KR20210097168A - How to permanently waterproof footwear - Google Patents

Abstract

A method for waterproofing footwear (2) comprising an upper assembly (4) having an outer structure (6) and a sole (8) comprises a functional layer (54) and at least one fabric layer (56, 58). providing a waterproof breathable bootie (10) having a waterproof breathable laminate structure comprising; inserting the waterproof breathable bootie (10) into the inner space (12) of the outer structure (6) and the sole (8) when the outer structure (6) and the sole (8) are placed in an assembled state; and securing the waterproof breathable bootie (10) in place within the interior space (12) of the outer structure (6) and the sole (8).

Description

How to permanently waterproof footwear

The present invention is the field of manufacturing footwear. In particular, the present invention is in the field of manufacturing waterproof footwear.

In recent years, there has been a trend towards waterproof footwear. Waterproof and breathable shoes have been developed that provide an overall waterproof structure around the wearer's feet, but at the same time provide breathability so that moisture and sweat from the wearer's feet can escape from the interior of the shoe. Although such waterproof and breathable shoes provide a very comfortable feeling for users in a wide range of usage scenarios, the proportion of waterproof footwear among all footwear is still very low.

Accordingly, it would be beneficial to provide a method that allows for a wider range of waterproof and breathable footwear. Additionally, it would be beneficial to provide footwear produced according to such methods.

Exemplary embodiments of the present invention include providing a waterproof, breathable bootie having a waterproof, breathable laminate structure comprising a functional layer and at least one fabric layer; inserting the waterproof breathable bootie through the collar of the footwear into the interior space of the footwear after the interior space of the footwear is closed; and by attaching the waterproof breathable bootie to the footwear in a donning region of the footwear and by attaching the waterproof breathable bootie to the footwear in at least one additional attachment region of the footwear; A method for permanently waterproofing footwear comprising permanently securing the

Exemplary embodiments of the present invention allow constructing footwear with waterproof breathable booties when the footwear is otherwise pre-assembled or nearly fully assembled. In particular, when the footwear has been designed and assembled according to conventional non-waterproof designs and is ready to be worn or nearly ready to be worn, the footwear may still be configured to have a waterproof breathable bootie. In the case of ready-to-wear footwear, it may also be said that the assembled non-waterproof footwear can be easily retrofitted to have a waterproof breathable bootie and thus waterproofed.

According to exemplary embodiments of the present invention, the waterproof breathable bootie is inserted into the interior space of the footwear through the collar of the footwear after the interior space of the footwear is closed. prior to which the waterproof breathable laminate was attached to the other components of the upper assembly prior to any components being placed on the shoe bone and prior to other components of the upper assembly putting them together with the waterproof breathable laminate into their final shape. Compared to the approaches of Compared to previous approaches in which the waterproof breathable laminate was embedded between different components of footwear and the attachment of the waterproof breathable laminate to other footwear components occurred between different manufacturing steps at a relatively early stage of the production process. , Exemplary embodiments of the present invention allow for insertion of a waterproof breathable bootie into the interior space of a footwear at a late stage of the production process. In this way, the waterproofing could be applied to a wide range of footwear. In particular, waterproofing may be applied to non-waterproof footwear with no or only minor changes to previous manufacturing steps. It is possible to produce both a non-waterproof version and a waterproof version of the same shoe model with the same general manufacturing process. The waterproof version may be reached, at the end of the manufacturing process, by performing the method steps of the method for permanently waterproofing footwear according to exemplary embodiments of the present invention. In this way, the manufacturing efficiency may be greatly increased. It is also possible to locally decouple the waterproofing from previous manufacturing steps. For example, a method of permanently waterproofing footwear, as described herein, may be performed at a second facility while previous manufacturing steps are performed at a first facility. A well-defined intermediate product, which may be a fully assembled non-waterproof footwear, may be delivered from a first facility to a second facility, which in turn may aid in quality control at the first facility.

The waterproof breathable bootie is inserted into the interior space of the footwear after the interior space of the footwear is closed. Stated another way, the waterproof breathable bootie is inserted into a bag-like structure that, in use, forms a bag that surrounds the wearer's feet. Stated another way, the waterproof breathable bootie is inserted into the structure surrounding the foot when it already exists as a structure surrounding the foot, ie when an enclosed interior space already exists. In particular, the waterproof breathable bootie may be inserted into the interior space after the structure surrounding the foot has been created around the shoebone and after the shoebone has been pulled out of the structure surrounding the foot. It is understood that a bag-shaped structure of footwear into which a waterproof breathable boot is inserted has a foot insertion opening in the collar of the footwear.

The expression of permanently securing the waterproof breathable bootie in place within the interior space of the footwear means that the waterproof breathable bootie cannot be detached from the footwear in a non-invasive manner. In other words, after being permanently secured to the footwear, the waterproof breathable bootie cannot be separated from the footwear without compromising the fixation between the footwear and/or the waterproof breathable bootie and/or the waterproof breathable bootie and the footwear. In particular, the waterproof breathable bootie is not releasably inserted into the footwear. The means of attachment are not removable fasteners, such as velcro, push buttons, zippers, or the like.

Permanently securing the waterproof breathable bootie in place within the interior space of the footwear includes attaching the waterproof breathable bootie to the footwear in a wear area of the footwear and attaching the waterproof breathable bootie to the footwear in at least one additional attachment area of the footwear. include that In use, the wearer needs to put on (wear) and take off (take off) footwear. The term “wearing zone” refers to that portion of a footwear through which the wearer's toes, midfoot, and heel pass during wear of the footwear. Generally, the wearing region lies below and adjacent to the collar of the footwear. Its scope may depend on the type of footwear, for example a boot may have a wider wearing area than a lower shoe.

The expression of providing a waterproof breathable bootie does not necessarily relate to producing a waterproof breathable bootie. Although the terminology does not preclude the production of waterproof breathable booties, the expression of providing waterproof breathable booties prior to insertion into the interior space of footwear also encompasses the simple insertion of pre-manufactured waterproof breathable booties into the production process. do. In other words, the term of providing a waterproof breathable bootie may relate to using a waterproof breathable bootie to waterproof footwear. In other words, a method for permanently waterproofing footwear according to exemplary embodiments of the present invention may be referred to as waterproofing footwear with the aid of a waterproof breathable bootie.

The waterproof breathable bootie is provided with a waterproof breathable laminate structure. The term “waterproof breathable laminate” relates to the presence of both a functional layer and at least one fabric layer around substantially the entire extent of the waterproof breathable laminate. The waterproof breathable laminate structure may consist of a single laminate or a plurality of laminate pieces, as described below. In addition, the single laminate or the plurality of laminate pieces may each comprise two fabric layers arranged together with one fabric layer or on opposite sides of the functional layer/functional layer pieces of the single stack/plural stack pieces; together, may be provided. Also, the at least one fabric layer may comprise a plurality of fabric layer pieces, which may overlap in adjacent areas. Additionally, when a plurality of laminate pieces having a plurality of functional layer pieces are provided, they may overlap. A seal between the plurality of functional layer pieces may be provided.

The term “bootie” refers to a sock-like structure that wraps around a wearer's foot when inserted into footwear. The bootie is arranged within the interior space of the footwear. The bootie may also extend out of the interior space of the footwear at the collar of the footwear. Stated another way, the bootie may extend upwardly from the outer structure of the upper assembly of the footwear. The bootie has a waterproof, breathable laminate structure. In this way, the bootie provides a waterproof and breathable sock-like structure around the wearer's entire foot. Such waterproof and breathable bootie structures allow for the release of water vapor from the wearer's feet through the bootie and out of the footwear via the upper assembly and/or sole.

The functional layer may include, or may be, at least one breathable and waterproof membrane. The membrane may be selected from polyurethane, polyester, polyether, polyamide, polyacrylate, copolyether ester and copolyether amide, as well as other suitable thermoplastic and elastomeric films. In certain embodiments, the waterproof breathable membrane may consist of a fluoropolymer, in particular microporous expanded polytetrafluoroethylene (ePTFE). Microporous polytetrafluoroethylene membranes are membranes of expanded polytetrafluoroethylene as taught in US Pat. Nos. 3,953,566 and 4,187,390 to Gore. Such membranes of expanded polytetrafluoroethylene are provided as commercially available laminates from W. L. Gore and Associates, Inc., Elkton, Maryland, under the trade designation GORE-TEX® fabric. The breathable and waterproof functional layer is made substantially in accordance with the teachings of U.S. Patent Nos. 4,194,041 and 4,942,214 assigned to WL Gore & Associates, Inc. of Elkton, Md., a polyurethane coated microporous expanded expanded layer. It may consist of a polytetrafluoroethylene membrane.

According to another embodiment, insertion of the waterproof breathable bootie occurs after the interior space is formed by the upper assembly of the footwear. In other words, the waterproof breathable bootie is inserted into a structure surrounding the foot provided by the upper assembly. After being inserted, the waterproof breathable bootie is entirely surrounded by the upper assembly, with the exclusion of an upper portion of the bootie potentially extending upwardly out of the upper assembly. Stated another way, the interior space of the footwear is provided within the upper assembly. The waterproof breathable bootie is attached to the upper assembly, particularly to a wear region of the upper assembly and to at least one additional attachment region of the upper assembly. The waterproof breathable bootie is fitted into an upper assembly of a footwear when the upper assembly is placed in an assembled state, ie, the upper assembly is a structure surrounding an already closed foot. In this manner, waterproof breathable booties may be introduced into footwear production at the point where the upper assembly provides a well-defined structure for waterproofing operations.

When inserted into the interior space defined by the upper assembly, the bootie is arranged below the exterior structure of the upper assembly and toward the inside of the exterior structure of the upper assembly, and above the sole-side portion of the upper assembly. The term “external structure” generally refers to that portion of a footwear that is visible from the outside of the footwear on top of the sole when the footwear is placed in the finished condition. It also includes non-visible extensions of such materials, for example of an upper material that is fitted to the shoe bone. The external structure further comprises additional structures, eg a hidden tongue, over the foot and to the sides of the foot, eg, although not visible from the outside. The term “sole-side portion of an upper assembly” refers to that portion of an upper assembly that is arranged between the foot of a wearer and the sole of the footwear.

According to another embodiment, insertion of the waterproof breathable bootie into the upper assembly occurs after a sole of the footwear is applied to the upper assembly. In other words, insertion of the waterproof breathable bootie into the upper assembly occurs when the upper assembly and the sole are placed in an assembled state. With the exception of the waterproof breathable bootie, the footwear may be placed in a fully assembled state before the method for waterproofing footwear according to exemplary embodiments of the present invention takes place. After the sole of the footwear has been applied to the upper assembly, inserting the waterproof breathable bootie into the upper assembly allows performing the waterproofing step at or at the very end of the manufacturing process. Footwear of the same type could be produced in a waterproof version and in a non-waterproof version with only minimal changes in the production process. In particular, the production of waterproof footwear may differ from the production of non-waterproof footwear only with respect to carrying out a method of permanently waterproofing footwear at the end of the production process, as described herein. The previous steps in the manufacturing process need not be adjusted.

According to an alternative embodiment, insertion of the waterproof breathable bootie occurs prior to the sole of the footwear being applied to the upper assembly. Compared to the embodiments described above, the step of applying the sole may be delayed after the waterproof breathable bootie is inserted into the easily assembled upper assembly. Although waterproofing is not performed at the end of the production process, waterproofing still occurs at a very well defined point in the production process. Both fabrication of the upper assembly prior to insertion of the waterproof breathable bootie and application of the sole after insertion of the waterproof breathable bootie may be performed independently of the method of waterproofing footwear, as described herein. Again, one type of footwear may be produced in a waterproof version and a non-waterproof version without coordinating production steps related to the manufacture of the upper assembly and application of the sole.

The expression that a sole is applied to an upper assembly refers to a connection between an upper assembly and a sole, such as sewing the sole to the upper assembly, adhering the sole to the upper assembly, molding the sole on the upper assembly, particularly injection molding, and the like. It is intended to encompass attachments of any suitable kind.

According to another embodiment, insertion of the waterproof breathable bootie occurs after an interior space is formed jointly by an upper assembly of the footwear and a sole of the footwear. Stated differently, the interior space of the footwear is bounded in part by an upper assembly and in part by a sole of the footwear. Stated another way, for at least a portion of the range of the wearer's sole, there is no portion of the upper assembly between the wearer's foot and the sole. Also for such a footwear structure, waterproofing of the footwear may be achieved at the end or end of the manufacturing process through methods according to exemplary embodiments of the present invention.

The terms “upper assembly” and “sole” generally refer to structures that are manufactured separately or sequentially according to traditional footwear manufacturing. However, with advances in shoe manufacturing, it is also possible for the upper assembly and the sole to be formed as an integrated structure. For example, the combination of the upper assembly and the sole may be manufactured as a 3D knitted fabric or according to another 3D manufacturing process. Such integrated structures, including both the upper assembly and the sole, are also encompassed by footwear as referred to herein.

According to another embodiment, the waterproof breathable bootie is composed of a waterproof breathable laminate structure. In particular, a waterproof breathable bootie may have no support structure, making the bootie an intrinsically stable structure capable of standing upright. A bootie consisting of a waterproof breathable laminate is not an undershoe suitable to be worn without enclosing footwear. Additionally, the waterproof breathable bootie may have no additional layers, in addition to the functional layer and at least one fabric layer. In particular, the waterproof breathable bootie may not have a coating, such as an anti-slip coating. In this way, the waterproof breathable bootie may have a lower complexity design than the undergarments of previous approaches, and thus may be incorporated into footwear more quickly and more flexibly during manufacture of the footwear.

According to another embodiment, attachment of the waterproof breathable bootie to the footwear in a wearing region of the footwear comprises adhering an adhesive tape of the waterproof breathable bootie bootie, arranged in a collar region of the waterproof breathable booty bootie, to the wearing region of the footwear. . In this way, the waterproof breathable bootie may be attached to the surrounding upper assembly at or near the foot insertion portion in a particularly reliable manner. This will in turn allow the foot to slide into the bootie through the well defined opening. Convenient stepping into the footwear may be provided while a reliable attachment between the bootie and the upper assembly may be provided. The adhesive tape is designed to provide an adhesive tape to the collar region of the bootie, such as an inherently separate, separate adhesive tape structure attached to the bootie, an adhesive layer applied/transferred to the bootie, and activatable adhesive yarns knitted into the fabric layer of the laminate structure. It may be any of the adhesive materials incorporated into the boot structure accordingly.

According to another embodiment, the adhesive tape extends along the entire perimeter of the bootie. In this manner, adhesion between the bootie and the upper assembly is provided around the entire perimeter of the foot insert portion. Entry into footwear is particularly convenient for the user.

According to another embodiment, the adhesive tape has a width of between 0.5 cm and 5 cm, in particular between 0.5 cm and 2 cm, more particularly between 0.5 cm and 1 cm.

According to another embodiment, the width of the adhesive tape is from 5% to 50% of the height from the sole portion of the interior space to the collar of the footwear, in particular from 5% to 50% of the height from the sole portion of the interior space to the collar of the footwear. %, more particularly between 10% and 20%.

According to another embodiment, the adhesive tape is at least one of sewn, bonded, welded, sprayed, and printed on a waterproof breathable bootie. The adhesive tape may be a separate structure in nature that is attached to the bootie, in particular to the waterproof breathable laminate structure. The adhesive tape may also be incorporated into the waterproof breathable laminate structure, such as through incorporating an activatable adhesive material therein. Providing a waterproof breathable bootie may refer to providing a waterproof breathable bootie already having an adhesive tape attached thereto or incorporated therein. The step of providing the waterproof breathable bootie includes the steps of sewing and/or bonding and/or welding and/or spraying and/or printing the adhesive tape to the waterproof breathable bootie, also possible. Further, providing the waterproof breathable bootie comprises the steps of cutting the bootie to a desired length and thereafter sewing and/or bonding and/or welding the adhesive tape to the waterproof breathable bootie; It is possible, to include a step of spraying and/or a step of printing. In this way, the same type of bootie may be used as a starting point for waterproofing various footwear models. In particular, the ankle portion of the bootie may be cut to the required length.

According to another embodiment, the adhesive tape includes a heat activated adhesive, and wherein adhering the adhesive tape to the wearing area of the footwear includes heating the adhesive tape. In this way, the attachment of the bootie to the upper assembly may be subject to well defined heating conditions to allow for reproducible, high-quality attachment throughout a production lot. The term "heat activated adhesive" relates to its intrinsic ability to be activated by heat. This does not mean that the adhesive is placed in an activated state. A heat-activated adhesive becomes an activated state by heating an adhesive tape. The heat activated adhesive may be a thermoplastic adhesive, such as a thermoplastic polyurethane. Any other suitable heat activated adhesive is also possible.

According to another embodiment, heating the adhesive tape is performed after inserting the waterproof breathable bootie into the interior space, or before and after inserting the waterproof breathable bootie into the interior space. For example, it is possible that the waterproof breathable booties and adhesive tape, when inserted into the interior space, are brought to substantially room temperature, and then heated. It is also possible for the adhesive tape to be preheated prior to insertion, so that activation of the adhesive tape is carried out particularly quickly after insertion.

According to another embodiment, the adhesive tape comprises at least one of a heat activated adhesive, a pressure activated adhesive, a pressure inducing adhesive, a moisture curing adhesive, and a solvent curing adhesive, and wherein adhering the adhesive tape to a wear area of the footwear comprises: , including activating the adhesive tape.

According to another embodiment, attachment of the waterproof breathable bootie to footwear in a wearing region of the footwear includes sewing the waterproof breathable bootie, in its collar region, to a wearing region of the footwear. In particular, the bootie may be sewn to a wearing area of the footwear along the entire perimeter of the bootie. By sewing the bootie to the upper assembly, a strong, flexible, and reliable attachment may be achieved.

According to another embodiment, attachment of the waterproof breathable bootie to the footwear in the wearing area of the footwear comprises attaching the waterproof breathable bootie to the footwear at a distance of at least 2 cm from a sole portion of the interior space. In this way, the waterproof breathable bootie extends upwardly from the sole portion of the interior space by at least 2 cm, and gives the user a particularly waterproof feeling. It is recognized that the user's leg, when wearing the footwear, extends out of the footwear and that the waterproof property of the footwear does not apply to the foot insertion portion by limitation. Separating the attachment between the bootie and the wearing area of the footwear by at least 2 cm from the sole portion of the interior space ensures that the waterproofness extends upwardly from the sole portion by a significant amount. This significant amount has been found to prevent most or all of the water from entering the footwear in most usage scenarios and to provide a dry, comfortable feel to the user. A separation of at least 2 cm from the sole portion of the interior space ensures that waterproofness is provided close to, up to, or even beyond the user's ankle, thereby achieving a high level of waterproofing. .

According to another embodiment, attachment of the waterproof breathable bootie to the footwear in at least one additional attachment region of the footwear comprises attaching the waterproof breathable bootie to the footwear in at least one of a toe region of the footwear and a heel region of the footwear. . In particular, attachment of the waterproof breathable bootie to the footwear in the at least one additional attachment region of the footwear may include attaching the waterproof breathable bootie to the footwear in a toe region of the footwear and a heel region of the footwear.

According to another embodiment, attaching the waterproof breathable bootie to the footwear in at least one additional attachment region of the footwear comprises adhering the waterproof breathable bootie to the footwear in at least one of a toe region of the footwear and a heel region of the footwear. . In particular, attachment of the waterproof breathable bootie to the footwear in at least one additional attachment region of the footwear may include adhering the waterproof breathable bootie to the footwear in a toe region of the footwear and a heel region of the footwear.

According to another embodiment, attachment of the waterproof breathable bootie to the footwear in the at least one additional attachment region of the footwear comprises: the waterproof breathable bootie strap to the footwear in at least one of a toe region of the footwear, a heel region of the footwear, and a sole region of the footwear. attaching, in particular gluing. In particular, the attachment of the waterproof breathable bootie to the footwear in the at least one additional attachment region of the footwear is performed in one of the toe region of the footwear, the heel region of the footwear, and the sole region of the footwear, or the toe region of the footwear, the heel region of the footwear. attaching, in particular adhering, a waterproof breathable bootie to the footwear in any two of the zones, and the sole zone of the footwear, or in both the toe zone of the footwear, the heel zone of the footwear, and the sole zone of the footwear will be.

According to another embodiment, a waterproof breathable bootie comprises at least one of a bootie-side adhesive patch in the toe region of the waterproof breathable bootie and a bootie-side adhesive patch in the heel region of the waterproof breathable bootie, and at least one additional attachment region. adhering the waterproof breathable bootie to the footwear includes bonding to the footwear at least one of a bootie-side adhesive patch in the toe region and a bootie-side adhesive patch in the heel region. In this way, the bootie may achieve a secure connection to the remainder of the footwear in one or both of the toe region and heel region. As these zones are important for a firm posture of the user due to their positions at the front and end of the footwear, attachment in these zones may allow for high comfort and stability to the user. Also, attaching the bootie in both the toe zone and the heel zone keeps the bootie in an unfolded position within the interior space, allowing for a particularly easy and comfortable entry of the user's foot. The bootie-side adhesive patch in the toe region and the bootie-side adhesive patch in the heel region may be separate adhesive sheet portions, applied to the bootie. It is also possible that an adhesive, such as a low tack adhesive or a flowable adhesive, is applied to the bootie in the required patches, for example via a brush. The adhesive patch(s) may have, within the collar region of the bootie, any of the adhesives described above for adhesive tape.

According to another embodiment, permanently securing the waterproof breathable bootie in place within the interior space of the footwear includes leaving the waterproof breathable bootie unattached to the midfoot portion of the footwear. This midfoot portion may extend along at least 50% of the range from the tip of the waterproof breathable bootie to the rear of the waterproof breathable bootie, particularly along at least 60%. Additionally, the midfoot portion rests between the toe portion and the heel portion of the waterproof breathable bootie. Leaving the waterproof breathable bootie unattached to the enclosing structure at the midfoot portion of the footwear provides a particularly large amount of flexibility and a high level of wear comfort for the user's foot. The waterproof breathable bootie may not be attached on the upper assembly side of the midfoot portion of the bootie, or on both the upper assembly side and the sole side of the bootie.

According to another embodiment, at least one of the bootie-side adhesive patch in the toe region and the bootie-side adhesive patch in the heel region comprises a heat activated adhesive, and adheres the waterproof breathable bootie to the footwear in the at least one additional attachment region. The step includes heating at least one of the bootie-side adhesive patch in the toe region and the bootie-side adhesive patch in the heel region. Similar considerations, as described above with respect to adhesive tape in the collar region comprising a heat activated adhesive, include a bootie-side adhesive patch in the toe region and/or a bootie-side adhesive patch in the heel region, comprising a heat activated adhesive. applies to As stated above, the adhesive patch(s) may also have, within the collar region of the bootie, any of the other adhesives mentioned above for adhesive tape.

According to another embodiment, the waterproof breathable bootie includes at least one additional boot-side adhesive patch outside the toe region and the heel region of the waterproof breathable bootie. By providing one or more additional bootie-side adhesive patch(s), the required level of fixation of the bootie along the footwear may be achieved. In particular, the required trade-off between stability, flexibility, and comfort for the user may be achieved.

According to another embodiment, permanently securing the waterproof breathable bootie within the interior space of the footwear includes adhering the waterproof breathable bootie to the footwear substantially along its entire outer surface. The waterproof breathable bootie may include an adhesive substantially along its entire outer surface. In this way, a very strong integration of the waterproof breathable bootie into the footwear may be achieved. A waterproof breathable bootie may be a very essential part of footwear, and the strength and durability of the attachment between the waterproof breathable bootie and the upper assembly/sole may be very high. To keep the footwear highly breathable, the adhesive may be applied in an adhesive pattern, such as a grid pattern or dot pattern. It is also possible that the adhesive is essentially a breathable adhesive.

According to another embodiment, adhering the waterproof breathable bootie to the footwear in the at least one additional attachment region comprises at least one of a footwear-side adhesive patch in a toe region of the interior space and a footwear-side adhesive patch in a heel region of the interior space. to apply; and adhering the waterproof breathable bootie to the footwear via at least one of the footwear-side adhesive patch in the toe region of the interior space and the footwear-side adhesive patch in the heel region of the interior space. Applying at least one of a footwear-side adhesive patch in the toe region of the interior space and a footwear-side adhesive patch in the heel region of the interior space is an alternative to the bootie-side adhesive patch(s) described above. Depending on the adhesive used, the material of the bootie, the sole and upper assembly, and the accessibility of the toe and heel regions, it may be desirable to provide an adhesive on the bootie or on the footwear. In particular, depending on the specifics of the footwear in question, one of the alternatives may provide a better attachment between the bootie and the rest of the footwear. It is mentioned that it is also possible to combine one or more bootie-side adhesive patches with one or more footwear-side adhesive patches.

According to another embodiment, at least one of the footwear-side adhesive patch in the toe region and the footwear-side adhesive patch in the heel region comprises a heat activated adhesive, and adheres the waterproof breathable bootie to the footwear in the at least one additional attachment region. The step includes heating at least one of the bootie-side adhesive patch in the toe region and the bootie-side adhesive patch in the heel region. Similar considerations, as described above with respect to adhesive tape in the collar region comprising a heat activated adhesive, include a footwear-side adhesive patch in the toe region and/or a footwear-side adhesive patch in the heel region that includes a heat activated adhesive. applies to Again, the adhesive patch(s) may also have, within the collar region of the bootie, any of the other adhesives mentioned above for adhesive tape.

In addition, it is possible for at least one additional footwear-side adhesive patch outside the heel region and the toe region of the interior space to be provided. It is also possible to provide an adhesive along substantially the entire interior space. Similar considerations apply to providing an additional adhesive on the footwear-side, as described above with respect to providing an adhesive on a waterproof breathable bootie.

According to another embodiment, inserting the waterproof breathable bootie into the interior space includes arranging the waterproof breathable bootie on the shoebone and inserting the shoebone together with the waterproof breathable bootie into the interior space. The use of a shoe bone to insert a waterproof breathable bootie into the interior space is an effective means for highly accurate positioning of the bootie. The bootie may be shaped, on the bone of the shoe, to correspond well to the interior space of the footwear. Also, the shoe bone may be able to set the footwear under some tension to allow the bootie to rest against the footwear, thus with no or only minor wrinkles. This, in turn, may allow achieving a particularly good attachment between the bootie and the footwear. The term “last” may refer to any suitable instrument that partially or fully contours the inner surface of a shoe. The coccyx may be a traditional wooden coccyx, or may be any suitable foot-shaped or partially foot-shaped 3D structure of any suitable material. The shoe bone may also be a balloon/pocket.

According to another embodiment, the shoe bone is inflatable and the step of permanently securing the waterproof breathable bootie belt in place within the interior space includes inflating the shoe bone within the interior space. In this way, easy insertion of the shoe bone may be combined with an effective means of applying pressure on the bootie and footwear through inflation when in its uninflated state it has a smaller space envelope. Also, when an adhesive that is already tacky is used, when applied to a bootie or footwear along the interior space, the inflatable shoe bone can reduce the interior space, with a low risk for the adhesive to stick in the wrong place. Helps to steer the booties accordingly.

According to another embodiment, the oral bone includes at least two oral bone portions, and the step of expanding the oral bone within the interior space includes spacing the at least two oral bone portions. The term “spaced apart” refers to both creating a space between at least two acetabulum portions and increasing an existing space between at least two acetabulum portions. In particular, spacing the at least two oral bone segments apart still entails relatively little complexity while ensuring the application of pressure in the required positions, for example in the toe area and in the heel area. may be allowed to expand.

According to another embodiment, the shoe bone is heatable and the step of permanently securing the waterproof breathable bootie belt in place within the interior space comprises heating the shoe bone when inserted into the interior space. In this way, the shoe bone performs the functions of the drumstick, namely to assist in the insertion of the bootie, to apply pressure on the bootie against the footwear, and to activate the heat activated adhesive. In this way, the oral bone may serve as a multi-function tool to help quickly and reliably perform method steps of a method according to exemplary embodiments of the present invention.

In addition, it is possible for two or more different oral bones to be used sequentially. For example, a bootie may be arranged on the first shoe bone for insertion into the interior space and for securing the bootie in place at one or more first positions. The first coccyx may be retracted, and the second coccyx may be inserted to secure the bootie in place at one or more second positions. The first oral bone and the second oral bone may each have any of the attributes of the oral bone, as described above. Additionally, each of the first and second acetabulum may be used with one or more of the counter-pressure devices, as described herein below.

According to another embodiment, permanently securing the waterproof breathable bootie in place within the interior space includes applying pressure to the shoebone from an exterior of an upper assembly of the footwear and/or from an exterior of a sole of the footwear. In this way, counter pressure towards the shoe bone may be applied from the outside, and the footwear and bootie may be placed in a press of some sort. In this way, a better adhesion between the bootie and the footwear may be achieved than would be the case where the footwear absorbs the pressure from the shoe bone. Also, in this way, less strain may be imposed on the footwear.

According to another embodiment, applying pressure to the shoe bone from outside of the upper assembly and/or from outside the sole comprises applying pressure to the instep portion of the upper assembly via an instep pressurizer; applying pressure around the heel portion of the upper assembly via a forked heel pressurizer; applying pressure to the sole through the sole pressure plate; at least one of applying pressure around the sole and substantially the entire upper assembly through the footwear and the bag around the shoebone. In the latter case, the bag may be pressurized with air from the outside, or may be evacuated to apply pressure on the footwear. The instep pressurizer, the forked heel pressurizer, and the sole pressure plate may therefore allow for localized pressure on the shoebone to provide fixation between the bootie and the footwear in a more targeted manner. In this way, a particularly high fixing accuracy may be achieved. Pressurizing or evacuating a bag arranged around the footwear allows the outside air pressure and the bag to exert a well-distributed pressure on the entire sides of the footwear. Simultaneous application of pressure on different parts of the footwear may allow for a particularly rapid and even fixation of the bootie within the interior space of the footwear.

According to another embodiment, the waterproof breathable bootie is at least partially elastic. Providing a waterproof breathable bootie that is at least partially elastic may help position the bootie relative to the footwear in a particularly accurate manner. For example, a shoe bone may be easily inserted into a bootie due to the elasticity of the bootie. Elasticity may also be beneficial for the user's comfort, as the bootie may adapt to the shape of the user's foot.

According to another embodiment, the waterproof breathable bootie is elastic at least in the midfoot portion thereof. In certain embodiments, the waterproof breathable bootie is elastic at least in the midfoot portion extending along at least 50% of the length from the tip of the waterproof breathable bootie to the trailing end of the waterproof breathable bootie. The term "tip and rear end of a waterproof breathable bootie" refers to the frontmost and rearmost portions of the boot when secured in place within footwear. The elasticity in the midfoot portion allows for particularly good stability and comfort to the user in the midfoot portion. The user's foot has the freedom to move within the midfoot portion of the footwear, while the feeling of compression towards the foot delivers stability.

According to another embodiment, the waterproof breathable bootie is elastic, at least in its upper part, in particular at least in its upper part, extending along at least 40% of the circumference of the waterproof breathable bootie, in particular along at least 50%. . The elasticity in the upper part, especially in the instep part of the foot, may improve the comfort for the user to an even higher degree.

According to another embodiment, the waterproof breathable bootie is elastic in the circumferential direction and/or the longitudinal direction of the waterproof breathable bootie. The waterproof breathable bootie may be elastic in both the circumferential and longitudinal directions of the waterproof breathable bootie. This setup may also be referred to as biaxial stability.

As stated above, the waterproof breathable bootie may be elastic in a circumferential direction. In other words, when the wearer inserts the foot into the footwear, the bootie is capable of elastically expanding and stretching to make room for the wearer's foot. In this process, the bootie conforms to the wearer's foot, which is therefore also referred to as a conformable bootie. By being elastic, it means that the wearer's foot exerts a force against the wearer's foot upon insertion. In other words, elasticity builds up a force that forces the bootie into its shape prior to insertion of the wearer's foot. This force provides for the restoration of the bootie to its former shape after insertion of the wearer's foot. The elastic properties of the bootie may be achieved in any suitable manner. Specific examples of producing elastic laminates are given in WO 95/32093 A1, the contents of which are incorporated herein by reference in their entirety.

The statement that a bootie is elastic in the circumferential direction does not require that the bootie be elastic in the circumferential direction along its entire length. The bootie may be elastic along a substantial portion of its length. In particular, the bootie may be elastic in a circumferential direction within the midfoot portion. However, it is also possible for the bootie to be elastic in the circumferential direction along its entire length.

According to another embodiment, the waterproof breathable bootie has a circumferential elasticity of at most 15 N/cm, in particular at most 5 N/cm, at 30% elongation in the circumferential direction of the bootie. Elongation in the circumferential direction is defined in terms of the bootie sample, eg of the bootie material when the bootie is cut open. In other words, stretch values are not limited to a bootie when inserted into the footwear described herein, as its stretching in the circumferential direction requires stretching two layers of the bootie at the same time. It has been found that a given elastic value provides a very comfortable compromise between circumferential pressure on the foot, delivering stability and a comfortable fit, while maintaining the elastic pressure at a value that is not perceived as unstable. In particular, the bootie may have a circumferential elasticity of at least 0.5 N/cm at 30% elongation in the circumferential direction of the bootie. In this way, a comfortable minimum back pressure on the wearer's foot may be achieved. The elasticity of the bootie may be adjusted, for example, by using fabrics for at least one fabric layer with the required retractive force.

As stated above, the waterproof breathable bootie may be elastic in the longitudinal direction. According to a particular embodiment, at 10% elongation in the longitudinal direction of the bootie, it has a longitudinal elasticity of at most 15 N/cm, in particular at most 5 N/cm. Elasticity is measured as the force required to hold the sample at 10% elongation, with the cm value representing the width of the test sample in the boot. Elasticity is measured according to DIN EN 14704-1, version of July 2005. The values given have been found to provide a bootie with a particularly comfortable fit to apply some force on the foot for a stable and comfortable fit, while preventing the feeling of being pressed on the foot due to too much force. In a specific embodiment, the bootie belt has a longitudinal elasticity of at least 0.5 N/cm at 10% elongation in the longitudinal direction of the bootie belt. In this way, a minimal amount of pressure for stability and a comfortable fit may be achieved. The elasticity of the bootie may be adjusted, for example, by using fabrics for at least one fabric layer with the required retractive force.

According to another embodiment, the waterproof breathable laminate structure includes a one-piece functional layer and at least one fabric layer. The integral functional layer and the at least one textile layer may extend substantially equally. The term "at least one fabric layer" means that an integral functional layer may be provided with a fabric layer on one side of itself, or with a fabric layer on each side of itself, i.e. with two fabric layers. , is intended to state It is also possible for more than one fabric layer to be provided on one side or on both sides. Additionally, each fabric layer may consist of a plurality of fabric strips. For example, a waterproof breathable laminate may include an integral functional layer and one fabric layer on one side of the functional layer, wherein one fabric layer consists of a plurality of fabric pieces sewn together. In other words, the integral functional layer may be provided with one or more layers of fabric, which are essentially made of separate fabric pieces.

As stated above, the functional layer may be a unitary structure. A waterproof, breathable laminate is also considered a one-piece structure. This is irrespective of whether the fabric layer is originally composed of separate fabric pieces or not. In the case where the fabric layer is essentially composed of separate fabric pieces, the integral laminate structure is present at least at the point where the laminate is formed of the integral functional layer and the plurality of fabric pieces. Thus, the bootie consists of one continuous waterproof, breathable laminate, and is also considered a unitary structure. In particular, the bootie consists of a continuous waterproof, breathable laminate that can be molded to uniquely take the shape of the bootie, or that can be cut, folded, and sewn or bonded together to form a bootie.

An exemplary construction method for a bootie according to the preceding case is as follows. The fabric layer may be formed of a plurality of fabric pieces. The plurality of fabric pieces may be sized and sewn together in such a way that a sock-like fabric layer is formed. A sock-like fabric layer may be disposed on the shoe bone, and the functional layer may be stretched over the shoe bone and placed in contact with the sock-like fabric layer. The functional layer is adhered to the fabric layer, and the waterproof, breathable laminate is thus formed. This waterproof and breathable laminated structure has the unique shape of a bootie. Both the waterproof breathable laminate and the bootie are considered seamless. The seams between the originally separate pieces of fabric, if any, are considered to be seams of the precursor product, and not seams of the bootie laminate. It is also possible that at least one of the at least one fabric layer is also seamless.

In an alternative to a laminated structure that is cut, folded and sewn/bonded to form a bootie, for example having an integral functional layer and a fabric layer on one side, potentially essentially consisting of separate fabric pieces. A substantially planar waterproof breathable laminate is provided. The laminate is cut into such a shape that, when the laminate is folded, a sock-like shape is formed. The edges of the stack are then sewn or bonded together so that the sock-like shape is maintained.

The waterproof breathable laminate may consist of a two-layer laminate consisting of a functional layer and a fabric layer. The waterproof breathable laminate may also consist of a three-layer laminate, wherein the functional layer is sandwiched between a first fabric layer and a second fabric layer on either side of the functional layer. The waterproof breathable laminate may also include one or more additional layers, such as an additional water-barrier layer, that block water outside the functional layer and thus ensure breathability of the functional layer. The term “functional layer” is a term commonly used in the field of footwear and refers to a layer that combines waterproof and breathable properties. Alternatively, the functional layer is also sometimes referred to as a waterproof breathable membrane.

According to another embodiment, the integrated functional layer is a seamless integrated functional layer. As described above, as the functional layer is a seamless integral functional layer, the bootie is also considered a seamless integral bootie regardless of the number of fabric pieces used to form the waterproof breathable laminate. In particular, the functional layer may be uniquely molded into the form of a bootie, for example by expanding the functional layer over the shoe bone and fabric layer so that it is thus seamless. In other words, the functional layer/laminate structure may be manufactured to have the shape of a bootie, ie to have a sock-like shape, without the need to attach different parts of the functional layer/laminate to each other. In particular, there is no need to sew or bond the edges of the functional layer/laminate together in this case. Such bootie-shaped waterproof and breathable functional layer structures are known per se, for example from WO 2015/123482 A1, the content of which is hereby incorporated in its entirety. In particular, it is known how a functional layer can be transformed from a planar layer into a bootie-shaped structure. For details of the manufacturing process, reference is made to WO 2015/123482 A1. The provision of a seamless one-piece functional layer and thus a seamless one-piece bootie provides a particularly high level of comfort to the wearer, as the seam does not interfere with the overall feel of versatile stability, conformity and freedom of movement.

According to an alternative embodiment, the waterproof breathable laminate structure comprises a plurality of waterproof breathable laminate pieces, each of the plurality of waterproof breathable laminate pieces comprising a functional layer piece and at least one fabric layer piece. The plurality of waterproof breathable laminate pieces may be joined together in a waterproof manner. For example, a plurality of pieces of waterproof breathable laminate can be sewn together and a waterproof seam tape is provided for the entire waterproof structure.

According to another embodiment, the plurality of waterproof breathable laminate pieces includes an upper waterproof breathable laminate arranged in an upper portion of the interior space, and a lower waterproof breathable laminate arranged in a lower portion of the interior space. The upper portion and the lower portion may correspond substantially to portions of the bootie above and below the foot. It is also possible for the connecting line between the upper waterproof breathable laminate and the lower waterproof breathable laminate to lie over or under some of the side portions of the user's foot.

According to another alternative embodiment, the waterproof breathable laminate structure includes a plurality of functional layer pieces and at least one fabric layer. In particular, waterproof breathable laminate structures may include a plurality of functional layer pieces joined together, for example by bonding or by welding, and the resulting composite functional layer comprises an inner sock-shaped fabric layer and/or or with an outer sock-shaped fabric layer.

According to another embodiment, an upper assembly includes an upper material, and wherein the upper assembly comprises a mono tongue, a tongue piece attached to the upper material, wherein a portion of the upper material forms a tongue of the footwear. and a gusset-type tongue, wherein the tongue piece is attached to the upper material through an intermittent bridge piece. In other words, the method of waterproofing according to exemplary embodiments of the present invention is applicable to all the tongue structures. In this way, a wide variety of footwear structures may be waterproofed after manufacturing, as described herein.

According to another embodiment, permanently securing the waterproof breathable bootie in place within the interior space comprises attaching the waterproof breathable bootie to one of the integral tongue, the separate tongue, and the gusset-type tongue.

Exemplary embodiments of the present invention provide a method for producing waterproof footwear, comprising the steps of: providing footwear comprising an upper assembly and a sole; and a method for producing waterproof footwear, comprising the steps of a method of permanently waterproofing. Providing the footwear may include manufacturing the footwear. Manufacturing the footwear may include attaching the upper assembly and the sole to each other. The additional features, modifications and beneficial effects described with respect to the method for permanently waterproofing footwear apply in a similar manner to the method for producing waterproof footwear.

Exemplary embodiments of the present invention further include footwear produced according to a method for permanently waterproofing footwear as described in any of the embodiments given above. The additional features, modifications and beneficial effects described with respect to the method for permanently waterproofing footwear apply in a similar manner to footwear.

Further exemplary embodiments of the present invention are described below with reference to the accompanying drawings:
1 illustrates an exemplary embodiment of providing a waterproof breathable bootie, such as may be used in a method for waterproofing footwear in accordance with exemplary embodiments of the present invention, by depicting various process steps in a schematic manner; exemplify;
2 illustrates a method for waterproofing footwear according to an exemplary embodiment of the present invention, by depicting various process steps in a schematic manner;
3 illustrates a method for waterproofing footwear according to another exemplary embodiment of the present invention, by depicting various process steps in a schematic manner;
4 illustrates, in a schematic longitudinal cross-sectional view, footwear according to various exemplary embodiments of the present disclosure, waterproofed by a method for waterproofing footwear according to exemplary embodiments of the present disclosure;
5 illustrates, in a schematic cross-sectional view, footwear according to various exemplary embodiments of the present invention, waterproofed by a method for waterproofing footwear according to exemplary embodiments of the present invention;
6 illustrates, in a schematic manner, various tongue structures, such as may be present in footwear according to exemplary embodiments of the present invention;
7 depicts exemplary embodiments of waterproof breathable laminates for use in waterproof breathable booties for a method for waterproofing footwear in accordance with exemplary embodiments of the present invention.

1 illustrates an exemplary embodiment providing a waterproof breathable bootie 10 that may be used for a method for permanently waterproofing footwear in accordance with exemplary embodiments of the present invention. 1A shows a bootie trimming tool 80 in a schematic side view. The bootie trimming tool 80 is generally sock-shaped. It has trim marks 82 , indicating the required length of the boot for the footwear model in question.

FIG. 1B shows a schematic side view of the bootie trimming tool 80 of FIG. 1A together with the waterproof breathable bootie 10 . The waterproof breathable bootie 10 has been slid over the bootie trimming tool 80 and is shown arranged on the bootie trimming tool 80 . In other words, the bootie trimming tool 80 is arranged inside the waterproof breathable bootie 10 of FIG. 1B . The waterproof breathable bootie 10 has a waterproof breathable laminate structure comprising a functional layer and at least one fabric layer. In the exemplary embodiment of FIG. 1 , the waterproof breathable laminate includes a seamless integral functional layer, as detailed above, and a fabric layer, attached to one side of the seamless integral functional layer. It is noted that any other suitable type of waterproof breathable bootie may also be used.

With the aid of the trim marks 82 of the bootie trimming tool 80 , a trim line 86 is provided on the waterproof breathable bootie 10 . The trim lines 86 may be drawn or embossed on the waterproof breathable bootie 10, or may be provided in any other suitable manner.

1C depicts the waterproof breathable bootie 10 without the bootie trimming tool 80 and illustrates the cutting of the waterproof breathable bootie 10 along the trim line 86 through a stylized pair of scissors 88 . In the exemplary embodiment of FIG. 1 , the waterproof breathable bootie 10 is inherently too long for the footwear model in question, ie the leg portions of the waterproof breathable bootie 10 extend too far upwards. Using such a waterproof breathable bootie 10 may be beneficial from a manufacturing efficiency standpoint, as one type of waterproof breathable bootie 10 may be used for different footwear models. For example, as depicted in FIG. 1B , a waterproof breathable bootie 10 could be used for both low ankle shoes and boots, depending on the trimming. The waterproof breathable bootie 10 may be used for one shoe size, but for different shoe models. It is also possible for the waterproof breathable bootie to have sufficient elasticity to be used for a variety of shoe sizes, such as the nominal shoe size and one or two orders of magnitude larger.

1D illustrates the sewing of adhesive tape 14 to waterproof breathable bootie 10. The adhesive tape 14 is arranged along the opening of the waterproof breathable bootie 10 . It may also be arranged at some distance from the opening of the waterproof breathable bootie 10 . In either case, the adhesive tape 14 is considered to be arranged within the collar region of the waterproof breathable bootie 10 . The sewing of the adhesive tape 14 to the waterproof breathable bootie 10 is illustrated by the zigzag line 90 . The adhesive tape 14 includes a thermoplastic bonding agent, such as a thermoplastic polyurethane. The resulting waterproof breathable bootie 10 is thus attached to the interior space of the footwear by inserting the waterproof breathable bootie 10 within the interior space and by activating the thermoplastic adhesive of the adhesive tape 14 . is composed

2 illustrates a method for permanently waterproofing footwear according to an exemplary embodiment of the present invention, by depicting various process steps in a schematic manner. 2A is a schematic side view; In FIG. 2A , a waterproof breathable bootie 10 is provided on the shoe bone 20 . The oral bone 20, as will become apparent below, is the first oral bone used in the process described with respect to FIG. 2 .

The oral bone 20 is an inflatable and heatable oral bone. The oral bone 20 is depicted in an unexpanded state in FIG. 2A . The acetabulum 20 includes an anterior acetabulum portion 24 and a posterior acetabulum portion 26 . The anterior acetabulum portion 24 and the posterior acetabulum portion 26 are movable relative to each other. In particular, the space between the anterior acetabulum portion 24 and the posterior acetabulum portion 26 may be increased in the anterior-posterior direction of the acetabulum. The coccyx 20 may also be referred to as a split coccyx. Both the anterior iliac crest 24 and the posterior iliac crest 26 are supported by a sulcus support arm structure 28 . The coccyx support arm structure allows the coccyx 20 to float such that any structure arranged on the coccyx does not have to be supported from the floor. It is also possible for the anterior acetabulum portion 24 and posterior acetabulum portion 26 to be coupled to each other via an inflatable cylinder or any other suitable inflation mechanism.

2A further depicts the sole pressure plate 30 . The sole pressure plate 30 is movable in the vertical direction. It is also possible that the support arm structure 28 is movable in the vertical direction. The sole pressure plate 30 is configured to apply pressure on the underside of the shoe bone 20 and any intervening structure, ie, any intervening portion of the footwear. In FIG. 2A , the sole pressure plate 30 is depicted as spaced apart from the shoe bone 20 .

As stated above, a waterproof breathable bootie 10 is provided on the shoe bone 20 . The waterproof breathable bootie 10 may be the waterproof breathable bootie 10 as described above with respect to FIG. 1 . It may also be any other suitable type of waterproof breathable bootie 10 .

As depicted in FIG. 2A , a waterproof breathable bootie 10 includes an adhesive tape 14 within its collar region. The adhesive tape 14 is depicted in a dotted pattern. Additionally, the waterproof breathable bootie 10 includes a boot-side adhesive patch 16 in the toe region of the waterproof breathable bootie 10 . A bootie-side adhesive patch 16 is provided on both the front side and the underside of the waterproof breathable bootie 10 in the toe area. The bootie-side adhesive patch 16 may be applied via spraying or brushing. An exemplary adhesive for the bootie-side adhesive patch 16 is a latex-based adhesive Technicoll ® 9222-1.

2B depicts a shoe bone 20 and waterproof breathable bootie 10 inserted into footwear 2 . In other words, between the depictions of FIGS. 2A and 2B , footwear 2 has been slid over shoe bone 20 to have waterproof breathable bootie 10 arranged thereon. 2B is also a schematic side view.

Footwear 2 has an upper assembly 4 with an outer structure and a sole 8 . Inside the upper assembly 4 and the sole 8 , there is an interior space 12 . This interior space 12 may be referred to as the interior space 12 of the footwear 2 . The shoe bone 20 and waterproof breathable bootie 10 are depicted being inserted into the interior space 12 .

Additionally, a footwear-side adhesive patch 18 in the heel region of the interior space 12 is provided. The footwear-side adhesive patch 18 is applied on the rear portion of the interior space 12 , ie on the portion of the interior space 12 that extends upwardly behind the user's heel, and on the rear end of the sole portion of the interior space. is provided on The footwear-side adhesive patch 18 may be applied via spraying or brushing. An exemplary adhesive for the footwear-side adhesive patch 18 is a latex-based adhesive Technicoll ® 9222-1.

2C illustrates the first step of securing the waterproof breathable bootie 10 in place within the interior space 12 . In other words, FIG. 2C illustrates the first step of attaching the waterproof breathable bootie 10 to the footwear 2 . 2C is also a schematic side view.

As compared to the state in FIG. 2B , the anterior acetabulum portion 24 and the posterior acetabulum portion 26 are spaced apart. As a result, the waterproof breathable bootie 10 is pushed towards the front and rear portions of the outer structure of the upper assembly 4 . Additionally, the sole pressure plate 30 is moved relative to the sole 8 . Given the pressure exerted by the shoebone 20 and the sole pressure plate 30 and given the intrinsic stability of the footwear 2, the waterproof breathable bootie 10 can be applied against the upper assembly 4 and against the sole ( 8) is pushed against. At the same time, the oral bone 20 is heated. Through application of pressure and heating, the bootie-side adhesive patch 16 in the toe region and footwear-side adhesive patch 18 in the heel region bond the waterproof breathable bootie 10 and the upper assembly 4 . In this way, the waterproof breathable bootie 10 is secured in place within the interior space 12 of the footwear 2 . Depending on the specific footwear structure in question, the waterproof breathable bootie 10 may include an outer structure of the upper assembly 4 , a hidden portion of the upper assembly 4 such as its assembled insole, and one or all of the sole 8 . , or a subset. As depicted in FIG. 2C , while application of pressure and heating is primarily intended to activate the bootie-side adhesive patch 16 in the toe region and footwear-side adhesive patch 18 in the heel region, the adhesive tape You may also experience some preliminary positioning.

In the exemplary embodiment of FIG. 2C , the acetabulum 20 is heated to about 78° C. and the anterior acetabulum portion 24 and posterior acetabulum portion 26 are opened with a pressure of about 2.5 bar. , and the sole pressure plate is pressed against the central sole 8 with a pressure of about 4 bar. These temperature and pressure values are maintained for about 15 minutes. It is noted that the temperature and pressure values may depend on the footwear in question, on the adhesive used, on the tool used, and on other factors. For example, the anterior acetabulum portion 24 and the posterior acetabulum portion may open with pressure between 0.5 bar and 7 bar. The sole pressure plate may also be pressed against the midsole with pressure between 1 bar and 5 bar.

2D illustrates the securing of the adhesive tape 14 in place within the interior space 12 of the footwear 2 . The footwear 2 and the waterproof breathable bootie 10 are arranged on the other shoe bone 22 in FIG. 2D . This other shoe bone 22 is also referred to herein as the second shoe bone 22 as it is used in the second step of securing the waterproof breathable bootie 10 in place. The oral bone 22 is not inflatable. In particular, the coccyx 22 is not a split coccyx in the exemplary embodiment of Fig. 2D. Instead, the shoe bone 22 provides a continuous structure for the inner side of the adhesive tape 14 that is arranged within the collar region of the waterproof breathable bootie 10 . In addition, the shoe bone 22 is heatable. The shoe bone 22 , footwear 2 , and waterproof breathable bootie 10 are depicted in a schematic side view at the top of FIG. 2D and a schematic horizontal cross-sectional view at the bottom of FIG. 2D .

In the process step depicted in FIG. 2D , pressure is applied on the shoebone 22 from the outside of the footwear, through the instep pressurization device 32 and through the forked heel pressurization device 34 . The instep press device 32 and the shoe bone 22 form a press for the anterior portion of the collar region of the waterproof breathable bootie 10, and thus the adhesive tape 14 of the waterproof breathable bootie 10 at that portion. and to help create an attachment between the upper assembly (4). The forked heel press device 34 and the shoe bone 22 form a press for the rear portion and the left side and right side portions of the collar region of the waterproof breathable bootie 10, and thus in such portion the waterproof breathable bootie To assist in creating an attachment between the adhesive tape 14 of 10 and the upper assembly 4 .

In the exemplary embodiment of FIG. 2D , the coccyx 22 is heated to between 20°C and 130°C. The instep press device 32 and the forked heel press device 34 are pushed against the outer structure of the upper assembly 4 with a pressure of between 0.2 bar and 5 bar. These temperature and pressure values are maintained for about 3 minutes. It is noted that the temperature and pressure values may depend on the footwear in question, on the adhesive used, on the tool used, and on other factors.

Similar to the forked heel pressing device 34 , a dome-shaped toe capable of applying pressure on the upper assembly 4 and potentially the sole, with a suitable shoe bone extending into the toe box of the footwear 2 . A zone pressurization device may be used.

It is noted that, although described with respect to FIG. 2 , this order can also be reversed, as before attachment via the adhesive tape 14 is made, attachment in the toe region and heel region is first achieved. In particular, the waterproof breathable bootie 10 and footwear 2 are first, the waterproof breathable bootie 10 and footwear, depicted in FIGS. Prior to placement, the attachment via adhesive tape 14 may be arranged on the shoe bone 22 , depicted in FIG. 2D . It is also possible to have a single shoe bone allowing all attachment operations. In particular, such a single shoe bone may be molded to form a solid structure at substantially any location where attachment between the waterproof breathable bootie 10 and the upper assembly and/or sole occurs.

3 illustrates a method for permanently waterproofing footwear according to another exemplary embodiment of the present invention, by depicting various process steps in a schematic manner. 3A is a schematic side view; In FIG. 3A , the coccyx 23 is depicted. The shoe bone 23 is a heatable shoe bone. The shoe bone has a heating device 36 and an electrical cord 38 by which the heating device 36 is powered.

FIG. 3B depicts the waterproof breathable bootie 10 arranged on the shoe bone 23 of FIG. 3A . 3B is also a schematic side view. The waterproof breathable bootie (10) includes an adhesive tape (14) within the collar region of the waterproof breathable bootie (10). It further comprises a bootie-side adhesive patch 16 in the toe region of the waterproof breathable bootie 10 and a bootie-side adhesive patch 16 in the heel region.

FIG. 3C depicts the shoe bone 23 and waterproof breathable bootie 10 of FIG. 3B inserted into footwear 2 . 3C is also a schematic side view. In particular, the shoe bone 23 and the waterproof breathable bootie 10 are formed into the interior space of the footwear 2 , in particular by the upper assembly 4 of the footwear 2 and the sole 8 of the footwear 2 . into the interior space, it is inserted.

3D depicts the beginning of the arrangement of the shoe bone 23 , the waterproof breathable bootie 10 , and the bag 39 around the footwear 2 . 3D is also a schematic side view. Although depicted in a schematic two-dimensional manner, it is understood that bag 39 forms a three-dimensional structure around shoe bone 23 , waterproof breathable bootie 10 , and footwear 2 .

FIG. 3E depicts the components of FIG. 3D accompanying the evacuated bag 39 . 3E is also a schematic side view. Due to the evacuation of the bag 39 , the bag 39 conforms to the outer shape of the footwear 2 and the shoebone 23 , thereby applying overall pressure on the footwear 2 against the shoebone 23 . let it do The pressure on the footwear 2 may be further increased by increasing the air pressure around the bag 39 above atmospheric pressure. At the same time, the shoe bone 23 is heated, thereby activating the adhesive tape 14 and the bootie-side adhesive patches 16 in the toe region and heel region. Effective securing in place of the waterproof breathable bootie 10 within the interior space of the upper assembly 4 and the sole 8 occurs. Evacuation may be performed by any suitable suction source. The application of additional pressure from the outside of the bag may be effected by any suitable pressure source, such as inside a pressurized air chamber.

4 shows footwear 2 according to various exemplary embodiments of the present invention, waterproofed by a method for permanently waterproofing footwear according to exemplary embodiments of the present invention. The footwear 2 of FIG. 4 is shown in a schematic longitudinal cross-sectional view. The footwear 2 of FIG. 4 may be waterproof according to any of the methods described herein, particularly according to any of the methods described above with respect to FIGS. 1-3 .

FIG. 4A shows a footwear 2 according to an exemplary embodiment of the present invention, depicted in a longitudinal cross-sectional view, wherein the cross-sectional plane of FIG. 4A extends substantially through the center of the footwear 2 . The footwear 2 includes an upper assembly 4 and a sole 8 . The footwear 2 is a structure shape|molded according to the shoe bone. Upper assembly 4 includes a breathable upper material 40 , such as leather, suede, fabric, or any other suitable material, and a building insole 44 . The breathable upper material 40 continues peripherally on the building insole 44 from below. In particular, the breathable upper material 40 is bonded to the bottom surface of the building insole 44 along its perimeter with a long lasting adhesive.

Upper assembly 4 further includes a tongue 42 . In the exemplary embodiment of FIG. 4A , the tongue 42 is a structure that is originally separate from the breathable upper material 40 and is attached to the breathable upper material, such as through sewing or bonding. It is also possible for the tongue 42 and breathable upper material 40 to be integrally formed from a continuous piece of material. The breathable upper material 40 and the tongue 42 form the outer structure 6 of the footwear 2 . In general, the outer structure 6 of the footwear 2 may be a single integrated structure, such as a three-dimensional knitted fabric, or may be made of a variety of original, breathable materials, as is common in, for example, leather shoes/boots. It may be assembled from separate pieces.

Upper assembly 4 further includes a collar 5 . The collar 5 forms the upper end of the upper assembly 4 . It surrounds the foot insertion opening.

In the exemplary embodiment of FIG. 4A , the sole 8 is a solid structure of a non-breathable material, for example a solid plastic structure. In the exemplary embodiment of FIG. 4A , the sole 8 is configured to form a strong bond to the assembly insole 44 and to a portion molded to conform to the shoebone of the upper material 40 in the process of injection. (4) is injected on the lower side. The sole 8 may also be bonded to a lower portion of the upper assembly 4 . In addition, it is possible for the sole 8 to be made of inherently breathable materials, such as leather, and/or for the sole to have a structure allowing ventilation through the sole, as will be described below. .

A waterproof breathable bootie 10 is arranged in the interior space 12 of the footwear 2 . In particular, the waterproof breathable bootie 10 is arranged within the interior space 12 , as provided by the upper assembly 4 and the sole 8 . In addition to the footwear 2 of FIG. 4A having a structure molded to conform to the shoe bone, the waterproof breathable bootie 10 has an interior space 12 , as provided by an exterior structure 6 and an assembly insole 44 . ) is provided in The waterproof breathable bootie 10 was inserted into the interior space 12 and secured in place within the interior space 12 , as described in any of the above exemplary embodiments. The waterproof breathable bootie 10 is a sock-like structure. The waterproof breathable bootie 10 , arranged within the interior space 12 , may also be referred to as a shoe insert. The waterproof breathable bootie 10 may be any suitable waterproof breathable bootie, particularly any type of waterproof breathable bootie as described herein. In the exemplary embodiment of FIG. 4A , the upper end of the waterproof breathable bootie 10 is flush with the upper end of the upper material 40 . It is also possible for the upper end of the waterproof breathable bootie 10 to terminate below the upper end of the upper material 40 or extend above the upper end of the upper material 40 .

The footwear 2 includes a forefoot portion 90 , a midfoot portion 92 , and a hindfoot portion 94 . Forefoot portion 90 , midfoot portion 92 , and hindfoot portion 94 are separated by dashed lines in FIG. 4A . Forefoot portion 90 may also be referred to as the toe region of the footwear. The hindfoot portion 94 includes a heel region 96 in its lower portion. The footwear further includes a wearing area 98 . The wearing region 98 may be the upper portion of the backfoot portion 94 , or may extend within both the upper portion of the backfoot portion 94 and the upper portion of the midfoot portion 92 .

The waterproof breathable bootie 10 is provided in the forefoot region/toe region 90 , in the heel region 96 , and in the wear region 98 , in the breathable upper material 40 , in the tongue 42 , And it is attached to the assembly insole (44). In particular, the waterproof breathable bootie, as will be described below, is held in place by various adhesive elements.

The waterproof breathable bootie 10 is attached to the breathable upper material 40 and the tongue 42 within the wear area 98 via an adhesive tape 14 that wraps around the perimeter of the waterproof breathable bootie 10 . The waterproof breathable bootie 10 is further attached via two bootie-side adhesive patches 16 within the heel region 96 , to the breathable upper material 40 and to the building insole 44 . Further further, the waterproof breathable bootie 10 is attached to the breathable upper material 40 and to the building insole 44 within the toe region 90 via two bootie-side adhesive patches 16 . Attachment may have been accomplished, as described above with respect to FIGS. 1-3 . Both the adhesive tape 14 and the bootie-side adhesive patches 16 may include a heat activated adhesive. It is understood that the arrangement of adhesive elements is exemplary in nature, and that positioning of the waterproof breathable bootie 10 may also be achieved through other adhesive arrangements. It is also possible that while the adhesive patches 16 have been described as bootie-side adhesive patches because they have been applied to the waterproof breathable bootie 10 prior to bonding, it is also possible that footwear-side adhesive patches may be used. A combination of bootie-side adhesive patches and footwear-side adhesive patches is also possible. In the exemplary embodiment of FIG. 4A , the waterproof breathable bootie 10 extends somewhat higher than the adhesive tape 14 . However, as shown in FIGS. 1 to 3 above, it is also possible for the adhesive tape 14 to be formed on the uppermost part of the waterproof breathable bootie 10 .

In the exemplary embodiment of FIG. 4A , the waterproof breathable bootie 10 is not attached to the remainder of the upper assembly 4 within the midfoot portion 92 . In particular, in the exemplary embodiment of FIG. 4A , the waterproof breathable bootie 10 is assembled within the midfoot portion 92 , including the breathable upper material 40 and the outer structure comprising the tongue 42 , as well as the assembly insole 44 . Also, it is not attached. In this way, the waterproof breathable bootie 10 is free to move within the midfoot portion 92 relative to the surrounding elements of the upper assembly 4 . This provides a comfortable fit to the user. The waterproof breathable bootie 10 may further be elastic, at least in the midfoot portion. In that way, the bootie may conform well to the user's foot.

Figure 4b shows a footwear 2 according to another exemplary embodiment of the present invention. The footwear 2 of FIG. 4B is very similar to the footwear 2 of FIG. 4A . Like elements are denoted by like reference numerals, and the above description thereof is referenced. In the exemplary embodiment of FIG. 4B , the waterproof breathable bootie 10 extends over the collar 5 . In other words, the foot insertion portion of the waterproof breathable bootie 10 extends upward more than the foot insertion portion of the external structure 6 . This stretch of the waterproof breathable bootie 10 may provide a more comfortable more sock-like feel to the user of the footwear 2 .

4c shows a footwear 2 according to another exemplary embodiment of the present invention. The footwear 2 of FIG. 4C is very similar to the footwear 2 of FIG. 4A . Like elements are denoted by like reference numerals, and the above description thereof is referenced. In the exemplary embodiment of FIG. 4C , the upper end of the waterproof breathable bootie 10 wraps around the collar 5 of the upper assembly 4 . The enclosing perimeter portion of the waterproof breathable bootie 10 is attached to the outer upper end of the outer structure 6 via additional boot-side adhesive patches 16 . Attachment via these additional bootie-side adhesive patches 16 may be concurrent with attachment via adhesive tape 14 . It is also possible for the adhesives to be activated separately. Additionally, it is possible for additional footwear-side adhesive patches to be provided instead of the additional boot-side adhesive patches 16 . The encircling perimeter portion of the waterproof breathable bootie 10 may provide a particularly convenient insertion of the foot for the user as the foot is guided into the waterproof breathable bootie 10 in a funnel-like manner.

4D shows footwear 2 according to another exemplary embodiment of the present invention. The footwear 2 of FIG. 4D is very similar to the footwear 2 of FIG. 4A . Like elements are denoted by like reference numerals, and the above description thereof is referenced. In the exemplary embodiment of FIG. 4D , waterproof breathable bootie 10 is sewn to upper assembly 4 through seam 15 sewn within wearing region 98 of footwear 2 . Instead of relying on adhesive tape 14 , sewn seam 15 achieves attachment between waterproof breathable bootie 10 and footwear 2 within wear zone 98 . It is also possible for the weld between the waterproof breathable bootie 10 and the upper assembly 4 to be provided as an alternative means of attachment.

5 is a schematic cross-sectional view of footwear 2 according to various exemplary embodiments of the present invention, waterproofed by a method for permanently waterproofing footwear according to exemplary embodiments of the present invention; show In particular, FIG. 5A shows the footwear 2 of FIG. 4A , along the cross-sectional plane indicated by the line A-A in FIG. 4A . The cross-sectional plane of FIG. 5A is cut through the midfoot portion 92 , approximately midway thereto. As stated above, the sole 8 is a solid structure, such as the extruded plastic structure in the exemplary embodiment of FIGS. 4A and 5A .

Figure 5b shows a footwear 2 according to another exemplary embodiment of the present invention. The footwear 2 of FIG. 5B is a modified example of the footwear 2 of FIGS. 4A and 5A. In particular, although the upper assembly 4 of the footwear 2 of FIG. 5B is the same as the upper assembly 4 of FIGS. 4A and 5A , the sole 8 of the footwear 2 of FIG. It is a modified example of the sole 8 of Fig. 5b shows a cross-sectional view similar to that of Fig. 5a;

The sole 8 of the footwear 2 of FIG. 5B is a breathable sole. In particular, the sole 8 is a breathable structure. The sole 8 has a perimeter portion 60 and stabilizing bars 62 . The stabilization bars 62 and the perimeter portion 60 may be integrally molded from a plastic material. Although the stabilization bars 62 are depicted as longitudinal bars in the cross-sectional view of FIG. 5B , the stabilization bars 62 may be arranged in a different orientation. In particular, the stabilization bars 62 may form a stabilization grating within the perimeter portion 60 . The stabilization bars 62/stabilization grating may extend over one or more portions of the sole 8 , for example over a forefoot portion of the sole 8 and/or over a heel portion of the sole 8 .

Between the stabilization bars 62/stabilization grating, water vapor release holes 66 are provided. The water vapor release holes 66 are relatively large in diameter and thus allow the release of a large amount of water vapor through the sole 8 . The water vapor release apertures 66 extend substantially vertically through the sole 8 . Above the water vapor release holes 66 , a barrier material 94 is provided. In particular, a barrier material is provided between the peripheral portions 60 of the sole 8 , under the assembly insole 44 , and above the stabilization bars 62 . The barrier material is breathable, ie permeable to water vapor, and protects the upper assembly 4 thereon from foreign matter that may penetrate through the water vapor release apertures 66 .

The footwear 2 of FIG. 5B allows for the release of water vapor not only through the sole 8 , but also through the breathable upper material 40 . Water vapor passes through the footwear (2) from the underside of the wearer's foot, through the waterproof breathable bootie (10), through the assembly insole (44), through the barrier material (94), and through the vapor release apertures (66). can move to the external environment of As the bootie is equipped with a breathable waterproof laminate, the wearer's feet are protected from water and also from water entering through the water vapor release holes 66 .

Figure 5c shows a footwear 2 according to another exemplary embodiment of the present invention. The footwear 2 of FIG. 5C is a modified example of the footwear 2 of FIGS. 4A and 5A. In particular, although the upper assembly 4 of the footwear 2 of FIG. 5C is the same as the upper assembly 4 of FIGS. 4A and 5A , the sole 8 of the footwear 2 of FIG. It is a modified example of the sole 8 of Fig. 5c shows a cross-sectional view similar to that of Fig. 5a;

The sole 8 of the footwear 2 of FIG. 5C is a breathable sole, like the sole 8 of the footwear 2 of FIG. 5B . The sole 8 of FIG. 5B relies on the emission of water vapor towards the bottom of the sole, whereas the sole 8 of FIG. 5C relies on the emission of water vapor towards the lateral sides of the sole. The bottom surface of the sole 8 of FIG. 5C has no water vapor release holes. However, it is also possible for the sole of footwear according to exemplary embodiments of the present invention to be provided with water vapor release holes facing the floor and facing the side.

The sole 8 of FIG. 5C has a structure or material that allows air flow therethrough, generally indicated by reference numeral 68 . Structure or material 68 can be any suitable structure or material that permits airflow through itself and thus allows transport of water vapor from the inside of the shoe, through the lateral sides, and out of the shoe. will be able Structure or material 68 may be, for example, a channel structure, or a spacer fabric, or a particulate filler, or any other suitable structure or material. The sole 8 may further include a plurality of water vapor release apertures 66 . In the cross-sectional view of FIG. 5C , two of the plurality of water vapor release holes 66 are shown. It is understood that any suitable number of water vapor release holes 66 may be arranged around the periphery of the sole 8 .

Water vapor release holes 66 are provided from the structure or material 68 towards the lateral sides of the sole 8 . In particular, the water vapor release holes 66 are substantially horizontal in the exemplary embodiment of FIG. 5C . Additionally, the water vapor release apertures 66 are, in the exemplary embodiment of FIG. 5C , a substantially circular cross-section. However, the water vapor release holes may have any suitable cross-section.

The footwear 2 of FIG. 5C allows for the release of water vapor not only through the sole 8 , but also through the breathable upper material 40 . Water vapor passes from the underside of the wearer's foot, through the waterproof breathable bootie 10, through the assembly insole 44 , into and through the structure or material 68 , and through the water vapor release holes 66 . Through it, it can move to the external environment of the shoe. Due to the straight air flow path between the left and right sides of the sole 8 , efficient water vapor release through the sole 8 may be achieved. As the bootie is equipped with a breathable waterproof laminate, the wearer's feet are protected from water and also from water entering through the water vapor release holes 66 .

6 illustrates, in a schematic manner, various tongue structures, such as may be present in footwear according to exemplary embodiments of the present invention. 6 shows schematic top views of individual tongue structures. 6A depicts a portion of the upper material 40 of the upper assembly 4 and the originally separated tongue 42 . Tongue piece 42 is attached to upper material 40 . In particular, the tongue 42 is sewn to the upper material 40 . 6B shows a portion of the upper material 40 of the upper assembly 4 . In the embodiment of FIG. 6B , tongue 42 is an integral part of upper material 40 . It can be said that the outer structure has an integral tongue. 6C depicts a portion of upper material 40 of upper assembly 4 , tongue 42 , and intermittent bridge piece 46 . Both upper material 40 and tongue 42 are attached to intermittent bridge piece 46 . In particular, both the upper material 40 and the tongue 42 are sewn to the intermittent bridge piece 46 . A method of waterproofing footwear, as described in any of the above embodiments, comprising inserting a waterproof breathable bootie (10), and securing the waterproof breathable bootie (10) in place, comprises the depicted tongue structures It is applicable to footwear equipped with all. The fixation of the waterproof breathable bootie 10 may be adapted to the tongue structure of the footwear in question.

7 depicts exemplary embodiments of waterproof breathable laminates for use in waterproof breathable booties for a method for waterproofing footwear in accordance with exemplary embodiments of the present invention. 7A shows a waterproof breathable three-layer laminate 51 . The three-layer laminate 51 includes a functional layer 54 , a first textile layer 56 , and a second textile layer 58 , which in the exemplary embodiment of FIG. 7A is an ePTFE membrane. The first fabric layer 56 and the second fabric layer 58 are knitted layers in the exemplary embodiment of FIG. 7A .

7B shows a waterproof breathable two-layer laminate 51 . The two-layer laminate 51 has a functional layer 54 , which is an ePTFE membrane in the exemplary embodiment of FIG. 7B , and a fabric layer 56 , which is a knitted layer in the exemplary embodiment of FIG. 7B . Laminate 51 can be used in any orientation for waterproof breathable bootie 10, i.e., two-layer laminate 51, with a functional layer 54 facing the wearer's feet and the wearer's It can be used with a layer of fabric 56 facing the foot.

Test Methods and Definitions

Functional layers and laminates, provided that the requirements specified in DIN EN 343 (2010) are met, i.e. a test of liquid water resistance to hydrostatic pressure according to EN 20811 (1992) yields a liquid water resistance (Wp) of at least 8000 Pa In this case, it is considered to have waterproof properties.

Water vapor permeability, as used herein in relation to a functional layer and a laminate comprising a functional layer, is tested and defined in EN ISO 15496, also known as the “cup test”. A 20 x 20 cm or Ø 100 mm sample of the waterproof breathable laminate is placed on a container containing water and covered with a membrane. A cup containing potassium acetate and covered by the same membrane is then placed on the sample. Water vapor passes through the stack and into the cup, and the weight gain of the cup is then determined. A laminate is considered to be water vapor permeable or breathable if its water vapor permeability is greater than or equal to 0.01 g/(Pa*m2*h). If a sample of the required size cannot be obtained, a smaller sample, using a smaller cup, containing half the amount of potassium acetate specified in the standard, i.e. 50 g instead of 100 g, and mixed with 15.6 g of water is taken. , can be used for measurement. The terms “water vapor permeability” and “breathable” are used interchangeably herein. Accordingly, the waterproof breathable laminate may also be referred to as a waterproof water vapor permeable laminate.

The waterproofness of footwear may be determined by use of a centrifuge test, which is incorporated herein by reference in its entirety and described in US Pat. No. 5,329,807. Centrifuge tests may be performed for 30 minutes. An article of footwear is considered waterproof if no leaks are identified after 30 minutes.

The breathability of footwear may be assessed according to the determination of the overall boot water vapor transmission rate test according to the Department of Defense Army Combat Boots Temperate Climate Specification. Specifications are as follows:

Full Boots Breathable

The boot breathability test should be designed to show the water vapor transmission rate (MVTR) through the test sample due to the difference in the concentration of water vapor between the interior and exterior environment.

Device

a. The external test environment control system shall be capable of maintaining 23(± 1)°C and 50%±2% relative humidity throughout the duration of the test.

b. The weigher shall be able to determine the weight of the test sample filled with water to an accuracy of (± 0.01) grams.

c. The water storage bag should be flexible so that it can be inserted into the test sample and conform to the inner contour; It must be thin enough so that the pleats do not create air gaps; It must have a much higher MVTR than the footwear product to be tested; And it must be waterproof so that only water vapor, not liquid water, comes into contact with the interior of the footwear.

d. The internal heater of the test sample shall be capable of uniformly controlling the temperature of the liquid water in the test sample to 35 (± 1)°C.

e. The sealing method around the collar of the test sample should not affect both liquid water and water vapor.

procedure

a. Place the sample in the test environment and conditions for a minimum of 12 hours.

b. A heating device is inserted into the water storage bag, and the complete assembly is then placed into the test sample opening and filled with water to a height of 5 cm measured from the inner sole.

c. Seal the opening around the collar with plastic wrap around the top of the footwear and tap from above using wrapping tape.

d. Heat the water in the test sample to 35°C.

e. The test sample is weighed and recorded as Wi.

f. Maintain the temperature in the test sample for at least 4 hours after weighing.

g. After a minimum of 4 hours, the test sample is weighed again. Record the weight as Wf and the duration of the test as Td.

h. Calculate the MVTR of the test sample in grams/hour from the equation: MVTR = (Wi - Wf)/Td.

This test is in accordance with ASTM D8041 (2016).

For example, for a European shoe size 42 low ankle shoe, the footwear may be considered breathable if the above calculated value is above 1.5 grams/hour. For larger/smaller shoe sizes, the threshold values may be extrapolated according to the increased/decreased surface area of the shoe.

The waterproofness and breathability of the bootie as a whole may also be determined, individually, by the use of the centrifuge test and the whole boot water vapor transmission rate test, as described above.

The elasticity of the laminate and of the bootie may be measured according to DIN EN 14704-1 (July 2005), method A. The test may be performed as specified herein, using a test sample of the following configuration: test sample width = 25 mm, test sample test length = 50 mm (test length, as gauge length, tensile machine length of the sample between the clamps, referred to in DIN EN), overall length of the test sample = 100 - 150 mm. The test sample is subjected to 3 to 5 successive test cycles. At each test cycle, the test sample is 10% of the gauge length for formed booties, for samples cut in the circumferential direction, 30% of the gauge length, and for samples cut longitudinally. of, subject to constant elongation, and the maximum force of the last cycle, is measured. The elongation and shrinkage of the sample should be set to 250 mm/min. The specimen length is measured, after the end of the last cycle, by placing the specimen on a flat surface and measuring the length between the applied reference marks inside the gauge length with a calibrated ruler. Elastic recovery expressed in % is obtained by subtracting the final length between applied reference marks from the original length between the reference marks, then dividing by the original length between the reference marks, and finally the result is 100 is calculated by multiplying Otherwise, the test conditions are as specified in DIN EN 14704-1 (July 2005), Method A. Elasticity is defined as the property of a material in which it stretches upon application of a force or elongation and returns toward its original length after removal of the applied force or elongation. Accordingly, the elasticity of a specimen is determined through measuring the force recorded during applied stretching (or vice versa) and the ability of the material to return toward its original length after the applied force or extension is removed.

Although the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that equivalents may be substituted for elements of the invention and various changes may be made without departing from the scope of the invention. Additionally, many modifications may be made to adapt a particular situation or material to the teachings of the present invention without departing from the essential scope thereof. Accordingly, it is intended that, instead of limiting the invention to the specific embodiments disclosed, the invention will include all embodiments falling within the scope of the appended claims.

Claims (20)

A method for permanently waterproofing footwear (2) comprising:
providing a waterproof breathable bootie (10) having a waterproof breathable laminate structure comprising a functional layer (54) and at least one fabric layer (56, 58);
inserting the waterproof breathable bootie 10 through the collar 5 of the footwear 2 into the interior space 12 of the footwear 2 after the interior space 12 of the footwear 2 is closed; and
A method comprising: permanently securing a waterproof breathable bootie (10) in place within an interior space (12) of a footwear (2);
attaching the waterproof breathable bootie (10) to the footwear (2) in a wearing area (98) of the footwear (2); and
by attaching the waterproof breathable bootie (10) to the footwear (2) in at least one additional attachment area of the footwear (2).
to fix permanently
A method comprising: According to claim 1,
wherein insertion of the waterproof breathable bootie (10) occurs after the interior space (12) is formed by the upper assembly (4) of the footwear (2). 3. The method of claim 2,
Insertion of waterproof breathable bootie (10) occurs after sole 8 of footwear (2) is applied by upper assembly (4), or insertion of waterproof breathable bootie (10) of footwear (2) wherein the sole (8) occurs prior to being applied by the upper assembly (4). According to claim 1,
wherein insertion of the waterproof breathable bootie (10) occurs after the interior space (12) is jointly formed by the upper assembly (4) of the footwear (2) and the sole (8) of the footwear (2). 5. The method according to any one of claims 1 to 4,
The method, wherein the waterproof breathable bootie (10) is composed of the waterproof breathable laminate structure. 6. The method according to any one of claims 1 to 5,
The attachment of the waterproof breathable bootie (10) to the footwear (2) in the wearing zone (98) of the footwear (2) is in the wearing zone (98) of the footwear (2), in the collar zone of the waterproof breathable bootie (10) and adhering an adhesive tape (14) of a waterproof breathable bootie (10) arranged thereon. 6. The method according to any one of claims 1 to 5,
Attachment of the waterproof breathable bootie belt 10 to the footwear 2 in the wearing zone 98 of the footwear 2 comprises: A method comprising sewing. 8. The method according to any one of claims 1 to 7,
Attachment of waterproof breathable bootie (10) to footwear (2) in wearing area (98) of footwear (2) is to attach waterproof breathable bootie (10) to footwear (2) at a distance of at least 2 cm from the sole portion of interior space (12). A method comprising attaching to 9. The method according to any one of claims 1 to 8,
The attachment of the waterproof breathable boot band 10 to the footwear 2 in the at least one additional attachment region of the footwear 2 may include: at least one of a toe region of the footwear 2 and a heel region of the footwear 2 ( 2) attaching a waterproof breathable bootie (10) to the method. 10. The method of claim 9,
The attachment of the waterproof breathable boot strap 10 to the footwear in the at least one additional attachment region of the footwear 2 to the footwear 2 in at least one of the toe region of the footwear 2 and the heel region of the footwear 2 . and gluing a waterproof breathable bootie (10). 11. The method according to any one of claims 1 to 10,
The step of permanently securing the waterproof breathable bootie (10) within the interior space (12) of the footwear (2) includes adhering the waterproof breathable bootie (10) to the footwear (2) along substantially its entire outer surface. how to do it. 12. The method according to any one of claims 1 to 11,
Inserting the waterproof breathable bootie 10 into the interior space 12 comprises arranging the waterproof breathable bootie 10 on the shoe bones 20, 22, 23 and the waterproof breathable bootie 10 into the interior space 12 ( 10) together with the oral bone (20, 22, 23). 13. The method of claim 12,
The shoe bone 20 is inflatable, and the step of permanently securing the waterproof breathable bootie 10 in place within the interior space 12 includes inflating the shoe bone 20 within the interior space 12 . wherein the oral bone 20 particularly includes at least two oral bone portions 24 , 26 , and the step of expanding the oral bone 20 within the interior space 12 comprises: and spacing the portions (24,26). 14. The method of claim 12 or 13,
The shoe bones 20 , 22 , 23 are heatable and the step of permanently securing the waterproof breathable boot strap 10 in place within the lumen 12 , when inserted into the lumen 12 , comprises: (20, 22, 23) comprising heating (20, 22, 23). 15. The method according to any one of claims 12 to 14,
The step of permanently securing the waterproof breathable boot strap 10 in place within the interior space 12 may include from the outside of the upper assembly 4 of the footwear 2 and/or the outside of the sole 8 of the footwear 2 . applying pressure to the shoe bones (20, 22, 23) from the outside of the upper assembly (4) and/or from the outside of the sole (8); is especially:
applying pressure to the instep portion of the upper assembly (4) via the instep pressing device (32);
applying pressure around the heel portion of the upper assembly (4) via the forked heel pressing device (34);
applying pressure to the sole (8) through the sole pressure plate (30);
Applying pressure around substantially the entire upper assembly 4 and sole 8 through the bag 39 around the footwear 2 and the shoe bone 23 .
A method comprising at least one of 16. The method according to any one of claims 1 to 15,
wherein the waterproof breathable bootie (10) is at least partially elastic. 17. The method of claim 16,
The waterproof breathable bootie (10) is elastic, at least in the midfoot portion thereof, particularly in the midfoot portion extending at least along at least 50% of the length from the tip portion of the waterproof breathable bootie (10) to the trailing end of the waterproof breathable bootie (10). enemy, and/or
The method according to claim 1, wherein the waterproof breathable bootie (10) is elastic in its upper portion, at least in its upper portion, in particular at least along at least 40%, in particular at least 50%, along at least 50% of its circumference. . 18. The method according to any one of claims 1 to 17,
The waterproof breathable laminate structure comprises an integral functional layer and at least one textile layer, wherein the integral functional layer is in particular a seamless integral functional layer, or
The waterproof breathable laminate structure comprises a plurality of waterproof breathable laminate pieces, each of the plurality of waterproof breathable laminate pieces comprising a functional layer piece and at least one fabric layer piece, or
wherein the waterproof breathable laminate comprises a plurality of functional layer pieces and at least one fabric layer. 19. The method according to any one of claims 1 to 18,
The upper assembly 4 has an upper material 40 , and the upper assembly 4 is a unitary tongue, tongue piece upper, wherein a portion of the upper material 40 forms a tongue of the footwear 2 . one of a separated tongue 42 , which is attached to material 40 , and a gusset-type tongue, wherein the tongue piece 42 is attached to upper material 40 via an intermittent bridge piece 46 . and permanently securing the waterproof breathable bootie (10) in place within the interior space (12) comprises: A method comprising attaching a. As footwear (2),
Footwear produced according to the method according to claim 1 .

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