WO2020016105A1 - Sport shoe with a water-tight sole construction - Google Patents

Abstract

A description is given of a method for producing a sport shoe (10) with a water-tight sole construction, the sport shoe (10) comprising an upper (5), an upper lining (6), an insole (1) and a water-impermeable Strobel sock (2), the method comprising the following steps: a. connecting the upper lining (6) integrally to the upper (5); b. connecting an inner region (31) of a surface of the insole (1) integrally to an inner region (21) of a surface of the Strobel sock (2) such that a surrounding outer region (32) of the insole (1) remains connection-free in relation to the Strobel sock (2), and the Strobel sock (2) projects beyond the insole (1) by way of an overhang (22); c. connecting the insole (1) to the upper (5) by a Strobel seam (41); d. connecting the Strobel sock (2) integrally to the upper lining (6) in a region of overlap of the overhang (22) of the Strobel sock (2) with the upper lining (6) such that the Strobel seam (41) is covered in the shoe interior by the Strobel sock (2).

Description

 Sports shoe with a waterproof sole construction

FIELD OF THE INVENTION

The present invention relates to a method for producing a sports shoe with a waterproof sole construction and a sports shoe produced by the method.

BACKGROUND OF THE INVENTION

In the manufacture of shoes, various so-called designs for fastening the shoe bottom to the shoe upper are known. The choice of the respective design depends on various factors, which include dimensional stability, durability, manufacturing costs and costs, comfort or flexibility.

One of the most commonly used styles is the sticky style (or AGO style), in which the shaft is pinched inwards and glued to the insole. This exclusively glued design can be used almost universally and offers a light, flexible shoe. However, e.g. pull out the edge of the shaft if the glue is insufficient, which reduces longevity.

This contrasts with the sewn styles, such as the welted style or the California style. With the goodyear welted design the upper and the insole are sewn together with a circumferential band, the frame. A second seam connects the frame to the outsole or midsole. The welted design offers a long service life, but the manufacturing effort is usually high. In the California design, a reference strip is used, which is sewn all the way to the underside of the shaft and connected to a soft midsole. With this mach art flexible and light shoes are produced, which however do not have a high dimensional stability.

In the case of sports shoes, the insole is often connected to the upper by means of a strobing seam. The strobed design offers high flexibility and low manufacturing costs and is particularly suitable for subsequent direct soling. Due to the linked connection of the upper with the insole through the strobing seam, the water permeability occurring in the sole area and the associated reduced weather resistance represent a problem with troubled sports shoes.

PRESENTATION OF THE INVENTION

It is therefore an object of the invention to provide a method for producing a sports shoe and a sports shoe that at least partially improves the prior art of sports shoes, particularly with regard to weather resistance. This task is solved by the independent claims. Advantageous designs of the invention are given in the dependent claims and in the vorlie lowing description and the drawings.

The invention relates to a method for producing a sports shoe with a waterproof sole construction, the sports shoe comprising a shaft, a shaft membrane, an insole and a water-impermeable insole layer, the method comprising the steps of: a. Cohesive connection of the stem membrane with the stem; b. Cohesive connection of an inner area of a surface of the insole to an inner area of a surface of the insole layer such that a peripheral outer area of the insole remains connection-free with respect to the insole layer and the insole layer protrudes beyond the insole with a protrusion; c. Connecting the insole to the upper by means of a strobe seam; d. Cohesive connection of the insoles to the upper membrane in an overlap area of the protrusion of the insole layer and the upper membrane such that the strobing seam in the shoe interior is covered by the insole layer.

The shaft membrane is preferably flexible and gas-permeable or breathable. In one embodiment, the shaft membrane is a mesh-like textile. In order to increase breathability, the shaft membrane is preferably integrally bonded to the shaft by means of punctual gluing. The shaft membrane is advantageously hydrophilic, so that the shaft membrane can absorb moisture expelled from the foot and conduct it to the outside. The shaft membrane can be a Sympatex® membrane, for example. In one variant, the shaft membrane is impermeable to water but permeable to gas.

The insole layer preferably contains a water-impermeable material. The insole layer can be a membrane or a plastic film, e.g. B. made of PVC. The method offers the advantage that the strobing seam can be covered by the integral connection of the insole layer with the upper membrane in the overlap area of the insole layer and the upper membrane in such a way that water cannot get into the inside of the shoe. The waterproofness of the sole construction therefore advantageously contributes to the waterproofing of the insole layer and the integral connection of the insole layer to the upper membrane in the overlap area of the insole layer and the upper membrane. The size of the overhang of the insole layer can be made variable. The protrusion is preferably so large that a sufficiently large overlap area with the upper membrane is provided, which enables a reliable material connection between the insole layer and the upper membrane.

In one embodiment, the insole is connected to the upper and the upper membrane by the strobe seam.

Preferably, the inner region of the insole layer with the inner loading area of the insole is integrally connected by a flat adhesive. In one configuration, the insole layer can be on the side facing the insole Side can be provided with a coating, which can be activated, for example, by heat and can thus bring about a material connection between the insole layer and the insole in the inner region of the insole.

The insole layer is connected to the upper membrane in the overlap area of the protrusion of the insole layer and the upper membrane, preferably by welding. A heatable last or a heatable base that can be moved inside the shoe can be used for welding.

When the insole layer is materially connected to the upper membrane in the overlap area of the overlap of the insole layer and the upper membrane, the sports shoe can already be in its final orientation, ie with the inside of the shoe or with the upper membrane or the lining facing inwards. In this embodiment in particular, the use of a heatable base which can be displaced inside the shoe or of a heatable strip for the cohesive connection is advantageous. This embodiment also offers the advantage that the selection of materials that can be used for the shaft can be increased. For example, stiffer materials can also be used for the shaft to stabilize the shaft, since the sports shoe already has its final orientation when the insole layer is firmly bonded to the shaft membrane and then no longer has to be turned inside out. Alternatively, the sports shoe can be turned inside out when the insoles are connected to the upper in the overlap area of the overlap of the insole layer and the upper membrane, ie with the inside of the shoe or with the upper membrane or the lining oriented outwards. For example, after connecting the insole to the upper, the sports shoe can be turned inside out by the strobing seam in order to connect the insole layer to the upper membrane from the outside. This embodiment offers the advantage that the insole layer can be more easily connected to the upper membrane, since the inside of the shoe is turned inside out and the overlap area is accordingly accessible from the outside. After the cohesive connection of the insole layer to the upper membrane, the sports shoe can be turned back into its final orientation.

Optionally, that part of the insole layer which is arranged above the outer area of the insole can, at least partially, also be integrally connected to the insole when the insole layer is firmly bonded to the upper membrane. For this purpose, the insole layer can be provided in one embodiment on the side facing the insole with a coating which is activated when the insole layer is firmly connected to the upper membrane, for example by heat during welding, and for a firmly connected connection of the insole layer with the Insole in the outer area of the insole leads. The cohesive connection of the insole layer to the insole in the outer area of the insole when the insole layer is firmly connected to the upper membrane has the advantage that gaps between the insole layer and the insole in the outer area of the insole, in which water can accumulate, can be avoided.

Through the integral connection of the inner area of the insole layer with the inner area of the insole before the integral connection of the insole layer with the upper membrane, a wrinkle-free connection of the overhang of the insole layer with the upper membrane can advantageously be provided. Folding the insole layer is usually undesirable because e.g. parts of the strobing seam can be exposed by folding and this can encourage water to enter the inside of the shoe. In one embodiment, the insole is connected to the upper by holding the protrusion of the insole layer up to the inner region of the surface of the insole in such a way that the outer region of the insole is exposed and the strobing seam is attached to the outer region.

Because an all-round outer area of the insole remains connection-free with respect to the insole layer, the excess of the insole layer can be kept apart from the inner area of the surface of the insole when the strobe seam is applied. Reliable attachment of the strobe seam can be supported in this way, since the outer area of the insole is exposed when the strobe seam is attached. In one embodiment, the insole layer is a gas-permeable membrane. As a rule, the insole is gas-permeable. In the case of a gas-permeable outsole, for example an outsole with pores, a gas-permeable insole layer has the advantage that breathability can be provided in the sole area, while the sole construction is watertight with the aid of the water-impermeable insole layer.

In one embodiment, the insole layer is a plastic film, preferably made of PVC.

This offers the advantage of an inexpensive insole layer that is also impermeable to water. In one embodiment, the shaft membrane is cohesively connected to the shaft by a punctual adhesive.

The breathable activity of the athletic shoe in the shaft area can be increased through the punctiform gluing of the shaft membrane to the shaft.

In one embodiment, the shaft membrane is integrally connected to the shaft in such a way that the shaft membrane in the sole region of the shaft projects beyond the shaft with a protrusion.

This offers the advantage that the overlap area of the protrusion of the insole layer and the upper membrane can be increased, which increases the reliability of the cohesive connection of the insole layer to the upper membrane. In one configuration, the shaft membrane is connected to the shaft in such a way that the edge of the shaft membrane in the sole region of the shaft is flush with the edge of the shaft.

This offers the advantage of simpler manufacture, since an irregular protrusion of the shaft membrane beyond the edge of the shaft can be cut off in a simple manner in such a way that the edge of the shaft membrane in the sole region of the shaft is flush with the edge of the shaft. If necessary, the overhang of the insole layer can be adjusted in such a way that the overlap area of the overhang of the insole layer and the upper membrane is of a sufficient size.

Optionally, the edge of the stem membrane can protrude a little from the edge of the stem. A sufficiently large overlap of the insole layer can nevertheless ensure a sufficient overlap area between the upper membrane and insole layer for a reliable material connection.

A great flexibility can therefore advantageously be provided with regard to the configuration of the edge of the shaft membrane at the edge of the shaft.

In one embodiment, the insole layer is welded to the upper membrane during the integral connection by means of a heatable last or a heatable base. When the insole layer is firmly bonded to the upper membrane, the sports shoe can already be in its final orientation, ie with the inside of the shoe or with the upper membrane or the lining facing inwards, or turned inside out, ie with the inside of the shoe or the upper membrane or the feed is oriented outwards.

In one embodiment, when the inner region of a surface of the insole is bonded to the inner region of a surface of the insole layer, the insole is connected to the insole layer in such a way that the overhang of the insole layer and the insole layer in the outer region protrude from the insole.

The protrusion of the insole layer and the insole layer in the outer area offers the advantage that the connection of the insole to the shaft is facilitated, since the protrusion of the insole layer can be kept away more easily when the strobing seam is attached. In one embodiment, the shaft membrane comprises a one-piece fluff membrane which is brought from a flat shape into a final shape corresponding to the shaft in such a way that parts of the edge of the fluff membrane meet in the heel region along a butt line and the butt line is sealed by a sealing tape. Preferably, the main membrane of the shaft membrane in the final shape has only a single seam along the butt line, which can be sealed with a sealing tape. The reduction in the number of seams has the advantage that the consumption of sealing tape, which is generally cost-intensive, can be reduced. Furthermore, the reduction in the number of seams generally increases the weather resistance of the sports shoe, since seams typically represent potential water entry points.

In one configuration, the shaft membrane comprises a tab membrane, which is connected to the main membrane in a sealed manner via at least one sealing tape.

The invention further relates to a sports shoe with a waterproof sole construction, produced by a method according to the present description. The sports shoe comprises a shaft, a shaft membrane which is integrally connected to the shaft, an insole and a water-impermeable insole layer, an inner region of a surface of the insole layer being integrally connected to an inner region of a surface of the insole in such a way that the insole layer is connected via the The insole protrudes with a protrusion, the insole being connected to the upper by a strobe seam, and the insole layer is integrally bonded to the upper membrane in an overlap region of the overhang of the insole layer and the upper membrane such that the strobed seam inside the shoe is connected by the insole layer is covered. In one embodiment, the insole is connected to the upper and the upper membrane by the strobing seam.

In one embodiment of the sports shoe, the insole layer is a gas-permeable membrane.

5 In one embodiment of the sports shoe, the insole layer is a plastic film, preferably made of PVC.

In one embodiment of the sports shoe, the insole layer covers the strobing seam without wrinkles.

LIST OF FIGURES U Embodiments of the invention are explained in more detail with reference to the following figures and the associated description. Show it :

Figure 1 is a plan view of an insole from the bottom oriented to the tread of a sports shoe.

2 shows a perspective view of the insole from FIG. 1 from the upper side oriented towards the inside of the shoe;

3a shows a cross-sectional view of a sports shoe;

3b shows an enlarged detail from the cross-sectional representation

Fig. 3a. DESCRIPTION OF EXEMPLIC PLARIC EXECUTION

In order to illustrate the invention, a preferred embodiment is described in more detail with reference to the figures.

FIG. 1 shows a top view of an insole 1 from the underside oriented towards the tread of a sports shoe. With the insole 1, a waterproof insole layer 2 is integrally connected by a flat adhesive, which extends over an inner region 3 1 of the insole 1 and an inner region 2 1 of the insole layer 2. A circumferential outer area 32 of the insole 1 is connection-free, so that the insole layer 2 rests on the insole 1 over the outer area 32. The inner region 3 1 and the outer region 32 are separated by a circumferential boundary line 3, which is shown in dashed lines in the figure. From the insole layer 2, the projection 22 is visible in the figure, with which the insole layer 2 protrudes over the insole 1. FIG. 2 shows a perspective view of the insole 1 from FIG. 1 from the upper side oriented toward the inside of the shoe. The insole 1 is covered by the insole layer 2, which in an inner region 3 1 of the insole 1 and an inner region 2 1 of the insole layer 2 is integrally covered by a flat adhesive with the insole 1. In the figure, part 23 of the insole layer 2 is shown held away, so that the insole 1 can be seen below it. The part 23 of the insole layer 2 can be kept away from the insole 1 up to the boundary line 3. By holding it away, the insole can 1 along the circumferential edge by a strobe seam with a shaft, without the insole layer 2 being caught by the strobe seam.

FIG. 3a shows a cross-sectional view of a sports shoe 10 with an insole 1 according to FIG. 1. An insole layer 2 is cohesively connected to the insole 1 by a 5-area adhesive 42 in an inner region 3 1 of the insole 1 and an inner region 2 1 of the insole layer 2. The insole layer 2 is on the side of the insole 1 oriented towards the inside of the shoe. The insole layer 2 lies on the insole 1 in a connection-free outer area 32 of the insole 1 with respect to the insole layer 2. This is illustrated in the figure by a part of the insole layer 2 protruding in the outer area 32 of the insole 1 in the direction of the shoe interior , When the insole layer 2 is integrally connected to the upper membrane 6, the part of the insole layer 5 2 which is arranged over the outer region 32 of the insole 1 and initially lies without connection on the outer region 32 can optionally also be integrally connected to the insole 2. To the

Insole 1 connects to a shaft 5 of sports shoe 10. In the interior of the shoe, a shaft membrane 6 is arranged on the shaft 5, which is connected to the shaft 5 by a punctiform adhesive 44. The edge of the shaft membrane 6 is designed flush in the sole area of the sports shoe 10 with the edge of the shaft 5. The upper membrane 6 and the upper 5 are connected to the insole 1 by a strobe seam 41. The insole layer 2 is integrally connected to the upper membrane 6 by a weld 43 in the overlap region of the overhang 22 of the insole layer 2 and the upper membrane 6. The strobe seam 41 is would be covered by the insoles 2 so that water from the outside cannot get through the strobing seam 41 into the inside of the shoe.

Figure 3b shows an enlarged section of the cross-sectional view of Figure 3a within the circle C in Figure 3a, in which in particular the area around the Strobelneam 41, with the weld 43 illustrated by lines in the overlap area of the overhang 22 of the insole layer 2 and the upper membrane 6, is clearly visible.

Claims

claims 1. A method for producing a sports shoe (10) with a waterproof sole construction, the sports shoe (10) comprising a shaft (5), a shaft membrane 5 ran (6), an insole (1) and a waterproof insole layer (2), the method comprising the steps: a. Material connection of the shaft membrane (6) to the shaft (5); b. Material connection of an inner area (31) of a surface of the insole (1) to an inner area (21) of a surface of the insole layer (2) such that a peripheral outer area (32) of the insole (1) with respect to the insole layer (2) remains connection-free and the insole layer (2) overhangs the insole with an overhang (22); c. Connecting the insole (1) to the upper (5) by means of a stitched seam 5 (41); d. Cohesive connection of the insole layer (2) to the shaft membrane (6) in an overlap area of the overhang (22) of the insole layer (2) and the shaft membrane (6) such that the strobing seam (41) inside the shoe through the insole layer (2) is covered. 2. The method according to claim 1, characterized in that the insole (1) is connected to the shaft (5) by the protrusion (22) of the insole layer (2) up to the inner region (3 1) of the surface of the insole (1) is held in such a way that the outer region (32) of the insole (1) is exposed, and the stro seam (41) is attached to the outer region (32) becomes. 3. The method according to claim 1 or 2, characterized in that the insole layer (2) is a gas-permeable membrane or a plastic film, preferably made of PVC, includes. 4. The method according to any one of the preceding claims, characterized in that the shaft membrane (6) with the shaft (5) by a spot adhesive (44) is integrally connected. 5. The method according to any one of the preceding claims, characterized in that the shaft membrane is integrally connected to the shaft such that the shaft membrane in the sole region of the shaft protrudes with a protrusion over the shaft. 6. The method according to any one of claims 1 to 4, characterized in that the shaft membrane (6) with the shaft (5) is integrally connected such that the edge of the shaft membrane (6) in the sole region of the shaft (5) with the edge of the Shaft (5) is flush. 7. The method according to any one of the preceding claims, characterized in that the insole layer (2) is welded to the upper membrane (6) during the integral connection by means of a heatable strip or a heatable base. 8. The method according to any one of the preceding claims, characterized in that during the integral connection of the inner region (3 1) of a surface of the insole (1) with the inner region (21) of a surface of the insole layer (2), the insole ( 1) is connected to the insole layer (2) in such a way that the protrusion (22) of the insole layer (2) and the insole layer (2) in the outer region (32) protrude from the insole. 9. The method according to any one of the preceding claims, characterized in that the Schaftmem bran a one-piece main membrane comprises, which is placed in such a way from a flat form to the shaft corresponding final shape that sammentreffen in the heel part of the edge of the main diaphragm along a joint line to ^¬ and the joint line is sealed with a sealing tape. 10. The method according to claim 9, characterized in that the shaft membrane comprises a tab membrane which is connected to the main membrane in a sealed manner via at least one sealing tape. 1 1. The method according to any one of the preceding claims, characterized in that the sports shoe (1 0) in the cohesive connection of the insole layer (2) with the shaft membrane (6) in the overlap region of the overhang (22) of the insole layer (2) and Shaft membrane (6) is in its final orientation, the insole layer (2) and the shaft membrane (6) are preferably welded during the integral connection by means of a heatable base or a last that can be displaced in the interior of the shoe. 12. The method according to any one of claims 1 to 1 0, characterized in that the sports shoe (1 0) in the integral connection of the insole layer (2) with the Shaft membrane (6) in the overlap region of the overhang (22) of the insole layer (2) and the shaft membrane (6) is turned inside out and the insole layer (2) is connected from the outside to the shaft membrane (6) in a materially bonded manner. 13. Sports shoe (10) with a waterproof sole construction, made with the 5 The method according to any one of the preceding claims, comprising a shaft (5), a shaft membrane (6) integrally connected to the shaft (5), an insole (1) and a water-impermeable insole layer (2), an inner region (21 ) a surface of the insole layer (2) is integrally connected to an inner region (31) of a surface of the insole (1) such that the insole layer (2) protrudes over the insole (1) with a protrusion (22);  the insole (1) being connected to the upper (5) by a strobe seam (41); and the insole layer (2) is materially connected to the upper membrane (5) in an overlap area of the overlap (22) of the insole layer (2) and the upper membrane (6) such that the strobing seam (41) in the shoe interior 5 through the insole layer (2) is covered. 14. Sports shoe (10) according to claim 13, characterized in that the insole layer (2) comprises a gas-permeable membrane or a plastic film, preferably made of PVC. 15. sports shoe (10) according to any one of claims 13 to 14, characterized in that the insole layer (2) covers the strobing seam (41) without wrinkles.