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Curtain Coating Technology Can Mean Big Benefits

(Magazine)

February 29, 2000, ... coating methods. The term "premetered" indicates that only the exact amount of fluid to be coated onto the web is fed to the coating head. This feature, and the associated lack of excess fluid at the coating ...

Clean Room Environment Makes Excellence a Priority

(Magazine)

January 31, 2000, ... features a smooth chrome roller. Maximum web width is 55 in. (1,400 mm). Custom-Made Simplicity Also housed in the clean room is a Dusenbery Model 835 slitter/rewinder that was adapted to function ...

Oxide-coated films are still finding their market niche

(Magazine)

November 30, 1996, ... consists of a 64-micron top web of PET/SiOx/PE and a 250-micron forming web of a paper-like foamed PP with an ethylene vinyl alcohol (EVOH) barrier layer. The US is the smallest market, consuming less ...

Getting the most value from your extrusion coater.

(Magazine)

November 30, 1996, ... of the line include run speeds to 3,000 fpm; coextrusion from up to three different extruders to manufacture up to five layers; extrusion lamination of two flexible webs; and the ability to handle virtually ...

NOVA and Union Carbide to build ethylene plant

(Magazine)

October 31, 1996, ...  Dusenbery Europe, Bedford, U.K., has exported the first audio tape slitter to Videolar in Brazil. The Model 809 for audio cassette tapes slits up to a 350-mm web into 84 tapes of 3.81 mm in width at ...

Partnering launches future growth in laminations

(Magazine)

August 31, 1996, As a long-time supplier to wire and cable manufacturers, Chase & Sons, Webster, MA, a div. of Chase Corp., is introducing innovative process technology As a long-time supplier to wire and cable manufacturers, ...

Perforating tear-resistant materials takes a big step.

(Magazine)

August 31, 1996, ... runout, web tension, operator proficiency, type of perf holder being used, etc. Percent of Hold "Percent of hold" is the percent of material remaining uncut after a stock is perforated. It is calculated ...

Pressure-sensitive line utilizes all-vector drive system

(Magazine)

June 30, 1996, ...  This allows "regeneration" and braking for the running tension control scheme. While load cells measure the actual web process tension, each sending a trim signal back to its drive, regulation accuracy ...

Green Bay gears up for specialty labels

(Magazine)

May 31, 1996, ... to jump-start the adhesive drying process." An electric IR oven begins drying the adhesive before the the web reaches the gas-fired, hot air oven, which then completes the drying process. The 30-ft, two-zone ...

Gravure gets easier

(Magazine)

April 30, 1996, ... imprinter that eliminates the purchase and storage of preprinted web stocks. The unit can imprint crisp, clear, large and small graphics, reportedly with gravur-type print quality, on all types of paper, ...

Paper characteristics: starting the job right

(Magazine)

April 30, 1996, ... process. Web-fed jobs, in particular, must be strong enough to withstand the stress of unwind and rewind operations. Therefore, uniform strength is necessary across and along the substrate. Paper strength, ...

Custom coating operation is a clean winner

(Magazine)

February 29, 1996, ... of unwind and rewind sections, two in-line tension controls, three web cleaners, one corona treater for enhanced laydown, and five ovens for precise drying. The system is capable of combining two web paths ...

Core selection - the difference between success and failure.

(Magazine)

January 31, 1996, ... Ovality is especially critical for very thin materials, as any core that is out-of-round can stretch the substrate, producing an inconsistent product or even a web break. * Straightness is critical ...

Don't forget your unwind

(Magazine)

January 31, 1996, ... in the web alone. "This is the case for very light materials or for very wide webs in which the steel core must be of massive construction," says Wilkes. Large-diameter unwinds normally require larger ...

Flexo/screen proves to be a winning combination

(Magazine)

January 31, 1996, ... in the US and seven overseas. At its York plant, the converter has a diverse range of equipment capable of printing up to eight colors at a maximum web width of 16 in. In addition to the Mark Andy 4120 ...

Brake and clutches improve to meet industry demands.

(Magazine)

December 31, 1995, ... or in any combination, and air pressure can be varied from piston to piston as well." About 10 to 12 years ago all electro-pneumatic controllers used strain gauge transducers (transducers sense web ...

Examining trends in drives and motors

(Magazine)

December 31, 1995, ... changes in proportion to the frequency change," says Wirth. "Torque control is critical to converting applications, because that's how you control web tension. An AC motor has an inherent amount of slip, ...

Tissue converter accrues benefits of AC servo drives

(Magazine)

September 30, 1995, ... the final folder, using a 3,000-rpm digital servomotor with a 150-amp amplifier. This section comprises seven slitting knives; five slitting knives cut the single roll of tissue into six smaller webs that ...

Doctor blades are the right Rx for gravure

(Magazine)

September 30, 1995, ... the doctoring must take place close to the nip point. With a conventional blade, chatter may be a limiting factor. The web path may restrict the high contact angle on some equipment. However, the major ...

Winders/Unwinders: Gettting Better Every Day

(Magazine)

August 31, 1995, ... defects, including corrugations, delamination, crepe wrinkles, stretching, wrinkling, blocking, cigars, bursts, out-of-round or eccentric cores, and the dreaded web break. Understanding this technology ...