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MICRO: FEOL Equipment
absorption of energy from the lamps and emission of energy to the chamber, coatings or patterns on the wafer surfaces lead to across-wafer temperature variations.5 For example, even a very simple coating, consisting of a layer of polysilicon on top of a thin silicon dioxide film, can cause the lamp
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New meaning for sticky summer heat
High temperatures and humidity can wreak havoc on assemblies bonded with pressure-sensitive adhesives. During each manufacturing step of the release liner, and the creation of the pressuresensitive adhesive system, it is necessary to minimize the applied heat the paper sees and to remoisturize
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Tape eases appliance design pressures
and "release" needs. Release is the degree of ease with which the liner or backing may be removed from a tape. Typically, release is determined by a silicone coating that prevents the adhesive from forming a strong bond with the release liner. Some bond is necessary. Tape eases appliance design pressures
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New Roles For Ceramic Parts
Refinements in chemistry and processing let ceramics handle a broad range of new applications. Assn. of American Ceramic Component Manufacturers A tundish nozzle for manufacturing steel, developed by Zircoa, Solon,Ohio, has a fine-grained zirconia liner inside a more conventional coarse-grained
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Plastic Bearings
. Some precautions must be observed with phenolic bearings. Thermal conductivity is low, so heat generated by bearing friction cannot be readily transmitted through the bearing liner. Consequently, larger, heavily loaded bearings must have a generous feed of water or lubricating oil to carry away heat
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PSAs perform in assembly
the same process equipment may be used for various assembly lines. Fabricating specific parts and shapes allows for this flexibility. Basic components. PSA tapes consist of up to four basic components: the carrier (or facestock), an adhesive, a release coating, and liner paper. The carrier, or face-stock
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MICRO: Prod Tech News
with minimal dishing, erosion, and defects (<0.1/cm ). It reduces the cost of consumables, replacing expensive copper slurry with a low-cost electrolyte chemistry. Thin, uniform copper film and barrier/liner materials are removed using very low downforce (<1.0 psi). The tool features key process
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The use of alkenyl succinic
of calcium carbonate filler or coating. The level of carbonate in the waste would vary from delivery to delivery, causing consequent fluctuations in the pH of the machine system. 2) There was an increase in the number of times a particular fibre would go around the waste recycling loop - sometimes being