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Screen printing technique for polyolefin plastic products

A technology for screen printing and plastic products, which is applied in screen printing machines, exposure devices for photographic plate-making processes, printing, etc. It can solve the problems of high comprehensive printing cost, low solid content, low production efficiency, etc., and achieve a three-dimensional layering of patterns Strong, easy to scale production, good printing fastness effect

Inactive Publication Date: 2007-12-12
NINGBO BEIFA GRP CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

At the same time, the disclosed multi-color overprinting method also needs to be positioned separately on the screen printing frame of each color, and the printing of the next color must wait for the printing of the previous color to dry naturally.
[0005] The above-mentioned existing technologies all have the following defects: due to the solvent-based ink is extremely volatile, the solid content is low, and the permeability on the printing substrate is large, resulting in high overall printing costs; printing using solvent-based inks is ubiquitous. Serious defect that the friction becomes soft and easy to fall off
When performing multi-color overprinting, due to the need to position each color on the screen printing frame separately, the next color printing must wait for the previous color to dry naturally, resulting in easy color overlapping during multi-color overprinting, and the production efficiency is very low

Method used

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  • Screen printing technique for polyolefin plastic products

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Embodiment Construction

[0018] The following is a preferred embodiment of the present invention, a complete set of processes including silk screen plate making engineering, ink blending engineering and subsequent workpiece screen printing engineering. Among them, the screen printing process and the ink mixing process can be carried out separately or at the same time; the subsequent screen printing process of the workpiece is to implement high-quality and efficient multi-color overprinting on the polypropylene pen holder on the automatic five-color UV screen printing machine.

[0019] 1. Overview

[0020] UV is the abbreviation of Ultraviolet Rays in English, that is, ultraviolet light. Ultraviolet (UV) is invisible to the naked eye. It is a section of electromagnetic radiation other than visible violet light, with a wavelength in the range of 10-400nm. UV curing ink is an environmentally friendly ink developed rapidly in recent years. It adopts instant curing and drying method, and it does not conta...

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Abstract

The fine and highly effective polyolefin silk screening process comprises the silk screen making, oil paint modulation and working piece printing, features in the UV solidified oil paint, working piece silk screen painting composed of the surface flame treatment at the surface to be painted, silk screen painting, ultraviolet solidification treatment, with steady painting and ready for automatic production.

Description

technical field [0001] The invention belongs to the screen printing process of polyolefin plastic products. Background technique [0002] The most widely used organic plastics are polyolefin plastics, such as polyolefin, polypropylene, polyvinyl chloride, and polystyrene. Polyolefin plastic products are widely used in all walks of life and people's daily life. These plastic products usually need to print pictures and texts on their surface, but the biggest defect of polyolefin plastic is its poor surface adhesion. Generally, effective printing cannot be implemented without special treatment of the plastic surface, or without the use of special special inks. [0003] In the prior art, solvent-based inks are mainly used. Generally, the method of flame pretreatment before printing is used to increase its surface tension, thereby improving its surface adhesion; and then hand over to the next process for printing within 24 hours. When performing multi-color overprinting, it n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M1/30B41M1/12B41M1/14B41M7/00B41F15/34G03F7/20G03F7/09
Inventor 王象宏王平刘景春程贞民
Owner NINGBO BEIFA GRP CO LTD
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