[0001] This application claims the benefit of Japanese Patent Applications No.
2007-135108 and No.
2008-082712 which are hereby incorporated by reference.
BACKGROUND OF THE INVENTION
Field of the Invention
[0002] This invention relates to hair for toys. More particularly, it relates to hair for
toys which has a function that a condition of hairs transformed into any desired shape
upon application of water is fixed in a dry condition.
Related Background Art
[0003] As toy hairs which are changeable in shape, those which make use of a shape memory
alloy are disclosed (see, e.g., Japanese Patent Application Laid-open No.
62-137086). Such hairs return to the shape the alloy has memorized, when heated after they
have been transformed into any desired shape, but can not have any soft feeling because
the hair is made of a metal.
[0004] Hair making use of a shape memory resin is also disclosed (see, e.g., Japanese Patent
Application Laid-open No.
2-141498). It, however, is difficult to make the resin have fiber (filament)-forming properties,
and also such a resin has had a poor function to retain the shape-transformed condition,
being so poor as not to satisfy properties as toys.
[0005] As a means for resolving such a problem, hair for toys is disclosed which has a function
that hairs can be transformed into arbitrary shapes upon heating by hand touching
or the like, the shape-transformed condition can be fixed by cooling and the fixed
shape can be restored to an original condition or transformed into different shapes
(see, e.g.,
U.S. Patent No. 5,895,718). This hair is, taking account of convenience, preferably so made up as to be heated
to a temperature around the body heat to transform hairs, but has a nature that the
hairs return to an original shape with lapse of time even after they have been transformed.
Thus, it has been difficult to retain the shape-transformed condition for a long time.
SUMMARY OF THE INVENTION
[0006] Accordingly, the present invention aims to provide hair for toys which is rich in
convenience, having a function that hairs (filaments) can be transformed into arbitrary
shapes upon application of water, the shape-transformed condition can be fixed over
a long period of time by drying and the fixed shape can optionally be restored to
an original condition or transformed into different shapes.
[0007] The present invention requires that it is hair for toys which comprises hair constituted
of filaments made of a resin, where the resin comprises an alcohol-soluble resin.
[0008] The present invention may further require that the alcohol-soluble resin is contained
in the resin in an amount of 10% by mass or more; that it is hair for toys which comprises
hair constituted of filaments made of a composite resin made up of a core and a sheath,
where the resin of the core and/or that of the sheath comprise(s) an alcohol-soluble
resin; that the resin of the core is a resin capable of undergoing plastic deformation
at a temperature of 50°C or less and the resin of the sheath is an alcohol-soluble
resin; that the resin of the core is a resin in which a thermoplastic resin (A) and
a thermoplastic polymer (B) having glass transition temperature within the range of
from 0°C to 50°C have been melted in an integral form in a proportion of (A):(B) of
from 95:5 to 1:99; that the resin of the core is a shape memory resin; that the alcohol-soluble
resin is contained in the resin of the sheath in an amount of 1% by mass or more;
that the alcohol-soluble resin is an alcohol-soluble nylon; that the alcohol-soluble
nylon is a copolymer nylon containing at least nylon 6,6; and that the alcohol-soluble
nylon is any of a multi-copolymer nylon containing at least nylon 6 and nylon 6,6,
a multi-copolymer nylon containing at least nylon 6, nylon 6,6 and nylon 610 and a
multi-copolymer nylon containing at least nylon 6, nylon 6,6, nylon 610 and nylon
12.
[0009] The present invention can provide hair for toys which has such repeatable play performance
that hairs (filaments) can be transformed into arbitrary shapes upon application of
water, the shape-transformed condition can be fixed over a long period of time by
drying and the shape-transformed hairs (filaments) can optionally be restored to an
original condition or transformed into different shapes.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0010] The filaments made of a resin that make up the hair for toys of the present invention
are formed of a resin containing at least an alcohol-soluble resin.
[0011] As the alcohol-soluble resin, a thermoplastic alcohol-soluble nylon may preferably
be used, which has superior fiber (filament)-forming properties. In particular, among
alcohol-soluble nylons, a copolymer nylon containing at least nylon 6,6, a multi-copolymer
nylon containing at least nylon 6 and nylon 6,6, a multi-copolymer nylon containing
at least nylon 6, nylon 6,6 and nylon 610 and a multi-copolymer nylon containing at
least nylon 6, nylon 6,6, nylon 610 and nylon 12 do not make use of any harmful substance
such as formalin, and hence can secure a high safety when they are produced or used.
[0012] As the resin for making up the filaments, the alcohol-soluble resin may be used alone,
or the alcohol-soluble resin and a resin different from the alcohol-soluble resin
may also be used in the form of a blend. Such resin different from the alcohol-soluble
resin may preferably be a resin having fiber (filament)-forming properties, and may
include thermoplastic resins such as polyamide resin, polyester resin and polyolefin
resin.
[0013] The polyamide resin may be exemplified by nylon 6, nylon 6,6, nylon 6,9, nylon 11,
nylon 12, copolymer nylon 6-12, copolymer nylon 6,9-12, and polyamide elastomers.
The polyester resin may be exemplified by polyhexamethylene terephthalate, polyethylene
terephthalate, polybutylene terephthalate, saturated aliphatic polyesters, and polyester
elastomers. The polyolefin resin may be exemplified by low-density polyethylene, linear
low-density polyethylene, high-density polyethylene, polypropylene, a polypropylene-ethylene
copolymer, polyisobutylene, polybutadiene, and ethylenepropylene rubber. Any of these
may be used alone or in combination.
[0014] In the case when a different resin is blended, the alcohol-soluble resin may be contained
in the resin in an amount of 10% by mass or more, preferably 30% by mass or more,
and more preferably 50% by mass or more. This enables satisfaction of how well the
filaments are transformed upon application of water and how well the shape-transformed
condition can be fixed by drying.
[0015] The filaments made up as described above are produced in the form of multi-filaments
by melt spinning making use of a melt spinning machine. This is because a bundle of
filaments (fibers) can be made up in such a form that they are readily continuously
set in doles or animal-shaped toys by means of a setting machine.
[0016] Here, the filaments may be circular in their cross sections or, without limitation
thereto, be star-shaped, Y-shaped or of any other different shape, any of which may
appropriately be selected depending on the feel, the bulkiness, the curl workability
and so forth.
[0017] The filaments may each preferably have outer diameter within the range of from 30
µm to 200 µm, and more preferably from 40 µm to 120 µm. Those having an outer diameter
of less than 30 µm are so thin as to have poor shape retention after they have come
transformed. On the other hand, those having an outer diameter of more than 200 µm
are so thick as to show the property of hair with difficulty.
[0018] The filaments may easily stick together when they are left in the state of being
lapped over one another, depending on the types of the alcohol-soluble resin to be
used or of the resin to be blended. In order to prevent this, the filaments may be
those having the form of core-sheath type composite filaments.
[0019] Stated specifically, they are composite filaments (fibers) of a core-sheath type
in which the resin containing the alcohol-soluble resin forms the core and a resin
which is so composed that the filaments can not easily stick to one another is so
joined as to surround the core in the shape of a sheath. In this case, the resin that
forms the sheath is required to have water permeability.
[0020] Further, where the filaments can not easily stick together in the state they are
lapped over one another, depending on the types of the alcohol-soluble resin to be
used or of the resin to be blended, what may be obtained are composite filaments (fibers)
of a core-sheath type in which a resin containing no alcohol-soluble resin forms the
core and the resin containing the alcohol-soluble resin is so joined as to surround
the core in the shape of a sheath, and composite filaments (fibers) of a core-sheath
type in which the resin containing the alcohol-soluble resin forms the core and the
resin containing the alcohol-soluble resin is so joined as to surround the core in
the shape of a sheath. Such make-up enables the alcohol-soluble resin to be contained
in a smaller quantity than that in the case of single-phase filaments.
[0021] The alcohol-soluble resin to be contained in the core-sheath type composite filaments
may preferably be contained in an amount of 30% by mass or more, and more preferably
50% by mass or more. This enables satisfaction of how well the filaments are transformed
upon application of water and how well the shape-transformed condition can be fixed
by drying.
[0022] To the filaments, a usual pigment, a fluorescent pigment, a thermochromic microcapsule
pigment, a photochromic material or the like may be added to obtain filaments with
various color tones.
[0023] The thermochromic microcapsule pigment may effectively be a pigment obtained by enclosing
in microcapsules a reversibly thermochromic composition containing three components,
an electron-donating color-developing organic compound, an electron-accepting compound
and an organic compound medium which causes color-developing reaction reversibly.
[0024] As the microcapsules, those having particle diameter within the range of from 1 µm
to 30 µm, and preferably from 5 µm to 15 µm may be used, which may be incorporated
in the resin in an amount of from 0.5% by mass to 40% by mass, and preferably from
1% by mass to 30% by mass. If they are mixed in an amount of less than 0.5% by mass,
it is difficult to make any sharp thermochromic effect visible. If they are in an
amount of more than 40% by mass, they are in excess, and may cause aftercolor when
the pigment is in a color extinguished state.
[0025] The photochromic material may effectively be a photochromic compound such as a spiroxazine
type compound, a spiropyran type compound or a diarylethene type compound.
[0026] Further, a general-purpose plasticizer of various types, as exemplified by phthalic
acid type, aliphatic dibasic ester type, phosphoric ester type, epoxy type, phenol
type and trimellitic acid type compounds, may be mixed so as to provide the filaments
with flexibility. calcium carbonate, magnesium carbonate, titanium oxide, talc or
the like may also be added in order to improve workability, physical properties and
so forth.
[0027] The present invention provides hair for toys which has a function that, as described
above, filaments can be shape-transformed upon application of water while showing
flexibility, and the shape can be retained by drying the shape-transformed filaments
as they stand fixed to the desired shape, where the shape transformation and fixation
can be achieved by a simple method, i.e., by the application of water, and further
the filaments having retained that shape can be released from their fixed shape upon
application of water so as to be transformed into, and fixed to, any desired different
shapes, thus having the utility of repeatability.
[0028] The filaments are shape-transformed upon application of water while showing their
flexibility, and the shape into which the filaments have been transformed is fixed
upon drying. This is presumed to be due to the fact that the alcohol-soluble resin
is so rich in hydrophilicity that the filaments may come to loose its crystalline
structure upon absorption of water and come to have a low modulus in flexure while
keeping their flexibility, and the filaments come again crystallized upon drying to
increase in the modulus in flexure, where the shape-transformed condition of the filaments
is retained while keeping them hardened.
[0029] Further, the hair for toys of the present invention has such play performance that,
after its filaments have been transformed into a desired shape, water is applied thereto,
whereupon this shape can be retained even when a fixture is removed before drying.
This is presumed to be due to the fact that the filaments absorbs water in the state
a strain coming from stress is applied thereto, whereupon they come shifted to the
direction where the molecules relax the strain, so that the shape into which the filaments
have been transformed can be retained.
[0030] Of the above core-sheath type composite filaments, composite filaments the resin
of the core of which is a resin capable of undergoing plastic deformation at a temperature
of 50°C or less and the resin of the sheath of which is an alcohol-soluble resin has
such repeatable play performance that the filaments can be transformed into arbitrary
shapes upon application of water, the shape-transformed condition can be fixed before
drying and at the same time the shape-transformed condition can be fixed over a longer
period of time by drying, and the shape-transformed filaments (hairs) can optionally
be restored to an original condition or transformed into different shapes.
[0031] The resin that makes up the core is formed of the resin capable of undergoing plastic
deformation at a temperature of 50°C or less. Such a resin may include a resin made
up of a thermoplastic resin (A) and a thermoplastic polymer (B) having glass transition
temperature within the range of from 0°C or more to 50°C or less, which resins have
been melted in an integral form in a proportion of (A):(B) of from 95:5 to 1:99.
[0032] The thermoplastic resin (A) may include polymers selected from any of polyamide type
thermoplastic elastomers including polyamide resins such as nylon 6, nylon 6,6, nylon
12, nylon 6,9, nylon 612, copolymer nylon 6-6,6, copolymer nylon 6-12, copolymer nylon
6-6,6-12 and copolymer nylon 6,9-12, polyester resins such as polyethylene terephthalate
and polybutylene terephthalate, acrylonitrile-styrene copolymer resin, acrylonitrile-
butadiene-styrene copolymer resin, polycarbonate resin, vinylidene chloride-vinyl
chloride copolymer resin, copolymer acrylonitrile resin and polyamide-polyether block
copolymer resin; styrene type thermoplastic elastomers such as styrene-butadiene block
copolymer resin; polyolefin type thermoplastic elastomers such as polypropylene-ethylene
propylene rubber block copolymer resin; polybutadiene type thermoplastic elastomers;
polyester type thermoplastic elastomers; and thermoplastic elastomers such as ethylene-vinyl
acetate type copolymers.
[0033] In order to retain graceful flexibility over a long period of time, it is desirable
to use the thermoplastic elastomer, where the filaments are prevented from loosing
their gracefulness with time to become hard in quality.
[0034] The thermoplastic polymer (B) may include saturated polyester resins, acrylate resins,
methacrylate resins, vinyl acetate resins, polyamide resins, epoxy resins (uncured
products), hydrocarbon resins, soft vinyl chloride resins, ethylene-vinyl acetate
copolymer resins, vinyl chloride-vinyl acetate copolymer resins, vinyl chloride-acrylate
copolymer resins, styrene resins, and acrylatestyrene copolymer resins.
[0035] Of the above thermoplastic polymer (B), those having a glass transition temperature
of from 0°C or more to 50°C or less, preferably from 10°C to 50°C, more preferably
from 20°C to 40°C, and still more preferably from 30°C to 40°C, are effective. In
particular, saturated polyester resins, acrylate resins, vinyl chloride-vinyl acetate
copolymer resins and styrene resins are preferred.
[0036] Any thermoplastic polymer (B) having glass transition temperature within the above
range may be selected, and this enables the hair for toys to have such function that
the hairs (filaments) are transformed into arbitrary shapes by heating it at temperature
within living temperatures, or the vicinity thereof, or by using a known hairstyle
transforming jig or any appropriate stress-providing transforming means, and the shape-transformed
condition is retained, and enables infants and so forth to play while changing hairstyles
simply and easily.
[0037] Here, the thermoplastic polymer (B) is selected from polymers having chemical structure
different from the thermoplastic resin (A), where a state in which the thermoplastic
polymer (B) is dispersed in the thermoplastic resin (A) or a state in which the former
is dispersed in and compatibilized with the latter mixedly brings out the above function
effectively.
[0038] The thermoplastic resin (A) and the thermoplastic polymer (B) may effectively be
blended in a proportion of (A):(B) of from 95:5 to 1:99 (mass ratio), preferably from
90:10 to 1:99, and more preferably from 90:10 to 10:90. A system in which the thermoplastic
polymer (B) is less than 5% by mass may insufficiently make the filaments operate
in virtue of their coming to have a low modulus in flexure when treated to be transformed.
[0039] Here, the thermoplastic resin (A) and the thermoplastic polymer (B) may each be used
not alone but in combination of two or more.
[0040] As the resin capable of undergoing plastic deformation at a temperature of 50°C or
less, a shape memory resin may be used which is chiefly composed of polyurethane resin,
polyester resin, polyolefin resin, vinyl chloride resin, styrene-butadiene copolymer
resin, polynorbornene resin, crystalline diene copolymer resin, fluorine resin, polyisoprene
resin or the like.
[0041] The resin capable of undergoing plastic deformation at a temperature of 50°C or less
may further include thermoplastic resins such as polyolefin resin, acrylate resin,
methacrylate resin, polyester resin, polyamide resin, vinyl acetate resin, ethylene-vinyl
acetate copolymer resin, vinyl chloride resin, vinylidene chloride resin and chlorinated
polyolefin resin; and thermoplastic elastomers such as polyolefin, styrene, polyester,
polyurethane, polyamide and polybutadiene, any of which may be used.
[0042] As the resin that makes up the sheath, the alcohol-soluble resin described previously
may be used, and a resin different from the alcohol-soluble resin may further be used
in the form of a blend. In the case when such a different resin is used, the alcohol-soluble
resin may be contained in the resin in an amount of 1% by mass or more, preferably
5% by mass or more, and more preferably 10% by mass or more. This enables satisfaction
of how well the filaments are transformed upon application of water and how well the
shape-transformed condition can be fixed by drying.
[0043] Here, where an alcohol-soluble nylon is used as the alcohol-soluble resin, the different
resin to be used in combination may preferably be a copolymer polyamide resin. This
is because the resin has a good compatibility because of the like polyamide structure
and at the same time the resin blended has a high water absorption and a superior
flexibility.
[0044] In the composite filaments (fibers) made up as described above, the resin (core)
capable of undergoing plastic deformation at a temperature of 50°C or less is covered
with the alcohol-soluble resin (sheath). Hence, the composite filaments have such
function that the filaments are transformable into arbitrary shapes upon application
of water, where, before drying, the shape-transformed condition can be fixed unless
any external force is applied, in virtue of the core resin capable of undergoing plastic
deformation at a temperature of 50°C or less, and the condition in which the filaments
have been transformed into a shape like that of permanent waves is permanently fixed
upon drying of the sheath resin.
[0045] Further, the hair for toys is provided in which the hairs (filaments) having retained
that shape can be released from their fixed shape upon application of water so as
to be transformed into, and fixed to, any desired different shapes, thus having the
utility of repeatability.
[0046] Thus, the composite filaments (hairs) made up as described above have the function
to maintain over a long period of time the shape brought by their transformation which
function is superior to that of hairs made up of single-phase filaments formed of
the resin capable of undergoing plastic deformation at a temperature of 50°C or less,
and also have the function to maintain the shape brought immediately after their transformation
which function is superior to that of hairs made up of single-phase filaments formed
of any resin with which the shape-transformed condition brought upon absorption of
water can be retained by drying.
EXAMPLES
[0047] The hair for toys of the present invention is described below in greater detail by
giving Examples. The present invention is by no means limited by these Examples. Formulation
in Examples is shown as part(s) by mass.
Example 1
Production of hair for toys:
[0048] 99 parts of terpolymer nylon 6-6,6-610 as an alcohol-soluble resin and 1 part of
a brown colorant were mixed, and the mixture obtained was spun at 180°C from spinning
dies having 24 ejection orifices, by using a general-purpose melt spinning machine,
followed by stretching to obtain brown multi-filaments (hair for toys) made up of
24 filaments of about 80 µm each in diameter.
Production of doll:
[0049] The multi-filaments thus obtained were set in a head of a doll, made of a plastic
material, by a known means and then this head was combined with a trunk to obtain
a doll.
[0050] Water was applied to the hair of the doll by using a sprayer, and this hair was coiled
around a cylindrical hair curler of 9 mm in diameter and then dried. Thereafter, the
curler was removed, whereupon the hair came to stand curled in the same diameter as
the curler, and this shape was retainable over a long period of time like that of
permanent waves.
[0051] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight.
[0052] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0053] The doll hair standing dried was also coiled around a cylindrical hair curler of
9 mm in diameter. Thereafter, water was applied thereto by using a sprayer, whereupon
the hair came to stand curled in the same diameter as the curler even when the curler
was removed in the state the hair was undried. This hair was dried as it was, whereupon
it came to have the same hardness as that before the water was applied, and this shape
was retainable over a long period of time like that of permanent waves.
Example 2
Production of hair for toys:
[0054] 10 parts of tetrapolymer nylon 6-6,6-610-12 as an alcohol-soluble resin, 89 parts
of copolymer nylon 6-12 as a resin different from the alcohol-soluble resin and 1
part of a brown colorant were mixed, and the mixture obtained was spun at 180°C from
spinning dies having 24 ejection orifices, by using a general-purpose melt spinning
machine, followed by stretching to obtain brown multi-filaments (hair for toys) made
up of 24 filaments of about 80 µm each in diameter.
Production of doll:
[0055] The multi-filaments thus obtained were set in a head of a doll, made of a plastic
material, by a known means and then this head was combined with a trunk to obtain
a doll.
[0056] Water was applied to the hair of the doll by using a sprayer, and this hair was coiled
around a cylindrical hair curler of 9 mm in diameter and then dried. Thereafter, the
curler was removed, whereupon the hair came to stand curled in the same diameter as
the curler, and this shape was retainable over a long period of time like that of
permanent waves.
[0057] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight.
[0058] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0059] The doll hair standing dried was also coiled around a cylindrical hair curler of
9 mm in diameter. Thereafter, water was applied thereto by using a sprayer, whereupon
the hair came to stand curled in the same diameter as the curler even when the curler
was removed in the state the hair was undried. This hair was dried as it was, whereupon
it came to have the same hardness as that before the water was applied, and this shape
was retainable over a long period of time like that of permanent waves.
Example 3
Preparation of reversibly thermochromic microcapsule pigment:
[0060] A reversibly thermochromic composition made up of 2 parts of 1,2-benz-6-diethylaminofluorane,
6 parts of 1,1-bis(4-hydroxyphenyl)-n-octane and 50 parts of stearyl caprate was made
into microcapsules by epoxy resin/amine interfacial polymerization to obtain a reversibly
thermochromic microcapsule pigment of 10 to 20 µm in average particle diameter.
[0061] The microcapsule pigment obtained was colorless at 34°C or more and came reversibly
changed into pink color at 28°C or less.
Production of hair for toys:
[0062] 3 parts of the microcapsule pigment and 97 parts of terpolymer nylon 6-6,6-610 as
an alcohol-soluble resin were mixed, followed by melt-mixing at 180°C by means of
an extruder to obtain a reversibly thermochromic resin composition.
[0063] The reversibly thermochromic resin composition obtained was colorless at 34°C or
more and came reversibly changed into pink color at 28°C or less.
[0064] Then, this resin composition was spun at 180°C from spinning dies having 24 ejection
orifices, by using a general-purpose melt spinning machine, followed by stretching
to obtain multi-filaments (hair for toys) made up of 24 filaments of about 80 µm each
in diameter.
Production of doll:
[0065] The multi-filaments thus obtained were set in a head of a doll, made of a plastic
material, by a known means and then this head was combined with a trunk to obtain
a doll.
[0066] The hair of the doll took on pink in an environment of a room temperature of 25°C,
where water was applied thereto by using a sprayer, and this hair was put between
corrugated plates having ridges at intervals of 10 mm and then dried. Thereafter,
the plates were removed, whereupon the hair came to stand waved in the same shape
as the corrugated plates, and this shape was retainable over a long period of time
like that of permanent waves.
[0067] Next, water was again applied to the hair standing waved, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight.
[0068] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
Example 4
Production of hair for toys:
[0069] As a core material 100 parts of an alcohol-soluble resin tetrapolymer nylon 6-6,6-610-12
and as a sheath material a mixture of 99 parts of a polyamide elastomer with a shore
hardness of 55 and 1 part of a brown colorant were used, and these were spun at 200°C
from spinning dies having 18 ejection orifices, by using a composite filament spinning
machine and in such a way that the core/sheath ratio came to be 6/4, to obtain composite
filaments (hair for toys) having core/sheath structure, of 70 µm each in diameter.
Production of doll:
[0070] The composite filaments thus obtained were set in a head of a doll, made of a plastic
material, by a known means and then this head was combined with a trunk to obtain
a doll.
[0071] Water was applied to the hair of the doll by using a sprayer, and this hair was coiled
around a cylindrical hair curler of 9 mm in diameter and then dried. Thereafter, the
curler was removed, whereupon the hair came to stand curled in the same diameter as
the curler, and this shape was retainable over a long period of time like that of
permanent waves.
[0072] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight.
[0073] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0074] The doll hair standing dried was also coiled around a cylindrical hair curler of
9 mm in diameter. Thereafter, water was applied thereto by using a sprayer, whereupon
the hair came to stand curled in the same diameter as the curler even when the curler
was removed in the state the hair was undried. This hair was dried as it was, whereupon
it came to have the same hardness as that before the water was applied, and this shape
was retainable over a long period of time like that of permanent waves.
Example 5
Production of hair for toys:
[0075] As a core material a mixture of 99 parts of linear low-density polyethylene and 1
part of a brown colorant, as a sheath material a mixture of 10 parts of an alcohol-soluble
resin terpolymer nylon 6-6,6-610 and 89 parts of copolymer nylon 6-12 as a resin different
from the alcohol-soluble resin were used, and these were spun at 180°C from spinning
dies having 18 ejection orifices, by using a composite filament spinning machine and
in such a way that the core/sheath ratio came to be 5/5, to obtain composite filaments
(hair for toys) having core/sheath structure, of 90 µm each in diameter.
Production of doll:
[0076] The composite filaments thus obtained were set in a head of a doll, made of a plastic
material, by a known means and then this head was combined with a trunk to obtain
a doll.
[0077] Water was applied to the hair of the doll by using a sprayer, and this hair was coiled
around a cylindrical hair curler of 9 mm in diameter and then dried. Thereafter, the
curler was removed, whereupon the hair came to stand curled in the same diameter as
the curler, and this shape was retainable over a long period of time like that of
permanent waves.
[0078] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight.
[0079] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0080] The doll hair standing dried was also coiled around a cylindrical hair curler of
9 mm in diameter. Thereafter, water was applied thereto by using a sprayer, whereupon
the hair came to stand curled in the same diameter as the curler even when the curler
was removed in the state the hair was undried. This hair was dried as it was, whereupon
it came to have the same hardness as that before the water was applied, and this shape
was retainable over a long period of time like that of permanent waves.
Example 6
Production of hair for toys:
[0081] 60 parts of copolymer polyamide resin (melting point: 155°C) as a thermoplastic resin
(A), as a thermoplastic resin (B) 39 parts of polyester resin having a glass transition
temperature of 36°C, and 1 part of a brown colorant were mixed to obtain a resin for
making up the core.
[0082] Meanwhile, 100 parts of an alcohol-soluble resin (terpolymer nylon 6-6,6-610) was
obtained as a resin for making up the sheath.
[0083] The resin for making up the core and the resin for making up the sheath were fed
to a core-forming extruder and a sheath-forming extruder, respectively, and these
were spun at 190°C from spinning dies having 20 ejection orifices, by using a composite
filament spinning machine and in such a way that the core/sheath ratio came to be
5/5 (volume ratio), to obtain brown hair for toys (composite filaments) made up of
20 filaments of 90 µm each in diameter.
Production of doll:
[0084] The hair for toys thus obtained was set in a head of a doll, made of a plastic material,
by a known means and then this head was joined with a trunk to obtain a doll.
[0085] This hair of the doll had rigidity, and was unable to be curled by merely coiling
it around a hair curler. Water was applied to this hair by using a sprayer, whereupon
the hair came to have flexibility to come plastically deformable.
[0086] Further, this hair was heated to 36°C or more by hand touching, whereupon the hair
came more flexible. In this state, the hair was coiled around a cylindrical hair curler
of 9 mm in diameter and then dried. Thereafter, the curler was removed, whereupon
the hair came to stand curled in the same diameter as the curler, and this shape was
retainable over a long period of time like that of permanent waves.
[0087] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight. Here, the hair was heated to 36°C or more by
hand touching, whereupon the hair was readily able to return to the one standing straight.
[0088] Incidentally, where the water is applied to the hair, then the hair is coiled around
the curler and thereafter the curler is removed before the hair is dried, the hair
comes to stand curled in the same diameter as the curler unless any external force
is applied, and the condition where it stands curled upon drying is retainable over
a long period of time. Thus, the hair can satisfy such play performance that it is
curled without relying on drying.
[0089] Further, where the water is applied to the hair, then the hair is coiled around the
curler and thereafter the curler is removed before the hair is dried, the hair standing
thus curled may be brushed in that state while extending it in straight lines, whereupon
the hair can be made to return to the initial one standing straight.
[0090] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0091] The doll hair may also, after water has been applied thereto, be coiled around a
hair curler to curl the hair. Besides, the hair standing dried may be coiled around
a hair curler and thereafter water may be applied to curl the hair.
Example 7
Production of hair for toys:
[0092] 70 parts of a polyamide elastomer (melting point: 160°C) as a thermoplastic resin
(A), as a thermoplastic resin (B) 29 parts of a 3:1 mixture of a polyester resin having
a glass transition temperature of 40°C and a polyester resin having the same of -20°C
(Tg after mixing: 25°C), and 1 part of a black colorant were mixed to obtain a resin
for making up the core.
[0093] Meanwhile, 10 parts of an alcohol-soluble resin (terpolymer nylon 6-6,6-610) and
90 parts of a resin (copolymer nylon 6-12) different from the alcohol-soluble resin
were mixed to obtain a resin for making up the sheath.
[0094] The resin for making up the core and the resin for making up the sheath were fed
to a core-forming extruder and a sheath-forming extruder, respectively, and these
were spun at 190°C from spinning dies having 20 ejection orifices, by using a composite
filament spinning machine and in such a way that the core/sheath ratio came to be
8/2 (volume ratio), to obtain black hair for toys (composite filaments) made up of
20 filaments of 90 µm each in diameter.
Production of doll:
[0095] The hair for toys thus obtained was set in a head of a doll, made of a plastic material,
by a known means and then this head was joined with a trunk to obtain a doll.
[0096] This hair of the doll had rigidity, and was unable to be curled by merely coiling
it around a hair curler. Water was applied to this hair by using a sprayer, whereupon
the hair came to have flexibility to come plastically deformable.
[0097] Further, this hair was heated to 25°C or more by hand touching, whereupon the hair
came more flexible. In this state, the hair was coiled around a cylindrical hair curler
of 9 mm in diameter and then dried. Thereafter, the curler was removed, whereupon
the hair came to stand curled in the same diameter as the curler, and this shape was
retainable over a long period of time like that of permanent waves.
[0098] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight. Here, the hair was heated to 25°C or more by
hand touching, whereupon the hair was readily able to return to the one standing straight.
[0099] Incidentally, where the water is applied to the hair, then the hair is coiled around
the curler and thereafter the curler is removed before the hair is dried, the hair
comes to stand curled in the same diameter as the curler unless any external force
is applied, and the condition where it stands curled upon drying is retainable over
a long period of time. Thus, the hair can satisfy such play performance that it is
curled without relying on drying.
[0100] Further, where the water is applied to the hair, then the hair is coiled around the
curler and thereafter the curler is removed before the hair is dried, the hair standing
thus curled may be brushed in that state while extending it in straight lines, whereupon
the hair can be made to return to the initial one standing straight.
[0101] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0102] The doll hair may also, after water has been applied thereto, be coiled around a
hair curler to curl the hair. Besides, the hair standing dried may be coiled around
a hair curler and thereafter water may be applied to curl the hair.
Example 8
Preparation of reversibly thermochromic microcapsule pigment:
[0103] A reversibly thermochromic composition made up of 2 parts of 1,2-benz-6-diethylaminofluorane,
6 parts of 1,1-bis(4-hydroxyphenyl)-n-octane and 50 parts of stearyl caprate was made
into microcapsules by epoxy resin/amine interfacial polymerization to obtain a reversibly
thermochromic microcapsule pigment of 10 to 20 µm in average particle diameter.
[0104] The microcapsule pigment obtained was colorless at 34°C or more and came reversibly
changed into pink color at 28°C or less.
Production of hair for toys:
[0105] 3 parts of the microcapsule pigment, 60 parts of a copolymer polyamide resin (melting
point: 155°C) as a thermoplastic resin (A) and as a thermoplastic resin (B) 37 parts
of a polyester resin having a glass transition temperature of 36°C were mixed to obtain
a resin for making up the core.
[0106] Meanwhile, 100 parts of an alcohol-soluble resin (terpolymer nylon 6-6,6-610) was
obtained as a resin for making up the sheath.
[0107] The resin for making up the core and the resin for making up the sheath were fed
to a core-forming extruder and a sheath-forming extruder, respectively, and these
were spun at 190°C from spinning dies having 20 ejection orifices, by using a composite
filament spinning machine and in such a way that the core/sheath ratio came to be
5/5 (volume ratio), to obtain hair for toys (composite filaments) made up of 20 filaments
of 90 µm each in diameter.
[0108] The filaments were colorless at 34°C or more and came reversibly changed into pink
color at 28°C or less.
Production of doll:
[0109] The hair for toys thus obtained was set in a head of a doll, made of a plastic material,
by a known means and then this head was joined with a trunk to obtain a doll.
[0110] This hair of the doll took on pink in an environment of a room temperature of 25°C
and had rigidity, and this was unable to be curled by merely coiling it around a hair
curler. Water was applied to this hair by using a sprayer, whereupon the hair came
to have flexibility to come plastically deformable.
[0111] Further, this hair was heated to 36°C or more by hand touching, whereupon the hair
came more flexible and at the same time turned colorless. In this state, the hair
was put between corrugated plates having ridges at intervals of 10 mm and then dried.
Thereafter, the plates were removed, whereupon the hair came to stand waved in the
same shape as the corrugated plates, and this shape was retainable over a long period
of time like that of permanent waves.
[0112] Next, water was again applied to the hair standing waved, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight. Here, the hair was heated to 36°C or more by
hand touching, whereupon the hair turned colorless and at the same time was readily
able to return to the one standing straight.
[0113] Incidentally, where the water is applied to the hair, then the hair is put between
corrugated plates and thereafter the corrugated plates are removed before the hair
is dried, the hair comes to stand waved in the same shape as the corrugated plates
unless any external force is applied, and the condition where it stands waved upon
drying is retainable over a long period of time. Thus, the hair can satisfy such play
performance that it is waved without relying on drying.
[0114] Further, where the water is applied to the hair, then the hair is put between corrugated
plates and thereafter the corrugated plates are removed before the hair is dried,
the hair standing thus waved may be brushed in that state while extending it in straight
lines, whereupon the hair can be made to return to the initial one standing straight.
[0115] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0116] The doll hair may also, after water has been applied thereto, be put between the
corrugated plates to wave the hair. Besides, the hair standing dried may be put between
the corrugated plates and thereafter water may be applied to wave the hair.
Example 9
Production of hair for toys:
[0117] 60 parts of 35 mol% isophthalic acid modified polybutylene terephthalate (melting
point: 168°C) as a thermoplastic resin (A), as a thermoplastic resin (B) 39 parts
of an acrylic resin having a glass transition temperature of 35°C and 1 part of a
blonde colorant were mixed to obtain a resin for making up the core.
[0118] Meanwhile, 25 parts of an alcohol-soluble resin (tetrapolymer nylon 6-6,6-610-12)
and 75 parts of copolymer nylon 6-12 as a resin different from the alcohol-soluble
resin were mixed to obtain a resin for making up the sheath.
[0119] The resin for making up the core and the resin for making up the sheath were fed
to a core-forming extruder and a sheath-forming extruder, respectively, and these
were spun at 190°C from spinning dies having 20 ejection orifices, by using a composite
filament spinning machine and in such a way that the core/sheath ratio came to be
8/2 (volume ratio), to obtain blonde hair for toys (composite filaments) made up of
20 filaments of 90 µm each in diameter.
Production of doll:
[0120] The hair for toys thus obtained was set in a head of a doll, made of a plastic material,
by a known means and then this head was joined with a trunk to obtain a doll.
[0121] This hair of the doll had rigidity, and was unable to be curled by merely coiling
it around a hair curler. Water was applied to this hair by using a sprayer, whereupon
the hair came to have flexibility to come plastically deformable.
[0122] Further, this hair was heated to 35°C or more by hand touching, whereupon the hair
came more flexible. In this state, the hair was coiled around a cylindrical hair curler
of 9 mm in diameter and then dried. Thereafter, the curler was removed, whereupon
the hair came to stand curled in the same diameter as the curler, and this shape was
retainable over a long period of time like that of permanent waves.
[0123] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight. Here, the hair was heated to 35°C or more by
hand touching, whereupon the hair was readily able to return to the one standing straight.
[0124] Incidentally, where the water is applied to the hair, then the hair is coiled around
the curler and thereafter the curler is removed before the hair is dried, the hair
comes to stand curled in the same diameter as the curler unless any external force
is applied, and the condition where it stands curled upon drying is retainable over
a long period of time. Thus, the hair can satisfy such play performance that it is
curled without relying on drying.
[0125] Further, where the water is applied to the hair, then the hair is coiled around the
curler and thereafter the curler is removed before the hair is dried, the hair standing
thus curled may be brushed in that state while extending it in straight lines, whereupon
the hair can be made to return to the initial one standing straight.
[0126] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0127] The doll hair may also, after water has been applied thereto, be coiled around a
hair curler to curl the hair. Besides, the hair standing dried may be coiled around
a hair curler and thereafter water may be applied to curl the hair.
Example 10
Production of hair for toys:
[0128] 100 parts of a polyurethane type shape memory resin having a glass transition temperature
of 10°C was obtained as a resin for making up the core.
[0129] Meanwhile, 100 parts of an alcohol-soluble resin (tetrapolymer nylon 6-6,6-610-12)
and a brown colorant were mixed to obtain a resin for making up the sheath.
[0130] The resin for making up the core and the resin for making up the sheath were fed
to a core-forming extruder and a sheath-forming extruder, respectively, and these
were spun at 200°C from spinning dies having 20 ejection orifices, by using a composite
filament spinning machine and in such a way that the core/sheath ratio came to be
5/5 (volume ratio), to obtain brown hair for toys (composite filaments) made up of
20 filaments of 90 µm each in diameter.
Production of doll:
[0131] The hair for toys thus obtained was set in a head of a doll, made of a plastic material,
by a known means and then this head was joined with a trunk to obtain a doll.
[0132] This hair of the doll had rigidity, and was unable to be curled by merely coiling
it around a hair curler. Water was applied to this hair by using a sprayer, whereupon
the hair came to have flexibility to come plastically deformable.
[0133] In this state, the hair was coiled around a cylindrical hair curler of 9 mm in diameter
and then dried. Thereafter, the curler was removed, whereupon the hair came to stand
curled in the same diameter as the curler, and this shape was retainable over a long
period of time like that of permanent waves.
[0134] Next, water was again applied to the hair standing curled, by using a sprayer, and
this hair was brushed while extending it in straight lines, whereupon the hair returned
to the initial one standing straight.
[0135] Incidentally, where the water is applied to the hair, then the hair is coiled around
the curler and thereafter the curler is removed before the hair is dried, the hair
comes to stand curled in the same diameter as the curler unless any external force
is applied, and the condition where it stands curled upon drying is retainable over
a long period of time. Thus, the hair can satisfy such play performance that it is
curled without relying on drying.
[0136] Further, where the water is applied to the hair, then the hair is coiled around the
curler and thereafter the curler is removed before the hair is dried, the hair standing
thus curled may be brushed in that state while extending it in straight lines, whereupon
the hair can be made to return to the initial one standing straight.
[0137] Such changes in shape took place upon application of water, and the shape changed
was fixable when the hair was dried, thus the hair enjoyed repeatable play performance.
[0138] The doll hair may also, after water has been applied thereto, be coiled around a
hair curler to curl the hair. Besides, the hair standing dried may be coiled around
a hair curler and thereafter water may be applied to curl the hair.