JP5236220B2 - String with soft cell chip and manufacturing method thereof - Google Patents

Description

  The present invention relates to a string such as a string for clothing and a shoelace, and particularly relates to a string having an end portion subjected to cell chip processing.

Conventionally, it has been known that cell tip processing is applied to an end portion of a shoelace or the like on which a film of a cellulose acetate-based material is wound and fixed (see Patent Document 1 and Patent Document 2).
In the conventional cell chip processing, the film wound around the end of the string is a cellulose acetate-based material as described above, a film made of a thermoplastic material such as polyolefin, polystyrene, polyvinyl chloride, or a metal cell chip. Was sometimes used.
Japanese Patent No. 3525089 Utility Model Registration No. 3064237

Cell chip processing at the end of the conventional string is made by winding the resin film around the end of the string as described above, so the cell chip made of film layer is hard and the cell chip is used when used as a string for clothing. However, when touching the human skin, there is a problem that the stimulation is strong and the feeling of use is bad.
In addition, the cell chip has a problem that it breaks due to an external pressure due to a change with time and is chipped or detached from the end of the string.

In the case of a metal cell chip, breakage or the like due to external pressure does not occur, but the metal cell chip is harder than a resin film, and the problem of strong irritation to the human skin during use has not been solved.
Therefore, the silicone resin is molded into a cell chip shape in advance, and the cell chip made of silicone resin is attached to the end of the string. Is inserted, and the expansion of the hole is released to attach a cell tip made of silicone resin to the end of the string.) Such a silicone resin cell chip is attached to the end of the cord. There is a problem that it takes time and effort. Further, since the end of the string is only inserted into the cell chip made of silicone resin, there is a drawback that the cell chip is often detached.

The present invention has been made based on such a background, and a main object thereof is to provide a string in which a soft cell chip having elasticity is fixed to an end portion of the string.
Another object of the present invention is to provide a method for manufacturing a string to which an elastic soft cell chip is attached.

The invention described in claim 1 is a string having an elastic soft cell chip at an end, and a liquid or gel-like silicone resin material is applied to a predetermined portion to be an end of the string, and the predetermined by heating and pressurizing the site and silicone resin material contained in the mold, the silicone resin material is a cylindrical outer shape according to the forming die is secured to a predetermined portion so as to cover the area around the predetermined portion the thermally cured, characterized in that it is a soft cell chip with no irritation to the human body is resilient, a cord suitable for clothing.

The invention according to claim 2 is characterized in that the predetermined portion and the soft cell chip are cut at a substantially central portion in the length direction thereof, and the predetermined portions cut into two are respectively ends of the strings. The cord is suitable for clothing according to claim 1.
The invention described in claim 3 includes (1) a step of preparing a string to be processed, (2) a step of setting a predetermined portion to be an end of the string in an open mold, and the mold has a length. A molding die having a semicircular receiving recess whose cross section perpendicular to the direction is open at the top, and the molding die is composed of a pair of molds. (3) A liquid silicone resin material is placed in the molding die . A step of pouring, (4) a step of closing and heating the mold, and (5) a step of opening the mold and taking out the string after heating for a predetermined time. It is a manufacturing method.

According to a fourth aspect of the present invention, in the manufacturing method according to the third aspect, in place of the steps (2) and (3), (2) ′ a predetermined portion to be an end of the string is formed into a gel-like silicone. A method of manufacturing a string with a soft cell chip, comprising: a step of covering with a resin; and (3) ′ a step of setting a predetermined portion covered with the gel-like resin in an open mold.
According to a fifth aspect of the present invention, the manufacturing method further includes the step (5),
(6) The method for producing a string with a soft cell chip according to claim 3 or 4, comprising a step of cutting a predetermined portion of the string taken out by opening the forming die at the center in the length direction. is there.

  The invention according to claim 6 is characterized in that the mold has a long concave portion for accommodating a predetermined portion of the string, and has a bank portion in which the inner surface of the concave portion swells at a central portion in the longitudinal direction of the concave portion. It is a manufacturing method of the string with a soft cell chip | tip of Claim 5.

According to the first aspect of the present invention, since the soft cell chip having elasticity is fixed to the predetermined portion to be the end portion of the string so as to cover the periphery of the predetermined portion, the soft cell chip is attached to the human body. On the other hand, it is possible to make a string having a soft cell chip that has no stimulus, can withstand external pressure, and has a stable shape. Such a string is particularly suitable for clothing.
According to the second aspect of the present invention, by cutting the central portion in the length direction of the predetermined portion, the soft cell chip is fixed to the both end portions, the both end portions are not easily frayed, and the end portions are not attached to the human body. A string without stimulation can be provided.

According to the invention described in claim 3, a method for producing a string provided with a soft cell chip having elasticity by using a liquid resin material, that is, a resin material having fluidity, and subjecting the resin material to a thermosetting reaction. Can be provided.
According to invention of Claim 4, it can replace with a liquid resin material and can provide the manufacturing method of the string which has an elastic soft cell chip | tip using a gel-like resin material.

According to the invention of claim 5, the resin material is applied to the predetermined portion to be the end portion of the cord and is thermally cured, and the predetermined portion is cut, thereby simultaneously elastic to both ends of the cord. A manufacturing method in which a certain soft cell chip is provided can be provided.
According to the sixth aspect of the present invention, when the string is a flat string, for example, the bank portion of the mold functions to round the flat string, and therefore, it is possible to provide a manufacturing method for easily fixing the soft cell chip to the flat string. it can.

The resin material used in this invention is preferably a silicone resin. Since this resin has a molecular weight adjusted and is commercially available as a liquid or gel-like resin material, it can be easily obtained. Since these resin materials are heated to cause a thermosetting reaction and have a certain shape with elasticity, they can be used as the soft cell chip according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a pant 1 as an example of clothing in which a string according to an embodiment of the present invention is used. A cord according to an embodiment of the present invention is used as the waist cord 2 of the pants 1.
As shown in the enlarged view A surrounded by a circle, the end portion 3 of the waist cord 2 is an end portion subjected to cell chip processing. Here, an elastic cell chip 20 made of silicone resin (in this specification, this elastic cell chip is referred to as a “soft cell chip”) is fixed to the end 3 processed with the cell chip. Yes.

2A to 2E are illustrative views showing a string manufacturing method according to an embodiment of the present invention, that is, a soft cell chip processing step according to an embodiment of the present invention.
In FIG. 2A, 11 is a string to be processed, and the string 11 includes a predetermined portion 12 to be an end. The predetermined part 12 may be a part that should become one end and the other end of one string 11 by being cut later, or a part that should become one end or the other end of two strings, Also good.

  13A is a plan view of one of a pair of molding dies as a molding die. The molding die 13 </ b> A is provided with a combination surface 14 and an accommodation recess 15 formed on the combination surface 14. The accommodation recess 15 is a recess that accommodates the predetermined portion 12 of the string 11, and is an elongated groove-like recess that is elongated in the length direction of the predetermined portion 12. At both ends of the housing recess 15, the width is narrowed to form a throttle port 16.

  2B is a plan view of the state in which the string 11 is set on the molding die 13A, and FIG. 2B is a longitudinal sectional view thereof. When the string 11 is set in the molding die 13A, the string 11 is squeezed so that the diameters at both ends of the predetermined portion 12 are reduced by the throttle ports 16 at both ends of the housing recess 15. In this state, as shown in FIG. 2C, the liquid silicone resin 18 is poured into the predetermined portion 12 of the string 11 set in the molding die 13A by, for example, an injector 17. The poured liquid silicone resin 18 is filled in the accommodating recess 15 and adheres around the predetermined portion 12 of the string 11.

  Thereafter, as shown in FIG. 2D, the molding dies 13A and 13B are closed so that the other 13B of the pair of molding dies is combined with 13A. By closing the molding dies 13A and 13B, pressure is applied to the predetermined portion 12 of the string 11 and the liquid silicone resin 18, and a part of the silicone resin 18 penetrates into the predetermined portion 12 of the string 11. Then, the molding dies 13A and 13B are heated. The heating time can be exemplified by about 30 seconds, for example.

The housing recesses 15 of the molding dies 13A and 13B are both squeezed by the throttle port 16, and if the amount of the liquid silicone resin poured by the injector 17 is adjusted to an appropriate amount, the liquid silicone resin in the housing recess 15 There is no leakage to the outside through the throttle port 16, and there is no gap that is not filled with the liquid silicone resin 18 in the housing recess 15.
As shown in FIG. 2D, the liquid silicone resin 18 and the predetermined portion 12 of the string 11 are pressurized and heated, and then the molding dies 13A and 13B are opened. As shown in FIG. An elastic silicone resin cured into a fixed shape around the predetermined portion 12 by a thermosetting reaction, that is, a string to which the soft cell chip 20 is fixed can be obtained.

And the string end part which has the soft cell chip | tip 20 is obtained by cut | disconnecting the length direction center part of the predetermined part 12 of this string | stump 11 with the hardened silicone resin (soft cell chip | tip).
FIG. 3 is a perspective view showing a more specific configuration of a molding die 13A used for manufacturing the above-described string with a soft cell chip. The molding die 13 </ b> A has an accommodation recess 15. The housing recess 15 has a semicircular shape with its upper side opened in a direction orthogonal to the length direction, and has a diameter of about 4.0 mm to 5.0 mm. The diameter of the accommodating recess 15 is appropriately selected depending on the thickness of the string set in the accommodating recess 51 and the type of string (round string, flat string, etc.).

At both ends in the length direction of the housing recess 15, throttle ports 16 are formed. The throttle port 16 is also semicircular in cross section, and its diameter is about 60% of the diameter of the housing recess 15.
Further, the accommodating recess 15 is provided with a bank portion 19 at the center in the length direction. The bank portion 19 is a convex portion in which the inner surface of the housing recess portion 15 swells, and the diameter of the semicircular region defined by the bank portion 19 is larger than that of the throttle port 16. When the predetermined portion of the string is set in the receiving recess 15, the bank portion 19 holds the predetermined portion of the string at the center in the space of the receiving recess 15, and the silicone resin is uniformly applied around the predetermined portion of the string. It functions as follows. The bank portion 19 also functions as a guide for rounding the flat string when the string to be set in the receiving recess 15 is a flat string, and functions to facilitate setting of the flat string in the receiving recess 15.

In this embodiment, the combination surfaces 14 located on both sides of the housing recess 15 are surfaces that are slightly depressed from the upper surface. By recessing the combination surface 14, it is possible to secure a receiving portion in the case where silicone resin that does not fit in the housing recess 15 overflows.
The other of the pair of molding dies has a symmetrical shape with the molding die 13A shown in FIG.
4A to 4E are illustrative views showing a string manufacturing method according to another embodiment of the present invention, that is, a process of soft cell chip processing according to another embodiment of the present invention.

In FIG. 4A, 31 is a string to be processed, and the string 31 includes a predetermined portion 32 to be an end. The predetermined portion 32 is an actual end portion of the string 31.
33A is a plan view of one of a pair of molding dies as a molding die. The molding die 33 </ b> A is provided with a combination surface 34 and an accommodation recess 35 formed on the combination surface 34. The accommodation recess 35 is a recess that accommodates a predetermined portion (end portion) 32 of the string 31 and is an elongated groove-like recess. A narrowing opening 36 having a narrow width is formed at the end of the housing recess 35.

  4B is a plan view of a state in which the predetermined portion 32 of the string 31 is set on the molding die 33A, and FIG. 4B is a longitudinal sectional view thereof. The string 31 is set in a state in which the end of the predetermined portion 32 leaves a little space in the receiving recess 35. When the string 31 is set in the housing recess 35, the string 31 is squeezed by the throttle port 36 provided in the housing recess 35 so that the boundary portion of the predetermined portion 32 is contracted.

In this state, as shown in FIG. 4C, the liquid silicone resin 18 is poured into the predetermined portion 32 of the string 31 set in the molding die 33A by, for example, the injector 17. The poured liquid silicone resin 18 is filled in the accommodation recess 35 and adheres around the predetermined portion 32 of the string 31.
Thereafter, as shown in FIG. 4D, the molding dies 33A and 33B are closed so that the other 33B of the pair of molding dies is combined with 33A. By closing the molding dies 33 </ b> A and 33 </ b> B, pressure is applied to the predetermined portion 32 of the string 31 and the liquid silicone resin 18, and part of the silicone resin 18 penetrates into the predetermined portion 32 of the string 31. Then, the molding dies 33A and 33B are heated. The heating time can be exemplified by about 30 seconds, for example.

The housing recesses 35 of the molding dies 33A and 33B are squeezed by the throttle port 16, and if the amount of the liquid silicone resin poured by the injector 17 is adjusted to an appropriate amount, the liquid silicone resin in the housing recesses 35 becomes the throttle port 36. The liquid does not leak to the outside through the gap, and the void not filled with the liquid silicone resin 18 does not occur in the housing recess 35.
As shown in FIG. 4D, after the liquid silicone resin 18 and the predetermined portion 32 of the string 31 are pressurized and heated, the molding dies 33A and 33B are opened, so that as shown in FIG. An elastic silicone resin, that is, a soft cell chip 20 that is cured by a thermosetting reaction and has a certain shape can be fixed to the portion 32.

As described above, a string in which the soft cell chip 20 is fixed to an actual end can be manufactured as the predetermined portion 32 of the string 31.
5A to 5E are illustrative views showing a string manufacturing method according to still another embodiment of the present invention, that is, a process of soft cell chip processing according to another embodiment of the present invention.
As shown in FIG. 5, a semi-finished gel-like silicone resin sheet 43 is wound around a predetermined portion to be an end of a string 41 to be processed. As for the silicone resin, a gel-like sheet formed by adjusting its molecular weight is commercially available. Using this gel-like silicone resin sheet, a soft cell chip is manufactured by the manufacturing method shown in FIGS. 5A to 5E.

FIG. 5B is a cross-sectional view of a pair of molding dies 44A and 44B as molding dies. A feature of the molding dies 44A and 44B is that an escape recess 46 is formed in the central portion in the length direction of the housing recess 45. It is the same as the molding dies 13A, 13B, 33A, and 33B described above that the throttle openings 47 are formed at both ends of the housing recess 45.
After the predetermined portion 42 of the string 41 around which the gel-like silicone resin sheet 43 is wound is set in the housing recess 45 of the molding dies 44A and 44B, the molding dies 44A and 44B are closed and the string 41 is pressurized and molded. The molds 44A and 44B are heated. As a result, as shown in FIG. 5C, the gel-like silicone resin 43 is melted by a thermosetting reaction, and a part of the gel-like silicone resin 43 escapes and flows into the recess 46 to cause a curing reaction.

  FIG. 5D is an illustrative view of a string obtained by opening and removing the molding dies 44A and 44B. The thermally cured silicone resin 43 has a shape in which only a portion corresponding to the relief recess 46 is swollen. Next, as shown in FIG. 5E, the string 41 and the silicone resin 43 are cut so as to remove the portion corresponding to the escape recess 46, so that the string with the soft cell chip 20 fixed to the end of the string 41 is obtained. Can be obtained.

  The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

It is a figure which shows the underpants as an example of the clothing by which the string which concerns on one Embodiment of this invention is used. It is an illustration figure which shows the manufacturing process of the string which concerns on one Embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on one Embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on one Embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on one Embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on one Embodiment of this invention. It is a perspective view which shows an example of the shaping die used for the manufacturing process of the string which concerns on one Embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on other embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on other embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on other embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on other embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on other embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on further another embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on further another embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on further another embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on further another embodiment of this invention. It is an illustration figure which shows the manufacturing process of the string which concerns on further another embodiment of this invention.

Explanation of symbols

11, 31, 41 String 12, 32, 42 Predetermined part (part to be the end)
13A, 13B, 33A, 33B, 44A, 44B Mold (mold)
15, 33, 45 Containing recess 16, 36, 47 Restriction port 17 Injector 18, 43 Silicone resin 19 Bank 20 Soft cell chip

Claims (6)

A string having an elastic soft cell chip at the end,
A liquid or gel silicone resin material is applied to a predetermined portion to be an end of a string, and the predetermined portion and the silicone resin material are placed in a mold and heated and pressurized, whereby the silicone resin material is and thermally cured in a cylindrical outer shape conforming to the mold is secured to ambient of the predetermined portion at a predetermined portion so as to cover a cylindrical, soft cell chip with no stimulus to the human body is resilient A string suitable for clothing , characterized by The said predetermined site | part and a soft cell chip | tip are cut | disconnected in those length direction approximate center part, The predetermined site | part cut | disconnected into two each becomes the edge part of a string, It is characterized by the above-mentioned. A string suitable for clothing . (1) a step of preparing a string to be processed;
(2) A step of setting a predetermined portion to be an end of the string in an open mold, and the mold is a mold having a semicircular receiving recess whose upper section is open in a cross section perpendicular to the length direction. Yes, the mold consists of a pair of molds,
(3) a step of pouring a silicone resin material of liquid into the mold within
(4) the step of closing and heating the mold, and (5) the step of opening the mold and taking out the string after heating for a predetermined time,
The manufacturing method of the string with a soft cell chip characterized by including these. In the manufacturing method according to claim 3, instead of the steps (2) and (3),
(2) 'a step of covering a predetermined portion to be an end of the string with a gel-like silicone resin;
(3) 'a step of setting a predetermined portion covered with the gel-like resin in an open mold;
The manufacturing method of the string with a soft cell chip | tip characterized by comprising. In the manufacturing method, after the step (5),
(6) A step of cutting a predetermined portion of the string that is taken out by opening the molding die at the center in the length direction;
The manufacturing method of the string with a soft cell chip | tip of Claim 3 or 4 characterized by the above-mentioned.   The said shaping | molding die has a longitudinal recessed part which accommodates the predetermined site | part of the said string, and has the bank part where the recessed part inner surface swelled in the center part of the length direction of the recessed part, It is characterized by the above-mentioned. A method of manufacturing a string with a soft cell chip.

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