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Flexible scraping knife for soft printing plate/gravure printing plate

A flexible and gravure technology, applied to the general parts of printing machinery, printing, printing machines, etc., can solve the problems of easy wear or scratch of the cutting edge, residual printing quality after scraping ink, etc. The effect of reducing the cost of use

Inactive Publication Date: 2013-01-23
KHAINAN YAYUAN ANTI TSOUNTERFEIT TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like Figure 5 As shown, the cutting edge is in line contact with the flexographic anilox roller or gravure roller, and the cutting edge is easily worn or scratched, which will easily lead to scraping ink residue and printing quality problems

Method used

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  • Flexible scraping knife for soft printing plate/gravure printing plate
  • Flexible scraping knife for soft printing plate/gravure printing plate
  • Flexible scraping knife for soft printing plate/gravure printing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 , Figure 5 As shown, order a 420mm long, 50mm wide, 0.8mm thick, carbon fiber (or glass fiber) material strip with good stiffness, and use it as a strip-shaped support back knife (1).

[0029] Such as image 3 As shown, order a polyurethane strip body with a length of 420mm, a thickness of 1.5mm, a width of 15mm, a Shore hardness of 85A-95A, and a density of 300-700kg / m3, and use it as a flexible strip body (2).

[0030] Such as figure 1 As shown, the flexible strip body (2) is firmly pasted on the strip-shaped supporting back knife (1), thereby making a flexible scraper for gravure of the present invention.

[0031] Install the gravure plate made in the previous step on the gravure printing machine with a flexible scraper, and press its corner (5) against the gravure plate roller (4) so ​​that the corner (5) of the flexible strip body (2) is aligned with the gravure plate A contact surface (7) with a width of 1mm×420mm is formed between the print...

Embodiment 2

[0034] Such as figure 2 , Figure 5 As shown, order a 420mm long, 50mm wide, 1mm thick acrylic material strip with good stiffness, and use it as a strip-shaped support back knife (1).

[0035] Such as image 3 As shown, order a polyurethane strip body with a length of 420mm, a thickness of 1.2mm, a width of 15mm, a Shore hardness of 85A-95A, and a density of 300-700kg / m3, and use it as a flexible strip body (2).

[0036] Such as figure 2 As shown, the flexible strip body (2) is firmly pasted on the strip-shaped supporting back knife (1), thereby making a flexible scraper for flexographic printing according to the present invention.

[0037] Install a flexo scraper made in the previous step on the flexo printing machine, and press its corner (5) against the flexo anilox roller (3) so that the corner (5) of the flexible strip body (2) A contact surface (7) with a width of 0.7mm×420mm is formed between the flexo printing anilox roller (3) and due to compression deformation. ...

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Abstract

The invention provides a flexible (printing ink) scraping knife for a soft printing plate / gravure printing plate. According to the flexible (printing ink) scraping knife for the soft printing plate / gravure printing plate, a flexible strip body is adhered on a rear strip shaped supporting knife; one angle of the flexible strip body is in surface contact with a soft printing anilox roller or a gravure printing roller; and the excessive printing ink can be removed by rubbing the soft printing anilox roller or the gravure printing roller. With the adoption of the flexible (printing ink) scraping knife for the soft printing plate / gravure printing plate provided by the invention, the printing quality can be improved, and the usage cost of the scraping knife can be reduced.

Description

technical field [0001] The invention relates to the technical field of printing consumables, in particular to an ink scraper for flexo printing or gravure printing. Background technique [0002] Existing flexo and gravure ink scrapers are all sharp-edged rigid scrapers, which function to scrape off excess ink on the surface of flexo anilox rolls or gravure rolls. Such as Figure 5 As shown, the cutting edge is in line contact with the flexographic anilox roller or the gravure roller, and the cutting edge is easily worn or scratched, which will easily lead to scraping ink residue and printing quality problems. For this reason, Chinese utility model patent CN201979788U discloses "a titanium nitride metal-coated ink scraper", which has been plated with chrome and titanium nitride metal film on the rigid scraper to enhance the hardness and wear resistance of the rigid scraper , Prolong the service life of the strong and rigid scraper, and reduce the cost of using the scraper. ...

Claims

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Application Information

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IPC IPC(8): B41F31/04
Inventor 张栋宋赴军简镇明
Owner KHAINAN YAYUAN ANTI TSOUNTERFEIT TECH RES INST
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