Technical requirements for glazing

Ideal Varnish with colorless, odorless, strong glossy, fast drying, resistant to chemicals and other features, but also must have the following properties.

    1, layer transparency, not color

    To get good decorating printed glazing effect, depending on the surface layer of colorless, transparent sheets of film, and the graphic does not change color after drying. And can not be used for a long time due to sun or change color, yellow.

    2, the film has some wear

    Some glazing of the print requirements of glazing has some wear and scratch resistance. Because high-speed box making machine, cardboard PACKER installed equipment, books on the dust jacket and other assembly line production process, the printed surface by friction, so must have a wear resistance.

    3, has a certain elasticity of soft

    Any kind of varnish on the printed surface of the light in the film must be flexible to maintain good order and the phase-paper or cardboard flexibility to adapt, thus preventing breakage or cracking, shedding.

    4, the film is better resistance to environmental performance

    After some polishing for the production of various types of printed packaging cartons, packaging products to be able to play a good protective effect, requiring some polishing film better environmental resistance. For example: food, cigarettes, cosmetics, clothing and other goods packaging must have moisture, mold and mildew performance. In addition, dry chemical properties of the film to stabilize. The same can not be due to the weak acid or weak base in the environment such as chemical exposure and changes in performance.

    5, the printed surface has a certain adhesion

    Graphic printed ink surface integral due to the impact of density, viscosity suitable surface greatly reduced, to prevent dry chapped in the use of film, stripping, coating adhesion strength required, and use of various types of ink and ink transfer there is a certain adhesion materials.

    6, good leveling, smooth membrane surface

    A wide range of print substrates, combined with the impact of printing graphics, surface absorption, smoothness, wetting, etc. vary widely, for the glazing coating the surface of the different products are able to form a smooth coating, flow coating requirements Flat is good, smooth surface film after film.

    7, finishing adaptive width

    Printed glazing, the general need to go through the process after processing, such as: the molding process, hot stamping foil processing. So. Requires adaptability to finishing polishing film width. For example: better heat resistance, foil stamping, you can not produce the phenomenon of sticky ride; solvent resistance high and dry after the film, after processing in the adhesive can not be due to the effects of blistering, wrinkling, and sticky phenomenon.