EP4152998A1 - Einlegesohle - Google Patents
EinlegesohleInfo
- Publication number
- EP4152998A1 EP4152998A1 EP21727419.0A EP21727419A EP4152998A1 EP 4152998 A1 EP4152998 A1 EP 4152998A1 EP 21727419 A EP21727419 A EP 21727419A EP 4152998 A1 EP4152998 A1 EP 4152998A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- insole
- adhesive film
- preferred
- shore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/003—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material
- A43B17/006—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material multilayered
Definitions
- the present invention relates to two-layer insoles in which the first layer has at least one recess which is filled by the material of the second layer.
- Insoles are separate insoles that are inserted into shoes for reasons of comfort or for orthopedic reasons.
- the most common form of insoles are shoe insoles, which are offered on an industrial scale for various shoe sizes. Insoles are often used for medical, especially orthopedic reasons, but also in the field of sports. According to the medical indication, orthopedic insoles are often individually tailored to the patient's individual foot by the orthopedic shoemaker, as they are intended to support the foot or compensate for poor posture.
- insoles Three-dimensionally shaped insoles are increasingly being offered, in which, for example, a bulky pad is available as a transverse arch support as well as an arching support for the medial edge of the sole of the foot and a recess for the heel recess, often with additional pressure-absorbing pads or inlets under the heel bone.
- Insoles are also known in which the surface consists of materials of different hardness at different points. Such insoles are known, for example, from DE 20 2005 018 902 U1, DE 20 2005 019 691 U1, DE 102014 102 628 A1, DE 102009 060 933 A1 and DE 102012021 696 A1.
- the technical problem on which the present invention is based is the provision of multilayer insoles in which one layer partially protrudes into the other layer and a surface that is as continuous as possible is formed from the two layers.
- the production of these inlays should be as simple as possible and preferably it should be possible to dispense with material-removing machining to compensate for the height of the layers.
- the insole should be able to be produced by a simple deep-drawing process.
- Another technical problem is the provision of an insole with zones of different hardness, in which a continuous and thus comfortable footbed can be easily produced.
- the insole should be deformable in three dimensions.
- the present invention solves the technical problem on which it is based by means of the subject matter of claim 1.
- the present invention solves the technical problem on which it is based, in particular by an insole having at least a first layer made of a first material and a second layer made of a second material, the first layer having at least one recess which is filled by the material of the second layer .
- insoles can be provided in which recesses in the first layer, for example the layer facing the sole of the foot, can be easily filled with material from the second layer, for example the layer underneath, while still creating a smooth, continuous surface .
- insoles can advantageously be produced by a deep-drawing process.
- the recesses of the first layer can be made in the material in a simple manner when cutting, for example punched out, and then the two layers can be attached to one another, for example via an adhesive film.
- the insole can not only be given a three-dimensional shape in an advantageous manner, but the recesses in the first layer are filled with material from the second layer, surprisingly producing a smooth surface.
- the boundary between the first layer and the second layer is very flat on the surface and the sole of the foot can hardly or not at all feel it.
- the first layer is at least partially connected to the second layer via an adhesive film.
- the Kl ehefilm a polymer adhesive film.
- the adhesive film is a thermoplastic adhesive film.
- the adhesive film is a thermoplastic polymer adhesive film. A sheet of the adhesive film is preferably used.
- thermoplastic polymer adhesive films are known to the person skilled in the art.
- a thermoplastic adhesive film based on modified polyolefins is particularly preferred.
- the melting range of the adhesive film is preferably below 140.degree. C., particularly preferably below 100.degree.
- the chemical basis of the adhesive film is preferably EVA (ethylene-vinyl acetate copolymer), LDPE (low-density polyethylene), HDPE (high-density polyethylene), CoPA (polyamide block copolymer), TPU (thermoplastic polyurethane) or CoPES (copolyester ).
- the adhesive film preferably contains at least one of these substances.
- the adhesive film particularly preferably contains EVA and / or LDPE and / or HDPE.
- the chemical basis of the adhesive film EVA, LDPE or HDPE is particularly preferred.
- the basis of the adhesive film can also consist of mixtures of the substances mentioned.
- the layer thickness of the adhesive film is preferably at most 0.5 mm.
- the adhesive film is preferably a foil which is applied to the first layer and / or to the second layer during the manufacture of the insole.
- the first layer and the second layer can be connected with an adhesive film in such a way that they are not only permanently attached to one another, but can also be deep-drawn, in particular can be deep-drawn in such a way that the material of the second layer is in penetrates the recesses of the first layer and fills them.
- the existing adhesive film enables not only a permanent connection between the two layers, but also the production of the end product in a deep-drawing process in which the recesses of the first layer are made through the second layer and a three-dimensional shape of both layers is possible at the same time.
- the adhesive film is attached to the first layer before the introduction, for example punching out, of the recesses, that is to say that the adhesive film is also removed, for example also punched out, at the locations of the recesses.
- the first layer and the material in the recess of the first layer form a closed, continuous surface.
- a closed, continuous area is understood to mean, in particular, a surface in which none of the layers protrudes beyond the other layer.
- the surface can be flat or curved in the case of a three-dimensionally shaped insole.
- the continuous surface it is not necessary to remove material from one or both layers in order to produce the continuous surface. It can, however, be provided, and is not excluded, to remove excess material by grinding. It is also not excluded that the surface in the border area between the material of the first layer and the material of the second layer has very narrow notches. However, these do not impair the wearing comfort, since they are so small that they cannot be felt by the sole of the foot.
- the insole is three-dimensionally shaped.
- Suitable three-dimensional shapes of an insole are known to the person skilled in the art.
- arch supports can be provided.
- the first layer and the second layer are preferably shaped three-dimensionally. All layers are preferably shaped three-dimensionally.
- the first layer has a plurality of cutouts which are filled with material of the second layer, in particular two cutouts, three cutouts, four cutouts, five cutouts or six cutouts.
- the first layer is the layer facing the foot.
- the second layer is thus preferably under the first layer, that is to say is the layer facing the shoe sole.
- both the first layer and the material of the second layer, which fills the cutouts in the first layer face the foot.
- the foot is preferably on a surface which consists in partial areas of material of the first layer and in partial areas of material of the second layer.
- the material of the first layer has a different Shore hardness A than the material of the second layer.
- the material of the first layer is preferably harder than the material of the second layer, in particular if the first layer is the layer facing the foot.
- the first layer forms the harder base layer on which the foot stands, in the recesses of which the softer material of the second layer is located and thus the area of the recesses forms a softer area of the insole.
- specific softer areas can be formed in the insole. Such areas are particularly suitable to relieve the foot at certain points and / or to reduce pressure pain.
- the first layer is formed from a softer material than the second layer if, for example, specific harder stabilization points are to be formed.
- the material of the first layer preferably has a Shore hardness of at least 40 Shore A.
- the material of the second layer preferably has a Shore hardness of at most 35 Shore A.
- the material of the first layer preferably has a Shore hardness of at least 30 Shore A to a maximum of 60 Shore A, preferably at least 35 Shore A and at most 55 Shore A, particularly preferably at least 40 Shore A.
- the material of the second layer preferably has a Shore hardness of at least 15 Shore A.
- the material of the second layer preferably has a Shore hardness of at least 15 Shore A and at most 40 Shore A, preferably at least 20 Shore A and at most 33 Shore A, particularly preferably at least 25 Shore A and at most 30 Shore A.
- the material of the second layer preferably has a Shore hardness of at most 30 Shore A.
- Suitable Shore hardnesses for the layers and correspondingly usable materials are known to the person skilled in the art.
- the layer thickness of the first layer is less than the layer thickness of the second layer.
- the layer thickness of the first layer is at least 0.5 mm.
- the layer thickness of the first layer is preferably at most 3.5 mm, preferably at most 2 mm.
- the layer thickness of the second layer in particular in the area without gaps in the first layer, is preferably at least 2 mm, particularly preferably at least 3 mm.
- the layer thickness of the second layer is particularly preferably at most 6 mm, particularly preferably at most 5 mm.
- the material of the first layer and / or the material of the second layer is a thermoplastic.
- the material of the first layer and / or the material of the second layer is preferably a crosslinked polyolefin foam.
- the material of the first layer and the material of the second layer are preferably a material which is suitable for deep-drawing deformation. Such materials are known to those skilled in the art.
- the material of the first layer and / or the material of the second layer is particularly preferably a polyethylene foam or a foam which contains polyethylene.
- the insole has a third layer made of a third material.
- the insole has a fourth layer made of a fourth material.
- a third layer can be provided on the side of the second layer facing away from the first layer, preferably a layer made of a material with a higher Shore hardness, particularly preferably a layer for stiffening and stabilizing.
- This layer can preferably be used to stabilize the midfoot and / or rear foot and thus to support corrective measures in the case of foot misalignments.
- the third layer preferably consists of a wetted textile fabric.
- a fourth layer can be provided, which preferably consists of a crosslinked polyolefin foam, the material of the fourth layer particularly preferably having a Shore hardness that is higher than the Shore hardness of the material of the first Layer and / or the material of the second layer.
- the third layer is particularly preferably located between the second layer and the fourth layer. In an alternative embodiment, the third layer can also be dispensed with.
- the material of the third layer and / or the material of the fourth layer has a higher Shore hardness A than the material of the first layer and / or the material of the second layer. In a preferred embodiment, the material of the third layer has a higher Shore hardness A than the material of the first layer and the material of the second layer.
- the materials of the individual layers in particular the material of the first layer and the material of the second layer, have a different color.
- the material boundaries are easy to recognize thanks to a different color. If the material of the first layer and the material of the second layer are different in color, the zones formed by the cutouts in the first layer, in particular softer zones, can advantageously be clearly recognized.
- the materials of the individual layers can also have the same color. If the layers are to be visually distinguishable, one or more layers can be formed or consist of a perforated material. The perforation of the layers can also be designed differently.
- the second layer is preferably formed from a perforated material, but particularly preferably not the first layer.
- the insole is an orthopedic shoe insert or a sports insole. In a preferred embodiment, the insole is an orthopedic shoe insert.
- FIG. 1 shows an insole according to the invention.
- FIG. 2 shows the layer structure of a preferred embodiment of an insole according to the invention.
- FIG. 1 shows an insole 100 according to the invention in an oblique view.
- the upper, first layer 10 directed towards the foot, made of a harder foam
- the underlying second layer 20 made of a softer foam
- the underlying fourth layer 40 which is directed towards the shoe sole when used, made of a foam that is harder than the foam of the first layer.
- the insole 100 has a typical three-dimensional shape that was produced by means of deep-drawing processes.
- the upper, first layer 10 has four cutouts 11. These recesses 11 are filled with material 21 of the second layer 20.
- first surface 101 which is designed for the foot and which is advantageously continuous although it is formed from two different materials, namely the material of the first layer 10, which comprises the material 21 of the second layer 20.
- the recesses 11 in the first layer 10 advantageously form zones which, due to the filling material 21 of the second layer 20, are softer than the remaining areas of the insole 100, so that the foot is relieved in these zones and / or pressure pain is avoided will.
- FIG. 2 shows the layer structure of the insole 100 in the edge area, i.e. in an area without gaps in the first layer 10. Accordingly, the first layer 10, the underlying second layer 20, the underlying third layer 30 and the lowermost layer 40 can be seen
- the thickness of the first layer 10 is about 1 mm
- the thickness of the second layer 20 is about 4 mm
- the thickness of the third layer 30 is less than 1 mm
- the thickness of the fourth layer 40 is about 4 mm.
- An adhesive film 50 which connects the respective layers to one another, cannot be seen and is therefore only indicated, since the corresponding adhesive film film is very thin at 0.1 mm and dissolves as a result of heat treatment during bonding.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020206397.4A DE102020206397A1 (de) | 2020-05-22 | 2020-05-22 | Einlegesohle |
| PCT/EP2021/063003 WO2021233830A1 (de) | 2020-05-22 | 2021-05-17 | Einlegesohle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4152998A1 true EP4152998A1 (de) | 2023-03-29 |
| EP4152998B1 EP4152998B1 (de) | 2025-12-31 |
Family
ID=76076330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21727419.0A Active EP4152998B1 (de) | 2020-05-22 | 2021-05-17 | Einlegesohle |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4152998B1 (de) |
| DE (1) | DE102020206397A1 (de) |
| DK (1) | DK4152998T3 (de) |
| FI (1) | FI4152998T3 (de) |
| TW (1) | TW202143877A (de) |
| WO (1) | WO2021233830A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115429019A (zh) * | 2022-10-18 | 2022-12-06 | 中科三维成型技术(深圳)有限公司 | 一种多层结构的3d打印鞋垫 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018129670A1 (de) * | 2018-07-27 | 2020-01-30 | Springer Aktiv Ag | Verfahren zum Herstellen eines Einlagenbauteils |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200191566Y1 (ko) * | 2000-02-15 | 2000-08-16 | 김기화 | 신발창 |
| DE202005018902U1 (de) | 2005-12-02 | 2007-04-12 | Bauerfeind Ag | Einlegesohle für Schuhe |
| DE202005019691U1 (de) | 2005-12-16 | 2007-04-26 | Bauerfeind Ag | Einlegesohle |
| DE202007018855U1 (de) | 2007-03-05 | 2009-06-25 | Spannrit Schuhkomponenten Gmbh | Schaumkunststoff-Schuheinlegesohle |
| FR2920646B1 (fr) | 2007-09-10 | 2010-06-04 | Imp Ation De Diffusion Ou Dist | Semelle de chaussure,procede permettant la mise en forme d'une telle semelle et dispositif permettant la mise en oeuvre d'un tel procede. |
| CH701853A1 (de) * | 2009-09-16 | 2011-03-31 | Mafag Reflexa Ag | Flexible Innensohle für geschlossene Schuhe. |
| DE102009060933B4 (de) | 2009-12-23 | 2014-05-28 | Bauerfeind Ag | Integrales Dämpf- und Stützelement |
| CH704561A8 (de) * | 2011-02-18 | 2012-10-15 | Joya Schuhe AG | Schuh. |
| DE102012021696A1 (de) | 2012-10-30 | 2014-04-30 | Bauerfeind Ag | Viscoelastisches Element |
| DE102014102628B4 (de) | 2014-02-27 | 2017-08-24 | Medi Gmbh & Co. Kg | Einlegesohle und Verfahren zur Herstellung einer Einlegesohle |
| SI2918185T1 (en) * | 2014-03-11 | 2018-01-31 | Spannrit Gmbh | Rubber for shoes for shoes made from foam plastic material |
-
2020
- 2020-05-22 DE DE102020206397.4A patent/DE102020206397A1/de active Pending
-
2021
- 2021-04-30 TW TW110115762A patent/TW202143877A/zh unknown
- 2021-05-17 WO PCT/EP2021/063003 patent/WO2021233830A1/de not_active Ceased
- 2021-05-17 DK DK21727419.0T patent/DK4152998T3/da active
- 2021-05-17 EP EP21727419.0A patent/EP4152998B1/de active Active
- 2021-05-17 FI FIEP21727419.0T patent/FI4152998T3/fi active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018129670A1 (de) * | 2018-07-27 | 2020-01-30 | Springer Aktiv Ag | Verfahren zum Herstellen eines Einlagenbauteils |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020206397A1 (de) | 2021-11-25 |
| FI4152998T3 (fi) | 2026-03-25 |
| EP4152998B1 (de) | 2025-12-31 |
| TW202143877A (zh) | 2021-12-01 |
| WO2021233830A1 (de) | 2021-11-25 |
| DK4152998T3 (da) | 2026-03-23 |
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