JP2016138623A - Synthetic resin tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a tube easily fixed to an article and prevent noises from being generated in association with vibrations between the tube and a peripheral member.SOLUTION: A tube 1 has flexibility, and a fluid can flow through the inside of the tube. At least a part of an outer peripheral surface of the tube 1 is formed as an adhesion part 11 with adhesion. The adhesion part 11 consists of a resin composition predominantly composed of a thermoplastic elastomer and having an Asker C hardness of 1-30. Preferably, the thermoplastic elastomer is a styrene thermoplastic elastomer.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tube made of a synthetic resin excellent in flexibility, and more particularly to a flexible tube made of a synthetic resin capable of flowing a fluid inside the tube.

The tube made of flexible synthetic resin that allows fluid to flow inside the tube is a hollow cylindrical tube that allows liquid such as water and oil or gas such as air to flow inside, so-called rubber. Tubes and tubes made of thermoplastic elastomer are known. These synthetic resin tubes are given flexibility by the softness of the material. And by selecting the tube material appropriately, various properties and requirements required for the tube, for example, synthetic resin with excellent properties such as flex resistance, kink resistance, gas permeation resistance, moisture resistance, chemical resistance, etc. A tube is obtained.

For example, Patent Document 1 discloses a fluid transport tube in which a reinforcing member manufactured from a thermoplastic elastomer composition is attached to a tube obtained by extrusion molding a thermoplastic elastomer composition. It is disclosed that the tube is excellent in bending resistance and has excellent gas permeation resistance, moisture resistance and the like.

JP 2006-195715 A

It has been found that when such a conventional fluid transport tube is used for piping for liquid transport, the following problems occur.

First, when there are various devices and members around the site where such a conventional tube for transporting fluids is piped (hereinafter referred to as “peripheral members”, the devices and members arranged near the piped tubes). Described)), and the vibration of the peripheral member itself and the vibration of the tube may generate noise in which the tube and the peripheral member repeat contact and separation. Such noise (noise called rattle noise, vibration contact noise, etc.) is annoying. Further, when noise due to such contact / separation occurs, the tube or the peripheral member may be worn at the contact point.

In addition, when heating or cooling an article such as a container or sample, a conventional fluid transport tube is fixed in a state of being wrapped around the article, and a high-temperature or low-temperature fluid is allowed to flow through the tube, The inventor tried to heat or cool the article. However, in the conventional fluid transport tube, it is difficult to fix the tube along the article, and the article and the tube are not sufficiently adhered to each other. It has been found that the efficiency of is reduced.

A first problem of the present invention is to prevent noise generated due to vibration between a tube and a peripheral member. The second problem of the present invention is to make it easier to fix the tube to the article.

As a result of intensive studies, the inventor has found that, by providing a pressure-sensitive adhesive portion having at least a part of the outer peripheral surface of the tube with a specific resin composition, at least one of the above problems can be solved, The present invention has been completed.

The present invention is a synthetic resin tube having flexibility and capable of flowing a fluid therein, wherein at least a part of an outer peripheral surface of the tube is an adhesive part having adhesiveness, and the adhesive The part is a synthetic resin tube composed of a resin composition mainly composed of a thermoplastic elastomer and having an Asker C hardness of 1 to 30 (first invention).

In the first invention, the thermoplastic elastomer is preferably a styrenic thermoplastic elastomer (second invention). Furthermore, in the second invention, it is preferable that the adhesive portion is provided continuously over the entire length of the tube (third invention). Furthermore, in the third invention, it is preferable that the tube has a tube wall having a laminated structure over the entire length of the tube, and the entire outer peripheral surface of the outermost layer of the tube wall is an adhesive portion (fourth invention).

Moreover, this invention is a method of preventing the noise which generate | occur | produces with a vibration between the piped tube and the peripheral member arrange | positioned near the tube, Comprising: The synthetic resin product of Claim 1 In this method, a tube is piped, the adhesive portion of the tube is adhered to the peripheral member, the tube is fixed to the peripheral member, and the generation of noise between them is prevented (fifth invention).
The present invention is also a method for heating or cooling an article, wherein the synthetic resin tube according to claim 1 is disposed along the surface of the article, and the adhesive portion of the tube is disposed on the surface of the article. In this method, the tube is fixed to the article, and a fluid having a temperature higher or lower than the temperature of the article is passed through the tube to heat or cool the article (Sixth invention).

According to the synthetic resin tubes of the first to fourth inventions, the tube and other articles can be adhered to each other by utilizing the adhesiveness of the adhesive portion provided on the outer peripheral surface of the tube. When the tube adheres to another article, it is possible to prevent noise generated due to vibration between the peripheral member and the tube, or to easily fix the tube to the other article.

In addition, according to the noise prevention method of the fifth aspect of the invention, it is possible to prevent noise generated due to vibration between the piped tube and the peripheral member disposed near the tube. Moreover, according to the heating method or the cooling method of the sixth invention, the tube can be easily fixed along the article, and the article can be easily heated or cooled.

It is a figure which shows the synthetic resin tube of 1st Embodiment. It is a figure which shows the other embodiment example of a synthetic resin tube. It is a figure which shows the form example which piped the synthetic resin tube of 1st Embodiment near the peripheral member. It is a figure which shows the example of a form which bundled the synthetic resin tube of 1st Embodiment with the other tube. It is a figure which shows the example of a form which wound the synthetic resin tube of 1st Embodiment around the container, and was fixed. It is a figure which shows the example of a form which wound the synthetic resin tube of 1st Embodiment around the articles | goods, and was fixed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking as an example a flexible synthetic resin tube used for piping of physics and chemistry equipment. In addition, this invention is not limited to the separate embodiment shown below, The form can also be changed and implemented. Moreover, the use of the tube is not particularly limited.

In FIG. 1, the external appearance of the synthetic resin tube 1 of 1st Embodiment is shown. The tube 1 is formed in a hollow cylindrical shape from a resin composition mainly composed of a thermoplastic elastomer, and has flexibility. The tube 1 can flow a fluid therein. The tube 1 can be used for an application for sending a liquid or a gas or an application for transmitting the pressure of a liquid or a gas.

An outer peripheral surface of the tube 1 is an adhesive portion 11 having adhesiveness. The adhesive portion may be a part of the outer peripheral surface of the tube as in other embodiments described later. In the tube 1 of the present embodiment, the entire outer peripheral surface of the tube is an adhesive portion 11.

The resin composition which comprises the adhesion part 11 is demonstrated. The adhesive part is composed of a resin composition mainly composed of a thermoplastic elastomer. The thermoplastic elastomer component in the resin composition is preferably 50% by weight or more. In addition to the main thermoplastic elastomer, other resin materials, rubber materials, and elastomer components may be included in the resin composition, and various additives such as reinforcing materials, tackifiers, and softeners may be included. May be. As the thermoplastic elastomer which is the main component of the resin composition, a styrene thermoplastic elastomer is particularly preferable. The resin composition has an Asker C hardness of 1 to 30. The hardness of the resin composition is more preferably 5 to 25 as Asker C hardness. Here, the Asker C hardness is a hardness measured using a spring type hardness tester Asker C type according to SRIS 0101 (Japan Rubber Association Standard) and JIS 6050.

The resin composition constituting the adhesive part has adhesiveness. Due to this adhesiveness, the surface of the adhesive portion 11 of the tube 1 adheres to another object. A resin composition having an Asker C hardness of 1 to 30 mainly composed of a styrene-based thermoplastic elastomer exhibits particularly good adhesiveness and is suitable as a constituent material of the adhesive portion.

An example of a thermoplastic elastomer composition that can form an adhesive portion and has adhesiveness and an Asker C hardness of 1 to 30 is Arneston (registered trademark) JS20N manufactured by Kuraray Plastics Co., Ltd. The

In the tube 1 of 1st Embodiment, the whole tube is comprised with the resin composition which comprises an adhesion part. Moreover, the tube 1 is comprised with the resin composition which has mainly the styrene-type thermoplastic elastomer which has adhesiveness. Such a tube 1 can be manufactured by extrusion molding in which the resin composition is extruded in a semi-molten state into a cylindrical shape and then cooled.

The specific configuration of the tube and the way of providing the adhesive portion can be changed.
For example, like the synthetic resin tube 2 of the second embodiment shown in FIG. 2A, the tube wall of the tube 2 is formed in a laminated structure of an inner layer 22 and an outer layer 21, and the outer layer 21 is made of the above-mentioned adhesive resin composition. The outer layer 21 of the tube 2, that is, the entire outer peripheral surface may be configured as the adhesive portion 21 a. In this case, the material of the inner layer 22 may be another elastomer material or a rubber material. Further, the inner layer 22 need not be tacky. The laminated structure of the tube wall may be three or more layers. In that case, the resin composition constituting the outermost layer may be given adhesiveness and the entire outer peripheral surface of the tube may be used as the adhesive part.

In the tubes 1 and 2 of the above embodiment, the entire outer peripheral surface of the tube is an adhesive portion, but the entire outer peripheral surface is not necessarily an adhesive portion, and at least a part of the adhesive portion is provided on the outer peripheral surface of the tube. Should just be provided.
For example, like the synthetic resin tube 3 of the third embodiment shown in FIG. 2B, the adhesive portion 31 is continuously formed on the outer peripheral surface of the tube 3 along the entire length of the tube 3 along the longitudinal direction of the tube 3. 31 may be provided. Such a tube 3 can also be manufactured by applying extrusion molding. If the adhesive portion is provided continuously over the entire length of the tube, it is preferable in terms of ease of fixing the tube because adhesiveness can be obtained at any location in the length direction of the tube.

Or the adhesion parts 41 and 41 may be intermittently provided in the outer peripheral surface of the tube 4 like the synthetic resin tube 4 of 4th Embodiment shown in FIG.2 (c). Non-adhesive portions 42 and 42 are intermittently provided between the adhesive portions. It is preferable that the adhesive portions 41 and 41 and the non-adhesive portions 42 and 42 are alternately and repeatedly provided over the entire length of the tube 4, and in this case, when the tube is cut to an arbitrary length In addition, the adhesive portions 41 and 41 can be scattered on the outer peripheral surface of the tube.

Moreover, like the synthetic resin tube 5 of 5th Embodiment shown in FIG.2 (d), you may provide the helical adhesion parts 51 and 51 continuously over the full length of the tube 5 in the tube outer peripheral surface. Non-adhesive portions 52 and 52 are provided in a spiral shape between the adhesive portions 51 and 51. If the adhesive part is spiral, the adhesive part is intermittently seen both in the length direction and in the circumferential direction while reducing the area of the adhesive part and saving the material of the adhesive part. Being arranged, it becomes easy to fix the tube to other objects.

Hereinafter, the effect of the synthetic resin tube provided with the adhesive portion and the utilization method thereof will be described. The tube of the said embodiment adheres to the surface of another article | item by the adhesiveness which the adhesion part provided in the tube outer peripheral surface has. By using this adhesiveness, the following convenient usage can be performed.

For example, generation of noise can be prevented by the synthetic resin tube 1 of the first embodiment. FIG. 3 shows a state in which the synthetic resin tube 1 of the first embodiment is connected to the pipe joints 71 and 72 constituting a series of pipelines. The liquid supplied from the upstream side of the pipe joint 71 is sent to the downstream side of the pipe joint 72 through the tube 1. A peripheral member 70 is disposed near the path through which the tube 1 is piped. The peripheral member is, for example, a measuring device, a prime mover, a pump, a motor, a frame, a container, a case, or a cover.

When the adhesive portion on the outer peripheral surface of the tube 1 is adhered to the surface of the peripheral member 70 and the tube 1 is fixed to the peripheral member 70, generation of noise between the tube 1 and the peripheral member 70 can be prevented. In the conventional tube, if the tube and the peripheral member interfere between the piped tube and the peripheral member arranged near the tube, both are not fixed. Contact / detachment is repeated, and noise (billing noise, rattle noise, vibration contact noise) is generated with vibration. In the tube 1 of the above embodiment, the adhesive portion 11 provided on the outer peripheral surface of the tube 1 adheres to and is fixed to the peripheral member 70, so that even if vibration is applied, both do not repeat contact and separation. Noise generation is prevented.

In order to more reliably prevent the generation of noise due to vibration, it is preferable that the tube 1 is adhered and fixed to the peripheral member 70 over a predetermined length as shown as section A in FIG. The section A is preferably secured at least 3 times the diameter of the tube 1, particularly preferably at least 7 times the diameter of the tube 1.

FIG. 4 shows an example of another usage pattern. In this embodiment, the usage example which bundles and connects the tube 1 of 1st Embodiment and the conventional tubes 77 and 78 is shown. The tube 1 of the first embodiment is piped between the pipe joints 71 and 72 to allow fluid to flow from the pipe joint 71 to the pipe joint 72. The tube 77 is piped between the pipe joints 73 and 74 to allow fluid to flow from the pipe joint 73 to the pipe joint 74. The tube 78 is piped between the pipe joints 75 and 76 to allow fluid to flow from the pipe joint 75 to the pipe joint 76.

Tubes 1, 77, and 78 that are respectively piped are bundled by using the adhesiveness of the adhesive portion of tube 1 at an intermediate portion (shown as section B in the drawing). That is, in the section B, the outer peripheral surfaces of the tube 77 and the tube 78 are adhered to the adhesive portion on the outer peripheral surface of the tube 1, and these tubes are bundled and fixed to each other. Thereby, it is possible to bundle and arrange the tubes while saving or omitting the fixing member and the binding member, and the piping of the tube can be cleaned. Further, if the tubes are bonded and bundled, it is difficult to deform the bundle of tubes, so that the piping route of the bundle of tubes can be easily determined and the tube can be easily managed.

Also in this form of use, it is possible to prevent the tubes from coming into contact and leaving due to vibration and generating noise.

Moreover, in this usage form, since it arrange | positions mutually closely in the area B where the piped tubes are bundled, the heat exchange between the fluid which flows through each tube can also be performed. For example, the fluid flowing through the tube 1 can be warmed by flowing a high-temperature fluid through the tubes 77 and 78.

In the usage pattern as shown in FIG. 4, it is particularly preferable to use the tube 1 of the first embodiment, the tube 2 of the second embodiment, or the tube 5 of the fifth embodiment so that the tubes can be easily assembled. In addition, the tube group can be bundled well together if the number and ratio of the conventional tubes (77, 78) included in the tube group to be bundled are smaller. In particular, it is preferable to use all the tubes as the tube having the adhesive portion of the above embodiment (for example, the tube 1 of the first embodiment).

5 and 6 show still another usage pattern.
In the usage form of FIG. 5, the tube 1 of the above embodiment is wound around and fixed to the container 8, and the liquid in the container 8 or the container 8 is heated by flowing a high-temperature fluid inside the tube 1. it can. In FIGS. 5 and 6, the supply / discharge of the fluid is indicated by arrows. Conversely, by flowing a low-temperature fluid through the tube 1, the liquid in the container 8 or the container 8 can be cooled. Here, high temperature / low temperature means whether the temperature of the container or the liquid in the container is high or low.

The tube 1 is fixed to the container 8 by utilizing the adhesiveness of the adhesive portion of the tube 1 and the tube is easily fixed. In addition, since the tube 1 and the container are fixed using adhesiveness, they are in close contact with each other, and heating and cooling can be performed efficiently. If it arrange | positions so that the tube 1 may be wound along the outer peripheral surface of the container 8, it will become easy to fix a tube especially. You may arrange | position the tube so that a tube may adhere | attach spirally along the inner peripheral surface of the container 8. FIG. In addition, when the container is shaped like a square tube, such as a flat part and a corner / corner part, the tube 1 is arranged so as to meander on one plane of the container and adhered. It may be fixed.

As shown in FIG. 6, when the article to be heated / cooled is solid, the tube 1 may be directly wound around the article 81 and fixed. The tube 1 is wound around the outer peripheral surface of the article 81 using the flexibility of the tube 1, and the tube 1 is fixed to the article 81 using the adhesiveness of the adhesive portion of the tube 1. Then, the article 81 can be heated or cooled by passing a fluid having a temperature higher or lower than the temperature of the article 81 through the tube 1. When the tube 1 is used for heating and cooling applications, the tube 1 can be fixed in a state where it is placed in close contact with not only a container but also various shaped articles, and heating and cooling are efficient.

In the above usage pattern, it is preferable that the tube is fixed firmly. For that purpose, it is preferable that the adhesive part of the tube 1 has high adhesiveness. The adhesive strength of the adhesive portion is such that, for example, when the tube 1 is adhered and adhered to a smooth surface extending in the vertical direction so as to extend in a substantially horizontal direction, the tube does not fall under its own weight. It is preferable that the adhesive strength is such that it stays in a close contact position. Further, it is more preferable that the tube has an adhesive force enough to prevent the tube from dropping due to its own weight even when the fluid to be passed through the tube is filled. Also, even when the tube is closely placed and adhered on a smooth surface extending in a substantially horizontal direction, and then the smooth surface is turned upside down so that the tube comes under the smooth surface so that it is substantially horizontal, It is particularly preferable that the tube has an adhesive force enough to stay in a close contact position without dropping due to its own weight.

In the above usage pattern, if the adhesive strength of the adhesive section of the tube is too strong, the handleability of the tube may be deteriorated. It is preferable that the adhesive strength is such that it can be performed without damaging the members (peripheral members, articles such as containers).

Moreover, about the fixation of the tube in the said usage form, the auxiliary means for fixation may be used. Examples of the auxiliary means include a groove serving as a tube guide, a cover, a clip, and a string.

Moreover, an identification label can also be easily attached with respect to the tube of the said embodiment. As the identification label, paper or film can be used. When the identification label is adhered to the adhesive portion of the tube, the identification label can be fixed to the tube. In order to ensure the fixation of the identification label, it is preferable that the identification label is adhered and fixed so as to be wound around the adhesive portion of the tube.

In addition, in the tubes 1, 2, 3, 4, and 5 of the above-described embodiment, all the tubes have a hollow cylindrical shape, but the specific shape of the tube can be changed. In particular, when a tube for use in heating or cooling is used, it is also preferable that the cross-sectional shape of the tube is an ellipse, a rectangle, a D-shape, etc. so as to improve the contact with the target article. is there.

The synthetic resin tube of the above-described embodiment can be used for an application of flowing fluid, and can be fixed to surrounding articles using the adhesiveness of the adhesive portion, and has high industrial utility value.

DESCRIPTION OF SYMBOLS 1 Synthetic resin tube 11 Adhesive part 2,3,4,5 Synthetic resin tubes 21a, 31, 41, 51 Adhesive part 21 Outer layer 22 Inner layer 42, 52 Non-adhesive part 70 Peripheral members 71, 72, 73, 74, 75 , 76 Pipe joint 77,78 Tube 8 Container 81 Article

Claims (6)

A synthetic resin tube having flexibility and allowing fluid to flow inside,
At least a part of the outer peripheral surface of the tube is an adhesive part having adhesiveness,
A synthetic resin tube in which the adhesive portion is composed of a resin composition mainly composed of a thermoplastic elastomer and having an Asker C hardness of 1 to 30. The synthetic resin tube according to claim 1, wherein the thermoplastic elastomer is a styrene-based thermoplastic elastomer. The synthetic resin tube according to claim 2, wherein the adhesive portion is provided continuously over the entire length of the tube. The synthetic resin tube according to claim 3, wherein the tube has a tube wall having a laminated structure over the entire length of the tube, and the entire outer peripheral surface of the outermost layer of the tube wall is an adhesive portion. A method of preventing noise generated due to vibration between a piped tube and a peripheral member arranged near the tube,
A method of piping the synthetic resin tube according to claim 1, adhering an adhesive portion of the tube to the peripheral member, fixing the tube to the peripheral member, and preventing generation of noise between the two. . A method of heating or cooling an article, comprising:
The synthetic resin tube according to claim 1 is disposed along the surface of the article, the adhesive portion of the tube is adhered to the surface of the article, and the tube is fixed to the article.
A method of heating or cooling an article by passing a fluid having a temperature higher or lower than the temperature of the article through the tube.

Images