Heat Scored Flexible Packaging for Controlled Opening

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Solution Overview

Problem

Conventional flexible packaging methods, such as laser scoring and perforating, are costly, inefficient, and can compromise the barrier characteristics of packaging materials, leading to uncontrolled tears and product leakage, limiting consumer access while maintaining package integrity.

Innovation Solution

A heat scoring method and system that uses a heated tool to create controlled score lines on flexible packaging materials, allowing for easy opening without compromising the package's barrier integrity, by applying heat and pressure to the film in specific shapes and locations during the manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If laser scoring is used to create controlled tear lines, then the package can be opened in a controlled manner, but the manufacturing cost increases and tooling becomes more expensive

Engineering Contradiction:

Improvecontrolled openingVSAvoidmanufacturing cost

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The patent replaces the mechanical laser scoring system with a thermal heating system. A heating element is pressed against the packaging material to create a score line through thermal energy, eliminating the need for expensive laser equipment and complex tooling while achieving the same controlled tear function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the energy delivery method from mechanical (laser) to thermal (heating element). By controlling temperature and pressure parameters during the heating process, the system creates controlled score lines that guide tearing without requiring the complex infrastructure of laser scoring systems.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If perforations are made in the film for easy tearing, then the package can be opened easily, but the barrier characteristics are compromised and product freshness is negatively affected

Engineering Contradiction:

Improveeasy tearingVSAvoidbarrier characteristics

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent creates a score line that segments the packaging material in a controlled manner. The heat score divides the film into sections that can tear along a predetermined path, providing easy opening while the intact film structure maintains barrier characteristics and product freshness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The heat score acts as an intermediary element between the intact film and the tear. It provides a controlled failure point that guides the tear along a desired path while the surrounding film remains intact, preserving the barrier properties of the packaging.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If tear strips or tapes are placed in the package to facilitate opening, then the package can be opened with a straight line tear, but contoured tears cannot be achieved

Engineering Contradiction:

Improvestraight line tearVSAvoidcontoured tear capability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent makes the score line dynamic by allowing it to conform to the shape of the packaging material. The heating element can be positioned and pressed to create score lines that follow contoured paths, enabling versatile tearing patterns adapted to different package geometries rather than being limited to straight lines.

Inventive Principle:

Principle #15Dynamics

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

Enables consumers to open packages easily while maintaining the sealing and barrier properties of the packaging, allowing for controlled tearing and re-closure, reducing costs and improving user experience.

Implementation Method 1

Methodology Applied

Scientific EffectHeat: Heating

Data Source

PatentUS10427851B2Package with heat score

Publication Date: 2019.10.01 STEELE MARK

AI summary

The present invention addresses certain problems facing flexible packages and the packaging industry. Embodiments of the present invention are directed to a method of heat scoring the film or material of the package in various shapes and locations to facilitate the consumer opening the package. Embodiments are also directed to a heat scoring device for delivering the heat score to the package material during the manufacturing process. Other embodiments are directed to a package having one or more heat scores for permitting a user to easily access the contents of a package while maintaining the integrity of the package.