Each adhesives application calls for designers to understand the LSE materials being bonded. Molded plastics, for example, might contain release agents. Automotive paints may be formulated to guard against chipping and keep dirt from clinging. Some LSE materials, such as those with a matte surface, are selected for decorative purposes.
New generations of high-performance adhesives used in pressure-sensitive tapes available today give designers a broad selection of possible solutions.
High-performance acrylics are ideal for applications where high temperature performance, long-term holding power, and resistance to harsh environments are required. These tapes perform in temperatures approaching 400F down to -40F, have a moisture-stable, easy to remove liner, are easy to die cut, lay flat for easy processing, and facilitate slitting and conversion. Applications include decorative trims, graphics, antenna mounting, and assembly.
New generation of high-performance pressure-sensitive double-coated and transfer tapes enables designers to bond nearly any LSE material, including those in automotive, electronics, and appliance applications.
(Source: Avery Dennison Performance Tapes)
An ultra-thin variety of high performance acrylics, literally half the thickness of a human hair, enable designers of smartphones, tablets, and notebooks to reduce the overall thickness of various mounted components. Mil thickness is as low as .4 mils, and the tape is controlled within ±10 percent for uniform bonding.
High-performance acrylic foam bond adhesives accommodate a broad range of substrates in automotive, transportation, appliances, electronics, building and construction, signage, and graphics applications. They come in a variety of grades, colors, thicknesses, and adhesion properties. Performance characteristics include high adhesion combined with good shear and stress relaxation and very good holding power. These tapes perform on irregular or curved surfaces, absorbing shock, evenly distributing stress, resisting high temperatures, and delivering high bond strength.
High-performance pressure-sensitive adhesive tapes exhibit advantages over liquid adhesives. The user simply applies pressure to bond the tape to a substrate and then removes a protective release liner.
A general range of low surface energy tapes has evolved for less demanding needs, such as cushioning or foam bonding that might be used in office areas, as well as gaskets or seals used in air flow control equipment.
Many of these new generations of high-performance pressure-sensitive adhesive tapes are recognized under UL 969 and UL 746C, allowing engineers and designers to address a broad range of design and application requirements.