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Polycarbonate film answers industry’s call for 5G mobile phone back cover

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5G-the latest generation of mobile communications-will soon be the basis for a fully mobile and networked society. MIMO, a key technology for delivering mobile 5G, allows data to be transferred more rapidly. For all its advantages, this great leap forward presents challenges for mobile phone manufacturers.

To take advantage of 5G, smartphones will need more space for antennas. Also, phone manufacturers will need an alternative to metal for the phone back cover. Fortunately, plastic films, with their high radio signal transparency, offer a smart solution that meets the technical demands of 5G and consumer demand for fashion-forward design.

Plastic films, with their high radio signal transparency, offer a smart solution that meets the technical demands of 5G and consumer demand for fashion-forward design.

Makrofol® films: The smart material alternative 

For 5G smartphones, our Makrofol® SR multilayer film solution with an acrylic top layer is a cost-effective option for creating back covers that are beautiful, with a look comparable to glass—but not as easily broken. With the new solution, customers can run critical processes like fine 3D patterning, non-conductive vacuum metallization (NCVM), screen printing, high-pressure forming and flow coating to improve the surface hardness. As such, phones with these back covers are tough enough to withstand day-to-day handling—including accidental drops. And because mobile phones are always within reach, consumers will appreciate the nice feeling of the phone in their hands.

Dialing up design with Makrofol® film

Our 3D-formable film offers design freedom for different textured, decorated looks that appeal to consumers’ sense of style. Some of the possible effects include:
•    A smooth gradient effect
•    Stripe effect with a glass-like look
•    Anti-glare surface

Our Makrofol® SR multi-layer films give mobile phone manufacturers a material that can meet 5G requirements, yet is also attractive and provides the design freedom needed for many different quality effects

Echol Zhao

head of Specialty Films Greater China at Covestro

  • Makrofol® SR multi-layer films support 5G high-frequency radio transmission requirements
  • Transparent Makrofol® SR multi-layer films create a beautiful, glass-like textured surface
  • Strong, durable Makrofol® SR multi-layer films protect the phone from damage
  • Makrofol® SR multi-layer films offer good abrasion resistance to prevent scratches

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