AU2006296808A1 - Printed thermoformable laminate with increased protection against forgery - Google Patents

Description

VERIFICATION OF TRANSLATION International Patent Application PCT/EP2006/08739 I, ASTRID TERRY, Translator of 11 Bounds Oaks Way, Tunbridge Wells, Kent, TN4 OUB, confirm that I am familiar with the English and German languages, and that the attached translation has been prepared by me to the best of my knowledge and ability. Signed this 2 4 * day of January 2008 1 PCT/EP2006/008739 Printed thermoformable laminate with increased security against forgery The invention relates to a printed thermoformable laminate made of at least two 5 plastics material films. Thermoformable plastics material laminates may be printed for customer information before or after forming. The printing of the laminates before the thermoforming into containers or beakers takes place primarily on the container 10 wall with current printing methods. If the plastics material laminate is printed before the thermoforming the printing may detach to a greater or lesser extent from the laminate surface during forming or during the logistics because of the reduced adhesion of the printing dyes to the background, as a function of the degree of forming. 15 In the two cases of conventional printing, the print is located on the outside of the laminate surface forming the packaging and is therefore easily accessible for forgeries, in that the print can be removed from the packaging and can easily be replaced by printing on new information. 20 When using pre-printed laminates, there is also the possibility that these may be produced by forgers, as plastics material films and laminates made of plastics materials are available to an almost unlimited extent commercially. 25 The invention is based on the object of providing a thermoformable laminate of the type mentioned at the outset with a printing such that, in comparison to the printed thermoformable laminates according to the prior art, a substantially higher degree of security against forgery is produced. 30 The fact that the printing is arranged between adjacent plastics material films to increase the security against forgery leads to the achievement of the object according to the invention.

2 The following structures are preferred for the laminates according to the invention: - film A / print / laminating means / film C - film A / print / laminating means / film B / laminating means / film C 5 - film A / print / laminating means / film B / laminating means / print / film C. The films A, B and C are thermoformable plastics material films based on chlorinated hydrocarbons, such as polyvinyl chloride and polyvinylidene chloride, chlorofluorocarbons, for example ACLAR©, polyolefins, 10 polyethyleneterephthalates, polyacrylonitriles, for example BAREX*, cycloolefin copolymers, cycloolefin polymers, polysulphones or biologically degradable plastics materials, or combinations of these plastics materials in the laminate. PVDC may be a film or a coating. 15 The total thickness of the laminates is 150 to 500 pm and also 90 to 150 pm in PVC/PE laminates. The lamination takes place with laminating adhesives based on water, with solvent-based or solvent-free laminating adhesives and/or by extrusion lamination 20 as monoextrusion or coextrusion. In the case of COC or COP laminates with PE or PP, a lacquer lamination or else the production of a partial laminate by coextrusion is recommended. The interlaminar bond of the individual layers should be at least 2 N/15 mm. 25 When using dyed films for the printing, the colour of the printed image may be changed by a corresponding choice of colour. For example, blue printing of a film which is dyed yellow leads to a printed image which appears green. The security against forgery of printed laminates can be further increased with colour 30 combinations of this type.

3 The preferred film combinations for the laminates according to the invention are compiled in Table 1. The abbreviations of the plastics materials on which the films are based mean: 5 PVC polyvinyl chloride PVDC polyvinylidene chloride PAN polyacrylonitrile PE polyethylene of various densities, including the metallocenes PP polypropylenes, including the metallocenes 10 COC cycloolefin copolymer COP cycloolefin polymer PSU polysulphone PCTFE polychlorotrifluoroethylene EVOH ethylene vinyl alcohol 15 PGA polyglycolic acid Containers thermoformed from the laminate, in particular blister base parts, or beakers, preferably for packaging pharmaceutical and medical products are a preferred application area of the thermoformable laminate according to the 20 invention.

4 Table 1: Preferred laminate structures Laminate number Film A Film B Film C 1 PVC PVC 2 PVC PCTFE 3 PVC PAN 4 PVC PE 5 PVC PVDC 6 PVC COC or COP 7 PVC PVC PVC 8 PVC PCTFE PVC 9 PVC PAN PVC 10 PVC EVOHorPGA PVC 11 PVC PE PVC 12 PVC PE PVDC 13 PVC COCorCOP PVC 14 PVC COCorCOP PP 15 PVC COCorCOP PVDC 16 PVC COC or COP PCTFE 17 PVC COCorCOP PAN 18 PVC PVC PE 19 PP PP 20 PP PCTFE 21 PP PVDC 22 PP COC or COP 23 PP PCTFE PP 24 PP EVOHorPGA PP 25 PP COC or COP PP 26 PP PAN PP 27 PP COCorCOP PVDC 28 PP COC or COP PCTFE 29 PET PET 30 PET PCTFE 31 PET PVDC 32 PSU PVC 33 PSU PET 34 PSU PP 35 PSU COC or COP PP 36 PSU PVC PCTFE 37 PSU PVC PVDC 38 PSU PET PCTFE

Claims (5)

1. Thermoformable laminate made of at least two plastics material films with printing, characterised in that the printing is arranged inside the laminate 5 between the plastics material films to increase the security against forgery.

2. Thermoformable laminate according to claim 1, characterised in that the laminate is constructed as follows: - film A / print / laminating means / film C 10 - film A / print / laminating means / film B / laminating means / film C - film A / print / laminating means / film B / laminating means / print / film C.

3. Thermoformable laminate according to claim 2, characterised in that the 15 films A, B and/or C are thermoformable plastics material films or combinations of these plastics material films based on chlorinated hydrocarbons, chlorofluorocarbons, polyolefins, polyethyleneterephthalates, polyacrylonitriles, cycloolefin copolymers, cycloolefin polymers, polysulphones or biologically degradable plastics 20 materials.

4. Thermoformed container, in particular blister base part, or beaker made of a thermoformable laminate according to any one of the preceding claims. 25

5. Use of thermoformed containers and beakers according to claim 4 for the packaging of pharmaceutical and medical products.