Reverse Treated Electrolytic Copper Foil (35μm x A4 Paper Size) - Conduct Electricity & EMI Shielding, Perfect for Paper Circuits, Electrical Repairs, Grounding, Radiating, Soldering, FPC, 5G (20pcs)

RTF, reverse treated electrolytic copper foil is a copper foil that has been roughened to varying degrees on both sides. This strengthens the peel strength of both sides of the copper foil, making it easier to use as an intermediate layer for bonding to other materials. Moreover, the different levels of treatment on both sides of the copper foil make it easier to etch the thinner side of the roughened layer. In the process of making a printed circuit board (PCB) panel, the treated side of the copper is applied to the dielectric material. The treated drum side is rougher than the other side, which constitutes a greater adhesion to the dielectric. This is the main advantage over standard electrolytic copper. The matte side does not require any mechanical or chemical treatment prior to the application of photoresist. It is already rough enough to have good laminating resist adhesion.

• High-Peel Strength: Our RTF copper foil features a roughened surface on both sides, enhancing the peel strength and making it easier to bond with other materials. Enjoy exceptional adhesion and durability for your projects.
• Superior Bonding Performance: With varying degrees of treatment on each side, our RTF copper foil is specifically designed for use as an intermediate layer in PCB panel manufacturing. The treated side provides a stronger adhesion to dielectric materials, ensuring a reliable bond that withstands the test of time.
• Hassle-Free Etching: The different levels of treatment on our RTF copper foil allow for easier etching of the thin side of the roughened layer.Without complex mechanical or chemical pretreatment steps - our matte side is already rough enough for optimal photoresist application.
• Versatile Applications: Whether you're a professional PCB manufacturer or a DIY enthusiast, our RTF copper foil is perfect for various applications. Use it for printed circuit board fabrication, electronic repairs, or any project requiring a strong and reliable electrical connection.
• Customer-Focused Support: We are committed to providing exceptional customer service. If you have any questions or concerns about our RTF copper foil, please don't hesitate to reach out to our friendly and knowledgeable team. We're here to ensure your satisfaction and success.