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Coating Matters | Film Split Defects

(Coating/Laminating)

June 28, 2015, ... as the line speed increases, film split is more evident. Especially in the case of viscoelastic fluids, where the internal elongational parameters will allow for only so much movement before separation, ...

Coating Matters | The Effects of Viscoelastic Behavior, Pt. 1

(Coating/Laminating)

May 25, 2015, ... understand the elastic nature, elongational testing needs to be completed. So what do you do if the elastic nature of the fluid dominates the viscous nature of the fluid? A new set of coating defects ...

TS Converting Reports Slitter Sales

(News | New Products)

March 09, 2015, ... narrow slits. The machines support narrow slit strips all the way from the slitting station to the rewind, reportedly preventing any movement or material elongation. Avon Adhesives, a UK converter of ...

EFI Acquires Polymeric Imaging’s Thermoforming Ink Technology

(News | New Products)

November 11, 2014, ... thermoforming and other high-elongation applications requiring exceptional ink durability and flexibility. Financial terms of the acquisition were not disclosed, but the deal is not expected to be material ...

K-Show 2013 & Upcoming Extrusion Coating Seminars

(Tom’s Poly Ploys)

October 23, 2013, ... and elongation) or reduced gauge (down gauging) or a combination of both depending on the application through the use of their ExceedTM and EnableTM mPE (metallocene-catalyzed PE) resins and more recently ...

Web Handling | To Break or Not To Break--What is the Tension?

(Web Handling)

December 02, 2012, ... A steel web will be harder to break than a polyethylene web. (Harder to break = higher critical tensile break stress.) The best way to find your web’s break or yield point is to perform a tensile-elongation ...

Coating Matters | Understanding Rheology

(Coating/Laminating)

October 01, 2012, ... of the material. Shear viscosity is resistance to deformation between layers of a polymer, while elongational viscosity is resistance to deformation from stretching the polymer. Picture the polymers ...

Teknor Apex PVC Film Suited for Medical Uses

(Flexpack)

September 05, 2012, ... of 2,700 psi (18.6 MPa), and elongation of 300%. Richard Vega, manager of the Teknor Apex Vinyl Div. film calendering facility, says the company’s calendering process used for producing the film, the ...

WHQuiz Answer #5 - Draw Control Pros/Cons

(Web Handling)

February 22, 2012, ... where elongation is a better predictor of damage than tension. Draw control is used in machine direction registered processes. The speed adjustments of closed-loop tension or torque control would create ...

WHQuiz Answer #6 - Roller Alignment

(Web Handling)

February 22, 2012, ... webs with lower elastic modulus that run at higher elongations, I can imagine loosening this specification to 0.5-1.0 milli-radians. There are certainly many rollers in any process that are much less ...

WHQuiz Answer #1 - The Right Tension

(Web Handling)

February 20, 2012, ... you determine the target web handling tension for a give product in units of force or force per width? Answer to WHQuiz#1: Test your web in a tensile elongation tester per ASTM D638 or ISO 527. Find ...

Slot Die Coating | The Pressure Is On

(Adhesive Coating)

December 01, 2011, ... coating. This coating technique is typically run at slower line speeds and is a function of the fluid’s elongational viscosity. Curtain | Curtain coating allows for increased production speed. Free ...

Cortec Corp. Offers Biodegradable Film with Corrosion Inhibitor

(Flexpack News)

October 16, 2011, ... elongation than low-density polyethylene (LDPE) films. It is certified under DIN CERTCO DIN EN 13432 (Europe) and Biodegradable Products Inst. ASTM D6400 (USA). It is heat and water stable and does not ...

Technical Report: A Rheology Lesson

(Coating/Laminating)

January 31, 2011, ... while the resistance to stretching is elongational viscosity. What's the difference, and why are the differences important? Both can be understood if you imagine the polymer as a collection of rubber ...

Monomer Has Many Uses

(Coatings)

November 30, 2010, ... surface tension, making it a good diluent and substrate wetting agent. Reportedly improves adhesion promotion and elongation; demonstrates excellent weathering resistance; and is an effective comonomer ...

Web Lines: Web Length per Roller Revolution=?

(Editorial)

September 30, 2010, ... only to 99%. If you want to accurately estimate the feed rate, you need to consider other factors, including the effects of web thickness, web tension, nipping compression, and rubber covering elongations. ...

Click To Pick

(New Products)

February 28, 2010, ... overall thickness or raw materials content. Microlayer technology is said to allow extrusion processors and converters to achieve increases in impact strength, elongation, oxygen and moisture barrier, ...

Multiplying Key Coex Layers Improves Properties

(New Products)

February 28, 2010, ... is said to allow extrusion processors and converters to achieve increases in impact strength, elongation, oxygen and moisture barrier, and other properties. Potential applications range from industrial ...

Bagmaking: Cleaning Up on F/F/S

(Substrates)

January 31, 2010, Plastixx FFS Technologies, the Montreal-based converter, manufactures gusseted tubing for packaging applications, utilizing a patented, breathable back-seam Plastixx FFS Technologies, the Montreal-based ...

What Is the Right Tension?

(Web Lines)

November 30, 2009, ... they will snap back to their original dimensions when tension is removed. Find the yield or break points in terms of stress and strain from tensile-elongation testing. Find the yield point (or break ...