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Method for etching complex pattern on 3-D abnormal curved surface

A special-shaped curved surface and pattern technology, applied in the field of photochemical processing, can solve the problems that cannot be applied to three-dimensional special-shaped curved surface complex pattern corrosion processing, and can not solve the problem of proper overlay of photographic negatives, so as to achieve good production effect and easy implementation

Active Publication Date: 2009-07-29
NANJING CHENGUANG ART ENG CO LTD
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Problems solved by technology

[0004] However, photochemical processing is currently limited to forming processing patterns on planar or three-dimensional regular surfaces that can be developed into planar
For a long time, due to the inability to properly cover the photographic film on the surface of the workpiece with three-dimensional irregular surfaces, it cannot be applied to the corrosion processing of complex patterns on three-dimensional irregular surfaces.

Method used

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  • Method for etching complex pattern on 3-D abnormal curved surface
  • Method for etching complex pattern on 3-D abnormal curved surface

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Embodiment 1

[0019] This embodiment requires the method of corroding complex patterns on three-dimensional special-shaped curved surfaces figure 1 Etched out on the three-dimensional shaped surface shown figure 2 As shown in the complex pattern, the surface of the workpiece's heart-shaped cross-section curved cone cylinder constitutes a three-dimensional special-shaped surface.

[0020] In order to solve this difficult problem that cannot be solved by traditional photochemical processing technology, the applicant has taken three corresponding effective measures after trial and error: 1. In order to ensure the flexibility and ductility of the pattern, the film pattern is exposed twice by photography. The method of imaging on the photosensitive plastic film; 2. When the patterned plastic film is attached to the photosensitive adhesive, in order to facilitate adjustment and attachment, a layer of special grease is applied between the two, so as to play a certain role. Full of concave and ge...

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Abstract

The invention relates to a method for corroding complex patterns on a three-dimensional special-shaped curved surface, which belongs to the technical field of photochemical processing. The steps of the method are as follows: secondary photographic exposure; covering a layer of photosensitive glue and light-transmitting grease on the three-dimensional shaped curved surface to be corroded; attaching the photosensitive plastic film after exposure and imaging to the three-dimensional shaped curved surface; Superimpose the excess photosensitive plastic film; cut off the superimposed part, so that the photosensitive plastic film pattern on both sides of the slit can be connected smoothly; after exposure and development, make the three-dimensional special-shaped surface to be etched contact with the chemical etching solution. This properly solves the difficult problems in the current photochemical processing, and can form a clear, beautiful and continuous corrosion pattern on the three-dimensional irregular surface, and is easy to implement and has a good production effect.

Description

technical field [0001] The invention relates to a method for corroding complex patterns on a three-dimensional special-shaped curved surface, which belongs to the technical field of photochemical processing. Background technique [0002] Chemical processing is a special processing method that uses acid, alkali or salt solution to corrode and dissolve workpiece materials to obtain workpieces of desired shape, size or surface state. Chemical processing is mainly divided into three methods: chemical milling, photochemical processing and chemical surface treatment. [0003] Photochemical processing is a combination of photocopying and chemical etching, which can process precise and complex concave-convex patterns on the surface of the workpiece. The processing principle is to first coat a layer of photosensitive glue on both surfaces of the sheet-shaped workpiece; After being irradiated by light, it becomes a corrosion-resistant substance and forms a corresponding processing p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/00
Inventor 胡宁生撒世国胡鹏康庆生徐锦新张毅
Owner NANJING CHENGUANG ART ENG CO LTD
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