Marked Filter Paper for Cigarette Ignition Testing

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Solution Overview

Problem

The existing methods for testing the ignition propensity of cigarette paper face challenges in reliably identifying the rough and smooth sides of cellulose filter papers, leading to inconsistent test results and potential liability issues due to haptic-based orientation determination, which is time-consuming and prone to errors when using specialized apparatus.

Innovation Solution

Cellulose filter papers are marked with distinct markings that allow easy differentiation between the rough and smooth surfaces through haptic testing or visual inspection, ensuring correct orientation during testing without the need for specialized equipment, using methods such as watermarks, embossing, or printing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If haptic testing is used to determine the rough side of filter paper, then the method is simple and requires no specialized equipment, but the determination is time-consuming and prone to errors

Engineering Contradiction:

Improvesimplicity of methodVSAvoidtime for orientation determination

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The rough side of the filter paper is marked in advance during the manufacturing process using watermarks, embossing, or printing. This preliminary action eliminates the need for time-consuming haptic testing or specialized measurement equipment during the actual ignition propensity test, as the orientation can be immediately identified by visual inspection.

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If haptic testing is used to determine the rough side of filter paper, then no specialized apparatus is needed, but the results are inconsistent and lead to potential liability issues

Engineering Contradiction:

Improveequipment requirementsVSAvoidconsistency of test results

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical haptic testing method with visual detection of markings (watermarks, embossing, or printing). This substitution eliminates the subjectivity and inconsistency inherent in tactile assessment while maintaining simplicity and avoiding the need for complex specialized apparatus.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Loss of information

If the rough side must be determined before preconditioning, then the orientation can be identified, but the process becomes more complex and time-consuming

Engineering Contradiction:

Improveorientation informationVSAvoidtesting workflow efficiency

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

The markings indicating the rough side are applied during the filter paper manufacturing process, before the filter papers are used in testing. This allows the orientation information to be permanently associated with each filter paper, enabling quick visual identification at any stage without adding complexity to the preconditioning or testing workflow.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11013257B2Marked filter paper for use as test substrate in standardized methods for evaluation of the ignition propensity of cigarettes

Publication Date: 2021.05.25 AXAGARIUS

AI summary

The present invention relates to a cellulose filter paper for testing the ignition propensity of cigarette paper that is provided with a marking with which the rough surface of the filter paper can be distinguished from the smooth surface, and a method for its production, a method for testing the ignition propensity of cigarette paper, and a kit having a plurality of such filter papers or stacks of such filter papers.