DE2733456A1 - Plastics pallet composed of one top and three base parts - is made of large-cell hard foam with hard plastics integral skin, with embedded reinforcements - Google Patents

Abstract

Plastics pallet is composed of the top portion and (pref.) 3 identical bottom portions, all made of large-cellular, bulky, plastics pref. a hard foam, and coated with mechanically strong, hard, plastics, adapted to bear relatively heavy loads. In order to further increase mechanical strength, the structure is reinforced by embedded laminae, e.g. matting, or reinforcing filler in form of chips. At certain points esp. subjected to stresses, reinforcing strands pref. of glass fibre are embedded in top and bottom portions. The top of the pallet has a smooth surface devoid of apertures. Alternatively, it is structurised by crisscrossing grooves. Also, it may have a rim around its edges.

Description

Stacking plates (pallets) made of composite plasticO

For the transport and storage of a wide variety of goods in all Stacking battens are used in areas of the economy. The invention relates on a stacking plate made of a plastic combination and in the specified Dimensions according to the standard.

Stacking slats -pallets- are known which consist of wood, each made of individual boards and blocks; when nailed, they have a high dead weight.

b) consist of a thermoplastic plastic, in one piece injection-molded and ribbed according to the material requirements and thus have a small specific floor area.

c) consist of a duroplastiscnen plastic, the same have the properties listed under b).

d) so-called one-way pallets, consisting of pressed cardboard, resin-bound Chipboard materials, which are not discussed further here in their entirety.

The above-mentioned stacking plates have disadvantages in their individual cases on, which should be eliminated by the subject matter of the invention presented here.

In practice it has been shown that wooden pallets are relatively rough handling with industrial trucks etc. have a short lifespan, depending on the type of wood. Due to the given alternating stress during use or storage, drying out in closed rooms, exposed to outdoor weathering elsewhere and thus absorbing moisture, one of the corresponding takes place in many cases Splitting or splitting off from the nail points0 Hence the structural strength for heavy use and therefore the service life is severely impaired. Under Under certain circumstances, this can already be the case with new wooden pallets. That through this the same applies to general safety regulations in warehousing and transport can be significantly impaired, it should be noted.

It is recognized that the plastic pallets mentioned under b + c weigh these defects on. It can be seen, however, that these pallets are due to the material Construction - strong ribbing - and processing with a given load capacity or Load have a high specific soil pressure, which is particularly the case with truck beds and wagon floors made of wood lead to increased wear and damage leads.

The requirement is also evident in such known pallets an additional central truss arrangement to reduce the support width and given non-bending when stacking and depositing ifl t high-bay warehouse.

Due to the one-piece design and the necessary production costs, taking into account the rough operation in practice, a repair or Restoration of such stacking plates is not given, which makes the economic Factor is also adversely affected. All of the flat pallets listed above are subject to wear and tear on harder, rough deposit surfaces - concrete floors, courtyard pavements exposed by slag, split bitumen, stone paving, etc.

The object of the invention aims to improve or avoid it the considerable disadvantages mentioned. We (7 suggest a flat pallet, the basic shape of the body consists of several individual parts, which consist of an extreme lightweight, voluminous plastic are prefabricated. Is preferably used a plastic rigid foam. These individual bodies receive a first? Art plastic coating, preferably resins into which reinforcing laminates or chips are incorporated. this already gives a largely stiff and resilient body.

After connecting the individual parts -upper part and preferably three of the same Lower parts by screwing or gluing at the designated points, which have a tongue and groove fixation at the same time, there is another -or several- Application of a hard plastic layer to obtain a sufficient one Layer thickness. Overall, this gives a pallet body, its individual parts initially has the structure of an already solid sandwich body, according to which Assembly of the individual parts a composite body is given, which in principle and in static With regard to the structural strength of a lattice girder.

By using several details, one is for plastics manufacturing-related design possible, which at the same time a sufficiently large Floor loading or contact area and therefore a small specific floor pressure is reached at a given load.

The same is the design of the three identical lower part traverses given in such a way that the use of such a pallet under load Transport rollers, rollers or flange rollers, as well as a deposit by stacking, or in high-bay warehouses without a central cross member.

The composition of the palette listed here from several individual parts guarantees replacement in the event of impairing damage of the corresponding individual part - mostly lower part - and therefore a far-reaching one Reuse or increasing the service life of the entire pallet.

Besides that, from the use of the material plastic for this already well-known advantages of low weight and constant weight in border traffic.

Are emphasized on the basis of the choice of material and the constructive Design that here neither a split or break off of edges automatically or can be done recklessly, so that in addition to the economic, given advantage security concerns are also better guaranteed. There is a more rational one Marking and labeling without additional printing in that corresponding, interchangeable font duplicates in the corresponding molding tool can be attached1 another advantage, corresponding to a practical requirement in connection with the use of a composite plastic for a stacking plate is due to the roughened contact surface with corresponding grooves or cross grooves, which prevents the load from slipping. Equally offers itself the arrangement of a rimmed bead on the support surface against a slipping load at. Both options ensure greater security for the load in Total area in which stacking plates are used.

An embodiment of the subject matter of the invention and its detailed details are shown in the respective drawings. It shows: 1 shows the stacking plate in an assembled, perspective illustration. s shows an appropriate design of the individual parts from the upper part 1 with the openings 2 and three identical lower parts 3, otherwise with a smooth support surface 4 Mistake.

Fig. 2 in a perspective view seen from below in the same way the three identical lower parts 3 in connection with the upper part 1. Furthermore, one is smooth, unribbed installation and loading surface 5 can be seen.

Fig. 3 shows a section of the connection point of lower part 3 and Upper part 1, in particular the groove 6 and associated tongue 7 in a crossed design.

Figure 4 is an intersection of the composite sandwich visualized is here the large-pored, voluminous plastic 8 of the molded body of the lower part 3 and upper part 1, likewise the cover layer 9 consisting of a hard resin, furthermore the reinforcement laminate in the form of a mat 10 or chips 10, such as also the hardening rank 11.

5 shows the grooves 12.

Fig. 6 shows the crossed grooves 12e. Fig. 7 shows a section of the edging bead 13.

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Claims (1)

S c h u t z a n s p r ü c h e 1. Stacking p] atte -Halette- made of plastics consisting of an upper part 1 and preferably three identical lower parts 3 d a d ii r c h g e k e n n n z e i c h n e t that the upper part 1 and also the same Lower parts 3 initially shaped from a, large-pored, voluminous plastic ; - preferably a hard foam plastic - and with a heavy-duty, hard plastic 9 - preferably made of a plastic resin - coated in its entirety in which additional reinforcement laminates in the form of rats 10 or schnitzel 10 are introduced 2. Stacking plate made of composite plastic according to claim 1 d a D u r g e k e k e nn n z e i n e t that in the required places of the upper part 1 and the three identical lower parts 5, a continuous reinforcement strand 11 -preferably made of fiberglass, which is partially made of molded plastic for the purpose of fixation 3 included, but mostly embedded in the hard plastic cover layer 9 will. 3. Stacking plate made of composite plastic according to claim 1 and 2 d a d It is not stated that the upper part 1 of this stacking plate is not Contains openings 2, so the contact surface 4 is completely smooth. 4. 3 stacking plate made of composite plastic according to claims 1 and 2 and 3 d a d u r c h e k e n n n z e i c h n e t that the bearing surface 4 of the upper part 1 in whole or in part -preferably edging- with a roughened surface is provided in the form of longitudinal grooves 12 or crossed longitudinal grooves 12 '. 5. Stacking plate made of composite plastic according to Claim 1 and 2 and 3 d u r c h e k e n n n z e i c h n e t that the upper part 1 with a rimmed Bead 15 of the support surface 4 is provided.