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Adhesives may be broadly divided in two classes: structural and pressure-sensitive. To form a permanent bond, structural adhesives harden via processes such as evaporation of solvent (for example, white glue), reaction with UV radiation (as in dental adhesives), chemical reaction (such as two part epoxy), or cooling (as in hot melt).
The pressure applied to the tape allows the tape to have better contact with the surface and allows the physical forces between the two to build up. Usually, increased application pressure increases the bond of the adhesive to the substrate. PSA tape laboratory testing is often conducted with a 2 kg roller to increase test uniformity. [13]
Pressure-sensitive tape with adhesive on both sides of the carrier material. Gapping. Openings between layers of tape within a roll. Release coating. A very thin coating applied to the impervious tape backing so as to allow the tape to be unwound at a controlled level. Substrate. The substrate is the material to which the PSA tape must adhere ...
This is a marking tape used in the theater, film and television industry to mark areas on a stage for actors. Wound closure strip A medical tape (3M trademark). Surgical tape A medical tape. Stretch-release adhesive Adhesive type manufactured by 3M. Tear tape Allows for easy opening of fast-moving consumer goods. May also carry brand messaging ...
Dicing tape can be made of PVC, polyolefin, or polyethylene backing material with an adhesive to hold the wafer or substrate in place. In some cases dicing tape will have a release liner that will be removed prior to mounting the tape to the backside of the wafers, with a variety of adhesive strengths, designed for various wafer/substrate sizes and materials.
The disadvantage of the lack of instantaneous bonding exhibited by many adhesives can be overcome by using a suitable fast-curing adhesive or a combination of a standard adhesive with a second, fast-curing adhesive (e.g. double-sided adhesive tape) or with another joining method, such as spot welding, rivets, screws, or clinching / press ...
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