Sheet, inflated product, sheet manufacturing apparatus, and sheet manufacturing method

Abstract

The present invention provides an improved sheet, an inflatable product at least partially made from the sheet, and an apparatus and method for manufacturing the sheet. The sheet comprises a fabric layer, a bonding layer and a base material layer, the base material layer comprises a first layer and a second layer, the first layer comprises a first high polymer material, the second layer comprises a second high polymer material, and the melting point of the first high polymer material is higher than that of the second high polymer material, the base material layer is formed by converging a first high polymer material with flowability and a second high polymer material with flowability, and the fabric layer is attached to the first layer through the bonding layer. When the sheet is used for welding, the air tightness of an inflatable product can be better, the air leakage phenomenon of the inflatable product is reduced, the yield is improved, and the bonding strength between the first layer and the second layer of the base material layer of the sheet is high.

Description

Technical Field

[0001] The present invention generally relates to the field of sheet material manufacturing. In particular, the present invention relates to a sheet material, an inflatable product at least partially made of the sheet material, and a manufacturing device and a manufacturing method of the sheet material. Background Art

[0002] When camping in the wild, because the ground is cold and hard, campers often need an inflatable pad that is easy to carry to insulate and provide cushioning. The inflatable pad usually includes a top sheet and a bottom sheet connected to each other to form an inflatable chamber. The top sheet and bottom sheet of existing inflatable pads are usually composite sheets. For example, the top sheet and the bottom sheet can be a composite sheet formed by bonding a fabric to a TPU film, wherein the fabric is the outer layer and the TPU film is the inner layer. The function of the TPU film is to form the inflatable pad into a closed air chamber. Since the fabric is breathable and cannot prevent the circulation of air, the presence of the TPU film during inflation allows the gas to be retained inside the product, thereby preventing air leakage. The function of the fabric is to enhance the tactile feel of the surface of the inflatable pad when the human body contacts the inflatable pad, thereby enhancing the comfort level of the human body contacting the fabric.

[0003] In order to facilitate the storage and carrying of the inflatable cushion, the inflatable cushion is often required to be relatively light and thin. Therefore, under the premise of ensuring that the inflatable cushion does not leak, the thickness of the TPU film is as thin as possible. At present, the TPU film in most composite sheets of inflatable cushions is a film formed by one or more layers of TPU materials with the same melting point, which is usually called single-temperature TPU film.

[0004] When making an inflatable cushion, technicians usually place the top sheet formed by fabric laminating a single-temperature TPU film and the bottom sheet formed by fabric laminating a single-temperature TPU film together on a welding device. The fabric of the top sheet is upward and the single-temperature TPU film is downward. The single-temperature TPU film of the bottom sheet is upward and the fabric is downward. The top sheet is placed above the bottom sheet. As a result, the single-temperature TPU film of the top sheet and the single-temperature TPU film of the bottom sheet are placed facing each other. The technician uses a welding device to weld the single-temperature TPU film of the top sheet and the single-temperature TPU film of the bottom sheet together. The outer fabric of the top sheet and the outer fabric of the bottom sheet are both placed facing outward and are not welded with other materials.

[0005] When the composite sheet containing a single-temperature TPU film and a fabric is used to make an inflatable cushion product, there are high requirements for the precision of the production equipment / mold and the production process of the inflatable cushion. Specifically, when the single-temperature TPU film of the top sheet and the single-temperature TPU film of the bottom sheet are welded to each other, there is heat loss when the heat of the welding equipment is transferred inside the welding equipment, and the heat loss is usually difficult to measure accurately and there is volatility. Therefore, the actual welding temperature often inevitably deviates from the set welding temperature to a certain extent, and the deviation fluctuates, making it difficult to control and predict the deviation. On the other hand, a mold is used when welding the single-temperature TPU film of the top sheet and the single-temperature TPU film of the bottom sheet. The technicians usually install the mold above and below the welding equipment, and the heat of the welding equipment is transferred to the mold, and the heat is transferred to the single-temperature TPU film through the mold, thereby welding the single-temperature TPU film of the top sheet and the bottom sheet. The shapes, materials, sizes, and thicknesses of various molds are different, so the thermal conductivity of each mold may also be different, which will further cause the actual welding temperature to deviate from the set welding temperature. In addition, since the room temperature may be different during each production, the ambient temperature around the welding equipment may be different, which may also cause the actual welding temperature to deviate from the set welding temperature. Finally, the welding time controlled by the technician may also deviate. Too long welding time will cause the welding temperature to be too hot, and too short welding time will cause the welding temperature to be too cold.

[0006] Higher welding temperature or longer welding time may cause the single-temperature TPU film to melt over a large area or completely melt, and the small holes or blank areas formed may cause air leakage when the single-temperature TPU film is applied to the inflatable cushion; lower welding temperature or shorter welding time may cause the single-temperature TPU film of the top and bottom sheets of the inflatable cushion to be almost not melted, and the top and bottom sheets cannot be adhered or the degree of adhesion is poor, and a completely enclosed air chamber cannot be formed, causing the inflatable cushion to leak during use and become unusable.

[0007] In summary, when using the composite sheet formed by laminating the single-temperature TPU film and the fabric to make an inflatable cushion, it is difficult to completely and accurately control the welding temperature and welding time due to the inherent limitations of the equipment, environment and manual operation. Whether it is a higher welding temperature or a longer welding time, or a lower welding temperature or a shorter welding time, it will eventually cause the inflatable cushion to leak, resulting in product defects and reducing the qualified rate of finished products. Summary of the invention

[0008] The object of the present invention is to solve the problems existing in the above-mentioned prior art and to provide an improved sheet material, an inflatable product at least partially made of the sheet material, and a manufacturing device and a manufacturing method of the sheet material.

[0009] To this end, according to a first aspect of the present invention, a sheet material is provided, comprising a fabric layer, an adhesive layer and a substrate layer, the substrate layer comprising a first layer and a second layer, the first layer comprising a first polymer material, the second layer comprising a second polymer material, the melting point of the first polymer material being higher than the melting point of the second polymer material, wherein the substrate layer is formed by the confluence of the fluid first polymer material and the fluid second polymer material, and the fabric layer is bonded to the first layer via the adhesive layer.

[0010] Since the first polymer material of the first layer and the second polymer material of the second layer of the sheet according to the present invention have a certain melting point difference, when the sheet is welded, the welding temperature is set between the melting point of the first polymer material and the melting point of the second polymer material, so that the second layer with a lower melting point can be melted for welding, while the first layer with a higher melting point can maintain structural integrity without melting and air permeability. If there is a certain deviation between the actual welding temperature and the set welding temperature due to the temperature deviation of the welding equipment, the difference in the thermal conductivity of the mold, the difference in the ambient temperature, the deviation of the welding time or other reasons, as long as the actual welding temperature is still between the melting point of the first polymer material and the melting point of the second polymer material, the second layer can still be melted for welding, and the first layer can be kept intact and airtight. Therefore, when the substrate layer of the sheet includes the above-mentioned first layer and the second layer, the sensitivity of the product quality to the welding temperature will be greatly reduced. In other words, even if there is a deviation in the welding temperature, whether it is an upward deviation or a downward deviation, as long as the temperature after the deviation is still between the melting point of the first polymer material and the melting point of the second polymer material, the inflatable product produced is still a qualified product. Therefore, the use of the sheet material of the present invention for welding can greatly reduce the negative impact of welding temperature deviation and welding time deviation on product quality, thereby reducing the leakage problem of inflatable products, making the air tightness of inflatable products better, improving the yield rate, reducing production costs, and at the same time, the welding operation of technicians becomes simpler. Moreover, the substrate layer of the sheet material is formed by the confluence of a fluid first polymer material and a fluid second polymer material, and no bubbles are formed between the first layer and the second layer. The bonding strength between the two is high and not easy to separate. The above-mentioned substrate layer including the first layer and the second layer can have roughly the same thickness as the substrate layer of the current single-temperature TPU film with only one layer, so the sheet material of the present invention still maintains the characteristics of being light and thin. Furthermore, compared with the substrate layer of the single-temperature TPU film, the substrate layer including the first layer and the second layer has lower requirements for welding operations, can withstand a wider range of welding temperature changes and welding time changes, and does not affect product quality, so the substrate layer including the first layer and the second layer can even be made thinner than the substrate layer of the single-temperature TPU film.

[0011] According to the above technical concept, the first aspect of the present invention may further include any one or more of the following optional forms.

[0012] In some optional forms, the substrate layer includes an intermediate layer between the first layer and the second layer, and the intermediate layer includes a mixture of a first polymer material and a second polymer material.

[0013] In some optional forms, each of the first polymer material and the second polymer material is composed of one or more of thermoplastic polyurethane elastomer, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride or polyurethane.

[0014] In some optional forms, the first polymer material and the second polymer material are both thermoplastic polyurethane elastomers.

[0015] In some optional forms, the melting point of the first polymer material is at least 15° C. higher than the melting point of the second polymer material.

[0016] In some optional forms, the adhesive layer is formed of polyurethane adhesive.

[0017] In some optional forms, the polyurethane adhesive is solvent-based PU adhesive, water-based PU adhesive or PUR hot melt adhesive.

[0018] In some optional forms, the fabric layer includes a polyurethane coating on the side facing the adhesive layer.

[0019] In some optional forms, the first layer has a Shore A hardness ranging from 80 HA to 98 HA, and the second layer has a Shore A hardness ranging from 75 HA to 95 HA.

[0020] In some optional forms, a ratio of the thickness of the first layer to the thickness of the second layer ranges from 1:1 to 1:4.

[0021] In some optional forms, the thickness of the substrate layer ranges from 0.01 mm to 0.40 mm.

[0022] According to a second aspect of the present invention, there is provided an inflatable product, at least a portion of which is made from the sheet material according to the first aspect of the present invention.

[0023] The second aspect of the present invention may further include any one or more of the following optional forms.

[0024] In some optional forms, the inflatable product is an inflatable cushion, which includes a top sheet and a bottom sheet, wherein the top sheet and the bottom sheet are connected to each other to jointly define an inflatable chamber, wherein the top sheet and the bottom sheet are made of the sheet material.

[0025] In some optional forms, the inflatable cushion also includes a connecting sheet, which is arranged between the top sheet and the bottom sheet in the inflatable chamber and includes a plurality of first welding areas and a plurality of second welding areas, wherein the plurality of first welding areas and the plurality of second welding areas are staggered with each other, the plurality of first welding areas are welded to the top sheet, and the plurality of second welding areas are welded to the bottom sheet.

[0026] In some optional forms, the inflatable cushion also includes at least one thermal insulation sheet, which is disposed in the inflatable chamber, and each thermal insulation sheet includes a polymer substrate and a metal coating plated on at least one of the front and back surfaces of the polymer substrate.

[0027] In some optional forms, the inflatable cushion further comprises a plurality of tension members, a top edge and a bottom edge of each tension member being welded to the top sheet and the bottom sheet respectively.

[0028] In some optional forms, the tension member is made of the sheet material, or is made of a substrate layer of the sheet material.

[0029] In some optional forms, the inflatable cushion further comprises a foam core, and the top sheet and the bottom sheet are respectively attached to the top surface and the bottom surface of the foam core.

[0030] In some optional forms, the foam core includes a plurality of regularly distributed open cells or a plurality of regularly distributed grooves.

[0031] In some optional forms, the inflatable cushion also includes side panels, the periphery of the top panel is connected to the top edge of the side panels, and the periphery of the bottom panel is connected to the bottom edge of the side panels, so that the top panel, the bottom panel and the side panels jointly define the inflatable chamber.

[0032] According to a third aspect of the present invention, a sheet manufacturing device is provided, the sheet manufacturing device comprising: a first feeding device and a second feeding device, the first feeding device and the second feeding device being configured to respectively supply a first polymer material with fluidity and a second polymer material with fluidity, the melting point of the first polymer material being higher than the melting point of the second polymer material; an extrusion molding device, the extrusion molding device comprising a first flow channel, a second flow channel, a confluence chamber and a material outlet, the first flow channel, the second flow channel and the material outlet being respectively connected to the confluence chamber, the first flow channel and the second flow channel being configured to respectively supply the first polymer material with fluidity from the first feeding device and the second polymer material with fluidity from the second feeding device a second polymer material introduced into the confluence chamber, the fluid first polymer material and the fluid second polymer material are suitable for confluence in the confluence chamber and extruded from the material outlet to form a first material sheet, the first material sheet includes a first layer and a second layer, the first layer includes the first polymer material, and the second layer includes the second polymer material; a third feeding device, the third feeding device is configured to supply a fabric sheet; and a bonding device, the bonding device is configured to bond the fabric sheet to the first layer of the first material sheet through an adhesive material to form a second material sheet, the second material sheet includes a fabric layer formed by the fabric sheet, an adhesive layer formed by the adhesive material, and a substrate layer formed by the first material sheet.

[0033] The third aspect of the present invention may further include any one or more of the following optional forms.

[0034] In some optional forms, the laminating device is configured to apply the adhesive material on the first layer of the fabric sheet or the first material sheet before laminating the fabric sheet with the first material sheet.

[0035] In some optional forms, the sheet material manufacturing apparatus further comprises a pressing device, wherein the pressing device is configured to press the first web conveyed from the material outlet, wherein the pressing comprises flattening and / or embossing.

[0036] In some optional forms, the sheet material manufacturing apparatus further comprises a cooling device configured to cool the pressed first web.

[0037] In some optional forms, the sheet material manufacturing equipment further includes a trimming device; the sheet material manufacturing equipment is configured to convey the cooled first web to the trimming device for trimming and convey the trimmed first web to the bonding device.

[0038] In some optional forms, the sheet manufacturing equipment also includes a winding device and an unwinding device, the winding device is configured to wind the trimmed first sheet into a first sheet roll, and the unwinding device is configured to unwind the first sheet roll and convey the trimmed first sheet to the bonding device.

[0039] In some optional forms, the sheet material manufacturing equipment further includes a trimming device, the sheet material manufacturing equipment is configured to convey the cooled first web to the bonding device to form the second web, and the trimming device is configured to trim the second web.

[0040] In some optional forms, the sheet material manufacturing apparatus is configured to deliver the first material sheet from the material outlet to the bonding device, and the bonding device is configured to apply the adhesive material on the fabric sheet before bonding the fabric sheet to the first material sheet.

[0041] In some optional forms, the sheet material manufacturing apparatus further comprises a pressing device, wherein the pressing device is configured to press the second web conveyed from the laminating device, wherein the pressing comprises flattening and / or embossing.

[0042] In some optional forms, the laminating device is further configured to press the second web while laminating the coated fabric sheet with the first web to form the second web, wherein the pressing includes flattening and / or embossing.

[0043] In some optional forms, the sheet material manufacturing apparatus further comprises a cooling device configured to cool the pressed second web.

[0044] In some optional forms, the sheet material manufacturing apparatus further comprises a trimming device configured to trim the cooled second web.

[0045] According to a fourth aspect of the present invention, a sheet manufacturing method is provided, the sheet manufacturing method comprising: providing a first polymer material with fluidity, a second polymer material with fluidity, an adhesive material and a fabric sheet, the melting point of the first polymer material being higher than the melting point of the second polymer material; forming a first sheet by merging the first polymer material with fluidity and the second polymer material with fluidity, the first sheet comprising a first layer and a second layer, the first layer comprising the first polymer material, and the second layer comprising the second polymer material; and bonding the fabric sheet to the first layer of the first sheet via the adhesive material to form a second sheet, the second sheet comprising a fabric layer formed by the fabric sheet, an adhesive layer formed by the adhesive material and a substrate layer formed by the first sheet.

[0046] The fourth aspect of the present invention may further include any one or more of the following optional forms.

[0047] In some optional forms, the first web includes an intermediate layer between the first layer and the second layer, and the intermediate layer includes a mixture of a first polymer material and a second polymer material.

[0048] In some optional forms, the first polymer material and the second polymer material are both thermoplastic polyurethane elastomers.

[0049] In some optional forms, the sheet material manufacturing method further includes applying the adhesive material on the fabric sheet or the first layer of the first material sheet before attaching the fabric sheet to the first material sheet.

[0050] In some optional forms, the sheet material manufacturing method further comprises pressing the first web after forming the first web, wherein the pressing comprises flattening and / or embossing.

[0051] In some optional forms, the sheet manufacturing method also includes cooling the pressed first web.

[0052] In some optional forms, the sheet material manufacturing method further includes trimming the cooled first web, and bonding the fabric sheet to the trimmed first web via the adhesive material to form a second web.

[0053] In some optional forms, the sheet material manufacturing method further includes rolling up the trimmed first web into a first web roll, and unwinding the first web roll to provide the trimmed first web for bonding with the fabric sheet.

[0054] In some optional forms, the sheet material manufacturing method further includes trimming the second material sheet after bonding the fabric sheet to the first material sheet via the adhesive material to form the second material sheet.

[0055] In some optional forms, the sheet material manufacturing method further includes coating the adhesive material on the fabric sheet and attaching the coated fabric sheet to the first web sheet to form the second web sheet.

[0056] In some optional forms, the sheet manufacturing method further comprises pressing the second web while laminating the coated fabric sheet with the first web to form the second web or after forming the second web, wherein the pressing comprises flattening and / or embossing.

[0057] In some optional forms, the sheet manufacturing method also includes cooling the pressed second web.

[0058] In some optional forms, the sheet material manufacturing method further includes trimming the cooled second web.

[0059] The welding operation of the sheet material according to the present invention is simpler and easier to control, and the bonding strength between the layers of the sheet material is high and not easy to separate. Accordingly, the inflatable product at least partially made of the sheet material according to the present invention will be easy to manufacture and have a high yield, thereby reducing the manufacturing cost, and the obtained inflatable product has good mechanical properties and air tightness. The sheet material manufacturing device and sheet material manufacturing method according to the present invention can manufacture a sheet material with the above advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Other features and advantages of the present invention will be better understood through the following detailed description of the optional embodiments in conjunction with the accompanying drawings, in which the same reference numerals identify the same or similar components, wherein:

[0061] Figure 1 is a schematic perspective view of a first embodiment of an inflatable cushion according to the present invention;

[0062] Figure 2 yes Figure 1 A schematic exploded view of an inflatable cushion;

[0063] Figure 3A yes Figure 1 A schematic cross-sectional view of an inflatable cushion;

[0064] Figure 3B yes Figure 1 A schematic diagram of the structure of the heat insulation sheet of the inflatable cushion;

[0065] Figure 4 is a schematic exploded view of a second embodiment of an inflatable cushion according to the present invention;

[0066] Figure 5 is a schematic exploded view of a third embodiment of an inflatable cushion according to the present invention;

[0067] Figure 6 is a schematic exploded view of a fourth embodiment of an inflatable cushion according to the present invention;

[0068] Figure 7 is a schematic exploded view of a fifth embodiment of an inflatable cushion according to the present invention;

[0069] Figure 8 is a schematic exploded view of a sixth embodiment of an inflatable cushion according to the present invention;

[0070] Fig. 9 is a schematic exploded view of a seventh embodiment of an inflatable cushion according to the present invention;

[0071] Fig.10is a schematic perspective view of an eighth embodiment of an inflatable cushion according to the present invention;

[0072] Fig.11 yes Fig.10 A schematic exploded view of an inflatable cushion;

[0073] Fig.12 is a schematic structural diagram of an exemplary embodiment of a sheet according to the present invention;

[0074] Fig.13A and Fig. 13B Schematic diagrams of a first part and a second part of a first embodiment of a sheet material manufacturing apparatus according to the present invention, respectively;

[0075] Fig.14A yes Fig.13A A partial enlarged view of a first portion of the sheet material manufacturing equipment;

[0076] Fig. 14B yes Fig.13A Another partial enlarged view of the first portion of the sheet material manufacturing equipment;

[0077] Fig.15 is a schematic diagram of a second portion of a second embodiment of a sheet material manufacturing apparatus according to the present invention;

[0078] Fig.16 is a schematic diagram of a third embodiment of a sheet material manufacturing apparatus according to the present invention;

[0079] Fig.17 is a schematic diagram of a fourth embodiment of a sheet material manufacturing apparatus according to the present invention;

[0080] Fig.18 is a schematic diagram of a fifth embodiment of a sheet material manufacturing apparatus according to the present invention; and

[0081] Fig.19 is a schematic flow chart of an exemplary embodiment of a sheet manufacturing method according to the present invention. DETAILED DESCRIPTION

[0082] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely exemplary of specific ways of implementing and using the present invention, and do not limit the scope of the present invention. When describing, the structural positions of the various components, such as the upper, lower, top, bottom, etc., are not absolute, but relative. When the various components are arranged as shown in the figure, these directional expressions are appropriate, but when the positions of the various components in the figure change, these directional expressions also change accordingly. The terms "first", "second", etc. are only used for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the present invention, unless otherwise expressly provided, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, it can also be a detachable connection, or it can be connected in one piece; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0083] In this article, an "inflatable product" has at least one inflatable chamber for inflation. When the pressure of the gas (e.g., air) in the inflatable chamber reaches a desired value, the inflatable product is in an inflated state and maintains a certain shape; and when the gas in the inflatable chamber of the inflatable product is discharged, the inflatable product is in a deflated state, and the volume of the inflatable product is reduced relative to when it is in the inflated state, thereby facilitating the storage of the inflatable product. Inflatable products include, but are not limited to, inflatable cushions, inflatable pools, inflatable toys, inflatable sofas, inflatable tents, and other products.

[0084] Figures 1 to 11 Several exemplary embodiments of an inflatable cushion according to the present invention are shown.

[0085] Reference Figures 1 to 11 , Figures 1 to 11 The inflatable cushion 100 in each embodiment includes a top sheet 102 and a bottom sheet 104, which are connected to each other to define an inflatable chamber 106. The top sheet 102 is used for a user to sit or lie down, and the bottom sheet 104 is used to contact the ground. The top sheet 102 and the bottom sheet 104 can have substantially the same shape and size, and the outer periphery of the top sheet 102 and the outer periphery of the bottom sheet 104 are welded to each other by, for example, high frequency welding, hot pressure welding, or ultrasonic welding to define an inflatable chamber 106 between the top sheet 102 and the bottom sheet 104.

[0086] It is expected that the outer sides of the top sheet 102 and the bottom sheet 104 of the inflatable cushion 100 facing away from the inflatable chamber 106 can provide a more comfortable touch; the inner sides of the top sheet 102 and the bottom sheet 104 opposite to the outer sides are easy to weld for the manufacture of the inflatable cushion 100; and the top sheet 102 and the bottom sheet 104 still have good mechanical strength and good air tightness after being welded during the process of manufacturing the inflatable cushion 100, so that the inflatable cushion 100 maintains a predetermined shape in the inflated state and does not leak.

[0087] To this end, the present invention provides an improved sheet material. Fig.12 An exemplary embodiment of a sheet material according to the invention is shown.

[0088] Reference Fig.12 The sheet material 200 may include: a fabric layer 202, an adhesive layer 204 and a substrate layer 206. The substrate layer 206 includes a first layer 208 and a second layer 210. The first layer 208 includes a first polymer material, and the second layer 210 includes a second polymer material. The melting point of the first polymer material is higher than the melting point of the second polymer material. The substrate layer 206 is formed by the confluence of a fluid / molten first polymer material and a fluid / molten second polymer material, and the fabric layer 202 is attached to the first layer 208 through the adhesive layer 204.

[0089] Figures 1 to 11 The top sheet 102 and the bottom sheet 104 of the middle inflatable cushion 100 can be made of the sheet material 200. The sheet material of the present invention will be mainly introduced below by taking the sheet material used to make an inflatable cushion as an example. It is understandable that the sheet material of the present invention can also be used to make other inflatable products or non-inflatable products besides the inflatable cushion.

[0090] When manufacturing the inflatable cushion 100, the fabric layer 202 will be located on the outside of the top sheet 102 and the bottom sheet 104 to provide a more comfortable touch; the second layer 210 of the substrate layer 206 formed by a second polymer material with a lower melting point will be located on the inside of the top sheet 102 and the bottom sheet 104 for welding; and the first layer 208 of the substrate layer 206 formed by a first polymer material with a higher melting point will be located between the fabric layer 202 and the second layer 210 and form an airtight barrier in the top sheet 102 and the bottom sheet 104.

[0091] When welding the top sheet 102 and the bottom sheet 104, such as welding the top sheet 102 and the bottom sheet 104 to each other or welding the top sheet 102 or the bottom sheet 104 to other components in the gas chamber 106 (other components in the gas chamber 106 will be further described below), the welding temperature can be set between the melting point of the first polymer material and the melting point of the second polymer material, so that the second layer 210 with a lower melting point can be melted for welding, while the first layer 208 with a higher melting point is still airtight due to maintaining structural integrity. As a result, the sensitivity of product quality to welding temperature will be greatly reduced. In other words, even if there is a deviation in the welding temperature, whether it is an upward deviation or a downward deviation, as long as the temperature after the deviation is still between the melting point of the first polymer material and the melting point of the second polymer material, the product produced is still a qualified product. Therefore, using the sheet material of the present invention for welding can greatly reduce the negative impact of welding temperature deviation and welding time deviation on product quality, thereby reducing the leakage problem of inflatable products, making the airtightness of inflatable products better, increasing the yield rate, and reducing production costs. At the same time, the welding operation of technicians also becomes simpler.

[0092] Moreover, the substrate layer 206 is formed by the confluence of the first polymer material with fluidity and the second polymer material with fluidity, and no bubbles are formed between the first layer 208 and the second layer 210, and the bonding strength between the two is high and not easy to separate. The substrate layer 206 formed by the confluence of the first polymer material with fluidity and the second polymer material with fluidity also includes an intermediate layer 212 between the first layer 208 and the second layer 210, and the intermediate layer 212 includes a mixture of the first polymer material and the second polymer material to make the first layer 208 and the second layer 210 more firmly bonded. Optionally, the substrate layer 206 can be formed by extrusion molding, which will be described in detail below.

[0093] The above-mentioned substrate layer 206 including the first layer 208 and the second layer 210 can have substantially the same thickness as the substrate layer of the existing single-temperature TPU film having only one layer, so the sheet material 200 of the present invention still maintains the characteristics of being light and thin. Furthermore, compared with the substrate layer of the single-temperature TPU film, the substrate layer 206 including the first layer 208 and the second layer 210 has lower requirements for welding operations and can withstand a wider range of welding temperature changes and welding time changes without affecting product quality. Therefore, the substrate layer 206 including the first layer 208 and the second layer 210 can even be made thinner than the substrate layer of the single-temperature TPU film, which will make the inflatable product made of the sheet material 200 lighter.

[0094] The fabric layer 202 of the sheet 200 is made of a fabric material. Optionally, the fabric material may be, but not limited to, a flat fabric material or a three-dimensional fabric material, or only a plurality of fibers or threads. Optionally, the fabric material may be made of one or more fibers (e.g., natural fibers or chemical fibers), in particular, one or more fibers with high tensile strength. Optionally, the one or more fibers are selected from the following materials: cotton fibers, wool fibers, silk fibers, hemp fibers, regenerated fibers, polyester fibers, polyamide fibers, polyacrylonitrile fibers, polyvinyl alcohol fibers, polypropylene fibers, polyurethane fibers, and inorganic fibers.

[0095] Optionally, the adhesive layer 204 of the sheet 200 can be formed by polyurethane adhesive, including but not limited to solvent-based PU adhesive, water-based PU adhesive, PUR hot melt adhesive (also known as moisture-curing reactive polyurethane adhesive, polyurethane reactive hot melt adhesive). Solvent-based PU adhesive has the advantages of high initial adhesion, high degree of bonding in a short time, and high peeling strength between the surface and bottom film. Water-based PU adhesive uses water as a carrier and is more environmentally friendly. PUR hot melt adhesive has many advantages such as solvent-free, water-resistant, heat-resistant, cold-resistant, and creep-resistant. It can be understood that the adhesive layer 204 of the sheet 200 can also be formed by other suitable adhesive materials.

[0096] Optionally, the fabric layer 202 may be coated with a polyurethane coating on the side to be bonded to the adhesive layer 204, so as to enhance the bonding effect between the fabric layer 202 and the adhesive layer 204, and further enhance the bonding strength between the fabric layer 202 and the substrate layer 206. This is particularly advantageous when the fabric material (e.g., a fabric material made of polyamide fiber) of the fabric layer 202 itself is directly bonded to the adhesive material and has a low bonding strength, and can prevent the fabric layer 202 and the substrate layer 206 from being torn apart and separated under the action of external force.

[0097] Optionally, the first polymer material and the second polymer material used to form the substrate layer 206 are thermoplastic polymer materials. Optionally, the first polymer material and the second polymer material can be composed of one or more of the following: thermoplastic polyurethane elastomer (TPU), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC) and polyurethane (PU). The first polymer material and the second polymer material can be the same material or different materials. For example, when the first polymer material and the second polymer material are the same material, the first polymer material and the second polymer material can be one of thermoplastic polyurethane elastomer, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride and polyester. In some embodiments, the first polymer material and the second polymer material can both be thermoplastic polyurethane elastomers. Optionally, the melting point of the first polymer material is at least 15°C higher than the melting point of the second polymer material, so as to more reliably ensure the strength of welding, while avoiding damage and leakage of the sheet 200 during the welding operation. Optionally, the melting point range of the first polymer material is about 140°C to 150°C, and the melting point range of the second polymer material is about 120°C to 130°C; for example, the melting point of the first polymer material is about 150°C, and the melting point of the second polymer material is about 130°C.

[0098] Optionally, the first layer 208 of the substrate layer 206 has a Shore A hardness ranging from 80HA to 98HA, and the second layer 210 has a Shore A hardness ranging from 75HA to 95HA. In this way, the sheet 200 is moderately soft and hard, so as to prevent the sheet 200 from being uncomfortable to the touch due to excessively high hardness and the inflatable product from being easily wrinkled and the breakage rate increasing after being formed, and to prevent the sheet 200 from being too soft due to excessively low hardness and increasing the processing complexity (for example, making it difficult to flatten the sheet or the semi-finished sheet in the sheet manufacturing process).

[0099] Optionally, when the sheet material 200 is used to manufacture an inflatable cushion, the thickness of the substrate layer 206 of the sheet material 200 ranges from 0.01 mm to 0.4 mm, preferably from 0.05 mm to 0.25 mm. Optionally, when the sheet material 200 is used to manufacture other inflatable products or non-inflatable products, the thickness of the substrate layer 206 of the sheet material 200 can range from 0.01 mm to 2 mm.

[0100] Optionally, the ratio of the thickness of the first layer 208 of the substrate layer 206 to the thickness of the second layer 210 is in a range of 1:1 to 1:4. In this way, the thickness ratio of the first layer 208 to the second layer 210 of the substrate layer 206 is moderate. On the one hand, it can avoid that the specific gravity of the first layer 208 is too large (in other words, the specific gravity of the second layer 210 is too small), which leads to a decrease in the welding performance of the sheet 200. For example, for the manufacture of an inflatable cushion using a sheet, it can avoid that the welding strength between the top sheet and the bottom sheet made of the sheet and the welding strength between the top sheet and the bottom sheet and other components in the inflatable chamber are insufficient, which causes damage to the inflatable cushion; on the other hand, it can avoid that the specific gravity of the second layer 210 is too large relative to the first layer 208, which leads to the first layer 208 being melted and damaged by the heat after the second layer 210 is melted when the welding temperature and time are not well controlled during the welding process. For example, for the manufacture of an inflatable cushion using a sheet, it can avoid that the inflatable cushion made of the sheet is damaged and leaked, thereby improving the yield of the inflatable cushion. Preferably, the ratio of the thickness of the first layer 208 of the substrate layer 206 to the thickness of the second layer 210 is about 1:2. Optionally, in some embodiments, the thickness of the first layer 208 of the substrate layer 206 is not less than 0.02 mm, and the thickness of the second layer 210 of the substrate layer 206 is not less than 0.04 mm.

[0101] Return to reference Figures 1 to 11 , several exemplary embodiments of the inflatable cushion according to the present invention will be further introduced below.

[0102] Figures 1 to 3B A first embodiment of an inflatable cushion according to the present invention is shown. Figures 1 to 3B , the illustrated inflatable cushion 100 includes a connecting piece 108 in addition to the top sheet 102 and the bottom sheet 104 described above. The connecting piece 108 is arranged between the top sheet 102 and the bottom sheet 104 in the inflatable chamber 106. Optionally, the connecting piece 108 can be made of thermoplastic polyurethane elastomer (TPU), polyvinyl chloride (PVC), polyurethane (PU) or other suitable polymer materials. The connecting piece 108 includes a plurality of uniformly distributed first welding areas 110 and a plurality of second welding areas 112, wherein the plurality of first welding areas 110 and the plurality of second welding areas 112 are staggered from each other, the plurality of first welding areas 110 are welded to the inner side of the top sheet 102, and the plurality of second welding areas 112 are welded to the inner side of the bottom sheet 104. In other words, the plurality of welding positions of the connecting piece 108 and the top sheet 102 are staggered from the plurality of welding positions of the connecting piece 108 and the bottom sheet 104, which can avoid multiple welding at the same position of the connecting piece 108 and cause insufficient welding strength.

[0103] The inflatable cushion 100 may further include at least one thermal insulation sheet 114 disposed in the inflatable chamber 106. In the illustrated embodiment, the inflatable cushion 100 includes two thermal insulation sheets, namely a first thermal insulation sheet 114a and a second thermal insulation sheet 114b (also collectively referred to herein as thermal insulation sheets 114). The first thermal insulation sheet 114a is disposed between the top sheet 102 and the connecting sheet 108 in the inflatable chamber 106, and the second thermal insulation sheet 114b is disposed between the connecting sheet 108 and the bottom sheet 104 in the inflatable chamber 106. It is understood that in other embodiments, no thermal insulation sheet may be disposed between the top sheet 102 and the connecting sheet 108, or two or more thermal insulation sheets may be disposed, and no thermal insulation sheet may be disposed between the bottom sheet 104 and the connecting sheet 108, or two or more thermal insulation sheets may be disposed.

[0104] The heat-insulating sheet 114 may include a polymer substrate 116 and a metal coating 118 coated on at least one of the front and back sides of the polymer substrate 116. In the illustrated embodiment, the heat-insulating sheet 114 includes a polymer substrate 116 and two metal coatings 118 coated on the front and back sides of the polymer substrate 116. In other embodiments, the heat-insulating sheet may only include a metal coating coated on the front or back side of the polymer substrate. The polymer substrate 116 of the heat-insulating sheet 114 may be formed of a suitable polymer material such as polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), etc., and the metal coating 118 of the heat-insulating sheet 114 may be formed of a suitable metal material such as aluminum, zinc, copper, silver or gold. Further optionally, the polymer substrate 116 of the heat-insulating sheet 114 is formed of polyethylene terephthalate (PET), and the metal coating 118 of the heat-insulating sheet 114 is formed of aluminum.

[0105] In order to facilitate welding between the top sheet 102 and the connecting sheet 108, the first heat-insulating sheet 114a includes a plurality of evenly distributed first openings 120a, each of which is configured to allow a corresponding first welding region 110 of the connecting sheet 108 to contact and be welded to the inner side of the top sheet 102. In order to facilitate welding between the connecting sheet 108 and the bottom sheet 104, the second heat-insulating sheet 114b includes a plurality of evenly distributed second openings 120b, each of which is configured to allow a corresponding second welding region 112 of the connecting sheet 108 to contact and be welded to the inner side of the bottom sheet 104. In this way, the plurality of first welding regions 110 of the connecting sheet 108 can contact and be welded to the top sheet 102 through the plurality of first openings 120a, and the plurality of second welding regions 112 of the connecting sheet 108 can contact and be welded to the bottom sheet 104 through the plurality of second openings 120b.

[0106] Figure 4 A second embodiment of an inflatable cushion according to the present invention is shown. Figure 4 , Figure 4The inflatable cushion 100 in the embodiment includes, in addition to the top sheet 102 and the bottom sheet 104 described above, a plurality of tensioning members 122. The plurality of tensioning members 122 are disposed in the inflation chamber and are spaced apart along the longitudinal direction L1 of the inflatable cushion 100. It is to be understood that, in other embodiments, the plurality of tensioning members may also be spaced apart along the transverse direction perpendicular to the longitudinal direction of the inflatable cushion. In the illustrated embodiment, each tensioning member 122 is sheet-shaped, and the top edge 124 and the bottom edge 126 of each tensioning member 122 are respectively connected to the top sheet 102 and the bottom sheet 104 by, for example, welding, so that the inflatable cushion 100 maintains a predetermined shape when inflated. Optionally, the tensioning member 122 can be made of a suitable polymer material such as polyvinyl chloride (PVC), polyurethane (PU), thermoplastic polyurethane elastomer (TPU), etc. The tensioning member 122 can also be made of polyamide fiber (also known as nylon fiber) or polyethylene terephthalate fiber (PET fiber), or the tensioning member 122 can also be made of the above-mentioned sheet 200 or the substrate layer 206 of the above-mentioned sheet 200.

[0107] Figure 5 A third embodiment of an inflatable cushion according to the present invention is shown. Figure 5 , Figure 5 The inflatable cushion 100 in the embodiment includes a foam core 128 in addition to the top sheet 102 and the bottom sheet 104. The foam core 128 is disposed in the inflation chamber, and the top sheet 102 and the bottom sheet 104 are respectively attached to the top surface 130 and the bottom surface 132 of the foam core 128. Optionally, the top sheet 102 and the bottom sheet 104 can be attached to the top surface 130 and the bottom surface 132 of the foam core 128 by heat pressing or gluing.

[0108] The foam core 128 can be compressed under external force and restore its original shape after the external force is removed. The foam core 128 can be made of a lightweight and elastic open-cell foam material, for example. The shape and volume of the foam core 128 can basically match the shape and volume of the inflatable chamber of the inflatable cushion 100 in the inflated state. The inflatable cushion 100 constructed in this way allows: the inflatable cushion 100 is rolled into a relatively compact roll to exhaust the gas in the inflatable chamber, and the inflatable valve of the inflatable cushion 100 is closed so that the inflatable cushion 100 can be stored in a smaller volume. When in use, the inflatable valve can be opened, and the foam core 128 will apply an expansion force to expand the inflatable cushion 100 while sucking air into the inflatable chamber of the inflatable cushion 100. In other words, by providing the foam core 128, the inflatable cushion 100 can be self-inflated. It is understandable that the inflatable cushion 100 can also be inflated by blowing or using an air bag or an air pump.

[0109] Figure 6 A fourth embodiment of an inflatable cushion according to the present invention is shown. Figure 6 Inflatable cushion and Figure 5The inflatable cushion is similar to the one in the above, the difference is: Figure 6 The foam core 128 of the inflatable cushion 100 includes a plurality of openings 134 extending in the transverse direction T of the foam core 128 and regularly distributed. Figure 6 In the illustrated embodiment, the plurality of openings 134 extend through the foam core 128 along the transverse direction T of the foam core 128 and are evenly spaced apart in the longitudinal direction L2 of the foam core 128. Figure 6 In the illustrated embodiment, the cross section of each opening 134 has a circular shape. It is understood that in other embodiments, the plurality of openings may be blind holes extending in the transverse direction of the foam core; in other embodiments, the plurality of openings may also be through holes or blind holes extending in the longitudinal direction of the foam core; in other embodiments, the cross section of the opening may also have other suitable shapes such as an ellipse.

[0110] Figure 7 A fifth embodiment of an inflatable cushion according to the present invention is shown. Figure 7 Inflatable cushion and Figure 5 The inflatable cushion is similar to the one in the above, the difference is: Figure 7 The foam core 128 of the air cushion 100 includes a plurality of openings 134 extending in the thickness direction S of the foam core 128 and regularly distributed. Figure 7 In the example shown, the plurality of openings 134 penetrate the foam core 128 along the thickness direction S of the foam core 128 and are regularly distributed in the foam core 128 in the form of an array. Figure 7 In the illustrated embodiment, the cross section of each opening 134 has a circular shape. It is understood that in other embodiments, the plurality of openings may be blind holes extending along the thickness direction of the foam core; in other embodiments, the cross section of the opening may also have other suitable shapes such as an ellipse.

[0111] Figure 8 A sixth embodiment of an inflatable cushion according to the present invention is shown. Figure 8 Inflatable cushion and Figure 5 The inflatable cushion is similar to the one in the above, the difference is: Figure 8 The foam core 128 of the inflatable cushion 100 includes a plurality of regularly distributed grooves 136a, 136b, the plurality of grooves including a plurality of first grooves 136a recessed relative to the top surface 130 of the foam core 128 and a plurality of second grooves 136b recessed relative to the bottom surface 132 of the foam core 128. Figure 8In the illustrated embodiment, a plurality of first grooves 136a extend along the transverse direction T of the foam core 128 and are evenly spaced apart in the longitudinal direction L2 of the foam core 128, a plurality of second grooves 136b extend along the transverse direction T of the foam core 128 and are evenly spaced apart in the longitudinal direction L2 of the foam core 128, and each first groove 136a is aligned with a corresponding second groove 136b in the thickness direction S of the foam core 128.

[0112] It can be understood that, in other embodiments, the first groove may not be aligned with the second groove in the thickness direction of the foam core; in other embodiments, the foam core may only be provided with a plurality of grooves recessed relative to its top surface or only be provided with a plurality of grooves recessed relative to its bottom surface; in other embodiments, the plurality of grooves may extend along the longitudinal direction L2 of the foam core.

[0113] By providing multiple openings or multiple grooves, the weight of the inflatable cushion can be reduced while the volume of the inflatable cushion remains roughly unchanged, so that the inflatable cushion is more portable; from another perspective, the thickness of the inflatable cushion can be increased while the weight of the inflatable cushion remains roughly unchanged, so as to provide a more comfortable support for the user. In addition, after the foam core with openings and grooves is made into an inflatable cushion, a pattern will be given to the surface of the inflatable cushion, making the inflatable cushion more beautiful.

[0114] Fig. 9 A seventh embodiment of an inflatable cushion according to the present invention is shown. Fig. 9 Inflatable cushion and Figure 8 The inflatable cushion is similar to the one in the above, the difference is: Fig. 9 The inflatable cushion 100 includes a top sheet 102, a bottom sheet 104 and side surrounding sheets 105. The periphery of the top sheet 102 and the periphery of the bottom sheet 104 are connected by the side surrounding sheets 105, so that the top sheet 102, the bottom sheet 104 and the side surrounding sheets 105 jointly define an inflatable chamber. In the illustrated embodiment, the periphery of the top sheet 102 is welded to the top edge of the side surrounding sheets 105, and the periphery of the bottom sheet 104 is welded to the bottom edge of the side surrounding sheets 105. It is understood that the side surrounding sheets of the seventh embodiment can be arranged in other embodiments of the inflatable cushion in the same manner.

[0115] Fig.10 and Fig.11 An eighth embodiment of an inflatable cushion according to the present invention is shown. Fig.10 and Fig.11 Inflatable cushion and Figure 1 and Figure 2 The main difference between the inflatable mattresses is that Fig.10 and Fig.11No other components are arranged in the inflation chamber defined by the top sheet 102 and the bottom sheet 104 of the inflatable cushion 100, and the top sheet 102 can be directly welded to the bottom sheet 104 at a plurality of regularly distributed welding lines 103a and a plurality of welding points 103b, so that the inflatable cushion 100 maintains a predetermined shape in the inflated state.

[0116] It should be understood that Figures 1 to 11 The illustrated embodiments merely show the shapes, sizes and arrangements of the various optional components of the inflatable cushion according to the present invention, but they are merely illustrative and not restrictive, and other shapes, sizes and arrangements may be adopted without departing from the spirit and scope of the present invention.

[0117] FIG. 13A to FIG. 14B A first embodiment of a sheet material manufacturing apparatus according to the present invention is shown, which can be used to manufacture Fig.12 The sheet 200 is shown in FIG.

[0118] Reference FIG. 13A to FIG. 14B In the illustrated embodiment, the sheet material manufacturing apparatus 300 may include a first part 302 and a second part 304 separated from each other. The first part 302 may include: a first feeding device 306, a second feeding device 308, an extrusion molding device 310, a pressing device 312, a cooling device 314, a trimming device 316, and a first winding device 318. The second part 304 may include: a third feeding device 320, an unwinding device 322, a laminating device 324, and a second winding device 326.

[0119] In the first part 302 of the sheet manufacturing equipment 300, the first feeding device 306 is connected to the extrusion molding device 310, and can supply the first polymer material with fluidity to the extrusion molding device 310; the second feeding device 308 is connected to the extrusion molding device 310, and can supply the second polymer material with fluidity to the extrusion molding device 310; wherein the melting point of the first polymer material is higher than the melting point of the second polymer material. The first feeding device 306 and the second feeding device 308 can have a heating component to heat the solid first polymer material and the second polymer material to a molten state respectively, thereby giving the first polymer material and the second polymer material fluidity. Optionally, the first feeding device 306 and / or the second feeding device 308 can have a screw conveying mechanism, relying on the pressure and shear force generated by the rotation of the screw, so that the material can be fully plasticized and uniformly mixed, and the material can be spirally conveyed along the axis direction of the screw. It is understandable that those skilled in the art can adopt other forms of conveying mechanisms according to actual needs. For example, but not limiting of, the first supply device 306 and / or the second supply device 308 may have a gear pump delivery mechanism.

[0120] Subsequently, the fluid first polymer material and the fluid second polymer material merge in the extrusion molding device 310. The extrusion molding device 310 includes a first flow channel 328, a second flow channel 330, a confluence chamber 332, and a material outlet 334. The first flow channel 328, the second flow channel 330, and the material outlet 334 are each connected to the confluence chamber 332. The first flow channel 328 and the second flow channel 330 are configured to respectively convey the fluid first polymer material and the fluid second polymer material into the confluence chamber 332. The fluid first polymer material and the fluid second polymer material are suitable for confluence in the confluence chamber 332 and extruded from the material outlet 334 to form the first material sheet 400.

[0121] Specifically, the fluid first polymer material from the first feeding device 306 flows into the first flow channel 328 through the inlet of the first flow channel 328 and flows through the first flow channel 328 into the confluence chamber 332, and the fluid second polymer material from the second feeding device 308 flows into the second flow channel 330 through the inlet of the second flow channel 330 and flows through the second flow channel 330 into the confluence chamber 332. Then, the fluid first polymer material and the fluid second polymer material merge in the confluence chamber 332, and the merged materials enter the material outlet 334 from the confluence chamber 332 and are extruded from the material outlet 334 to form a first sheet 400, and the first sheet 400 includes a first layer 402 formed of the first polymer material and a second layer 404 formed of the second polymer material.

[0122] The first polymer material of the fluidity from the first flow channel 328 and the second polymer material of the fluidity from the second flow channel 330 can be partially mixed in the confluence chamber 332, so that the first material sheet 400 includes: a first layer 402 formed by the first polymer material, a second layer 404 formed by the second polymer material, and an intermediate layer 406 formed by a mixture of the first polymer material and the second polymer material. The intermediate layer 406 of the first material sheet 400 is located between the first layer 402 and the second layer 404 and makes the first layer 402 and the second layer 404 more firmly bonded. It should be understood that there may be no obvious interface between the first layer 402 and the intermediate layer 406 of the first material sheet 400, and between the second layer 404 and the intermediate layer 406.

[0123] Reference Fig.14A, the extrusion molding device 310 can be assembled from at least a first component 336, a second component 338, and a third component 340. The first component 336 and the third component 340 can define one or more first flow channels 328 communicating with the confluence chamber 332, for example, the first component 336 and the third component 340 are in close contact, and at least one of the first component 336 and the third component 340 is provided with one or more recesses at the contact position, thereby forming the aforementioned one or more first flow channels 328. Similarly, the second component 338 and the third component 340 can define one or more second flow channels 330 communicating with the confluence chamber 332, for example, the second component 338 and the third component 340 are in close contact, and at least one of the second component 338 and the third component 340 is provided with one or more recesses at the contact position, thereby forming the aforementioned one or more second flow channels 330. The material outlet 334 of the extrusion molding device 310 can be defined by at least the first component 336 and the second component 338 and be in the form of a flat mouth. The size of the material outlet 334 defines the size of the first web 400 extruded from the material outlet 334 .

[0124] Reference Fig.13A and Fig. 13B, the first web 400 delivered from the material outlet 334 is then delivered to the pressing device 312. The pressing device 312 is configured to press the first web 400 delivered from the material outlet 334, wherein the pressing may include flattening and / or embossing, such as only flattening, first flattening and then embossing, or only embossing. In the illustrated embodiment, the pressing device 312 may include a first roller 342 and a second roller 344 adjacent to the material outlet 334, and a third roller 346 located downstream of the first roller 342 and the second roller 344 in the conveying direction of the first web 400. The first web 400 delivered from the material outlet 334 first enters between the first roller 342 and the second roller 344, and then travels to the third roller 346. Optionally, in an embodiment in which the pressing device 312 embosses the first web 400, embossing may be achieved, for example, by setting one of the first roller 342, the second roller 344, and the third roller 346 as an embossing roller. By embossing the first web 400, it is possible to avoid the problem that after the first web 400 that has been processed (for example, cooled and trimmed) is rolled into the first web roll R1 by the first winding device 318, the adjacent first web layers in the first web roll R1 are adhered or adsorbed to each other, resulting in difficulty in subsequently unfolding the first web roll R1. Optionally, the pressing device 312 may also include a heating assembly to heat the first roller 342, the second roller 344, and the third roller 346, thereby avoiding the first web 400 that is still at a high temperature from being delivered from the material outlet 334 from being suddenly cooled after entering the pressing device 312, resulting in defects in the first web 400 and difficulty in being flattened and / or embossed again. Optionally, the first roller 342 and the second roller 344 may be heated to a temperature lower than the temperature of the first web 400 delivered from the material outlet 334, and the third roller 346 may be heated to a temperature lower than the temperature of the first roller 342 and the second roller 344, so that the first web 400 is initially cooled while being pressed.

[0125] The pressed first web 400 can be conveyed into the cooling device 314 for complete cooling. The cooling device 314 can include a plurality of cooling rollers 348 to completely cool and solidify the first web 400 so as to be subsequently bonded to the fabric sheet 500. The cooling device 314 can include a cooling assembly, which can convey a low-temperature cooling medium to the cooling roller 348 to cool the cooling roller 348 and keep it at a relatively low temperature, then recover the heated cooling medium and cool the cooling medium, and then convey the low-temperature cooling medium to the cooling roller 348, and so on. The cooling medium can be a gas or a liquid. The cooling medium can be, for example, a medium such as water or oil.

[0126] The cooled first web 400 may be conveyed into the trimming device 316 for trimming. The trimming device 316 may include a plurality of conveying rollers 350 and a cutting tool 352 to cut the first web 400 into a predetermined width. The cutting tool 352 may be, for example, a cutting knife, a laser cutting head, etc. The width of the first web 400 after trimming may be substantially equal to the width of the fabric sheet 500 to be bonded thereto, so that the second web 600 obtained by bonding the first web 400 after trimming with the fabric sheet 500 may not need to be cut again or only needs a small amount of cutting to obtain a finished sheet. The first winding device 318 may include a first winding roller 354 and a second winding roller 356. The first winding roller 354 is used to roll up the trimmed first web 400 to form a first web roll R1 for use in a subsequent bonding process. The second winding roller 356 is used to roll up the edge material produced by trimming.

[0127] Then, the first web roll R1 is fed into the second part 304 of the sheet manufacturing apparatus 300. The first web roll R1 can be unwound by the unwinding device 322 to provide the trimmed first web 400 to the laminating device 324, while the third feeding device 320 provides the fabric sheet 500 to the laminating device 324. The laminating device 324 is configured to apply an adhesive material on the fabric sheet 500 or the first layer 402 of the first web 400, and to laminate the fabric sheet 500 with the first web 400 through the adhesive material to form the second web 600.

[0128] In the illustrated embodiment, the unwinding device 322 includes an unwinding roller 358. In the illustrated embodiment, the laminating device 324 includes a coating unit 362 and a laminating unit 364. The coating unit 362 may include a coating roller 366 and a coating thickness control assembly 368. The trimmed first web 400 may be transported from the unwinding roller 358 into the coating unit 362, specifically to the bottom of the coating roller 366, so that the first layer 402 of the trimmed first web 400 faces the coating roller 366. The adhesive material may be first applied from above between the coating roller 366 and the coating thickness control assembly 368, and then coated on the trimmed first web 400 via the coating roller 366. The thickness of the adhesive material attached to the coating roller 366 may be adjusted by adjusting the gap size between the coating thickness control assembly 368 and the coating roller 366, thereby controlling the thickness of the adhesive material coated on the trimmed first web 400 by the coating roller 366. Such a coating unit 362 is suitable for coating, for example, PUR hot melt adhesive onto the trimmed first web 400. In the case where the adhesive material is PUR hot melt adhesive, the coating unit 362 may further include a heating component to heat the solid PUR hot melt adhesive to convert it into a molten state, and then coat the molten / fluid PUR hot melt adhesive onto the trimmed first web 400. In the illustrated embodiment, the trimmed first web 400 is conveyed into the coating unit 362 for coating; it is understood that in other embodiments, the fabric sheet 500 may also be conveyed into the coating unit 362 for coating, and then bonded to the trimmed first web 400.

[0129] In the illustrated embodiment, the third material feeding device 320 includes an unwinding roller 360, and the laminating unit 364 includes a plurality of groups of opposing laminating rollers 370. The fabric roll R2 can be unwound by the unwinding roller 360 to convey the fabric sheet 500 between the opposing laminating rollers 370, and the first material sheet 400 coated with an adhesive material can be conveyed between the opposing laminating rollers 370, so that the first material sheet 400 and the fabric sheet 500 are laminated together by the adhesive material, for example, under pressure, to form a second material sheet 600. The second material sheet 600 includes a fabric layer formed by the fabric sheet 500, an adhesive layer formed by the adhesive material, and a substrate layer formed by the first material sheet 400, and the fabric layer is laminated to the substrate layer by the adhesive layer.

[0130] The laminated second web 600 can be directly used as the finished sheet 200 without subsequent processing, and is rolled into a finished sheet roll R3 by the winding roller 372 of the second winding device 326. It can be understood that in other embodiments, the laminated second web 600 can be subjected to subsequent processing such as shaping and cleaning according to actual needs to form the finished sheet 200.

[0131] Optionally, before providing the fabric sheet 500 to the laminating device 324, a polyurethane coating may be applied to the side of the fabric sheet 500 to be laminated with the first material sheet 400, and then the fabric sheet 500 coated with the polyurethane coating may be laminated with the first material sheet 400 through an adhesive material, so as to enhance the bonding effect between the fabric sheet 500 and the adhesive material, thereby enhancing the laminating strength between the fabric sheet 500 and the first material sheet 400. It is understood that this may also be applied to other embodiments of the sheet manufacturing apparatus and sheet manufacturing method of the present invention. Optionally, a polyurethane mixed glue may be formed by mixing a polyurethane liquid and a bridging agent in a ratio of, for example, about 100:2, and the polyurethane mixed glue may be coated on the surface of the fabric sheet 500, and then placed in an oven for drying to form a polyurethane coating on the surface of the fabric sheet 500.

[0132] exist Fig.13A and Fig. 13B In the illustrated embodiment, the first part 302 and the second part 304 of the sheet manufacturing device 300 are separated from each other. In other embodiments, the first part and the second part of the sheet manufacturing device may also be connected to avoid the winding and unwinding of the first material sheet with trimmed edges, so that the production process is simplified. For example, in some variant embodiments, the first part of the sheet manufacturing device may not include a first winding roller for winding the first material sheet with trimmed edges and the second part may not include an unwinding device, and the first material sheet with trimmed edges formed by the first part during the sheet manufacturing process can be directly fed into the laminating device of the second part for gluing and laminating.

[0133] Fig.15 FIG. 2 shows a second part of a second embodiment of a sheet material manufacturing apparatus according to the present invention, wherein the first part of the second embodiment of the sheet material manufacturing apparatus is omitted. FIG. 13A to FIG. 14B The first embodiment of the sheet material manufacturing apparatus in the embodiment has the same first part, and thus the first sheet roll R1 formed by rolling up the trimmed first sheet 400 can also be obtained through the first part of the second embodiment of the sheet material manufacturing apparatus.

[0134] Fig.15 A second embodiment of the sheet material manufacturing apparatus in FIG. 13A to FIG. 14B The first embodiment of the sheet material manufacturing apparatus is different in that: Fig.15 The laminating device 324 of the second portion 304 of the sheet material manufacturing apparatus is configured to apply an adhesive material to the fabric sheet 500 before laminating the fabric sheet 500 to the first material sheet 400 .

[0135] Reference Fig.15, the second part 304 may include: a third feeding device 320, an unwinding device 322, a bonding device 324, and a second winding device 326. The first web roll R1 may be fed into the second part 304 of the sheet manufacturing apparatus 300. The first web roll R1 may be unwound by the unwinding device 322 to provide the trimmed first web 400 to the bonding device 324, while the third feeding device 320 provides the fabric sheet 500 to the bonding device 324. The bonding device 324 is configured to apply an adhesive material on the fabric sheet 500, and bond the fabric sheet 500 to the first web 400 through the adhesive material to form a second web 600.

[0136] In the illustrated embodiment, the third feeding device 320 includes a unwinding roller 360 , the unwinding device 322 includes a unwinding roller 358 , the laminating device 324 includes a coating unit 362 and a laminating unit 364 , and the second winding device 326 includes a winding roller 372 .

[0137] The coating unit 362 may include a scraper 367, an oven 369, and a conveying roller 371, and may be used to apply an adhesive material such as a solvent-based PU adhesive or a water-based PU adhesive to the fabric sheet 500. The working principle of the coating unit 362 is described below using the solvent-based PU adhesive as an example. The fabric sheet 500 may be conveyed from the unwinding roller 360 into the coating unit 362, specifically conveyed to the bottom of the scraper 367. The mixed adhesive of the solvent-based PU adhesive may be first applied to one side of the scraper 367 from above the fabric sheet 500, and then the thickness of the mixed adhesive applied to the fabric sheet 500 by the scraper 367 may be controlled by adjusting the gap between the scraper 367 and the fabric sheet 500, wherein the mixed adhesive of the solvent-based PU adhesive may be formed by mixing a polyurethane liquid and a bridging agent in a certain proportion. Then, the fabric sheet 500 coated with the mixed adhesive of the solvent-based PU adhesive may be transported into the oven 369 for drying to form the fabric sheet 500 coated with the solvent-based PU adhesive, ie, the coated fabric sheet 500 .

[0138] The laminating unit 364 includes a plurality of groups of opposing laminating rollers 370. The first web roll R1 can be unwound by the unwinding roller 358 to convey the trimmed first web 400 between the opposing laminating rollers 370, and the coated fabric sheet 500 can be conveyed between the opposing laminating rollers 370 by the conveying roller 371, so that the first web 400 and the fabric sheet 500 are laminated together by the adhesive material, for example, under pressure, to form the second web 600. The second web 600 includes a fabric layer formed by the fabric sheet 500, an adhesive layer formed by an adhesive material, and a substrate layer formed by the first web 400, and the fabric layer is laminated to the first layer of the substrate layer by the adhesive layer.

[0139] The laminated second web 600 can be directly used as the finished sheet 200 without subsequent processing, and is rolled into a finished sheet roll R3 by the winding roller 372 of the second winding device 326. It can be understood that in other embodiments, the laminated second web 600 can be subjected to subsequent processing such as shaping and cleaning according to actual needs to form the finished sheet 200.

[0140] Fig.16 A third embodiment of the sheet material manufacturing apparatus according to the present invention is shown. The sheet material manufacturing apparatus can be used to manufacture Fig.12 The sheet 200 shown in FIG. 1 , and the sheet manufacturing apparatus eliminates the need for winding and unwinding the first web.

[0141] Fig.16 The sheet material manufacturing equipment 300 shown mainly includes: a first feeding device 306 , a second feeding device 308 , an extrusion molding device 310 , a pressing device 312 , a cooling device 314 , a third feeding device 320 , a laminating device 324 , a trimming device 316 and a winding device 318 . Fig.16 The first feeding device 306, the second feeding device 308, the extrusion molding device 310, the pressing device 312, the cooling device 314, the third feeding device 320, the laminating device 324, the trimming device 316 and the winding device 318 of the sheet manufacturing apparatus 300 can be respectively connected to Fig.13A and Fig. 13B The first feeding device, the second feeding device, the extrusion molding device, the pressing device, the cooling device, the third feeding device, the laminating device, the trimming device and the first winding device of the sheet material manufacturing apparatus shown have the same configuration. Fig.16 The sheet material manufacturing apparatus 300 shown is Fig.13A and Fig. 13B The differences between the sheet manufacturing equipment shown are that Fig.16 The sheet manufacturing equipment 300 shown is configured to: directly convey the first material sheet 400 cooled by the cooling device 314 to the bonding device 324 to be coated with an adhesive material and bonded with the fabric sheet 500 through the adhesive material to form a second material sheet 600; use the trimming device 316 to trim the second material sheet 600 formed by bonding; and use the winding device 318 to wind up the trimmed second material sheet 600 and wind up the edge material produced by the trimming.

[0142] Fig.17 A fourth embodiment of the sheet material manufacturing apparatus according to the present invention is shown. Fig.17 Sheet manufacturing equipment and Fig.16 Similar to the sheet manufacturing equipment in Fig.17The sheet material manufacturing equipment mainly includes: a first feeding device 306, a second feeding device 308, an extrusion molding device 310, a pressing device 312, a cooling device 314, a third feeding device 320, a laminating device 324, a trimming device 316 and a winding device 318. Fig.17 Sheet manufacturing equipment and Fig.16 The difference between sheet manufacturing equipment in the industry is: Fig.17 The laminating device 324 of the sheet material manufacturing apparatus 300 is configured to apply an adhesive material on the fabric sheet 500 before laminating the fabric sheet 500 to the first material sheet 400 . Fig.17 The laminating device 324 of the sheet manufacturing equipment 300 and Fig.15 The laminating device in has the same configuration and can be used to apply an adhesive material such as solvent-based PU adhesive or water-based PU adhesive to the fabric sheet 500, and then laminate the coated fabric sheet 500 and the first material sheet 400 together to form a second material sheet 600.

[0143] Fig.18 A fifth embodiment of the sheet material manufacturing apparatus according to the present invention is shown. Fig.18 Sheet manufacturing equipment and Fig.17 Similar to the sheet manufacturing equipment in Fig.18 The sheet manufacturing equipment mainly includes: a first feeding device 306, a second feeding device 308, an extrusion molding device 310, a third feeding device 320, a laminating device 324, a pressing device 312, a cooling device 314, a trimming device 316 and a winding device 318.

[0144] Fig.18 Sheet manufacturing equipment and Fig.17 The main differences in sheet manufacturing equipment are: Fig.18 The sheet material manufacturing apparatus 300 is configured to directly feed the first material sheet 400 formed by the extrusion molding device 310 into the bonding device 324, so as to be bonded with the fabric sheet 500 by the adhesive material in the bonding device 324 to form the second material sheet 600. The differences between the two will be mainly described below.

[0145] Reference Fig.18The third feeding device 320 provides the fabric sheet 500 to the coating unit 362 of the laminating device 324, and the coating unit 362 coats the fabric sheet 500 with an adhesive material (e.g., solvent-based PU adhesive or water-based PU adhesive) and dries the fabric sheet 500 coated with the adhesive material to form a coated fabric sheet 500. Then, the coated fabric sheet 500 is conveyed between the opposing laminating rollers 370 of the laminating unit 364 of the laminating device 324, and at the same time, the first web 400 conveyed through the material outlet of the extrusion molding device 310 is also directly conveyed between the opposing laminating rollers 370 of the laminating unit 364, so that the coated fabric sheet 500 and the first layer of the first web 400 are laminated together, for example, under pressure to form a second web 600. Since the first web 400 delivered from the material outlet of the extrusion molding device 310 is usually at a high temperature and is not completely solidified, directly delivering such a first web 400 to the laminating unit 364 for laminating is conducive to the close combination of the first web 400 and the adhesive material, thereby improving the laminating strength between the first web 400 and the fabric sheet 500. The second web 600 delivered from the laminating unit 364 of the laminating device 324 can subsequently be flattened and / or embossed, cooled, trimmed, and rolled up by the pressing device 312, the cooling device 314, the trimming device 316, and the winding device 318, respectively.

[0146] Understandably, despite Fig.18 In the illustrated embodiment, laminating and flattening and / or embossing are performed by laminating device 324 and pressing device 312, respectively. In other embodiments, the laminating unit of the laminating device may also integrate the functions of flattening and / or embossing, so that laminating and flattening and / or embossing can be completed simultaneously in one device (for example, the same roller group).

[0147] Understandably, FIG. 13A to FIG. 18 It is only a schematic diagram of an exemplary embodiment of the sheet manufacturing equipment according to the present invention, which is only illustrative and not restrictive. It can be understood that the specific configuration of each device of the sheet manufacturing equipment and the arrangement order of each device can be adjusted according to actual needs, and some devices can be added or deleted. For example, the number and arrangement of rollers included in each device of the sheet manufacturing equipment shown in the accompanying drawings are only for illustration, and each device of the sheet manufacturing equipment may include other suitable numbers of rollers, or the rollers may be arranged in other ways. For another example, in some embodiments, the pressing device and the cooling device can be integrated into one device to press and completely cool the first sheet. For another example, the sheet manufacturing equipment may also include an additional cleaning device to clean and remove dust from the produced sheet.

[0148] Corresponding to the exemplary embodiment of the sheet material manufacturing apparatus according to the present invention, the present invention also provides a sheet material manufacturing method.

[0149] Fig.19 An exemplary embodiment of a sheet material manufacturing method according to the present invention is shown. Fig.19 The sheet manufacturing method 700 includes: providing a first polymer material with fluidity, a second polymer material with fluidity, an adhesive material and a fabric sheet, wherein the melting point of the first polymer material is higher than that of the second polymer material; the first polymer material with fluidity and the second polymer material with fluidity are combined to form a first sheet, wherein the first sheet includes a first layer and a second layer, wherein the first layer includes the first polymer material and the second layer includes the second polymer material; and bonding the fabric sheet to the first layer of the first sheet by an adhesive material to form a second sheet, wherein the second sheet includes a fabric layer formed by the fabric sheet, an adhesive layer formed by the adhesive material and a substrate layer formed by the first sheet.

[0150] In some embodiments, the first sheet obtained by the sheet manufacturing method includes an intermediate layer between the first layer and the second layer, and the intermediate layer includes a mixture of the first polymer material and the second polymer material. In some embodiments, the first polymer material and the second polymer material used in the sheet manufacturing method are both thermoplastic polyurethane elastomers.

[0151] Based on e.g. FIG. 13A to FIG. 17 In some embodiments of the sheet manufacturing method of the sheet manufacturing apparatus shown, the sheet manufacturing method further includes applying an adhesive material to the first layer of the fabric sheet or the first material sheet before laminating the fabric sheet to the first material sheet. FIG. 13A to FIG. 17 In some embodiments of the sheet manufacturing method of the sheet manufacturing apparatus shown, the sheet manufacturing method further comprises pressing the first web after forming the first web, and the pressing may include flattening and / or embossing. FIG. 13A to FIG. 17 In some embodiments of the sheet manufacturing method of the illustrated sheet manufacturing apparatus, the sheet manufacturing method further comprises cooling the pressed first web.

[0152] Based on e.g. FIG. 13A to FIG. 15 In some embodiments of the sheet manufacturing method of the sheet manufacturing apparatus shown, the sheet manufacturing method includes trimming the cooled first web, and bonding the fabric sheet to the trimmed first web by means of an adhesive material to form a second web; optionally, the sheet manufacturing method also includes rolling the trimmed first web into a first web roll, and unwinding the first web roll to provide the trimmed first web for bonding to the fabric sheet. Fig.16 and Fig.17 In some other embodiments of the sheet manufacturing method of the illustrated sheet manufacturing apparatus, the sheet manufacturing method includes trimming the second material sheet after bonding the fabric sheet to the first material sheet via an adhesive material to form the second material sheet.

[0153] Based on e.g. Fig.18 In some embodiments of the sheet manufacturing method of the sheet manufacturing apparatus shown, the sheet manufacturing method includes coating an adhesive material on a fabric sheet and attaching the coated fabric sheet to a first material sheet to form a second material sheet. Fig.18 In some embodiments of the sheet manufacturing method of the sheet manufacturing apparatus shown, the sheet manufacturing method further comprises pressing the second web while laminating the coated fabric sheet with the first web to form the second web or after forming the second web, wherein the pressing comprises flattening and / or embossing. Fig.18 In some embodiments of the sheet manufacturing method of the sheet manufacturing apparatus shown, the sheet manufacturing method further comprises cooling the pressed second material sheet. Fig.18 In some embodiments of the sheet manufacturing method of the illustrated sheet manufacturing apparatus, the sheet manufacturing method further comprises trimming the cooled second web.

[0154] It should also be understood that those skilled in the art can easily make modifications, variations and equivalents of these embodiments based on the disclosed content. For example, a feature shown or described as part of an embodiment can be used together with another embodiment to produce yet another embodiment. The present disclosure is intended to cover these modifications, variations and equivalents. The technical content and technical features of the present invention have been disclosed above, but it can be understood that under the creative ideas of the present invention, those skilled in the art can make various changes and improvements to the above disclosed concepts, but they all belong to the protection scope of the present invention. The description of the above embodiments is exemplary rather than restrictive, and the protection scope of the present invention is determined by the claims.

Claims

1. A sheet material, characterized in that: The sheet material comprises: Fabric layer; an adhesive layer; and A substrate layer, the substrate layer comprises a first layer and a second layer, the first layer comprises a first polymer material, the second layer comprises a second polymer material, the melting point of the first polymer material is higher than the melting point of the second polymer material, The substrate layer is formed by the confluence of the first polymer material with fluidity and the second polymer material with fluidity, and the fabric layer is bonded to the first layer via the adhesive layer.

2. The sheet material according to claim 1, characterized in that The substrate layer includes an intermediate layer between the first layer and the second layer, and the intermediate layer includes a mixture of a first polymer material and a second polymer material.

3. The sheet material according to claim 1, characterized in that Each of the first polymer material and the second polymer material is composed of one or more of thermoplastic polyurethane elastomer, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride or polyurethane.

4. The sheet material according to claim 3, characterized in that The first polymer material and the second polymer material are both thermoplastic polyurethane elastomers.

5. The sheet material according to claim 1, characterized in that The melting point of the first polymer material is at least 15° C. higher than the melting point of the second polymer material.

6. The sheet material according to claim 1, characterized in that The adhesive layer is formed of polyurethane adhesive.

7. The sheet material according to claim 6, characterized in that The polyurethane adhesive is a solvent-based PU adhesive, a water-based PU adhesive or a PUR hot melt adhesive.

8. The sheet material according to claim 1, characterized in that The fabric layer comprises a polyurethane coating on a side facing the adhesive layer.

9. The sheet material according to any one of claims 1 to 8, characterized in that The first layer has a Shore A hardness ranging from 80 HA to 98 HA, and the second layer has a Shore A hardness ranging from 75 HA to 95 HA.

10. The sheet material according to any one of claims 1 to 8, characterized in that The ratio of the thickness of the first layer to the thickness of the second layer ranges from 1:1 to 1:

4.

11. The sheet material according to any one of claims 1 to 8, characterized in that The thickness of the substrate layer ranges from 0.01 mm to 0.40 mm.

12. An inflatable product, characterized in that: At least a portion of the inflatable product is made from the sheet material according to any one of claims 1 to 11.

13. The inflatable product according to claim 12, characterized in that The inflatable product is an inflatable cushion, which comprises a top sheet and a bottom sheet, wherein the top sheet and the bottom sheet are connected to each other and jointly define an inflatable chamber, wherein the top sheet and the bottom sheet are made of the sheet material.

14. The inflatable product according to claim 13, characterized in that The inflatable cushion also includes a connecting sheet, which is arranged between the top sheet and the bottom sheet in the inflatable chamber and includes a plurality of first welding areas and a plurality of second welding areas, wherein the plurality of first welding areas and the plurality of second welding areas are staggered with each other, the plurality of first welding areas are welded to the top sheet, and the plurality of second welding areas are welded to the bottom sheet.

15. The inflatable product according to claim 14, characterized in that The inflatable cushion also includes at least one heat insulation sheet, which is arranged in the inflatable chamber, and each heat insulation sheet includes a polymer substrate and a metal coating plated on at least one of the front and back surfaces of the polymer substrate.

16. The inflatable product of claim 13, wherein: The inflatable cushion further includes a plurality of tension members, and a top edge and a bottom edge of each tension member are welded to the top sheet and the bottom sheet, respectively.

17. The inflatable product according to claim 16, characterized in that The tension member is made of the sheet material, or is made of the base material layer of the sheet material.

18. The inflatable product of claim 13, wherein: The inflatable cushion further comprises a foam core, and the top sheet and the bottom sheet are respectively attached to the top surface and the bottom surface of the foam core.

19. The inflatable product according to claim 18, characterized in that The foam core includes a plurality of regularly distributed open cells or a plurality of regularly distributed grooves.

20. An inflatable product according to any one of claims 13 to 19, characterised in that The inflatable cushion also includes side panels, the periphery of the top panel is connected to the top edge of the side panels, and the periphery of the bottom panel is connected to the bottom edge of the side panels, so that the top panel, the bottom panel and the side panels jointly define the inflatable chamber.

21. A sheet material manufacturing device, characterized in that: The sheet material manufacturing equipment comprises: A first feeding device and a second feeding device, wherein the first feeding device and the second feeding device are configured to respectively supply a first polymer material with fluidity and a second polymer material with fluidity, wherein the melting point of the first polymer material is higher than the melting point of the second polymer material; An extrusion molding device, the extrusion molding device comprises a first flow channel, a second flow channel, a confluence chamber and a material outlet, the first flow channel, the second flow channel and the material outlet are respectively connected to the confluence chamber, the first flow channel and the second flow channel are configured to respectively guide a first polymer material with fluidity from the first feeding device and a second polymer material with fluidity from the second feeding device into the confluence chamber, the first polymer material with fluidity and the second polymer material with fluidity are suitable for confluence in the confluence chamber and extruded from the material outlet to form a first material sheet, the first material sheet comprises a first layer and a second layer, the first layer comprises the first polymer material, and the second layer comprises the second polymer material; a third feeding device configured to supply a fabric sheet; and A bonding device is configured to bond the fabric sheet to the first layer of the first material sheet via an adhesive material to form a second material sheet, wherein the second material sheet includes a fabric layer formed by the fabric sheet, an adhesive layer formed by the adhesive material, and a substrate layer formed by the first material sheet.

22. The sheet material manufacturing apparatus according to claim 21, characterized in that The laminating device is configured to apply the adhesive material on the first layer of the fabric sheet or the first material sheet before laminating the fabric sheet with the first material sheet.

23. The sheet material manufacturing apparatus according to claim 21 or 22, characterized in that: The sheet material manufacturing apparatus further comprises a pressing device, wherein the pressing device is configured to press the first web conveyed from the material outlet, wherein the pressing comprises flattening and / or embossing.

24. The sheet material manufacturing apparatus according to claim 23, characterized in that The sheet material manufacturing apparatus further includes a cooling device configured to cool the pressed first web.

25. The sheet material manufacturing apparatus according to claim 24, characterized in that The sheet material manufacturing equipment further includes a trimming device; the sheet material manufacturing equipment is configured to convey the cooled first web to the trimming device for trimming and convey the trimmed first web to the bonding device.

26. The sheet material manufacturing apparatus according to claim 25, characterized in that The sheet material manufacturing equipment also includes a winding device and an unwinding device, wherein the winding device is configured to wind the trimmed first sheet into a first sheet roll, and the unwinding device is configured to unwind the first sheet roll and convey the trimmed first sheet to the bonding device.

27. The sheet material manufacturing apparatus according to claim 24, characterized in that The sheet material manufacturing equipment further includes a trimming device, the sheet material manufacturing equipment is configured to convey the cooled first web to the bonding device to form the second web, and the trimming device is configured to trim the second web.

28. The sheet material manufacturing apparatus according to claim 21, characterized in that The sheet material manufacturing apparatus is configured to deliver the first material sheet from the material outlet to the bonding device, and the bonding device is configured to apply the adhesive material on the fabric sheet before bonding the fabric sheet to the first material sheet.

29. The sheet material manufacturing apparatus according to claim 28, characterized in that The sheet material manufacturing equipment further comprises a pressing device, wherein the pressing device is configured to press the second web conveyed from the laminating device, wherein the pressing comprises flattening and / or embossing.

30. The sheet material manufacturing apparatus according to claim 28, characterized in that The laminating device is further configured to press the second web while laminating the coated fabric sheet with the first web to form the second web, wherein the pressing includes flattening and / or embossing.

31. The sheet material manufacturing apparatus according to claim 29 or 30, characterized in that: The sheet material manufacturing apparatus further includes a cooling device configured to cool the pressed second web.

32. The sheet material manufacturing apparatus according to claim 31, characterized in that The sheet material manufacturing apparatus further includes a trimming device configured to trim the cooled second web.

33. A method for manufacturing a sheet material, characterized in that: The sheet material manufacturing method comprises: Providing a fluid first polymer material, a fluid second polymer material, an adhesive material and a fabric sheet, wherein the melting point of the first polymer material is higher than the melting point of the second polymer material; The first polymer material having fluidity and the second polymer material having fluidity are combined to form a first sheet, wherein the first sheet comprises a first layer and a second layer, wherein the first layer comprises the first polymer material and the second layer comprises the second polymer material; and The fabric sheet is bonded to the first layer of the first material sheet through the adhesive material to form a second material sheet, wherein the second material sheet includes a fabric layer formed by the fabric sheet, an adhesive layer formed by the adhesive material, and a substrate layer formed by the first material sheet.

34. The sheet material manufacturing method according to claim 33, characterized in that: The first material sheet includes an intermediate layer between the first layer and the second layer, and the intermediate layer includes a mixture of a first polymer material and a second polymer material.

35. The sheet material manufacturing method according to claim 33, characterized in that: The first polymer material and the second polymer material are both thermoplastic polyurethane elastomers.

36. The sheet material manufacturing method according to any one of claims 33 to 35, characterized in that: The sheet material manufacturing method further includes applying the adhesive material on the first layer of the fabric sheet or the first material sheet before attaching the fabric sheet to the first material sheet.

37. The sheet material manufacturing method according to claim 36, characterized in that: The sheet material manufacturing method further comprises pressing the first web after forming the first web, wherein the pressing comprises flattening and / or embossing.

38. The sheet material manufacturing method according to claim 37, characterized in that: The sheet material manufacturing method also includes cooling the pressed first web.

39. The sheet material manufacturing method according to claim 38, characterized in that: The sheet material manufacturing method further includes trimming the cooled first web, and bonding the fabric sheet to the trimmed first web via the adhesive material to form a second web.

40. The sheet material manufacturing method according to claim 39, characterized in that: The sheet material manufacturing method further includes rolling up the trimmed first web into a first web roll, and unwinding the first web roll to provide the trimmed first web for bonding with the fabric sheet.

41. The sheet material manufacturing method according to claim 38, characterized in that: The sheet material manufacturing method further includes trimming the second material sheet after bonding the fabric sheet to the first material sheet via the adhesive material to form the second material sheet.

42. The sheet material manufacturing method according to any one of claims 33 to 35, characterized in that: The sheet material manufacturing method includes coating the adhesive material on the fabric sheet and attaching the coated fabric sheet to the first web to form the second web.

43. The sheet material manufacturing method according to claim 42, characterized in that: The sheet manufacturing method further includes pressing the second web while laminating the coated fabric sheet with the first web to form the second web or after forming the second web, wherein the pressing includes flattening and / or embossing.

44. The sheet material manufacturing method according to claim 43, characterized in that: The sheet material manufacturing method further includes cooling the pressed second web.

45. The sheet material manufacturing method according to claim 44, characterized in that The sheet material manufacturing method further includes trimming the cooled second web.

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