Premium 6 mil double-coated membrane switch spacer with High Performance Acrylic Adhesive 200MP, polyester film carrier, and moisture-resistant PCK liners for superior shear strength and precision die-cutting in industrial applications.
The 3M™ Membrane Switch Spacer 7956MP is a premium double-coated adhesive spacer specifically engineered for membrane switch applications requiring exceptional durability and precision. This 6 mil spacer features 3M's High Performance Acrylic Adhesive 200MP applied at 2.0 mils to each side of a 2.0 mil polyester film carrier, delivering outstanding shear strength and adhesion to plastics, metals, and smooth surfaces. The adhesive formulation resists oozing at edges and die-cuts, enabling faster part processing with minimal waste while maintaining neat, clean edges for precise slitting and die-cutting operations.
Constructed with double 4.2 mil, 58 lb. polycoated kraft (PCK) paper lay-flat liners, this membrane switch spacer provides exceptional dimensional stability and moisture resistance. The liners resist curling, tunneling, and buckling under high humidity conditions, making them ideal for efficient storage and high-speed rotary die-cutting operations. This product is designed to separate switch circuitry until actuation and can withstand repeated stress cycles, making it suitable for long-term switch performance in demanding applications.
The 3M™ Membrane Switch Spacer 7956MP offers excellent temperature resistance ranging from -40°C to 204°C (-40°F to 400°F), along with superior UV and solvent resistance. With an 18-month shelf life and transparent color, this spacer is ideal for membrane switch spacers, switch mounting, circuit layer assembly, metal dome placement, lead protection, and die-cut laminations across aerospace, automotive, electronics, medical, and general industrial applications.
Key Features
- 6 mil double-coated spacer withstands repeated stress of switch actuation
- 2 mil High Performance Acrylic Adhesive 200MP on each side delivers excellent shear strength
- 2 mil polyester film carrier provides structural strength and stability
- Double 4.2 mil polycoated kraft paper liners resist humidity, curling, and tunneling
- Adhesive resists oozing at edges and die-cuts for faster part processing
- Excellent temperature resistance from -40°C to 204°C (-40°F to 400°F)
- Superior UV and solvent resistance for demanding environments
- Transparent color ideal for visual inspection and membrane switch applications
- 18-month shelf life with improved dimensional stability for storage
- High-speed rotary die-cutting capability with minimal edge lifting
Technical Specifications
| Specification |
Value |
| Product Number | 7956MP |
| 3M ID | 7100072986 |
| Adhesive Type | High Performance Acrylic Adhesive 200MP |
| Total Tape Thickness without Liner | 6 mil (0.15 mm) |
| Face Side Adhesive Thickness | 2 mil (0.05 mm) |
| Back Side Adhesive Thickness | 2 mil (0.05 mm) |
| Backing Material | Polyester Film |
| Backing Thickness | 2 mil (0.05 mm) |
| Primary Liner | 58# Polycoated Kraft Paper (Tan) |
| Primary Liner Thickness | 4.2 mil (0.11 mm) |
| Secondary Liner | 58# Polycoated Kraft Paper (Tan) |
| Secondary Liner Thickness | 4.2 mil (0.11 mm) |
| Product Color | Transparent |
| Maximum Operating Temperature | 204°C (400°F) |
| Minimum Operating Temperature | -40°C (-40°F) |
| Shelf Life | 18 Months |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Brand | 3M™ |
| Smallest Saleable Unit | Roll |
| Product Category | Membrane Switch Spacers |
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