EP1124458A1 - Footwear having a lasting fold sealing and a method for the production thereof - Google Patents
Footwear having a lasting fold sealing and a method for the production thereofInfo
- Publication number
- EP1124458A1 EP1124458A1 EP99970888A EP99970888A EP1124458A1 EP 1124458 A1 EP1124458 A1 EP 1124458A1 EP 99970888 A EP99970888 A EP 99970888A EP 99970888 A EP99970888 A EP 99970888A EP 1124458 A1 EP1124458 A1 EP 1124458A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adhesive
- lasting
- insole
- outsole
- reactive hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/12—Special watertight footwear
- A43B7/125—Special watertight footwear provided with a vapour permeable member, e.g. a membrane
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/12—Special watertight footwear
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B9/00—Footwear characterised by the assembling of the individual parts
- A43B9/12—Stuck or cemented footwear
Definitions
- the invention relates to a shoe sealing system and a sealing method for a sealed shoe with a shaft and an insole to which the shaft is connected, and in particular to footwear with a shaft which is twisted on the underside of an insole and which is at least partially covered with a waterproof functional layer made of a film-like material is provided, which is preferably permeable to water vapor, and with an outsole glued to the underside of the lasting fold.
- the invention also relates to a method for producing such a shoe.
- a waterproof layer This is preferably a waterproof, water vapor-permeable functional layer, by means of which water-tightness while maintaining breathability, i.e. Water vapor permeability is achieved.
- the functional layer is often part of a functional layer laminate which, in addition to the functional layer, has at least one textile layer.
- Shoes of this type are either equipped with a functional layer in the form of a so-called bootie, which covers the entire
- the shoe upper is glued to the underside of the insole along an edge region, which is referred to as a lasting fold, and an outsole is applied to the underside of this glued unit.
- This structure has weak points. Weak points are in particular places where the shoe contour has a small radius of curvature and folds of the twisted shaft material occur in the lasting fold, since the lasting adhesive either does not seal the entire transition area between the upper and insole, especially in the area of the lasting folds, or due to bending stresses when using the shoe can become brittle and thus permeable to water.
- the insole is provided with a waterproof insole layer. There may be cases in which the additional step of gluing the insole circumference to the functional layer and the use of a waterproof insole are not desired.
- EP 0 286 853A discloses a method for sealing the lasting fold of a shoe upper provided with a waterproof, water vapor-permeable functional layer, in which an inner edge region of the lasting fold is kept unglued during lasting bonding and, after the lasting process, an injection mold with the lasting fold on the underside of the lasting fold raised sealing lip is attached.
- the sealing lip essentially follows the contour of the insole edge and is opposite to that The outer circumference of the outsole to be applied later is slightly offset towards the center of the insole.
- a sealing material is injected into the space formed between the sealing lip, which surrounds and thus seals the edge region of the shaft provided with the functional layer, which was left unglued during the sticking operation.
- a shoe is made available that can be made waterproof with relatively simple means and little effort.
- the invention is also intended to make footwear manufactured by the lasting method that can be made permanently watertight with as little mechanical effort and as few procedural steps as possible in the lasting area.
- a sealed shoe according to a first aspect of the invention has a shaft and an insole to which the shaft is connected, with reactive polyurethane-based hot melt adhesive being applied and pressed flatly on the underside of the shoe in the area of the insole and the shaft part connected to it.
- the invention there is also provided a method for the production thereof, in which the upper is connected to the insole and is applied to the underside of the shoe in the area of the insole and the upper part of the upper connected to it, reactive hot-melt adhesive based on polyurethane and pressed.
- reactive hot-melt adhesive based on polyurethane is applied and pressed flatly on the underside of the shoe in the area of the insole and the associated shaft part.
- the bottom of the shoe means the underside of the shoe before applying an outsole.
- Reactive hotmelt adhesive is an adhesive that leads to water resistance in the fully reacted state. In a shoe according to the invention, this causes the seal in the area of the sole structure.
- An upper material such as leather, fleece, felt or the like is preferably used as such material. This material is preferably glued flush in the reactive hot-melt adhesive. That means that from the
- the surface of the insole that points towards the insole is essentially flush with the surface of the reactive hot-melt adhesive that points away from the insole. In this way it is achieved that the underside of the shoe (in the sense defined above) has a flat and uniform surface, for example the sticking of a
- the sole part of the upper of the shoe is connected to the insole by lasting adhesive.
- Outsole-pointing underside drawn lasting area of the sole-side shaft part is at a peripheral area of the
- the reactive hot melt adhesive will then be lasting
- the reactive hotmelt adhesive is preferably overlapping over a width of about 1 cm
- Hot melt adhesive is applied to the entire underside of the insole, which is not covered by the lasting fold, and to the mentioned overlap area with the lasting fold.
- the conventional lasting adhesive process can be used without modification for the production of shoes according to the invention.
- To maintain the water resistance in the area of the sole structure only the reactive hot melt adhesive needs to be applied to the underside of the shoe which has not yet been provided with an outsole. The water resistance is therefore achieved with very little additional effort.
- the invention relates to footwear, comprising a) an insole with an insole underside; b) a shaft which is constructed with an upper material and has an end region on the sole side; c) a waterproof upper functional layer which at least partially lines the upper material of the upper on the inside thereof and has an end region on the sole side; d) wherein the shaft has a lasting flap which is glued to the underside of the insole by means of a lasting adhesive and which has a lasting bottom side which is directed from the edge and a lasting edge facing the middle of the insole; and e) an outsole, which is glued to the bottom of the gusset by means of an outsole adhesive; f) wherein a reactive hot-melt adhesive is applied as the lasting adhesive, which leads to watertightness in the fully reacted state.
- the invention further relates to a method for producing footwear, comprising a) an insole with an insole underside; b) a shaft which is constructed with an upper material and has an end region on the sole side; c) a waterproof upper functional layer which at least partially lines the upper material of the upper on the inside thereof and has an end region on the sole side; d) wherein the shaft has a lasting flap with a lasting bottom side; and e) " an outsole; with the following procedural steps: f) first the lasting fold is made with lasting adhesive using the lasting adhesive
- a waterproof reactive hot-melt adhesive is used as the lasting adhesive.
- the desired watertightness in the lasting area is achieved in that a reactive hot-melt adhesive is used as lasting adhesive, which leads to watertightness in the hardened or fully reacted state.
- Whether a shoe is waterproof can e.g. be checked with a centrifuge assembly of the type described in US-A-5,329,807.
- Hot melt adhesive as a lasting adhesive is prevented that water which has reached the lasting area via the water-conducting upper material of the upper reaches the inside of the functional layer which points away from the upper material and thus into the interior of the shoe. This danger is particularly great if the inside of the
- Functional layer is a lining material with high absorbency.
- the reactive hot-melt adhesive used according to the invention as a lasting adhesive reliably and permanently seals the lasting fold including the particularly critical lasting folds even after bending stress when walking with the footwear.
- reactive hot melt adhesive is used both as a lasting adhesive and as an outsole adhesive.
- Such reactive hot-melt adhesive is first applied as a lasting adhesive before the lasting process and after the lasting process such reactive hot-melt adhesive is applied as an outsole adhesive on the underside of the lasting fold-in, in order to thereby glue the outsole firmly.
- the reactive hot melt adhesive serving as lasting adhesive and the reactive hot melt adhesive serving as outsole adhesive applied in such a way that they combine to form an adhesive coating, which enclose or encase the end region on the sole side of both the upper material of the upper and the upper functional layer in a waterproof manner. This leads to an increased sealing function, as will be explained in more detail below.
- the reactive hot-melt adhesive serving as the outsole adhesive can be applied in good time after the application of the reactive hot-melt adhesive serving as the lasting adhesive that the lasting adhesive is still reactive and the
- Outsole adhesive can connect with the lasting adhesive by chemical bonding to form a common, uniform adhesive coating.
- the outsole adhesive can, however, also be applied only at least on its free surface after the lasting adhesive has hardened or after the lasting adhesive has hardened. This creates a mechanical connection between the lasting adhesive and the outsole adhesive that has sufficient mechanical strength and water resistance.
- Reactive hot melt adhesive to be replaced.
- Footwear comprises an insole with an insole underside; a shaft with an upper is built on and has a sole-side end region; a waterproof upper functional layer which at least partially lines the upper material of the upper on the inside thereof and has an end region on the sole side; wherein the shaft has a lasting wedge which is connected to the
- Insole underside is glued. and has a gusset bottom facing away from the bottom of the insole; and an outsole, which is glued to the bottom of the gusset by means of an outsole adhesive; a waterproof reactive hot-melt adhesive is applied as a lasting adhesive.
- the footwear also has a reactive hot-melt adhesive as an outsole adhesive.
- the lasting adhesive and the outsole adhesive work together to form an adhesive coating which surrounds the end region of both the upper material and the shaft functional layer in a watertight manner.
- a method according to the invention for the production of footwear comprises an insole with an insole underside; a shaft constructed with an upper and a sole on the sole
- the lasting fold is glued to the underside of the insole using lasting adhesive.
- the outsole is applied to the outsole using an outsole adhesive
- the bottom of the wedge is glued on.
- a waterproof reactive hot-melt adhesive is used as the lasting adhesive.
- the outsole adhesive is applied while the hot-melt adhesive applied as a lasting adhesive is still reactive, or after it has hardened or reaction.
- the lasting glue and the outsole glue are applied in such a way that they work together to form an adhesive coating which encloses the end region of both the upper material and the shaft functional layer in a watertight manner.
- Sealing material an additional seal gluing between the insole circumference edge and the functional layer, another process step in which the free end of the lasting fold must be edged by means of a sealing material before the lasting process can take place.
- the method according to the invention therefore leads to low production costs for waterproof shoes, which have not been achieved with the known methods.
- Reactive hot-melt adhesives are adhesives that, before they are activated, consist of relatively short molecular chains with an average molecular weight in the range from about 3000 to about 5000 g / mol, are non-adhesive and, if necessary after thermal activation, are brought into a reaction state in which the Crosslink relatively short molecular chains to long molecular chains and harden them in a humid atmosphere. They are adhesive in the reaction or curing period. After curing, they cannot be reactivated. The reaction leads to a three-dimensional cross-linking of the molecular chains, which makes the reactive hot melt adhesive that has reacted watertight and leads to a highly effective seal. The three-dimensional cross-linking leads to a particularly strong protection against the penetration of water into the adhesive. This highly effective seal and protection against the ingress of water are of particular importance in the area of sole construction.
- Polyurethane reactive hot melt adhesives hereinafter referred to as PU reactive hot melt adhesives, are particularly suitable for the purpose according to the invention.
- EP epoxy resin
- Hot melt adhesive is usually caused by moisture, for which air humidity is sufficient. There are blocked PU reactive hot melt adhesives, the crosslinking reaction of which can only begin after activation of the PU reactive hot melt adhesive by means of thermal energy, so that such hot melt adhesive is open, i.e. in surroundings with
- Humidity can be stored.
- non-blocked PU reactive hot melt adhesives in which a crosslinking reaction takes place at room temperature if they are in an environment with atmospheric moisture.
- the latter hot melt adhesives must be kept protected from atmospheric moisture as long as the crosslinking reaction is not yet to take place.
- Both types of PU reactive hot melt adhesives are usually in the form of rigid blocks in the unreacted state. Before applying to the areas to be glued, the hot melt adhesive is heated in order to melt it and thus make it spreadable or coatable. In the case of the use of urine-blocked hot melt adhesive, such heating must take place in the absence of atmospheric moisture. When using blocked Hot melt adhesive is not necessary, but care must be taken to ensure that the heating temperature remains below the unblocking activation temperature.
- Hot melt adhesives are approximately in the range of 70 ° C to 170 ° C.
- unblocked PU reactive hot melt adhesive is used.
- the crosslinking reaction can be accelerated by the application of heat.
- a PU reactive hot melt adhesive is used, as is available under the name IPATHERM S 14/242 from H.P. Fuller in Wells, Austria.
- IPATHERM S 14/242 from H.P. Fuller in Wells, Austria.
- a PU reactive hot melt adhesive is used, which is available under the name Macroplast QR 6202 from Henkel AG, Dusseldorf, Germany.
- Hot melt adhesives are used which are coordinated in terms of their physical and chemical properties in such a way that they work together to form the waterproof adhesive coating, i.e. the outsole adhesive adheres chemically and / or mechanically to the previously applied lasting adhesive in a watertight manner.
- the same reactive hot-melt adhesive can be used for the lasting adhesive and for the outsole adhesive.
- the production of shoes according to the invention is particularly simple and economical Use of reactive hot-melt adhesive which can be activated thermally and brought to the curing reaction by means of moisture, for example water vapor.
- thermoplastic components can be added to the reactive hot melt adhesive, which have a sufficiently short setting time and first of all assume an adhesive function until the reactive hot melt adhesive has hardened to such an extent that it exhibits sufficient adhesive action .
- Thermoplastics are understood to be non-reactive polymers that are added to reactive hot melt adhesives.
- PU reactive hot melt adhesives Polyurethane reactive hot melt adhesives, hereinafter referred to as PU reactive hot melt adhesives, are particularly preferred.
- Suitable thermoplastics that can be added to the PU reactive hot melt adhesive are, for example, thermoplastic polyesters and thermoplastic polyurethanes.
- a shaft functional layer which is not only impermeable to water but also permeable to water vapor is particularly preferred. This enables the production of waterproof shoes that remain breathable despite being waterproof.
- a functional layer is regarded as "watertight", possibly including seams provided on the functional layer, if it guarantees a water inlet pressure of at least 0.13 bar.
- the functional layer material preferably ensures one
- a functional layer is considered to be "water vapor permeable” if it has a water vapor permeability number Ret of less than 150 m 2 - Pa - W '.
- 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 (19/33).
- the water resistance of a shoe or boot can be tested with the aforementioned centrifuge method according to US-A-5 329 807.
- a centrifuge arrangement described there has four pivoting holding baskets for holding footwear. It can be used to test two or four shoes or boots at the same time.
- centrifugal forces which are generated by rapid centrifugation of the footwear are used to find water-leaky points in the footwear. Before centrifuging, water is poured into the interior of the footwear. On the
- Absorbent material such as blotting paper or a paper towel is arranged on the outside of the footwear.
- the centrifugal forces exert a pressure on the water filled in the footwear, which causes water to reach the absorbent material when the footwear is leaking.
- the pressure which the water exerts during centrifugation depends on the effective shoe surface (sole inner surface), which depends on the shoe size, on the mass m of the amount of water filled into the footwear, on the effective centrifuge radius r and on the centrifuge speed U.
- the upper material for the shaft is, for example, leather or textile
- the textile fabrics can, for example, be woven, knitted, crocheted, fleece or felt.
- These textile fabrics can be made from natural fibers, for example from cotton or viscose, from synthetic fibers, for example from polyesters, polyamides, polypropylenes or polyolefins, or from
- Mixtures of at least two such materials can be produced.
- the insole of footwear according to the invention can be made of viscose, fleece, e.g. Polyester fleece, to which melt fibers can be added, leather or glued leather fibers.
- An insole is available under the name Texon Insole from Texon Mockmuhl GmbH in Mockmuhl, Germany.
- a lining material is normally arranged on the inside of the upper material for the shaft. The same is suitable for this
- an outsole is applied to the underside of the shoe.
- This can be made of waterproof material such as Rubber or plastic, for example polyurethane, consist of or of non-waterproof material such as leather in particular.
- the bonding of the reactive hot melt adhesive to the underside of the shoe becomes particularly intimate when the reactive hot melt adhesive is mechanically pressed against the shoe after being applied to the underside of the shoe
- a pressure device for example in the form of a pressure pad, is preferably suitable for this purpose with a pressure-sensitive adhesive that cannot be wetted by the reactive hot-melt adhesive and therefore cannot be wetted with the reactive hot-melt adhesive adhesive, smooth material surface, for example made of non-porous polyterafluoroethylene (also known under the trade name Teflon).
- a pressure pad is preferably used, for example in the form of a rubber cushion or air cushion, the pressure surface of which is covered with a film of the material mentioned, for example non-porous polytetrafluoroethylene, or one arranges between the sole structure provided with the reactive hot melt adhesive and before the pressing operation such a film on the pressure pad.
- Suitable materials for the waterproof, water vapor-permeable functional layer are in particular polyurethane, polypropylene and polyester, including polyether esters and their laminates, as are described in the documents US Pat. No. 4,725,418 and US Pat. No. 4,493,870.
- stretched microporous polytetrafluoroethylene (ePTFE) as described, for example, in the documents US Pat. No. 3,953,566 and US Pat. No. 4, 187,390
- stretched polytetrafluoroethylene which is provided with water vapor-permeable impregnating agents and / or layers, is particularly preferred; see for example US-A-4, 194,041.
- ePTFE stretched microporous polytetrafluoroethylene
- Functional layer is understood to be a functional layer whose average pore size is between 0.2 ⁇ m and 0.3 ⁇ m.
- Pore size can be measured using the Coulter Porometer (brand name), which is available from Coulter Electronics, Inc., Hialeath,
- the Coulter Porometer is a measuring device that provides an automatic measurement of the pore size distributions in porous media, whereby the (in A S T M - S a d d a r d E 1 2 9 8 - 8 9 b e s c h r i e b e n e)
- Liquid displacement method is used.
- the Coulter Porometer determines the pore size distribution of a sample by an increasing air pressure directed at the sample and by Measure the resulting flow.
- This pore size distribution is a measure of the degree of uniformity of the pores in the sample (ie a narrow pore size distribution means that there is a small difference between the smallest pore size and the largest pore size). It is determined by dividing the maximum pore size by the minimum pore size.
- the Coulter Porometer also calculates the pore size for the mean flow. By definition, half of the flow through the porous sample takes place through pores whose pore size is above or below this pore size for medium flow.
- the reactive hot melt adhesive can penetrate into the pores of this functional layer during the adhesive process, which leads to a mechanical anchoring of the reactive hot melt 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 gluing process.
- PU reactive hot melt adhesive in connection with such a functional layer, there is not only a mechanical connection but also a chemical connection between the PU reactive hot melt adhesive and the PU layer on the functional layer. This leads to a particularly intimate bond between the functional layer and the reactive hot-melt adhesive, so that a particularly permanent watertightness is ensured.
- a waterproof outsole and / or a waterproof insole can be used. But if you also in the sole area despite
- an insole and an outsole which at least in some areas consist of water and water vapor permeable material, and ensure the waterproofness that the water-permeable areas of the insole and / or outsole are provided with a waterproof, water-vapor-permeable sole functional layer.
- Insole made of water-permeable material and the outsole is constructed with leather within a circumferential edge made of rubber or plastic, on the side facing the insole a waterproof, water-vapor-permeable sole functional layer is arranged. This extends in the direction of the sole circumference at least to such an extent that it is overlapped by the area of the gusset covered by reactive hot-melt adhesive.
- a shoe according to the invention can be constructed with an upper material shaft and a shaft functional layer lining this on the inside thereof, the latter preferably being part of a laminate which has the functional layer and at least one lining layer pointing towards the inside of the shoe.
- the laminate can also have more than two
- a textile backing can be located on the side of the functional layer remote from the lining layer.
- a lasting wedge is formed for both the upper material shank and the functional layer shank. The lasting sticking of both lasting folds can be done in one
- these two sticking sticking processes and the subsequent outsole sticking process can be carried out in such a time frame that the crosslinking or curing process for the reactive applied for the first lasting stitching process - Hot melt adhesive still little enough has progressed in order to be able to chemically bond sufficiently with the reactive hot-melt adhesive applied as an outsole adhesive in order to jointly form a waterproof adhesive coating for the two lasting folds.
- these different adhesive processes can also be carried out at such a time interval that a subsequent adhesive bond is only carried out after the partial or complete crosslinking reaction of the hot melt adhesive applied during the previous adhesive bond.
- Upper material laminate used which contains a shaft functional layer.
- An upper material shaft constructed in this way then only needs to be lined on the inside with a simple lining material. In this case, the sealing takes place by sheathing the upper material laminate containing the shaft functional layer through the
- a cavity can arise between the insole and the outsole within the lasting edge, which is usually filled with a filling material.
- this filling material can be any of the known customary filling materials. But you can also fill this cavity with reactive hot melt adhesive.
- the reactive adhesive used as lasting adhesive is preferably
- Hot-melt adhesive in paste-like, for example caterpillar-shaped, introduced at an angle which, before sticking, forms between the lower peripheral edge of the insole and the shaft part which is to be pinched and which hangs over the edge of the insole.
- the reactive hot melt adhesive serving as outsole adhesive is preferably sprayed onto the underside of the lasting fold.
- thermoplastic components to the reactive hot melt adhesive, and the resulting adhesive due to the added
- Thermoplastic hot melt adhesive has sufficient and timely provisional adhesiveness, one can also proceed by first applying the adhesive serving as the lasting adhesive, with the provisional adhesive ability temporarily sticking the lasting fold to the insole, then applying the outsole adhesive to the underside of the lasting fold and then the Under the provisional adhesive effect of the thermoplastic adhesive, temporarily glue the outsole to the bottom of the lasting fold.
- Hot melt adhesive the thermal activation preceding the crosslinking reaction can then each be carried out in a common step.
- Thermoplastics are materials that become sticky when heated and harden after subsequent cooling. By reheating them, they can be brought back into an adhesive state.
- FIG. 1 is a bottom view of the first embodiment of a shoe according to the invention without an outsole;
- Fig. 2 is a side view of the sole area of the shoe shown in Fig. 1;
- Fig. 3 is a bottom view of a second embodiment of a shoe according to the invention without an outsole;
- Fig. 4 is a side view of the sole area of the one shown in Fig. 1
- Fig. 5 shows the side view as Fig. 2, but with an additional schematic representation of a pressing device for pressing reactive hot melt adhesive.
- FIG. 6 shows a shoe structure of a third embodiment of the invention after the application of lasting adhesive
- FIG. 8 shows a shoe structure of the type shown in FIG. 6 after pinching
- Fig. 9 shows a shoe structure of the type shown in Fig. 8 after
- Fig. 10 shows a shoe structure of the type shown in Figure 9 after sticking an outsole.
- 11 shows the shoe structure shown in FIG. 5 with illustrations for explaining the water resistance;
- FIG. 13 shows a shoe structure of a fifth embodiment of the invention after the application of lasting adhesive
- FIG. 14 shows the shoe structure shown in FIG. 13 after sticking
- Fig. 16 shows the shoe structure shown in Figure 15 after sticking an outsole.
- 17 shows a schematic, greatly enlarged two-dimensional representation of reactive hot melt adhesive which has been reacted by three-dimensional crosslinking of molecular chains
- the invention has an insole 1, a shaft with a lasting insert 2 connected to the insole 1 by means of lasting adhesive and reactive hot-melt adhesive 3 applied to the underside of insole 1 and lasting insert 2.
- the reactive hot-melt adhesive 3 covers the entire area not covered by the lasting fold 2
- Such a shoe is preferably produced as follows: First, the insole 1 is attached to the underside of a last (not shown). Then it will be. a shaft stretched over the last, the circumferential edge of the insole underside provided with conventional lasting adhesive and the lasting fold 2 pulled onto the underside of the insole and glued to it. Thereafter, the reactive hot-melt adhesive 3 is applied to the undersides of insole 1 and lasting wedge 2 and pressed there in order to obtain an underside of the shoe with a flat and uniform surface.
- FIG. 2 This state of manufacture is shown in FIG. 2 in a side view.
- An outsole (not shown) is then applied to the underside of the shoe provided with the reactive hot-melt adhesive 3, for example by gluing.
- the underside of the shoe or the sole structure is made watertight.
- FIG. 3 shows a shoe which corresponds to the shoe shown in FIGS. 1 and 2 with the " exception that it is provided with an open-pored, adhesive-friendly material 4 on the lower surface facing away from the insole 1 is that is glued flush in the reactive hot-melt adhesive 3. By applying this material 4, the waiting times are reduced and becomes an immediate one
- FIG. 4 A side view corresponding to FIG. 2 of this shoe of the second embodiment is shown in FIG. 4, the flush bonding of the material 4 with the reactive hot melt adhesive 3 being clearly visible.
- the reactive hot melt adhesive 3 is preferably as viscous
- the degree of liquid can be influenced by the strength of the heating of the reactive hot melt adhesive 3.
- FIG. 5 is a very schematic illustration of a pressing device 5 for pressing the reactive hot-melt adhesive 3 onto the undersides of
- a pressure pad of the type already mentioned is particularly suitable for this.
- FIGS. 6 to 8 show such a shoe in a very schematic way in different manufacturing phases.
- the shoe according to this third embodiment has a waterproof insole 11 which is arranged on a last 13.
- the insole 11 is located within a shaft 15, which is constructed with a water-permeable upper material 17, for example leather or textile material.
- the inside of the upper material 17 is lined with a functional layer laminate 19 which has a shaft functional layer 21 and will be explained in more detail in connection with FIG. 2.
- the upper 15 is already pulled over the last 13 and the insole 11, the end region of the upper which later forms the lasting fold still hanging over the underside 23 of the insole.
- An angle is formed between the peripheral edge region of the insole underside 23 and the sole-side end region of the shaft 15, into which a reactive hot-melt adhesive serving as lasting adhesive 25 is introduced.
- this is not necessary for the adhesive bond according to the invention to work. It is only important that the hot melt adhesive is applied in such a way that after the The lasting process is somewhere between the underside 23 of the insole and the twisted part of the functional layer laminate 19 in the form of a continuous adhesive strip in the circumferential direction of the insole.
- This adhesive strip can extend over the entire width of the twisted part of the functional layer laminate 19 or only over any part of the width of this twisted part of the functional layer laminate.
- the lasting glue is preferably applied in such a way that after the lasting process it comes to rest in the region of the lasting fold adjoining the edge of the insole circumference.
- This area is usually free of pinch folds that only appear at a certain distance of, for example, 5 to 10 mm from the edge of the insole circumference, particularly at locations where the shoe contour has a strong curvature.
- the lasting adhesive 25 is preferably applied in paste form, for example with the aid of an adhesive nozzle (not shown) which ejects an adhesive bead.
- the triangular shape of the lasting adhesive 25 is only to be understood schematically in FIG. 6.
- the adhesive bead can have any other cross section.
- Fig. 7 shows a (rotated by 90 °) section of the shaft structure after preparation for the lasting glue.
- the functional layer laminate 19 is located on the inside thereof, in FIG. 2 above it.
- This comprises the shaft functional layer 21 made of ePTFE made of functional layer material.
- On the one facing the upper 17 On the outside of the shaft functional layer 21 there is a textile side 27 in the form of knitted material or knitting material which serves to mechanically protect the shaft functional layer 21.
- the shaft functional layer 21 is provided with a PU layer 29 on the inside lying away from the upper material 17.
- the shaft functional layer 21 with a PU layer 29 can be produced according to the teaching of US Pat. No.
- 5,026,591 (Lord), but is not limited to this.
- This can be, for example, a non-woven textile layer 31, a plastic foam layer, a non-woven layer or a leather layer.
- a non-woven textile layer 31 a plastic foam layer, a non-woven layer or a leather layer.
- Additional layer 31 is a textile finishing layer 33.
- a functional layer laminate 19 of the type shown in FIG. 2 is known per se.
- the additional layer 31 is so thick that it cannot be penetrated by the adhesive or cannot be penetrated sufficiently.
- the additional layer 31 if it consists of a non-woven textile layer or a foam layer, and the textile final layer 33 in that area by a sharpening process which is intended to bond the reactive hotmelt adhesive serving as lasting adhesive 25 to the shaft functional layer 21 or its PU layer 29, if present.
- the additional layer 31 in the form of leather, the
- the sharpening process can be carried out using a sharpening machine known in shoe manufacture, for example using the sharpening machine
- a manufacturing phase is shown in which the lasting fold 35 of the shaft 15 around the last 13 and the
- Insole 11 is twisted around. With that done
- the sticking step is the caterpillar-shaped sticking glue 25 to a flat one
- Lasting adhesive layer 37 has been formed.
- the caterpillar made of lasting adhesive 25 applied in the production phase according to FIG. 1 has been dimensioned such that the lasting adhesive layer 37 extends towards the middle of the insole as far as beyond the inner lasting edge 39.
- the lasting adhesive layer 37 extends towards the middle of the insole as far as beyond the inner lasting edge 39.
- the cut edge 36 and its sharpened end region 41 facing the insole underside 23 are surrounded by lasting adhesive material.
- the shoe structure shown in Fig. 8 is missing to complete only an outsole that can be glued to the insole and the lasting fold from below.
- Insole underside 23 is covered with outsole adhesive 45, as shown in FIG. 5 or in such a way that a central region of the insole underside 23 remains free of outsole adhesive, as shown in FIG. 9.
- the variant shown in FIG. 10 is recommended if an outsole is glued on which is not itself waterproof.
- the variant according to FIG. 9 can be selected if a waterproof outsole is glued on which is itself waterproof. Because then, due to the waterproof adhesive coating 47 on the one hand and the waterproof gluing of the outsole to the adhesive coating 47 on the other hand, water cannot reach this middle
- FIG. 9 This figure also clearly shows that the reactive hot-melt adhesive forming the lasting adhesive layer 37 and the reactive hot-melt adhesive forming the outsole adhesive 45 for the lasting fold 43 form an adhesive coating 47 which acts like a waterproof cover for the lasting fold 43.
- the cavity left free of adhesive within the lasting fold 43 is filled by means of a filler 49 in order to " form an essentially flat underside for the shoe construction produced in this way for gluing on an outsole 51.
- a filler 49 for example, nonwovens, 10
- the glued-on outsole 51 is made of rubber or plastic and is provided with air chambers 53 in the area facing the filler 49.
- Water particles are indicated and the direction of penetration and the direction of creep of water within the water-permeable and water-permeable upper material 17 are indicated by arrows.
- Water penetrating from the outside into the upper material can go down the shaft 15 in the longitudinal direction of the upper material 17 and advance along the lasting wedge to the lasting edge 39.
- Such water is prevented by the waterproof lasting adhesive from migrating into the shoe interior via textile material on the inside of the shaft functional layer 21.
- the sealing adhesive coating 47 As a result of the sealing adhesive coating 47, however, the water can only penetrate to the lasting edge 230, but from there it cannot get further into the interior of the shoe and / or the air chambers 53.
- the fourth embodiment of a shoe according to the invention shown in FIG. 12 has a shoe structure which is largely the same as that of the shoe structure shown in FIG. 10. So far the shoe structure shown in Fig. 12 will not be explained again.
- the shoe construction shown in FIG. 12 differs from the shoe construction shown in FIG. 10 in that it has a water and water vapor permeable insole 57, for example made of a non-woven textile material, for example a fleece, and with a waterproof, water vapor permeable outsole 59 is provided. Because of this sole construction, the shoe shown in FIG. 12 is also waterproof and breathable in the sole area. This leads to a shoe with particularly good wearing comfort.
- the outsole 59 has an outsole edge region 61 made of rubber or plastic, the middle region of which is filled with an outsole insert 63 made of a water and water vapor permeable material, for example leather.
- an outsole insert 63 made of a water and water vapor permeable material, for example leather.
- Sole insert 63 a waterproof, water vapor permeable sole functional layer 65, preferably also made of ePTFE. As indicated schematically in Fig. 12, the sole functional layer 65 extends on its outer edge so far in the direction of the sole circumference that there is an overlap between the
- Adhesive coating 47 and the sole functional layer 65 comes. Therefore, water cannot penetrate to the filler and thus to the insole 57 neither via the lasting fold 35 nor via the outsole insert 63. The interior of the shoe is thus completely protected against the ingress of water while maintaining breathability in the entire area of the shoe.
- the sole functional layer 65 can extend to the outer edge of the outsole.
- the sole functional layer 65 can be constructed with the same materials as the upper functional layer, for example with ePTFE, PU, polypropylene or polyester.
- a fifth embodiment of a shoe according to the invention is shown in FIGS. 13 to 16 in different manufacturing phases.
- an upper material laminate 67 is used which contains both an upper material, for example made of leather or textile, and a shaft functional layer.
- the inside of the upper material laminate 67 is lined with a lining 69 which has no functional layer. Since the lining 69 does not need to be sealed, it is cut back essentially as far as the underside 23 of the insole, as shown in FIG. 13, so that the caterpillar-shaped one
- Lasting adhesive 25 comes to lie at an angle between the underside 23 of the insole and the inside of the upper material laminate 67.
- shoe structure shown in FIG. 13 corresponds to the shoe structure shown in FIG. 6 and is not explained again here.
- FIG. 14 shows the shoe construction of FIG. 13 after the process step of lasting gluing. 15, reactive bottom 43 and insole bottom 23 are then reactively
- the reactive hot-melt adhesive applied as lasting adhesive 25 and the reactive hot-melt adhesive applied as outsole adhesive 45 are again connected to form a waterproof adhesive coating 47 which seals the lasting fold 35.
- a filler 49 is then introduced into the cavity remaining within the lasting margin 39 and an outsole 51 made of rubber or other plastic is glued onto the lasting bottom 43 and the underside of the fountain pen 49.
- the filler 49 can also be formed by running sole material.
- the insole 11 again consists of waterproof material. Similar to the second embodiment shown in FIG. 12, this third embodiment could also be used Embodiment again a water-permeable insole can be combined with a waterproof, breathable outsole.
- 17 shows a schematic, greatly enlarged two-dimensional representation of a section of a sole structure with lasting adhesive 37 in
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29819186U | 1998-10-28 | ||
DE29819186U DE29819186U1 (en) | 1998-10-28 | 1998-10-28 | Shoe sealing system |
DE19853011 | 1998-11-17 | ||
DE19853011 | 1998-11-17 | ||
PCT/EP1999/008190 WO2000024280A1 (en) | 1998-10-28 | 1999-10-28 | Footwear having a lasting fold sealing and a method for the production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1124458A1 true EP1124458A1 (en) | 2001-08-22 |
EP1124458B1 EP1124458B1 (en) | 2004-08-25 |
Family
ID=26050205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99970888A Expired - Lifetime EP1124458B1 (en) | 1998-10-28 | 1999-10-28 | Footwear having a lasting fold sealing and a method for the production thereof |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1124458B1 (en) |
JP (1) | JP2002528152A (en) |
AT (1) | ATE274312T1 (en) |
AU (1) | AU1156500A (en) |
DE (1) | DE59910359D1 (en) |
NO (1) | NO20012081D0 (en) |
WO (1) | WO2000024280A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1195100B1 (en) * | 2000-10-06 | 2003-07-30 | W.L. GORE & ASSOCIATI S.r.l. | Footwear with gasket |
US7117545B2 (en) | 2003-10-15 | 2006-10-10 | Gore Enterprise Holdings Inc. | Liquidproof seam for protective apparel |
EP2375928B1 (en) * | 2008-12-10 | 2018-04-04 | Sympatex Technologies GmbH | Method for manufacturing waterproof, breathable footwear |
WO2014178620A1 (en) * | 2013-04-29 | 2014-11-06 | 주식회사 엘지화학 | Polymer electrolyte membrane, membrane electrode assembly comprising polymer electrolyte membrane and fuel cell comprising membrane electrode assembly |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE213100C (en) * | ||||
CA962021A (en) | 1970-05-21 | 1975-02-04 | Robert W. Gore | Porous products and process therefor |
US4421742A (en) | 1977-02-08 | 1983-12-20 | Dr. Werner Freyberg Chemische Fabrik Delitia Nachf. | Phosphine producing pesticide and method of manufacture therefor |
US4194041A (en) | 1978-06-29 | 1980-03-18 | W. L. Gore & Associates, Inc. | Waterproof laminate |
CA1191439A (en) | 1982-12-02 | 1985-08-06 | Cornelius M.F. Vrouenraets | Flexible layered product |
EP0284638A1 (en) * | 1987-04-02 | 1988-10-05 | KUK Schuhfabrik GmbH | Watertight shoe |
DE3712901C1 (en) * | 1987-04-15 | 1988-08-04 | Gore W L & Co Gmbh | Process for waterproofing shoes in the sole area |
US5026591A (en) | 1987-04-21 | 1991-06-25 | W. L. Gore & Associates, Inc. | Coated products and methods for making |
DE3820094A1 (en) * | 1988-06-13 | 1989-12-14 | Gore W L & Co Gmbh | Watertight inverted-seam sewn footwear |
DE3840087A1 (en) * | 1988-11-28 | 1990-05-31 | Wagner Lowa Schuhfab | SHOE - KEYWORD: PLASTIC BAND |
DE4002667A1 (en) * | 1989-12-06 | 1991-06-13 | Johann Aumann | Water tight breathable footwear - has multiple layer inner lining upper turned over and stuck to welt sole |
DE4000156C2 (en) | 1990-01-04 | 1998-07-30 | Gore W L & Ass Gmbh | Process for manufacturing a waterproof shoe and waterproof shoe |
CA2110498C (en) | 1991-07-12 | 1997-12-09 | Kathleen Ruth Driskill | Waterproof footwear |
DE4311768A1 (en) * | 1993-04-08 | 1994-10-13 | Gore W L & Ass Gmbh | Method of sealing shoes in the sole region |
US5329807A (en) | 1993-06-18 | 1994-07-19 | W. L. Gore & Associates, Inc. | Centrifuge test apparatus for footwear and apparel |
DE4433870A1 (en) * | 1994-09-22 | 1996-03-28 | Media Point Werbe Und Warenver | Production system for water=proof footwear |
DE4436495A1 (en) * | 1994-10-12 | 1996-04-18 | Gore W L & Ass Gmbh | Process for waterproofing shoes in the sole area |
DE19513413C1 (en) * | 1995-04-08 | 1997-03-20 | Akzo Nobel Nv | Waterproof laminate molding and use thereof in shoes |
DE19627030C2 (en) * | 1996-07-04 | 1998-07-23 | Gore W L & Ass Gmbh | Waterproof, water vapor permeable shoe |
EP0862867A3 (en) * | 1997-03-07 | 1999-04-28 | Akzo Nobel N.V. | Watertight shoe with insole and sock |
-
1999
- 1999-10-28 AT AT99970888T patent/ATE274312T1/en active
- 1999-10-28 EP EP99970888A patent/EP1124458B1/en not_active Expired - Lifetime
- 1999-10-28 JP JP2000577905A patent/JP2002528152A/en active Pending
- 1999-10-28 DE DE59910359T patent/DE59910359D1/en not_active Expired - Lifetime
- 1999-10-28 AU AU11565/00A patent/AU1156500A/en not_active Abandoned
- 1999-10-28 WO PCT/EP1999/008190 patent/WO2000024280A1/en active IP Right Grant
-
2001
- 2001-04-27 NO NO20012081A patent/NO20012081D0/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0024280A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59910359D1 (en) | 2004-09-30 |
NO20012081L (en) | 2001-04-27 |
AU1156500A (en) | 2000-05-15 |
NO20012081D0 (en) | 2001-04-27 |
ATE274312T1 (en) | 2004-09-15 |
JP2002528152A (en) | 2002-09-03 |
WO2000024280A1 (en) | 2000-05-04 |
EP1124458B1 (en) | 2004-08-25 |
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