3M 7959MP Double Sided Adhesive Spacer Film

3M™ 7959MP is a high-performance, clear double-sided adhesive spacer film developed for membrane switch applications. It consists of a 127 µm polyester film carrier coated on both sides with a 50 µm layer of 200MP acrylic adhesive. The entire assembly is protected by a double-sided, printed liner made of #58 brown polyethylene-coated kraft paper. The total thickness of the film is 0.23 mm (230 µm).

Technical Specification

• Quantity: 1 BOX = 100 sheets
• Width: 610 mm
• Length: 914 mm
• Total thickness: 0.23 mm
• Carrier: Polyester film 127 µm
• Adhesive: Acrylic 200MP, 50 µm on each side
• Liner: #58 Kraft paper, PE coated, printed, 107 µm
• Color: Clear
• Product Type: Spacer film for membrane switches

Application

• Separation of circuit layers in membrane switches
• Production of thin-film printed circuits
• Precision die-cutting using steel rule dies
• Applications requiring resistance to repeated pressure and stress
• Electronics industry and manufacturing of control devices

Benefits and Features

✅ High mechanical resistance – excellent shear and peel strength
✅ Excellent moisture, chemical, and UV resistance – durability in harsh conditions
✅ Thermal stability – resistance to high temperatures
✅ Precise processing – easy cutting, die-cutting, and converting
✅ No contamination and ease of application – clean work, ideal for production lines
✅ Printed PE liners – provide convenience and traceability during assembly

Application Guidelines

3M™ 7959MP film is dedicated to professional manufacturing processes, especially where durable and wear-resistant connections are required in thin-film electronic systems. It can be processed and die-cut using steel rule dies, and its design allows for selective cutting of high-precision elements.

3M™ 7959MP is a reliable solution for membrane switch manufacturers, offering durability, ease of processing, and full resistance to operational stresses.