FR2790996A1 - Overprinting procedure for packaging uses engraved plates to obliterate existing marks and then overprint with new designs or words - Google Patents

Abstract

The procedure, for use on packaging that is already printed, consists of preparing a magnetic screen or engraved steel plate and using it with specific inks to obliterate at least part of the existing print. After drying, the obliterated area can then be overprinted with a new text or design. The package is then dried again prior to storage or filling. The procedure is carried out with the aid of a machine using an automatic feed system with a carriage (1), a manipulator arm (3), pad printers (4), a discharge and control panel (5) and a table (6).

Description

es 2790996

  PROCESS FOR OVERPRINTING ALREADY PRINTED PACKAGING

  The present invention relates to a process more particularly intended for the overprinting of existing packaging, already printed, and which is presented exclusively in the form of cut materials. The invention consists in occulting, with specific inks and different colors, a text or pattern, printed with a stamp. These supports of different materials can be folded, pre-glued, flat, cylindrical, thermoformed, stamped or in any other form excluding flexible supports in coils. This overprinting process allows you to position a correction or an addition of print at a marked location, using the

  stamp printing technique.

  This application comes to the aid of packaging users and allows recovery

  and the rehabilitation of materials already printed and unusable.

  Currently, the implementation of this process is conditioned by manual operations and by an automated line being an invention listed invention patent n 16 under publication number 2739805. This update relates to the automated line because

  the old case feeder has been improved.

  The new device allows faster and easier feeding. The invention comprises, according to a first characteristic: - a method of overprinting This method consists, firstly, of preparing a first magnetic plate with frames or steel with a fixing plate. This photograph engraved using a spray engraving apparatus represents a block which will obscure, by a stamp printing with

  specific inks, an existing part identified and already printed on a support.

  The support is then dried, then using a second engraving, the new texts or patterns are overprinted with a pad printing on the surface beforehand.

  obscured by the pavé of the first engraving.

  Finally, the supports are again dried before packaging.

  - an automation comprising: - a feeding trolley allowing the automatic feeding of the cases - an automaton, consisting of a table supporting the different printheads

  - a case evacuation and control plan.

  Patent No. 16, under publication number 2739805, is amended because the system

automated has been improved.

  In addition, the system is now designed to operate with one to four printheads.

  In addition, the feeding system which, formerly made, included a distributor and a conveyor was replaced by a feeding cart. Two illustrations, a detailed presentation and a new operating principle will help to understand the improvements made.

  The accompanying drawings illustrate the invention.

  - Figure 1: top view of the assembly - Figure 2: side view of the pad printing heads

  - Figure 3: side view of the feed carriage.

  Detailed description With reference to these drawings, the invention comprises: - the feed carriage (1) - the manipulator arm (3) - the print heads (4) - the evacuation and control plan (5) - the plate (6) The feed carriage (1) comprises two axial adjustment rails (12), two longitudinal adjustment plates (17), four guides (18), a stepping motor (13) drive a screw endless (14) for raising or lowering the support plate (11) thanks to the bracket (15), and a

photoelectric cell (16).

  The manipulator arm (3) includes a central axis (34), 6 arms (33), 12 cylinders (32) and 12

suction cups (31).

  The print heads (4) are fixed on crossed tables (41), having an adjustment lever

axial (43) and longitudinal (42).

  The tray includes a support plate (61) and the frame of the assembly (62).

  Principle of operation The cases (2) are stacked vertically in the feed carriage (1) on the support plate (11), the stepping motor (13) raises the cases until the cell (16) detects them. The jacks (32) allow the suction cups (31) to descend. Once the case has been vacuumed, the suction cups (31) go up. The cell (16) no longer detecting cases gives the order to the motor (13) to raise the stack of cases to the level of the latter. The manipulator arm (3) rotates to present the case in front of the first print head (4). The cylinders (32) press the cases on the support plate (61) for the first impression. The suction cups (31) rise so that the manipulator arm (3) performs a new rotation for the second printhead and thus

  37 continued until the cases fall on the evacuation and control plan (5).

Claims (2)

  1- A method of overprinting, in particular of already printed packaging, characterized in that it consists, in a first step, in preparing a first magnetic plate with frames or in steel, with a fixing plate, this plate engraved using '' a spraying device, representing a paving stone which will obscure, by a pad printing with specific inks, an existing identified and already printed part of a support, then dry the support, then using a second engraving , to overprint new texts or patterns with a stamp printing, on the surface previously obscured by the paving stone of the first engraving,   and finally again to dry the supports before storage and packaging.   2- Automatic device for implementing the overprinting process according to claim 1 characterized in that it comprises an automatic feeding system comprising a feeding carriage (1), a manipulator arm (3), machines for   12 pad printing (4), the evacuation and control plan (5) and the plate (6).