Commodity Search Form

Description: There are several different methods of packing, and from observation these would appear to have a direct bearing on the cause of the mildew. It is only the interior packing which varies, all bales being finally Hessian-wrapped and secured by four or five steel bands around the top and bottom and flats of the bales and two bands around the ends and sides. The interior packing may be one of the following: (a) Plain brown paper covering the cloth, and then covered with one or two layers of bitumen-lined paper, and the Hessian cover placed over all. (b) Plain brown paper covering the cloth plaited cane matting over the tops and bottoms and part way down the sides, and ends, one or two layers of bitumen-lined paper over the matting, and a final Hessian cover. (c) The cloth covered at tops and bottoms with a sheet of polythene material which extends part way down the sides and ends and a Hessian wrapper over all. Surveyors' examinations have revealed that in most of those instances where the bales are externally unstained and brown paper and bitumen-lined paper only are used as interior protection, the cloth is in good order. Where cane matting is employed, or the cloth is covered with a polythene wrapper, mildew has developed and it is noticeable that where the matting or polythene does not cover 7the cloth there is no mildew. It would appear that shippers, in attempting to prevent moisture penetrating to the cloth may have inadvertently produced the very conditions they have set out to avoid, because while the packing has successfully excluded external moisture it has at the same time prevented the escape of any internal moisture which may have been in the pieces at the time of packing. Very little moisture need be present to set up a mildew growth on gray cloth, given suitable conditions, and it is possible that the subjection of pieces to a highly humid atmosphere prior to packing is alone sufficient when the appropriate conditions are present to produce an excess of moisture which cannot escape. Alternatively, a somewhat similar result can be obtained through the cloth being warm when packed, and, when the bales are subjected to a lower temperature, light condensation takes place on the moisture proof wrapping, resulting in mildew.
Index: 239

Commodity Search