Composite Pan Handle Coating for Heat-Resistant Grip

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Solution Overview

Problem

Existing pan handles face issues with excessive heating, complex and costly assembly, and durability problems due to insufficient thermal insulation and high material costs, particularly with steel, wood-coated, and silicone-based solutions.

Innovation Solution

A pan handle design featuring a thin sheet metal core enclosed by heat-resistant reinforcement half-bodies made of an inexpensive material, coated with a clear and transparent silicone resin sheath for thermal insulation and aesthetic appeal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a steel tube handle is used, then the handle provides structural strength, but the handle becomes excessively heated during cooking

Engineering Contradiction:

Improvehandle structural strengthVSAvoidhandle temperature

Core Design Contradiction:

StrengthVSTemperature

Solution Approach 1:

The patent applies composite materials by combining a metal core (for strength) with a silicone resin coating (for thermal insulation). This composite structure allows the handle to maintain structural integrity while preventing excessive heat transfer to the user's hand.

Inventive Principle:

Principle #40Composite materials

2Temperature

If thermally insulating means are added between pan body and handle, then handle heating is reduced, but assembly becomes more complex and expensive

Engineering Contradiction:

Improvehandle temperatureVSAvoidassembly complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The patent merges the thermal insulation function with the handle coating itself. The silicone resin coating serves dual purposes: providing thermal insulation and forming the outer protective layer, eliminating the need for separate insulating components and simplifying assembly.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The composite structure of metal core with silicone resin coating integrates thermal insulation within the handle itself, avoiding the need for additional insulating components and reducing assembly complexity.

Inventive Principle:

Principle #40Composite materials

3Temperature

If wood coating is applied on metal core, then thermal insulation is provided, but the coating is destroyed by heat source and cleaning operations over time

Engineering Contradiction:

Improvethermal insulationVSAvoidcoating durability

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent changes the material parameter from wood to silicone resin, which has superior resistance to high temperatures, cleaning chemicals, and mechanical wear. This material substitution maintains thermal insulation while dramatically improving durability and reliability.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If synthetic material coating is applied by overmolding, then thermal insulation and durability are improved, but the manufacturing process becomes slow, expensive and complex

Engineering Contradiction:

Improvehandle durabilityVSAvoidmanufacturing speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent uses a thinner, more cost-effective silicone resin coating applied through a simplified process. While the coating provides adequate thermal insulation and durability, the reduced material thickness and simplified application method significantly decrease manufacturing time and cost.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

5Reliability

If silicone resin handle is made by injection molding, then thermal insulation and durability are achieved, but the cost becomes very high

Engineering Contradiction:

Improvehandle durabilityVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent applies a partial coating approach rather than forming the entire handle from expensive silicone resin. The metal core provides the primary structural framework, while the silicone resin coating provides thermal insulation and durability where most needed, significantly reducing material costs.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The composite structure combines inexpensive metal core material with a thinner layer of silicone resin coating, achieving the desired durability and thermal insulation properties at a lower overall cost than a fully silicone resin handle.

Inventive Principle:

Principle #40Composite materials

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

The solution provides a lightweight, cost-effective, and thermally resistant pan handle with improved durability and tactile grip, while allowing for branding on exposed surfaces, overcoming the limitations of previous handle designs.

Implementation Method 1

coated by a coating sheath made of a silicone resin

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP1977671B1Handle for a pan or a similar kitchen vessel

Publication Date: 2014.01.15 BALLARINI PAOLO & FIGLI SPA

Figure 1~2
Figure 3
Figure 4

AI summary

A handle (2) for a pan (1) or a similar kitchen vessel comprises a handle supporting core (3) integral with the pan (1) body and combined by two reinforcement half-bodies (7a,7b) made of a heat resistant material, the pan handle (2) including reinforcement half bodies (7) being coated by a silicone resin coating sheath (11).