工业静电控制

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Fraser Static China

Static Electricity

How is Static Generated? The main causes of static electricity are: Contact & Separation between two materials – including friction, travelling over rollers etc. Rapid heat change e.g. material going through an oven, or polymers during injection moulding. High energy radiation, UV, X-ray, intense electric fields. Cutting action e.g on slitter-rewinders, sheet cutters, machining of plastics. Induction – standing in the electric field generated by a static charge or handling charged products and materials. Contact and separation is probably the most common cause of static in industry where film and sheet are being processed. It happens when material unwinds or passes over a roller. When the material touches the roller a small charge flows from the material to the roller causing an imbalance. As the material leaves the roller the voltage is magnified like the separating plates of a capacitor. The size of the resultant voltage is limited in practice by the breakdown strength of the surrounding materials, surface conduction etc. You often hear small cracks, or static discharges, as the material leaves the roller. This is where the static has reached the breakdown strength of the surrounding air. The plastic film is neutral before the roller, but as the film separates from the roller electrons flow onto the film giving it a negative charge. The remaining positive charge on the roller will disappear quickly if it is an earthed metal roller.

News

As part of Fraser Anti-Static Techniques ongoing commitment to our staff development, two of our Static Control production team have taken up the offer of an apprenticeship. Alex Dixon and Jim Smith will complete an Engineering Course in Mechanical Manufacture bringing a wealth of new ideas and experience to our well rounded production department. Each member of staff is offered the opportunity and encouraged to complete formal vocational training and the benefits to our business have been tangible. We have measured improvements in areas such as customer service, fulfillment, management, stock maintenance and more. JIM SMITH ALEX DIXON

Shanghai Fraser Static Technology Co. Ltd

上海孚蕊哲静电科技有限公司
上海市田州路159号
15单元501室

Fraser Static China Fraser CN Fraser China

Fraser Anti-Static Techniques UK
Scotts Business Park
Bampton, Devon
UK – EX16 9DN

Fraser Anti Static UK Fraser UK Fraser Anti-Static UK

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