Tag: MicroTip

  • 3 Ways to Conquer UV Ink Spitting in your Pressroom

    3 Ways to Conquer UV Ink Spitting in your Pressroom

    Ever seen your perfect print job turn into a messy, chaotic artwork? If you’re a label printer, you’ve probably faced the nightmare of UV ink spitting. But don’t worry, we’ve got the solutions you need to reclaim your sanity! 

    1. Start with Some TLC

    Ensure your equipment is in top shape. Clean the anilox roll, inspect the doctor blade holder or chamber, and lower the doctor blade pressure for a perfect wipe. Minor tweaks can work wonders. 

     2. Opt for New Anilox Roll Engravings

    Traditional engravings can hinder UV ink flow. Because UV inks have a viscosity of 5-7 times greater than that of water-based or solvent-based formulations, different anilox configurations may be required. New elongated hexagonal cell engravings, or even newer channeled engravings, can improve ink transfer and reduce or eliminate ink spitting.  

     3. Try a Different Doctor Blade

    Doctor blades are an easy variable to change when up against UV ink spitting. It’s a low-cost part with a big impact. TruPoint polymer doctor blades are a fantastic choice for handling UV inks. Why? Our unique MicroTip edge ensures consistent ink metering but more importantly, TruPoint polymer materials have a lower surface energy than steel.  

    This lower surface energy reduces the attraction of the UV ink to the doctor blade and allows for a cleaner ink transfer. Steel’s high surface energy attracts UV ink, causing it to accumulate on the backside of the blade and then release. This is UV ink spitting! Ink Spitting explained

     Taming UV ink spitting can be easier than you think. Regular maintenance and the right doctor blade can make all the difference. Don’t let ink-spitting drive you crazy; we’re here to help! 

     

    Request a Free TruPoint Doctor Blade Sample
  • New, Improved MicroTip®

    New, Improved MicroTip®

    blankSince Flexo Concepts launched TruPoint Orange® with a MicroTip four years ago, it has been an overwhelming success in tag and label plants. Printers around the world have embraced the blade’s capabilities with enthusiasm. OEMs have endorsed Orange and are shipping the blade with new press installations, and industry co-suppliers have co-marketed the blade at trade events to demonstrate its unique benefits.

    But despite the success, we haven’t stopped working to improve our revolutionary blade innovation.

    By keeping our “finger on the pulse” of the industry, we continue to learn what issues today’s printers are facing. Using advanced equipment, our R&D folks experiment with blade materials and tips in our Doctor Blade Innovation Lab to come up with solutions, and our engineers deliver concepts that simplify life in the pressroom.

    MicroTipFlexo Concepts has expanded its range of blade thickness and MicroTip combinations on its Orange blade so printers can customize blades for their specific applications. Options range from material and tip duos that extend blade life in most process work to more robust alternatives for white decks and coarse anilox rolls.

    Recently, our engineers modified the MicroTip design to further improve metering and blade life. A minor enhancement to the geometry of the tip doubles its stiffness at the contact point with the anilox roll. This refinement fortifies the strength of the blade and bolsters its impact resistance. The “new and improved” MicroTip delivers a cleaner wipe and lasts longer.

    Our culture of continuous improvement also extends to manufacturing. Investing in advanced equipment allows us to achieve better precision and tighter tolerances in our blade production. In response to the industry’s struggle with start-up issues, we have improved finishing techniques to produce a smoother finish on the MicroTip. As a result, the blade requires no wear-in period and eliminates start-up lines.

    At Flexo Concepts, we like to go above and beyond in what we do. Therefore, even after perfecting a new blade technology, we keep working to make it better.  The latest design update to the MicroTip edge and improved “polishing” do just that. TruPoint Orange not only has the ability to replace steel in high line screen applications, but now meters even better and eliminates start-up lines. What was once used mostly as a “fix-it” blade (to prevent UV ink spitting for example) has proven that it can compete for best “all-around” blade in the narrow web pressroom.

    Request a Free TruPoint Doctor Blade Sample
  • Hybrid Printing Technology Combines the Best of Both Worlds

    Hybrid Printing Technology Combines the Best of Both Worlds

    The TeaToaster.  An appliance that makes tea and toast?  How nice would it be to have the option of preparing your breakfast and morning beverage at the same time??!  (It doesn’t actually make toast, but a good idea, right?)

    There are also innovations in the printing industry that combine functionalities to make life a little easier for press operators.

    Today’s brand owners are more demanding than ever, looking for variable data and versioned graphics, short lead times, fast turnarounds and, of course, competitive prices.  These forces are driving industry innovation, and Mark Andy and Flexo Concepts® have led with hybrid technologies that bring flexibility and efficiency to the modern-day pressroom.

    Hybrid press technology

    In his 2016 article, Hybrid Presses – Combining digital and conventional printing offers converters the best of both worlds, Associate Editor of Label & Narrow Web Greg Hrinya compares hybrid press technology in the label printing market to that in other industries – a hybrid car which relies on multiple power sources or hybrid golf club that features the qualities of an iron and a fairway wood.  Similarly, new hybrid presses combine the benefits of digital with the power of flexo in one piece of equipment.  For printers, according to Hrinya, “The goal is to meet demand for large run flexo orders on the same press that is capable of handling a 500-label order from a local winery.”

    Mark Andy’s Digital Series – best of flexo and digital

    Mark Andy’s Digital Series, a 2017 technical innovation award winner, does just that.  Built upon the industry-leading Performance Series architecture, these presses leverage the advantages of digital technology with the proven capabilities of flexo.  The optimized hybrid platform is an efficiently designed, end-to-end workflow offering digital printing with in-line converting, decoration and finishing.  This happens all in a single pass and any size converter or job can be accommodated.  The machines run at printing speeds up to 240 fpm (73 mpm) and feature an intuitive user interface and consistent controls.  Operators can customize and enhance their production process to:

    • Increase throughput
    • Minimize cost of operation
    • Optimize process for short to medium runs
    • Maximize versatility
    • Create a superior user experience
    • Obtain reliability of proven P-Series platform

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    Flexo Concepts’ TruPoint Orange® – best of steel and plastic

    Just as Mark Andy’s Digital Series brings together the best of digital and flexo in one press, Flexo Concepts’ TruPoint Orange combines the advantages of both steel and plastic materials in a single blade product.

    At one time, steel doctor blades were the only option capable of providing the fine, consistent contact area with the anilox roll necessary to produce high-end graphics.  However, printers had to accept the risks of using steel – dangerous injuries and anilox scoring.

    Although plastic is safer to handle and doesn’t produce metal fragments that can cause scoring, traditional plastic doctor blades must be engineered thicker to provide enough rigidity to meter the anilox.  This thicker contact area can’t meter high line screens effectively, so plastic blades were ruled out as an option for narrow web printers.

    That is, until the hybrid doctor blade came along.

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    A product of Flexo Concepts’ Doctor Blade Innovation Lab, TruPoint Orange is constructed from a next generation polymer material and engineered with MicroTip® technology in a combination that is capable of achieving a fine, consistent contact area with the roll.  The blade can effectively produce high quality graphics as well as steel while retaining the benefits of traditional plastic – no dangerous cutting edge or metal fragments that will damage the anilox roll.  Orange doctor blades are able to:

    • Effectively meter line screens up to 2,000 lpi (785 L/cm)
    • Reduce pressroom injuries
    • Eliminate anilox scoring
    • Prevent UV ink spitting even at high press speeds
    • Handle specialty coating chemistries

    As the label and packaging market evolves, printers need products that can keep up.  With their hybrid technologies, Mark Andy and Flexo Concepts are at the forefront in developing innovative solutions that combine the best of known technology to help printers operate efficiently and competitively.  What the TeaToaster did for breakfast (in theory), the Digital Series and TruPoint Orange have done for printers:  combine two technologies in one to bring maximum success to the narrow web pressroom.

    Learn More about the Mark Andy Digital Series
    Request a Free TruPoint Doctor Blade Sample
  • The 5 Ws of TruPoint Doctor Blade Tips

    The 5 Ws of TruPoint Doctor Blade Tips

    This infographic is a beginner’s guide to Doctor Blade Tips, providing a brief overview of the 3 main tips offered with TruPoint doctor blades. Viewers will uncover the following 5 Ws of TruPoint doctor blade tips:

    1. Who – Who (which industry) predominantly uses this blade tip option?
    2. What – What does this doctor blade tip look like?
    3. Where – Where is this doctor blade found in a chambered ink system?
    4. When – When a certain anilox line screen is used, which doctor blade tip is the best option?
    5. Why – Why is this doctor blade tip used for all of the above?
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  • New Polymer Doctor Blades with MicroTip Are Best for Applying Special Effects Coating

    New Polymer Doctor Blades with MicroTip Are Best for Applying Special Effects Coating

    Anyone who uses doctor blades for printing knows the range of options available today.  From the thickness of the material to the tip configuration, a doctor blade’s design has a direct impact on the job it will do.  While traditional tip options have ranged from straight to rounded to lamella, the new kid on the block, “MicroTip,” offers printers a smart choice when applying special effects coating.

    Special effects coatings are challenging

    More and more, packaging companies are using specialty coatings to differentiate their brands and create a tactile and visual experience for consumers.  However, special coatings such as glitter, grit, soft-touch, metallics and pearlescents present particular challenges for the printer.  These coatings have high viscosities and contain larger particles which make it difficult to accurately control the amount of coating

     

    being applied. (UV chemistries, common in specialty coating applications, have a viscosity of 5-7 times that of water and solvent-based formulas.)  This higher viscosity applies extra pressure to the metering blade, resulting in hydroplaning or “spitting” (especially at high line speeds), and increases coating consumption and waste.  In these cases, a customized blade solution is often necessary to control the lay-down of coating.

    New Polymer Doctor Blades with MicroTips can help

    Doctor blade manufacturers have found a way to make new polymer doctor blade materials that can overcome the limitations of steel in specialty coating applications.  By engineering a modified lamella tip, known as a “MicroTip”, on these materials, they have introduced a doctor blade product that offers the best of traditional plastic and steel.

    Why do they work?

    When used to apply special effects coating, steel blades are subject to accelerated blade wear from the coarse anilox engravings and corrosion from the harsh coating chemistries.  Today’s new polymer materials are compatible with all coating formulas and do what plastic blades are known to do best: last longer.

    MicroTip profilesThe blades can be engineered to a full range of size and profile combinations to optimize metering performance with the higher viscosity and large particulate formulas.  They range in thickness from .027”/.7mm to .050”/1.25mm to offer varying degrees of stiffness, rigidity and deflection.  These properties combined with the new MicroTip edge allow the blades to achieve a fine contact area with the anilox roll and deliver a fluid transfer of coating to the blanket with no spitting or slinging, even at high press speeds.  Add to this a range of MicroTips, (M10, M15 and M25) and these blades can be customized for a “perfect fit.”

    Doctor blade optimization for special effects coating

    The choice of blade thickness and tip will be determined by the anilox configuration, which is driven by the viscosity and solid load of the coating.  Typically, higher line screens and lower cell volumes will require a smaller MicroTip (an M10 or M15 for dull/satin/gloss coatings for example), but as line screens decline and volumes increase, a MicroTip providing a larger contact area (M15 or M25) will perform better.  By optimizing their next generation polymer doctor blades with the appropriate MicroTip, printers are able to achieve longer blade life in these applications than with steel.

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    If you’re a printer struggling with special effects coating, consider switching to a next generation polymer doctor blade with a MicroTip.  A magical combination of advanced material and tip might be just what you need to achieve a perfect lay-down of coating with longer blade life to boot.

    Request a Free TruPoint Doctor Blade Sample
  • Polymer Doctor Blades are Safe Substitutes for Steel in Flexible Packaging

    Blade_Safety_Accident_Free_Days_215x275If you are using steel doctor blades, you are probably well aware of the risk of serious cuts from handling the blades. Pressroom injuries can be expensive in terms of morale and accident-related expenses. Today’s next generation polymer blades combine the best of traditional plastic and steel blades and provide safe substitutes for steel in flexible packaging applications.

    As steel doctor blades wear, their tips become honed through contact with the anilox roll, leaving razor-sharp edges. Press operators need to be extremely careful and wear protective gloves when removing the worn blades from the press to avoid injuries.

    Until recently, steel was the only material capable of producing the high quality print required in flexible packaging applications so printers had no choice but to accept these risks. While plastic blades were safer, they were not able to achieve a fine enough contact area with the high line screen rolls.

    blankToday’s next generation polymer blades act as a hybrid between steel and plastic and offer a safe alternative to steel. The combination of an advanced polymer material and an innovative “MicroTip®” design allows these blades to perform in highly demanding applications where previously steel was the only option. Due to their material composition, the new polymer blades are safe to handle even when worn. Converting to these blades will reduce lost-time accidents and can save a printer a lot of money in terms of workman’s compensation insurance rates, medical bills, labor replacement expenses and press downtime.

    When it comes to the pressroom, safety is everyone’s concern. Flexible packaging printers no longer have to accept the danger that comes with using steel blades to get the print quality their customers demand. To greatly reduce the risk of injury and associated costs, try substituting next generation polymer blades for steel.

    Request a Free TruPoint Doctor Blade Sample
  • New Polymers Meter Like Steel Doctor Blades

    blankSteel doctor blades used to be a printer’s only option to produce high-end graphics.  It wasn’t because he didn’t want longer blade life and the safety benefits that came with using plastic, steel was simply the only material that could sufficiently meter a high line screen roll.  Not anymore!  Today’s next generation polymers and advanced tip engineering have at last resulted in a non-metallic doctor blade with the metering quality of steel.  This blade can replace steel doctor blades in a full range of flexo printing applications from solids and lines, to reverses and fine print, to screens and process work.  Here’s why.

    Steel Doctor Blades vs. Traditional Plastic

    Due to its thinness and stiffness, steel has been the only blade material that could achieve a fine point of contact sufficient to execute a clean wipe on a high line screen anilox roll.  By comparison, the characteristics of traditional plastic doctor blades require them to be thicker to provide the same rigidity.  While they have other benefits in terms of safety and blade life, their thickness prevents them from maintaining a fine contact area with the anilox.  As they wear and their contact area with the anilox roll grows, plastic blades produce changes in tonal value and dot gain when metering high line screens.  For this reason, they have historically been limited to  jobs with low to modest graphics requirements.

    Next Generation Polymers

    Now, specially formulated polymer doctor blades can compete with steel in the most demanding graphics applications.  Unlike traditional plastic, the stiffness of the next generation material with a precisely engineered MicroTip™ edge allows the TruPoint Orange doctor blade to achieve and maintain a fine contact area with the anilox roll.  Orange can deliver effective metering on line screens up to 2,000 lpi (785 L/cm) and produce graphics of the highest quality.  The following diagrams compare the contact areas of traditional plastic, steel and next generation polymer blades:

    Doctor Blade Contact Area Comparison
    Doctor Blade Contact Area Comparison

    As shown, the contact area of a worn traditional plastic blade grows to .060″ (1.52mm) compared to a contact area of .016″ (.40mm), for a worn steel blade.  The next generation polymer is able to maintain a contact area of .012″ (.305mm), equal to or smaller than that of most steel doctor blades, throughout the life of the blade due to the edge design.  The engineered tip wears slowly and evenly and delivers consistent ink film thickness for the duration of the print job.

    Today’s innovations in polymer doctor blades offer printers a viable alternative to steel.  A combination of advanced materials and new tip technology has yielded a blade that meters as well as steel on the highest line screens yet retains the benefits of traditional plastic.  Printers no longer have to compromise on anilox scoring, blade life, and safety to fulfill the most demanding graphics requirements!

    Request a Free TruPoint Doctor Blade Sample
  • UV Ink Spitting is a Dirty Habit

    blankAs competition for shelf space heats up, brand owners are looking to create more compelling-looking products. That means prettier graphics, more vivid colors and unique packaging. Today’s narrow web printers, also facing intense competition, are turning to UV inks and specialty coating formulas to produce higher print quality, speed up turnaround times, increase throughput and reduce downtime. Unfortunately, using a steel doctor blade to meter these chemistries often result in the UV ink spitting onto your print job, causing a speckled appearance. Where steel falls short, the TruPoint Orange® next generation doctor blade may be the solution in these applications.

    Eliminate UV Ink Spitting with TruPoint Orange

    The surface energy and flexibility of a steel blade can impede a smooth transfer of ink to the plate. The dyne level of a steel blade is higher than that of TruPoint Orange, causing the ink to have a greater tendency to adhere to the blade. With Orange, the characteristics of the material give the blade a significantly lower dyne level than steel, decreasing the attraction between the doctor blade and ink and facilitating a more fluid movement of ink to the plate.

    ink spitting steel doctor blades vs plastic doctor bladesAlso, UV ink has a normal viscosity of 5-7 times that of water and solvent-based inks, and its thixotropic properties (ability to thin out when agitated) make it transfer differently on press. This thicker consistency applies excessive pressure to a steel metering blade, often causing the ink to sling off, or “spit,” especially at high press speeds. The TruPoint Orange doctor blade prevents UV ink spitting. The blade’s tip provides enough stiffness to maintain a strong contact area with the anilox roll and prevent ink from sliding under the blade.

    Specialty Inks and Coatings Are Abrasive

    Specialty coatings and tactile finishes such as glitter, pearlescent, textures and soft touch, are being used to enhance the look of product packages, but the same challenging properties of UV inks also exist in these formulations. They have high viscosities and contain large particles, making it difficult to accurately control the volume being applied. These chemistries, and coarse anilox surfaces used to apply them, are extremely abrasive to steel doctor blades – printers consume blades faster which increases downtime and costs. TruPoint Orange next generation polymer blades are highly abrasion-resistant and chemically compatible with all ink and specialty coating formulas; they last longer and minimize press downtime for blade changes. Click Here to Read “5 Ways to Conquer UV Ink Spitting”

    As the industry evolves to keep up with the demands of the market, printers are faced with new challenges. The ink and coating formulas being used to make products stand out on the retail shelf and improve pressroom efficiency are difficult to meter with steel doctor blades. Due to its material properties and tip design, TruPoint Orange can help by reducing downtime and costs associated with UV ink spitting and accelerated blade wear.

    Request a Free TruPoint Doctor Blade Sample
  • Plastic Doctor Blades – Advanced Polymers Compete with Steel

    Plastic Doctor Blades – Advanced Polymers Compete with Steel

    blankWhile steel doctor blades used to be the only option to produce high-end graphics, a printer had to deal with the shorter blade life and pressroom injuries that came along with using the material. No more! Recent innovations in materials technology and tip engineering have at last resulted in polymer doctor blades that can compete with steel and also resolve a number of common problems in the pressroom.

    Steel doctor blades are thin and rigid which allows them to achieve a fine contact area with the anilox roll. A fine contact area is required for the blade to achieve an effective wipe on high line screen rolls used in more demanding graphics applications. Traditional plastic doctor blades, on the other hand, have long been preferred for their longer life in less demanding graphics applications. Plastic blades had to be engineered thicker in order to provide enough rigidity to maintain good contact with the anilox roll and achieve a sufficient wipe. The thickness and larger contact area prevented these blades from being effective when used to meter mid to high line screen rolls. While they lasted significantly longer and were safer to handle than steel blades, they tended to leave more ink on the surface of the roll; this produced dot gain and poor image quality in the printed piece.

    blankSteel Blade Disadvantages

    Despite its reputation for being the superior metering material, steel has many disadvantages. The blades wear quickly and need to be replaced frequently. Operators are also exposed to cut hazards when removing the worn blades from the press, and the metal fragments can come loose and score anilox rolls.  The environmental impact of using steel can also be significant. There are huge energy costs associated with the manufacture of steel blades as well as anilox resurfacing, and additional station clean-ups generate a lot of contaminated waste. Despite these drawbacks, steel was believed to be the only doctor blade option to execute a clean wipe on a high line screen anilox roll, leaving printers no choice.

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    New polymer doctor blade contact area is smaller than steel

    New Polymer Doctor Blades

    Today, specially formulated polymer doctor blades offer the best of both steel and plastic. Unlike traditional plastic doctor blades, the next generation material allows for a precisely engineered micro-tip which wears slowly and evenly throughout the life of the blade. The micro-tip edge allows the blade to achieve a fine contact area with the anilox roll and deliver effective metering on line screens up to 2000 lpi or 785 L/cm. The long and steady wear period of the next generation polymer doctor blade maximizes press uptime and allows for consistent ink film thickness for the duration of the print job.

    Compared to steel, the polymer material does not develop a dangerous cutting edge after use, and the worn blades are safe to handle. Also, the material will not separate, splinter or crack and produces no metal fragments that can lodge between the doctor blade and the anilox roll. A reduction in anilox scoring means better image quality, less downtime, less waste and lower roll replacement costs.

    Polymer doctor blades have come a long way in recent years. A combination of advanced materials and a micro-tip edge has produced revolutionary new doctor blade option for printers: a blade that can compete with steel in the most demanding graphics applications while retaining the safety and blade life benefits of traditional plastic.

    Request a Free TruPoint Doctor Blade Sample