DE102012013256A1 - Panel for making a sectional door panel and method of making a panel - Google Patents

Abstract

The invention relates to a panel for producing a sectional door leaf with an outer shell, which forms an outer boundary surface of the sectional door leaf and at least partially consists of a metallic material, and an inner boundary surface of the sectional door leaf which runs approximately parallel to the outer boundary surface and which is at least partly made of a metallic material inner shell, the outer shell having an upper and / or a lower transition area extending in the direction of the inner shell and in the longitudinal direction of the panel and the inner shell having an upper and / or lower transition area in the direction of the outer shell and in Has the longitudinal direction of the panel extending transition area and the mutually facing edges of the transition areas are spaced from each other, wherein an edge of at least one transition area of the outer shell over a possibly self-adhesive and approximately above Material web of thermally insulating material extending over the entire length of the panel is connected to an edge of a transition region of the inner shell facing it.

Description

The invention relates to a panel for producing a sectional sheet with an outer peripheral surface of the Sektionaltorblatts forming and at least partially made of a metallic material outer shell and an approximately parallel to the outer boundary surface extending inner boundary surface of the Sektionaltorblatts forming and at least partially made of a metallic material inner shell, wherein the outer shell has an upper and / or a lower extending in the direction of the inner shell and in the longitudinal direction of the panel transition region and the inner shell has an upper and / or a lower respectively towards the outer shell and in Having a longitudinal direction of the panel extending transition region and the facing edges of the transition areas are spaced from each other, a Sektionaltorblatt with such a panel, a sectional door with a corresponding Sekti onaltorblatt and a method for producing such a panel.

Sectional doors have a door leaf which is movable along a predetermined path between a closed position and an open position and which comprises interconnected components or sectional door panels of a plurality of joints arranged one behind the other along the predetermined path and having articulation axes extending perpendicularly to the predetermined path. In the following, the Gelenkachsrichtung is referred to as the longitudinal direction of the panels.

During the door leaf movement along the path generally defined by a guide rail arrangement and having at least one arcuate section, a pivotal movement takes place between adjacent sectional door panels. In order to avoid the formation of a finger-permitting gap between the edges of the adjacent panels in the course of this pivoting movement, the panels are usually provided with special edge profiles. Such edge profiles are, for example, in the EP-A-0 304 642 and the EP-A-0 370 376 specified. In the following, corresponding edge profiles are referred to as finger protection profiles. The disclosure of the cited documents is hereby incorporated by reference herein expressly with regard to the shape of the edge profiles or finger protection profiles of individual sectional door panels of a door leaf for a sectional door.

As explained in the cited documents, the outer surfaces of the individual panels usually have a profiling or embossing, with which determines the overall visual impression of the door and the stability of the door leaf is improved.

Sectional doors are commonly used for closing openings in exterior walls of buildings. In many cases, it is important to ensure a satisfactory thermal insulation when the door is closed. For this purpose, the components or sectional door panels used for the production of sectional doors usually have an insulating body which bears against an inner boundary surface of the metal shell forming the outer boundary surface of the component. This insulating body is usually fixed by an edge profile designed in one piece with the shell in its position relative to the shell. In addition, the insulating body can also be covered on its side facing away from the shell boundary surface of a cover, so as to avoid damage to the insulator. Corresponding Sektionaltorpaneele are, for example, in the EP-A-0 304 642 specified. In these known sectional door panels extending in each case in the direction of the opposite shell transition areas at the upper and lower edges of the individual shells are provided. They are made in one piece with the shells, wherein each transition region additionally also has an approximately parallel to the outer boundary surface of the shell extending edge lug, which is foamed into the insulating body.

In order to produce the outer and inner shell of these known panels, a steel strip withdrawn from a supply roll passes through a shaping device, such as a roll former, with a number of along a predetermined conveying path arranged one after the other and approximately perpendicular to the plane Conveyor extending axes of rotation rotatable forming rollers. In the so equipped with appropriate transition areas and resting on the outer boundary surface outer shell a the insulating body in the form of insulating foam, esp. Polyurethane foam, forming liquid is filled. The outer shell is then covered with the inner shell while the foam is being formed. In this case, the insulating foam forming liquid can be sprayed by stationary application nozzles on the intermediate product in the form of the outer shell, wherein the sprayed per time amount of liquid is controlled in dependence on the conveying speed of the shells.

In this context, it has proved to be useful when with the inner shell of the outer boundary surface of the shell facing away from boundary surface of the insulating body is covered, because with such an inner shell uncontrolled foaming of the insulating foam forming liquid can be prevented. For this purpose, a flat inner shell of the type described above is suitably used, which extends substantially parallel to the outer surface of the intermediate product and immediately after the application of the insulating foam forming liquid is attached. To avoid undesirable deformation of the inner and outer shell, it has proven to be expedient if the inner and outer shell are conveyed after attachment of the cover along a predetermined curing distance between two guide elements, one of which on the outer boundary surface of the outer shell and the other the inner boundary surface of the inner shell rests.

In the course of the foaming process, the edge lugs formed at the transition areas of the shells are foamed by the insulating foam. In this way, the shells are held together by means of insulating foam. If this ensures that the transition areas of the shells are arranged contact-free so that a predetermined distance between them and esp. Respectively between the marginal flags is maintained, the formation of metallic thermal bridges between the shells can be avoided. However, it has been shown that the production of the components just described while maintaining a predetermined distance between the transition areas and simultaneously ensuring the compliance with the usually desired finger protection tolerance limits is associated with a lot of effort.

For this reason, it has gone over to renounce the thermal separation between the shells, the edge profiles of the Sektionaltorpaneele complete integral with the outer shell, such that the transition regions formed on the outer shells completely overlap the corresponding Isolierkörperrand. In the production of corresponding Sektionaltorpaneele the foam-forming liquid is filled in the previously provided with the transition areas outer shell, a cover assembly on the outer boundary surface of the outer shell facing away edges of the finger protection profiles or transition areas clipped and kept the arrangement thus produced between two pressure belts, until the foaming is complete. Subsequently, the components of the continuous strip formed by the profiled steel strips are cut to predetermined lengths. Corresponding Sektionaltorpaneele are, for example, in the EP-A-0 370 376 described.

Although these sectional panels can be manufactured with high manufacturing accuracy and comparatively low production costs, it has proven to be problematic here that a desired insulation effect is difficult to achieve.

In the face of these problems will be in the DE 10 2007 004 081 A1 a method for producing Sektionaltorpaneelen indicated, in which the transition regions of the outer shell after completion of an example. According to EP-A-0 370 376 formed panel, ie after formation of a Isolierschaums therein and cover the insulating foam with a suitable covering, the cross-sectional area in at least one parallel to the outer surface extending cutting plane reducing weakening be subjected, so as to improve the insulating properties of corresponding components. By means of this known method, a transition region which completely overlaps an edge of the insulating body can be produced and the component can be prepared using this edge profile, wherein the weakening of the material takes place only after attachment of the insulating body to the transition region or the shell. When using appropriate panels, however, it has been shown that the weakening of the transition areas leads to a poor stability of the overall product.

In view of these problems in the prior art, the invention has for its object to provide a panel of the type mentioned, which can be produced while ensuring sufficient insulation properties and good overall stability without undue expense, and to provide a corresponding manufacturing method.

According to the invention this object is achieved by a development of the known panels, which is characterized essentially in that an edge of at least one transition region of the outer shell over a possibly self-adhesive and extending over approximately the entire length of the panel material web of thermally insulating material with a this facing edge of a transition region of the inner shell is connected.

This invention is based on the knowledge that according to the state of the art EP-A-0 304 642 observed problems with respect to compliance with the required to obtain the desired finger protection effect tolerance limits primarily due to the fact that the expansion of the polyurethane foam is not fully completed even after leaving the production line. The (slight) expansion of the Foam during transport and storage of appropriate products causes the edge flags and thus the entire transition areas of the individual shells of the panels undergo a deformation which affects the finger protection effect and partially obstructs the installation of corresponding sectional doors.

Surprisingly, this undesirable deformation can be prevented according to the invention by providing a simple material strip of thermally insulating material, such as a plastic strip, esp. Self-adhesive plastic tape or adhesive tape, with which the mutually facing edges of the transition areas are connected. A corresponding strip of material can be deducted without much effort from a winding of the tape and on the edges of the transitional areas, for example. With the aid of suitable contour rollers, pressed so as to, for example. Using a "pressure-sensitive adhesive" on the web a cohesive connection between to produce the material web and the mutually facing edges of the transition areas, which is sufficient to avoid the undesirable deformation.

Like in the EP-A-0 370 376 described in detail, it has proved to be beneficial if the individual panels of a sectional door supported each other in the closed state of the door leaf. In this context, it has proved to be expedient in the context of the invention if the upper and / or lower transition region of the inner shell has a support zone extending parallel to the longitudinal direction of the panel and perpendicular to an inner boundary surface. When two similar panels are stacked, the upper panel may be supported by the support zone of its lower transition region on the support zone of the upper transition region of the lower panel. The transition areas are made in one piece with the inner shell. This has proved to be particularly useful for static reasons, when the outer shells have transition areas which are arched or polygonal curved, so as to bring about the desired finger protection effect.

To be particularly favorable, it has been found that the support zone of the inner shell is connected to an inclined web of material that simulates the desired polygonal contour of the finger protection profiles, to the edges of the transition areas of the outer shell. For this purpose, it has proven expedient if a surface normal to the insulating material web includes an inclination angle of less than 90 °, preferably 60 ° or less, esp. 50 ° or less, with a surface normal to the nearest support zone of the inner shell, wherein the desired polygonal structure can then be achieved without excessive production costs, if the inclination angle 20 ° or more, preferably 30 ° or more, esp. 40 ° or more.

To stabilize the shells, it has proven to be expedient if at least one edge of at least one transitional area is folded back onto itself. This not only stabilizes the shells themselves, but also compensates for the manufacturing tolerances of the metal bands used to make the shells.

To continue the polygonal edge contour ensuring the desired finger protection, it has proved expedient if the edge of the upper and / or lower transition region of the outer shell merges in the direction of the outer boundary surface into a substantially flat connection region, the surface normal to the material web Angle of less than 90 °, preferably 60 ° or less, in particular 50 ° or less, but 20 ° or more, esp. 30 ° or more, includes with the surface normal to the connection area.

To further improve the insulating effect and to prevent the ingress of moisture from the outer boundary surface in the direction of the inner boundary surface, it has proven to be expedient that in the connection region extending in the longitudinal direction of the panel groove is formed with a sealing strip received therein. Additionally or alternatively, between the support zone at the upper transition region of the inner shell and the material web extending in the longitudinal direction of the panel and designed to receive a sealing strip groove may be formed.

It has already been explained in detail that in the area of the transition between individual panels of a sectional door leaf, a finger protection effect is regularly sought. In addition it has to the reproduction of in the EP-A-0 370 376 described finger protection profiles proved to be expedient if the upper transition region of the outer shell forms together with the upper transition region of the inner shell and the transition areas connecting these webs a extending in the longitudinal direction of the panel projection which is approximately complementary to a recess, that of the lower transition region the outer shell is determined together with the lower transition region of the inner shell and the material web connecting these transitional regions, wherein a finger guard for two successive and with respect to a parallel to the longitudinal direction of the panels extending pivot axis pivotally interconnected panels is created.

As is apparent from the above explanation of conventional panels, the desired insulating effect can be ensured particularly reliable when the cavity formed between the shells is at least partially filled with an insulating material, such as a foam, esp. PU foam.

As can be seen from the above explanation, a sectional door panel according to the invention has a number of panels arranged one behind the other in the door leaf movement direction, which are articulated to one another with respect to joint axes perpendicular to the door leaf movement direction and in the longitudinal direction of the panels, at least one of these panels being designed according to the invention. An inventive sectional door has a corresponding Sektionaltorblatt and guide rails for guiding the Torblattbewegung between an open position in which the door leaf is preferably arranged above the head in a horizontal plane, and a closed position in which the door leaf is preferably arranged approximately in a vertical plane on. The guide rails expediently have a guide rail section which runs in a straight line, approximately in the direction of gravity, a guide rail section running in a straight line, approximately in the horizontal direction, and an arcuate guide rail section connecting the two straight sections.

In a method according to the invention for producing a panel according to the invention, a shell resting on its boundary surface and consisting at least partly of a metallic material, in particular the outer shell, is charged with a preferably liquid material forming an insulating foam and the other shell, esp inner shell, positioned at a predetermined distance above the shell resting on its boundary surface, that the edges of the transition regions of the shell facing each other, wherein the inventive method is characterized essentially by the fact that the opposite edges of the transition regions of the shells before completion of foaming of the material forming the insulating foam are connected to one another with a material web of insulating material, wherein the connection can be effected particularly simply if the material web is designed as a self-adhesive adhesive tape t is, for example, with a "pressure-sensitive adhesive" is coated.

As part of a continuous manufacturing process, the shells, which are at least partially made of a metallic material, can be conveyed longitudinally during the charging with the foam-forming material, the positioning and / or the bonding with the material web and, if necessary, for the production of panels after foaming to a predetermined length get cut.

In order to maintain the desired manufacturing accuracy, the transition regions of the shells positioned at a predetermined distance may at least partially be accommodated during foaming in a positioning device whose shape is adapted to the shape of the transition regions, esp. The known finger protection profiles can correspond.

In this case, the positioning device may be embodied in the form of at least one endlessly circulating positioning chain which is conveyed together with the shells, wherein the individual chain links of the positioning chain are profiled laterally on their edges facing the transition areas or the panel according to the transition regions or finger protection profiles.

The deflection of the shells during the manufacturing process can be effectively prevented if the shell to be positioned at a predetermined distance with respect to the resting on the boundary surface shell is held with acting on its boundary surface, preferably with magnetic and / or pneumatic holding means in position.

A controlled foaming can be achieved with a compact manufacturing plant, when the shell to be positioned is lowered along a predetermined path onto the resting on its boundary surface metal shell and the foam-forming material is introduced with a arranged in the Absenkbereich between the shells feeder.

In the following, the invention will be explained with reference to the drawing, to which reference is expressly made with regard to all details essential to the invention and not further highlighted in the description. In the drawing shows:

1 1 is a sectional view of a sectional sheet in the transition region between two successive panels along a sectional plane guided perpendicular to the joint axes of the joints interconnecting the panels according to a first embodiment of the invention;

2 one of the 1 corresponding sectional view of a second embodiment of the invention,

3 one of the 1 corresponding sectional view of a third embodiment of the invention,

4 one of the 1 corresponding sectional view of a fourth embodiment of the invention,

5 upper transition regions of a fifth embodiment of the invention and

6 upper transition areas of a sixth embodiment of the invention.

The panels of in 1 illustrated embodiment of the invention comprise an outer boundary surface 110 of the sectional door panel forming outer shell 100 , one an inner bounding surface 210 of the sectional door panel forming inner shell 200 and webs 300 made of an insulating material, with which mutually facing edges of transition areas 150 . 190 . 250 . 290 the shells 100 . 200 connected to each other.

The outer shell 100 has at its upper edge one towards the inner shell 200 extending transitional area, the total with 150 is designated. This transition area 150 includes following the outer boundary surface 110 towards the inner shell 200 extending step area 120 , one approximately parallel to the outer boundary surface 110 extending floor area 130 and a connection area 140 , where a surface normal to the floor area 130 an angle of less than 30 ° with a surface normal to the connection area 140 includes. In the connection area 140 is a groove 142 Shaped in which a sealing strip 145 is included.

The inner boundary surface 210 the inner shell 200 goes over a recess 212 in a support zone 230 about, which is approximately parallel to the longitudinal direction of the panels and perpendicular to the inner boundary surface 210 runs. The support zone 230 falls in the direction of the edge of the connection area facing it 140 the outer shell 100 down and is at 232 folded back on itself. Likewise, that's the edge 232 facing edge of the connection area 140 at 144 folded back on itself, so as to stabilize the transition areas 150 . 250 . 190 . 290 to obtain.

The border areas 144 and 232 are over a material web 300 made of thermally insulating material interconnected. The material web 300 is executed in the embodiment of the invention shown in the drawing as a self-adhesive plastic material web or plastic film or plastic tape. A surface normal to the edges 232 and 144 interconnecting web 300 closes with a surface normal to the support zone 230 an angle of less than 45 °. Likewise, the surface normal closes on the material web 300 with a surface normal to the connection area 140 of the upper transition area 150 the outer shell 100 an angle of less than 45 °.

The transition area 190 at the bottom of the outer shell 100 essentially comprises a nose pointing downwards 160 pointing towards the inner shell 200 in a sealing area 170 passes, that of the inner shell 200 facing edge 172 folded back on itself for the purpose of stabilization. Between the step area 120 , the floor area 130 and the nose area 160 a bead-like structure is modeled, wherein the height of the bead is more than 10 mm, esp. More than 15 mm, so that a finger trapping between the nose area 160 and the step area 120 is excluded.

The one at the bottom of the inner shell 200 formed transition area 290 essentially comprises one in the indentation 212 engaging projection 340 , which in a in the Torblattschließstellung parallel to the support zone 230 extending support zone 270 passes, whose outer shell 100 facing edge 272 folded back on itself. The inner shell 200 facing edge 172 at the transition area 190 is over a material web 300 made of an insulating material with the outer shell 100 facing edge 272 the support zone 270 connected. The through the transition areas 150 . 190 . 250 . 290 as well as the material webs 300 formed from an insulating material edge profiles of the panels correspond in terms of their contour and finger protection effect according to the edge profiles EP-A-370,376 , to the disclosure of which reference is made.

In addition, it should be noted that the inner shell 200 in the area of their inner boundary surface 210 repeatedly folded back on itself attachment areas 280 having triple thickness, which are intended for fixing fastening screws for the panels interconnecting hinges.

The in the 2 to 4 illustrated embodiments of the invention differ essentially by the basis of the 1 explained embodiment that the support zone 220 on her outer shell 100 facing side in a groove 400 passes, in turn, a sealing strip 410 is received, wherein the shape of the grooves and sealing strips according to the 2 to 4 can be made variable. Due to the additional profiling of the upper transition area 250 the inner shell 200 a stabilization is achieved, which counteracts a deformation of the panel under the load of a panel resting thereon. Similar profiles are also in the in the 5 and 6 recognizable upper transition areas 250 the inner shell 200 recognizable.

According to 7 can at the lower transition area 290 the inner shell 200 a mounting rail 600 be attached for a bottom seal, which without thermal contact with the outer shell 100 can be installed, so that also on the mounting rail 600 the bottom seal the insulating effect is not affected.

The invention is not limited to the embodiments explained with reference to the drawing. Rather, it is also intended to attach the material web of insulating material to the transition areas with mechanical fasteners. Furthermore, arcuate or otherwise executed wall profiles can be used.

LIST OF REFERENCE NUMBERS

100

outer shell

110

outer boundary surface

120

step region

130

floor area

140

connecting area

142, 400

groove

145, 410

Weatherstrip / gasket

150, 250, 190, 290

Transition areas

160

Nose / nasal area

170

sealing area

172

Edge (the inner shell 200 facing)

200

inner shell

210

inner boundary surface

212

indentation

230, 270

support zones

232, 144

Edges / edge regions

272

Edge (the outer shell 100 facing)

280

fixing areas

300

Material web (s)

340

head Start

600

mounting rail

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0304642 A [0003, 0005, 0014]
• EP 0370376 A [0003, 0009, 0011, 0016, 0021]
• DE 102007004081 A1 [0011]
• EP 370376A [0042]

Claims (19)

Panel for making a sectional sheet with an outer boundary surface ( 110 ) of the sectional door leaf and at least partially made of a metallic material outer shell ( 100 ) and one approximately parallel to the outer boundary surface ( 110 ) extending inner boundary surface ( 210 ) of the sectional door leaf and at least partially made of a metallic material inner shell ( 200 ), the outer shell ( 100 ) an upper ( 150 ) and / or a lower ( 190 ) towards the inner shell ( 200 ) and in the longitudinal direction of the panel extending transition region and the inner shell ( 200 ) an upper ( 250 ) and / or a lower ( 290 ) each towards the outer shell ( 100 ) and in the longitudinal direction of the panel extending transition region and the mutually facing edges ( 144 . 232 . 172 . 272 ) of the transition regions are spaced from each other, characterized in that an edge ( 144 . 172 ) at least one transitional area ( 150 . 190 ) of the outer shell ( 100 ) via a possibly self-adhesive and approximately over the entire length of the panel extending material web ( 300 ) of thermally insulating material having a rim facing this ( 232 . 272 ) of a transitional area ( 250 . 290 ) of the inner shell ( 200 ) connected is. Panel according to claim 1, characterized in that the upper ( 290 ) and / or the lower ( 250 ) Transition region of the inner shell ( 200 ) one parallel to the longitudinal direction of the panel and perpendicular to the inner boundary surface ( 210 ) extending support zone ( 230 . 270 ) having. Panel according to claim 2, characterized in that a surface normal to the material web ( 300 ) an angle of inclination of less than 90 °, preferably 60 ° or less, in particular 50 ° or less, with a surface normal to the nearest supporting zone ( 220 . 230 . 270 . 350 ). Panel according to claim 3, characterized in that the angle of inclination is 20 ° or more, preferably 30 ° or more, especially 40 ° or more. Panel according to one of the preceding claims, characterized in that at least one edge ( 144 . 232 . 172 . 272 ) at least one transitional area ( 150 . 190 . 250 . 290 ) folded back on itself. Panel according to one of the preceding claims, characterized in that the edge ( 144 . 172 ) of the upper ( 190 ) and / or lower ( 150 ) Transition region of the outer shell ( 100 ) in the direction of the outer boundary surface ( 110 ) in a substantially planar connection area ( 140 ), wherein the surface normal to the material web ( 300 ) an angle of less than 90 °, preferably 60 ° or less, in particular 50 ° or less, but 20 ° or more, especially 30 ° or more, with the surface normal to the connecting region ( 140 ). Panel according to claim 6, characterized in that in the connection area ( 140 ) extending in the longitudinal direction of the panel groove ( 142 ) with a seal received therein ( 145 ) is formed. Panel according to one of claims 2 to 7, characterized in that between the support zone ( 270 ) at the upper transition region ( 290 ) of the inner shell ( 200 ) and the material web ( 300 ) extending in the longitudinal direction of the panel and for receiving a sealing strip ( 410 ) groove ( 400 ) is formed. Panel according to one of the preceding claims, characterized in that the upper transition region ( 150 ) of the outer shell ( 100 ) together with the upper transition region ( 250 ) of the inner shell ( 200 ) and these transition areas ( 150 . 250 ) connecting material web ( 300 ) extending in the longitudinal direction of the panel projection ( 340 ) which is approximately complementary to a recess extending from the lower transition region ( 190 ) of the outer shell ( 100 ) together with the lower transition region ( 290 ) of the inner shell ( 200 ) and these transition areas ( 190 . 290 ) connecting material web ( 300 ) is determined. Panel according to claim 9, characterized in that by the projection received in the recess ( 340 ) a finger guard for two successive and with respect to a parallel to the longitudinal direction of the panel extending pivot axis pivotally interconnected panels is provided. Panel according to one of the preceding claims, characterized in that one between the shells ( 100 . 200 ) formed cavity at least partially filled with an insulating material, such as a foam, esp. PU foam. Sectional door leaf with a panel according to one of the preceding claims. Sectional door with a sectional door leaf according to claim 12 and guide rails for guiding the door leaf movement between an open position, in which the door leaf preferably in a head above Horizontal plane is arranged, and a closed position in which it is preferably arranged in a vertical plane. Method for producing a panel according to one of claims 1 to 11, in which one on its boundary surface ( 110 . 210 ) resting shell ( 100 . 200 ), esp. the outer shell ( 100 ), with an insulating foam forming, preferably liquid material and the other shell, esp. The inner shell ( 210 ) so at a predetermined distance above the on its boundary surface ( 110 . 210 ) resting shell, that the edges ( 144 . 232 . 172 . 272 ) of the transition areas ( 150 . 190 . 250 . 290 ) of the shells ( 100 . 200 ) facing each other and the opposite edges ( 144 . 232 . 172 . 272 ) of the shells ( 100 . 200 ) before completion of the foaming of the insulating foam-forming material with a material web ( 300 ) are connected together from insulating material. Method according to claim 14, characterized in that the shells ( 100 . 200 ) during charging with the foaming material, positioning and / or bonding by means of the material web ( 300 ) are conveyed in the longitudinal direction and optionally cut to a predetermined length for the production of panels after foaming. Method according to one of claims 14 or 15, characterized in that the transition regions ( 150 . 190 . 250 . 290 ) of the shells positioned at a predetermined distance ( 100 . 200 ) are at least partially received in a positioning device during foaming. A method according to claim 16, characterized in that the positioning device in the form of at least one endlessly circulating positioning chain together with the shells ( 100 . 200 ). A method according to any one of claims 14 to 17, characterized in that the at a predetermined distance with respect to the on the boundary surface ( 210 ) resting shell ( 200 ) shell to be positioned ( 100 ) with at its boundary surface ( 110 ) engaging, preferably magnetic and / or pneumatic holding means is held in position. Method according to claim 14, characterized in that the shell to be positioned ( 100 ) along a predetermined path to the on its boundary surface ( 110 ) resting shell ( 200 ) and the foam-forming material with a in the Absenkbereich between the shells ( 100 . 200 ) arranged loading device is introduced.

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