The flat, belt-like construction of the copper winding wires have led to improvement of performance and reduction in sizing. Those improvements expanded the usage for copper winding wires to be used in various types of components such as cables, sensors, solenoids, transformers, and motors.
We have been involved in developing these various types of copper winding
wires and continue our R&D to accommodate to the constant changing
needs of the market.
The benefits of rectangular copper winding wires are: the decrease in distributed
capacity which leads to decreased stray capacity, and lamination factor
will also be improved (up to 30%) because it will not create gaps unlike
winding with round wires.
‘ Technological Development of our Rectangular Winding Wire
@Established a facility in December of 2002 to specifically focus on advanced coil designing,for such type as the compact and high heat dissipating type edgewise coils, and Ώwinded rectangular flat wires with improved wire space factor. After periods of making improvements on our prototypes, it was commercialized in January of 2008.
@The special features of our equipments are@a.) round wires are rolled
down to flat square shape,and@b.) the varnish for insulation is periodically
dispensed and only in the amount needed to cover the felt. This method
is far more efficient than applying excess amounts of varnish with roll
coaters and squeezing out the excess with floating dies.
@Our current sizing ranges are (round wired converted) Σ0.2`Σ0.8 with a
reduction ratio range of 1:8`1:20, and 2 types of films which are solderable
esterimide and polyamidimide.
@We continue our R&D tofurther expand our current lineup of film types,
sizing ranges, and reduction ratios.
Photo above is 1:10 (round wire conversion 0.55Σ) primered polyesterimide
and coated
@@ polyamideimide.@ For inquiries regarding other types and compression ratios, please
@@ contact us.
We are ISO-9001 certified and continue take action to further strengthen and to maintain our quality. We strive to provide our customers with products that delivers all around satisfaction and assurance. We are also ISO 14001certified and take active measures to better conserve our environment.
SAN-EI electronics Toppage 
