Offset Printing Blanket with Multi-Layer Silicon Resin
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Solution Overview
Problem
The existing blankets for offset printing face challenges in reducing the swelling ratio of the surface printing layer due to ink and solvents, leading to increased process waiting time and reduced process margin, which affects the quality and efficiency of the printing process.
Innovation Solution
A blanket for offset printing is designed with at least two surface printing layers made of silicon-based resin, where each layer has different hardness values, fluorine content, or silicon oil content, reducing the swelling ratio and improving process efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single surface printing layer is used, then the structure is simple, but the swelling ratio is high and process waiting time increases
Solution Approach 1:
The surface printing layer is divided into multiple layers (first surface printing layer and second surface printing layer) with different material compositions. The first layer uses silicon resin with 10-20 parts silicon oil to control swelling, while the second layer uses silicon resin with 3-7 parts silicon oil for optimal printing performance. This segmentation allows each layer to perform its specific function, reducing overall swelling ratio and process waiting time.
Solution Approach 2:
Different regions of the surface printing layer have different silicon oil content to achieve different local properties. The first surface printing layer has higher silicon oil content (10-20 parts) for swelling control, while the second surface printing layer has lower silicon oil content (3-7 parts) for printing quality. This local quality differentiation resolves the contradiction between structural simplicity and process efficiency.
2Ease of manufacture
If uniform silicon-based resin is used throughout, then manufacturing is simple, but printing quality and swelling control are insufficient
Solution Approach 1:
The blanket uses a composite structure with two different silicon-based resin formulations. The first surface printing layer contains silicon resin and 10-20 parts silicon oil per 100 parts resin, while the second surface printing layer contains silicon resin and 3-7 parts silicon oil per 100 parts resin. This composite material approach maintains manufacturing simplicity through systematic material selection while achieving superior printing quality and swelling control.
3Manufacturing precision
If high silicon oil content is used, then printing quality improves, but swelling ratio increases and process time increases
Solution Approach 1:
The printing function is segmented into two layers with different silicon oil content. The first layer (10-20 parts silicon oil) handles swelling control with moderate printing quality, while the second layer (3-7 parts silicon oil) provides high printing quality with minimal swelling. This segmentation allows the system to achieve both high printing quality and reduced process waiting time simultaneously.
Solution Approach 2:
Different silicon oil content is applied locally in different layers. The first surface printing layer has higher silicon oil content for swelling management, while the second surface printing layer has optimized lower silicon oil content for high-quality printing with reduced swelling. This local quality approach resolves the contradiction between printing quality and process time.
Data Source
AI summary
The present invention relates to a blanket for offset printing and a manufacturing method thereof. The blanket for offset printing according to an exemplary embodiment of the present invention comprises a cushion layer, a support layer, and at least two surface printing layers, wherein the at least two surface printing layers comprise a silicon-based resin in which at least one of a hardness value, a fluorine group content value, and a silicon oil content value is different. The blanket for offset printing according to the exemplary embodiment of the present invention comprises the surface printing layer formed in at least two layers to prevent the surface printing layer from being swollen due to ink, thereby reducing a process waiting time and improving a process margin.