MACtac is a global company that always has been driven by innovation, discovering future customer needs and developing new products. If you have any question, plz kindly contact with me. Tax code: 3702520171 - Issue date: 06/12/2016. The dissolved substrate is dried in an oven to evaporate the remaining bonding material. 2. Life Cycle Assess., December, Int. A little bit of this is normal, but if the print doesnt lay flat after some gentle smoothing, it is a problem. 6. All Rights Reserved. The adhesive bond can only be as good as the anchoring of the layer it is adhering to. General haziness or cloudiness in the film after lamination. Further estimation results confirmed the above findings, indicating that solventless production can reduce VOC and pollutant emissions from sources and thus promote cleaner production. It is sometimes essential to smooth out an item as it passes over the feed table and through the rollers to ensure an even . By Brendan O'Neill November 1, 2008 Once a fringe player, solventless adhesives have become a workhorse in the laminating industry. Six environmental indicators, including global warming potential (GWP), photochemical oxidant formation potential (POFP), primary energy demand (PED), water use (WU), acidification potential (AP), and respiratory inorganics (RI) were selected, with a particular focus on the first two indices. Tension Control Of Solventless Lamination Machine, Sinstar Triplex solventless co-laminating machine, is a professional supplier whos engaged in the research, development, production, sales and. Among the solutions to heat-related bubbling is not to let the rolls sit idle for extended periods of time, to speed up the laminator so less heat gets into the printer or to work with a temperature about max 40C. Solventless adhesives come with a variety of benefits. Bubbles also can be caused if the adhesive doesnt bond properly to the image. 2021-08-19 The products in the packaging and printing industry are inseparable from the use of organic solvents, which brings many emissions of VOCs. Based on your criteria, we recommend the following: Steps to improve lay down are as follows: Pro/E software is used to found the static mixer model. 3) Do not ship lamination before cure completed in winter months if at all possible. Check the heat setting on the laminator. On top of a high level of in-house manufacturing and R&D excellence, MACtac has been working on developing a strong partnership with its customers and a solid sustainable development policy. Poor solubility of the ink and the adhesive, such as using polyamide ink. Solventless Lamination: The Modern Answer to Lamination, 1991 Polymers, Laminations & Coatings Conference Proceedings. come with a variety of benefits. On a variable speed machine loaded with thicker film it may be that the film is being run too fast and is not getting enough time on the heat shoes. Take note that in traditional practices, solventless adhesives did not go well in things that contain foil. Reduction in chemical resistance can effect ability to withstand internal package contents or external chemical exposure. Below are several common issues and suggested solutions. (Consul ink supplier to insure inks are lamination grade) Often seen forming in the heat seal edge and working inward but can occur anywhere in package. For instance, if there is insufficient tension on the image as it is going in, it could end up crooked or folded as it enters the nib of the rolls. Peeling Strength of Solventless Lamination Films for Retort - Springer Undesirable Phenomenon In Solventless Lamination | Sinstar Due to no solvent use, it saves solvent costs and saves a large amount of energy consumption without the dried process. [Solventless PU Lamination Technique] General View of - LinkedIn For instance, thinner film needs less tension. J Clean Prod 163:285292. Before moving on to solventless or solvent-based adhesives, here is some key information on lamination processes that will help you understand how these layers are laminated together by using the following lamination processes. 2. Limited Color Options: Solventless lamination is limited in terms of color options. 3) Insure adhesive is properly mixed by using correct mixing blade for container size, insure adequate vortex during mix and allow for proper mix time. When two webs are pulled though machine at mismatched elongations theywill return to normal state once tension is relieved. With the emphasis of lamination packaging companies on solvetless lamination Technology, this new type of laminating process has a significantly accelerated development trend. Atmos Environ 98:168178, Garciaceballos L, de AndresDaz JR, Contreraslopez MA (2018) Life cycle study of different constructive solutions for building enclosures. Simply adjust the temperature to a lower setting. High alcohol content from inks or alcohol contamination in solvents when using NCO containing adhesives. 3. The viscosity of mixture of A&B component has great effect on the appearance of the lamination products. These laminations may contain multiple laminate layers used to construct flexible packaging. Hi, let us know if you have any product questions as you visit our website. When too much heat is used, the moisture is dried out, but the areas that swell prevent the item from lying flat. When feeding an image into the laminator, make sure it is parallel to the roll. As is shown in Pic 3, the friction coefficients have great differences between the circumstances of 25 and 35 curing. They are specifically two-component adhesives consisting of an isocyanate and polyol that are mixed and react to form polyurethane. volume26,pages 561574 (2021)Cite this article. Atmos Environ 39:73747383, Winans Kiara S, Macadam-Somer Ilan, Kendall Alissa, Geyer Roland, Marvinney Elias (2019) Life cycle assessment of California unsweetened almond milk. Laminating problems and solutions 1.Bubbling issues - Academia.edu Select Accept to consent or Reject to decline non-essential cookies for this use. Copyright. Solventless Lamination The solvent is not used when it comes to producing adhesive substance. SYMBIEX Solventless Adhesives technology, SYMBIEX 100 / SYMBIEX CR 001 adhesives will simplify your lamination process, make it flexible as never before, and allow you to accelerate packaging innovation into the value chain. The new lamination technology is a result of a joint development effort, combining The two-part polyurethane laminating adhesives require a mixing and metering unit since pot life is limited. To insure proper cure : Platform scales are not accurate enough for small amounts of coreactant. The most important solventless and high solids adhesives used in laminating flexible packaging are those belonging to the polyurethane family. However, after significant improvement in this context, they have now made their way into applications that have foil in them including high-barrier films and high-slip films. 3. 4. LinkedIn and 3rd parties use essential and non-essential cookies to provide, secure, analyze and improve our Services, and (except on the iOS app) to show you relevant ads (including professional and job ads) on and off LinkedIn. In addition, due to the high permeability of the solventless adhesive, the color of the product is different when using the solvent-free laminating process for some flexible packaging products which require printing. The molecular weight of the solvent-free adhesive is generally Low and it is easily affected by external factors. Plastic film high speed solventless lamination machine is a product researched and developed by our company combined with the gradually matured solvent-free laminating technology. We would like to show you a description here but the site won't allow us. Answer: Repeating marks occur when there is something on the roll, usually a piece of paper or a scrap of film. PDF Lamination Suitability for Flexible Packaging Application 5. Voids may be in machine direction or randomly dispersed accross lamination. The voids may be consistent in shapeor highly irregular. Ink companies are adding more and more glycols to improve flow in inks to give better clarity on flexo presses. 2) Slow feed pump to prevent surging into pan. It should be cleaned every time the line stops. The Fluent software is used to simulate the mixer results under different diameters of pipe and different inlet velocities of A/B. E-footprint software and databases were used to assess environmental impacts based on the ISO 14040 standards. However, after significant improvement in this context, they have now made their way into applications that have foil in them including. At this time, it appears as a small and uniform spot in the entire composite film. At this point, the coating unit should be downtown, or the transfer roller is changed, and the blanket is eliminated. Theyre also ideal for packaging non-food items, like medical supplies, stationery, and cosmetics as well. ChemPoint has chemists and engineers with experience and market expertise to help you find the right solution. For older films or films that have not been pretreated a higher watt density will be needed. Edges of the print are no longer crisp and show outward movement into the non print area. Resour. According to Adhesives Age magazine, 25% of all consumer goods today are marketed in flexible packaging, in a continuing shift away from traditional folding cartons, boxes and fiberboard cases and trays. There is no doubt that flexible packaging has become the need of the time. High residual monomers and low initial bond strengths somewhat limit theapplication of these adhesives. Solventless laminating adhesives provide packaging converters with cost savings by eliminating the requirement of ovens to remove water or solvent carriers in water-based or solvent-based adhesives. Comparing with solvent adhesive, solventless adhesive has less coating amount, which needs strictly adapting. When a moist inkjet print encounters one of these hot spots, the ink easily can boil, creating bubbles. Film lamination represents a critical proportion of flexible packaging products. These problems were generally associated with variations in the ambient moisture content. Moreover, this procedure of combining films is known as lamination. 3 Reasons Why Going Solvent-Free Improves Sustainability We also hold ISO 8 (100,000) Cleanroom certification and SQF 9 certification. J Clean Prod 112:238248, Tang JH, Wang CXM, Chan LY, Sheng GY, Fu JM (2005) Volatile organic compounds in a multi-storey shopping mall in Guangzhou, South China. A dirty bar will not smooth adhesive uniformly and in some cases make the lamination look worse. Bonding problems also can be caused by inadequate heat, inadequate or uneven pressure or too much speed. For example, when trying to encapsulate something thick, the edges of the film hanging off the sides of the print will not get as much pressure, so theyll drag behind, causing the ripple pattern. Mix only long enough to incorporate both components do not overmix, Fish eyes are visible defects in the laminated webs that looksimilar to acrater. Save my name, email, and website in this browser for the next time I comment. GC/MS to identify unknown species, Steps to prevent incorrect mix ratio Wavy or rippled sections in the laminate, especially toward the center or the web. This process ensures a stronger and more durable bond, reducing the risk of delamination. (PDF) Lamination Suitability for Flexible Packaging - ResearchGate The adhesive can only reduce this movement slightly(thus causing laminate curl) this will result in tunneling in lamination. 4) Insure inks are properly dried prior to laminating by running GC head space for solvent retention. In the packaging printing industry, this method is becoming increasingly popular due to its environmental benefits and cost-effectiveness. Some flexible packaging producers like NJ-based LPS Industries have moved entirely to the use of a solventless lamination process. 4. As theres no waste generated, there is no need to configure expensive environmental equipment and corresponding operating expenses. If you are running thicker films you may have the problem if you try to go too fast. The hygienic performance of the composite film will not be reduced due to the existence of residual solvent. Learn more about Institutional subscriptions, Abn R, Laca A, Laca A, Daz M (2018) Environmental assesment of intensive egg production: a Spanish case study. Lot 8, Street Number 16, Viet Nam-Singapore II-A Industrial Park, Tan Uyen Town, Binh Duong Province, Viet Nam. Limited Availability: Solventless lamination is not available for all packaging applications. PROBLEM: Haze in lamination Haze in a lamination is a reduction in clarity of the film or adhesive most pronounced in window areas of the package or lamianted film. In 2012, Steve was one of the founding partners in LuxeFilms Group, which brings new and innovative thermal film technology to the packaging world, coordinating brand owners, packaging designers, and print manufacturers to bring new films and client-grabbing design elements to the retail shelf. On the other hand, the footprint is also minor in comparison to a solvent-based laminator. 1. Meanwhile, comparing with Solvent lamination, Solventless PU lamination technology possesses the advantages of less coating amount, lower energy consuming and faster laminating speed, as well as higher production efficiency, etc. Sometimes problems come up. The coated pressure roller of the composite roller has glue or other impurities. However, web can be clear and still have too much water retention. Contact us for additional technical support. More information about laminating adhesive, please finds us in: This button displays the currently selected search type. All Rights Reserved. The Dow Chemical Company (1995-2017). Low surface energy on the primary surface(film, ink, coating, etc.) If the defect is adhesive residues, simply clean the rolls. And, LPS industries widely opts for fourth-generation adhesives that are VOC-free when it comes to flexible packaging varieties. If done properly, the tinsel will reduce static electricity on both sides of the static-laden material. Ink bleeding is a reduction in print quality or crispness of the print job. Laminating can be a delicate process with several potential process flaws that can affect the final look of a laminated print. Solventless adhesive generally indicates a specific type of adhesive composed of two components reacting with each other and consequently not requiring drying. Inkjet printers dump a lot of ink onto the print and a rushed operator may try to laminate the image before the ink is completely dry. While this is by no means a complete list of the available technologies and products, it does provide the converter a starting point for product development. He, H., Fu, Y., Zhao, Y. et al. For one, the curing temperature affects the reaction of solventless adhesives. Static electricity is an issue when laminating lighter weight films since they have a tendency to curl back towards the rear rolls. Components of ink systems including glycols can be re-softened by some 100% solids adhesives, resulting in bleeding. (Air mixer). At 25 , the viscosity of component B is 600 mPa.S, while at 10, it rises to 2000 mPa.S, and drops to 220 mPa.S at 40 . For instance, if the user applies the same tension to both the top and bottom film, the bottom film will likely stretch more than the top since it is weaker. No combustible, explosive organic solvents in solventless laminating technology, there will be good safety. Therefore, adhesives manufacturers have tried to address this issue by generating several, Theyre also ideal for packaging non-food items, like, Stand-up Barrier Pouches: Uses & Customization Options, Why Custom Pouches are the Most Versatile Packaging Option, Custom Printed Rollstock Film Laminate Using Solventless Technology, Custom Military Specification Packaging & Roll Stock, Stock Laminated Rollstock Using Solventless Technology, Clear, Multi Purpose Gusseted Polyethylene Bag Packaging, Loc-Top Custom Reclosable Zipper Polyethylene Bags, Loc-Top Metallic Static Shielding Resealable Bags, Transparent Metallic Static Shielding Bags, TIGR-WRAP Weatherproofing Construction Flashing, Loc n Pres Pressure Sensitive Zippered Envelopes, Military Specification Fluorescent Packing List Envelopes, UN4G & 4GV Combination Packaging Boxes Cartons Shippers, High Density Polyethylene Bottle Packaging, Bottle and Cylindrical Product Label Applicator, Adjustable Stretch Wrap Dispenser and Stretch Film, Kimpack Absorbent Cellulose Cushioning & Wadding, Super-Sealer Portable Shrink Wrap Packaging System, Top Quality Stretch Wrap in Disposable Dispenser, Corrugated Shipping Cartons, Boxes and Accessories, Easily Assembled Cardboard Folding Cartons for Product Protection, Industrial Heavy-Duty Corrugated Cardboard Shipping Cartons, Safe & Convenient Shipping Carton Opener Knife with Blades, Impact, Tilt, Damage & Temperature Indicators, Precautionary Shipping and Handling Labels. A hot room can be used to accelerate cure often set at 115F The temperature of the laminating roller should be useful to the second leveling of adhesives, and not result in deformation of plastic films. Bubbles are caused by a lot of problems: insufficient tension on the supply roll; feeding the leading edge of the print too quickly into the laminator; too much heat on a wet print, causing "outgassing" of the ink; the adhesive not bonding properly to the media, and others. 1. This process eliminates the risk of fire or explosion and ensures a safer work environment. Wrinkling of the plastic on a laminated piece of material. Use of fresh pretreated films is desirable. The converter is confronted with increasingly demanding . As the image cools, the bottom film will tighten up a little more than the top film since it was stretched farther, causing the image to curl towards the back. Lack of supply roll tension can cause the film to not be taut as it enters the nib. The A component of the two-component solventless adhesive is easy to react with the water, affecting the adhesive ratio, thereby affecting the laminating quality of the product. On the other side, some slipping agent with low melting point become adhesion, making itself invalid. Slow down the motor and/or use a lower appropriate temperature for that particular film. Boat wake is an undesirable ripple pattern in a V shape on a finished print. For example, when the laminating substrate is thin and the flexible package products with the auxiliaries which contain a large amount of molecular weight, adopting solvent-free lamination process, the adhesive will penetrate the substrate and In severe cases, it can accumulate on the thermal surface of the substrate, by secondary reactions, generating urea and other derivatives, which affects the heat-seal quality of the product. Moreover, the edge of the printing pattern for the lamination product will become larger and the stroke of the small text will be thicker. Too little supply roll tension will cause bubbles before it will cause wrinkles in the film. Google Scholar, Carter WPL (1994) Development of ozone reactivity scales for volatile organic. 1) Ideally overflow pipe should be located under adhesive level to prevent "free fall" creating bubbles Why choose laminated film packaging for non-food products.
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