TRANSPORT BOX

Abstract: A transport box (1) for perishable goods and like products comprises an inner box (2) consisting of insulating compound of cellular plastic and an outer protective box (3) of board. According to the invention the boards in the outer protective box (3) consist of solid fibreboard (4) which includes two or more different board layers (5-8) with glue lines (9) therebetween and which has a grammage of at least about 1000 g/ sq.m, said solid fibreboards (4) being coated with a metallized plastic film (10) on the outside of the protective box (3).

Description: TRANSPORT BOX The present invention relates to a transport box for perishable goods and like products, comprising an inner box consisting of insulating compound of cellular plastic or the like and an outer protective box of board. Characte- ristic of the invention is that the boards in the outer protective box consist of solid fibreboard/ which includes two or more different board layers with glue lines there¬ between and which has a grammage of at least about 1000 g/sq.m, said solid fibreboards being coated with a metal- lized plastic film on the outside of the protective box. With this invention a transport box has been created which to a very high degree protects the contents against tempe¬ rature changes, external forces and radiation. The solid fibreboards give, in combination with the insulating com- pound of cellular plastic or the like, an unexpectedly good insulation, at the same time as the solid fibreboards are especially apt to resist external forces. The protec¬ tion against radiation is provided by the covering on the outside of the protective box, which covering is of metal, e.g. aluminium, and, because it is coated with plastic, also protects the box against external attacks by moisture. The radiation protection is of vital importance because the transport box is also intended for air transportation, whereby it is liable to be exposed to the radiation occur- ring in airports. The invention will be described more fully below with reference to the accompanying drawing, which-shows an embodiment, chosen by way of example, of the transport box and in which:- Fig. 1 is a perspective view of the box; Fig. 2 is a cross-sectional view of the box? and Fig. 3 is a sectional view on an enlarged scale of the solid fibreboards included in the protective box. The transport box 1 comprises an inner box 2 and an outer box 3. The inner box 2 consists of an insulating C PI compound of cellular plastic or the like. The outer box 3 is a protective box of board. The boards in the outer protective box 3 consist of solid fibreboard 4 which includes two or more different board layers 5-8 with glue lines 9 therebetween, as is apparent from Fig. 3. The solid fibreboards 4 should have a grammage of at least about 1000 g/sq.m. According to one embodiment each of the layers 5 and 8 has a grammage of 60 g/sq.m, while each of the layers 6 and 7 has a grammage of 400-500 g/sq.m. The three qlue lines 9 consisting of waterproof glue have each a grrammaqe of about 15 g/sq.m. The boards in the two intermediate layers 6 and 7 include chemical admixtures to prevent the layers from swelling when attacked by moisture or water. As the solid fibreboards 4 with their waterproof glue lines 9 also are provided with plastic coatings 10 and 11 on their sides 10 and 11 it is obvious that the protective box 3 is highly resistent to attacks by moisture. The protective box 3 is coated on its outside with a plastic film 10, which is metallized to provide protection against radiation. The plastic film 10 consists preferably of polyester. The metal in the film is preferably of aluminium. The plastic film 11 on the inside of the protec- 1 tive box 3 consists preferably of LD polyethene, which may be pigmented with e.g. white.- During the manufacture the plastic films 0 and 11 adhere directly to the board layers 5 and 8. As is apparent from Fig. 2, the protective box 3 in¬ cludes a " lid box 12 and a bottom box 13. In this case it is only the lid box 1 " that is coated on its outside with the metallized plastic film 10, while the remaining sides of the two boxes 12 and 13 constituting the protective box 3 are coated with LD polyethene. Thus, the bottom of the protective box 3 is not provided with any netallized plastic film. This is so because the risk of the bottom being exposed to radiation is exceedingly small. The transport box 1 according to the present invention may of course be made in most various sizes. According to one embodiment, however, the size is 30 x 46 x 83 cm. If the transport box has this size, the solid fibreboards 4 in the cover box 12 should suitably have a grammage of about 1070 g/sq.m, while the solid fibreboards 4 in the bottom box 13 should have a grammage of about 1155 g/sq.m. In this case the solid fibreboards 4 are 1-2 mm thick, suitably 1.7 mm, while the cellular plastic in the inner box 2 is 3-5 cm thick. The transport box 1 is especially suitable for trans- port of such perishable goods and the like as are kept in hermetically sealable containers of non-rigid plastic and the like. This container should suitably fit in the inner box 2. Alternatively, several such containers should fit in the box 2. The air in the hermetically sealed container may also be replaced by a suitable preserving gas. The invention is not limited to that described above and shown in the drawing but may be modified within the scope of the appended claims. G:-:FI ' '

Claims: CLAIMS 1. A transport box for perishable goods and like products, comprising an inner box (2) consisting of insu¬ lating compound of cellular plastic or the like and an outer protective box (3) of board, wherein the boards in the outer protective box (3) consist of solid fibreboard (4) which includes two or more different board layers (5-8) with glue lines (9) therebetween and which has a grammage of at least about 1000 g/sq.m, said solid fibre¬ boards (4) being coated with a metallized plastic film (10) on the outside of the protective box (3). 2. A transport box as claimed in claim 1, wherein the solid fibreboards (4) include at least three different board layers (5-8) with glue lines (9) therebetween, the boards in the intermediate layer or layers (6, 7) including chemical admixtures to prevent the layers (6, 7) from swelling when attacked by moisture or water. 3. A transport box as claimed in claim 1 or 2, wherein the glue lines (9) between the different board layers (5-8) of the solid fibreboards (4) consist of waterproof glue. 4. A transport box as claimed in any of claims 1-3, wherein the metallized plastic film (10) on the outside of the protective box (3) consists of polyester, the metal suitably being aluminium. 5. A transport box as claimed in any of claims 1-4, wherein the solid fibreboards (4) . are coated with LD polye¬ thene (11) on the inside of the protective box (3). 6. A transport box as claimed in any of claims 1-3, wherein the protective box (3) consisting of solid fibre¬ board (4) includes a lid box (12) and a bottom box (13), and only, the lid box (12) is coated on its outside with the metallized plastic film (10), while the remaining sides of the two boxes (12, 13) constituting the protective box (3) are coated with LD polyethene (11). ' ■ ?!

Inventors: STAELBERG PER IVAR
Applicants: STAELBERG PER IVAR
Application year: 1981
Main classification: B65D81
IPC codes: B65D65, B65D81