JP2003211541A - Composite heat-shrinkable tube, composite heat- shrinkable tube for dyeing, method of dyeing, fishing hook, composite heat-shrinkable tube for protecting electric wire connection part, and protecting method for electric wire connection part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat-shrinkable tube improved in a strength of close contact with an object of covering. <P>SOLUTION: The heat-shrinkable tube is of a double tube, and a heat- shrinkable tube of which the deformation on the occasion of impression of a stress is large is used as an outside one. The outside heat-shrinkable tube puts a pressure on an inside heat-shrinkable tube from outside in heat shrinkage and thereby facilitates the close contact of the inside heat-shrinkable tube with the object of covering. Since the deformation of the inside heat-shrinkable tube on the occasion of impression of the stress is small, the inside tube shrunk with heat is hardly disconnected from the object of covering. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a composite heat-shrinkable tube that shrinks by heating, a composite heat-shrinkable tube for dyeing,
The present invention relates to a dyeing method, a fishing hook, a composite heat-shrinkable tube for protecting electric wire connection points, and a method for protecting electric wire connection points.

[0002]

2. Description of the Related Art Conventionally, a heat shrink tube has been used. The heat shrink tube shrinks in the radial direction when heated, and is therefore used for coating electric wires.

[0003]

In some cases, it is necessary for the heat-shrinkable tube to firmly adhere to the object to be coated. At this time, it is preferable that the heat-shrinkable tube has a shape as close as possible to the outer shape of the object to be covered and is not easily deformed by an external force. However, the conventional heat-shrinkable tube has not always been sufficient in the strength of adhesion. The present invention has been made to solve such a problem, and an object thereof is to provide a composite heat-shrinkable tube having improved adhesion strength to an object to be coated. Moreover, this invention aims at providing the application product which applied the composite heat shrinkable tube.

[0004]

(1) In order to achieve the above object, a composite heat-shrinkable tube according to the present invention comprises a resin-based heat-shrinkable tube that shrinks at least in a radial direction by heating, and a heat-shrinkable resin-based heat-shrinkable tube. And a rubber-based heat-shrinkable tube that covers the shrinkable tube and has a greater tightening force when heated than the resin-based heat-shrinkable tube. A rubber-based heat-shrinkable tube generally utilizes the rubber elasticity of a rubber-based material. When the rubber-based material tries to shrink due to its rubber elasticity at the time of heating, heat shrinkage is performed. As a result, the rubber heat shrink tube
It is easier to increase the tightening force for tightening the object to be coated during heating, as compared with resin-based heat-shrinkable tubes. The rubber-based heat-shrinkable tube that is undergoing heat-shrinking applies a large tightening force (pressure) to the resin-based heat-shrinkable tube during heating, so that the resin-based heat-shrinkable tube corresponds to the outer shape of the object to be coated. It becomes easy to deform.

A resin system that constitutes a heat-shrinkable tube, and
Since the rubber-based heat-shrinkable tube shrinks in the radial direction together with heating, the heat-shrinkable tube has a shape corresponding to the outer shape of the object to be coated by heating. At this time, the outer rubber-based heat-shrinkable tube has a shape corresponding to the outer shape of the inner resin-based heat-shrinkable tube by applying a tightening force (pressure) from the outer side to the inner resin-based heat-shrinkable tube. To the coating object, that is, the adhesion to the object to be coated is promoted.

It is preferable that the resin-based heat-shrinkable tube has a smaller amount of deformation when a stress is applied than the rubber-based heat-shrinkable tube. By using a resin-based heat-shrinkable tube having a small amount of deformation when stress is applied to the inside, the heat-shrinkable tube is less likely to come off the coating target, and the adhesion of the heat-shrinkable tube to the coating target is further improved. In addition, as an example of “a small amount of deformation when a stress is applied”, it is possible to cite a material having a relatively large Young's modulus.

The resin-based heat-shrinkable tube may include, for example, at least one of a fluorine-based resin, a polyolefin-based resin, and vinyl chloride. The rubber-based heat-shrinkable tube is, for example, silicone rubber or EP.
It may have at least one of DM (ethylene propylene rubber).

The composite heat-shrinkable tube may further include a connecting portion for connecting the resin-based heat-shrinkable tube and the rubber-based heat-shrinkable tube. It is possible to prevent the resin-based and rubber-based heat-shrinkable tubes from being displaced from each other.

(2) The dyeing composite heat-shrinkable tube according to the present invention is a dyeing composite heat-shrinkable tube which tightens a part of an object to be dyed to prevent the dye solution from entering, and shrinks at least in the radial direction by heating. A resin-based heat-shrinkable tube, and a rubber-based heat-shrinkable tube that covers the resin-based heat-shrinkable tube and has a large tightening force when heated by the resin-based heat-shrinkable tube. Characterize. By performing dyeing using a composite heat shrinkable tube, for example, compared to binding the dyeing target with a tie-dyed yarn,
Dyeing work can be simplified. Furthermore, by using a rubber heat shrink tube that has a high tightening force when heating, tightening of the composite heat shrink tube to the dyeing target is strengthened, and tightened with the part (tightening point) tightened by the composite heat shrink tube. It is possible to make the difference in the dyeing state from the non-tightened portion (non-tightened portion) more largely different.

(3) In the dyeing method according to the present invention, a resin-based heat-shrinkable tube and a rubber which covers the resin-based heat-shrinkable tube and has a greater tightening force when heated than the resin-based heat-shrinkable tube. An attaching step of attaching a composite heat shrink tube including a system heat shrink tube to a dyeing object, a heat shrinking step of heating and shrinking the heat shrink tube attached to the dyeing object in the attaching step, and the heat shrinking step A dipping step of immersing a dyeing object attached with a heat-shrinkable tube shrunk in a dyeing solution, a drying step of drying the dyeing object immersed in the dyeing solution in the dipping step, and a dyeing dried in the drying step. And a step of removing the heat-shrinkable tube from the object. By performing dyeing using the composite heat-shrinkable tube, the dyeing work can be performed more easily than when the object to be dyed is bound with, for example, a tie-dyed yarn.

Here, the attaching step includes a covering step of covering the protrusion with a dyeing object, an inserting step of inserting the dyeing object covering the protrusion in the covering step together with the protrusion into a heat shrinkable tube, and the inserting step. A separation step of separating the protrusion from the dyeing object inserted into the heat shrinkable tube together with the protrusion,
May have. By using the protrusion, the composite heat-shrinkable tube can be more easily attached to the object to be dyed. By attaching the protrusions to the substrate, the attachment position of the composite heat-shrinkable tube to the object to be dyed, that is, the dyeing pattern can be easily set.

(4) The composite heat-shrinkable tube for sewing according to the present invention is a composite heat-shrinkable tube for sewing for fixing the thread inserted into the button hole of the clothing button, and shrinks at least in the radial direction by heating. And a rubber-based heat-shrinkable tube that covers the resin-based heat-shrinkable tube and has a greater tightening force when heated than the resin-based heat-shrinkable tube. And By fixing the thread using the heat-shrinkable tube, the button can be easily attached to clothing or the like. Furthermore, resin systems that differ in the ease of deformation when stress is applied, and
By using a rubber-based heat-shrinkable tube, it is possible to strengthen the fixation of the thread and make it difficult to remove the button.

(5) A fishing hook according to the present invention covers a fishing line main body, a fishing line, a resin heat shrink tube connecting the fishing line main body and the fishing line, and the resin heat shrink tube, and A composite heat-shrinkable tube having a rubber-type heat-shrinkable tube having a larger tightening force when heated than the resin-based heat-shrinkable tube. By fixing the thread using a composite heat shrink tube,
The fixation of the fishing hook body and the fishing line can be strengthened. Here, the rubber-based heat-shrinkable tube may emit fluorescence. By emitting fluorescence, fish can be attracted to improve fishing results.

(6) A heat-shrinkable tube for protecting a wire connection portion according to the present invention includes a resin-based heat-shrinkable tube that shrinks at least in a radial direction by heating, and a heat-shrinkable tube that covers the resin-based heat-shrinkable tube. The resin-based heat-shrinkable tube has a higher insulation property than the rubber-based heat-shrinkable tube, and the rubber-based heat-shrinkable tube has a higher tightening force when heated than the resin-based heat-shrinkable tube. Is characterized by. The composite heat-shrink tube can strongly protect the wire connection point. At this time, the fact that the resin-based heat-shrinkable tube has a higher insulation property than the rubber-based heat-shrinkable tube contributes to the prevention of electric leakage from the electric wire connection portion.

(7) A method for protecting an electric wire connection point according to the present invention is a resin-based heat-shrinkable tube, which covers the resin-based heat-shrinkable tube, and a tightening force when the resin-based heat-shrinkable tube is heated. With a large heat-shrinkable rubber-based heat-shrinkable tube covering the electric wire connection point, and shrinking by heating the heat-shrinkable tube covering the electric wire connection point in the covering step. Process,
It is characterized by including. By firmly adhering the composite heat-shrinkable tube, which is a composite of resin-based and rubber-based heat-shrinkable tubes, to the wire connection point, the wire connection point can be strongly protected.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1A and 1B respectively show a composite heat shrink tube 1 according to one embodiment of the present invention.
It is a perspective view and a top view showing 0. As shown in the figure, the composite heat-shrinkable tube 10 includes an inner heat-shrinkable tube 11 and an outer heat-shrinkable tube 12 that covers the inner heat-shrinkable tube 11. Both the inner heat-shrinkable tube 11 and the outer heat-shrinkable tube 12 are heat-shrinkable tubes made of a material that shrinks in the radial direction by heating, but have different characteristics as shown below in A to C.

A. Structure of Inner Heat Shrink Tube 11 The inner heat shrink tube 11 is made of a resin material which is hard to be deformed when an external force is applied at room temperature, that is, a heat shrink material having a relatively large Young's modulus. As the resin-based material, for example, any one of fluorine-based resin, polyolefin-based resin, and vinyl chloride can be used. As the polyolefin resin, for example, polyethylene or polypropylene can be used. The heat shrinkage property can be imparted to the resin material, for example, by irradiating the polyolefin material with an electron beam to form intermolecular crosslinks. This polyolefin-based resin shrinks in the radial direction by applying a temperature of 90 ° C. or higher, for example, and retains the contracted state after shrinking, and has excellent insulating properties.

B. Configuration of Outer Heat Shrink Tube 12 The outer heat shrink tube 12 is made of a heat-shrinkable rubber-based material having a relatively large tightening force when heated. Examples of this resin material include silicone rubber and EP
DM (ethylene-propylene rubber (rubber)) can be used. Specifically, a silicone rubber composition obtained by blending a silicone rubber material with a thermoplastic resin such as polyethylene, polystyrene, an acrylic resin, or a silicone resin can be used. Since the rubber-based heat-shrinkable material causes the heat-shrinkage during heating by utilizing the rubber elasticity of the material, it is possible to easily apply a large tightening force (pressure) to the object to be coated during heating. This silicone rubber composition contracts in the radial direction by applying a temperature in the range of 80 to 250 ° C., for example, and retains the contracted state after contraction, and has properties such as rubber elasticity and weather resistance. Have.

C. Method for producing composite heat-shrinkable tube 10 This composite heat-shrinkable tube 10 is an inner heat-shrinkable tube 1
The outer heat-shrinkable tube 12 may be formed on the outer side of 1, or the inner heat-shrinkable tube 11 and the outer heat-shrinkable tube 12 may be formed.
And separately, and then the outer heat shrink tube 12
There is no problem even if the inner heat shrink tube 11 is inserted inside. The outer diameter of the inner heat-shrinkable tube 11 and the inner diameter of the outer heat-shrinkable tube 12 are close to each other. To the extent that the inner heat-shrinkable tube 11 can be covered with the outer heat-shrinkable tube 12 in consideration of the respective elastic deformations, some disagreement between the outer diameter and the inner diameter is allowed.

(Shrinkage of Composite Heat-Shrinkable Tube 10) When the object to be coated is inserted into the composite heat-shrinkable tube 10 and the composite heat-shrinkable tube 10 is heated, the composite heat-shrinkable tube 10 shrinks as described in (1) and (2) below. The heating temperature at this time is set to a temperature at which both the inner heat shrink tube 11 and the outer heat shrink tube 12 heat shrink. (1) By heating, both the inner heat-shrinkable tube 11 and the outer heat-shrinkable tube 12 are heat-shrinked, so that the composite heat-shrinkable tube 10 is deformed so as to correspond to the outer shape of the coating target. At this time, the outer heat-shrinkable tube 12 tightens the inner heat-shrinkable tube 11 with a strong tightening force.
Due to the elasticity of the outer heat shrink tube 12, the heat shrink force of the outer heat shrink tube 12 is uniformly applied to the inner heat shrink tube 11. The inner heat-shrinkable tube 11 is deformed into a shape extremely close to the outer shape of the coating target by the uniformly applied heat-shrinkable force (pressure).

(2) When the heat shrink of the inner heat shrink tube 11 and the outer heat shrink tube 12 is completed, the composite heat shrink tube 10 maintains the shape very close to the outer shape of the object to be coated. That is, the composite heat-shrinkable tube 10 adheres well to the object to be coated. Here, since the inner heat-shrinkable tube 11 is formed of a material that is relatively difficult to deform,
Even when a stress is applied to the composite heat-shrinkable tube 10 from the outside, the composite heat-shrinkable tube 10 can maintain the state of being in close contact with the object to be coated.

(Application of Heat Shrink Tube) The composite heat shrink tube 10 can be applied in various ways. An application example of the composite heat-shrinkable tube 10 will be shown below. A. The dyed composite heat-shrinkable tube 10 can be applied to a mask to be dyed such as cloth. By using the composite heat-shrinkable tube 10 as a mask, the object to be dyed can be protected from the dyeing solution, and various dyeing patterns can be formed on the object to be dyed. FIG. 2 is a flow chart showing a procedure for dyeing an object to be dyed using the composite heat-shrinkable tube 10 as a mask, and FIGS. 3 to 7 are perspective views showing the state of the object to be dyed at that time.

(1) The composite heat-shrinkable tube 10 is attached to the cloth 21 to be dyed (step S11 and FIG. 3). A part of the cloth 21 is inserted into the composite heat-shrinkable tube 10. As will be described later, the composite heat-shrinkable tube 10 prevents the dyeing solution from invading, so that the cloth 21 at the position where the composite heat-shrinkable tube 10 passes is not dyed. (2) The composite heat-shrinkable tube 10 is heated to heat-shrink (step S12 and FIG. 4). Due to the heat shrink of the composite heat shrink tube 10, the cloth 21 corresponding to the inner diameter portion of the composite heat shrink tube 10 is tightened by the composite heat shrink tube 10. This heating can be done in various ways.
For example, the cloth 21 to which the composite heat-shrinkable tube 10 is attached may be placed in an oven to be heated, or hot air may be blown by a dryer or a heat gun to heat it.

(3) The cloth 21 to which the composite heat-shrinkable tube 10 is attached is dipped in the dyeing liquid 23 (step S13 and FIG. 5). The cloth 21 is dyed by being immersed in the dyeing solution 23. Note that FIG. 5 shows an example in which the cloth 21 is placed in the container 24 in which the dyeing solution 23 is stored. (4) The cloth 21 is taken out from the dyeing solution 23 and dried (step S14 and FIG. 6). This drying can be performed by appropriately using natural drying, forced drying using infrared rays, hot air, or the like.

(5) The composite heat shrink tube 10 is removed from the dried cloth 21 (step S15 and FIG. 7). This removal can be easily performed by pulling the cloth 21 from two directions, for example. The portion (tightening portion 26) that has been fastened with the composite heat-shrinkable tube 10 is not dyed, and the other portion (non-tightening portion 27) is dyed. At this time, an intermediate portion (intermediate region 2) between the tightened portion 26 and the non-tightened portion 27
It is customary for 8) to be slightly dyed. As described above, the composite heat-shrinkable tube 10 can obtain a dyeing effect similar to tie-dyeing. In traditional tie-dyeing, a piece of cloth is tied with a thread to prevent the tied area from being dyed. In the present invention, the composite heat shrink tube 1
0 replaces the tie-dyed yarn and hinders dyeing. Since it is easier to pass a part of the cloth through the composite heat-shrinkable tube 10 than to tie it with a thread, the work can be performed efficiently.

This step is performed using the following jig,
It is also possible to improve workability. Specifically, the tube mounting jig 30 including the plate-shaped body 31 and the protrusions 32 formed on the plate-shaped body 31 is used. The procedure for mounting the composite heat-shrinkable tube 10 using the tube mounting jig 30 is as follows. (1) Cover the tube mounting jig 30 with the cloth 21 (FIG. 8). In this way, the cloth 21 rises up corresponding to the protrusions 32. (2) The composite heat-shrinkable tube 10 is packed in the raised portion of the cloth 21. As a result, the composite heat shrink tube 10 is attached to the cloth 21 (FIG. 9). (3) Cloth 21 to which the composite heat shrink tube 10 is attached
Is removed from the tube mounting jig 30 (FIG. 4 above). As described above, the cloth 2 is attached using the tube mounting jig 30.
The composite heat-shrinkable tube 10 can be efficiently attached to 1.

(Experimental Example) A specific experimental example is shown below.
Sumitomo Electric Fine Polymer Co., Ltd. Sumitube F2, 8 x 0.25 (inner diameter before shrinkage: 8 mm, wall thickness before shrinkage: 0.25 mm, inner diameter after shrinkage: 2.0 mm, wall thickness after shrinkage) as the inner heat shrinkable tube 11. : 0.44 mm) as the outer heat shrinkable tube 12 made by Shin-Etsu Chemical Co., Ltd. heat shrinkable rubber tube ST-40DG (inner diameter before shrinkage: 7.8).
~ 10.0 mm, inner diameter after shrinkage: 3.5 to 4.4 mm, wall thickness before shrinkage: 0.8 to 1.2 mm), and cloth 2
A cotton cloth was used as 1. Attach the composite heat-shrinkable tube 10 to a cotton cloth, for example, at 1 to 1 at 80 to 120 ° C.
After heating for about 0 minutes (for example, at 80 ° C for 10 minutes,
The cloth 21 could be given a dyed pattern by immersing it in a dyeing solution and drying it at 20 ° C. for 1 minute). Note that this temperature is not the ambient temperature but the temperature of the composite heat-shrinkable tube 10 itself. This dyed pattern shows that the Sumi tube F2 and the heat-shrink rubber tube S are different from those when either one of the Sumi tube F2 and the heat-shrink rubber tube ST-40DG is used.
The double tube composite heat-shrinkable tube 10 using T-40DG as the inner heat-shrinkable tube 11 and the outer heat-shrinkable tube 12 was able to lighten the dyeing at the tightened portion (non-stained portion).

B. Binding of a string and a thread As shown in FIG.
It can be used for binding 42. This string may be, for example, a string for a mobile phone or a name plate.

It is also conceivable to bind the threads, for example to bind the threads for sewing. FIG. 11 is a perspective view showing a case where the composite heat-shrinkable tube 10 is used for temporarily fixing a button for clothes. 11A and 11B respectively show a button 51.
It shows a state in which is fixed to the cloth 52 with the thread 53 as viewed from above and below. The button 51 can be fixed to the cloth 52 by passing both ends of the thread 53 through the composite heat-shrinkable tube 10 and heating the composite heat-shrinkable tube 10.
As shown in FIG. 12, if the composite heat-shrinkable tube 10 and the button 51 are set as a set, it is convenient for first aid treatment when the button is removed from clothes or the like.

C. Bundling of electric wires A heat-shrinkable tube has been conventionally used for bundling electric wires, but by using the composite heat-shrinkable tube 10 having a double-tube configuration, the heat-shrinkable tube can be fixed in a state in which the heat-shrinkable tube is more closely attached to the wire. it can. FIG. 13 is a partial cross-sectional view showing a state where the connecting portion of the electric wires 61 and 62 is protected (coated) by the composite heat shrink tube 10. Coating 6 for each of the electric wires 61, 62
The composite heat shrink tube 10 covers the connecting portion 67 in which the conductors 65 and 66 from which the conductors 3 and 64 are peeled off are connected to each other. The composite heat-shrinkable tube 10 includes a connecting portion 67 and a coating 6
The steps of 3 and 64 are covered in close contact. Therefore, the connecting portion 67 is protected from the outside air. Here, by raising the heat shrinkage temperature of the composite heat shrinkable tube 10, the inner heat shrinkable tube 11 can be further softened, and the connecting portion 67 can be covered with the composite heat shrinkable tube 10 in a close contact state.

(Experimental Example) UL100 is used for the electric wires 61 and 62.
7, AWG22, using the cross-sectional area 0.35 mm ^2, Sumitomo Electric Fine Polymer, Inc. manufactured SUMITUBE F2,2 × 0.25 (before shrinkage inner diameter as the inner heat shrinkable tube 11: 3 mm, before shrinkage thickness: 0.25 mm , Inner diameter after shrinkage:
1.25 mm, post-shrinkage wall thickness: 0.44 mm, as the outer heat-shrinkable tube 12, a heat-shrinkable rubber tube ST-15DG manufactured by Shin-Etsu Chemical Co., Ltd. (inner diameter before shrinkage: 3.0-).
4.2 mm, inner diameter after shrinkage: 1.3 to 1.8 mm, wall thickness before shrinkage: 0.8 to 1.2 mm), respectively. Electric wire 6
The connection of 1 and 62 was performed by twisting the conducting wires 65 and 66 of each other. Then, the composite heat-shrinkable tube 10 was attached to the connection portion, and the composite heat-shrinkable tube 10 was shrunk by heating at 80 to 120 ° C. for about 1 to 10 minutes. As a result, the composite heat-shrinkable tube 10 firmly adhered to the connecting portion 67. Here, since the inner heat-shrinkable tube 11 has a good insulation property and the outer heat-shrinkable tube 12 has a good weather resistance, the composite heat-shrinkable tube 10 has the electric wires 61, 6
Both the protection of the second connecting portion 67 from the outside world and the prevention of electric leakage can be realized at the same time. Further, since the composite heat-shrinkable tube 10 is firmly fixed, the electric wires 61, 6
It is also possible to fix 2 without using solder.

D. Bundle of fishing line and fishing hook The composite heat-shrinkable tube 10 can also be used for binding of a fishing line and a fishing hook. FIG. 14 is a partial cross-sectional view showing a case where the composite heat shrinkable tube 10 is used for binding the fishing line 71 and the fishing hook 72. In FIG. 14, since the binding portion 73 between the fishing line 71 and the fishing hook 72 is protected by the composite heat shrink tube 10, the fishing line 71 is prevented from coming off the fishing hook 72. Further, since at least a part of the retainer 74 of the fishing hook 72 and the fishing line 71 are fixed by the composite heat-shrinkable tube 10, the fishing line 71 is prevented from being cut by the retainer 74. In addition, the composite heat shrink tube 1
It is also possible to impart a function of attracting fish by using a fluorescent material for the outer heat shrinkable tube 12.

(Other Embodiments) The embodiment of the present invention is not limited to the above-mentioned embodiment and can be expanded and modified. Extended and modified embodiments are also included in the technical scope of the present invention. (1) For example, the inner heat shrink tube and the outer heat shrink tube may be bonded to each other. For example, an adhesive layer 91 may be interposed between the inner heat shrink tube 11 and the outer heat shrink tube 12 as shown in FIG. 15, or the inner heat shrink tube 11 and the outer heat shrink tube 12 as shown in FIG. There is no problem even if the adhesive portion 92 is provided at the end of the.

(2) The outer heat shrink tube may be removed from the double heat shrink tube after heat shrink. The outer heat-shrinkable tube has two roles: to promote the deformation of the inner heat-shrinkable tube during heat shrinkage and to protect the inner heat-shrinkable tube after heat shrinkage, but in the case where only the former role is required, It can be removed after heat shrinkage.

(3) The composite heat-shrinkable tube 10 may not be double, but may be triple or more. In some cases, a single heat-shrinkable tube may be used instead of the composite heat-shrinkable tube 10. For applications that do not necessarily require strong adhesion, it is possible to use a single tube with either the inner heat-shrink tube or the outer heat-shrink tube instead of the double tube that combines the inner heat-shrink tube and the outer heat-shrink tube. Absent. Specifically, a single heat-shrinkable tube can be used for dyeing. In dyeing, if the tightening of the cloth by the heat shrinkable tube becomes weak, the prevention of dyeing will be incomplete. It is better to make it larger. However, if it is better to reduce this contrast a little by design, a single heat shrink tube with a weak cloth clamping force can be used. Further, by mixing the heat-shrinkable tubes attached to the cloth with one-layer or double-layer, it is possible to adjust the contrast of dyeing between the dyed part and the non-dyed part depending on the location, and it is possible to improve the degree of freedom in design.

[0036]

As described above, according to the present invention, it is possible to provide a composite heat-shrinkable tube having improved adhesion strength to the object to be coated.

[Brief description of drawings]

FIG. 1 is a perspective view and a top view showing the overall configuration of a composite heat-shrinkable tube according to an embodiment of the present invention.

FIG. 2 is a flow chart showing a procedure of dyeing an object to be dyed using the composite heat-shrinkable tube according to the present invention as a mask.

FIG. 3 is a perspective view showing a state of a dyeing target when the dyeing target is dyed using the composite heat-shrinkable tube according to the present invention as a mask.

FIG. 4 is a perspective view showing a state of a dyeing target when the dyeing target is dyed using the composite heat-shrinkable tube according to the present invention as a mask.

FIG. 5 is a perspective view showing a state of a dyeing target when the dyeing target is dyed using the composite heat-shrinkable tube according to the present invention as a mask.

FIG. 6 is a perspective view showing a state of a dyeing target when the dyeing target is dyed using the composite heat-shrinkable tube according to the present invention as a mask.

FIG. 7 is a perspective view showing a state of a dyeing target when the dyeing target is dyed using the composite heat-shrinkable tube according to the present invention.

FIG. 8 is a perspective view showing a state of a dyeing target when the composite heat-shrinkable tube is mounted on the dyeing target using the tube mounting jig 30.

FIG. 9 is a perspective view showing a state of a dyeing target when the composite heat-shrinkable tube is attached to the dyeing target using the tube mounting jig 30.

FIG. 10 is a perspective view showing a state in which strings are bound by using the composite heat-shrinkable tube according to the present invention.

FIG. 11 is a perspective view showing a state in which a button for clothing is temporarily fixed using the composite heat-shrinkable tube according to the present invention.

FIG. 12 is a perspective view showing a state in which the composite heat-shrinkable tube according to the present invention is set with a button for clothes.

FIG. 13 is a partial cross-sectional view showing a state in which a connecting portion of an electric wire is protected by using the composite heat-shrinkable tube according to the present invention.

FIG. 14 is a partial cross-sectional view showing a case where the composite heat-shrinkable tube 10 is used for binding the fishing line and the fishing hook.

FIG. 15 is a perspective view showing a state in which an adhesive layer is interposed between an inner heat shrink tube and an outer heat shrink tube.

FIG. 16 is a perspective view showing a state in which an adhesive portion is provided on the ends of the inner heat shrink tube and the outer heat shrink tube.

[Explanation of symbols]

10 ... Composite heat-shrinkable tube, 11 ... Inner heat-shrinkable tube, 12 ... Outer heat-shrinkable tube, 21 ... Cloth, 23 ... Dyeing solution, 24 ... Container, 26 ... Tightening point, 27 ... Non-tightening point,
28 ... Intermediate region, 30 ... Tube mounting jig, 31 ... Plate-like body, 32 ... Projection, 41, 42 ... String, 51 ... Button, 5
2 ... cloth, 53 ... thread, 61, 62 ... electric wire, 63, 64 ... covering, 65, 66 ... conducting wire, 67 ... connecting part, 71 ... fishing line,
72 ... fishing hook, 73 ... bundling part, 91 ... adhesive layer, 92 ... adhesive part

Front page continuation (51) Int.Cl. ⁷ Identification symbol FI theme code (reference) B29L 23:00 A01K 91/04 AF term (reference) 2B107 AB08 EA01 4F210 AA09 AA33 AA45 AE01 AG03 AG08 AH02 RA03 RC02 RG07 RG34 4H057 AA01 AA02 DA01 EA11 FA17 FA90 GA07 GA33 HA01 JA10 JB01

Claims (14)

[Claims] 1. A resin-based heat-shrinkable tube that shrinks at least in the radial direction by heating, and a rubber-based tube that covers the resin-based heat-shrinkable tube and has a greater tightening force when heated than the resin-based heat-shrinkable tube. And a heat-shrinkable tube. 2. The composite heat-shrinkable tube according to claim 1, wherein the resin-based heat-shrinkable tube has a smaller deformation amount when a stress is applied than the rubber-based heat-shrinkable tube. 3. The composite heat-shrinkable tube according to claim 1, wherein the resin-based heat-shrinkable tube contains at least one of a fluorine-based resin, a polyolefin-based resin, and vinyl chloride. 4. The rubber-based heat-shrinkable tube is made of silicone rubber or EPDM (ethylene propylene rubber).
The composite heat-shrinkable tube according to claim 1, comprising at least one of 5. The composite heat-shrinkable tube according to claim 1, further comprising a connecting portion that connects the resin-based heat-shrinkable tube and the rubber-based heat-shrinkable tube. 6. A composite heat-shrinkable tube for dyeing, which tightens a part of an object to be dyed to inhibit the infiltration of a dye solution, wherein the resin-based heat-shrinkable tube shrinks at least in a radial direction by heating, and A composite heat-shrinkable tube for dyeing, comprising: a heat-shrinkable tube of rubber, which covers the heat-shrinkable tube and has a greater tightening force when heated than the heat-shrinkable tube of resin. 7. A composite including a resin-based heat-shrinkable tube and a rubber-based heat-shrinkable tube that covers the resin-based heat-shrinkable tube and has a greater tightening force when heated than the resin-based heat-shrinkable tube. An attaching step of attaching the heat-shrinkable tube to the dyeing target, a heat-shrinking step of heating and shrinking the composite heat-shrinkable tube attached to the dyeing object in the attaching step, and a composite heat-shrinkable tube shrunk in the heat shrinking step. Immersion step of immersing the dyeing object attached to the dyeing solution, a drying step of drying the dyeing object immersed in the dyeing solution in the immersion step, and a composite heat-shrinkable tube from the dyeing object dried in the drying step. And a removing step of removing the dyeing method. 8. The attaching step includes a step of covering the protrusion with a dyeing object, an inserting step of inserting the dyeing object covering the protrusion in the covering step into the composite heat-shrinkable tube together with the protrusion, and the inserting step. 8. The dyeing method according to claim 7, further comprising a step of separating the protrusion from a dyeing object that is inserted into the heat-shrinkable tube together with the protrusion. 9. A composite heat-shrinkable tube for sewing, for fixing a thread inserted into a button hole of a clothing button, comprising: a resin-based heat-shrinkable tube that shrinks at least in a radial direction by heating; A composite heat-shrinkable tube for sewing, comprising a heat-shrinkable tube of rubber which covers the heat-shrinkable tube and has a larger tightening force when heated than the heat-shrinkable tube of resin. 10. A fishing hook main body, a fishing line, and a resin-based heat-shrinkable tube for connecting the fishing-hook main body and the fishing line, and covering the resin-based heat-shrinkable tube. A fishing hook, comprising: a composite heat-shrinkable tube having a rubber-based heat-shrinkable tube having a large tightening force when heated. 11. The fishing hook according to claim 10, wherein the rubber-based heat-shrinkable tube emits fluorescence. 12. A resin-based heat-shrinkable tube that shrinks at least in a radial direction by heating, and a heat-shrinkable tube that covers the resin-based heat-shrinkable tube, wherein the resin-based heat-shrinkable tube is the rubber. A composite heat-shrinkable tube for protecting an electric wire connecting portion, which has a higher insulation property than a heat-shrinkable tube of a system, and the heat-shrinkable tube of a rubber has a higher tightening force when heated than a heat-shrinkable tube of a resin. 13. A composite comprising a resin-based heat-shrinkable tube and a rubber-based heat-shrinkable tube that covers the resin-based heat-shrinkable tube and has a greater tightening force when heated than the resin-based heat-shrinkable tube. A coating step of coating the heat-shrinkable tube on the connection part of the electric wire, and a shrinking step of heating and shrinking the composite heat-shrinkable tube covering the connection part of the electric wire in the coating step, Electric wire connection point protection method. 14. The method of protecting an electric wire connection point according to claim 13, further comprising a step of removing the rubber-based heat-shrinkable tube from the composite heat-shrinkable tube shrunk in the shrinking step.