Electroconductive polyester film, electroconductive laminate comprising electroconductive polyester film, and high-voltage power transmission cable comprising electroconductive polyester film
The conductive polyester film with specific resin and pigment composition allows efficient laser cutting and maintains tensile strength, addressing the challenges of incomplete cuts and reduced lifespan in high-voltage power transmission cables.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- DAI NIPPON PRINTING CO LTD
- Filing Date
- 2025-12-17
- Publication Date
- 2026-07-02
AI Technical Summary
Conductive films covering high-voltage power transmission cables do not adequately absorb laser light during cutting, leading to incomplete cuts and potential thermal damage, while high-power laser equipment is impractical due to high costs and power consumption, and the inclusion of conductive pigments can decrease tensile strength, shortening cable lifespan.
A conductive polyester film comprising a polyester resin and a predetermined amount of conductive pigment that absorbs laser light in the infrared region, with specific absorbance and tensile strength properties, allowing efficient laser cutting and maintaining tensile strength.
Enables effective laser cutting of high-voltage power transmission cables with minimal thermal damage and maintains tensile strength, extending cable lifespan by suppressing insulation degradation and film breakage.
Smart Images
Figure JP2025044050_02072026_PF_FP_ABST