Novel environment-friendly multifunctional satellite type washing-free gravure direct printing technology

Abstract

The invention discloses a novel environment-friendly multifunctional satellite type washing-free gravure direct printing technology. An existing satellite type flexo printing machine and environment-friendly washing-free water-based ink are adopted. Different from the existing satellite type flexo printing machine, a large-diameter center roller serves as a base material bearing roller, and the material of the large-diameter center roller is rubber not steel; and a printing plate is gravure, the electric carving technology is adopted, and the material of the printing plate is steel not flexible material. The center large-diameter roller also serves a guide belt for printing fabric, a guide belt glue automatic feeding device and an automatic cleaning device are arranged, the rubber on the surface of the center large-diameter roller is coated with the guide belt glue, the fabric is attached to the rubber large roller for direct printing, the problem that multiple color registers do not have tension is solved, and registration is accurate. The characteristics that occupied space is smaller than the occupied space of an existing photogravure press, few printing materials are wasted, cost is saved, the machine table efficiency is high, and printing of multifunctional materials is wide; and steaming washing is not needed, and the fabric is more bright in color/higher in depth sense compared with fabric printed by the existing satellite type flexo printing machine are achieved.

Description

technical field [0001] The invention belongs to the technical field of fabric printing, and in particular relates to a novel environment-friendly multifunctional satellite-type washing-free gravure direct printing process. Background technique [0002] Fabric printing methods are currently divided into three categories in the printing and dyeing industry, one is flat screen printing or rotary screen printing, the other is thermal transfer printing using disperse dye inks, and the other is using disperse dye inks. Inkjet printing printing method. [0003] Flat screen printing or rotary screen printing is a traditional printing method, which has the advantages of short process flow and low printing production and processing costs. There are many dyes, and they enter the washing solution in large quantities during washing, resulting in excessive wastewater discharge. At the same time, these unfixed dyes may even stain the white ground of polyester printed fabrics, causing qual...

AI Technical Summary

Problems solved by technology

[0006] First, the ink needs to be printed on the paper using a unit-type gravure printing machine, and then transfer printing on the thermal transfer machine. It needs to be completed in two process steps. The intermediate transfer carrier, the paper, cannot be reused, which is not economical and environmentally friendly. Low speed during thermal transfer printing

Because there is no affinity between natural fibers and other hydrophilic fibers and the dyes used in thermal transfer printing, it can only be printed on polyester fabrics at present, which limits the scope of application

[0007] (3) Using paper as the substrate of thermal transfer printing does not fundamentally solve environmental problems

Because water consumption and pollution caused by papermaking and waste paper recycling are still very serious

[0008] (4) The printing process is long, and it is necessary to use a printing machine such as a gravure printing machine or a flexographic printing machine to print the disperse dye ink on a special transfer paper, or use an inkjet printer to print the disperse dye ink on a special transfer paper. On the printing paper, transfer printing equipment is used to transfer the disperse dyes to the polyester fabric. During this transfer process, the utilization rate of the disperse dyes is not high, and a considerable part of the disperse dyes are left on the transfer paper. A large amount of transfer printing waste paper is produced, resulting in the consumption of a large amount of paper resources. At the same time, due to the use of low-temperature disperse dyes after thermal transfer printing of polyester fabrics, its color fastness to sublimation and color fastness to ironing are poor.

[0009] (5) Fabric transfer printing usually uses solvent-based inks. Printing solvent-based inks has a great impact on the environment, and the resulting VOC emissions are large

If the volatilization is too fast, it may cause faults such as blockage and poor gloss of the ink layer; if the volatilization speed is too slow, it may cause faults such as adhesion

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