Insulated wire
AssigneeProterial, Ltd.
InventorsTakami Ushiwata, Ikumi Ando, Hajime Nishi
Life of this patent
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Abstract
The insulated wire has a conductor having a long shape, and an insulation film including multiple pores and covering the conductor, wherein an opening area ratio SR measured by a method below is 1% or less. The method of measuring the opening area ratio SR includes peeling the insulation film from the conductor; obtaining a SEM image showing an interface on a conductor side in the insulation film peeled; calculating an area S1 of an observation region that is at least a part of the SEM image; and an area S2 of portions where the multiple pores are open in the observation region; and calculating the opening area ratio SR by the following Formula: SR=(S2/S1)×100.
Claims6
An insulated wire comprising:
- a conductor having a long shape;
- and
- an insulation film including multiple pores and covering the conductor,
- wherein an opening area ratio SR measured by a method below is 1% or less:
- the method of measuring the opening area ratio SR:
- peeling the insulation film from the conductor;
- obtaining a SEM image showing an interface on a conductor side in the insulation film peeled;
- calculating an area S1 of an observation region that is at least a part of the SEM image, and an area S2 of portions where the multiple pores are open in the observation region;
- and
- calculating the opening area ratio SR by Formula (1) below,
- SR=(S2/S1)×100 Formula (1).
Dependencies are inferred from the claim text.