Cork Tech Talk Blog

What is Viscosity? 

Viscosity tells us how thick or thin a liquid is. Viscosity is the property of a fluid that causes it not to flow easily because of the resistance of its molecules. When we use coatings, we need to understand viscosity, because it is key to accurate application, and a finished coated product that achieves target design.

Read more: What Is It About Viscosity?

The Green Movement

Probably the most basic understanding of the Green Movement is the support of environmentally friendly products, while opposing those that give the potential to pollute or otherwise harm the environment. However, worldwide the Green Movement has moved on to have a broad political agenda. The movement can be traced back in history to the 1970’s and further to the 1930’s, and even earlier. 

Read more: Green, Sustainable & A Smaller Carbon Footprint

Nearly 7 million tons of coated paper, paperboard and cardboard, are manufactured worldwide annually. The dominant coating material is petroleum based polyethylene (PE). Currently, alternative coating materials that don’t cause environmental harm throughout their life cycle are being sought because of consumer, political, and legislative pressure to reduce fossil fuel based plastics use. 

Read more: Replacing Poly (PE) Coated Paper & Board

UV Energy Curing Products 

UV energy curing inks, coatings and varnishes provide the printer with many advantages and benefits over so called conventional products. These conventional products may be solvent or aqueous types in the case of flexo and gravure or oxidizing types in the case of litho or letterpress or a variety of types in the case of screen printing. 

Read more: UV Inks & Coatings Offer Advantages When Foil Stamping

From Traditional Printing to Digital Printing 

Digital printing has been advancing at an amazing pace since we first discussed the subject in 2008 describing its expansion into the various graphic arts markets. These included (POP) point of purchase, labels, commercial printing, folding cartons, billboards, specialty printing, and vehicle and building wraps. 

Read more: Digital Printing Takes On Packaging & Folding Carton

High Temperatures and High Humidity 

June brings on summer in the northern hemisphere and with it the possibility of high temperatures and high humidity. The last decade has brought on several unusually hot summers and even warmer than usual winters. Whether or not global warming is caused by industrialization and its practices or the result of a natural global cycle, we are faced with coping with the extremes.

Read more: Is it the Weather?

About CORK-CLEAN™

Cork’s CORK-CLEAN™ UV blanket, roller wash, and system flusher for UV inks and coatings is your answer for fast, effective, and safe clean-up. CORK-CLEAN™, formulated specifically as a companion wash-up product for Corks’ Green20™ and Greensoft™ UV coatings, has proven to be effective as an equipment, blanket, roller, and anilox wash for all commercial UV inks and coatings. 

Read more: Cork-Clean™ Boosts Productivity

Preprint

Preprint is the term used to define roll to roll printing of the outside liner of a corrugated box, before corrugating and converting operations. In corrugating, the corrugated medium (fluting) is glued between the preprinted liner and the inner liner, giving the structure rigidity, strength and cushioning. During corrugating the liners pass over heated plates curing the glue, and subjecting the face of the liners to high heat and pressure such that preprinted inks must be protected.

Read more: High Graphics Corrugated Preprint Excels with Top Coatings

We Are Custom Formulators

We are Custom Formulators.  We can custom tailor a solution for your coating needs, based on your requirements and equipment. 

We are a team of Chemists, Print Managers, and Coatings Experts. 

Let us help improve your finished product. Expert Help - Contact Us

About the Author

Elmer W. Griese Jr, having accumulated 35+ years of knowledge working in the coatings and printing ink industries has now authored the Cork Tech Talk News, newsletter since 1992 producing 112 issues. He remains dedicated to educating and illuminating technological progress that offers the potential to advance coating technology and its applications.

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