includes a mechanism for continuously moving a fabric or mat and a resin application component that applies a methyl methacrylate (MMA) resin to the fabric or mat. The system also includes a press mechanism that presses the fabric or mat during the continuous movement subsequent to the application of the MMA resin to ensure that the MMA resin fully saturates the fabric or mat. The system further includes a curing oven through which the fabric or mat is continuously moved. The curing oven is maintained at a temperature of between 40° C. and 100° C. to polymerize the MMA resin and thereby form PMMA so that upon exiting the curing oven, the fabric or mat is fully impregnated with PMMA.

According to one embodiment, a system for manufacturing a polymethyl methacrylate (PMMA) prepreg includes a mechanism for continuously moving a fabric or mat and a resin application component that applies a methyl methacrylate (MMA) resin to the fabric or mat. The system also includes a press mechanism that presses the fabric or mat during the continuous movement subsequent to the application of the MMA resin to ensure that the MMA resin fully saturates the fabric or mat. The system further includes a curing oven through which the fabric or mat is continuously moved. The curing oven is maintained at a temperature of between 40° C. and 100° C. to polymerize the MMA resin and thereby form PMMA so that upon exiting the curing oven, the fabric or mat is fully impregnated with PMMA.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

A composition including at least one polyamide polymer obtained from at least one reactive polyamide prepolymer including at least one chain extender (PA.sub.1-All.sub.1-PA.sub.1), the polyamide polymer being prepared at a temperature T.sub.1 no lower than the temperature melting temperature or glass transition temperature of the polymer and having a mean molecular weight Mn.sub.1. The composition has a melt viscosity which can be modulated according to the temperature to which the composition is exposed, wherein the temperature is between T.sub.2 and T.sub.3, T.sub.2 and T.sub.3 being higher than T.sub.1, and the melt viscosity η.sub.2 or η′.sub.3 observed at the temperature T.sub.2 or T.sub.3, respectively, being lower than the melt viscosity η.sub.2 or η.sub.3 of the polyamide polymer, which does not include a chain extender and has the same mean molecular weight Mn.sub.1(PA.sub.1) observed at the same temperature T.sub.2 or T.sub.3. The composition includes one or more polyamides.

A composition including at least one polyamide polymer obtained from at least one reactive polyamide prepolymer including at least one chain extender (PA.sub.1-All.sub.1-PA.sub.1), the polyamide polymer being prepared at a temperature T.sub.1 no lower than the temperature melting temperature or glass transition temperature of the polymer and having a mean molecular weight Mn.sub.1. The composition has a melt viscosity which can be modulated according to the temperature to which the composition is exposed, wherein the temperature is between T.sub.2 and T.sub.3, T.sub.2 and T.sub.3 being higher than T.sub.1, and the melt viscosity η.sub.2 or η′.sub.3 observed at the temperature T.sub.2 or T.sub.3, respectively, being lower than the melt viscosity η.sub.2 or η.sub.3 of the polyamide polymer, which does not include a chain extender and has the same mean molecular weight Mn.sub.1(PA.sub.1) observed at the same temperature T.sub.2 or T.sub.3. The composition includes one or more polyamides.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.