| 摘要 |
A cardboard box is made with double jambs (4-9) and also double ledges (5-14), the former being provided with extensions (7-11) that may be adapted and fixed to the inner face of the ledges (5), configuring tubular columns in correspondence with the vertical edges of the box, which are closed, on the upper edge, by means of wings (16) that are a lateral extension of the terminal sector (14) of the ledges (5), which, in turn, are fixed to the body of the box by means of flaps (17) tilted onto the outer face of the jambs and adhered thereto. The cardboard is corrugated, composed of two external flat layers and an intermediate corrugated layer, at least one of which is aided by a waterproofing compound; inside said laminar body, a fibreglass mesh is placed inserted in a polyethylene layer. Thus, a box is obtained the edges of the different sectors whereof are oriented in such a way that they offer a minimum water absorption capacity and wherein said body is insulated against water and rigidified by means of the fibreglass mesh, which allows for the preservation thereof under extreme humidity and cold conditions for over 72 hours (the time corresponding to the logistics of fresh fish), while maintaining its mechanical conditions. |
