How to proceed in case of potential complaints
Our aim is to maintain the highest quality in proportion to the selling price. During the printing of adhesive tapes, various colours are applied to various foil materials. We continually test the foils and colours of our permanent suppliers as well as other suppliers, in order to be able to always manufacture the best product for you, our customers. We generally recommend ordering a supply for approximately 6 months. Longer storage of the tape may cause its devaluation.
If any problems appears with your consignment, we would like to examine this problem in detail. We would like to ask you to send us a minimum of 5 rolls of printed adhesive tapes. If your consignment was larger (more than 500 roll), we would like to ask you to send a minimum of 15 rolls from different boxes of the consignment (there are 36 pieces in a package) to our address. This is not because we do not believe you, but it is due to the fact that we always want to detect these problems, so as to avoid them in future. Every production is documented in the manufacturing, including the types of colours, foil, adhesive, corona charge. With your help, we can thus be even better.
If we confirm a fault for you, we will offer an additional supply or other compensation upon agreement.
Please aim our complaints at this email address: email@example.com
Many printed materials, such as for example PE and PP, has a chemically inert and non-porous surface with low surface tension. Due to this, no bonds are created here with colours, protective coats or adhesives. In order for the adhesive or the colour to adhere to the foil, it is necessary to pre-treat the foil, for example with corona treatment. Materials such as polyethylene, polypropylene, nylon, vinyl, PVC, PET, metal-coated surfaces, foil, but also paper and cardboard are usually treated using this method.
Corona charging needs to be set up according to the thickness of the foil, and some foils a charged several times. In flexo printing, a material is used with the adhesive already applied, which also only adheres to the foil because it was previously corona charged. Before printing, the tape is charged again from the other side, where the adhesive was not applied, and it is printed.
In case of any printing, here, too, problems may occur, when one charging, for example, overrides another and either the adhesive does not adhere to the take, or the second charging before printing is too weak and the adhesive pulls down the entire print.
In case of sandwich printing, a similar problem may occur, when the voltage disappears from the foil between the printing and the subsequent application of adhesive and the adhesive does not adhere well.
The strength of the charge of course depends on the thickness of the foil, and hard though we may try, on an area of several thousand square metres, minimal variations in thickness may appear during production. These variations cannot be measured by a mere eye, but a tiny variation always appears during printing.