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    Home > Coatings News > Paints and Coatings Market > Trends in the use of UV curing coatings in formulation, production, coating processes and equipment

    Trends in the use of UV curing coatings in formulation, production, coating processes and equipment

    • Last Update: 2020-12-13
    • Source: Internet
    • Author: User
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    Within two years of the outbreak of the world economic crisis in the United States (October 29, 1929), polymethyl acrylates (PMMA) were born in the laboratories of two companies on two different continents, named Plexiglas
    TM
    and Lucite
    TM
    respectively.
    in 1933, polyethylene was first discovered by two chemists at ICI england. After 5 years of research and development, the commercialization of products has become
    the
    .
    In the middle of the Great Depression, around 1935, BASF pioneered polystyrene, and RCA Victor, an American radio company, released a vinyl diastopheric record that had twice the groove density and superior sound quality compared to worm-glue records. From 27 recorders to record playback devices, consumers have access to a wider range of recordings, accelerating the spread of music around the world and driving the development of the entire music industry.
    1935, DuPont invented nylon and patented it, and women's nylon socks are still popular today.
    1938, Roy Plunkett, also a DuPont chemist, discovered Teflon - now commonly found in almost all home kitchen utensils and commercial baking trays.
    1941, polyethylene glycol benzoate (PET) plastics were found in the UK.
    1948, acrylonitrile-butane-styrene tri-polymer (ABS) was introduced and used to manufacture numerous molded components and related equipment.
    1950, DuPont commercialized polyester.
    the 1950s, driven by the identification and coding needs of cans, components, labels and packaging, the industry began to study photochemical polymer UVs and electron beam chemistry. The initial methods and equipment were flexible printing, engraving, flat-screen printing and screen printing. Inkjet printing wasn't used in computers until the 1970s, and pioneering technology dot matrix printers allowed inkjet printing with solvent-based or ultraviolet-cured inks to enter our field of view for the first time.
    1951, Philips chemist J. Paul Hogan and Robert L. Banks successfully aggregated propylene to create polypropylene (PP).
    1953, General Electric chemist Daniel Fox and Bayer's Hermann Schnell invented the new polycarbonate thermoplastic, Lexan
    TM
    and Makrolon
    ®
    - both of which are chemically plated and coated, and almost all radio devices - mobile phones, smartphones, laptops and tablets - are made of polycarbonate or polycarbonate-based alloys.
    1954 brought with it the invention of puffed or foamed polystyrene - Styrofoam
    TM
    used in countless packaging materials, cups and as building isolation materials.
    in the early 1960s, high-density polyethylene bottles began to appear, essentially replacing glass for soft drink packaging.
    1965, chemist Stepahanie Kwolek developed a lightweight, highly resistant, high-enduring plastic aromatic polyamide, or aramid, that weaves into fibers - commercially known as Kevlar
    ®
    .
    in the 1980s, polyester film raw materials replaced cellulose acetate for photographic film, computer storage, roll-to-roll audio and video tapes.
    1983, ICI and Bayer introduced polyether ketones (PEEK), polyphenyl thioether (PPS) and polyether pyride (PES), all of which were chemically plated and applied by the authors.
    1987, BASF introduced polyacetylene, which is twice as conductive as copper.
    1988, Australia introduced the first generation of polymer fiscal bank notes.
    1990, ICI introduced polyhydroxybutyrate, the first generation of biodegradable, commercially produced plastics (see Figure 1).
    polymer material
    polymer material can be assembled using one or more methods listed in Table 1.
    Plastic extrusion is a heavily used method and device, one or most of the plastic material is melted, through extrusion, along a variety of heated mold profile, the use of extrusion friction generated heat, forming a continuous profile. Once fully cooled to the glass transition temperature (Tg) of the plastic, a continuous two- or three-dimensional pattern is obtained, creating an almost entirely new application of plastic products (see Figure 2)
    In the early 20th century, the first generation of extrusion devices were used for rubber - recycling waste rubber and mixing additives evenly into rubber. The first generation of thermoplastic extrusion devices for rubber was made by Paul Troester in Hamburg, Germany, followed by roberto Colombo of LMP, which developed the first generation of twin screw extrusions in Italy.
    general applications for plastic extrusing include, but are not limited to, deck armrests, walls, film and sheets, pipes, oil pipes, wind and rain bars, and wire insulation.
    Plastics a variety of co-extrusion and extrusion methods and extrusion devices are listed as follows:
    . Blowing film - very thin polymer film for packaging or continuous mesh finished products;
    . . coating - applying secondaryly heated resin to mobile mesh finished products through pressure rollers;
    Co-extrusion - most extruders use single screw feed to create multi-layer finished products;
    composite extrusion - in which most polymers and additives get a homogenized finished product;
    thermal pressure coating - a thin polymer coating is added to the film, foil, and paper mesh finished product;
    film extrusion - the polymer continues to squeeze out to both sides, resulting in a finished product less than 0.030 inches (0.76 mm) thicker than the blow molding film.
    Extrusion stacks - where hot-melt extruded polymer resins bond two layers of mesh sheets together as a medium - without adhesive - to obtain the available finished product;
    sheet extrusions - in which the polymer is continuously squeezed to both sides, thickness greater than or equal to 0.030 inches (0.76 mm), the finished product can be cut off.
    catheter extrusion - this method and device allow for a continuous inlet in the direction of the finished product being pulled out.
    most commonly available polymer film or sheet substrate material are listed in Table 2. According to the field of view of this paper, casting, co-extrusion and extrusion of polymer film or sheet material can be in accordance with the end-user specific use expectations, developed a large number of options for production, such as:
    , clear type
    , laminal parts
    , opaque type
    . Colored or dyed type
    . Transluceration
    . full transparency
    like a size that does not meet all requirements, casting, co-extrusion and extrusion of colored polymer films or color sheets The method of marking and marking may include:
    , applying the shape of the coating
    , embossing
    , laminating
    , physical meteorological deposition - PVD
    , plastic plating - POP
    , resin base
    In addition, casting, co-extrusion and substrate polymer film/sheet methods and devices can be used to assemble a variety of different final geometry, there may be the following components:
    - flat parts - two-dimensional
    - bendable parts - simple three-dimensional
    . Formable parts - complex 3D and with deep stamping
    , plastic parts - 3D complexes
    and, for consumer or industrial applications, applied to color or markers - selectively printed or fully printed Materials, methods and devices for casting, co-extrusion or extrusion of polymer films or sheets may include the following:
    . Adhesives
    . Paints
    . . Inks
    . . . hood varnishes
    Formula materials, methods and devices for UV (ultraviolet light), EB (electron beam) and IR infrared applications may be:
    . water-based coatings
    . water-based/alcohol-based coatings( drying
    ) solvents Type Coatings - Drying
    - 100% Solid Coatings - UV (Ultraviolet Light) Curing
    Available Mixed Drying/Curing Systems
    Just as consumers seek maximum value from their retail buying behavior, Point-of-sale retailers (especially in each major country's big stores) use their huge purchasing power, national or worldwide distribution, and logistics to lower prices to generate new sales and increase consumer loyalty to their brands, while maintaining their financial target EBITDA, in other words, profit.
    reliable raw materials, assembly, or manufacturing processes may not meet established goals at the cost, yield, time-to-market, and consumer psychological expectations.
    every assembly, production and operation process is designed for precise coordination between materials, process methods and installations, which serve the desired or established outcome - the lowest cost and highest reliability of the finished product.
    , for example, solvent-based coatings or ink materials are priced lower than water-based materials, only because solvent-based materials are less solid. The solid content of alcohol-based formulations is generally between solvent-based and water-based formulations.
    So we need to document the detailed methods applied - typically including the loss due to the form factor of the components, and the conversion efficiency of the specific application method chosen for the specific substance transport medium - water-based, water-based/alcohol-based, solvent-based or 100% solids. The lowest raw material price does not represent the lowest method and the final cost of the unit.
    it is even more important to note that the energy transfer, loss, time and space requirements required to transition from wet to dry film states are very complex challenges - and, perhaps, these may not be obvious. Each wet film, especially the wet film on the horizontal surface or any wet film that requires heating and air circulation, is not a necessity for accelerated ovens or intermittent heating ovens, and the process of turning the wet film into a completely dry paint film state also creates an operating environment full of debris, resulting in subsequent processing losses, sometimes as high as 50% - generally speaking, all of these losses are economically irreparable and therefore increase COG (commodity costs).
    The introduction of new materials, methods and devices has a significant minimum limit that also has an impact on productivity and production, often leading to new or new assembly, manufacturing or process results, replacing previously reliable raw materials, assemblies, or manufacturing processes. This is confirmed by the range of decorations and/or markings applied to polymer films/sheets, and is applicable to the high-volume and/or high-value consumer and industrial products presented in this paper.
    methods and devices for energy curing of UV (ultraviolet light) and EB (electron beam
    coatings and adhesives




    . In
    the coating and adhesion methods and devices mentioned above
    , ideally for polymer films or sheets, it is desirable to assume full printing or full coverage, and it is feasible to introduce selected uses through preferred methods and devices, which may require the use of removable plastic paper and shielding equipment.
    is generally used to apply shapes to three-dimensional surfaces with low surface height , such as embossed or new surface components.
    immersion can be applied when a polymer film or sheet may be a vertical method or device, such as large cast sheets or large mesh films such as color filters for life broadcasting, film, theater and music stage products.
    applied to applications of the highest purity or where light transmission is required - such products are coated with high-gloss coatings on polymer films or sheets - for use in high-end optical or medical environments.
    roll coating is applied in applications requiring high coating accuracy, high tolerance and low thickness, and is coated by pressure between the coating roller and the printed material.
    The introduction of UV light or electron beam energy-cured materials in the above five methods and devices can bring combined characteristics or advantages such as:


    x 100% material transfer utilization;
    . Eliminates dimensional differences in the final product,
    eliminates curling or warping due to solvents or solvents,
    eliminates debris problems and losses in the wet film-to-dry film process, and
    maximizes the processing capacity of the film or sheet;
    . Minimize space requirements for process production lines,
    . near-zero air VOC emissions,
    . Eliminate nearly 100% of hazardous waste disposal costs and responsibility from cradle to grave, and
    reduce the overall carbon footprint.
    exception to the spray.
    Adhesives and inks
    , laser printing
    flexible plate printing
    engraving printing
    , lithography
    , offset printing
    shift printing
    screen printing
    above for polymer films or sheets Well-known adhesive and ink construction methods and devices, assuming that the film or sheet needs to be fully printed or 100% cover adhesive, coated with a white cover, coated with the first, second, some popular color or choice of markings, or the film or sheet surface combined to the desired collar
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