JP2003183959A - Method for treating end of string - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for treating the end of a string by which the string has excellent fashionability with a good touch because the end of the string is covered with a tube or a cap made of a silicone rubber. <P>SOLUTION: This method for treating the end of the string comprises the following steps. (i) A step of elastically extending the tube or cap made of the silicone rubber and having the diameter which is the same as or smaller than that of the end of the string to a larger diameter than that of the end of the string. (ii) A step of inserting the end of the string into the extended tube or cap. (iii) A step of releasing the extending force for the tube or cap, elastically restoring the tube or cap and covering the end of the string with the tube or cap. (iv) A step of thrusting a pin or a thread through the tube or cap and the end of the string and fixing the tube or cap and the end of the string. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a string terminal processing method performed for the purpose of preventing the string from being unraveled. [0002] Terminal processing of a string is performed to improve workability when the string is passed and to prevent the string from being unraveled. In recent years, even in the field of clothing, even strings are considered fashion items, and in the apparel industry, they are used for sportswear and casual wear. Heretofore, it has been common practice to terminate the cord with a shrinkable tube made of a vinyl chloride resin, or by immersing it in a sol of a vinyl chloride resin and then gelling it by drying. As described above, in recent years, the emphasis has been placed on fashionability, and the current situation is that the terminal processing of strings has been reviewed. In order to cope with such a situation, there has been proposed a method using a shrinkable tube or a shrinkable cap made of silicone rubber. However, in this case, there are limitations such as limited hardness, high temperature required for shrinkage, and limited string material. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a string terminal processing method which can easily and reliably prevent a string terminal from being unraveled for a long time with good fashion. Aim. Means for Solving the Problems and Embodiments of the Invention In order to achieve the above object, the present invention provides: (i) a silicone rubber having a diameter equal to or smaller than the diameter of the end of a string to be treated; Elastically expanding the tube or cap to a diameter larger than the diameter of the end of the string, (ii) inserting the end of the string to be treated into the expanded tube or cap,
(Iii) a step of releasing the expanding force on the tube or cap to restore the tube or cap elastically and covering the end of the string with the tube or cap; (iv) then, attaching a pin or a pin to the end of the tube or cap and the string. There is provided a method of processing a terminal of a string, comprising a step of piercing a thread to fix a tube or a cap and a terminal of the string. According to the present invention, a silicone rubber tube or cap is extended and inserted into the end of the string, and then the plastic fixing pin is pierced to prevent the end of the string from coming off. Because it is covered with a rubber tube or cap, it has excellent fashionability and good feel. In addition, a silicone rubber tube or cap is extended and covered on the end of the string, so that it is difficult to remove the pin. Moreover, such terminal processing can be performed with a simple jig and work. Hereinafter, the present invention will be described in more detail.
In the string terminal method of the present invention, first, a silicone rubber tube or cap having a diameter equal to or smaller than the diameter of the string to be treated is elastically expanded to a diameter larger than the diameter of the string terminal. In this case, the strings to be processed by the terminal include:
Examples include those used in shoes, sportswear, casual wear, handbags, and the like, but are not limited thereto, and are made of synthetic fibers represented by polyester, polyurethane, nylon, and the like. And natural fibers such as wool and cotton, but are not limited thereto. On the other hand, the silicone rubber tube or cap used in the present invention may be a tube or cap made of a general silicone rubber material, but preferably has an elongation at break of 100% or more. This is 100
If the ratio is%, the tube or cap may be broken when the diameter of the tube or cap is small relative to the diameter of the string when the tube or cap is expanded. The color of the silicone rubber tube or cap is, of course, not limited by fashion. In addition, the curing mechanism of the silicone rubber also includes an addition curing type and a peroxide curing type, but is not limited thereto, and the hardness is not limited, but is preferably 10 to 80 degrees in JIS-A hardness. If it is too low, the workability may be deteriorated or a sticky feeling may be generated, and stains may become severe. If it is too hard, problems may occur such as a sense of incongruity or the useless use of silicone. As a method of molding a silicone rubber tube or cap, a method of curing a silicone rubber compound containing a curing agent by a hot press in a mold, a method of extruding into a predetermined shape by an extruder and a method of curing Molding methods such as a method of injection molding silicone, or a method of dissolving a silicone rubber compound in a solvent such as toluene, dipping a liquefied silicone rubber compound into a jig having a required shape, drying, curing, and demolding, etc. Not limited. Next, the end of the string to be treated is inserted into the expanded tube or cap, and then the expanding force on the tube or cap is released to elastically restore the tube or cap. Cover with. Here, the means for expanding the tube or cap is not particularly limited, and the diameter of the tube or cap can be expanded using a known appropriate device or instrument. For example, a drill chuck as shown in FIG. 1 can be used. That is, this drill chuck 1
Has three claws 2, each of which has an extension pin 3 attached thereto, and inserts a drill chuck handle (not shown) into the opening / closing handle hole 4 of the drill chuck 1 to operate the handle. As a result, the claw 2 is opened, and the extension pin 3 can be moved in a direction away from the center integrally therewith. First, the claw 2 is closed, and the extension pins 3 are close to each other. In this state, the three expansion pins 3 are inserted into the silicone rubber tube 10, for example. Next, the drill chuck handle is inserted into the handle hole 4 and operated to open the claw 2 and move the extension pin 3 away from the center. Thereby, each pin 3 presses the inner wall of the silicone rubber tube 10, and as shown in FIG.
0 is larger than the thickness of the string 12 against the elastic force. Next, in this state, as shown in FIGS. 2 and 3, the terminal 12a of the string 12 is inserted into the silicone rubber tube 10 which is expanded beyond the thickness of the string 12.
Thereafter, the pawl 2 is closed by turning the handle in the opposite direction to the above, and the extension pin 3 is moved in the direction toward the center. This causes the tube 10 to shrink, and
Is extended, the extension pin 3 is pulled out, and the tube 10 is coated on the terminal 12a of the string 12 as shown in FIG. Further, as shown in FIG. 5, the fixing tag pin 5 is pierced into the tube 10 and the terminal 12 a of the string 12, and the tube 10 is fixed so as not to come off from the terminal 12 a of the string 12. In this case, both ends of the pin 5 are provided with fixing tags 6.
Are provided, and the tags 6 are shown in FIGS.
As shown in (c), decorativeness, functionality, and the like can be provided. For example, one tag 6 in FIG. 6 (c) is formed in a ring shape, and has a function of hanging various objects.
The tag pin and the tag can be formed of plastic such as nylon. The driving and piercing of the tag pin 5 can be performed by using an appropriate tool. For example, a tag pin attaching machine as shown in FIGS. 7 and 8 can be used. Here, in FIG. 7, 21 is a tag pin attaching machine, 22
Denotes a needle stopper, 23 denotes a free lever, and in FIG. 8, 31 denotes a tag pin attaching machine, 32 denotes a grip,
3 indicates an adapter, 34 indicates a cutter lock, 35 indicates a cutter, and 36 indicates a needle. In this case, the needle 36 is pierced through the silicone rubber tube 10 and the terminal 12a of the string 12, and then the grip pin 32 of the tag pin attaching machine 31 is gripped to penetrate the tag pin into the tube 12 and the terminal 12a of the string 12, thereby passing through the tag pin 5. Can be attached. The means for expanding the diameter of the silicone rubber tube or cap is not limited to a drill chuck. When a thread for fixing the tube and the end of the string is penetrated, the tube or the cap and the string can be penetrated by using a sewing machine. EXAMPLES Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. [Example] Silicone rubber compound K
E174U (manufactured by Shin-Etsu Chemical Co., Ltd.) was added to 100 parts (parts by weight, the same applies hereinafter), 1.5 parts of peroxide curing agent C-23 (manufactured by Shin-Etsu Chemical Co., Ltd.), kneaded with two rolls, and then separated to obtain a 50 mmφ A tube having an inner diameter of 1.5 mmφ and a wall thickness of 1.0 mm was manufactured by an extruder. Next, this tube was cut into a length of 20 mm, inserted into a 1 mmφ 30 mm long pin set on three nails of a drill chuck taper type PU-11034 model No. 10EL manufactured by Yukiwa Seiko, and the silicone tube was expanded to 4 mmφ inside diameter with a handle. did. There, a 3mmφ polyester black string (SIC
FS-003) One end of 1 m was inserted, the drill chuck was returned with the handle, the silicone tube was removed from the pin, and the silicone tube was fixed to a string. The other end on the other side of the string was similarly covered with a silicone tube and fixed. Further, a nylon tag pin UX-5 (manufactured by Nippon Banock) was driven from above the fixed silicone tube by a tag pin attaching machine 303X (manufactured by Nippon Banock) so as to penetrate the tube and the string, and fixed. [Comparative Example] A string in which the silicone tube was covered without making a tag pin from above the silicone tube in Example 1 was prepared. [Measurement of pull-out force] Using an autograph (manufactured by Shimadzu Corporation) as a measuring machine, a test speed of 50 mm / min.
Using a jig for pulling a hole diameter φ3.5 string end processed product,
Table 1 shows the results of measuring the pull-out force. [Table 1] It can be seen that the example is much more difficult to remove than the comparative example. According to the present invention, since the end of the cord is covered with a silicone rubber tube or cap, the fashion is excellent and the feel is good. In addition, a silicone rubber tube or cap is extended and covered on the end of the cord, so that it is difficult to pull out. Further, since a fixing pin or thread penetrates for further stopping, it is difficult to pull out. Further, the above effects can be obtained with a simple jig and operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a silicone rubber tube before a diameter expansion. FIG. 2 is a perspective view of a state in which a terminal of a string is about to be inserted into a silicone rubber tube whose diameter has been expanded. FIG. 3 is a perspective view of a state in which a terminal of a string is inserted into a silicone rubber tube whose diameter has been increased. FIG. 4 is a perspective view showing a state in which a silicone rubber tube is coated on a terminal of the string. FIG. 5 is a perspective view showing a state where a tag pin is attached to a terminal of a string and a silicone rubber tube. FIGS. 6A to 6C are side views each showing an example of a tag pin. FIG. 7 is a side view showing an example of a tag pin attaching machine. FIG. 8 is a side view showing another example of the tag pin attaching machine. [Description of Signs] 1 Drill chuck 2 Claw 3 Expansion pin 4 Drill chuck opening / closing handle hole 5 Tag pin 6 Tag 10 Silicone rubber tube 12 String 12a String terminal 21 Tag pin attaching machine 22 Needle stopper knob 23 Free lever 31 Tag pin attaching machine 32 Grip 33 Adapter 34 Cutter lock 35 Cutter 36 Needle

Claims (1)

(I) A silicone rubber tube or cap having a diameter equal to or smaller than the diameter of the end of the string to be treated is elastically increased to a diameter larger than the diameter of the end of the string. Expanding, (ii) inserting the end of the string to be treated into the expanded tube or cap, (iii) releasing the expanding force on the tube or cap to elastically restore the tube or cap, A step of covering the terminal with the tube or the cap, and (iv) a step of piercing a pin or thread into the terminal of the tube or the cap and the string to fix the terminal of the tube or the cap to the string. String terminal processing method.