DF Coater Head Multi-Layer Curtain Film Profile Regulation
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Solution Overview
Problem
Conventional multi-layer DF coater systems face complexity and clogging issues when trying to regulate the flow path and supply port opening area, making it difficult to maintain the profile of the curtain film.
Innovation Solution
A DF coater head with individually movable areas and a regulated nozzle gap system, featuring a rotating lip and adjustable bolts, allows for simple regulation of the curtain film profile without altering the flow path or supply port size, using a multi-layer system with elongated chambers and nozzles and a transport mechanism for easy adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the flow path within chambers is structurally modified or the feed orifice opening area is changed to regulate curtain film profile, then the curtain film profile can be controlled, but the design becomes complicated and the flow path may become clogged with dirt
Solution Approach 1:
The coater head is divided into multiple individual head sections, each with its own chamber and nozzle area. This segmentation allows independent regulation of each section without affecting others, simplifying the overall design while maintaining precise control over the curtain film profile for multi-layer coating applications
Solution Approach 2:
The invention introduces adjustable gap mechanisms between the chamber and nozzle area that allow dynamic regulation of the curtain film profile. Instead of fixed structural modifications, the system enables flexible adjustment of the gap dimension to control coating thickness and profile, preventing clogging while maintaining precision
2Manufacturing precision
If the flow path is altered by providing a chamfer on the leading edge of a regulating pin to regulate curtain film profile, then the profile can be controlled, but the design becomes complicated
Solution Approach 1:
The invention regulates the curtain film profile by changing the gap parameter between the chamber and nozzle area, rather than modifying the flow path geometry with chamfers. This parameter-based approach simplifies the regulating mechanism while achieving precise control over coating thickness and curtain film shape
3Ease of operation
If individual DF coater head sections are made movable individually via a transport component, then the gap of the nozzle area can be regulated, but the device complexity increases
Solution Approach 1:
The coater head is divided into multiple individual head sections, each with its own chamber and nozzle area. This segmentation allows independent regulation of each section without affecting others, simplifying the overall design while maintaining precise control over the curtain film profile for multi-layer coating applications
Solution Approach 2:
The invention introduces adjustable gap mechanisms between the chamber and nozzle area that allow dynamic regulation of the curtain film profile. Instead of fixed structural modifications, the system enables flexible adjustment of the gap dimension to control coating thickness and profile, preventing clogging while maintaining precision
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A DF coater head (1) is equipped with several chambers (23) to which a coating color (W) is supplied, and from which the coating color (W) flows out of each of these chambers (23) via a nozzle area (33) so that the flowed coating color (W) forms the shape of a curtain film (T). The design is such that individual DF coater head sections (2, 3, 4) containing a chamber (23) and a nozzle area (33) are provided as a multi-layer system, and the gap of the nozzle area (33) is adjustable for each of these individual DF coater head sections (2, 3, 4). This design allows the profile of the curtain film (T) to be adjusted for each individual DF coater head section (2, 3, 4) of the multi-layer DF coater head (1).