EP2727853A1 - Sheet product, in particular foldable sleeve for a pallet container, and method and device - Google Patents

Abstract

The sheet product has flap element mounted at hinge arrangement so that lid element is mounted in both limited lifting movement and pivoting movement. The hinge arrangement (8) is provided with a film hinge that is projected along the hinge axis. The hinge brackets of hinge arrangement are secured fixedly and guided relative to fastening location. The linearly movable hinge bracket is combined into hollow chamber. The stop portion is provided in hollow chamber to limit the linear movement of the hinge bracket. Independent claims are included for the following: (1) method for manufacturing folding wall ring; and (2) device for manufacturing folding wall ring.

Description

The invention relates to a surface product, in particular a Faltwandungsring, for a pallet container, with at least one surface part having a cutout which is closable by a movably mounted between a closed position and an opening position flap part, wherein for supporting the flap part, a hinge arrangement is provided which is designed such that the flap part is both limited liftable and pivotally mounted. The invention also relates to a method for producing such a Faltwandungsrings, wherein the Faltwandungsring is deep-drawn as at least one surface part in a twin-sheet process of two plastic sheets to a twin-sheet part and then with opposite side portions of the at least one surface part to the ring shape is joined together, and an apparatus for performing this method.

From the DE 29 09 136 A1 a pallet container is known which comprises a pallet base and projecting from this floor side walls. A side wall is provided with a recess which can be closed by a flap part. The flap part is provided on its opposite sides with locking cams, which can be suspended in corresponding, obliquely extending locking grooves on opposite side edges of the recess of the side wall. The flap part is also held by a hinge assembly on the side wall, which is designed as a hinge connection with two crank-shaped joint axes. In order to release the flap part from its closing position closing the recess, the flap part is first raised, as a result of which the latching cams are displaced upward in vertical sections of the latching grooves. Subsequently, the flap part is pivoted open, wherein the locking cams come free from the locking grooves.

The object of the invention is to provide a sheet product and a method and an apparatus of the type mentioned, which allow a simple producible and robust product.

This object is achieved for the surface product of the type mentioned above in that the hinge assembly has at least one film hinge, the two of a hinge axis comprising hinge tabs projecting in different directions, one hinge tab fixedly secured and the other hinge tab limited linearly movably guided relative to its mounting location, and wherein the linearly movable hinge tab is embedded in a hollow chamber including a stop for limiting linear motion of the hinge tab. The inventive solution, the hinge assembly made of plastic can be easily made. The hinge axis defines the pivot axis for the flap part. The limited linear mobility of the hinge plate relative to its mounting location ensures the additional Hubbeweglichkeit the flap part. Preferably, at least two film hinges for supporting the flap part are provided, which are associated with a lower edge of the cutout and thus also a lower edge of the flap part. The surface product can be assembled from several surface parts to form a three-dimensional hollow body and at least one surface part is provided with the cutout, which can be closed by the flap part. Advantageously, a Faltwandungsring is provided as a flat product for a pallet container, wherein the Faltwandungsring can be set up on a pallet base and the upper side is closed by a lid. The Faltwandungsring consists of several surface parts, each of which is deep drawn in a twin-sheet process of two thermoplastic films to form a double shell for the respective surface part. At least one of these twin-sheet parts is provided with the cutout, which can be closed by the flap part. Also, the flap part is preferably made as a twin-sheet part made of thermoplastic materials. Advantageously, the pallet base and the lid of the pallet container are manufactured as twin-sheet parts from corresponding thermoplastic materials. Particularly advantageously, both the Faltwandungsring and the pallet base and the lid of the pallet container made of the same plastic materials, preferably made of HDPE. Due to the integration of relatively limited to their mounting location linearly movable hinge plate in a hollow chamber, the hinge plate of each hinge assembly is arranged protected, so that damage can be avoided. The solution according to the invention is also suitable for other surface products which are produced in particular as twin-sheet parts from thermoplastic material. The term surface product is to be understood as meaning a product which is composed of several surface parts in one or more parts to form an open or closed hollow body, wherein the surface parts form walls or other boundaries of the surface product.

In an embodiment of the invention, the hinge plate is held by means of at least one rear incision in the hollow chamber, which limits the linear mobility of the hinge plate. The undercut is provided on the hinge strap. The hollow chamber has a corresponding abutment portion, which cooperates with the undercut of the hinge plate to limit the linear mobility of the hinge plate. The hollow chamber is matched with respect to its inner dimensions to the outer dimensions of the hinge plate, that the hinge plate is guided linearly movable in the hollow chamber, without tilting or tilting.

In a further embodiment of the invention, the hollow chamber is bounded by other, a closed housing forming wall sections, of which at least one wall section is made as a separate component and connected by fastening means with the mounting location. This wall section can be mounted in the hollow chamber after the hinge lug has been inserted. As fastening means rivet connections are preferably provided. Advantageously, the hollow chamber is provided in the region of the flap part. In the same way, the hollow chamber may be provided in the surface part, so that the fixedly fixed hinge plate is provided on the flap part. The housing is integrally integrated for this purpose in the surface part.

In a further embodiment of the invention, the separate wall section is provided with a support extension which supports a lower edge region of the flap part in the closed position of the flap part relative to the surface part. The support extension ensures that the flap part can be pushed outward in the region of the hinge arrangement in the closed position of the flap part.

In a further embodiment of the invention, the wall sections are integrally integrated in the surface part or the flap part. The wall sections of the hollow chamber are already provided with in the production of the surface part or the flap part. The hollow chamber or the housing surrounding the hollow chamber has a receiving slot through which the hinge plate is guided into the interior of the hollow chamber. This receiving slot of the hollow chamber is also produced during the production of the wall sections and of the surface part or of the flap part.

In a further embodiment of the invention, arranged in the hollow chamber hinge plate on a particular hammerhead extended end portion, which is provided with the at least one undercut. The hinge strap is common manufactured with the other hinge strap and the hinge axis as a one-piece Rlmscharnier made of plastic.

In a further embodiment of the invention, the surface part and the flap part of thermoplastic plastic films are designed as dimensionally stable twin-sheet parts. As a suitable plastic material in particular HDPE is provided. In the same way, other thermoplastic materials can be used. In particular, it is also possible to produce the surface part and the flap part separately from different plastic materials as twin-sheet parts.

In a further embodiment of the invention, the hollow chamber is provided on its receiving slot facing side with a constriction whose width is less than a width of the extended Stirnendbereiches the hinge plate, and the front end of the hinge plate is pressed captive through the receiving slot in the hollow chamber or taken. This makes it possible to already produce the hollow chamber as a closed area and then introduce the hinge plate in the direction of their subsequent linear movement within the hollow chamber through the receiving slot into the hollow chamber.

For the method for producing a Faltwandungsrings according to the aforementioned type, the object underlying the invention is achieved in that the flap part is deep-drawn simultaneously with the surface part of the two plastic films, wherein the cutout of the surface part is open to a side portion of the surface part, and wherein the flap member is disposed slightly offset from the cutout of the sheet member during the deep drawing operation, and wherein a peripheral edge of the opposite side portion of the sheet member forms an edge for an open side of the cutout. By means of the method according to the invention, it is possible to produce the flap part together with the surface part provided with the cutout in a common tool mold and to reduce the resulting material waste to a minimum. The slight displacement of the flap part relative to the cutout is necessary in order to mold the formation of corresponding latching means on the flap part on the one hand and on the edge of the cutout on the other hand already during production. According to the invention flap part and surface part can thus be prepared in a common twin-sheet deep drawing process. Different tool shapes and different deep drawing operations for the two parts are thereby avoided.

For the apparatus for carrying out the method, which is provided with a twin-sheet deep-drawing tool in which two plastic films are thermoformable to form partial shells and welded together by compressing the partial shells to the surface part, the object underlying the invention is achieved in that the twin-sheet deep drawing tool is configured to form a one-piece twin-sheet part comprising the surface part and the flap part. The twin-sheet deep drawing tool has opposing tool shapes for deep drawing of the respective plastic film, in which the flap part to be produced is arranged slightly offset from a section of the surface part. After producing the corresponding twin-sheet product, the flap part is separated in the region of the cutout by machining of the surface part. To form a Faltwandungsrings two surface parts are provided, which are each provided with a cutout for each flap part, and each forming a side wall and an end wall.

Fig. 1

zeigt schematisch einen Palettenbehälter mit einer Ausführungsform eines erfindungsgemäßen Flächenprodukts in Form eines Faltwandungsrings,

Fig. 2

den Faltwandungsring für den Palettenbehälter nach Fig. 1 mit zwei Klappenteilen, die Wandungsausschnitte verschließen,

Fig. 3

den Faltwandungsring nach Fig. 2 in angehobener Zwischenstellung des Klappenteils,

Fig. 4

den Faltwandungsring nach Fig. 3 in einer ersten ausgeschwenkten Zwischenstellung des Klappenteils,

Fig. 5

den Faltwandungsring nach den Fig. 2 bis 4 in einer zweiten ausgeschwenkten Zwischenstellung des Klappenteils,

Fig. 6

den Faltwandungsring mit vollständig geöffnetem Klappenteil,

Fig. 7

den Faltwandungsring nach Fig. 2 mit einer Scharnieranordnung in einer Explosionsdarstellung,

Fig. 8

in vergrößerter Darstellung einen Ausschnitt VIII des Faltwandungsrings 1 nach Fig. 7,

Fig. 9

den Ausschnitt nach Fig. 8 mit einer offenen Hohlkammer im Bereich der Scharnieranordnung,

Fig. 10

den Ausschnitt nach Fig. 8 mit in die offene Hohlkammer eingebettetem Filmscharnier,

Fig. 11

den Ausschnitt nach Fig. 8 mit aufgesetztem Deckteil,

Fig. 12

eine weitere Ausführungsform eines erfindungsgemäßen Faltwandungsrings ähnlich Fig. 2,

Fig. 13

in vergrößerter Darstellung einen Ausschnitt XIII des Faltwandungsrings gemäß Fig. 12 im Bereich einer Scharnieranordnung,

Fig. 14

einen Ausschnitt XIV des Faltwandungsrings nach Fig. 12 in vergrößerter Darstellung,

Fig. 15

einen Klappenteil des Faltwandungsrings nach Fig. 12 in perspektivischer Darstellung,

Fig. 16

vergrößert einen Ausschnitt XVI der Darstellung nach Fig. 15,

Fig. 17

vergrößert einen Ausschnitt XVII des Klappenteils nach Fig. 15 und

Fig. 18

in schematischer Darstellung einen Flächenteil des Faltwandungsrings nach Fig. 2 in einer Anordnung innerhalb einer Werkzeugform eines Twin-Sheet-Tiefziehwerkzeugs gemeinsam mit dem Klappenteil.

Ein Palettenbehälter 1 gemäß Fig. 1 ist für den Transport und die Lagerung von Produkten vorgesehen, die insbesondere für die Automobilbranche zur Fahrzeugherstellung benötigt werden. Der Palettenbehälter 1 weist einen Palettenboden 3 sowie einen Faltwandungsring 2 und einen Deckel 4 auf. Sowohl der Palettenboden 3 als auch der Faltwandungsring 2 und der Deckel 4 sind jeweils aus thermoplastischem Kunststoff als Twin-Sheet-Teile gestaltet. Dies bedeutet, dass sowohl der Palettenboden 3 als auch der Faltwandungsring 2 als auch der Deckel 4 zweischalig aus entsprechend thermoplastischen, plattenförmigen Kunststofffolien tiefgezogen sind, wobei in einem entsprechenden Twin-Sheet-Tiefziehwerkzeug die beiden Teilschalen zu dem Twin-Sheet-Teil unter Bildung von Hohlräumen zwischen den Teilschalen miteinander verschweißt werden. Als Kunststoffmaterial ist für alle drei Teile beim dargestellten Ausführungsbeispiel HDPE vorgesehen.Further advantages and features of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are illustrated by the drawings.

Fig. 1

shows schematically a pallet container with an embodiment of a surface product according to the invention in the form of a Faltwandungsrings,

Fig. 2

the folding wall for the pallet container Fig. 1 with two flap parts closing the wall cutouts,

Fig. 3

the Faltwandungsring after Fig. 2 in raised intermediate position of the flap part,

Fig. 4

the Faltwandungsring after Fig. 3 in a first pivoted intermediate position of the flap part,

Fig. 5

the Faltwandungsring after the Fig. 2 to 4 in a second pivoted intermediate position of the flap part,

Fig. 6

the Faltwandungsring with fully open flap part,

Fig. 7

the Faltwandungsring after Fig. 2 with a hinge arrangement in an exploded view,

Fig. 8

in an enlarged view a section VIII of the Faltwandungsrings 1 after Fig. 7 .

Fig. 9

the clipping after Fig. 8 with an open hollow chamber in the region of the hinge arrangement,

Fig. 10

the clipping after Fig. 8 with a film hinge embedded in the open hollow chamber,

Fig. 11

the clipping after Fig. 8 with attached cover part,

Fig. 12

a further embodiment of a Faltwandungsrings invention similar Fig. 2 .

Fig. 13

in an enlarged view a section XIII of the Faltwandungsrings according to Fig. 12 in the area of a hinge arrangement,

Fig. 14

a section XIV of the Faltwandungsrings after Fig. 12 in an enlarged view,

Fig. 15

a flap part of the Faltwandungsrings after Fig. 12 in perspective,

Fig. 16

Enlarges a section XVI of the illustration Fig. 15 .

Fig. 17

enlarges a section XVII of the flap part Fig. 15 and

Fig. 18

in a schematic representation of a surface part of the Faltwandungsrings after Fig. 2 in an arrangement within a mold of a twin-sheet thermoforming tool together with the flap portion.

A pallet container 1 according to Fig. 1 is intended for the transport and storage of products needed especially for the automotive industry. The pallet container 1 has a pallet base 3 and a Faltwandungsring 2 and a lid 4. Both the pallet base 3 and the Faltwandungsring 2 and the lid 4 are each made of thermoplastic material as twin-sheet parts. This means that both the pallet base 3 and the Faltwandungsring 2 and the cover 4 are thermoformed from two correspondingly thermoplastic, plate-shaped plastic films, wherein in a corresponding twin-sheet thermoforming tool, the two shells to the twin-sheet part to form Cavities between the partial shells are welded together. As a plastic material HDPE is provided for all three parts in the illustrated embodiment.

The Faltwandungsring 2 is - as later with reference to the Fig. 18 is executed - formed from two twin-sheet surface parts, which are mechanically connected at their opposite ends to the ring shape, preferably by riveting. The Faltwandungsring 2 is in its unfolded functional position according to Fig. 1 inserted in edge beads of the pallet base 3 and held in this erected functional position by plugging. On an upper side of the Faltwandungsrings 2, the lid 4 is placed, the underside is tuned to an upper edge region of the Faltwandungsrings 2, that the cover 4 can be easily plugged onto the top of the Faltwandungsrings 2. The Faltwandungsring 2 forms in its established functional position, the side walls of the pallet container 1. The Faltwandungsring 2 can be folded into a flat folded rest position in which the Faltwandungsring 2 can be embedded in a formed by a peripheral edge region of the pallet base 3 recess of the pallet base 3. The lid 4 is designed with its underside so that it can be plugged in the folded position of the Faltwandungsrings 2 on the edge region of the pallet base 3 and covered in this position, the collapsed Faltwandungsring. In this position, the pallet container 1 can be transported to save space as soon as the pallet container 1 is completely emptied.

The Faltwandungsring 2 has a total of four side walls 5, 6, of which two opposing wide wall parts 5 each have a cutout have, which is closable by a respective flap part 7. Two narrow side walls 6 are formed by narrow, closed wall parts.

The cutouts of the wall parts 5 are rectangular and open to an upper side of the Faltwandungsrings 2 out. Each cutout is closed by a respective flap part 7, which is mounted pivotably in the region of its lower edge by means of three hinge arrangements 8 on the wall part 5 in the region of a lower edge of the respective cutout. The pivoting movement of the flap part 7 is preceded by a lifting movement at the beginning of an opening operation of the flap part 7 for a release of the flap part 7 of the Wandungsteils 5. The three hinge assemblies 8 are arranged distributed uniformly over the width of the flap part 7 and designed identical to each other. To the flap part 7 in its closed position according to Fig. 2 To keep 7 locking means 9 as well as on opposite side edge regions of the section of the Wandungsteils 5 complementary locking means 10 are provided both on opposite side edge regions of the flap part. The locking means 10 are integrally formed on the wall part 5. The locking means 9 are integrally formed on the opposite edge regions of the flap part 7. The complementary locking means 9, 10 are formed by corresponding locking cams and locking grooves. The locking cams and locking grooves are designed such that each flap part 7 from its locked closed position according to Fig. 2 initially according to Fig. 3 is raised in the arrow direction upwards, wherein the corresponding locking means 9, 10 form a positive guidance for this lifting movement. The locking means 9, 10 form an abutment for an upper end position of this lifting movement and at the same time give the flap part 7 for a subsequent pivoting movement to the outside (see 4 to 6 ) free. The locking means 9, 10 are functionally designed in the same way as the locking cams and locking grooves for securing the flap part in the transport container of DE 29 09 136 A1 , For a more detailed explanation of the locking means 9, 10 is therefore omitted here. Details of this locking means 9, 10 are the drawings according to the Fig. 2 to 6 and 18 removable.

Each hinge assembly 8, as shown in the Fig. 7 to 11 A film hinge 12 is designed as a one-piece, plate-like plastic part and has an upper hinge plate 13 and a lower hinge plate 15, which are connected to one another via a web 14 forming a hinge axis. The hinge axis web 14 has a smaller thickness than the Hinge tabs 13 and 15 and forms the actual hinge joint of the film hinge 12th

The lower hinge plate 15 of the film hinge 12 is inserted into a rectangular recess of the wall part 5 and fixedly connected via fastening means 16, in this case via two rivets, with the wall part 5. The hinge plate 15 is therefore fixedly connected to the wall part 5. The hinge axis web 14 protrudes in the unloaded position of the film hinge 12 from the lower hinge plate 15 from above. At an upper end portion of the hinge axis web 14 is in the upper hinge plate 13, which is provided with a hammerhead or T-shaped Stirnendbereich. The front end region is steppedly widened with respect to the brim of the lower hinge lug 15 and the width of the hinge axis web 14 and forms an undercut 18 on opposite sides in each case.

At a lower edge region of the associated flap part 7, a recess is provided which forms an open hollow chamber 11 for receiving the upper hinge plate 13. The hollow chamber 11 has a closed rear wall and opposite side edges, which guide the hinge plate 13 in the longitudinal direction of the film hinge 12, ie in the vertical direction of the Faltwandungsrings 1 linearly movable. An upper edge region of the hollow chamber 11 (in Fig. 10 recognizable) serves as the upper end stop for the linear movement of the film hinge 12 relative to the flap part 7. In the region of a bottom, the hollow chamber 11 is provided with two indentations 19 which are adapted to the undercuts 18 of the upper hinge plate 13 so that they down - also relative to the longitudinal axis of the film hinge 12 - form a stop for the undercuts 18 of the upper hinge plate 13 and consequently limit the linear movement of the hinge plate 13 relative to the flap member 7 within the hollow chamber 11 downwards, ie form-fitting manner to the lower edge of the section of the Wandungsteils 5.

The open hollow chamber 11, in which the upper hinge plate 13 of the film hinge 12 is inserted, is closed by a cover part, in this case a cover plate 17. The cover plate 17 is fixedly connected by means of four rivets 16 each side of the hollow chamber 11 with the flap part 7. The cover plate 17 forms in the closed position of the flap part 7 downwardly projecting support extension 22, which is supported on the inside on the lower hinge plate 15 and consequently an additional securing the flap part 7 in its closed position relative to the wall part 5 in the area forming a lower edge of the cutout. The cover plate 17 is made of plastic as a corresponding plate part. In the same way it can be designed as a metal plate part. The hollow chamber 11 is integrally formed in the recess of the flap part.

The stroke, which is formed by the limited linear movement between the flap part 7 and the upper hinge plate 13 of the film hinge 12 is slightly larger than the stroke, which is necessary for raising and loosening the flap part 7 in its closed position from the corresponding locking means 9, 10.

The Faltwandungsring 1a after the Fig. 12 to 17 essentially corresponds to the previously based on the Fig. 1 to 11 described Faltwandungsring. Identical parts as the film hinge 12 are provided with the same reference numerals. Functionally identical parts are also provided with the same reference numerals but with the addition of the letter a. To avoid repetition of the comments on the Faltwandungsring 1 after the Fig. 1 to 11 directed. Hereinafter, the differences of the Faltwandungsrings 1a relative to the embodiment of the Fig. 1 to 11 received. Also, the Faltwandungsring 1a is formed in a twin-sheet process by bivalve surface parts, analogous to the Faltwandungsring after the Fig. 1 to 11 , The essential difference in the Faltwandungsring 1a is that the respective flap portion 7a of the opposite wall portions 5a is held by means of modified hinge assemblies 8a lifting and pivoting on the respective section of the wall part 5a. In the embodiments of the Fig. 12 to 17 the hollow chamber 11a for receiving the upper hinge plate 13 of the film hinge 12 is already formed integrally as a closed hollow chamber during the production of the flap part 7a. The hollow chamber 11a is open only via a receiving slot 21 in the region of an underside of the flap part 7a ( 15 to 17 ). The hollow chamber 11a is provided on the inside in the same way with lateral guide edges for a linearly movable displaceability of the upper hinge plate 13 and with stops 19a for limiting the linear mobility of the hinge plate 13. The stops 19a cooperate with the undercuts 18 of the front end region of the upper hinge plate 13 in the same way, as previously described with reference to the Faltwandungsrings 1 according to the Fig. 1 to 11 had been carried out.

The front end region of the upper hinge plate 13 is, as shown by the Fig. 16 is clearly visible, provided on its opposite sides with centering bevels, which facilitate a pressing into the receiving slot 21 and in particular the pressing through the constriction formed between the opposite stops 19a of the hollow chamber 11a. The edges of the upper hinge plate 13 are elastically deformable to a small extent. The edge regions of the bottleneck formed by the stops 19a of the hollow chamber 11a are slightly elastically deformable, so that the hinge plate 13 can be pressed through the receiving slot 21 and through the bottleneck into the hollow chamber 11a or pressed and captive after pressing or wrapping the hollow chamber 11 a is held. Once the film hinge 12 has reached the mounting position within the hollow chamber 11a ( Fig. 17 ), it is linearly movable in the same way relative to the hollow chamber 11 a forming housing portion 20 of the flap portion 7 a, as in the film hinge 12 according to the embodiment of the Fig. 1 to 11 the case was.

The lower hinge plate 15 is fixed in a similar manner in a corresponding recess of the wall part 5a by means of rivets 16, as in the embodiment according to the Fig. 1 to 11 the case is.

In Fig. 18 is shown schematically how the Faltwandungsring 2 according to the Fig. 1 to 11 produced in a twin-sheet process. In this case, two identical surface parts are successively produced in a twin-sheet deep-drawing tool T, which are then joined together at their opposite side edges to form a ring, thereby resulting in the total of four side walls of the Faltwandungsrings 2. According to the invention, at the same time as the production of the respective surface part, which in each case comprises a front or rear wall part 5 and a side wall part 6, also the respectively associated flap part 7 is produced. Since at the same time the locking means 9, 10 are integrally formed both in the region of the section of the Wandungsteils 5 as well as on the opposite side edges of the flap part 7, the flap member 7 is slightly offset relative to the cut of the Wandungsteils 5 outwards and upwards within the Twin Sheet thermoforming tool T arranged. In other words, the correspondingly negatively shaped tool shapes of the twin-sheet deep-drawing tool T provide a correspondingly offset arrangement of the flap part 7 relative to the cutout. In addition, the dividing line of the two surface parts, by means of which the two surface parts are mechanically joined together after production in the twin-sheet process, is advantageously provided on the outer lateral edge regions of the flap part 7, that the corresponding edge region of the cutout of the corresponding wall part 5 is formed by the second surface part. This is based on the Fig. 18 illustrates: on the right side of the surface part, a lateral edge region of the section of the Wandungsteils 5 of the second, not shown surface part is provided. The in the representation after Fig. 18 Right side of the second surface part is therefore mechanically added after production in the twin-sheet thermoforming tool T in a simple manner to the left side of the first, here shown surface part, whereby the laterally still open cutout is inevitably closed and the second locking means side for the flap part 7 results. Together with the production of the respective surface part, a flap part 7 is therefore also produced in each case in the twin-sheet deep-drawing tool T. After completion, the flap part 7 is cut out of the cutout of the surface part produced therewith by machining, the edges are deburred accordingly and then the mechanical joining of the two identical in their design forth surface parts can be done. The meantime separate flap parts 7 are then mounted by means of the hinge assemblies 8 in the cut-outs of the two wall parts 5.

Claims (10)

Surface product, in particular Faltwandungsring for a pallet container, having at least one surface part which is closable by a movably mounted between a closed position and an opening position flap part, wherein for supporting the flap part at least one hinge arrangement is provided which is designed such that the flap part is both limited liftable and pivotally mounted, characterized in that the hinge assembly (8, 8a) has at least one film hinge (12) comprising two projecting from a hinge axis in different directions hinge plates (13, 15), wherein a Hinge tab (15) fixed in place and the other hinge strap (13) limited linearly movably guided relative to their mounting location, and wherein the linearly movable hinge plate (13) in a hollow chamber (11, 11 a) is embedded, the a stop (19, 19 a) Limitation of the L inearbeweglichkeit the hinge plate (13). Surface product according to claim 2, characterized in that the hinge strap (13) by means of at least one undercut (18) in the hollow chamber (11, 11 a) is held, which limits the linear mobility of the hinge plate (13). Surface product according to claim 1 or 2, characterized in that the hollow chamber (11, 11a) is delimited by a plurality of wall sections forming a closed housing, of which at least one wall section (17) is made as a separate component and fastened by fastening means (16) connected is. A sheet product according to claim 3, characterized in that the separate wall portion (17) is provided with a support extension (22) supporting a lower edge portion of the flap portion (7) in the closed position of the flap portion (7) relative to the surface portion (5) , Surface product according to claim 1 or 2, characterized in that the wall sections are integrally integrated in the surface part or the flap part. Surface product according to one of the preceding claims, characterized in that in the hollow chamber (11, 11a) arranged hinge plate (13) has a particular hammerhead-like widened front end, which is provided with the at least one undercut (18). Surface product according to claim 6, characterized in that the hollow chamber is provided on its receiving slot (21) facing side with a constriction whose width is smaller than a width of the extended end face of the hinge plate (13), and in that the front end region of the hinge plate (13 ) is captively pressed or hammered through the receiving slot (21) in the hollow chamber (11 a). Surface product according to at least one of the preceding claims, characterized in that the surface part (5, 6) and the flap part (7) made of thermoplastic plastic films are designed as dimensionally stable twin-sheet parts. A method for producing a Faltwandungsrings according to any one of the preceding claims, wherein the Faltwandungsring is deep-drawn as at least one surface part in a twin-sheet process of two plastic films to at least one twin-sheet part and then with its opposite side portions of the at least one surface part of the Ring mold is joined together, characterized in that the flap part (7) is deep-drawn simultaneously with the surface part (5, 6) of the two plastic films, wherein the cutout of the surface part is open to a side portion of the surface part, and wherein the flap part (7) is arranged slightly offset from the cutout of the surface part during the deep drawing operation, and wherein a peripheral edge of the opposite side portion of the surface part forms an edge for an open side of the cutout. Apparatus for carrying out a method according to claim 9 with a twin-sheet thermoforming tool (T), in which two plastic films are deep-drawable to form part shells and welded together by pressing the partial shells to the surface part, characterized in that the twin-sheet thermoforming tool (T) to form a one-piece twin-sheet part, which is the surface part (5, 6) and the flap part (7), is configured.

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