EP3337735B1 - Pallet container - Google Patents

Description

The invention relates to a pallet container for storage and transport of particular flammable or flammable liquid products with a thin-walled rigid inner container made of thermoplastic material, which has a screw cap closable upper filler neck and, if necessary, a frontally arranged in the bottom area sampling pipe. With attached removal fitting, with a plastic inner container as a support jacket tightly enclosing tubular frame made of welded tubes together and with a bottom pallet on which the plastic container rests and with which the pipe grid frame is firmly connected, wherein the plastic inner container is enclosed within the pipe grid frame of a fire-resistant insulating mat. The present invention equally relates to pallet containers without bottom-side removal fittings, in which e.g. the sampling nozzle is welded shut or no sampling nozzle is present or provided.

State of the art:

A generic pallet container is from the DE 197 47 690 A1 (Sotra) known, which is characterized by a fire-retardant construction and should have a sufficient fire resistance. For this purpose, a thin-walled thermal insulation is arranged in this pallet container between plastic inner container and lattice cage, which consists of cardboard and aluminum foil. This plate-shaped insulation should also be used at least in steel pallets between inner container subfloor and pallet topsoil. The side facing the plastic container side of the insulating layer is made of cardboard and the grid frame associated with the insulating layer should be made of aluminum, the aluminum layer is to serve as a heat shield and heat dissipation, while the cardboard layer should cause an insulating effect by difficult heat transfer. The insulating layers of cardboard and aluminum can additionally between weather-resistant outer layers of plastic, z. As polyethylene be arranged. A disadvantage of this known embodiment is that the bottom-side removal fitting and the entire inner container topsoil with filler neck and screw cap remains freely and openly accessible and these components are thus exposed to the flames of an adjacent fire completely unprotected. As a result, such a pallet container with insufficient flame protection only very briefly withstand the effects of an externally acting fire.

In the DE 101 61 693 A1 (Sch-Pro) discloses a similar pallet container with fire protection equipment, in which between inner container and lattice frame consisting of metal sheets fire protection jacket is arranged. Furthermore, an additional fire and heat insulation is provided between the fire wall and inner container, which also covers the top and bottom of the plastic inner container. The plastic inner container is also surrounded by a grid-like sheath of thin metal wire to dissipate electrical charges. The fire and heat insulation consists of a 2 mm thin fiberglass fleece layer (glass wool fire protection material). In the metal sheets of the fire wall and the underlying insulating layer, ie in the cover for the inner container topsoil and the front pallet container wall, corresponding recesses for unimpeded access to the upper filler neck with removable screw cap and the bottom-side removal fitting are formed. The recess for the lower removal fitting is closed by a fold-down sheet metal lid to protect them.

This known pallet container is designed to comply with the NFPA-30 fire safety regulations for the storage of flammable and flammable liquids monitored by Underwriters Laboratories (UL) and is designed to keep the inner blister at fire for at least 20 minutes (with the assistance of one Sprinkleranlage) protect against damage or leakage of the liquid filling material.

In this embodiment, however, is disadvantageous that the screw cap on the upper filler neck is completely free and unprotected. During a fire test, it was found that the sheet metal parts used in the fire protection jacket distort and deform under external heat in such a way that gaps form at the abutting edges and between the sheet metal flap and the front metal sheet, through which heat and flames can penetrate. As a result of the flames reaching the lower removal area, the plastic valve began to burn and, as a result, already occurred Leaks after 10 minutes. This known construction of a fireproof pallet container also requires a complex and costly production and assembly with insertion of the additional components of the sheet metal casing including the upper cover sheet metal plate. Also, the blow-molded plastic inner container is electrically isolated from the grid frame and the bottom tray by the glass fiber insulation, so that a lattice-like wrapping of thin metal wire is required as an electrical connection for discharging electric charges.

It is an object of the present invention to further develop a generic pallet container with flame retardant equipment such that the existing disadvantages of the prior art are overcome and an improved and cheaper version is made available to the special customers of this particular product.

Solution: This object is achieved with the special features of patent claim 1. The features in the subclaims show further advantageous design possibilities of the pallet container according to the invention.

Due to the fact that the fire protection insulation mat on all sides, d. H. from all six sides, around the cube-shaped plastic container, also in front of its upper screw-lid region and bottom-side product removal region, and the adjacent side edges of the individual wall sections of the fire-resistant insulating mat in the four vertical right-angled corner regions and in the horizontal upper and lower orthogonal corner areas along the side edges of the plastic inner container overlap a piece is ensured in a simple but safe way that the heat-sensitive inner container made of thermoplastic material is protected at any point from direct flame exposure, wherein in the fire-resistant insulating mat in the area around the screw cap for the upper filler neck and in the area around the optionally. Attached removal fitting in each case an openable and resealable overlapping cover flap is formed, whereby the screw cap and, if necessary, the removal fitting fully covered and accessible at all times.

In an advantageous embodiment of the invention, it is provided that the four separate blank parts of the fire protection insulation mat for the four side walls of the plastic inner container with their respective overlapping overlapping strips consist of two equal and two different sized sections, with their attached overlapping strips are formed so large that - waiving a separate insulating mat section for the top floor of the plastic inner container - a complete overlapping coverage of the top floor takes place together with the filling opening. In this case, the two equal sized blank parts of the fire protection insulation mat for the two longer side walls of the plastic inner container each have a hanging overlap strip with a width of about 100 mm to 450 mm, preferably about 300 mm, in a simple way as a wide Overlapping strip to cover the top of the plastic inner container from the top of the top of the topsoap are designed to be foldable.

A further embodiment of the invention provides that the two differently sized blank parts of the fire protection insulation mat for the two shorter side walls of the plastic inner container with two different width overlap strips are provided as cover flaps for the topsoil of the inner container, wherein the rear blank part of the fire protection insulation mat a Overlapping strip with a width of about 300 mm to 550 mm, preferably about 450 mm, and the front side blank part of the fire protection insulation mat has an overlap strip with a width of about 1100 mm to 600 mm, preferably about 850 mm.

For the protection of the plastic inner container in the lower area of the protected against external flame Palettencontainers the blank part for the bottom surface of the plastic inner container is provided on all four side edges, each with an overlap strip, only the two opposite narrow overlap strips on the long side edges of the inner container a have the same width of about 50 mm to 125 mm, preferably about 75 mm. The width of the respective overlapping strips and cover flaps is always measured at right angles from their connecting line (bent edge) with the respective flat blank section.

The overlapping strip of the blank parts of the fire-resistant insulating mat is of great importance in this invention. For this purpose, it is provided in a further embodiment that the blank part for the bottom surface of the plastic inner container at the shorter rear side edge of the inner container overlap strip with a width of about 100 mm to 200 mm, preferably about 150 mm, and at the shorter front Side edge of the inner container has an overlap strip with a width of about 100 mm to 300 mm, preferably about 200 mm, said overlapping strip is interrupted in the middle and provided with a recess for access to the removal fitting. In order to protect the removal fitting safely against unwanted heat, the invention provides that on the underside of the blank part for the bottom surface in front of the recess in the overlap strip on the shorter front side edge of the inner container, a rectangular portion of the fire protection insulating mat is sewn, with the Recess for the removal fitting at the side edges is completely overlapping coverable.

In order to meet various requirements, the fire-resistant insulating mat is expediently formed in two layers and has for this purpose an outer heat-resistant textile fabric layer and an inner layer made of heat-resistant fiber fleece. In this case, the outer textile fabric layer is equipped with a metal powder-containing polyurethane coating, which is formed by a filling with aluminum powder electrically conductive (dissipative).

To derive electrical charges from the surface of the plastic inner container, a direct contact must be made with this to the outside, including the closable overlapping cover flaps of the fire protection insulation mat for the upper screw cap and the lower removal fitting also inside equipped with the electrically conductive textile fabric layer are. This also makes the handling of the cover flaps more pleasant because you do not come with your hands directly in contact with the inner, fiberglass-containing fiber fleece of the fire protection insulation mat.

For applications with normal requirements, it has been found for the thermal protection of the pallet container thus equipped against the effects of heat of a blazing fire, that it is sufficient if the inner nonwoven layer and the outer fabric layer of the fire protection insulation mat for a one-sided short-term (less than a minute ) Temperature load of at least about 600 ° C are designed. Accordingly, it is provided in the same cost-effective manner that the inner non-woven layer and the outer textile fabric layer of the fire-resistant insulating mat for a one-sided permanent (over five minutes) temperature load of about 550 ° C are designed.

For extreme applications with extreme heat protection requirements, the inner fleece layer and the outer fabric layer of the fire-resistant insulation mat can be designed for a one-sided brief (under one minute) temperature exposure of about 1600 ° C and for a one-sided lasting (over five minutes) Temperature load of 1200 ° C be designed.

In an embodiment of the invention, it is expediently provided that the fire-resistant insulating mat has a total thickness with outer textile fabric layer and inner nonwoven layer between 5 mm to 8 mm, preferably 7 mm, wherein the thickness of the outer fabric fabric layer only 1 mm to 2 mm , preferably about 1.5 mm. The overlapping strips according to the invention with double wall thickness of the individual wall sections of the fire-resistant insulating mat are on the one hand in the four vertical corner areas of the grid frame or the plastic inner container and on the other horizontally circumferentially at the top and bottom of the grid frame. Along the side edges on the 90 ° bends of the plastic inner container, the distance to the pipe bars of the lattice frame is greater than in the flat side walls of plastic inner container and grid frame, so that in these corner areas between plastic inner container and outer grid frame advantageously sufficient There is room for the double-layered overlapping strips of the fire-resistant insulating mat.

According to a further embodiment of the invention, the front and / or the rear side wall part of the fire protection insulation mat is designed to be extended upwards such that it is above the screw cap laid in the manner of a cover flap or in the direction of the opposite side wall part superimposed, whereby a far-reaching overlap of the upper insulating mat parts is achieved and the screw cap is completely and safely covered. The front and the rear cover flap are each passed under the two transverse members of the lattice frame and are fixed by them on the top bottom of the plastic inner container. Preferably, the front cover flap is made a bit longer than the rear cover flap. The rear - slightly shorter - cover flap extends almost to the upper filler neck. The front cover, which covers the screwed on the filler neck screw cap, extends approximately to the rear Crossbeam. To close the fire-resistant insulating mat, the end or the front edge of the front - slightly longer - cover flap is pushed under the front edge of the rear cover to about the rear cross member, so that the front cover is covered by a piece of the rear cover, or the two cover flaps overlap by a good distance.

As a safe protection of the lower removal fitting a separate rectangular blank portion is provided for complete coverage or coverage of the bottom recess for access to the removal fitting in the front side wall blank part of the fire protection insulation mat, which is larger than the rectangular recess formed for the removal fitting , wherein the separate blank part of the fire-resistant insulating mat is sewn with its lower edge on the bottom side of the fire-resistant insulating mat below the plastic inner container, so that it is designed as DeccKlappe from bottom to top before the recess hinged and clamped behind a horizontal grid bar. This prevents certainty that in the event of fire, flames can enter the free space around the doghouse, which - as was usual with known pallet containers of this type - the projecting into the free space, made of plastic extraction valve and its handle quickly melt and burn.

By the above-indicated features of the present invention, it is possible to form a generic pallet container with flame retardant device such that it is easier and cheaper to produce, consists of fewer components and is lighter in weight, the tightness of the filled plastic inner container at least for a duration of flame exposure of about 25 minutes is guaranteed.

Further advantages of the present inventive solution are in particular: The inside fiberglass-containing fiber fleece layer is usually non-conductive. In the present construction, the antistatic / conductive coated fabric of the outer layer is also applied on the inside in the region of the filler neck and the removal fitting and thus in direct contact with the plastic inner container. Thereby a grounding of the dischargeable blower is ensured via the conductive inner layer to the fabric outside and thus to the mesh basket or the bottom pan.

Figur 1

in perspektivischer Ansicht einen erfindungsgemäßen Palettencontainer mit Feuerschutz-Isoliermatte

Figur 2

in Querschnitts-Teilansicht den Aufbau einer zweischichtigen Feuerschutz-Isoliermatte,

Figur 3

in perspektivischer Ansicht die einzelnen Wandungsteile mit äußeren Überlappungsbereichen für die Feuerschutz-Isoliermatte,

Figur 4

in perspektivischer Ansicht die einzelnen Wandungsteile in zusammengesetzter kubischer Form bei geöffnetem Oberboden,

Figur 5

in perspektivischer Ansicht die einzelnen Wandungsteile in zusammengesetzter kubischer Form bei geschlossenem Oberboden,

Figur 6

in Draufsicht die einzelnen Zuschnittsteile mit äußeren Überlappungsbereichen für den Unterboden, Oberboden und die Vorder- und Rückwandung,

Figur 7

in Draufsicht die einzelnen Zuschnittsteile mit äußeren Überlappungsbereichen für die zwei gegenüberliegenden Seitenwandungen,

Figur 8

eine Draufsicht auf die Abdeckklappe für die untere Entnahmearmatur,

Figur 9

eine perspektivische Ansicht außenseitig auf eine separate Schutzhaube für die untere Entnahmearmatur und

Figur 10

eine perspektivische Ansicht innenseitig von unten auf die separate Schutzhaube für die untere Entnahmearmatur

The invention will be explained and described in more detail with reference to an embodiment schematically illustrated in the drawings. Show it:

FIG. 1

in perspective view of a pallet container according to the invention with fire protection insulation mat

FIG. 2

in a cross-sectional partial view of the structure of a two-layer fire-resistant insulating mat,

FIG. 3

a perspective view of the individual wall parts with outer overlapping areas for the fire-resistant insulating mat,

FIG. 4

in perspective view, the individual wall parts in a composite cubic shape with the topsoil open,

FIG. 5

in perspective view, the individual wall parts in a composite cubic shape with closed topsoil,

FIG. 6

in plan view, the individual blank parts with outer overlapping areas for the subfloor, topsoil and the front and rear walls,

FIG. 7

in plan view, the individual blank parts with outer overlap areas for the two opposite side walls,

FIG. 8

a top view of the cover for the lower removal fitting,

FIG. 9

a perspective view on the outside on a separate protective cover for the lower removal fitting and

FIG. 10

a perspective view inside from below on the separate protective cover for the lower removal fitting

In FIG. 1 is designated by the reference numeral 10, an inventive pallet container (UL-IBC) with a filling volume of 1000 I, with a (not apparent) thin-walled rigid inner container made of thermoplastic material for storage and the transport of particularly dangerous flammable liquids, with a plastic container as a support jacket tightly enclosing tubular lattice frame 12 and a bottom pallet 14 on which the plastic container rests and with which the support shell is firmly connected. The pipe frame 12 (outer container) of the pallet container 10 consists of welded together vertical and horizontal tubes 16, 18. To obtain a closed outer container, the circulating horizontal tubes 18 are connected to each other. The bottom pallet 14 can be designed as a steel pallet, as a composite pallet (tubular steel frame with plastic feet) or as a special heat-resistant wooden pallet. In this pallet container 10 - dispensing with an all-round metal jacket cladding - a fire-resistant insulating mat 20 is arranged as a complete enclosure directly between the pipe frame frame 12 and the plastic inner container. The fire-resistant insulating mat 20 consists of several, preferably five, different sized sections, which overlap in the corner regions of plastic inner container and pipe grid frame 12 each by a piece. This overlap or overlap of the adjoining blank parts of the fire protection insulating mat 20 should be at least about 20 mm to 120 mm, preferably about 75 mm. These overlapping strips 22 formed in this way extend in the vertical direction at the upper and lower edges of the tubular lattice frame 12 or the plastic inner container in the horizontal direction and in the rectangular corner regions of the adjoining side walls of the tubular lattice frame 12.

The screw cap screwed onto the filler neck centrally located in the upper bottom of the inner container is covered by an upper large cover flap 24 and the lower removal fitting is covered by a smaller cover flap 26, so that the plastic inner container is completely enveloped and completely packed, and in the case of fire no flames and direct heat (hot air) can get to him. The sections of the fire-resistant insulating mat 20 are not sewn together, because this would be too laborious and costly. They are simply set in the pipe frame 12 and clamp themselves in the overlap strip 22 itself until the inner container is used and all sections are clamped between inner container and pipe rack frame. The only exception is the small rectangle section for covering the removal fitting, which is firmly sewn to the bottom section 32. This small cover flap 26 is to its fixation in the closed State only pushed behind the first transverse grid tube rod (horizontal rod) above the sampling fitting and thereby clamped. Upon access to the lower removal fitting, the cover flap 26 can simply be pulled out by hand behind the transverse tube rod and put behind it again for closing. The long upper cover flap 24 for covering the screw cap on the upper filler neck is plugged in the case of closure under the front edge of the opposite, unfolded from the rear wall section 42 on top of the plastic inner container overlap strip 44 to a transversely transverse cross member 48 and thereby fixed. To open or to expose the screw cap, this cover flap 24 is pulled out from under the overlap strip 44 and pushed back after filling the inner container and screwing the screw again under the opposite overlap strip 44 and clamped.

FIG. 2 shows in a circular section the structural structure of the fire-protective insulating mat 20, which is here formed in two layers with an outer textile fabric layer 28 and an inner fiber fleece layer 30: The outer fabric fabric layer 28 is provided with a polyurethane coating. The coating is enriched with a metal powder. The metal powder is preferably made of aluminum pigments. This surface coating of polyurethane with aluminum powder is applied on the one hand for high heat radiation. In addition to water-repellent properties, this polyurethane coating also has antistatic properties (30-50 GΩ-100 V), as a result of which the UL-IBC according to the invention is suitable for EX applications and can be certified with the appropriate EX approval. The textile fabric used in the outer textile fabric layer 28 is made of high-quality partially textured and twisted yarns and is outstandingly suitable for thermal and acoustic insulation with high temperature resistance. It is available in a low-cost version for medium-high claims with short-term temperature load of about 600 ° C and permanent temperature load of about 550 ° C under the name "isoTEX" freely available on the market and is commonly used as a heat protection fabric z. B. for welding curtains and fire blankets.

For the highest temperature loads with a short-time load of approx. 1600 ° C and permanent temperature effect of approx. 1200 ° C, a special textile fabric is freely available on the market and available. This high-temperature-resistant "silTEX" protective fabric was specially developed for long-term and long-term use in the high temperature range and is non-flammable. It is particularly suitable as a heat protection and insulating fabric for the highest temperature stress and provides excellent protection, even against liquid metal splashes and glowing slags. In the inner nonwoven fabric layer 30, the nonwoven fabric used is made of mechanically needled silicate glass fibers having excellent insulation properties and high temperature resistance. The fleece mats are very flexible and are used industrially for insulation or insulation; they are available on the market under the name "isoFLEX" for these purposes.

In FIG. 3 all six individual wall sections are shown with the outer overlap strips 22 of the fire protection insulation mat. Base part is a large bottom wall part 32 with dimensions of 1000 mm x 1170 mm with laterally revolving folded overlap strips 22 on all four side edges, wherein the front, slightly higher overlap strip 34 has a recess 36 for access to the removal fitting. For overlapping coverage of this recess 36 and to protect the removal fitting, the small rectangular cover flap 26 is provided, which is firmly sewn below the bottom wall portion 32. Furthermore, the fire-resistant insulating mat comprises two opposing sections 38 for the longer side walls, each with large overlap strips 40 at the top. For the shorter side walls, ie for the rear rear wall, a section 42 is provided with a large slightly trapezoidal overlap strip 44 at the top and for the front wall a rectangular section 46 with a very large slightly trapezoidal overlap strip at the top, this very large overlap strip as the upper large Cover flap 24 is referred to, since it is folded over the screw cap of the upper filler neck.

For better understanding is in FIG. 4 shown in a perspective view, as the individual sections of the fire protection insulation mat 20 in composite cubic shape with open upper floor, or with unfolded upper overlap strips 40, 44 and unfolded upper cover flap 24 in the corner areas with the Overlap overlap strips 22 (without enclosing tubular lattice frame of the pallet container).

In FIG. 5 is the cubic shape of the assembled sections of the fire-resistant insulating mat 20 with closed upper floor or with folded upper overlap strips 40, 44 and retracted upper cover flap 24 can be seen. In this case, the front of the upper cover flap 24 is covered by a piece in the order of about 50 mm to 100 mm from the wide upper overlap strip 44.

Of course, the assembly of the individual sections of the fire-resistant insulating mat 20 does not take place in free space, but gradually into the pipe grid frame 12 of the pallet container. First, the bottom wall portion 32 is placed symmetrically on the surface of the bottom pallet 14 and the small cover flap 26 for the removal fitting is pulled out between the two central vertical bars. The slightly longer overlap strips 34 of the front wall and the rear wall are raised from the inside against the pipe bars of the lattice frame, then the two narrower overlapping strips 22 of the longer side edges are also raised from the inside against the pipe bars. Of the four side walls then the front wall portion 46 of the fire-resistant insulating mat 20 is suspended in the lattice frame 12, wherein the lateral overlap strips 22 are bent in the vertical corner areas from the inside against the adjacent side walls of the tubular lattice frame such that each of the outermost vertical rod of the adjacent side wall is covered by at least 10 mm. The upper large cover flap 24 at the top of the front wall 46 initially remains free to the outside. Thereafter, the opposite portion of the fire-resistant insulating mat for the shorter rear wall of the plastic inner container is inserted into the pipe frame 12, wherein the lateral overlap strips 22 are bent in the vertical corner areas equally from the inside against the adjacent side walls of the pipe grid frame such that each of the outermost vertical rod the adjacent side wall is covered by at least 10 mm. To complete the two opposite longer side walls are now used and pressed from the inside against the pipe grid frame and at the side edges in the vertical corner areas from the inside against the overlap strip 22 of the front wall 46 and rear wall 42. Finally, the plastic inner container is inserted and the upper wide overlap strips 40, 44 and the upper large cover flap 24 are folded onto the top bottom of the inner container.

On the upper floor of the inner container, two upstanding eyelets are formed laterally next to the filler neck or the screwed-on screw cap, which are inserted through specially provided slots in the upper overlap strip 44 and the Abdeccklappe 24 of the fire protection insulation mat 20 so that they protrude upwards ( please refer Fig. 1 ). By this upstanding eyelets two transverse metal rods, the so-called cross members 48 are inserted through and screwed to the upper outer edge of the pipe grid frame 12. These crossbeams 48 are used for secure fixing and holding down the overlapping four sections of the fire-resistant insulating mat 20 (overlapping strips 40, 44 and large cover flap 24).

In FIG. 6 and FIG. 7 are once again the individual blank parts from the inside with outer overlap strips for the subfloor, the front and rear walls and for the two opposite side walls shown in more detail. Thus, in the shorter upper cover flap or the overlap strip 44 at the upper edge, a region 50 is executed dotted gray; Similarly, such a dotted gray area 50 at the bottom of the floor insulating mat 32 is performed directly in front of the recess 36 in the overlap strip 34 and almost the entire bottom of the large cover flap 24 is drawn as a dotted gray area 50. These gray dotted areas 50 symbolize that here also the inside (or underside) of the fire-resistant insulating mat is covered with the silver-colored outer textile fabric layer (28).

In the FIG. 8 shown small cover flap 26 is covered over the entire area as a gray dotted area 50 with the electrically conductive textile fabric layer. At the bottom of the attachment seam is still recognizable, by means of which the cover flap 26 is sewn to the bottom portion 32. These gray dotted areas are often handled by the operator in the handling of the generic pallet container by hand, such. B. when opening and closing the upper cover flap 24 for unscrewing the screw cap when filling the pallet container and when opening and closing the lower cover flap 26 for operating the sampling valve for filling removal from the pallet container. The silver textile fabric layer In particular, without protective gloves much more pleasant to touch than the fiberglass fleece on the inside of the fire-resistant insulation mat. Furthermore, these inside areas 50 are very important for direct contact with the plastic inner container with the electrically conductive textile fabric layer for EX approval of the pallet container, because they ensure the safe discharge of electrical charges from the surface of the plastic inner container and prevent unwanted dangerous sparking.

In the shorter upper cover flap or the overlap strip 44 (FIG. Fig. 6 ) as well as in the large cover flap 24 - drawn out oval to the left - two sewn slots 52 are shown, through which the eyelets for the cross members are inserted in the finished assembled pallet container.

From the previous description and the figures representations it is clear that in the corner areas on the top floor of the inner container each have a fairly large area is overlapped and thus there is a double wall thickness of the fire protection insulation mat. For this purpose, the overlapping strips 40, 44, 24 of the fire-resistant insulating mat on the upper bottom of the plastic inner container designed significantly wider, so that in particular the corner regions of the inner container are better protected from above. On the one hand, this is very useful because there is still an air bubble at the top of the inner container even when completely filled with liquid and the liquid can not carry off any heat dissipation from the surface wall of the inner container. On the other hand, because in a stacking the existing plastic corner feet can start to burn and can represent an additional source of fire or an additional source of heat.

For special protection of projecting from the lower sampling nozzle removal fitting is provided in an advantageous manner that within the indentation in the lower front wall of the plastic inner container (doghouse) behind the lower small cover flap 26 a cup-shaped heat protection cover made of the same material as the fire-resistant insulating mat - Is placed as a protective cover 54 around the removal fitting or slipped over so that it is almost filled the space within the indentation around the patch removal fitting behind the cover 26 and prevented so that hot air can reach the also made of plastic removal fitting. For this purpose, the guard also pillow-like or be designed voluminous. In FIG. 9 and FIG. 10 the separate additional heat protection cover 54 is shown in two different perspective views. This protective cover 54 is particularly in long withdrawal nozzle or long removal fitting housings such. B. used in a Camlock connection.

Conclusion: Basically, a "flameproof" insulation of the outlet area is very important. This has shown a 15 minute fire test with a known UL IBC of the prior art mentioned above, in which the fire protection insulation had not remained tight because the protective sheet metal parts had ragged unevenly. In addition to the flame-tightness, it must also be ensured that the approximately 900 ° C hot combustion air can not penetrate into the doghouse. This could be realized in a 45 minutes fire test with a pallet container according to the invention with good overlap of the insulating mat parts without leakage. The individual pieces of tissue remain close together, they do not deform, so that even the handle of the sampling valve remained intact. Increasing the safety of the removal fitting and handle can be achieved in special cases by using a separate protective cover. <B><u> list of reference numerals </ u></b> 10 pallet container 50 Part surfaces with outer textile fabric layer 12 Tubular lattice frame 52 Sewn slits 14 bottom pallet 54 guard 16 vertical pipe bars 18 horizontal pipe bars 20 Fire-insulating 22 overlapping strips 24 upper large cover flap (20) 26 lower small cover flap (20) 28 outer textile fabric layer 30 inner fiber fleece layer 32 Floor wall part (20) 34 front higher overlap strip (32) 36 Recess (32) 38 Sidewall sections (20) 40 upper higher overlap strip (38) 42 Rear wall section (20) 44 large overlap strips (42) 46 Front wall section 48 crossbeam

Claims (18)

1. Pallet container (10) for storing and transporting in particular flammable or easily ignitable liquid filling materials, having a thin-walled rigid internal container made from a thermoplastic plastics material, which has an upper filling connector that is closed off by a screw cap, and optionally a retrieval connector that is disposed in the forward base region and optionally has an attached retrieval fitting, having a tubular lattice frame (12) that as a supporting jacket tightly encloses the plastics-material internal container, and having a base pallet (14) on which the plastics-material internal container bears and to which the tubular lattice frame (12) is fixedly connected, wherein the plastics-material internal container within the tubular lattice frame (12) is laterally enclosed by a fire-protection insulation mat (20) that is composed of a plurality of composite parts,
   characterized in that
   the fire-protection insulation mat (20) is disposed on all sides around the plastics-material internal container, also in front of the lid and base regions of the latter, wherein mutually adjacent lateral edges of the individual composite parts of the fire-protection insulation mat (20) overlap by a margin in the four vertical rectangular corner regions and in the horizontal upper and lower rectangular corner regions along the lateral edges of the plastics-material internal container, wherein in the fire-protection insulation mat (20) in the region about the screw cap for the upper filling connector, and in the region about the optionally attached retrieval fitting, in each case one overlapping cover flap (24, 26), capable of being opened and of being reclosed, is provided, on account of which the screw lid and optionally the retrieval fitting are completely covered and at all times accessible.
2. Pallet container according to Claim 1,
   characterized in that
   the four separate blank panels of the fire-protection insulation mat (20) for the four side walls of the plastics-material internal container, with the respective affixed overlapping strips thereof, are composed of two equally sized and two dissimilarly sized composite parts, wherein the affixed overlapping strips thereof are configured to be of a such size that, while dispensing with a separate insulation-mat composite part for the upper base of the plastics-material internal container, large-area overlapping covering of the upper base, including the filling opening, takes place.
3. Pallet container according to Claim 2,
   characterized in that
   the plastic-material internal container has two longer side walls, wherein
   the two equally-sized blank panels of the fire-protection insulation mat (20) for the two longer side walls of the plastics-material internal container each have one affixed overlapping strip having a width of approx. 100 mm to 450 mm, preferably of approx. 300 mm, the latter being configured as wide overlapping strips for coverage by laterally folding onto the upper base.
4. Pallet container according to Claim 2,
   characterized in that
   the plastics-material internal container has two shorter side walls, wherein
   the two dissimilarly sized blank panels of the fire-protection insulation mat (20) for the two shorter side walls of the plastics-material internal container have two dissimilarly wide overlapping strips as cover flaps for the upper base, wherein the rearward blank panel of the fire-protection insulation mat (20) has an overlapping strip having a width of approx. 300 mm to 550 mm, preferably of approx. 450 mm, and the front-side blank panel of the fire-protection insulation mat (20) has an overlapping strip having a width of approx. 1100 mm to 600 mm, preferably approx. 850 mm.
5. Pallet container according to Claim 1,
   characterized in that
   the plastics-material internal container has two long and two shorter lateral edges, wherein
   the blank panel for the base face of the plastics-material internal container on all four lateral edges each is equipped with one overlapping strip, wherein only the two opposite narrow overlapping strips on the long lateral edges of the internal container have an equal width of approx. 50 mm to 125 mm, preferably of approx. 75 mm.
6. Pallet container according to Claim 5,
   characterized in that
   the blank panel for the base face of the plastics-material internal container on the shorter rearward lateral edge of the internal container has an overlapping strip having a width of approx. 100 mm to 200 mm, preferably of approx. 150 mm, and on the shorter front-side lateral edge of the internal container has an overlapping strip having a width of approx. 100 mm to 300 mm, preferably of approx. 200 mm, wherein this overlapping strip is centrically interrupted and provided with a clearance for accessing the retrieval fitting.
7. Pallet container according to Claim 5 or 6,
   characterized in that
   on the lower side of the blank panel for the base face in front of the clearance in the overlapping strip on the shorter front-side lateral edge of the internal container, a rectangular composite part of the fire-protection insulation mat (20) is sewn, by way of which rectangular composite part the clearance for the retrieval fitting on the lateral edges thereof is coverable in a completely overlapping manner.
8. Pallet container according to at least one of preceding Claims 1 to 7,
   characterized in that
   the fire-protection insulation mat (20) is configured with two layers, to which end said fire-protection insulation mat (20) has an external heat-resistant woven-fabric textile layer (28) and an internal layer made from a heat-resistant fibrous non-woven (30).
9. Pallet container according to Claim 8,
   characterized in that
   the external woven-fabric textile layer (28) is finished with a metal-powder-containing polyurethane coating which by way of a filling with aluminum powder is configured so as to be electrically conductive.
10. Pallet container according to Claim 9,
    characterized in that
    the closable overlapping cover flaps (24, 26) of the fire-protection insulation mat (20) for the upper screw lid and for the lower retrieval fitting are also equipped on the internal side with the electrically conductive woven-fabric textile layer (28).
11. Pallet container according to one of preceding Claims 8 to 10,
    characterized in that
    the internal non-woven layer (30) and the external woven-fabric textile layer (28) of the fire-protection insulation mat (20) are configured for a unilateral short-term temperature stress of at least approx. 600°C.
12. Pallet container according to Claim 1,
    characterized in that
    the internal non-woven layer (30) and the external woven-fabric textile layer (28) of the fire-protection insulation mat (20) configured for a unilateral short-term temperature stress of approx. 1600°C.
13. Pallet container according to one of preceding Claims 8 to 12,
    characterized in that
    the internal non-woven layer (30) and the external woven-fabric textile layer (28) of the fire-protection insulation mat (20) are conceived for a unilateral long-term temperature stress of approx. 550°C.
14. Pallet container according to one of preceding Claims 8-10 or 12,
    characterized in
    that internal non-woven layer (30) and the external woven-fabric textile layer (28) of the fire-protection insulation mat (20) is conceived for a unilateral long-term temperature stress of 1200°C.
15. Pallet container according to one of preceding Claims 8 to 14,
    characterized in that
    the fire-protection insulation mat (20), including the external woven-fabric textile layer (28) and the internal non-woven layer (30), has an overall thickness between 5 mm and 8 mm, preferably of 7 mm, wherein the thickness of the external woven-fabric textile layer (28) is only 1 mm to 2 mm, preferably approx. 1.5 mm.
16. Pallet container according to one of preceding Claims 1 to 15,
    characterized in that
    the front and/or the rear side wall part of the fire-protection insulation mat (20) toward the top is configured so as to be extended in length in such a manner that said side wall part in the manner of a cover flap is configured to be placeable on top of the screw lid, and to be placeable in the direction toward the opposite side wall part, so as to be on top thereof, on account of which the screw lid is completely and securely covered.
17. Pallet container according to one of preceding Claims 1 to 16,
    characterized in that
    a separate rectangular blank panel is provided in order for a base-side clearance in the front side-wall blank panel of the fire-protection insulation mat to be completely superimposed for reliably protecting the lower retrieval fitting, said separate rectangular blank panel being larger than the rectangular clearance for the retrieval fitting, wherein the blank panel of the fire-protection insulation mat by way of the lower periphery thereof on the base side is sewn to the fire-protection insulation mat below the plastics-material internal container such that said blank panel of the fire-protection insulation mat as a cover flap is configured so as to be foldable from bottom to top in front of the clearance and fixedly clampable behind a horizontal lattice bar.
18. Pallet container according to one of preceding Claims 1 to 17,
    characterized in that
    within a recess in the lower front wall of the plastics-material internal container, below the cover flap (26) for the retrieval fitting, which is configured to be the smaller of the two cover flaps (24, 26), in the closed state, a bowl-shaped thermal-protection hood made from the same material as the fire-protection insulation mat is push-fitted as an additional separate protection cap (54) over the retrieval fitting.

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