Textured Coffee Powder Pressing Surface to Prevent Adhesion

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Solution Overview

Problem

Existing molding tools for pressing powder materials, such as coffee powder, face the issue of powder residues adhering to the pressing surface, leading to inconsistencies in the molded bodies and potential interference in subsequent pressing operations.

Innovation Solution

A molding tool with a concave, dome-shaped pressing surface featuring an extensive non-stick texture composed of local recess structures, each with a depth of 0.04 mm to 0.2 mm, is introduced to prevent powder material from adhering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a smooth pressing surface is used, then the molded body surface quality is improved, but powder material adheres to the pressing surface causing inconsistencies in molded bodies

Engineering Contradiction:

Improvemolded body consistencyVSAvoidpowder adhesion

Core Design Contradiction:

Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The pressing surface is given a dual nature: a smooth outer region for contact with the molded body and a textured inner region with recess structures for preventing powder adhesion. This local differentiation allows each zone to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The pressing surface is segmented into functionally distinct zones: a smooth outer region and a textured inner region with multiplicity of recess structures. This segmentation allows the surface to simultaneously provide both adhesion prevention and quality molding contact surfaces.

Inventive Principle:

Principle #1Segmentation

2Force

If powder material adheres to the pressing surface, then the pressing force is distributed evenly, but the adhering powder does not become part of the molded body causing volume and weight deviations

Engineering Contradiction:

Improvepressing force distributionVSAvoidmolded body volume and weight accuracy

Core Design Contradiction:

ForceVSManufacturing precision

Solution Approach 1:

The pressing surface incorporates a porous-like textured structure with multiplicity of recesses that trap powder material during pressing. This textured region acts as a reservoir that prevents powder from adhering to the smooth molding surface, ensuring accurate volume and weight of the final molded body.

Inventive Principle:

Principle #31Porous materials

3Object-generated harmful factors

If a textured pressing surface is used to prevent adhesion, then powder material does not adhere, but the surface area available for molding is reduced

Engineering Contradiction:

Improvepowder adhesion preventionVSAvoideffective molding surface area

Core Design Contradiction:

Object-generated harmful factorsVSArea of stationary object

Solution Approach 1:

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250120426A1Molding tool

Publication Date: 2025.04.17 RYCHIGER

AI summary

A molding tool for use in pressing operations for pressing powder material, in particular coffee powder, includes a concave, in particular dome-shaped, pressing surface. On the pressing surface there is an extensive non-stick texture for preventing powder material, in particular coffee powder, from adhering. The non-stick texture includes a multiplicity of local recess structures, wherein the recess structures each have a depth of 0.04 mm to 0.2 mm, in particular a depth of 0.08 mm to 0.14 mm. The non-stick texture prevents powder material from adhering during and after a pressing operation, even in the case of powder materials containing oil, e.g. coffee powder. It also prevents such adhering for different types of coffee and in pressing operations in which high pressures arise.