3M 7957MP Double Sided Adhesive Transfer Tape

3M™ 7957MP is a high-performance, clear double-sided adhesive spacer film specifically designed for membrane switch applications. It consists of a 75 µm thick polyester film carrier coated on both sides with 200MP acrylic adhesive, which offers high shear and peel resistance. The entire film is protected by a double liner made of 107 µm thick #58 polycoated kraft paper, printed on both sides. The total thickness of the film is 0.18 mm (175 µm).

Technical Specification

• Quantity: 1 carton = 100 sheets
• Width: 610 mm
• Length: 914 mm
• Total Thickness: 0.18 mm
• Carrier: Polyester 75 µm
• Adhesive: Acrylic 200MP (50 µm on each side)
• Liner: Double #58 polycoated kraft paper, printed
• Color: Transparent
• Product Type: Spacer film for membrane switches

Application

• Separating circuit layers in membrane switches
• Manufacturing conductive films and touch keypads
• Bonding and separation of layers in thin-film electronic systems
• Die-cutting precise shapes using steel dies
• Applications requiring high mechanical and thermal resistance

Benefits and Features

✅ High shear and peel resistance – ideal for environments with high mechanical stress
✅ Resistance to moisture, solvents, and UV radiation – durability even in harsh conditions
✅ Thermal stability – excellent resistance to high temperatures
✅ Precise die-cutting and easy processing – ability for selective cutting without mess
✅ Flat, printed liners – facilitate identification and automation of the assembly process
✅ Designed for bonding flexible circuits – ensures durability and reliable operation of keypads

Application Guidelines

3M™ 7957MP film should be applied to clean and dry surfaces. It is perfectly suited for die-cutting and selective cutting, both manual and automated. Thanks to its construction, it can be used in automated production lines for assembling keypads and electronic components.

3M™ 7957MP is a reliable spacer film for precise applications in consumer and industrial electronics – combining durability, resistance, and ease of processing.