Convertible footwear and method for manufacturing convertible footwear

Abstract

A footwear (1) and a method of manufacturing a footwear are presented wherein the footwear has an upper portion (11) which is connected to a sole (12) by a separable zipper (4) and which can be detached from the sole (12) by opening the zipper (4). In order to be able to produce the shoe (1) at low cost and in a mechanically secure design, it is proposed that the zipper (4) be connected to the sole (12) by injection molding the sole (12) onto or around a part of the zipper (4).

Description

TECHNICAL FIELD

[0001] The invention relates to a method for manufacturing a shoe according to the features of the preamble of claim 1. BACKGROUND

[0002] In practice, two-piece shoes are known which have an upper part (Oberteil) which can be detached from the sole, also called a topper. For example, EP 2 134 204 B1 shows a shoe which has a detachable upper part and a sole which are connected to each other by means of a zipper. The sole comprises a support plate in order to give the shoe the necessary stability. Manufacturing such a multi-part shoe is correspondingly complex and therefore cost-intensive.

[0003] The utility model DE 20 2009 010 097 U1 knows a shoe which has a detachable upper part in order to convert the shoe from a sports shoe to a ballet shoe. Here, the upper part is also attached by means of a detachable zipper.

[0004] Furthermore, the utility model DE 20 2019 000 298 U1 shows a convertible shoe in which the upper part is detachably attached to the sole by means of a zipper. The utility model teaches that the shoe comprises magnets in the heel region of the upper and the sole in order to fix the zipper in the closed position.

[0005] For the two-piece shoes known at present, the zipper has to be bonded to the sole in a separate production step. This makes the manufacture of such two-piece shoes relatively complex and error-prone. SUMMARY

[0006] It is an object of the present invention to provide a method for manufacturing a shoe which has an upper part which can be detached from the sole by means of a zipper and which enables the production of mechanically robust shoes at low cost.

[0007] According to the invention, this object is achieved by a method for manufacturing a shoe having the features of claim 1.

[0008] According to the invention, a method for manufacturing a shoe is proposed which has an upper part which is connected to the sole by means of a separable zipper and which can be detached from the sole by opening the zipper. It is essential here that the zipper is connected to the sole by injection molding or casting the sole onto a part of the zipper, or by injection molding the sole around a part of the zipper, or by casting the sole around a part of the zipper.

[0009] By injection molding the shoe sole or by casting the shoe sole onto a part of the zipper, the zipper is already mechanically firmly bonded to the shoe sole in the manufacturing process of producing the shoe sole. According to the invention, no additional working step is required to connect the zipper to the shoe sole. Furthermore, due to the injection molding of the shoe sole or the casting of the shoe sole onto the zipper, the connection is mechanically very durable and firm. This means that the shoe produced by this manufacturing method has a high mechanical stability and a long service life. Preferably, injection molding or casting the shoe sole means introducing the shoe sole material in a liquid state and then hardening it to form a solid shoe sole.

[0010] A further advantage of the manufacturing method according to the invention is that the visible part of the zipper is relatively small, since a large part of the zipper is overmolded by the shoe sole, and thus the finished shoe has a visually aesthetic design. Furthermore, the zipper can be hidden by a Wulst formed on the shoe sole and / or by a Lasche formed on the upper part, so that the appearance of the shoe manufactured according to the method of the invention hardly differs from a conventional shoe in which the shoe sole is firmly attached to the upper part.

[0011] In particular, with regard to the zipper, a separable or detachable zipper can be used, which has two halves, each half comprising a textile tape with a rack or Krampen or closure elements. The closure elements or Krampen are connected or separated by a movable puller. The zipper can be separated into two halves by unzipping. In particular, one half of the zipper is arranged on the shoe sole and the other half of the zipper is arranged on the upper part. In order to connect the upper part to the shoe sole, the zipper is engaged together and closed in a conventional manner by moving the puller. This connects the upper part of the shoe to the shoe sole by the zipper. The zipper can be a metal zipper or a plastic zipper.

[0012] One advantage is that the upper part of the shoe, also referred to as the Topper or Schuhoberteil, can be detached from the shoe sole, for example to clean the upper part or to clean the shoe sole separately. Another advantage is that the shoe sole can be easily replaced for repair purposes.

[0013] In a preferred embodiment, a multi-part mold can be provided for manufacturing a shoe, which comprises a last, a shoe sole bottom part and at least one side part or a plurality of side parts, and wherein the shoe sole bottom part, the one or plurality of side parts and the last together form a shoe sole cavity, and wherein the last and / or the at least one or plurality of side parts has a circumferential groove and the rack of the zipper is inserted into the circumferential groove in such a way that the textile strip of the zipper protrudes downward into the shoe sole cavity.

[0014] In particular, it can be provided that after inserting the toothed strip of the zip into the recess, the mold is closed and then the sole material is injected or cast into the sole cavity and solidified therein, wherein during the solidification of the sole material the textile strip of the zip is bonded to the sole material. In particular, injecting the sole material means that the sole material in liquid form is injected at an elevated pressure. Casting the sole material means that the sole material in liquid form is injected in particular at normal pressure.

[0015] The sole can be of different shapes. In particular, different soles can be provided, which differ in their properties in terms of cushioning and / or sole tread. Preferably, the sole tread of the shoe can be formed by a sole bottom part. The sole bottom part can have a tread, which serves as a negative shape for the sole tread.

[0016] In a preferred embodiment, it can be provided that the sole is interchangeable, in particular different soles with different sole treads are provided, which are interchangeable. This can change the properties of the shoe, for example by providing a first sole with a coarse sole tread and a second sole with a fine sole tread, for example a razor-cut tread or a sole with a smooth tread.

[0017] Preferably, it can be provided that the sole is constructed from different materials, wherein one of the different materials or a plurality of the different materials is injected into the sole cavity before the sole material is injected or cast into the sole cavity or a plurality of the different materials is injected or cast one after the other into the sole cavity and solidified therein. For example, soles with different cushioning properties can be provided in order to manufacture customizable sports shoes. Depending on the materials used, the cushioning properties of the sole can be adjusted such that the shoes produced by the method of the present invention can be individually adapted to different ranges of application or types of sports.

[0018] Different materials can be used for the sole material. The choice of the specific material type is preferably based on the cushioning properties required for the sole. Various cushioning elements can also be incorporated into the sole in order to produce specific cushioning properties. Different sole materials can be combined with each other. Furthermore, combinations of the sole material with a leather outsole or a rubber outsole are also provided.

[0019] For example, the following materials can be used for the sole material: PU-Mono (polyurethane), PU-PU, PU-TPU (thermoplastic polyurethane), PU-TPE (thermoplastic elastomer), PU-rubber, PU-TR (thermoplastic rubber), PU leather, TPU, TPE-U (polyurethane-based thermoplastic elastomer), SEBS (styrene-ethylene-butylene-styrene), EVA (ethylene-vinyl acetate), EVA-TPU, EVA rubber, PVC (polyvinyl chloride), TPS (styrene block polymer). This list is to be understood as an example and does not represent an exhaustive list or a limitation of the possible sole materials.

[0020] In a preferred embodiment, it can be provided that the foil is inserted into the sole cavity and / or that the foil is inserted between the last and the mold and that the foil is held in the mold by vacuum. The foil can be inserted into the sole cavity before the sole material is inserted. The foil can improve the quality and / or the appearance of the sole, in particular to contribute to the final finish of the sole. The foil can be made of, for example, PU, TPU or PVC.

[0021] In a preferred embodiment, it can be provided that the teeth of the zipper are held in the circumferential groove of the last and / or of the at least one side part or of the plurality of side parts by vacuum. This has the advantage that the zipper is always arranged or held in the same position during the manufacturing process and that it is held in this position when the sole material is injected into the sole cavity. For example, it can be provided that the last has a vacuum channel extending to the circumferential groove, in particular for holding the teeth of the zipper in the circumferential groove. Alternatively or additionally, it can also be provided that the side part and / or the plurality of side parts comprises a vacuum channel extending to the circumferential groove, in particular for holding the teeth of the zipper.

[0022] Preferably, the vacuum channels are designed such that they extend through the last and / or through the side part or the plurality of side parts up to the circumferential groove. The ends of the vacuum channels at the location of the circumferential groove are preferably designed in the form of holes or holes. Preferably, the holes or holes are distributed over the entire length of the circumferential groove, in particular equidistantly. This ensures that the teeth are firmly held in the groove over the entire length of the circumferential groove. It can also be provided that the vacuum channels are arranged on or connected to a vacuum device. The vacuum device preferably generates a negative pressure or vacuum in order to firmly hold the teeth in the groove. Vacuum is preferably understood to mean a pressure below ambient pressure.

[0023] It is an advantage that the sole layout, the sole design and the sole pattern can be designed freely and can be changed depending on the respective material properties of the sole material and the desired design within the process range of the person skilled in the art.

[0024] In an embodiment, a shoe upper can be provided which has a part of the detachable zipper on its lower circumferential edge, and in which the shoe is completed by closing the zipper to connect the shoe upper to the sole.

[0025] Different upper materials can be used for the shoe upper part of the shoe (also referred to as topper or shoe upper of the shoe). For example, a knitted material can be used, or a woven material or a textile, and / or leather, and / or a synthetic material, and / or a polyurethane and / or a PVC film, etc. Combinations of these materials can also be used to form the shoe upper part of the shoe.

[0026] The upper part of the zipper can be attached to the shoe upper or shoe topper by sewing, or by high-frequency welding, or by adhesive bonding.

[0027] Advantageously, the upper can be provided with a flap, in particular a ring-shaped flap, on its inner side in order to cover and / or cushion the rack of the zipper. Alternatively or additionally, it can also be provided that the finished shoe has an insole which is designed in such a way that the edge of the insole covers the rack of the zipper. Advantageously, a waterproof zipper can be used as the zipper. This also makes it possible to produce a water-resistant shoe or a waterproof shoe.

[0028] Advantageously, it can be provided that a cover is sewn and / or welded and / or bonded into the heel region of the shoe on the inner side of the upper part, wherein the cover is designed to cover the zipper. In particular, the cover made of plastic or a similar material can also be provided in the shoe sole or in a region of the shoe sole by means of a pin or one or more magnets in order to cover the zipper.

[0029] Furthermore, the idea according to the invention also comprises a shoe last for manufacturing a shoe having an upper part which can be connected to a shoe sole by means of a separable zipper and can be detached from the shoe sole by opening the zipper, in particular for manufacturing a shoe according to the method as described above. The shoe last must have a circumferential recess on its lower circumference for inserting the rack of the zipper.

[0030] The shoe last can be made of a variety of materials. For example, the material of the shoe last can be wood and / or metal, for example aluminum or steel, and / or plastic, for example high-density polypropylene or polyester resin or epoxy resin, or a combination thereof. The shoe last can be produced by 3D printing, or lathe cutting or milling the shape of the shoe last to manufacture the shoe last. It is also possible to manufacture the shoe last using a casting process.

[0031] Further provision of the idea according to the invention also comprises a mold for manufacturing a shoe having an upper part which is connected to a shoe sole by means of a separable zipper and can be detached from the shoe sole by opening the zipper, in particular for manufacturing a shoe according to the method as described above. The mold must comprise a shoe sole base part and one side part or a plurality of side parts, wherein the side part or the plurality of side parts laterally delimits the shoe sole base part in order to form a shoe sole cavity and the side part or the plurality of side parts comprises a circumferential recess in order to insert the rack of the zipper and / or to use a shoe last as described above in order to receive the rack of the zipper.

[0032] The side part or the plurality of side parts of the mold preferably forms a mold ring. The mold ring surrounds and laterally delimits the shoe sole base part. The recess is preferably incorporated in the mold ring, i.e. in the side part or the plurality of side parts of the mold, in order to be able to insert the rack of the zipper in such a way that the textile strip of the zipper protrudes into the shoe sole cavity. This allows the shoe sole material to be injected or cast into the closed shoe sole mold in such a way that the zipper is firmly connected to the shoe sole after the shoe sole material has solidified.

[0033] The grooves for inserting the teeth of the zipper can be provided only in the last, or only in the mold ring or in one side part or in multiple side parts of the mold, or, in another embodiment, both in the last and in the mold ring, i.e. in one side part or in multiple side parts of the mold.

[0034] In particular, it can be provided that the grooves are provided at a constant distance from the surface of the sole bottom part to the sole, in particular as closed circumferential grooves.

[0035] In order to provide a sole with an improved final finish, it can be provided that the side part and / or the multiple side parts and / or the bottom part have a vacuum channel, in particular for evacuating the sole cavity and / or for holding a foil. The foil can be inserted into the sole cavity and / or between the last and the side part or the bottom part of the mold before the sole material is inserted. The foil can then be held in the mold by means of a vacuum. Subsequently, the sole material can be inserted and cast into the sole.

[0036] In particular, the foil can be heat-deformable, so that the foil is particularly suitable for a multi-part mold, in particular the sole bottom part and / or the side part and / or the multiple side parts, in particular under the influence of a vacuum at the same time. The foil can be heated by heating the multi-part mold or by inserting a heated sole material. By heat-deforming the foil, a particularly good contact between the foil and the multi-part mold is possible, so that the inserted foil cannot be displaced. The formation of wrinkles can also be prevented.

[0037] Advantageously, it can be provided that the sole bottom part and / or the side part or the multiple side parts are movably mounted in such a way that they can be closed and opened in order to form a sole cavity together with the last, in particular as described above, in their closed position.

[0038] Furthermore, the inventive concept also comprises a construction kit for a shoe, in particular a shoe manufactured according to the manufacturing method according to one of the examples described herein, wherein the construction kit comprises at least one upper and at least two different soles, and / or comprises at least one sole and at least two different uppers, wherein the shoe can be manufactured by connecting one of the uppers to one of the soles by means of a zipper.

[0039] For example, the construction kit for a shoe can be designed as a sales unit in order to offer the construction kit as a set of shoes produced by the method of the invention in a shop or shoe store, which comprises at least one upper part and at least two different soles, for example for adjusting the properties of the sole. Alternatively, the construction kit or set for manufacturing a shoe can also be provided by offering at least two uppers and soles in order to be able to individually customize the design of the shoe. Of course, the construction kit or sales unit can also be offered with a different number and type of uppers or soles in order to give the customer the opportunity to individually customize the shoe.

[0040] In particular, it can be provided that the kind of shoe and / or the design of the shoe can be changed by exchanging the sole for another sole and / or by exchanging the upper for another upper. BRIEF DESCRIPTION OF DRAWINGS

[0041] The drawings show example embodiments of the manufacturing method according to the invention and of the shoe produced by the manufacturing method, and are described in the following description of the drawings. They show: Figure 1 a three-dimensional schematic view of an apparatus for carrying out the manufacturing method according to the invention; Figure 2 a schematic view of the method steps for inserting a zip into a recess of a last; Figure 3 a cross-sectional view of a multi-part mould for carrying out the manufacturing method according to the invention; Figure 4 an alternative embodiment as shown in Figure 3 Figure 5 a schematic exploded view of a multi-part mould for carrying out the method according to the invention; Figure 6 a last according to the invention; Figure 7 a shoe manufactured using the manufacturing method according to the invention; Figure 8 a cross-sectional view of an alternative embodiment of a multi-part mould for carrying out the manufacturing method according to the invention; Figure 9 a further modification of a multi-part mould for carrying out the manufacturing method according to the invention.

[0042] The drawings show various embodiments and examples for implementing the invention. These embodiments serve to illustrate the invention and should not be understood as limiting. It will be clear to the person skilled in the art that they can modify and vary the embodiments shown in the drawings within the scope provided by the claims, without departing from the basic idea of the invention. DETAILED DESCRIPTION

[0043] Figure 1 A multi-part mould 2 for carrying out the method of the invention for manufacturing a shoe 1 is shown. The multi-part mould 2 has a sole bottom part 23, which is laterally delimited by side parts 22. A last 3 is arranged on the top of the multi-part mould 2. The parts of the multi-part mould 2 jointly enclose a sole cavity 24. The last 3 has a circumferential recess 31 into which a zip 4 is inserted.

[0044] Figure 2 A detailed enlarged view of the last 3 with the recess 31 is shown. Figure 2 ​It is also shown how the zip 4 is inserted in the recess. The zip 4 has a textile strip 41 on which the closure elements in the form of teeth 42 are held. The recess 31 of the shoe tree 3 is designed in such a way that it receives the closure elements or teeth 42 of the zip, in such a way that the textile strip 41 of the zip protrudes downwards into the shoe cavity 24.

[0045] Figure 3 A cross-sectional view of the multi-part mold 2 is shown. The cross-sectional view shows the shoe tree 3, which closes the shoe cavity 24 at the top and has a recess 31 in which the zip 4 is inserted. The textile strip 41 of the zip 4 protrudes downwards into the shoe cavity 24. The closure elements 42 of the zip 4 are received by the recess 31 of the shoe tree 3. The side part 22 laterally closes the shoe tree and the shoe sole bottom part 23. The shoe sole bottom part 23 is arranged below the shoe cavity 24 and forms the bottom of the shoe cavity 24.

[0046] Figure 4 The embodiment of the multi-part mold 2 corresponds to the embodiment of Figure 3 , with the difference that the recess 21 for inserting the zip 4 is not arranged in the shoe tree 3, but in the side part 22. Otherwise, the embodiment of Figure 4 corresponds to the embodiment of Figure 3 .

[0047] Alternatively, it is also possible that the shoe tree 3 has the recess 31 and the side part 22 has the recess 21 in order to receive the closure elements 42 of the zip 4.

[0048] Figure 5 A perspective view of the multi-part device 2 is shown. It can be seen here that the side part 22 laterally delimits the shoe sole bottom part and the shoe tree 3 is placed from above in order to close all sides of the shoe cavity 24.

[0049] The individual parts of the multi-part mold 2 are arranged movably mounted in order that the mold 2 can be opened and closed. In the closed position with the inserted zip 4, it is provided that the shoe sole 12 of the shoe 1 to be manufactured is formed by injecting or casting shoe sole material into the shoe cavity 24. The shoe sole material then solidifies and adheres to the zip 4 in such a way that it is inseparably connected to the manufactured shoe sole 12.

[0050] Figure 6 An example of a shoe tree 3 is shown. The shoe tree can be made of solid material, for example metal or aluminum or plastic. The shoe tree 3 has a recess 31 on its lower circumferential edge. The recess 31 is formed in such a way that it closes circumferentially around the shoe tree 3. The rack 42 of the zip 4 can be inserted into the recess 31 in order to be subsequently bonded to the shoe sole 12 in the multi-part mold 2 by a direct injection or casting process.

[0051] Figure 7A shoe 1 manufactured according to the manufacturing method of the present application is shown. The shoe 1 has a shoe upper part 11 and a shoe sole 12. The shoe upper part 11 is connected to the shoe sole 12 by a zipper 4. By opening and separating the zipper 4, the shoe upper part 11 can be detached and replaced by another shoe upper part. It is also possible to leave the shoe upper part 11 in place and replace the shoe sole 12. This makes it easy to adapt the shoe to different requirements. For example, the shoe upper 11 can be replaced for design reasons in order to change the appearance of the shoe. The shoe sole 12 can also be exchanged, for example, to convert a sports shoe from an indoor sports shoe to an outdoor sports shoe by exchanging the indoor shoe sole 12 for an outdoor shoe sole 12. It is also possible to replace a plastic shoe sole 12 with a leather shoe sole 12 and connect it to the shoe upper part 11. For this purpose, it is possible to provide a corresponding plastic layer on the upper side of the leather shoe sole, which is connected to the zipper 4 in the multi-part mold 2 by injection molding or casting. This also makes it possible to add a leather shoe sole to a sports shoe or sneaker, for example, in order to make the shoe look more formal.

[0052] If a defect occurs, it is also possible to replace the shoe sole 12 with a new shoe sole, thus allowing the shoe to be quickly repaired. If a defect occurs in the shoe upper 11 or the shoe upper 11, it can also be replaced in the same way. This means that a shoe produced according to the manufacturing method of the present application can be easily repaired, thus saving resources and costs.

[0053] Figure 8 An embodiment of a multi-part mold 2 is shown. The multi-part mold 2 is configured in the same way as the multi-part mold shown in Figure 4 The multi-part mold 2 has a shoe sole cavity 24, which is defined by the last 3 provided on top, the side part 22 and the shoe sole part 23. The side part 22 has a recess into which the zipper is inserted. The textile strip 41 of the zipper 4 protrudes downward into the shoe sole cavity 24. The closure element 42 of the zipper 4 is received by the recess of the side part 22. Unlike the embodiment of Figure 3 and Figure 4 The side part 22 and the shoe sole part 23 have a vacuum channel 25. The vacuum channel 25 can be used to create a vacuum in the shoe sole cavity 24 or to vent the shoe sole cavity 24.

[0054] In order to produce the shoe, a foil 43 is inserted between the last 3 and the mold 2, i.e. between the side part 22 and the shoe sole part 23. The foil can be held by a vacuum. The foil has the advantage that it simplifies the manufacturing process. For example, the foil can help to achieve an independent shoe sole surface or to improve the final finishing of the shoe sole.

[0055] Figure 9 An alternative embodiment of a multi-part mold 2 is shown. Unlike the embodiment of Figure 8 The last 3 here has a recess 31 into which the closure element 42 of the zipper 4 is inserted. As Figure 8As shown, the foil 43 is inserted between the last 3 and the side part 22 or the sole part 23. Here, the foil 43 is also held or fixed to the side part 22 and the sole part 23 by the vacuum introduced by the vacuum channel 25. After insertion of the foil 43, the sole material is inserted into the sole cavity 24 and cured.

[0056] In a modification of the embodiment of Figure 8 and Figure 9 , of course, a multi-part mold can also be formed in which the last 3 and the side part 22 each have a recess, so that the closure element 42 of the zipper 4 is received in the recess of the last and in the recess of the side part 22 at the same time. Here, the foil 43 can also be inserted between the last 3 and the side part 22 or the sole 23 and held in place by the vacuum to improve the final finish or surface of the sole.

[0057] List of reference signs 1 shoe 11 shoe upper part, upper 12 sole 2 mold 21 recess 22 side part 23 sole part 24 sole cavity 25 vacuum channel 3 last 31 recess 4 zipper 41 textile strip 42 teeth 43 foil

Claims

1. A method for manufacturing a shoe (1), said shoe (1) having an upper portion (11) connected to a sole (12) by a detachable zipper (4) and detachable from the sole (12) by opening the zipper (4), Its features are, The zipper (4) is attached to the sole (4) by injection molding or casting the sole (12) onto a portion of the zipper (4), or by injection molding the sole (12) around a portion of the zipper (4), or by casting the sole (12) around a portion of the zipper (4).

2. The method for manufacturing shoes according to claim 1, Its features are, A multi-part mold (2) is used to manufacture a shoe (1), which includes a shoe last (3), a sole component (23) and at least one side component (22) or multiple side components, wherein the sole component (23), the side component (22) or multiple side components and the shoe last (3) together form a sole cavity (24), wherein the shoe last (3) and / or at least one side component (22) or multiple side components have circumferential grooves (21, 31), and the toothed strip (42) of the zipper (4) is inserted into the circumferential groove, such that the textile strip (41) of the zipper (4) protrudes downward into the sole cavity (24).

3. The method for manufacturing shoes according to claim 2, Its features are, After inserting the toothed strip (42) of the zipper (4) into the groove (21, 31), the mold (2) is closed, and the sole material is then injected or cast into the sole cavity (24) and cured there, wherein, during the curing process of the sole material, the textile strip (41) of the zipper (4) is bonded to the sole material, wherein, preferably, the sole pattern of the shoe is formed by the sole component (23).

4. The method for manufacturing shoes according to any one of the preceding claims, Its features are, The sole (12) is constructed of different materials, wherein, before the sole material is injected or cast, one or more of the different materials are introduced into the sole cavity (24), or multiple of the different materials are injected or cast into the sole cavity (24) one after another and cured there.

5. The method for manufacturing shoes according to any one of claims 2 to 4, Its features are, Insert the foil (43) into the sole cavity (24) and / or insert the foil (43) between the last (3) and the mold (2) and hold the foil in the mold (2) by vacuum.

6. The method for manufacturing shoes according to any one of claims 2 to 5, Its features are, The toothed teeth (42) of the zipper (4) are held by vacuum in the circumferential grooves (21, 31) of the shoe last (3) and / or at least one side part (22) or multiple side parts (22).

7. The method for manufacturing shoes according to any one of the preceding claims, Its features are, The shoe is provided with an upper (11) having a portion of a separable zipper (4) on its lower circumferential edge, and wherein the shoe (1) is connected to the sole (12) by closing the zipper (4).

8. The method for manufacturing shoes according to claim 7, Its features are, The upper (11) has a flap, particularly an annular flap, on its inner side to cover and / or cushion the toothed strip (42) of the zipper (4).

9. A method for manufacturing shoes according to any one of the preceding claims, Its features are, Waterproof or water-repellent zippers are used as the zipper (4).

10. A shoe last for manufacturing shoes, the shoe (1) having an upper portion (11) connectable to a sole (12) via a detachable zipper (4) and detachable from the sole (12) by opening the zipper (4), for manufacturing shoes according to any one of claims 1 to 9. Its features are, The shoe last (3) has a circumferential groove (31) on its lower circumferential direction for inserting the toothed strip (42) of the zipper (4).

11. The shoe last for manufacturing shoes according to claim 10, Its features are, The shoe last (3) includes a vacuum channel (25) extending into a circumferential groove (31), specifically for holding the toothed strip (42) of the zipper (4) in the circumferential groove (31).

12. A mold used for manufacturing shoes, wherein, The shoe (1) includes an upper portion (11) which is connected to the sole (12) by a detachable zipper (4) and is detachable from the sole (12) by opening the zipper (4), for manufacturing a shoe according to any one of claims 1 to 9. Its features are, The mold (2) includes a sole component (23) and a side component (22) or a plurality of side components (22), the side component (22) or the plurality of side components laterally defining the sole component (23) to form a sole cavity (24) together with the last (3) according to claim 10 or 11, and the side component (22) or the plurality of side components having a circumferential groove (21) to receive the toothed teeth (42) of the zipper (4), and / or, the last (3) according to claim 10 or 11 is used to receive the toothed teeth (42) of the zipper (4).

13. The mold for manufacturing shoes according to claim 12, Its features are, The groove (21) is provided at a constant distance from the surface of the sole component (23), and is specifically designed as a closed circumferential groove (21).

14. The mold for manufacturing shoes according to claim 12 or 13, Its features are, The side component (22) and / or multiple side components (22) and / or the bottom component (23) include a vacuum channel (25), particularly for venting the sole cavity (24) and / or for retaining the foil (43).

15. The mold for manufacturing shoes according to any one of claims 12 to 14, Its features are, The side component (22) and / or multiple side components (22) include a vacuum channel (25) extending into a circumferential groove (21), and in particular a toothed bar (42) for holding the zipper (4).

16. The mold for manufacturing shoes according to any one of claims 12 to 15, Its features are, The sole component (23) and / or the side component (22) or multiple side components are movably mounted such that they can be closed and opened so that in their closed position they form a sole cavity (24) together with the last (3), particularly the last according to claim 10 or 11.

17. A construction kit for a shoe (1) manufactured according to the manufacturing method according to any one of claims 1 to 9, wherein, The construction kit includes at least one upper (11) and at least two different soles (12), and / or includes at least one sole (12) and at least two different uppers (11), wherein the shoe (1) is manufactured by connecting one of the uppers (11) to one of the soles (12) via a zipper (4).

18. The construction kit for shoes according to claim 17, Its features are, The type of shoe (1) and / or the design of shoe (1) can be changed by replacing the sole (12) with another sole (12) and / or by replacing the upper (11) with another upper (11).

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