Research and Reports
Thermal performance
Sea Fish Authority: Confidential Report 192
In essence the report states the Tri-pack Coolseal box, designed specifically for use in chilled distribution, is fit for purpose in delivering fish in good condition.Thermal insulation values are infinitely better than fibreboard boxes and other alternatives. Polystyrene has better insulation qualities than Polypropylene, but of course the growth of the cold chain has negated the need for this degree of insulation.
Studies by the Seafish Authority ( report available to be downloaded) and the Humber Seafood Institute, as well as countless independent customer test have proven that the eps thermal barrier is too strong to allow the cold chain to work, and that fish in CoolSeal is maintained at the desirable temperature longer.
Food approval
The sheet material used to manufacture Coolseal fish boxes is made from a propylene ethylene copolymer (polypropylene).The base material in its translucent form is chemically inert and non-toxic. There are two additives white pigment (masterbatch) and calcium carbonate. Both are approved for direct contact food use.
Certificates are available on request.
Environmental Benefits
The easiest plastics to recycle are those which, like polypropylene, are from the polyolefin family. The material is simply granulated and reprocessed.There is a ready market for the recycled material. Coolseal boxes are made from 100% polypropylene with no foreign bodies to spoil the recovery process. The small amount of printing ink and glue does not pose any problem to the recycling process.
The re-processed granules can be re-extruded into fluted polypropylene, but as this cannot be white it has numerous other applications in construction and horticulture for example. Tri-Pack recovers its own factory trim by converting it back into pellet. This is re-extruded for our own purposes.
No hazardous substances are produced during the recycling process.
