Cylindrical health appliance and method for manufacturing the same

Abstract

To provide a cylindrical health appliance which is not only excellent in lightness and durability but also capable of relieving adhesion and tension of human fascia, muscles, etc. when a prescribed treatment is performed. [Solution] A cylindrical health device includes, from the inside to the outside, at least a cylindrical member and a massage part. The massage part is made of foamed resin, and has a plate-shaped reinforcing member with an opening at least in the center along the length of the cylindrical member. The cylindrical member is a thin-walled cylindrical object with an internal space of a predetermined volume, maintaining light weight and allowing the interior of the cylindrical member to be used for various purposes. In addition, the reinforcing member is usually shaped like a plate so that it can be easily accommodated inside the cylindrical member of the cylindrical health device.

Description

[Technical Field]

[0001] The present invention relates to a cylindrical health device (hereinafter sometimes referred to as a foam roller) that is lightweight yet has excellent mechanical strength and durability, and can effectively relieve adhesions in the human fascia, as well as a method for manufacturing such a cylindrical health device. [Background technology]

[0002] BACKGROUND ART Various manual massage devices have been proposed to relieve tension and adhesion in muscles, tendons, and surrounding tissues such as fascia in the human body, and to alleviate pain and fatigue. However, various manual massage devices often rely mainly on pressure on the affected area, and are not effective enough in areas that are hard to reach, such as the back, or areas where it is difficult to apply weight or pressure. Furthermore, there was also the problem that the massage intensity was not appropriate, which could lead to further muscle damage depending on the condition of the subject's muscles.

[0003] Therefore, a massage roller has been proposed that is effective in eliminating discord between muscles and their connective tissues, even in hard-to-reach areas such as the back, and can also be used for core training, etc. (see, for example, Patent Document 1). More specifically, as shown in FIG. 10, the massage roller 100 is made up of an internal roller core 112 and an elastic body 113 provided around the core and constituting a surface layer. The elastic body 113 is characterized by being made up of a plurality of massage zones 113a, 113b, 113c with different densities. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 9,005,146 (claims, Figure 1, etc.) Summary of the Invention [Problem to be solved by the invention]

[0005] However, the massage roller 100 disclosed in Patent Document 1 required the formation of an elastic body 113 having multiple massage zones 113a, 113b, 113c with different densities around the roller core 112. This resulted in a problem in that the roller core 112 had to be relatively thick and heavy in order to increase its mechanical strength and durability. Furthermore, since it is necessary to form multiple massage zones 113a, 113b, 113c with different densities, not only is considerable manufacturing control required, but stable manufacturing is difficult, and there are also problems such as an increase in manufacturing time and manufacturing costs. Furthermore, since the roller core 112 is not sufficiently adhered to the elastic body 113 having multiple massage zones 113a, 113b, 113c with different densities, there is a problem that the elastic body 113 is easily peeled off from the roller core 112 during treatment, causing it to become displaced.

[0006] Therefore, after extensive research, the inventors discovered that by making a cylindrical health device with reinforcing members of a predetermined shape at predetermined locations, it is possible to withstand a considerable weight even if it is made lighter without having to provide multiple massage zones with different densities on the surface, and therefore it can be manufactured stably and can effectively exert the predetermined treatment effects, thereby completing the present invention. In other words, the present invention aims to provide a cylindrical health device that is not only lightweight and durable, but also easy to manufacture and that can easily relieve adhesions and tension in fascia, muscles, etc. through a specified treatment, as well as an efficient method for manufacturing the same. [Means for solving the problem]

[0007] According to the present invention, there is provided a cylindrical health device that includes, from the inside to the outside, at least a cylindrical member, an adhesive layer, and a treatment portion, wherein the treatment portion is made of foamed resin and is provided with a reinforcing member at least in the center along the length of the cylindrical member, thereby solving the above-mentioned problems. In other words, by providing reinforcing members at specified locations on the cylindrical member, the cylindrical health device can withstand a considerable weight while maintaining its lightness, and ultimately, when used for specified treatments, the treatment area made of foamed resin on the surface can effectively restore adhesions and tension in the human fascia, muscles, etc.

[0008] In constructing the cylindrical health appliance of the present invention, it is preferable that the reinforcing member is plate-shaped and has an opening. By providing at least one opening in the plate-shaped reinforcing member in this way, the opening ratio can be adjusted appropriately, and the reinforcing member can be made lighter and thinner while maintaining its strength. Therefore, even when a plate-shaped reinforcing member having an opening is provided, it can significantly contribute to improving the mechanical strength of the cylindrical health appliance while substantially maintaining the lightweight property of the appliance.

[0009] In constructing the cylindrical health appliance of the present invention, it is preferable that the reinforcing member is fixed to a fixing portion provided on the cylindrical member. That is, by providing grooves, protrusions, or predetermined walls as fixing portions on the cylindrical member, the formation position of the reinforcing member can be easily determined and the reinforcing member can be firmly attached.

[0010] In constructing the cylindrical health appliance of the present invention, it is preferable to provide an embossed pattern on the surface of the cylindrical member. In this way, by providing an embossed pattern at a predetermined location on the cylindrical member, even if the cylindrical health device is made lighter and thinner, it can withstand a considerable weight, and furthermore, it can effectively exhibit a predetermined springiness (elasticity).

[0011] Furthermore, when constructing the cylindrical health device of the present invention, it is preferable to have a non-formed portion (sometimes referred to as a flat portion) along the length of the cylindrical member at a predetermined distance from the end of the cylindrical member, where no embossed pattern is provided. In this way, by providing a non-formed portion at the end of the cylindrical member that does not have such an embossed pattern, it is possible to selectively increase the mechanical strength, etc., at the end of the cylindrical member, which is easily subjected to load and is therefore easily damaged.

[0012] Furthermore, when constructing the cylindrical health device of the present invention, it is preferable that the foamed resin of the treatment portion contains foamed resin containing at least a first colorant, foamed resin containing a second colorant having a hue different from that of the first colorant, and foamed resin containing a third colorant having a hue different from that of the first colorant and the second colorant. By configuring it in this way, when used for a specific treatment, the treatment area has a camouflage pattern made of multiple foamed resins or the like on the surface, making it a cylindrical health tool that is highly eye-catching and has improved design, and can increase the customer-drawing effect at stores.

[0013] Furthermore, when constructing the cylindrical health appliance of the present invention, when the reinforcing member provided at least in the central portion is defined as the first reinforcing member, it is preferable to provide a second reinforcing member at both ends or one end of the cylindrical member. By configuring it in this way, the durability of the end portion, which is easily weakened by the load during treatment due to the structure of the cylindrical member, can be improved, and damage due to the load can be prevented. Furthermore, the inside of the cylindrical member can be used through the opening, and a strap or the like that can be used to carry the cylindrical health tool can be used through the opening. Furthermore, by appropriately changing the size of the opening, etc., the opening ratio (the ratio of the area of ​​the opening to the total area being 100%) can be adjusted to the desired range, making it possible to more accurately balance weight reduction and improved mechanical strength.

[0014] Another aspect of the present invention is a method for producing any of the cylindrical health implements described above, which method comprises the following steps (A) to (D): (A) A step of preparing at least a first cylindrical member having a reinforcing member already provided therein or a second cylindrical member to which the reinforcing member is later fixed, an adhesive layer, and a foamed sheet-like material for treatment area derived from a plurality of foaming resins. (B) A step of wrapping the foamed sheet-like material for treatment around the cylindrical member via an adhesive layer to form a cylindrical health device. (C) A step of placing the cylindrical health device inside a mold, and then heating and pressurizing it to compress and mold a sheet-like material for the treatment area. (D) When a second cylindrical member is used, a step of attaching a reinforcing member to the second cylindrical member. In this way, by performing the predetermined steps (A) to (D), it is possible to efficiently manufacture a cylindrical health tool that can withstand a considerable weight even if the overall weight is reduced. Therefore, by using the device in a prescribed treatment, adhesions and tensions in the fascia and muscles of a person can be effectively relieved, and a cylindrical health device can be efficiently manufactured. [Brief explanation of the drawings]

[0015] [Figure 1] 1(a) to 1(c) are a front view, a cross-sectional view (in the longitudinal direction), and a cross-sectional view (in the direction perpendicular to the longitudinal direction) provided for explaining a cylindrical health appliance provided with a reinforcing member according to the present invention. [Figure 2] 2(a) and 2(b) are diagrams provided for explaining a perspective view and a cross-sectional view (lengthwise direction) of a cylindrical health appliance provided with a second reinforcing member according to the present invention. [Figure 3] 3(a) to 3(c) are diagrams provided for explaining the reinforcing plate of the cylindrical member in the present invention. [Figure 4] 4(a) to 4(c) are diagrams provided to explain the inclination angle of the sidewalls of the embossed pattern of the present invention. [Figure 5] 5(a) to 5(c) are diagrams provided to explain an example of a method for manufacturing a cylindrical member and a reinforcing member. [Figure 6] Figure 6(a) is a diagram (photograph) showing the state in which the center is pressed when obtaining a stress curve for a cylindrical health device, and Figure 6(b) is a diagram (photograph) showing the state in which the end is pressed when obtaining a stress curve for a cylindrical health device. [Figure 7] Figure 7(a) is a diagram showing the stress-strain curve when the central portion of a cylindrical health device corresponding to Example 1 of the present invention is pressed, and Figure 7(b) is a diagram showing the stress-strain curve when the central portion of a cylindrical health device corresponding to Comparative Example 1 of the present invention is pressed. [Figure 8] Figure 8(a) is a diagram showing the stress-strain curve when an end of a cylindrical health device corresponding to Example 1 of the present invention is pressed, and Figure 8(b) is a diagram showing the stress-strain curve when an end of a cylindrical health device corresponding to Comparative Example 1 of the present invention is pressed. [Figure 9] 9(a) to 9(d) are side views illustrating a method for manufacturing a cylindrical health appliance according to the present invention. [Figure 10] FIG. 10 is a diagram provided for explaining a conventional massage roller. DETAILED DESCRIPTION OF THE INVENTION

[0016] [First embodiment] The first embodiment is a cylindrical health device 10 that includes, from the inside (the center of the cylindrical health device) to the outside in a radial direction, at least a cylindrical member 12, an adhesive layer 11, and a treatment section 13, as illustrated in Figures 1(a) to (c), and the treatment section 13 is made of a foamed resin 14, and the cylindrical health device 10 is provided with a reinforcing member 16 at least in the center along the length of the cylindrical member 12. That is, the AA cross section of FIG. 1(a) corresponds to the embodiment of FIG. 1(c), and the A'-A' cross section of FIG. 1(a) corresponds to the embodiment of FIG. 1(b). The cylindrical health appliance 10 of the first embodiment will be specifically described below with reference to the drawings as needed.

[0017] 1. Cylindrical parts As shown in Figures 1(a) to (c), the cylindrical health device 10 of the first embodiment includes at least a cylindrical member 12 and a predetermined massage portion 13, and is characterized by having a multi-layer structure in which the cylindrical member 12 serves as a base and at least the massage portion 13, which has excellent cushioning properties, is layered radially from the inside to the outside of the cylindrical member 12. In other words, by using such a multi-layer structure, durability against load can be improved, and when used as a cylindrical health device, damage to the outer shape can be prevented even if a predetermined load (e.g., 40 MPa or more) is applied during treatment. The cylindrical member is a thin-walled cylindrical object with an internal space of a predetermined volume, and is lightweight while allowing the interior of the cylindrical member to be used for various purposes, such as a simple storage space for shoes or PET bottles, or a through-hole for passing through a strap for carrying, etc.

[0018] (1) Components The components of the cylindrical member 12 shown in Figure 1 etc. are not particularly limited as long as they are capable of adequately supporting the weight of a single user (e.g., a body weight of 200 kg or more) as the cylindrical health device 10 and have suitable mechanical strength. Therefore, it is preferable to use a constituent resin because it is relatively lightweight and relatively inexpensive, and it is preferable to construct it from a resin composition whose main component is any one of ABS resin (acrylonitrile-butadiene-styrene copolymer resin), polycarbonate resin, and polyester resin. By using these resins, cylindrical health devices including cylindrical members can maintain their light weight and, even when the wall thickness is thin, such as 5 mm or less, can withstand an allowable load of at least 40 MPa, which is sufficient to withstand the load during treatment.

[0019] Of the resins constituting the cylindrical member described above, it is more preferable to use ABS resin as the main component. The reason for this is that ABS resin has considerable rubber elasticity while maintaining its fluidity as a resin, so it is relatively lightweight, while at the same time having excellent mechanical properties such as rigidity and impact resistance, and is also easy to process into thin walls and emboss. Furthermore, ABS resin can be colored while retaining its gloss by controlling the temperature during injection molding without painting, and also has relatively good adhesion to the cushion layer. Furthermore, ABS resin has excellent shock absorption and durability because it bends appropriately when a load is applied.

[0020] Of the above-mentioned resin materials, it is also preferable to use polycarbonate resin as the main component. This is because polycarbonate resin is a resin that exhibits excellent physical properties such as impact resistance and dimensional stability, and can further improve the durability of the cylindrical health device against loads.

[0021] (2) Length The axial length of the cylindrical member 12 shown in Figures 3(b) to (c) and the like is not particularly limited, but if it is too short, the area that can come into contact with the human body will be small, and the treatment effect may not be obtained efficiently. Conversely, if it is too long, it will be difficult to handle, and transportation or treatment in a narrow space may become difficult. In other words, by adjusting the axial length of the cylindrical member 12 to a value within a suitable range, it becomes easier to obtain treatment effects efficiently, and the handling becomes good, making it possible to perform treatment without requiring an excessively large space. Therefore, more specifically, the axial length of the cylindrical member is preferably set to a value within the range of 15 to 60 cm, more preferably within the range of 20 to 50 cm, and even more preferably within the range of 25 to 40 cm.

[0022] (3) Inner diameter FIG. 3(c) is a cross-sectional view of the cylindrical member 12 shown in FIG. 3(b) along line AA. The inner diameter (φ2) is not particularly limited, but if it is made too small, the outer diameter (φ1) of the cylindrical member 12 or the thickness of the treatment area 13 may become too large in order to effectively obtain the treatment effect, and the overall weight may become excessively heavy. Conversely, if the inner diameter of the cylindrical member is made too large, it may become difficult to handle, making it difficult to transport, or it may be impossible to perform treatment depending on the physique of the user. Therefore, the inner diameter of the cylindrical member is preferably set to a value within the range of 5 to 18 cm, more preferably within the range of 6 to 16 cm, and even more preferably within the range of 8 to 15 cm.

[0023] (4) Embossed pattern It is preferable that an embossed pattern 12a is formed on the surface of the cylindrical member 12, as shown in FIG. 3(b). The reason for this is that by providing an embossed pattern at a predetermined location on the cylindrical member, the load-bearing capacity is improved and the cylindrical health device can withstand a considerable external weight even if the device is made lighter overall. Here, the surface of the cylindrical member means the outer surface and / or the inner surface of the cylindrical member, and preferably includes at least the outer surface of the cylindrical member. The reason for this is that by providing an embossed pattern on the outer surface of the cylindrical member, it becomes easier to remove the mold after molding the cylindrical member without damaging the embossed pattern, which in turn increases the strength of the cylindrical member. The embossed pattern is not particularly limited, but is preferably at least one of dots (usually circles, ellipses, irregular dots), lines, waves, curves, polygons (e.g., triangles to dodecagons), mountains, honeycomb shapes (regular hexagons), etc. In particular, as shown in FIG. 3(b), if the embossed pattern 12a is in a honeycomb shape (regular hexagon), it can be patterned and molded with high precision. In addition, even if the cylindrical member is thin-walled, it can withstand a load greater than a predetermined level and exhibit high strength, making it a suitable embossed pattern. When the embossed pattern is a honeycomb shape or the like, it is usually preferable that one side has a value within the range of 3 to 8 mm and the center distance between adjacent honeycomb shapes or the like has a value within the range of 6 to 16 mm.

[0024] There are also no particular restrictions on the size (planar area) of the embossed pattern, but it is generally preferable that the center-to-center distance between adjacent embossed patterns (or the distance between adjacent embossed patterns) be within the range of 5 to 20 mm. The reason for this is that if the center-to-center distance of such embossed patterns is less than 5 mm or exceeds 20 mm, it may become difficult to mold with precision, or it may become difficult to reduce the weight of the cylindrical member while maintaining its mechanical strength. Therefore, it is more preferable that the center distance of the embossed pattern is set to a value within the range of 8 to 18 mm, and even more preferable that it is set to a value within the range of 10 to 15 mm.

[0025] Furthermore, there is no particular limitation on the depth of the embossing, but it is usually preferable to set it to a value within the range of 0.1 to 5 mm. The reason for this is that if the depth of the embossing is less than 0.1 mm or exceeds 5 mm, it may become difficult to form with precision, or it may become difficult to reduce the weight of the cylindrical member while maintaining its mechanical strength. Therefore, it is more preferable that the depth of the embossment is set to a value within the range of 0.3 to 3 mm, and even more preferable that it is set to a value within the range of 0.5 to 2 mm.

[0026] However, as shown in Figure 3(b), it is preferable that along the length of the cylindrical member 12, at a predetermined distance 12b from the end of the cylindrical member, there is an unformed portion (sometimes called a flat portion) where no embossed pattern is provided. The reason for this is that by providing non-embossed portions at predetermined locations, it is possible to increase the mechanical strength of the end portions of the cylindrical member, which are prone to receiving loads. Conversely, even if an embossed pattern is provided on the surface of a cylindrical member, if the embossed pattern is provided all the way to the end, the mechanical strength of the end may decrease, making it more susceptible to breakage. Therefore, it is preferable to provide such an embossed pattern on the surface of the cylindrical member, excluding both end portions. More specifically, it is preferable to place the embossed pattern at a location 3 cm or more away from the edge, more preferably at a location 4 cm or more away from the edge, and even more preferably at a location 5 cm or more away from the edge.

[0027] As shown in FIG. 4(a), it is preferable that the angle of the side wall of the embossed pattern 12a along the depth direction is perpendicular to the radial direction of the cylindrical member. The reason for this is that by making the side walls perpendicular to the cylindrical member in this way, the strength can be further increased.

[0028] On the other hand, as shown in FIG. 4(b), it is also preferable that the angle of the side wall of the embossed pattern 12a along the depth direction is inclined at a predetermined inclination angle θ with respect to the axis along the radial direction of the cylindrical member. The reason for this is that by having such an inclined side wall, when the mold that forms the embossing on the cylindrical member is removed, it is possible to more effectively prevent the unevenness on the mold side from interfering with the unevenness formed on the cylindrical member, causing the embossing to collapse. Therefore, although the inclination angle of the side wall is not particularly limited, it is generally preferable that the inclination angle be 5 to 60 degrees relative to the axis along the radial direction of the cylindrical member, more preferably 10 to 50 degrees, and even more preferably 15 to 45 degrees.

[0029] As shown in FIG. 4(c), it is preferable that the side walls of the embossed pattern 12a have at least two different inclination angles along the circumferential direction. The reason for this is that by providing a plurality of inclination angles in this way, it is possible to form an embossed pattern with greater precision in accordance with the shape of the mold, etc. Therefore, it is preferable that the difference between the largest inclination angle and the smallest inclination angle (including non-inclined embossed patterns) be 60° or less, more preferably 45° or less, and even more preferably 30° or less.

[0030] Specifically, it is preferable to determine the inclination angle of the sidewall of the embossed pattern based on the shape of the mold for forming the embossed pattern. For example, as shown in Figure 5(a), in a configuration in which four equally divided arc-shaped outer molds 33 to 36 for forming the embossed pattern are arranged along the circumferential direction and move radially, it is preferable that the inclination angle θ of the side walls of the embossed pattern at the center of the arc-shaped molds be 0° and the inclination angle of the side walls of the embossed pattern at the ends be within the range of 5 to 60°. The reason for this is that by changing the inclination angle of the side wall in this way, an embossed pattern can be created in accordance with the direction in which the mold is removed, preventing the molded irregularities from collapsing while more efficiently maintaining the strength of the cylindrical member. In this case, it is preferable that the inclination angle of the embossed pattern increases continuously from the center of the arc-shaped mold toward the end, but from the viewpoint of facilitating the manufacture of the mold, it is also preferable that the inclination angle increase in stages.

[0031] (5) Outer diameter The outer diameter (φ1) of the cylindrical member 12 shown in FIG. 3(c) is not particularly limited, but it is preferable that the outer diameter (φ1) corresponds to the inner diameter (φ2) and thickness of the cylindrical member 12, and that the weight and strength of the cylindrical member 12 are kept within a suitable range. Therefore, the difference between the outer diameter (φ1) and the inner diameter (φ2) of the cylindrical member 12, i.e., twice the wall thickness, is preferably a value within the range of 0.5 to 12 mm, more preferably a value within the range of 0.8 to 10 mm, and even more preferably a value within the range of 1 to 8 mm. Furthermore, the inner diameter of the cylindrical member does not need to be uniform, and it is preferable that the inner diameter at the midpoint in the axial direction of the cylindrical member is larger than the inner diameter at the ends. The reason for this is that by making the inner diameter at the midpoint in the axial direction of the cylindrical member larger than the inner diameter at the end, the overall load-bearing capacity can be increased even when a load is applied to the midpoint. Therefore, more specifically, it is preferable that the inner diameter at the midpoint in the axial direction of the cylindrical member is 1.01 times or more larger than the inner diameter at the end, more preferably a value within the range of 1.02 to 1.3, and even more preferably a value within the range of 1.05 to 1.2.

[0032] On the other hand, when die forming by a drawing method or the like is used, it is preferable that the inner diameter at the end portion is larger than the inner diameter at the midpoint in the axial direction of the cylindrical member. The reason for this is that if the inner diameter of the cylindrical member is made uniform, it may be difficult to remove the cylindrical member from the mold during molding. In other words, by configuring it in this way, the cylindrical member can be easily removed from the mold, and the time required to manufacture the cylindrical health device can be shortened. Therefore, when using a mold forming method such as drawing, it is preferable that the inner diameter at the end of the cylindrical member is 1.01 times or more the inner diameter at the midpoint in the axial direction of the cylindrical member, more preferably a value in the range of 1.02 to 1.3, and even more preferably a value in the range of 1.05 to 1.2.

[0033] 2.Adhesive layer As shown in FIG. 1( a ), the cylindrical health device of the first embodiment preferably has an adhesive layer 11 between a cylindrical member 12 and a treatment part 13 . In this way, by providing the adhesive layer 11, the cylindrical member 12 and the treatment part 13 can be suitably fixed together, preventing misalignment or peeling between the cylindrical member 12 and the treatment part 13 during treatment, and further improving the structural stability and durability of the cylindrical health device.

[0034] Here, the constituent components of the adhesive layer 11 shown in Figure 1(b) etc. are not particularly limited as long as they have good adhesive properties for fixing the cylindrical member 12 and the treatment area 13 together. Therefore, it is preferable to use one of acrylic resin, silicone resin, urethane resin, thermoplastic elastomer, etc. as the main component, since these have excellent adhesive properties and are relatively inexpensive. In particular, an adhesive layer whose main component is acrylic resin is a suitable adhesive because it fills the gap between the cylindrical member 12 and the treatment area 13, exhibits strong adhesive properties, and is therefore less likely to peel off even when the treatment area 13 is formed by foaming, etc.

[0035] The thickness of the adhesive layer is preferably set to a value within the range of 10 to 3000 μm when configured as a double-sided adhesive tape. This is because, by making the thickness of the adhesive layer 11 10 μm or more, suitable adhesiveness can be maintained, and the cylindrical member 12 and the treatment area 13 can be more firmly fixed together. Furthermore, by making the thickness of the adhesive layer 11 3000 μm or less, it becomes possible to mold the adhesive layer 11 so that it is covered with the treatment area 13 all the way to the edge, as shown in Figures 9(c) to (d), etc., and this is because it is possible to prevent poor appearance due to leakage of adhesive, etc. Therefore, the thickness of the pressure-sensitive adhesive layer is more preferably set to a value within the range of 20 to 1000 μm, and even more preferably set to a value within the range of 30 to 500 μm. It is also preferable that the adhesive layer 11 has a multilayer structure, since this facilitates handling and further improves mechanical properties. That is, it is also preferable that the adhesive layer 11 has a double-sided adhesive tape structure in which adhesive layers are provided on the front and back surfaces of an intermediate layer made of a PET film or the like.

[0036] 3. Treatment area As shown in Figures 1(b) to (c), the cylindrical health device 10 of the first embodiment is characterized in that it is formed by laminating a treatment part 13 made of foamed resin on the side of a cylindrical member 12 as a base via an adhesive layer 11. By constructing the cylindrical health device in this manner, it has a cylindrical member on the inside, which makes it durable against loads, and it also has a treatment part that has cushioning properties, durability, etc., so it can demonstrate excellent treatment effectiveness.

[0037] (1) Foamed resin layer The treatment section 13 shown in Figs. 1(a) to (c) etc. is characterized by including a foamed resin layer. This is because the cylindrical health tool including the foamed resin layer can exhibit a predetermined cushioning property while having strength suitable for treatment. Therefore, it is preferable that the foamed resin layer be made of at least one of foamed urethane resin, foamed EVA resin, and foamed styrene resin, as these are relatively inexpensive, lightweight, and highly durable.

[0038] Furthermore, by making the above-mentioned foamed resin layer a foamed resin layer with a camouflage pattern derived from multiple foamed resins, the cylindrical health equipment can be made to attract more customers in stores and have a crime prevention effect. This is because the foamed resin layer has a camouflage pattern derived from multiple foamed resins, improving the design and eye-catching quality of the cylindrical health equipment, and the improved eye-catching quality makes the cylindrical health equipment more noticeable when it is being carried, etc.

[0039] The plurality of foamed resins preferably include at least a foamed resin containing a first colorant, a foamed resin containing a second colorant having a different hue from the first colorant, and a foamed resin containing a third colorant having a different hue from the first colorant and the second colorant. This is because such a configuration allows the cylindrical health appliance to have improved design and eye-catching features. Furthermore, by using a foamed resin containing a colorant, it is possible to prevent discoloration and peeling that occur when the surface is colored by painting or printing.

[0040] (2)Surface shape The treatment section 13 shown in Figures 1(a) to (c), etc., preferably has a plurality of pyramidal irregularities 13a (sometimes referred to as protrusions) on the surface of the foamed resin layer, or strip-shaped irregularities 13b of a different shape along the rotatable direction, so that it can be used for various treatments. This is because, during treatment, pressure and rotation can be applied to provide more optimal stimulation, eliminating adhesions and tension in the fascia and muscles, and restoring them to a normal state. The shape of the multiple projections and recesses is not particularly limited, but it is preferable that multiple different projections and recesses have different shapes, such as pyramidal or dome-shaped projections, depending on the position on the surface of the treatment area.

[0041] (3) Thickness The thickness of the treatment area 13 shown in Figures 1(a) to (c) etc. is not particularly limited, but if it is too thin, it may not be able to exhibit adequate cushioning properties and may not be able to achieve a good treatment effect. Furthermore, if the treatment area is too thick, it may become heavy and difficult to handle. Therefore, it is preferable that the thickness of the treatment area be set to a value within the range of 0.8 to 3 cm, more preferably within the range of 0.9 to 2.5 cm, and even more preferably within the range of 1 to 1.8 cm.

[0042] (4) Density The density of the treatment area 13 shown in Figures 1(a) to (c) etc. is not particularly limited, but it is preferable that it can exhibit suitable cushioning properties and be adjusted appropriately depending on the user's constitution and the treatment. Furthermore, if the treatment area has different densities in different areas, the cushioning properties will vary from area to area, resulting in differences in the feel of use and making it possible to use the product differently depending on the treatment. However, if the thickness of the treatment area is kept within a specified range so as not to become excessively heavy, it is difficult to create a difference in the feel of use in different areas to the extent that it can be used differently depending on the treatment. Furthermore, when molding treatment areas to have different densities for different areas, the time and cost required for molding increases. Therefore, it is preferable that the density of the treatment area does not have a large difference overall, or rather is substantially equal and uniform. More specifically, the density of the treatment area is kept constant, and the density is measured according to the JIS K 7312 standard, and is 20 to 80 g / cm 3 It is preferable to set the value within the range of 30 to 70 g / cm 3 It is more preferable to set the value within the range.

[0043] 4.Connection part Furthermore, although not shown, it is preferable that the cylindrical health device be divisible into multiple pieces along the axial direction, at least a first cylindrical health device and a second cylindrical health device, and that a connecting portion be provided between the first cylindrical health device and the second cylindrical health device. This is because the axial length of the cylindrical fitness tool can be changed appropriately depending on the user's body type and the method of use. Here, the configuration of the connecting part is not particularly limited, but it is preferable that the first cylindrical health device and the second cylindrical health device have a fitting structure or a screw structure in which each cylindrical member serves as a socket, and that the relative positions of the first cylindrical health device and the second cylindrical health device can be fixed with a strength sufficient to withstand treatment. It is also preferable to laminate a predetermined reinforcing member corresponding to such a connecting portion, to combine them by providing a fitting portion, or to form both of them integrally from resin using a mold or the like.

[0044] 5. Reinforcement member 1 As shown in FIGS. 1(b) to 1(c), the cylindrical health appliance 10 preferably includes a reinforcing member 16 at least in the center along the length of the cylindrical member 12. As shown in FIGS. This is because, due to the structure of the cylindrical member, it is easily deformed by being pressed from the outside during treatment, particularly around the center. Therefore, by providing a specified reinforcing member near the central portion which is prone to bending, durability is significantly improved, even when pressure is applied from the outside during treatment, etc., and damage to the cylindrical member as a whole can be prevented. Furthermore, even if a predetermined reinforcing member is provided near the central portion which is prone to bending, the flexibility and softness of the treatment portion will not fundamentally change, and the massage can still contribute to an effective fascia massage for the practitioner. Furthermore, since the overall mechanical strength of the cylindrical member is increased, it is possible to contribute to making the cylindrical member thinner and lighter. Here, the central portion is preferably a position that is 1 / 2 of the axial length from one end of the cylindrical member, but it is acceptable to consider it to be the central portion as long as it is located within a range of 1 / 3 to 2 / 3 of the axial length from one end of the cylindrical member.

[0045] (1) Shape The shape of the reinforcing member is not particularly limited, but it is usually preferable that the reinforcing member be a plate-shaped reinforcing member 16, as shown in FIG. 3(a) etc., so that it can be easily housed inside the cylindrical member of a cylindrical health appliance. The reason for this is that the reinforcing member flexes appropriately to absorb the load on the area that is most susceptible to deformation (the center along the length) during treatment, significantly increasing the mechanical strength and durability of the cylindrical health device. Therefore, in the case of a plate-shaped reinforcing member, the thickness is usually preferably set to a value within the range of 0.5 to 10 mm, more preferably a value within the range of 1 to 8 mm, and even more preferably a value within the range of 2 to 5 mm. Furthermore, the shape of the reinforcing member is preferably circular or elliptical in plan view, as this allows it to withstand external loads from any direction and also allows it to fit easily inside the cylindrical member and be easily fixed.

[0046] (2) Opening As shown in FIG. 3(a) and other figures, the reinforcing member 16 preferably has one or more openings 16a. The reason for this is that the opening (sometimes called a through hole) makes the reinforcing member lighter and thinner, and also allows the opening to be gripped and fixed, etc., thereby improving handleability. Furthermore, such openings allow the entire inside of the cylindrical member to be widely used, and do not act as air passages to hinder ventilation. Furthermore, a strap or the like that can be used to transport the cylindrical health equipment can be securely used through the opening.

[0047] Furthermore, by appropriately changing the size of the openings in the reinforcing member, the opening ratio (the ratio of the area of ​​the openings to the total area being 100%) can be adjusted to the desired range, making it possible to more accurately balance weight reduction and improved mechanical strength. More specifically, the opening ratio of the reinforcing member is preferably set to a value within the range of 10 to 90%, more preferably to a value within the range of 30 to 80%, and even more preferably to a value within the range of 40 to 60%.

[0048] The shape of the opening is not particularly limited, but is preferably a circle, an ellipse, a diamond, or another polygon (for example, a triangular to dodecagonal shape) when the reinforcing member is viewed from above. The reason for this is that such a shape contributes to reducing the overall weight without excessively reducing the strength of the reinforcing member. Therefore, a circular, elliptical or octagonal shape is particularly preferable since stress concentration during deformation is unlikely to occur.

[0049] Furthermore, it is preferable that the openings are arranged in the reinforcing member at positions that are line-symmetric with respect to an imaginary center line in the radial direction of the cylindrical member, or at positions that are point-symmetric with respect to an imaginary center point in the radial direction of the cylindrical member. The reason for this is that even if the cylindrical member rolls and the direction in which the load is applied changes, deformation of the cylindrical member can be prevented more stably.

[0050] (3) Quantity The number of reinforcing members is not particularly limited as long as they have a strength that can improve the mechanical properties and durability of the interior of the cylindrical member. Therefore, it is usually preferable to provide 1 to 4 reinforcing members, more preferably 1 to 3 reinforcing members, and even more preferably 1 to 2 reinforcing members. When multiple reinforcing members are provided, it is preferable to arrange them evenly along the length of the interior of the cylindrical member, but it is also preferable to arrange them selectively so that there are more of them than at the ends, in order to particularly strengthen the area near the center. In addition, by appropriately changing the number and size of the reinforcing members, the above-mentioned opening ratio can be adjusted to a desired range, and a balance between weight reduction and improved mechanical strength can be achieved with greater precision.

[0051] (4) Constituent materials The material for the reinforcing member is not particularly limited as long as it has a strength that can improve the mechanical properties and durability of the interior of the cylindrical member. Therefore, it is preferable to use general-purpose plastics because they are lightweight and inexpensive. More specifically, it is preferable to use relatively inexpensive resins such as ABS resin, polycarbonate resin, and polyester resin as the main component, which have good processability, high mechanical strength, and durability.

[0052] (5) Fixing member As shown in FIGS. 1(b) to 1(c), etc., it is preferable to provide a fixing member (not shown) that fixes the reinforcing member 16 to a predetermined location (such as the center) of the cylindrical member 12. The reason for this is that the position at which the reinforcing member is formed is precisely determined, and the opening allows for widespread use of the entire inside of the cylindrical member 12, allowing straps or the like that can be used to carry cylindrical health equipment to be passed through and used. Here, the form of the fixing member is not particularly limited, and it is preferable that the fixing member is one or more protrusions, one or more grooves (recesses), or a wall member provided at a predetermined position on the cylindrical member. The reason for this is that such protrusions, grooves, or wall members can be precisely positioned at predetermined locations (such as the center) of the cylindrical member, and by abutting or fitting the reinforcing member to them, the reinforcing member can be firmly fixed in an accurate position at the predetermined location (such as the center) of the cylindrical member. Moreover, if such a fixing member is used, the position of the fixing member can be changed as needed, and thus the formation position of the reinforcing member can also be easily changed.

[0053] It is also preferable that the reinforcing member is provided integrally as a part of the cylindrical member. The reason for this is that by providing the reinforcing member integrally in this manner, it is no longer necessary to fix the reinforcing member to the cylindrical member afterwards, making manufacturing easier. In addition, by providing them as an integral part, it is possible to prevent rattling from occurring between the cylindrical member and the reinforcing member due to gaps or slight unevenness, and ultimately to more effectively prevent a decrease in strength.

[0054] Furthermore, the method for integrally molding the reinforcing member is not particularly limited, but it is preferable to use, for example, an outer mold 33 for molding the outside of the cylindrical member and an inner mold 31 for molding the inside of the cylindrical member, as shown in Figures 5(b) to (c). That is, as shown in Figures 5(b) to (c), the inner mold used to mold the reinforcing member preferably comprises a first inner mold 31a having a recessed portion at its end along the axial direction of the cylinder, the recessed portion having a shape corresponding to the opening, and a second inner mold 31b having a protruding portion at its end having a shape corresponding to the opening.

[0055] Next, the recessed portion of the first inner mold and the protruding portion of the second inner mold are fitted together, and it is preferable to position the respective ends with a predetermined gap therebetween. It is preferable to place an outer mold around the inner mold and pour the molten resin material between them. The reason for this is that by doing this, the cylindrical member can be molded using the resin material that flows between the inner mold and the outer mold, and the reinforcing member can be integrally molded using the resin material that flows between the first inner mold and the second inner mold.

[0056] (6) Mechanical strength When a reinforcing member is inserted, it is preferable that the constituent material be one that can obtain a predetermined stress-strain curve (commonly known as an SS curve) measured in accordance with JIS K 6767:1999 so that the mechanical strength of the central part of the cylindrical member 12 can be suitably improved and confirmed. That is, the cylindrical health appliance (corresponding to Example 1) has an embossed honeycomb pattern on its surface, and further has a predetermined reinforcing member provided thereon. Therefore, when the cylindrical health tool (corresponding to Example 1) is pressed at the center using a pressure measurement device as shown in FIG. 6(a), for example, as shown in FIG. 7(a), the pressure measured per unit area (1 cm 2 ) can exhibit high stresses of up to 50 MPa. On the other hand, the cylindrical health appliance (corresponding to Comparative Example 1) does not have a predetermined reinforcing member. Therefore, when the center of the cylindrical health appliance is pressed using a pressure measurement device, for example, as shown in FIG. 7(b), the pressure per unit area (1 cm 2 ) the stress was about 40 MPa. Therefore, by providing a predetermined reinforcing member in the central portion of the cylindrical health appliance, the mechanical strength of at least the central portion of the cylindrical health appliance can be significantly increased. Furthermore, by providing an embossed pattern such as a honeycomb pattern on the surface of the cylindrical member, the mechanical strength of the end portion of the cylindrical health device can be further increased compared to when no embossed pattern is provided.

[0057] Furthermore, the cylindrical health appliance (corresponding to Example 1) does not have a honeycomb shape from the end toward the inside for about 50 mm at its end, but has a predetermined reinforcing member. Therefore, when the cylindrical health tool (corresponding to Example 1) is pressed at its end using a pressure measurement device as shown in FIG. 6(b), for example, as shown in FIG. 8(a), the pressure measured per unit area (1 cm 2 ) can exhibit high stresses of up to 40 MPa. On the other hand, the cylindrical health tool (corresponding to Comparative Example 1) does not have a predetermined reinforcing member. Therefore, when the end of the cylindrical health tool is pressed using a pressure measurement device, for example, as shown in FIG. 8(b), the pressure measured per unit area (1 cm 2 ) the maximum pressure was about 34 MPa, less than 35 MPa. Therefore, by providing a predetermined reinforcing member in the center of the cylindrical health appliance, the mechanical strength of the end portions can also be significantly increased. Furthermore, even if an embossed pattern is not provided on the end of the cylindrical member, the mechanical strength of the end of the cylindrical health device can be further increased by providing an embossed pattern, for example, in the center of the cylindrical member.

[0058] 6. Reinforcement member 2 As illustrated in FIG. 2, when the cylindrical health device 10 has a first reinforcing member at least at the center along the length, it is preferable to further provide a second reinforcing member 18 having a plurality of openings at both ends or one end of the cylindrical member 12. This is because, due to the structure of the cylindrical member, durability against loads during treatment becomes relatively lower toward the axial end, and by providing a second reinforcing member, durability at the end is significantly improved, effectively preventing breakage during use.

[0059] The shape of such a second reinforcing member is not particularly limited, but if it is shaped to cover the end of the cylindrical member, it will not be suitable for use in applications such as using the inside of the cylindrical member as a location for attaching a carrying strap, and so the reinforcing member will need to be removed each time. Therefore, it is preferable that the second reinforcing member has a shape that has a plurality of openings and generally has a cross shape when viewed from one side. This makes it possible to use the inside of the cylindrical member through the multiple openings, and even when using straps or the like that can be used to carry cylindrical health equipment, they can be used without removing the reinforcing member.

[0060] Furthermore, the material of the second reinforcing member is not particularly limited as long as it has a strength that can suitably improve the durability of the end portion of the cylindrical member. Therefore, it is preferable to use general-purpose plastics because they are lightweight and inexpensive, and more specifically, it is preferable to use ABS resin, polycarbonate resin, polyester resin, or the like as the main component.

[0061] 7.How to use The method of using the cylindrical health appliance shown in FIG. 1 etc. is not particularly limited, but preferably includes at least two steps, for example, a preparation step and a treatment step.

[0062] (1) Preparation process The preparation step is a step of preparing a space for efficient use of the cylindrical health appliance shown in FIG. 1 and the like. During treatment, it is preferable to place the cylindrical health device on the floor or a pedestal, and since the user may need to lie down, it is preferable to prepare a space large enough to suit the user's physique.

[0063] (2) Treatment process The treatment step is a step in which a user performs treatment on a treatment target area using the cylindrical health tool shown in FIG. 1 etc. More specifically, the user places the area to be treated against the treatment part 13 of a cylindrical health device placed on the floor or a pedestal, and rotates the cylindrical health device while applying pressure using its own weight, thereby relieving adhesions and tension in the fascia and muscles, etc., and restoring them to a normal state. In the treatment process, the cylindrical health tool shown in FIG. 1 and the like is not particularly limited to a particular area to be treated, and can be used on various areas such as the abdomen, back, thighs, arms, shins, and calves. Furthermore, the cylindrical health device shown in FIG. 1 etc. has a plurality of projections and recesses, so that it is possible to give a variety of stimuli to the treatment target area, not just simple pressure.

[0064] [Second embodiment] The second embodiment, as shown in FIGS. 9(a) to 9(d), is a method for manufacturing a cylindrical health appliance 10, characterized by including the following steps (A) to (C). (A) A step of preparing a cylindrical member 12 (hereinafter, sometimes referred to as a first cylindrical member) that is already equipped with at least a reinforcing member 16, or a cylindrical member 12 (hereinafter, sometimes referred to as a second cylindrical member) to which the reinforcing member 16 is later fixed, an adhesive layer 11, and a foamed treatment portion sheet-like material 13c derived from a plurality of foaming resins. (B) A step of wrapping the foamed treatment sheet material 13c around the cylindrical member 12 via the adhesive layer 11 to form the cylindrical health device 10. (C) A step of placing the cylindrical health device 10 inside a mold, and then applying heat and pressure to compress and mold the sheet-like material 13c for treatment area. (D) Step of attaching the reinforcing member 16 when using the second cylindrical member The second embodiment will be specifically described below with reference to FIGS. 9(a) to 9(d). 9(a) to 9(d) are diagrams provided to explain the manufacturing method of the cylindrical health appliance.

[0065] 1. Preparation process (A) As part of the preparation process (A), as shown in Figure 9(a), the cylindrical health device is made up of a cylindrical member 12, an adhesive layer 11, and a camouflage-patterned sheet-like material 13c for the treatment area made from multiple foamed resins. That is, first, a cylindrical member made of ABS resin or the like is prepared as a constituent material. Here, the cylindrical member is preferably a first cylindrical member that is provided with at least a reinforcing member in advance. The reason for this is that by arranging them integrally in this manner, it is possible to prevent rattling from occurring between the cylindrical member and the reinforcing member due to gaps or slight unevenness, and thus more effectively prevent a decrease in strength. On the other hand, from the viewpoint of simplifying the manufacturing apparatus, it is also preferable that the cylindrical member is a second cylindrical member to which the reinforcing member is later fixed.

[0066] As part of the preparation step (A), a double-sided adhesive tape or the like is prepared as the adhesive layer 11, as shown in FIG. 9(b). 9(c), a sheet-like material 13c for the treatment area made from a plurality of foaming resins is prepared. That is, a sheet-like material is prepared by foaming predetermined foaming resins into a sheet shape. Here, it is preferable that the sheet-like material be formed into a camouflage-patterned sheet-like material by partially crosslinking a resin containing colorants of a plurality of different hues while the colors remain separated into a camouflage pattern. The reason for this is that by forming it in this manner, even if it contains multiple resins with different hues, it is possible to prevent the colors from mixing together, making it possible to form a camouflage pattern, and also to prevent color fading due to surface friction, etc.

[0067] 2. Pasting process (B) Next, in the attachment process (B), as shown in Figure 9(c), an adhesive layer 11 is formed around the cylindrical member 12, and then a foamed (including some unfoamed) sheet-like material 13c is attached to form a cylindrical health device. Since the sheet-like material is attached by wrapping it around the cylindrical member, it is preferable that the length and width of the sheet-like material correspond to the length and outer diameter of the cylindrical member. Here, it is known that the foamed sheet-like material does not need to be completely foamed, and there is no problem even if some unfoamed material remains. For example, if at least 10% of the foaming agent has reacted, the sheet-like material can be wrapped around a cylindrical member to form the treatment area without causing molding defects or the like. Therefore, it is more preferable to react 30% or more of the foaming agent, and even more preferable to react 50% or more of the foaming agent, before winding the sheet-like material around the cylindrical member.

[0068] 3. Forming process (C) The forming process (C) is a process in which the cylindrical health device is placed inside a mold (not shown) as shown in FIG. 9(d), and then heated and pressurized to form the sheet-like material 13c into the shape of the desired treatment area. More specifically, a cylindrical health device containing the cylindrical member 12 as an insert part is placed inside a mold having a shape with multiple protrusions and recesses, and then the sheet-like material 13c is heated and pressurized to form the treatment area 13 as shown in Figure 9(d). That is, in this process, by combining insert molding and compression molding, the cylindrical member 12, the adhesive layer 11, and the treatment part 13 derived from the sheet-like material 13c can be firmly bonded together. In addition, in this process, the sheet-like material 13c can cover the end of the cylindrical member 12 at the end of the cylindrical health appliance, which in turn can prevent the adhesive layer 11 from leaking to the outside. Therefore, the adhesive cannot be seen from the outside, and the cylindrical health appliance can be prevented from having poor appearance. Here, when a portion of the sheet-like material is in an unfoamed state, it is preferable to completely foam the sheet-like material when molding the sheet-like material.

[0069] 4. Reinforcement member installation process (D) Although not specifically shown, the attachment process (D) is a process of attaching a reinforcing member (first reinforcing member) along the length of the cylindrical member, usually at the center, equidistant from both ends, when the reinforcing member is to be post-fixed. That is, a plate-shaped reinforcing member having a predetermined opening can be firmly attached via a fixing member such as a groove provided in the cylindrical member. It is also preferable that the fixing member contains an adhesive or a filler in part, which further strengthens the fixation and adhesion between the reinforcing member and the fixing member. Furthermore, as shown in Figs. 2(a) and 2(b), it is also preferable to attach a second reinforcing member 18 to both ends or one end of the obtained cylindrical health device. [Example]

[0070] The present invention will be described in further detail below with reference to examples. However, the present invention is not limited to the description of the following examples without any particular reason.

[0071] [Example 1] 1. Manufacturing of cylindrical health equipment (1) Forming the cylindrical member The cylindrical member was formed by injection molding using a resin material whose main component was ABS resin. That is, the cylindrical member had an axial length of 33.0 cm, an inner diameter of 13.0 cm, and an outer diameter of 13.5 cm. In addition, when the cylindrical member was formed by injection molding, a specified embossed pattern (honeycomb shape (regular hexagon) with a side length of 5 mm, distance between adjacent centers: 12 mm, depth: 2.5 mm) was created on the surface of the cylindrical member (excluding areas within 5 cm from the end). Furthermore, as part of the cylindrical member, a 4 mm thick circular plate-shaped reinforcing member 16 having an elliptical opening as shown in Figure 1(c) and Figure 3(a) was integrally molded in the center of the cylindrical member along the length direction. In addition, in order to reduce the weight of the reinforcing member 16, as shown in Figures 1(c) and 3(a), a circular plate-shaped reinforcing member 16 has two pairs of oval openings 16a (opening ratio: 50%), which are arranged evenly on the left and right sides near the center of the reinforcing member 16, assuming a center line.

[0072] (2) Formation of adhesive layer As the adhesive layer, a double-sided adhesive tape (manufactured by 3M Japan Ltd., adhesive transfer tape 927 / 950) whose main component is acrylic resin was used and attached to the periphery of the cylindrical member. The adhesive tape had a thickness of 50 μm.

[0073] (3) Formation of a sheet-like material for treatment area As a sheet-like material for the treatment area, three different coloring agents with different hues were added to EVA resin to create a resin molded product with a camouflage pattern with three separate hues. Next, the resin molded product was placed inside a mold, and after being foamed by heating and pressurizing, it was cut into a plate-like product having a foamed camouflage pattern. At this time, the resin molded product was not stirred and was left to undergo partial crosslinking as it was, thereby forming a camouflage-patterned sheet-like product for treatment area. Next, the foamed treatment site sheet material was cut according to the length and outer diameter of the cylindrical member, and was attached in a state of being wrapped around the cylindrical member.

[0074] (4) Sheet molding process The cylindrical member with the foamed sheet attached to its periphery was placed inside a mold with a shape having multiple concaves and convexes, and molded by heating and pressurizing to form a treatment area with multiple concaves and convexes on the surface. The density of the formed treatment area was approximately 0.3 g / cm3 at all surface locations. 3 It was. In addition, burrs and other imperfections that occur in the treatment area at the separation part of the mold were cut off after formation to make the surface smooth. Furthermore, in the cylindrical health device after the treatment area was formed, the treatment area was formed so as to cover the adhesive layer up to the edge, and the adhesive layer was not visible from the outside.

[0075] 2. Evaluation of cylindrical health devices (1) Lightweight (rating 1) The total weight of the obtained cylindrical health device was measured, and the lightness was evaluated according to the following criteria. The results obtained are shown in Table 1. ◎: Less than 500g. 〇: Less than 800g. △: Less than 1000g. ×: Over 1000g.

[0076] (2) Compression test 1 (rating 2) The central portion of the obtained cylindrical health device was subjected to a compression test based on JIS K 6767:1999, and the load-bearing capacity was evaluated according to the following criteria. The results are shown in Table 1. ◎: In the compression test, the unit area (1 cm 2 ) and no fracture or deformation occurred until a stress of 50 MPa was reached. ○: In the compression test, the unit area (1 cm 2 ) no fracture or deformation occurred until a stress of at least 45 MPa was reached. △: In the compression test, the unit area (1 cm 2 ) no fracture or deformation occurred until a stress of at least 40 MPa was reached. ×: In the compression test, the unit area (1 cm 2 ) fracture and deformation occurred at stresses of less than 40 MPa.

[0077] (3) Compression test 2 (rating 3) The ends of the obtained cylindrical health devices were subjected to a compression test based on JIS K 6767:1999, and the load-bearing capacity was evaluated according to the following criteria. The results are shown in Table 1. ◎: In the compression test, the unit area (1 cm 2 ) and no fracture or deformation occurred until a stress of 40 MPa was reached. ○: In the compression test, the unit area (1 cm 2 ) no fracture or deformation occurred until a stress of at least 35 MPa was reached. △: In the compression test, the unit area (1 cm 2 ) no fracture or deformation occurred until a stress of at least 30 MPa was reached. ×: In the compression test, the unit area (1 cm 2 ) fracture and deformation occurred at stresses of less than 30 MPa.

[0078] (4) Durability (rating 4) Therapists used the cylindrical health device to perform treatments for two hours per day for three months. After three months, the durability (adhesion) of the cylindrical health device shown in Fig. 1 etc. was evaluated according to the following criteria. The obtained results are shown in Table 1. ◎: No peeling occurred between the cylindrical member and the treatment area. ○: Peeling of the cylindrical part and treatment area was confirmed in 1-2 places, but it was still usable. △: Peeling off of the cylindrical component and the treatment area was observed in large quantities, and it was almost impossible to use. ×: The cylindrical member and the treatment area were completely separated, causing a large gap during use, making it difficult to use.

[0079] (5) Eye-catching (rating 5) The obtained cylindrical fitness equipment and a number of training tools of similar size were prepared and placed on a base together with the obtained cylindrical fitness equipment. Twenty men and women in their teens to fifties selected the training equipment and cylindrical fitness equipment lined up on a pedestal that they felt was the most eye-catching, and evaluated the eye-catchingness of the cylindrical fitness equipment shown in Figure 1 etc. according to the following criteria. The results are shown in Table 1. ◎: 15 or more out of 20 people selected the obtained cylindrical health device. 〇: More than 10 out of 20 people chose the cylindrical health device obtained. △: Five or more out of 20 people chose the obtained cylindrical health device. ×: Of the 20 people, less than 5 people selected the cylindrical health device obtained.

[0080] [Example 2] In Example 2, a cylindrical health device was produced in the same manner as in Example 1, except that the entire surface of the cylindrical member, including the edges, was formed with the same predetermined embossed pattern as in Example 1, and a compression test and other evaluations were carried out. The results are shown in Table 1.

[0081] [Example 3] In Example 3, as shown in Figures 2(a) to (c), a cylindrical health device was prepared in the same manner as in Example 1, except that second reinforcing members having four openings (opening ratio: 60%) were provided at both ends of the cylindrical health device, and a compression test and other evaluations were carried out. The results are shown in Table 1.

[0082] [Example 4] In Example 4, except that the thickness of the adhesive layer was set to 100 μm, a cylindrical health appliance was produced in the same manner as in Example 1, and its load-bearing capacity, durability, etc. were evaluated. The obtained results are shown in Table 1.

[0083] [Example 5] In Example 5, a cylindrical health device was produced in the same manner as in Example 1, except that the adhesive layer was 30 μm thick and a second reinforcing member with four openings (opening ratio: 60%) was provided at both ends of the cylindrical health device, and the load-bearing capacity, durability, etc. were evaluated. The results are shown in Table 1.

[0084] [Example 6] In Example 6, a cylindrical health appliance was produced in the same manner as in Example 1, except that the adhesive layer was 30 μm thick and no embossing was applied to the surface of the cylindrical health appliance, and the load-bearing capacity, durability, etc. were evaluated. The results are shown in Table 1.

[0085] [Comparative Example 1] In Comparative Example 1, the cylindrical health device had a treatment area of ​​a single color (one type of foamed resin), did not include a first reinforcing member, and was not embossed on the surface of the cylindrical health device. Except for this, a cylindrical health device was produced in the same manner as in Example 1, and its load-bearing capacity, durability, etc. were evaluated. The results are shown in Table 1.

[0086] Comparative Example 2 In Comparative Example 2, a cylindrical health tool was produced in the same manner as in Example 1, except that the treatment area of ​​the cylindrical health tool had a mixed pattern (two types of foamed resin), did not include a first reinforcing member, had a second reinforcing member, and was not embossed on the surface of the cylindrical health tool.The load-bearing capacity, durability, etc. were evaluated.The results are shown in Table 1.

[0087] [Table 1] Rating 1: Lightweight Evaluation 2: Compression test 1 (center) Evaluation 3: Compression test 2 (edge) Rating 4: Durability Rating 5: Eye-catching [Industrial Applicability]

[0088] As explained above, the cylindrical health device of the present invention is configured to have at least a cylindrical member and a treatment part having an adhesive layer and a foamed resin layer (with multiple irregularities) arranged around the cylindrical member, thereby providing excellent lightness, compression durability, durability in use, etc. Therefore, by bringing the cylindrical health device into contact with the human body and applying stimulation through body weight and rotation, it is possible to eliminate adhesions and tension in the fascia and muscles of the person and restore them to a normal state.

[0089] Furthermore, according to the cylindrical health tool of the present invention, the treatment area has a camouflage pattern derived from a plurality of foamed resins, which makes it highly eye-catching and highly effective in attracting customers. Furthermore, by forming a predetermined embossed pattern on the surface of the cylindrical member entirely or excluding the edges, a better balance between light weight and compression durability is achieved. [Explanation of symbols]

[0090] 10: Cylindrical health equipment 11: Adhesive layer 12: Cylindrical member 12a: Embossed pattern 12b: Predetermined distance 13: Treatment department 13a, 13b: Irregularities (protrusions) 13c: Sheet-like material (sheet-like material for treatment area) 14: Foam resin 16: Reinforcing member (first reinforcing member) 16a: opening 18: Second reinforcing member 31: Inner mold 31a: First inner mold 31b: Second inner mold 33:Outer mold

Claims

1. A cylindrical health device including, from the inside to the outside, a cylindrical member made of at least ABS resin and having an embossed pattern on the surface, an adhesive layer, and a treatment part, The treatment part is made of foamed resin, A reinforcing member is provided at least in the center along the length of the cylindrical member, The reinforcing member is plate-shaped and has an opening, The cylindrical health appliance is characterized in that the reinforcing member is fixed to a fixing portion provided on the cylindrical member.

2. A cylindrical health device including, from the inside to the outside, a cylindrical member made of at least ABS resin and having an embossed pattern on the surface, an adhesive layer, and a treatment part, The treatment part is made of foamed resin, A reinforcing member is provided at least in the center along the length of the cylindrical member, When the reinforcing member is a first reinforcing member, a second reinforcing member having a plurality of openings is provided at both ends or one end of the cylindrical member, The cylindrical health appliance is characterized in that the reinforcing member is fixed to a fixing portion provided on the cylindrical member.

3. 3. The cylindrical health device according to claim 1, wherein a non-embossed portion is provided at a predetermined distance from an end of the cylindrical member along the length of the cylindrical member, where the embossed pattern is not provided.

4. 3. The cylindrical health device according to claim 1, wherein the foamed resin of the treatment portion includes a foamed resin containing at least a first colorant, a foamed resin containing a second colorant having a hue different from that of the first colorant, and a foamed resin containing a third colorant having a hue different from that of the first colorant and the second colorant.

5. A method for manufacturing a cylindrical health device comprising, from the inside to the outside, a cylindrical member derived from at least ABS resin and having an embossed pattern on the surface, an adhesive layer, a treatment part, and a reinforcing member, the method comprising the following steps (A) to (D): (A) A step of preparing a cylindrical member to which the reinforcing member is later fixed, the adhesive layer, and a foamed sheet-like material for treatment area derived from a plurality of foaming resins. (B) A step of wrapping the foamed sheet-like material for treatment area around the cylindrical member via the adhesive layer to form a cylindrical health device. (C) A step of placing the cylindrical health device inside a mold, and then applying heat and pressure to compress and mold the sheet-like material for treatment area. (D) A step of attaching the reinforcing member to the cylindrical member via a fixing portion provided on the cylindrical member.

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