TECHNICAL FIELD
[0001] The present invention relates to a product comprising a package containing an adhesive
perfume delivery material and a particulate composition.
BACKGROUND OF THE INVENTION
[0002] Products such as consumer products are typically designed and/or formulated to include
a perfume. The perfume of the product may improve the sensory experience of the consumer
for example at the point of purchase of the product, during the use, and/or after
the use of the product. To provide the consumer with a satisfying sensory experience,
several perfume delivery systems have been developed.
WO 07/35646 discloses a long list of these perfume delivery systems. The list includes perfume
delivery systems comprising an adhesive perfume delivery material.
[0003] However, when using an adhesive perfume delivery material, the sensory experience
of the consumer, for example when opening the package of the product, may vary. Variations
of the sensory experience of the consumer are typically observed when the product
comprises a particulate composition and/or when an adhesive perfume delivery material
is adhered to an internal wall of the package.
[0004] The sensory experience of the consumer may depend on the way the product has been
manufactured, shipped, or stored, or may depend on the relative position of the adhesive
perfume delivery material in the package of the product.
[0005] For example, the sensory experience of the consumer when the particulate composition
is fully or partially covering the adhesive perfume delivery material may be different
from the sensory experience of the consumer when the particulate composition is not
covering the adhesive perfume delivery material. This may happen if the package is
opened when the product is up-side down or if the particulate composition has contacted
the adhesive perfume delivery material when filling the package or when stocking the
product.
[0006] The sensory experience of the consumer may also be different at the point of purchase
of the product, during the use, and/or after the use of the product. The sensory experience
of the consumer when opening the package of the product for the first time may be
different from the sensory experience of the consumer when opening the package of
the product for the second time.
[0007] The sensory experiences of the consumer may vary when the particulate composition
has a different porosity, relative humidity, and/or a different density. The sensory
experiences of the consumer may vary when there is a change in the chemical composition
of the particulate composition.
[0008] The sensory experience of the consumer when opening the package of the product in
a way such as the adhesive perfume delivery material is substantially covered by the
particulate composition may be different from the sensory experience of the consumer
when opening the package of the product in a way such as the adhesive perfume delivery
material is not substantially covered by the particulate composition.
[0009] The sensory experience of the consumer when the product has been stored with the
adhesive perfume delivery material on the upper part of the product may be different
from the sensory experience of the consumer when the product has been stored with
the adhesive perfume delivery material on the lower part of the product.
[0010] The sensory experience of the consumer may also vary from product to product. In
particular, the sensory experience of the consumer opening a product 1 week after
the manufacturing of the product may be different from the sensory experience of the
consumer opening a product 4 months after the manufacturing of the product.
[0011] Such variations may result in a lack of control of the sensory experience of the
consumer, a non-optimal benefit delivery to the consumer, and/or a restriction of
the choices to manufacture a satisfying product.
[0012] Thus, there is a need for a product comprising an adhesive perfume delivery material
and a particulate composition, said product alleviating the problem of the lack of
control of the sensory experience of the consumer.
[0013] Alleviating the problem of the lack of control of the sensory experience of the consumer
may mean that the sensory experience of the consumer is less dependant of parameters
such as:
the number of times the package of the product has been opened before the sensory
experience of the consumer, the moment of the sensory experience of the consumer,
the way the package of the product is opened, the features of the product, and/or
the way the product is manufactured, shipped, or stored.
[0014] Alleviating the problem of the lack of control of the sensory experience of the consumer
may mean that a better control of the rate of release of the perfume, of the intensity
of the perfume, and/or of the character (the smell) of the perfume, is obtained. In
particular, alleviating the problem of the lack of control of the sensory experience
of the consumer may mean that a better control of the intensity of the perfume is
obtained.
SUMMARY OF THE INVENTION
[0015] In one embodiment of the present invention, the invention concerns a product comprising:
- a particulate composition,
- an adhesive perfume delivery material,
- a package at least partially separating the product and the adhesive perfume delivery
material from the external environment
wherein the adhesive perfume delivery material is adhered onto an internal wall of
the package and wherein at least 60% by weight of the particulate composition has
a particle size of above 150 µm.
[0016] The inventors have found that products of the invention could allow a better control
of the sensory experience of the consumer.
[0017] The inventors have found that smaller particle cover more fully and/or in a more
resilient manner the adhesive perfume delivery material such that the properties of
the adhesive perfume delivery material are more affected by smaller particles.
[0018] The present invention also concerns the process of manufacturing a product according
to the invention comprising at least the two following steps in any order:
- a- filling of the package with the particulate composition,
- b- adhering the adhesive perfume delivery material onto an internal wall of the package,
wherein the time lapse between step a and step b is of less than 7 days, in particular
of less than 1 day, for example of less than 2 hours.
[0019] The inventors have found that the lack of control in the sensory experience delivered
by the product that could arise when filling the particulate composition and adhering
the adhesive perfume delivery material over a short period of time could be reduced
when manufacturing a product according to the invention.
[0020] Unless otherwise specified, the percentage and ratio in the claims and the present
specification are by weight.
DETAILED DESCRIPTION OF THE INVENTION
The Product
[0021] The product of the invention comprises a particulate composition, an adhesive perfume
delivery material and a package. The product may be in the form it is intended to
be sold to the consumer. It may be intended not to submit the product to subsequent
commercial manufacture or modification.
[0022] The product may be a consumer product in the field of baby care, beauty care, fabric
& home care, family care, feminine care, health care, snack and/or beverage. In particular,
the product may be a fabric-care product, for example a laundry detergent composition.
The particulate composition
[0023] The product of the invention comprises a particulate composition. The product may
comprise from 50 to 99.99%, from 70 to 99.9%, from 85 to 99% or from 95 to 98%, by
weight of particulate composition.
[0024] A particulate composition may be a granular or powder-form composition. Preferably
the particulate composition is in free-flowing particulate form. The particulate composition
may be made by any particulation or granulation process. An example of such a process
is spray drying (in a co-current or counter current spray drying tower). Other suitable
processes include fluid bed processes, compaction processes (e.g. roll compaction),
extrusion and spheronization processes, as well as any chemical process like flocculation,
crystallisation, or sintering. The particulate composition may be made by different
processes, for example, part of the particulate composition may have been obtained
by spray drying and another part may have been dry-added.
[0025] At least 60% by weight of the particulate composition has a particle size of above
150 µm. In a preferred embodiment, at least 60% by weight of the particulate composition
has a particle size of above 200 µm or 250 µm or 300 µm or 400 µm or 500 µm or 700
µm In particular, at least 70% or 80% or 90% by weight of the particulate composition
has a particulate size of above 150 µm.
[0026] At least 90 or 95% by weight of the particulate composition may have a particle size
of above 100 µm.
[0027] At least 60%, in particular, by weight of the particulate composition may have a
particle size in the range of from 150 µm to 3000 µm. At least 50%, in particular
at least 60% or 70% or 80% or 90% by weight of the particulate composition may have
a particle size in the range of from 200 µm to 2000 µm, or in the range of from 250
µm to 1500 µm, or in the range of from 300 µm to 1000 µm, or in the range of from
350 µm to 800 µm.
[0028] Without wishing to be bound by theory, the inventors believe that when the particles
of the particulate composition are in contact with the adhesive perfume delivery material,
particulate composition with a broad particle size distribution tends to cover the
adhesive perfume delivery material in a more air-tight way. As such, the properties
of the adhesive perfume delivery material could be less affected by particulate composition
having a narrower particles size distribution.
[0029] Preferably, the % by weight of the particulate composition which has a particle size
of less than x µm size is measured by sievieng. For example, the following method
is used.
[0030] A x µm sieve is fitted on a base pan.
[0031] 50.0 g of the particulate composition is poured onto the calibrated sieve and the
sieve is closed with a lid.
[0032] The sieve, the lid, and the base pan are fixed into a rotap RX-29-10 (from Gilson
Company Inc) equipment.
[0033] The rotap is calibrated for 152 taps per minutes, 285 rpm elliptical motion.
[0034] The rotap is switched on for 2 minutes. The measurement is done at ambient condition,
for example at 20°C and at a relative humidity of 30%.
[0035] The quantity of particulate composition onto the base pan is weighted and is multiplied
by 2 to obtain the % by weight of the particulate composition which has a particle
size of less than x µm size.
[0036] The weight of particulate composition remaining on the sieve is weighted and the
measurement is repeated if the weight of particulate composition onto the sieve and
in the base pan is not equal to 50.0 g ± 0.1 g.
[0037] Preferably, the % by weight of the particulate composition which has a particle size
of more than x µm size is measured by sievieng. For example, the method defined just
above is used; the weight of particulate composition remaining on the sieve and multiplied
by 2 corresponds to the % by weight of the particulate composition which has a particle
size of more than x µm size.
[0038] The particulate composition may also have a specific moisture content, expressed
as a relative humidity value at 1 atmosphere and 20°C. The particulate composition
of the invention may have a relative humidity value below 45%, in particular between
5% and 35% or even between 10% and 25%. Particulate composition having such a relative
humidity value may allow a better control of the sensory experience of the consumer.
The term "relative humidity value" as used herein relates to the relative humidity
of air in the package in equilibrium with the particulate composition in the package.
It is an indirect measurement of the water activity in a solid. It is the ratio of
the current water concentration in the air (kg water/kg air) to the maximum at a given
temperature and pressure, expressed as a percentage of the value for saturated air.
For a solid an equilibrium is established between the water in the solid and the atmosphere,
and the measured relative humidity is a characteristic for that solid at a given temperature
and pressure.
[0039] The particulate composition may have a bulk density of from 300 g/l to 1,500 g/l,
for example from 400 g/l to 1,200 g/l or from 500 g/l to 1,000 g/l.
[0040] The particulate composition may comprise at least 20%, for example at least 30% or
40%, by weight of chemical compounds which do not comprise C-H (carbon-hydrogen) bonds.
The particulate composition may comprise less than 40%, or less than 20%, in particular
less than 15%, or even less than 10%, by weight of surfactant. The particulate composition
may comprise less than 20%, or less than 15, 10, 5 or 2%, by weight of aluminosilicate
builders. Particulate composition comprising a lower level of surfactant and/or a
higher level of inorganic compounds or compounds that do not comprise C-H bonds and/or
a lower level of aluminosilicate builders may allow a better control of the sensory
experience of the consumer.
[0041] The particulate composition may comprise a bleaching agent. For example the composition
may comprise at least 0.1%, or at least 1, 2, 5 or 10%, by weight of bleaching agent.
The product of the invention may allow a better control of the sensory experience
of the consumer, even when the particulate composition comprises a bleaching agent.
[0042] The particulate composition may comprise a perfume. The weight ratio of the perfume
comprised in the particulate composition to the perfume comprised on the adhesive
perfume delivery material may be from 0.01 to 20, from 0.05 to 10, or even from 0.1
to 5 or 0.2 to 2.
[0043] The particulate composition may be a detergent composition in particular a laundry
detergent composition.
[0044] The particulate composition may comprise ingredients chosen among the non-limiting
list of ingredient illustrated hereinafter. The precise nature of these additional
adjunct components, and levels of incorporation thereof, will depend on the physical
form of the composition and the nature of the operation for which the particulate
composition is to be used. Suitable ingredients include, but are not limited to, surfactants,
builders, flocculating aid, chelating agents, dye transfer inhibitors, enzymes and
enzyme stabilizers, catalytic materials, bleach activators, hydrogen peroxide, sources
of hydrogen peroxide, preformed peracids, polymeric dispersing agents, clay soil removal/anti-redeposition
agents, brighteners, suds suppressors, dyes, perfumes, structure elasticizing agents,
fabric softeners, carriers, hydrotropes, processing aids, solvents and/or pigments.
When one or more of these ingredients are present, such one or more adjuncts may be
present as detailed below:
SURFACTANT - The particulate composition may comprise a surfactant or surfactant system.
The compositions may comprise from 0.01% to 90%, or from 5 to 10%, by weight of a
surfactant system. The surfactant may be selected from nonionic surfactants, anionic
surfactants, cationic surfactants, ampholytic surfactants, zwitterionic surfactants,
semi-polar nonionic surfactants and mixtures thereof.
Anionic surfactants
[0045] Typically, the particulate composition comprises from 1 to 50 wt% anionic surfactant,
more typically from 2 to 40 wt%.
[0046] Suitable anionic surfactants typically comprise one or more moieties selected from
the group consisting of carbonate, phosphate, phosphonate, sulphate, sulphonate, carboxylate
and mixtures thereof. The anionic surfactant may be one or mixtures of more than one
of C
8-18 alkyl sulphates and C
8-18 alkyl sulphonates, linear or branched, optionally condensed with from 1 to 9 moles
of C
1-4 alkylene oxide per mole of C
8-18 alkyl sulphate and/or C
8-18 alkyl sulphonate.
[0047] Preferred anionic detersive surfactants are selected from the group consisting of:
linear or branched, substituted or unsubstituted, C
12-18 alkyl sulphates; linear or branched, substituted or unsubstituted, C
10-13 alkylbenzene sulphonates, preferably linear C
10-13 alkylbenzene sulphonates; and mixtures thereof. Highly preferred are linear C
10-13 alkylbenzene sulphonates. Highly preferred are linear C
10-13 alkylbenzene sulphonates that are obtainable, preferably obtained, by sulphonating
commercially available linear alkyl benzenes (LAB); suitable LAB include low 2-phenyl
LAB, such as those supplied by Sasol under the tradename Isochem
® or those supplied by Petresa under the tradename Petrelab
®, other suitable LAB include high 2-phenyl LAB, such as those supplied by Sasol under
the tradename Hyblene
®.
Alkoxylated anionic surfactants
[0048] The particulate composition may comprise an alkoxylated anionic surfactant. When
present alkoxylated anionic surfactant will generally be present in amounts form 0.1
wt% to 40 wt%, for example from 1wt% to 3wt% based on the particulate composition.
[0049] Typically, the alkoxylated anionic detersive surfactant is a linear or branched,
substituted or unsubstituted C
12-
18 alkyl alkoxylated sulphate having an average degree of alkoxylation of from 1 to
30, preferably from 3 to 7.
[0050] Suitable alkoxylated anionic detersive surfactants are: Texapan LESTTM by Cognis;
Cosmacol AESTM by Sasol; BES151TM by Stephan; Empicol ESC70/UTM; and mixtures thereof.
Non-ionic detersive surfactant
[0051] The particulate composition may comprise non-ionic surfactant. Where present the
non-ionic detersive surfactant(s) is generally present in amounts of from 0.5 to 20wt%,
or from 2wt% to 4wt% by weight of the particulate composition.
[0052] The non-ionic detersive surfactant can be selected from the group consisting of:
alkyl polyglucoside and/or an alkyl alkoxylated alcohol; C
12-C
18 alkyl ethoxylates, such as, NEODOL
® non-ionic surfactants from Shell; C
6-C
12 alkyl phenol alkoxylates wherein the alkoxylate units are ethyleneoxy units, propyleneoxy
units or a mixture thereof; C
12-C
18 alcohol and C
6-C
12 alkyl phenol condensates with ethylene oxide/propylene oxide block polymers such
as Pluronic
® from BASF; C
14-C
22 mid-chain branched alcohols, BA, as described in more detail in
US 6,150,322; C
14-C
22 mid-chain branched alkyl alkoxylates, BAEx, wherein x = from 1 to 30, as described
in more detail in
US 6,153,577,
US 6,020,303 and
US 6,093,856; alkylpolysaccharides as described in more detail in
US 4,565,647, specifically alkylpolyglycosides as described in more detail in
US 4,483,780 and
US 4,483,779; polyhydroxy fatty acid amides as described in more detail in
US 5,332,528,
WO 92/06162,
WO 93/19146,
WO 93/19038, and
WO 94/09099; ether capped poly(oxyalkylated) alcohol surfactants as described in more detail
in
US 6,482,994 and
WO 01/42408; and mixtures thereof.
Cationic detersive surfactant
[0053] The particulate composition may comprise a cationic detersive surfactant. When present,
preferably the particulate composition comprises from 0.1wt% to 10 wt%, or from 1wt%
to 2wt% cationic detersive surfactant.
[0054] Suitable cationic detersive surfactants are alkyl pyridinium compounds, alkyl quaternary
ammonium compounds, alkyl quaternary phosphonium compounds, and alkyl ternary sulphonium
compounds. The cationic detersive surfactant can be selected from the group consisting
of: alkoxylate quaternary ammonium (AQA) surfactants as described in more detail in
US 6,136,769; dimethyl hydroxyethyl quaternary ammonium surfactants as described in more detail
in
US 6,004,922; polyamine cationic surfactants as described in more detail in
WO 98/35002,
WO 98/35003,
WO 98/35004,
WO 98/35005, and
WO 98/35006; cationic ester surfactants as described in more detail in
US 4,228,042,
US 4,239,660,
US 4,260,529 and
US 6,022,844; amino surfactants as described in more detail in
US 6,221,825 and
WO 00/47708, specifically amido propyldimethyl amine; and mixtures thereof.
[0055] Highly preferred cationic detersive surfactants are mono-C
8-10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride, mono-C
10-12 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride and mono-C
10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride. Cationic surfactants
such as Praepagen HY (tradename Clariant) may be useful and may also be useful as
a suds booster.
[0056] BUILDER - The particulate composition may comprise a builder, in particular a water-insoluble
or partially water-soluble builder, a water-soluble builder, or a combination thereof.
Water-insoluble or partially water- soluble builder
[0057] The particulate composition may comprise water-insoluble or partially water-soluble
builder. Examples of largely water insoluble builders include the sodium aluminosilicates.
Suitable aluminosilicate zeolites have the unit cell formula
Na
z[(Al O
2)
z(SiO
2)
y]. xH
2O
wherein z and y are at least 6; the molar ratio of z to y is from 1.0 to 0.5 and x
is at least 5, preferably from 7.5 to 276, more preferably from 10 to 264.
[0058] The aluminosilicate material is in hydrated form and is preferably crystalline, containing
from 10% to 28%, more preferably from 18% to 22% water by weight in bound form. The
aluminosilicate zeolites can be naturally occurring materials, but are preferably
synthetically derived. Synthetic crystalline aluminosilicate ion exchange materials
are available under the designations Zeolite A, Zeolite B, Zeolite P, Zeolite X, Zeolite
HS and mixtures thereof Zeolite A has the formula:
Na
12[(Al O
2)
12(SiO
2)
12]. xH
2O
wherein x is from 20 to 30, especially 27. Zeolite X has the formula:
Na
86 [(Al O
2)
86(SiO
2)
106]. 276 H
2O
[0059] Preferred crystalline layered silicates for use herein have the general formula:
NaMSi
xO
2x+1.yH
2O
wherein M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from
0 to 20.
[0060] Crystalline layered sodium silicates of this type are disclosed in
EP-A- 0164514 and methods for their preparation are disclosed in
DE-A-3417649 and
DE-A-3742043. Herein, x in the general formula above preferably has a value of 2, 3 or 4 and is
preferably 2. The most preferred material is 8- Na
2Si
2O
5, available from Hoechst AG as NaSKS-6.
Water-soluble builder
[0061] The particulate composition may comprise a water-soluble builder. Preferably, the
water-soluble builder comprises an alkali or alkaline earth metal salt of phosphate.
Suitable examples of a water-soluble phosphate builders are the alkali metal tripolyphosphates,
sodium, potassium and ammonium pyrophosphate, sodium and potassium and ammonium pyrophosphate,
sodium and potassium orthophosphate, sodium polymeta/phosphate in which the degree
of polymerisation ranges from about 6 to 21, and salts of phytic acid. The builder
may also comprise polycarboxylic acids and salts thereof, preferably citric acid,
alkali metal salts thereof, and combinations thereof.
[0062] The particulate composition may comprise (by weight) from 1% to 40%, more preferably
from 3%, or from 5%, or from 8%, to 25%, to 15%, or to 10% builder.
[0063] BLEACHING AGENT - The particulate composition may comprise one or more bleaching
agents. In general, when a bleaching agent is used, the compositions of the present
invention may comprise from about 0.1% to about 50% or even from about 0.1% to about
25% bleaching agent by weight of the subject detergent composition. When present,
suitable bleaching agents include bleaching catalysts, photobleaches for example Vitamin
K3 and zinc or aluminium phtalocyanine sulfonate; bleach activators such as tetraacetyl
ethylene diamine (TAED) and nonanoyloxybenzene sulphonate (NOBS); hydrogen peroxide;
pre-formed peracids; sources of hydrogen peroxide such as inorganic perhydrate salts,
including alkali metal salts such as sodium salts of perborate (usually mono- or tetra-hydrate),
percarbonate, persulphate, perphosphate, persilicate salts and mixtures thereof, optionally
coated, suitable coatings including inorganic salts such as alkali metal; and mixtures
thereof.
[0064] The amounts of hydrogen peroxide source and peracid or bleach activator may be selected
such that the molar ratio of available oxygen (from the peroxide source) to peracid
is from 1:1 to 35:1, or even 2:1 to 10:1
The adhesive Perfume delivery material
[0065] The product of the invention comprises at least one adhesive perfume delivery material.
The product may comprise from 0.001% to 50%, from 0.01 to 20% or even from 0.1 to
5% by weight of adhesive perfume delivery material(s).
[0066] The product may comprise two or more adhesive perfume delivery material. The perfume
delivery material may be adhered to different parts of the internal wall of the package.
As such, at least one adhesive perfume delivery material may be on top of the product,
whatever the orientation of the product at the time of opening of the product.
[0067] The adhesive perfume delivery material comprises at least one adhesive material.
The adhesive material is suitable to deliver perfumes. The adhesive perfume delivery
material may comprise from 10 to 90%, for example from 15 to 80% or from 20 to 70%
or even from 30 to 60% of adhesive material.
[0068] Before application to the package, the adhesive material may be in the form of a
low-viscosity liquid, a viscous paste, a film, a semisolid or a solid. The adhesive
material may comprise a pressure sensitive adhesive, a hotmelt adhesive, a solution
adhesive and/or a structural adhesive. Preferably, the adhesive material comprises
a hotmelt adhesive.
[0070] The adhesive material may comprise a polymeric material. The adhesive material may
comprise starch, protein, cellulose ether, cellulose ester, natural rubber, synthetic
rubber, polyethylene, polypropylene, poly(vinyl ester), poly(vinyl chloride), poly(vinyl
alcohol), poly(vinyl acetales), (meth)acrylate polymer, poly(vinyl ether), polyvinylpyrrolidone,
polystyrene, polyester, polyurethane, polyisocyannate, epoxy resin, phenolic resin,
resorcinol resins, urea resins, melamine-formaldehyde resins and/or nonreactive resins.
[0071] The adhesive material may comprise a hotmelt adhesive. A hotmelt adhesive is solid
at room temperature (20°C). The hotmelt adhesive is usually heaten to a molten liquid
state, applied hot onto the internal wall of the package and then cooled, adhering
to the package. The application temperature of the hotmelt adhesive is typically between
65°C and 220°C, for example less than 150°C, 100°C, 80°C or even less than 75°C. Typically,
hotmelt adhesives do not undergo chemical changes during the melting process.
[0072] The hotmelt adhesive may comprise a thermoplastic resin or elastomer. The hotmelt
adhesive may comprise an ethylene-vinyl acetate copolymer, an ethylene-ethyl acrylate
copolymers, an amorphous polyefins, a branched polyethylenes, a polypropylene, a polybuene-1,
a phenoxy resin, a polyamide, a polyester, a polyurethane, a styrenic block polymers,
and/or any combination thereof The hotmelt adhesive may comprise a copolymer of ethylene
with at least another monomer comprising at least a heteroatom. A monomer comprising
at least a heteroatom includes all those monomers which comprise at least a C-X linkage
wherein X is not C or H. Said C-X linkage may be a polar linkage. X may be N, S, F,
Cl or O atom.
[0073] The hotmelt adhesive may result of a condensation reaction.
[0074] The adhesive perfume delivery material comprises a perfume. In the sense of the invention,
the term perfume also includes flavours. The adhesive perfume delivery material may
comprise from 10 to 90% or from 20 to 80%, for example from 30 to 70%, by weight of
perfume.
[0075] The perfume may comprise at least one or two, or at least five or even at least ten
perfume component, which are typically blended together to obtain a perfume that has
a particular desired odour. The perfume is typically a selection of perfume component
that are blended together to obtain a particular perfume accord such as a fruity perfume
accord. The perfume can be formulated to provide any olfactory perception that is
desired. For example, the perfume can be a light floral fragrance a fruity fragrance
or a woody or earthy fragrance.
[0076] The perfume component(s) may have an Odour Detection Threshold (ODT) of less than
50 parts per billion (ppb), preferably less than 10ppb. The ODT refers to the value
commonly used in the perfumery arts and is the lowest concentration at which significant
odour detection takes place that the perfume component is present. A method of calculating
ODT is described in
WO97/11151, especially from page 12, line 10 to page 13, line 4.
[0077] Typical perfume components suitable for use are selected from the group consisting
of aldehydes, ketones, esters, alcohols, propionates, salicylates, ethers and combinations
thereof. Typically, the perfume components are liquid, especially at ambient temperature
and pressure. Usually, the perfume components are synthetic molecules. Alternatively,
the perfume components can be derived from animals or plants. Preferred perfume and
perfume components are described in more detail in
WO97/11151, especially from page 8, line 18 to page 11, line 25.
[0078] Typically, the perfume comprises perfume components having a boiling point of less
than 300°C. Typically, the perfume comprises at least 50wt%, more preferably at least
75wt%, of perfume components that have a boiling point of less than 300°C. The perfume
components may have an octanol/water partition coefficient (ClogP) value greater than
1.0. A method of calculating ClogP is described in
WO97/11151, especially from page 11, line 27 to page 12, line 8.
[0079] The adhesive perfume delivery material may also comprise plasticizers, solvents and/or
fillers. The adhesive perfume delivery material, in particular when comprising a hotmelt
adhesive, may also comprise a tackifier and/or a plasticizer. The adhesive perfume
delivery material may comprise from 5 to 60%, for example from 10 to 50%, or from
15 to 40%, by weight of tackifier and/or a plasticizer.
[0080] The tackifier and/or plasticizer may improve the flow of adhesion of the adhesive
perfume delivery material to the package and/or may address migration. The adhesive
perfume delivery material, in particular when comprising a hotmelt adhesive, may comprise
synthetic hydrocarbons, polybutene, natural terpenes, rosins, low molecular weight
polyesters, polyethers, liquid rosin esters, aromatic sulfoamides, phtalates, benzoates,
sucrose esters, derivatives of polyfunctional alcohols (where polyfunctional means
having 2 or more hydroxyl groups), adipates, tartrates sebacates, esters of phosphoric
acid, fatty acids and diacidsm fatty alcohols and diols, and/or mixtures thereof.
The adhesive perfume delivery material, in particular when comprising a hotmelt adhesive,
may comprise one or more wax(es) for example to lower its melt viscosity an/or to
improve the wetting out of the package. The hotmelt adhesive may result of a condensation
reaction.
[0081] The adhesive perfume delivery material may comprise ingredients to improve the processability,
the mechanical characteristics, the tackiness, the resistance to ageing by light,
oxygen and heat, and the visual appearance of the adhesive perfume delivery material.
The adhesive perfume delivery material may comprise copolymers of styrene and at least
one other vinyl or acrylic monomer, copolymers of poly(vinyl alcohol), polyamides,
polyether amide copolymers, polyester amide copolymers, polyesters, polyether ester
copolymers, polyurethanes, polyethers, poly(2- ethyl 2-oxazoline), copolymers of poly(vinyl
pyrrolidone), polyacrylates, copolymers of polyvinyl ethers), and/or mixture thereof.
[0082] The adhesive perfume delivery material may be prepared by techniques well known to
the skilled person. For example, when the adhesive perfume delivery material comprises
a hotmelt adhesive, a perfume, and optionally a plasticizer, can be blended together
as a thermoplastic material. The resulting melt can then be dispersed in water, preferably
at a temperature above its melting point, by mixing. Surfactant and/or stabilizing
systems known to those skilled in the art can be employed to stabilize the resultant
emulsion or dispersion. Alternatively, a preformed aqueous dispersion or emulsion
of a hotmelt adhesive can be blended with a perfume and an optional plasticizer. This
can be done by adding the perfume and the optional plasticizer directly to the hotmelt
adhesive dispersion or emulsion, or by forming an aqueous dispersion of the perfume
and the optional plasticiser and blending this with the hotmelt adhesive dispersion
or emulsion.
[0083] The adhesive perfume delivery material may be applied to an internal wall of the
package by techniques well known to the skilled person. For example, when the adhesive
perfume delivery material comprises a hot melt adhesive, the adhesive perfume delivery
material may be melted at a temperature to have a processable viscosity, pumped through
the length of a hose until it reaches a glue gun or nozzle, and applied to an internal
wall of the package of the product.
The package
[0084] The product of the invention comprises a package at least partially separating the
particulate composition and the perfume delivery material from the external environment.
The package at least partially separates a space inside the package from the external
environment. The space inside the package comprises the particulate composition and
the perfume delivery material. The package may be closed or substantially closed.
The space inside the package, the particulate composition, and the perfume delivery
material may be fully or substantially separated from the external environment. The
package may noticeably reduce the transfers of fluids between the space inside the
package and the external environment. Preferably, the space inside the package and
the external environment are not in fluid communication. The part of the package which
is facing the space inside the package is the internal wall of the package. The part
of the package which is facing the external environment is the external wall of the
package. The adhesive perfume delivery material is adhered to an internal wall of
the package.
[0085] Preferably, the particulate composition and the adhesive perfume delivery material
are in fluid communication inside the package.
[0086] The package may be a bag, for example a bag comprising polyethylene, or a box, for
example a box comprising cardboard, or a bottle. The package may be closed in an air-tight
way. The package may comprise devices to open and/or reclose the package. Devices
to open and/or reclose the package include the cap of a bottle, pivoting wall panels
of a box, hoop and loops fasteners.
[0087] The devices to open and/or reclose the package may be on the upper part of the package.
The adhesive perfume delivery material may be adhered on the upper part of the package.
The upper part of the package may be the part of the package which is not in contact
with the particulate composition when opening the package of the product.
The Process
[0088] As indicated above, the present invention also concerns the process of manufacturing
a product according to the invention comprising at least the two following steps in
any order:
- a- filling of the package with the particulate composition,
- b- adhering the adhesive perfume delivery material onto an internal wall of the package,
wherein the time lapse between step a and step b is of less than 7 days, in particular
of less than 1 day, for example of less than 2 hours.
[0089] The process of manufacturing may also comprise an additional step of closing the
product. The step of closing the product may comprise a gluing step. In particular
if the gluing step involves some adhesive perfume delivery material, in particular
a hotmelt adhesive, as a glue, the gluing step may be carried out at a temperature
that do not substantially modifies the perfume, for example at a temperature of less
than 150°C or 100°C or 80°C.
[0090] The product, for examples two top lids of a cardboard box, may be glued with part
of the adhesive perfume delivery material.
Measurement of the odour intensity
[0091] To compare the odour intensity of two samples the odour intensity may be measured
using a vapour analysis system.
[0092] The headspace of each sample may be collected via a Z Nose 4200 vapour analysis system
from Electronic sensor technology (Newbury Park, CA, USA) using the method described
in exercice 1 from the Znose training manual for example version dated 6/5/2007.
[0093] The dimensions and values disclosed herein are not to be understood as being strictly
limited to the exact numerical values recited. Instead, unless otherwise specified,
each such dimension is intended to mean both the recited value and a functionally
equivalent range surrounding that value. For example, a dimension disclosed as "40
mm" is intended to mean "about 40 mm".
[0094] The following examples are given by way of illustration only and therefore should
not be construed to limit the scope of the invention.
EXAMPLES
Example 1: Particulate compositions
[0095] The following particulate compositions are prepared.
|
1A (wt%) |
1B (wt%) |
1C (wt%) |
1D (wt%) |
1E (wt%) |
1F (wt%) |
Linear alkylbenzenesulfonate |
20 |
12 |
20 |
10 |
12 |
13 |
Other surfactants |
1.6 |
1.2 |
1.9 |
3.2 |
0.5 |
1.2 |
Phosphate builder(s) |
5 |
25 |
4 |
3 |
2 |
|
Zeolite |
|
1 |
|
1 |
4 |
1 |
Silicate |
4 |
5 |
2 |
3 |
3 |
5 |
Sodium Carbonate |
9 |
20 |
10 |
17 |
5 |
23 |
Polyacrylate (MW 4500) |
1 |
0.6 |
1 |
1 |
1.5 |
1 |
Carboxymethylcelulose |
1 |
0.3 |
0.3 |
0.1 |
1.1 |
0.9 |
enzymes |
0.33 |
0.17 |
0.6 |
0.2 |
0.5 |
0.7 |
Fluorescent Brightener(s) |
0.16 |
0.06 |
0.16 |
0.18 |
0.16 |
0.16 |
Diethylenetriamine pentaacetic acid or Ethylene diamine tetraacetic acid |
0.6 |
|
0.6 |
0.25 |
0.6 |
0.6 |
MgSO4 |
1 |
1 |
1 |
0.5 |
1 |
1 |
Bleach(es) and Bleach activator(s) |
6.88 |
|
6.12 |
2.09 |
1.17 |
4.66 |
Sulfate/Moisture/perfume |
Balance |
Balance |
Balance |
Balance |
Balance |
Balance |
Total |
100 |
100 |
100 |
100 |
100 |
100 |
[0096] Those compositions 1A-1F comprise more than 60% by weight of the particulate composition
of particles having a size of above 150 µm.
Example 2: Preparation of an adhesive perfume delivery material
[0097] 24.75 parts of Elvax
® 250, a poly(ethylene-co-vinyl acetate) with a vinyl acetate content of 28 wt% and
a melt flow index of 25 dg/min (ASTM D1238), available from Dupont, 9.75 parts of
EscoreneTM Ultra MV 02528, a poly(ethylene-co-vinyl acetate) with a vinyl acetate
content of 27.5 wt% and a melt viscosity at 190°C of 3100 cps (ExxonMobil method),
available from ExxonMobil Chemical, 15 parts of ForalynTM 5020F, a rosin ester plasticiser
available from Eastman Chemical and 0.5 parts of IrganoxTM B225, an antioxidant available
from Ciba Geigy (Switzerland) are added to a sigma blade mixer and heated to a temperature
of about 10- 20 °C above the melting point of the polymer (about 120 °C). The ingredients
are mixed until a homogeneous mass was obtained. The temperature is then reduced to
a point where the mixture is still molten, typically to about 10-20 °C above the melting
point of the mixture (about 80 °C in the present case). 50 parts of benzyl acetate,
a perfume material available from Sigma Aldrich, is added to the plasticised polymer
mixture. The ingredients are mixed until a homogeneous mixture is obtained, and the
resultant material is removed from the mixer, cooled to room temperature and is used
as an adhesive perfume delivery material (hot melt adhesive).
Example 3: Product according to the invention
[0098] A cardboard box (approximatively 21cm x14.5cm x 5.5cm) is filed with about 950 g
of the particulate composition of example 1.
The hotmelt adhesive of example 2 is applied with a hot melt applicator on the internal
wall of the top panel of the cardboard box.
The package is sealed by gluing the two top lids of the cardboard box.