Fragrance printed on substrate

Abstract

This disclosure relates to compositions for the delivery of fragrances. The composition comprises a substrate and a fragrance emulsion printed on the surface of the substrate and dried, wherein the fragrance emulsion comprises (i) a fragrance, (ii) a carrier comprising modified starch and disaccharides and / or disaccharide alcohols, and optionally (iii) a retention aid. This disclosure also relates to methods for producing such compositions. This disclosure also relates to consumer products or consumer packaging containing such compositions.

Description

Technical Field

[0001] The present disclosure relates to a substrate having an aroma emulsion printed and dried on its surface. The present disclosure also relates to a method of producing such a printed and dried substrate. The present disclosure also relates to a consumer product or consumer package comprising such a printed and dried substrate.

Background Art

[0002] Sustained and controlled release of flavors and / or fragrances from substrates is a trend in the aroma delivery industry. Conventionally, substrates are treated with aroma oils by spraying, coating, or dipping. Alternatively, fibers are treated with aroma oils prior to spinning. However, the given aroma effect often does not last long.

[0003] Furthermore, the combination of an aroma with certain active ingredients such as surfactants may result in insufficient retention of the aroma. Microencapsulation of aroma oils can provide protection for the aroma, but microencapsulation can be costly and may involve additional processes.

[0004] Therefore, there is a need for an effective, cost-efficient, and sustainable technology for controlled release of flavors and / or fragrances from substrates that protects the flavors and / or fragrances and releases the flavors and / or fragrances under predetermined conditions.

Summary of the Invention

Means for Solving the Problems

[0005] The present disclosure provides a composition for the delivery of an aroma (e.g., a flavor and / or a fragrance). The composition comprises a substrate and an aroma emulsion printed and dried on the surface of the substrate, wherein the aroma emulsion comprises (i) an aroma, (ii) a carrier comprising modified starch and a disaccharide and / or a disaccharide alcohol, and optionally (iii) a retention aid.

[0006] To improve understanding of the concepts presented herein, embodiments are illustrated in the accompanying drawings. [Brief explanation of the drawing]

[0007] [Figure 1] The following are examples of various conditions under which fragrances printed on a substrate can be released. Printed fragrances can be used in closed-environment applications to provide a stable supply of fragrance to the headspace through slow diffusion. Alternatively, the fragrance can be released through repeated activation by rubbing, sudden burst release by adding water, controlled release by heating, or activation by peeling off the protective layer. Furthermore, the fragrance can be released through various combinations of these methods.

[0008] [Figure 2A-2B] The image illustrates a pattern of printed emulsion dots on the surface of a substrate. Two different emulsions can be printed side-by-side on a divided portion of the substrate surface covering a large area (Figure 2A), or in alternating rows (Figure 2B). The fragrances in each dried emulsion may be released simultaneously in response to the same trigger (e.g., water), or individually in response to different triggers.

[0009] [Figure 3] This figure shows the fragrance retention rate under ambient conditions of a fragrance emulsion printed and dried on a substrate sheet, compared to untreated fragrance oil pipetted onto the same substrate sheet. In Figure 3, "FR" stands for fragrance, "Print" stands for printed and dried fragrance emulsion, and "Neat Oil" stands for untreated fragrance oil.

[0010] [Figure 4]This shows the average fragrance retention rate in newly prepared printed samples and printed samples after 8 weeks, with dot sizes ranging from 10% to 70%. Dot size (%) is a printer setting that adjusts the percentage of voltage applied to control the nozzle opening. 100% means the nozzle is fully open. The dot sizes, in increasing order, are: 10% < 20% < 40% < 70%. A 10% dot size corresponds to 0.256 mg dot wet weight, a 20% dot size to 0.319 mg dot wet weight, a 40% dot size to 0.627 mg dot wet weight, and a 70% dot size to 1.061 mg dot wet weight. In Figure 4, "fresh" refers to newly prepared, printed, and dried fragrance emulsions, and "8 weeks" refers to printed, and dried fragrance emulsions stored for 8 weeks.

[0011] [Figure 5A-5B] The fragrance retention rates of individual fragrance components (p1-p26) in the printed fragrance emulsion (Figure 5A) under ambient conditions are shown in comparison to the unadulterated fragrance oil pipetted onto the substrate (Figure 5B).

[0012] [Figure 6A-6B] The sensory evaluation of printed fragrance emulsion samples before (Figure 6A) and after (Figure 6B) the abrasion test, compared to untreated fragrance oil samples, is shown. In Figures 6A and 6B, "printed sticker" refers to a sticker substrate on which the fragrance emulsion has been printed and dried, and "neat oil sticker" refers to a sticker substrate on which untreated fragrance oil has been pipetteed. [Modes for carrying out the invention]

[0013] The above general description and the following detailed description are illustrative and descriptive only and do not limit the invention as defined in the attached claims. Other features and benefits of one or more embodiments will become apparent from the following detailed description and claims.

[0014] As used herein, the terms “including,” “including,” “listed,” “included,” “have,” “have,” “contains,” “contains,” or any other variation thereof are intended to encompass non-exclusive inclusion. For example, a process, method, article, or apparatus containing a list of elements is not necessarily limited to these elements alone, and may include other elements not expressly enumerated or inherently present in such process, method, article, or apparatus. Furthermore, unless expressly stated otherwise, “or” means inclusive “or” and not exclusive “or.” For example, condition A or B is satisfied by any one of the following: A is true (or exists) and B is false (or does not exist), A is false (or does not exist) and B is true (or exists), and both A and B are true (or exist).

[0015] Furthermore, the use of "a" or "an" is used to describe the elements and components described herein. This is done solely for convenience and to give a general sense of the scope of the invention. This description should be interpreted as including one or at least one, and the singular also includes the plural unless it is clear that otherwise.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in which the invention pertains. In case of any conflict, this specification shall prevail, including the definitions. Similar or equivalent methods and materials as those described herein may be used in the execution or testing of embodiments of the invention, but suitable methods and materials are described below. Furthermore, the materials, methods and examples are illustrative and not intended to be limiting.

[0017] Where a quantity, concentration, or other value or parameter is given as a range, preferred range, or preferred upper and / or preferred lower limit, this should be understood to individually disclose all ranges formed by any pair of any upper limit or preferred value and any lower limit or preferred value, regardless of whether the ranges are disclosed separately. Where a range of a number is described herein, unless otherwise specified, that range shall include its endpoints, as well as all integers and fractions within that range. For example, where the range “1 to 10” is described, this described range should be interpreted to include ranges such as “1 to 8”, “3 to 10”, “2 to 7”, “1.5 to 6”, “3.4 to 7.8”, “1 to 2 and 7 to 10”, “2 to 4 and 6 to 9”, “1 to 3.6 and 7.2 to 8.9”, “1 to 5 and 10”, “2 and 8 to 10”, and “1.5 to 4 and 8”.

[0018] The disclosures described herein as illustrative examples can be properly implemented in the absence of any elements or limitations not specifically disclosed herein. Compositions and methods are described herein in terms of "containing" various components or steps, but these compositions and methods may also "essentially consist of" or "consist of" various components or steps unless otherwise specified.

[0019] All parts, percentages, and proportions referred to herein and in the claims are by weight unless otherwise specified.

[0020] Before delving into the details of the following embodiments, some terms are defined or clarified.

[0021] The term "consumer product", as used herein, means a product typically used by consumers, such as automotive products, bathroom products, kitchen products, laundry products, paper products, personal care products, sports equipment, etc. Examples of such "consumer products" include laundry products (e.g., dryer sheets or detergent sheets, dye-catching sheets), odor reduction or elimination materials (e.g., shoe inserts), paper towels, toilet tissue paper plates, paper cups, writing paper, disposable dusting sheets, feminine hygiene products (e.g., tampons, pads, adult incontinence products, interlabile products, etc.), diapers, disposable wipes, aluminum foil, polymer kitchen film, sponges, disposable dishes, disposable cups, disposable tableware, abrasive pads, water filters, water filter cartridges, tile cleaners, toilet cleaners, floor cleaners, automotive air fresheners, razors, makeup removers, garbage bags, food storage bags, etc.

[0022] The term "consumer package" or "consumer packaging", as used herein, means a container (e.g., a container, bag, box) that houses a consumer product. Examples of such "consumer packaging" include beverage cans and bottles, shoe boxes, attached documents or literature, food containers (e.g., chip bags, cereal boxes, cans, frozen food containers), etc.

[0023] As used herein, the term “substrate” means a material having at least one surface capable of receiving an emulsion by printing. The substrate may be of any size and shape. The size and shape of the substrate may depend on the product or package being manufactured, or the intended use of the substrate to be printed on. In some embodiments, the substrate may be a flat material, a convex material, or a concave material. In other embodiments, the substrate may be a woven material or a nonwoven material. In further embodiments, the substrate may be swellable, non-swellable, porous, non-porous, charged, uncharged, hydrophobic, hydrophilic, fibrous, non-fibrous, soluble, insoluble, erosive, or non-erosive. Furthermore, the printed emulsion may remain on the surface of the substrate, be embedded in the surface of the substrate, or be absorbed by the substrate, depending on the material, e.g., porosity or charge.

[0024] As used herein, the term "emulsion" refers to a fluid state in which a first fluid is dispersed in a second fluid that is typically immiscible with the first fluid, such as oil droplets dispersed in an aqueous solution.

[0025] The term "on an anhydrous basis," when used herein in relation to specific weight, means the weight of a material after it has been dried to completely remove all moisture, for example, if the moisture content of the material is 0%. Specifically, the weight of a material on an anhydrous basis can be obtained by weighing the material after it has been placed in an oven at 45°C until it reaches a certain weight.

[0026] The term "weight %" as used herein means a percentage by weight.

[0027] As used herein, the terms "g," "mg," and "μg" refer to "grams," "milligrams," and "micrograms," respectively. The terms "L" and "mL" refer to "liters" and "milliliters," respectively. The terms "m," "cm," "mm," "μm," and "nm" refer to "meters," "centimeters," "millimeters," "micrometers," and "nanometers," respectively. The term "ft" refers to "feet," the term "min" refers to "minutes," and the term "kD" refers to "kilodaltons."

[0028] This disclosure provides compositions for delivering aromas (e.g., flavors and / or fragrances) in consumer products or consumer packaging. The compositions comprise a substrate and an aroma emulsion printed and dried on the surface of the substrate, wherein the aroma emulsion comprises (i) an aroma, (ii)(iia) modified starch and (iib) disaccharides and / or disaccharide alcohols, and optionally (iii) a retention aid. Conveniently, this disclosure provides a sustainable and cost-effective technique for controlled aroma delivery from consumer products or packaging with high aroma retention during processing, storage, and exposure to the ambient environment. Surprisingly, it was discovered that combinations of modified starch and disaccharides and / or disaccharide alcohols can significantly increase the aroma retention rate in the composition. Surprisingly, it was also discovered that substrate surfaces made of polymers selected from the group of polyester, polyurethane, polypropylene, polyethylene, cellulose, and combinations thereof can further increase the aroma retention rate in the composition. Therefore, the technology described herein eliminates the need for expensive packaging that would otherwise be required to protect the fragrance from loss during storage and transport.

[0029] The fragrance emulsion comprises (i) a fragrance, (ii)(iia) a carrier comprising modified starch and (iib) disaccharides and / or disaccharide alcohols, and optionally (iii) a retention aid. In some embodiments, the fragrance comprises or is a flavor and / or fragrance. In some embodiments, the fragrance comprises or is a flavor. In some embodiments, the fragrance comprises or is a fragrance. In some embodiments, the fragrance includes fine fragrances, odor-masking fragrances, and medicinal fragrances. In some embodiments, the fragrance is selected from the group consisting of flavors, fragrances, odor neutralizers, pro-fragrances, and combinations thereof. The fragrance can be used alone or in combination with other active ingredients, such as deodorants, hygroscopic agents, antioxidants, antibacterial agents, antiviral agents, pest control agents, taste modifiers, and / or artificial sweeteners.

[0030] This disclosure allows for the use of a variety of flavors and fragrances. Flavors and fragrances can be selected from synthetic flavors and fragrances, oils and oil extracts derived from plants, leaves, flowers, fruits, and combinations thereof. Representative flavor oils, but not limited to, include spearmint oil, cinnamon oil, peppermint oil, clove oil, bay oil, thyme oil, thuja oil, nutmeg oil, sage oil, and bitter almond oil. Also useful are artificial, natural, or synthetic fruit flavors, such as vanilla, chocolate, coffee, and cocoa, as well as citrus oils (including lemon, orange, grape, lime, and grapefruit), and fruit essences (including apple, pear, peach, strawberry, watermelon, raspberry, cherry, plum, pineapple, and apricot). Representative fragrances, though not limited to them, include animal fragrances such as musk oil, civet, castorium, and ambergris, and plant fragrances such as nutmeg extract, cardamom extract, ginger extract, cinnamon extract, papadum oil, geranium oil, orange oil, mandarin oil, orange blossom extract, cedarwood, vetiver, lavandin, ylang-ylang extract, tuberose extract, sandalwood oil, bergamot oil, rosemary oil, spearmint oil, peppermint oil, lemon oil, lavender oil, citronella oil, chamomile oil, clove oil, sage oil, neroli oil, labdanum oil, eucalyptus oil, verbena oil, mimosa extract, narcissus extract, carrot seed extract, jasmine extract, frankincense extract, rose extract, and mixtures thereof. These flavors and fragrances can be used individually or in combination.

[0031] In some embodiments, after drying the fragrance emulsion on the surface of the substrate, the printed and dried fragrance emulsion contains at least 5% by weight, 10% by weight, 15% by weight, 20% by weight, 25% by weight, 30% by weight, 35% by weight, 40% by weight, 45% by weight, 50% by weight, 55% by weight, or 60% by weight on an anhydrous basis. In some embodiments, the printed and dried fragrance emulsion contains at least 75% by weight, 70% by weight, 65% by weight, 60% by weight, 55% by weight, 50% by weight, 45% by weight, or 40% by weight on an anhydrous basis, based on the weight of the printed and dried fragrance emulsion. In some embodiments, the amount of fragrance in the printed and dried fragrance emulsion is within the range of 5% to 70% by weight, 10% to 60% by weight, 20% to 50% by weight, 25% to 50% by weight, 25% to 60% by weight, 40% to 70% by weight, 45% to 70% by weight, 50% to 70% by weight, or 55% to 70% by weight, on an anhydrous basis, based on the weight of the printed and dried fragrance emulsion.

[0032] The fragrance may be encapsulated (i.e., encapsulated fragrance) or not (i.e., raw fragrance). As used herein, the term "encapsulated fragrance" means fragrance encapsulated in microcapsules, and the term "raw fragrance" means fragrance that is not encapsulated. In some embodiments, the fragrance is a combination of raw fragrance and encapsulated fragrance, with weight ratios of raw fragrance to encapsulated fragrance being 10:1 to 1:1, 8:1 to 2:1, 7:1 to 2:1, 6:1 to 3:1, or 5:1 to 3:1. In some embodiments, the fragrance includes raw fragrance or is raw fragrance.

[0033] In some embodiments, the fragrance emulsion is an oil-in-water emulsion, and the fragrance exists as oil droplets within the emulsion. In some embodiments, the fragrance oil droplets present in the fragrance emulsion have an average droplet size of less than approximately 5 microns, less than approximately 4 microns, less than approximately 3 microns, less than approximately 2 microns, less than approximately 1 micron, less than approximately 0.9 microns, less than approximately 0.8 microns, less than approximately 0.7 microns, or less than approximately 0.6 microns, as determined by conventional methods such as laser diffraction, electropulse counting, or ultrasonic spectroscopy. Surprisingly, it has been found that having an average fragrance oil droplet size of less than 1 micron can significantly increase the fragrance retention rate in the composition.

[0034] The carrier in the aromatic emulsion comprises (a) modified starch and (b) a combination of disaccharide and / or disaccharide alcohol. In some embodiments, the carrier comprises modified starch and disaccharide. Modified starch in this disclosure is chemically modified starch. Such modifications include, but are not limited to, acid treatment, alkali treatment, bleaching, oxidation, enzymatic treatment, acetylation, phosphorylation, or combinations thereof. In some embodiments, the modified starch is selected from the group consisting of cationic starch, hydroxyethyl starch, carboxymethylated starch, and combinations thereof. In some embodiments, the modified starch includes or is octenyl succinic anhydride (OSA) modified starch, for example, those sold under trade names CAPSUL® and HI-CAP® 100. In some embodiments, the modified starch contains or is sodium starch octenyl succinate (E1450). In some embodiments, the modified starch has a weight-average molecular weight (M) of at least 5 kD (kilodaltons), at least 10 kD, at least 15 kD, at least 20 kD, at least 30 kD, or at least 50 kD. w) has. In some embodiments, the modified starch has a maximum of 800kD, a maximum of 700kD, a maximum of 600kD, a maximum of 500kD, a maximum of 400kD, a maximum of 300kD, or a maximum of 200kD M w It has.

[0035] In some embodiments, the disaccharide is selected from the group consisting of maltose, sucrose, fructose, trehalose, lactose, and combinations thereof. In some embodiments, the disaccharide is selected from the group consisting of maltose, sucrose, trehalose, and combinations thereof. In some embodiments, the disaccharide contains or is maltose. The disaccharide alcohol is a derivative of a hydrogenated disaccharide. In some embodiments, the disaccharide alcohol is selected from the group consisting of isomalt, mannitol, maltitol, xylitol, lactitol, and combinations thereof. In some embodiments, the disaccharide alcohol contains or is isomalt.

[0036] In some embodiments, the carrier contains at least 3% by weight, 4% by weight, 5% by weight, 8% by weight, 10% by weight, 15% by weight, 20% by weight, 25% by weight, 30% by weight, 35% by weight, 40% by weight, 45% by weight, 50% by weight, or 55% by weight of disaccharides and / or disaccharide alcohols. In some embodiments, the carrier contains at least 90% by weight, 85% by weight, 80% by weight, 75% by weight, 70% by weight, 65% by weight, 60% by weight, 55% by weight, 50% by weight, or 45% by weight of disaccharides and / or disaccharide alcohols. In some embodiments, the carrier contains disaccharides and / or disaccharide alcohols in amounts of 5% to 90% by weight, 5% to 70% by weight, 5% to 60% by weight, 5% to 50% by weight, 10% to 70% by weight, 10% to 60% by weight, or 10% to 50% by weight, based on the weight of the carrier. In some embodiments, the disaccharides and / or disaccharide alcohols are maltose.

[0037] In some embodiments, the carrier contains at least 10% by weight, 15% by weight, 20% by weight, 25% by weight, 30% by weight, 35% by weight, 40% by weight, 45% by weight, 50% by weight, or 55% by weight of modified starch, based on the weight of the carrier. In some embodiments, the carrier contains at least 97% by weight, 96% by weight, 95% by weight, 92% by weight, 90% by weight, 85% by weight, 80% by weight, 75% by weight, 70% by weight, 65% by weight, 60% by weight, 55% by weight, 50% by weight, or 45% by weight of modified starch, based on the weight of the carrier. In some embodiments, the carrier contains 10% to 95% by weight, 30% to 95% by weight, 40% to 95% by weight, 50% to 95% by weight, 30% to 90% by weight, 40% to 90% by weight, or 50% to 90% by weight, based on the weight of the carrier. In some embodiments, the modified starch is OSA-modified starch.

[0038] In some embodiments, the carrier in the aromatic emulsion may further include starch (e.g., rice starch, potato starch, corn starch), dextrin, maltodextrin, gum (e.g., gum arabic, xanthan gum, guar gum, locust bean gum, carrageenan), cellulose, cellulose derivatives (e.g., hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), hydroxypropylcellulose (HPC), hydroxyethylcellulose (HEC), and carboxymethylcellulose (CMC)), pectin, chitin, chitosan, or combinations thereof. In some embodiments, the carrier may further include dextran, pullulan, fructan, mannan, inulin, polydextrose, fleximers (ring-opened forms of dextran), or combinations thereof.

[0039] In some embodiments, the weight ratio of carrier to fragrance is at least 1:4, 1:3, 1:2.5, 1:2.3, 1:2, 1:1.5, or 1:1. In some embodiments, the weight ratio of carrier to fragrance is at most 10:1, 5:1, 4:1, 3:1, 2:1, or 1.5:1. In some embodiments, the weight ratio of carrier to fragrance is in the range of about 1:4 to about 10:1, about 1:2.4 to about 4:1, or about 1:2.3 to about 1:1.5.

[0040] In some embodiments, the fragrance emulsion includes a retention aid. As used herein, the term “retention aid” means a material that creates or increases the bond between the fragrance and / or carrier of the emulsion and the substrate. In this regard, retention aids can improve the fragrance performance, for example, by reducing the loss of fragrance from the composition over time or during storage. In some embodiments, the retention aid is selected from the group of sugars, plasticizers, and combinations thereof. In some embodiments, the retention aid is a combination of sugar and plasticizer. In some embodiments, the sugar in the retention aid is different from the disaccharide in the carrier. Exemplary sugars for use as retention aids include, but are not limited to, lactose, levose, glucose, sucrose, fructose, maltose, trehalose, cellobiose, chitobiose, ribose, arabinose, pentose, xylose, galactose, dextrose, and isomaltose. Examples of suitable plasticizers include, but are not limited to, esters such as phthalates (diethyl, dibutyl), ortho-phthalates, terephthalates, sebacates, citrates (triethyl, acetyltriethyl, acetyltributyl), triacetin, adipicates, azelaates, benzoates, trimelliticates, etc., polyols such as glycerol (glycerin), propylene glycol, polyethylene glycol (PEG), etc., and glycerides such as acetylated monoglycerides.

[0041] In some embodiments, the printed and dried fragrance emulsion contains at least 10% by weight, 8% by weight, 6% by weight, 4% by weight, 2% by weight, 1% by weight, 0.5% by weight, or 0.1% by weight of a retaining agent on an anhydrous basis. In some embodiments, the printed and dried fragrance emulsion contains at least 0.05% by weight, 0.5% by weight, 1% by weight, 3% by weight, or 5% by weight of a retaining agent on an anhydrous basis, based on the weight of the printed and dried fragrance emulsion. In some embodiments, the fragrance emulsion does not contain a retaining agent.

[0042] In some embodiments, the printed and dried fragrance emulsion comprises, on an anhydrous basis, about 5% to about 70% by weight of fragrance, at least about 20% by weight of carrier, and less than about 10% by weight of retention aid, based on the weight of the fragrance emulsion. In some embodiments, the printed and dried fragrance emulsion comprises, on an anhydrous basis, about 20% to about 60% by weight (preferably 25% to 60% or 30% to 50%) of fragrance, at least 20% to about 60% by weight (preferably 30% to 50%) of carrier, and 0% to 10% by weight (preferably 0.5% to 5%, 1% to 5%, 0.5% to 3%, or 3% to 5%) of retention aid, based on the weight of the fragrance emulsion.

[0043] In addition to fragrances, carriers, and optional retaining agents, the fragrance emulsion may further contain one or more additional additives, such as: additional active substances (e.g., antioxidants, anti-inflammatory agents, anesthetics, analgesics, antifungal agents, antibiotics, antivirals, antiparasitic agents, enzymes, coenzymes, antihistamines, and / or chemotherapeutic agents), stabilizers, emulsifiers (e.g., sodium lauryl sulfate, lecithin, sucrose esters, polysorbates, quillaja extract, and / or saponins), binders, sweeteners (e.g., stevia (Stevia rebaudiana) extract, rebaudioside A (Reb A), stevioside, Reb A) D, erythritol, xylitol, mannitol, sorbitol, inositol, aspartame, sucralose, and / or neotame), solid particles (e.g., silica and / or MCC), acidulants (e.g., citric acid, malic acid, succinic acid, acetic acid, hydrochloric acid, adipic acid, tartaric acid, fumaric acid, phosphoric acid, lactic acid, disodium dihydrogen pyrophosphate, and their salts), vitamins (e.g., vitamin A and its analogues and derivatives, vitamin E, vitamin C, vitamin B3, alpha hydroxy acids, and / or beta hydroxy acids), dyes, colorants, or pigments (lactoflavin, carotene, curcumin, lycopene, xanthophyll, cochineal red A, beetroot red, and / or phthalocyanine green), microcapsules, waxes, and combinations thereof. In some embodiments, the amount of additional additives is 0.1% to 50% by weight (e.g., 0.2-40%, 0.3-30%, 0.4-20%, or 0.5-10%) on an anhydrous basis, based on the weight of the aromatic emulsion.

[0044] In some embodiments, the fragrance emulsion further contains water. In some embodiments, the fragrance emulsion contains at least 90% by weight, 80% by weight, 70% by weight, 65% by weight, 60% by weight, 55% by weight, 50% by weight, 45% by weight, 40% by weight, or 35% by weight of water. In some embodiments, the fragrance emulsion contains at least 20% by weight, 25% by weight, 30% by weight, 35% by weight, 40% by weight, 45% by weight, 50% by weight, 55% by weight, 60% by weight, or 65% by weight of water. In some embodiments, the fragrance emulsion contains about 20% to about 80% by weight, about 32% to about 80% by weight, about 40% to about 70% by weight, or about 50% to about 65% by weight of water, based on the weight of the fragrance emulsion.

[0045] In some embodiments, the aromatic emulsion (before drying) has a viscosity of at least 10 cP (centipoise), 20 cP, 40 cP, 50 cP, 100 cP, 200 cP, 300 cP, 400 cP, 500 cP, 600 cP, 700 cP, 800 cP, 900 cP, or 1000 cP at room temperature (approximately 20°C). In some embodiments, the aromatic emulsion (before drying) has a viscosity of up to 10000 cP, 9000 cP, 8000 cP, 7000 cP, 6000 cP, 5000 cP, 2000 cP, 1000 cP, 500 cP, or 100 cP at room temperature (approximately 20°C). In some embodiments, the aromatic emulsion (before drying) has a viscosity in the range of 5 cP to 100 cP at room temperature (approximately 20°C).

[0046] In some embodiments, the printed and dried fragrance emulsion contains at most 15%, 12%, 10%, 8%, 6%, 5%, or 4% water by weight, based on the weight of the fragrance emulsion. In some embodiments, the printed and dried fragrance emulsion contains 4%–10%, or 4%–8%, water by weight, based on the weight of the fragrance emulsion. In some embodiments, the printed and dried fragrance emulsion has a water activity of 0.1–0.6, 0.2–0.5, or 0.2–0.4 (at 25°C). The term “water activity,” as used herein in reference to a substance, means the partial vapor pressure of water in that substance at a given temperature divided by the partial vapor pressure of pure water at the same temperature.

[0047] The surface of the substrate may be made of a polymer selected from the group consisting of polyester, polyurethane, polysaccharides (e.g., pullulan, cellulose, regenerated cellulose, e.g., rayon), polypropylene, polyethylene, polyvinyl alcohol (PVOH), gelatin, alginates, starch (e.g., modified starch or natural starch, e.g., tapioca starch), hydroxypropyl methylcellulose (HPMC), silk (i.e., polypeptides such as sericin and / or fibroin), nylon (i.e., aliphatic or semi-aromatic polyamides), wool (i.e., keratin polymers), and combinations thereof. In some embodiments, the surface of the substrate may be made of leather, glass, metal, ceramic, rubber, paper, cotton, rayon, plastic film, food (e.g., chewing gum, snacks, or crackers), or combinations thereof. Surprisingly, it was discovered that compositions comprising an aromatic emulsion printed and dried on a substrate surface made of a polymer selected from the group consisting of polyester, polyurethane, polypropylene, polyethylene, cellulose, and combinations thereof, can have an improved aromatic retention rate compared to corresponding compositions having a substrate surface made of certain other polymers (e.g., PVOH). Therefore, preferably, the substrate surface is made of a polymer selected from the group consisting of polyester, polyurethane, polypropylene, polyethylene, cellulose, and combinations thereof.

[0048] In some embodiments, the printed and dried fragrance emulsion contains up to 50% by weight, 45% by weight, 40% by weight, 35% by weight, 30% by weight, 25% by weight, or 20% by weight of fragrance on an anhydrous basis; the carrier contains 5% to 80% by weight, 5% to 70% by weight, 10% to 70% by weight, 10% to 60% by weight, 10% to 50% by weight, or 10% to 40% by weight of maltose on a weight basis; and the surface of the substrate is made of a polymer selected from the group consisting of PVOH, HPMC, gelatin, pullulan, methylcellulose, polyvinylpyrrolidone (PVP), pectin, and combinations thereof. In some embodiments, the surface of the substrate is made of a polymer selected from the group consisting of PVOH, HPMC, and combinations thereof. It has been found that such embodiments can achieve high fragrance retention rates.

[0049] In some embodiments, the printed and dried fragrance emulsion contains, on an anhydrous basis, 10% to 50% by weight, 20% to 50% by weight, 20% to 40% by weight, 25% to 50% by weight, 15% to 45% by weight, 25% to 45% by weight, 15% to 40% by weight, 25% to 40% by weight, or 15% to 35% by weight of fragrance; the carrier contains, on an anhydrous basis, 10% to 50% by weight, 20% to 50% by weight, 20% to 40% by weight, or 15% to 35% by weight of fragrance; and the carrier contains, on an anhydrous basis, 15% to 40% by weight of the carrier. The substrate contains maltose in amounts of 5% to 90% by weight, 5% to 80% by weight, 5% to 70% by weight, 5% to 60% by weight, 5% to 50% by weight, 10% to 80% by weight, 10% to 70% by weight, 10% to 60% by weight, 10% to 50% by weight, or 10% to 40% by weight; the surface of the substrate is made of a polymer selected from the group consisting of polyester, polyurethane, polypropylene, polyethylene, cellulose, and combinations thereof. It has been found that such embodiments can achieve a high fragrance retention rate.

[0050] In some embodiments, the printed and dried fragrance emulsion contains 40% to 70% by weight, 45% to 70% by weight, 50% to 70% by weight, or 55% to 70% by weight of the printed and dried fragrance emulsion on an anhydrous basis; the carrier contains 5% to 80% by weight, 5% to 70% by weight, 5% to 60% by weight, 10% to 80% by weight, 10% to 70% by weight, 10% to 60% by weight, 10% to 50% by weight, or 10% to 40% by weight of maltose, based on the weight of the carrier; and the surface of the substrate is made of a polymer selected from the group consisting of polyester, polyurethane, polypropylene, polyethylene, cellulose, and combinations thereof. It has been found that such embodiments can achieve high fragrance retention rates.

[0051] In some embodiments, the printed and dried fragrance emulsion contains 60% to 70% by weight of fragrance on an anhydrous basis, based on the weight of the printed and dried fragrance emulsion; the carrier contains 10% to 65% by weight, 20% to 65% by weight, 30% to 65% by weight, 40% to 65% by weight, 45% to 65% by weight, or 50% to 65% by weight of maltose, based on the weight of the carrier; and the surface of the substrate is made of a polymer selected from the group consisting of polyester, polyurethane, polypropylene, polyethylene, cellulose, and combinations thereof. It has been found that such embodiments can achieve high fragrance retention rates.

[0052] The substrate may be single-layer or multi-layer. In some embodiments, the substrate is multi-layer, i.e., the substrate has two or more layers. Each of the two or more layers may be composed of the same or different material (e.g., polymer). Whether single-layer or multi-layer, each layer of the substrate may be composed of one or more materials and may be in the form of a film, tape, sheet, wipe, bag, sticker, food packaging, insert, or pad.

[0053] In some embodiments, a fragrance emulsion printed and dried on the surface of a substrate can be protected (to prevent the release or loss of fragrance) by applying an adhesive, peelable cover film / sheet or adhesive, peelable backing layer to the printed surface of the substrate. For example, a high-purity fragrance can be printed on a sticker, and a cover sheet pre-treated with a pressure-sensitive adhesive can be applied to the surface of the sticker containing the printed fragrance, allowing the customer to sample the fragrance by removing the cover sheet. Thus, in some embodiments, the composition further includes an adhesive cover film or backing layer on the printed surface of the substrate.

[0054] The release of fragrance can be controlled by various application conditions, such as heat, diffusion, repeated rubbing, water and / or humidity, by removing the adhesive peelable cover film from the printed surface, or by various combinations thereof. (Figure 1) The release of fragrance can also be controlled by adjusting printing parameters such as dot size, dot spread, and / or fragrance emulsion composition.

[0055] This disclosure also provides a method for producing the compositions described herein to create a desired consumer experience. This method comprises: (a) providing an aromatic emulsion comprising (i) an aromatic, (ii) a carrier comprising modified starch and disaccharides and / or disaccharide alcohols, and optionally (iii) a retaining agent; (b) printing the aromatic emulsion onto the surface of a substrate; and (c) drying the printed aromatic emulsion on the surface of the substrate. In some embodiments, the aromatic emulsion is printed on the surface of the substrate in a predetermined pattern or design, i.e., the position and amount of the aromatic emulsion to be printed on the surface of the substrate are determined before printing. The aromatic emulsion can be printed as letters, numbers, or geometric shapes (including, but not limited to, squares, circles or dots, triangles, rectangles, hexagons, etc.). The design may be letters, words, or text, as well as other forms, such as graphics, images, or logos. In some embodiments, the aromatic emulsion is printed as individual dots that collectively provide a certain shape or design.

[0056] In some embodiments, the aromatic emulsion is printed on the surface of a substrate in an array (e.g., an array of dots), where the array includes a dot pattern that is uniformly distributed and has a center-to-center distance between dots of 1 mm to 30 mm (see Figure 2). In some embodiments, the dots have a center-to-center distance between dots of 1 mm to 20 mm, or 1 mm to 10 mm. In some embodiments, the dots have substantially the same diameter and center-to-center distance between dots as 1.1 to 3 times the diameter, or 1.1 to 2 times the diameter, or 1.1 to 1.5 times the diameter.

[0057] In some embodiments, the aromatic emulsion can be prepared or provided via the following steps, i.e., step (a) may include: (a1) preparing an aqueous phase by dissolving and / or dispersing a carrier and optionally a retaining agent in water; (a2) preparing an oil phase containing the fragrance; and (a3) ​​mixing the oil phase with the aqueous phase to produce an oil-in-water emulsion. In some embodiments, the oil phase and aqueous phase are first mixed to form a coarse emulsion, and then the coarse emulsion is subjected to shear force (e.g., a high-speed homogenizer) to produce an aromatic emulsion, which is then printed. In some embodiments, the aromatic emulsion is produced at a shear rate in the range of 10,000 rpm to 30,000 rpm, or 12,000 rpm to 25,000 rpm, for about 3 to 15 minutes, or about 5 to 10 minutes. In some embodiments, the resulting fragrance emulsion is diluted (e.g., with water or aqueous solution or suspension) and / or has additional additives (e.g., solid particles, surfactants, dyes, colorants or pigments, gums, and / or additional active substances) added before being printed onto the surface of a substrate.

[0058] In step (b), the aromatic emulsion is printed onto the surface of the substrate. In some embodiments, the aromatic emulsion can be directly printed, dropped, or deposited onto the surface of the substrate in a controlled and precise manner in a predetermined pattern, such as a dot pattern or design. In this respect, printing by this method differs from spraying (emulsion on substrate), coating (emulsion on substrate), atomizing (emulsion on substrate), or immersion (substrate in emulsion) (these apply the emulsion to the substrate in an uncontrolled, non-uniform, or random pattern (spraying or atomizing), or without any uncoated areas on the surface of the substrate (coating or immersion)). Furthermore, in contrast to spraying, coating, atomizing, or immersion, droplets of the aromatic emulsion in this method can be printed to a predetermined size to control one or more of the amount of fragrance on the substrate, the amount of fragrance released, dot spread, or compatibility with the substrate.

[0059] Aromatic emulsions can be printed onto the surface of a substrate using a printing assembly. The printing assembly may be a non-contact printing assembly, such as an inkjet type print head or nozzle array that drops or deposits the emulsion onto the surface; or a contact printing assembly, such as a flatbed screen, rotary screen, reverse gravure, or flexographic printing assembly. In some embodiments, the printing assembly is a non-contact printing assembly. In some embodiments, the aromatic emulsion is supplied to the non-contact printing assembly, which prints or deposits the aromatic emulsion in individual droplets onto the surface of the substrate, and the substrate directly receives the printed aromatic emulsion. As used herein, the term “non-contact printing assembly” means a printing assembly that does not or does not come into contact with the surface of the substrate during the printing process.

[0060] There are two types of ejection modes for non-contact printing assemblies: continuous mode (CM) and drop-on-demand (DOD). In continuous mode ejection, a continuous jet of fluid is emitted from the opening; due to Rayleigh instability, the jet breaks down into individual droplets after a certain distance. In drop-on-demand mode, individual droplets are ejected from the opening, typically as a result of an intermittent energy source.

[0061] In some embodiments, the fragrance emulsion is printed or deposited on the surface of a substrate as individual droplets, and the substrate directly receives the printed fragrance emulsion. In some embodiments, the droplets have an average droplet diameter of 100 microns to 5 mm, or 425 microns to 5 mm, or 1 mm to 4 mm. In some embodiments, the droplets have substantially the same diameter. Droplets smaller than 425 microns (i.e., particles that pass through a 40-mesh sieve) are considered dust. In some embodiments, each individual droplet has a diameter greater than 425 microns.

[0062] In step (c), the printed fragrance emulsion is dried on the surface of the substrate. The printed fragrance emulsion can be dried, for example, by infrared radiation, conduction, convection, or a combination thereof. In some embodiments, the printed fragrance emulsion is air-dried. In some embodiments, the printed fragrance emulsion is air-dried at temperatures of 30°C to 160°C, or 30°C to 110°C, or 40°C to 100°C, or 40°C to 90°C. In some embodiments, the printed fragrance emulsion is air-dried at temperatures up to 100°C. In some embodiments, the relative humidity (RH) of the air supplied to dry the printed fragrance emulsion is up to 35% RH, 15% RH, 7% RH, or 1% RH. In some embodiments, the printed fragrance emulsion is dried with dry air. In some embodiments, the drying process can be carried out under an inert gas atmosphere. Examples of inert gases include nitrogen, carbon dioxide, and noble gases (e.g., argon). In some embodiments, the drying process is carried out under a nitrogen gas atmosphere. In practice, the inert gas atmosphere may still contain trace amounts of oxygen. Typically, the inert gas atmosphere has oxygen levels of less than 90 g of oxygen per cubic meter of air, or less than 50 g of oxygen per cubic meter of air, or less than 30 g of oxygen per cubic meter of air, or less than 25 g of oxygen per cubic meter of air, or less than 23 g of oxygen per cubic meter of air.

[0063] In some embodiments, the printed fragrance emulsion is dried with a radiant heat source. Examples of suitable radiant heat sources include, but are not limited to, infrared and other light devices, electric radiant heaters, and radiant gas heaters. In some embodiments, the printed fragrance emulsion is dried with infrared radiation. In some embodiments, the printed fragrance emulsion is dried with infrared radiation in combination with conduction and / or convection.

[0064] In some embodiments, one or more method steps can be repeated. For example, an aromatic emulsion (i.e., a first emulsion) can be printed onto the surface of a substrate and dried, and then a second emulsion can be printed onto the same surface of the substrate and dried. In some embodiments, an aromatic emulsion (i.e., a first emulsion) is printed onto the surface of a substrate, and a second emulsion is printed onto the same surface of the substrate, and both the aromatic emulsion and the second emulsion are dried simultaneously. In some embodiments, the second emulsion is printed on top of the aromatic emulsion (i.e., the first emulsion), i.e., droplets of the second emulsion are printed onto the surface of droplets of the aromatic emulsion, and these emulsions are dried. In some embodiments, the second emulsion is printed on the surface of the substrate in a location or area adjacent to where the aromatic emulsion (i.e., the first emulsion) is printed. See Figures 2A and 2B. Accordingly, the compositions of the present disclosure may further comprise a second emulsion printed on and dried on the surface of a substrate, wherein the second emulsion is printed on or adjacent to the aromatic emulsion.

[0065] Similar to the aromatic emulsion (i.e., the first emulsion), the second emulsion may contain (i) a second fragrance, (ii) a second carrier comprising a second modified starch and a second disaccharide and / or a second disaccharide alcohol, and optionally (iii) a second retention aid. In some embodiments, at least one of the components of the aromatic emulsion (i.e., the first emulsion) and the second emulsion are different. In such embodiments, the at least one different component may be a fragrance, a carrier, a retention aid, or an additional additive. For example, the aromatic emulsion and the second emulsion may have the same fragrance, carrier, and retention aid, where the aromatic emulsion contains a blue pigment and the second emulsion contains a red pigment. As another example, an aromatic emulsion may include a carrier having a different aroma release profile or inducement than the carrier of the second emulsion, such that the aroma in the first emulsion and the aroma in the second emulsion are released at different times and rates due to different inducements (e.g., water, heat, pH, etc.). In some embodiments, the second emulsion may include components that are incompatible with the components in the aromatic emulsion (i.e., the first emulsion). Thus, incompatible components can be provided on the same substrate but not in the same emulsion. Incompatibility of components may include, but are not limited to, the possibility of reactions between components or components that may have a negative effect on aroma retention. As an example, a high amount of surfactant used in cleaning products may affect aroma retention, and as a result, it may be beneficial to print the aroma and surfactant separately. Another example is the reaction of two components when mixed: sodium nitrite reacts with citric acid in water to release nitric oxide, which can be used for meat storage. Therefore, the compositions of this disclosure can accommodate two or more incompatible components.

[0066] In some embodiments, the method of the present disclosure further includes applying a retention agent to the surface of a substrate. In such embodiments, the retention agent in the fragrance emulsion and the retention agent applied to the substrate surface may be the same or different. In some embodiments, the retention agent is applied only to the surface of the substrate and is not added to the fragrance emulsion.

[0067] In some embodiments, the method of the present disclosure further includes the step of applying an adhesive peelable cover film / sheet or an adhesive peelable backing layer to the printed surface of a substrate.

[0068] Printing fragrance emulsions according to this method offers significant advantages over applying unprocessed fragrance oils to a substrate. Using unprocessed fragrance oils results in rapid evaporation of volatile compounds, leading to a rapid fragrance release profile and a decrease in intensity over time. In comparison, the release of fragrance printed on the substrate surface by this method can be controlled by selecting a carrier, retention aid, dot size, and / or dot spreading to release fragrance under one or more specified conditions. As used herein, “dot spreading” refers to the area over which the printed dots spread on the substrate surface. In other words, “dot spreading” refers to the contact area between the printed dots and the substrate surface.

[0069] This disclosure also provides consumer products or consumer packaging comprising the compositions of this disclosure. Examples of consumer products or consumer packaging include, but are not limited to, storage containers or bags for imparting fragrance to stored items; portable items such as sheets that release a calming or invigorating fragrance upon request (e.g., by rubbing the surface); pillow inserts printed with a calming fragrance (e.g., lavender) to aid sleep; food packaging inserts that release flavor to food upon diffusion, heating, and / or contact with moisture; tea bags that release flavor to food upon diffusion, heating, and / or contact with moisture; bath tissues or other materials that release fragrance when applied to the skin. Examples include personal care or hygiene products such as toilet paper; shoe inserts that release odor-masking and / or fragrance compounds when inserted into shoes or compressed during walking; garbage bags that release odor-masking and / or fragrance compounds; fabric care sheets such as laundry sheets that release fragrance when exposed to the heat of a dryer; cleaning sheets, wipes, or pads that release fragrance when wiping (rubbing) a surface; cleaning pads that release fragrance when wet; and car mats or entrance door mats that are activated by friction when walked on or stepped on.

[0070] Therefore, the compositions of this disclosure can be used in a wide variety of fragrance applications, including home care, personal care, beauty care, food deodorization, high-purity fragrances, sleep aids, pest control, cleaning, and scented wipes. Furthermore, the compositions of this disclosure can be used in food packaging, flavor delivery, and other functional fragrance delivery (such as antibacterial agents, antifungal agents, or antioxidants). Further applications include medicinal fragrances to promote health and well-being, as well as environmental purification.

[0071] Many aspects and embodiments have been described above, but these are illustrative and not limiting. Those skilled in the art will recognize, after reading this specification, that other aspects and embodiments are possible without departing from the scope of the invention. [Examples]

[0072] The following non-limiting examples are provided to further illustrate the present invention and should not be construed as limiting the invention, as many modifications of the invention are possible without departing from the spirit or scope of the invention.

[0073] Example 1: Test Method Activation test. Printed substrates (i.e., substrates with a printed and dried aromatic emulsion on them) were tested for activation of aromatic release by abrasion. The printed substrates were repeatedly abraded over several days, and aromatic release and aromatic profiles were evaluated.

[0074] Other forms of activation, including contact with water and lamination, can also be tested. By laminating a cover film onto the printed surface of the substrate, the fragrance can be completely covered, and an explosive fragrance release can be provided when the cover film is peeled off. The cover film can be reapplied to the printed surface of the substrate and can be repeatedly removed and reapplied for explosive fragrance release. In another embodiment, water can be added to the printed substrate to dissolve the fragrance emulsion and provide an explosive fragrance. Furthermore, the fragrance emulsion can be continuously released by exposing it to high humidity.

[0075] Abrasion testing of the adhesion of printed fragrance emulsions to substrates. The adhesion of printed fragrance emulsions to substrates was quantitatively tested using an abrasion tester. The abrasion tester controlled the number of strokes and the abrasion frequency. Printed substrate samples were taped to the surface of a support under an abrasive. The abrasive was a 0.25-inch diameter rubber disc with a hardness of 70A, located in an abrasive holder. A constant weight was added to the top to increase abrasion strength. During use, the abrasive was continuously applied to the sample by moving it back and forth at a preset number of strokes. The number of strokes of the printed fragrance emulsion remaining at a given load weight provided an indicator of how well the printed fragrance emulsion adhered to the substrate.

[0076] Aroma retention rate under ambient conditions. The aroma retention rate and olfactory perception of printed aroma emulsions were compared with those of unprocessed aroma oils. Unprocessed aroma oil samples were prepared by pipetting 20 mg of unprocessed aroma oil onto a nonwoven polyurethane substrate in the same dot pattern as the printed aroma emulsion. The printed aroma emulsion also contained 20 mg of the same aroma oil on a substrate of the same size and type. These samples were left to mature for up to 4 weeks under ambient conditions (room temperature, relative humidity 20-70%) in an unoccupied room, followed by sensory evaluation, and then gas chromatography to quantitatively measure the aroma retention rate.

[0077] Example 2: Preparation of printed substrate A coarse emulsion containing the components listed in Table 1 was prepared. The term "wet %" as used in this disclosure means the weight percentage (of the components) based on the total weight of the emulsion containing water. The coarse emulsion was refined into a fine emulsion using a high-shear homogenizer. This fine emulsion was then printed onto two different substrate sheets, namely nonwoven polyurethane and spunlace polyester, using a piezo-driven REA jet valve with a 350 μm nozzle. [Table 1]

[0078] The printed substrate sheets were dried with infrared (IR) light for 2 minutes. The printed substrate sheets had various dot sizes and inter-dot distances, with a concentration of 0.6–2.1 mg / cm². 2 It had a fragrance loading.

[0079] The performance of printed substrate sheets was tested in 12-quart containers with fragrance loadings ranging from 20 mg to 80 mg. Regardless of loading density, all sheets were allowed to release fragrance for at least 5 months with occasional (once a week) openings, and for at least 3 weeks with frequent (once a day, left open for 5 minutes, then closed again) openings, and there were some differences in intensity depending on the dot size and amount of fragrance. In particular, larger printed dots showed slower release at the start and higher retention rates at the end of the 5-month test.

[0080] Abrasion test. Following the test method of Example 1, the printed and dried fragrance emulsion showed excellent adhesion to the substrate sheet and remained intact even after more than 120 strokes under a 250g load.

[0081] Fragrance retention test. Following the test method of Example 1, the printed and dried fragrance emulsion showed a significant improvement in the overall fragrance retention rate over time compared to the untreated fragrance oil sample (Figure 3). Furthermore, the printed and dried fragrance emulsion retained the entire fragrance very well, with a fragrance retention rate of over 90% after 4 weeks of exposure. In contrast, the untreated fragrance oil sample showed a dramatic loss of the entire fragrance from the first day, with the fragrance retention rate decreasing to 20% after 3 days of exposure and 5% after 4 weeks of exposure (Figure 3).

[0082] The dot size was found to affect fragrance retention and release rate in newly prepared samples and samples stored for 8 weeks (Figure 4). Larger dots provided greater protection for the fragrance contained within them, and therefore slowed fragrance diffusion from the printed and dried fragrance emulsion. This was reflected in both the fragrance retention and release profiles.

[0083] Gas chromatography (GC) analysis showed that the printed fragrance emulsion protected highly volatile components from premature release compared to the untreated fragrance oil sample (Figure 5B) (Figure 5A). In the untreated fragrance oil sample, highly volatile components showed significant loss on the first day, with complete loss of the most volatile component p1, retention of only 5% of the highly volatile component p2, and retention of 20% of the volatile component p3. By day 3, 12 of the most volatile components (p1-p12) in the untreated fragrance oil sample were completely lost, and the remaining components (p13-p26) continued to decrease over time. After two weeks, only the less volatile components (p23-p26) were still detectable by GC in the untreated fragrance oil sample, with only 4 of the 26 components (p23-p26) still retained at a retention rate of 50-60%. See Figure 5B. In comparison, the printed fragrance emulsion samples showed excellent retention of all components over a 4-week period, with only slight loss of some highly volatile components. See Figure 5A.

[0084] Activation test. Following the test method of Example 1, printed substrate sheets were subjected to activation by abrasion. Printed fragrance emulsion samples and untreated fragrance oil samples for the same elapsed time were combined for direct comparison. Before abrasion, when the samples were fresh, the untreated fragrance oil sample showed significantly higher fragrance intensity than the printed fragrance emulsion sample, and the difference gradually decreased as the exposure time increased (Figure 6A). After one week, the printed fragrance emulsion sample and the untreated fragrance oil sample had very similar intensity, and after two weeks, the printed fragrance emulsion sample was superior to the untreated fragrance oil sample. These results demonstrate that the printed fragrance emulsion provides better stability to the fragrance over time than the untreated fragrance oil.

[0085] Upon abrasion, the abrasion activated the printed fragrance emulsion sample, causing it to release its fragrance and immediately become quite strongly scented (Figure 6B). In comparison, the untreated fragrance oil sample showed no change in fragrance intensity after abrasion (Figure 6B). The abraded printed fragrance emulsion sample exhibited a stronger fragrance intensity than the untreated fragrance oil sample from the very first day. Furthermore, the olfactory intensity and top note of all abraded printed fragrance emulsion samples were very similar at different exposure times. These results demonstrate excellent retention of all volatile fragrance components in the printed fragrance emulsion throughout the entire test period.

[0086] Example 3: Flavor printed on polyester film for frozen food packaging Flavor emulsions were prepared using the components listed in Table 2. The flavor oil droplets in the emulsions had an average droplet size of less than 1 micron. The flavor emulsions were printed onto a polyester film to form dots of varying sizes. The printed flavor emulsions were then dried, and the flavor retention rate was evaluated. This evaluation revealed that larger printed dot sizes increased the flavor retention rate.

[0087] The printed flavor emulsions were then air-dried at 67°C or 100°C, and their flavor retention was evaluated. These printed and dried flavor emulsions were then evaluated at storage times of 0, 4, and 8 weeks. The printed flavor emulsions dried at 67°C or 100°C were found to maintain nearly 100% flavor retention throughout 8 weeks of storage. [Table 2]

[0088] Example 4: Flavor retention rate using various substrates Flavor emulsions were prepared using the components listed in Table 3. The flavor emulsions were printed onto PVOH (polyvinyl alcohol) film and polyester film, respectively. The printed flavor emulsions were air-dried at room temperature or dried with infrared (IR) light. Flavor retention was evaluated on the same day as printing / drying, and the results (Table 4) showed that the flavor emulsions printed and dried on polyester film had a significantly higher retention rate than the flavor emulsions printed and dried on PVOH film. [Table 3] [Table 4]

[0089] Example 5: Delivery of coffee flavor on a substrate Flavor emulsions were prepared using the ingredients listed in Table 5. These emulsions were printed onto polyester film and dried. A portion of the film containing 150 dots, dispensing 6.7 mg of coffee flavor oil, was taped to the lid of a coffee cup. For comparison, a control was prepared by directly adding 0.67 g of 1% unprocessed coffee flavor to a second cup and taping a blank film to the lid. Boiling water (100 mL) was added to each cup, and the lids were secured to each cup.

[0090] A trained panel of subjects evaluated the coffee aroma intensity (on a scale of 0 to 10) upon opening the lids. The sensory evaluation results demonstrated that the printed polyester film delivered a higher coffee aroma than the unprocessed coffee flavor oil sample throughout the evaluation process (Figure 6). The printed polyester film sample was perceived as significantly higher than the control at each time point. [Table 5] [Table 6]

[0091] Example 6: Delivery of chicken flavor on a substrate A chicken flavor emulsion was prepared using the ingredients listed in Table 7. This emulsion was printed onto a polyester film and dried. A 3-inch x 3-inch strip of the printed polyester film, dispensing approximately 19 mg of chicken flavor oil, was taped to the lid of a container containing 100 g of frozen cauliflower rice. For comparison, a control was prepared by directly adding 0.19 g (10%) of raw chicken flavor oil to cauliflower rice and taping a blank film to the lid. Both the printed and control samples were microwaved for 2 minutes, cooled for 1 minute, and then the lids were removed (T-0), and the samples were evaluated for chicken aroma intensity.

[0092] A trained panel of subjects evaluated the chicken aroma intensity (on a scale of 0 to 10) upon opening the lid. The sensory evaluation results demonstrated that the printed polyester film delivered a chicken aroma equal to or greater than that of the control (unprocessed chicken flavor oil sample) (Table 8). [Table 7] [Table 8]

[0093] Example 7: Flavor emulsions having different carriers or different oil droplet sizes Flavor emulsions were prepared consisting of 24% Sweet Orange Valencia flavor oil, 64% water, and the carriers listed in Table 9, and printed onto a polyester substrate. These printed flavor emulsions were dried with infrared (IR) light. Flavor retention was evaluated on the same day as printing / drying, and the results (Table 9) demonstrate that flavor emulsions containing flavor oil droplets with an average droplet size of less than 1 micron significantly increased the flavor retention rate in the composition. [Table 9]

[0094] Example 8: Flavor emulsions air-dried at different temperatures Flavor emulsions were prepared using the components listed in Table 10. The prepared flavor emulsions contained flavor oil droplets with an average droplet size of 0.70 μm. The prepared flavor emulsions also had a viscosity of 10.1 cP, measured at room temperature. These emulsions were printed onto polyester films and air-dried at different temperatures (Table 11). Flavor retention was evaluated on the same day as printing / drying, and the results (Table 11) demonstrated that high flavor retention rates could be achieved by air-drying the flavor emulsions at temperatures up to 100°C. [Table 10] [Table 11]

[0095] Example 9: Fragrance emulsions having different carriers or on different substrates Two flavor emulsions were prepared using the components listed in Table 12. Emulsion 1 had a viscosity of 16 cP at room temperature, and emulsion 2 had a viscosity of 17 cP at room temperature. The fragrance oil droplets in both fragrance emulsions had the same average droplet size of 0.4 microns. These emulsions were printed onto polyester film and PVOH film, respectively, using a piezo-driven REA jet valve with a 350 μm nozzle. These printed fragrance emulsions were then dried with infrared (IR) light for 4 minutes. The retention rate of the fragrance oil was measured at 4°C, both when fresh and after 9 days of storage. The results are shown in Table 13. [Table 12] [Table 13]

[0096] Example 10: Fragrance emulsions printed on different substrates Emulsion 2 (as shown in Table 12) was printed onto the following substrates: polypropylene (PP) film, polyester film, polyurethane (PU) film, HPMC film, and PVOH film. Printing was performed using a piezo-driven REA jet valve with a 350 μm nozzle. These printed fragrance emulsions were then dried with infrared (IR) light for 4 minutes. The fragrance oil retention rate was measured at 4°C, both when fresh and after 9 days of storage. The results are shown in Table 14. [Table 14]

[0097] Example 11: Flavor emulsions having different carriers or on different substrates Two flavor (Orange Valencia) emulsions were prepared using the components listed in Table 15. Emulsion 3 had a viscosity of 19 cP at room temperature, and emulsion 4 had a viscosity of 21 cP at room temperature. The flavor oil droplets in both flavor emulsions had the same average droplet size of 0.7 microns. These emulsions were printed onto polyester film and PVOH film, respectively, using a piezo-driven REA jet valve with a 350 μm nozzle. These printed flavor emulsions were then dried with infrared (IR) light for 4 minutes. The retention rate of flavor oil was measured when fresh. The results are shown in Table 16. [Table 15] [Table 16]

[0098] Example 12: Flavor emulsions printed on different substrates Emulsion 4 (as shown in Table 15) was printed onto the following substrates: polypropylene (PP) film, polyester film, polyurethane (PU) film, HPMC film, and PVOH film. Printing was performed using a piezo-driven REA jet valve with a 350 μm nozzle. These printed flavor emulsions were then dried with infrared (IR) light for 4 minutes. The flavor oil retention rate was measured at 4°C both when fresh and after 13 days of storage. The results are shown in Table 17. [Table 17]

[0099] Example 13: Flavor emulsions with 20% oil and various maltose / starch ratios Six flavor emulsions were prepared using the components listed in Table 18. The term "Emul" refers to an emulsion. All flavor emulsions contained the same average oil droplet size of 0.4 microns. The viscosity of these emulsions was controlled to within the range of 12–22 cP at room temperature. These emulsions were printed onto polyester films using a piezo-driven REA jet valve with a 350 μm nozzle. These printed flavor emulsions were then dried with infrared (IR) light (drying times are shown in Table 19). The flavor oil content in the printed and dried flavor emulsions was 20% by weight on an anhydrous basis, based on the weight of the flavor emulsion. The flavor oil retention rate was measured when fresh and after 6 hours of exposure to air in an environmental chamber set to 37°C and 70% RH. The results are shown in Table 19. [Table 18] [Table 19]

[0100] Example 14: Flavor emulsions with 60% oil and various maltose / starch ratios Six flavor emulsions were prepared using the components listed in Table 20. The term "Emul" refers to an emulsion. All flavor emulsions contained the same average oil droplet size of 0.4 microns. The viscosity of these emulsions was controlled to within the range of 21–25 cP at room temperature. These emulsions were printed onto polyester films using a piezo-driven REA jet valve with a 350 μm nozzle. These printed flavor emulsions were then dried with infrared (IR) light (drying times are shown in Table 21). The flavor oil content in the printed and dried flavor emulsions was 60% by weight on an anhydrous basis, based on the weight of the flavor emulsion. The flavor oil retention rate was measured when fresh and after 6 hours of exposure to air in an environmental chamber set to 37°C and 70% RH. The results are shown in Table 21. [Table 20] [Table 21]

[0101] Example 15: Flavor emulsions with 20% oil and various maltose / starch ratios Emulsions 5-10 (as shown in Table 18) were printed onto PVOH films using a piezo-driven REA jet valve with a 350 μm nozzle. These printed flavor emulsions were then dried with infrared (IR) light (drying times are shown in Table 22). The flavor oil content in the printed and dried flavor emulsions was 20% by weight on an anhydrous basis, based on the weight of the flavor emulsion. The flavor oil retention rate was measured both when fresh and after 6 hours of exposure to air in an environmental chamber set at 37°C and 70% RH. The results are shown in Table 22. [Table 22]

[0102] Example 16: Flavor emulsions with 40% oil and various maltose / starch ratios Six flavor emulsions were prepared using the components listed in Table 23. The term "Emul" refers to an emulsion. All flavor emulsions contained the same average oil droplet size of 0.4 microns. The viscosity of these emulsions was controlled to within the range of 12–24 cP at room temperature. These emulsions were printed onto polyester films using a piezo-driven REA jet valve with a 350 μm nozzle. These printed flavor emulsions were then dried with infrared (IR) light (drying times are shown in Table 23). The flavor oil content in the printed and dried flavor emulsions was 40% by weight on an anhydrous basis, based on the weight of the flavor emulsion. The flavor oil retention rate was measured when fresh and after 6 hours of exposure to air in an environmental chamber set to 37°C and 70% RH. The results are shown in Table 24. [Table 23] [Table 24]

[0103] Example 17: Flavor emulsions with 40% oil and various maltose / starch ratios Emulsions 17-22 (as shown in Table 23) were printed onto PVOH films using a piezo-driven REA jet valve with a 350 μm nozzle. These printed flavor emulsions were then dried with infrared (IR) light (drying times are shown in Table 25). The flavor oil content in the printed and dried flavor emulsions was 40% by weight on an anhydrous basis, based on the weight of the flavor emulsion. The flavor oil retention rate was measured both when fresh and after 6 hours of exposure to air in an environmental chamber set at 37°C and 70% RH. The results are shown in Table 25. [Table 25]

[0104] Example 18: Odor-masking shoe insert A fragrance emulsion was prepared using the components listed in Table 26. This fragrance emulsion contained an additional additive (microcrystalline cellulose (MCC)) suspended therein. It had a viscosity of approximately 1200 cP at room temperature. This fragrance emulsion was printed onto the surface of a spunlace polyester substrate with a silicone adhesive backing and a polypropylene liner, using a pneumatically driven P Jet valve with a 1.1 mm nozzle, at an average dot wet weight of approximately 5 mg. The printed substrate was dried in infrared (IR) light for 4 minutes. This printed and dried fragrance emulsion had a fragrance retention rate of over 85%. This printed and dried substrate had a fragrance retention rate of 0.6 mg / cm³. 2 The fragrance oil was loaded and cut into 2-inch x 4-inch pieces for use as shoe inserts. Each insert contained approximately 20 mg of fragrance oil loading. These shoe inserts were placed in the center of the shoe insole for odor masking and were able to last for 7 consecutive days. [Table 26]

[0105] Example 19: Sleep-aiding pillow insert A fragrance emulsion to aid sleep was prepared using the components listed in Table 27. This fragrance emulsion was printed onto the surface of a sheet made of recycled cotton using a piezo-driven REA jet valve with a 350 μm nozzle, at an average dot wet weight of approximately 0.45 mg. The printed fragrance emulsion was dried with infrared (IR) light for 1 minute. This printed and dried fragrance emulsion had a fragrance retention rate of over 90%. The printed and dried sheet had a fragrance content of 0.7–1.2 mg / cm³. 2It had a fragrance loading, which was cut into 7.4-inch x 9.7-inch pieces. Each piece had approximately 250-440 mg of fragrance oil loading, and was placed between the pillow and pillowcase to enhance fragrance release induced by head movement, body temperature, and / or perspiration, functioning as a sleep aid. [Table 27]

[0106] Please note that not all of the actions described above are required in the overall description or examples, some of the actions may not be required, and one or more additional actions may be performed in addition to those described. Furthermore, the order in which the actions are listed does not necessarily indicate the order in which they are performed.

[0107] The above specification has described the concept with respect to specific embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of the invention as specified in the following claims. Accordingly, this specification should be considered illustrative rather than restrictive, and all such modifications are intended to fall within the scope of the invention.

[0108] Benefits, other advantages, and solutions to problems have been described above with respect to specific embodiments. However, benefits, advantages, and solutions to problems, and any features that give rise to or make clearer any benefit, advantage, or solution, should not be construed as essential, required, or necessary features of any or all claims.

[0109] It should be recognized that certain features described herein in the context of other embodiments may also be provided in combination in a single embodiment for clarity. Conversely, various features described herein in the context of a single embodiment may also be provided separately or in any partial combination for brevity.

[0110] All documents cited herein, including any cross-referenced or related patents or applications, and any patent applications or patents for which this application claims priority or benefit thereof, are incorporated herein by reference unless expressly excluded or otherwise limited. No citation of any document constitutes prior art relating to any invention disclosed or claimed herein, nor does it teach, suggest, or disclose any such invention, either alone or in combination with any other reference. Furthermore, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in any document incorporated by reference, the meaning or definition of that term in this document shall prevail.

Claims

1. A composition comprising a substrate and an aromatic emulsion printed on the surface of the substrate and dried, wherein the aromatic emulsion comprises (i) an aromatic, (ii) a carrier comprising modified starch and a disaccharide and / or a disaccharide alcohol, and optionally (iii) a retention aid.

2. The composition according to claim 1, wherein the carrier comprises 5% to 90% by weight, 5% to 70% by weight, 5% to 60% by weight, 10% to 70% by weight, or 10% to 60% by weight of disaccharides and / or disaccharide alcohols, based on the weight of the carrier.

3. The composition according to claim 1 or 2, wherein the disaccharide is selected from the group consisting of maltose, sucrose, fructose, trehalose, lactose, and combinations thereof.

4. The composition according to claim 1 or 2, wherein the disaccharide comprises maltose.

5. The composition according to any one of claims 1 to 4, wherein the disaccharide alcohol is selected from the group consisting of isomalt, mannitol, maltitol, xylitol, lactitol, and combinations thereof.

6. The composition according to any one of claims 1 to 4, wherein the disaccharide alcohol comprises isomalt and / or maltitol.

7. The composition according to any one of claims 1 to 6, wherein the modified starch comprises octenyl succinic anhydride (OSA) modified starch.

8. The composition according to any one of claims 1 to 7, wherein the amount of fragrance is at least 20% by weight, 25% by weight, or 30% by weight on an anhydrous basis, based on the weight of the printed and dried fragrance emulsion.

9. The composition according to any one of claims 1 to 8, wherein the aroma comprises a flavor and / or fragrance.

10. The composition according to any one of claims 1 to 9, wherein the aromatic emulsion comprises a retaining agent selected from the group consisting of sugars, plasticizers, and combinations thereof.

11. The composition according to any one of claims 1 to 10, wherein the surface of the substrate is made of a polymer selected from the group consisting of polyester, polyurethane, polypropylene, polyethylene, cellulose, and combinations thereof.

12. The composition according to any one of claims 1 to 11, wherein the fragrance emulsion is an oil-in-water emulsion, the fragrance exists as oil droplets in the fragrance emulsion, and the oil droplets have an average oil droplet size of less than about 1 micron.

13. The composition according to any one of claims 1 to 12, wherein the fragrance emulsion is printed in an array on the surface of the substrate, and the array includes a dot pattern in which the dots are uniformly distributed and the distance between the center points of the dots is 1 mm to 10 mm.

14. The composition according to any one of claims 1 to 13, wherein the substrate is a single layer or a multilayer.

15. The composition according to any one of claims 1 to 14, further comprising a second emulsion printed on the surface of the substrate and dried, wherein the second emulsion is printed on or adjacent to the aromatic emulsion.

16. The composition according to any one of claims 1 to 15, further comprising an adhesive cover film or backing layer on the printed surface of the substrate.

17. A method for producing the composition according to any one of claims 1 to 16: (a) To provide the fragrance emulsion comprising (i) the fragrance, (ii) a carrier comprising the modified starch and the disaccharide and / or the disaccharide alcohol, and optionally (iii) the retention aid; (b) Printing the fragrance emulsion onto the surface of the substrate; (c) Drying the printed fragrance emulsion on the surface of the substrate. A method that includes this.

18. A consumer product or consumer package comprising the composition described in any one of claims 1 to 16.

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