Options
Title
VERFAHREN ZUR MARKIERUNG VON PAPIEREN UND KARTONS
Date Issued
2002
Author(s)
Uerlings, V.
Patent No
1998-19822605
Abstract
DE 19822605 A UPAB: 20000112 NOVELTY - To form a durable marking in the top layer of paper substrates, at least one of the lower layers is treated with laser energy before the top layer is applied. The top layer is opaque using a printing and/or at least a varnish and/or at least a metallizing or combinations of them. DETAILED DESCRIPTION - A coating is directly under the top paper layer, which has no pigments or contains white or colored pigments. The coating is calendered and can also be varnished. The same process can be used with layers of thicker fiber webs, of natural fibers, to give a cardboard product. The laser energy metallizes the surface to take printing and/or a varnish. The lower layer surface is treated with a carbon dioxide laser. The metallizing process uses copper, aluminum, gold or silver. The marking is a logo, name, trade mark, an image, or a security marking. The paper substrate is in a weight of 40-400 g/m2. USE - The process is for the development of a durable marking in the paper or cardboard material, such as would be provided by a watermark or for the security of the document. ADVANTAGE - The material gives an effective reflection of the marking through the top layer. When the top layer has been applied to the paper substrates, no further processing is required.
Language
de
Institute
Patenprio
DE 1998-19822605 A: 19980520