Containers for bulk materials
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INTERNATIONAL FERRY FREIGHT Ltd. has developed, with ICI plastics division, a system for carrying granular chemicals in bulk in standard ISO containers and back-loading them with general freight. The required containers and tipping skeletal trailers are being manufactured and marketed by York Trailer Co. Ltd. (CM April 4 and April 18). The containers' simple modifications in no way impair their general utility and add a price increase of only about 20 per cent.
A disposable plastics lining, made from Alkathene, is put inside the container and temporarily inflated to expand it to the interior contours. The cargo is loaded from a hopper into the liner through four roof hatches, the hatches being used in turn to distribute the materials evenly in the container. When loaded the liner is sealed, the hatches closed and the container dispatched as a standard ISO container.
For delivery the container is loaded on a tipping skeletal trailer and to discharge the cargo the hatch in the front end wall is opened, and a funnel shaped discharge box, connected to a large bore outlet pipe, is attached. The container is then tipped to discharge. The disposable lining can be discarded and the container reloaded for return with general cargo.
This system can be used for movements of any dry granular materials; ICI has participated in the development because it enables the supplying of plastics materials in bulk to customers overseas where the cost of delivery in bulk has previously been prohibitive.
The tipping trailer for use with the containers has a regular skeletal frame but the outriggers, with international twistlocks, are fitted to a perimeter sub-frame which is pivoted at the rear end and tipped by a standard tipping gear at the front.