all the figures show a greatly schematized sectional view , in each case of part of a not yet completed shoe in a cross section in the forefoot region , for all of the embodiments production phases before the shoe has been stretched onto a last and production phases after the shoe has been stretched onto a last are shown in the figures . the word shoe is used here , although this shoe has not yet been fully completed , since , with the exception of the representation in fig4 , at least the outsole is still missing . if the inner sole shown in the figures is an insole , the outsole will be attached to it , either by adhesively attaching or moulding on an outsole . fig1 to 4 show a first embodiment of the invention , in which a single seam is involved in the joining device . fig3 and 4 of these embodiments show two different variants of this embodiment , in the case of fig3 the sealing of the functional layer being performed by means of a sealing material , while in the case of fig4 the sealing is performed by means of material of a moulded - on sole . fig5 to 10 show three further embodiments of the invention , in which two seams are used in the region of the joining device . in the case of the embodiment of fig7 and 8 , as in the case of all the previous embodiments , the lower end of the outer material is joined to an inner sole by means of one loosely sewn or expandable seam of the two seams . in the case of the embodiments shown in fig9 and 10 , between the two seams there is a strip of material which is fastened by means of one of the two seams to the lower end of the outer material and by means of the other of the two seams to the inner sole . in the case of the embodiment of fig9 , the bottom seam is fixedly sewn and the top seam is loosely sewn or sewn in such a way that it can expand . in the case of the embodiment of fig1 , both seams are loosely or sewn in such a way that they can expand . fig1 to 4 show sectional views of a shoe 11 according to a first embodiment of the invention with an upper 13 and an inner sole 15 , which is for example an insole 15 . the upper 13 comprises an outer material 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 joined to each other at an end 23 of the functional layer on the sole side by means of a stretch seam 24 . in another embodiment ( not shown ) of such a shoe 11 , the functional layer 19 and the textile layer 21 form parts of a functional - layer laminate , it being possible to dispense with the stretch seam 24 . in the embodiment represented , the joining device according to the invention is formed by a loosely sewn strobel seam 25 , which joins an end 27 of the outer material on the sole side to the insole 15 . in the embodiment represented , the end 27 of the outer material on the sole side runs perpendicularly in relation to the insole 15 , while the end 23 of the functional layer on the sole side and a lower end 29 of the textile layer on the sole side are angled away in such a way that they extend parallel to the insole 15 . however , this is not a precondition for the invention . in another embodiment ( not represented ), the end 29 of the textile layer on the sole side and the end 23 of the functional layer extend perpendicularly in relation to the insole 15 . shown in fig1 is a production phase before the upper 13 , closed off by the insole 15 , is stretched over a last 31 . fig2 shows a production phase after the upper 13 has been stretched over the last 31 . a comparison of the two fig1 and 2 shows that the loosely sewn strobel seam 23 is so compliant that , when the upper 13 is stretched over the last 31 , a distance or gap 33 can be produced between the end 27 of the outer material on the sole side and the insole 15 . as a comparison of the two fig1 and 2 also shows , the lower ends 23 and 29 of the functional layer 19 and textile layer 21 are designed in such a way that they allow themselves to be forced down onto the insole 15 when the upper 13 is stretched over the last 31 , so that a functional - layer free zone 35 is produced in the region of the gap 33 on the outer side of the functional layer 19 , in which liquid sealing material 37 can flow against the functional layer 19 through the gap 33 , which leads to sealing of the functional layer 19 in the functional - layer free zone 35 . shown in fig3 and 4 are production phases of this embodiment which follow on from the production phase shown in fig2 and differ from the latter in that sealing material has been applied in the region of the functional - layer free zone 35 . fig3 shows a variation of this embodiment in which sealing material in the form of liquid plastic or adhesive 37 has been applied in the region of the strobel seam 25 , which has been extended and consequently allows liquid to pass through it , with such a viscosity and at such a pressure that the adhesive 37 can flow against the functional - layer free zone 35 and seal it . in one embodiment of the invention , the adhesive 37 is formed by a reactive hot - melt adhesive which leads to waterproofness in the fully reacted state . the sealing material , applied only in the region of the gap 33 in the case of fig3 , may also be a sheet - like sealing material , which is cut out in strip form from a sheet - like adhesive material , and which is placed from the outside onto the gap 33 and brought into a liquid and tacky state by activation energy , for example thermal energy . for better wetting of the functional - layer free zone 35 with the liquefied adhesive , a pressing device , which preferably consists of or is coated with a material which cannot be wetted by the liquid adhesive , may be used in the way already mentioned , in order to ensure that the liquefied adhesive 37 comes into adequately intimate contact with the functional layer 19 . fig4 shows a variation of this embodiment in which the sealing material is formed by sole cement of a moulded - on sole 39 , the sole 39 being a moulded - on outsole or a moulded - on sole which does not itself serve as an outsole but serves as a carrier for an outsole , which is fastened to the sole 39 , for example by cementing on or sewing on . in this case , the sole 39 is formed like a dish and is moulded on with such a high side wall 41 that both the strobel seam 25 and the functional - layer free zone 35 are covered by sole material . the sole material , which is liquid when it is moulded on , is moulded on at such pressure that the liquid sole material flows against at least part of the functional - layer free zone 35 and the latter is consequently sealed in a waterproof manner . in order to obtain sealing of the functional layer 19 in the end region 23 on the sole side , it is neither necessary for the functional - layer free zone 35 to extend over the entire gap 33 nor necessary for the end 23 of the functional layer on the sole side to extend beyond the gap 33 . to achieve adequate sealing of the functional layer 19 , it is adequate for the end 23 of the functional layer to extend into the gap 33 . it is already adequate if the lower end 23 of the functional layer extends into the gap 33 only so far that a cut edge of the lower end 23 of the functional layer is located within the gap 33 , so that sealing material can flow against and around this cut edge . a second embodiment of the invention is now considered on the basis of fig5 to 8 . to the extent that components coincide with the embodiment shown in fig1 to 4 , the same reference numerals are used and reference can be made to the previous explanations in connection with the first embodiment . the second embodiment according to fig5 to 8 differs from the first embodiment essentially in that two seams are used in the transitional region between the upper 13 and the inner sole 15 , that is a fixed seam 26 , by means of which the ends of the functional layer 19 and of the textile layer 21 on the sole side are joined to the border of the inner sole 15 , which is for example an insole . the fixed seam 26 is not expandable , or only insignificantly . it is , for example , a strobel seam . fig5 shows a production phase after the fixed seam 26 has been formed . an end region 43 of the outer material 17 on the sole side has been swung away from the functional layer 19 and the inner sole 15 , to gain access for sewing the fixed seam 26 . fig6 shows a representation in which the shoe completed up to the production stage shown has been stretched onto a last 31 or lasted . a comparison of fig5 and 6 shows that the fixed seam 26 has yielded only insignificantly . the representation of fig6 is merely of a demonstrative nature . in this production stage of the shoe , the last 31 itself is not yet required . rather , directly following the production stage shown in fig5 , according to fig7 , the end region 43 of the outer material 17 on the sole side can be swung down again , so that it bears against the outer side of the functional layer 19 . after that , in the same way as in the case of the first embodiment of fig1 to 4 , a loose seam is created in the form of a loosely sewn and / or expandable strobel seam 25 , by means of which the end of the outer material 17 on the sole side is sewn to the functional layer 19 and the inner sole 15 . in the production stage reached in this way , the shoe according to fig8 is stretched onto a last 31 , causing expansion of the strobel seam 25 , but not of the fixed seam 26 . in just the same way as already explained in connection with fig2 for the first embodiment , this creates a gap 33 between the lower end of the outer material 17 and the inner sole 15 , which exposes a functional - layer free zone 35 . the further steps are then explained in just the same way as in connection with fig3 and 4 . either a sealing material 37 is applied to the functional - layer free zone 35 through the gap 33 or , when a sole is moulded on , liquid sole material penetrates through the gap 33 as far as the functional - layer free zone 35 , so that the functional layer is sealed there . footwear exists in which the lower end of the outer material 17 on the sole side ends at a distance above the inner sole and this distance is bridged by a strip of impermeable material . in fig9 and 10 , two embodiments with a joining device according to the invention are shown for such footwear . fig9 shows such an embodiment with a strip of material 45 , the upper end of which is sewn by means of a loose seam 25 to the lower end of the outer material 17 on the sole side and the lower end of which is sewn by means of a fixed seam 26 to the lower end of the functional layer 19 on the sole side , the textile layer 21 and to the border of the inner sole 15 . the loose seam 25 is again a seam , in the case of the embodiment represented a strobel seam , which is loosely sewn and / or sewn with extensible yarn , so that it yields to tensile loading . the fixed seam 26 is again a seam , which does not yield , or only insignificantly , under tensile loading , and is a strobel seam in the case of this represented embodiment . fig9 shows a production stage after both seams 25 and 26 have been produced and the shoe in the production stage then reached has been stretched onto a last 31 . the fixed seam 26 essentially does not yield , while the loose seam 25 yields on account of the tensile force exerted by the lasting , to the extent that there is a gap 33 created between the lower end of the outer material 17 and the upper end of the strip of material 45 , in the region of which gap a functional - layer free zone 35 is created . in the same way as explained in connection with fig3 and 4 , sealing material can then pass through the gap 33 to the functional - layer free zone 35 , in order to seal the latter , it again being possible for this to be pure sealing material or sole material acting in a sealing manner . fig1 shows a fourth embodiment , which differs very much from the embodiment shown in fig5 and differs from the embodiment shown in fig9 only in that not only the seam 25 a joined to the upper border of the strip of material 45 but also the seam 25 b joined to the lower border of the strip of material 45 is formed as a loose seam , in that it is loosely sewn and / or sewn with extensible yarn . after the lasting of the shoe in the production stage shown , the two seams 25 a and 25 b expand , so that two gaps 33 a and 33 b are created , in the regions of which there are two functional - layer free zones 35 a and 35 b formed , which can be sealed by sealing material being applied or by liquid sole material penetrating , as already explained in connection with fig3 and 4 . in one embodiment of the invention , the joining device , in the embodiments represented in the figures the strobel seam 25 or the strobel seams 25 , 25 a , 25 b , 26 , runs around the entire lower periphery of the upper . in other embodiments of the invention , the joining device runs only around part of the periphery of the upper , while a different technology is used for the remaining part of the lower periphery of the upper . for example , the joining device according to the invention is provided only at those points of the periphery of the upper at which the periphery of the upper has a particularly small radius of curvature , as is the case in particular in the region of the toes and heels of shoes , most particularly in the case of children &# 39 ; s shoes . as an example of another technology which can be used in the remaining region of the periphery of the upper , bootie technology may be mentioned . a bootie is the name given to a sock - like insert which includes a waterproof and water - vapour - permeable functional layer and is arranged as a lining on the inner side of the upper and of the sole construction . when bootie technology is applied in the case of a shoe in which a joining device according to the invention is used in a subregion of the periphery of the upper , only the remaining region of the periphery of the upper is provided with a bootie - like formation . in the embodiments represented in the figures , the strobel seam 25 or the strobel seams 25 a , 25 b are made flow - through by the said seam or seams being loosely sewn . as already mentioned , in other embodiments of the invention flowing through of the seam or seams is accomplished by the said seam or seams being sewn with extensible yarn . the same effects are obtained when using , for example , a lockstitch seam or zigzag seam sewn loosely or with extensible yarn .
a shoe - reinforcement material having a fiber combination with a first fiber component and a second fiber portion having a second fiber component , whereby the first fiber component has a first melting point and a first softening - temperature range lying below it , and a first fiber portion of the second fiber component has a second melting point and a second softening - temperature range lying below it ; the first melting point and the first softening - temperature range are higher than the second melting point and the second softening - temperature range , the second fiber portion of the second fiber component has a higher melting point and a higher softening temperature lying above it than the first fiber portion , and the fiber combination .