*please visit following link where you can see the pictures:
http://www.internationaldovesociety.com/nestingcontainers.htm
http://www.patentstorm.us/patents/6267550-description.html
*A nest and stack container adapted to nest in, or stack on, a lower container of like construction, depending upon the orientation of the upper container with respect to said lower container. The walls of the container comprise bar members which extend between the bottom and an upper guide rail of the container. Said bar members are arranged such that the bar members of an upper container parallel the bar members of a lower container during nesting. Said guide rails on opposite ends or sides of the container make possible "blind stacking" or "blind nesting" of the containers, even at heights greater than the height of the person stacking or nesting the containers.
*There are two types of stack and nest container. The first and most common is a bale arm container. This uses a bale arm to support the container above for stacking. This bale arm folds back to allow the container to nest. The second is 180º stack and nest container, this allows the container to stack when the above container is placed the opposite way round to the lower container yet when placed in the same direction will nest. Both types of containers have tapered sides to allow for nesting. This type of container is mainly used in the agricultural produce industry or where empty containers are returned in a returnable trip packing (RTP) system to minimise transport action costs.
PRO’s: Good containers for a RTP system where empty containers are returned or storage space is at a premium.
CON’s: Due to the tapered sides the capacity of the containers is reduced.
*With in-container sterilisation, the packaged product is sterilised after the container has been filled and hermetically sealed. Hence, the product is sterilised inside the container. This method offers the benefit of single-stage sterilisation and eliminates the need for aseptic packaging.
The products can be packaged in rigid, semi-flexible, or flexible packaging as long as the package can withstand thermal treatment. Typical products utilising this method are soups, meats, vegetables, dried beans, and non-heated sensitive low-acid beverages.
The line would include filling and sealing equipment followed by the Stork continuous hydrostatic steriliser, which can be designed in a variety of executions to provide high capacity and uniform thermal processes.