Integrated Sheet-fed Offset Printing Press with Inline Lamination
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Solution Overview
Problem
Conventional methods for laminating printed paper sheets with a film require significant time, labor, and space, as they necessitate the use of separate printing and laminating machines, leading to inefficiencies and resource constraints.
Innovation Solution
A sheet-fed offset printing press is designed with integrated printing and laminating capabilities, featuring a laminate roller and an overlap cylinder that allows for in-line printing and lamination by overlapping and synchronizing the transport speeds of sheets to apply a film efficiently, reducing the need for separate machines and space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate printing press and laminating machine are used, then printing and lamination functions are available, but installation space and human resources increase
Solution Approach 1:
The patent combines the printing press and laminating machine into a single integrated device. The printing unit includes a plate cylinder, ink supply unit, and impression cylinder, while the laminating unit includes a laminate roller with a film supply unit. Both functions share a common sheet transport path and control system, eliminating the need for separate machines and reducing installation space.
Solution Approach 2:
The printing press is designed to perform multiple functions: printing on sheets and laminating the printed sheets with a film. The sheet transport system and control mechanism serve both printing and lamination operations, allowing a single device to replace multiple specialized machines.
2Adaptability or versatility
If separate printing press and laminating machine are used, then printing and lamination functions are available, but time and labor requirements increase
Solution Approach 1:
The integrated device enables continuous operation where sheets are printed and then immediately laminated without interruption. The sheet transport system maintains continuous motion through both the printing and lamination units, eliminating the need to stop, transfer sheets between machines, and restart operations.
Solution Approach 2:
By combining printing and lamination in one device with a shared transport path, the patent eliminates the time and labor required to manually transfer sheets between separate machines. The control system coordinates both operations simultaneously, reducing overall processing time.
3Ease of manufacture
If conventional lamination method is used with sheet feeder, then paper sheets can be laminated with film, but complex device configuration and space requirements increase
Solution Approach 1:
The patent integrates the lamination function directly into the printing press structure. The laminate roller is positioned downstream of the impression cylinder, and both units share the same sheet transport path. This eliminates the need for a separate sheet feeder and complex transfer mechanisms between independent machines.
Solution Approach 2:
The sheet transport system serves dual purposes: conveying sheets through the printing unit and then through the laminating unit. The control system manages both operations, reducing the need for separate control mechanisms and simplifying the overall device configuration.
Data Source
AI summary
Described is a sheet-fed offset printing press including: a printing unit 20 printing on paper sheets 1; and laminate unit 40 for applying lamination to the paper sheets 1 printed by the printing unit 20, the lamination unit 40 being provided downstream of the printing unit 20 in a transport direction of the paper sheets 1.