Systems and methods for joining blade components of a rotor blade are provided. A method includes positioning a first blade component and a second blade component such that a joint location of the first blade component and a joint location of the second blade component are proximate each other. The method further includes applying a force to an outer surface of the second blade component and an opposing force to an inner surface of the second blade component. The force and opposing force maintain an aerodynamic contour of the second blade component. The method further includes connecting the joint location of the first blade component and the joint location of the second blade component together.

A portable vinyl sheet bending apparatus having an arcuate assembly for contacting a plastic composite member and a frame having a substantially planar frame base member. The apparatus includes a heating assembly mounted within the frame of the machine to provide uniform heat to a plastic composite member such that the temperature of heat provided allows for the plastic composite member to become pliable. The arcuate assembly includes two cylindrical rotator bars and a rotatable arcuate arm member for arcuately forming an edge of the planar plastic composite member between and around the cylindrical rotator bars.

A compound lens produced by heating and pressing a semi-cured product of a curable resin composition containing a (meth)acrylate monomer, a non-conjugated vinylidene group-containing compound, and a photo-radical initiator and a transparent substrate arranged so as to be in contact with the semi-cured product in a state in which a molding die is filled with the semi-cured product and the transparent substrate, and obtaining a cured product by allowing the semi-cured product to be thermally polymerized, exhibits an excellent transfer property, a small number of bubble mixtures, and excellent heat resistance and crack resistance.

Provided is a formed article including polychlorotrifluoroethylene, wherein the polychlorotrifluoroethylene has a melting point of 211 to 216 C., and the formed article has a projected area of 1,000 mm.sup.2 or more, a thickness of 25 to 50 mm, and a degree of crystallinity of 65% or less.