[Abstract] An insulation board used for constructing freight containers is composed of hard insulation material core material. The core material is completely wrapped with polyethylene foam cladding. The core material is made of polyurethane, polystyrene or polyethylene benzol. Diester foam block structure, polyethylene foam is closed cell foam or non-crosslinked foam, the inner surface and outer surface of the insulation board are each composed of a layer of polyethylene foam, the density of the inner surface is greater than the density of the outer surface formed, the thickness of the inner surface Smaller than the outer surface. One or more thermal insulation panels constitute a thermal insulation transport packaging box, and a plurality of thermal insulation panels are assembled together to form a cube or a rectangular parallelepiped box, and the side panels are connected with the closed bottom panel. The connection between all the components can be by means of a heat bond or a combination of tongue and groove. The invention prolongs the service life of the packing box, improves the heat efficiency, reduces the use amount of the heat insulating material, reduces the weight of the standard size packing box, and thus reduces the use cost of the heat preservation freight packing box.

[Sovereign Items] 1. An insulation board used to constitute a shipping container, characterized in that: the insulation board is composed of a hard insulation material core material, and the core material is completely wrapped with a polyethylene foam cover.

Source: Wanfang Data Resources