Manufacturing method of cooling neck band

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, and more specifically, to a method for manufacturing a cooling neckband that can improve the wearing comfort by making the outer peripheral surface of the manufactured neckband smoother when manufactured by press molding. [Background technology]

[0002] In recent years, various adverse effects on the natural environment and human society have been reported in conjunction with the rapid progress of global warming. In particular, the increase in extremely hot days due to rising summer temperatures not only makes it difficult to lead a normal social life, but also makes people more susceptible to heat stroke when doing physical labor or sports outdoors because their body temperature rises rapidly.

[0003] In particular, during the hot summer months, the area around the neck becomes hot, and when playing sports for a long time, body temperature rises and sweat flows around the neck. To cool the neck, one method is to wet a towel or handkerchief with water and wrap it around the neck. However, when using a wet towel or handkerchief, the water evaporates quickly due to the hot summer sun and body heat, so the cooling effect cannot be sustained.

[0004] As a solution to these problems, various cooling neckbands have been developed and patent applications have been filed in recent years. These are designed to be worn around the neck on a hot day to cool down, slowly melting as they absorb the heat from the human body and maintain a constant temperature.

[0005] Patent Document 1 proposes a wearable cooling tube in which, as shown in FIG. 1, the cooling tube 1 includes a tube body 10 and a cover portion 20, a polymer film layer that contains a cooling medium and is formed into at least a curved shape, and a fiber layer that encases the polymer film layer and contains moisture, and the fiber layer is cooled by evaporation of the moisture.

[0006] Furthermore, Patent Document 2 proposes a neck ice cooling package in which, as shown in FIG. 2, a tube extending in the longitudinal direction is formed by extrusion molding, and then formed into a convex shape by vacuum thermoforming, i.e., a contact portion 12 that comes into contact with the neck portion and an air flow portion 13 arranged therebetween are repeated, and both ends 11 in the longitudinal direction are finished by high frequency processing.

[0007] In addition, Patent Document 3 proposes a temperature-adjustable neck cooling tube having 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 so that both ends 11 in the longitudinal direction face each other so that the tube can be worn around the neck, as shown in FIG.

[0008] However, conventional neckbands have problems in that their outer peripheral surface is not smooth due to the formation of protrusions, etc., which makes them aesthetically unpleasing and uncomfortable to wear. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Publication No. 10-2021-0001833 (Published on January 6, 2021) Wearable cooling tube and manufacturing method thereof [Patent Document 2] Korean Patent Registration No. 10-1977325 (Announced on May 13, 2019) Neck Ice Cooling Package [Patent Document 3] Korean Patent Registration No. 10-1948865 (published on February 18, 2019) Temperature-adjustable neck cooling tube Summary of the Invention [Problem 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 has an object to provide a method for manufacturing a cooling neckband that can give the outer peripheral surface a smoother shape, thereby improving the wearing comfort.

[0011] The problems that the present invention aims to solve are not limited to those mentioned above, and other problems that the present invention aims to solve that are not mentioned here will be clearly understood by those having ordinary skill in the art to which the present invention pertains from the following description. [Means for solving the problem]

[0012] In a preferred embodiment of the present invention, a method for manufacturing a cooling neckband includes a first crimping step of forming a first molded product by crimping at least two stacked raw materials using a mold section, a cutting step of cutting an end of the first molded product using a cutting section after the first crimping step, an attachment step of attaching an injection port to the end of the first molded product using an attachment section after the cutting step, and a conversion step of converting an inner surface of the first molded product by an suction section so that the inner surface of the first molded product is turned outward to become the outer surface, wherein the suction section is inserted into the injection port and sucks in air from within the first molded product, thereby turning the inner surface of the first molded product outward.

[0013] In addition, according to a preferred embodiment of the present invention, the method further includes a filling step of inserting a filler into the inside of the first molding by a filling unit after the converting step, a cutting step of cutting the injection port by the cutting unit after the filling step, and a second crimping step of crimping the first molding by the mold unit to form a second molding after the cutting step, characterized in that the filler is filled into the inside of the first molding with the filling unit 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 compressed to form the first molded product.

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

[0016] Furthermore, according to a preferred embodiment of the present invention, the first molding is characterized in including a plurality of space portions in which empty space is formed inside the first molding, and a connecting portion connecting the space portions with adjacent space portions. Effect of the Invention

[0017] By solving the above problem, the manufacturing method for a cooling neckband of the present invention has the effect of providing a manufacturing method for a cooling neckband in which the inner surface of the first molded product is turned inside out as it passes through the injection port, and the seam formed in the high-frequency compression bonded portion is located on the inside without being exposed to the outside, thereby providing a cooling neckband with a smooth outer surface when worn, thereby improving the wearing comfort.

[0018] More specifically, in the case of a conventional neckband with an edge around the outer circumference, the edge is formed thicker, which causes friction, which can damage the skin and reduce thermal efficiency, whereas the cooling neckband of the present invention has the advantage that heat flows freely and transfers heat from the skin to the inside of the neckband more efficiently because there is no edge, and the cooling material is more closely attached to the wearer's skin and can absorb heat from the skin more quickly. In addition, by manufacturing the neckband inside out after molding by injecting air, the convection phenomenon can be minimized so that the connecting passage can circulate constantly, thereby improving the cooling retention time, and the thermal energy efficiency, surface flexibility, and wearing comfort can be improved. In addition, in the case of a conventional neckband with an edge, the thermal energy generated at the part in contact with the skin is resisted by the edge, so that the thermal energy remains at the edge and inhibits the circulation of the cooling energy, whereas in the case of the cooling neckband of the present invention, the thermal energy generated at the part in contact with the skin circulates without being affected by the edge and moves in the direction of the thermal energy, pushing aside the cooling energy on the back surface, so that the instantaneous cooling effect is high and lasts for a long time.

[0019] The effects of the present invention are not limited to those mentioned above, and other effects of the present invention not mentioned here will be clearly understood by those having ordinary skill in the art to which the present invention pertains from the following description. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view of a prior art cooling neckband. [Diagram 2] FIG. 1 is a perspective view of a prior art cooling neckband. [Diagram 3] FIG. 1 is a perspective view of a prior art cooling neckband. [Figure 4] 4 is a flow chart illustrating a method for manufacturing a cooling neckband according to an embodiment of the present invention. [Diagram 5]1 is a perspective view showing a first mold in a manufacturing method for a cooling neckband according to an embodiment of the present invention. FIG. [Figure 6] 1 is a perspective view showing a first molded product produced by a first mold in a method for producing a cooling neckband according to an embodiment of the present invention. FIG. [Figure 7] 1 is a perspective view showing a state in which an end portion of a first molded product produced by a first mold is cut open in a manufacturing method for a cooling neckband according to an embodiment of the present invention. FIG. [Figure 8] 11 is a diagram showing an injection port being joined to an incision in a first molded product produced by a first mold in a manufacturing method for a cooling neckband according to one embodiment of the present invention. FIG. [Figure 9] 1A and 1B are diagrams showing how a first molded product is turned inside out in a manufacturing method for a cooling neckband according to one embodiment of the present invention, where (a) is a diagram showing how an injection port is connected after the first molded product is manufactured, (b) is a diagram showing how the first molded product is gradually turned inside out, and (c) is a diagram showing how the first molded product is completely turned inside out so that the seam is located on the inside. [Figure 10] 10 is a perspective view showing a second mold in a manufacturing method for a cooling neckband according to an embodiment of the present invention. FIG. [Figure 11] 11 is a perspective view showing a second molded product produced by a second mold in a method for producing a cooling neckband according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0022] The terms used in this specification are selected as far as possible from common terms currently in wide use while taking into consideration the functions in the present invention, but these may change depending on the intentions of engineers engaged in this field, precedents, the emergence of new technologies, etc. Therefore, the terms used in this specification are defined based on the meanings that the terms have and the overall content of the present invention, rather than simply the names of the terms.

[0023] Throughout the specification, when a part is described as "comprising" a certain element, this does not mean that it excludes other elements, but that it may further include other elements, unless otherwise specified.

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, in order to enable those skilled in the art to easily carry out the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

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

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

[0027] 4 to 11, the method for manufacturing a cooling neckband according to an embodiment of the present invention includes a first compression step (S100) of compressing at least two stacked raw materials by a mold unit to form a first molded product 20, a cutting step (S200) of cutting an end of the first molded product 20 by a cutting unit after the first compression step (S100), an attachment step (S300) of attaching an injection port 50 to the end of the first molded product 20 by an attachment unit after the cutting step (S200), and a suction step (S300) of attaching an injection port 50 to the end of the first molded product 20 by an attachment unit after the attachment step (S300). the injection port 50 is cut by the cutting unit, and the first molding 20 is compressed by the mold unit to form a second molding.

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

[0029] On the other hand, the mold section high-frequency pressure-bonds the two raw materials to form the first molded product 20. More specifically, the mold section includes a first mold 201 for manufacturing the first molded product 20 by press-bonding, and a second mold 202 for manufacturing a second molded product 60 (described later) by press-bonding.

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

[0031] As an example, the first mold 201 has a rectangular parallelepiped shape, and the plurality of cell units 210, the support unit 220, and the recess 230 are formed on the upper surface. At this time, the cell unit 210 may be formed in a 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 units 210 may be arranged in a line along the longitudinal direction of the first mold 201. In addition, the plurality of cell units 210 may be formed at regular intervals from each other, and the support unit 220 may be provided between each of the cell units 210 and the adjacent cell units 210. The support unit 220 may be formed to have a height corresponding to the outer peripheral surface of the first mold 201. Furthermore, the recess 230 is formed in a "U"-shaped groove shape in the center of each of the support units 220. As a result, the cell unit 210 forms a space unit 30, which will be described later, and the recess 230 forms a connection unit 40, which will be described later. At this time, the mold may further include a protrusion that is detachably provided in the recess 230. That is, the protrusion is coupled to the recess 230 so as to be inserted therein, and when the protrusion is coupled to the recess 230, it can become a second mold 202 described later.

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

[0033] More specifically, the first molding 20 includes a plurality of spaces 30 in which empty spaces are formed inside the first molding 20, and a connecting portion 40 that connects the spaces 30 to adjacent spaces 30. That is, by performing the first compression step (S100) with two raw materials stacked in the first mold 201, the spaces 30 are formed in the portions corresponding to the cell portions 210, the connecting portion 40 is formed in the portions corresponding to the recesses 230, and the remaining portions are joined by high-frequency compression.

[0034] 6 and 7, after the first pressing step (S100), the cutting step (S200) is performed to cut open the end of the first molding 20. For example, when cutting open the end of the first molding 20, one side of the connecting portion 40 formed on the end side of the first molding 20 is simultaneously cut open, and then the injection port 50 is attached to the cut connecting portion 40. At this time, the cutting unit is a normal cutting device, and may be of any type as long as it can cut open the end of the first molding 20 and cut off the injection port 50 described below.

[0035] Next, referring to FIG. 8, after the cutting step (S200), the attachment step (S300) is performed to attach the injection port 50 to the cut portion of the first molding 20. As an example, the injection port 50 may be formed in a flexible tube shape so as to convey air and a filler. Here, the injection port 50 is cylindrical with a hollow, and the hollow of the injection port 50 is made to communicate with the inner circumferential surface of the first molding 20. That is, the end of the first molding 20 is cut by the cutting part, and the injection port 50 is attached to the cut end of the first molding 20 by the attachment part to communicate with it. Furthermore, the suction part includes a pump P, and the injection port 50 is connected to the pump P, so that the inside of the first molding 20 and the pump P are communicated with each other through the injection port 50. In this case, the mounting part is a normal adhesive device, and may be in any form as long as it can attach and fix the injection port 50 to the connecting part 40, and the pump P may be an air pump.

[0036] 9, after the mounting step (S300), the conversion step (S400) is performed in which the first molding is turned inside out by the suction unit. More specifically, the suction unit is configured to suck air from within the first molding 20 while being coupled to the injection port 50, so that the inner circumferential surface of the first molding 20 is turned outward. Thus, the inner circumferential surface of the first molding 20 is turned outward in a form passing through the injection port 50, and the seam 21 formed in the high frequency compression portion is disposed inside the first molding 20.

[0037] That is, the inner circumferential surface of the first molded product 20 is turned outward through the injection port 50, and the seam formed in the high frequency compression bonding portion is disposed inside the first molded product 20. In the case of a conventional neckband manufactured without performing the converting step (S600), the seam protrudes and irritates the skin when worn, resulting in a significant decrease in comfort.

[0038] In contrast, in the case of a cooling neckband produced by the neckband manufacturing method of the present invention, the seam 21 is disposed on the inside, so that the outer peripheral surface is formed smoothly, which has the advantage of improving the wearing comfort. In other words, the inner peripheral surface of the first molded product 20 is turned outward in a form passing through the injection port 50, and the seam 21 formed in the high frequency compression bonded portion is disposed on the inside without being exposed to the outside, so that the outer peripheral surface of the cooling neckband that comes into contact with the body is a smooth outer peripheral surface without unevenness and without seam 21, which has the effect of improving the wearing comfort.

[0039] Next, after the conversion step (S400), the filling step (S500) is performed in which the filling material is inserted into the injection port 50 while the filling unit is inserted, thereby filling the first molding 20 with the filling material. At this time, the filling unit may include a storage tank in which the filling material is stored, a connecting pipe connecting the storage tank and the injection port 50 so that the filling material can be transported from the storage tank, and a driving pump providing a driving force for transporting the filling material, and may have any form as long as the filling material can be filled into the first molding 20.

[0040] Then, after the filling step (S500), the cutting step (S600) is performed in which the injection port 50 is cut and separated from the first molding 20. That is, the injection port 50 is cut by the cutting unit after the filler is filled into the first molding 20, and is high-frequency pressure-bonded by a second mold 202 described below. Here, in order to minimize the area of ​​a seam formed by pressure bonding at the injection port 50 portion, it is preferable to minimize the diameter of the injection port 50.

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

[0042] 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 and the adjacent cell portions 210. That is, unlike the first mold 201, the second mold 202 does not have the plurality of recesses 230 formed therein, and therefore, when the first molded product 20 is crimped, the connecting portion 40 is crimped, and the plurality of spaces 30 have independent spaces. In other words, the first molded product 20 is in a state in which the plurality of spaces 30 are communicated by the connecting portions 40, and the second molded product 60 is in a state in which the plurality of spaces 30 are not communicated. Therefore, there is an advantage that the heat transfer between the fillings filled in the plurality of spaces 30 of the second molded product 60 can be minimized. In addition, the seams formed by crimping the spaces 30 to each other can be prevented from coming into contact with the wearer's skin. As an example, the distance between the adjacent spaces 30 may be 0.1 to 0.3 times the width of the spaces 30. That is, it is preferable that the volume of the spaces 30 is increased by the filling material filled in the spaces 30, and the distance between the spaces 30 is minimized to minimize the length of the seam generated when the connecting portion 40 is compressed.

[0043] On the other hand, the neckband produced by the method for producing a neckband for cooling according to the present invention has a plurality of spaces 30 for accommodating a cooling medium formed inside the outer cover. The outer cover may be made of thermoplastic polyurethane (TPU) resin, which is harmless to the human body. The cooling medium filled in the spaces 30 is a phase change material (PCM), the type of which will be described in detail below.

[0044] The cooling medium may be a phase change material (PCM) selected from one or more of heptadecane, octadecane, and nonadecane, or may be eicosane or heneicosane, or a mixture of these.

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

[0046] When the neckband in which the PCM has been cooled to a solid state is worn around the neck, the solid PCM melts and the wearer feels cool if the melting point of the PCM is higher than the melting point temperature as shown in Table 1 below due to hot summer temperatures together with the human body temperature. The space 30 is sealed by high frequency bonding, and as the PCM freezes and melts repeatedly due to temperature changes as described above, it can be reused repeatedly.

[0047] For reference, the melting points of the phase change materials (PCMs) used in the present invention are as shown in Table 1 below.

[0048] [Table 1]

[0049] In addition, the method for manufacturing a cooling neckband of the present invention further includes a cleaning step (S800) of coating and cleaning the outer circumferential surface of the manufactured second molded product after the second pressing step (S700), and a drying step (S900) of drying the second molded product after the cleaning step (S800). That is, the outer circumferential surface of the second molded product is coated and cleaned, and then 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 cools the body when worn, absorbing body heat and keeping the body cool at a constant temperature. By positioning the seam 21 formed in the high-frequency press-bonded portion on the inside rather than exposed to the outside, the outer peripheral surface of the cooling neckband that comes into contact with the body is smooth and free of bumps and seams 21, which has the advantage of improving the wearing comfort.

[0051] In this manner, it will be understood by those skilled in the art in the technical field to which the present invention pertains that the technical configuration of the present invention described above can be embodied in other specific forms without changing the technical concept or essential features of the present invention.

[0052] Therefore, the embodiments described above are illustrative in all respects and not limiting, and the scope of the present invention is indicated by the claims set forth below rather than by the above detailed description, and all modifications and variations derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. [Explanation of symbols]

[0053] 20 First Molded Product 21 Seams 30 Space section 40 Connection part 50 inlet 60 Second Molding 201 First Mold 202 Second Mold 210 Cell Division 220 Support part 230 Recess P-Pump S100 First crimping step S200 incision step S300 Adhesion Step S400 conversion step S500 Filling Step S600 Cutting Step S700 Second Crimping Step S800 Wash 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; a second crimping step in which the first molded product is crimped by the mold part to form a second molded product after the cutting step; 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 compression bonded 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.

Images