Scented Tissue Packaging Using Heat-Released Fragrance Microcapsules

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Solution Overview

Problem

The existing methods for producing scented tissue paper products are costly due to low yield of fragrance-containing microcapsules and result in significant production loss, and they fail to effectively provide aroma for moisturizing tissue paper, which has limited surface and fiber space for fragrance transfer.

Innovation Solution

A method involving shrink wrapping a tissue paper housing with fragrance-containing microcapsules applied to the inner surface of the housing box using a binder, where the film is exposed to hot air to detach the microcapsules, ensuring reliable aroma distribution to the tissue paper, even for moisturizing types, without the need for additional fragrance application processes or deodorizing equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fragrance-containing microcapsules are directly applied to tissue paper, then aroma transfer is improved, but production cost increases and production exchange loss increases

Engineering Contradiction:

Improvearoma transferVSAvoidproduction exchange efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The invention separates the fragrance application process from the tissue paper production process. Instead of applying microcapsules directly to tissue paper during production, the microcapsules are applied to the housing box interior surface, which then serves as a fragrance delivery system for the tissue paper inside.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The housing box interior surface acts as an intermediary carrier between the fragrance-containing microcapsules and the tissue paper. The microcapsules are fixed to the housing box, and the tissue paper subsequently contacts these microcapsules, enabling indirect fragrance transfer without requiring direct application during tissue paper production.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If fragrance-containing microcapsules are directly applied to tissue paper, then aroma transfer is improved, but production cost increases

Engineering Contradiction:

Improvearoma transferVSAvoidproduction cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The housing box serves as a disposable or single-use fragrance delivery system. The microcapsules are applied to the housing box, which is then discarded or reused a limited number of times, eliminating the need for expensive direct microcapsule application equipment on the tissue paper production line.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Productivity

If a film with slit is used to contain fragrance, then production cost is reduced, but aroma transfer is insufficient for moisturizing tissue paper

Engineering Contradiction:

Improveproduction costVSAvoidaroma transfer to moisturizing tissue paper

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The invention changes the delivery mechanism from passive fragrance volatilization through a film slit to active microcapsule release. The microcapsules are designed to rupture or release fragrance when contacted by the tissue paper, providing reliable aroma transfer even to moisturizing tissue paper with limited surface space.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention utilizes the phase transition or structural change of microcapsules upon contact with tissue paper moisture or mechanical stress. The microcapsules rupture or open, releasing the fragrance contents directly onto the tissue paper surface, ensuring effective aroma transfer regardless of the tissue paper's moisture content.

Inventive Principle:

Principle #36Phase transitions

4Productivity

If microcapsules are applied to housing box inner surface, then production loss is reduced and aroma transfer is improved, but additional process steps are required

Engineering Contradiction:

Improveproduction efficiencyVSAvoidprocess complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The invention combines the fragrance application process with the housing box manufacturing or assembly process. The microcapsules are applied to the housing box interior surface as part of the box preparation, integrating the fragrance delivery system into the existing packaging process without requiring separate dedicated equipment.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The housing box is prepared with fragrance-containing microcapsules in advance, before the tissue paper is placed inside. This preliminary action ensures that the fragrance delivery system is already in place when the tissue paper is inserted, eliminating the need for additional fragrance application steps during tissue paper production.

Inventive Principle:

Principle #10Preliminary action

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 method reduces production loss, enhances aroma transfer to tissue paper, including moisturizing types, while maintaining productivity and cost-effectiveness by directly applying microcapsules to the housing box, ensuring consistent fragrance delivery without physical stimulation that could lead to capsule collapse.

Implementation Method 1

causing the fragrance-containing microcapsules to be detached from the binder by heating the tissue paper housing at the time of the shrink wrapping

Methodology Applied

Scientific EffectMelting: Melting

Implementation Method 2

the film is exposed to hot air so as to be attached to the tissue paper housing

Methodology Applied

Scientific EffectThermal energy transfer: Heating

Implementation Method 3

performing shrink wrapping in which a tissue paper housing obtained by carrying fragrance-containing microcapsules on an inner surface of a housing box using a binder is covered with a shrink film and the film is exposed to hot air so as to be attached to the tissue paper housing

Methodology Applied

Scientific EffectThermal contraction: Thermal Contraction

Implementation Method 4

allowing a film provided with a slit, included in a typical housing box structure of a tissue paper housing, to contain a fragrance and providing the fragrance volatilized from the film provided with a slit for tissue paper in the housing box

Methodology Applied

Scientific EffectVolatilization: Evaporation

Data Source

PatentEP3112291B1Method of producing scented tissue paper product

Publication Date: 2018.11.28 DAIO PAPER CORP

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AI summary

[Problem] To provide a method of producing scented tissue paper. [Solution] The problem is solved by performing shrink wrapping in which a tissue paper housing 1 obtained by carrying fragrance-containing microcapsules 31 on an inner surface of a housing box using a binder 30 is covered with a shrink film 2 and the shrink film 2 is exposed to hot air W so as to be attached to the tissue paper housing 1, causing the fragrance-containing microcapsules 31 to be detached from the binder 30 by heating the tissue paper housing 1 at the time of the shrink wrapping, and providing the scent for plural sheets of tissue papers 20.