Bayfol® films with chemical resistance

High performance films: chemical resistant, impact resistant, printable and formable

Bayfol® CR is a high-performance extrusion film made from a polymer blend of polycarbonate (PC) and polyester. The Bayfol material is produced by the German company Covestro, which is one of the world's leading manufacturers of high-tech polymer materials. The company's products and solutions include polycarbonate films and can be found in many areas of our modern lives as well as in automotive. Innovation and sustainability drive the group to new developments - both in its products and in its manufacturing and plants. The different types of Bayfol® polycarbonate films each have different thicknesses and surfaces (from polished to textured). The material can be cold- and hot-formed and excellently printed with standard inks and by screen or digital printing. The transparent and translucent films are known for their excellent graphic and optical quality.

König offers you the Bayfol material made of polycarbonate and PBT in various thicknesses and surfaces from our warehouse in Wuppertal, Germany. On request, we can supply you Bayfol (from Covestro) and all other materials from our range cut-to-size into rectangular sheets or as roll material in the format you require. We are happy to provide you information about our product range and converting solutions into a roll or cut-to-size format.

Properties of Bayfol films from Covestro

This plastic material, which has been established for many years, is valued for its excellent and consistent quality. The polycarbonate / PBT film has excellent cold-forming characteristics, is suitable for high-pressure forming (HPF) processes and has established itself in film insert molding (FIM). The product Bayfol® CR is characterised by an increased resistance to chemicals, dynamic strength and flexibility. The material also has a strong mechanical and tear resistance and a great temperature resistance from -40 °C up to 130 °C). Bayfol® materials can be printed in brilliant colours using screen printing and offset printing with commercially available inks suitable for polycarbonate. Covestro's special solutions are suitable, for example, for use as membrane switches or for membrane keypads.

Chemical resistance of Bayfol specialty films:

One of the particular strengths of the Bayfol® material is their high chemical resistance. The advantage of Bayfol® CR over a simple polycarbonate film is its greater resistance to chemicals, for example liquid disinfectants. This makes Covestro materials particularly interesting for all applications where surfaces come into contact with chemicals.

Use for film insert molding:

Film insert molding (FIM) enables one-step fabrication of plastic components with a decorated or functional surface. In this process, a plastic material, usually decorated by printing on the back, is shaped and trimmed before being placed in an injection mold and back-injected or over-molded with a thermoplastic resin. FIM therefore is ideal for creating complex components in a single step.

Printability of Bayfol film produced by Covestro:

Like polycarbonate also the materials from Bayfol can be printed using various printing processes. The most common printing process in use by our customers is screen printing and digital printing.

Due to the extensive product features, Bayfol from Covestro is suitable for use in various application areas. These include nameplates, control panels, keypads and many more. Please let us know which requirements you have and we will send product information and propose a suitable material.

Our service:

As a specialist for technical films, we are happy to advise and support you in all technical questions. We will recommend the most suitable material for your usage. We can provide you with technical datasheets and samples for prototyping or initial application tests.

We offer you the high-quality Bayfol™ polycarbonate / PBT films from Covestro as roll or cut to size into sheets in the format you require. Just let us know the format you require and we will be happy to cut your order for you. All stock products are available quickly and will be with you within a few days after receiving your order, no matter if you choose cut-to-size or full Bayfol rolls. Contact our team for more information, we look forward to your enquiry.

Bayfol product range

We offer you high performance materials from the manufacturer Covestro in a thickness between 175 µm to 375 µm and with a maximum width of 1.140 mm, either cut to size into sheets or in a roll.

• BAYFOL CR 1-4: colourless, transparent, structure: polished / fine matt
• BAYFOL CR 6-2: colourless, surface structure: structured / very fine matt

Both films avoid a reflection of light due to the fine matt surface. A white Bayfol light diffusion film is not available. If you need material samples, special formats, further information’s or technical datasheets please contact us.

Properties of Bayfol special films

The mixture of the plastics PBT (polyester) and polycarbonate makes Bayfol films and sheets a versatile product with excellent performance solutions. This Covestro material is suitable for various usages and have the following characteristics:

• increased chemical resistance
• great mechanical strength
• good heat resistance
• high toughness and elasticity (even over a wide temperature range)
• electrical insulation capacity and good electrical properties
• cold and hot formable
• excellent printability with standard colours (e.g. in screen printing and digital printing processes)
• resistant to temperatures (temperature range up to approx. 130 °C)
• cold-resistant up to approx. -40 °C
• high dimensional stability
• good insulating performance
• high puncture resistance
• excellent tear resistance
• good dynamic strength and high flexibility.

Processing Bayfol special films

Bayfol sheets can be processed easily and well. According to the recommendations of the manufacturer Covestro, the following solutions are possible:

• printing
• cutting
• punching
• laser (possible to a limited extent)
• deep drawing
• back injection
• gluing
• cold and hot formable

No special accessories are required for processing Bayfol products and sheets. For laser cutting this material we suggest to test this yourself and adjust your settings of the laser cutter.

Applications of Bayfol special films

Covestro extrusion materials have excellent forming properties for a constant and strong performance. In addition, their excellent heat resistance makes them ideal for various performance solutions.

You can use the materials in a variety of industrial applications, such as

• Membrane keyboards
• Automotive usages
• Transparent display
• Typeplates and nameplate
• Membrane switches
• Front panels
• Keypads
• Control panels
• Light diffusion, light boxes and other light usages

Bayfol performance materials are ideally suited for the high-pressure forming (HPF) process and film insert moulding (FIM) and are ideal for printing. The chemical resistance makes Bayfol ideal for a usage in automotive.

If you have any further questions, please contact us. Our experienced team will be happy to advise you with the suitable information about Bayfol, polycarbonate and other Covestro materials. We are happy to propose you solutions for your application, no matter whether just a small cut to size or a Bayfol roll purchase.