DE2214171A1 - Process for the production of a plastic pallet for storing products and materials of various types, as well as a device for its use and a panel finished therewith - Google Patents

Description

PATENT LAWYERS

DR.-ING. KCC.7.R DJ.-L.-K ίθ. OTSJJ-RCCHTM-Sc. ■ ZZ IH I / I

. DIfL-PHYS.CR.GaSZS ^ · ';:. D :, ^v-P. :: YS.EIAECKUR
7STUTTGART-I ₁ Ui-ILANDSTR-Wc

NANlA BENVENUTO in Marsala (Trapani)

Process for the production of a pallet from plastic for storing products and materials of various types Type, as well as device for its application and thus finished plate.

The invention relates to a method for producing a Pallet or plate made from a piece of foam reinforced with wooden strips embedded in it, which pallet to be used for storing various products and / or materials, and is also referred to by the name lifting plate.

The invention also relates to a device for Application of the aforementioned process and the product made with it.

As is well known to those skilled in the art, the pallets are usually made for storing various products or materials made of wood and usually have a rescuer Support plate on which is supported by feet, which are so arranged are that the forks of a forklift truck the pallet either on two opposite sides (so-called pallet with Loading option from two sides) or on all four sides

209 8M / JM.G ^ -.ν

(Pa Lette with loading option from four sides) !metric tons.

Such wooden pallets are intended for return and theirs Main drawbacks are that they are relatively expensive and heavy and that they because of the nailing and their Tendency to absorb moisture for storage to a certain extent

are suitable.

In order to prevent these disadvantages, "bin-path pallets" are proposed been made from a plastic pressed ^ tiick exist.

Such "bin way pallets", which consist of a piece of plastic, have shown that their resilience is not always sufficient.

They then went over to the plastic with the pallets to reinforce embedded wooden strips *

In doing so, the technical problem emerged, like the ones mentioned Wooden strips are to be supported in the form, so that their supports do not take away any precious space from the foam, which the wooden strips should enclose on all sides so that there is perfect adhesion between foam and wood.

This problem is solved according to the invention in that a A large number of wooden strips are laid, which are of one! »And a shape that has the hollow shape of the pallet to be produced, go out vertically and put in the form a prepared and aged

Plastic is introduced together with steam, after which, after cooling, the finished pressed piece is deposited ..

In order to achieve a high load capacity, the mentioned Wooden slats parallel to each other and perpendicular to the pallet feet arranged.

These wooden strips also have a serrated profile to

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ORIGINAL INSPECTED

22H171

Increase their adhesion to the foam and they will be preferred made of a relatively flexible wood, e.g. fir, so that the deflections of the Participate in foam under load without being in it Internal ruptures arise.

These and other merlanals as well as advantages of the invention emerge from the following description of examples, which refers to the accompanying drawing which shows a mold according to the invention, the pallet made therewith and represents a further type of pallet embodied according to the invention.

Place in the drawing

1 shows a section through the said shape,

FIG. 2 is a top view of the form according to FIG.

3 is a perspective view from above of that with the form according to Fig.l and 2 manufactured pallet,

FIG. 4 is a perspective view of the pallet according to FIG in reverse position,

Fig. S is a perspective partial view of one of the reinforcement strips of the pallet,

Fig.ö a cross section through another according to the invention produced pallet along the drawing plane VI-VI according to Fig.7 and

Fig. 7. a plan view according to arrow A of FIG.

In Fig. 1 and 2 of the drawing, 10 denotes the invention

^{> O} overall hollow shape consisting of a base plate 11, from ο

a lower part 12 and an upper part 13, with basic

■

^ plate 11, lower part 12 and upper part 13 can be dismantled with one another ^ are connected. As a special feature of the plate ^ 11 go in the vertical direction and perpendicular to this a multitude of

number of fine spines 14, which are evenly spaced from each other in two parallel rows

ORIGINAL INSPECTED

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are arranged (Fig. 2),

As can be clearly seen from FIG. 1, the spikes 14 each have a threaded stem 15 and a threaded nut for attachment to the base plate 11 and their tip protrudes into the interior space between the lower and upper part of the hollow mold through the holes 17 recessed in the lower part 12.

On these tips are the wooden strips lS (Fig. 2 or Fig. 5) impaled, which have an SM tooth profile, so that their adhesion to the foam is increased, and which are preferably made of fir wood be produced «.

In the hollow shape executed in this way - after the aforementioned wooden strips are speared onto the tips of the spikes 14 - a prepared and deposited foam Iy, preferably foam polystyrene, together with steam in itself As is known, in the cavity between the lower and upper part of the mold (which of course has the same shape as the one to be produced Pallet): the molded piece is then cooled and deposited.

In Fig. 3 and 4 the pallet made with it is shown: it is designated as a whole with 20 and contains one level

21 ßjur support of the goods, below which three support feet 22, 2j, 24 go out, which run parallel to each other. i) he foot

22 extends along a center line of the pallet while the feet 2J, 24 along two opposite sides of the pallet run: these feet have relief blades 25 (Fig. 4). As you can see, the wooden strips 18 run parallel to one another and perpendicular to the feet, so that the pallet is considerably strengthened.

Of course, the mold 10 can also have the appropriate shape for manufacture a pallet with Vex loading from four sides

209844/0105

ORiGiNAL INSPECTED

/ 214171

or with a different training without being thereby changed something in the idea of the invention.

Figures 6 and 7 illustrate another manufactured according to the invention Lifting plate

This lifting plate is intended for receiving containers and is designated as a whole with the reference number 100 ; it also consists of a piece of expanded polystyrene

The lifting plate 100 has an octagonal plane 110 on which Bottom 120 three support feet 130, 140, 150 go out, which run parallel to each other; the foot 130 extends along a center line of the pallet, while the feet 140, 150 run along two opposite sides of the pallet. These feet 130, 140, 150 are tapered downwards and point Relief holes 100 on.

The foot 130 also has an opening for dumping the material 170 in the middle, which goes through this and through the plane 110. The opening 170 should of course be closed with a lock (not shown).

A peripheral rim 19O extends from the top I80 of the level 110 from which is grooved as shown at 200, des.sn groove to it is intended to accommodate a loading box specified with 210 in an easily removable manner.

A lift plate made in this way is preferred, however not exclusively intended to contain cardboard boxes with an octagonal cross-section compared to the usual cardboard boxes with a rectangular cross-section therefore have greater strength, because they have twice the number of edges. According to the invention 110 wooden strips 220 are embedded in the plate, the parallel to each other and perpendicular to the support feet 130, 140, 150 are arranged so that the construction of the lifting plate

20984 4/0105.

is strengthened.

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r.37 j ■■■■ ■■ "■ --V.« - ^ ■ '■■ - ORIGINAL INSPECTED

The wooden strips are designed in the same way as described in the first exemplary embodiment »

Advantages according to the invention can be summarized as follows sum up::

- The adhesion of the pointed spikes 14 is excellent Way the problem of how the wooden strips can be supported within the form and the foam only slightly ivaum detach;

- The manufacturing costs of the lifting plate are only jü / o the cost of a wooden plate of the same dimensions and performance;

- Nails that are otherwise intended for storage are completely eliminated products or materials could become harmful;

- the flattening plane is completely smooth and jointless (on the other hand, the best hen wooden panels made of collapsed ßrettern, between them Gaps can arise which are unfavorable for certain purposes);

- Since the liub plates according to the invention are absolutely moisture-proof , they can also be placed on damp or watery soils without concern for the materials, which is e.g. the storage of perishable goods such as sugar, starches, etc. is very important;

- A lifting plate produced according to the invention has the same Dimensions a much lighter weight than a wooden pallet, which makes it is easier to handle and cheaper to transport;

- It is practically shockproof $ because if a forklift truck causes more or less damage in the pallet when it is used for a long time, it does not become unusable as a result, however

209844/01 05

ORIGINAL INSPECTED

22 HI 71

a forklift truck crashing into a wooden pallet result in the breakage of boards in the pallet and make it unusable;

- it is absolutely flawless from the point of view of hygiene;

- the complete absence of nails avoids the damage caused by the saws for certain products and materials can arise

209844/0 10 5-

ORIGINAL! NSPECTEO

Claims (10)

Claims 1) Method of making a plastic pallet for storing products and materials of various kinds characterized in that the individual process operations initially involve the attachment of a plurality of wooden strips a plurality of spikes, which from a wall of a reproduce the desired shape of the pallet according to the invention Casting mold go out in the vertical direction, continue the introduction of a prepared and aged plastic together steam into the mold and finally cooling and depositing the molded piece. 2) Method according to claim 1, characterized in that polystyrene is used as the foam plastic 3) Device for applying the method according to claim 1, characterized in that it is a casting mold contains, which reproduces the shape of the pallet to be produced, as well as a multitude of spikes from a wall run out of said mold. 4) pallet, carried out according to the invention by means of the device according to claim 1 to 3, characterized in that it consists of a piece of polystyrene foam and has support feet that extend from its lower side, with mutually parallel, perpendicular to the support feet wooden strips embedded in this piece of polystyrene foam. 5) pallet according to claim 4, characterized in that a grooved peripheral rim extends from its upper side, which is intended to hold a container. 6) pallet according to claim 5, characterized in that it has a through hole for unloading the putty having material Ls contained in the container. 20984 ^ / 0105 7) pallet according to claim 5, characterized in that that it has an octagonal shape " 8) pallet according to claim 4, characterized in that that the said support feet are three in number and to each other are arranged in parallel, the middle one along a center line of the plate and the two lateral ones along two opposite sides of said plate run 9) Pallet according to claim 6 and 8, characterized in that the aforementioned unloading hole through the plate and the middle support leg goes through 10) pallet according to claim 4, characterized in that that the aforementioned styles sometimes have lightening holes. 2098 4 k / 0105