Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
  • B41M7/02—Dusting, e.g. with an anti-offset powder for obtaining raised printing such as by thermogravure ; Varnishing

Definitions

• the present invention relates to a new process for modifying the surface condition of the most diverse materials. It relates more particularly to a new relief offset printing process.
• the rotary offset printing allows printing without pressure on virtually all surfaces. Offset inks must meet a very large number of physicochemical constraints and have defined flow, coloring and drying on the support, they must without accident play their role of hydrophobic substances in dynamic equilibrium with water and the plate.
• the offset process has taken place among the major printing processes.
• this process has an important drawback: the surfaces thus treated and pressed have after drying an absolutely uniform relief. If one wishes to obtain a less uniform, more heterogeneous, more artistically decorated surface, it is necessary, in accordance with currently known techniques, to resort to complicated and costly processes such as, for example, the mechanical deformations of the support. It is also necessary that the different supports and surfaces can withstand these different mechanical stresses. Other techniques such as flocking, the use of inks containing swelling agents or a succession of a plurality of prints on the silk screen give disappointing results or are economically very expensive or cannot be applied only on perfectly flat surfaces.
• the object of the present invention is therefore to provide a relief offset printing method which better meets the needs of the practice than the methods aiming at the same object previously known, in particular in that it allows to obtain reliefs of a variety as large as desired, in that it can be applied to all surfaces and on all materials and in that it is simple, easy and economical to execute.
• the subject of the present invention is a method for modifying the surface condition of various materials and in particular a relief offset printing method, characterized in that a plurality of inks or varnishes are used simultaneously typo-offset, serigraphy or offset having different temperatures and polymerization rates, in that a pre-drying is carried out at an appro- priate temperature.
• inks and varnishes are chosen according to the nature of the material whose surface must be modified. The different loads can be applied in one or more operations. The modification of the surface condition is easily carried out and the decorative effects obtained - in particular for packaging - are truly extraordinary.
• the fillers which can be used for application on inks not yet polymerized can be of different chemical nature and of different colors.
• the filler particles are taken from the group which comprises mica, expanded mica, pearlescent base, expandable plastic foam, colloidal silica, metal powders, cork powder, agents bulking agents, flocking particles or flocs, leather powder, plastic powder, asbestos powder, rubber powder, glass microbeads, luminescent or phosphorescent products, etc.
• These different filler particles can be applied and distributed both by spraying and by an inkwell.
• the whole of the treated surface is subjected to a varnishing which has the aim of reinforcing the solidity of the decoration thus obtained.
• WIPO V.'OO a range of colors and reliefs. It allows in particular to obtain surfaces having irregular thicknesses with rounded edges with remarkable decorative effect.
• the invention also comprises other arrangements which will emerge from the description which follows, which refers to an example of implementation of the method according to the present invention. It should be understood, however, that this example is given only by way of illustration of the subject of the invention, of which it in no way constitutes a limitation.
• the cases can undergo a finishing varnish.

Landscapes

• Printing Methods (AREA)
• Automatic Focus Adjustment (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Optical Recording Or Reproduction (AREA)

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9287221

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (7)

Citations (2)

Family Cites Families (10)

• 1983
  • 1983-03-25 FR FR8304908A patent/FR2543060B1/fr not_active Expired
• 1984
  • 1984-03-21 EP EP84901356A patent/EP0137838B1/fr not_active Expired
  • 1984-03-21 AU AU26990/84A patent/AU571866B2/en not_active Ceased
  • 1984-03-21 DE DE8484901356T patent/DE3465040D1/de not_active Expired
  • 1984-03-21 US US06/683,269 patent/US4684548A/en not_active Expired - Fee Related
  • 1984-03-21 JP JP59501337A patent/JPS60500904A/ja active Granted
  • 1984-03-21 WO PCT/FR1984/000072 patent/WO1984003664A1/fr not_active Ceased

Patent Citations (2)

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