JP2011233294A - Insulation coating superconducting wire and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation coating superconducting wire having high reliability and a method of manufacturing an insulation coating superconducting wire having a long length and high reliability.SOLUTION: In an insulating coating superconducting wire in which an insulating layer coated on the whole periphery of a flat-square superconducting wire is formed of resin tape, the resin tape is adhesively attached to the superconducting wire through an adhesive layer provided to at least one surface of the resin tape. The resin tape covers the superconductive wire while longitudinally attached to the superconductive wire, thereby forming the insulating layer.

Description

  The present invention relates to an insulation-coated superconducting wire in which an insulating layer covering a flat superconducting wire is formed of a resin tape, and a method for manufacturing the same.

  Conventionally, when a superconducting wire is used for a transformer or a motor, an insulation layer is formed on the outer surface of the superconducting wire to ensure insulation between the wires. A superconducting coil is formed with an insulating coated superconducting wire having a layer.

  As this superconducting wire, a metal compound type or an oxide type is known, and as the oxide type superconducting wire, a yttrium type or bismuth type which is a high temperature superconductor is particularly known. ing. These oxide-based superconducting wires can be used to operate superconducting equipment with inexpensive liquid nitrogen, and therefore can be expected to have high running cost merit. Among them, yttrium-based superconducting wires are critical in the magnetic field at liquid nitrogen temperature. In recent years, active application studies have been made because of the large current.

The bismuth-based superconducting wire is fired as a RESr ₂ Ca ₂ Ba ₂ Cu ₃ O _x (RE: rare earth element) type copper oxide, but by adopting a silver alloy or the like as the block layer, It is known that mass production technology has been established by Sumitomo Electric Industries, Ltd. as being easy to make long tapes.
On the other hand, the yttrium-based superconducting wire is a general term for a REBa ₂ Cu ₃ O _x (RE: rare earth element) type copper oxide superconductor deposited on a tape-like metal substrate (called Hastelloy). It is named after YBa ₂ Cu ₃ O _x (YBCO), which was first found to be usable in such a manner.
As described above, the copper oxide superconducting wire is in the form of a long tape, and is usually formed in a thin rectangular shape (ribbon shape) having a width of several mm to several tens of mm.

  Regarding the insulation coated superconducting wire having the tape-shaped copper oxide superconducting wire as a conductor, for example, the following Non-Patent Document 1 describes that an insulating layer is formed on a yttrium superconducting wire with a polyimide tape. It is described that an insulating layer covering the entire circumference of the yttrium-based superconducting wire is formed by wrapping the tape (see the last line of chapter 2.3 “Stabilizing layer and insulating process” and FIG. 9). .

Fujikura Technical Review No. 113 “Superconducting Magnet” Hiroshi Fuji and others

By the way, it is known that the superconducting wire greatly changes the electric resistance even by a slight temperature change, and the insulation-coated superconducting wire is required not to cause a temperature change as much as possible.
As described above, conventionally, an insulating layer is formed by wrapping a resin tape around a rectangular superconducting wire, and of course, at this time, a part of the width direction of the resin tape is naturally changed. Since the resin tape is wound on the previously wound resin tape, many steps that run obliquely with respect to the length direction of the superconducting wire are formed at a narrow pitch.

If a magnetic field is generated by energizing a superconducting coil, the insulation-coated superconducting wire forming the superconducting coil may vibrate in its length direction. In such a situation, the insulating tape is wrapped with a resin tape. When the coated superconducting wire is used, the insulating coated superconducting wires or the insulating coated superconducting wire and other members rub against each other, and local frictional heat is likely to be generated particularly at the step.
In addition to this, even when vibration occurs, the frictional heat is likely to be generated in the stepped portion, and the conventional insulation coated superconducting wire has a risk of causing an unexpected characteristic change. It is hard to say that sufficient reliability is ensured.

In general, when a resin tape is used, if the length of the resin tape is less than the required length, the required length is ensured by providing a joint portion with a new resin tape and a butt joint. Things have been done.
However, since this joint part is generally inferior in strength and insulation properties to other parts, the resin tape provided with the joint part is not suitable as a member for forming the insulating layer of the insulation coated superconducting wire. It is.
On the other hand, when the insulating layer is formed by wrapping the resin tape, the section where the insulating layer is obtained with a single resin tape without a joint is usually longer than the length of the resin tape. Since it becomes considerably short, the conventional method for manufacturing an insulation-coated superconducting wire has a problem that it is difficult to obtain an insulation-coated superconducting wire that is long but highly reliable.

  The present invention has been made in view of the above-described problems, and provides a highly reliable insulation-coated superconducting wire, and can produce an insulation-coated superconducting wire that is long but highly reliable. It is an object of the present invention to provide a method for manufacturing an insulating coated superconducting wire.

  The present invention relating to an insulation-coated superconducting wire for solving the above-mentioned problems is an insulation-coated superconducting wire in which an insulating layer covering the entire circumference of a flat-shaped superconducting wire is formed of a resin tape, It is bonded to the superconducting wire through an adhesive layer provided on at least one surface thereof, and the insulating layer is formed so as to cover the superconducting wire in a vertically attached state.

  Further, the present invention relating to a method for manufacturing an insulation-coated superconducting wire is a method for manufacturing an insulation-coated superconducting wire that produces an insulation-coated superconducting wire in which an insulating layer covering the entire circumference of a flat superconducting wire is formed of a resin tape. A resin tape provided with an adhesive layer on at least one side is vertically attached to the superconducting wire, and the adhesive layer is adhered to the superconducting wire so that the resin tape covers the superconducting wire. An insulating layer is formed.

In the insulating coated superconducting wire of the present invention, since the insulating layer is formed with the resin tape vertically attached, the overlap of the resin tape is formed along the length direction of the insulating coated superconducting wire. Thus, the formation of a plurality of steps in the oblique direction can be suppressed.
Therefore, it is difficult to generate local frictional heat due to vibration or the like as compared with the conventional insulation coated superconducting wire in which many steps in the oblique direction are formed.
In addition, since the resin tape is bonded to the superconducting wire through the adhesive layer, there is a low possibility that the superconducting wire is exposed away from the surface of the superconducting wire while being in a vertically attached state.
Furthermore, since the resin tape is vertically attached, an insulation coated superconducting wire corresponding to the length of the resin tape can be manufactured without providing a joint portion on the resin tape.

  That is, according to the present invention, a highly reliable insulating coated superconducting wire can be provided, and a method of manufacturing an insulating coated superconducting wire capable of manufacturing an insulating coated superconducting wire that is long but highly reliable can be provided.

Sectional drawing which shows the resin tape (adhesive tape) provided with the adhesive bond layer. The perspective view which shows the insulation coating superconducting wire of this embodiment. Sectional drawing which showed typically a mode that a superconducting wire was coat | covered with an adhesive tape. Sectional drawing which showed typically a mode that a superconducting wire was coat | covered with two adhesive tapes. Sectional drawing which showed typically the other form which coat | covers a superconducting wire with a some adhesive tape.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The insulation-coated superconducting wire according to the present embodiment is composed of a rectangular superconducting wire and an insulating layer covering the entire circumference of the superconducting wire, and FIG. 1 is a resin tape provided with an adhesive layer. It is a figure which shows the cross section of an adhesive tape.
As shown also in this figure, the adhesive tape 10 according to this embodiment is one in which an adhesive layer 12 is provided on one surface of a resin tape layer 11.

Further, as shown in the perspective view of FIG. 2, the insulating coated superconducting wire of this embodiment has an insulating layer formed by the adhesive tape 10 (resin tape layer 11) covering the superconducting wire 20, and the insulating layer As shown in FIG. 3, the adhesive tape 10 is wound around the superconducting wire 20 so as to cover the entire circumference of the superconducting wire 20.
That is, the insulation-coated superconducting wire 1 is entirely covered with the adhesive tape 10 so that the internal superconducting wire 20 is not exposed to the surface, and the adhesive tape 10 provides excellent insulation. It is what.

Although not shown in detail in FIGS. 2 and 3, the adhesive tape 10 is covered with the superconducting wire 20 with the adhesive layer 12 inside, and the adhesive layer 12 is covered with the superconducting material. It coat | covers in the state made to adhere to the outer peripheral surface of the wire 20. FIG.
Further, as can be seen from FIGS. 2 and 3, in the insulation coated superconducting wire 1 according to the present embodiment, the adhesive tape 10 is vertically attached to the superconducting wire 20, and from the circumference of the superconducting wire 20. Also, the entire circumference of the superconducting wire 20 is covered with a wide adhesive tape 10.
Accordingly, an overlapping portion 10c in which the adhesive tape 10 is doubled is formed between the one side edge 10a and the other side edge 10b of the adhesive tape 10.

  In this overlapping portion 10c, an insulating layer thicker than the other portions by the thickness of the resin tape layer 11 is formed, and steps corresponding to the thickness of the adhesive tape 10 are formed at the left and right ends thereof. Since this step is formed along the length direction of the insulation-coated superconducting wire 1, there is a low possibility of generating local frictional heat as compared with the conventional insulation-coated superconducting wire in which the resin tape is wrapped.

In addition, since the insulating coated superconducting wire 1 according to the present embodiment is used with the adhesive tape 10 attached vertically, an insulating layer can be formed over a section equal to the length of the adhesive tape 10.
For example, when wrapping a resin tape, depending on the width of the resin tape used, if an insulating layer is formed by half-wrapping a resin tape having the same width as the superconducting wire (half-wrap) The insulation layer can be formed only in the section of the length of about 1/4 of the resin tape, and when the insulation of the section longer than that is necessary, it is necessary to jointly use a new resin tape. Occurs.
Therefore, in the present embodiment, when an insulating layer having the same length as the insulating layer formed by vertically attaching the adhesive tape 10 is formed by wrap winding as described above, three joint portions are formed therebetween. It will be.

  On the other hand, if the tape width is widened, the joint portion can be reduced. For example, if a resin tape that is four times as wide as the superconducting wire is wrapped in half, insulation over a section approximately equal to the length of the resin tape is achieved. Although the layer can be formed without providing a joint portion, when such a wide resin tape is used, the winding pitch becomes coarse, and therefore, collapse is likely to occur, and as a result, the insulation reliability may be reduced.

  On the other hand, since the insulating coated superconducting wire 1 according to the present embodiment is adhered to the surface of the superconducting wire 20 by the adhesive layer 12, the adhesive tape 10 is connected to the superconducting wire 20 while being a simple covering method of “vertical attachment”. In such a configuration, the superconducting wire 20 is not exposed to the surface of the insulating coated superconducting wire 1 and is unlikely to occur.

  In the present embodiment, the superconducting wire 20 is formed in a long shape in that it is easy to form a highly reliable insulating layer over a continuous long section by attaching the adhesive tape 10 vertically. Although it is preferable to employ an easy yttrium-based superconducting wire, the insulation-coated superconducting wire according to the present invention is not limited to the yttrium-based superconducting wire as the conductor, and other bismuth-based superconducting wires, etc. The copper oxide superconducting wire may be a metal compound-based superconducting wire.

  The width and thickness of the superconducting wire 20 are not particularly limited. For example, a wire having a width of 3 mm to 15 mm and a thickness of 0.15 mm to 0.3 mm can be employed.

For the resin tape layer 11, polyimide resin (PI) tape, polyamide resin (PA) tape, polyamideimide resin (PAI) tape, polyetherimide resin (PEI) tape, polyphenylene sulfide resin (PPS) tape, polyethylene terephthalate Resin (PET) tape, Polyethylene naphthalate resin (PEN) tape, Polybutylene naphthalate resin (PBT) tape, Polyethersulfone resin (PES) tape, Polyphenylsulfone resin (PPSF) tape, Polyetheretherketone resin So-called engineering plastics such as (PEEK) tape, polyarylate resin (PAR) tape, polyphenylene ether resin (PPE) tape, wholly aromatic polyester resin (liquid crystal polymer: LCP) It can be constructed by using various resin tape called click.
In addition, as the above resin tape, the surface used as the adhesive interface with the adhesive bond layer 12 may be subjected to surface treatment such as plasma treatment, blast treatment, and primer treatment.

Furthermore, the adhesive layer 12 that constitutes the adhesive tape 10 together with the resin tape layer 11 is not particularly limited to the adhesive used for the formation thereof. For example, a general pressure-sensitive adhesive (adhesive), It can be constituted by a reactive adhesive, a hot melt adhesive, or the like.
For example, if it is a pressure sensitive adhesive, an acrylic type, a rubber type, and a silicone type will be mentioned, and if it is a reactive adhesive, an epoxy resin type thermosetting adhesive etc. will be mentioned.
Furthermore, about a hot-melt-adhesive, a polyester-type adhesive agent etc. are mentioned, for example.

Among them, as a material for forming the resin tape layer 11, polyimide resin, polyamideimide resin, polyetherimide resin, and the like are excellent in heat resistance and insulation, and cracks due to mechanical stress in a cryogenic environment. It is hard to enter and is suitable.
In addition, these resins are preferable from the viewpoint of flame retardancy and the like required for electrical equipment.

As an adhesive used for forming the adhesive layer 12, in consideration of long-term use as a superconducting device, durability (antioxidation degradation) as a composition that is in direct contact with the wire is necessary, and it is possible to prevent metal. Rust must also be considered.
In addition, on the production method with vertical attachment, it is easy to adjust the initial adhesive force so that it can be adhered at room temperature, and from the point that it is easy to obtain stronger adhesion if it has reactivity, an epoxy resin adhesive, A polyester resin adhesive, an acrylic pressure-sensitive adhesive or the like can be preferably employed as the adhesive.

The thickness of the resin tape layer 11 and the adhesive layer 12 in the adhesive tape 10 is not particularly limited, and can be appropriately selected depending on the thickness and width of the superconducting wire 20. In the case of using a copper oxide superconducting wire having a size as described above (3 to 15 mm width, 0.15 to 0.3 mm thickness), the adhesive layer 12 has a thickness of the copper oxide. It is preferable that the thickness of the superconducting wire is such that the minute irregularities on the surface of the superconducting wire are absorbed to completely fill the concave portions.
On the other hand, if the thickness of the adhesive layer 12 is excessively increased, the thickness of the entire adhesive tape is also increased, and assuming that a superconducting coil is produced with an insulation-coated superconducting wire, the line area ratio may be lowered.
For this reason, the adhesive layer 12 is preferably as thin as possible in such a thickness that no gap is formed between the resin tape layer 11 and the copper oxide superconducting wire. Is preferably 1 μm to 10 μm.
The resin tape layer 11 is the same in that it is preferable to reduce the thickness. However, the adhesive tape 10 is usually required to have an insulation reliability of at least 1 kV or more of an actual measured breakdown voltage. Therefore, the thickness of the resin tape layer 11 is preferably 5 μm to 25 μm.

The insulation-coated superconducting wire 1 as described above can be manufactured through steps as shown in FIG.
That is, the superconducting wire 20 and the adhesive tape 10 wider than the circumference of the superconducting wire 20 are arranged in a state in which the length direction is aligned, and the adhesive layer 12 of the adhesive tape 10 and one surface of the superconducting wire 20 are arranged. A step of disposing the superconducting wire 20 and the adhesive tape 10 so as to oppose each other in the widthwise central portion of the adhesive tape 10, and bonding the one surface 20a of the superconducting wire 20 to the adhesive tape 10 (step 1), A step of winding one side edge 10a of the adhesive tape 10 extending from the bonding region with the superconducting wire 20 to both sides in the width direction from the side surface portion of the superconducting wire 20 to the other surface 20b and bonding (step 2); The other side edge 10b side of the adhesive tape 10 is wound around the other side surface 20b from the other side surface portion of the superconducting wire 20, and is bonded in the previous step. Adhering the other side edge 10b of the adhesive tape 10 so as to cover the one side edge 10a of the adhesive tape 10 already bonded to the other surface 20b of the conductive wire 20, the outer periphery of the superconducting wire 20 is bonded to the outer periphery more than once. By carrying out the step of covering with 10 (step 3), the entire circumference of the superconducting wire 20 is covered with the resin tape constituting the adhesive tape 10, and the insulating layer is formed with the resin tape.

As described above, by adopting such a manufacturing method, it is possible to form an insulating layer in a section corresponding to the length of the adhesive tape 10 without providing a joint portion. Although a step parallel to the direction is formed, a step extending in a direction crossing the length direction is not formed, and therefore, a highly reliable insulation-coated superconducting wire that does not easily generate local frictional heat can be manufactured. .
In addition, when the width of the superconducting wire 20 is W, the thickness is T, and the circumferential length is R (= 2W + 2T), by using the adhesive tape 10 having a width close to “R + W”, one side of the adhesive tape 10 The overlapping edge 10c can be formed over the entire width of the insulating coated superconducting wire 1 by positioning the edge 10a and the other side edge 10b at both ends in the width direction of the insulating coated superconducting wire 1, and there is substantially a step. The situation can be similar to not doing.
Further, when the width of the adhesive tape 10 is set to “R + 0.5 W” or more and “R + W” or less, a superconducting coil is formed by superimposing the insulating coated superconducting wires 1 on the upper and lower sides. A wide overlapping portion 10c formed on the lower insulating covering superconducting wire can be brought into contact with the back surface of the insulating covering superconducting wire, and the width of the overlapping portion 10c is 50% or more of the width of the insulating covering superconducting wire 1. Therefore, the upper and lower laminated states can be stabilized.

  In addition, in the said embodiment, although the case where the insulating layer which covers the perimeter of the superconducting wire 20 is formed using one adhesive tape 10 wider than the circumference of the superconducting wire 20 is illustrated, for example, It is also possible to form the insulating layer using a plurality of adhesive tapes whose combined width is longer than the peripheral length of the superconducting wire 20.

An example of using the plurality of adhesive tapes will be described with reference to FIG.
FIG. 4 is a cross-sectional view schematically showing a state in which the superconducting wire is covered with the adhesive tape as in FIG. 3, and the two adhesive tapes 10 ′ having a width slightly more than half the circumference of the superconducting wire 20 are shown. , 10 ″ are added vertically to cover the superconducting wire 20 to form an insulating layer.
The two adhesive tapes 10 ′ and 10 ″ have a structure in which adhesive layers 12 ′ and 12 ″ are laminated on one side of the resin tape layers 11 ′ and 11 ″, respectively, and the width of the superconducting wire 20 is W, When the thickness is T, both have a width corresponding to “2W + T”.

In the method of manufacturing the insulation-coated superconducting wire 1 shown in FIG. 4, one of the two adhesive tapes 10 ′ and 10 ″ is adhered from the one surface 20a side of the superconducting wire 20 while the other Bonding the adhesive tape 10 "from the other surface 20b side of the superconducting wire 20 (step x) and superimposing the two ends of the two adhesive tapes 10 ', 10" in the width direction with each other. Forming the insulating layer covering the entire circumference (step y).
In step x, one side 10 ′ of the two adhesive tapes 10 ′, 10 ″ is adhered to one side 20a of the superconducting wire 20 along one side edge 20x of the superconducting wire 20. At the same time, the other adhesive tape 10 ″ is adhered to the other surface 20 b along the other side edge 20 y of the superconducting wire 20.
As a result, each of the two adhesive tapes 10 ′ and 10 ″ extends from the adhesive surface with the superconducting wire 20 in the width direction with a length of “W + T”.
Therefore, in the subsequent step y, when one adhesive tape 10 ′ is bonded to the back side of the other adhesive tape 10 ″ bonded to the other surface 20b of the superconducting wire 20, the edge thereof is superconducting wire. 20 can be disposed at a position corresponding to the other side edge 20y.
Similarly, when the other adhesive tape 10 ″ is bonded to the back side of one adhesive tape 10 ′ bonded to one surface 20 a of the superconducting wire 20, the edge thereof is the one side edge 20 x of the superconducting wire 20. Can be placed at a position corresponding to.

  That is, by making the two adhesive tapes 10 'and 10 "both have a width corresponding to" 2W + T ", an insulating layer made of a double adhesive tape is formed on both surfaces of the insulation coated superconducting wire 1, and a step is formed. The situation can be similar to the case where is substantially absent.

Furthermore, it is possible to form an insulating layer by valuation as shown in FIG.
In FIG. 5, the adhesive layer is formed on the inner surface facing the superconducting wire 20, but various examples will be described without attaching symbols for the adhesive layer and the resin tape layer. To do.

For example, in 1) of FIG. 5, one of the two adhesive tapes having a width of “W + 2T” or more and a circumference (R) of the superconducting wire 20 is first bonded from one surface side of the superconducting wire 20. In addition, after the both end portions are adhered to the other surface side of the superconducting wire 20, the other adhesive tape is not covered with the one adhesive tape and the superconducting wire 20 is exposed. Adhering from the surface side, both ends thereof are adhered to the one surface side of the superconducting wire 20 in the same manner as the one adhesive tape, thereby forming an insulating layer.
In such an embodiment, it is difficult to bond two adhesive tapes at the same time as in the embodiment illustrated in FIG. 4, but it is difficult to simplify the process, but the resin tape has an adhesive layer on substantially the entire circumference of the superconducting wire 20. Thus, the two layers are bonded to each other, and high insulation reliability can be obtained.

In addition, as shown in 2) and 3) of FIG. 5, the tape width of the adhesive tape to be bonded later in 1) of FIG. 5 is set to be approximately equal to the width (W) of the superconducting wire 20, and the one adhesive tape The superconducting wire 20 can be simply adhered to the other surface side where the superconducting wire 20 is exposed without being covered with.
In this case, it is difficult to obtain high insulation reliability as much as the mode shown in 1) of FIG. 5, but the material to be used can be saved, and the adhesive tape to be bonded later is only attached to a flat surface. Therefore, the process can be simplified because the both ends are not wound.
In addition, in the case where a superconducting coil is formed by overlapping the two insulating tapes on both side edges of the insulating coated superconducting wire and overlapping the insulating coated superconducting wires vertically, Can be stabilized.

Furthermore, as shown in 4) of FIG. 5, two adhesive tapes whose combined width is less than the circumferential length (R) are bonded so as to cover the side edge of the superconducting wire 20, and the superconducting wire 20 A mode in which an adhesive tape having a width (W) or less of the superconducting wire 20 is applied along the exposed portions on both sides of the wire and the exposed portions are closed can also be adopted in the method for manufacturing an insulation-coated superconducting wire of the present invention. It is.
In this case, although four adhesive tapes are required, there is a merit that it is easy to ensure high insulation in that a double covering structure is formed by resin tape (adhesive tape) on both sides of the insulation coated superconducting wire. Have.
Further, the embodiment shown in 4) of FIG. 5 is also simple in that the step of bonding the adhesive tape later becomes a simple step of attaching the adhesive tape to a flat surface in the same manner as 2) and 3) of FIG. It can be said that it is a simple method.

In addition, as a modification example of the manufacturing method of the insulation covering superconducting wire 1 shown in FIG. 4, it is also possible to employ | adopt the aspect as shown to 5) -7 of FIG.
In 5) to 7) of FIG. 5, two adhesive tapes exceeding the circumferential length (R) of the superconducting wire 20 are bonded to both surfaces of the superconducting wire 20 when the widths are added together. 4 is common to the example shown in FIG.
Further, the method shown in 5) of FIG. 5 is common to the example shown in FIG. 4 in that the edge of the adhesive tape is first bonded along the side edge of the superconducting wire 20 respectively.
On the other hand, 6) and 7) in FIG. 5 are not attached to the superconducting wire 20 although they are difficult to work in comparison with the method shown in 5) in FIGS. The method is the same as the method shown in FIG. 4 or 5) in that it has the advantage that a single adhesive tape can be wound around the back of each other in a single step.

  Further, although a complicated process is required and the amount of adhesive tape used is increased, a part of resin tape 3 as shown in 8) and 9) of FIG. 5 is formed in order to form a more reliable insulating layer. It is also possible to form a multilayer structure.

Furthermore, in this embodiment, the case where the adhesive layer is formed only on one side is illustrated, but it is also possible to form the adhesive layer on both sides of the resin tape layer. There is no need to share the thickness and forming material of one adhesive layer with the thickness and forming material of the other adhesive layer.
In addition, by providing the adhesive layer on both sides, when the superconducting coil was formed by winding the insulating coating superconducting wire, the insulating coating superconducting wires adjacent to each other in the vertical and horizontal directions were provided on the surface. The adhesive layers are bonded and fixed to each other, and it is possible to further suppress the possibility that the wires rub against each other due to vibration or the like and generate frictional heat.

4 and 5 using a plurality of adhesive tapes, it is not necessary to use the same material for forming the adhesive layer as well as the resin tape used for each adhesive tape.
Furthermore, the present invention is not limited to the above examples, and various improvements can be made in addition to the above examples, and a resin tape provided with an adhesive layer is vertically attached to a superconducting wire to form an insulating layer. As long as it is, an insulation coated superconducting wire excellent in insulation reliability can be obtained.

1 Insulation coated superconducting wire 10 Adhesive tape 11 Resin tape layer 12 Adhesive layer 20 Superconducting wire

Claims (3)

An insulating covering superconducting wire in which an insulating layer covering the entire circumference of the flat superconducting wire is formed of a resin tape,
The resin tape is adhered to the superconducting wire through an adhesive layer provided on at least one surface thereof, and the insulating layer is formed to cover the superconducting wire in a vertically attached state. Insulation coated superconducting wire. An insulating coated superconducting wire manufacturing method for manufacturing an insulating coated superconducting wire in which an insulating layer covering the entire circumference of the flat superconducting wire is formed of a resin tape,
A resin tape provided with an adhesive layer on at least one side is vertically attached to the superconducting wire, and the insulating layer is covered by covering the superconducting wire with the resin tape by adhering the adhesive layer to the superconducting wire. A method of manufacturing an insulation-coated superconducting wire, characterized by comprising:   Two resin tapes provided with an adhesive layer are used, and one of the two resin tapes is adhered from one side of the superconducting wire and the other resin tape is adhered from the other side of the superconducting wire. In addition, by using two resin tapes whose combined width is longer than the circumferential length of the superconducting wire, both ends in the width direction of the two resin tapes are overlapped with each other, so that the entire circumference of the superconducting wire is covered. The method of manufacturing an insulation-coated superconducting wire according to claim 2, wherein the covering insulating layer is formed.

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