CN213370279U - Breathable waterproof footwear - Google Patents

Abstract

The present application relates to a breathable waterproof footwear comprising an upper, a padding layer, an insole and a sole; wherein the upper includes an outer layer facing an exterior of the article of footwear, an inner layer facing an interior of the article of footwear, a functional layer disposed therebetween, and a rim layer attached to the inner layer and the insole; wherein a first portion of the functional layer is attached to the inner layer and a second portion of the functional layer is attached to the edge layer; and wherein the padding layer is attached to the functional layer and the insole.

Description

Breathable waterproof footwear

Technical Field

The utility model relates to a shoes goods especially relates to ventilative waterproof shoes goods.

Background

Sheepskin boots originated in australia and new zealand and typically included two-sided sheepskins, the wool facing the inside of the boot, the leather surface of the sheepskin facing the outside of the boot, and an artificial sole attached to the underside.

These boots are commonly referred to in australia and new zealand as "ugg boots" where they are believed to originate from handmade sheepskin boots worn by wool trimmers because of their resistance to lanolin. Today, sheepskin boots are popular worldwide for their comfort and warmth. The sheepskin boots are manufactured, for example, as slippers, as well as ankle boots or top boots.

These sheepskin boots should not be worn in a wet environment or in snow to avoid damage and soiling of the boots. Although the exterior of the sheepskin boot may be treated with a sprayed-on water repellent, the water repellent may polish quickly, allowing the leather to absorb large amounts of water and contaminants. As a result, the outside of the sheep leather boot is easily scratched and dirtied. At the same time, water can migrate from the exterior of the boot to the wool on the interior, which can lead to a wet feel on the interior of the boot and an unpleasant smell of the boot. In addition, subsequent drying of the sheepskin boot can be time consuming and can increase the odor of the boot.

There is therefore a need for a waterproof and breathable sheepskin boot which avoids the above mentioned drawbacks and allows comfortable wearing of such boots in all conditions.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve the problems observed when providing a water vapor permeable and waterproof footwear.

A first aspect of the present invention is a breathable waterproof footwear article comprising an upper, a padding layer, an insole, and a sole; wherein the upper includes an outer layer facing an exterior of the article of footwear, an inner layer facing an interior of the article of footwear, a functional layer disposed therebetween, and a rim layer attached to the inner layer and the insole; wherein a first portion of the functional layer is attached to the inner layer and a second portion of the functional layer is attached to the edge layer; and wherein the padding layer is attached to the functional layer and the insole.

A last board (molding board) may be attached to the cushion layer.

The inner layer may comprise an organic or synthetic material that includes at least one surface of pile or loop.

The inner layer can be selected from sheepskin; or a woven fabric made of organic and/or synthetic fibers. The inner layer may also be a lambskin. The inner layer may also be any other kind of animal skin.

The outer layer may be made of leather or synthetic leather.

The functional layer may comprise one of expanded polytetrafluoroethylene (ePTFE), Polyurethane (PU), Polyester (PES) and copolyetheresters, polyethers, Polyamides (PA), copolyetheramides and polyacrylates.

The edge layer may comprise a nonwoven fabric. In some embodiments, the edge layer may be a felt.

The width of the edge layer may be 5 to 15mm, optionally 7 to 13mm or 9 to 11 mm.

The edge layer may be attached to the inner layer and the insole by seams.

The article of footwear may be a boot or a slipper. The article of footwear may also be an ugg boot.

Brief description of the drawings

Fig. 1 illustrates one embodiment of an article of footwear of the present disclosure.

Detailed Description

While the making and using of various embodiments of the present invention are discussed in detail below, it should be appreciated that the present invention provides many applicable inventive concepts which can be embodied in a wide variety of specific contexts. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.

To facilitate an understanding of the present invention, a number of terms are defined below. The terms defined herein have the meanings commonly understood by those of ordinary skill in the art to which the invention pertains. Terms such as "a," "an," and "the" are not intended to refer to only a singular entity, but include its general class, of which a specific example may be used for illustration. The terms used herein are used to describe specific embodiments of the invention, but their usage does not limit the invention except as outlined in the claims.

The water vapor permeable and waterproof footwear includes an upper, a padding layer, an insole, and a sole.

The term "footwear" or "article of footwear" refers to the outer covering of the foot, such as a shoe, boot, athletic shoe, or the like. In particular, the article of footwear may be a boot, ugg boot, slipper or shoe. Boots or ugg boots may be ankle or knee height. The term "ugg boots" refers to neutral sheep leather boots originating from australia and new zealand.

Shoe upper

The upper includes an outer layer facing an exterior of the boot, an inner layer facing an interior of the boot, and a functional layer disposed between the outer layer and the inner layer. The upper also includes a border layer. The different layers of the upper may be at least partially laminated. Alternatively, the different layers may be sewn together, for example in the neck area, and optionally further glued together at least partially, for example by glue dots at specific points.

Thermal adhesive glue may be used for lamination. Adhesive powders, for example based on Polyurethane (PU) or Polyester (PE), can be distributed on the surface of the functional layer. Alternatively, if the adhesive is of the hot melt type, it may be applied to a substrate having a diameter of 0.1 to 2.0mm and a density of 50 to 600 dots/cm²Is applied to the surface to be attached. A thermal adhesive glue may be sprayed onto the surface to be attached. The thermal adhesive may be applied to the surface to be attached in any regular or irregular pattern.

Heating the different components to be attached to each other to a temperature above the melting point of the adhesive will bond the different layers, thereby forming a laminate. Typically, holding at a temperature of 100 ℃ to 150 ℃ for 5 to 20 seconds and applying pressure will form a water vapor permeable waterproofing laminate.

Outer layer

The outer layer may be made of any material commonly used for this purpose. Examples include leather, synthetic leather and textile fabrics.

The outer layer of the upper may be made of cowhide, calf skin, goat skin, sheep skin or horse skin. To provide different appearances and finishes, leather may be rough or fine grained, matte or glossy, metallic or shiny.

The most common types of leather are colored smooth leather (e.g., a pigment binder coating comprising a leather grain side), aniline leather (open grain leather), waxed or oiled leather, suede leather and nubuck leather.

To stabilize proteins, particularly collagen, the skins are tanned to improve the thermal, chemical and microbial stability of the skins.

Synthetic leather has a leather-like appearance and is made of different materials, such as synthetic polymers (e.g. polyester, polyurethane, polyvinyl chloride) or natural fiber substitutes (e.g. compressed bark of cork oak). The synthetic polymer sheet is hot-pressed with artificial leather particles to make it look like leather.

The woven fabric may comprise filaments, such as monofilaments, or fibers, or any mixture thereof. The fibers include natural fibers and synthetic fibers and any mixtures thereof. Natural fibers include cellulosic types, such as cotton, hemp or flax; animal fibres, such as silk, angora wool, sheep wool, alpaca, cashmere, mohair and any combination thereof.

Synthetic fibers include fibers based on acrylic polymers, polyesters, polyolefins, polyurethanes, and any combination thereof.

The woven fabric may be a knitted fabric, a woven fabric (woven fabric) or a nonwoven fabric.

As used herein, the term "knit" refers to any fabric or textile having a configuration in which at least one yarn, thread (thread) or monofilament is converted into a continuous row of loops, referred to as a loop seam. As each row advances, a new coil will be pulled through the existing coil. The live loop suture remains on the needle until another loop can pass through them.

During the weaving process, the fabric is formed by the intermeshing of yarn loops, yarns or monofilaments. Each thread of yarn or filament follows a tortuous path known as a "course", thus forming loops that are symmetrical to the tortuous path of the thread. When one coil is pulled over the other, a loop seam is formed. The circular seams may be formed in either the horizontal direction (weft) or the vertical direction (warp). The series of circular seams where each seam depends from the next seam is referred to as a wale.

Weft knitting is a method of forming a fabric in which the stitches are made from a single yarn or monofilament in a horizontal manner and the intermeshing of the stitches is performed in the cross direction, i.e., with wales perpendicular to the courses of the yarn or monofilament. Weft knitting may use only one yarn or monofilament, or may use multiple yarns or monofilaments for knitting.

Warp knitting is a method of forming a fabric in which stitches are made in a perpendicular manner from each warp yarn or monofilament along the length of the fabric and intermeshing of the stitches occurs in the longitudinal direction. In warp knitting, wales and courses are parallel. Each wale requires a yarn or monofilament, and therefore, many ends of the yarn or monofilament are fed simultaneously to separate needles disposed in the cross direction.

Woven fabric refers to fabric formed by weaving. Weaving is the process of forming a fabric by interweaving the warp and weft yarns. Both the warp and weft yarns are substantially straight and parallel to each other in either the longitudinal (warp) or transverse (weft) direction.

Nonwoven fabrics are generally defined as sheet-like or web-like structures in which fibers or filaments are entangled by mechanical, thermal, or chemical means. The fibers are arranged in a sheet or web, typically in a random configuration, and then thermally bonded by mechanical bonding (e.g., by needling or hydroentanglement), or by chemical bonding by applying an adhesive to the sheet or web, or by melting the fibers or filaments to at least partially bond in the presence or absence of an adhesive.

In some embodiments, the outer layer may be treated to have Durable Water Repellency (DWR). DWR is a treatment in which a hydrophobic agent is coated, dipped or sprayed onto a fabric to render it water-resistant or hydrophobic. Preventing the fabric from becoming saturated with water avoids a reduction in the breathability of the functional layer.

Functional layer

The term "functional layer" refers to a material comprising at least one waterproof and water vapor permeable membrane.

The functional layer may be a film or a laminate comprising a film. The functional layer is considered to have water repellent properties in compliance with the requirements specified in DIN EN 343(2010), i.e. in the case of liquid water resistance (Wp) of 8000Pa or more according to the liquid water resistance test of EN 20811 (1992) against hydrostatic pressure.

The functional layer is tested for its water vapour permeability, as defined in EN ISO 15496, also known as the "cup test". Mixing 20cm x 20cm or round

Is placed on a container containing water and covered with a water vapor permeable and water resistant film. A cup containing potassium acetate and covered by the same film was then placed over the sample. The water vapor passed through the functional layer into the cup and was then determined to increase its weight. If the water vapor permeability is greater than or equal to 0.01g/(Pa m)²h) The functional layer is considered to be water vapor permeable or breathable. If the desired sample size is not available, the measurement can be performed using a smaller sample using a smaller cup containing half the amount of potassium acetate specified in the standard, i.e. 50 grams instead of 100 grams, mixed with 15.6 grams of water. The terms "water vapor permeability" and "breathability" are used interchangeably herein.

According to one embodiment, the functional layer comprises at least one of: expanded polytetrafluoroethylene (ePTFE), Polyurethane (PU), Polyester (PES) and copolyetheresters, polyethers, Polyamides (PA), copolyetheramides and polyacrylates, and other suitable thermoplastic and elastomeric films. The functional layer may be made of a fluoropolymer, in particular of microporous expanded polytetrafluoroethylene (ePTFE).

The microporous polytetrafluoroethylene functional layer may be an expanded polytetrafluoroethylene membrane as taught in US 3,953,566 and US 4,187,390. Such expanded polytetrafluoroethylene films exist under the tradename Teflon @

The fabric was obtained from w.l. gore and congress incorporated (w.l. gore and Associates). The water vapor permeable and waterproof membrane may be constructed of a polyurethane coated microporous expanded polytetrafluoroethylene membrane made substantially in accordance with the teachings of U.S. Pat. Nos. 4,194,041 and 4,942,214 assigned to W.L. gore and Dojindo, Inc., of Elkton, Maryland. Another support material, such as a knit, may be present on one side of the membrane.

In some embodiments, the functional layer comprises a laminate of a film and a support layer, or a laminate of a film sandwiched between two support layers. The support layer may be a fabric layer as discussed above with respect to the outer layer.

The functional layer may be present in the overall length of the upper. Alternatively, the functional layer may be present only in the area of the upper surrounding the foot of the wearer, for example from the bottom of the foot to the area surrounding the ankle of the wearer.

A first portion of the functional layer is attached to the inner layer and a second portion of the functional layer is attached to the edge layer. As described with respect to the upper, the functional layer may be attached to the inner layer and/or the edge layer by lamination using a heat-adhesive glue.

Inner layer

The inner layer of the water vapor permeable and waterproof footwear may be made of an insulating/heat insulating material. Examples are organic or synthetic materials that include a surface facing at least one pile or loop on the interior of the article of footwear.

The term "pile" refers to a material or fabric comprising raised surfaces of upstanding loops or upstanding strands of yarn or fiber. These upstanding coils or strands may be cut, uncut, knotted, tufted, twisted or braided.

The organic material comprises natural leather with intact wool or cashmere facing towards the inside of the footwear. Examples include sheepskin, lamb skin, goat skin or any other kind of animal skin still comprising hair or wool.

Organic materials also include textile fabrics made from organic fibers, such as natural fibers of animal or vegetable origin, which include at least one surface of pile or loop. Such a fabric may be made of a horizontal warp and weft fabric, with vertical yarns or fibers attached, for example, by knuckles. Natural fibres of animal origin may comprise wool from, for example, sheep, goats or rabbits, such as alpaca, merino, angora and cashmere.

Synthetic materials include textile fabrics, such as artificial fur. Artificial pelts are usually made from two different yarns, such as cotton and synthetic polymers. In embodiments, cotton is used as the horizontal warp and weft fabric, while the synthetic polymer forms a pile or loop.

Various synthetic polymers may be used, including acrylic and denatured acrylic polymers.

In some embodiments, the thickness of the inner layer is 3 to 30mm, 10 to 30mm, or 15 to 30 mm.

Edge layer

The edge layer may be any kind of flexible material that can be easily attached to the inner layer and the insole. The edge layer may be a woven fabric, such as a woven, non-woven or knitted fabric. Examples of these fabrics are discussed in more detail in the context of the outer layer. In an embodiment, the edge layer is a nonwoven fabric.

The width of the edge layer may be 5 to 15mm, optionally 7 to 13mm or 9 to 11 mm.

In a preferred embodiment, the edge layer is a felt. Felts are made by matting fibers, compressing and then pressing them together. The most common manufacturing processes are wet felting and needle felting. In wet felting, hot water is applied to the fiber layer while repeated agitation and compression causes the fibers to weave together. Only certain types of fibers can be successfully wet felted. An example is animal hair.

Needle felting uses special needles, including hooks. These hooks move the fibers and weave them together. The fibers may be natural fibers, synthetic fibers or mixtures thereof.

In some embodiments, the edge layer comprises felt.

Typically, the thickness of the felt is 0.4mm to 2mm, 0.5 to 1.8mm or 0.8 to 1.5 mm.

The border layer is attached to the inner layer and the insole. In some embodiments, the attachment is a seam. The seam may be provided, for example, by zig-zag stitching or by Strobel stitching. The seam may have a stitch width of 5mm to 7mm and/or the stitch density may be 4 to 5 stitches per cm of material.

Cushion layer

The backing layer may comprise a backing adhesive and/or a fusible backing material.

The cushion layer may comprise or may consist of a solid polymer resin.

The backing layer may comprise a support material coated with a polymer resin, a fusible liner material and/or a polymer film, which preferably has a lower melting point than the support material. The support material may comprise a woven fabric, such as a woven fabric, a non-woven fabric or a knitted fabric. The woven fabric may comprise polyester.

The gasket adhesive, fusible gasket material and/or solid polymer resin need not be thermoplastic, but may be a cured material capable of flowing prior to solidification and solidifying upon solidification. However, thermoplastic materials are preferred.

The gasket adhesive may be polyurethane, polyethylene, silicone, epoxy, acrylic, latex or a thermoplastic elastomer or rubber.

In some embodiments, the cushion layer comprises a polyester knit coated with a polyurethane film.

The backing layer may be heated, for example, by microwave radiation or in an IR flash activator (infrared heater) or thermal tunnel. Upon heating the cushion layer, at least the coated polymeric resin is rendered tacky or molten if a coated support material is used. The padding layer is then placed over the border layer and insole board and attached by applying pressure.

If the insole is waterproof, a padding layer is applied to cover at least the area of the edge layer and the seam between the edge layer and the insole to provide a waterproof seal with the functional layer to the interior of the footwear. If the insole is not waterproof, a padding layer is applied to cover the area of the border layer, the seam and the entire insole.

Such a waterproof seal prevents water from not only entering the interior of the footwear, but also from being absorbed into the interior layer.

Inner sole

The insole of the footwear may comprise any nonwoven, fiberboard or mesh material suitable as an insole material.

In some embodiments, a nonwoven or felt is used as the insole. A felt is a textile material comprising fibres that have been matted, compressed and pressed, which is further described in the context of the edge layer. Nonwoven materials suitable for use as an insole are further described above with respect to the outer layer.

The insole, such as a nonwoven insole or a felt insole, may comprise synthetic and/or natural fibers.

Shoe last board

The last plate may be made of any suitable material, such as bonded leather, synthetic fabric, thermoplastic polymer, fiberboard or rubber.

Sole of shoe

The sole may be made of a single piece that is attached by adhesive or cement. To obtain high wear resistance and sole stability, the material may comprise, for example, rubber or a polymer, such as polyurethane. In some embodiments, the sole is made of leather, such as cowhide.

Alternatively, the sole may be made of a polymeric material, such as polyurethane, Thermoplastic Polyurethane (TPU), or Ethylene Vinyl Acetate (EVA), and injected onto the bottom of the footwear structure assembled on the last.

Shoe-pad

At the end of the manufacturing process, the insole is placed into the article of footwear. The insole may be made of a material that cushions the wearer's foot and provides better fit and further thermal insulation.

In some embodiments, the insole may comprise two layers of material. The bottom layer facing the sole may be made of, for example, Polyurethane (PU) foam, Ethylene Vinyl Acetate (EVA), Polyethylene (PE) foam. The upper layer facing the wearer's foot may be made of any of the materials disclosed with respect to the inner layer. In some embodiments, the upper layer may be made of the same material as the inner layer of the article of footwear.

The footbed may be removable and not attached to the insole board and/or inner layer.

Fig. 1 shows a water vapor permeable and waterproof footwear having an upper, an insole (5), a padding layer (6), a last plate (7) and a sole (8). During the manufacturing process, the edge layer (4) is attached to the inner layer (3) in the area corresponding to the bottom edge of the last. The edge layer (4) is also attached to the insole (5). The functional layer (2) is drawn around the last and attached on the surface of the edge layer (4) facing the sole (8).

On the surfaces of the insole (5) and the functional layer (2) facing the sole (8), a padding layer (6) is attached, which seals the interior of the footwear from the effects of water or moisture. Further, a last plate (7) is attached to the padding layer (6).

In the lasting process, the outer layer (1) is drawn around the last and attached to the last plate (7) before the sole (8) is glued or injected onto the article of footwear.

Finally, the insole may be inserted into the article of footwear (not shown in fig. 1).

Claims (12)

1. A breathable and waterproof footwear article having a sole and a sole,

it comprises an upper, a liner layer, an insole and a sole;

characterized in that the upper comprises an outer layer facing the outside of the footwear, an inner layer facing the inside of the footwear, a functional layer arranged between them and a rim layer attached to the inner layer and to the insole;

wherein a first portion of the functional layer is attached to the inner layer and a second portion of the functional layer is attached to the edge layer; and

wherein the padding layer is attached to the functional layer and the insole.

2. The breathable, waterproof footwear article of claim 1, wherein a last plate is attached to the padding layer.

3. The breathable, waterproof footwear article according to claim 1 or 2, characterized in that the inner layer comprises an organic or synthetic material comprising at least one surface of pile or loop.

4. The breathable, waterproof footwear article of claim 3, wherein the inner layer is sheepskin; or a woven fabric made of organic and/or synthetic fibers.

5. The breathable, waterproof footwear article of claim 4, wherein the inner layer is a vellum.

6. The breathable, waterproof footwear article according to claim 1, characterized in that the outer layer is made of leather or synthetic leather.

7. The breathable, waterproof footwear article according to claim 1, wherein said functional layer comprises one of expanded polytetrafluoroethylene (ePTFE), Polyurethane (PU), Polyester (PES), and copolyetheresters, polyethers, Polyamides (PA), copolyetheramides, and polyacrylates.

8. The breathable, waterproof footwear article of claim 1, wherein the edge layer comprises a nonwoven fabric.

9. The breathable, waterproof footwear article of claim 1, wherein the width of the edge layer is 5 to 15 mm.

10. The breathable, waterproof footwear article of claim 1, wherein the edge layer is attached to the inner layer and the insole by seams.

11. The breathable, waterproof footwear article of claim 1, wherein the footwear article is a boot or a slipper.

12. The breathable, waterproof footwear article of claim 1, wherein the footwear article is an ugg boot.

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