Patent Application
20230230721
The present disclosure relates to a shielded flat cable.
Patent Document 1 discloses a flat cable, in which multiple conductors are arrayed in parallel and resin insulating films are laminated on the both side of the conductors, that includes a connection terminal, and at least one end of which is connected to an electrical connector. On the resin insulation film, a metal foil film for shielding is arranged with its metal surface facing outward, and the metal foil film is covered with a protective resin film except for a ground connecting part that connects to ground.
[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2011-198687
A shielded flat cable of the present disclosure includes multiple conductors arrayed together in parallel along a first plane, a resin insulating layer that sandwiches the first plane and that covers the conductors, a shield layer that covers an outer surface of the resin insulating layer and that includes an adhesive, and a pair of flame-retardant resin films that cover an outer surface of the shield layer. The pair of resin films have a first bonding section and a second bonding section where the pair of resin films are bonded to each other. The outer surface of the shield layer has a first portion that contacts the first bonding section and a second portion that contacts the second bonding section. The shield layer has a third bonding section where the adhesive is bonded to each other.
It is desired to improve the flame retardancy of a shielded flat cable used for transmission of high-frequency signals.
According to the present disclosure, the flame retardancy of the shielded flat cable can be improved.
Embodiments will be described below.
The embodiments of the present disclosure are first listed and described. In the following description, the same or corresponding elements are referenced by the same sign and the same description is not repeated for them.
[1] The shielded flat cable according to one aspect of the present disclosure includes a plurality of conductors arrayed together in parallel along a first plane, a resin insulating layer including a first resin insulating layer and a second insulating layer, the first plane being sandwiched between the first resin insulating layer and the second insulating layer, and the first resin insulating layer and the second insulating layer covering the plurality of conductors, a shield layer that covers an outer surface of the resin insulating layer and that includes an adhesive, and a pair of flame-retardant resin films that cover an outer surface of the shield layer. The pair of resin films have a first bonding section and a second bonding section where the pair of resin films are bonded to each other. The outer surface of the shield layer has a first portion that contacts the first bonding section and a second portion that contacts the second bonding section. The shield layer has a third bonding section where the adhesive is bonded to each other.
In the shielded flat cable according to one aspect of the present disclosure, there is a risk that flames may enter the first bonding section and second bonding section, but because the first portion of the shielded film is in contact with the first bonding section and the second portion of the shielded film is in contact with the second bonding section, even if flames enter, the sealed state of the shield layer is maintained. Therefore, the resin insulating layer is protected by the shield layer and excellent flame retardancy is obtained.
[2] In the above aspect [1], the end of the third bonding section may be separated from the first bonding section and the second bonding section. In this case, better flame retardancy is obtained.
[3] In the above aspect [1] or the above aspect [2], the third bonding section may have a first portion extending in a first direction perpendicular to the first plane and a second portion that is connected to the first portion and that extends toward another end of the resin insulating layer in a second direction in which the plurality of conductors are arrayed in parallel. In this case, better flame retardancy is obtained.
[4] In the above aspect [3], an end of the third bonding section may be positioned to overlap the resin insulating layer in the first direction. In this case, better flame retardancy is obtained.
[5] In the above aspect [1] to the above aspect [4], the third bonding section may have a multi-folded section folded at a side of one end of the resin insulating layer in a second direction in which the plurality of conductors are arrayed in parallel. In this case, better flame retardancy is obtained.
[6] In the above aspect [1] to the above aspect [5], the shield layer is a pair of the shield layers that respectively cover the upper and lower surfaces of the resin insulating layer, and the adhesive of one shield layer and the adhesive of another shield layer may be bonded at the third bonding section. In this case, processing of the shield layer is easy.
[7] A shielded flat cable according to another aspect of the present disclosure includes a plurality of conductors arrayed together in parallel along a first plane, a resin insulating layer including a first resin insulating layer and a second insulating layer, the first plane being sandwiched between the first resin insulating layer and the second insulating layer, and the first resin insulating layer and the second insulating layer covering the plurality of conductors, a shield layer that covers an outer surface of the resin insulating layer and that includes an adhesive, and a pair of flame-retardant resin films that cover an outer surface of the shield layer. The pair of resin films have a first bonding section and a second bonding section where the pair of resin films are bonded to each other. The outer surface of the shield layer has a first portion that contacts the first bonding section and a second portion that contacts the second bonding section. The shield layer has a third portion that covers one surface of the resin insulating layer that is parallel to the first plane and that reaches the first portion, and a fourth portion that covers the one surface of the resin insulating layer from above the third portion.
According to the shielded flat cable according to another aspect of the present disclosure, excellent flame retardancy is obtained. Additionally, processing of the shield layer is easy.
[8] In the above aspect [7], the shield layer is a pair of the shield layers that respectively cover the upper and lower surfaces of the resin insulating layer, and the third portion may be included in one layer of the shield layers and the fourth portion may be included in another layer of the shield layers. In this case, processing of the shield layer is easy.
[9] In the above aspect [1] to the above aspect [8], the shield layer may be disposed between the first bonding section and second bonding section in a second direction in which the plurality of conductors are arrayed in parallel. In this case, it is easy to dispose the pair of resin films to cover the outer surface of the shield layer.
[10] A shielded flat cable according to another aspect of the present disclosure includes a plurality of conductors arrayed together in parallel along a first plane, a resin insulating layer including a first resin insulating layer and a second insulating layer, the first plane being sandwiched between the first resin insulating layer and the second insulating layer, and the first resin insulating layer and the second insulating layer covering the plurality of conductors, and a shield layer that covers an outer surface of the resin insulating layer and that includes an adhesive and a flame-retardant resin film. The shield layer has a second plane and a third plane opposite to the second plane. The adhesive is provided on the second plane, the resin film is provided on the third plane, and the adhesive is disposed closer to the resin insulating layer than the resin film is. The shield layer has a fifth portion that covers at least a portion of one surface of the resin insulating layer, the one surface being parallel to the first plane, and a sixth portion that covers the one surface of the resin insulating layer from above the fifth portion.
[11] In the above aspect [10], the fifth portion may reach one end of the resin insulating layer in the second direction in which the plurality of conductors are arrayed in parallel. In this case, processing of the shield layer is easy.
[12] In the above aspect [10] or the above aspect [11], the shield layer is a pair of the shield layers that respectively cover the upper and lower surfaces of the resin insulating layer, and the fifth portion may be included in one layer of the shield layers and the sixth portion may be included in another layer of the shield layers. In this case, processing of the shield layer is easy.
The embodiments of the present disclosure will be described in detail below, but the embodiments are not limited to these. In this specification and drawings, components having substantially the same functional configuration may be referenced by the same sign, and duplicate description may be omitted. In each drawing, an XYZ orthogonal coordinate system is set for convenience of description.
A first embodiment will be described. The first embodiment relates to a shielded flat cable.
A shielded flat cable 100 according to the first embodiment is a cable used for electrically connecting devices or for wiring in a device. As illustrated in
The shielded flat cable 100 includes a resin insulating layer 130 that sandwiches the first plane 101 and that covers the multiple conductors 110. For example, the resin insulating layer 130 includes a first resin insulating layer 131 on the −Z side of the first plane 101 and a second resin insulating layer 132 on the +Z side of the first plane 101. The resin insulating layer 130 is a layer for securing the dielectric strength and high-frequency characteristics of the shielded flat cable 100, and is made of a resin such as polyethylene, polypropylene, polyimide, polyethylene terephthalate, polyester, polyphenylene sulfide, or the like.
The shielded flat cable 100 includes a shield layer with adhesive 140 that covers the outer surface of the resin insulating layer 130. The shield layer with adhesive 140 includes a shield layer 141 and an anchor coating layer 142. The shield layer 141 is a layer having a shielding function to counteract noise and secure high-frequency characteristics of the shielded flat cable 100, and is made of, for example, a metal foil of copper foil or aluminum foil. The anchor coating layer 142 is provided between the resin insulating layer 130 and the shield layer 141 to bond the resin insulating layer 130 and the shield layer 141. The material of the anchor coating layer 142 is not limited. For example, as the material for the anchor coating layer 142, a urethane-based anchor coating material, which is a mixture of polyurethane as the main agent and an isocyanate-based curing agent, can be used. The anchor coating layer 142 is an example of an adhesive.
The shield layer with adhesive 140 is arranged such that the anchor coating layer 142 touches the outer surface of the resin insulating layer 130 (a surface opposite to the surfaces of the first resin insulating layer 131 and the second resin insulating layer 132 bonded to the conductor 110). The shield layer with adhesive 140 continuously surrounds the outer surface of the resin insulating layer 130 and has a third bonding section 150 where the anchor coating layer 142 is bonded to itself.
Two ends of the shield layer with adhesive 140 forming the third bonding section 150 are bonded on the side of the −Y side end of the resin insulating layer 130, and the third bonding section 150 is bent along the −Y side edge of the resin insulating layer 130. An end 153 of the third bonding section 150 is positioned to overlap the resin insulating layer 130 in the Z-axis direction. That is, the third bonding section 150 has a first portion 151 extending in the Z-axis direction from the side of the −Y side end of the resin insulating layer 130 and a second portion 152 connected to the first portion 151 and extending in the Y-axis direction toward the +Y side end of the resin insulating layer 130. The Z-axis direction is an example of a first direction.
The shielded flat cable 100 includes a pair of flame-retardant resin films 160 that cover the outer surface of the shield layer with adhesive 140. The pair of resin films 160 include a base material layer 161, a flame-retardant insulating layer 162, and an anchor coating layer 163. The base material layer 161 is a layer for securing the dielectric strength of the shielded flat cable 100 and is made of, for example, polyethylene terephthalate. The flame-retardant insulating layer 162 is a layer for bonding the resin insulating layer 130 or the shield layer 141 to the base material layer 161 while securing the flame retardancy, pressure resistance, and deterioration resistance of the shielded flat cable 100, and is made of, for example, a thermoplastic resin material. As the flame-retardant insulating layer 162, for example, a thermoplastic polyester resin containing a phosphorus-based flame retardant or a nitrogen-based flame retardant can be used. The anchor coating layer 163 for bonding the base material layer 161 to the flame-retardant insulating layer 162 is provided between the base material layer 161 and the flame-retardant insulating layer 162. The material of the anchor coating layer 163 is not limited. For example, as the material of the anchor coating layer 163, it is preferable to use the same material as that of the anchor coating layer 142. The anchor coating layer 163 may be flame-retardant.
In the Y-axis direction, the dimension of the resin film 160 is larger than the dimension of the resin insulating layer 130 and the dimension of the shield layer with adhesive 140. In the Y-axis direction, the ends on both sides of the resin film 160 extend outward from the ends on both sides of the resin insulating layer 130 and the shield layer with adhesive 140. The pair of resin films 160 have a first bonding section 11 in which the −Y side end of one resin film 160 is bonded to the −Y side end of the other resin film 160, and a second bonding section 12 in which the +Y side end of one resin film 160 is bonded to the +Y side end of the other resin film 160. That is, the pair of the resin films 160 have the first bonding section 11 and the second bonding section 12 in which the pair of the resin films 160 are bonded to each other. For example, in the Y-axis direction, the shield layer 141 is arranged between the first bonding section 11 and the second bonding section 12. In the first bonding section 11 and the second bonding section 12, the base material layers 161 of the pair of the resin films 160 are bonded to each other through the flame-retardant insulating layer 162 and the anchor coating layer 163. The entire surface of both ends of the resin insulating layer 130 and the shield layer with adhesive 140 is covered with the pair of the resin films 160.
The outer peripheral surface of the shield layer 141 has a first portion 21 that contacts the first bonding section 11 and a second portion 22 that contacts the second bonding section 12. For example, the pair of the resin films 160 are bonded on the first portion 21 and the second portion 22. Additionally, the end 153 of the third bonding section 150 is separated from the first bonding section 11 and the second bonding section 12.
In the shielded flat cable 100, the flame-retardant insulating layer 162 and the shield layer 141 protect the resin insulating layer 130 against flames approaching in the Z-axis direction. Additionally, there is a risk that flames approaching the end in the width direction (the Y-axis direction) may enter the first bonding section 11 or the second bonding section 12, but the first portion 21 is in contact with the first bonding section 11 and the second portion 22 is in contact with the second bonding section 12, so that the sealed state of the shield layer 141 is maintained. Thus, the resin insulating layer 130 is protected by the shield layer 141 and flames can be quickly extinguished. Therefore, excellent flame retardancy can be obtained and excellent results can be obtained in flame tests such as VW-1 tests.
Better flame retardancy is obtained because the end 153 of the third bonding section 150 is separated from the first bonding section 11 and the second bonding section 12.
The third bonding section 150 has a first portion 151 and a second portion 152. That is, the third bonding section 150 is bent along the outer shape of the resin insulating layer 130. Furthermore, the end 153 is positioned to overlap the resin insulating layer 130 in the Z-axis direction. Therefore, the third bonding section 150 is not easily opened, and better flame retardancy can be obtained.
In manufacturing the shielded flat cable 100, for example, the shield layer with adhesive 140 is arranged to surround the resin insulating layer 130, and the anchor coating layer 142 is bonded at its two ends to form the third bonding section 150. Additionally, it is easy to bend the third bonding section 150 to include the first portion 151 and the second portion 152. Therefore, a shielded flat cable 100 with excellent flame retardancy can be easily manufactured.
Additionally, because the shield layer 141 is arranged between the first bonding section 11 and the second bonding section 12 in the Y-axis direction, it is easy to arrange the pair of the resin films 160 to cover the outer surface of the shield layer 141.
A second embodiment will be described.
As illustrated in
The first shield layer with adhesive 240A covers the −Z side outer surface of the first resin insulating layer 131, and the second shield layer with adhesive 240B covers the +Z side outer surface of the second resin insulating layer 132. The shield layer with adhesive 240 has a third bonding section 250A where the anchor coating layers 142 at the −Y side end of the first shield layer with adhesive 240A and at the −Y side end of the second shield layer with adhesive 240B are bonded together. The shield layer with adhesive 240 has a third bonding section 250B where the anchor coating layers 142 at the +Y side end of the first shield layer with adhesive 240A and the anchor coating layers 142 at the +Y side end of the second shield layer with adhesive 240B are bonded together.
The third bonding section 250A is bent along the −Y side edge of the resin insulating layer 130. An end 253A of the third bonding section 250A is positioned to overlap the resin insulating layer 130 in the Z-axis direction. That is, the third bonding section 250A has a first portion 251A extending in the Z-axis direction from the side of the −Y side end of the resin insulating layer 130 and a second portion 252A connected to the first portion 251A and extending in the Y-axis direction toward the +Y side end of the resin insulating layer 130.
The third bonding section 250B is bent along the +Y side edge of the resin insulating layer 130. An end 253B of the third bonding section 250B is positioned to overlap the resin insulating layer 130 in the Z-axis direction. That is, the third bonding section 250B has a first portion 251B extending in the Z-axis direction from the side of the +Y side end of the resin insulating layer 130 and a second portion 252B connected to the first portion 251B and extending in the Y-axis direction toward the −Y side end of the resin insulating layer 130.
As in the first embodiment, the outer surface of the shield layer 141 has the first portion 21 that contacts the first bonding section 11 and the second portion 22 that contacts the second bonding section 12. For example, the pair of the resin films 160 are bonded on the first portion 21 and the second portion 22. Additionally, the end 253A of the third bonding section 250A and the end 253B of the third bonding section 250B are separated from the first bonding section 11 and the second bonding section 12.
The other configurations are substantially the same as those of the first embodiment.
Excellent flame retardancy can also be obtained by the shielded flat cable 200 according to the second embodiment.
In manufacturing the shielded flat cable 200, for example, the first shield layer with adhesive 240A and the second shield layer with adhesive 240B are arranged such that the resin insulating layer 130 is sandwiched between them in the Z-axis direction, and the anchor coating layers 142 are bonded at their ends to form the third bonding sections 250A and 250B. Additionally, it is easy to bend the third bonding section 250A to include the first portion 251A and the second portion 252A, and to bend the third bonding section 250B to include the first portion 251B and the second portion 252B. Therefore, it is particularly easy to process the first shield layer with adhesive 240A and the second shield layer with adhesive 240B, and a shielded flat cable 200 with excellent flame retardancy can be easily manufactured.
The third embodiment will be described.
As illustrated in
The third bonding section 250A includes a multi-folded section 354A provided between the resin insulating layer 130 and the first bonding section 11 in the Y-axis direction. The multi-folded section 354A has the first portion 251A extending in the Z-axis direction and the second portion 252A connected to the first portion 251A and extending in the Y-axis direction toward the +Y side end of the resin insulating layer 130.
The third bonding section 250B includes a multi-folded section 354B provided between the resin insulating layer 130 and the second bonding section 12 in the Y-axis direction. The multi-folded section 354B has the first portion 251B extending in the Z-axis direction and the second portion 252B connected to the first portion 251B and extending in the Y-axis direction toward the −Y side end of the resin insulating layer 130.
As in the first embodiment, the outer surface of the shield layer 141 has the first portion 21 that contacts the first bonding section 11 and the second portion 22 that contacts the second bonding section 12. For example, the pair of the resin films 160 are bonded on the first portion 21 and the second portion 22. Additionally, the end 253A of the third bonding section 250A is provided inside the multi-folded section 354A and is separated from the first bonding section 11 and the second bonding section 12. The end 253B of the third bonding section 250B is provided inside the multi-folded section 354B and is separated from the first bonding section 11 and the second bonding section 12.
The other configurations are substantially the same as those of the second embodiment.
Excellent flame retardancy can also be obtained by the shielded flat cable 300 according to the third embodiment. Particularly, the third bonding sections 250A and 250B are not easily opened, so that better flame retardancy can be obtained.
In manufacturing the shielded flat cable 300, for example, the first shield layer with adhesive 240A and the second shield layer with adhesive 240B are arranged such that the resin insulating layer 130 is sandwiched between them in the Z-axis direction, and the anchor coating layers 142 are bonded at their ends to form the third bonding sections 250A and 250B. Additionally, it is easy to bend the third bonding section 250A to include the multi-folded section 354A and to bend the third bonding section 250B to include the multi-folded section 354B. Therefore, a shielded flat cable 300 with excellent flame retardancy can be easily manufactured.
Here, as in the first embodiment, the single shield layer with adhesive 140 may be used to form the third bonding section 150, and the multi-folded section may be formed by folding the third bonding section 150 multiple times.
A fourth embodiment will be described.
As illustrated in
As in the first embodiment, the outer surface of the shield layer 141 has the first portion 21 that contacts the first bonding section 11 and the second portion 22 that contacts the second bonding section 12. For example, the pair of the resin films 160 are bonded on the first portion 21 and the second portion 22.
The other configurations are substantially the same as those of the first embodiment.
Excellent flame retardancy can also be obtained by the shielded flat cable 400 according to the fourth embodiment.
In manufacturing the shielded flat cable 400, for example, the shield layer with adhesive 140 is arranged such that one end reaches the −Y side end of the resin insulating layer 130, and the other end overlaps the shield layer with adhesive 140 by surrounding the outer periphery of the resin insulating layer 130. Therefore, a shielded flat cable 400 with excellent flame retardancy can be easily manufactured.
A fifth embodiment will be described.
As illustrated in
The first shield layer with adhesive 240A covers the outer surface of the first resin insulating layer 131 on the −Z side, and the second shield layer with adhesive 240B covers the outer surface of the second resin insulating layer 132 on the +Z side. In the fifth embodiment, the second shield layer with adhesive 240B includes a third portion 543, and the first shield layer with adhesive 240A includes fourth portions 544A and 544B. The third portion 543 covers one surface 130A of the resin insulating layer 130 that is parallel to the first plane 101 and reaches both the first portion 21 and the second portion 22. That is, the third portion 543 reaches both the end of the resin insulating layer 130 on the first bonding section 11 side in the Y-axis direction (the −Y side end) and the end of the resin insulating layer 130 on the second bonding section 12 side in the Y-axis direction (the +Y side end). The fourth portion 544A covers the surface 130A of the resin insulating layer 130 from above the third portion 543 in the vicinity of the end on the first bonding section 11 side (the −Y side end). The fourth portion 544B covers the surface 130A of the resin insulating layer 130 from above the third portion 543 in the vicinity of the end on the second bonding section 12 side (the +Y side end). The anchor coating layers 142 of the fourth portions 544A and 544B are provided between the shield layer 141 of the third portion 543 and the shield layers 141 of the fourth portions 544A and 544B to bond shield layer 141 of the third portion 543 and the shield layers 141 of the fourth portions 544A and 544B.
As in the fourth embodiment, the outer surface of the shield layer 141 has the first portion 21 that contacts the first bonding section 11 and the second portion 22 that contacts the second bonding section 12. For example, the pair of the resin films 160 are bonded on the first portion 21 and the second portion 22.
The other configurations are substantially the same as those of the fourth embodiment.
Excellent flame retardancy can also be obtained by the shielded flat cable 500 according to the fifth embodiment.
In manufacturing the shielded flat cable 500, for example, the first shield layer with adhesive 240A and the second shield layer with adhesive 240B are arranged such that the resin insulating layer 130 is sandwiched between them in the Z-axis direction. At this time, the second shield layer with adhesive 240B is arranged such that one end reaches the first portion 21 and the other end reaches the second portion 22. That is, the second shield layer with adhesive 240B is arranged such that one end reaches the −Y side end of the resin insulating layer 130 and the other end reaches the +Y side end of the resin insulating layer 130. Additionally, the first shield layer with adhesive 240A is arranged such that both ends overlap the second shield layer with adhesive 240B. Therefore, it is particularly easy to process the first shield layer with adhesive 240A and the second shield layer with adhesive 240B, and a shielded flat cable 500 with excellent flame retardancy can be easily manufactured.
A sixth embodiment will be described.
As illustrated in
The shield layer with adhesive and resin film 601 continuously surrounds the outer surface of the resin insulating layer 130. The shield layer with adhesive and resin film 601 has a fifth portion 605 and a sixth portion 606. The fifth portion 605 covers at least a portion of one surface 130A of the resin insulating layer 130 that is parallel to the first plane 101. The fifth portion 605 may be separated from both ends of the resin insulating layer 130 in the Y-axis direction. The sixth portion 606 covers the surface 130A of the resin insulating layer 130 from above the fifth portion 605. The anchor coating layer 142 of the sixth portion 606 is provided between the base material layer 161 of the fifth portion 605 and the shield layer 141 of the sixth portion 606 to bond the base material layer 161 of the fifth portion 605 to the shield layer 141 of the sixth portion 606.
In the shielded flat cable 600, the flame-retardant insulating layer 162 and the shield layer 141 protect the resin insulating layer 130. Additionally, because the shield layer with adhesive and resin film 601 is used and the resin films 160 are not bonded to each other, flames do not easily enter the inside of the shield layer with adhesive and resin film 601. Therefore, excellent flame retardancy can be obtained and excellent results can be obtained in flame tests such as VW-1 tests.
In manufacturing the shielded flat cable 600, for example, the shield layer with adhesive and resin film 601 is disposed such that the outer circumference of the resin insulating layer 130 is surrounded and the two ends overlap over the surface 130A. Therefore, a shielded flat cable 600 with excellent flame retardancy can be easily manufactured.
A seventh embodiment will be described.
As illustrated in
The other configurations are substantially the same as those of the sixth embodiment.
Excellent flame retardancy can also be obtained by the shielded flat cable 700 according to the seventh embodiment.
In manufacturing the shielded flat cable 700, for example, the shield layer with adhesive and resin film 601 is arranged such that one end reaches the −Y side end of the resin insulating layer 130 and the other end overlaps the shield layer with adhesive and resin film 601 by surrounding the outer periphery of the resin insulating layer 130. Therefore, particularly, it is easy to process the shield layer with adhesive and resin film 601, and a shielded flat cable 700 with excellent flame retardancy can be easily manufactured.
An eighth embodiment will be described.
As illustrated in
The first shield layer with adhesive and resin film 801A covers the outer surface of the first resin insulating layer 131 on the −Z side, and the second shield layer with adhesive and resin film 801B covers the outer surface of the second resin insulating layer 132 on the +Z side. In the eighth embodiment, the second shield layer with adhesive and resin film 801B includes a fifth portion 805, and the first shield layer with adhesive and resin film 801A includes sixth portions 806A and 806B. The fifth portion 805 covers one surface 130A of the resin insulating layer 130 that is parallel to the first plane 101 and reaches both the −Y side end and the +Y side end of the resin insulating layer 130 in the Y-axis direction. The sixth portion 806A covers the surface 130A of the resin insulating layer 130 from above the fifth portion 805 in the vicinity of the −Y side end. The sixth portion 806B covers the surface 130A of the resin insulating layer 130 from above the fifth portion 805 in the vicinity of the +Y side end. The anchor coating layers 142 of the sixth portions 806A and 806B are provided between the base material layer 161 of the fifth portion 805 and the shield layers 141 of the sixth portions 806A and 806B to bond the base material layer 161 of the fifth portion 805 to the shield layers 141 of the sixth portions 806A and 806B.
The other configurations are substantially the same as those of the sixth embodiment.
Excellent flame retardancy can also be obtained by the shielded flat cable 800 according to the eighth embodiment.
In manufacturing the shielded flat cable 800, for example, the first shield layer with adhesive and resin film 801A and the second shield layer with adhesive and resin film 801B are arranged such that the resin insulating layer 130 is sandwiched between them in the Z-axis direction. At this time, the second shield layer with adhesive and resin film 801B is arranged such that one end reaches the −Y side end of the resin insulating layer 130 and the other end reaches the +Y side end of the resin insulating layer 130. Additionally, the first shield layer with adhesive and resin film 801A is arranged such that both ends overlap the second shield layer with adhesive and resin film 8015. Therefore, particularly, it is easy to process the first shield layer with adhesive and resin film 801A and the second shield layer with adhesive and resin film 8015, and a shielded flat cable 800 with excellent flame retardancy can be easily manufactured.
Even if there is break or the like in the shield layer 141 or a cavity or the like due to non-bonding between the anchor coating layer 142 and the resin insulating layer 130, flames can be prevented from entering the resin insulating layer 130. For example, as illustrated in
Although the embodiments have been described in detail, the embodiments are not limited to the specific embodiments, and various modifications and changes can be made within the scope of the claims.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2020/025976 | 7/2/2020 | WO |
