Packaging Material Forming: Flame Treatment for Barrier Coatings

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Solution Overview

Problem

Existing packaging materials face inefficiencies in removing stray fibers that protrude through coating layers, creating channels for liquids to pass through, which can lead to issues with water resistance and grease barriers, and current methods are often costly and inefficient in material usage.

Innovation Solution

A method and system involving a flame treatment unit to apply localized heat to a fibrous base material to remove stray fibers, followed by applying a coating layer to create a smoother surface, using renewable and compostable polymers like PHA or PLA to form a barrier layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If a coating layer is applied to the base material without removing stray fibers first, then the coating process is simpler and faster, but the coating material is wasted and channels are formed allowing liquids to pass through

Engineering Contradiction:

Improvecoating material usageVSAvoidmanufacturing efficiency

Core Design Contradiction:

Loss of substanceVSProductivity

Solution Approach 1:

The patent applies preliminary action by removing stray fibers from the base material surface before applying the coating layer. This preliminary fiber removal prevents coating material waste and eliminates channels that would allow liquids to pass through, thereby improving both coating material efficiency and overall manufacturing effectiveness.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent extracts and removes stray fibers from the base material surface using a treatment unit before coating. This extraction of harmful elements (stray fibers) prevents them from creating channels in the coating layer, thus improving liquid resistance and reducing coating material consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If flame treatment is applied to remove stray fibers, then water resistance and grease barriers are enhanced, but the process complexity and energy consumption increase

Engineering Contradiction:

Improvewater resistanceVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies parameter changes by using controlled flame treatment parameters (temperature, duration, intensity) to selectively remove stray fibers without excessive energy consumption. The flame treatment parameters are optimized to achieve effective fiber removal and water resistance enhancement while minimizing energy input.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces mechanical fiber removal methods with thermal flame treatment. This substitution provides more effective and controlled fiber removal, enhancing water resistance and grease barrier properties while maintaining reasonable energy consumption through the localized and controlled nature of flame treatment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Loss of substance

If flame treatment is applied to remove stray fibers, then coating material usage is optimized, but the device complexity and process cost increase

Engineering Contradiction:

Improvecoating material usageVSAvoidprocess complexity

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical fiber removal systems with a flame treatment unit. This substitution simplifies the overall process by using a single, well-understood thermal treatment mechanism to achieve fiber removal, thereby reducing device complexity while optimizing coating material usage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses parameter changes in the flame treatment process (controlling temperature, exposure time, and flame intensity) to achieve effective fiber removal without requiring complex equipment. This approach maintains process simplicity while optimizing coating material consumption and enhancing water resistance.

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 process efficiently reduces and eliminates channels for liquids, enhances water resistance and grease barriers, and optimizes coating material usage, making the packaging materials more efficient and cost-effective.

Implementation Method 1

applying heat along at least a portion of the face with a treatment unit to at least partially remove the plurality of fiber portions

Methodology Applied

Scientific EffectHeat treatment: Heat Treatment

Implementation Method 2

applying localized heat to at least a portion of the coating layer along the surface of the initial coated material with a treatment unit to at least partially modify the coating layer

Methodology Applied

Scientific EffectThermal ablation: Ablation

Data Source

PatentUS12358017B2Method and system for forming a packaging material

Publication Date: 2025.07.15 GRAPHIC PACKAGING INTERNATIONAL LLC

AI summary

A method for forming a resultant material. The method can include obtaining a base material including a fibrous material with a plurality of fiber portions extending from a face of the base material. The method further can include treating at least the face of the base material, the treating at least the face including applying heat along at least a portion of the face with a treatment unit to at least partially remove the plurality of fiber portions extending from the face.