Manufacturing method of a neckband for cooling

Abstract

To provide a manufacturing method of a cooling neck band.SOLUTION: A manufacturing method of a cooling neck band includes: a first pressure-bonding step for pressure-bonding at least two laminated raw materials and forming a first molding by a mold part; an incision step for incising an end part of the first molding by a cutting part after the first pressure-bonding step; an attaching step for attaching an injection port to the end part of the first molding by an attaching part after the incision step; and a conversion step for converting an inner peripheral surface of the first molding into an outer peripheral surface by turning over the inner peripheral surface outside by a suction part after the attaching step. The inner peripheral surface of the first molding is turned over outside when the suction part sucks the air in the first molding in the state that the suction part is inserted into the injection port.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a cooling neckband. More specifically, when manufacturing by press molding, the present invention relates to a method for manufacturing a cooling neckband capable of improving the wearing comfort by forming the outer peripheral surface of the manufactured neckband smoother.

Background Art

[0002] In recent years, with the rapid progress of global warming, various adverse effects on the natural environment and human society have been reported. Among them, in particular, the increase in sweltering days due to rising temperatures in summer not only makes it difficult to carry out normal social life but also causes a problem that when performing physical labor or sports outdoors, the body temperature rises rapidly, making it easier to suffer from heat stroke.

[0003] Particularly, during the hot summer months, the area around the neck also gets hot. When doing sports for a long time, the body temperature rises and sweat flows around the neck. Therefore, to cool the area around the neck, there are methods such as wetting a towel or handkerchief with water and wrapping it around the neck. However, in the method of wetting a towel or handkerchief with water and wrapping it around the neck, there is a problem that the moisture evaporates quickly due to the hot summer sunlight and body temperature, so the cold insulation effect cannot be sustained.

[0004] Therefore, as a measure to solve such problems, in recent years, various cooling neckbands that, when worn around the neck in a cooled state on hot days, slowly melt while absorbing the heat of the human body and maintaining a certain temperature and coolness have been developed and patent applications have been filed.

[0005] In Patent Document 1, as shown in FIG. 1, the cooling tube 1 includes a tube main body 10 and a cover portion 20. A wearable cooling tube is proposed that contains a cooling medium inside, includes a polymer film layer formed in a curved shape at least in part, and a fiber layer that wraps around the polymer film layer and contains moisture, and the fiber layer is cooled by the evaporation of the moisture.

[0006] In addition, as shown in FIG. 2 of Patent Document 2, a neck ice cooling package is proposed in which a tube that extends in the longitudinal direction is formed by extrusion molding, and is configured such that convex shapes, i.e., a contact portion 12 that contacts the neck and an air flow portion 13 disposed therebetween, are repeated by vacuum thermoforming, and both longitudinal ends 11 are finished by high frequency.

[0007] In addition, as shown in FIG. 3 of Patent Document 3, a temperature-adjustable neck cooling tube is proposed that has a structure in which a pair of nipples 30 and a fixing ring 40 are provided at both ends 11 of a tube body 10 formed such that both longitudinal ends 11 face each other so as to be wearable around the neck.

[0008] However, in the case of a conventional neck band, since protrusions or the like are formed on the outer peripheral surface and it is not smooth, there is a problem that it is not aesthetically pleasing and the wearing feeling is poor.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0010] The present invention has been made to solve the problems of the prior art as described above, and an object thereof is to provide a method for manufacturing a cooling neckband capable of making the outer peripheral surface into a smoother shape, thereby improving the wearing feeling.

[0011] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention not mentioned here will be clearly understood by those having ordinary knowledge in the technical field to which the present invention pertains from the following description.

Means for Solving the Problems

[0012] In a method for manufacturing a cooling neckband according to a preferred embodiment of the present invention, a first crimping step of forming a first molded product by crimping at least two laminated raw materials with a mold part, a cutting step of cutting the end of the first molded product by a cutting part after the first crimping step, a mounting step of attaching an injection port to the end of the first molded product by a mounting part after the cutting step, and a conversion step of converting the inner peripheral surface of the first molded product to the outer peripheral surface by turning it inside out by a suction part after the mounting step, wherein the inner peripheral surface of the first molded product is turned inside out by sucking air inside the first molded product with the suction part inserted into the injection port.

[0013] Further, according to a preferred embodiment of the present invention, after the conversion step, a filling step of inserting a filling material into the first molded product by a filling part, a cutting step of cutting the injection port by the cutting part after the filling step, and a second crimping step of forming a second molded product by crimping the first molded product by the mold part after the cutting step are further included, wherein the filling material is filled into the first molded product with the filling part inserted into the injection port.

[0014] Furthermore, the mold part according to a preferred embodiment of the present invention is characterized in that the two raw materials are high-frequency pressure-bonded to form the first molded article.

[0015] Furthermore, according to a preferred embodiment of the present invention, the inner peripheral surface of the first molded article is turned inside out in a form that passes through the injection port, so that the seam formed in the high-frequency pressure-bonded portion is located inside the first molded article.

[0016] Furthermore, according to a preferred embodiment of the present invention, the first molded article includes a plurality of space portions in which an empty space is formed inside the first molded article, and a connecting portion that communicates the space portions adjacent to the space portions.

Advantages of the Invention

[0017] By the means for solving the above problems, the manufacturing method of the cooling neckband of the present invention turns the inner peripheral surface of the first molded article inside out in a form that passes through the injection port, so that the seam formed in the high-frequency pressure-bonded portion is located inside without being exposed to the outside. As a result, when wearing the cooling neckband, it has a smooth outer peripheral surface, and it is possible to provide a manufacturing method of a cooling neckband that can improve the wearing feeling.

[0018] More specifically, in the case of a conventional neck band with an edge (edge) on the outer peripheral surface, since the edged portion is formed thicker, friction occurs, causing problems such as skin damage and reduced thermal efficiency. In contrast, in the case of the cooling neck band of the present invention, since there is no edged portion, heat can flow freely, and the heat from the skin can be transmitted more efficiently into the interior of the neck band. The cooling material can adhere more closely to the skin of the wearer and absorb the heat from the skin more quickly. Also, after the forming operation of the neck band, by manufacturing it by inverting it through air injection, the convection phenomenon can be minimized so that the connection passage can circulate constantly, improving the cooling holding time, and there is an advantage that the thermal energy efficiency, the surface flexibility, and the wearing feeling can be improved. Further, in the case of a conventional neck band with an edge, since the thermal energy generated at the portion in contact with the skin receives the resistance of the edge, the thermal energy stays at the edge, inhibiting the circulation of the cooling energy. In contrast, in the case of the cooling neck band of the present invention, the thermal energy generated at the portion in contact with the skin circulates without being affected by the edge, pushing aside the cooling energy on the back surface and moving in the direction of the thermal energy. Therefore, there is an advantage that the instantaneous cooling effect is high and the duration is long.

[0019] The effects of the present invention are not limited to the effects mentioned above. Other effects of the present invention not mentioned here can be clearly understood by those with ordinary knowledge in the technical field to which the present invention belongs from the following description.

Brief Description of the Drawings

[0020]

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Embodiments for Carrying Out the Invention

[0021] The terms used in this specification will be briefly explained, and the present invention will be specifically described.

[0022] The terms used in this specification are chosen to be as general as currently widely used, taking into account the functions in the present invention, but this may change depending on the intentions of those skilled in the art, case law, the emergence of new technologies, etc. Therefore, the terms used in the present invention are defined based not only on the names of the terms but also on the meanings they have and the overall content of the present invention.

[0023] Throughout the specification, when a certain part describes a component as "including", unless otherwise specified, this does not exclude other components and means that other components may further be included.

[0024] Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those with ordinary knowledge in the technical field to which the present invention pertains can easily implement them. However, the present invention can be realized in various different forms and is not limited to the embodiments described herein.

[0025] Specific matters including the problems to be solved by the present invention, the means for solving the problems, and the effects of the invention are included in the following embodiments and drawings. The advantages, features, and methods for achieving them of the present invention will become clear by referring to the embodiments described in detail hereinafter together with the accompanying drawings.

[0026] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

[0027] Referring to FIGS. 4 to 11, a method for manufacturing a cooling neckband according to an embodiment of the present invention includes a first crimping step (S100) of crimping at least two laminated raw materials by a mold part to form a first molded article 20, a cutting step (S200) of cutting an end portion of the first molded article 20 by a cutting part after the first crimping step (S100), a mounting step (S300) of mounting an injection port 50 to an end portion of the first molded article 20 by a mounting part after the cutting step (S200), a conversion step (S400) of converting the inner peripheral surface of the first molded article 20 to the outer peripheral surface by turning it inside out by a suction part after the mounting step (S300), a filling step (S500) of inserting a filling material into the first molded article 20 by a filling part after the conversion step (S400), a cutting step (S600) of cutting the injection port 50 by the cutting part after the filling step (S500), and a second crimping step (S700) of crimping the first molded article 20 by the mold part to form a second molded article after the cutting step (S600).

[0028] First, in order to manufacture the cooling neckband of the present invention, the first crimping step (S100) is performed. The first crimping step (S100) is a process of laminating raw materials on the mold part and then crimping them to form the first molded article 20 in a state where the inside is closed. More specifically, at least two of the raw materials are laminated, and the two raw materials are simultaneously crimped by high frequency to form the first molded article 20. At this time, the raw material may be a thermoplastic polyurethane (TPU) resin. Also, the area of the raw material laminated on the upper side may be larger than the area of the raw material laminated on the lower side.

[0029] On the other hand, the mold part crimps the two raw materials by high frequency to form the first molded article 20. More specifically, the mold part includes a first mold 201 for manufacturing the first molded article 20 by press crimping and a second mold 202 for manufacturing a second molded article 60, which will be described later, by press crimping.

[0030] Referring to FIG. 5, the first mold 201 includes a plurality of cell portions 210 in which empty spaces are formed, a plurality of support portions 220 provided between adjacent cell portions 210, and a plurality of recesses 230 provided at the central portions of the support portions 220.

[0031] As an example, the first mold 201 has a rectangular parallelepiped shape, and the plurality of cell portions 210, support portions 220, and recesses 230 are formed on the upper surface. At this time, the cell portions 210 are formed in a concave groove shape from the outer peripheral surface of the first mold 201 so as to have a rectangular parallelepiped-shaped empty space with a rounded outer peripheral surface, and the plurality of cell portions 210 can be arranged in a row along the longitudinal direction of the first mold 201. Also, the plurality of cell portions 210 are formed at regular intervals from each other, and the support portions 220 are respectively provided between adjacent cell portions 210. The support portions 220 can be formed to have a height corresponding to the outer peripheral surface of the first mold 201. Further, at the central portion of each of the support portions 220, the recesses 230 provided in a "U"-shaped concave groove shape are formed. Thereby, a space portion 30 described later is formed by the cell portions 210, and a connecting portion 40 described later is formed by the recesses 230. At this time, it may further include a convex portion detachably provided in the recess 230. That is, the convex portion is coupled to be inserted into the recess 230, and when the convex portion is coupled to the recess 230, it can become a second mold 202 described later.

[0032] Here, high-frequency crimping means a process of adhesion by high-frequency heat generated by passing a current of a high frequency of about 450 kHz through the object to be welded, and the mold part includes a high-frequency press crimping device. That is, it is to press and crimp the two raw materials in a state where the two raw materials are laminated on the first mold 201. Here, the press corresponding to the upper mold is formed in a flat plate shape, and the edge portion of the first molded article 20 is interfered with the support portion 220 so that the portion is crimped and joined. The high-frequency press crimping device may be in any form as long as it can manufacture the first molded article 20 in a form where the inside is closed by high-frequency crimping the two raw materials.

[0033] More specifically, the first molded article 20 includes a plurality of space portions 30 in which empty spaces are formed inside the first molded article 20, and a connecting portion 40 that communicates with the space portions 30 adjacent to the space portion 30. That is, when the first crimping step (S100) is performed in a state where two raw materials are laminated on the first mold 201, the space portion 30 is formed in a portion corresponding to the cell portion 210, and the connecting portion 40 is formed in a portion corresponding to the recessed portion 230, and the remaining portions are joined by high-frequency crimping.

[0034] Next, referring to FIGS. 6 and 7, after the first crimping step (S100), a cutting step (S200) of cutting open an end portion of the first molded article 20 is performed. For example, when cutting open an end portion of the first molded article 20, one side of the connecting portion 40 formed on the end portion side of the first molded article 20 is simultaneously cut open, and subsequently, the injection port 50 is attached to the cut-open connecting portion 40. At this time, the cutting portion may be any form as long as it is a normal cutting device that can cut open the end portion of the first molded article 20 and can cut the injection port 50 described later.

[0035] Next, referring to FIG. 8, after the cutting step (S200), an attachment step (S300) of attaching the injection port 50 to the cut portion of the first molded article 20 is performed. As an example, the injection port 50 can be formed in a flexible tubular shape so as to be able to convey air and filling material. Here, the injection port 50 has a cylindrical shape with a hollow, and the hollow of the injection port 50 communicates with the inner peripheral surface of the first molded article 20. That is, the end portion of the first molded article 20 is cut open by the cutting portion, and the injection port 50 is attached to and communicates with the cut end portion of the first molded article 20 by the attachment portion. Further, the suction portion includes a pump P, and the injection port 50 is connected to the pump P so that the inside of the first molded article 20 communicates with the pump P through the injection port 50. At this time, the attachment portion is an ordinary adhesive device, and it may be in any form as long as the injection port 50 can be attached to and fixed to the connection portion 40, and the pump P may be an air pump.

[0036] Next, referring to FIG. 9, after the attachment step (S300), a conversion step (S400) of turning the first molded article inside out by the suction portion is performed. More specifically, the suction portion is configured to suck the air inside the first molded article 20 in a state of being coupled to the injection port 50, so that the inner peripheral surface of the first molded article 20 is turned inside out to the outside. Therefore, the inner peripheral surface of the first molded article 20 is turned inside out to the outside in a form passing through the injection port 50, and the seam 21 formed in the high-frequency crimping portion is disposed inside the first molded article 20.

[0037] That is, the inner peripheral surface of the first molded article 20 is turned inside out to the outside in a form passing through the injection port 50, and the seam formed in the high-frequency crimping portion is disposed inside the first molded article 20. In the case of a conventional neck band manufactured without performing the conversion step (S600), there is a problem that the seam portion protrudes and irritates the skin during wearing, so that the wearing feeling (comfort) is significantly reduced.

[0038] On the other hand, in the case of the cooling neckband produced by the neckband manufacturing method of the present invention, since the joint 21 is disposed inside, the outer peripheral surface is smoothly formed, so there is an advantage that the wearing feeling is improved. In other words, the inner peripheral surface of the first molded article 20 is turned inside out in a form passing through the injection port 50, and the joint 21 formed at the high-frequency crimping portion is disposed inside without being exposed to the outside. As a result, the outer peripheral surface of the cooling neckband that contacts the body is smooth without unevenness and without the joint 21, and there is an effect that the wearing feeling is improved.

[0039] Next, after the conversion step (S400), the filling step (S500) of filling the first molded article 20 with the filling material is performed by inserting the filling material with the filling portion inserted into the injection port 50. At this time, the filling portion may include a storage tank in which the filling material is stored, a connecting pipe that connects the storage tank and the injection port 50 so that the filling material can be conveyed from the storage tank, and a driving pump that provides a driving force for conveying the filling material. Any form may be used as long as the filling material can be filled into the first molded article 20.

[0040] Next, after the filling step (S500), the cutting step (S600) of cutting the injection port 50 and detaching it from the first molded article 20 is performed. That is, the injection port 50 is cut by the cutting portion after the filling material is filled into the first molded article 20, and is high-frequency crimped by a second mold 202 described later. Here, in order to minimize the area of the joint formed by the crimping of the injection port 50 portion, it is preferable to minimize the diameter of the injection port 50.

[0041] Next, after the cutting step (S600), a second crimping step (S700) is performed in which the first molded article 20 with the injection port 50 cut is crimped by the second mold 202 to form the second molded article 60. At this time, by the second mold 202, the remaining uncut injection port 50 portion and the plurality of connecting portion 40 portions of the first molded article 20 are crimped. That is, unlike the first molded article 20, the second molded article 60 is in a state where the connecting portion 40 is not formed and the injection port 50 is not formed.

[0042] Referring to FIGS. 10 and 11, the second mold 202 includes a plurality of cell portions 210 in which empty spaces are formed, and a plurality of support portions provided between the cell portions 210 adjacent to the cell portions 210. That is, unlike the first mold 201, since the plurality of recesses 230 are not formed in the second mold 202, the connecting portion 40 is crimped when the first molded article 20 is crimped, so that the plurality of space portions 30 have independent spaces. In other words, in the first molded article 20, the plurality of space portions 30 are in a state of being communicated by the plurality of connecting portions 40, and in the second molded article 60, the plurality of space portions 30 are not communicated. Therefore, there is an advantage that heat transfer between the fillers filled in the plurality of space portions 30 of the second molded article 60 can be minimized. Also, the seam formed by crimping between the space portions 30 can be prevented from touching the skin of the wearer. As an example, the separation distance between the space portions 30 adjacent to each other may be 0.1 to 0.3 times the width of the space portion 30. That is, it is preferable to increase the volume of the space portion 30 by the filler filled in the space portion 30, minimize the distance between the space portions 30, and minimize the length of the seam generated when the connecting portion 40 is crimped.

[0043] On the one hand, the neckband produced by the manufacturing method of the cooling neckband of the present invention has a plurality of space portions 30 for accommodating a cooling medium formed inside the outer skin. The material of the outer skin may be a thermoplastic polyurethane (TPU) resin, which is a material harmless to the human body. The cooling medium filled in the space portion 30 is a phase change material (PCM), and its type will be described in detail below.

[0044] As the phase change material (PCM), the cooling medium may be selected from any one or more of heptadecane, octadecane, and nonadecane, may be eicosane or heneicosane, or may be used by mixing them.

[0045] For reference, the phase change material (PCM) used in the present invention is a material having the property of regulating temperature, that is, accumulating a large amount of thermal energy by absorbing and releasing heat, or releasing the accumulated thermal energy. In order to cool the neckband to which the phase change material (PCM) is applied, it can be placed in the freezer of the refrigerator for about 10 minutes, immersed in cold tap water for about 30 minutes, or placed under the air conditioner for about 30 minutes. Then, the phase change material (PCM) accommodated in the neckband is cooled to a solid state below the melting point temperature as shown in Table 1 below.

[0046] When the neckband with the phase change material (PCM) cooled to a solid state is put on the neck, when the melting point of the phase change material (PCM) becomes above the melting point temperature as shown in Table 1 below due to the hot summer temperature together with the human body temperature, the solid phase change material (PCM) melts and feels cool. The space portion 30 has a structure sealed by high-frequency adhesion, and as described above, the phase change material (PCM) can be repeatedly reused while repeating freezing and melting due to temperature changes.

[0047] For reference, the melting point temperature of the phase change material (PCM) used in the present invention is as shown in Table 1 below.

[0048]

Table 1

[0049] Further, the manufacturing method of the cooling neckband of the present invention further includes a cleaning step (S800) of coating and cleaning the outer peripheral surface of the manufactured second molded article after the second crimping step (S700), and a drying step (S900) of drying the second molded article after the cleaning step (S800). That is, after coating and cleaning the outer peripheral surface of the second molded article, it is dried to manufacture the cooling neckband which is the final product.

[0050] As a result, the cooling neckband produced by the manufacturing method of the cooling neckband of the present invention can cool the body when worn, absorb the heat of the body, and keep the body cool at a constant temperature. Instead of exposing the seam 21 formed in the high-frequency press crimping portion to the outside, it is located inside, so that the outer peripheral surface of the cooling neckband in contact with the body is smooth without unevenness and without the seam 21, and there is an advantage that the wearing feeling is improved.

[0051] Thus, those skilled in the art to which the present invention pertains can understand that the above-described technical configuration of the present invention can be implemented in other specific forms without changing the technical idea and essential features of the present invention.

[0052] Therefore, the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims described later rather than the above detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention.

Explanation of Reference Numerals

[0053] 20 First molded article 21 joints 30 space part 40 connecting part 50 injection port 60 second molded article 201 first mold 202 second mold 210 cell part 220 support part 230 concave part P pump S100 first crimping step S200 cutting step S300 adhesion step S400 conversion step S500 filling step S600 cutting step S700 second crimping step S800 cleaning step S900 drying step

Claims

1. A first pressing step of pressing at least two stacked raw materials by a mold part to form a first molded product; a cutting step of cutting an end portion of the first molded object by a cutting section after the first pressing step; After the cutting step, a mounting step of mounting an injection port to an end portion of the first molding by a mounting portion; a conversion step in which the inner circumferential surface of the first molded object is turned outwardly to become an outer circumferential surface by a suction unit after the mounting step; Including, When the suction portion is inserted into the injection port and sucks in air from within the first molded product, the inner circumferential surface of the first molded product is turned inside outward. A method for manufacturing a cooling neckband, comprising:

2. After the converting step, a filling step of inserting a filler into the inside of the first molding by a filling part; a cutting step in which the injection port is cut by the cutting unit after the filling step; After the cutting step, a second pressing step is performed in which the first molded product is pressed by a second mold part to form a second molded product; Further comprising: The filling material is filled into the first molding in a state where the filling portion is inserted into the injection port. A method for manufacturing the cooling neckband according to claim 1.

3. The mold part forms the first molded product by high-frequency compression bonding the two raw materials. A method for manufacturing the cooling neckband according to claim 1.

4. The inner circumferential surface of the first molded article is turned outward in a manner passing through the injection port, so that a seam formed in the high frequency bonding portion is positioned inside the first molded article. A method for manufacturing the cooling neckband according to claim 3.

5. The first molded product is A plurality of spaces in which empty spaces are formed inside the first molded product; A connecting portion that connects the space portion to an adjacent space portion. A method for manufacturing the cooling neckband according to claim 1.

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