DE102015009334A1 - Absorbent insert for food - Google Patents

Abstract

The invention relates to a sucker for food, a process for their preparation and a use of this absorbent pad. The absorbent pad has at least two layers of material (7, 8). The absorbent insert has a suction region (1), in which an absorber material (2) is arranged between the layers of material (7, 8). At least one suction region (1) is followed by a buffer region (3). The buffer area (3) forms a volume reserve for swollen absorber material (2).

Description

The invention relates to an absorbent insert for foods having at least two layers of material, wherein the absorbent insert has a suction region in which an absorber material is arranged between the layers of material.

Such absorbent pads are used for example as a meat-tray pads or meat pads. The absorbent pad has the task of absorbing liquids escaping from meat, fish or poultry products. As a result, the food is longer lasting, because a bacterial proliferation is reduced. Furthermore, the appearance of the food is more appealing.

In the DE 10 2005 032 432 A1 describes a sucker for food with an upper cover layer and another lower cover layer. Between the cover layers is a liquid absorption layer. The cover layers are films which have a three-dimensional structure. They have fluid-permeable openings. The absorbent pad is closed at its outer edges.

In the EP 1 640 290 B1 describes a suction pad for meat or poultry products that absorbs leaking fluids from these products. It consists of two outer foils and an inner absorbent core. The absorbent core comprises cellulose fibers. He is provided with a superabsorbent, which is fibrous. The absorbent pad is provided with liquid-permeable openings in the foils. It is used a film that is permeable.

In most meat pads today short-fiber pulp fibers (Air Laid material) are used. From these fibers can be released from the meat pad and stick to the food. Furthermore, in the processing of roll goods, fiber dust occurs during unwinding of the roll and when cutting the pads. Often, therefore, the production must be turned off to remove the resulting cutting dust.

Conventional absorbent pads often have four open sides. Absorbing the liquid expands the absorber material and exits at the four open sides. A welding of these edges is often not possible with conventional absorbent pads, since these are made of kurzfaserigem pulp / pulp fibers.

To prevent the escape, describes the EP 2 364 927 A1 An absorbent insert for food, in which the entire bed is completely sealed in a foil bag. The absorbent body is enclosed by a tubular bag, which is formed from a one-piece film. This brings an additional step and thus increased production costs of the absorbent insert with it. The tubular bag has an internal volume for expanding the absorbent body when absorbing liquids. This is a fixed internal volume that does not react specifically to different amounts of absorbed fluid.

The WO 2014/198391 A1 describes an absorbent composite with superabsorbent particles. The superabsorbent particles are positioned between two layers of material. There are areas with and areas without superabsorbent particles. The layers of material are joined together in areas without superabsorbent particles, so that the two layers of material form a chamber in which the superabsorbent particles are enclosed.

Conventional absorbent pads according to the prior art often use meat pads which build on cellulose fibers in the absorbent core. In order to prevent a direct contact of the absorbent body to the food, the absorbent body is provided with a film. Often, this "foreclosure" is only partial. It is thus still possible that short fibers or superabsorbents come into contact with the food.

In the arrangement of absorber material between two layers of nonwoven material it is necessary in conventional absorbent pads of the prior art to equip them with hypophilizing agent so that the liquid passes through the layers of material to the absorber material. Such hypophilizing agents are harmful to health. Numerous variants of these hypophilizing agents are therefore not permitted for direct food contact.

The object of the invention is to provide a suction pad for food that reacts flexibly to different amounts of liquid. In this case, a contact of the absorber material with the food or the cultivation of fibers in the food should be effectively prevented. The absorbent pad should be harmless to health and to absorb accumulating liquids in a reliable manner. In addition, the absorbent insert should be characterized by a cost-effective production. Furthermore, a long service life should be given. The absorbent pad should be easy to process and roll in order to ensure efficient further processing. It is another object of the invention to provide a method that provides liquid deposits in a cost effective manner with a high quality. The process should get along with as few processing steps.

According to the invention this object is achieved by a suction pad having the features of claim 1, a food carrier having the features of claim 22, a method and a use with the features of claim 15 and 23, respectively. Preferred variants are set forth in the subclaims.

According to the invention, the absorbent pad has a buffer area which adjoins the suction area. This buffer area serves to form a volume reserve for swollen absorber material. The suction area has a certain capacity for swollen absorber material. If the absorber material swollen in the suction region between the two layers of material exceeds this capacity, the buffer area is available to additionally absorb swollen absorber material. This creates a suction pad that reacts flexibly to different amounts of fluid. If liquid quantities are determined, the absorber material swells only so much that the absorption capacity of the suction area is sufficient. If larger amounts of liquid accumulate, the swelling volume of the absorber material exceeds the capacity of the suction area and expands into the buffer area, without there being any escape of absorbent material from the absorbent pad. The buffer area thus provides an additional safety factor for the absorbent pad and effectively prevents leakage of absorbent material from the absorbent pad. At the same time, it ensures flexible use.

In contrast to conventional suction pads of the prior art, this volume reserve is not formed by a tubular bag or a film but is provided by an area between the two layers of material. This allows a quick and effective release of the buffer area in the case of a large volume of swollen absorber material.

The buffer area immediately adjoins the suction area. The areas merge seamlessly so the volume is released quickly and reliably. Between the two areas, there are no separations by webs, welds, seams or the like.

In a particularly favorable embodiment of the invention, the buffer area is arranged around the suction area. In this variant, for example, in the middle of the suction area, which may be formed, for example, rectangular or square, this suction area is surrounded by a buffer area on all sides. In this variant too, the buffer region directly adjoins the suction region, without disturbing separations such as, for example, weld seams or the like.

In a particularly favorable embodiment of the invention, the buffer area has connection points between the material layers. According to the invention, the connection forces of these connection points are below a limit value, so that the connection points are opened by a swelling pressure of the absorber material which acts laterally from the suction region into the buffer region. In the non-activated state of the buffer area is connected via the connection points, so that a compact design of the absorbent insert is guaranteed and the two layers of material adhere to each other flat. If the release of a volume reserve is required, the connection points in the buffer area open according to the invention and release the volume reserve for the swollen absorber material, which can no longer be absorbed in the suction area.

Preferably, the connection points are a multiplicity of lattice-like connection points. Depending on how big the swelling pressure is and how much swollen absorbent material needs to be buffered, a different number of joints pop up. With a large amount of swollen absorber material to be buffered, many junctions burst. If only a small amount of absorber material needs to be buffered, only a few joints will burst. As a result, an extremely flexible absorbent insert is created, which is specifically absorbed to different amounts of Liquid can react and which always prevents leakage of swollen absorber material effectively through the flexible buffer area.

In a preferred variant of the invention, the suction region also has identical connection points between the material layers. Again, the connection forces are adjusted so that they are below an opening limit, so that the connection points can be released by a corresponding swelling pressure of the absorber material. As long as no liquid accumulates, the material layers in the suction area are connected in a planar manner with the connection points so that the free-flowing absorber material is fixed between them. Preferably, these are also grid-like arranged point-like surfaces. If the food dispenses liquid, the suction area is activated and the absorber material absorbs the liquid and swells. When swelling the absorber material, the joints are burst open because the connection forces are below an opening limit by the swelling pressure of the absorber material.

In order to ensure such an opening limit, it has proven to be advantageous if the connection forces are below a limit of 10 N / 5 cm, preferably below a limit of 5 N / 5 cm, in particular below a limit of 2 N / 5 cm.

The joints are preferably formed point-like and are formed in particular by frusto-conical body.

To be particularly favorable, it has been found that the ratio of all surfaces of the joints to the total area is less than 10%, preferably less than 5%, in particular less than 2%. This ensures a reliable opening of the joints, if the swelling pressure of the absorber material is too large. This ensures a fast and efficient release of a volume reserve.

In a particularly advantageous variant of the invention, at least one material layer consists of a fleece. In particular, a hydroentangled Endlosfilamentvlies the company RKW SE (Product Group HyJet ^®) has proven to be favorable. This prevents individual fibers from dissolving out and attaching to the food. This plays an important role, especially for safety and health reasons.

It is thereby possible only by the use of a special hydroentangled Endlosfilamentvlieses (HyJet ^®) to form layers of material, which lets through the liquid obtained the food quickly and in sufficient quantity to the absorber material without harmful Hypophilierungsmittel are required. Alone on the capillarity of the spaces between the fibers, it is inventively possible to introduce the liquid to the absorber material.

As a material for the production of continuous filaments spinnable polymers such as polyester, PLA, polyolefins have been found to be suitable.

In a particularly favorable embodiment of the invention, a nonwoven made of hydroentangled polypropylene continuous filaments is used. At the junctions some fibers of the contacting layers are partially melted by the en- ergy introduced thereby connecting with each other. As a result, connection points are created, which connect the material layers in a reliable manner without liquid and quickly open the connection points for release of a volume reserve in case of an attack of liquid and thus a swelling of the absorber material.

To ensure a sufficient and rapid transport of the resulting liquid through the layers of material to the absorber material nonwovens having a basis weight of less than 100 g / m ² , preferably less than 70 g / m ² , in particular less than 60 g / m ^{2 have} low proved. The basis weight of the nonwoven material is preferably more than 5 g / m ² , preferably more than 10 g / m ² , in particular more than 20 g / m ² .

When used as a packaging material in the food industry, material layers of nonwovens have proven particularly favorable, in which the filaments have a thickness of more than 0.1 μm, preferably more than 1 μm, in particular more than 10 μm. Preferably, filaments for such nonwoven fabrics having a thickness of less than 200 microns, especially less than 150 microns, preferably less than 70 microns prove to be particularly suitable. In a particularly advantageous embodiment of the invention, the filaments are between 10 and 70 microns. This will ensure a good liquid transport and sufficient Ensures filament stability, so that there is no breakage of the fibers and an accumulation of the food.

To produce the absorbent pad according to the invention, a defined application of absorber material takes place on at least one material layer. This forms areas that are covered by absorber material and areas that remain free of absorber material. Subsequently, this material layer or the absorber material is covered with at least one further material layer. The two material layers are connected with each other.

The connection points, which open by the swelling pressure of the absorber material to release a volume reserve, are preferably formed as spot welding surfaces, in particular by ultrasonic welding. For example, with thermobonding by calender rolls.

The engraving depth of the connection points is greater than 0.2 mm, preferably greater than 0.5 mm, in particular greater than 0.8 mm.

In addition, it proves to be particularly favorable if the number of connection points which open due to the swelling pressure of the absorber material is less than 20 pieces / cm ² , preferably less than 10 pieces / cm ² .

The individual pressing surfaces of the connection points are preferably less than 1.0 mm × 1.0 mm, preferably less than 0.8 mm × 0.8 mm.

The absorber material is preferably arranged in powder or granular form between the layers of material.

Further features and advantages of the invention will be described by way of examples and with reference to figures.

Showing:

1 a schematic plan view of a suction pad,

2 a schematic sectional side view through a non-activated absorbent pad,

3 a schematic side sectional view through an activated absorbent insert,

4 an inactivated absorbent pad with layers of continuous filament nonwoven fabric,

5 a suction pad with activated suction area at material layers of continuous filament fleece,

6 a suction pad with activated suction area and activated buffer area with material layers made of continuous filament fleece,

7 a schematic representation of a plant for the production of absorbent pads,

8th Weld spikes of a spiked roller,

9 a grid-like arrangement of the welding spikes,

10 a bonding point of a fused continuous filament nonwoven material layer.

1 shows a suction pad for food, which has a suction area 1 with absorber material 2 having. The absorber material 2 is shown schematically in the form of black dots. The suction area 1 is centrally located in the absorbent insert and executed rectangular in the embodiment.

The suction area 1 is from a buffer area 3 surround. The buffer area 3 contains no absorber material 2 and serves to form a volume reserve for swollen absorber material 2 , To the buffer area 3 closes a border area 4 at. The outer edges of the absorbent pad are lined with joints 5 against the escape of absorber material 2 locked.

In the embodiment according to 1 are both the suction area 1 , the buffer area 3 as well as the border area 4 with connection points 6 Mistake.

The following is an example of the maximum volume of the suction area 1 or the buffer area 3 calculated: The inner rectangle as shown in 1 represents the suction area occupied by SAP 1 represents.

Edge lengths:

• Narrow side = a
• Long side = b

The middle rectangle as shown in 1 sets the buffer area 3 to the maximum extent of the pad.

Edge lengths:

• Narrow side: A1
• Long side: B1

The outer rectangle as shown in 1 represents the external dimensions of the single pad.

edge lengths

• Narrow side: A
• Long side: B

If the composite comes into contact with an aqueous solution, the absorber material stored between the nonwoven layers increases 2 this liquid and thereby increases its volume.

The following formula calculates the maximum volume of each zone (shown as rectangles in the drawing above). It is assumed that all bonding points, inside the area to be calculated, are released by the swelling power of the superabsorber.

• • SAP Menge = M1(g)
• • Absorptionsfaktor (aufgenommene Wassermenge (cm³)/SAP Menge (g)) = F1(cm³/g) M1 = V / F1

The volume of the inner pad area (SAP occupied area) can now determine the maximum amount of absorber material 2 be determined for this area.

• • SAP quantity = M1 (g)
• Absorption factor (amount of water taken up (cm ³ ) / SAP amount (g)) = F1 (cm ³ / g) M1 = V / F1

Example calculation:

• SAP occupied area:
• a = 7.5 cm; b = 11.0 cm
  
  V = 139 cm ³
• Absorbance factor SAP in water: 100 g / 1 g
  
  M1 = 1.39 g

2 shows a schematic side sectional view through a suction pad. The absorber material 2 is still in the inactive, dry state and has not taken any liquid. The absorber material 2 is between an upper material layer 7 and a lower material layer 8th in the suction area 1 arranged the absorbent pad.

To the suction area 1 closes a buffer area 3 on, in the representation according to 2 purely schematically from two material layers 7 . 8th there is no absorber material between them 2 is arranged. To the buffer area 3 closes a border area 4 at.

Also at the edge area 4 is located between the upper material layer 7 and the lower material layer 8th no absorber material 2 ,

In all three areas 1 . 3 and 4 are the upper material layer 7 and the lower material layer 8th with connection points 6 connected to each other in 2 are shown purely schematically as solid black lines.

3 shows the absorber material in the swollen state. The connection points 6 have themselves both in the suction range 1 as well as in the buffer area 3 solved. The buffer area 3 thus serves to form a volume reserve for the swollen absorber material 2 , Only in the border area 4 are the connection points 6 not yet solved.

4 shows a suction pad for food with an upper material layer 7 and a lower material layer 8th consisting of a hydroentangled endless filament nonwoven.

It is a hydroentangled spunbonded polypropylene with continuous fibers (RKW SE HyJet ^®) having a basis weight exceeding 20 g / m ² and less than 60 g / m ^2.

According to the invention, in contrast to conventional absorbent pads according to the prior art, the nonwoven fabric must not be equipped hydrophilic. The use according to the invention of the nonwoven fabric for the formation of layers of material for the absorbent inserts makes it possible to dispense with hypophilizing agents (lubricants).

In the material layers according to the invention 7 . 8th the liquid passes through the capillarity of the spaces between the fibers to the superabsorber alone. In the absorbent pads according to the invention particularly narrow cavities are formed between the fibers of the continuous filament nonwoven, which have a capillary action, so that the liquid obtained at the food alone by capillary effects to the absorber material 2 is transported without the need to treat the material layers with chemicals that are harmful to health in the food.

The fiber structure, ie the openness of the nonwoven fabric as well as the degree of entanglement of the individual fibers can be specifically influenced and controlled by the process parameters of hydroentanglement in order to make the loops generated by the water jet larger or smaller or firmer or looser. This is done by varying the water pressure and / or the amount of water and / or the number and arrangement of the water jets. Preferably, the material layers 7 . 8th the absorbent pads according to the invention with two Wasserstrahlinjektoren per page produced. The sum of the pressures are about 220 bar on the first side and about 290 bar on the second side.

At the in 4 the situation shown is the absorber material in the unswollen state, without absorbed liquid. In the absorber material 2 it is a superabsorber. As superabsorbents (DE Evonik Stockhausen GmbH,) is in the exemplary embodiment FAVOR PAC ^® 300 and FAVOR PAC ^® 230 selected.

The absorbent insert has a suction area 1 on, in between the material layers 7 . 8th absorber material 2 is arranged in the unswollen state. The suction area 1 is from a buffer area 3 surrounded, no absorber material 2 in the unswollen state between the material layers 7 . 8th having.

The material layers 7 . 8th are with connection points 6 connected with each other. At the connection points 6 These are bonding points where the fibers of the continuous filament nonwoven material layers 7 . 8th be melted by means of discrete bonding so that the two material layers 7 . 8th stick to each other.

The connecting points designed as bonding points have one opposite the other nonwoven fabric of the material layers 7 . 8th compacted ball structure. At the connection points 6 grasps the tangle structure of a material layer 7 into the tangle structure of the other material layer 8th one.

This bonding of the joints 6 takes place in the embodiment by ultrasound. The connection points 6 are made by means of a welding spiked roller and a sonotrode (counter electrode). The production of the joints according to the invention is carried out with welding spikes, which are designed as truncated cones. A lattice-like arrangement of the welding spines forms the mirror image of the arrangement of the connection points 6 ,

At the in 5 As shown, the absorbent pad has absorbed so much liquid that the absorber material 2 swollen and the connection points 6 in the suction area 1 has solved. At the in 5 The situation shown is the swelling pressure of the absorber material 2 Although so large that the joints in the suction area 1 be solved, the connection points 6 in the buffer area 3 however, are still present, so in the buffer area 3 the material layers 7 . 8th stick together.

At the in 6 The situation shown now has the absorber material 2 absorbed more liquid so that it is even more swollen and has further increased its volume. Which is attached to the suction area 1 immediately following buffer area 3 now forms a volume reserve for the swollen absorber material 2 ,

The swelling pressure of the absorber material 2 is now so big that now the joints 6 in the buffer area 3 are solved.

According to the invention, the buffer area has to do this 3 joints 6 between the material layers 7 . 8th on, their connection forces below an opening limit by the swelling pressure of the absorber material 2 lie. Only the connection points 6 in the edge area are not yet solved.

The suction power of the absorber material 2 decreases with increasing NaCl concentration. For different types of meat (pork / poultry) are different amounts of absorber material 2 integrated into the absorbent pad. When used properly, the volume of the suction area is 1 sufficient to accommodate the specified amount of liquid without the buffer area 3 is needed. The buffer area 3 serves as an emergency reserve, for example, if there is a lower NaCl concentration than expected.

7 shows a schematic representation of a plant for the preparation of the absorbent pad according to the invention. From a roll becomes a first material layer 7 unwound, which forms a carrier layer and an in 7 not shown transport bank is supplied. By means of a dosing unit 9 becomes absorber material 2 on the first material situation 7 applied.

The application of the absorber material 2 can be done according to different process variants. In a first variant, the absorber material from the dosing unit 9 applied over the entire surface. Absorber-material-free areas are defined by a suction of the absorber material 2 and / or generated by a cover.

In an alternative variant, a Rapportablage the absorber material 2 by means of stencils and / or anilox rollers for the formation of absorbent material-free areas and areas of absorber material 2 are covered.

Another material situation 8th is unwound from a roll to cover the first material layer 7 and the absorber material formed as a superabsorbent powder 2 ,

A deflection and pressure roller 10 compacts the material layers 7 . 8th , The sandwich arrangement of material layers 7 . 8th and absorber material 2 arrives at a station 11 for generating the connection points 6 ,

The station 11 includes a welding spiked roller 12 and a sonotrode (counterelectrode) 13 , The spiked roller 12 has numerous spikes that bond the sandwich using UHF welding. The outer contact surfaces of the welding spikes press the fleece material layers 7 . 8th on each other and on the sonotrode 13 ,

At the welding spikes 14 is it, how 8th shows to short truncated cones with about 0.8 mm in height and a slope angle of 60 °. At their top, the cones have one parallel to the Peripherierundung the roller 12 ground, so also rounded, almost square welding contact surface with an area of about 0.25 mm ² .

The distance in the direction L is about 8 mm. On the other hand, the spikes have a distance of 3.46 mm. Other geometries, number of figures, angles, distances and surfaces are possible, as long as it is ensured that the adhesion of the material layers 7 . 8th less than the swelling power of the absorber material.

The grid-like arrangement of welding spikes 14 is the exact reflection of the location of the joints 6 on the material webs 7 . 8th , as 9 shows.

7 shows a unit 15 for winding the composite in the form of rolls. The rolls are cut to absorbent pads, with the outer edges with joints against leakage of absorber material 2 be closed.

10 shows a bonding point of a fused continuous filament nonwoven material layer. This has a relation to the rest of the nonwoven compacted ball structure.

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

• DE 102005032432 A1 [0003]
• EP 1640290 B1 [0004]
• EP 2364927 A1 [0007]
• WO 2014/198391 A1 [0008]

Claims (23)

Absorbent insert for foodstuffs with at least two layers of material ( 7 . 8th ), wherein the absorbent insert a suction area ( 1 ), in which between the material layers ( 7 . 8th ) an absorber material ( 2 ), characterized in that at least one suction region ( 1 ) a buffer area ( 3 ), to form a volume reserve for swollen absorber material ( 2 ). Suction pad according to claim 1, characterized in that the volume reserve of the buffer area ( 3 ) between the material layers ( 7 . 8th ) is formed. Suction pad according to claim 1 or 2, characterized in that the buffer area ( 3 ) directly to the suction area ( 1 ). Suction pad according to one of claims 1 to 3, characterized in that the buffer area ( 3 ) Connection points ( 6 ) between the material layers ( 7 . 8th ) whose connection forces are below an opening limit value by a swelling pressure of the absorber material ( 2 ) lie. Suction pad according to one of claims 1 to 4, characterized in that the suction region ( 1 ) Connection points ( 6 ) between the material layers ( 7 . 8th ) whose connection forces are below an opening limit value by a swelling pressure of the absorber material ( 2 ) lie. Suction pad according to claim 4 or 5, characterized in that the bonding forces are below a limit of 10 N / 5 cm, preferably below a limit of 5 N / 5 cm, in particular below a limit of 2 N / 5 cm. Suction pad according to one of claims 4 to 6, characterized in that the connection points ( 6 ) is formed point-like, in particular by a frusto-conical body. Suction pad according to one of claims 4 to 7, characterized in that the ratio of all surfaces of the joints ( 6 ) to the total area is less than 10%, preferably less than 5%, in particular less than 2%. Suction pad according to one of claims 1 to 8, characterized in that at least one material layer ( 7 . 8th ), preferably both material layers ( 7 . 8th ) consist of a nonwoven, in particular a hydroentangled endless filament fleece. Suction pad according to claim 9, characterized in that connection points ( 6 ) between the material layers ( 7 . 8th ) have a compacted compared to the rest of the nonwoven batt structure, wherein preferably the ball structure of a material layer ( 7 ) into the tangle structure of the other material layer ( 8th ) at least partially intervenes. Suction pad according to one of claims 9 or 10, characterized in that the nonwoven fabric has a basis weight of less than 100 g / m ² , preferably less than 70 g / m ² , in particular less than 60 g / m ² and / or the nonwoven a basis weight more than 5 g / m ² , preferably more than 10 g / m ² , in particular more than 20 g / m ² . Suction pad according to one of claims 9 to 11, characterized in that the nonwoven consists of round fibers. Suction pad according to one of claims 1 to 12, characterized in that the buffer area ( 3 ) around the suction area ( 1 ) is arranged. Suction pad according to one of claims 1 to 13, characterized in that the material layers ( 7 . 8th ) preferably at the outer edges of the absorbent insert with joints ( 5 ) against the leakage of absorber material ( 2 ) are closed. Process for producing a absorbent pad, in particular a absorbent pad according to one of Claims 1 to 14, comprising the following steps: - defined application of absorbent material ( 2 ) on at least one material layer ( 7 ) for forming areas of absorber material ( 2 ) and areas left over from absorber material, - covering this material layer ( 7 ) and the absorber material ( 2 ) with at least one further material layer ( 8th ), - connection of the material layers ( 7 . 8th ). Method according to claim 15, characterized in that the compound ( 6 ) in areas where areas with absorber material ( 2 ) are adjacent to areas that are free of absorber material ( 2 ), by connecting points ( 6 ) whose connection forces are below an opening limit value by a swelling pressure of the absorber material ( 2 ) lie. Method according to claim 16, characterized in that the connection points ( 6 ) are designed as spot welding surfaces, preferably by ultrasonic welding. The method of claim 16 or 17, characterized in that the engraving depths of the junctions ( 6 ) are greater than 0.2 mm, preferably greater than 0.5 mm, in particular greater than 0.8 mm, and / or the engraving depths of the connecting points ( 6 ) are smaller than 2 mm, preferably smaller than 1.7 mm, in particular smaller than 1.3 mm. Method according to one of claims 16 to 18, characterized in that the total pressing surface of the connection points ( 6 ) is less than 10%, preferably less than 5%, in particular less than 2%. Method according to one of claims 16 to 19, characterized in that the number of connection points ( 6 ) Is less than 20 pcs / cm ^2, preferably less than 10 Stck./cm ^2, respectively. Method according to one of claims 16 to 20, characterized in that the individual pressing surfaces of the connection points ( 6 ) are smaller than 1.0 mm x 1.00 mm, preferably smaller than 0.8 mm x 0.8 mm. Food carrier, comprising - A shell for receiving a fluid secreting during storage food and - A suction pad according to any one of claims 1 to 14. Use of a suction pad according to any one of claims 1 to 14 for picking up liquid from a liquid secreting during storage.

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