3M™ Membrane Switch Spacer 7959MP features 3M™ High Performance Acrylic Adhesive 200MP, formulated for excellent shear strength, on a 5 mil PET film carrier. This adhesive withstands repeated switch actuation and forms neat, clean edges for precise slitting and die-cutting. Double PCK paper liners resist humidity, curling, tunneling and buckling, and add stability for improved sheet processing.
The High-Shear Advantage – Less Oozing and Tighter Edges
Featuring 3M™ High Performance Acrylic Adhesive 200MP, our 3M™ Membrane Switch Spacer 7959MP is ideal for the stresses of switch actuation over long periods. The adhesive on this double-sided spacer is formulated for excellent shear strength – forming a durable bond with plastics and other smooth surfaces with less oozing at the edges. This allows for easier slitting and die-cutting, faster part processing and minimal waste. The adhesive is applied at 2.0 mils to each side of a 5.0 mil polyester film carrier which adds structural strength.
Double 4.2 mil 58 lb. polycoated kraft (PCK) paper lay-flat liners are designed to cover adhesive consistently for full bonding performance after application. Liners resist curling, tunneling and buckling, increase dimensional stability and hold up even under high humidity for efficient storage and processing. Liner design also enables improved rotary die-cutting at high speeds, as well as improved sheet processing.
Recommended Applications
Resilient and Ready
3M™ Membrane Switch Spacer 7959MP is constructed with 2.0 mil high performance acrylic adhesive that is coated on each side of a 5.0 mil polyester film carrier. This membrane switch spacer comes double-linered with a 4.2 mil, 58 lb. moisture-resistant, lay-flat, PCK paper. Designed to separate switch circuitry until actuation, our Membrane Switch Spacer 7959MP provides excellent temperature resistance (up to 400⁰F/204⁰C short-term heat resistance), solvents and UV resistance.
About Our High Performance Acrylic Adhesive 200MP
3M™ High Performance Acrylic Adhesive 200MP is considered an industry standard for graphic attachment and general industrial joining applications. It features outstanding adhesion to metal, polycarbonate (PC), ABS and polyester (PET), making it popular across many industries. This adhesive provides some initial repositionability for placement accuracy when bonding to plastics. It also performs well after exposure to humidity and hot/cold cycles, providing confidence that the switch will perform through difficult environmental conditions and millions of actuations.
The Right Choice for a Range of Applications
With low cost, long life, outstanding environmental performance and eye-catching graphics, membrane switches are found in more and more applications. They range from farm tractors and medical test systems to microwave ovens and fish finders. Whatever the need, 3M has a membrane switch construction suited for the job.
Bringing Better Ideas to the Surface through Science
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.
Pressure Sensitive Adhesive properties are frequency and temperature sensitive. 3M has developed Material Data Cards (MDCs) for common 3M PSAs for use with many commercially available FEA software applications. Learn more.
| Adhesive Type | High Performance Acrylic Adhesive 200MP |
| Back Side Adhesive Thickness (Imperial) | 2 mil |
| Back Side Adhesive Thickness (Metric) | 0.05 mm |
| Back Side Adhesive Type | High Performance Acrylic Adhesive 200MP |
| Backing (Carrier) Material | Polyester Film |
| Backing (Carrier) Thickness (Imperial) | 5 mil |
| Backing (Carrier) Thickness (Metric) | 0.13 mm |
| Brands | 3M™ |
| Face Side Adhesive Thickness (Imperial) | 2 mil |
| Face Side Adhesive Thickness (Metric) | 0.05 mm |
| Face Side Adhesive Type | High Performance Acrylic Adhesive 200MP |
| Indoor/Outdoor | Indoor/Outdoor |
| Industries | Metalworking, Signage, Specialty Vehicle, Woodworking, Appliance, Automotive, Converter Solutions, General Industrial, MRO, Print, Aerospace, Military & Government, Medical, Transportation, Point of Purchase, Electronics |
| Maximum Operating Temperature (Celsius) | 204 ℃ |
| Maximum Operating Temperature (Fahrenheit) | 400 ℉ |
| Minimum Operating Temperature (Fahrenheit) | -40 ℉ |
| Primary Liner | 58# Polycoated Kraft Paper |
| Primary Liner Color | Tan |
| Primary Liner Thickness (Imperial) | 4.2 mil |
| Primary Liner Thickness (Metric) | 0.11 mm |
| Product Color | Transparent |
| Secondary Liner | 58# Polycoated Kraft Paper |
| Secondary Liner Color | Tan |
| Secondary Liner Thickness (Imperial) | 4.2 mil |
| Secondary Liner Thickness (Metric) | 0.11 mm |
| Shelf Life | 18 Month |
| Smallest Saleable Unit | Sheet, Roll |
| Total Tape Thickness without Liner (Imperial) | 9 mil |
| Total Tape Thickness without Liner (Metric) | 0.23 mm |
| Overall Length (Imperial) | 36 yd |
| Overall Length (Metric) | 32.91 m |
| Overall Width (Imperial) | 24 in |
| Overall Width (Metric) | 609.6 mm |
Regulatory Data Sheet
Document Number: MSDS_2132264_US_EN_RDS
(PDF)
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3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
