Because clothing usually is electrically insulated or isolated from the body, charges on clothing fabrics are not necessarily dissipated to the skin and then to ground. ESD jackets and lab coats offer protection from electrostatic fields generated by clothing on the user’s body. ESD garments are worn whenever static damage is a concern.
ESD jackets differ from common work garments because they contain a grid of conductive fibers imbedded throughout the garment. The grid creates a “Faraday Cage” effect around the body of the operator, that shields charges generated from the operator’s clothing that could damage devices that are sensitive to static electricity.
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Cleanroom gowning procedures, and the extent to which one needs to gown up, differ depending on clean room class and application. For example in ISO Class 7 or ISO Class 8 clean rooms, frocks are often acceptable. However in ISO Class 5 or ISO Class 6 (or cleaner) clean rooms: coveralls, hoods, gloves, and shoe covers (also known as booties) are required. Precaution should be observed to assure that no sterile surfaces contact non-sterile surfaces during gowning, processing, or cleaning.
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In industries such as electronics, aerospace, medical device, pharmaceutical and automotive, manufacturers place significant emphasis on the cleanliness of their products. The shrinking geometries of devices combined with the need for higher product yields have increased the demand for clean packaging materials over the last several decades.
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We begin by discussing the particle contamination issues in gown up rooms. Operating personnel enter gown up rooms to prepare for entry into the final clean room environment where items are processed. Without any static mitigating techniques, the operators and their clothing are statically charged causing substantial particle attraction.
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Every manufacturing environment contains some degree of airborne particles that can negatively impact your product or manufacturing process. These contaminating particles may already be present in the environment, or they may be introduced into your manufacturing area by people or things entering into that space.
Depending on the relative sensitivity of your product or process to those contaminants, you may require a clean room for your production. But just how clean a working environment do you require? The answer to that question is quite simply: “How many contaminants do you need to eliminate?”
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A softwall clean room is exactly as the name implies, it has soft flexible walls rather than hard rigid walls. And, it is typically smaller in size than a traditional hard wall clean room. And while fixed wall clean rooms maybe the order of the day for large, more permanent manufacturing and assembly operations, softwall clean rooms are a cost effective alternative solution when size, flexibility, and possible portability are viable issues.
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