Press Pad Functional Threads for Wood Grain Embossing
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Solution Overview
Problem
Existing press pads fail to reliably transfer pressing pressure to press plates with high relief portions, leading to uneven force distribution and incomplete impression of deep surface structures on press blanks, especially when replicating natural wood grain patterns.
Innovation Solution
A press pad with functional threads woven or applied in the warp and weft directions to increase thickness in specific portions, matching the press plate's relief structure, thereby enhancing resistance and ensuring complete impression of high portions into the press blank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a press plate with high relief portions is used to create deep surface structures, then the replication quality of natural wood grain patterns is improved, but the force distribution becomes uneven and the press plate escapement increases
Solution Approach 1:
The press pad incorporates functional threads with varying thicknesses distributed non-uniformly across the fabric. Thicker functional threads are positioned in specific regions to provide localized reinforcement and increased thickness where high relief portions of the press plate contact the pad. This local quality variation allows the press pad to compensate for uneven force distribution while maintaining overall flexibility and conformability to the press plate surface.
2Manufacturing precision
If the press blank material is softened to facilitate pressing, then the embossing depth is increased, but the material resistance during pressing varies significantly across the surface
Solution Approach 1:
The press pad utilizes functional threads with different thickness parameters to adapt to varying material resistance. The thicker functional threads provide additional structural support in regions where high embossing depths are required, compensating for the softened state of the press blank material. This parameter variation in thread thickness allows the press pad to maintain consistent contact pressure across the press plate surface despite significant variations in local material resistance.
3Ease of manufacture
If a uniform fabric thickness is used in the press pad, then the manufacturing is simplified, but the pressure distribution on the press plate becomes non-uniform when high relief portions are present
Solution Approach 1:
Rather than using uniform fabric thickness throughout, the press pad employs functional threads with varying thicknesses strategically positioned to match the press plate's relief structure. This local variation in thickness provides additional cushioning and pressure distribution in regions corresponding to high relief portions, while maintaining simpler construction methods for the overall pad assembly.
Data Source
AI summary
A press pad for a hydraulic heating press arrangement, the press pad including a fabric, wherein the fabric is formed by warp threads in a warp direction and weft threads in a weft direction, wherein the warp threads and the weft threads are woven together to form the fabric, and wherein functional threads run in the warp direction or in the weft direction and are connected with the fabric so that a thickness of the fabric in an effective portion of the functional threads differs from a thickness of the fabric outside of the effective portion of the functional threads.