DE6608379U - BOX MOLDED IN PLASTIC. - Google Patents

Description

Tetra Pak International AB, S-221 01 Lund (Sweden)

Box molded from plastic

The innovation relates to a box made of plastic, the bottom of which has perforations is provided.

Such a box is already known. The openings in the bottom of the box serve to save material or for ventilation of the box, if it is covered with a lid or another box. It however, it has been found that such plastic boxes, in particular those produced by injection molding, are in particular are exposed to considerable stress after cooling, especially if the box is removed from a Piece is made in one operation. Apart from the deformations caused by such stresses there is also a considerable risk of breakdown. Does the box bump into something or grab it while the handling of the same additional forces on the box, then the risk of tearing or breaking is increased »

- 2nd

The object of the innovation is to improve the box of the type mentioned at the beginning with simple means. Internal stresses so eolles w _S i ± be compensated as possible to reduce the risk of deformation and cracking to reduce the box.

The innovation consists in the fact that the floor consists of a latticework, one of which is crossed along its length Lines running webs are connected by means of rings.

In the case of the box according to the innovation, internal stresses on the rings, which may be deformed without deforming the box itself, are balanced out. It is not necessary that all the crossing points of the webs formed in a ring shape "" ■ »» Λλ "Konli A-inov · rrurn olrmö CH cron Δ-πβΉΐ T rliiriir Λβτ WeIlPTIlΠ Sf

Therefore, the webs are directly connected to one another at crossing points regularly arranged in the latticework, so that such crossing points and rings alternate. As a result, practically the same equalizing effect is then achieved as with a latticework ^{which is provided with rings at all "web crossings 11} , without such stress-absorbing rings having to be arranged everywhere.

An example of the innovation is shown below using the Drawing described in more detail; show in it:

Fig. 1 is a perspective view of a novelty Box;

Fig. 2 is a bottom view of the box and

FIG. 3 shows a cross section through the box along the line III / III from FIG. 2.

The box generally consists of two short side walls 1, two long side walls 2 and a bottom 3. The bottom 3 has the shape of a latticework with diagonally extending webs 4 ¹ , 4 ", 5 ', 5% which are shown in FIG extend from bottom left to top right or from bottom right to top left. At regular intersection points 6, the webs 4 'and 5 ¹ or 4 "and 5" cross directly, while adjacent "intersection points" are provided with rings 7, which the auxnessen grid voltages. Until rings 7a, the web 4 connect "and 5 ^1" ad the rings Tb connect the webs 4 and * 5 "with each other.

Some rings 8 are completely filled with plastic as injection points for the plastic.

If there is tension, e.g. thermal tension, it is the floor occur, the rings 7 act there as a stress absorber, since they are both compressed and pulled apart can be. If the tensions are symmetrical, the rings 7 tend in both cases to one Assume rectangular shape.

- Protection claims - 4 -

Claims (2)

Protection of sayings 1. Box molded from plastic, the bottom with Breakthroughs is provided, characterized in that the floor (3) consists of a latticework "" "on to which webs (4 '> 4 ", 5'f 5") running along intersecting lines are connected by means of rings (7, 7a, 7b). 2. Box according to claim 1, characterized in that webs (4 ¹ , 4 ⁿ , 5 ^1. 5 ") are directly connected to each other at crossing points (6) regularly arranged in the latticework.