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3M™ Membrane Switch Spacer 7957MP, Clear, 24 in x 36 in, 7 mil, 100 Sheet/Case
$1,110.14 / Case
| SKU | 7000001569 |
|---|---|
| Legacy SKU | 70016034707 |
| UPC | 50021200177502 |
| Catalog Number | 7957MP |
| Product Number | 7957MP |
3M Membrane Switch Spacer 7957MP features 3M High Performance Acrylic Adhesive 200MP, formulated for excellent shear strength, on a 3 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.
- 7 mil double-coated spacer is ideal for withstanding repeated stress of switch actuation
- 2 mil acrylic adhesive on each side delivers excellent shear strength, resists slippage and edge lifting
- 3 mil polyester film carrier provides strength and stability
- 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
Product Dimensions |
Imperial | Metric |
| Weight | 0 NULL | |
|---|---|---|
| Width | 0 null | |
| Length | 0 null | |
| Height | 0 null | |
| Thickness | 7 mil | 0.18 mm |
Shipping Dimensions |
|
| Weight | 54.14994 lb |
|---|---|
| Length | 37.4378 in |
| Width | 25.81299 in |
| Height | 2.31299 in |
| Color | Transparent |
|---|
PRODUCT FAQ
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What is 3M™ Membrane Switch Spacer 7957MP used for?
The switch spacer is designed to provide support and sustain the proper gap between a graphic overlay and PCB during the assembly of membrane switches.
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How big are the sheets of 3M™ Membrane Switch Spacer 7957MP?
The dimensions of each sheet are approximately 24 inches by 36 inches.
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Is this product transparent or opaque?
This particular version, identified as "Clear" in its title, has a translucent quality that aids in it accommodating backlighting.
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Are there packing requirements for storing these products before I can use them?
We suggest you store your spacers at room temperature (72°F/22°C) under normal humidity conditions away from direct sunlight. You will also want to use within six months after receiving them.
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. Can I buy fewer sheets than an entire case of this product?
. Yes, we offer smaller quantities through authorized distributors who conveniently sell online via our Where To Buy page on our website.
3M™ Membrane Switch Spacer 7957MP is an ideal solution for switch actuation over long periods. It features 3M™ High Performance Acrylic Adhesive 200MP that provides 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 3.0 mil polyester film carrier, which adds structural strength.
The double-sided spacer comes with double 4.2 mil 58 lb. polycoated kraft (PCK) paper lay-flat liners that cover adhesive consistently for full bonding performance after application. The liners resist curling, tunneling, and buckling, increase dimensional stability, and hold up even under high humidity for efficient storage and processing. The 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 7957MP is constructed with 2.0 mil high performance acrylic adhesive that is coated on each side of a 3.0 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, Membrane Switch Spacer 7957MP provides excellent temperature resistance (up to 400⁰F/204⁰C short-term heat resistance), solvents, and UV resistance.
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.
Membrane switches are found in more and more applications, ranging from farm tractors and medical test systems to microwave ovens and fish finders. 3M has a membrane switch construction suited for the job, with low cost, long life, outstanding environmental performance, and eye-catching graphics.
The 3M Industrial Adhesives and Tapes Division applies the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. 3M IATD technologies help customers deliver competitive products to the market faster and more efficiently.
