Sheet for wire harness, wire harness, and production method for wire harness

Abstract

Provided is a wire harness sheet that can be stored in an overlapping manner without using release paper and can be wound in a spiral shape around an electric wire bundle. A wire harness sheet 11 includes a first self-adhesive layer 15 of a sheet base material 13, the first self-adhesive layer 15 being is formed on one surface of a first common region 27, and the other surface of the first common region 27 becoming a first adhesive layer unformed portion 29; and a second self-adhesive layer 17 that is formed on at least part of one surface of a second common region 31.

1 . A sheet for a wire harness comprising:
 a sheet base material;   a first self-adhesive layer formed on one surface in a first common region of the sheet base material, wherein top and back surfaces of the sheet base material in the first common region exactly overlap each other when the sheet base material is viewed through from top, and the other surface in the first common region is a first adhesive layer unformed portion; and   a second self-adhesive layer formed on at least part of one surface in a second common region of the sheet base material, wherein top and back surfaces of the sheet material in the second common region exactly overlap each other when the sheet base material is viewed through from top, and the first self-adhesive layer is not formed in the second common region.   
     
     
         2 . The sheet for the wire harness according to the  claim 1 , wherein
 when the sheet base material is viewed through from top, a gap is provided between the first self-adhesive layer and the second self-adhesive layer.   
     
     
         3 . A wire harness comprising:
 a sheet base material;   a first self-adhesive layer formed on one surface in a first common region of the sheet base material, wherein top and back surfaces of the sheet base material in the first common region exactly overlap each other when the sheet base material is viewed through from top, and the other surface in the first common region is a first adhesive layer unformed portion;   a second self-adhesive layer formed on at least part of one surface in a second common region of the sheet base material, wherein top and back surfaces of the sheet base material in the second common region exactly overlap each other when the sheet base material is viewed through from top, and the first self-adhesive layer is not formed in the second common region; and   an electric wire bundle, wherein   the sheet base material is wound around the electric wire bundle, the winding starts from one end of the sheet base material in a direction in which the first self-adhesive layer and second self-adhesive layer are aligned, and the sheet base material is adhesively fixed to itself at a winding end by the first self-adhesive layer and second self-adhesive layer facing each other.   
     
     
         4 . A production method for a wire harness in which a sheet for the wire harness is used,
 the sheet for the wire harness including:   a sheet base material;   a first self-adhesive layer formed on one surface in a first common region of the sheet base material, wherein top and back surfaces of the sheet base material in the first common region exactly overlap each other when the sheet base material is viewed through from top, and the other surface in the first common region is a first adhesive layer unformed portion; and   a second self-adhesive layer formed on at least part of one surface in a second common region of the sheet base material, wherein top and back surfaces of the sheet base material in the second common region exactly overlap each other when the sheet base material is viewed through from top, and the first self-adhesive layer is not formed in the second common region,   the method comprising:   a step of winding the wire harness sheet around an electric wire bundle from a winding start base point which is in the first adhesive layer unformed portion or a second adhesive layer unformed portion which is on a back side of the second self-adhesive layer.