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Making Choices for Coating with a Laminating Adhesive

(Magazine)

September 30, 2001, ... of travel through a laminator. The substrate being coated will experience unwinding, coating with adhesive, drying for aqueous or solvent systems, lamination in a nip, and rewinding. It also will pass ...

More Causes, More Cures For Web Scratches

(Magazine)

July 31, 2001, ... for scratches in the web path. One likely source is any set of nipping rolls consisting of one driven and one idler roll that are used to isolate web tension. Standard construction of these rolls dictates ...

Slitter Savvy: Visual Roll Defects & Remedies

(Magazine)

July 31, 2001, ...  Start with proper tension, nip and/or torque. Splices: These necessary evils normally are due to web breaks or cutting out defective material in a parent roll. Most customers will allow up to three ...

Polymers/Laminations/Adhesives/Coatings/Extrusions

(Magazine)

July 31, 2001, ... coating station deckling devices. This prevents over coating at the edge of the material. Critical elements are the tension isolating pull rolls that set the web tension in the coating nip. Beyond the ...

Division Conference Offers Varied Program

(Magazine)

May 31, 2001, ... for greenhouse films, new methods to manipulate light inside a greenhouse to help control plant diseases, and additives that improve oxygen and UV barrier properties for protection of packaged goods.  ...

WEB SOLUTIONS

(Magazine)

April 30, 2001, ... the web wraps in the contact roll nip. The amount and type of contact roll texturing required usually is a function of how much boundary air is needed for a specific product. There are many ways to ...

Web Handling...Making a Slitter/Winder Upgrade Work for You

(Magazine)

March 31, 2001, ... solid surface rolls in a vacuum chamber. Nip rolls should never be used for tension isolation unless there is no other alternative, because they can damage the web, especially clear webs. Properly designed ...

Materials

(Magazine)

March 30, 2001, ... LLDPE is the heat-seal layer. Take Nip Impressions Quickly and Accurately Sensor Products Inc., East Hanover, NJ; 973/884-1755 Pressurex nip impression sensor films are custom tailored for determining ...

A Primer on How to Put Substrates Together

(Unprinted Rolls)

February 28, 2001, ... the nip formed by two rolls. Two substrates also enter the nip by traveling over each roll. The extrudate is therefore the center part of a sandwich material. The same factors mentioned above — flow, substrate ...

A Glossary of Descriptive Terms - Fifth Installment

(Magazine)

January 31, 2001, ... intended to improve the technical communication between new and seasoned members of the converting industry. - Nip rolls: Normally a set of two rolls (the set may be made with more) that have parallel ...

A Glossary of Descriptive Terms, Fourth Installment

(Magazine)

December 31, 2000, ... the wraps of the winding roll by utilizing the stack compression available in the winding wraps. The magnitude of contact area pressure that is exerted in the lay-on roll nip determines the amount of boundary ...

Products

(Magazine)

November 30, 2000, ... Can be used with unwind brakes (pneumatic or electric); unwind motor; surface winder; clutch winder; center winder with taper tension; and for intermediate tension requirements (between motor-driven nips). ...

Directory of Pilot Lines/Labs A-L

(Magazine)

October 31, 2000, ... rotogravure, offset gravure, wirewound bar, nip-fed reverse knife/roll Coating techniques: Meyer rod, two-sided Annual sales: Less than $20 million No. of lab employees: 7 B.F. Perkins 701 Jefferson ...

A Glossary of Descriptive TermsSecond Installment

(Magazine)

September 30, 2000, ... by not disturbing the steering device with minor web edge flutter. Deflection : Usually used to describe the maximum amount of bending that takes place when a force such as a nipping roll is applied ...

How to Make Anilox Roll Improvements Work for You

(Magazine)

August 31, 2000, ... "the basics" by discussing a few situations where the system is out of control and needs "fine tuning." When rubber nip rolls are used instead of doctor blades, they cannot provide precise control of ...

A Glossary of Terms to Help Avoid Failure to Communicate

(Magazine)

August 31, 2000, There are many terms used to describe similar things in the converting industry. These vocabulary differences can present communication problems around There are many terms used to describe similar things ...

Bagmaking Operation Is There When Customers Call

(Magazine)

April 30, 2000, ... height of the die is less than 40 in., the increased centerline distance from the die to the nip increases cooling and throughput rates. The shorter design also significantly reduces polymer residence ...

Selecting the Right Tensioning System for the Application

(Magazine)

April 30, 2000, ... (0.5 oz-in.-65 lb-in.) in applications such as film rewind/unwind spools or bobbins, nip rolls and pulleys, magnetic clutches and brakes have many advantages. They improve consistency [e.g., thickness], ...

Clean Room Environment Makes Excellence a Priority

(Magazine)

January 31, 2000, ... saw that we got what we ordered." "It's a simple design," Rupp adds. "All we did was take their nip roller and turn it into a laminator. Every machine has to have a nip and a drive, so we just put special ...

Getting the most value from your extrusion coater.

(Magazine)

November 30, 1996, ... in its own experiments to test the adhesion benefits derived from ozone application at the nip roll in the extrusion coating process. This on-going adhesion enhancement research is done in conjunction ...