Inflatable paddleboard

Abstract

An inflatable paddleboard includes a main body and a rim seal, the main body includes two main body layers, the rim seal is integrated with the two main body layers by heat sealing to form an inflatable cavity between the two main body layers and the rim seal. The heat sealing process does not require the use of glue to bond the rim seal with the puller, which is environmentally friendly and prevents air leakage.

Description

Technical Field

[0001] This invention relates to paddleboards, and more particularly to an inflatable paddleboard and its heat-sealing process. Background Technology

[0002] Inflatable paddleboards are essential equipment for water sports such as surfing. They must be able to float on water while maintaining a certain degree of rigidity and sturdiness. In traditional manufacturing methods, the main body of the paddleboard is usually made of PVC layers, which are glued together with PVC side strips. However, this glue bonding method has several disadvantages, including requiring a large production area, a large number of operators, high manufacturing costs, increased risk of leakage, short service life, and poor aesthetics.

[0003] The strength of the bond can be affected by the adhesive, and inferior adhesives may even cause the paddleboard to break. Furthermore, adhesives contain a large amount of volatile harmful substances. In paddleboard production workshops, the bonding process must be done manually, exposing workers to the strong, pungent odor of the adhesive, posing serious health risks and being environmentally unfriendly.

[0004] Adhesives age over time. As the adhesive deteriorates, its bonding strength gradually decreases, leading to weakened adhesion between PVC layers. This degradation process can cause the paddleboard to leak air, thereby compromising its buoyancy, structural integrity, and overall performance.

[0005] Furthermore, aging adhesive can lead to cracking or delamination, further accelerating air loss and shortening the paddleboard's lifespan. This not only impacts user experience but also increases maintenance costs and the likelihood of premature product failure. Therefore, relying solely on adhesive bonding presents serious durability issues, highlighting the need for more reliable and durable bonding methods.

[0006] Given the current limitations of adhesive bonding methods, such as poor adhesion and environmental hazards, there is an urgent need for a better method to bond the PVC layer of inflatable paddleboards. The improved method should enhance bond strength and quality, reduce the presence of harmful substances in the adhesive, and provide a safer and more environmentally friendly manufacturing process for inflatable paddleboards. Summary of the Invention

[0007] One advantage of this invention is that it provides an inflatable paddleboard and its heat-sealing process, which eliminates the need for adhesive bonding of edge seals and wire drawing materials, avoiding the harm of harmful substances in adhesives to the health of operators and users, making it more environmentally friendly; it reduces the construction area required, eliminating the need to reserve a large area for adhesive bonding operations; it reduces the workload of operators, improves production efficiency, and lowers production costs.

[0008] Another advantage of this invention is that it provides an inflatable paddle and its heat-sealing process. The heat-sealing process makes the edge seal and the wire drawing material more firmly bonded, reduces the air leakage rate of the product, improves the product quality and service life, and the product after heat sealing has a better appearance and increased aesthetics, thus improving the product quality.

[0009] Another advantage of the present invention is that it provides an inflatable paddle and its heat-sealing process, the manufacturing process of which enables the inflatable paddle to form a structure with the head raised after inflation.

[0010] Another advantage of this invention is that it provides an inflatable paddleboard and its heat sealing process, which reduces manual intervention, saves labor costs, and improves production efficiency through automated positioning and automated heat sealing.

[0011] According to one aspect of the present invention, an inflatable paddleboard is provided, comprising two layers of laminated wire material and a bonding strip, wherein the bonding strip, i.e., an edge sealing strip or an edge wrapping strip, is wrapped around the edge of the two layers of laminated wire material by a heat sealing process.

[0012] The present invention also provides a method for manufacturing an inflatable paddleboard, comprising the following steps:

[0013] The two layers of wire drawing material are overlapped and fixedly connected; and

[0014] The combined strip is wrapped around the edge of the two layers of overlapping wire drawing material through a heat sealing process.

[0015] This invention provides a method for manufacturing an inflatable paddleboard by heat-sealing a wire drawing material and a splicing strip, wherein the splicing strip can be implemented as a PVC pad, which serves as an edge banding wrapped around the edges of the two layers of wire drawing material, and the bonding process is a heat-sealing process rather than an adhesive process.

[0016] In the two-layer wire drawing process, two layers of wire drawing material are first cut to match their size and shape. Then, the two layers are aligned, and two pressing columns are driven down onto the two layers to create a partial weld connection, thus securing the two layers and preventing misalignment during subsequent heat sealing. The two pressing columns can be pressed down at predetermined intervals to perform a dot-matrix fixing process. Using equipment similar to a high-frequency, high-frequency welding machine, current heating is applied to align the two edges of the wire drawing material through a partial weld, thus fixing the two layers together by dot-matrix pressing. This pressing step begins at the tail of the two layers of wire drawing material and continues until approximately one-half to three-quarters of the total length has been pressed together.

[0017] It is understandable that the above-mentioned dot-mapping fixing connection process can be completed automatically by spot welding equipment or manually. Additionally, in another variant embodiment, the two layers of wire drawing material can also be fixed with adhesive.

[0018] In this invention, the upper layer of drawing material is scraped up and wrinkled, so the front end of the upper layer of drawing material is in a backward position relative to the front end of the lower layer of drawing material. Specifically, the upper and lower vacuum cylinders can be controlled by the operating table to hold the drawing material in a fixed position relative to the machine platform. The upper vacuum cylinder is moved towards the tail of the plate, causing the drawing material to be misaligned vertically.

[0019] The upper and lower layers of drawing material are further pressed and fixed together. The upper and lower conveyor shafts operate at different speeds, specifically, the upper conveyor shaft moves faster than the lower one. During the pressing process, the upper layer of drawing material is fixed to the lower layer and small wrinkles appear. The pressing process continues until the upper layer of drawing material is horizontal. Then, the excess portion at the front end of the lower layer of drawing material is trimmed. It can be understood that in the finished product, the lower layer of drawing material is the upper layer; its length is relatively reduced due to the trimming, resulting in a structure where the two layers of drawing material, after being inflated, form a raised head.

[0020] Align the PVC padding layer with the drawing material, ensuring their edges are flat and without misalignment. The PVC padding layer should cover the edges of both layers of drawing material, and secure them using clamps or positioning devices. Then, heat-treat the contact area between the PVC padding layer and the drawing material using a heat-sealing device to their melting temperature, making the contact surface molten. Control the heating rate and temperature uniformity to avoid localized overheating or underheating. The heat-sealing time depends on factors such as material thickness, heat-sealing temperature, and pressure.

[0021] During the pressing operation, the PVC pad and the drawing material are pressed together by the pressing roller machine, and hot air is provided by the hot air nozzle. Taking advantage of the stronger fluidity of the molten state compared to the solid state, the PVC pad and the drawing material are fully contacted and fused together, ensuring uniform and stable pressure.

[0022] It is understood that the materials selected in the above embodiments are a combination of PVC and filament material (the surface is a PVC layer), which is also applicable to other materials that are in a molten state after heating, such as PVC and TPU, or TPU and TPU.

[0023] According to one aspect, the present invention provides an inflatable paddleboard, comprising:

[0024] The main body comprises two main layers; and

[0025] The side seal is integrally formed with the two main body layers by heat sealing to form an air cavity between the two main body layers and the side seal.

[0026] According to one embodiment, the edge seal includes one or more strip portions that cover the edges of the two main body layers.

[0027] According to one embodiment, the side sealing strip includes a plurality of interconnected strip portions.

[0028] According to one embodiment, multiple strip portions are integrated integrally without the need to use glue to bond two adjacent strip portions.

[0029] According to one embodiment, before the edge seal is heat-sealed to the two main body layers, a plurality of strip portions are joined together to form the edge seal, the edge seal including two ends and a strip body located between the two ends, wherein two adjacent strip portions of the strip body are not glued to each other.

[0030] According to one embodiment, the two ends of the side seal are two sealing ends. After the heat sealing process between the side seal and the two bodies, the two sealing ends are joined together, and the joining method includes heat sealing or adhesive bonding.

[0031] According to one embodiment, each strip portion of the edge seal includes two surface layers and a mesh layer located between the two surface layers, each mesh layer including a plurality of mutually perpendicular first yarns and second yarns.

[0032] According to one embodiment, the plurality of first yarns and the plurality of second yarns are respectively inclined relative to the length direction of the edge seal.

[0033] According to one embodiment, the inclination angle between the first yarn and the length direction of the edge seal is 30° to 60°.

[0034] According to one embodiment, the inclination angle between the first yarn and the length direction of the edge seal is 45°.

[0035] According to one embodiment, a decorative strip is attached to the side seal strip. The decorative strip includes multiple strip portions, each strip portion including multiple mutually perpendicular first yarns and second yarns, wherein the first yarns and second yarns in one or more strip portions are inclined yarns relative to the length direction of the side seal strip.

[0036] According to one embodiment, the body includes a head and a tail, wherein the head and the tail are each provided with two strip portions having different yarn patterns.

[0037] According to one embodiment, the body includes multiple connecting lines connecting two body layers, the width of the portion of the edge seal not heat-sealed with the two body layers is less than the height of the connecting lines between the two body layers, wherein the connecting lines between the edges of the two body layers are removed or cut in the middle.

[0038] According to one embodiment, the first yarns of the two strip portions on both sides of the head and the tail are arranged in a mirror-image diagonal line.

[0039] According to one embodiment, between the two ends, in a clockwise or counterclockwise direction, the end edge of each preceding strip portion of the strip body is located below or above the end edge of the next strip portion.

[0040] According to one embodiment, the edge seal includes a middle strip, an upper strip integrated on the upper edge of the middle strip, and a lower strip integrated on the lower edge of the middle strip.

[0041] According to one embodiment, the middle strip, the upper strip, and the lower strip each include two layers and a mesh layer located between the two layers, wherein each mesh layer includes multiple mutually perpendicular first yarns and second yarns, and the first yarns and second yarns in the upper strip and the lower strip are inclined yarns with respect to the length direction of the edge seal strip.

[0042] According to one embodiment, the two main body layers are made of PVC or TPU filament material, and multiple connecting lines connect the two main body layers.

[0043] According to one embodiment, the surface layer of each strip portion of the side seal is made of PVC or TPU, and the mesh layer is made of a fiber material selected from polyester fiber, nylon fiber, and aramid fiber.

[0044] According to another aspect, the present invention provides an inflatable paddleboard, comprising:

[0045] The body includes a head, the head comprising a top head layer and a bottom head layer; and

[0046] The side seal is heat-sealed to the main body to form an inflation cavity, wherein the length of the top layer is less than the length of the bottom layer, so that the inflation paddle forms a raised head when the inflation cavity is inflated.

[0047] According to one embodiment, the body includes two main body layers, the top head layer and the bottom head layer are each part of the two main body layers, and the side seal is integrally formed with the two main body layers to form the inflation cavity.

[0048] According to one embodiment, when the inflation chamber is inflated, the top head layer and the bottom head layer are upwardly extending arc-shaped layers to form the upturned head.

[0049] According to one embodiment, both the top and bottom layers include bent edges. During the heat sealing process between the two main layers and the side seal, the bent edges of the top and bottom layers are aligned and overlapped side by side. The side seal wraps around the bent edges of the top and bottom layers. After the heat sealing process is completed, the top and bottom layers are spaced apart, so that the paddle plate forms the upturned head when the inflation chamber is inflated.

[0050] According to one embodiment, both the top and bottom layers include bent edges, wherein during the heat sealing process of the two main layers with the side seal, the bent edges of the top and bottom layers are aligned with each other and have the same perimeter, and after the heat sealing process, the top and bottom layers are spaced apart, such that the inflatable paddle forms the upturned head when the inflation cavity is inflated.

[0051] According to one embodiment, before performing the heat sealing process, the top material layer and the bottom material layer are temporarily fixed, and the top material layer is folded over the bottom material layer to expose the front end portion of the bottom material layer, wherein the front end portion of the bottom material layer is cut off so that the top material layer and the bottom material layer provide two main layers.

[0052] According to one embodiment, the two main body layers include a top main body layer and a bottom main body layer, wherein the bottom material layer forms the top main body layer, and the top material layer forms the bottom main body layer.

[0053] According to one embodiment, during the heat sealing process, the bent edges of the top and bottom layers are temporarily fixed by a dummy weld connection point.

[0054] According to one embodiment, the length of the front end portion of the bottom material layer is 3cm-7cm, the length of the head of the main body is 60cm-120cm, and the height of the bottom edge of the side seal is 3cm-20cm when the inflatable paddleboard is inflated.

[0055] According to one embodiment, the width of the area where the side seal overlaps with the top and bottom layers is 0.5cm-3cm.

[0056] According to one embodiment, the side seal includes a plurality of interconnected strip portions, the plurality of strip portions including a first strip portion and a second strip portion that are interconnected and heat-sealed to the top and bottom top layers on both sides of the head.

[0057] According to one embodiment, the first strip portion and the second strip portion are integrally combined without using glue to bond the two adjacent strip portions together.

[0058] According to another aspect, the present invention provides a manufacturing system for an inflatable paddleboard, wherein the inflatable paddleboard includes: a body and a side seal, the body including two body layers, the side seal being heat-sealed to the two body layers to form an inflation cavity between the two body layers and the side seal; wherein the system includes a heat-sealing device, the heat-sealing device including a support platform for supporting the two body layers and the side seal covering the edges of the two body layers, a pressure roller assembly for clamping the body layers and the side seal, and a hot air nozzle for heat-sealing the side seal to the two body layers of the body.

[0059] According to one embodiment, the system further includes a fixing device for temporarily fixing the two main body layers, wherein the fixing device includes a support platform for placing two material layers for preparing the two main body layers, and two pressure posts driven to create a false solder joint between the two material layers.

[0060] According to one embodiment, the fixing device further includes: a wrinkling element for wrinkling the top material layer of the two material layers to create a wrinkled portion of the top material layer; and a conveying assembly for conveying the two material layers, wherein, after the wrinkled portion is formed on the top material layer, the front end portion of the bottom material layer of the two material layers is exposed and cut off to provide two main body layers, wherein the top material layer is used to provide the bottom main body layer of the two main body layers, and the bottom material layer is used to provide the top main body layer of the two main body layers.

[0061] According to one embodiment, the transmission assembly includes an upper transmission member and a lower transmission member, wherein the transmission speed of the upper transmission member is greater than the transmission speed of the lower transmission member.

[0062] According to one embodiment, the system further includes a cutting device comprising a conveying platform for conveying strip material and a cutting assembly for obliquely cutting the strip material to provide strip portions of the side seal, wherein each strip portion of the side seal includes two surface layers and a mesh layer between the two surface layers, each mesh layer including a plurality of first yarns and second yarns perpendicular to each other, wherein when the strip material is obliquely cut to obtain the strip portion, the plurality of first yarns and the plurality of second yarns are respectively inclined relative to the length direction of the strip portion.

[0063] According to one embodiment, the system further includes a joining device comprising a pressure block and a heat press, wherein when the pressure block is placed on the two end edges of the two strip portions, the heat press is driven to be placed on the pressure block to heat seal the two end edges of the two strip portions.

[0064] According to one embodiment, the system further includes an end connection device, which includes a heating element. After the side seal is heat-sealed to the two main body layers of the body through a heat-sealing process, the heating element is driven to be positioned at positions corresponding to the two ends of the side seal for heat-sealing the two ends of the side seal.

[0065] The present invention also provides a method for manufacturing an inflatable paddleboard, comprising the following steps:

[0066] Overlap the two main layers of the main body; and

[0067] The edge seal is heat-sealed together with the two main body layers to form an air-filled cavity between the two main body layers and the edge seal.

[0068] According to one embodiment, the method further includes the steps of: clamping the body layer and the side seal by a pressure roller assembly and heat-sealing the side seal to the two body layers of the body by a hot air nozzle.

[0069] According to one embodiment, the method further includes the step of temporarily fixing the two main body layers prior to the heat sealing process to align and attach the two main body layers to each other, wherein the two main body layers are spaced apart from each other when the paddle is inflated.

[0070] According to one embodiment, the method further includes the steps of: scraping up the top material layer of the two material layers to create a folded portion of the top material layer, and cutting off the front end portion of the bottom material layer of the two material layers to provide two body layers, wherein the top material layer is used to provide the bottom body layer of the two body layers, and the bottom material layer is used to provide the top body layer of the two body layers.

[0071] According to one embodiment, the method further includes: obliquely cutting strip material to provide strip portions of the side seal, wherein each strip portion of the side seal includes two surface layers and a mesh layer located between the two surface layers, each mesh layer including a plurality of first yarns and a plurality of second yarns perpendicular to each other, wherein when the strip portion is obliquely cut from the strip material, the plurality of first yarns and the plurality of second yarns are respectively oblique relative to the length direction of the strip portion.

[0072] According to one embodiment, the method further includes the step of heat-sealing two end edges of two adjacent strip portions to provide the edge seal, wherein, when the two end portions are bonded after the heat-sealing process, in a clockwise or counterclockwise direction, the end edge of each preceding strip portion is below the end edge of the next strip portion, or the end edge of each preceding strip portion is above the end edge of the next strip portion. Attached Figure Description

[0073] Figure 1 This is a perspective view of an inflatable paddleboard according to a preferred embodiment of the present invention.

[0074] Figure 2 This is a side view of an inflatable paddleboard according to the preferred embodiment of the present invention described above.

[0075] Figure 3A This is an exploded view of an inflatable paddleboard according to the preferred embodiment of the present invention.

[0076] Figure 3B This is a further exploded view of the side sealing strip and decorative strip of the inflatable paddleboard according to the preferred embodiment of the present invention.

[0077] Figure 4A Figure 4b Figure 4C and Figure 4D This is a schematic diagram of the manufacturing process of the inflatable paddleboard according to the preferred embodiment of the present invention.

[0078] Figure 5A This is a perspective view of an inflatable paddleboard according to a preferred embodiment of the present invention, wherein the decorative strip has not yet been attached to the side seal.

[0079] Figure 5B yes Figure 5A A cross-sectional view of the inflatable paddleboard.

[0080] Figure 6 This is a schematic diagram of multiple strip portions of the side seal of the inflatable paddle plate according to the above preferred embodiment of the present invention.

[0081] Figure 7 This is a schematic diagram of the pressing method between the end edges of adjacent strip portions in the multiple strip portions of the edge seal of the inflatable paddle plate of the above preferred embodiment of the present invention.

[0082] Figure 8 This is a cross-sectional view of the side seal of the inflatable paddleboard according to the above-described preferred embodiment of the present invention.

[0083] Figure 9 This is a schematic diagram showing the overlapping of the two layers of the edge sealing strip and the mesh layer of the inflatable paddleboard according to the preferred embodiment of the present invention.

[0084] Figure 10 This is a schematic diagram showing that the side seal of the inflatable paddleboard of the preferred embodiment of the present invention is composed of four strips connected together.

[0085] Figure 11 This is a schematic diagram of the yarn arrangement of the strip portion of the edge sealing strip of the inflatable paddle plate according to the preferred embodiment of the present invention, wherein the top layer above the mesh layer is removed to show the mesh layer of each strip portion.

[0086] Figure 12 This is a schematic diagram of the optional yarn arrangement of the strip portion of the edge seal of the inflatable paddle according to the above preferred embodiment of the present invention, wherein the top layer above the mesh layer is removed to show the mesh layer of each strip portion.

[0087] Figure 13 This is a cross-sectional view of the decorative strip of the inflatable paddleboard according to the above-described preferred embodiment of the present invention.

[0088] Figure 14 This is a schematic diagram showing the stacking of the two sides of the decorative strip and the mesh layer of the inflatable paddleboard according to the above preferred embodiment of the present invention.

[0089] Figure 15 This is a schematic diagram of the strip portion of the decorative strip of the inflatable paddleboard according to the above preferred embodiment of the present invention, wherein the top layer above the mesh layer is removed to show the mesh layer of each strip portion.

[0090] Figure 16 This is a perspective view of an inflatable paddleboard of an alternative mode according to the above-described preferred embodiment of the present invention.

[0091] Figure 17 This is a cross-sectional view of an inflatable paddleboard according to an alternative embodiment of the preferred embodiment described above.

[0092] Figure 18A , Figure 18B and Figure 18C This is a schematic diagram showing the four strip portions of the side seal of the inflatable paddleboard in the alternative method of the above preferred embodiment of the present invention connected to form an upper strip or a lower strip.

[0093] Figure 19A and Figure 19B This is a schematic diagram of the middle strip, upper strip, and lower strip of the inflatable paddleboard in the alternative method of the above preferred embodiment of the present invention, which are connected to form a side seal.

[0094] Figure 20A and Figure 20B This is a schematic diagram of the side seal and the inflatable paddle body joining in the alternative method of the above preferred embodiment of the present invention.

[0095] Figure 21 This is a schematic diagram of the decorative strip used in the replacement method of the inflatable paddleboard in the preferred embodiment of the present invention.

[0096] Figure 22A This is a schematic diagram showing a strip portion of the strip material according to the above-described preferred embodiment of the present invention being cut to form the side seal of an inflatable paddle.

[0097] Figure 22BThis is a schematic diagram of the mesh layer of the strip portion of the edge seal of the inflatable paddle according to the above preferred embodiment of the present invention, wherein the top layer above the mesh layer is removed to show the mesh layer of the resulting strip portion.

[0098] Figure 23 This is a schematic diagram illustrating a cutting device for cutting strip material to obtain a strip portion of the side seal of an inflatable paddle according to the above-described preferred embodiment of the present invention.

[0099] Figure 24A , 24B 24C is a perspective view showing the joining arrangement of the strip portions of the side sealing strip for connecting the inflatable paddleboard according to the above-described preferred embodiment of the invention.

[0100] Figure 25A , 25B 25C and 25D are perspective views illustrating two main body layers of a paddleboard body processed according to the above-described preferred embodiment of the invention.

[0101] Figure 26 This is a perspective view showing a fixing device for temporarily fixing two material layers according to the above-described preferred embodiment of the present invention.

[0102] Figure 27 This is a perspective view showing a wrinkle-removing element of a fixing device for wrinkling a top material layer according to the above-described preferred embodiment of the present invention.

[0103] Figure 28 This is a perspective view showing the front of two material layers to be wrinkled according to the preferred embodiment of the present invention, wherein the front end of the bottom material layer is exposed and not covered by the top material layer.

[0104] Figure 29 This is a perspective view showing two main body layers of the bottom material layer according to the above-described preferred embodiment of the present invention, with the front end portion of the bottom material layer cut off to provide the main body of the inflatable paddleboard.

[0105] Figure 30 This is a schematic diagram of the valve seat hole of the inflation valve of the inflatable paddle plate according to the above preferred embodiment of the present invention.

[0106] Figure 31 This is a schematic diagram illustrating a heat-sealing device for bonding a side seal to two main body layers of the body of an inflatable paddle plate according to the above-described preferred embodiment of the present invention.

[0107] Figure 32 This is a schematic diagram showing the end connection structure between the two ends of the sealing strip of the inflatable paddle according to the above-described preferred embodiment of the present invention.

[0108] Figure 33This is a schematic diagram of the valve body installed on the main body of the inflatable paddle plate according to the above preferred embodiment of the present invention.

[0109] Figure 34 This is a schematic diagram of an accessory mounted on the main body of an inflatable paddleboard according to the above-described preferred embodiment of the present invention.

[0110] Figure 35 This is an exploded view of the inflation valve of the inflatable paddleboard according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0111] The following description is intended to enable those skilled in the art to make and use the invention. The preferred embodiments provided in the following description are merely examples, and modifications will be understood by those skilled in the art. The general principles defined in the following description will apply to other embodiments, alternatives, modifications, equivalents, and applications without departing from the spirit and scope of the invention.

[0112] See appendix Figures 1 to 35 The illustration shows an inflatable paddle 100 according to a preferred embodiment of the present invention. The inflatable paddle 100 includes a body 10, which includes two body layers, the two body layers being a top body layer 11 and a bottom body layer 12. A plurality of connecting lines 13 extend between the two body layers 11 and 12. Side seals 20 are heat-sealed to the edges 110 and 120 of the two body layers 11 and 12, respectively, to define an inflation cavity 14 between the two body layers and the side seals 20. The illustration also includes an inflation valve 15 for inflating the inflation cavity 14.

[0113] In this embodiment, the connecting lines 13 at the edges 110 and 120 of the two main layers 11 and 12 can be removed or cut in the middle. The connecting lines 13 are set in the area within the edges 110 and 120 of the two main layers 11 and 12 to facilitate the heat sealing between the edge seal 20 and the edges 110 and 120 of the two main layers 11 and 12.

[0114] The two main layers 11 and 12 are the upper and lower structural layers of the paddleboard. Multiple connecting lines 13 are provided between the two main layers 11 and 12. These connecting lines 13 extend vertically between the top and bottom main layers 11 and 12 and are designed to maintain the shape and structural integrity of the inflatable paddleboard 100 when inflated. In effect, the connecting lines 13 help the paddleboard resist excessive expansion and deformation, ensuring that it maintains a rigidity and flat surface similar to a solid board when fully inflated.

[0115] The edge seal 20 is heat-sealed to the edges 110 and 120 of the two main body layers 11 and 12, sealing the periphery of the inflatable paddle 100. The inflation chamber 14 is a closed space filled with air when the inflatable paddle 100 is inflated. By controlling the air pressure within the inflation chamber 14, air bubbles can be prevented from forming during inflation of the paddle 100. The stiffness of the inflatable paddle 100 can be adjusted to suit different water conditions and user preferences.

[0116] When inflated, the combination of the two main layers 11, 12, the connecting line 13, and the side seal 20 ensures that the inflatable paddleboard 100 maintains its shape and provides a stable paddling platform.

[0117] The core of the paddleboard 100 is the drop stitch fabric, which is crucial to the structural integrity of the inflatable paddleboard 100. The two main body layers 11 and 12 are two parallel drop stitch fabric layers, and the multiple connecting lines 13 can be made of polyester fiber, nylon, or aramid fiber. When the inflatable paddleboard 100 is inflated, these connecting lines 13 are located between the two main body layers 11 and 12 and keep the upper and lower surfaces in a basically flat shape, so that the inflatable paddleboard 100 obtains a high internal pressure, thereby forming a firm and stable plane.

[0118] The primary material of the encasing body is typically polyvinyl chloride (PVC). PVC is known for its durability and abrasion resistance, ensuring that the inflatable paddleboard 100 remains airtight and resists environmental factors. In some cases, thermoplastic polyurethane (TPU) can be used as an alternative coating, providing similar airtightness.

[0119] Side seals 20 are typically made of strong yet flexible materials, such as PVC or TPU, and are designed to resist air leakage, external impacts, and general abrasion.

[0120] More specifically, such as Figure 8-12 As shown, the edge sealing strip 20 of this embodiment includes two layers 201 and a mesh layer 202 located between the two layers 201. The two layers 201 can be made of PVC or TPU, respectively, and the mesh layer 202 can be made of fibrous materials such as polyester fiber, nylon, and aramid fiber. The mesh layer 202 includes multiple first yarns 2021 and multiple second yarns 2022 that are perpendicular to each other and interconnected to form connecting nodes 2023. The two layers 201 cover both sides of the mesh layer 202. The first yarns 2021 and second yarns 2022 can be implemented as warp yarns and weft yarns, respectively. In one example, the yarn with a longer length among the first yarns 2021 and second yarns 2022 can be a warp yarn.

[0121] The fiber-reinforced mesh layer 202 increases tensile strength and prevents shape deformation during inflation. The PVC or TPU coated surface layer 201 resists environmental pressure, impact, and abrasion, thus extending the board's lifespan. The double-layered structure ensures a tight seal, reducing the risk of prolonged air leakage. The first and second yarns 2021 and 2022 in the mesh layer control expansion, ensuring shape stability and a firm surface when fully inflated.

[0122] In this embodiment, the side sealing strip 20 includes a strip body 203 and two ends 204. The strip body 203 extends between the two ends 204, and the two ends 204 are joined together to form a continuous circular strip. The strip body 203 is integrally joined to the edge 110 of the top main layer 11 and the edge 120 of the bottom main layer 12 by heat fusion, forming the outer peripheral sidewall of the inflatable paddle 100 between the two ends 204 of the side sealing strip 20. In this embodiment, the strip body 203 is bonded to the edge 110 of the top main layer 11 and the edge 120 of the bottom main layer 12 without the need for glue. The strip body 203 includes a main strip portion 2031 and two attachment portions 2032. The two attachment portions 2032 extend to the upper and lower sides of the main strip portion 2031 respectively and are each heat-bonded to the edges 110 and 120 of the two main layers 11 and 12.

[0123] Unlike adhesives, which harden the bonded area and make it prone to cracking, heat sealing preserves the material's natural flexibility. This improves impact resistance and reduces the likelihood of material fatigue. The heat sealing process creates a seamless fusion, eliminating microscopic air gaps that may exist in adhesive bonding.

[0124] Over time, the adhesive may dry, crack, or peel, leading to air leakage. The adhesive also weakens under UV radiation and water erosion, reducing its sealing effectiveness. When the inflatable paddle 100 operates under high internal pressure, the adhesive may gradually lose its stickiness, causing delamination. This heat-sealing method between the side seal 20 and the body 10 reduces the risk of air leakage and enhances the long-term inflation stability of the inflatable paddle 100.

[0125] See Figure 22A and Figure 22B The strip material 200 shown in the figure includes mutually perpendicular transverse first yarns 2021 and longitudinal second yarns 2022. The transverse first yarns 2021 extend along the length direction of the strip material 200, and the longitudinal second yarns 2022 extend along the width direction of the strip material 200. When cutting the edge sealing strip 20 from the strip material 200, in this embodiment, it is preferable that the cutting line is an oblique cutting line relative to the transverse first yarns 2021, but not along the transverse first yarns 2021. The advantages of oblique cutting are that it prevents wear, allows for different desired lengths, and provides elasticity and tensile strength.

[0126] like Figure 22B As shown, the first yarn 2021 and the second yarn 2022 do not extend in either the length or width direction of the edge seal 20 to enhance the tensile strength of the edge seal 20 along its length, allowing the edge seal 20 to be heat-fused around the edge 110 of the top main layer 11 and the edge 120 of the bottom main layer 12. The angle α between the first yarn 2021 and the length direction of the edge seal 20 is 30°-60°, preferably 37°-53°, and more preferably 45°.

[0127] In other words, when cut along the first yarn direction, the resulting edge seal 20 has rigid fibers arranged along its length, thus limiting its flexibility. An oblique cut alters the arrangement of these rigid fibers, thereby increasing its stretchability along its length. This stretchability allows the edge seal 20 to stretch and adhere smoothly when covering the edges 110 of the top body layer 11 and the edges 120 of the bottom body layer 12. This structure also reduces stress concentration, preventing wrinkles, deformation, or misalignment during the covering process. Due to its improved stretchability, the edge seal 20 can uniformly conform to the curved edges of the body 10, ensuring a larger, more consistent heat-sealed contact surface, thus forming a strong and airtight seam, preventing air leakage and improving durability.

[0128] Furthermore, during the heat sealing process, the side seal 20 is sandwiched between the components of the heat sealing device 410 of the manufacturing system 400 of the inflatable paddle plate 100. The clamping force will act on both sides of the side seal 20, and the inclined fiber orientation will more effectively absorb and disperse stress, thereby preventing wrinkles and better conforming to the contour of the body 10.

[0129] The edge seal 20 can be implemented as a single strip, such as... Figures 10 to 12 As shown, the edge seal 20 includes multiple strip portions that are connected end to end to form an annular strip for connection to the edge 110 of the top body layer 11 and the edge 120 of the bottom body layer 12 by heat sealing.

[0130] More specifically, in this embodiment, the edge seal 20 includes four strip portions, namely the first strip portion 21, the second strip portion 22, the third strip portion 23, and the fourth strip portion 24. The four strip portions are combined to form the strip body 203. The ends of the first strip portion 21 and the fourth strip portion 24 are the two ends 204 of the edge seal 20. The four strip portions can be connected together by a heat sealing process.

[0131] The first strip portion 21 and the second strip portion 22 are connected as one unit through the first connecting seam 205. The second strip portion 22 and the third strip portion 23 are connected as one unit through the second connecting seam 206. The third strip portion 23 and the fourth strip portion 24 are connected as one unit through the third connecting seam 207. The fourth strip portion 24 and the first strip portion 21 are connected through the fourth connecting seam 208. The length of each strip portion can be 1m-2.5m, preferably 1.6m-2.2m. The width of each strip portion can be 5cm-25cm, preferably 8cm-13cm. The thickness of each strip portion can be 0.3cm-1cm, preferably 0.5cm-0.7cm. The width of the main strip portion 2031 located at the edge of the main body 10 in each strip section is less than the height of the connecting line 13, which can be 15cm high. Since the connecting line 13 between the edges 110 and 120 of the two main body layers is removed or cut off, the edges 110 and 120 of the two main body layers can serve as part of the sidewall of the inflatable paddle 100. The width of the edge 110 of the top main body layer 11 and the edge 120 of the bottom main body layer 12, which are heat-sealed to the strip portions of the edge seal 20 respectively, is approximately 0.5cm-3cm, preferably 1.5cm-2cm.

[0132] As a typical example, the length of each strip of a standard inflatable paddleboard 100 can be 1.8m, the width of each strip can be 8cm, the thickness of each strip can be 0.52cm, and the height of the connecting line can be 15cm.

[0133] In traditional inflatable paddleboards, multiple segments of the side panels are connected by adhesive. However, in this invention, the main body 203 of the side sealing strip 20, composed of four strip sections, is interconnected by heat sealing, forming an adhesive-free main body 203. This design eliminates the need for adhesive, ensuring long-term airtightness and eliminating the risk of adhesive failure. Therefore, at least the first connecting seam 205, the second connecting seam 206, and the third connecting seam 207 are formed by heat sealing the material of the surface layer 201.

[0134] In other words, traditional inflatable paddleboards rely on adhesive to connect the strip sections, but adhesive deteriorates due to aging, moisture, and temperature fluctuations. Heat sealing fuses materials at the molecular level, forming a seamless, airtight joint with no weaknesses, higher mechanical strength, prevention of delamination, and resistance to environmental stresses such as water and heat. Using adhesive can lead to uneven bonding, creating micro-gaps where air can escape. Heat sealing creates a uniform, continuous seal, preventing any air leakage. Since there is no adhesive in the strip body 203, there is no risk of adhesive breakage, ensuring the inflatable paddleboard 100 remains airtight and durable for long-term use.

[0135] Furthermore, after heat-sealing the strip body 203 to the edge 110 of the top main layer 11 and the edge 120 of the bottom main layer 12, the remaining two ends 204 can be pressed together. Preferably, the two ends 204 can be pressed together by heat sealing, so that the four strip portions of the entire side seal strip 20 can be bonded without the use of glue. Alternatively, only the two ends 204 of the side seal strip 20 can be bonded together, while the rest of the side seal strip 20, i.e., the strip body 203, does not require the use of glue. Since the glue is only applied between the two laminated ends 204, no glue is applied between the side seal strip 20 and the edge 110 of the top main layer 11 and the edge 120 of the bottom main layer 12, thus ensuring a uniform and continuous seal without air leakage. Therefore, the fourth joint 208 formed after the heat sealing process can be formed by glue or by heat sealing.

[0136] The strip material 200 is obliquely cut to form the strip portion of the edge sealing strip 20 of the present invention. In the present invention, two strip materials can be cut from the same strip material 200, and one of the strip materials is flipped so that the two strip materials can respectively form strip portions with different yarn patterns, such as a first strip portion 21 and a second strip portion 22. Alternatively, oblique cutting lines that are mirror images of each other can be provided on two different strip materials 200 to obtain strip portions with different yarn patterns.

[0137] The inflatable paddle body 10 includes a head 101 and a tail 102. A first strip portion 21 and a second strip portion 22 are distributed on both sides of the head 101, and a third strip portion 23 and a fourth strip portion 24 are distributed on both sides of the tail 102. Each of the first strip portion 21, second strip portion 22, third strip portion 23, and fourth strip portion 24 includes a first yarn 2021 and a second yarn 2022 located between two surface layers 201. The first yarn 2021 and the second yarn 2022 of the first strip portion 21 define a first yarn pattern 210, and the first yarn 2021 and the second yarn 2022 of the second strip portion 22 define a second yarn pattern 220. The second yarn 2022 of the third stripe portion 23 defines the third yarn pattern 230, and the first yarn 2021 and the second yarn 2022 of the fourth stripe portion 24 define the fourth yarn pattern 240. For example... Figure 11 and Figure 12 As shown, the first yarn pattern 210 is different from the second yarn pattern 220, and the third yarn pattern 230 is different from the fourth yarn pattern 240. The first and second yarns in different strip sections intersect at different angles, so that each section can better fit the curved or bent edge of the head or tail of the body 10.

[0138] More specifically, the first yarn 2021 and the second yarn 2022 of each strip portion are inclined relative to the length direction of the edge sealing strip 20 along the periphery of the main body 10. The first strip portion 21 and the second strip portion 22 surrounding the head 101 of the main body 10 are not formed by folding continuous strips, but are divided into two parts and overlapped on the head 101 of the main body 10. The first yarn 2021 of the first strip portion 21 and the first yarn 2021 of the second strip portion 22 are not parallel, but form an angle, which can be an acute angle. Similarly, the second yarn 2022 of the first strip portion 21 and the second yarn 2022 of the second strip portion 22 are also not parallel, but form an angle, which can be an acute angle. The first yarn 2021 of the first strip portion 21 and the first yarn 2021 of the second strip portion 22 can be arranged in a mirror-image diagonal line, and the second yarn 2022 of the first strip portion 21 and the second yarn 2022 of the second strip portion 22 can also be arranged in a mirror-image diagonal line. In the mirror-image diagonal line, one line slopes upward from left to right, while the other line slopes downward in the same way, thus creating a balanced and reflective geometric appearance.

[0139] The yarns that are mirror images of each other can be symmetrical or asymmetrical. Preferably, the first yarn pattern 210 of the first strip portion 21 is symmetrical to the second yarn pattern 220 of the second strip portion 22, and the first yarn 2021 of the first strip portion 21 and the first yarn 2021 of the second strip portion 22 are symmetrical on both sides of the first connecting seam 205 between the first strip portion 21 and the second strip portion 22.

[0140] During heat sealing, unlike continuous strips, stress will be distributed along the bent edge 1011 of the head 101 of the main body 10, resulting in wrinkles and poor adhesion. In this embodiment of the invention, the first strip portion 21 and the second strip portion 22 will fit against the bent edge 1011 of the head 101 of the main body 10.

[0141] The third strip portion 23 and the fourth strip portion 24 surrounding the tail portion 102 of the main body 10 are not formed by folding a single continuous strip, but are divided into two parts and overlapped on the tail portion 102 of the main body 10. The first yarn 2021 of the third strip portion 23 and the first yarn 2021 of the fourth strip portion 24 are not parallel, but form an angle, which can be an acute angle. Similarly, the second yarn 2022 of the third strip portion 23 and the second yarn 2022 of the fourth strip portion 24 are not parallel, but form an angle, which can also be an acute angle. The first yarn 2021 of the third strip portion 23 and the first yarn 2021 of the fourth strip portion 24 can be arranged in a mirror diagonal line, and the second yarn 2022 of the third strip portion 23 and the second yarn 2022 of the fourth strip portion 24 can also be arranged in a mirror diagonal line. In the mirror diagonal line, one line slopes upward from left to right, and the other line slopes downward in the same way, forming a balanced and reversed geometric appearance.

[0142] Preferably, the third yarn pattern 230 of the third strip portion 23 is symmetrical to the fourth yarn pattern 240 of the fourth strip portion 24, and the first yarn 2021 of the third strip portion 23 and the first yarn 2021 of the fourth strip portion 24 are symmetrical on both sides of the third connecting seam 207 between the third strip portion 23 and the fourth strip portion 24.

[0143] like Figure 11 and Figure 12 As shown, the first strip portion 21 and the fourth strip portion 24 may have the same yarn pattern or different yarn patterns, and the second strip portion 22 and the third strip portion 23 may have the same yarn pattern or different yarn patterns.

[0144] During heat sealing, unlike continuous strips, stress will be distributed along the bent edge 1021 of the tail 102 of the main body 10, resulting in wrinkles and poor adhesion. However, the third strip portion 23 and the fourth strip portion 24 of this embodiment will fit against the bent edge 1021 of the tail 102 of the main body 10.

[0145] Traditional adhesive-bonded inflatable paddleboards allow for manual adjustment of the side strips to ensure they adhere to the board edge. This invention uses a heat-sealing device 410 to bond the side sealing strips 20 to the main body 10. The heat-sealing device 410 can only rotate mechanically and cannot adjust the left-right balance of the side sealing strips 20 on the main body 10; the alignment strips are pre-set to be relatively balanced on both sides. Specifically, the first strip 21 and the second strip 22 are pre-set on both sides of the head 101 of the main body 10, with different yarn patterns; the third strip 23 and the fourth strip 24 are pre-set on both sides of the tail 102 of the main body 10, with different yarn patterns.

[0146] By configuring the arrangement of the strip sections, the system compensates for the mechanical limitations of the heat sealing device 410, thus maintaining a uniform and strong bond along the entire edge of the board without the need for manual adjustment.

[0147] like Figure 6 , Figure 7 As shown, it is worth mentioning that the first connecting seam 205 is preferably located at the center of the bent edge 1011 of the head 101, and the third connecting seam 207 is preferably located at the center of the bent edge 1021 of the tail 102. Alternatively, the first connecting seam 205 may be located within 10 cm of the center of the bent edge 1011 of the head 101, and the third connecting seam 207 may be located within 10 cm of the center of the bent edge 1021 of the tail 102. The second connecting seam 206 and the fourth connecting seam 208 are preferably located in the central region of the side of the body 10. Specifically, the allowable deviation of the second connecting seam 206 and the fourth connecting seam 208 from the center of the side of the body 10 is within 10 cm.

[0148] like Figures 10 to 12 As shown, when the strip portion of the edge seal 20 is cut off from the strip material 200, the strip portion of the edge seal 20 has two end edges 209, which are bevels. Then the ends with bevels 209 are cut off, so that the strip portion has two vertical end edges 2041. This makes it easy for the two strip portions with vertical end edges 2041 to be aligned and overlapped for heat sealing.

[0149] In this invention, the four strip portions of the edge sealing strip 20 are preheated and welded together using high-frequency waves. Between the two bonded ends 204 after heat fusion, in a clockwise or counterclockwise direction, the end edge 2041 of the previous strip portion is located below or above the end edge 2041 of the next strip portion. This ensures the consistency of the layered pattern, maintains a uniform distribution of tension on the sealing strip, and reduces the risk of localized weak points. This appropriate end edge positioning ensures the smooth operation of the heat fusion device 410, prevents material blockage, and improves production efficiency.

[0150] In addition, such as Figures 13 to 15As shown, the inflatable paddle 100 may further include a decorative strip 30, which comprises two surface layers 301, a mesh layer 302, and a decorative pattern 303 formed on the outer surface layer of the two surface layers 301. The two surface layers 301 may be made of the same material as the two surface layers 201 of the side sealing strip 20, and the mesh layer 302 may be made of the same material as the mesh layer 202 of the side sealing strip 20, comprising a first yarn 3021 and a second yarn 3022. The mesh layer 302 of the decorative strip 30 may have a higher weight density than the mesh layer 202 of the side sealing strip 20; for example, the weight density of the mesh layer 302 of the decorative strip 30 may be 1000D (denier), while the weight density of the mesh layer 202 of the side sealing strip 20 may be 500D. The tensile strength and elasticity of the decorative strip 30 are reduced, while its rigidity and strength are increased.

[0151] Decorative patterns allow for customized branding and personalization, making the paddleboard visually distinctive. It allows brands to feature logos, color schemes, or promotional graphics, enhancing the product's marketability. The decorative strip 30 can be thicker than the side seal 20, thus enhancing strength together with the side seal 20 and reinforcing the sidewalls of the inflatable paddleboard 100. The mesh layer 302 improves tear resistance, preventing damage from external forces. By using the same material as the side seal 20, the decorative strip seamlessly integrates into the structure of the inflatable paddleboard 100, ensuring uniform performance without compromising flexibility.

[0152] In this embodiment, the decorative strip 30 can be pasted onto the edge sealing strip 20, and can be a single strip or composed of multiple interconnected strip portions. For example, the decorative strip 30 may include four strip portions, including two side strip portions 31 and two end strip portions 32. The first yarn 3021 and the second yarn 3022 of each side strip portion 31 may be slanted yarns, or the first yarn 3021 may be a horizontal yarn and the second yarn 3022 may be a vertical yarn. The first yarn 3021 and the second yarn 3022 of each end strip portion 32 are both slanted yarns to conform to the curved edge contour of the body 10.

[0153] like Figure 21 As shown, the decorative strip 30 may include four decorative strip components 33, two of which may be disposed on opposite sides of the head 101 of the main body 10, and the other two of which may be disposed on opposite sides of the tail 102 of the main body 10. The two decorative strip components 33 disposed on opposite sides of the head 101 of the main body 10 may use diagonal yarns and may have different yarn patterns, such as a mirrored pattern. Similarly, the two decorative strip components 33 disposed on opposite sides of the tail 102 of the main body 10 may also use diagonal yarns and may have different yarn patterns, such as a mirrored pattern.

[0154] As an alternative, the edge seal 20 can be omitted, and a decorative strip 30 with four decorative strip components 33 can be used directly as the edge banding strip. Its thickness is greater than that of the edge seal 20, and it can be used to cover the edge of the body 10.

[0155] See appendix Figures 16 to 20B According to an alternative embodiment, the side seal 20 includes a middle strip 25, an upper strip 26, and a lower strip 27, with the upper strip 26 integrated into the upper edge of the middle strip 25 and the lower strip 27 integrated into the lower edge of the middle strip 25. In this embodiment, the side seal 20 may be thicker than the side seal 20 of the above embodiment and may be used as a decorative strip with a decorative pattern 28.

[0156] In this embodiment, the center strip 25 can be implemented as a continuous integral strip with a horizontal first yarn 2021 and a vertical second yarn 2022, which can be obtained without obliquely cutting the strip material 200. Alternatively, the center strip can also include oblique first yarn 2021 and second yarn 2022. The upper strip 26 and lower strip 27 can be implemented as a mesh layer 202 having oblique first yarn 2021 and second yarn 2022. In addition, the upper strip 26 and lower strip 27 can be implemented as including multiple strip portions, such as four strip portions, with two adjacent strip portions having different yarn patterns, such as the four strip portions 21, 22, 23 and 24 of the side-sealing strip 20 in the above embodiment.

[0157] The use of the upper strip 26 and the lower strip 27, in conjunction with the inclined first yarn 2021 and the inclined second yarn 2022, allows the peripheral edge seal 20 to fit snugly against the edge contour of the main body 10. Alternatively, the middle strip can also be implemented as comprising multiple strip sections, namely, four interconnected strip sections 21, 22, 23 and 24 as described above.

[0158] As a typical example, the length of the side seal 20 of a regular inflatable paddleboard 100 can be 2m, the width of the side seal 20 can be 11cm, the thickness of each strip can be 0.7cm, and the height of the connecting line can be 15cm.

[0159] Therefore, the center strip 25 serves as a reinforcing base layer, ensuring stability and durability while preventing deformation. The upper and lower strips 26 and 27 provide additional support while maintaining flexibility. The inclined first and second yarns of the upper and lower strips enhance stretchability, allowing the edge sealing strip 20 to smoothly wrap around the curved edges of the inflatable paddle body. This prevents wrinkles, uneven tension, or stress concentration, thereby improving the aerodynamic and hydrodynamic characteristics of the paddle.

[0160] It is worth mentioning that the inflatable paddleboard 100 will include a nose cone 1, also known as a rocker arm nose, which serves multiple functions, primarily improving performance, stability, and usability in various water conditions. The nose cone 1 helps the paddleboard glide over waves rather than directly through them, thus reducing water resistance and preventing the head from being submerged. It improves control and maneuverability, especially in rough waters. The slightly raised nose cone 1 reduces the amount of water directly contacting the front of the board, thereby minimizing drag and allowing for smoother movement. This is particularly beneficial for cruise and racing paddleboards, helping them to move efficiently over long distances.

[0161] In this embodiment, the upturned head 1 is composed of the head 101 of the main body 10 and a portion of the side sealing strip 20 joined to the head 101. The top main body layer 11 of the remaining portion 2 of the inflatable paddle plate 100 has a horizontal top surface after inflation. The head 101 of the main body 10 is a portion with a bent edge 1011. The head 101 includes a top head layer 1012 and a bottom head layer 1013. The length L1 of the top head layer 1012 is less than the length L2 of the bottom head layer 1013. The top head layer 1012 and the bottom head layer 1013 are joined together with the first strip portion 21 and the second strip portion 22 of the side sealing strip 20 by heat sealing, so that after the inflatable paddle plate 100 is inflated, the upturned head 1 is formed due to the length difference between the top head layer 1012 and the bottom head layer 1013.

[0162] refer to Figure 2 The length of the upturned head 1, that is, the length L of the part of the inflatable paddleboard 100 that will be upturned after inflation, is about 60cm-120cm. The height of the upturned head 1 is defined in this invention as the distance between the bottom edge 2033 of the main body 203 of the side seal strip 20 and the bottom plane of the inflatable paddleboard 100, which is 3cm-20cm, preferably 5-15cm.

[0163] As an alternative implementation, when there is no difference in length between the top main body layer 11 and the bottom main body layer 12, i.e., they are equal, the inflatable paddleboard 100 may not have the aforementioned upturned head 1, i.e., it can be used as a flat plate.

[0164] See appendix Figures 23 to 34 The diagram illustrates a system 400 for manufacturing the inflatable paddle 100 of the present invention. More specifically, the system 400 includes a heat-sealing device 410 for heat-sealing the edge seal 20 to the edge 110 of the top body layer 11 and the edge 120 of the bottom body layer 12, a fixing device 420 for aligning the two body layers of the body 10 and temporarily fixing the two body layers of the body 10, a cutting device 430 for cutting strip material 200 to obtain strip portions of the edge seal 20, a joining device 440 for joining the strip portions of the edge seal 20 to obtain the edge seal 20, and an end-connecting device 450 for integrating the two ends 204 of the edge seal 20 together after the heat-sealing process.

[0165] like Figure 23 As shown, the cutting device 430 includes a conveying platform 431 for conveying the strip material 200 and a cutting assembly 432. The cutting assembly 432 includes a cutting blade 4321 for obliquely cutting a strip-shaped portion of the edge seal strip 20 from the strip material 200. The strip material 200 includes a horizontal first yarn 2021 and a vertical second yarn 2022. The cutting blade 4321 is obliquely arranged to cut a strip portion from the strip material 200 such that the obtained strip portion of the edge seal strip 20 includes the oblique first yarn 2021 and the oblique second yarn 2022.

[0166] Before integrating the strip portions into a single strip, the end portions with beveled edges 209 are cut off, thereby providing the strip component with two vertical end edges 2041 to facilitate alignment between the connecting ends of two adjacent strip portions. Alternatively, other suitable cutting devices can be used to cut the strip material 200 to obtain strip portions with vertical end edges 204. Alternatively, the strip material 200 can also be cut by hand to obtain strip portions with vertical end edges 204.

[0167] See Figure 24A , Figure 24B and Figure 24C The joining device 440 includes a pressure block 441 and a hot press 442. During the joining process, the pressure block 441, made of a thermally conductive material, is placed on the overlapping end edges 2041 of two adjacent strip portions. Then, the hot press 442 moves downward and welds the end edges 2041 of the two adjacent strip portions together by means of a high-frequency wave to form a joint between the two adjacent strip components, so that the material of the surface layer 202 of the two adjacent strip components (e.g., PVC or TPU material) is fused together.

[0168] It is worth mentioning that when welding the strip components to provide the edge seal 20, refer to Figure 6 and 7 In a clockwise or counterclockwise direction, the end edge 2041 of each preceding strip portion is located below the end edge 2041 of the next strip portion, or the end edge 2041 of each preceding strip portion is located above the end edge 2041 of the next strip portion, so that the heat sealing device 410 can operate smoothly without blockage or jamming.

[0169] like Figures 25A to 26As shown, before the edge seal 20 is heat-sealed to the body 10, the two main body layers of the body 10 are temporarily fixed by the fixing device 420. In this step, two material layers are processed, namely the top material layer 2001 and the bottom material layer 2002 stacked below the top material layer 2001, to provide the two main body layers 11 and 12 of the body 10.

[0170] More specifically, the fixing device 420 includes a support platform 421 for supporting two material layers 2001 and 2002 of the drawing material, and two pressure columns 422 for temporarily fixing the two material layers 2001 and 2002. Accordingly, the two material layers 2001 and 2002, connected by the connecting line 13, are matched in shape and size, then aligned and overlapped. The two pressure columns 422 are then driven to press downward toward the two material layers 2001 and 2002 to create a false weld connection point 2005 between the two material layers 2001 and 2002. This ensures that the two material layers 2001 and 2002 can be fixed and are not easily misaligned during subsequent heat sealing. The two pressure columns 422 are driven to move along the support platform 421 and press down at predetermined intervals to perform spot pressing, aligning the two edges of the two material layers 2001 and 2002. A virtual welding connection is then performed using a mechanism such as high-frequency electric welding, temporarily fixing the two material layers 2001 and 2002 together by spot pressing. The lamination process begins at the ends of the two material layers 2001 and 2002 and continues until approximately one-half to three-quarters of the total length, or about two-thirds.

[0171] The temporary fixing process can be completed automatically by a spot welding machine or manually. In addition, in another modified embodiment, the edges of the two material layers 2001 and 2002 can also be fixed by adhesive.

[0172] To form the upturned head 1 of the inflatable paddle 100, see Figures 27 to 29 The fixing device 420 also includes a wrinkling element 423 and a conveying assembly 424, which includes an upper conveyor 4241 and a lower conveyor 4242. The wrinkling element 423 wrinkles and creases the head of the top material layer 2001, such that the front end of the top material layer 2001 is positioned rearward relative to the front end of the bottom material layer 2002, and the front end portion 2004 of the bottom material layer 2002 is exposed and not covered by the top material layer 2001. Specifically, the bottom material layer 2002 can be fixed by adsorbing it with a lower vacuum cylinder, and the wrinkling element 423 can be specifically implemented as including an upper vacuum cylinder, which adsorbs the top material layer 2001 and is then driven to move towards the tail of the top material layer 2001, thereby creating a top material layer 2001 with wrinkled portions 2003.

[0173] Then, the remaining edges of the two material layers 2001 and 2002 are pressed and fixed. The upper conveyor 4241 and lower conveyor 4242 have different conveying speeds; specifically, the upper conveyor 4241 moves faster than the lower conveyor 4242. During the pressing process, the top material layer 2001 is temporarily fixed to the bottom material layer 2002, creating small wrinkles. The pressing continues until there are no more wrinkles on the top material layer. Then, the excess front portion 2004 of the bottom material layer is cut off. It can be understood that in the finished product, the bottom material layer 2002 without the front portion 2004 is the top main body layer 11, and its length is relatively reduced due to the cutting off of the front portion 2004. The top material layer 2001 is the bottom main body layer 12 of the finished product, so that the two main body layers 11 and 12, after inflation, form a structure with a raised head 1.

[0174] After the front end 2004 of the bottom material layer 2002 is cut off, the two front edges of the material layer will be aligned with each other, that is, the bent edges 1011 of the two main body layers 11 and 12 at the head 101 of the main body 10 will be aligned and overlapped with the same perimeter. Then, the edge seal 20 is heat-sealed to the edges of the main body layers 11 and 12. Since the edges between the two main body layers 11 and 12 are temporarily fixed, after inflation, the two temporarily fixed main body layers 11 and 12 will separate from each other, and the length difference between the main body layers 11 and 12 at the head 101 of the main body 10 will cause the head 101 of the inflatable paddle 100 to form a raised head 1 when inflated.

[0175] When the inflatable paddle 100 does not need to form the aforementioned upturned head 1, it is not necessary to wrinkle the top material layer 2001 or cut off the front end 2004 of the bottom material layer 2002.

[0176] See Figure 31The heat sealing device 410 includes a pressure roller assembly 411, a support platform 412, two hot air nozzles 413, and a vacuum generating unit for adsorbing the main body 10, thereby fixing the main body 10. During the heat sealing process, the edge seals 20 are respectively wrapped around the edges of the two main body layers 11 and 12 of the main body 10 to ensure that the edges of the two are not misaligned. The bottom main body layer 12, made of the top material layer 2001, is stacked on top of the top main body layer 11, made of the bottom material layer 2002. The edge seals 20 cover the edges of the two main body layers 11 and 12, and the main body layers 11 and 12 are fixed by the vacuum generating device. Then, the two main body layers 11 and 12 are placed between the two rollers of the pressure roller assembly 411, and the hot air nozzles 413 blow hot air toward the main body layers 11 and 12. The contact surface between the edge seals 20 and the two main body layers 11 and 12 is heated to the melting temperature, so that the drawing material of the edge seals 20 and the two main body layers 11 and 12 is in a molten state, controlling the heating rate and temperature uniformity, and avoiding local overheating or underheating. In addition, a laser positioning mechanism can be used to ensure the precise positioning of the two main layers 11 and 12, so that the heat sealing device 410 can move more evenly along the periphery of the main layers 11 and 12 and the side seal 20.

[0177] The hot air nozzle 413 has a nozzle temperature range of 400℃ to 800℃ and will not directly contact the side seal 20 during processing. The hot air pressure is 200MPa to 350MPa to melt the side seal 20. The distance between the upper and lower hot air nozzles 413 should be no less than 2mm to allow material to pass through; and the distance between each hot air nozzle 413 and the side seal 20 should not exceed 2mm. The processing speed is to complete a processing length of 50 to 140 meters within 10 minutes.

[0178] During the heat sealing process, the two ends 204 of the side seal 20 are not joined, but they can be glued together later. In this embodiment, as... Figure 32 As shown, the end connection device 450 includes heating elements 451 that are driven to be placed at positions corresponding to the two ends 204 of the side seal strip to weld them together to form a fourth connection seam 208, thereby heat-sealing the two ends 204 of the side seal strip 20 and further joining the two ends 204 of the side seal strip 20 to the two main body layers 11, 12. The heating elements 451 may also be supplied with hot air.

[0179] In addition, such as Figure 30As shown, before the heat sealing process, a hole 111 is formed on the top main body layer 11, through which the valve seat 151 of the inflation valve 15 can be positioned in the inflation chamber 14. After the heat sealing process, the valve body 152 can be installed on the valve seat 151. Furthermore, one or more sealing layers can be provided at the hole 111 to enhance the sealing effect. The inner sealing layer, whose material configuration can be the same as the decorative strip 30, has a larger thickness to enhance the cushioning effect. The two outer sealing layers 153 can have the same material configuration as the side seal strip 20. (See Figures 20 to 20). Figure 33 As shown, an outer sealing layer 153 is provided on the outer surface between the valve body 152 and the top main body layer 11. It can be provided with a smaller thickness relative to the decorative strip 30 to prevent air leakage when the valve body 152 is installed on the valve seat 151.

[0180] like Figure 35 As shown, the valve seat 151 includes a seat body 1511 and a sealing ring 1512 integrally extending from the seat body 1511. The valve body 152 is threaded onto the seat body 1511. The diameter of the sealing ring 1512 is larger than the diameter of the hole 111 in the top main body layer 11 to ensure a sealing effect. Before heat sealing the side seal 20, the valve seat 151 is inserted into the space between the two main body layers 11 and 12 from one side of the main body 10. During the heat sealing of the side seal 20, the support platform 412 is provided with a placement groove for placing the valve seat 151 to ensure that the main body 10 is placed horizontally. After the side seal 20 is heat sealed, the valve body 152 is installed onto the valve seat 151 through the hole 111 in the top main body layer 11.

[0181] like Figure 34 As shown, accessory 16 can be installed onto the main body 10 to provide an inflatable paddleboard 100 as a finished product.

[0182] It should be noted that in the apparatus and method of this application, the components or steps in different embodiments can be disassembled and / or recombined without departing from the principle of the present invention. These disassemblies and / or recombinations should be considered as included within the inventive concept of this application.

Claims

1. An inflatable paddleboard, characterized in that, include: The main body comprises two main layers; and A side seal is integrally formed with the two main body layers by heat sealing to create an air cavity between the two main body layers and the side seal.

2. The inflatable paddleboard of claim 1, wherein the edge seal comprises one or more strip portions that cover the edges of the two main body layers.

3. The inflatable paddleboard according to claim 1, wherein the side sealing strip comprises a plurality of interconnected strip portions.

4. The inflatable paddleboard according to claim 3, wherein the plurality of said strip portions are integrally integrated without the need to use glue to bond two adjacent said strip portions.

5. The inflatable paddleboard according to claim 3, wherein, prior to heat-sealing the side seal with the two main body layers, a plurality of strip portions are joined together to form the side seal, the side seal comprising two ends and a strip body located between the two ends, wherein, The two adjacent strip portions of the main body are not glued together.

6. The inflatable paddleboard according to claim 5, wherein the two ends of the side seal are two sealing ends, and after the heat sealing process between the side seal and the two bodies, the two sealing ends are joined together, and the joining method includes heat sealing or adhesive bonding.

7. The inflatable paddleboard according to any one of claims 3 to 6, wherein each strip portion of the side seal comprises two face layers and a mesh layer located between the two face layers, each mesh layer comprising a plurality of mutually perpendicular first yarns and second yarns.

8. The inflatable paddle plate according to claim 7, wherein the plurality of first yarns and the plurality of second yarns are respectively inclined relative to the length direction of the edge seal.

9. The inflatable paddle plate according to claim 8, wherein the inclination angle between the first yarn and the length direction of the edge seal is 30° to 60°.

10. The inflatable paddleboard according to claim 7, wherein a decorative strip is attached to the side seal, the decorative strip comprising a plurality of strip portions, each strip portion comprising a plurality of mutually perpendicular first yarns and second yarns, wherein the first yarns and second yarns in one or more strip portions are inclined yarns relative to the length direction of the side seal.

11. The inflatable paddleboard according to any one of claims 3 to 6, wherein the body comprises a head and a tail, wherein the head and the tail are each provided with two strip portions having different yarn patterns.

12. The inflatable paddleboard according to any one of claims 1 to 6, wherein the main body comprises a plurality of connecting lines connecting two of the main body layers, and the width of the portion of the side seal not heat-sealed to the two main body layers is less than the height of the connecting lines between the two main body layers, wherein, The connecting line between the edges of the two main layers is removed or cut in the middle.

13. The inflatable paddleboard according to claim 11, wherein the first yarns of the two strip portions on both sides of the head and the tail are arranged in a mirror-image oblique line.

14. The inflatable paddleboard of claim 5, wherein, between the two ends, in a clockwise or counterclockwise direction, the end edge of each preceding strip portion of the strip body is located below or above the end edge of the next strip portion.

15. The inflatable paddleboard according to claim 1, wherein the side sealing strip comprises a middle strip, an upper strip integrated on the upper edge of the middle strip, and a lower strip integrated on the lower edge of the middle strip.

16. The inflatable paddleboard according to claim 15, wherein the middle strip, the upper strip, and the lower strip each comprise two layers and a mesh layer located between the two layers, wherein, Each mesh layer includes multiple mutually perpendicular first and second yarns, wherein the first and second yarns in the upper and lower layers are inclined yarns relative to the length direction of the edge seal strip.

17. The inflatable paddleboard according to any one of claims 1 to 6, wherein the two main body layers are made of PVC or TPU filament material, wherein a plurality of connecting lines are connected between the two main body layers, the surface layer of each strip portion of the side seal is made of PVC or TPU, and the mesh layer is made of a fiber material selected from polyester fiber, nylon fiber, and aramid fiber.

18. An inflatable paddleboard, characterized in that, include: A body, comprising a head, the head comprising a top head layer and a bottom head layer; as well as The side seal is heat-sealed to the main body to form an inflation cavity, wherein the length of the top layer is less than the length of the bottom layer, so that the inflation paddle forms a raised head when the inflation cavity is inflated.

19. The inflatable paddleboard of claim 18, wherein the body comprises two body layers, the top head layer and the bottom head layer are each part of the two body layers, and the side seal is integrally formed with the two body layers to form the inflation cavity.

20. The inflatable paddleboard according to claim 19, wherein when the inflation chamber is inflated, the top head layer and the bottom head layer are upwardly extending arcuate layers to form the upturned head.

21. The inflatable paddleboard according to claim 19, wherein both the top and bottom layers include bent edges, and during the heat sealing process of the two main layers with the side seal, the bent edges of the top and bottom layers are aligned and overlap side-to-side, the side seal wraps around the bent edges of the top and bottom layers, and after the heat sealing process is completed, the top and bottom layers are spaced apart, such that the inflatable paddleboard forms the upturned head when the inflation chamber is inflated.

22. The inflatable paddleboard of claim 19, wherein both the top and bottom layers include bent edges, wherein during the heat sealing process of the two main layers with the side seal, the bent edges of the top and bottom layers are aligned with each other and have the same perimeter, and after the heat sealing process, the top and bottom layers are spaced apart, such that the inflatable paddleboard forms the upturned head when the inflation cavity is inflated.

23. The inflatable paddleboard according to claim 19, wherein before the heat sealing process, the top material layer and the bottom material layer are temporarily fixed, and the top material layer is folded over the bottom material layer to expose the front end portion of the bottom material layer, wherein, The front end portion of the bottom material layer is cut off so that the top material layer and the bottom material layer provide two main body layers, the two main body layers including a top main body layer and a bottom main body layer, wherein the bottom material layer forms the top main body layer and the top material layer forms the bottom main body layer.

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