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Application Profile

Market: Household Appliance

Application Description: Assembling “key pad” or membrane switch for controls on washing machines.

Application Method

Die-cut membrane switch assembly is laminated to the control panel module.

Key Application Requirements

Easy to apply. No mess, clean-up or cure cycles.

Benefits/Advantages To Customer

Easy to assemble: 3MLaminating Adhesives help make it easy to apply the membrane switch assembly to the control panel, helping to improve productivity.

Easy to use: Membrane switches using 3M adhesive technology are easy to operate by pushing the key pad to activate th appliance.

Simplify design: Membrane switches using 3M adhesive technology allow several controls to be consolidated into one mechanism, helping reduce costs.

Integrated design: Membrane switches using 3M adhesive technology can match the aesthetics of the design of the appliance, providing an integrated look.

Consistent: These tapes provide consistent quality and reliable performance.

Design flexibility: The tapes permit bonding of the switch in the housing without drilling holes or attaching screws and mechanical fasteners.

Excellent adhesion: These laminating adhesive and tape products adhere well to metal and high surface energy plastics. 3M Laminating Adhesive 9672LE is ideal for adhesion to powder coated paints or polypropylene plastics.

Excellent durability: Membrane Switches using 3M adhesive technology provide an exceptional seal against environments, including many typical household cleaning chemicals.

Excellent Reliability: Membrane Switches using 3M adhesive technology perform every time the key pad is pressed.

ADHESIVE TECHNOLOGY

3MHigh-performance Acrylic

Adhesive 200MP

PRODUCT

3MLaminating Adhesives 467MP, 468MP, 7952MP, 7955MP, 7962MP, and 7965MP

3MDouble Coated Laminating Adhesives 7956MP, 7957MP, 7959MP, and 7961 MP

3M Industrial Business

Market: Appliance

Application Description: Assembling “key pad” or membrane switch for controls on washing machines.

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Process

Membrane switch or "touch control" panels have been used on a variety of appliances such as ranges, microwave ovens, dishwashers, washers, dryers and many small appliances. The membrane switches are produced by "laminating" graphic overlays and switch circuit film layers. The layers are held together with 3M high performance adhesives. 3M high performance adhesives help prevent delamination of the layers and protect the switch circuit layers from outside contaminants.

Product

3MLaminating Adhesives 467MP, 468MP, 7945MP, 7952MP, 7955MP, 7962MP, and 7965MP for Graphic Attachment

3MLaminating Adhesives 7956MP, 7957MP, 7959MP, and 7961MP for Circuit Separation

3MLaminating Adhesive 468MP, 3M Laminating Adhesive 9672LE or 3MDouble Coated Foam Tape 4962 for Mounting

Companion Products

3MElectrically Conductive Adhesive Transfer Tape 9703

3MElectrically Conductive Adhesive Film 7303

Advantages

Made with a moisture-stabilized liner that can be die-cut to many customer specifications used to laminate the graphics to the flexible circuit. Double linered adhesives (3M 7952MP and 7955MP) are available for pre-cutting openings in the adhesive.

A polyester film with adhesives on both sides that acts as a dielectric spacer to separate and bond the top and bottom switch circuit layers.

The laminating adhesive is adhered to the backer board of the “touch control” switch, and then the entire membrane switch assembly is mounted to the inside of the cabinet housing. For more aggressive bonds, consider 3M 4962 tape.

Purpose

For internal electrical splices.

For interconnection to flexible or rigid printed circuit boards.

Key Decision Makers

Appliance OEM Design Engineer; Membrane Switch Manufacturer that sells to OEMs.

SIC Codes

3633 – Household Laundry Equipment

3631 – Household Cooking Equipment

3M Industrial Business

Market: Appliance

Application Description: Assembling “key pad” or membrane switch for controls on washing machines.

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For Additional Information

To request additional product information or to arrange for sales assistance, call

 

1-800-362-3550. Address correspondence to: 3M Industrial Business Customer

 

Response Center, Building 21-1W-10, 900 Bush Avenue, St. Paul, MN 55106. Our

 

fax number is 651-733-9175. In Canada, phone: 1-800-364-3577. In Puerto Rico,

 

phone: 1-787-750-3000. In Mexico, phone: 52-70-04-00.

Product Use

Warranty and

Limited Remedy

All statements, technical information and recommendations contained in this document are based upon tests or experience that 3M believes are reliable. However, many factors beyond 3M’s control can affect the use and performance of a 3M product in a particular application, including the conditions under which the product is used and the time and environmental conditions in which the product is expected to perform. Since these factors are uniquely within the user’s knowledge and control, it is essential that the user evaluate the 3M product to determine whether it is fit for a particular purpose and suitable for the user’s method of application.

Unless stated otherwise in 3M’s product literature, packaging inserts or product packaging for individual products, 3M warrants that each 3M product meets the applicable specifications at the time 3M ships the product. Individual products may have additional or different warranties as stated on product literature, package inserts or product packages. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR

IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable for user’s application. If the 3M product is defective within the warranty period, your exclusive remedy and 3M’s and seller’s sole obligation will be, at 3M’s option, to replace the product or refund the purchase price.

Limitation of Liability

Except where prohibited by law, 3M and seller will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental, or consequential, regardless of the legal theory asserted, including warranty, contract, negligence, or strict liability.

Industrial Business

Printed in the USA

Building 21-1W-10, 900 Bush Avenue

Awms7952.pdf

St. Paul, MN 55106

© 3M 2004