Scraper for silk-screen printing

Abstract

The invention relates to a scraper for silk-screen printing which comprises a rake face. The rake face is arranged on one side of the heading direction of the scrapper and forms a preset included angle with a silk-screen plate at utilization time. The scraper further comprises an inclined pressure applying face forming a preset included angle with the rake face. The bottom edge of the inclined pressure applying face is connected to the rake face so as to jointly form, with the silk-screen plate, a thick liquid scrapping face of a wedge-shaped thick liquid storage area with an opening facing the heading direction of the scrapper at utilization time. The scraper for the silk-screen printing can evenly apply pressure to thick liquid, so that the uniformity of the silk-screen printing products can be improved.

Description

technical field [0001] The present invention relates to a doctor blade for screen printing. Background technique [0002] Screen printing is a printing technology with low cost, high efficiency and good printing quality. It is widely used in the fields of circuit boards, glass screens, textile printing and dyeing, outer packaging, graphic printing and so on. Screen plates and scrapers are the main parts of screen printing, which have a great influence on printing quality. Commonly used scrapers in the prior art, such as application number 201020607495.1, authorized announcement number CN 20193170U, disclose a screen printing scraper device in a Chinese patent, including a bracket and a scraper fixed obliquely on the bracket, wherein the scraper is made of rubber , in the shape of a rectangular plate, with a front surface facing the forward direction and a bottom edge for pressing the screen, and the part of the front surface close to the bottom edge is the rake face. When ...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned scraper can also be used in other industries, such as printing frame patterns of mobile phone display screens. At this time, the slurry is ink. In the initial stage of the printing operation, the amount of ink stored under the scraping surface of the scraper is relatively large, and the scraping surface The pressure on the upper layer of ink is easily transferred to the ink in contact with the screen plate, and the ink in contact with the screen plate can also be easily transferred to the substrate through the mesh on the screen plate, and the amount of transferred ink is even. The printing quality is stable; however, after a certain period of printing, such as figure 1 As shown, the ink 93 stored under the scraper 91 is relatively less, the pressure generated by the scraper 91 on the upper layer of ink will be uneven, and the pressure transmitted to the ink 93 in contact with the screen plate 92 will also be uneven, so that the ink appears a low-pressure area 94, will affect the transmittance of the ink, so that the ink passing through the mesh on the screen plate at the low pressure area 94 will be relatively reduced, resulting in different color differences in the printed patterns of the same product, and at the same time, the same batch and different batches The product will also have color difference, poor product consistency, and even waste products such as lack of ink, which affects product quality

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