Process and device for producing an analytical tape for liquid samples
View Patent ↗The invention concerns a process for producing an analytical tape for liquid samples in which a rollable transport tape is provided with test fields that are spaced apart in the direction of the tape for analyzing the liquid samples. A multilayered test label tape is prefabricated from at least a detection film and an adhesive tape and subsequently the test fields are transferred as self-adhesive test labels from the test label tape onto the transport tape.
1. A process for producing an analytical tape for liquid samples, the process comprising the steps of:
providing a rollable transport tape,
forming a test label tape including at least a detection film and a double-sided adhesive tape, the forming of the test label tape comprising:
bonding the detection film to a first side of the adhesive tape while keeping lateral adhesive strips on the first side of the adhesive tape free, and
cutting or punching the test label tape to form individual, detachable self-adhesive test labels, a second side of the double-sided adhesive tape forming a bottom adhesive side of the test labels, and
transferring the self-adhesive test labels from the test label tape onto the transport tape, wherein the test labels are spaced apart in the direction of the transport tape and form test fields for analyzing the liquid samples, and wherein the bottom adhesive sides of the test labels are bonded to the transport tape.
2. The process of claim 1 wherein the adhesive tape is stabilized by an intermediate foil, which is coated on both sides with adhesive.
3. The process of claim 1 wherein the detection film is covered by a cover layer that is in the form of a fabric or fleece.
4. The process of claim 3 wherein the cover layer is wider than the detection film and is held by the adhesive tape.
5. The process of claim 3 wherein the cover layer is provided with a water-repellent impregnation outside a detection zone.
6. The process of claim 3 wherein an impregnation agent is printed in a strip shape at sides of the detection film by a printing process.
7. The process of claim 3 wherein a filament structure forming the cover layer is coated with an impregnation agent.
8. The process of claim 1 wherein the adhesive tape includes a carrier sheet, and the carrier sheet is transferred from a feed spool to a take-up spool.
9. The process of claim 1 wherein the test labels are produced as detachable generally flat structures on a carrier sheet of the adhesive tape by cutting or punching from a cover layer covering the detection film down to the depth of the carrier sheet.
10. The process of claim 1 wherein the adhesive tape includes a carrier sheet, the test labels are detached from the carrier sheet of the adhesive tape by deflection over a dispensing edge and labeled onto the transport tape, and the transport tape is transferred from a feed spool to a take-up spool.
11. The process of claim 1 wherein a multitrack test label tape is formed by several detection films next to one another on an adhesive tape.
12. The process of claim 11 wherein the multitrack test label tape is divided in sections into multiple test labels by cutting or punching.
13. The process of claim 12 wherein the multiple test labels or the label blocks are labeled spaced apart onto the transport tape and subsequently the transport tape is divided longitudinally into individual tracks.
14. The process of claim 11 wherein the multitrack test label tape is divided in sections into label blocks comprising several individual test labels lying next to one another by cutting or punching.