Reinforced slippers

Abstract

The present application relates to the technical field of slippers, and particularly relates to a reinforced slipper, which comprises an outsole, a periphery side edge of the outsole is provided with a first hot melt bonding part extending along the contour of the outsole; the outsole is provided with a foot wrapping area at one end along the length direction of the outsole; an upper is fixedly connected with the foot wrapping area of the outsole through part of the first hot melt bonding part, and the upper and the outsole jointly enclose a wearing entrance for the human foot; the upper is laminated with the first hot melt bonding part to form a second hot melt reinforcing part adjacent to the wearing entrance, the second hot melt reinforcing part starts from the joint of the edge of the wearing entrance and the first hot melt bonding part and extends along the contour direction of the outsole towards the foot wrapping area, the application forms a locally thickened hot melt reinforcing structure in the edge area of the wearing entrance with the highest risk of degumming, significantly reduces the stress concentration and fatigue damage accumulation of the bonding interface, thereby delaying or avoiding the degumming and tearing problems of the disposable slippers.

Description

Technical Field

[0001] This invention relates to the field of slipper technology, and in particular to a reinforced slipper. Background Technology

[0002] In existing disposable footwear products, the upper and outsole are generally fixed together using adhesive bonding. However, during actual walking, the foot naturally and repeatedly bends, especially when the foot bends forward. Due to the inconsistent force direction, continuous and alternating tensile and shear stresses occur between the foot's insertion point on the upper and the forefoot bending area of ​​the sole. This repeated mechanical tension keeps the adhesive layer in a high-stress cycle for extended periods, preventing stress buffering or even distribution at the bonding interface. As the number of steps accumulates, micro-fatigue cracks easily appear on the adhesive bonding surface in this area, gradually expanding into macro-peeling. Ultimately, this leads to premature delamination, tearing, or even complete separation at the insertion point and outsole connection, severely impacting product safety. Summary of the Invention

[0003] The purpose of this invention is to provide a reinforced slipper to solve the problem that in the prior art, the edge of the upper and the outsole of disposable shoes are only connected by adhesive, and the repeated alternating stress generated during walking and bending easily causes fatigue cracking of the adhesive interface.

[0004] The technical solution of this invention is: a reinforced slipper, comprising: The outsole has a first heat-fused bonding portion extending along its outline on its outer peripheral edge; one end of the outsole along its own length direction has a foot wrapping area. The upper is fixedly connected to the foot-wrapping area of ​​the outsole via a portion of the first heat-fused joint, and the upper and the outsole together form an opening for the human foot to enter. The upper is layered and laminated with the first heat-fused joint near the entrance to form a second heat-fused reinforcement. The second heat-fused reinforcement starts at the junction of the edge of the entrance and the first heat-fused joint and extends along the contour of the outsole toward the foot wrapping area.

[0005] Preferably, the outsole comprises, from top to bottom, a shoe upper layer, a lining layer, and a shoe bottom layer, which are sequentially composited. The shoe bottom layer has a flat bottom surface, the bottom surface of the first heat-fused joint is coplanar with the bottom surface of the shoe bottom layer, and an arc-shaped transition structure is formed between the first heat-fused joint and the shoe upper layer.

[0006] Preferably, the first hot-melt bonding portion is formed by hot-melting and sinking from one side of the shoe upper layer to form a plurality of first hot-melt films. The first hot-melt films have a sheet-like structure, and the bottom surface of the first hot-melt films is flush with the bottom surface of the shoe bottom layer.

[0007] Preferably, the plurality of first hot melt films are distributed in annular intervals along the contour of the first hot melt joint, and the plurality of first hot melt films are distributed in multiple annular layers in the radial direction, with the first hot melt films in two adjacent annular layers being staggered in the circumferential direction.

[0008] Preferably, a second hot melt film is formed by hot melting and sinking at the arc-shaped transition structure. The radial dimension of the second hot melt film is larger than that of the first hot melt film, and a plurality of the second hot melt films are distributed at intervals along the contour of the arc-shaped transition structure.

[0009] Preferably, the second hot-melt reinforcement extends continuously along the outer contour edge of the outsole, and the second hot-melt reinforcement has a plurality of hot-pressed weld lines distributed on the side facing the upper layer and is constructed as a grid structure, while the side facing the bottom layer is constructed as a planar structure.

[0010] Preferably, a strip-shaped protrusion is provided between adjacent hot-pressed fusion lines, and each strip-shaped protrusion extends along the width direction of the second hot-melt reinforcement portion.

[0011] Preferably, the upper layer and the upper together form an outer covering layer, the outer covering layer partially surrounds the inner lining layer, and the bottom layer is a flat and extended base structure.

[0012] Preferably, the upper portion near the opening covers both sides of the first hot-melt bond in the thickness direction, and is hot-pressed to form the second hot-melt reinforced portion.

[0013] Preferably, the shoe upper includes an upper and an outsole that are composite to each other. The outsole is disposed on the upper surface of the outsole and covers at least a portion of the foot wrapping area. The upper is connected to the top of the outsole. At least the outsole is fixedly connected to the outsole through the first heat-fused joint.

[0014] Compared with the prior art, the advantages of the present invention are: A first hot-melt bonding section is continuously extended along the edge of the outsole. Based on the fixed connection between the foot wrapping area and the upper, a second hot-melt reinforcement section is further added near the entrance, which is composed of the first hot-melt bonding section and the second hot-melt reinforcement section. The second hot-melt reinforcement section extends from the junction of the entrance edge and the bonding section along the outsole contour towards the foot wrapping area. This forms a locally thickened hot-melt reinforcement structure in the entrance edge area where the risk of delamination is highest. This not only upgrades the connection between the upper and the sole from a single interface to a composite bonding layer with stress dispersion and cushioning capabilities, but also transfers and disperses the tensile and shear stress borne by the entrance edge to a larger area of ​​the outsole contour when the foot bends. This significantly reduces stress concentration and fatigue damage accumulation at the bonding interface, thereby greatly delaying or avoiding the problem of delamination and tearing of disposable slippers. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the reinforced slipper structure described in this invention; Figure 2 This is a top view of the reinforced slippers described in this invention; Figure 3 This is a schematic diagram of the structure of the first hot-melt bond and the second hot-melt reinforcement part according to the present invention; Figure 4 This is a cross-sectional view of the arc-shaped transition structure described in this invention; Figure 5 This is a cross-sectional view of the second hot-melt reinforced part according to the present invention; Figure 6 This is a schematic diagram of the layer structure of the outer sole described in this invention; Figure 7 This is a schematic diagram of the layered structure of the shoe upper according to the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Outsole; 11. Foot wrapping area; 12. Upper layer; 13. Lining layer; 14. Insole; 2. Upper; 21. Entrance; 22. Upper; 23. Upper sole; 3. First hot-melt joint; 31. First hot-melt film; 32. Second hot-melt film; 4. Second hot-melt reinforcement; 41. Hot-pressed weld line; 42. Strip-shaped protrusion; 43. Outer covering layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0018] like Figure 1 and Figure 2 As shown, a reinforced slipper includes an outsole 1, an upper 2, a first heat-fused bonding portion 3, and a second heat-fused reinforcing portion 4. One end of the outsole 1 along its length forms a foot-wrapping area 11, which corresponds to the forefoot of the human foot and provides a corresponding support area for the fixed connection of the upper 2. The upper 2 is located above the outsole 1 and is connected to the foot-wrapping area 11 via the first heat-fused bonding portion 3. The upper 2 and the outsole 1 together form an opening 21, through which the human foot can be inserted into the reinforced slipper.

[0019] The outer peripheral edge of the outsole 1 refers to the circumferential edge region where the outsole 1 forms its outer contour in a planar projection. The first heat-fused bonding portion 3 is disposed on this outer peripheral edge and extends along the contour of the outsole 1. The first heat-fused bonding portion 3 is not required to cover the entire surface of the outsole 1, but rather serves as a heat-fused connection area for fixing the upper 2 and the outsole 1.

[0020] After the portion of the upper 2 near the entry point 21 is connected to the outsole 1 via the first heat-fused joint 3, an opening space for the human foot is maintained between the upper 2 and the outsole 1. The entry point 21 is not the entire connection area between the upper 2 and the outsole 1, but rather a foot entry channel defined by both the upper 2 and the outsole 1. After the foot is inserted, the upper 2 can cover the instep or the periphery of the foot, while the outsole 1 provides support for the sole. Thus, the connection point between the upper 2 and the outsole 1 serves both a structural fixing function and a stress-bearing area during wear.

[0021] In this embodiment, the first heat-fused bonding portion 3 extends along the outer peripheral edge of the outsole 1 and forms a basic fixed connection path at the position where the upper 2 meets the foot wrapping area 11. The heat-fused connection method enables the corresponding part of the upper 2 to be bonded to the edge area of ​​the outsole 1 without relying on other connectors that are not explicitly provided. After the first heat-fused bonding portion 3 is provided along the contour direction, when the upper 2 is pulled by the foot or bent by walking, the connection effect can be transmitted along the contour direction of the outsole 1 to the corresponding connection area, thereby forming a continuous fixed relationship between the foot wrapping area 11 and the upper 2.

[0022] The second heat-fused reinforcement 4 is provided with a first heat-fused bonding portion 3 adjacent to the entry point 21 of the upper 2, and forms a layered composite relationship with the first heat-fused bonding portion 3. The starting position of the second heat-fused reinforcement 4 is limited to the junction of the edge of the entry point 21 and the first heat-fused bonding portion 3. This junction refers to the position where the edge of the entry point 21 meets the connecting area of ​​the first heat-fused bonding portion 3 extending along the outline of the outsole 1, rather than any position on the upper 2. After starting from this junction, the second heat-fused reinforcement 4 extends along the outline of the outsole 1 towards the foot wrapping area 11, so that its reinforcement range covers the connecting transition area adjacent to the edge of the entry point 21.

[0023] The second heat-fused reinforcement 4 is not an independent reinforcing structure separate from the first heat-fused bonding part 3, but rather a composite structure formed by layering the first heat-fused bonding part 3 and the second heat-fused reinforcement part 4 near the opening 21 of the upper 2. The first heat-fused bonding part 3 constitutes the basic fixed connection between the upper 2 and the outsole 1, while the second heat-fused reinforcement part 4 forms an additional layered heat-fused connection in the junction area near the opening 21. The aforementioned descriptions of the basic connection and additional reinforcement are used to define their functions and layering relationships in the connection area, and do not require that the manufacturing process strictly follow the sequence of forming the first heat-fused bonding part 3 first and then the second heat-fused reinforcement part 4. When the human foot enters, exits, or walks, the edge of the opening 21 is subjected to tensile and shear forces. The first heat-fused bonding part 3 can maintain the basic connection between the upper 2 and the outsole 1, while the second heat-fused reinforcement part 4 can create a concentrated reinforcement area in the junction area to share the tensile and shear forces in that area.

[0024] The second heat-fused reinforcement 4 extends along the outer contour edge of the outsole 1 toward the foot-wrapping area 11. The extension direction of the second heat-fused reinforcement 4 corresponds to the contour extension direction of the first heat-fused joint 3, allowing the reinforcement position near the edge of the inlet 21 to extend from the junction toward the foot-wrapping area 11. The second heat-fused reinforcement 4 is not an isolated reinforcement block unrelated to the outer contour of the outsole 1, but rather forms a reinforcement structure along the corresponding contour area of ​​the edge of the outsole 1. Its specific extension contour can vary according to the shape of the outsole 1, the position of the foot-wrapping area 11, and the shape of the edge of the inlet 21, but the starting position remains at the junction of the edge of the inlet 21 and the first heat-fused joint 3, and the extension direction remains toward the foot-wrapping area 11.

[0025] The first heat-fused joint 3 forms the basic connection path between the upper 2 and the outsole 1. The second heat-fused reinforcement 4 extends from the junction of the edge of the entry 21 and the first heat-fused joint 3 towards the foot wrapping area 11, forming a layered reinforcement in this connection transition area. As a result, the connection areas adjacent to the edge of the entry 21 can jointly withstand the tensile and shear forces generated during wearing and walking, reducing the risk of premature separation at the connection.

[0026] Based on the overall connection relationship of the outsole 1, upper 2, foot wrapping area 11, and first heat-fused bonding part 3, the following describes the thickness layering, edge-to-bottom surface relationship, and distribution of the heat-fused film of the outsole 1. For the overall connection position between the first heat-fused bonding part 3 and the upper 2 and foot wrapping area 11, please refer to... Figure 1 and Figure 6 Corresponding part.

[0027] like Figure 2 and Figure 6 As shown, the outsole 1 comprises, from top to bottom, an upper layer 12, an inner lining layer 13, and an insole layer 14 in the thickness direction. The upper layer 12 is located at the top of the outsole 1, the inner lining layer 13 is located between the upper layer 12 and the insole layer 14, and the insole layer 14 is located at the bottom of the outsole 1 and forms the side in contact with the ground. The upper layer 12, the inner lining layer 13, and the insole layer 14 are sequentially composited to form the outsole 1, giving the outsole 1 a clear hierarchical relationship in the upper and lower directions. This hierarchical order remains unchanged regardless of the location of local heat fusion bonding, with the upper layer 12, inner lining layer 13, and insole layer 14 arranged sequentially from top to bottom.

[0028] The insole 14 has a flat bottom surface, which forms the extended base of the outsole 1 facing the ground. A flat bottom surface means that the insole 14 forms a continuous planar shape at the bottom of the outsole 1, preventing the lower part of the outsole 1 from forming a downwardly protruding local structure due to the first heat-fused joint 3. The upper layer 12, the lining layer 13, and the insole 14 can be compositely arranged according to corresponding contours, wherein the specific material type, the thickness of each layer, and the performance parameters of each layer are not limited. This embodiment is applicable as long as the composite layering of the upper layer 12, the lining layer 13, and the insole 14 is maintained from top to bottom, and the insole 14 forms a flat and extended bottom structure.

[0029] The upper 2 and the foot-wrapping area 11 of the outsole 1 are fixedly connected by a first heat-fused joint 3. In this overall connection, the first heat-fused joint 3 is located near the outer peripheral edge of the outsole 1, and the bottom surface of the first heat-fused joint 3 is coplanar with the bottom surface of the insole 14. Coplanarity means that the downward-facing side of the first heat-fused joint 3 is on the same plane as the flat bottom surface of the insole 14, rather than protruding downwards or upwards relative to the bottom surface of the insole 14 to form a distinct step. This structure allows the outsole 1 to maintain a relatively continuous bottom shape as it extends from the insole 14 to the edge heat-fused connection area.

[0030] like Figure 4 As shown, an arc-shaped transition structure is formed between the first heat-fused joint 3 and the upper layer 12. The arc-shaped transition structure is located in the connection area between the first heat-fused joint 3 and the upper layer 12, and is used to make the changes in the thickness direction and contour direction between the two form a smooth transition, rather than forming an abrupt edge connection.

[0031] like Figure 3 As shown, the first heat-fused bonding portion 3 is formed by heat-fused depression from one side of the upper layer 12, creating multiple first heat-fused films 31. Heat-fused depression refers to the heat-fused bonding structure forming corresponding recessed bonding positions from one side of the upper layer 12 towards the insole layer 14, ensuring that the heat-fused film portion is within the thickness range of the first heat-fused bonding portion 3. The first heat-fused films 31 have a sheet-like structure, with each first heat-fused film 31 forming a relatively independent heat-fused bonding position. The bottom surface of the first heat-fused film 31 is flush with the bottom surface of the insole layer 14, allowing the first heat-fused film 31 and the insole layer 14 to maintain the flat shape of the lower part of the outsole 1. The first heat-fused films 31 can be configured as multiple sheet-like films according to the outer periphery of the first heat-fused bonding portion 3. The number of films, the area of ​​each film, the spacing, and the thickness can be adjusted according to the contour range of the first heat-fused bonding portion 3, and are not limited to specific values.

[0032] Multiple first hot melt films 31 are distributed in a ring-shaped interval along the contour of the first hot melt joint 3. The ring-shaped interval distribution means that the first hot melt films 31 are arranged as multiple spaced-apart sheet-like bonding positions along the outer periphery of the outer bottom 1, rather than forming a single continuous film layer along the contour. The first hot melt films 31 are radially distributed as multiple ring-shaped layers, each ring-shaped layer arranged around the contour area of ​​the first hot melt joint 3. Radial refers to the direction from the inside to the outside or from the outside to the inside relative to the outer periphery of the outer bottom 1, while circumferential refers to the direction extending along the outer periphery of the outer bottom 1. The multiple ring-shaped layers ensure that the first hot melt films 31 are not only dispersed along the contour direction, but also form a multi-layered covering relationship within the radial width of the first hot melt joint 3.

[0033] The first hot-melt films 31 in two adjacent annular layers are staggered in the circumferential direction. This staggered arrangement means that the films in adjacent layers are not directly aligned in the same circumferential position, but rather the first hot-melt film 31 in one annular layer corresponds to the interval area between two adjacent first hot-melt films 31 in adjacent annular layers. This arrangement causes the hot-melt films in different radial layers to be staggered along the contour direction, avoiding continuous correspondence of films in the same circumferential position. Therefore, the first hot-melt bonding portion 3 can form a hot-melt bonding layout with dispersed coverage characteristics in both the circumferential and radial directions.

[0034] The first hot-melt film 31 is sheet-like and spaced in multiple places, giving the first hot-melt bonding portion 3 multiple dispersed hot-melt bonding positions. The multiple annular layers and their staggered circumferential arrangement further allow the hot-melt film to cover different areas of the first hot-melt bonding portion 3, ensuring that the bottom surface of the film is flush with the bottom surface of the shoe sole 14, while adapting the edge hot-melt bonding positions to the contour of the outsole 1. This structure does not require the first hot-melt film 31 to form a continuous, solid hot-melt layer, nor does it limit the specific number of each annular layer; the number of each layer can vary with the radial width of the first hot-melt bonding portion 3, but the circumferential staggered relationship between adjacent layers remains unchanged.

[0035] At the arc-shaped transition structure, a second hot-melt film 32 is also formed on the outsole 1. The second hot-melt film 32 is also formed by hot-melt indentation, but its location differs from that of the first hot-melt film 31. The second hot-melt film 32 corresponds to the arc-shaped transition structure between the first hot-melt joint 3 and the sole 14, while the first hot-melt film 31 is mainly distributed within the first hot-melt joint 3 itself. The radial dimension of the second hot-melt film 32 is larger than that of the first hot-melt film 31, resulting in a relatively larger single-piece film coverage area at the arc-shaped transition structure. The comparison of radial dimensions refers to the fact that the radial extension dimension of the second hot-melt film 32 on the outsole 1 is larger than the corresponding extension dimension of the first hot-melt film 31, without specifying a particular ratio between the two.

[0036] Multiple second hot melt films 32 are distributed at intervals along the contour of the arc-shaped transition structure. The second hot melt films 32 are not confused with the first hot melt film 31, nor are they required to replace the first hot melt film 31. Instead, they form a hot melt film layout corresponding to the transition area at the arc-shaped transition structure. The arc-shaped transition structure ensures a smooth connection between the first hot melt joint 3 and the shoe sole 14. The second hot melt films 32 form a local film with a larger radial dimension covering in this connection area, allowing the hot melt joint structure to adapt to the contour relationship of the transition from the first hot melt joint 3 to the shoe sole 14 at the edge of the outsole 1.

[0037] The composite relationship between the upper layer 12, the lining layer 13, and the insole layer 14 defines the thickness direction of the outsole 1. The insole layer 14 is a flat and extended bottom support layer. The bottom surface of the first heat-fused bonding portion 3 is coplanar with the bottom surface of the insole layer 14, and the continuous connection between the bottom and edge of the outsole 1 is maintained through an arc-shaped transition structure. The first heat-fused film 31 forms multiple points of bonding at the first heat-fused bonding portion 3, with multiple ring layers and a staggered circumferential relationship allowing it to cover the contour direction and radial range. The second heat-fused film 32 is correspondingly positioned at the arc-shaped transition structure, and its larger radial dimension partially covers and adapts to the transition area. Thus, the layered structure, coplanar bottom surface relationship, arc-shaped transition relationship, and heat-fused film layout at different locations of the outsole 1 correspond to each other, jointly forming a heat-fused bonding structure that matches the contour and edge transition area of ​​the outsole 1.

[0038] The second hot-melt reinforcing part 4 is arranged along the extension direction of the first hot-melt bonding part 3. The second hot-melt reinforcing part 4 has several hot-pressed fusion lines 41 recessed along its own extension direction via hot-pressing lines. The second hot-melt reinforcing part 4 is constructed as a grid-like structure. The hot-pressed fusion lines 41 are linear bonding areas formed by hot-pressing composite. Each hot-pressed fusion line 41 is spaced apart on the upper layer 12 side of the second hot-melt reinforcing part 4 and arranged according to the grid direction to form a grid-like hot-pressing composite shape. The grid-like structure emphasizes the distribution relationship of the hot-pressed fusion lines 41, without limiting their width, spacing, number, or specific shape.

[0039] The second heat-fused reinforcement 4 has a planar structure on the side facing the insole 14. A planar structure means that this side maintains a planar shape that matches the bottom structure of the outsole 1, without forming a grid-like protrusion corresponding to the heat-fused lines 41. The grid-like heat-fused lines 41 on the upper layer 12 side and the planar structure on the insole 14 side create a difference in shape: one side forms a linear composite area composed of heat-fused lines 41, while the other side remains planar, to coordinate with the flat, extended base of the insole 14. The second heat-fused reinforcement 4 extends continuously along the outer contour edge, creating a continuous reinforcement range in the contour direction for the connection area adjacent to the edge of the entry point 21. Simultaneously, the planar structure on the insole 14 side helps maintain the planar shape of that side.

[0040] A strip-shaped protrusion 42 is formed between adjacent hot-pressed fusion lines 41. The strip-shaped protrusion 42 is disposed adjacent to the hot-pressed fusion lines 41, but is not equivalent to the hot-pressed fusion lines 41 themselves. Each strip-shaped protrusion 42 is located between two adjacent hot-pressed fusion lines 41 and extends along the width direction of the second hot-pressed reinforcing portion 4. The width direction of the second hot-pressed reinforcing portion 4 refers to the transverse direction perpendicular to its extension direction along the outline of the outer bottom 1. After the strip-shaped protrusion 42 extends in this width direction, it can form a strip-shaped partition and a protruding shape in the area between the hot-pressed fusion lines 41.

[0041] The strip-shaped protrusion 42 is not provided on one side of the shoe sole 14, nor does it replace the function of the second hot-melt reinforcement 4 extending continuously along the outer contour edge. Through the cooperation of the hot-pressed fusion line 41 and the strip-shaped protrusion 42, the second hot-melt reinforcement 4 forms a clear grid and strip-shaped protrusion structure in the area near the penetration 21, while the shoe sole 14 side still maintains a planar structure.

[0042] In other embodiments, the upper 2 covers both sides of the first heat-fused bonding portion 3 in the thickness direction near the insertion opening 21. The two sides in the thickness direction refer to the two opposing surfaces of the first heat-fused bonding portion 3 along the thickness direction of the outsole 1. The portion of the upper 2 near the insertion opening 21 extends from one side of the first heat-fused bonding portion 3 to the other, creating a double-sided covering relationship in this local area. This double-sided covering does not mean that the entire area of ​​the outsole 1 has the same covering structure, but is limited to the connection area near the insertion opening 21. After the upper 2 completes the double-sided covering, a second heat-fused reinforcing portion 4 is formed by hot-pressing, so that the second heat-fused reinforcing portion 4 extends continuously in the contour direction while having a layered composite connection relationship in the thickness direction.

[0043] like Figure 5As shown, in the strip-shaped protrusions 42, the upper layer 12 and the upper 2 together constitute the outer covering layer 43. The outer covering layer 43 is located outside the inner lining layer 13 and forms a semi-enclosed relationship with the inner lining layer 13. Semi-enclosed means that the outer covering layer 43 is set around a part of the outer area of ​​the inner lining layer 13, and is not limited to forming a completely closed covering cavity for the inner lining layer 13. The upper layer 12 constitutes the outer layer of the upper part of the outsole 1, and the upper 2 constitutes the upper covering part near the entrance 21 and the foot covering area. Together, they form the outer covering layer 43, so that the inner lining layer 13 is in the corresponding hierarchical position between the outer covering layer 43 and the insole 14. The insole 14 maintains a flat and extended base-sole structure, and together with the outer covering layer 43 and the inner lining layer 13, it forms the hierarchical configuration of the outsole 1 and the upper 2.

[0044] The placement of the outer covering layer 43 does not alter the fundamental top-to-bottom composite relationship of the upper layer 12, the lining layer 13, and the insole layer 14. The upper layer 12 and the upper 2 are located on the outer side, allowing it to form a semi-enclosed structure around the lining layer 13; the lining layer 13 is located in the corresponding middle layer position; and the insole layer 14 forms a flat and extended base at the bottom. This configuration clearly defines the relative positions of the outer covering, the lining, and the bottom base, which is beneficial for ensuring that the heat-fused connection area between the upper 2 and the outsole 1 has a corresponding hierarchical foundation.

[0045] like Figure 7 As shown, the shoe upper 2 includes an upper 22 and an outsole 23 that are composite together. The outsole 23 is disposed on the upper surface of the outsole 1 and covers at least a portion of the foot wrapping area 11. A corresponding covering area can be formed between the outsole 23 and the foot wrapping area 11, so that the lower connecting end of the shoe upper 2 corresponds to the upper support area of ​​the outsole 1. The upper 22 is connected to the top of the outsole 23, and the upper 22 and the outsole 23, after being composited together, form the upper covering structure of the shoe upper 2.

[0046] At least the upper 23 is fixedly connected to the outsole 1 via the first heat-fused joint 3. That is, the upper 23, as the lower structure connecting the upper 2 and the outsole 1, can form a stable connection path near the foot-wrapping area 11 via the first heat-fused joint 3. After the upper 22 is connected to the top of the upper 23, it together with the upper 23 forms the covering relationship between the upper 2 and the foot-wrapping area 11. The specific materials, thicknesses, and composite processes of the upper 22 and upper 23 are not limited, as long as the upper 23 is located on the upper surface of the outsole 1 and at least covers a portion of the foot-wrapping area 11, the upper 22 is connected to the top of the upper 23, and at least the upper 23 is fixedly connected to the outsole 1 via the first heat-fused joint 3, the corresponding upper layer structure can be achieved.

[0047] The hot-pressed weld lines 41 on the sides of the upper layer 12 form a grid-like composite shape. Strip-shaped protrusions 42 are arranged between adjacent hot-pressed weld lines 41 and extend along the width direction, giving the area corresponding strip-like separation and protrusion shapes. The upper 2 covers both sides of the first hot-melt joint 3 in the thickness direction and is hot-pressed together, so that the connecting area simultaneously forms a layered connection relationship in the thickness direction. The continuous extension, grid-like welding, and double-sided covering work together to reduce the risk of separation of the edge junction area of ​​the insertion entrance 21 under repeated stretching, shearing, and bending. The upper 23 covers the foot wrapping area 11 and its hot-melt fixation with the outsole 1, thus forming a connection path from the foot wrapping area 11 to the outsole 1.

[0048] The above embodiments are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

Claims

1. A reinforced slipper, characterized in that, include: The outsole has a first heat-fused bonding portion extending along its outline on its outer peripheral edge; one end of the outsole along its own length direction has a foot wrapping area. The upper is fixedly connected to the foot-wrapping area of ​​the outsole via a portion of the first heat-fused joint, and the upper and the outsole together form an opening for the human foot to enter. The upper is layered and laminated with the first heat-fused joint near the entrance to form a second heat-fused reinforcement. The second heat-fused reinforcement starts at the junction of the edge of the entrance and the first heat-fused joint and extends along the contour of the outsole toward the foot wrapping area.

2. The reinforced slipper according to claim 1, characterized in that: The outsole comprises, from top to bottom, a sequentially composited upper layer, an inner lining layer, and an insole layer. The insole layer has a flat bottom surface. The bottom surface of the first heat-fused joint is coplanar with the bottom surface of the insole layer. An arc-shaped transition structure is formed between the first heat-fused joint and the upper layer.

3. A reinforced slipper according to claim 2, characterized in that: The first hot-melt bonding portion is formed by hot-melting and sinking from one side of the shoe upper layer to form a plurality of first hot-melt films. The first hot-melt films have a sheet-like structure, and the bottom surface of the first hot-melt films is flush with the bottom surface of the shoe bottom layer.

4. A reinforced slipper according to claim 3, characterized in that: Multiple first hot melt films are distributed in a ring-shaped interval along the contour of the first hot melt joint, and the multiple first hot melt films are distributed in multiple ring layers in the radial direction, with the first hot melt films in two adjacent ring layers being staggered in the circumferential direction.

5. A reinforced slipper according to claim 3, characterized in that: A second hot melt film is formed by hot melting and sinking at the arc-shaped transition structure. The radial dimension of the second hot melt film is larger than that of the first hot melt film. Multiple second hot melt films are distributed at intervals along the contour of the arc-shaped transition structure.

6. A reinforced slipper according to claim 2, characterized in that: The second hot-melt reinforcement extends continuously along the outer contour edge of the outsole. The second hot-melt reinforcement has a plurality of hot-pressed weld lines distributed on the side facing the upper layer and is constructed as a grid structure, while the side facing the bottom layer is constructed as a planar structure.

7. A reinforced slipper according to claim 6, characterized in that: A strip-shaped protrusion is provided between adjacent hot-pressed fusion lines, and each strip-shaped protrusion extends along the width direction of the second hot-melt reinforced part.

8. A reinforced slipper according to claim 2, characterized in that: The upper layer and the upper together form an outer covering layer, which partially surrounds the inner lining layer. The bottom layer is a flat and extended base structure.

9. A reinforced slipper according to claim 2, characterized in that: The upper of the shoe covers both sides of the first hot-melt bond in the thickness direction at the portion near the opening, and is then hot-pressed to form the second hot-melt reinforced portion.

10. A reinforced slipper according to claim 2, characterized in that: The shoe upper includes an upper and an outsole that are composite to each other. The outsole is disposed on the upper surface of the outsole and covers at least a portion of the foot wrapping area. The upper is connected to the top of the outsole. At least the outsole is fixedly connected to the outsole through the first heat-fused joint.

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