A conveyor system includes a rail having one or more channels therein and one or more sleds operatively associated with the rail. A sled can include a body and one or more wheels mounted on the body and configured to move through the one or more channels in the rail. A sled can also include a holding device connected to the body. The holding device can be configured to engage a packaging container to move the packaging container along the rail. Multiple sleds can be used to secure a packaging container therebetween and move the packaging container along the rail. The conveyor system may also include a queue system that dynamically moves packaging containers to packaging stations.