Self-adhesive is an important raw material for printed matter such as product packaging, logos, and commercial advertisements. Four-color Heidelberg offset printing presses are used to print copperplate (flat paper) materials. Most of them are color prints with large printing areas and large amounts of ink. Since the special light copperplate adhesive is composed of two layers of paper with completely different material properties, when the deformation coefficients of the top and bottom paper materials are inconsistent, it is easy to cause unevenness on the paper surface or paper edge, which will directly affect the printing Production efficiency and product printing quality.
Our company has a Heidelberg Folio offset press recently when printing four-color textured products on folio special-coated self-adhesive materials, such a printing quality failure phenomenon has occurred: a light blue flat screen plate near the longitudinal paper edge There are several irregular diagonal streaks with a length of 50mm to 100mm and a width of about 3mm, and the color of the streak marks is obviously darker than the surrounding light blue flat screen. After this abnormal printing quality problem occurred, we did not find any abnormality in the printing and conveying process of the printing plate, rubber, rubber roller and printed sheet through inspection. Then, during further observation and analysis, we found that there were irregularities on the paper surface of the longitudinal edges of the copperplate stickers. In this way, after the second group of blue printing was completed, the raised paper blue dots When the imprints of the third and fourth color groups are imprinted, the imprints on the rubber and then printed on the uneven paper dots have a slight position deviation, thus forming irregular diagonal streak imprints. . After analyzing and judging the cause of the failure, we will transfer the light blue flat screen color plate to the fourth color group for printing. The irregular oblique streak marks on the printed plate are eliminated immediately, and the printing quality of the product Better improvement.
The elimination of this fault makes us deeply understand how important it is to arrange the printing color sequence scientifically and reasonably according to the characteristics of the printed materials. In particular, the arrangement of light-colored flat screen layout after printing is more conducive to effectively reducing the occurrence of printing quality failures and ensuring the printing quality of products.
A floating shelf is a form of shelf with its wall fixings hidden within the shelf board, with no visible supporting brackets. It can be supported on hidden rods or bars that have been attached to studs. A thick floating shelf may be made of a hollow-core shelf glued to a cleat.
A floating shelf may have two or more channels open from the back towards, but without reaching, the front, into which slide fasteners attached to the wall, typically held in place by screws inserted through the bottom of the shelf.
For typical floating shelf supports, a supplier suggests that floating brackets with a diameter of 12mm can support a shelf at least 22mm thick loaded with 20kg, and 18mm brackets can support 30kg on a 28mm shelf.
This description is in reference to one particular type of floating shelf support, others options are available. Also not to be confused with corner shelves, which would require entirely different supports to make them "float".
Floating shelves are a good fit for a contemporary minimalist style interior.They can be used to expand storage space, atop a radiator to double as storage, or inside a hallway to double as a console table.
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