Abstract: An article for laser marking can comprising: a thermoplastic composition comprising a thermoplastic polymer, an active component comprising at least one of a polymeric unit and an additive, wherein the thermoplastic polymer has a visible transmission of greater than or equal to 80% according to ASTM D1003-00, Procedure A, using D65 illumination, 10 degrees observer, and thickness of 1 mm; and a mark produced by chemical rearrangement of the active component generated by a laser of a first wavelength; wherein the mark exhibits at least one of: (i) a change in optical properties in the region 400 nm to 700 nm when exposed to light having a wavelength less than or equal to 500 nm; and (ii) a change in optical properties in the region of 400 nm to 700 nm when exposed to light having a wavelength greater than or equal to the first wavelength.

Abstract: Various hybrid structures and methods of making the hybrid structures are provided. In one embodiment, a hybrid structure includes a backbone member of a first material composition and a secondary member of a second material composition different than the backbone member. The backbone member includes at least one closed portion along the length of the backbone member having a cross-section which varies along the length of the backbone, and the secondary member is disposed about at least a portion of the backbone member. In another embodiment, the secondary member extends about a portion of the external surface of the backbone member, through an opening of the backbone member and to the interior of the backbone member to interlock with the backbone member.