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Manufacturing method for printing rotary screen

A technology for printing a rotary screen and a production method, which is applied in the directions of printing and printing plate preparation, and can solve the problems of low tensile strength of the rotary screen, short service life of the rotary screen, and low opening rate of the rotary screen.

Inactive Publication Date: 2012-08-01
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The printing rotary screens prepared by these two methods in China mainly include 60-mesh [Sun Juncheng, Wei Fubin, Zhang Guangde, Zhang Peihai and Su Yao, 60-mesh printing nickel screen, patent announcement number: CN 201442376U], 70-mesh [Sun Juncheng, Wei Fubin, Zhang Guangde, Zhang Peihai and Su Yao, 70 mesh printed nickel screen, patent announcement number: CN 201442373U], 80 mesh [Sun Juncheng, Wei Fubin, Zhang Guangde, Zhang Peihai and Su Yao, 80 mesh printed nickel mesh, patent announcement number: CN 201442374U], 105 mesh [Sun Juncheng, Wei Fubin, Zhang Guangde, Zhang Peihai and Su Yao, 105 mesh printing nickel mesh, patent announcement number: CN 201442375U] The opening rate is relatively low, generally below 30% [Zhou Jiaxiang, printing nickel mesh technology and product innovation] , due to the electroformed nickel mesh, the overall tensile strength of the rotary mesh is not very high, resulting in a short service life of the rotary mesh

Method used

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  • Manufacturing method for printing rotary screen
  • Manufacturing method for printing rotary screen
  • Manufacturing method for printing rotary screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare 60 purpose circular screens, the method is as follows:

[0032] Stainless steel microwires with a diameter of 30 microns are wound on the PVC cylinder in the warp and weft direction at an interval of 390 microns to form a square grid. After chemical degreasing, hot and cold water washing, they are placed in the plating tank for nickel plating. The thickness of the coating Take it out when it reaches 60 microns, wash it with water, and take it off the net. The opening rate of the circular net made in this way is 40.7%, which is far greater than the 12-14% of the 60 mesh prepared by the existing technology.

[0033] 1. Chemical degreasing: The bath composition and working conditions are as follows:

[0034]

[0035] 2. Hot and cold water washing: first rinse with hot water (40-50°C) to prevent residual degreasing fluid on the grid surface, and then rinse with cold water (room temperature).

[0036] 3. Plating solution formula and process conditions:

[0037] ...

Embodiment 2

[0042] Prepare a 165-purpose circular screen, the method is as follows:

[0043] Copper alloy microwires (brass alloy microwires) with a diameter of 30 microns are wound on the PVC cylinder in a warp and weft manner at an interval of 123 microns to form a square grid. After chemical degreasing, they are washed with hot and cold water, and then Pickling removes the oxide film produced on the surface of the copper alloy, puts it into the plating tank for electroplating nickel, takes it out when the coating reaches 22 microns, washes it with water, and takes off the mesh. The opening rate of the rotary mesh is 27%, which is greater than that of the existing technology 19% of 165ED.

[0044] 1. Chemical degreasing: The bath composition and working conditions are as follows:

[0045]

[0046] 2. Pickling formula and working conditions:

[0047]

[0048] 3. Washing in hot and cold water: Same as Example 1.

[0049] 4. Plating solution formula and process conditions:

[005...

Embodiment 3

[0055] Prepare 60 mesh circular screens, the specific method is as follows:

[0056] After the nylon wire with a diameter of 30 microns is metallized by magnetron sputtering, it is wound on the PVC cylinder in the way of warp and weft at an interval of 390 microns to form a square grid. After chemical degreasing, hot and cold water washing Put it in the plating tank for electroplating nickel, take it out when the thickness of the coating reaches 60 microns, wash it with water, and take it off the screen. The opening rate of the circular screen made in this way is 40.7%, which is far greater than the 12-14% of the 60-mesh prepared by the existing technology. .

[0057] 1. Chemical degreasing: same as Example 1.

[0058] 2. Washing in hot and cold water: Same as Example 1.

[0059] 3. Electroplating formula and process: same as example 1.

[0060] 4. Washing

[0061] 5. Take off the net, dry and cut.

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PUM

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Abstract

A manufacturing method for a rotary printing screen comprises the steps as follows: 1, metal microfilaments or metallized nonmetal fibers are wound around on a roll at intervals in the warp and weft directions to form a metal microfilament or nonmetal fiber rotary screen; on the circumferential surface of the roll, one or more filaments are wound to form a framework in the weft direction, another one or more filaments are wound to form a framework in the warp direction, and the sequences of weaving the frameworks in the warp and weft directions can be interchanged; the frameworks in the warp and weft directions cannot in interpenetration and form a non-weaved printing rotary screen; or the frameworks in the warp and weft directions incline in the weft direction and are sequentially intertwined to and fro so as to form a crossed mesh shape; 2, the metal microfilament rotary screen or the nonmetal fiber rotary screen is treated preliminarily; and 3, the electroplating or the chemical plating, the water washing, the mesh separating, the drying and the cutting are conducted as required. The frameworks have high tensile strength and good toughness, thereby avoiding easy breakage. The percentage of opening is high, and through the use of the nonmetal fibers, the cost can be lowered. The rotary screen has a large mesh size and high high permeability. The printing rotary screen shaped like double loudspeakers is plated once through the method while twice in the prior art, therefore, the method has the advantages that the process is saved.

Description

technical field [0001] The invention belongs to the technical field of electroplating, in particular to a method for making a printing cylinder. Specifically, metal or non-metal printing cylinders are prepared by non-woven and non-stamping methods. Background technique [0002] At present, the printing circular screen mostly adopts the electroforming method. After electroforming on the mandrel, it is taken off from the mandrel for secondary plating to form a cylindrical seamless nickel screen. This method of netting must first manufacture the mandrel. Usually, the methods of making the mandrel include (1) extrusion method, that is, mechanical extrusion method with steel core male (female) mold; (2) laser method, that is, laser punching ( Melting) hole. According to the electroplating process of the copper surface of the core mold, the electroplating process can be divided into: chrome-plated mesh process (that is, the Chinese method). Someone proposed an improved printed n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41C1/14
Inventor 孙杰夏祥华张兴伟
Owner SHENYANG LIGONG UNIV
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