Two-sided automatic-alignment intermittent thin film coating method

Abstract

The invention provides a two-sided automatic-alignment intermittent thin film coating method especially for coating two layers of film material on a thin film to be coated intermittently. The method comprises the following specific steps of: arranging a first film coating component, a to-be-coated film component and a second film coating component respectively at an upper position (5), a middle position (7) and a lower position (6); detecting a coating window (1) on the to-be-coated film component by using a color code sensor (2); when the right edge of the window is detected, pressing upper and lower transfer printing rollers (3) onto a middle to-be-coated film so as to obtain a composite film with certain length and width. Compared with the traditional multi-layer composite film preparation process, the method has the advantages of simple process flow, high alignment accuracy, easy positioning control, capability of realizing the intermittent composite film coating, convenience in batch production and the like.

Description

technical field [0001] The invention relates to the technical field of high-precision coating of coating film materials, in particular to a film double-sided automatic alignment intermittent coating method. Background technique [0002] With the rapid development of materials, chemical industry and electronic technology, membrane materials are used more and more widely, which also makes people put forward high requirements for the processing technology and technology of membrane materials. Under normal circumstances, the membrane materials used only have a certain characteristic, but in practical applications, especially in some high-tech industries (such as chemical industry, electric power, marine technology, seawater resource development technology, etc.), usually It is necessary to use a composite membrane material with two or more characteristics, that is, to coat two or more membrane materials on the membrane component to be coated (such as plastic film, cellophane, me...

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Problems solved by technology

However, this method uses a sheet-like coating film, which makes it difficult to absorb, transport and position control under negative pressure.

[0005] Document 2 "Composite Film Laminated Cloth and Its Manufacturing Method (Publication No.: CN1382584)" provides a simple and environmentally friendly production method, which can produce multi-layer film laminated cloth with diversified functions. Although the method can coat multiple layers of thin film materials on both sides of the base material, it is a continuous coating and cannot achieve intermittent coating.

[0006] Document 3 "Laminating machine with alignment lamination function (patent number: 200820047317.0)" provides a lamination machine with alignment lamination function. This lamination method can eliminate the gap between the corresponding lamination film materials. The alignment deviation caused by some reasons can achieve the purpose of high-precision lamination, but this method needs to position each film material, and then control the alignment by controlling the servo motor after centralized processing of various position signals. This not only requires very high accuracy, real-time, synchronization and error requirements for each positioning sensor, but it is also difficult to master the control of the servo motor, which increases the difficulty of alignment and makes the composite film material The production is more complicated, which is not conducive to practical application

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