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Small sensor continuously scans, measures and controls the weight of nonwoven materials during manufacture.

In the arena of on-line weight gauges, NDC Systems is unique with a small flashlight-sized sensor that measures the weight-per-unit area of nonwoven materials from just one side of the sheet. Compared to traditional transmission gauges that require a large source and detector on each side of the web, the NDC gauge has the advantages of easier installation and mountability, smaller space requirement, lower cost, and greater reliability because of its inherent simplicity.

Typical applications include measurement of diaper cover material in the range of 20 [g/m.sup.2], interlinings at 80 [g/m.sup.2], skin wipe cover stock at 15 [g/m.sup2], and heavier materials.

Coatings, adhesive weight, latex addition, and similar processes are measured by placing a sensor before the coater to measure the base material, and a sensor after the coater to measure the total of base and coating. After a predetermined lag to effect same-spot measurement, the two readings are subtracted to yield net coat weight.

NDC has developed a modular, building-block approach to gauging, allowing the user to choose from simple, fixed-sensor systems with digital readout of weight, to state-of-the-art systems featuring 19-inch color CRT split-screen displays with touch-screen controls for unparalleled ease of use and flexibility. Two-way communications with a host computer and optional automatic controls assure upward compatibility with ongoing plantwide automation. A midrange system combines a simple scanning gauge with a PC (user's choice) for display of sheet profile, X-bar and R charts, and more.

NDC has been supplying gauging systems to industry for over 24 years and has over 3000 installations worldwide. Whether the application calls for a simple gauge or a sophisticated system, NDC can help increase quality, save material, reduce waste, and permit faster start-ups.
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Title Annotation:10th Annual Show in Print of the International Nonwovens Industry; NDC Systems
Publication:Nonwovens Industry
Article Type:Brief Article
Date:May 1, 1992
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