A production process and device for improving the coding fastness of pp-r pipeline ink

Abstract

The invention discloses a production technology and a device of improving fastness of an ink jetted code on a PP-R pipeline. According to the technology, the surface of the pipeline is coated with a water-proof bottom layer before code ink jetting of the pipeline; the water-proof bottom layer increases surface free energy of the PP-R pipeline and a bonding force between ink and the pipeline; the jetted code fastness of the ink jetted code on the PP-R pipeline is improved. According to the technology, the surface of the pipeline is coated with the water-proof bottom layer by a circular arc sponge head; the water-proof bottom layer comprises a base material, a waterproofing agent, a curing agent, a surfactant, an adhesive and an environment-friendly plasticizer that are in defined parts; the molecular polarity of the surface of the PP-R pipeline can be improved effectively; the adhesion between the ink and the PP-R pipeline is increased, so that the jetted code fastness is improved; the appearance of the obtained PP-R pipeline is identical with that of the original pipeline; the jetted code fastness is improved by 3 times or above; the technology is simple to operate and easy to achieve, and has no influence on a production speed; the surface of the obtained PP-R pipeline is not damaged; long-term heat resistance pressure of a product is effectively ensured; the product can be used for 50 years or more.

Description

technical field [0001] The invention belongs to the technical field of pipeline production, and in particular relates to a production process and device for improving inkjet code fastness of PP-R pipelines. The process can effectively improve the adhesion of inkjet code on pipelines and improve product quality. Background technique [0002] Due to its excellent characteristics, PP-R pipes have become the preferred material for indoor home improvement pipes. The PP-R pipes in the market are mainly green, gray and white, and the colors can also be customized according to customer needs. The PP-R pipeline standard clearly states that there should be a permanent mark on the pipeline, and the content of the mark includes the manufacturer's name, trademark, standard number, specification and size, standard number, production date and other information. At present, the marks of PP-R pipes of domestic and foreign brands are all marked in the form of inkjet coding. In recent years,...

AI Technical Summary

Problems solved by technology

Therefore, the coding on the PP-R pipe is easy to fall off under the action of external force, resulting in the disappearance of the coding content

PP-R pipes are pressure pipes, which must be used for 50 years under a certain pressure. At the same time, most PP-R pipes are used in hot water, and the surface is not allowed to be damaged. Therefore, laser coding cannot be used for PP-R pipes. At the same time, the clarity and aesthetics of laser printing are relatively poor

Some pipe manufacturers will use plasma treatment to spray ink. The fastness of the code after plasma treatment has been improved, but the code will still fall off after sticking with transparent tape.

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