4.4.6 bao bì cho các sản phẩm iqfThe packaging system for iqf products is not standardized, which vary from processor to processor. Iqf shrimp and other items are not well protected compared with their glazed, block-prozen counterparts against dehydration and oxidative rancidity during storage. Hence, there is a need for good-quality packaging material. In general, the package system followed by processors is plastic-film pouches (monofilms or co-extruded films)that may be printed to indicate the details regarding the product. When laminated to print surface it will brighten the colors appreciably and enhance the sales appeal of the package as a whole. Besides, lamination prevents moisture affecting the cartons. Compression strength of 500kg has been specified to provide reasonable safety to the product. Generally, the product is placed in the primary container/pack along with the code slip and weighed. The unit pouch carries product weighing 500g, 1, 2, or 4 kg. Since the unit-packaging material is in direct contact with the food, it should have adequate barrier properties to protect the product from dehydration, oxidation, discoloration, and off-flavor to offer shelf life extension, ease of distribution and presentation. An acceptedpack-aging material for iqf shrimp consists of 12 μm plain polyester laminated with 250-gause low- density polyethylene. The individual packages may either be placed in intermediate cartons or directly in master cartons. The intermediate cartons are made from duplex board or 3-ply corrugated fiberboard. The cartons must maintain their structural rigidity all the way to the market. It is usually made out of much more insulating, but stronger, corrugated-wall paperboard. Table 4.12 gives requirement for packaging frozen fishery products.
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