7961MP, Membrane Switch Spacer, 3M, adhesive tape datasheet

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3M 7961MP
Membrane Switch Spacer

General Information

An 11.0 mil. polyester backing tape with #200 hi-performance acrylic adhesive primarily used as a spacer for membrane switch/ keyboard circuits. Solvent resistance is excellent when this product is properly applied to impervious materials. The adhesive resists softening through edge contact with mild acids, alkalis, oil, gasoline, Kerosene, JP-4 fuel and many other solvents. Total tape immersion in chemicals and solvents is not recommended. The bond strength is dependent upon the amount of adhesive-to-surface contact developed, firm application pressure develops better adhesive contact and therefore improves bond strength. Initial tape application below 50°F is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is generally satisfactory.

Backing	Adhesive (unwind)	Thickness (total)	Liner Type (outer)
PET - Polyester	Acrylic	11.00 mil	Paper (4.0 mil. 58# polycoated kraft)

Adhesion to Steel 180° Peel	adhesion to steel 180° peel - liner side	Tensile Strength	Elongation Percent
114.00 oz/in	114.00 oz/in

Min Application Temp	Min Service Temp	Max Short-Term Temp	Max Long-Term Temp
50 °F	-40 °F	300 °F	250 °F

Adhesive Tape Features

7.0 mil. polyester backing
2.0 mil. #200 acrylic adhesive coated on both sides
Dielectric strength: 1.5 KV/ mil.
Insulation resistance: 2.5 x 10 ohms
Volume resistivity: 1.1 x 10 ohms-cm
Surface resistivity: 1.1 x 10 ohms/ square
90° peel adhesion to stainless steel: 68 oz./in.
90° peel adhesion to epoxy: 74 oz./in.
90° peel adhesion to polyester: 62 oz./in.
90° peel adhesion to polycarbonate: 122 oz./in.
90° peel adhesion to ABS: 90 oz./in.
Long term environmentally stable bond
High cohesive strength to withstand repeated stresses from switch activation
High bond strength to high surface energy plastics such as polyester and polycarbonate
Bond strength not effected by moisture and humidity
Bond strength increases as a function of time and temperature
Adhesive is resistant to oxidation and ozone when exposed to air or sunlight.

Adhesive Tape Applications

Spacer for membrane switch/ keyboard circuits

Adhesive Tape Markets Served

Adhesive Tape Colors

Comparable products

3M 7961MP

Membrane Switch Spacer

Backing	Adhesive	Thickness	Adhesion
PET - Polyester	Acrylic	11.00mil	114.00oz/in

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Budnick Converting offers a number of services to take the product you need and make it perfect for your application. With converting methods ranging from precision slitting or die-cutting to printing and coating, Budnick has the capabilities to create anything you can dream up.

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The physical properties listed are typical values and are not to be considered as specifications. Our suggestions for use are based on tests we believe to be reliable. However, the purchaser must carry out their own tests to determine the suitability of the product for their internal use. Information is given in good faith, but without warranty.

It is essential, as with all pressure-sensitive tapes, that the surface to which the tape is applied be clean, dry and free of grease and oil.

Shelf life from date of manufacture is based on the product being stored at 70°F(21°C) / 50% relative humidity out of direct sunlight.

Specification compliance is dynamic and should only be used as a general guide. Always confirm that the tape you are interested in currently complies with all specification requirements. Please verify that the product number that you select is available in the proper size and color to meet your specification.