Method for manufacturing tape-shaped opening and closing device for article opening

Abstract

[Problem] In the tape-like opening / closing tool using a magnetic, the risks of occurring of corrosion of the magnet and breakage of tape due to incursion by moisture are reduced by heating the heat-shrinkable resin tube to heat-shrink.　[Solution] The present invention provides a tape-like opening / closing tool for an article opening. The present invention comprises a heat-shrinkable resin tube and a plurality of magnets arranged in the tube at regular intervals. The magnets are sealed such that the positions of the magnets are fixed by the resin after heat-shrinkage. The present invention provides a method for manufacturing a tape-like opening / closing tool for an article opening, the method comprising: a step of preparing a heat-shrinkable resin tube (12); a step of arranging a plurality of magnets (13) in the tube (12) at regular intervals; and a step of fixing the magnets by heating the tube to heat-shrink.　

Description

[Technical field]

[0001] The present invention relates to a tape-shaped opening and closing device for an article opening, a manufacturing method thereof, and an article using said opening and closing device. "Articles" include, for example, clothes, bags, shoes, and openable containers. [Background technology]

[0002] There are many types of tape-like fasteners for opening articles, including those with multiple snap buttons spaced at regular intervals along a tape, those with a combination of fastener teeth and a slide fastener pull tab, and tape-like hook-and-loop fasteners.

[0003] In the present invention described below, a plurality of permanent magnet pieces arranged in a tape shape is used. Prior art of this type includes, for example, Japanese Utility Model Publication No. 59-70508, Japanese Utility Model Publication No. 4-74010, Japanese Patent Publication No. 11-269713, Japanese Patent Publication No. 2001-137015, and Japanese Patent Publication No. 2013-538435.

[0004] The encapsulation device of JP2013-538435A, which is considered to be closest to the present invention, has a first flexible strip 10 (the reference numerals in this paragraph and the next paragraph are those in this prior art document) and a second flexible strip 20. The former has a cavity 16 in which a magnet piece 18 can be incorporated, and the latter has a cavity 26 in which a magnet piece 28 can be incorporated. The magnet piece 18 is embedded in the cavity 16 by a first film 19, and the magnet piece 28 is embedded in the cavity 16 by a second film 29. The first strip 10 and the second strip 20 are in contact with each other, and the magnet pieces 18 and 28 are magnetically attracted to each other.

[0005] The first membrane 19 and the first flexible strip 10, and the second membrane 29 and the second strip 20 are connected by "mechanical connection" (

[0187] ) or by "selected from the group consisting of high frequency welding, ultrasonic welding, heat welding, stitching, sealing tape, adhesive bonding or combinations thereof" (

[0188] ). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Practical application 59-70508 [Patent Document 2] 4-74010 [Patent Document 3] Patent Publication No. 11-269713 [Patent Document 4] Patent Publication No. 2001-137015 [Patent Document 5] Special table 2013-538435 Summary of the Invention [Problem to be solved by the invention]

[0007] According to the above-mentioned JP2013-538435 (Patent Document 5), in order to embed the magnet pieces, the film covering the surface of the strip body and the magnet pieces is mechanically or chemically bonded. The magnet is then fixed in position within the cavity by this bonding. The remaining Patent Documents 1 to 4 are similar in this respect, although I will not introduce them one by one.

[0008] In the above-mentioned conventional methods, if the film covering the surface of the strip body and the magnet pieces is not bonded sufficiently, moisture may penetrate through the gap and cause the magnet to rust, or the joint may be damaged, and in extreme cases, the magnet may pop out. The present invention aims to solve these problems by thermally shrinking the resin to firmly fix the magnet in place. [Means for solving the problem]

[0009] The present invention, which achieves the above object, A method for manufacturing a tape-type opening and closing device for an article opening, comprising the steps of preparing a heat-shrinkable resin tube and arranging a plurality of magnets at regular intervals in the resin tube, the step of arranging a plurality of magnets at regular intervals in the resin tube comprising the steps of preparing a tape with the magnets attached by an adhesive and sealing the tape in the resin tube, and further comprising the steps of heating the tube to thermally shrink the tube and fix the magnets, The process of preparing the tape with the magnet attached thereto and enclosing it in the tube comprises the following steps (a) to (h): This is a way to . (a) A first tape is placed on top of a number of fixed magnets set at regular intervals on a jig. (b) placing a plurality of magnets on the first tape and attaching them to the fixed magnet via the first tape; (c) providing adhesiveness to the magnet on the first tape; (d) A second tape is placed on top of the magnet on the first tape so that it adheres to the adhesive magnet. (e) Peeling the first tape and the second tape from the fixed magnet. (f) The first tape and the second tape are peeled off from each other, and only the second tape with the magnet attached thereto is taken out. (g) Attaching a weight to the second tape with the magnet attached thereto. (h) The second tape with the magnet attached thereto is inserted into the resin tube with the weight at the front.

[0010] In another embodiment, the tube contains not only a plurality of magnets but also a tape with the magnets attached thereto, which is required in one embodiment of the method for producing a tape closure.

[0011] Preferably, the heat-shrinkable resin tube is a complete tube with no cuts in the longitudinal direction.

[0012] In another embodiment, the heat-shrinkable resin tube is a tube having a single welded portion in the longitudinal direction.

[0013] In still another embodiment, a tube having two welded stripes in the longitudinal direction is used as the heat-shrinkable resin tube.

[0014] The heat-shrinkable resin tube in each of the above-mentioned embodiments has welded portions at both ends in the longitudinal direction.

[0015] The present invention also provides a method for manufacturing a tape-type opening and closing device for an article opening. According to a first method, the method includes the steps of preparing a heat-shrinkable resin tube, arranging a plurality of magnets at regular intervals in the tube, and heating the tube to heat-shrink the tube and fix the magnets in place. The step of arranging a plurality of magnets at regular intervals in the resin tube includes a step of creating a tape with the magnets attached by adhesive and sealing the tape in the resin tube.

[0016] According to the second method, This method is characterized by including, in addition to the first method, a step of forming welded portions at both ends of the resin tube in the longitudinal direction.

[0017] According to the third method, The process of preparing the tape with the magnet attached thereto and enclosing it in the tube comprises the steps (a) to (h) described below in

[0021] .

[0018] Preferably, each of the above methods further comprises a step of heating both longitudinal ends to form welded portions. This step is economically performed, if possible, simultaneously with the welding step in each of the above methods.

[0019] In the first method, the step of "arranging a plurality of magnets at regular intervals within the tube" preferably comprises creating a tape with magnets attached and enclosing this within the tube.

[0020] Preferably, the "method of producing a tape with a magnet attached thereto and enclosing it in the tube" is carried out as follows.

[0021] (a) A first tape is placed on top of a number of fixed magnets set at regular intervals on a jig. (b) placing a plurality of magnets on the first tape and attaching them to the fixed magnet via the first tape; (c) providing a magnetic head on the first tape with adhesion to the tape; (d) A second tape is placed on top of the magnet on the first tape and adhered to the adhesive magnetic head. (e) Peeling the first tape and the second tape from the fixed magnet. (f) The first tape and the second tape are peeled off from each other, and only the second tape with the magnetic head attached thereto is taken out. (g) Attaching a weight to the second tape having the magnetic head attached thereto. (h) Insert the second tape with the magnetic head attached into a tube with the weight at the front.

[0022] The resin used for the tube may be any resin that can be heat-shrunk and heat-sealed, including polyolefin, silicone, fluororesin, and other well-known resins.

[0023] The magnet to be used may be a well-known permanent magnet, such as an alnico magnet, a ferrite magnet, or a neodymium magnet. Effect of the Invention

[0024] The tape-type opening and closing device for an article opening of the present invention comprises a tube made of heat-shrinkable resin and a number of magnets arranged at regular intervals inside the tube. Since the magnets are encapsulated by the resin after heat shrinkage, they can be easily fixed in position at regular intervals, and the risk of rusting of the magnets due to moisture penetration and damage to the magnets in the tape can be reduced.

[0025] In particular, if a tube without cuts is used as the resin, there are no welded parts along the way except at both ends, which gives it a beautiful appearance, a smooth feel, and makes it easy to attach to clothing or the opening of a bag. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view of a bag in which the tape-type opening and closing device of Example 1 of the present invention is used for the opening and closing part. [Diagram 2] 1A is a side view of a tape-shaped opening / closing device according to a first embodiment of the present invention, FIG. 1B is a plan view, FIG. 1C is a cross-sectional view of FIG. 1B, and FIG. [Diagram 3] 1A and 1B are perspective views showing steps (a) and (b) of a method for producing a tape-shaped opening / closing device according to a first embodiment of the present invention. [Figure 4] FIG. 15 is a perspective view showing a magnetization method in the manufacturing method of a tape-shaped opening and closing device according to the eleventh embodiment of the present invention. [Diagram 5] 10A to 10C are perspective views showing steps (a), (b), and (c) of a method for producing a tape-shaped opening / closing device according to a second embodiment of the present invention. [Figure 6] FIG. 11 is a perspective view showing steps (a) and (b) of a method for producing a tape-shaped opening / closing device according to a fourth embodiment of the present invention. [Figure 7] 1A and 1B are plan views showing examples of magnetic pole arrangement of a tape-type opening / closing device according to a first embodiment of the present invention. [Figure 8] 11A and 11B are plan views showing examples of magnetic pole arrangement of a tape-shaped opening / closing device according to a second embodiment of the present invention. [Figure 9-1] 1A to 1D are side views showing steps (a) to (d) of manufacturing the tape-shaped opening / closing device of Example 1. [Figure 9-2] 1A to 1C are side views showing manufacturing stages (e) and (f) of the tape-shaped opening and closing device of Example 1. [Figure 9-3] 3A to 3C are side views showing steps (g) to (i) of manufacturing the tape-shaped opening and closing device of Example 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0028] Fig. 1 is a perspective view of a bag B in which a tape-shaped opening / closing device 1 according to a first embodiment of the present invention is used for the opening 11. This bag opening 11 can be opened wide by inserting a finger into the opening 11 at any place where the magnet of the opening / closing device 1 is not installed, and the opening 11 can be opened wide by the force of the finger against the magnetic attraction. When the finger is released, the opening 11 is automatically closed immediately by the magnetic attraction. This prevents the opening from being left open due to careless forgetting to close it, allowing pickpockets to steal the contents.

[0029] Although not shown, the device can be used for other articles that generally have an opening and closing part in addition to the bag B. For example, the opening and closing parts of trousers or skirts, the opening and closing parts of pockets, sleeves, glove insertion openings, shoes, boots, openable and closable containers, etc. For example, when used on trousers, it eliminates the embarrassment of forgetting to close the front opening after using the toilet. EXAMPLES

[0030] The tape-shaped opening and closing device 1 used in Fig. 1 is related to Example 1 of the present invention. As shown in Fig. 2, multiple disk-shaped magnets 13 are set at regular intervals in a tubular resin 12, and their positions are fixed by the resin that has contracted and deformed.

[0031] This tape-shaped opening and closing device 1 is sealed at both ends 14, 15, and does not allow moisture to enter. There is nothing but air between the magnets 13. For decoration or other needs, the spaces between the magnets can be filled with colored powder or the like.

[0032] Any resin capable of being thermally shrunk and thermally welded may be used as the resin 12. Such resins may be polyolefin-based, silicone-based, fluororesin-based, or other well-known resins.

[0033] A well-known permanent magnet can be used as the magnet 13. As the permanent magnet, for example, an alnico magnet, a ferrite magnet, a neodymium magnet, or other magnets that are well known in themselves can be used.

[0034] The number of magnets 13 to be used can be freely set depending on the application. It is also possible to prepare a long tape with magnets, several meters to several tens of meters, and cut it at the work site to obtain a tape of the required length with the required number of magnets depending on the application.

[0035] The distance between the magnets 13 can be freely set to any length depending on the application. A distance of 8 mm to 50 mm is usually sufficient. If the distance exceeds 50 mm, the opening 11 may not be closed sufficiently.

[0036] The size of magnet 13 may be determined based on the intended use and the diameter of the tube. Generally, a diameter of 3 mm to 15 mm is sufficient. The diameter of the tube used is approximately 1 to 2 mm larger than the maximum diameter of the magnet before heat shrinkage.

[0037] The shape of the magnet 13 is not limited to a disk, and may be any shape, but it is preferable that the magnet has a flat surface with a large contact area (a cube, a rectangular parallelepiped, etc.). A sphere or other shape with a small contact area is not suitable.

[0038] The magnetic pole arrangement of the multiple magnets 13 can be freely determined according to the application and needs. Examples of magnetic pole arrangements are shown in Figure 5. In (a), S poles and N poles are arranged alternately on both the front and back of the tape. In (b), the front side of the tape has only S poles, and the back side has only N poles.

[0039] It is also possible to set unmagnetized metal pieces inside the tape-shaped opening / closing device 1 and magnetize them after fixing their position. This makes it possible to avoid situations where the magnets stick together before thermal contraction, making it impossible to maintain a constant distance. The magnetized state is shown in Figure 4. If the magnets are arranged and magnetized as in (a), the S poles and N poles can be set alternately, and if the magnets are arranged and magnetized as in (b), the S poles and N poles can be magnetized every other one.

[0040] To manufacture this tape-shaped opening and closing device 1, as shown in Fig. 3, the disk-shaped magnet 13 is pushed into one end of the tube 12 at a fixed distance, and then heated with a heat gun or hot air to cause thermal shrinkage. In this embodiment, the diameter of the tube 12 is 7 mm, and the diameter and height of the disk-shaped magnet 13 are 6 mm and 3 mm, respectively. The work in Example 1 was performed manually, but mass production is possible by mechanization. Both ends 14, 15 are similarly heat-treated and sealed.

[0041] When sealing magnets in a tube, arranging the magnets manually takes time and tends to result in inaccurate placement of the magnets. In order to seal magnets in a tube at precise intervals, it is preferable to use the following method.

[0042] 9(a) and 9(b), a first tape 22 is placed on top of multiple fixed magnets 21 set at regular intervals on a jig 20. The first tape 22 is simply placed on the fixed magnets 21 and is not fixed in place. 9(b), as shown in FIG. 9(c), a plurality of magnets 13 are placed on the first tape 22 and are attached by magnetic force to the fixed magnet 21 so as to sandwich the first tape 22. 9(c), the head of the magnet 13 on the first tape 22 is made adhesive to the tape. This can be achieved, for example, by applying an adhesive (not shown) to the head 131 of the magnet 13, or by using an adhesive tape as the second tape described below. (d) The second tape 23 is placed on top of the magnet 13 on the first tape 22 and attached to the magnet 13. (e) The first tape 22 and the second tape 23 are peeled off from the fixed magnet 21. The first tape 22 is used to prevent the magnet 13 on the second tape 23 from directly adhering to the fixed magnet 21 and becoming difficult to separate. As shown in Figure 9-2(e), when the first tape 22 is lifted, the second tape with the magnet 13 attached is lifted away from the fixed magnet 21. 9-2(e)(f), the first tape 22 and the second tape 23 are pulled away from each other, and only the second tape 23 with the magnet 13 attached thereto is taken out. The first tape 22 is no longer needed at this point, so it is removed. (g) A lead thread 25 with a weight 24 is attached to the second tape 23 to which the magnet 13 is attached. (h) The second tape 23 with the magnet 13 attached thereto is inserted into the tube 12. At this time, the tube 12 is held vertically, and the lead-in thread 24 and the second tape 23 with the magnet 13 attached thereto are inserted into the tube by utilizing the gravity of the weight 25. The subsequent steps (Figure 9-3(i)) are as described above.

[0043] With this method, not only the magnet 13 but also the second tape 23 to which it is attached remains inside the finished tape-like closure. If the tube 12 is transparent, the tape 23 inside may make it look unattractive, but this can be avoided by making the tube 23 opaque. As will be described later, the finished tape-like closure is often stored in a bag-like passage (not shown) called piping in a bag or the like, so it is hidden in the passage and does not pose much of a problem with its appearance.

[0044] The tube used in this example is a transparent flame-retardant shrinkable tube known as "Sumitube V (300V)" (a registered trademark of Sumitomo Electric Industries, Ltd.) made of flame-retardant polyvinyl chloride resin. The shrinkage rate / inner diameter shrinkage rate was 50% or more, and the length change rate was -30% or more.

[0045] To attach this tape-type opening and closing device 1 to bag B in Fig. 1, piping was provided at the left and right openings of the bag to house this tape-type opening and closing device 1, and it was placed inside of it. Of course, the positions of the magnets 13 of the left and right tape-type opening and closing devices were almost aligned, and the south pole and north pole were placed facing each other. EXAMPLES

[0046] FIG. 5 shows a method for manufacturing a tape-shaped opening / closing device 1A according to Example 2. In this example, a single cutout 16A is provided in the longitudinal direction of a heat-shrinkable tube 12A, and multiple magnets 13A are set at regular intervals through this cutout 16A (a) (b). After the edges 17A of the cutout 16A are welded together, the entire resin is heat-shrunk (c). Both ends 14A, 15A are also welded. In this way, a tape-shaped opening / closing device 1A having a single welded portion 17A as shown in FIG. 7 is obtained.

[0047] To attach the tape-type opening / closing device 1A of Example 2 to an article, it can be passed through a bag-shaped passage as in Example 1, or it can be sewn or glued to the opening of the article by utilizing the welded portion 17A of the cut portion. EXAMPLES

[0048] In Example 2, a tube with one longitudinal cut was used, but this can be replaced with a slightly wider, flat, heat-shrinkable resin plate. The resin plate is folded along the longitudinal center line, a magnet is enclosed in it as in Example 2, the longitudinal edges and both ends are welded together, and then the whole is heat-shrunk. Example 2 and Example 3 are essentially the same, with the only difference being whether the bent portion is formed in advance or formed later by folding. EXAMPLES

[0049] In Example 4, as shown in Fig. 6, two heat-shrinkable resin plates 12B1, 12B2 are used. A number of magnets 13B are set between them at regular intervals (a), and the left and right longitudinal ends 17B1, 17B2 of the two resin plates are welded together, after which the entire resin is heat-shrunk. In this way, a tape-shaped opening / closing device 1B having two welded portions 17B1, 17B2 as shown in Fig. 6(b) is obtained. Both ends 14B, 15B are also welded and sealed. [Explanation of symbols]

[0050] 1,1A,1B Tape-shaped opening and closing device 11 Opening and closing section 12, tubular resin. 12A Tube of resin with cutout 12B1, 12B2 Two flat resin sheets 13, 13A, 13B Magnet 14,15;14A,15A;14B,15B both ends 16A Incision 17A Incision edge (one welded part) 17B1, 17B2 Left and right ends (2 welded strips) 20 Jig 21 Fixed magnet 22 Tape 1 23 Tape 2 24 weight 25 Introduction thread B Bag

Claims

1. A method for manufacturing a tape-type opening and closing device for an article opening, comprising the steps of: A step of preparing a heat-shrinkable resin tube (12); The method includes a step of disposing a plurality of magnets (13) at regular intervals in the resin tube (12), The step of arranging a plurality of magnets (13) at regular intervals in the resin tube (12) includes a step of preparing a tape (23) to which the magnets (13) are attached by an adhesive, and sealing the tape in the resin tube (12); Further, the step of heating the tube to thermally shrink the tube and fix the magnet is included. In the method, The method includes the steps of preparing the tape (23) having the magnet (13) attached thereto and enclosing it in the tube (12), the steps including the steps of (a) to (h) below. (a) A first tape (22) is placed on a plurality of fixed magnets (21) set at regular intervals on a jig (20). (b) A plurality of magnets (13) are placed on the first tape (22) and attached to the fixed magnet (21) via the first tape (22). (c) imparting adhesiveness to the magnet (13) on said first tape (22). (d) A second tape (23) is placed on top of the magnet (13) on the first tape (22) and adhered to the adhesive magnet (13). (e) The first tape (22) and the second tape (23) are peeled off from the fixed magnet (21). (f) The first tape (22) and the second tape (23) are pulled away from each other, and only the second tape (23) with the magnet (13) attached thereto is taken out. (g) Attach a weight (25) to the second tape (23) to which the magnet (13) is attached. (h) The second tape (23) with the magnet (13) attached thereto is inserted into the resin tube (12) with the weight (25) at the front.

2. Further, a step of forming welded portions (14, 15; 14A, 15A; 14B, 15B) at both ends of the resin tube (12) in the longitudinal direction. The method of claim 1 , comprising:

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