Patent Application
20220132992
The present disclosure relates generally to articles of footwear, and more particularly, to uppers for articles of footwear.
This section provides background information related to the present disclosure, which is not necessarily prior art.
Articles of footwear conventionally include an upper and a sole structure. A bottom portion of the upper, proximate to a bottom surface of the foot, attaches to the sole structure. Sole structures generally include a layered arrangement extending between an outsole providing abrasion-resistance and traction with a ground surface and a midsole disposed between the outsole and the upper for providing cushioning for the foot.
The upper may be formed from any suitable material(s) to receive, secure, and support a foot on the sole structure. In conventional articles of footwear, the upper is formed of one or more panels of the materials, which are stitched together to enclose an interior void. Here, different parts of the upper may be formed of different materials to provide desired characteristics. For instance, one or more of the panels may be formed of a breathable material to improve ventilation and comfort, while other panels are formed of more durable materials to provide strength and durability.
The upper may cooperate with laces, straps, or other fasteners to adjust the fit of the upper around the foot. Accordingly, provisions must be made within the panels forming the upper to accommodate routing of the fasteners along the upper. For example, the panels of the upper may be provided with one or more eyelets or guides for routing the laces along the upper. Additionally, to improve fit and maximize comfort, the panels must be conformed to the contours of a foot, and are typically provided with one or more features for facilitating ventilation.
The drawings described herein are for illustrative purposes only of selected configurations and are not intended to limit the scope of the present disclosure.
Corresponding reference numerals indicate corresponding parts throughout the drawings.
Example configurations will now be described more fully with reference to the accompanying drawings. Example configurations are provided so that this disclosure will be thorough, and will fully convey the scope of the disclosure to those of ordinary skill in the art. Specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of configurations of the present disclosure. It will be apparent to those of ordinary skill in the art that specific details need not be employed, that example configurations may be embodied in many different forms, and that the specific details and the example configurations should not be construed to limit the scope of the disclosure.
The terminology used herein is for the purpose of describing particular exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “comprising,” “including,” and “having,” are inclusive and therefore specify the presence of features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. Additional or alternative steps may be employed.
When an element or layer is referred to as being “on,” “engaged to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly on, engaged, connected, attached, or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly engaged to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
The terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections. These elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example configurations.
Some aspects of the disclosure include an upper for an article of footwear. The upper includes a carcass layer including an interior liner defining an interior void of the upper and an exterior liner joined to the interior liner to define a plurality of resilient pads protruding from an exterior surface of the upper. Aspects of the disclosure may include one or more of the following optional features.
In some examples, the upper includes an outer shell attached to the exterior liner of the carcass layer and including a plurality of openings each configured to receive a respective one of the resilient pads therethrough. Here, each of the resilient pads includes a distal end surface defining a first portion of a ball control surface and the outer shell defines a second portion of the ball control surface.
In some implementations, each of the resilient pads includes a compressible material enclosed between the interior liner and the exterior liner. In some examples, the compressible material includes a compressible fluid. Optionally, each of the resilient pads includes a tensile element disposed therein.
In some configurations, the plurality of resilient pads includes one or more resilient pads in a toe portion of the upper, one or more resilient pads in a ball portion of the upper, and one or more resilient pads in a mid-foot region of the upper. Optionally, the plurality of resilient pads includes at least one lateral pad disposed on a lateral side of the upper, at least one medial pad disposed on a medial side of the upper, and at least one throat pad disposed on a throat portion of the upper.
In some examples, each of the interior liner and the exterior liner includes a polymeric film material. In some configurations, the interior liner includes a first material and the exterior liner includes a second material that is different than the first material.
Another aspect of the disclosure relates to upper for an article of footwear. Here, the upper includes a carcass layer including an interior liner defining an interior surface of the upper and an exterior liner defining an exterior surface of the upper. The exterior liner is joined to the interior liner along a web area to form a plurality of resilient pads on the exterior surface of the upper.
In some examples, the upper includes an outer shell attached to the exterior liner of the carcass layer and including a plurality of openings each configured to receive a respective one of the resilient pads therethrough. Here, each of the resilient pads may include a distal end surface defining a first portion of a ball control surface and the outer shell defines a second portion of the ball control surface.
In some examples, each of the resilient pads includes a compressible material enclosed between the interior liner and the exterior liner. Optionally, the compressible material includes a compressible fluid. In some configurations, each of the resilient pads includes a tensile element disposed therein.
In some implementations, the plurality of resilient pads includes one or more resilient pads in a toe portion of the upper, one or more resilient pads in a ball portion of the upper, and one or more resilient pads in a mid-foot region of the upper. Optionally, the plurality of resilient pads includes at least one lateral pad disposed on a lateral side of the upper, at least one medial pad disposed on a medial side of the upper, and at least one toe pad disposed on a toe portion of the upper.
In some examples, each of the interior liner and the exterior liner includes a polymeric film material. In some configurations, the interior liner includes a first material and the exterior liner includes a second material that is different than the first material.
The details of one or more implementations of the disclosure are set forth in the accompanying drawings and the description below. Other aspects, features, and advantages will be apparent from the description, the drawings, and the claims.
Referring to
The article of footwear 10 may be divided into one or more regions along the longitudinal axis A10. The regions may include a forefoot region 20, a mid-foot region 22, and a heel region 24. The forefoot region 20 may correspond with toes and joints connecting metatarsal bones with phalanx bones of a foot. The mid-foot region 22 may correspond with an arch area of the foot, and the heel region 24 may correspond with rear regions of the foot, including a calcaneus bone.
The upper 100 forms an enclosure having a plurality of components that cooperate to define an interior void 102 and an ankle opening 104, which cooperate to receive and secure a foot for support on the sole structure 200. For example, the forefoot region 20 of the upper 100 includes a toe cap 106 disposed at the anterior end 12 and configured to cover the toes of the foot. The toe cap 106 extends over the forefoot region 20 from the lateral side 16 to the medial side 18. In the mid-foot region 22, the upper includes 100 a pair of quarter panels 108 extending from the toe cap 106 on opposite sides of the interior void 102. Accordingly, a first quarter panel 108 extends along the lateral side 16 in the mid-foot region 22 and a second quarter panel 108 extends along the medial side 18 in the mid-foot region 22.
A throat 110 extends across the top of the upper 100 and defines an instep region extending between the quarter panels 108, from a posterior end of the toe cap 106 to an anterior end of the ankle opening 104. In the illustrated example, the throat 110 is formed as an independent component (i.e., a tongue) that is moveable relative to the quarter panels 108. However, in other examples, the throat 110 may be integrally formed with the quarter panels 108, such that the upper 100 extends continuously over the instep of the foot. The throat 110 may include a fastening element, such as laces or straps, for adjusting a fit of the upper 100 around the foot. As best shown in
The heel region 24 of the upper 100 includes a pair of heel side panels 112 extending through the heel region 24 along the lateral and medial sides 16, 18 of the ankle opening 104. Each of the heel side panels 112 extends from a posterior end of a respective one of the quarter panels 108. A heel counter 114 wraps around the posterior end 14 of the footwear 10 and connects the heel side panels 112 to each other. Uppermost edges of the throat 110, the heel side panels 112, and the heel counter 114 cooperate to form a collar, which defines the ankle opening 104 of the interior void 102.
The foregoing components and/or portions of the upper 100 cooperate to form an interior surface 116 defining the interior void 102 of the upper 100, and an exterior surface 118 formed on an opposite side from the interior surface 116. As described in greater detail below, the upper 100 may be formed from one or more materials that are joined together to form the aforementioned components or portions of the upper 100. The example upper 100 may be formed from a combination of one or more substantially inelastic or non-stretchable materials and one or more substantially elastic or stretchable materials disposed in different regions of the upper 100 to facilitate movement of the article of footwear 10 between the tightened state and the loosened state. The one or more elastic materials may include any combination of one or more elastic fabrics such as, without limitation, spandex, elastane, rubber, or neoprene. The one or more inelastic materials may include any combination of one or more of thermoplastic polyurethanes, nylon, leather, vinyl, or another material/fabric that does not impart properties of elasticity.
With reference to
Each of the resilient pads 124a-124h includes a peripheral wall 130a-130h defining a peripheral profile of the resilient pad 124a-124h, and a distal end surface 132a-132h that protrudes from the web area 126 of the upper 100. Here, the distal end surfaces 132a-132h of each of the resilient pads 124a-124h cooperate to define a primary ball control surface 118a and the web area 126 provides a secondary ball control surface 118b that is recessed from the primary ball control surface 118a. Thus, in use, a ball may initially contact the primary ball control surface 118a collectively defined by one or more of the distal end surfaces 132a-132h. As the one or more resilient pads 124a-124h compress, the ball may engage the secondary ball control surface 118b formed by the web area 126.
The exterior surface 118, collectively defined by the primary ball control surface 118a and the secondary ball control surface 118b, may include one or more gripping features for maximizing engagement with a ball during use. For example, the exterior surface 118 may be formed of or include materials having a relatively high coefficient of friction. Additionally or alternatively, the exterior surface 118 may include physical gripping features 134. In the illustrated example, the exterior surface 118 is embossed to form a plurality of ribs 134 arranged in a checkered pattern. For example, the gripping features 134 include a first plurality of squares defined by ribs 134 extending in a first direction (e.g., vertical) and a second plurality of squares defined by ribs 134 extending in a second direction (e.g. horizontal) transverse to the first direction. The embossed pattern of ribs 134 is formed continuously over the entire exterior surface 118. Accordingly, as discussed in greater detail below, the web area 126 and the resilient pads 124 may be embossed with a continuous pattern of the gripping features 134.
With continued reference to
With reference to
With continued reference to
With continued reference to
Referring to
As used herein, the term “barrier layer” (e.g., barrier layers 142) encompasses both monolayer and multilayer films. In some embodiments, one or both of the barrier layers 142 are each produced (e.g., thermoformed or blow molded) from a monolayer film (a single layer). In other embodiments, one or both of the barrier layers 142 are each produced (e.g., thermoformed or blow molded) from a multilayer film (multiple sublayers). In either aspect, each layer or sublayer can have a film thickness ranging from about 0.2 micrometers to about be about 1 millimeter. In further embodiments, the film thickness for each layer or sublayer can range from about 0.5 micrometers to about 500 micrometers. In yet further embodiments, the film thickness for each layer or sublayer can range from about 1 micrometer to about 100 micrometers.
One or both of the barrier layers 142 can independently be transparent, translucent, and/or opaque. As used herein, the term “transparent” for a barrier layer and/or a fluid-filled chamber means that light passes through the barrier layer in substantially straight lines and a viewer can see through the barrier layer. In comparison, for an opaque barrier layer, light does not pass through the barrier layer and one cannot see clearly through the barrier layer at all. A translucent barrier layer falls between a transparent barrier layer and an opaque barrier layer, in that light passes through a translucent layer but some of the light is scattered so that a viewer cannot see clearly through the layer.
The barrier layers 142 can each be produced from an elastomeric material that includes one or more thermoplastic polymers and/or one or more cross-linkable polymers. In an aspect, the elastomeric material can include one or more thermoplastic elastomeric materials, such as one or more thermoplastic polyurethane (TPU) copolymers, one or more ethylene-vinyl alcohol (EVOH) copolymers, and the like.
As used herein, “polyurethane” refers to a copolymer (including oligomers) that contains a urethane group (—N(C═O)O—). These polyurethanes can contain additional groups such as ester, ether, urea, allophanate, biuret, carbodiimide, oxazolidinyl, isocyanurate, uretdione, carbonate, and the like, in addition to urethane groups. In an aspect, one or more of the polyurethanes can be produced by polymerizing one or more isocyanates with one or more polyols to produce copolymer chains having (—N(C═O)O—) linkages.
Examples of suitable isocyanates for producing the polyurethane copolymer chains include diisocyanates, such as aromatic diisocyanates, aliphatic diisocyanates, and combinations thereof. Examples of suitable aromatic diisocyanates include toluene diisocyanate (TDI), TDI adducts with trimethyloylpropane (TMP), methylene diphenyl diisocyanate (MDI), xylene diisocyanate (XDI), tetramethylxylylene diisocyanate (TMXDI), hydrogenated xylene diisocyanate (HXDI), naphthalene 1,5-diisocyanate (NDI), 1,5-tetrahydronaphthalene diisocyanate, para-phenylene diisocyanate (PPDI), 3,3′-dimethyldiphenyl-4, 4′-diisocyanate (DDDI), 4,4′-dibenzyl diisocyanate (DBDI), 4-chloro-1,3-phenylene diisocyanate, and combinations thereof. In some embodiments, the copolymer chains are substantially free of aromatic groups.
In particular aspects, the polyurethane polymer chains are produced from diisocynates including HMDI, TDI, MDI, H12 aliphatics, and combinations thereof. In an aspect, the thermoplastic TPU can include polyester-based TPU, polyether-based TPU, polycaprolactone-based TPU, polycarbonate-based TPU, polysiloxane-based TPU, or combinations thereof.
In another aspect, the polymeric layer can be formed of one or more of the following: EVOH copolymers, poly(vinyl chloride), polyvinylidene polymers and copolymers (e.g., polyvinylidene chloride), polyamides (e.g., amorphous polyamides), amide-based copolymers, acrylonitrile polymers (e.g., acrylonitrile-methyl acrylate copolymers), polyethylene terephthalate, polyether imides, polyacrylic imides, and other polymeric materials known to have relatively low gas transmission rates. Blends of these materials, as well as with the TPU copolymers described herein and optionally including combinations of polyimides and crystalline polymers, are also suitable.
The barrier layers 142 may include two or more sublayers (multilayer film) such as shown in Mitchell et al., U.S. Pat. No. 5,713,141 and Mitchell et al., U.S. Pat. No. 5,952,065, the disclosures of which are incorporated by reference in their entireties. In embodiments where the barrier layers 142 include two or more sublayers, examples of suitable multilayer films include microlayer films, such as those disclosed in Bonk et al., U.S. Pat. No. 6,582,786, which is incorporated by reference in its entirety. In further embodiments, the barrier layers 142 may each independently include alternating sublayers of one or more TPU copolymer materials and one or more EVOH copolymer materials, where the total number of sublayers in each of the barrier layers 142 includes at least four (4) sublayers, at least ten (10) sublayers, at least twenty (20) sublayers, at least forty (40) sublayers, and/or at least sixty (60) sublayers.
The cushioning elements 140a-140h can be produced from the barrier layers 142 using any suitable technique, such as thermoforming (e.g. vacuum thermoforming), blow molding, extrusion, injection molding, vacuum molding, rotary molding, transfer molding, pressure forming, heat sealing, casting, low-pressure casting, spin casting, reaction injection molding, radio frequency (RF) welding, and the like. In an aspect, the barrier layers 142 can be produced by co-extrusion followed by vacuum thermoforming to form the profile of the cushioning elements 140a-140h, which can optionally include one or more valves (e.g., one way valves) that allows the cushioning elements 140a-140h to be filled with the fluid (e.g., gas).
The cushioning elements 140a-140h desirably have a low gas transmission rate to preserve their retained gas pressure. In some embodiments, the cushioning elements 140a-140h have a gas transmission rate for nitrogen gas that is at least about ten (10) times lower than a nitrogen gas transmission rate for a butyl rubber layer of substantially the same dimensions. In an aspect, cushioning elements 140a-140h have a nitrogen gas transmission rate of 15 cubic-centimeter/square-meter·atmosphere·day (cm3/m2·atm·day) or less for an average film thickness of 500 micrometers (based on thicknesses of barrier layers 142). In further aspects, the transmission rate is 10 cm3/m2·atm·day or less, 5 cm3/m2·atm·day or less, or 1 cm3/m2·atm·day or less.
In the illustrated example, the interior surfaces of the barrier layers 142 of the cushioning elements 140a-140h are joined together at discrete locations to form an outer peripheral seam defining shapes of the cushioning elements 140a-140h. The barrier layers 142 are spaced apart from each other to define respective interior voids 144 of each of the cushioning elements 140a-140h. Optionally, the interior voids 144 of the cushioning elements 140a-140h may receive a tensile element 146 therein. Each tensile element 146 may include a series of tensile strands 148 extending between an upper tensile sheet 150 and a lower tensile sheet 150. The upper tensile sheet 150 may be attached to the first barrier layer 142 while the lower tensile sheet 150 may be attached to the second barrier layer 142. In this manner, when the cushioning element 140a-140h receives a pressurized fluid, the tensile strands 148 of the tensile elements 146 are placed in tension. Because the upper tensile sheet 150 is attached to the first barrier layer 142 and the lower tensile sheet 150 is attached to the second barrier layer 142, the tensile strands 148 retain a desired shape of the respective cushioning element 140a-140h when the pressurized fluid is injected into the interior void 144.
While
Where the resilient pads 124a-124h include compressible fluids (e.g., the resilient pads 124a-124h are filled with air), either in the form of direct pressurization or by including independently formed fluid-filled chambers 140a-140h, the resilient pads 124a-124h can be provided in a fluid-filled (e.g., as provided in footwear 10) or in an unfilled state. The resilient pads 124a-124h can be filled to include any suitable fluid, such as a gas or liquid. In an aspect, the gas can include air, nitrogen (N2), or any other suitable gas. The fluid provided to the resilient pads 124a-124h can result in the resilient pads 124a-124h being pressurized. Alternatively, the fluid provided to the resilient pads 124a-124h can be at atmospheric pressure such that the resilient pads 124a-124h are not pressurized but, rather, simply contain a volume of fluid at atmospheric pressure.
In the illustrated example, the interior voids of the resilient pads 124a-124h may include the same or different pressures from each other. For instance, a first pressure within the interior void of one of the resilient pads 124a-124h may be less than a second pressure within a different one of the resilient pads 124a-124h when the carcass layer 120 is in an uncompressed (i.e., natural) state. Additionally or alternatively, the resilient pads 124a-124h may be formed with different thicknesses. The combination of different pressures and/or thicknesses provide zonal performance characteristics along the exterior ball control surface 118. For example, the toe pads 124a, 124d and/or the forefoot pads 124b, 124e may have a greater pressure and/or lesser thickness than the mid-foot pads 124c, 124f to provide a greater energy return while kicking a ball with the toe or forefoot of the foot. Conversely, the mid-foot pads 124c, 124f may be tuned with a lower pressure and/or greater thickness than the toe pads 124a, 124d and/or the forefoot pads 124b, 124e to provide less energy return (i.e., damping) when handling or receiving a passed ball.
With particular reference to
The upper 100a of the article of footwear 10a shown in
With reference to
Optionally, the groups of the resilient pads 124i-124n of the upper 100 may also be arranged to form segmented rows 125a, 125b of the resilient pads 124i-124n extending continuously around a periphery of the upper 100. For example, the upper 100a may include a first row 125a of the resilient pads 124i-124n extending from the ball portion 20B on the lateral side 16 and around the anterior end 12 to the mid-foot region 22 on the medial side 18. As shown in
In some examples, corresponding pads 124i-124n of each row 125a, 125b may be vertically aligned with each other. For example, the medial mid-foot pads 124n of the first row 125a are vertically aligned with the medial-mid-foot pads 124n of the second row 125b. More specifically, ends of the corresponding pads 124i-124n of the first and second rows 125a, 125b may be aligned with each other such that the web area 126a extends continuously through and intersects the upper and lower rows 125a, 125b.
With reference to
In a first step, the components for forming the carcass layer 120 are provided to the press 300. Here, the inner liner 136 and the outer liner 138a each includes a first portion 136a, 138a for forming a boot including the toe cap 106, quarter panels 108, heel side panels 112, and heel counter 114 of the upper 100. Respective second portions 136b, 138b of the liners 136, 138 are configured to form the throat or tongue 110 of the upper 100. In this example, the upper 100 is formed with a plurality of the cushioning elements 140a-140h, which are positioned between the liners 136, 138 within the press 300 in areas corresponding to the desired locations of the resilient pads 124a-124h of the finished upper 100. The interior surfaces of the liners 136, 138 may be provided with a thermo adhesive film or coating configured to join or attach the interior surface of the inner liner 136 to the inner surface of the exterior liner 138. With the components 136, 138, 140a-140h of the carcass layer 120 arranged in the press 300, the press 300 is moved to the closed position and the components 136, 138, 140a-140h are subjected to heat and/or pressure to join the liners 136, 138 together with the cushioning elements 140a-140h disposed therebetween.
At
As shown in
Referring now to
The system 400 includes a mold 402 and a vacuum source 404. As shown, the mold 402 includes an opposing pair of platens 406a, 406b which cooperate with each other to define a mold chamber 408. As shown, a first one of the platens 406a includes geometries for forming geometries of the resilient pads 124 in the exterior liner 138 of the carcass layer, while the second platen 406b is provided with a planar mold surface 407 corresponding to the flat inner liner 136. However, in other examples, geometries of both of the platens 406a, 406b may include mold cavities 416 and/or geometries of one of the platens 406a, 406b may be different from geometries of the other one of the platens 406a, 406b to impart different characteristics and geometries to the carcass layer 120b.
With reference to
As shown in
With continued reference to
With continued reference to
In the illustrated example, the cavity wall 414 includes a peripheral portion 414a and one or more interior portions 414b. The peripheral portion 414a of the cavity wall 414 is spaced inwardly from the chamber wall 412 to define a transitional cavity 417 between the chamber wall 412 and the cavity wall 414. The distal end 436 of the peripheral portion 414a is continuously formed and is configured to form the peripheral seam 304 around the perimeter of the formed carcass layer 120b, as described in greater detail below. Accordingly, a path along which a length of the peripheral portion 414a extends corresponds to a desired peripheral shape of the carcass layer 120b.
The interior portions 414b of the cavity wall 414 extend inwardly (i.e., in an opposite direction from the chamber wall 412) from the peripheral portion 414a of the cavity wall 414, and cooperate with the peripheral portion 414a to define the profiles of individual ones of the mold cavities 416. As discussed below, the interior portions 414b of the cavity wall 414 correspond to the desired locations of interior bonds forming the web area 126 of the carcass layer 120b. Accordingly, the arrangement (i.e., size, shape, location) of the interior portions 414b is selected based on desired shapes of the resilient pads 124 of the carcass layer 120b.
In some examples, the distal end 436 of the interior portions 414b of the cavity wall 414 extend continuously between the peripheral portion 414a of the cavity wall 414, whereby the resulting web area 126 also extends continuously around the resilient pads 124. Thus, adjacent ones of the resilient pads 124 defined by the respective interior portions 414b of the cavity wall 414 may be fluidly isolated from each other after the carcass layer 120b is formed. In some examples, the interior portions 414b of the cavity wall 414 may be discontinuous, or include one or more notches formed in the distal end 436 that extend continuously across the entire width of the interior portion 414b. These notches allow fluid communication between adjacent mold cavities 416 when the platens 406a, 406b of the mold 402 are in a closed position, and result in the formation of conduits that extend through the web area 126 and fluidly connect adjacent ones of the resilient pads 124 to each other.
The cavity walls 414 of each platen 406a, 406b are operable to bond the liners 136, 138 of the carcass layer 120b together at discrete locations to define the resilient pads 124. Particularly, the distal ends 436 of the cavity walls 414 provide energy E to the liners 136, 138 (i.e., barrier layers) to bond the liners 136, 138 to each other when the liners 136, 138 are compressed between opposing distal ends 436 of respective platens 406a, 406b. In the illustrated example, the distal ends 436 of the cavity walls 414 are configured for radio frequency (RF) welding such that when the liners 136, 138 are compressed between the distal ends 436 of cavity wall 414, high-frequency radio waves are supplied to the liners 136, 138 and the liners 136, 138 are welded together between the distal ends 436 to form the web area 126. In other examples, the cavity walls 414 may be configured for thermally bonding (i.e., melding) the liners 136, 138 together with each other. For example, the cavity walls 414 may have one or more elements for heating the distal ends 436 above a desired temperature for melding material(s) of the liners 136, 138 together.
With reference to
As described in greater detail below, a gasket 502 is configured to be disposed between a distal end 428 of the chamber wall 412 of the first platen 406a and the mold surface 407 of the second platen 406b when the mold 402 is moved to a closed position. Accordingly, a length of the gasket 502 extends along a path corresponding to a length of the distal end 428 of the chamber wall 412. The gasket 502 includes a pair of sealing surfaces 508 formed on opposite sides of the gasket 502, whereby a distance from one sealing surface 508 to the other sealing surface 508 defines a thickness T502 of the gasket 502. The gasket 502 further includes an inner peripheral surface 510 and an outer peripheral surface 512, each extending between the sealing surfaces 508 on opposite sides of the gasket 502. One or more conduits 514 are formed through the gasket 502 from the inner peripheral surface 510 to the outer peripheral surface 512.
In an initial step, shown in
As shown in
With the first one of the sheets 500 in place atop the lower platen 406a, the gasket 502 is disposed on the sheet 500 so that a bottom one of the sealing surfaces 508 is in contact with the inner surface 504 of the first sheet 500 along the peripheral region 516. Thus, the gasket 502 is also supported on the distal end 428 of the chamber wall 412 and surrounds the inner region 518 and the transition region 520 of the first sheet 500. When the gasket 502 is in a natural, uncompressed state, the gasket 502 will have a first thickness T502 and the conduit 514 formed through the gasket 502 will be unrestricted.
With the gasket 502 in place, a second, upper sheet 500 is placed in the mold 402. As shown in
Referring now to
Referring still to
Turning now to
Here, the magnitude of the first pressure P1 determines the amount that the bottom sheet 500 is drawn into the cavity 416 of the lower platen 406a and, ultimately, the shape and pressure of the chambers 124 of the carcass layer 120. As discussed above, the sheets 500 that form the liners 136, 138 of the carcass layer 120 include an elastomeric material. Accordingly, when the first pressure P1 is provided within the cavity 416 of the first platen 406a, the sheet 500 corresponding to the exterior liner 138 is drawn into the cavities 416 by an amount corresponding to the magnitude of the first pressure P1. For example, a first pressure P1 having a greater magnitude will draw the sheets 500 farther into the mold cavities 416 by stretching the sheets 500 to a greater degree. In the example of
As the sheets 500 are drawn into the cavities 416 by the first pressure P1, fluid, such as air and/or nitrogen, flows into the space 522 between the sheets 500 through the conduit 514 formed through the gasket 502. Accordingly, a volume of the space 522 is able to increase without causing the second pressure P2 within the space 522 to decrease, thereby allowing the chambers 124 of the carcass layer 120 to be formed within the cavity 416. In the illustrated example, the conduit 514 is in communication with atmospheric pressure, whereby the second pressure P2 will remain substantially equal to atmospheric pressure as the chambers 124 are formed. However, in other examples, the conduit 514 may be in communication with a positive pressure source, such as a pump (not shown), whereby the pressure within the space 522 is greater than atmospheric pressure.
With continued reference to
Referring to
As shown in
At
Upon contraction, the fluid within the interior voids of the resilient pads 124 is compressed by the sheets 500, such that the pressure of the fluid may increase from the second pressure P2 to a third pressure P3. The magnitude of the pressure increase in the resilient pad 124 is directly related to the strain imparted on the sheet 500 corresponding to the exterior liner 138 by the first pressure P1, as well as the modulus of elasticity of the material forming the sheets 500. For example, where the sheets 500 are formed of an inelastic material, the pressure increase may be negligible as the sheets 500 remain in the stretched state upon release of the negative pressure. However, for materials having a relatively low modulus of elasticity, applying a greater first pressure P1 to the sheets 500 causes increased strain in the elastomeric material during the molding process, which results in a greater pressure increase within the interior void when the first pressure P1 is released and the material contracts.
With continued reference to
The following Clauses provide an exemplary configuration for an upper for an article of footwear and an article of footwear described above.
Clause 1: An upper for an article of footwear, the upper including a carcass layer including an interior liner defining an interior void of the upper and an exterior liner joined to the interior liner to define a plurality of resilient pads protruding from an exterior surface of the upper.
Clause 2: The upper of Clause 1, further comprising an outer shell attached to the exterior liner of the carcass layer and including a plurality of openings each configured to receive a respective one of the resilient pads therethrough.
Clause 3: The upper of Clause 2, wherein each of the resilient pads includes a distal end surface defining a first portion of a ball control surface and the outer shell defines a second portion of the ball control surface.
Clause 4: The upper of any one of Clauses 1-3, wherein each of the resilient pads includes a compressible material enclosed between the interior liner and the exterior liner.
Clause 5: The upper of Clause 4, wherein the compressible material includes a compressible fluid.
Clause 6: The upper of any one of Clauses 1-5, wherein each of the resilient pads includes a tensile element disposed therein.
Clause 7: The upper of any one of Clauses 1-6, wherein the plurality of resilient pads includes one or more resilient pads in a toe portion of the upper, one or more resilient pads in a ball portion of the upper, and one or more resilient pads in a mid-foot region of the upper.
Clause 8: The upper of any one of Clauses 1-7, wherein the plurality of resilient pads includes at least one lateral pad disposed on a lateral side of the upper, at least one medial pad disposed on a medial side of the upper, and at least one throat pad disposed on a throat portion of the upper.
Clause 9: The upper of any one of Clauses 1-8, wherein each of the interior liner and the exterior liner includes a polymeric film material.
Clause 10: The upper of any one of Clauses 1-9, wherein the interior liner includes a first material and the exterior liner includes a second material that is different than the first material.
Clause 11: An upper for an article of footwear, the upper including a carcass layer including an interior liner defining an interior surface of the upper and an exterior liner defining an exterior surface of the upper, the exterior liner joined to the interior liner along a web area to form a plurality of resilient pads on the exterior surface of the upper.
Clause 12: The upper of Clause 11, further comprising an outer shell attached to the exterior liner of the carcass layer and including a plurality of openings each configured to receive a respective one of the resilient pads therethrough.
Clause 13: The upper of Clause 12, wherein each of the resilient pads includes a distal end surface defining a first portion of a ball control surface and the outer shell defines a second portion of the ball control surface.
Clause 14: The upper of any one of Clauses 11-13, wherein each of the resilient pads includes a compressible material enclosed between the interior liner and the exterior liner.
Clause 15: The upper of Clause 14, wherein the compressible material includes a compressible fluid.
Clause 16: The upper of any one of Clauses 11-15, wherein each of the resilient pads includes a tensile element disposed therein.
Clause 17: The upper of any one of Clauses 11-16, wherein the plurality of resilient pads includes one or more resilient pads in a toe portion of the upper, one or more resilient pads in a ball portion of the upper, and one or more resilient pads in a mid-foot region of the upper.
Clause 18: The upper of any one of Clauses 11-17, wherein the plurality of resilient pads includes at least one lateral pad disposed on a lateral side of the upper, at least one medial pad disposed on a medial side of the upper, and at least one toe pad disposed on a toe portion of the upper.
Clause 19: The upper of any one of Clauses 11-18, wherein each of the interior liner and the exterior liner includes a polymeric film material.
Clause 20: The upper of any one of Clauses 11-19, wherein the interior liner includes a first material and the exterior liner includes a second material that is different than the first material.
The foregoing description has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular configuration are generally not limited to that particular configuration, but, where applicable, are interchangeable and can be used in a selected configuration, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
This application claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Application No. 63/107,499, filed on Oct. 30, 2020. The disclosure of this prior application is considered part of the disclosure of this application and is hereby incorporated by reference in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 63107499 | Oct 2020 | US |
