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SKU 7000001575
Legacy SKU 70007519575;70016041
UPC 50021200684222
Catalog Number 7945MP
Product Number 7945MP

3M Membrane Switch Spacer 7945MP features 3M High Performance Acrylic Adhesive 200MP, formulated for excellent shear strength, on a 1 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.

  • 5 mil total thickness spacer is ideal for withstanding repeated stress of switch actuation
  • 1 mil polyester film carrier provides strength and stability
  • 2 mil acrylic adhesive on each side delivers excellent shear strength, resists slippage and edge lifting
  • Adhesive resists oozing at edges and die-cuts for faster part processing
  • Layflat 58# polycoated kraft (PCK) liners add dimensional stability for various die-cutting operations
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On it's way to you April 8   

Qty

Minimum Order 1 Case
Order Increment 1 Case
  High-Quality Material
  Easy To Use
  Fast, Global Shipping
  Industry Low Price
Product Dimensions
Imperial Metric
Width 24 in 609.6 mm
Length 36 in 914.4 mm
Thickness 5 mil 0.13 mm
Shipping Dimensions
Weight 51 lb
Length 37.438 in
Width 25.813 in
Height 2.313 in
Color Transparent

PRODUCT FAQ

  1. What is 3M™ Membrane Switch Spacer 7945MP?

    It is a clear polyester spacer used for electronic applications such as membrane switches.

  2. How big are the sheets and how many come in a case?

    Each sheet is 24 inches by 36 inches and there are 100 sheets per case.

  3. Is this product easy to apply?

    Yes! This adhesive-backed spacer can be easily applied to smooth surfaces and provides excellent adhesive performance.

  4. Can you tell me more about the thickness of the product?

    Sure, it has a thickness of 5 mil, which means it offers good durability under normal wear and tear conditions for your application.

For industrial/occupational use only. Not for consumer sale or use.
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.
The High-Shear Advantage – Less Oozing and Tighter Edges

Our 3M™ Membrane Switch Spacer 7945MP features 3M™ High Performance Acrylic Adhesive 200MP, making it ideal for 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 1.0 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
  • Membrane switch spacers
  • Switch mounting
  • Circuit layer assembly
  • Metal dome placement
  • Lead protection
  • Die-cut laminations

3M™ Membrane Switch Spacer 7945MP is constructed with 2.0 mil high performance acrylic adhesive that is coated on each side of a 1.0 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 7945MP 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 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.

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