阅读说明：本技术 一种改善印花版辊跳刀痕的印刷工艺 (Printing process for improving printing roller jumping mark ) 是由 刘巍 朱杰 丁菊炎 于 2020-07-01 设计创作，主要内容包括：本发明公开了一种改善印花版辊跳刀痕的印刷工艺,属于转移印花技术领域,该工艺包括如下步骤：(1)利用电脑对花型分色,整稿；(2)利用电雕机雕刻转移印花版辊,形成网穴；(3)配制浆料；(4)将浆料进入版辊；(5)铺设转移印花纸并压印；(6)将印有图案的转移印花纸用于印染织物。本发明工艺可以有效改善转移印花过程中印花版辊的跳刀痕。(The invention discloses a printing process for improving the jumping cutter mark of a printing roller, belonging to the technical field of transfer printing, and the process comprises the following steps: (1) utilizing a computer to separate colors of the patterns and finish the manuscript; (2) carving the transfer printing roller by using an electric carving machine to form a mesh opening; (3) preparing slurry; (4) feeding the slurry into a plate roller; (5) laying transfer printing paper and impressing; (6) the transfer printing paper printed with patterns is used for printing and dyeing fabrics. The process can effectively improve the jumping knife mark of the printing roller in the transfer printing process.)

1. A printing process for improving the jump cutter mark of a printing plate roller is characterized by comprising the following steps:

(1) utilizing a computer to separate colors of the patterns and finish the manuscript;

(2) carving the transfer printing roller by using an electric carving machine to form a mesh opening;

(3) preparing slurry, wherein the slurry comprises the following raw materials in parts by weight:

(4) adding the slurry prepared in the step (3) into a slurry storage basin, stopping the slurry storage basin before the slurry storage basin is close to an overflow state, vertically placing the slurry storage basin below a printing roller, enabling the slurry to completely cover the rotating printing roller in the slurry storage basin, filling the slurry into a mesh opening according to the rheological property and viscosity of the slurry, and enabling the slurry to fully enter the mesh opening on the printing roller through the friction of a scraper on the printing roller and scraping and rubbing the slurry at a non-pattern position;

(5) paving transfer printing paper on the top of the printing roller obtained in the step (4), impressing the transfer printing paper through a rubber roller, transferring the slurry in the mesh of the printing roller to the printing paper through an extrusion mode to form printing paper with a flower-shaped pattern, wherein the pressure of the rubber roller is 2-3mpa, and drying the printing paper through circulating hot air of an oven at the temperature of 60-70 ℃; confirming the number of the printing rollers according to the number of pattern color separations;

(6) the printing paper formed by the stamping of one printing roller is stretched by the tension applied by a far-end winding device and is operated by a transmission device of the printing roller, and the printing paper is driven by the tension generated by the next printing roller to operate and separate from the printing roller in the operation process;

(7) and (4) applying the transfer printing paper printed with the patterns obtained in the step (6) to printing and dyeing of fabrics.

2. The printing process according to claim 1, wherein in step (1), the pattern is a non-solid stripe or lattice type pattern.

3. The printing process of claim 1, wherein in step (2), the vibration of the graver moves relative to the surface of the rotating cylinder to generate a triangular motion track, thereby forming a diamond-shaped inverted square cone cell.

4. The printing process according to claim 1, wherein in the step (2), the lattice pattern is engraved according to a normal engraving process, the edge of the normal pattern is extended and engraved at an extended distance of 1cm, the depth of the extended position is shallow, and the color generated on the printing paper is negligible after being pressed with the other pattern positions; the expansion area forms a transition area between the normal pattern position and the non-pattern position, and the phenomenon that a scraper generates a cutter jumping mark due to the rapid change of a plane when a plate roller runs in the production process is prevented.

5. The printing process as claimed in claim 1, wherein in the step (2), the depth of the cells at the normal pattern position is 45-60 μm, the depth of the cells at the expanded region is 5-10 μm, the number of engraved cells is 48-60 lines/cm, and the engraving angle is 130-145 °.

6. The printing process of claim 1, wherein in the step (3), the dye comprises one or more of disperse red 60, disperse yellow 54, disperse yellow 60, disperse blue 72, disperse blue 359 and disperse black; the alcohol is one or more of methanol, ethanol, propanol, isopropanol and isobutanol; the auxiliary agent comprises one or more of wetting agent, defoaming agent, stabilizer, flame retardant, antistatic agent and filler.

7. A printing process as claimed in claim 1, wherein in step (3), the viscosity of the paste is from 17 to 21 s.

Technical Field

The invention relates to the field of transfer printing, in particular to a printing process for improving a printing roller jumping knife mark.

Background

Transfer printing is a common method for textile printing, which is to print dye pigment on transfer printing paper, then transfer the dye in the pattern to the textile by heat treatment during transfer printing, and fix to form the pattern. When printing, the side with patterns on the transfer paper is overlapped with the fabric, and the pattern is transferred from the paper to the fabric after hot pressing at high temperature (220 ℃) for about 1 min. After printing, no water washing treatment is needed, so that no sewage is produced, and the effects of bright color, clear gradation and delicate flower shape can be obtained.

The plate roller is a common part in the working procedures of printing and the like, in the existing plate making industry, the surface treatment after the plate roller is plated with copper mainly comprises the steps of rough grinding → fine grinding → polishing → inspection after polishing, and the performance of a printing product is directly influenced by the quality of the plate making.

Disclosure of Invention

In view of the above problems in the prior art, the applicant of the present invention provides a printing process for improving the jump mark of a printing plate roller. The process can effectively improve the jumping knife mark of the printing roller in the transfer printing process.

The technical scheme of the invention is as follows:

a printing process for improving the jump cutter mark of a printing plate roller comprises the following steps:

(1) utilizing a computer to separate colors of the patterns and finish the manuscript;

(2) carving the transfer printing roller by using an electric carving machine to form a mesh opening;

(3) preparing slurry, wherein the slurry comprises the following raw materials in parts by weight:

(4) adding the slurry prepared in the step (3) into a slurry storage basin, stopping the slurry storage basin before the slurry storage basin is close to an overflow state, vertically placing the slurry storage basin below a printing roller, enabling the slurry to completely cover the rotating printing roller in the slurry storage basin, filling the slurry into a mesh opening according to the rheological property and viscosity of the slurry, and enabling the slurry to fully enter the mesh opening on the printing roller through the friction of a scraper on the printing roller and scraping and rubbing the slurry at a non-pattern position;

(5) paving transfer printing paper on the top of the printing roller obtained in the step (4), impressing the transfer printing paper through a rubber roller, transferring the slurry in the mesh of the printing roller to the printing paper through an extrusion mode to form printing paper with a flower-shaped pattern, wherein the pressure of the rubber roller is 2-3mpa, and drying the printing paper through circulating hot air of an oven at the temperature of 60-70 ℃; confirming the number of the printing rollers according to the number of pattern color separations;

(6) the printing paper formed by the stamping of one printing roller is stretched by the tension applied by a far-end winding device and is operated by a transmission device of the printing roller, and the printing paper is driven by the tension generated by the next printing roller to operate and separate from the printing roller in the operation process;

(7) and (4) applying the transfer printing paper printed with the patterns obtained in the step (6) to printing and dyeing of fabrics.

In the step (1), the patterns are non-pure color stripes or lattice patterns.

In the step (2), the vibration of the graver and the surface of the rotating roller move relatively to generate a triangular motion track to form a diamond-shaped mesh of the inverted square cone.

In the step (2), the lattice pattern is carved according to a normal carving process, the edge of the normal pattern position is expanded and carved, the expansion distance is 1cm, the depth of the expansion position is shallow, and the color generated on the printing paper and the color of other pattern positions can be ignored after being pressed; the expansion area forms a transition area between the normal pattern position and the non-pattern position, and the phenomenon that a scraper generates a cutter jumping mark due to the rapid change of a plane when a plate roller runs in the production process is prevented.

In the step (2), the depth of the mesh at the normal pattern position is 45-60 microns, the depth of the mesh in the expansion area is 5-10 microns, the number of engraved mesh lines is 48-60 lines/cm, and the engraving angle is 130-145 degrees.

In the step (3), the dye comprises one or a mixture of more of disperse red 60, disperse yellow 54, disperse yellow 60, disperse blue 72, disperse blue 359 and disperse black; the alcohol is one or more of methanol, ethanol, propanol, isopropanol and isobutanol; the auxiliary agent comprises one or more of wetting agent, defoaming agent, stabilizer, flame retardant, antistatic agent and filler.

In the step (3), the viscosity of the slurry is 17-21 s.

The beneficial technical effects of the invention are as follows:

the process can effectively improve the jumping knife mark of the printing roller in the transfer printing process. The angle of the scraper is adjusted, the angle is reduced, the contact area between a knife edge and the printing roller is increased, the phenomenon that a jump knife mark is formed due to strong fluctuation generated at the connection part of the pattern of the printing roller with an overlarge angle is reduced, and when a copper roller is engraved by a normal electric engraving knife, the set data is engraved to form a continuous, compact and regular small mesh. Obvious at the connection part with or without patterns. The engraved cells protrude at the edge positions. On the basis, the novel process is characterized in that 1cm is expanded at the outer edge to serve as a transition area during pattern design, and carving holes in the transition area are small, so that color cannot be generated or is light to be negligible. The transition area can effectively relieve the situation that the pressure of the doctor blade is rapidly changed at the pattern connection position during production.

According to the invention, through specific operation processes of pattern design, roller plate engraving, slurry preparation, transfer printing and the like, the problem of no jump cutter mark of a final product is solved.

Drawings

FIG. 1 is a schematic view of the engraving of the present invention;

wherein, the upper figure is the original engraving method, and the lower figure is the engraving method of the invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.