Microwave Food Container Oil-Resistant Coating

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Solution Overview

Problem

Microwave food containers, particularly those made of fibrous materials like paper products, face challenges with oil and grease penetration during storage and use, leading to staining and leakage, which existing fluorocarbon-based coatings aim to address but are undesirable due to environmental concerns and manufacturer discontinuation.

Innovation Solution

Incorporating oil-resistant areas treated with non-fluorocarbon substances within the microwave food container, combined with a microwave susceptor film, to prevent penetration by oils and greases without using PFAS or fluorocarbons, ensuring the container remains effective and environmentally friendly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fluorocarbon-containing substances are used to treat the fibrous material, then oil and grease penetration is prevented, but environmental safety and consumer acceptance deteriorate due to PFAS concerns

Engineering Contradiction:

Improveoil penetration resistanceVSAvoidenvironmental safety

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters of the grease-resistant coating by replacing fluorocarbon-containing substances with alternative substances that do not contain PFAS. This maintains the grease-resistant function while eliminating the harmful environmental factors associated with fluorocarbons.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent extracts and removes the harmful fluorocarbon-containing substances from the grease-resistant coating formulation, retaining only the beneficial grease-resistant properties through alternative chemical compositions that are environmentally safe.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If fluorocarbon-based coatings are applied to prevent oil penetration, then leakage is prevented, but manufacturer availability and continuity deteriorate as manufacturers discontinue these substances

Engineering Contradiction:

Improveleakage preventionVSAvoidcoating availability

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent changes the chemical composition of the grease-resistant coating to use non-fluorocarbon substances, ensuring long-term availability and continuity of the coating material as manufacturers discontinue fluorocarbon-based products.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent proactively transitions to alternative substances before fluorocarbon-based coatings become completely unavailable, ensuring continuous supply and preventing future disruptions in grease-resistant coating availability.

Inventive Principle:

Principle #10Preliminary action

3Object-affected harmful factors

If the fibrous material is used without oil-resistant treatment, then environmental safety is maintained, but oil and grease penetration occurs causing staining and leakage

Engineering Contradiction:

Improveenvironmental safetyVSAvoidpenetration resistance

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent creates a composite structure by combining fibrous material with grease-resistant coatings that are free from PFAS. This composite material maintains both the environmental safety of natural fibers and the oil penetration resistance of treated surfaces.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the surface properties of the fibrous material through application of alternative grease-resistant coatings, changing the chemical composition to achieve penetration resistance while maintaining environmental safety.

Inventive Principle:

Principle #35Parameter changes

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 effectively prevents oil and grease penetration into the fibrous material of microwave food containers, reducing staining and leakage while adhering to environmental safety standards, thus enhancing user experience and compliance with market demands.

Implementation Method 1

The microwave susceptor film for converting microwave energy generated by a microwave source, e.g., the microwave oven, to thermal energy

Methodology Applied

Scientific EffectMicrowave radiation conversion to thermal energy: Dielectric Heating

Implementation Method 2

The fibrous material can be treated with certain fluorocarbon (FC)-containing substances which penetrate and permeate the fibrous material. When applied to fibrous materials, such FC-containing substances are generally effective at repelling oil and oil-containing liquids.

Methodology Applied

Scientific EffectOil and grease repulsion: Hydrophobe

Data Source

PatentUS20230406598A1Microwave Food Container

Publication Date: 2023.12.21 INLINE PACKAGING LLC

AI summary

A microwave food container which includes one or more oil-resistant areas including an oil-resistant substance for preventing penetration of the microwave food container by liquids such as oils or grease. The microwave food container generally includes a top portion, bottom portion, and pair of side portions. A food item and optional oil-producing substance may be positioned on a microwave susceptor film including a microwave interactive material for applying heat from a microwave oven to cook the food item. One or more areas of the interior of the microwave food container will generally include oil-resistant areas treated with an oil-resistant substance not including fluorocarbons or PFA's to prevent penetration or bleed-through of various liquids during the cooking process.