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In-house sheeting promotes growth and quality

(Magazine)

February 29, 1996, ... efficiency during roll changes, J. MacKenzie selected shaftless, self-loading roll-stands that eliminate the need for an overhead hoist when loading rolls. The operator simply moves the roll into place ...

Core selection - the difference between success and failure.

(Magazine)

January 31, 1996, ... inner diameter is required for the core to fit properly on the chuck or shaft, which is vital for proper unwinding and to maintain the proper web tension during the printing process. If the core I.D. is ...

Don't forget your unwind

(Magazine)

January 31, 1996, ...  Wilkes notes that, in general, there are five different types of unwinds: shafted, shaftless, center driven, surface driven, and turret. A typical shafted unwind has three main advantages, says Wilkes: ...

New measurement technology improves web control.

(Magazine)

January 31, 1996, ... or directly on the roll shaft end. The signals from the transducers are enhanced in various ways by the central processing electronics, which, in turn, provide system output signals to tension controllers ...

Brake and clutches improve to meet industry demands.

(Magazine)

December 31, 1995, ... but the thermal characteristics of aluminum. "The weight is one-third that of cast iron. This translates into low inertia, drastically reducing overhung weight, shaft load, and sizing and reducing tension ...

Examining trends in drives and motors

(Magazine)

December 31, 1995, ... (DTC). There is no modulator and no need for an encoder to feed back information about motor shaft speed and position. The DTC control incorporates fast digital signal processing hardware, resulting in ...

Opportunities abound in an emerging Indian market

(Magazine)

December 31, 1995, ... as high as 120% on air shafts, for example, meant that the country had to make do with less sophisticated machinery. Today's duties, half that amount, should drop to 25% or below in the next year or so.(*) ...

Tissue converter accrues benefits of AC servo drives

(Magazine)

September 30, 1995, Wepa & Co., a German tissue converter, discovers firsthand the advantages afforded by electronic line shafting on its new C.G. Bretting converting machinery. Wepa & Co., a German tissue converter, discovers ...

Cylinders and rolls - a quiet revolution

(Magazine)

July 31, 1995, ... shaft technology. Although it's true that cylinders and rollers are an old technology, predating the industrial revolution, savvy converters realize they are critical components, especially with the ...

Bagmakers add a strong link to quality chain

(Magazine)

July 31, 1995, ... centershaft-driven two-position unwind stands with a capability of handling rolls up to 36 in. in diameter. This feature is designed to decrease setup time by approximately 50% between roll changes.  ...