Microwaveable Pouch Laser Perforations Venting

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Solution Overview

Problem

Existing microwaveable food packaging insufficiently addresses the need for proper venting, leading to potential scalding and improper cooking due to inadequate airflow and risk of food leakage during microwave cooking.

Innovation Solution

The introduction of small, laser-made perforations on a plastic pouch, arranged in a strip pattern on opposite sides of the pouch, allowing for uniform venting without requiring the user to open the package, thereby preventing food leakage and ensuring safer cooking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the pouch is completely sealed during microwave cooking, then food containment is improved, but heat buildup and pressure increase leading to scalding risk and improper cooking

Engineering Contradiction:

Improvefood containmentVSAvoidscalding risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The pouch incorporates laser-made perforations that create a porous structure in the plastic material. These perforations allow steam and heat to escape during microwave cooking while maintaining food containment, thus resolving the contradiction between sealing integrity and heat/pressure management.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The venting function is segmented from the main pouch body through discrete perforations. Instead of a single large opening or complete sealing, multiple small perforations are distributed across the pouch surface, enabling controlled venting while maintaining overall structural integrity and food containment.

Inventive Principle:

Principle #1Segmentation

2Object-affected harmful factors

If a clip is attached to the pouch to allow venting, then heat release is improved, but user error may cause improper attachment and food leakage

Engineering Contradiction:

Improveheat buildupVSAvoidventing operation

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The pouch is designed to be self-venting through pre-formed laser perforations that automatically allow steam escape during cooking. No user action is required to create or activate venting openings, eliminating the risk of improper clip attachment while maintaining effective heat and pressure management.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The venting perforations are created during the manufacturing process using laser technology, before the product reaches the consumer. This preliminary action ensures that the venting function is already in place and requires no user intervention during cooking, thereby eliminating operational errors.

Inventive Principle:

Principle #10Preliminary action

3Object-affected harmful factors

If large openings are made in the pouch for venting, then steam escape is improved, but food leakage and aesthetic appearance deteriorate

Engineering Contradiction:

Improvesteam buildupVSAvoidfood leakage

Core Design Contradiction:

Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The pouch utilizes a porous structure created by numerous small laser perforations rather than large openings. This porous configuration allows steam to escape effectively while the small size and distribution of perforations prevent food particles from leaking out, thus resolving the contradiction between steam venting and food containment.

Inventive Principle:

Principle #31Porous 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

This solution provides improved airflow and reduces the risk of scalding and improper cooking by allowing for more uniform heat distribution and containment of food within the package during microwave cooking.

Implementation Method 1

very small perforations made by a laser on portions of a plastic pouch

Methodology Applied

Scientific EffectLaser ablation: Laser Ablation

Implementation Method 2

The present invention relates to microwaveable food packaging that vents while cooking in a microwave oven

Methodology Applied

Scientific EffectDielectric heating: Dielectric Heating

Data Source

PatentUS8112974B1Microwaveable food package

Publication Date: 2012.02.14 YARHI ROBERT E

AI summary

A microwavable food package is disclosed, comprising a packaging sheet including first and second column of apertures, the apertures between 100 microns and 800 microns in diameter; and a central seal, the central seal joining a first edge of the packaging sheet to a second edge of the packaging sheet, the central seal running longitudinally along the length of the food package, wherein the first column of apertures is on one side of the central seal and the second column of apertures is on the other side of the central seal.