EP2263489A1 - Watertight shoe construction and method for its production - Google Patents

Abstract

The waterproof footwear has an upper (13) and an insole (15). The upper material (17) has an end zone (27) on the sole side, and a waterproof layer (19) with an end zone (23), at the inner side of the upper material stitched (25) to the insole. At the stitching there is a gap (33) at least partially around the bottom of the upper material and the insole for a liquid sealant. The end of the waterproof layer extends at least into the stitching to be sealed for waterproofing.

Description

Waterproof footwear and method of making the same

The invention relates to footwear with a shaft which is constructed with an upper material and with a waterproof functional layer arranged on the inside of the upper material, wherein a sole-side upper end region is connected to an insole and a sole-side functional layer end region is sealed with a sealing material leading to water-tightness. An example of such footwear is from the EP 0 298 360 B1 the applicant known.

The invention also relates to a method for producing such footwear.

In the footwear according to EP 0 298 360 B1 ends the Obermaterialendbereich at a predetermined distance from serving as an insole insole, this distance is bridged by a liquid material can be traversed by mesh tape, one side of which is sewn to the Obermaterialendbereich and the other longitudinal side of the insole. A sole-side functional layer end extends down to the insole and is also sewn with this. This known footwear has a molded outsole. When molding the outsole, the net band is penetrated by liquid outsole material, whereby the outside of the functional layer is flown by such outsole material which, after curing, effects a watertight sealing of the functional layer in the functional layer end region.

With this so-called net band solution, which has proven itself very well, it has been possible to achieve a particularly high and reliable waterproofness of breathable shoes.

The sewing of the net tape on the two long sides requires a certain effort with a corresponding cost. Also, in places where the insole has a small radius of curvature, especially for children's shoes, it is not always easy to sew the net without wrinkles.

The present invention provides footwear that can overcome such problems, which is inexpensive, which is easier to handle in the production even in places with a small radius of curvature and leads to good water resistance.

The invention makes footwear according to claim 1 available, which can be prepared according to claim 19. Embodiments of the footwear according to the invention and the method according to the invention are given in the dependent claims.

Footwear according to the invention comprises a shaft which is constructed with an upper material having a sole-side upper end region and with a waterproof functional layer arranged on the inner side of the upper and having a sole-side functional layer end region. In addition, such footwear has an insole and the upper end region with the insole connecting connecting device which allows at least a portion of the shaft circumference circumferentially between the Obermaterialendbereich and the insole such a distance that it can be flowed through by applying liquid sealing material. The functional layer end region extends at least into the region of the connecting device and is sealed watertight from in the manufacture of footwear by the connecting device passed sealant.

In the method according to the invention, footwear of the type mentioned is produced by connecting the upper end region to the inner sole by means of a connecting device revolving around at least part of the shaft circumference in such a way that a distance through which liquid can flow can be produced between the upper end region and the inner sole the Funktionsschichtendbereich is designed such that it extends to at least in the region of the connecting means, and that, while the Obermaterialendbereich and the insole are held by the connecting means on a liquid-flow distance from each other, on the outside of the connecting means befindlichem in the liquid state , Waterproofing leading sealant material is applied so that it flows through the liquid-permeable connection means through the Funktionsschichtendbereich.

The functional layer end region is formed in such a way that a surface region of the functional layer, only a cut edge of the functional layer or both, is flown by the sealing material.

In one embodiment of the invention, a lining is arranged on the inside of the functional layer, which is either a separate lining layer or a lining layer connected to the functional layer to form a laminate.

In embodiments of the invention, the insole is an insole or other material which closes the shaft at its sole-side end, for example a midsole or gasket.

In one embodiment of the invention, the connecting device is formed by a seam-like or seam-like connecting device.

In one embodiment of the invention, the connecting device is formed by an expandable seam, which is either sewn loosely, so that it can flow through at least in a stretched or stretched state of liquid sealing material, or is sewn with a stretchable yarn, so that the sole side In the manufacture of the footwear, the upper end region and the inner sole can be brought apart by stretching the yarn to such a distance that liquid sealing material can flow through the stretched seam. The stretchable yarn may be elastically extensible yarn or non-elastically extensible yarn.

In one embodiment of the invention, the connecting device is formed by a stitching seam, which is either sewn loosely or sewn with stretchable yarn. But there are also other types of seams, such as a stitching or a cross seam, which are sewn loosely or sewn with stretchy yarn.

However, a connecting device according to the invention need not be formed by a sewing seam. Other types of connection means are also suitable as long as they only form a connection between the upper material and the inner sole through which liquid material can flow. Examples of unsewn connection means suitable for the invention are adhesive threads or adhesive strips which are adhered to the upper and the insole, loops or individual rings which are connected to the upper and the insole, or staple-like connecting elements connected to the upper and be connected with the insole.

In footwear with a connecting device according to the invention in the form of a seam is in the region of the connection between the upper material and insole only a single seam required, which is also completely unproblematic even in those places where the insole has a small radius of curvature. Everything compared to footwear with conventional seam, as for example in Fig. 1 the already mentioned EP 0 298 360 B1 is shown, the seam is to be designed so that it can be flowed through by liquid material, ie, has a distance between the upper and the insole or (for example, by stretching) allows, through which a zone located in the region of the connecting device the functional layer with liquid sealing material can be flowed against and thereby sealable with the sealing material.

In the case of a seam-shaped joining device according to the invention, this means that the sewing machine used for the production of this seam only needs to be adjusted in such a way that it creates a seam through which liquid material can flow, or sews expansible yarn with a conventional and conventionally set sewing machine and this is stretched during the application of liquid sealing material such that said zone of the functional layer of the liquid sealing material through the stretched seam is flowed past.

Accordingly, a seam according to the invention does not involve any greater outlay than that required for a conventional seam, for example for the in Fig. 1 said EP 0 298 360 B1 Shoe of the prior art shown, is required. The labor costs for the production of a seam according to the invention are thus not higher than in the production of the seam of footwear of the cited prior art.

In one embodiment of the invention, the sole side Funktionsschichtendbereich is glued to the insole.

In one embodiment of the invention, in addition to the connecting device, a substantially non-expandable fixing seam is provided, by means of which the sole-side functional layer end region is connected to the insole but not to the sole-side upper end region.

In one embodiment of the invention, the sewn seam is formed by a stitching seam.

In one embodiment of the invention, the upper terminates a predetermined distance above the insole, when the distance between the upper and insole is bridged by a material strip impermeable to sealing material or liquid sole material, the strip of material is bridged by an upper seam to the upper and by a lower seam connected to the functional layer and / or with the insole, and forms at least the upper of the two seams a flow-through connecting device in the form of a seam expandable as a result of loose sewing or sewing with stretchable yarn.

The sealing material can either be sole material, in particular outsole material of a molded outsole, or a sealing adhesive which liquefies upon application, or which can be liquefied upon application by activation. In one embodiment of the invention, a reactive hot melt adhesive is used as the sealing adhesive, which in the fully reacted state leads to a particularly high and permanent water-tightness of the sealing point.

Reactive hot melt adhesive on the one hand in the liquid state before Ausreagieren a particularly high creep and on the other hand leads in the ausgeregierten state to a particularly high and lasting water resistance. The reactive hot melt adhesive can be applied with very simple means, for example brushing, spraying or applying in the form of an adhesive strip or adhesive bead, wherein the reactive hot melt adhesive by heating make them adhesive and can be fixed in the sealed area before the reaction and the associated permanent bonding begins with the functional layer.

The bonding of the reactive hot-melt adhesive or other sealing material with the functional layer becomes particularly intimate if the reactive hot-melt adhesive or the other sealing material is mechanically pressed against the functional layer after being applied to the connecting band. For this purpose, preferably a pressing device, e.g. In the form of a Anpreßkissens, with a non-wettable by the reactive hot melt adhesive or other sealing material and therefore with the reactive hot melt adhesive or other sealing material not adhering, smooth material surface, such as non-porous polyterafluoroethylene (also known under the trade name Teflon), silicone or PE (polyethylene) , Preferably, for this purpose, a Anpreßkissen, for example in the form of a rubber pad or air cushion, the Anpreßoberfläche with a film of one of said materials, for example, non-porous polytetrafluoroethylene, coated, or one arranges before the pressing between the reactive hot melt adhesive or the other sealing material provided sole structure and the Anpreßkissen to such a film.

Preferably, a moisture-curable reactive hot melt adhesive is used, which is applied to the area to be bonded and exposed to moisture to react. In one embodiment of the invention, a thermally activatable and moisture curable reactive hot melt adhesive is used which is thermally activated, applied to the adherend and exposed to moisture to react.

Reactive hot melt adhesives are adhesives which prior to activation consist of relatively short molecular chains having an average molecular weight in the range from about 3000 to about 5000 g / mol, are non-adhesive and, if appropriate after thermal activation, are brought into a reaction state in which the relatively short molecular chains cross-link to long molecular chains and harden, predominantly in a humid atmosphere. In the reaction or curing period, they are adhesive. After crosslinking, they can not be reactivated. When reacting, three-dimensional crosslinking of molecular chains occurs. The three-dimensional cross-linking leads to a particularly strong protection against the penetration of water into the adhesive.

Suitable for the purpose according to the invention are e.g. Polyurethane reactive hot melt adhesives, resins, aromatic hydrocarbon resins, aliphatic hydrocarbon resins and condensation resins, e.g. in the form of epoxy resin.

Particular preference is given to polyurethane reactive hot melt adhesives, hereinafter referred to as PU reactive hot melt adhesives.

In a practical embodiment of the invention, a PU reactive hot melt adhesive is used which is available under the name IPATHERM S 14/242 from H.P. Fuller in Wels, Austria. In another embodiment of the invention, a PU reactive hot melt adhesive is used, which is available under the name Macroplast QR 6202 from Henkel AG, Dusseldorf, Germany.

In one embodiment, in which the connecting device according to the invention is formed by a sewing seam, monofilament sewing thread is used, which has a comparatively small yarn diameter compared to multifilament sewing thread, so that more surface of the functional layer zone located in the region of the connecting device is flowed through by liquid sealing material than with multifilament sewing thread with a larger yarn diameter. In addition, with monofilament sewing thread, the risk of multifilament sewing thread that water is passed along the sewing thread as a result of capillary action is eliminated. Sewing machines, by means of which a seam according to the invention can be produced by loose sewing, are available under the name Strobelmaschinen from the company Strobel in Munich, Germany.

Monofilament sewing thread, which is well-suited for the production of a connecting device according to the invention, is available under the name Transfil from Amann & Söhne GmbH & Co. KG, D-74357 Bönnigheim, Germany. As a stretchable yarn for a connecting device according to the invention, a suitable from the mentioned company Amann under the name Serafil 40/3 thread, which has a non-destructive extensibility of 25%.

In one embodiment of the invention, a functional layer which is not only water-impermeable but also permeable to water vapor is used. This allows the production of waterproof shoes, which remain breathable despite waterproofness.

Suitable materials for the waterproof, water-vapor-permeable functional layer are in particular polyurethane, polypropylene and polyester, including polyether esters and their laminates, as described in the publications US-A-4,725,418 and US-A-4,493,870 are described. However, particularly preferred is stretched microporous polytetrafluoroethylene (ePTFE), as described for example in the publications US-A-3,953,566 such as US-A-4,187,390 and stretched polytetrafluoroethylene provided with hydrophilic impregnating agents and / or hydrophilic layers; see for example the publication US-A-4,194,041 , A microporous functional layer is understood to be a functional layer whose average pore size is between about 0.2 μm and about 0.3 μm.

The pore size can be measured with the Coulter Porometer (trade name) manufactured by Coulter Electronics, Inc., Hialeath, Florida, USA. A functional layer is considered to be "waterproof", if appropriate including seams provided on the functional layer, if it ensures a water inlet pressure of at least 1x10 ⁴ Pa. Preferably, the functional layer material ensures a water inlet pressure of over 1x10 ⁵ Pa. The water inlet pressure shall be measured by a test method in which distilled water is applied at 20 ± 2 ° C to a sample of 100 cm ^{2 of} the functional layer with increasing pressure. The pressure increase of the water is 60 ± 3 cm Ws per minute. The water inlet pressure then corresponds to the pressure at which water first appears on the other side of the sample. Details of the procedure are given in ISO standard 0811 from the year 1981.

As a "water vapor permeable" a functional layer is considered, if it has a water vapor transmission rate Ret of less than 150 m2xPaxW-1. The water vapor permeability is tested according to the Hohenstein skin model. This test method is described in DIN EN 31092 (02/94) or ISO 11092 (1993).

Whether a shoe is waterproof, for example, with a centrifuge assembly in the US-A-5,329,807 be tested type tested.

If ePTFE is used as the functional layer, the reactive hotmelt adhesive can penetrate into the pores of this functional layer during the bonding process, which leads to a mechanical anchoring of the reactive hotmelt adhesive in this functional layer. The functional layer consisting of ePTFE can be provided with a thin polyurethane layer on the side with which it comes into contact with the reactive hot melt adhesive during the bonding process. When using PU reactive hotmelt adhesive in conjunction with such a functional layer, not only mechanical bonding but also chemical bonding between the PU reactive hotmelt adhesive and the PU layer on the functional layer occurs. This leads to a particularly intimate bonding between the functional layer and the reactive hot melt adhesive, so that a particularly durable water resistance is ensured.

The extension of the sole side functional layer end relative to the sole side upper end and / or the insole can be adapted to the requirements of the particular footwear. All that is necessary for the functioning of the invention is that the sole-side functional layer end extends at least into the area of the connection device, so that sealing material flowing through the connection device can impact the functional layer and seal it.

The minimum distance which the connecting means should or should allow during the application of liquid sealing material depends on the viscosity of the liquid sealing material and on the pressure with which the liquid sealing material is applied. The lower the viscosity and the higher the pressure, the lower this distance can be. In embodiments of the invention, the distance between the upper material end and the insole, which the connecting device has or allows, is in the range of about 1/10 mm to about 12 mm. In practical embodiments, the distance between the upper and the inner sole is in the range of 1 mm to 6 mm, in a more specific case between 1 mm and 4 mm. For sealing material which has a particularly low viscosity in the liquid state and which is sprayed on at a relatively high pressure, a distance of the connection unit which is below 2 mm and is, for example, in the range from 0.1 mm to 1 mm may suffice. Since the flow of a relatively small area of the functional layer may already be sufficient to seal it with the sealing material, the distance which the connecting device has or does not need to be much more than 2 mm in many practical embodiments. A much greater distance, for example in the range of 4 to 5 mm or higher, will at best be desirable if low Pressure sealing material is applied, which has a comparatively high viscosity in the liquid state.

For example, leather or textile fabrics are suitable as upper upper material. The textile fabrics may, for example, be woven, knitted, knitted, nonwoven or felt. These fabrics may be made of natural fibers, for example of cotton or viscose, of synthetic fibers, for example of polyesters, polyamides, polypropylenes or polyolefins, or of mixtures of at least two such materials.

When using a functional layer, a lining material is normally arranged on the inside. As lining material, which is often combined with the functional layer to form a functional layer laminate, the same materials as previously stated for textile upper material are suitable. The functional layer laminate may also have more than two layers, wherein on the side remote from the lining layer side of the functional layer may be a textile side.

The outsole of the footwear according to the invention may be made of waterproof material, e.g. Rubber or plastic, such as polyurethane, or made of non-waterproof, but breathable material such as leather in particular, provided with rubber or plastic inlaid leather or provided with Lederintarsien rubber or plastic. In the case of non-waterproof outsole material, the outsole may be made watertight thereby, while maintaining the breathability, that it is provided with a waterproof, water vapor permeable functional layer at least at locations where the sole construction has not already been waterproofed by other means.

In the case of a molded sole, for example outsole, as a sealing material, this can for example consist of polyurethane (PU).

The insole of the footwear according to the invention may be made of viscose, nonwoven, e.g. Polyester fleece, may be added to the melt fibers, leather or bonded leather fibers. An insole is available under the name Texon insole from Texon Mockmuhl GmbH in Mockmuhl, Germany. Insoles made of such materials are permeable to water. An insole of such or other material may be made watertight by placing a layer of waterproof material on one of its surfaces or in its interior. For this purpose, e.g. a film with capping material V25 from Rhenoflex in Ludwigshafen, Germany, be ironed. If the insole is not only waterproof but also water vapor permeable, it is provided with a waterproof, water vapor permeable functional layer, which is preferably constructed with ePTFE (expanded, microporous polytetrafluoroethylene). For this purpose, for example, a laminate which contains a waterproof, water vapor-permeable functional layer and under the trade name TOP DRY of the W.L. Gore & Associates GmbH, Putzbrunn, Germany.

Another possibility is to glue such a laminate (TOP DRY) on the insole, whereby the shaft is made waterproof before applying an outsole.

Fig. 1

eine Schnittdarstellung einer ersten Ausführungsform eines erfindungsgemäß ausgebildeten Schuhs, bevor dieser auf einen Leisten aufgespannt wird;

Fig. 2

eine Schnittdarstellung wie in Fig. 1, jedoch nachdem der Schuh auf einen Leisten aufgespannt worden ist;

Fig. 3

eine Darstellung entsprechend Fig. 2, jedoch nach dem Aufbringen von Dichtungsmaterial in Form eines Klebstoffes;

Fig. 4

eine Darstellung entsprechend Fig. 2, jedoch nach dem Anspritzen einer Sohle als Dichtungsmaterial;

Fig. 5

eine Schnittdarstellung einer zweiten Ausführungsform eines erfindungsgemäß ausgebildeten Schuhs, nachdem eine erste Naht erzeugt worden ist und bevor dieser Schuh auf einen Leisten aufgespannt wird;

Fig. 6

eine Schnittdarstellung wie in Fig. 5, jedoch nachdem der Schuh ein erstes Mal auf einen Leisten aufgespannt worden ist;

Fig. 7

eine Schnittdarstellung wie in Fig. 5, jedoch nachdem der Schuh wieder vom Leisten genommen und eine zweite Naht erzeugt worden ist;

Fig. 8

eine Schnittdarstellung wie in Fig. 6, jedoch nachdem der Schuh ein zweites Mal auf einen Leisten aufgespannt worden ist;

Fig. 9

eine Schnittdarstellung einer dritten Ausführungsform eines erfindungsgemäß ausgebildeten Schuhs, nachdem dieser auf einen Leisten aufgespannt worden ist; und

Fig. 10

eine Schnittdarstellung einer vierten Ausführungsform eines erfindungsgemäß ausgebildeten Schuhs, nachdem dieser auf einen Leisten aufgespannt worden ist.

The invention will now be explained in more detail by means of embodiments. In the drawings, as highly schematic, not to scale representations of a part of a shoe, for example in the forefoot of the shoe:

Fig. 1

a sectional view of a first embodiment of an inventively designed shoe before it is clamped on a last;

Fig. 2

a sectional view as in Fig. 1 but after the shoe has been put on a last;

Fig. 3

a representation accordingly Fig. 2 but after the application of sealing material in the form of an adhesive;

Fig. 4

a representation accordingly Fig. 2 but after injection molding a sole as a sealing material;

Fig. 5

a sectional view of a second embodiment of an inventively designed shoe after a first seam has been produced and before this shoe is clamped on a last;

Fig. 6

a sectional view as in Fig. 5 but after the shoe has been put on a last for the first time;

Fig. 7

a sectional view as in Fig. 5 but after the shoe has been removed from the last and a second seam has been produced;

Fig. 8

a sectional view as in Fig. 6 but after the shoe has been stretched a second time on a last;

Fig. 9

a sectional view of a third embodiment of an inventively designed shoe after it has been clamped on a last; and

Fig. 10

a sectional view of a fourth embodiment of an inventively designed shoe after it has been clamped on a last.

All figures show a highly schematic sectional view of each part of a not yet complete shoe in a cross section in the forefoot area. In all embodiments, in the figures, manufacturing phases are shown before the shoe is stretched on a last and manufacturing phases after the shoe has been stretched on a last. If this shoe is spoken, then although this shoe is not quite finished, because, except for the representation in Fig. 4 , at least the outsole is missing. When the insole shown in the figures is an insole, the outsole is attached to it, either by gluing or by splashing an outsole.

The FIGS. 1 to 4 show a first embodiment of the invention, in which at the connecting means a single seam is involved. FIGS. 3 and 4 of these embodiments show two different variants of this embodiment, wherein in the case of Fig. 3 the sealing of the functional layer takes place by means of a sealing material, while in the case of Fig. 4 the sealing takes place by means of material of a molded sole. The FIGS. 5 to 10 show three further embodiments of the invention, in which two seams are used in the region of the connecting device. In the embodiment of the FIGS. 7 and 8 As with all previous embodiments, the lower end of the upper is connected to an insole via a loosely sewn or stretchable one of the two seams. In the in the Figures 9 and 10 embodiments shown is located between two seams a strip of material which is secured by means of one of the two seams to the lower end of the upper and by means of the other of the two seams on the insole. In the embodiment of the FIG. 9 the lower suture is firm and the upper suture is sewn loosely or stretchably. In the embodiment of the FIG. 10 Both seams are sewn loosely or stretchably.

The FIGS. 1 to 4 show sectional views of a shoe 11 according to a first embodiment of the invention with a shaft 13 and an insole 15, which is for example an insole 15. The shaft 13 comprises an upper 17, a waterproof functional layer 19 and a textile layer 21, which is, for example, a lining textile. The functional layer 19 is located between the outer material 17 and the textile layer 21. In the embodiment shown in the figures, the functional layer 19 and the textile layer 21 are connected to one another on a sole-side functional layer end 23 by means of a stretch seam 24. In another embodiment of such a shoe 11, not shown, the functional layer 19 and the textile layer 21 form parts of a functional layer laminate, wherein the stretch seam 24 can be dispensed with. In the illustrated embodiment, the connecting device according to the invention is formed by a loosely stitched seam seam 25 which connects a sole-side upper end 27 with the insole 15. In the illustrated embodiment, the sole-side upper end 27 extends perpendicular to the insole 15, while the sole-side functional layer end 23 and a lower sole-side textile layer end 29 are angled such that they extend parallel to the insole 15. However, this is not a requirement for the invention. In another embodiment, not shown, also the sole-side textile layer end 29 and the functional layer end 23 extend perpendicular to the insole 15.

In Fig. 1 a manufacturing phase is shown before the sealed with the insole 15 shaft 13 is stretched over a last 31. FIG. 2 shows a manufacturing phase after the shaft 13 has been stretched over the strips 31. A comparison of the two Figures 1 and 2 shows that the loosely stitched seams seam 25 is so flexible that when clamping the shaft 13 over the strips 31, a gap or gap 33 between the sole-side upper end 27 and the insole 15 may arise. Like a comparison of the two Figures 1 and 2 In addition, the lower ends 23 and 29 of functional layer 19 and textile layer 21 are designed such that they can be pushed down to the insole 15 during the tensioning of the shaft 13 over the strips 31, so that in the region of the gap 33 on the outside of the functional layer 19 a functional layer free zone 35 is formed, in which the functional layer 19 can be flown through the gap 33 with liquid sealing material 37, which leads to a watertight sealing of the functional layer 19 of the functional layer free zone 35.

In the FIGS. 3 and 4 Manufacturing phases of this embodiment are shown, which correspond to the in Fig. 2 Connect manufacturing phase and differ from this in that in the area of the functional layer free zone 35 sealing material has been applied.

Fig. 3 shows a variant of this embodiment, in which sealing material in the form of liquid plastic or adhesive 37 has been applied in the region of the stretched and thus liquid permeable Strobelnaht 25 with such viscosity and with such pressure that the adhesive 37, the functional layer free zone 35 flow and seal , In one embodiment of the invention, the adhesive 37 is formed by a reactive hot melt adhesive which, in a fully reacted state, leads to water-tightness.

That in the case of Fig. 3 only in the region of the gap 33 applied sealing material may also be a sheet-like sealing material which is cut out in strips from a plate-like adhesive material, and placed on the outside of the gap 33 and brought with activation energy, such as thermal energy, in a liquid and adhesive state. For better wetting of the Funktionsschichtfreizone 35 with the liquefied adhesive can be used in the manner already mentioned, a pressing device, which preferably consists of a non-wettable by the liquid adhesive material or coated with such material, to ensure that the liquefied adhesive 37th in sufficiently intimate contact with the functional layer 19 passes.

Fig. 4 shows a variant of this embodiment, in which the sealing material is formed by sole plastic of a molded sole 39, wherein it in the sole 39 is a molded outsole or a molded sole, which does not itself serve as an outsole but as a support for an outsole, which is attached to the sole 39, for example by gluing or sewing. Here, the sole 39 is cup-shaped and molded with such a high side wall 41, that both the Strobelnaht 25 and the functional layer free zone 35 are covered by sole material. The liquid material which is liquid during injection molding is injected under such pressure that at least part of the functional layer free zone 35 is flown by the liquid sole material and thus sealed in a watertight manner.

In order to obtain a sealing of the functional layer 19 in the sole-side end regions 23, it is not necessary for the functional layer free zone 35 to extend over the entire gap 33, nor is it necessary for the sole-side functional layer end 23 to extend beyond the gap 33. To achieve a sufficient sealing of the functional layer 19, it is sufficient for the functional layer end 23 to extend into the gap 33. It is already sufficient if the lower functional layer end 23 extends only so far into the gap 33 that a cutting edge of the lower functional layer end 23 is located within the gap 33, so that this cutting edge can be flowed against and surrounded by sealing material.

It will now be based on the FIGS. 6 to 8 considered a second embodiment of the invention. As far as a component match with the in the FIGS. 1 to 4 1, the same reference numerals will be used and reference may be made to the preceding explanations in connection with the first embodiment.

The second embodiment according to the FIGS. 5 to 8 differs from the first embodiment essentially in that in the transition region between the shaft 13 and insole 15, two seams are used, namely a sewn seam 26, by means of which the sole side ends of the functional layer 19 and the textile layer 21 with the edge of the insole 15, which is for example an insole, are connected. The sewn seam 26 is not or only slightly extensible. For example, this is a strobe seam.

A manufacturing phase after the sewn seam 26 has been formed shows FIG. 5 , A sole-side end region 43 of the upper material 1 7 is folded away from the functional layer 19 and the insole 15 in order to have access to sew the sewn seam 26.

FIG. 6 shows a representation in which the finished up to the stage of manufacture shown shoe has been clamped or eingeleistet on a last 31. A comparison of FIGS. 5 and 6 shows that the suture 26 has yielded only slightly. The presentation of the FIG. 6 is merely of a demonstrative nature. In this stage of manufacture of the shoe, the last 31 is not required per se. Rather, immediately following the in FIG. 5 shown manufacturing stage according to FIG. 7 the sole side end portion 43 of the upper material 1 7 are folded down again, so that it rests against the outside of the functional layer 19. Thereafter, in the same manner as in the first embodiment of FIGS. 1 to 4 creates a loose seam in the form of a loosely sewn and / or stretchable Strobelnaht 25, by means of which the sole-side end of the upper material 17 with the functional layer 19 and the insole 15 is sewn. In the manufacturing stage thus achieved, the shoe is adjusted according to FIG. 8 clamped on a last 31, whereby it comes to an expansion of the Strobelnaht 25, but not the suture 26. This creates the same as it already associated with FIG. 2 has been explained for the first embodiment, between the lower end of the upper 17 and the insole 15, a gap 33 which exposes a functional layer free zone 35. The further steps are then the same as in connection with FIGS. 3 and 4 explained. Through the gap 33, either a sealing material 37 is applied to the functional layer free zone 35 or when injecting a sole that penetrates liquid sole material through the gap 33 through to the functional layer free zone 35 before, so that the functional layer is sealed there.

There are footwear in which the sole-side lower end of the upper 17 terminates at a distance above the insole and this distance is bridged by an impermeable strip of material. In the Figures 9 and 10 are shown for such footwear two embodiments with inventive connecting device.

FIG. 9 shows such an embodiment with a strip of material 45, whose upper end by means of a loosening seam 25 at the lower side of the upper side of the upper material 1 7 and the lower end via a fixed seam 26 with the lower side bottom of the functional layer 19, the textile layer 21 and with the edge of the insole 15 is sewn. The loosening seam 25 is again a seam, in the illustrated embodiment a stitching seam which is loosely sewn and / or sewn with stretchable yarn so that it gives way to tensile load. When the seam 26 is again a seam, in the illustrated embodiment is a Strobelnaht that does not yield or only slightly under tensile load.

FIG. 9 shows a manufacturing stage after both seams 25 and 26 have been made and the shoe has been clamped in the then reached stage of manufacture on a last 31. The sewn seam 26 essentially does not give way, while the loosening seam 25 yields so far due to the tensile force exerted by the wadding that a gap 33 arises between the lower end of the upper material 17 and the upper end of the material strip 45, in the region of which a functional layer free zone 35 is formed , In the same way as related to the FIGS. 3 and 4 sealing material may then pass through the gap 33 to the functional layer free zone 35 to seal it, which again may be pure seal material or sealingly acting sole material.

FIG. 10 shows a fourth embodiment, which in FIG. 9 embodiment shown very much and from the in FIG. 9 only differs in that not only the seam 25a connected to the upper edge of the material strip 45 but also the seam 25b connected to the lower edge of the material strip 45 is formed as a loose seam by being loosely sewn and / or sewn with stretchable yarn , After clamping the shoe in the manufacturing stage shown, both seams 25a and 25b expand to form two gaps 33a and 33b, in the regions of which two functional layer free zones 35a and 35b are formed by application of sealing material or liquid sole material Can be sealed, as related to the FIGS. 3 and 4 has already been explained.

In one embodiment of the invention, the connecting device runs in the embodiments shown in the figures, the Strobelnet 25 and the strobe seams 25, 25a, 25b, 26, to the entire lower shaft circumference. In other embodiments of the invention, the connection means only revolves around part of the circumference of the shaft, while a different technology is used for the remaining part of the lower circumference of the shaft. For example, the connecting device according to the invention is provided only at those points of the shaft circumference, where the shaft circumference has a particularly small radius of curvature, as is the case in particular in the toe and heel area of shoes, especially in children's shoes. As an example of another technology that can be used in the rest of the shaft circumference, the bootie technology is called. A bootie is a sock-like insert which contains a waterproof and water vapor-permeable functional layer and is arranged on the inside of the upper and the sole structure as a lining-like lining. When using the bootie technology, in the case of a shoe, in which a portion of the shaft circumference a connecting device according to the invention is used, only the remaining area of the shaft circumference provided with a boat-like structure.

In the embodiments shown in the figures, the flowability of the strobel seam 25 or the strobe seams 25a, 25b is ensured by the fact that it is sewn loosely or are. As already mentioned, in other embodiments of the invention, the flowability of the seam or seams is achieved in that it is or are sewn with stretchable yarn. Same effects are achieved when using, for example, a loosely stitched or with stretchable yarn stitched lockstitch or zig-zag seam.

Claims (37)

Footwear, comprising: an insole (15); a shaft (13) constructed with an upper (17) having a sole-side upper end portion (27) and a waterproof functional layer (19) disposed on the inner side of the upper (17) having a sole-side functional layer end portion (23); wherein the upper (17) terminates at a predetermined distance above the insole (15) and the distance between the upper material end region (27) and inner sole (15) is bridged by a material strip (45) impermeable to sealing material (37) or liquid sole material (39) ; and a connecting device (25; 25a) connecting the upper material end region (27) to the material strip (45) and allowing such a distance (33; 33a) around at least part of the circumference of the circumference between the upper material end region (27) and the material strip (45) in that the connecting device (25; 25a) can be flowed through by the application of liquid sealing material (37; 39);
wherein the Funktionsschichtendbereich (23) extends to at least in the region of the connecting means (25; 25a) and sealed in the manufacture of the footwear by the connecting means (25; 25a) on the functional layer (19) sealing material (37; 39) watertight is. Footwear according to Claim 1, in which the connecting device (25; 25a) runs around the entire circumference of the shaft. Footwear according to Claim 1, in which the connecting device (25; 25a) only revolves around a part of the circumference of the shaft. Footwear according to one of Claims 1 to 3, having a seam-like or seam-like connecting device (25; 25a). Footwear according to one of Claims 1 to 4, in which the connecting device (25; 25a) is formed by an expandable seam. Footwear according to Claim 5, in which the connecting device (25; 25a) is formed by a loosely sewn seam. Footwear according to claim 5 or 6, wherein the connecting means (25; 25a) is formed by a seam sewn with stretchable yarn. Footwear according to one of claims 5 to 7, wherein the seam is formed by a stitching seam (25; 25a), a stitching seam or a cross seam. Footwear according to one of Claims 1 to 8, having a molded-on gasket layer made of liquid-injected sealing material (39; 25a) penetrated by the connecting device (25; 25a). Footwear according to Claim 9, having a molded-on outsole, the sealing material (39) being formed by liquid outsole material during injection molding. Footwear according to one of claims 1 to 8, wherein the sealing material (37) is formed by plastic. Footwear according to one of claims 1 to 8, wherein the sealing material (37) is formed by adhesive. Footwear according to Claim 12, in which the sealing material (37) is formed by reactive hot melt adhesive applied to the connecting device (25; 25a) in a fully reacted state. Footwear according to one of claims 1 to 13, with a waterproof and water vapor permeable functional layer (19). Footwear according to one of the preceding claims, in which the sole-side functional layer end region (23) is glued to the insole (15). Footwear according to one of the preceding claims, wherein in addition to the connecting device (25; 25a) a substantially non-expandable seam (26) is provided, by means of which the sole-side functional layer end region (23) with the insole (15), but not with the sole side Upper end portion (27) is connected. Footwear according to claim 16, wherein the seam (26) is formed by a stitching seam. Footwear according to one of the preceding claims, in which the material strip (45) is connected to the upper (17) by means of an upper seam (25, 25a) forming the flow-through connecting means (25; 25a) and by means of a lower seam (25b; 26) Functional layer (19) and / or with the insole (15) is connected. Footwear according to Claim 18, in which also the lower seam (25b) forms a flow-through connecting device in the form of a seam which can be widened as a result of loosely sewing or sewing with stretchable yarn. Process for the production of footwear having a shaft (13) with a top material (1 7) having a sole-side upper end region (27) and a watertight functional layer having a sole-side functional layer end region (23) arranged on the inside of the upper (1 7) (19) is constructed, and with an insole (15), with the following process steps: a) the upper material (17) is designed to terminate at a predetermined distance above the insole (15) and the distance between the outer material (17) and inner sole (15) is determined by a material strip impermeable to sealing material (37) or liquid sole material (39) ( 45) bridged; a) the upper material end region (27) is connected to the material strip (45) by means of a connecting device (25; 25a) revolving around at least part of the shaft circumference in such a way that between the upper material end region (27) and the material strip (45) one of liquid permeable distance (33, 33a) can be produced; b) the Funktionsschichtendbereich (23) is designed such that it extends to at least in the region of the connecting means (25; 25a); c) while the upper material end region (27) and the material strip (45) are held apart at a distance (33; 33a, 33b) from each other via the connecting device (25; 25a), a liquid is introduced onto the outer side of the connecting device (25; State, leading to waterproof sealant material (37; 39) applied such that it flows through the liquid-permeable connection means (25; 25a) through the Funktionsschichtendbereich (23). A method according to claim 20, wherein the connecting means (25; 25a) is made circumferentially around the entire circumference of the shaft. A method according to claim 20, wherein the connecting means (25; 25a) is made circulating around only a part of the circumference of the shank. Method according to one of claims 20 to 22, in which the connecting device (25; 25a) is formed as a seam-like or seam-like connecting device (25; 25a). A method according to any one of claims 20 to 23, wherein the connecting means (25; 25a) is formed by an expandable seam. The method of claim 24, wherein said connection means (25; 25a) is formed by a loosely stitched seam. A method according to claim 24, wherein said connecting means (25; 25a) is formed by a seam sewn with stretchable yarn. A method according to any one of claims 24 to 26, wherein the seam is formed by a stitching seam, a stitching, a cross seam or a zig-zag seam. Method according to one of Claims 20 to 27, in which a sealing layer to be sprayed on is formed as sealing material (39) from liquid material which can be injected during injection molding and which can be penetrated by the connecting device (25; 25a). Method according to one of claims 20 to 27, for the production of footwear with a molded-on sole, in which the sealing material (39) is formed by liquid material injected by the injection molding and by the connecting device (25; 25a). Method according to claim 29, for the production of footwear with a molded outsole, in which the sealing material (39) is formed by liquid outsole material during injection molding. Method according to one of claims 20 to 27, wherein a plastic is used as the sealing material (37). A method according to any one of claims 20 to 27, wherein an adhesive is used as the sealing material (37). Method according to one of claims 20 to 32, wherein the sole side Funktionsschichtendbereich (23) with the insole (1 5) is glued. Method according to one of claims 20 to 32, wherein in addition to the connecting device (25; 25a) a substantially non-expandable seam (26) is produced, by means of which the sole-side functional layer end region (23) with the insole (15), but not with the sole side upper end portion (27) is connected. Method according to one of claims 20 to 34, wherein the material strip (45) is connected to the upper material (17) by means of an upper seam (25, 25a) forming the through-flowable connecting device. The method of claim 35, wherein the strip of material (45) is connected to the functional layer (19) by means of a lower seam (25b; 26). A method according to claim 36, wherein the lower seam (25b, 26) is also formed by a flow-through joining means in the form of a seam which can be widened due to loose sewing or sewing with stretchable yarn.

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