SYSTEM AND METHOD FOR PRODUCING MEDICAL PACKAGING

Abstract

The invention relates to a system and a method for manufacturing a medical package, in particular a foil bag made of plastic. A print image with variable information is first applied by means of a thermal transfer printer which is formed as a negative print image and comprises blank spaces. The blank spaces are filled by means of a hot stamp printing process.

Claims

1. A system for manufacturing a medical package made of plastic, which comprises printing a foil, having a first printer, which comprises a digitally controlled thermal print head with a number of heating elements, which can be actuated via a control device and by means of which a variable print image can be generated on a surface of the medical package and a second printer arranged downstream which is formed as a hot stamp printer, which comprises a printing plate which comprises a print relief with a flat section, wherein the flat section is dimensioned and arranged in such manner that it overlaps at least in sections with the print image generated by the first printer.

2. The system according to claim 1, wherein the first printer and the second printer are arranged one behind the other such that a foil tape can be transported along the printers.

3. The system according to claim 1, wherein in the second printer the flat section of the print relief is dimensioned and arranged in such manner that it lies inside the print image generated with the first printer.

4. The system according to claim 1, wherein the print relief of the printing plate comprises at least one further section, wherein the further section contains a structure with static information and is dimensioned and arranged in such manner that it lies outside of the print image generated with the first printer, in particular wherein the further section of the print relief has at least one structure selected from a group consisting of letters, digits, symbol, image, barcode and data matrix code.

5. The system according to claim 1, further comprising a filling station for filling the medical package with a medical liquid and a device for sealing the filled medical package and, in particular, an autoclaving station.

6. A use of a system according to claim 1 for manufacturing a medical package made of plastic, in particular a foil bag.

7. A method for manufacturing a medical package made of plastic, which comprises printing a foil, in particular for a foil bag, preferably carried out with a system according to one of the preceding claims, wherein a negative print image is first applied on a surface of the foil, in particular of the medical package, with a first printer in the digital printing process, wherein at least one section of a print image is defined by blank spaces in the negative print image and wherein a printing plate with a print relief then impresses a color foil at least in sections flatly on the negative print image in a second printer and the blank spaces of the negative print image are printed with an ink of the color foil.

8. The method according to claim 7, wherein the first printer is provided to apply the negative print image with a digitally controlled thermal print head with a number of heating elements.

9. The method according to claim 8, wherein the negative print image is generated by impressing a first ink, in particular wherein the first ink comprises white pigments and is preferably transferred from an ink ribbon.

10. The method according to claim 1, wherein in the negative print image, outside of the blank spaces, a surface of the medical package is heated with the first printer to above 130° C., preferably above 140° C. and/or below 200° C., preferably below 190° C.

11. The method according to claim 1, wherein outside of the negative print image applied with the first printer, a surface of the medical package, in particular of the foil, is printed with the ink of the impressed color foil with at least one item of information.

12. The method according to claim 1, wherein the ink of the impressed color foil is applied by means of a hot stamp printing process.

13. The method according to claim 12, wherein the printing plate used in the hot stamp printing process comprises a flat section which is impressed on the surface to be printed inside of the negative print image applied with the first printer and wherein the printing plate comprises at least one further section via which static information is impressed outside of the negative print image applied with the first printer.

14. The method according to claim 1, wherein variable information, in particular a serial number, a batch number and/or an expiry date, is applied at least with the first printer and/or in that static information, in particular product name, a barcode and/or a data matrix code, is applied by the second printer.

15. The method according to claim 1, wherein black pigments and a resin are contained in the ink of the impressed color foil.

16. The method according to claim 1, wherein a foil is printed from which the medical package is manufactured.

17. A medical package, manufactured using a method and/or by means of a system according to claim 1.

18. The medical package made of plastic according to claim 17, comprising a first print region with a negative print image applied in the thermal transfer printing process, wherein blank spaces in the negative print image, by way of which at least one section of a print image is defined, are filled with an ink applied in the hot stamping process.

19. The medical package made of plastic according to claim 17, wherein the negative print image applied in the thermal transfer printing process is provided by a first ink, wherein the first ink and the ink applied as the second ink in the hot stamp printing process adjoin one another directly.

20. The medical package according to claim 1, wherein variable and/or static information is provided by the ink, which fills the blank spaces of the negative print image.

21. The medical package according to claim 1, comprising a second print region which is printed with the second ink applied in the hot stamping process, wherein the second print region is arranged separate from the first print region on the package and wherein static information is applied in the second print region.

22. The medical package according to claim 1, wherein the medical package is formed as a bag and/or in that the medical package is arranged in a secondary package, in particular formed as a tear-open bag.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0110] The subject matter of the invention will be explained in more detail below with reference to the drawings FIG. 1 to FIG. 7.

[0111] FIG. 1 is a schematic view of a system for manufacturing a medical package.

[0112] FIG. 2 is a schematic representation of a printing process by means of a thermal transfer printer.

[0113] FIG. 3 is a schematic representation of a printing process by means of a hot stamp printer.

[0114] FIG. 4 is a view of an exemplary embodiment of a medical package.

[0115] FIG. 5 is a view of the print relief used for the medical package.

[0116] FIG. 6a to FIG. 6c show the steps via which a region is printed with a variable print image.

[0117] FIG. 7 is a flow diagram of the method steps according to an exemplary embodiment of the method according to the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

[0118] FIG. 1 is a schematic view of a system 1 for manufacturing a medical package 2.

[0119] Using the system 1, a foil 3, which is provided by a tape 4, is printed with a first printer 10 and a second printer 20.

[0120] The first printer 10 and the second printer 20 are arranged one behind the other such that the foil 3 can be guided successively along the two printers 10, 20.

[0121] The first printer 10 is formed as a thermal transfer printer. The thermal transfer printer 10 comprises a digitally controllable thermal print head 12 which is actuated by a control device 6. The thermal print head 12 transfers the ink 11b of a color foil 11 to the foil 3. Thus, a variable print image can be applied by, for example, the thermal print head 12 printing a region of the foil 3 line by line. In this case, a negative print image is applied on the foil 3.

[0122] The color foil 11 can for example be provided as an ink ribbon which is unwound from a roll. The ink 11b of the color foil 11 can also be referred to here as the first ink 11b.

[0123] The second printer 20 is formed as a hot stamp printer. It comprises a printing plate 22 which is heated and impressed on the surface of the foil 3 to be printed. The ink 21b of a color foil 21 is transferred via the printing plate 22 on the foil 3. The ink 21b of the color foil 21 can also be referred to here as the second ink 21b.

[0124] The printing plate 22 comprises a print relief 24 (see FIG. 5) with a flat section 24a by way of which blank spaces 44 of the negative print image 40 are filled.

[0125] The printed foil 3 is then supplied to a station 5 for manufacturing a medical package 2 with a filling device and a sealing device.

[0126] The station 5 for manufacturing a medical package 2 in the form of a foil bag 30 comprises a welding tool for manufacturing the bag 30, a filling device for filling the bag and a sealing device for sealing the filled bag.

[0127] Possible other stations for manufacturing the medical package 2 include in particular a station for packaging into a secondary package and/or a station for preferably thermal sterilization.

[0128] As a result, a medical package 2 made from plastic and which is formed as a foil bag 30 in this embodiment, is provided with a first and a second ink, in particular with a black and white print.

[0129] FIG. 2 schematically shows the thermal transfer printer 10.

[0130] The thermal transfer printer 10 comprises the thermal print head 12, which is actuated by the control device 6 and comprises a number of heating elements 13 which can be individually actuated. As a result, a print image with variable information can be produced.

[0131] A color foil 11, in particular formed as an ink ribbon, with the support 11a and the colored layer 11b is moved relative to the thermal print head 12 and is heated in regions via the individually actuatable heating elements.

[0132] The ink of the colored layer 11b is liquefied in this way and is transferred to the foil 3 as the first ink 11b.

[0133] Thus, a print image, which in particular comprises pixels formed from the ink of the colored layer 11b, can be applied in a digitally controlled manner.

[0134] FIG. 3 is a schematic representation of the second printer 20, which is formed as a hot stamp printer.

[0135] The hot stamp printer 20 comprises a heatable support 23 to which a printing plate 22 is attached which comprises a print relief 24.

[0136] The printing plate 22 is impressed on the color foil 21 which comprises the support 21a and the colored layer 21b.

[0137] In the region of the protruding print relief 24, the ink of the colored layer 21b is heated and transferred under pressure and temperature as the second ink 21b from the color foil 21 to the foil 3.

[0138] FIG. 4 is a representation of an exemplary embodiment of a medical package 2 which is formed as a foil bag 30.

[0139] The medical package 2 or the foil bag 30 consists of foils 3 welded together at the transverse weld seams 32 and the longitudinal weld seams 31.

[0140] Furthermore, the foil bag 30 comprises connectors 33a, 33b via which liquid can be withdrawn and/or added.

[0141] The connectors 33a, 33b are welded into a transverse weld seam 32 in the case of this exemplary embodiment and comprise a break-off cap. After removing the break-off cap, a fluid connection can be established, for example by inserting a spike or a needle.

[0142] Furthermore, the foil bag 30 comprises a hanger 34.

[0143] The foil bag 30 is laid into a secondary package 7 in the example represented. The secondary package 7 is formed here as a tear-open bag and serves in particular as a barrier against oxygen.

[0144] In the case of manufacture, the foil bag 30 filled with the medical liquid is autoclaved in the secondary package 7 such that the content of the secondary package 7, in particular the entire foil bag 30, is sterile.

[0145] The foil bag 30 is printed.

[0146] The print image comprises a region 35 with variable information. The variable information can in particular comprise a serial number, a batch number and/or an expiry date.

[0147] Furthermore, the print image comprises a region with static information 36. The region with static information 36 comprises in this exemplary embodiment firstly a print image 36a visually readable by humans, i.e. for example a label with contents and/or the product name. Secondly, the region comprises machine-readable information, for example in the form of a barcode 36b. This can for example serve as machine-readable information regarding the content of the medical package 2.

[0148] The print regions of the print image with variable information 35 and of the printed region with static information 36, represented in black in FIG. 4, are applied with the second printer 20 after the region 35 with variable information has been printed beforehand by the first printer 10, with the printing plate 22 represented in FIG. 5 being used. The first printer 10 impresses the first ink 11b. The second printer 20 impresses the second ink 21b.

[0149] The printing plate 22 comprises a print relief 24, which comprises the flat section 24a, inside of which the second ink 21b serves to fill the blank spaces 44 of the print image 40 (see FIG. 6a-6c) of the first printer 10 which is provided by the first ink 11b.

[0150] In the further, non-flat section 24b, the print relief 24 comprises information readable by a human and/or by a machine. In this exemplary embodiment, the information comprises a label and a barcode. The visually readable information 36a and the barcode 36b represented in FIG. 4 are transferred on the foil 3 via the non-flat section 24b of the print relief 24.

[0151] The steps in relation to printing the region 35 with variable information are represented in FIGS. 6a to 6c.

[0152] First, as represented in FIG. 6a, a print image 40 is applied by means of the first printer 10 which is formed as a thermal transfer printer. The print image 40 is a negative print image here which contains blank spaces 44. The blank spaces 44 of the print image 40 represent the actual information.

[0153] In this exemplary embodiment, the blank spaces 44 comprise a barcode 41, a data matrix code 42 and a label 43 containing for example an expiry date and/or a serial number.

[0154] This negative print image is formed by the first ink 11b of the color foil 11 of the first printer 10. The first ink 11b is in particular a white color.

[0155] The machine-readable information, i.e. e.g. the barcode 41 and/or the data matrix code 42, is readable via a scanner since the blank spaces 44 do not reflect light or only reflect a little light and appear dark to a scanner.

[0156] The label 43 is, however, difficult for the human eye to read.

[0157] Then, as represented in FIG. 6b, the foil 3 is printed by means of the second printer 20 formed as a hot stamp printer. In this process, the flat section 24a of the print relief 24 with the second ink 21b lies inside the print image 40 of the first printer 10 which has transferred the first ink 11b.

[0158] The blank spaces 44 of the print image 40 are filled with the second ink 21b. As represented in FIG. 6c, the print image 50 generated by the two printers 10, 20 now contains the print image 40 and the printed blank spaces 44 which are filled with the second ink 21b in the hot stamp printing.

[0159] At the same time, a further region 36 (see FIG. 4) is printed with static information in one step.

[0160] In the first print region 35 which is a combination of thermal transfer and hot stamp printing, a black and white print results which consists of a negative print image with white color of the first ink 11b whose blank spaces 44 are filled by the second black ink 21b.

[0161] The first print region 35 is smaller than the entire region of the print region of the second printer 20 and comprises variable, machine-readable information and variable, visually readable information. The first print region 35, in particular additionally, also contains static information.

[0162] In FIG. 7, the method steps according to one exemplary embodiment of the invention are represented.

[0163] First, a negative print image 40, which contains at least variable information, is impressed on a foil 3 by means of a thermal transfer printer 10. The negative print image 40 is generated here by the first ink 11b.

[0164] Then, a printing plate 22 is impressed on the foil 3 by means of a hot stamp printer 20. A flat section 24a of the print relief 24 of the printing plate 22 overlaps with the negative print image 40. The blank spaces 44 of the negative print image 40 are filled with the second ink 21b of the hot stamp printer 20.

[0165] Then, the foil 3 is welded to form a foil bag 30, the foil bag 30 is filled and sealed. The sealed foil bag 30 is preferably then also enclosed in a secondary package 7 and the medical package 2 manufactured in this way is lastly autoclaved.

[0166] A method for manufacturing medical packages, in particular foil bags, is provided by the invention by means of which variable and static information can be, in particular simultaneously, applied in a very effective and accurate manner.

LIST OF REFERENCE NUMERALS

[0167] 1 System for manufacturing a medical package [0168] 2 Medical package [0169] 3 Foil [0170] 4 Roll [0171] 5 Station for manufacturing the bag, together with filling station and station for sealing [0172] 6 Control device [0173] 7 Secondary package [0174] 10 First printer/thermal transfer printer [0175] 11 Color foil [0176] 11a Support [0177] 11b Colored layer/(first) ink [0178] 12 Thermal print head [0179] 13 Heating element [0180] 20 Second printer/hot stamp printer [0181] 21 Color foil [0182] 21a Support [0183] 21b Colored layer/(second) ink [0184] 22 Printing plate [0185] 23 Support [0186] 24 Print relief [0187] 24a Flat section [0188] 24b Non-flat section [0189] 30 Foil bag [0190] 31 Longitudinal weld seam [0191] 32 Transverse weld seam [0192] 33a Connector [0193] 33b Connector [0194] 34 Hanger [0195] 35 First print region/region with variable print image [0196] 36 Second print region/region with static print image [0197] 36a Visually readable print image [0198] 36b Machine-readable information/barcode [0199] 40 Negative print image/print image thermal transfer printer [0200] 41 Barcode [0201] 42 Data matrix code [0202] 43 Label [0203] 44 Blank space