Non-time dependent measured variables are used to effectively determine an optimal ejection time of a part from a mold cavity. A system and/or approach may first measure at least one non-time dependent variable during an injection molding cycle. The part is ready to be ejected from the mold upon the measured variable reaching a threshold value indicative of, for example, a part temperature dropping below an activation temperature.

A resin molding has a first surface and a second surface, wherein the second surface includes a rib, and wherein the first surface includes a glossy portion and a non-glossy portion.

There is provided a resin molded product including a hairline pattern having small roughness and high gloss. The resin molded product includes a surface having a hairline pattern in which a plurality of ridges extending in an X direction is arranged in a Y direction, thus the plurality of ridges includes a plurality of first ridges and a plurality of second ridges higher than the first ridges, with the hairline pattern having a maximum height Ry of 6 [m] or less in the X direction, and an arithmetic average curvature Spc of apex points of 625 [1/mm] or less.

The invention relates to a packaging method and to an associated packaging device (1) for packaging injection-molded plastic parts (2), which are pipette tips or medical reaction vessels, the injection-molded plastic parts (2) being arranged in cavity-pure subgroups (6) and then subjected to lateral inspection sub-subgroup (10) per sub-subgroup (10).