Fragrance Fixative Treatment for Long-Lasting Scented Substrates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for providing fragrance to substrates, such as textiles and paper, suffer from inefficiencies in fragrance transfer and short-lasting olfactory effects, with significant fragrance loss during washing cycles and rinsing, leading to high costs and unacceptably strong initial scents when using higher concentrations.
Innovation Solution
A method involving the treatment of substrates with a fragrance-containing composition followed by a fixative compound, such as fructan, starch hydrolysate, or hydrophobically modified derivatives, to enhance fragrance adhesion and longevity, which can be applied before, during, or after the washing cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a higher concentration of fragrance is used in laundry compositions to compensate for losses during washing, then the desired high amount of fragrance adsorbed to textile is achieved, but the cost of the composition is noticeably increased and the initial smell of the laundry composition becomes unacceptably strong
Solution Approach 1:
The fragrance is encapsulated in a film or sheet form that controls its release timing. The fragrance remains enclosed during washing and is only released after the washing cycle completes, preventing premature release and allowing lower initial concentrations to be used effectively.
Solution Approach 2:
A film or sheet composed of water-soluble cellulose derivatives and/or polysaccharides acts as an intermediary carrier for the fragrance. This mediator protects the fragrance during washing, controls its release timing, and enables efficient transfer to the textile without requiring high initial concentrations.
2Quantity of substance
If fragrance is added through detergent composition during washing cycle, then fragrance is provided to laundry, but a large part of the added fragrance is lost via wash waters which largely reduces the efficiency
Solution Approach 1:
The fragrance-impregnated film or sheet serves as an intermediary that releases fragrance directly to the textile during the washing cycle. This controlled release mechanism prevents fragrance from being washed away, significantly reducing losses via wash waters while maintaining efficient fragrance transfer to the laundry.
Solution Approach 2:
The fragrance is incorporated into a flexible film or sheet structure made of water-soluble materials. This thin film form allows the fragrance to be delivered directly to the textile surface during washing, preventing loss in wash waters while enabling controlled and efficient fragrance transfer.
3Duration of action of stationary object
If fragrance is incorporated into film or sheet composed of water-soluble cellulose derivatives, then enhanced olfactory performances are provided for more than 5 days, but the films have to be prepared separately and added as a separate composition which may render dosing difficult
Solution Approach 1:
The fragrance-impregnated film or sheet combines multiple functions into a single component: it serves as both the fragrance carrier and the dosing mechanism. The film is pre-prepared with the exact fragrance concentration needed, eliminating separate dosing steps while providing long-lasting olfactory effects of more than 5 days.
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 achieves improved fragrance transfer and fixation, resulting in long-lasting olfactory effects that last for at least 14 days, reducing fragrance loss and allowing for lower concentrations in laundry compositions while maintaining desired scents.
Implementation Method 1
treating the substrate with a fixative compound or mixture of fixative compounds selected from the group consisting of: a fructan; a starch hydrolysate having a dextrose equivalent ranging from 1 to 50; a hydrophobically modified fructan; and a hydrophobically modified starch hydrolysate
Data Source
AI summary
The invention relates to a method for providing fragrance to a substrate, comprising the steps of: a) treating the substrate with a fragrance-containing composition; and b) treating the substrate with a fixative compound or mixture of fixative compounds selected from the group consisting of: a fructan; a starch hydrolysate having a dextrose equivalent ranging from 1 to 50; a hydrophobically modified fructan; and a hydrophobically modified starch hydrolysate, whereby step b) may be executed prior to, simultaneously with, and/or subsequent to the execution of step a). The invention further relates to fragrance-containing compositions and substrates.