JPS63245642A - Method and apparatus for producing spherical feed - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application) The present invention produces a spherical food product having an edible stuffing proboscis and surrounded on all sides by a similarly edible skin on which the wrapper rests. In a method for producing a spherical food product stuffed with fruit or fruit pieces, first a flat dough is formed to prepare the skin, the filling is placed on top of the dough, and then the filling is placed on top of the dough; The present invention relates to a method in which the dough forming the skin is placed around the stuffing, and the excess dough is cut off.

(Prior art) The above-mentioned technology for producing so-called fruit sandwich foods, that is, spherical foods made of fruit wrapped in dough, is unique to Australia! i'F146.847. In this known technique, a piece of dough is used to wrap the fruit, which piece of dough is shaped by rotating rollers with dimples and placed around the fruit, and is then pressed against the fruit to wrap it around the fruit. Form a skin that covers all sides.

If the mold is formed rigidly, the irregular shape of the fruit forming the filling often leads to weak spots in the dough skin, which are difficult to handle during subsequent processing, e.g. boiling. Also, when rolling is performed, the appearance of the food may deteriorate. In this well-known technique, since the size of the fruit used as stuffing is relatively easy to change, it is necessary to use a relatively large amount of dough, which is also one of the drawbacks.

(Problems to be Solved by the Invention) An object of the present invention is to easily and inexpensively produce a food product having a stuffing formed into a spherical shape and surrounded by a skin on all sides, without the above-mentioned drawbacks. The object of the present invention is to provide a method for obtaining the same and an apparatus for performing the same.

Means for Solving the Problem A method according to the invention of the type described in the introduction comprises placing a first flat piece of fabric consisting of said skin-forming fabric on an elastic flexible underlayment; At least one piece of stuffing, in particular a fruit or a piece of fruit, forming the filling is placed in the frozen state on top of the piece of dough, and on top of this piece of stuffing there is also a second piece of dough for forming the crust. 2
placing the pieces of dough and further compressing the formation thus obtained by a force acting on the outside of both said pieces of dough;
The force acts on the outside of the first piece of fabric through the elastic flexible underlay and on the outside of the second piece of fabric through the elastic flexible overlay that contacts the outside of the second piece of fabric, and It is characterized in that the first and second pieces of fabric tightly surround the stuffing and are joined together to form a pressed seam. Such a technique makes it possible to effectively achieve the above-mentioned objectives and also to treat the foods in question, such as spherical foods stuffed with fruits or fruit pieces, as well as other foods with the structure in question, such as meat. Eggs etc. stuffed with and cooked can be made into VJ in a simple manner.

According to a preferred embodiment of the method according to the invention, during or after placing the first piece of fabric on the flexible underlayment,
forming at least one cup-shaped recess in the piece of fabric by cup-shape deforming the flexible underlay, and inserting one or more pieces of stuffing into the recess(es); ing. The advantage of this embodiment is that the supply and placement of the stuffing pieces can be carried out in a simple manner, since the pot-shaped recess formed in the first dough piece allows the stuffing pieces to be placed in a simple manner. This is because positioning can be performed reliably.

Furthermore, it is advantageous to use an elastic membrane as the elastic-flexible underlay and, if appropriate, as the elastic-flexible overlay. Therefore, it is possible to place the dough piece on top of the stuffing in a simple manner and apply pressure to firmly press both dough pieces together, even though the stuffing piece is unevenly shaped. As a result, the tendency for weakened spots to develop in the fabric skin is prevented and the wall thickness of the fabric skin can be made relatively thin. Furthermore, the ratio of filling to dough can be set at 1:1.

In order to make the work flow as fluid as possible when carrying out the method according to the invention, in order to form said cup-shaped recesses, a substantially flat piece of fabric or a strip of fabric is initially placed on a flat elastic membrane. The membrane is then deformed into a cup shape, with the piece of fabric sitting on it also being cupped by the pressure acting on the membrane due to its own weight and/or the ambient air pressure. It is designed to be deformed into a shape.

Two elastic membranes which press the dough skin onto the stuffing pieces, in particular forming a robust crushing joint between the dough pieces, and subsequently forming a food product, in which the formation consisting of the stuffing is initially deformed into an approximately hemispherical shape. and then compressed with the membranes with their concave sides facing each other, the two membranes being seamed together until they rest against the fabric in their edge areas, and then compressing the membranes further. when carrying out the preforming, the prestresses during the preforming are removed, so that the compression of said formation takes place by the action of the forces pressing both membranes together and the elastic tensile forces of both membranes themselves. is advantageous.

In order to make the work flow quick and simple, and in particular to carry out the method according to the invention effectively, a first fabric strip is placed on top of the successively arranged elastic membranes and the membrane is placed inside the fabric strip. A series of bowl-shaped depressions are formed using the hollow-shaped mold,
Place pieces of stuffing one after another into the depressions, and then place a second fabric strip 43 on top of this first fabric fabric strip having successively stuffed fabric depressions! and press against the first fabric together with an elastic membrane aligned with the recesses of the first fabric strip, and further cut off excess fabric to separate multiple pieces of the product to be manufactured from the fabric strip. It is more advantageous to do so.

The device according to the invention is characterized in that the device for pressing together the first and dough pieces located on either side of said stuffing and preferably for forming a depression in said first dough piece has a cup-shaped body; An elastic flexible membrane fixed to the edge of the opening is disposed over the opening of the cup, with at least one first cup being provided, and the elastic membrane of the rod being attached to the first piece of fabric. at least one second cup is provided which is adapted to touch the outside and in which the rod approaches a position proximate to the first cup in which the membrane of the first cup is disposed. aligned with and facing the membrane of the second cup, and further such that the second cup is separated from the first cup so that its elastic membrane can contact the outside of the second piece of fabric. It has become. Such a design provides a device suitable for carrying out the method according to the invention, which is relatively inexpensive to manufacture, operates accurately, is simple in construction, and yet operates safely over a long period of time. A device that can be obtained is obtained.

A pressure exchange operatively connected to the cup-shaped body space in a preferred embodiment of the device, which is capable of effectively placing a piece of stuffing on top of the first piece of fabric and wrapping said stuffing with fabric. A device is provided, the pressure transducer providing a cup g! in the tangential direction of the membrane. The pressure inside the chamber is now affected. In this case, it is more effective if the cup-shaped body space is connected to the pressure transducer by a pipe into which an adjustable throttle is inserted.

Furthermore, a more preferable result can be obtained by forming the space of the cup-shaped body whose opening is covered with an elastic membrane into a substantially hemispherical shape.

In a power-efficient device for carrying out the method according to the invention, a plurality of first cups are provided which are driven and circulated over an open channel, and which are provided at a first location of the channel. a filling device for a second passage location located next to the first location in the direction of circulation of the first cup-shaped body; a second feeding device for feeding a second dough piece provided to a third path location next to the second location in the direction of circulation of the cup; , a drive device for a second cup located at a fourth passage location next to the third location, the drive device having a membrane side opposite the membrane side of the first cup. It is characterized in that the second cup can approach or move away from the first cup in a position aligned with the first cup.

Embodiment The part of the apparatus for carrying out the method of the invention shown in FIG. 1 a to h has a first cup-shaped space 3.4. opening 5 of cup 1.2;
6 are each arranged with an elastic flexible membrane 7, 8 which is fixed to the edge of the corresponding opening 5.6. The cup-shaped bodies 1, 2 further include a space 3.

4, which can be connected by means of piping (not shown) to a source of negative pressure, to a source of positive pressure or to the ambient atmosphere, and if necessary to provide a negative pressure in the space of the cup 1, 2. pressure, positive pressure or pressure corresponding to ambient air pressure. This cup 1.2 is moved close to each other in the various stages of the method to be carried out in a coaxial position such that the openings 5.6 face each other, for example as shown from f to h in FIG. Or they can move away from each other.

In the embodiment of the method according to the invention shown in FIG. A piece of dough 14 having a size approximately corresponding to the size of the sitter is placed on top. At this point, the #117 is made approximately flat by suitably adjusting the pressure in the space 3 of the cup-shaped body 1 and the volume of the medium located in the space 1X1G. The medium is then discharged from the space 3 through the connecting part 9, preferably by connecting said connecting part 9 to a source of negative pressure, so that the membrane 7 is removed from the fabric thereon as shown in FIG. 1C. It is made to be transformed into a bowl shape together with the body 14.

In the recess 15 thus formed in the fabric body 14, a stuffing 16 consisting of one or more parts is placed, as shown in d of FIG. On top of this first piece of dough 14 and the stuffing 16 a second piece of dough 17 is then placed (FIG. 1e), and in this way the resulting material is obtained from the two pieces of dough 14, 17 and the stuffing 16. The formed structure is compressed by a force acting from the outside of both pieces of dough. For this purpose, as indicated by f in FIG. 1, a second cup 2 having a membrane 8 similar to the seventh cup 1 is transformed into a bowl shape by expelling the medium from its space 4. is,
At this time, as indicated by the arrow 20, the cup 2 moves towards the cup 1 until its edge rests on the piece of fabric 17, pressing against the piece of fabric. After the edge of the bar 2 has rested on the fabric piece 17, the spaces 3. of both cups 1.2.
4 is blown with a medium, which in most hourly cases can be done by connecting said air @ 3.4 to the ambient atmosphere, and thereby both fabric bodies 14.17 are blown into said 1117, 8 are pressed against each other by the force resulting from the elasticity of the two fabric pieces 14, 17, and the two fabric pieces 14, 17 are then pressed strongly against the massive stuffing 16, so that they tightly surround the stuffing 16. At the same time, the cups 1.2 are brought into contact with each other and pressed, so that a crush seam 21 is formed at the edge of the cough cup that connects the two fabric pieces 14.17 to each other, and the pressed The rest of the fabric pieces located outside the collapse seam can be allowed to fall off naturally or be cut by additional equipment fi (not shown). This step of the method is shown at 9 in FIG. The two cups are then separated again in the direction of the arrow 22 (signifying the upward movement of the cup 2) at h in FIG. Lifted from the cup 1 by the resulting force (which tends to flatten the membrane), the shaped food product 23 is placed on top of the WA 7, and the shaped food product 23 is placed on top of the WA 7, as shown in FIG. 1h. You can now take it out and use it.

In another embodiment of the method according to the invention, the cup 1.
The operation is carried out without previously bowl-shaping the membrane 7.8 provided for 2. In this case, the cup 1 formed as in FIG. The dough piece 14 is placed as shown below.
In addition, the padding 16 is placed on the front 14 (61 in FIG.
) Furthermore, a second piece of dough 17 is placed on top of this (11 in FIG. 1). Subsequently (FIG. 1 fl) Ill presses the cup 2, which is likewise essentially flat, against the cup 1, and the formation consisting of the fabric piece 14.17 and the stuffing 16 is then removed. However, the force acting on the outside of both pieces of fabric, i.e. the void 1ffi3°4 of the cups 1 and 2, is m relative to the surrounding atmosphere.
m, it is compressed by forces resulting from the elasticity of 1117.8 and possibly the elasticity of the medium in said space. When this force is applied, both fabric pieces 14.17 are pressed against the stuffing 16 until they tightly surround the stuffing and a crushed seam 21 is formed which interconnects both fabric pieces 14.17. (01 in Figure 1). Subsequently, both cups 1.2 are pulled again and a food product of the same shape as shown in FIG. 1h is formed, which can then be removed and used.

Another embodiment is to carry out the operation as described in the cases a to e of FIG. This is done by first pressing the flat l118 as shown in the first f2 against the formation consisting of both fabric pieces 14.17 and the stuffing 16 located at When the cups 1.2 are brought together, the dough bodies 14, 17 are already pressed against the stuffing 16, and at the same time the stuffing 16 is easily placed into the dough body 14, which has been previously shaped into a pot shape. This gives you the advantage of being able to do it.

Another embodiment of the method according to the invention is characterized in that said fabric body 14.1
This is done by creating a positive pressure in the space 3.4 of the cups 1, 2 in order to compress the formation consisting of the filling 16 and the filling 16, in which case the space 3.4 is, for example, connected to the connecting part 9. , 1o and appropriate piping (not shown) to a source of positive pressure. The use of compressive forces due to positive pressure in the space of the cup is particularly suitable for eliminating air from between the dough pieces and thus bringing them into intimate contact with the mass filling. In this case, the use of a replaceable membrane is more advantageous than when the compressive force is often obtained only by the elasticity of the membrane, and positive pressure is introduced. In this case, it would be advantageous if the magnitude and duration of the pressing force applied from time to time could be easily adapted to different working conditions as required.

In the device shown diagrammatically in FIG. 2, a plurality of rod-shaped bodies 1 are provided, which cup-shaped bodies are moved step by step over an annular eight channel 30 by means of a suitable drive (not shown). I am forced to do it. The cup 1 is formed similarly to the cup shown in FIG.
is provided in the cough duct, and when the cup is circulated on the annular passage 30, the connection part leading to the space of the cup is sometimes touched in a sealing manner, and the connection duct is connected to a source of negative pressure and It is connected to a source of positive pressure, so as to sometimes generate negative or positive pressure within the space of the cup 1 as it circulates. Above the annular passage 30 is a first feed Hlii3 for the dough pieces.
3 is arranged, the feeding device is such that the circulation cup 1 is connected to the annular passage 3.
When the first location 34 of 0 is reached, a strip-shaped piece of fabric 14' is placed on this cup-shaped body. The second point of the circulation channel 30 which is located next to this first point 34 in the direction of circulation 35 of the cup 1
The filling 16 to be placed in the food to be manufactured is placed in the location 36.
A feeding device 37 is arranged, the stuffing being placed in the recess 15 previously formed in the fabric strip 14'. The recess 15 is formed by suctioning the medium in the space 3 of the cup 1 and suctioning the membrane 7 of the cup, which suction applies a source of negative pressure to the connecting part leading to the space of the cup. This is done by a connecting pipe line 31. A second fabric strip 17' is placed onto the circulating force 16 by means of a further feeding device 38. A plurality of second cup-shaped bodies 2 are arranged at a fourth position 41 of the circulation passage 30, which is located next to the third position 40 of the circulation passage 30 in the circulation direction 35, and these cup-shaped bodies are mutually connected to one another. It is moved towards die 42. The membrane side of the cup-shaped body 2 is directed toward the membrane side of the first cup-shaped body 1,
The die 42 is also moved up and down in the direction of a double-headed arrow 43, and for this purpose the die 42 is connected to a drive device (not shown). The space of the cup 2 can be connected to a source of negative pressure and a source of positive pressure through a connecting pipe 44, thus creating a negative or positive pressure in the space of the cup 2, or as desired, controlling the surroundings. A pressure corresponding to the atmosphere can be generated. During operation, the cup-shaped bodies 1 guided on the circulation path 30 are each intermittently pushed over a certain section, that is, a section corresponding to the number of cup-shaped bodies 2 arranged one after another on the die 42 in the circulation direction 35. i.e., in the case shown in FIG. 2, it is pushed over a section corresponding to four cups. Therefore, also when each movement cycle is carried out, the food product to be produced is completed at the four-point opening by means of the rod 2 arranged in said die 42, and in this way the output of the device is to produce only one cup 2. This is a significant improvement compared to when the work is done by The reason for this is that it takes a certain amount of time to compress the formed product consisting of the first and second dough pieces and the stuffing between them to form a spherical food product, and reducing this time any further will reduce the quality of the product. This is because it causes a decrease in the amount of water. The output of said device is further arranged in said device with a plurality of rows of circulating goblets arranged in parallel, said rows being located one behind the other when viewed perpendicular to the plane of FIG. Production can be increased by providing a body 2 and a feeding device configured with corresponding dimensions, by means of which dough pieces and stuffing can be fed. In the case of the apparatus shown in FIG. 2, during operation, negative pressure is maintained in the space of the cup-shaped body 1 until just before the rod-shaped body 2 comes into contact with the piece of dough 17', and then the connecting pipe is closed. Road 32
It is advantageous to generate a positive pressure by supplying the medium through the cup 1 into the space of the cup 1, and likewise in the space of the cup 2, in which case the fabric and Depending on the nature of the stuffing, the membrane can be cupped or flattened by applying a negative pressure to the membrane in the space of the cup 2 before the contact between the rod 2 and the fabric piece 17' occurs. You can make it so that

By creating a positive pressure in the space of the cup 1.2, the air present between the fabric pieces 14', 17' is effectively forced to the outside.

When the pieces of fabric 14', 17' are compressed, they are crushed or glued together at the edges of the bar, and at the same time the excess fabric is cut off. In the illustrated case of working with a strip of fabric, this excess fabric is led out in the form of a perforated strip of fabric 45. Target food piece 23 shaped into a spherical shape
The cup 2 is removed from the membrane of the cup 1 which has moved upwards.

The membrane attached to the rod is expediently made of rubber, in this case natural rubber of the available types, from a wide range of elasticity, durability, adhesion and anti-adhesion properties, depending on the requirements of the time. Rubber and synthetic rubber are selected.

In the apparatus shown in FIG. 2, the feeding device or feeding device! ! 33. Strip-shaped fabric pieces 14', 17' from 38
is prepared for further processing. If necessary, the small pieces of dough, which are adapted to form one or a few spherical food products, are guided to the next processing station, for example by means of a suitable cutting device to cut the moving strip of dough. be able to.

As mentioned above, the force required to compress the fabric piece and filling can be generated by the elasticity of the sill and the medium within the space of the cup. A similar effect occurs in the case of the cup shown in FIG. 3, which consists of a ring 50 inserted with a bed 51 of elastic flexible material and similar to that shown in FIG. Elastic Il! It has 7.

Changes in the shape of the membrane attached to the cup 1.2, such as the formation of a bowl-shaped bulge in the cup, and the force acting on said membrane from the space of the cup 1, increase the spatial volume of the cup 1.2. Occurs due to change. Embodiments in this regard are shown in FIGS. 4 and 5, in which a piston 52 is arranged in the cup 1, which piston is moved during operation. A reciprocating movement can be carried out in the direction of the double-headed arrow 53, whereby the volume of the cavity a3 of the cup 1 with the membrane 7, and thus the pressure in this space 3, is rounded and the membrane 7 correspondingly increases. Becomes deformed. In this case, the reciprocating movement of the piston 52 is provided by a suitable drive, for example by a curved guide in the case of a movably arranged cup 1, but other types of drive can also be used for such a piston 52. , for example, a hydraulically driven system is also conceivable. The same holds true for the embodiment shown in FIG. 5, in which the space 3 of the cup 1 faces downwards and is closed off by a stopper oval 55, and the intermediate part 56 of the membrane is adapted to be able to perform a lifting and lowering movement in the direction of the double-headed arrow 57 by means of a suitable drive.

[Brief explanation of the drawing]

1a to 1h show successive steps of an embodiment of the method according to the invention and details of the apparatus for carrying out the method; C1 to 91 of FIG. 1 show the method according to the invention; f2 in FIG. 1 shows a step in a further embodiment of the method according to the invention, a in FIG.
2 is a domestic side view of the apparatus provided for carrying out the method according to the invention; FIGS. 3, 4 and 5 correspond to the description in FIG. A diagram showing a modification of the K11 portion shown. 1... First cup-shaped body, 2... Second cup-shaped body, 7, 8...
・Flexible membrane, 14.14'...First fabric piece, 15...
・Indentation, 16...Filling, 17.17'...Second
Dough piece, 23... Food, 30... Circular passageway, 33.
...Feeding device, 37... Feeding device, 42... Dice.

Claims (15)

[Claims] (1) A method for producing a spherical food product having an edible filling and surrounded on all sides by a similarly edible skin on which the filling is placed, in particular a spherical food product stuffed with fruit or fruit pieces. a method of manufacturing, first forming a flat dough to prepare the skin, placing the stuffing on top of the dough, then placing the dough forming the skin around the stuffing; and wherein excess fabric is cut off, a first flat piece of fabric consisting of the fabric for forming the skin is placed on an elastic flexible underlayment, and a first flat piece of fabric is placed on top of this piece of fabric. At least one piece of stuffing, in particular a fruit or a piece of fruit, forming the stuffing is placed in the frozen state, and on top of this lumpy stuffing is placed a second piece of dough, which likewise consists of a dough for forming the skin. ,
Furthermore, the formation thus obtained is compressed by a force acting on the outside of both said pieces of dough, which force is transmitted through said elastic flexible underlay to the outside of the first piece of dough and to the outside of said second piece of dough. The elastic flexible overlay is applied to the outside of the second piece of fabric through an outwardly tactile overlay, and this force causes the first and second pieces of fabric to tightly surround the filling and A method characterized in that the second fabric pieces are joined together to form a collapsed seam. (2) The method according to claim 1, wherein at or after placing the first piece of fabric on the elastic flexible underlay, the elastic flexible underlay is deformed into a bowl shape. A method comprising forming at least one pot-shaped depression in a piece of dough and inserting one or more pieces of stuffing into this depression(s). (3) A method according to claim 1 or 2, in which an elastic membrane is used as the elastic-flexible underlay and optionally as an elastic-flexible overlay, respectively. (4) A method according to claims 2 and 3, in which a substantially flat piece or strip of fabric is placed on an initially flat elastic membrane to form the pot-shaped depression. , this membrane is then deformed into the shape of a pot, and the piece of fabric that rests on it is likewise potted by the pressure acting on said membrane due to its own weight and/or the ambient air pressure. A method that allows it to be transformed into a shape. (5) A method according to claim 3 or 4, in which the formation consisting of two pieces of fabric and a stuffing located between them is formed into two elastic membranes which are first deformed into a substantially hemispherical shape. , with their concave sides facing each other, the membranes being brought into close proximity to each other until they rest against the fabric in their edge areas, and then further compressing the membranes. Sometimes the prestress during preforming is removed, so that the compression of the formation takes place by the force pressing both membranes together and by the action of the elastic tensile forces of both membranes themselves. How to become familiar. (6) In the method according to claim 4 or 5, a first strip-shaped fabric is placed on a plurality of elastic membranes arranged one after another, and the membrane is placed in the strip-shaped fabric. Successive bowl-shaped depressions are formed by the pot-shaped deformation, into which filling pieces are placed one after the other, and subsequently on top of this first strip of fabric having the stuffed fabric depressions one after the other. A second strip-shaped fabric is placed, and the first
Pressed against the first belt-shaped fabric together with an elastic membrane that aligns with the recesses of the belt-shaped fabric, and further, excess fabric is cut off;
A method in which each piece of the product to be manufactured is thus cut from a strip of fabric. (7) In an apparatus for carrying out the method according to any one of claims 1 to 6, the first and second pieces of dough located on both sides of the stuffing are mutually moved. The device for pressing and preferably forming an indentation in said first piece of fabric has a cup-shaped body, over an opening of said cup-shaped body an elastic flexible member fixed to the edge of said opening. a membrane is placed, at which time at least one first cup is actuated;
the elastic membrane of the cup is adapted to rest on the outside of the first piece of fabric, and at least one second cup is actuated, the cup being proximate to the first piece. position, in which the membrane of the first cup is aligned and facing the membrane of the second cup, and the second cup separates from the first cup and its elasticity increases. A device adapted to allow a membrane to rest on the outside of said second piece of fabric. (8) The device according to claim 7, further comprising a pressure transducer operatively connected to the cup-shaped body space;
A device in which the pressure in the cup space behind the membrane is influenced by the pressure transducer. (9) The device according to claim 8, wherein the cup-shaped body space is connected to the pressure converting device by a pipe into which an adjustable throttle is inserted. (10) The device according to claim 8 or 9, wherein the adjustable diaphragm has a closable flow passage that opens into free space. (11) In the device according to any one of claims 7 to 10, a space of the cup-shaped body whose opening is covered with an elastic membrane. A device that is formed into an almost hemispherical shape. (12) In the device according to any one of claims 7 to 11, a plurality of first cup-shaped bodies are provided which are driven and circulated on a closed passage, Furthermore, a feeding device for a first piece of dough is provided for a first location of the passage, and a feeding device for a second piece of dough is provided for a second passage location that is located next to the first location in the direction of circulation of the first cup. a second feeding device for feeding a second piece of dough, which is provided for a third passage location next to the second location in the direction of circulation of the first cup; , the third cup in the circulation direction of the first cup-shaped body
a drive device for a second cup disposed at a fourth passage point next to the second cup, the second cup having a membrane side opposite the membrane side of the first cup; Apparatus wherein the two cups can be moved toward or away from the first cup in a position aligned with the first cup. (13) In the device according to any one of claims 8 to 12, the space of the first cup-shaped body located behind the membrane serves as the first location of the circulation passage. A device adapted to be evacuated in an area located between the fourth location and the fourth location. (14) In the device according to claim 13,
The space of the cup-shaped body located behind the membrane is the fourth part of the circulation passage.
A device adapted to receive positive pressure in a specific area. (15) The device according to any one of claims 7 to 14, wherein the elastic membrane is made of rubber.