Cookware Mechanical Decoration Without Intermediate Heat Treatment

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Solution Overview

Problem

Current cookware decoration methods fail to achieve desired aesthetic effects such as realistic and 'material' decorations under acceptable energy conditions while maintaining mechanical strength, anti-staining, and adhesion properties.

Innovation Solution

A process involving the application of a base heat-stable composition followed by a decorating composition on cookware surfaces, with a mechanical treatment to create decorations by removing or displacing parts of the decorative layer, and a subsequent heat treatment for densification, without intermediate heat treatment between the base and decorative layers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If mechanical treatment is applied to create realistic decorations by transferring pre-existing decor from a film, then aesthetic effect is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoiddecoration aesthetic effect

Core Design Contradiction:

Ease of manufactureVSShape

Solution Approach 1:

The patent replaces complex mechanical decoration transfer systems (film contact transfer, pad printing, screen printing) with a simplified mechanical treatment process using compressed air jets and rotating brushes that directly create material effects on the enamel surface, eliminating the need for pre-existing decor films and complex transfer mechanisms

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the decoration creation process from complex multi-step transfer methods and simplifies it to a single mechanical treatment step applied directly to the wet enamel layer, removing unnecessary intermediate films and transfer operations

Inventive Principle:

Principle #2Taking out (Extraction)

2Strength

If intermediate heat treatment is applied between base and decorative layers for densification, then coating strength is improved, but energy consumption increases

Engineering Contradiction:

Improvecoating mechanical strengthVSAvoidenergy consumption

Core Design Contradiction:

StrengthVSUse of energy by moving object

Solution Approach 1:

The patent merges the densification of the base layer and the decorative layer into a single final heat treatment step, eliminating the need for separate intermediate heat treatment between layers. The base layer is applied, the decorative layer is applied, and both are densified together in one heat treatment cycle at temperatures between 700-900°C

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The final heat treatment serves multiple functions simultaneously: it densifies both the base layer and the decorative layer, bonds them together, and achieves the required mechanical strength, adhesion, and anti-staining properties in a single operation

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If multiple heat treatment steps are used for densification, then adhesion properties are improved, but manufacturing time increases

Engineering Contradiction:

Improveadhesion propertiesVSAvoidmanufacturing cycle time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines multiple heat treatment functions into a single final heat treatment step that simultaneously achieves densification of both layers, ensures proper adhesion between the base layer and decorative layer, and provides the required anti-staining and mechanical strength properties, reducing the manufacturing cycle from multiple separate heat treatments to one continuous process

Inventive Principle:

Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This process achieves decorated cookware with enhanced mechanical strength, anti-staining, and adhesion properties while providing aesthetic effects like texture and color variations, maintaining performance under culinary use conditions.

Implementation Method 1

the base heat-stable composition being a sol-gel

Methodology Applied

Scientific EffectSol-gel: Sol

Implementation Method 2

a sol-gel composition

Methodology Applied

Scientific EffectHydrolysis: Hydrolysis

Implementation Method 3

an aqueous slip of enamel frit

Methodology Applied

Scientific EffectSintering: Sintering

Implementation Method 4

heat treatment for densification of the coated support

Methodology Applied

Scientific EffectDensification:

Implementation Method 5

a jet of compressed air on the surface of the decorative layer

Methodology Applied

Scientific EffectCompressed air:

Data Source

PatentEP3240639B1Method for decorating a kitchen item by mechanical treatment

Publication Date: 2020.01.08 SEB SA

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AI summary

The invention relates to a method for decorating a kitchen item by means of mechanical treatment in order to produce a decoration. The mechanical treatment involves removing and/or displacing part of a thermostable decorative composition by means of pressure and moving a tool or a compressed air jet over the surface of the decorative layer.