Manufacturing method for ejaculation promoter

Abstract

To provide a manufacturing method for an ejaculation promoter formed in a configuration including a two-layer structure of an internal layer and an external layer, where favorable adhesion is established between the internal layer and the external layer.SOLUTION: A manufacturing method for an ejaculation promoter, which has an at least two-layer structure including an external layer formed so as to cover the periphery of an internal layer on which an insertion part into which a user's penis is to be inserted is formed, includes a cooling process at a predetermined temperature between an internal layer formation process of forming the internal layer and an external layer formation process of forming the external layer and / or after the external layer formation process. Therefore, in manufacturing the ejaculation promoter 1 formed in the configuration including the two-layer structure of the internal layer and the external layer, the manufacturing method for the ejaculation promoter can be provided, where favorable adhesion is established between the internal layer and the external layer (the internal layer's external surface and the external layer's internal surface).SELECTED DRAWING: Figure 17

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing an ejaculation promoter, more specifically, to a method for manufacturing an ejaculation promoter that stimulates and induces ejaculation by stimulating the male penis and can also be used as a semen (sperm) collector, and that is formed with a two-layer structure including an inner layer and an outer layer. [Background technology]

[0002] An ejaculation promoter or semen (sperm) collector (hereinafter sometimes simply referred to as "ejaculation promoter, etc.") is a tubular member with an insertion opening on one end surface in the longitudinal direction and an insertion section that is a space extending from the insertion opening into the interior, and is used by inserting the penis into the insertion section through the insertion opening. In addition, various improvements have been made to the internal structure of the tubular member into which the penis is inserted, depending on the size and shape of the penis, in order to improve the close contact with the penis and the stimulation. Furthermore, such ejaculation promoters are considered to be extremely important as sperm collectors (sperm collectors, sperm collection devices, etc.) not only from the standpoint of medical research and treatment, but also from the standpoint of social demands such as the prevention of sex crimes by eliminating personal sexual desires.

[0003] Known structures of ejaculation promoters include, for example, a tubular member made of an elastic polymer such as an elastically deformable elastomer or a synthetic resin having an insertion opening and an insertion section inside that serves as a space for inserting the penis, with the inner wall of the insertion section having a plurality of small protrusions or folds formed thereon (see, for example, Patent Document 1).

[0004] The small protrusions and pleats that serve as stimulating sections formed on the inner wall of the insertion section of the tubular member are shaped to mimic the structure of the vagina, for example, by taking on straight or wavy ribs, continuous stepped shapes, or polyp-like small protrusions and pleats, and when the penis is inserted into the insertion section through the insertion opening of the tubular member, the penis is stimulated in the same way as if it were inserted into the vagina.

[0005] Also, ejaculation promoters with a two-layer structure having an inner layer and an outer layer are provided. By making the ejaculation promoter have a two-layer structure with an inner layer and an outer layer, it is easy to form the shape of the insertion part, the stimulation part, etc. in the inner layer, and the outer layer, which is formed to cover the inner layer, can be processed with a desired design, etc., making it possible to provide an ejaculation promoter with a wide range of designs. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2012-239560 A DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0007] On the other hand, when using an ejaculation promoter, it is held in the hand and moved up and down along the longitudinal direction. However, if the ejaculation promoter is constructed with a two-layer structure consisting of an inner layer and an outer layer, if the adhesion between the outer surface of the inner layer and the inner surface of the outer layer is poor, the inner layer and the outer layer will peel off during use, and there was a need to provide a means of manufacturing an ejaculation promoter in which the inner layer and outer layer are well adhered.

[0008] The object of the present invention has been made in consideration of the above-mentioned problems, and is to provide a method for manufacturing an ejaculation promoter formed with a two-layer structure including an inner layer and an outer layer, in which the inner layer and the outer layer are well bonded. [Means for solving the problem]

[0009] In order to achieve the above object, the manufacturing method of the ejaculation promoter according to the present invention includes the following steps: The device is elastically deformable, has a cylindrical shape, has an insertion opening on at least one end surface in the longitudinal direction, and has an insertion section that is a space extending from the insertion opening to the inside, and has an inner layer on the inner surface of the insertion section that forms a portion that stimulates the penis; an outer layer that is elastically deformable, has an insertion opening at a position common to the insertion opening of the inner layer, has a shape that can be grasped by hand, and is formed to cover the periphery of the inner layer, A process A includes a core mold and an inner frame mold, which are molds to be combined to form the shape of the inner layer, and attaching the core mold to the inside of the inner frame mold; A process B of injecting a molten material constituting the inner layer into the inner frame mold and cooling and solidifying the material; a step C of removing the core mold around which the shape of the inner layer is formed from the inner frame mold; A step D of attaching the core mold around which the shape of the inner layer is formed to the inside of an outer frame mold for forming the shape of the outer layer; A process E of injecting a molten material constituting the outer layer into the inside of the outer frame mold and cooling and solidifying the material; a step F of removing the core mold around which the shape of the inner layer and the shape of the outer layer are formed from the outer frame mold; a step G of removing the molded body having the inner layer and the outer layer formed thereon from the core mold having the inner layer and the outer layer formed thereon; Including, A first cooling step between the step C and the step D, for cooling the core mold having the shape of the inner layer formed therearound, and Between the steps F and G, a second cooling step is carried out to cool the core mold which has been removed and around which the shape of the inner layer and the shape of the outer layer are formed, the second cooling step being characterized by carrying out either the following (1) or the following (2). (1) Either the first cooling step or the second cooling step is carried out, and the cooling temperature is set to less than 10°C. (2) carrying out both the first cooling step and the second cooling step; The cooling temperature in both the first cooling step and the second cooling step is 10° C. or less (the above is referred to as (2)(a)), or The cooling temperature in either the first cooling step or the second cooling step is less than 10° C. (the above is referred to as (2)(b), excluding the part that overlaps with (2)(a)).

[0010] The method for manufacturing an ejaculation promotion device according to the present invention is characterized in that, in the present invention described above, (2) is carried out and the cooling temperature in at least one of the first cooling step and the second cooling step is 8°C or lower.

[0011] The method for manufacturing an ejaculation promotion device according to the present invention is characterized in that in the present invention described above, the cooling temperature in at least one of the first cooling step and the second cooling step is 5° C. or lower.

[0012] The method for producing an ejaculation promoter according to the present invention is characterized in that, in the present invention described above, (1) is carried out and the cooling temperature is 8°C or lower.

[0013] The method for producing an ejaculation promotion device according to the present invention is characterized in that, in the present invention described above, the cooling temperature is 5°C or lower.

[0014] The method for manufacturing an ejaculation promotion device according to the present invention is characterized in that, in the present invention described above, the constituent material of the inner layer contains a water-absorbent resin in combination with an elastic polymer, and the constituent material of the outer layer contains an elastic polymer as a main component.

[0015] The method for manufacturing an ejaculation promoter according to the present invention is characterized in that, in the present invention described above, the water-absorbent resin constituting the inner layer is sodium polyacrylate, and the elastic polymer constituting the inner layer and the outer layer is a thermoplastic elastomer.

[0016] The manufacturing method of the ejaculation promotion device of the present invention is characterized in that, in the present invention described above, the inner layer has a void formed therein that penetrates from the outer surface to the insertion portion, and a protrusion facing inward is formed on the inner surface of the outer layer at at least one position corresponding to the void in the inner layer. Effect of the Invention

[0017] The manufacturing method for an ejaculation promoter according to the present invention is for manufacturing an ejaculation promoter having at least a two-layer structure in which an outer layer is formed to cover the periphery of an inner layer which has an insertion portion into which the user's penis is inserted. In this method, a cooling step at a predetermined temperature is carried out between the inner layer forming step of forming the inner layer and the outer layer forming step of forming the outer layer and / or after the outer layer forming step. Therefore, it is possible to provide a manufacturing method for an ejaculation promoter formed with at least a two-layer structure including an inner layer and an outer layer, in which the inner layer and outer layer (the outer surface of the inner layer and the inner surface of the outer layer) are well adhered to each other. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view showing one embodiment of an ejaculation promotion device manufactured by a manufacturing method for an ejaculation promotion device according to the present invention. FIG. [Diagram 2] 1 is a perspective view showing one embodiment of an ejaculation promotion device manufactured by a manufacturing method for an ejaculation promotion device according to the present invention. FIG. [Diagram 3] FIG. 2 is a diagram showing the internal structure of the ejaculation promotion device of FIG. 1. [Figure 4] FIG. 4 is a partially enlarged view of FIG. [Diagram 5] FIG. 13 is a diagram showing the relationship between voids in the inner layer and protrusions in the outer layer. [Figure 6] FIG. 2 is a perspective view showing one embodiment of an inner layer. [Figure 7] FIG. 2 is a perspective view showing the internal structure of the inner layer. [Figure 8] FIG. 2 is a perspective view showing one embodiment of the internal structure of the outer layer. [Figure 9] FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 10] FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 11] FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 12] FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 13]FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 14] FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 15] FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 16] FIG. 1 is an explanatory diagram showing an example of a mold for manufacturing an ejaculation promoter. [Figure 17] FIG. 1 is a flowchart showing a method for manufacturing an ejaculation promotion device according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, an example of the configuration of the ejaculation promoting device 1 manufactured by the manufacturing method according to the present invention will be described.

[0020] (I) Configuration of ejaculation promoter 1: Fig. 1 is a perspective view showing one embodiment of the ejaculation promotion device 1 manufactured by a manufacturing method for the ejaculation promotion device 1 according to the present invention (sometimes referred to as the "manufacturing method according to the present invention"), and Fig. 3 is a diagram showing the internal structure of the ejaculation promotion device 1 of Fig. 1. Note that reference numerals are not given to all of the relevant parts, and in Fig. 3, reference numerals (22-24, 26, 32-34, 36) relating to the diameters of the inner layer 2 and outer layer 3 are not given.

[0021] Furthermore, in the ejaculation promotion device 1 exemplified in this embodiment (hereinafter sometimes simply referred to as "ejaculation promotion device 1"), the outer layer 3 is formed so that the inner layer 2 can be seen from the outside, and therefore in all of the figures mentioned above except for Figure 2 (as well as Figures 6 and 7 described below), the part corresponding to the inner layer 2 is shown with numerous "·" (dots) to make it easier to see.

[0022] On the other hand, since it is difficult to see the outline of the outer layer 3 (and the ejaculation promoter 1) in Figure 1 etc., Figure 2 shows the ejaculation promoter 1 as an external view without depicting the inner layer 2, and further, in Figure 2 only, the boundary between the small diameter portion 36 and the large diameter portions 33, 34 is shown as boundary L1, and the boundary between the small diameter portion 36 and the medium diameter portion 32 is shown as boundary L2.

[0023] The ejaculation promoter 1 illustrated in FIG. 1 to FIG. 3 can also be used as a device for collecting sperm (semen) (sperm (semen) collector or sperm (semen) collector). The inner layer 2 is elastically deformable, has a cylindrical shape, has an insertion opening S on at least one end surface in the longitudinal direction, and is formed with an insertion section 21 that is a space extending inward from the insertion opening S, and has a portion for stimulating the penis formed on the inner surface of the insertion section 21; an outer layer 3 that is elastically deformable, has an insertion opening S at a position common to the insertion opening S of the inner layer 2, has a shape that can be gripped by hand, and is formed so as to cover the periphery of the inner layer 2; The device has a configuration including:

[0024] As shown in Figure 1 etc., the ejaculation promoter 1 according to this embodiment has a portion for stimulating the user's penis (not shown) formed on the inner wall of the insertion part S. Also, as shown in Figure 1 etc., the ejaculation promoter 1 according to the present invention is formed to have at least a two-layer structure, with an outer layer 3 covering the periphery of an inner layer 2. The configurations of the inner layer 2 and the outer layer 3 constituting the ejaculation promoter 1 produced by the production method according to the present invention will be described below.

[0025] (1) Composition of inner layer 2: Fig. 4 is a partially enlarged view of Fig. 3, Fig. 5 is a diagram showing the positional relationship between the voids 25 in the inner layer 2 and the protrusions 31 in the outer layer 3, Fig. 6 is a perspective view showing one embodiment of the inner layer 2, and Fig. 7 is a perspective view showing the internal structure of the inner layer 2. Note that Fig. 5 shows the difference between the parts of the inner layer 2 that correspond to the voids 25 (the "·" (dot) is the same as in Fig. 1 etc.) and the other parts (the "·" is thicker than the others). In Figs. 6 and 7, the outer surface of the inner layer 2 is shown as 2a.

[0026] As shown in Figs. 1 to 7, the inner layer 2 constituting the ejaculation promoter 1 is elastically deformable, has a tubular shape, has an insertion opening S arranged on one end surface in the longitudinal direction (see Fig. 1, etc.), and has an insertion section 21 which is a space extending inward from the insertion opening S, and the user's penis (not shown) can be inserted through the insertion section 21.

[0027] The inner layer 2 is covered by the outer layer 3, which has a cylindrical shape that can be held in the hand of a user (not shown; the same applies below) (the outer layer 3 will be described later). In this embodiment, the inner layer 2 also has a shape that conforms to the outer layer 3, as shown in Figure 9, etc., which will be described later, and has a cylindrical shape that can be held in the hand of a user.

[0028] In this embodiment, the shape of the inner layer 2 is formed symmetrically in the longitudinal direction, with a medium diameter section 22 that has a gentle mountain shape in a planar view in the middle, and mountain-like large diameter sections 23, 24 with a diameter larger than that of the medium diameter section 22, and a small diameter section 26 that has a diameter smaller than that of the medium diameter section 22 and forms a valley.

[0029] As shown in Figures 3 and 7, in this embodiment of the ejaculation promoter 1, a portion that stimulates the penis (stimulation portion X) is formed on the inner wall of the insertion portion 21. Examples of the shape of the portion that stimulates the penis (stimulation portion X) include a convex portion (projection), a pleated shape, a wart shape, a bellows shape, a continuous stepped shape, etc., and these stimulation portions X can be formed in a predetermined arrangement.

[0030] The penis stimulating portion (stimulation portion X) formed on the inner surface (inner wall) of the insertion portion 21 may have different shapes near the insertion opening S and near the tip of the insertion portion 21, or may have different shapes and arrangements near the insertion opening S and near the approximately center of the insertion portion 21, and the shape and arrangement can be determined arbitrarily. For example, if the insertion opening S is made to have different shapes from the approximately center and tip of the insertion portion 21, a part of the penis (not shown, for example, the glans) can be given a different type of stimulation from other parts.

[0031] The inner layer 2 is preferably colored if it is to be visible from the outside through the outer layer 3 described below. In order to color the inner layer 2, a colorant may be added to the constituent material of the inner layer 2 to color the entire inner layer 2 including the inside, or only the outer surface of the inner layer 2 may be colored.

[0032] 6 and 7, the outer surface (wall surface) 2a of the inner layer 2 of the ejaculation promoter 1 exemplified in this embodiment has a plurality of voids (holes, slits, etc.) 25 formed therein, which penetrate to the insertion portion 21, which is a space formed inside the inner layer 2. In this embodiment, the voids 25 penetrating from the outer surface of the inner layer 2 to the insertion portion 21 are rhomboid-shaped (diamond (◇)-shaped) when viewed from the front, and a plurality of such rhomboid-shaped voids 25 are formed so as to penetrate from the outer surface of the inner layer 2 to the insertion portion 21.

[0033] In this way, by forming gaps 25 that penetrate to the insertion portion 21 in the outer surface 2a of the inner layer 2, the gaps 25 form a patterned design in the inner layer 2, which, together with the design of the outer shape of the inner layer 2, provides a design element. Since the inner layer 2 with such design element can be seen from the outer layer, the ejaculation promoter 1 has excellent design.

[0034] In addition, a space is formed by gap 25 on the inner surface (inner wall) of insertion portion 21, and by inserting another member (in this embodiment, protrusion 31 formed on the inner surface of outer layer 3, the tip of which penetrates through to insertion portion 21) into said space (see Figures 4 and 5, etc.), the nuance of the stimulation can be changed, thereby providing variety in the feel of use (the user can enjoy a variety of feels), resulting in an ejaculation promoter 1 that is pleasant to use.

[0035] In addition, it is sufficient that one or more voids 25 are formed on the outer surface 2a of the inner layer 2, and it is preferable that a plurality of voids are formed as shown in Figures 1 and 6, etc., in order to improve the design and efficiently add variety to the feel of use.

[0036] In addition, the shape of the voids 25 formed by penetrating from the outer surface 2a of the inner layer 2 to reach the internal insertion portion 21 is not limited to the diamond shape described above, and can be any shape, such as a polygonal shape such as a triangle, a quadrangle (including a rectangle, a square, etc.), or a pentagon when viewed from the front, a circle, an ellipse, a geometric shape, etc., and when multiple voids 25 are formed, they may have a common shape overall or multiple types of shapes. Furthermore, the area and number that can be confirmed from the outer surface 2a of the inner layer 2, the proportion of the area of ​​the outer surface 2a of the inner layer 2 (including the area of ​​voids 25; the same applies below) (taking into consideration strength, etc., it is preferable that the proportion of the area of ​​the voids 25 (as a whole) is half (50%) or less of the total area of ​​the outer surface 2a of the inner layer 2, but is not particularly limited to this), the position, etc. can all be determined arbitrarily.

[0037] (2) Outer layer 3 composition: Fig. 8 is a perspective view showing the internal structure of the outer layer 3 (only the outer layer 3) (in Fig. 8, the inner surface of the outer layer 3 is shown as 3a.) As also shown in Fig. 1 and other figures, the outer layer 3 constituting the ejaculation enhancer 1 is formed so as to cover the inner layer 2 described above.

[0038] The inner surface 3a of the elastically deformable outer layer 3 (note that since both the inner layer 2 and the outer layer 3 are elastically deformable, the ejaculation promoter 1 formed therefrom is also elastically deformable) is in close contact with the outer surface 2a of the elastically deformable inner layer 2, and the inner surface 3a of the outer layer 3 has protrusions 31 that are triangular (△, ▽) shaped (some parts are square shaped when viewed from the front (and also in cross section); the same applies to the protrusions 31) formed in positions corresponding to the gaps 25 of the inner layer 2.

[0039] In this embodiment, a protrusion 31 is formed on the inner surface of the outer layer 3 at least at one of the positions corresponding to the void 25 of the inner layer 2, and the tip of the protrusion 31 is inserted into the rhombic (diamond (◇) shaped) void 25 formed on the outer surface 2a of the inner layer 2 with the tip facing the insertion portion 21 of the inner layer 2. Note that this embodiment shows an aspect in which the tip of the protrusion 31 appears (protrudes) from the insertion portion 21 of the inner layer 2.

[0040] Specifically, in this embodiment, a configuration is shown in which one of the diamond-shaped (diamond (◇) shaped) gaps 25 formed on the outer surface 2a of the inner layer 2 is fitted with and penetrates into one of the protrusions 31 which are formed on the inner surface 3a of the outer layer 3 and have a triangular (△) and triangular (▽) shape (the latter also called an inverted triangle) shape when viewed from the front (also when viewed in cross section).

[0041] The outer surface (wall surface) 2a of the inner layer 2 in which the voids 25 are formed is in contact with the inner surface 3a of the outer layer 3, and the protrusions 31 formed on the inner surface 3a of the outer layer 3 fit into the voids 25 formed on the outer surface 2a of the inner layer 2. In addition, the tips of the protrusions 31 appear in the insertion portion 21 of the inner layer 2, and when viewed from the side of the insertion portion 21 of the inner layer 2, the tips of the protrusions 31 appear and become a part that is stimulated together with the stimulation portion X formed in the insertion portion 21 of the inner layer 2.

[0042] In the ejaculation promoter 1 of this embodiment, the protrusions 31 or the tips of the protrusions 31 that penetrate from the outer layer 3 into the insertion portion 21 of the inner layer 2 can stimulate the penis (not shown) inserted into the insertion portion 21, similar to the stimulation portion X formed in the insertion portion 21 of the inner layer 2, thereby providing a variety in the sensation of use. In this embodiment, a mode is shown in which at least one (a plurality) of protrusions 31 facing inwards are formed on the inner surface of the outer layer 3 at positions corresponding to the voids 25 of the inner layer 2.

[0043] The protrusions 31 formed on the inner surface 3a of the outer layer 3 are not limited to the triangular shape described above, and may be any shape, such as a quadrangular shape (including rectangular, square, rhombic, etc.) in front view (cross-sectional view), a polygonal shape such as a pentagon, a circular shape, an elliptical shape, a geometric shape, etc. When a plurality of protrusions 31 are formed, they may be of a common shape overall or may be of a plurality of different shapes, and the area, number, proportion of the entire outer layer 3, position, etc. may all be determined arbitrarily.

[0044] It is preferable that the tips of the protrusions 31 formed on the inner surface 3a of the outer layer 3 reach the insertion portion 21 of the inner layer 2; however, even if they do not reach that point, when the user grips the ejaculation enhancer 1 during use, the tips of the protrusions 31 may or may not touch the penis (not shown) inserted into the insertion portion 2, and this, including the presence of the gap 26, will increase the variety of sensations in use, so it is not a problem if the tips of the protrusions 31 do not reach the insertion portion 21 of the inner layer 2.

[0045] In the present invention, the outer layer 3 is designed so that the covering inner layer 2 can be seen from the outside. Since the outer layer 3 is designed in this way, the shape of the inner layer 2 with voids 25 formed on its outer surface can be seen from the outside, resulting in an ejaculation promoter 1 with excellent design. The outer layer 3 can be of any color, such as transparent (clear), translucent, or cloudy, so long as the covering inner layer 2 can be seen from the outside, but a transparent outer layer is preferable because it is easy to see and can reduce the addition of colorants and the number of processes.

[0046] The outer layer 3 has an insertion opening S common to the inner layer 2, and is tubular in shape so that it can be held by a user's hand (not shown). In this embodiment, the shape of the outer layer 3 is common to the inner layer 2 described above, and is formed symmetrically with a medium diameter section 32, which is a gentle mountain in plan view, at the approximate center in the longitudinal direction, and mountain-like large diameter sections 33, 34 having a diameter larger than that of the medium diameter section 32, sandwiching a small diameter section 36, which is a valley and has a diameter smaller than that of the medium diameter section 32. The user can grip the small diameter section 36, etc., which is the valley, by placing his or her fingers on the small diameter section 36, making it easy for the user to grip the outer layer 3.

[0047] (3) Constituent materials of the inner layer 2 and the outer layer 3: The materials used for the inner layer 2 and the outer layer 3 (the materials (constituent materials) constituting the ejaculation enhancer 1) will be described. First, as the material constituting the inner layer 2, which is elastically deformable (the object can be deformed freely (as desired) by applying a force to it, and when the force is removed, the object returns to its original shape (elastic deformation). The same applies to the outer layer 3 below), it is preferable to use a material with appropriate elasticity, stretchability, and flexibility, and it is preferable to use an elastic polymer (also called a soft resin). Examples of such elastic polymers that can be used include thermoplastic elastomers, elastomers, gel-like rubber, silicone-based resins, polystyrene-based resins, urethane-based resins, soft polyvinyl chloride (PVC) resins, and soft polyolefin-based resins. These elastic polymers may be used alone or in combination of two or more.

[0048] As the elastic polymer, including the outer layer 3 described later, it is preferable to use a thermoplastic elastomer in terms of moldability, cost, and good usability when used as a molded article. As the thermoplastic elastomer, it is particularly preferable to use a styrene-based thermoplastic elastomer such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), (hydrogenated) styrene-ethylene-propylene block copolymer (SEP), (hydrogenated) styrene-ethylene-butylene-styrene block copolymer (SEBS), (hydrogenated) styrene-ethylene-propylene-styrene block copolymer (SEPS), (hydrogenated) styrene-ethylene-propylene-styrene block copolymer (SEEPS), styrene-butadiene block copolymer (SBR), (hydrogenated) styrene-butadiene block copolymer (SEB) styrene-isoprene block copolymer (SIR), hydrogenated styrene-isoprene block copolymer (SEP), and styrene-isoprene-styrene block copolymer (SIS). These may be used alone or in combination of two or more.

[0049] Further, for example, core-shell type particulate elastomers such as natural rubber, polybutadiene, polyisoprene, polyisobutylene, neoprene, polysulfide rubber, thiokol rubber, acrylic rubber, urethane rubber, silicone rubber, epichlorohydrin rubber, ethylene propylene rubber (EPR), ethylene propylene diene rubber (EPDM), butadiene-acrylonitrile-styrene-core-shell rubber (ABS), methyl methacrylate-butadiene-styrene-core-shell rubber (MBS), methyl methacrylate-butyl acrylate-styrene-core-shell rubber (MAS), octyl acrylate-butadiene-styrene-core-shell rubber (MABS), alkyl acrylate-butadiene-acrylonitrile-styrene-core-shell rubber (AABS), butadiene-styrene-core-shell rubber (SBR), and siloxane-containing core-shell rubbers such as methyl methacrylate-butyl acrylate-siloxane, or modified rubbers thereof may be mentioned. These may be used alone or in combination of two or more.

[0050] In the present invention, it is preferable that the constituent material of the inner layer 2 contains a water-absorbing resin (also called a water-absorbing polymer) in addition to the elastic polymer described above. By using a combination of an elastic polymer and a water-absorbing resin as the constituent material of the inner layer 2, the resin is dispersed in the elastic polymer that is the base material when molded into the inner layer 2, and water absorption can be imparted to the inner layer 2. When the inner layer 2 is brought into contact with a liquid such as water (hereinafter, sometimes simply referred to as "water, etc."), the resin gels, and slippage can be generated on the surface of the insertion part 21. In addition, such a moderate slippage is the same as when lotion is poured into the insertion part 21, so the use of lotion can be minimized, and preferably, lotion can be eliminated.

[0051] The water-absorbing resin is not particularly limited, and examples thereof include polyacrylic acid salts (including crosslinked polyacrylic acid salts), polyacrylamide, hydrolysates of starch-acrylonitrile graft copolymers, crosslinked carboxymethyl cellulose, acrylic acid (salt)-vinyl alcohol copolymers, crosslinked polyoxyethylene, and thermoplastic resins containing polyalkylene oxide units.

[0052] Generally, acrylic acid polymers have a large number of carboxyl groups and are therefore highly hydrophilic, and it is preferable for the water-absorbing resin to contain a polyacrylic acid salt. If necessary, it can be crosslinked into a network structure and converted into a sodium salt form to become a gel with high water absorption, and it is particularly preferable to use sodium polyacrylate, as it shows excellent properties. Sodium polyacrylate may be used in a crosslinked form (sodium polyacrylate crosslinked form). Sodium polyacrylate is also known as a highly water-absorbing resin (highly water-absorbing polymer), and can absorb a large amount of water with the addition of a small amount.

[0053] The water-absorbing resin may be in a liquid or powder form (including powder and granules), and is preferably in a powder form. By making it in a powder form, the surface area is increased, the water-absorbing ability is further improved, and it is well dispersed in the elastic polymer that is the base material. The average particle size is not particularly limited, but is preferably 1 to 1000 μm, for example, and the shape may be a known shape such as a sphere, a plate shape, a fluid-forming shape, or an irregular shape.

[0054] The content of the water-absorbent resin relative to the elastic polymer as a constituent material of the inner layer 2 can be appropriately determined depending on the type of elastic polymer used, the type of water-absorbent resin, the required characteristics (degree of slippage), etc., and it can be considered that if the content of the water-absorbent resin is increased, slippage can be caused with a small amount of water, but it is generally preferable to make it 1 part by mass or more relative to 100 parts by mass of the elastic polymer, and more preferably to contain 1 to 100 parts by mass. If the content of the water-absorbent resin is less than 1 part by mass relative to 100 parts by mass of the elastic polymer, slippage may not occur even when contacted with water, etc., and if it is more than 100 parts by mass, it may exceed the content of the elastic polymer, affect elastic deformation, and may be slightly costly.

[0055] In addition, by increasing the content of the water-absorbent resin, the cost of the water-absorbent resin increases slightly, but the number of times it can be gelled increases, which is an advantage in that the number of times it can be used can be increased. The content of the water-absorbent resin relative to the elastic polymer is more preferably 5 to 100 parts by mass per 100 parts by mass of the elastic polymer, which is low-cost, and in order to enjoy a good feeling of use, it is even more preferably 5 to 20 parts by mass, and particularly preferably 8 to 20 parts by mass, per 100 parts by mass of the elastic polymer.

[0056] A foaming agent may be further added to the above-mentioned constituent materials. By adding a foaming agent, the softness and elasticity of the inner layer 2 become appropriate, and it is possible to make it closer to human skin. As the foaming agent, a conventionally known one can be used, for example, a chemical foaming agent such as an inorganic thermal decomposition type chemical foaming agent or an organic thermal decomposition type chemical foaming agent, a physical foaming agent, etc. The effectiveness of the application of the foaming agent is the same as that of the outer layer 3 described later.

[0057] The content of the foaming agent in the inner layer 2 is not particularly limited and can be appropriately determined depending on the desired degree of foaming, softness, etc., but for example, it is preferably 0.1 to 50 parts by mass, and particularly preferably 0.1 to 10 parts by mass, per 100 parts by mass of the elastic polymer.

[0058] Next, the constituent materials of the outer layer 3 will be described. The constituent material of the outer layer 3, which is held by the user's hand and can be elastically deformed, is preferably made of an elastic polymer as the main component of the above-mentioned materials constituting the inner layer 2. Specific examples of the elastic polymer constituting the outer layer 3 are the same as those listed for the inner layer 2, including the fact that it is preferable to use a thermoplastic elastomer, and it is particularly preferable to use a styrene-based thermoplastic elastomer, and so the description will be omitted. Note that even if the ejaculation enhancer 1 has at least a two-layer structure of the inner layer 2 and the outer layer 3 as in this embodiment, and the inner layer 2 contains a water-absorbent resin, it is not necessary to actively add a water-absorbent resin to the outer layer 3, since the insertion part 21 into which the penis is inserted is formed in the inner layer 2.

[0059] In this way, even if the ejaculation promoter 1 contains a water-absorbent resin in the elastic polymer as a constituent material of the inner layer 2, if the water-absorbent resin is contained only in the inner layer 2 where the insertion portion 21 into which the penis is inserted is formed, rather than in the entire ejaculation promoter 1, then by bringing a liquid such as water into contact with the insertion portion 21 of the inner layer 2, a slippery surface can be made to the insertion portion 21, improving the feel when used, and other effects achieved by adding the water-absorbent resin can be preferably enjoyed, while the amount of water-absorbent resin added can be limited to the inner layer 2, thereby reducing costs.

[0060] Furthermore, with respect to the outer layer 3 which preferably contains an elastic polymer as its main component, the inner layer 2 to which the water-absorbent resin has been added is basically not visible to the outside, imparting an appropriate degree of softness to the portion of the ejaculation enhancer 1 which is directly gripped, allowing the force of gripping the outer layer 3 to be smoothly transmitted to the inside, and preventing slipping even if the surface which is visible on the outside of the ejaculation enhancer 1 (outer layer 3) comes into contact with liquid such as water. Here, the "main component" may be 50% by mass or more of the entire constituent materials (excluding the softening oil), but 80% by mass or more is preferable, and 85% by mass or more is particularly preferable.

[0061] In addition, the resin material (materials) that constitutes the inner layer 2 and the outer layer 3 (constituent material) is interpreted as including an oily component, and it is preferable that the oily component contains a softening oil. The softening oil has a function of softening the thermoplastic elastomer (especially styrene-based thermoplastic elastomer, etc.) that is the base material, and by containing the softening oil, it is possible to impart appropriate flexibility to the inner layer 2 and the outer layer 3 (i.e., the ejaculation enhancer 1; the same applies below), and by adjusting the content, it is possible to adjust the softness (softness) of the inner layer 2 and the outer layer 3. The more the content of the softening oil is increased, the softer the inner layer 2 and the outer layer 3 can be imparted.

[0062] As the softening oil, a conventionally known softening oil capable of softening thermoplastic elastomers and the like can be used, for example, liquid paraffin and paraffin oil (hereinafter sometimes collectively referred to as "paraffin-based softeners"), naphthenic oils (naphthenic softeners), and aromatic oils (aromatic softeners), which are known as hydrocarbon oils, can be used. Among these, it is preferable to use paraffin-based softeners such as liquid paraffin and paraffin oil, from the viewpoint of good affinity with thermoplastic elastomers such as styrene-based thermoplastic elastomers and the like, and of being less likely to bleed.

[0063] When a softening oil is used, the content relative to the elastic polymer is not particularly limited, and may be appropriately determined based on the required softness as well as the type and content of the elastic polymer and water-absorbing resin described above. However, taking into consideration the degree of elastic deformation and flexibility of the elastic polymer that is the molded product, it is preferable to use 300 to 1100 parts by mass of softening oil, and particularly preferably 500 to 900 parts by mass, relative to 100 parts by mass of the elastic polymer.

[0064] In addition to the materials mentioned above, the constituent materials of the inner layer 2 and the outer layer 3 may include various additives, such as pigments and colorants (for the outer layer 3, the addition should be to the extent that the inner layer 2 is visible), stabilizers such as inorganic stabilizers, lubricants, impact resistance improvers, processing aids, crystal nucleating agents, reinforcing agents, flame retardants, crosslinking agents, crosslinkable monomers, weather resistance improvers, ultraviolet absorbers, antioxidants, hydrolysis resistance improvers, fungicides, antibacterial agents, light stabilizers, antistatic agents, oil components such as softening oils, antiblocking agents, release agents, fragrances, fillers, coupling agents, crosslinking agents, etc., as needed, provided the addition does not impair the objects and effects of the present invention.

[0065] (II) Manufacturing method of ejaculation promoter 1: Next, a method for manufacturing the ejaculation promoter 1 according to the present invention will be described. The ejaculation promoter 1 has a two-layer structure consisting of an inner layer 2 and an outer layer 3, and is exemplified by the configuration shown in Fig. 1 and the like, and is formed to correspond to the shape of the inner layer 2 by, for example, heating the above-mentioned constituent materials to a molten state, and then cooling and solidifying the molten constituent materials (molten resin) (inner layer forming step).

[0066] Next, the above-mentioned constituent material is heated around it to a molten state, and the molten constituent material (molten resin) is cooled and solidified to form it in accordance with the shape of the outer layer 3 so as to cover the inner layer 2 (outer layer formation process).

[0067] The manufacture of the ejaculation promoter 1 includes an inner layer forming process for forming the shape of the inner layer of the ejaculation promoter 1, and an outer layer forming process for forming the shape of the outer layer of the ejaculation promoter 1, and includes the following basic components.

[0068] (Method of manufacturing ejaculation promoter 1) A step A is to use a core mold 5 and an inner frame mold 6, which are molds for forming the shape of the inner layer 2 by combining them, and to attach the core mold 5 to the inside of the inner frame mold 6; A process B of injecting a molten material constituting the inner layer 2 into the inner frame mold 6 and cooling and solidifying the material; A step C of removing the core mold 5 around which the shape of the inner layer 2 is formed from the inner frame mold 6 (the above is an inner layer forming step consisting of steps A to C). A step D of attaching the core mold 5 around which the shape of the inner layer 2 is formed, into an outer frame mold 7 for forming the shape of the outer layer 3; A process E of injecting a molten material constituting the outer layer 3 into the outer frame mold 7 and cooling and solidifying the material; A step F of removing the core mold 5 around which the shape of the inner layer 2 and the shape of the outer layer 3 are formed from the outer frame mold 7 (the outer layer forming step is composed of steps D to F). a step G of removing the molded body (ejaculation enhancer 1) having the inner layer 2 and the outer layer 3 formed thereon from the core mold 5, the molded body having the inner layer 2 and the outer layer 3 formed thereon; Including, A first cooling step between the step C and the step D, in which the core mold 5 having the shape of the inner layer 2 formed therearound is cooled; and Between the step F and the step G, a second cooling step of cooling the core mold having the shape of the inner layer 2 and the shape of the outer layer 3 formed therearound is performed in accordance with either the following (1) or (2): Includes the following as basic components.

[0069] (Temperature condition (1) and temperature condition (2)) (1) Either the first cooling step or the second cooling step is carried out, and the cooling temperature is set to less than 10°C. (2) carrying out both the first cooling step and the second cooling step; The cooling temperature in both the first cooling step and the second cooling step is 10° C. or less (the above is referred to as (2)(a)), or The cooling temperature in either the first cooling step or the second cooling step is less than 10° C. (the above is referred to as (2)(b), excluding the part that overlaps with (2)(a)).

[0070] The first cooling step and the second cooling step will be described below. First, the first cooling step is carried out between the inner layer forming step, in which the shape of the inner layer 2 is formed, and the outer layer forming step, in which the shape of the outer layer 3 is formed. That is, between steps C and D, the core mold 5, which has been taken out and around which the shape of the inner layer 2 has been formed, is cooled, and in this state, with the shape of the inner layer 2 of the ejaculation enhancer (molded body) 1 already formed, it is cooled under a predetermined temperature condition before the outer layer 3 is formed.

[0071] The second cooling step is performed after the outer layer forming step. That is, between steps F and G, the core mold 5, which has been taken out and around which the shapes of the inner layer 2 and the outer layer 3 have been formed, is cooled, and the ejaculation enhancer (molded body) 1, which has the shapes of the inner layer 2 and the outer layer 3 formed, is cooled under a predetermined temperature condition before being removed from the core mold 5.

[0072] Regarding the cooling temperatures in the first and second cooling steps, in the manufacturing method according to the present invention, when either the first or second cooling step is performed (case (1)), the cooling temperature in the step to be performed is less than 10°C. When only either the first or second cooling step is performed, if the cooling temperature is set to "10°C", good adhesion between the inner layer 2 and the outer layer 3 may not be achieved, so the temperature is set to less than 10°C (excluding 10°C; same below) rather than below 10°C (including 10°C; same below).

[0073] In the present invention, the term "adhesion" is a concept that includes an adhesion state (such as fusion or adhesion) in which no adhesive is present on the surfaces to be bonded, and in this embodiment, an example is shown in which the inner layer 2 and the outer layer 3 are made of the same type of constituent material, and the concept is close to (thermal) fusion.

[0074] Regarding the cooling temperatures in the first cooling step and the second cooling step, when both the first cooling step and the second cooling step are carried out (case (2)), the cooling temperatures in both the first cooling step and the second cooling step are set to 10°C or less ((2)(a)), or the cooling temperature in one of the steps is set to less than 10°C ((2)(b)).

[0075] First, in the case of (2)(a), when both the first and second cooling steps are performed, setting the cooling temperature in both steps to "10°C" ensures good adhesion between the inner layer 2 and the outer layer 3, so in that case the temperature is set to 10°C or lower. In addition, in the case of (2)(b), setting the cooling temperature in one step to less than 10°C ensures good adhesion between the inner layer 2 and the outer layer 3, as in the case of (1) above (first cooling step).

[0076] In addition, (2)(b) (when both the first and second cooling steps are performed, the cooling temperature of one of the steps is less than 10°C) is to be excluded from the overlapping parts with (2)(a) (when both the first and second cooling steps are performed, the cooling temperature of both the first and second cooling steps is 10°C or less). For example, when both the first and second cooling steps are performed, if the cooling temperature of the first cooling step is 8°C and the cooling temperature of the second cooling step is 5°C, this satisfies the requirements of both (2)(a) and (2)(b), but falls under (2)(a).

[0077] In addition, (2)(b) is a method in which, when both the first cooling step and the second cooling step are performed, the cooling temperature of one step is set to less than 10° C., and the overlapping portion with (2)(a) is excluded, and it is considered that the cooling temperature of the other step in which the cooling temperature is not set to less than 10° C. exceeds 10° C. The cooling temperature of the other step in which the cooling temperature is not set to less than 10° C. (for example, the second cooling step in the case where the first cooling step is set to less than 10° C.) is preferably set to 20° C. (more than 10° C.) or less, and particularly preferably set to 15° C. (more than 10° C.) or less.

[0078] As for the first cooling step and the second cooling step, it is preferable to carry out both, as in the case of (2). By carrying out multiple cooling steps and cooling both at the time when the shape of the inner layer 2 is formed and at the time when the shape of the outer layer 3 is formed around the inner layer 2, adhesion is ensured. There is no particular lower limit on the cooling temperature, but when softening oil or the like is used as a constituent material, oil bleeding may occur, so in order to prevent this, it is preferable to set the cooling temperature at approximately 0°C (cooling temperature of 0°C or higher).

[0079] In the first and second cooling steps, even if either case (1) or case (2) is selected and carried out, the cooling temperature (in the case of selecting case (2), this refers to at least one (one step) cooling temperature, and in the case of (2)(b), it is the cooling temperature of the step in which the cooling temperature is less than 10°C) is preferably 8°C or less, and more preferably 5°C or less. By carrying out the cooling in these steps at such a temperature, the adhesion is more reliable. In addition, in the case of selecting case (2)(a) in which both the first and second cooling steps are carried out, the cooling temperature may be the same as or different from the first and second cooling steps. In the case of selecting case (2)(a), the cooling temperature in both the first and second cooling steps is preferably 10°C or less, more preferably 8°C or less, and particularly preferably 5°C or less.

[0080] Cooling is preferably carried out in a space (e.g., a refrigerator, a freezer, etc.) at a desired temperature in a state where the shape of the inner layer 2 is formed in the first cooling step, or in a state where the shape of the outer layer 3 is formed around the inner layer 2 in the second cooling step, and is particularly preferably carried out in a refrigerator or a refrigerator. In the present invention, for example, in a state where the shape of the inner layer 2 is formed or the shape of the outer layer 3 is formed around the inner layer 2 in the first cooling step or the second cooling step, the core mold 5 (described later) may be placed in such a space.

[0081] It should be noted that the "cooling temperature" is the temperature to which the object to be cooled (such as a mold or a molded body) will reach, and the cooling time may be determined based on the molding temperatures of the inner layer 2 and the outer layer 3 and the size of the cooling means (such as a refrigerator), such as the area and volume, but is preferably approximately 5 to 30 minutes, and particularly preferably 7 to 15 minutes.

[0082] The following description will be given of the inner layer forming step and the outer layer forming step in manufacturing the ejaculation promoter 1 having the shape shown in Fig. 1 etc., using the molds (core mold 5, inner frame mold 6, outer frame mold 7) for manufacturing the ejaculation promoter 1 shown in Fig. 9 to Fig. 16. Here, Fig. 9 to Fig. 16 are explanatory diagrams showing an example of the molds (core mold 5, inner frame mold 6, outer frame mold 7) for manufacturing the ejaculation promoter 1.

[0083] The inner layer forming step can be, for example, a method that basically includes the above-mentioned steps A to C. The outer layer forming step can be, for example, a method that basically includes the above-mentioned steps D to F. Note that step G after step F is a step of removing the molded body (ejaculation enhancer 1) on which the inner layer 2 and the outer layer 3 have been formed from the core mold 5 around which the shapes of the inner layer 2 and the outer layer 3 have been formed.

[0084] Figure 9 is a diagram showing one embodiment of the core mold 5, and Figure 10 is a cross-sectional view showing one embodiment of the core mold 5. The roughly rod-shaped core mold 5 shown in Figures 9 and 10 is a mold that includes a portion that will become the internal shape of the inner layer 2 of the ejaculation promoter 1, and a portion that will be formed on the outer surface 2a of the inner layer 2.

[0085] An example of a portion that defines the interior shape of the inner layer 2 is the portion that defines the shape of the insertion portion 21, etc. (the portion that defines the insertion portion, etc. 51) in the case of the ejaculation promoter 1 shown in Fig. 1, etc. Furthermore, an example of a portion that is formed on the outer surface 2a of the inner layer 2 is the portion that defines the shape of the gap 25 (the portion that defines the gap 52) in the case of the ejaculation promoter 1 shown in Fig. 1, etc.

[0086] In the void-forming portion 52, a portion (projection-forming portion 53) that forms the projection 31 that enters the void 25 from the inner surface 3a of the outer layer 3 and that is made of a recess, and an insertion port-forming portion 54 that spreads below the insertion portion-forming portion 51 are formed. The outer frame mold 7 described later is an outer frame mold 7 "for forming the shape of the outer layer 3", but the outer frame mold 7 mainly forms the shape that can be confirmed from the outside of the ejaculation enhancer 1, and there is no problem if a part of the shape of the inner side of the outer layer 3 (for example, the projection 31 in this embodiment, etc.) is formed including the core mold 5 (or the inner frame mold 6). In other words, regarding the core mold 5 and the inner frame mold 6 that are "molds for combining to form the shape of the inner layer 2", even if the core mold 5 and the inner frame mold 6 are combined to form not only the shape of the inner layer 2 but also a part of the shape of the outer layer 3, or even if the outer frame mold 7 "for forming the shape of the outer layer 3" is combined with the core mold 5 and the inner frame mold 6 to form a part of the shape of the outer layer 3 rather than forming the shape of the outer layer 3, these are still included in the present invention.

[0087] (A) a step of using a core mold 5 and an inner frame mold 6, which are molds for combining to form the shape of the inner layer 2, and attaching the core mold 5 to the inside of the inner frame mold 6 (step A): To manufacture the ejaculation promoter 1 having the shape shown in Fig. 1 etc., first, the core mold 5 shown in Fig. 9 etc. is attached inside one of the split inner frame molds 6 as shown in Fig. 11. Fig. 11 is a diagram showing the state in which the core mold 5 is attached to one of the split inner frame molds 6.

[0088] The inner frame mold 6 for forming the shape of the inner layer 2 is a mold capable of forming the external shape of the inner layer 2, and has a shape that allows the core mold 5 to be attached (fitted) inside. After the core mold 5 is attached to one of the inner frame molds 6, it is closed and clamped with the other inner frame mold (not shown), which is a split mold. The shapes of one inner frame mold 6 and the other inner frame mold are approximately the same, and are integrated by being attached and fitted together so as to sandwich the core mold 5. The core mold 5 and the inner frame mold 6 are combined to enable the shape of the inner layer 2 to be molded, and the inner frame mold 6 is hollowed out to match the shape of the inner layer 2 so that the external shape of the inner layer 2 can be formed.

[0089] (B) A step of injecting a material constituting the inner layer 2 in a molten state into the inside of the inner frame mold 6 and cooling and solidifying the material (step B): In this manner, with the two split inner frame molds 6 to which the inner core mold 5 is attached clamped together, a molten resin material for forming the inner layer 2 is injected into the inner frame mold 6 from the side where the material injection port 61 is formed. When injected, the molten resin material penetrates into the core mold 5 and between the core mold 5 and the inner frame mold 6, and forms the shape of the inner layer 2 including the insertion portion 21, the stimulation portion X, the gap 25, etc.

[0090] After the injection of the molten resin material is completed, the material is cooled and solidified, and then the inner frame mold 6 is opened. The molding temperature may be appropriately determined depending on the resin material used, etc., and is preferably 130 to 190°C, and particularly preferably 160 to 180°C (the same applies to the molding temperature for the outer layer 3 in (E) described later). The cooling may be water cooling or natural cooling, but water cooling is preferred. The cooling performed after the injection of the molten resin material is different from the cooling in the first cooling step and the second cooling step described above (this also applies to the cooling performed after the injection of the molten resin material in step (E) described later).

[0091] (C) A step of removing the core mold 5 around which the shape of the inner layer 2 has been formed from the inner frame mold 6 (step C): Fig. 12 is a diagram showing the state in which the inner layer 2 is formed around the core mold 5, and Fig. 13 is a cross-sectional view showing the state in which the inner layer 2 is formed around the core mold 5. As shown in Fig. 12 and other figures, when the inner frame mold 6 is opened, the core mold 5 with the inner layer 2 formed around it appears. The resin material for forming the inner layer 2 covers the insertion part etc. forming part 51 in a clamped state, and forms the insertion part 21 etc. inside it, and the stimulation part X is formed in the insertion part 21. Also, the insertion opening forming part 54 forms the insertion opening S, which is a hole connected to the insertion part 21 etc.

[0092] Meanwhile, due to the presence of the void-forming portions 52 of the core mold 5, voids 25 communicating with the insertion portion 21 are formed on its outer surface. The inner frame mold 6 is hollowed out so as to present the outer shape of the inner layer 2 at the inside where the core mold 5 is attached, so that the resin material fills between the void-forming portions 52 around the core mold 5 and is cooled and solidified to form the shape of the inner layer 2 shown in Fig. 6 and the like. Note that, if the first cooling step is to be carried out, it will be carried out after the step (C).

[0093] (D) A step of attaching the core mold 5 around which the shape of the inner layer 2 has been formed, into an outer frame mold 7 for forming the shape of the outer layer 3 (step D): Next, the core mold 5 with the inner layer 2 formed around its periphery as shown in Fig. 12 etc. (without removing the inner layer 2 from the core mold 5) is attached as it is inside one of the outer frame molds 7, which is a split mold, as shown in Fig. 14. Fig. 14 is a diagram showing the state in which the core mold 5 with the inner layer 2 formed around its periphery is attached inside the outer frame mold 7.

[0094] The outer frame mold 7 is a mold capable of forming the outer diameter of the outer layer 3, and has a shape that allows the core mold 5 (core mold 5 with the inner layer 2 formed around it) in the state shown in Fig. 14 to be attached (fitted) therein. After the core mold 5 is attached to one of the outer frame molds 7, they are closed and clamped with the other outer frame mold (not shown), which is a split mold.

[0095] One outer frame mold 7 and the other outer frame mold have the same shape, and are integrated by being attached and mated so as to sandwich the core mold 5 around which the inner layer 2 is formed. The core mold 5 around which the inner layer 2 is formed and the outer frame mold 7 are combined to enable the shape of the outer layer 3 to be formed, and the outer frame mold 7 is hollowed out to match the shape of the outer layer 3 so that the outer shape of the outer layer 3 can be formed.

[0096] (E) A step of injecting a molten material constituting the outer layer 3 into the inside of the outer frame mold 7 and cooling and solidifying the material (step E): With the two split outer frame molds 7 clamped together, the molten resin material for constituting the outer layer 3 is injected into the interior of the outer frame mold 7 (between the inner surface of the outer frame 7 and the core mold 5 around which the inner layer 2 is formed) from the side where the material injection port 71 is formed, thereby forming the outer layer 3 including the protrusions 31 and the like. After the injection of the molten resin material is completed, the resin material is cooled by water cooling or the like (as described above, this is separate from the cooling in the first cooling step and the second cooling step), and once solidified, the outer frame mold 7 is opened.

[0097] (F) A step of removing the core mold 5 around which the shapes of the inner layer 2 and the outer layer 3 are formed from the outer frame mold 7 (step F): When the outer frame mold 7 is opened, a molded product (ejaculation promoter 1) is obtained in which the inner layer 2 is formed around the core mold 5 and the outer layer 3 that allows the inner layer 2 to be visually observed is formed around the inner layer 2. Fig. 15 is a diagram showing a state in which the inner layer 2 is formed around the core mold 5 and the outer layer 3 that allows the inner layer 2 to be visually observed is formed around the inner layer 2, and Fig. 16 is a cross-sectional view showing a state in which the inner layer 2 is formed around the core mold 5 and the outer layer 3 that allows the inner layer 2 to be visually observed is formed around the inner layer 2. Fig. 15 shows the inner layer 2 and outer layer 3 (ejaculation promoter 1) cut in half perpendicular to the length direction so that the existence of the core mold 5 can be easily seen.

[0098] The resin material for forming the outer layer 3, in the clamped state, covers the core mold 5 on which the inner layer 2 is formed, enters the protrusion-forming portion 53 consisting of a recess formed in the void-forming portion 52, and forms protrusions 31 that enter the voids 25 of the inner layer 2. The outer frame mold 7 is hollowed out so as to have the outer shape of the outer layer 3 for the inside where the core mold 5 on which the inner layer 2 is formed is attached, so that the resin material enters the periphery of the core mold 5 on which the inner layer 2 is formed, and is cooled and solidified to form the shape of the outer layer 3 shown in Figures 1 and 8. Note that, if a second cooling step is to be performed, it will be performed after the step (F).

[0099] (G) a step of removing the molded body having the inner layer 2 and the outer layer 3 formed thereon from the core mold 5, the molded body having the inner layer 2 and the outer layer 3 formed thereon (step G): Then, the formed body (ejaculation enhancer 1) with the inner layer 2 and the outer layer 3 formed thereon is removed from the core mold 5, thereby obtaining the ejaculation enhancer 1 as shown in FIG. 1 and the like.

[0100] Fig. 17 is a diagram showing a flow chart of a method for manufacturing an ejaculation promotion device according to the present invention. Note that Fig. 17 shows the case (2) in which both the first cooling step and the second cooling step are performed, while in the case (1), either the first cooling step or the second cooling step shown in Fig. 17 is performed.

[0101] (III) How to use the ejaculation enhancer 1: An example of how to use the ejaculation enhancer 1 according to this embodiment will be described below. First, an appropriate amount of water is poured into the insertion portion 21 of the inner layer 2 from the insertion opening S of the ejaculation enhancer 1. By pouring water into the insertion portion 21 of the inner layer 2, the surface of the insertion portion 21 becomes gelatinous, and the surface of the insertion portion 21 becomes appropriately slippery.

[0102] Next, the penis (not shown) is inserted into the insertion part 21 through the insertion opening S. After inserting the penis through the insertion opening S into the insertion part 21 formed in the inner layer 2, whose surface is slippery due to contact with water or the like, the user grasps the ejaculation promoter 1 and moves it up and down appropriately, preferably along the longitudinal direction of the penis, whereby the penis is stimulated by the stimulation part X formed inside the insertion part 21 of the ejaculation promoter 1. In addition, in this embodiment, a gap 25 is formed on the outer surface of the inner layer 2 of the ejaculation promoter 1, and a protrusion 31 enters the gap 25 from the inner surface of the outer layer 3. The protrusion 31 (the tip of the protrusion 31) can also stimulate the inserted penis in the same way as the stimulation part X.

[0103] In addition, when the user grips the ejaculation enhancer 1, the penis is compressed by the inner layer 2 through the outer layer 3 that is formed to cover the periphery, transmitting a feeling of tightness. After the user ejaculates by such an operation, a desired amount of sperm (semen) is collected from the insertion opening S, and the sperm (semen) remaining in the insertion part 21, which is the internal space of the inner layer 2, etc. is washed away. The sperm (semen) may also be collected by inserting a dropper or the like into the insertion opening S and sucking it up.

[0104] The above-mentioned method of use shows a mode in which an appropriate amount of water-absorbent resin is added to the elastic polymer as a constituent material of the inner layer 2, and a liquid such as water is brought into contact with the insertion portion 21 of the inner layer 2, thereby making the surface of the insertion portion 21 slippery, but the method of use of the ejaculation enhancer 1 is not limited to this. That is, even in cases where the constituent material of the inner layer 2 does not contain a water-absorbent resin, there is no problem in applying lotion or the like to the inner layer 2 to make it slippery.

[0105] (IV) Effects of the present invention: The manufacturing method of the ejaculation promoter 1 of the present invention described above is a method for manufacturing an ejaculation promoter 1 having at least a two-layer structure in which the outer layer 3 is formed to cover the inner layer 2 having the insertion portion 21 into which the user's penis is inserted. In this method, a cooling step at a predetermined temperature is carried out between the inner layer formation step of forming the inner layer 2 and the outer layer formation step of forming the outer layer 3 and / or after the outer layer formation step. Therefore, it is possible to provide a manufacturing method for an ejaculation promoter 1 formed of at least a two-layer structure including the inner layer 2 and the outer layer 3, in which the inner layer 2 and the outer layer 3 (the outer surface 2a of the inner layer and the inner surface 3b of the outer layer) are well bonded to each other.

[0106] (V) Variations of the embodiment: The above-described aspects show one aspect of the present invention, and the present invention is not limited to the above-described embodiments, and it goes without saying that modifications and improvements that have the configuration of the present invention and can achieve the object and effect are included in the contents of the present invention. Furthermore, the specific structure and shape, etc., when implementing the present invention may be other structures and shapes, etc., as long as the object and effect of the present invention can be achieved. The present invention is not limited to the above-described embodiments, and modifications and improvements that can achieve the object of the present invention are included in the present invention.

[0107] For example, in the above-described embodiment, the shape of the ejaculation promoter 1 to be manufactured is shown as being such that a plurality of diamond-shaped voids 25 are formed on the outer surface 2a of the inner layer 2. However, the shape of the ejaculation promoter 1 may be determined arbitrarily, such as by forming voids 25 on the outer surface 2a of the inner layer 2, or by determining whether or not the voids 25 or the protrusions 31 are formed (and whether they enter the voids 25) in the case where the protrusions 31 formed on the inner surface 3a of the outer layer 3 are inserted into the voids 25. All of the shapes, including the shape of the outer layer 3 and the shape of the insertion portion 21 of the inner layer 2, can be appropriately determined as desired.

[0108] That is, the structure of the ejaculation promoter 1 is such that it is elastically deformable, has a tubular shape, has an insertion opening S on at least one end surface in the longitudinal direction, and has an insertion section 21 which is a space extending inward from the insertion opening S, and the inner surface of the insertion section 21 is formed with an inner layer 2 in which a portion for stimulating the penis is formed, and the inner layer 3 is elastically deformable, has an insertion opening S at a position common to the insertion opening S of the inner layer 2, is shaped to be grippable in the hand, and is formed so as to cover the periphery of the inner layer 2, so long as the inner layer 2 and the outer layer 3 have any shape. In addition, the specific structure and shape when implementing the present invention may be other structures and shapes within the scope of the invention in which the object of the present invention can be achieved. EXAMPLES

[0109] The present invention will be described in more detail below based on examples and comparative examples, but the present invention is not limited to these.

[0110] [Examples 1 to 17, Comparative Examples 1 to 5] For the ejaculation promoter shown in Figure 1 etc., following steps (A) to (G) described in "(II) Manufacturing method of ejaculation promoter 1:" above, the inner layer shape and the outer layer shape were manufactured in accordance with the following details.

[0111] Specifically, ejaculation promoters (Examples 1 to 8, Comparative Examples 1 to 5) were manufactured in the shapes shown in Figures 1 to 8. The molds used for molding were those shown in Figures 9 to 16. The constituent materials and molding conditions used are shown below.

[0112] (Materials used) Inner layer: 8 parts by weight of powdered sodium polyacrylate added to 100 parts by weight of thermoplastic elastomer (hydrogenated styrene-based thermoplastic elastomer (SEBS)) Outer layer: Thermoplastic elastomer used in the inner layer (hydrogenated styrene-based thermoplastic elastomer (SEBS))

[0113] The materials constituting the inner and outer layers further contained softening oil (liquid paraffin) in an amount of 800 parts by mass per 100 parts by mass of SEBS.

[0114] The inner layer was colored by adding 0.38 parts by mass of a coloring agent (white) to 100 parts by mass of SEBS, while the outer layer was made transparent by using only SEBS.

[0115] The molding conditions were a molding temperature of 160-180°C (for both the inner and outer layers), and after injection and pouring, the molded product was cooled and solidified with water in the mold. The shape of the ejaculation promoter is as shown in Figure 1, etc., and the ratio of the area of ​​the voids (total) to the area of ​​the outer surface of the inner layer was approximately 44% of the total area of ​​the outer surface of the inner layer.

[0116] (Manufacturing method of ejaculation promoter) (i) Production of inner layer (inner layer formation process: step (A) to step (C)): First, the core mold shown in Fig. 9 was attached inside one of the inner frame molds, which was a split mold, and closed with the other inner frame mold, as shown in Fig. 11. The molten resin material for forming the inner layer was injected from the side where the material injection port was formed, and the material was cooled and solidified by water cooling, and then the split mold (inner frame mold) was opened, and the core mold with the inner layer formed around it, as shown in Fig. 12, was taken out.

[0117] Next, for those in which the first cooling step was carried out (Examples 3 to 17 and Comparative Examples 3 to 5), the core molds around which the inner layer was formed were placed in a refrigerator at the temperature shown in Table 1 below, and cooled for 10 minutes. For those in which the first cooling step was not carried out (Examples 1 and 2, and Comparative Examples 1 and 2), the core molds around which the inner layer was formed were directly subjected to (ii).

[0118] (ii) Production of outer layer (outer layer forming process: Step (D) to Step (F)): The core mold with the inner layer formed around it obtained in (1) was attached inside one of the split outer frame molds without removing the inner layer from the core mold, as shown in Figure 14. With the other split outer frame mold closed, a molten resin material (thermoplastic elastomer (SEBS), which is an elastic polymer) for forming the outer layer was injected from the side where the material injection port was formed, and after the material was cooled and solidified, the outer frame mold was opened to obtain a molded product in which a transparent outer layer was molded around the inner layer, as shown in Figure 15.

[0119] Next, for those that underwent the second cooling step (Examples 1 to 11, 14 to 17, and Comparative Examples 2, 4, and 5), the molded body in which a transparent outer layer was molded around the inner layer was placed in a refrigerator set to the temperature listed in Table 1 below, and cooled for 13 minutes.

[0120] (iii) Removal of the ejaculation promoter (step (G)): Then, the molded bodies were removed from the core mold for those that had undergone the second cooling step and those that had not undergone the second cooling step (Examples 12 and 13, and Comparative Examples 1 and 3). In all of the molded bodies, a colored inner layer and a transparent outer layer through which the inner layer could be seen were formed.

[0121] [Appearance and elasticity of the ejaculatory organ] No coloring agent was added to the material constituting the outer layer of the ejaculation promoter, making it transparent. As a result, the appearance of the ejaculation promoters of Examples 1 to 17 and Comparative Examples 1 to 5 was such that the shape of the inner layer, including the diamond-shaped gaps, could be seen from the outside, as shown in Figure 1, etc., and it was confirmed that the ejaculation promoters were excellent in design. In addition, the degree of elastic deformation of the ejaculation promoters of Examples 1 to 17 and Comparative Examples 1 to 5 was also found to be freely elastically deformable, including the inner layer and outer layer.

[0122] [Test Example 1] Evaluation of the degree of adhesion between the outer and inner layers: The degree of adhesion between the outer surface of the inner layer and the inner surface of the outer layer of the obtained ejaculation promoters of Examples 1 to 17 and Comparative Examples 1 to 5 was compared and evaluated using the following evaluation criteria by using the ejaculation promoter (using it in accordance with the above-mentioned "(III) Method of using ejaculation promoter 1:" and applying force to move it up and down). The evaluation results are shown in Table 1, together with whether or not the first and second cooling steps were performed and the cooling temperatures.

[0123] The test was graded on a 5-point scale, with 5 to 2 being a pass (5 being the best, followed by 4, 3, 2), and 1 being a fail. "Normal force" refers to the force applied when using the ejaculation enhancer (when gripping it and moving it up and down). "Force greater than normal" in "3" refers to excessive force (approximately 40% more force than normal) that is applied unconsciously or due to a heightened sense of use during use, compared to the normal force. "Force greater than 4" in "5" below and "force greater than 3" in "4" are also assumed to be approximately 20% more force than "4" for "5" and 20% more force than "3" for "4".

[0124] (Evaluation Criteria) Evaluation: Content 5: The inner surface of the outer layer and the outer surface of the inner layer are bonded smoothly and will not peel off even if you try to peel it off with more force than usual (more than 4). 4: The inner surface of the outer layer and the outer surface of the inner layer are bonded without any problems, and they will not peel off even if you try to peel them off with more than normal force (more than the ``force greater than normal'' in 3). 3: The inner surface of the outer layer and the outer surface of the inner layer are bonded smoothly and will not peel off even if you try to peel it off with greater than normal force. 2: The inner surface of the outer layer and the outer surface of the inner layer are bonded together without any problems, and cannot be peeled off even when trying to peel them off with normal force. As stated in "3," "If you try to peel it off with more force than normal, it will come off." 1: It comes off when you try to peel it off with normal force.

[0125] (Whether the first and second cooling processes were carried out, the cooling temperature, and the evaluation results) [Table 1]

[0126] As shown in Table 1, Either the first cooling step or the second cooling step is carried out, and the cooling temperature is less than 10°C in Examples 1 and 2, as well as Examples 12 and 13 (all of which are case (1)); Examples 14 to 17 in which both the first cooling step and the second cooling step were performed, and either one of the cooling steps was performed at a cooling temperature of less than 10°C (these are the cases of (2)(b). Note that in these cases, the other cooling step was performed at a cooling temperature of 15°C), Examples 3 to 11 in which both the first cooling step and the second cooling step were performed and the cooling temperature in the performed cooling step was 10° C. or lower (these are the cases of (2)(a)); In all cases, the adhesion between the inner layer (outer surface) and the outer layer (inner surface) was good, and they did not come off even when an attempt was made to peel them off using normal force (ratings of 5, 4, 3, and 2 above).

[0127] In the case of (2)(a) in which both the first and second cooling steps were performed and the cooling temperature in the performed cooling steps was 10°C or lower, the adhesion state was excellent in Examples 5, 8, 10, and 11 in which the cooling temperature in either the first cooling step or the second cooling step was 5°C (Evaluations 5 and 4 above), and in particular, Example 11 in which the cooling temperature in both the first cooling step and the second cooling step was 5°C was excellent (Evaluation 5 above).

[0128] on the other hand, Comparative Example 1 in which neither the first cooling step nor the second cooling step was performed; Comparative Example 2 and Comparative Example 3 in which either the first cooling step or the second cooling step is carried out, but the cooling temperature in the carried out cooling step is 10° C. or higher; Comparative Example 4 and Comparative Example 5, in which both the first cooling step and the second cooling step are carried out, but the cooling temperature in the carried out cooling step is 10° C. or higher; In all cases, the adhesion between the inner layer (outer surface) and the outer layer (inner surface) was poor, and they came off when tried to peel off with normal force (rating 1 above). [Industrial Applicability]

[0129] The present invention has extremely high industrial applicability as a means of manufacturing an ejaculation promoter that has excellent adhesion between the inner and outer layers, and can be used not only for medical purposes but also to help build a healthy society by suppressing men's sexual urges. [Explanation of symbols]

[0130] 1... Ejaculation accelerator 2 …… Inner layer 2a …… Outer surface of inner layer 21 …… Insertion section 22 …… Medium diameter part 23,24 …… Large diameter section 25 …… void 26 …… Small diameter part 3... Outer layer 3a …… Inner surface of outer layer 31 …… Protrusion 32 …… Medium diameter part 33,34 …… Large diameter section 36 …… Small diameter part 5 …… Core type 51 …… Insertion section etc. forming section 52...Void forming part 53 …… Protrusion forming part 54 …… Insertion port forming section 6 …… Inner frame type 61 …… Material injection port 7 …… Outer frame type 71 …… Material injection port S …… Insertion port X... Stimulation part L1,L2... Boundary

Claims

1. The device is elastically deformable, has a cylindrical shape, has an insertion opening on at least one end surface in the longitudinal direction, and has an insertion section that is a space extending from the insertion opening to the inside, and has an inner layer on the inner surface of the insertion section that forms a portion that stimulates the penis; an outer layer that is elastically deformable, has an insertion opening at a position common to the insertion opening of the inner layer, has a shape that can be grasped by hand, and is formed to cover the periphery of the inner layer, A step A is to use a core mold and an inner frame mold, which are molds to be combined to form the shape of the inner layer, and to attach the core mold to the inside of the inner frame mold; A process B of injecting a molten material constituting the inner layer into the inner frame mold and cooling and solidifying the material; a step C of removing the core mold around which the shape of the inner layer is formed from the inner frame mold; A step D of attaching the core mold around which the shape of the inner layer is formed to the inside of an outer frame mold for forming the shape of the outer layer; A process E of injecting a molten material constituting the outer layer into the inside of the outer frame mold and cooling and solidifying the material; a step F of removing the core mold around which the shape of the inner layer and the shape of the outer layer are formed from the outer frame mold; a step G of removing the molded body having the inner layer and the outer layer formed thereon from the core mold having the inner layer and the outer layer formed thereon; Including, a first cooling step between the step C and the step D, for cooling the core mold having the shape of the inner layer formed therearound; and A method for manufacturing an ejaculation promotion device, characterized in that a second cooling step is carried out between step F and step G, in which the core mold removed and around which the shape of the inner layer and the shape of the outer layer are formed is cooled, by carrying out either (1) or (2) below. (1) Either the first cooling step or the second cooling step is carried out, and the cooling temperature is set to less than 10°C. (2) carrying out both the first cooling step and the second cooling step; The cooling temperature in both the first cooling step and the second cooling step is 10° C. or less (the above is referred to as (2)(a)), or The cooling temperature in either the first cooling step or the second cooling step is less than 10° C. (the above is referred to as (2)(b), excluding the part that overlaps with (2)(a)).

2. Implement the above (2), 2. The method for manufacturing an ejaculation promoter according to claim 1, wherein the cooling temperature in at least one of the first cooling step and the second cooling step is 8[deg.] C. or lower.

3. 3. The method for manufacturing an ejaculation promoter according to claim 2, wherein the cooling temperature in at least one of the first cooling step and the second cooling step is 5° C. or lower.

4. Carry out the above (1), The method for manufacturing an ejaculation promoter according to claim 1, characterized in that the cooling temperature is 8°C or lower.

5. The method for manufacturing an ejaculation promoter according to claim 4, characterized in that the cooling temperature is 5°C or lower.

6. The material of the inner layer contains a water-absorbent resin in combination with an elastic polymer, 2. The method for manufacturing the ejaculation promoting device according to claim 1, wherein the material constituting the outer layer contains an elastic polymer as a main component.

7. The water-absorbent resin constituting the inner layer is sodium polyacrylate, 7. The method for manufacturing an ejaculation promoter according to claim 6, wherein the elastic polymer constituting the inner layer and the outer layer is a thermoplastic elastomer.

8. The inner layer has a void formed therein, the void penetrating from the outer surface to the insertion portion.

2. The method for manufacturing an ejaculation promoting device according to claim 1, wherein an inward protrusion is formed on the inner surface of the outer layer at least at one position corresponding to the void of the inner layer.

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