A method of forming a part includes 3D printing a photopolymerizable resin and forming a preformed part and subsequently post-curing the preformed part with electron beams. The preformed part may be cured via UV curing. A section of the preformed part post-cured with electron beams may have a thickness of at least 1.0 centimeter, for example, at least 2.0 centimeters or at least 3.0 centimeters. An electron beam dosage to post-cure the preformed part may be between 10 kilogray (kGy) and 100 kGy. The preformed part may be 3D printed using stereolithography (SLA), digital light processing (DLP) or material jetting (MJ) and the photopolymerizable resin may include at least one of an acrylate functional polymer and a methacrylate functional polymer. In the alternative, or in addition to, the photopolymerizable resin may include at least one of a urethane, a polyester, and a polyether.

Embodiments of the disclosure include elastomeric stretch fibers containing an anti-tack agent, methods of preparing the fiber, methods of using this fiber, articles including this fiber, and the like.

A method and an apparatus are provided for Electron Beam (EB) curing of coils that are coated with energy cured resins. The apparatus comprises a curing assembly, a microprocessor unit, one or more sensors, and a user interface. The curing assembly comprises of a fixed part and a movable part. The fixed part comprises a rotator and a first moving means. The movable part comprises of an accelerator. The fixed part and the movable part are movably coupled to each other using a coupler. The coupler is configured to move using a second moving means. The curing assembly is communicatively coupled to the microprocessor unit. The coil comes at the input gate at the fixed part of the curing assembly for the curing purposes and exits through the output gate at the fixed part of the apparatus after being cured.

A method of forming a part includes 3D printing a photopolymerizable resin and forming a preformed part and subsequently post-curing the preformed part with electron beams. The preformed part may be cured via UV curing. A section of the preformed part post-cured with electron beams may have a thickness of at least 1.0 centimeter, for example, at least 2.0 centimeters or at least 3.0 centimeters. An electron beam dosage to post-cure the preformed part may be between 10 kilogray (kGy) and 100 kGy. The preformed part may be 3D printed using stereolithography (SLA), digital light processing (DLP) or material jetting (MJ) and the photopolymerizable resin may include at least one of an acrylate functional polymer and a methacrylate functional polymer. In the alternative, or in addition to, the photopolymerizable resin may include at least one of a urethane, a polyester, and a polyether.