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Membrane Switches

Membrane Switches

Membrane Switches

Product catalog summary
Product Specifications:
The document provides a detailed overview of various DuploCOLL® adhesive tapes, specifying their thickness, carrier material, and packing unit (PU). The tapes are categorized based on their carrier material, such as PET and PE-Foam, and are available in different colors like black and white. The thickness of these tapes ranges from 0.050 mm to 0.800 mm.

Spacer Range:
The document outlines the standard spacer range for the membrane switches industry, including single-sided and double-sided pure acrylic coatings, as well as modified acrylic coatings. The spacers are available in sheets of 1000 x 700 mm, with other formats available upon request.

Surface Preparation and Bonding:
For optimal bonding, surfaces must be clean, dry, and free from contaminants. Recommended cleaning agents include isopropanol, benzine, and acetone. High contact pressure is necessary for effective bonding, and the adhesive strength is fully realized after 24 hours.

Storage and Stability:
Adhesive tapes should be stored at 15-25 °C with 50-70% humidity. The storage stability varies by adhesive class, with pure acrylics lasting up to 2 years and natural rubber up to ½ year.

Environmental and Chemical Resistance:
Pure acrylic pressure-sensitive adhesives are recommended for outdoor applications due to their resistance to aging and weathering. The document also highlights the importance of chemical resistance in adhesives, particularly against solvents, oils, and acids.

Technical Recommendations:
The document emphasizes the importance of surface energy in achieving high adhesive strengths. It also advises on the use of hard adhesives for bonds requiring high final adhesion and provides guidance on the influence of flow properties on adhesion.
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Catalog excerpts

Membrane Switches-1

PRODUCT OVERVIEW FOR THE MEMBRANE SWITCHES INDUSTRY JLohmann >r The Bonding Engineers. Standard Spacer Range Double-sided pure acrylic coating

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Membrane Switches-2

Processing Instructions and Technical Information The storage stability of adhesive tapes depends on the different adhesive classes Application temperature The most favourable temperature for using pressure sensitive adhesive tapes is in the range +18 °C to +35 °C. If bonding is carried out at low temperatures, the initial strength of the bond will be reduced and final bond time extended. The surfaces to be bonded must be clean, dry and free of dust, grease, oil, and separating agents. Loose paint, protective coatings or faces must be removed or hardened. High contact pressure promotes all-over...

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