CN100525664C - Artificial hair and wig using the same - Google Patents

Abstract

An artificial hair which is closely similar to natural hair in appearance, touch and feeling such as texture and has favorable physical data close to natural hair and a wig using this artificial hair. This artificial hair (1) has a core/sheath structure consisting of a core part (1B) and a sheath part (1A) covering the core part (1B). By using a polyamide resin, in particular, a semiaromatic polyamide resin for the core part (1B) and a polyamide resin, in particular, a straight-chain saturated aliphatic polyamide having a lower bending rigidity than the core part (1B) as the sheath part (1A), for example, the bending rigidity close to natural hair can be obtained. Moreover, changes and behaviors of the artificial hair depending on humidity change can be controlled in such a manner closely similar to natural hair. By using this artificial hair, therefore, it is possible to provide a wig having a natural feeling and an excellent appearance.

Description

Artificial hair and the wig that has used this artificial hair

Technical field

The wig that the present invention relates to have the artificial hair of rerum natura close and sensation and used this artificial hair with natural hair.

Background technology

Wig is since ancient times by making natural hair as raw material, and used always by people, in recent years since restriction, other problem in the raw-material supply of natural hair how synthetic fibers are made with the hair raw material as wig.This situation is that first target is selected employed synthetic fibers all to approach natural hair basically sensuously, on the rerum natura.

As employed artificial hair raw material, acrylic acid series, polyester system, synthetic fibers such as polyamide-based are arranged more, but in general, because low, the poor heat resistance of fusing point of acrylic fibers, therefore have shape-retaining ability after the hair-waving poor, for example if be exposed to processing such as curl in the hot water weakness such as in disorder that becomes.Polyester fiber is the raw material of intensity, excellent heat resistance, but compare hygroscopicity with natural hair extremely low, and bending rigid value is too high, therefore for example shows outward appearance, sense of touch, the rerum natura different with natural hair under the environment of high humidity, when using, present significant inharmonious sense as wig.

Here, so-called bending rigid value is and the relevant physics values of sensation such as the sense of touch of fiber or texture, and it is the physics value (with reference to non-patent literature 1) that quantizes and extensively approved by the fabric industry by KAWABATA formula determination method.Also developed the device (with reference to non-patent literature 2) that to measure a fiber or hair bending rigid value.This bending rigid value is also referred to as flexural rigidity, when being used in the bending moment that applies unit-sized on the artificial hair, the inverse that changes of consequent curvature defines.The bending rigid value of artificial hair is big more, and is then counter-bending, be difficult to bending, that is, be hard and be difficult to crooked artificial hair.On the contrary, this bending rigid value is more little, then is easy to bending more, is soft artificial hair.

Polyamide-based fiber can provide outward appearance, the rerum natura approaching with natural hair in many aspects, therefore all the time as wig with hair in practicality, particularly by utilize surface treatment not the invention of the manufacture method that proposes by the applicant of eliminations such as natural gloss the wig (with reference to patent documentation 1) of excellence can be provided.

In Fypro, the straight chain saturated fat polyamide that only connects methene chain as main chain with amido link is arranged, for example nylon 6, nylon 66 etc., and the semiaromatic family polyamide of introducing phenylene-unit in the main chain, for example MXD6 of the nylon 6T of TOYOBO Co., Ltd., MITSUBISHIGAS CHEMICAL Co., Ltd. etc.In patent documentation 1, disclose nylon 6 fiber has been carried out the surface-treated artificial hair as raw material, but having only under the situation of nylon 6 fiber, bending rigid value as the rerum natura relevant with sensation such as sense of touch or texture etc. is lower than natural hair, therefore, be difficult to make artificial hair with the natural hair homogeneity.

On the other hand, used the bending rigid value of the artificial hair of nylon 6T to be higher than natural hair on the contrary, be difficult to by the hair of this nylon 6T manufacturing with the natural hair homogeneity.Therefore, consideration is made the fiber of demonstration near the flexural rigidity of natural hair by the mixing spinning of nylon 6 and nylon 6T, but the fusing point difference of these 2 kinds of resins is bigger, if set the melt temperature be suitable for high-melting-point nylon 6T, the restriction aspect the manufacturing process of nylon 6 thermal oxide deterioration in fusion that then hear resistance is also low relatively under low melting point is too much.Therefore, above-mentioned nylon 6T can not be as the hair raw material and practicability.

As the method for effectively utilizing 2 kinds of resin properties respectively, the known fiber that sheath/cored structure is arranged.This fiber constitutes 1 fiber by the sheath shape fiber of the fiber that becomes core and this core of encirclement, by effectively utilizing the characteristic separately of 2 kinds of different resins, can make general fiber, perhaps makes wig artificial hair raw material.For example, in patent documentation 2, disclose the fiber of the sheath/cored structure that is constituted by vinylidene chloride, polypropylene etc., be the fiber of polyamide-based core by the modification of mixed protein cross-linked gel though in patent documentation 3, disclose.

And then, when transparent feel that common synthetic fibers had uses as artificial hair, in order to prevent to form factitious gloss, carried out by give the surface with concavo-convex make its become opaque, give various trials near the outward appearance and the sensation of natural hair.Disclose in the above-mentioned patent documentation 1 by making spherocrystal generation and growth from the teeth outwards and given concavo-convex method to the surface; In patent documentation 4, disclose with chemical reagent and handled fiber surface and give concavo-convex method to the surface.In addition, the also known micro mists such as sand, ice, dry ice that utilize inject process such as carry out to the surface of artificial hair

Method.

Patent documentation 1: Japanese kokai publication sho 64-6114 communique

Patent documentation 2: TOHKEMY 2002-129432 communique

Patent documentation 3: TOHKEMY 2005-9049 communique

Patent documentation 4: TOHKEMY 2002-161423 communique

Non-patent literature 1: river end Ji Xiong, fibre machinery association will (fiber engineering), 26,10, pp.721-728,1973

Non-patent literature 2:KATOTECH Co., Ltd., KES-SH single-shot Apparatus for Bending at low-temp (Single Hair Bending Tester) operation instructions

Summary of the invention

Used artificial hair at first needs to have sensation (outward appearance, sense of touch, texture) and the physics value near natural hair in the wig, and in addition, the physics value that further has than natural hair excellence is desirable.As mentioned above, various synthetic fibers raw material have feature and weakness separately, wherein, because therefore specific Fypro, particularly nylon 6 and the excellent of nylon 66 are practical, but have the problem that bending rigid value is lower than natural hair.

The present invention is in view of above-mentioned problem, and its purpose is to provide artificial hair with the sensation (outward appearance, sense of touch, texture) that approaches natural hair and physics value and the wig that has used this artificial hair.

The inventor etc. further investigate, found that the speciality of effectively utilizing polyamide-based synthetic fibers, making core is the high Fypro of flexural rigidity, making sheath portion is the sheath/cored structure of the flexural rigidity Fypro lower than core, promptly by the fiber that becomes core and the fiber that surrounds the structure that its sheath shape fiber constituted can bring into play the characteristic of two resins, the most preferred as the artificial hair that has extremely near the sensation (outward appearance, sense of touch, texture) of natural hair and physics value, and then finished the present invention.

In order to reach above-mentioned purpose, artificial hair of the present invention is characterised in that, it has by core and coats sheath/cored structure that the sheath portion of core is constituted, and core is made of polyamide, and sheath portion is made of the flexural rigidity polyamide lower than core.

In the above-described configuration, the surface of preferred artificial hair has micro concavo-convex portion to carry out delustring.Micro concavo-convex portion can be formed by spherocrystal and/or inject process.Preferred core is made of the semiaromatic polyamide composition resin, and sheath portion is made of straight chain saturated fat polyamide.Semiaromatic polyamide composition is the alternate copolymer of hexamethylene diamine and terephthalic acid (TPA) or the alternate copolymer of m-phenylene diamine (MPD) (metaxylylenediamine) and adipic acid, in addition, the alternate copolymer of the preferred caprolactam ring-opening polymerization polymer of straight chain saturated fat polyamide and/or hexamethylene diamine and adipic acid.The sheath of sheath portion and core/core weight ratio is preferably 10/90～35/65.Artificial hair can also contain pigment and/or dyestuff.

Artificial hair of the present invention is made of the two-layer structure of core with the sheath portion that surrounds it, sheath portion is formed by the different polyamide of flexural rigidity with core, therefore can provide with respect to humidity to change, demonstrate very artificial hair near the behavior of the bending rigid value of natural hair.Therefore, the bending rigid value of this artificial hair approaches natural hair, therefore can provide sensations such as outward appearance, sense of touch, texture especially near the artificial hair of the nature of natural hair, particularly can obtain flexural rigidity and change, show the artificial hair that is distributed as near the people according to temperature and humidity.

According to wig of the present invention, it is characterized in that, it contains the wig substrate and plants at the suprabasil artificial hair of wig, and artificial hair uses to have by core and coat sheath/cored structure that the sheath portion of core forms, core by polyamide constitutes, sheath portion is made of the flexural rigidity polyamide lower than core artificial hair.

By in wig of the present invention, using the artificial hair of above-mentioned formation, can provide with respect to humidity to change, demonstrate very wig near the behavior of the bending rigid value of natural hair.Therefore, according to this wig, fluffy of artificial hair is good, and its flexural rigidity approaches natural hair, and it is very excellent therefore can to obtain sensations such as outward appearance, sense of touch, texture, the wig of appearance nature.Therefore, change, show the artificial hair that is distributed as near the people that present just like the outward appearance by self hair of head self-sow, the wig user can not found out to wear wig according to temperature and humidity by flexural rigidity.

According to the present invention, can provide have sheath/cored structure, sensation (outward appearance, sense of touch, texture), each rerum natura, particularly flexural rigidity and by the artificial hair of the caused variation behavior of humidity near natural hair.And the wig that has used the artificial hair with this sheath/cored structure is compared with the wig that has used in the past the artificial hair that is made of single composite fibre materials, can give wearer and the observer on every side thereof with more natural sensation.

Particularly, by artificial hair being formed with flexural rigidity than the sheath/cored structure of the lower polyamide of core as sheath portion, can obtain flexural rigidity changes according to temperature or humidity, demonstrate the artificial hair that is distributed as near the people, the result is, by artificial hair of the present invention, even if the state of the roll coil of strip, stretching, extension of curling when water is got wet and the curling answer degree when removing moisture under placing naturally can demonstrate the behavior that is similar to natural hair.

Therefore, according to wig of the present invention, be soaked with rain or environment in high humility under when wearing wig, characteristic by changing by the caused bending rigid value of the moisture absorption of artificial hair, promptly along with humidity rising bending rigid value reduces, artificial hair becomes soft and hangs down, and fluffy sense disappears, but if the moisture that is absorbed through nature placement or drying and the words of moisture releasing, slowly fluffy of artificial hair is back to state originally once more.As a result and since obtain just like with wig by the identical behavior of natural hair condition of scalp growth, therefore be difficult to find out to be wig, can present the appearance of outward appearance excellence.

Description of drawings

Fig. 1 schematically represents the formation of the artificial hair of the 1st embodiment of the present invention, (A) is stereogram, (B) is the vertical cross-section diagram of the length direction of artificial hair.

Fig. 2 is for schematically representing the sectional view about the length direction of the formation of the variation of artificial hair of the present invention.

Fig. 3 is the skeleton diagram of spinning-drawing machine used in the manufacturing of artificial hair of the present invention.

Fig. 4 is the summary sectional view of ejiction opening used in the spinning-drawing machine.

Fig. 5 is the stereogram that schematically expression has used the wig of the artificial hair of the 2nd embodiment of the present invention to constitute.

Fig. 6 is the enlarged drawing of the wig of schematically presentation graphs 5 with respect to the behavior of humidity variation, (A) the common moisture condition of expression, (B) expression high humility state.

Fig. 7 is the dependent figure of elongation multiplying power of the bending rigid value of the artificial hair of expression embodiment 3.

Fig. 8 is the figure of the electron microscopic mirror image in the artificial hair cross section of expression embodiment 2.

Fig. 9 is the figure of the electron microscopic mirror image on the artificial hair surface of expression embodiment 2.

Figure 10 is the figure of the electron microscopic mirror image in the artificial hair cross section of expression embodiment 3.

Figure 11 has the figure of electron microscopic mirror image in artificial hair cross section of the sheath/cored structure of comparative example 3 for expression.

Figure 12 is the dependent curve of humidity of the artificial hair bending rigid value of expression embodiment 1～5 and comparative example 1,2.

Figure 13 is the dependent curve of humidity of the artificial hair bending rigid value of expression embodiment 6～10 and comparative example 1,4,5.

Figure 14 used for artificial hair, (B) natural hair, (C) of expression (A) embodiments of the invention polyester in the past artificial hair carried out the initial conditions of curling respectively.

Figure 15 has used the figure that is immersed in the state in the water respectively of the artificial hair of polyester in the past for artificial hair, (B) natural hair, (C) of expression (A) embodiments of the invention.

Figure 16 used for artificial hair, (B) natural hair, (C) of expression (A) embodiments of the invention polyester in the past artificial hair be immersed in the water respectively after the figure of drying regime.

Symbol description

1: artificial hair

1A: sheath portion

1B: core

1C: micro concavo-convex portion

10: the surface has the artificial hair of micro concavo-convex portion

21: the 1 fusion tanks

22: the 2 fusion tanks

21A, 22A: molten resin is formed

21B, 22B: gear pump

23: ejection portion

23A: outer shroud ejiction opening

23B: center ejiction opening

23C: ejiction opening

24: hot bath

25: the 1 draw rolls

26: the 1 xeothermic grooves

27: the 2 draw rolls

28: the 2 xeothermic grooves

29: the 3 draw rolls

30: the 3 xeothermic grooves

31: lubricating arrangement

32: the 4 draw rolls

33: air blast

34: up-coiler

40: the wig that has used artificial hair

41: the wig substrate

The specific embodiment

Below, explain embodiments of the present invention with reference to the accompanying drawings.

The artificial hair of the present invention's the 1st embodiment at first is described.

Fig. 1 schematically represents the formation of the artificial hair of the present invention's the 1st embodiment, (A) is that stereogram, (B) are the vertical cross-section diagram of the length direction of artificial hair.As shown in the figure, artificial hair 1 of the present invention has its surface and has sheath/cored structure of core 1B for the inside of the 1A of sheath portion, the 1A of sheath portion.Sheath/cored structure is when diagram, and expression is with the example of concentric circles configuration roughly, but also comprises: core 1B and sheath 1A are the special-shaped shape beyond the concentric circles roughly, for example are not entirely concentric circles, and core is with respect to the situation of sheath off-centre.In addition, can also be that core is the different sheath/core shape of thickness just round, sheath substantially.In addition, the cross sectional shape of artificial hair 1 can also be circle, ellipse, cocoon type etc.

As the polyamide of the material that becomes above-mentioned core 1B, the semiaromatic polyamide composition resin that preferably working strength and flexural rigidity are high.As this semiaromatic polyamide composition, can enumerate shown in the macromolecule that alternate copolymer constituted (for example nylon 6T) of hexamethylene diamine shown in the Chemical formula 1 and terephthalic acid (TPA) or the Chemical formula 2 by amido link macromolecule (for example nylon MXD 6) of forming of bonding adipic acid and m-phenylene diamine (MPD) etc. alternately.

[changing 1]

[changing 2]

As the polyamide of the material that becomes the above-mentioned sheath 1A of portion, can use the flexural rigidity polyamide lower than the material of core 1B, for example can preferably use straight chain saturated fat polyamide.As this straight chain saturated fat polyamide, can enumerate the macromolecule that ring-opening polymerization polymer constituted of the caprolactam shown in the chemical formula 3, for example nylon 6, or the macromolecule that alternate copolymer constituted of hexamethylene diamine shown in the chemical formula 4 and adipic acid, for example nylon 66 etc.

[changing 3]

[changing 4]

In the artificial hair 1 of the present invention, when the surface of the 1A of sheath portion is even surface, produce gloss.For the not natural gloss on the surface of eliminating this artificial hair 1, can carry out so-called delustring and handle.

Fig. 2 is that schematically expression is about the sectional view of the length direction of the formation of the variation of artificial hair of the present invention.As shown in the figure, on the surface of the 1A of sheath portion of artificial hair 10, be formed with the 1C of micro concavo-convex portion.When forming this micro concavo-convex 1C of portion, if artificial hair 10 runs into the light time, then diffuse reflection can take place.Therefore, on the artificial hair surface, penetrate the reflection of generation, thereby can not produce gloss, produce so-called extinction effect because of illumination.

Here, the 1C of micro concavo-convex portion can by in the spinning of artificial hair 1 or the fiber after the spinning utilize the inject process of micro powders such as sand, ice, dry ice to give.When in the spinning of artificial hair 1, forming, can form spherocrystal in the outmost surface of artificial hair 1.At this moment, spherocrystal can also be formed and utilize the inject process of micro powders such as above-mentioned sand, ice, dry ice to make up and handle.Can form the jog 1C bigger by the formed jog of the combination of this spherocrystal or inject process, so that light is by diffuse reflection than the grade of visible wavelength.

Artificial hair 1,10 of the present invention can carry out painted according to the hobby of wearer.Hybrid pigment and/or dyestuff in the polymer of this painted raw material that can be as spinning time the mixing also can dye to artificial hair after spinning.

According to artificial hair 1,10 of the present invention, use the sheath/cored structure that uses the flexural rigidity polyamide lower among the high polyamide of flexural rigidity, the 1A of sheath portion by being formed on core 1B, can obtain flexural rigidity and change, demonstrate the artificial hair that is distributed as near the people according to temperature or humidity than core 1B.In addition, according in the 1A of sheath portion surface design the artificial hair 10 of the 1C of micro concavo-convex portion, can produce extinction effect, thus more near the physics value and the sensation of artificial hair.

The manufacture method of artificial hair of the present invention then, is described.

Fig. 3 is the skeleton diagram of used spinning-drawing machine in the manufacturing of artificial hair of the present invention, and Fig. 4 is the summary sectional view of the used ejection of spinning-drawing machine portion.As shown in Figure 3, spinning-drawing machine 20 comprises: the 1st fusion tank 21 that becomes the polyamide of the 1A of sheath portion; Become the 2nd fusion tank 22 of the polyamide of core 1B; The ejection portion 23 that will spray by fused solution 21A, the 22A that these fusion tanks 21,22 are supplied with; When solidifying, the thread fused mass that will be sprayed by the ejiction opening 23C of ejection portion 23 forms the hot bath 24 of jog from the teeth outwards; Afterwards through comprising 3 sections stretching heat treatment step portions of draw roll 25,27,29 and xeothermic groove 26,28,30 each sections; Be used on the silk surface, further forming the air blast 33 of jog 1C; Will be by the up-coiler 34 of air blast 33 delustrings to the artificial hair coiling of required degree.

Fusion tank 21,22 has the heater of the particle fusion that is used to make polyamide and is used for screw rod mixing and that supply with to ejection portion 23 etc., has the gear pump 21B, the 22B that fused solution 21A, 22A are delivered to ejection portion 23.

As shown in the figure, the fiber that comes out by the ejiction opening 23C of ejection portion 23 through hot bath, stretching, xeothermic mechanism after, the lubricating arrangement of using by antistatic 31, the mitigation that is used for stable dimensions are applied to the draw roll 32 of the pulling force on the artificial hair and air blast 33 that surface treatment is used is reeled by up-coiler 34.

As shown in Figure 4, ejection portion 23 has the double-deck ejiction opening of the concentric circles of being set to, and has respectively by the 23B of its center circle portion ejection semiaromatic polyamide composition resin fused solution 22A, from the structure of the outer portion 23A ejection straight chain representative examples of saturated aliphatic polyamide fused solution 21A that surrounds the center circle 23B of portion.

The manufacture method of the artificial hair that utilizes above-mentioned weaving loom 20 then, is described.

Can use above-mentioned spinning-drawing machine 20, in fusion tank 21,22, each polyamide of fusion under suitable respectively temperature, deliver to ejection portion 23, will be from ejiction opening 23C from the semiaromatic polyamide composition resin fused solution 22A of the 23B of center circle portion of ejiction opening, from the straight chain representative examples of saturated aliphatic polyamide fused solution 21A ejection of outer portion 23A, form the silk of sheath/cored structure, thus manufacture of intraocular hair 1,10.

At this moment, will be called sheath/core capacity with the ratio of gear pump the 21B capacity of carrying straight chain representative examples of saturated aliphatic polyamide fused solution 21A within a certain period of time and the capacity of carrying semiaromatic polyamide composition resin fused solution 22A with gear pump 22B within a certain period of time in the present invention.As described later, for the bending rigid value that makes artificial hair 10 approaches the bending rigid value of natural hair, be preferably 10/90～35/65 scope as the sheath/core weight ratio of the weight ratio of sheath and core.As creating conditions of the weight ratio that is used to obtain this sheath and core,, be preferably 1/2～1/7 as sheath/core Capacity Ratio.This scope is suitable during for the physics values such as bending rigid value of artificial hair 1,10 described later.This sheath/core Capacity Ratio is greater than 1/2 o'clock, when promptly the ratio of the 1A of sheath portion becomes big, the increase effect of the bending rigid value of the core 1B of artificial hair 1,10 diminished.On the other hand, less than 1/7, promptly the ratio of core 1B becomes big as if this sheath/core Capacity Ratio, and then bending rigid value becomes excessive, can not approach natural hair, and is not preferred.

The elongation multiplying power of artificial hair 1,10 when spinning can be 5～6 times.This elongation multiplying power is about about 2 times of elongation multiplying power of the artificial hair of independent nylon 6 in the past.In the artificial hair 1,10 of the present invention, the elongation multiplying power during spinning, line footpath, bending rigid value etc. can suitably be set according to required design.At this moment, the condition the when sheath of artificial hair 1,10/core shape can be passed through suitably control spinning forms roughly concentric circles.

Artificial hair of the present invention is with in the spinning, by making the silk of pulling out in hot bath 24, pass through in the water more than 80 ℃ by ejiction opening 23C, the spherocrystal that becomes jog 1C is produced and growth, give the outward appearance identical to silk with natural hair, be used to eliminate the not delustring of natural gloss, thus can manufacture of intraocular hair 10.

As the method for the silk surface being given the 1C of micro concavo-convex portion, except the generation that utilizes above-mentioned spherocrystal and growth, can also use with the silk surface of particulates such as sand, ice, dry ice after and carry out the method for inject process or the silk surface is carried out any or their method of appropriate combination in the method for medicine processing spinning.

In order to give as artificial hair 1,10 preferred colors, outward appearance, can be when spinning hybrid pigment and/or dyestuff, perhaps after spinning finishes with artificial hair 1,10 dyeing itself.

As mentioned above, therefore artificial hair 1,10 of the present invention can reappearance make the artificial hair 1,10 that flexural rigidity is higher than the artificial hair of independent straight chain representative examples of saturated aliphatic polyamide in the past well owing to have the formed sheath/cored structure of the different polyamide of flexural rigidity.In addition, by on the surface of artificial hair 1, forming the micro concavo-convex 1C of portion, can give the natural gloss that approaches natural hair, and give natural look as hair.

The wig of the artificial hair that has used the 2nd embodiment of the present invention then, is described.

Fig. 5 is the stereogram that schematically expression has used the wig of the artificial hair of the 2nd embodiment of the present invention to constitute.The wig 40 that has used artificial hair 1,10 of the present invention is to plant artificial hair 1 or 10 and the wig that constitutes in wig substrate 41.Wig substrate 41 can be made of mesh substrate or artificial skin substrate.In illustrated situation, wig substrate 41 expressions are planted the state on the mesh of mesh members.Wig substrate 41 can also be by mesh substrate and artificial skin substrate combination and is constituted, and promptly is not particularly limited so long as meet the design and the purposes of wig.

The diameter of artificial hair 1,10 can be about 0.05～0.1mm.Can preferably use its surperficial bright luster to be suppressed, to have artificial hair 10 near the gloss of natural hair.The color of artificial hair 1,10 can suitably be selected black, dark brown, gold etc. according to the hope of wearer.If the artificial hair of the corresponding to color of self hair of selection and user's depilation portion periphery, then sense strengthens naturally.When conduct is decorated with wig or wig, also can by on artificial hair of the present invention, carry out different with self hair painted form netted, perhaps on artificial hair from radicle to sending out tip embodiment as changing the deep or light of tone or slowly changing the gradual change dyeing (gradation) etc. of color.

Fig. 6 is the enlarged drawing of the wig of schematically presentation graphs 5 with respect to the behavior of humidity variation, (A) shows that common moisture condition, (B) show the high humility state.Shown among the figure that artificial hair is the situation of straight straight hair.

Shown in Fig. 6 (A), the artificial hair 1,10 that plants on wig 40 of the present invention has the bending rigid value that approaches natural hair.Therefore, be that fluffy of artificial hair 1,10 is good under about 40～60% the common environment in humidity, wig 40 produces fluffy sense.

Relative therewith, wig 40 of the present invention is soaked with rain or when dressing wig under high humidity environment, owing to plant the characteristic that the caused bending rigid value of moisture absorption of the artificial hair 1,10 on wig changes, be that bending rigid value reduces along with the rising of humidity, therefore artificial hair becomes soft, shown in Fig. 6 (B), hang down, fluffy sense disappears.And if the moisture releasing by nature placement or drying of the moisture that absorbed, then artificial hair is 1,10 slowly fluffy, is back to state originally once more.

When artificial hair 1,10 has when curling, become the stretching, extension mode of curling near natural hair, identical with the situation of straight hair, if if the moisture that is absorbed is by placing naturally or dry and by moisture releasing, then curling restores to the original state.

According to wig 40 of the present invention, owing to use at core 1B and use the high polyamide of flexural rigidity, the 1A of sheath portion uses the artificial hair 1,10 of the sheath/cored structure of the rigidity polyamide lower than core 1B, and it is planted in the wig substrate, therefore flexural rigidity changes according to temperature or humidity, have the sense of touch and the behavior that approach natural hair, can obtain wig in apparent good order and condition.And, be used as when forming the 1C of micro concavo-convex portion in its surface for artificial hair, by extinction effect, present more outward appearance near natural hair.

When wig 40 of the present invention be soaked with rain, because when the sweat of wearer and adhesive water, because artificial hair 1,10 uses the good polyamide of moisture hygroscopicity, therefore absorb moisture,, show behavior near natural hair because the increase artificial hair 1,10 of its weight hangs down.Relative therewith, for example when using the wig of the artificial hair in the past that utilizes polyester, because flexural rigidity is higher than natural hair, therefore dress wig, through the arrangement hair style and the artificial hair of self hair mixed in together and wig owing to adhesive water, self hair hangs down to the scalp side, the artificial hair of polyester then becomes fluffy state, and the hair of the wig that is formed by polyester separates with self hair, presents factitious outward appearance.But among the present invention, if adhesive water, then basic identical with hanging down of self hair, the hair of wig also hangs down, and therefore the separation of hair can not take place, thereby self hair and artificial hair can be kept good correlated state.

Embodiment 1

Then, explain embodiments of the invention.

Use spinning-drawing machine 20 shown in Figure 3, make the artificial hair 10 of embodiment 1.As the polyamide of core 1B, use nylon 6T (productions of TOYOBO Co., Ltd.), as the polyamide use nylon 6 (production of TOYOBO Co., Ltd.) of the 1A of sheath portion.80 ℃ hot water is used in hot bath 24.Sheath/core Capacity Ratio is set at 1/7, and the ejiction opening temperature is set at 310 ℃, manufacture of intraocular hair 10.The sheath of the artificial hair 10 of this embodiment 1/core weight ratio is 12/88.

As colouring agent, use and mix above-mentioned sheath 1A of portion or used polyamide and the pigment of core 1B with the regulation ratio, carry out heating and melting, cool off mixing back, makes the resin flake of sheet.To be called masterbatch as the resin flake that this colouring agent uses.As the masterbatch that uses among the embodiment, use resin flake, the resin flake that contains 3 weight % yellow organic pigments that contains 3 weight % black inorganic salts material, the resin flake that contains 4 weight % organic red pigments.

Specifically, the initial molten resin 21A that in the 1st fusion tank 21, drops into nylon 6 thin slice 84g, the black 5g as masterbatch, yellow 10g, red 1g, amounts to 100g as the 1A of sheath portion raw material.In the 2nd fusion tank 22, drop into nylon 6T thin slice 84g, the black 5g as masterbatch, yellow 10g, red 1g, amount to the molten resin 22A of 100g as core 1B raw material.

Utilize gear pump 22B that nylon 6T is sent center ejiction opening 23B to ejection portion 23, utilizes gear pump 21B that nylon 6 is sent to outer shroud ejiction opening 23A, adjust the rotating speed of gear pump 21B, 22B, make and extrude Capacity Ratio and count 1/7 with sheath/core ratio.Spinning-drawing machine is to use the spinning head in 15 holes and spins the machine of 15 fibers.

The length of the fiber of the sheath/cored structure that comes out from ejiction opening 23C is 1.5m, makes it by by in 80 ℃ of hot baths that hot water constituted 24, generates spherocrystal from the teeth outwards.

Afterwards, the 1st xeothermic groove 26 by the 1st draw roll 25 and 180 ℃, stretch, the 2nd xeothermic groove 28 by the 2nd draw roll 27 and 180 ℃ carries out heat setting, after further the 3rd xeothermic groove 30 by 29,185 ℃ of the 3rd draw rolls was used for the heat treatment (annealing) of stability line footpath size, feeding was used to prevent the lubricating arrangement 31 of static.

As final operation, feed the 4th draw roll 32 and air blast 33 and brush fine alumina powder from the teeth outwards with the fiber surface roughening, be wound up into then in the up-coiler 34.In this operation, the speed of adjusting the 1st～the 4th draw roll 25,27,29,32 reaches 150m/ minute so that the elongation multiplying power reaches 5.5 times, winding speed.

The diameter of the artificial hair 10 of manufacturing is 40～80 μ m.In embodiment 1, making the elongation multiplying power is 5.5 times, and shown in the embodiment 3, the flexural rigidity of artificial hair 10 can be by the adjustment of elongation multiplying power as described later.

Embodiment 2

To make sheath/core Capacity Ratio be 1/5 except adjusting each gear pump 21B, 22B, makes the artificial hair 10 that sheath/cored structure constitutes under the condition identical with embodiment 1.The sheath of the artificial hair 10 of this embodiment 2/core weight ratio is 16.1/83.9.

Embodiment 3

To make sheath/core Capacity Ratio be 1/3 except adjusting each gear pump 21B, 22B, makes the artificial hair 10 that sheath/cored structure constitutes under the condition identical with embodiment 1.The sheath of the artificial hair 10 of this embodiment 3/core weight ratio is 24.2/75.8, and its diameter is 80 μ m.

Fig. 7 is the dependent figure of elongation multiplying power of the bending rigid value of the artificial hair 10 of demonstration embodiment 3.Among the figure, transverse axis represents to extend multiplying power, the longitudinal axis is represented bending rigid value (10 ^-5Gfcm ²/ root).Condition determination is 22 ℃ of temperature, humidity 40%.As shown in Figure 7, the elongation multiplying power is that the bending rigid value of 3 times and 5.5 times is respectively 430 * 10 ^-5Gfcm ²/ root, 720 * 10 ^-5Gfcm ²/ root increases by the elongation multiplying power, and bending rigid value then increases point-blank.

Embodiment 4

To make sheath/core Capacity Ratio be 1/2 except adjusting each gear pump 21B, 22B, makes the artificial hair 10 that sheath/cored structure constitutes under the condition identical with embodiment 1.The sheath of the artificial hair 10 of this embodiment 4/core weight ratio is 32.3/67.7.

Embodiment 5

Except use nylon 66 (MITSUBISHI ENGINEERING PLASTICS (strain) productions) as the polyamide of the 1A of sheath portion, to make hot bath 24 be that 92 ℃, ejiction opening temperature are 320 ℃, the artificial hair 10 of manufacturing embodiment 5 under the condition identical with embodiment 1.The sheath of the artificial hair 10 of this embodiment 5/core weight ratio is 16.2/83.8.

Creating conditions of the artificial hair of the foregoing description 1～5 is shown in Table 1.Herein, the diameter of the artificial hair 10 of manufacturing is 40～80 μ m.

Table 1

Embodiment 6

Except the polyamide that makes core 1B is that the polyamide of nylon MXD 6 (MITSUBISHI GASCHEMICAL Co., Ltd. produce, trade name MX nylon), the 1A of sheath portion is a nylon 6 (MITSUBISHI ENGINEERING PLASTICS (strain) productions), the ejiction opening temperature is set at 270 ℃, sheath/core Capacity Ratio is 1/7, the artificial hair 10 of manufacturing embodiment 6 under the condition identical with embodiment 1.The sheath of the artificial hair 10 of this embodiment 6/core weight ratio is 11.8/88.2.In the artificial hair 10 of this embodiment 6, use nylon MXD 6 to replace the used nylon 6T of core 1B of embodiment 1～5.Wherein, use 95 ℃ damp and hot groove to replace the 1st xeothermic groove 26 of embodiment 1 to stretch, the 2nd xeothermic groove 28 is set at 150 ℃ carries out heat setting, after the 3rd xeothermic groove 30 by the 3rd draw roll 29 and 185 ℃ is used for the heat treatment (annealing) of stability line footpath size afterwards, be passed into the lubricating arrangement 31 that is used for preventing static.The final operation that will become the fiber surface roughening of artificial hair is carried out similarly to Example 1.In this operation, the speed of adjusting the 1st～the 4th draw roll 25,27,29,32 reaches 150m/ minute so that the elongation multiplying power reaches 5.6 times, winding speed.Herein, the diameter of the artificial hair 10 of manufacturing is 40～80 μ m.

Embodiment 7

Except making sheath/core Capacity Ratio is 1/5, makes the artificial hair 10 of embodiment 7 under the condition identical with embodiment 6.The sheath of the artificial hair 10 of this embodiment 7/core weight ratio is 15.8/84.2.

Embodiment 8

Except making sheath/core Capacity Ratio is 1/4, makes the artificial hair 10 of embodiment 8 under the condition identical with embodiment 6.The sheath of the artificial hair 10 of this embodiment 8/core weight ratio is 18.9/81.1.

Embodiment 9

Except making sheath/core Capacity Ratio is 1/3, makes the artificial hair 10 of embodiment 9 under the condition identical with embodiment 6.The sheath of the artificial hair 10 of this embodiment 9/core weight ratio is 23.8/76.2.

Embodiment 10

Except making sheath/core Capacity Ratio is 1/2, makes the artificial hair 10 of embodiment 10 under the condition identical with embodiment 6.The sheath of the artificial hair 10 of this embodiment 10/core weight ratio is 31.8/68.2.Creating conditions of the foregoing description 6～10 is shown in Table 2.Herein, the diameter of the artificial hair 10 of manufacturing is 40～80 μ m.

Table 2

The artificial hair of comparative example then, is described.

(comparative example 1)

Identical with embodiment 1, use spinning-drawing machine, make the ejiction opening temperature to be 270 ℃ but not use the 1st fusion tank 21, make the structure that does not have sheath, the line of nylon 6 directly is that 80 μ m, elongation multiplying power are 3.3 silk.

(comparative example 2)

Identical with embodiment 1, use spinning-drawing machine, make the ejiction opening temperature to be 310 ℃ but not use the 1st fusion tank 21, make the structure that does not have sheath, the line of nylon 6T directly is that 80 μ m, elongation multiplying power are 5.5 silk.

(comparative example 3)

Identical with embodiment 1, making core 1B is that polyester (TORAY (strain) production), the 1A of sheath portion are nylon 6, to make the ejiction opening temperature be 290 ℃, makes sheath/core Capacity Ratio and be 1/1, line directly is that 80 μ m, elongation multiplying power are 5.5 silk.

(comparative example 4)

Identical with embodiment 1, use spinning-drawing machine, make the ejiction opening temperature to be 270 ℃ but not use the 1st fusion tank 21, make the structure that does not have sheath, in addition, by condition and the method identical with embodiment 6, making by line directly is that 80 μ m, elongation multiplying power are 5.6 the silk that nylon MXD 6 constituted.

(comparative example 5)

Identical with embodiment 1, use spinning-drawing machine, make the ejiction opening temperature and be 270 ℃ but do not use the 1st fusion tank 21, make the structure that does not have sheath, in addition, by condition and the method identical with embodiment 6, making by line directly is that 80 μ m, elongation multiplying power are 5.6 the nylon MXD 6 and the silk that mixed polyamide constituted of nylon 6.The weight ratio of nylon MXD 6 and nylon 6 is 90:10.The pigment mixing ratio of above-mentioned comparative example 1～5 is identical, makes black, yellow, red mixing ratio be respectively 0.15%, 0.30%, 0.04%.Create conditions and be shown in Table 3.

Table 3

Then, the core 1B that illustrates at the artificial hair 10 of embodiment 1 uses nylon 6T or MXD6, uses the reason of nylon 6 at the 1A of sheath portion.

Table 4 is dependent tables of humidity of the bending rigid value of artificial hair under 22 ℃ made of the independent nylon MXD 6 of independent nylon 6T, the comparative example 4 of the expression independent nylon 6 that uses comparative example 1, comparative example 2.Bending rigid value is to use aftermentioned single-shot Apparatus for Bending at low-temp (KATOTECH (strain) production) to measure.

As shown in Table 4, used the bending rigid value of artificial hair of the nylon 6 of comparative example 1 to be respectively 510 * 10 40%, 60%, 80% time in humidity ^-5Gfcm ²/ root, 340 * 10 ^-5Gfcm ²/ root, 250 * 10 ^-5Gfcm ²/ root.Though do not show in the table, used the bending rigid value and the humidity dependence thereof of artificial hair of nylon 66 identical yet with nylon 6.

Used the bending rigid value of artificial hair of the nylon 6T of comparative example 2 to be respectively 980 * 10 40%, 60%, 80% time in humidity ^-5Gfcm ²/ root, 920 * 10 ^-5Gfcm ²/ root, 860 * 10 ^-5Gfcm ²/ root.

Used the bending rigid value of artificial hair of the nylon MXD 6 of comparative example 4 to be respectively 940 * 10 40%, 60%, 80% time in humidity ^-5Gfcm ²/ root, 870 * 10 ^-5Gfcm ²/ root, 780 * 10 ^-5Gfcm ²/ root.Hence one can see that, used the artificial hair of nylon 6T and nylon MXD 6 to compare with the artificial hair of nylon 6 or nylon 66, shown higher bending rigid value.

Therefore, the core 1B of the artificial hair of embodiment 1～10 is the polyamide that flexural rigidity high nylon 6T or nylon MXD 6 are constituted, and the 1A of sheath portion is that flexural rigidity is lower than the nylon 6 of core 1B or the polyamide that nylon 66 is constituted.

Table 4

All characteristics of the artificial hair that the foregoing description 1～10 and comparative example 1～5 are made then, are described.

Fig. 8 is the electron microscopic mirror image in the cross section of the artificial hair of demonstration embodiment 2 making.The accelerating potential of electronics is that 15kV, multiplying power are 800 times.The sheath of this artificial hair 10/core Capacity Ratio is 1/5, its diameter is 80 μ m, the elongation multiplying power is 5.5 times.Known to figure, forming core 1B is semiaromatic polyamide composition (nylon 6T), the 1A of sheath portion is sheath/cored structure that straight chain saturated fat polyamide (nylon 6) constitutes around it.

Fig. 9 is the electron microscopic mirror image on the surface of the artificial hair 10 of demonstration embodiment 2.The accelerating potential of electronics is that 15kV, multiplying power are 700 times.Known to figure, go up generation and growth spherocrystal at the straight chain saturated fat polyamide (nylon 6) on surface, give the 1C of micro concavo-convex portion to the surface.

Figure 10 is the electron microscopic mirror image in the cross section of the artificial hair 10 of demonstration embodiment 3.The accelerating potential of electronics is that 15kV, multiplying power are 900 times.The sheath of this artificial hair 10/core Capacity Ratio is 1/3, its diameter is 80 μ m, the elongation multiplying power is 5.5 times.Known to figure, forming core 1B is semiaromatic polyamide composition (nylon 6T), the 1A of sheath portion is sheath/cored structure that straight chain saturated fat polyamide (nylon 6) constitutes around it.

Figure 11 is the electron microscopic mirror image in the cross section of the artificial hair with sheath/cored structure of demonstration comparative example 3.The accelerating potential of electronics is that 15kV, multiplying power are 300 times.

It is that polyester, the 1A of sheath portion are sheath/cored structure that straight chain saturated fat polyamide (nylon 6) is constituted that the artificial hair of comparative example 3 has core 1B.Sheath/core Capacity Ratio is 1/1, line directly is 80 μ m, the elongation multiplying power is 5.5 times.Known to figure, as seen peeling off at the interface of core 1B and the 1A of sheath portion, fiber fades, painted color seems variable color, and this sheath/cored structure is unsuitable for artificial hair.

The measurement result of bending rigid value of the artificial hair of embodiment and comparative example then, is described.Bending rigid value is generally the physics value that is used for fiber etc. as mentioned above, also is realized as the rerum natura relevant with sensation sensation proterties such as (outward appearance, sense of touch, texture) under the situation of hair in recent years.The mensuration of the flexural rigidity of fiber is relevant with fabric, and extensive known KAWABATA formula determination method and principle thereof are used the single-shot Apparatus for Bending at low-temp (KATOTECH (strain) production, model KES-FB2-SH) with its improvement, measure the flexural rigidity of artificial hair.As assay method, in any case as the artificial hair of the embodiment of the invention of sample, comparative example and natural hair, all be that 1 hair to each 1cm becomes circular-arc with the crooked evenly whole hair of certain curvature, detect the slight curves moment that accompanies with it, measure the relation of bending moment and curvature.Change by bending moment/curvature thus and obtain bending rigid value.The condition determination of representative is as follows.

(condition determination)

Chuck spacing: 1cm

Torque master: steel wire (tortion wire) reverse detection mode

Torque sensitivity: 1.0gfcm (in full scale 10V)

Curvature: ± 2.5cm ^-1

Bending deflection speed: 0.5cm ^-1/ sec

Measure circulation: 1 back and forth

Here chuck is the device of each hair of the above-mentioned 1cm of clamping.

Figure 12 is the dependent curve of humidity of the artificial hair bending rigid value of expression embodiment 1～5 and comparative example 1,2.Among the figure, transverse axis represents that humidity (%), the longitudinal axis represent bending rigid value (10 ^-5Gfcm ²/ root).Measuring temperature is 22 ℃.Among Figure 12, show the humidity dependence of artificial hair bending rigid value of embodiment and comparative example and the characteristic of natural hair together.Natural hair is because individual difference is big, therefore from 25 male sex of 20～50 years old each stratum of age level, 38 women, gather hair, sample for diameter 80 μ m is wherein measured bending rigid value, and its mean value as standard value, is also shown maximum and minimum of a value in addition among the figure.The mean value of the bending rigid value of natural hair is in humidity 40% and be respectively 720 * 10 80% time ^-5Gfcm ²/ root and 510 * 10 ^-5Gfcm ²/ root demonstrates the rising along with humidity, the characteristic that the mean value of bending rigid value roughly reduces simply.

Relative therewith, the maximum of the bending rigid value of natural hair is in humidity 40% and be respectively 740 * 10 80% time ^-5Gfcm ²/ root, 600 * 10 ^-5Gfcm ²/ root.In addition, its minimum of a value is in humidity 40% be respectively 660 * 10 80% time ^-5Gfcm ²/ root and 420 * 10 ^-5Gfcm ²/ root, the bending rigid value of natural hair has deviation.

The line of the artificial hair 10 of embodiment 1 directly is 80 μ m, sheath/core Capacity Ratio 1/7, under the condition of humidity 40%, bending rigid value be equate with the natural hair maximum 740 * 10 ^-5Gfcm ²/ root, along with the rising of humidity, bending rigid value slowly reduces, and is reduced to about 700 * 10 60% time in humidity ^-5Gfcm ²/ root, be reduced to about 650 * 10 80% time in humidity ^-5Gfcm ²/ root.

The result as can be known thus, during for the artificial hair 10 of embodiment 1, its demonstration is higher than the bending rigid value of the bending rigid value of natural hair, if the bending rigid value of the artificial hair that the artificial hair that the nylon 6 of comparison aftermentioned comparative example 1 is constituted, the nylon 6T of comparative example 2 are constituted shows the bending rigid value and the humidity dependence that are similar to natural hair.

The line of the artificial hair 10 of embodiment 2 directly is 80 μ m, sheath/core Capacity Ratio 1/5, and under the condition of humidity 40%, bending rigid value equates with natural hair, is 720 * 10 ^-5Gfcm ²/ root, humidity reaches 45%, and bending rigid value slowly reduces, and is reduced to about 650 * 10 ^-5Gfcm ²/ root.Then, humidity is at 45～60% times, and bending rigid value is about 650 * 10 ^-5Gfcm ²/ root, and constant.Between humidity 60～80%, flexural rigidity slowly reduces, and is reduced to about 600 * 10 80% time in humidity ^-5Gfcm ²/ root.

Thus the result as can be known, during for the artificial hair 10 of embodiment 2, consistent with the bending rigid value of natural hair humidity 40% time, along with humidity rises, bending rigid value reduces, and shows the bending rigid value and the humidity dependence that are similar to natural hair.

The artificial hair 10 of embodiment 3 is that with the difference of embodiment 1 sheath/core Capacity Ratio is 1/3.Under the condition of humidity 40%, bending rigid value equates with natural hair, is 720 * 10 ^-5Gfcm ²/ root, humidity reaches 40～60%, and bending rigid value reduces, and is reduced to about 520 * 10 ^-5Gfcm ²/ root.Then, humidity is at 60～80% times, and bending rigid value slowly reduces, and is about 480 * 10 80% time in humidity ^-5Gfcm ²/ root.

Thus the result as can be known, during for the artificial hair 10 of embodiment 3, consistent with the bending rigid value of natural hair humidity 40% time, along with humidity rises, bending rigid value reduces, even if humidity 80% also shows the bending rigid value that extremely approaches natural hair.

Artificial hair 10 difference from Example 1 of embodiment 4 are that sheath/core Capacity Ratio is 1/2.Under the condition of humidity 40%, bending rigid value equates with natural hair, is 720 * 10 ^-5Gfcm ²/ root, humidity reach at 40～60% o'clock, and bending rigid value reduces, and is reduced to about 510 * 10 ^-5Gfcm ²/ root.Then, humidity is at 60～80% times, and bending rigid value slowly reduces, and is about 390 * 10 80% time in humidity ^-5Gfcm ²/ root.

The result as can be known thus, during for the artificial hair 10 of embodiment 4, consistent humidity 40% time with the bending rigid value of natural hair, along with humidity rises, bending rigid value reduces, and shows at the bending rigid value of humidity 80% near the minimum of a value of bending rigid value of natural hair.

The bending rigid value of the artificial hair 10 of embodiment 2～4 humidity 40% with show up and down than embodiment 1 lower value be since the capacity of the 1A of sheath portion greater than embodiment 1, be that the capacity of core 1B causes for a short time.Therefore, in artificial hair of the present invention,, can change the humidity dependence of bending rigid value by changing sheath/core Capacity Ratio.

Hence one can see that, and during for the artificial hair 10 of embodiment 2～4, consistent with the bending rigid value of natural hair humidity 40% time, along with humidity rises, bending rigid value reduces, and shows the humidity dependence that is similar to natural hair.

Artificial hair 10 difference from Example 1 of embodiment 5 are that the 1A of sheath portion is made of nylon 66, and other are identical.In embodiment 5, under the condition of humidity 40%, bending rigid value is bigger than natural hair, is 780 * 10 ^-5Gfcm ²/ root, humidity reach at 40～50% o'clock, and bending rigid value reduces substantially linearly, become about 650 * 10 50% time in humidity ^-5Gfcm ²/ root.And humidity reaches 50～80% times, and bending rigid value is reduced to about 600 * 10 with substantially identical with embodiment 1 slope ^-5Gfcm ²/ root.

Thus the result as can be known, during for the artificial hair 10 of embodiment 5, in the value that humidity shows greater than the bending rigid value of natural hair for 40% time, along with humidity rises, bending rigid value reduces.During for the artificial hair 10 of embodiment 5, bending rigid value shows the value greater than embodiment 1～4 in the scope of humidity 40%～50%.

Thus, the situation of the artificial hair 10 of embodiment 5 also shows the bending rigid value close with the bending rigid value of natural hair, and along with humidity rises, bending rigid value reduces, and shows the bending rigid value and the humidity dependence that are similar to natural hair.

The artificial hair of comparative example 1 is made of nylon 6, and line directly is that 80 μ m, elongation multiplying power are 3.3.During for this artificial hair, be about 510 * 10 at 40% time bending rigid value of humidity ^-5Gfcm ²/ root is about 70% value of natural hair.Along with humidity rises, bending rigid value reduces substantially simply, and humidity 80% time, bending rigid value is about 250 * 10 ^-5Gfcm ²/ root.This value is about 50% of natural hair.The bending rigid value of comparative example 1 is significantly less than the artificial hair of natural hair or embodiment 1～5 in the whole humidity range of measuring.

The artificial hair of comparative example 2 is made of nylon 6T, and line directly is that 80 μ m, elongation multiplying power are 5.5.During for this artificial hair, be about 980 * 10 at 40% time bending rigid value of humidity ^-5Gfcm ²/ root is about 136% bigger value of natural hair.Along with humidity rises, bending rigid value reduces substantially simply, and humidity 80% time, bending rigid value is about 860 * 10 ^-5Gfcm ²/ root.This value is natural hair about 170%.The bending rigid value of comparative example 2 is obvious artificial hair greater than natural hair or embodiment 1～5 in the whole humidity range of measuring.

Under the situation of comparative example 3, as mentioned above, peeling off of sheath 1A of portion and core 1B being taken place, can not use as artificial hair, does not therefore carry out the mensuration of bending rigid value.

The humidity dependence of bending rigid value of the artificial hair of embodiment 6～10 then, is described.Figure 13 is the dependent curve of humidity of the artificial hair bending rigid value of demonstration embodiment 6～10 and comparative example 1,4,5.Among the figure, transverse axis represents that humidity (%), the longitudinal axis represent bending rigid value (10 ^-5Gfcm ²/ root).Measuring temperature is 22 ℃.Among Figure 13, same with Figure 12, as the bending rigid value of natural hair, also shown its mean value, maximum and minimum of a value in the lump.The artificial hair 10 of embodiment 6 is that with the difference of embodiment 1 core 1B is made of nylon MDX6, and line directly is that 80 μ m, sheath/core Capacity Ratio are 1/7.

As shown in Figure 13, during for the artificial hair 10 of embodiment 6, the condition under humidity 40%, bending rigid value be with natural hair mean value equate substantially 730 * 10 ^-5Gfcm ²/ root, along with humidity rises, bending rigid value reduces at leisure.Humidity 60% time, bending rigid value is reduced to about 660 * 10 ^-5Gfcm ²/ root, humidity 80% time, bending rigid value is reduced to about 600 * 10 ^-5Gfcm ²/ root.

The result during for the artificial hair 10 of embodiment 6, shows the bending rigid value that equates substantially with the bending rigid value of natural hair 40% time in humidity as can be known thus, along with humidity rises, and the bending rigid value minimizing, demonstration is similar to the behavior of natural hair.That is, during for the artificial hair 10 of embodiment 6, show the bending rigid value and the humidity dependence that are similar to natural hair.

The artificial hair 10 of embodiment 7 is that with the difference of embodiment 6 sheath/core Capacity Ratio is 1/5, and other are identical.

As shown in Figure 13, during for the artificial hair 10 of embodiment 7, under the condition of humidity 40%, bending rigid value be with natural hair mean value equate substantially 730 * 10 ^-5Gfcm ²/ root, along with humidity rises near 50%, bending rigid value reduces, and is reduced to 620 * 10 ^-5Gfcm ²/ root.Then, humidity 60% time, bending rigid value slowly reduces, and is about 610 * 10 60% time in humidity ^-5Gfcm ²/ root.And then humidity 60～80% times, bending rigid value slowly reduces, and is about 560 * 10 80% time in humidity ^-5Gfcm ²/ root.

The result during for the artificial hair 10 of embodiment 7, shows the bending rigid value that equates substantially with the bending rigid value of natural hair 40% time in humidity as can be known thus, along with humidity rises, and the bending rigid value minimizing, demonstration is similar to the behavior of natural hair.That is, during for the artificial hair 10 of embodiment 7, show the bending rigid value and the humidity dependence that are similar to natural hair.

The artificial hair 10 of embodiment 8 is that with the difference of embodiment 6 sheath core Capacity Ratio is 1/4, and other are identical.

As shown in Figure 13, during for the artificial hair 10 of embodiment 8, under the condition of humidity 40%, bending rigid value be with the mean value of natural hair equate substantially 730 * 10 ^-5Gfcm ²/ root.In humidity is near 40%～60%, and bending rigid value reduces, and in humidity about 60% time, bending rigid value is reduced to 560 * 10 ^-5Gfcm ²/ root.

Then, humidity 60～80% times, bending rigid value slowly reduces, and humidity 80% time, is reduced to 490 * 10 ^-5Gfcm ²/ root.

The result during for the artificial hair 10 of embodiment 8, shows the bending rigid value that equates substantially with the bending rigid value of natural hair 40% time in humidity as can be known thus, shows the behavior that is similar to natural hair along with humidity rising, bending rigid value minimizing.

The artificial hair 10 of embodiment 9 is that with the difference of embodiment 6 sheath core Capacity Ratio is 1/3, and other are identical.

As shown in Figure 13, during for the artificial hair 10 of embodiment 9, under the condition of humidity 40%, bending rigid value be with the mean value of natural hair equate substantially 730 * 10 ^-5Gfcm ²/ root is near 40%～60% in humidity, and bending rigid value reduces, and is about 60% time in humidity, and bending rigid value is reduced to 530 * 10 ^-5Gfcm ²/ root.Then, humidity 60～80% times, bending rigid value slowly reduces, and humidity 80% time, is reduced to 440 * 10 ^-5Gfcm ²/ root.

The result during for the artificial hair 10 of embodiment 9, shows the bending rigid value that equates substantially with the bending rigid value of natural hair 40% time in humidity as can be known thus, shows the behavior that is similar to natural hair along with humidity rising, bending rigid value minimizing.

The artificial hair 10 of embodiment 10 is that with the difference of embodiment 6 sheath/core Capacity Ratio is 1/2, and other are identical.

As shown in Figure 13, during for the artificial hair 10 of embodiment 10, under the condition of humidity 40%, bending rigid value be with natural hair mean value equate substantially 730 * 10 ^-5Gfcm ²/ root.In humidity is near 40%～60%, and bending rigid value reduces, and is about 60% time in humidity, and bending rigid value is reduced to 490 * 10 ^-5Gfcm ²/ root.Then, humidity 60～80% times, bending rigid value slowly reduces, and bending rigid value is reduced to 380 * 10 ^-5Gfcm ²/ root.

The result during for the artificial hair 10 of embodiment 10, humidity 40% time, has the bending rigid value that equates substantially with the bending rigid value of natural hair as can be known thus, and along with humidity rises, bending rigid value reduces.If humidity surpasses near 60%, then the bending rigid value of artificial hair 10 is lower than the bending rigid value of natural hair, the bending rigid value of the artificial hair that the artificial hair that is constituted with the nylon 6 of above-mentioned comparative example 1 or the nylon MDX6 of aftermentioned comparative example 4 are constituted is compared, and then shows the behavior that is similar to natural hair.

The artificial hair of comparative example 4 is made of nylon MXD 6, and line directly is 80 μ m, and under the condition of humidity 40%, bending rigid value is 940 * 10 ^-5Gfcm ²/ root, near humidity 40～60%, bending rigid value reduces, and humidity 60% time, is reduced to 870 * 10 ^-5Gfcm ²/ root.And then humidity reaches 60～80%, and bending rigid value slowly reduces, and humidity 80% time, bending rigid value is reduced to 780 * 10 ^-5Gfcm ²/ root.The bending rigid value of comparative example 4 is in the whole humidity range of measuring, obviously greater than the artificial hair of natural hair or embodiment 6～10.

The artificial hair of comparative example 5 mixes 10% nylon 6 in MXD nylon, line directly is 80 μ m.Under the condition of humidity 40%, bending rigid value is 870 * 10 ^-5Gfcm ²/ root, near humidity 60%, bending rigid value reduces, and humidity 60% time, is reduced to 720 * 10 ^-5Gfcm ²/ root.And then humidity reaches 60～80%, and bending rigid value slowly reduces, and humidity 80% time, bending rigid value is reduced to 610 * 10 ^-5Gfcm ²/ root.The bending rigid value of comparative example 5 is in the whole humidity range of measuring, obviously greater than the artificial hair of natural hair or embodiment 6～10.

Figure 12 shows the bending rigid value of the artificial hair of comparative example 1 similarly in the lump, in the whole humidity range of measuring, is significantly less than the artificial hair of natural hair or embodiment 6～10.

As Figure 12 or shown in Figure 13, the bending rigid value of natural hair is different with manual manufacture, is easy to produce individual difference.And in the humidity of the bending rigid value of natural hair changed, the humidity dependence also produced mobility scale.The humidity of natural hair changes the bending rigid value that produced humidity 40% time, and minimum of a value is 660 * 10 ^-5Gfcm ²/ root, maximum are 740 * 10 ^-5Gfcm ²/ root, this amplitude of fluctuation are 80 * 10 ^-5Gfcm ²/ root.Humidity is 60% o'clock, and minimum of a value is 520 * 10 ^-5Gfcm ²/ root, maximum are 660 * 10 ^-5Gfcm ²/ root, amplitude of fluctuation are 140 * 10 ^-5Gfcm ²/ root, it is the big amplitude of fluctuation of humidity ratio 40%.And then humidity 80% time, amplitude of fluctuation enlarges, and minimum of a value is 420 * 10 ^-5Gfcm ²/ root, maximum reach 600 * 10 ^-5Gfcm ²/ root.

According to the artificial hair 10 of embodiment 1～10, be nylon 6 or nylon 66 by making sheath, making core is nylon 6T or nylon MXD 6, and changes its sheath core Capacity Ratio, can obtain the artificial hair 10 that bending rigid value and humidity dependence thereof are similar to natural hair.By Figure 12 and Figure 13 as can be known, the bending rigid value that use nylon 6T or nylon MDX6 at core 1B, approaches the artificial hair 10 that 1/2 value makes with sheath/core Capacity Ratio is near the minimum of a value of the bending rigid value of natural hair, and the bending rigid value that with sheath/core Capacity Ratio is near make 1/7 artificial hair 10 is near the maximum of the bending rigid value of natural hair.

Thus, at core 1B is that semiaromatic polyamide composition resin, the 1A of sheath portion are in the artificial hair 10 of sheath/cored structure of fatty polyamide resin, when the Capacity Ratio of sheath/core is in 1/2～1/7 the scope, obtain to approach the artificial hair of behavior of the bending rigid value of natural hair.As shown in Table 1 and Table 2, the sheath/core weight ratio of the artificial hair of making in sheath/core Capacity Ratio is 1/2～1/7 scope 10 is in 10/90～35/65 scope.

Particularly, be nylon 6, when core is the artificial hair 10 of nylon MDX6, between the maximum and minimum of a value of the bending rigid value under 22 ℃ of temperature, the humidity 40～50%, show the behavior approach its mean value when the sheath that makes embodiment 6～10 at natural hair.In humidity is humidity range more than 50%, the bending rigid value of the artificial hair 10 of embodiment 6,7 is the peaked behavioural trait that approaches the natural hair bending rigid value, the bending rigid value of the artificial hair 10 of embodiment 8 is the behavioural trait that approaches the mean value of natural hair bending rigid value, and the bending rigid value of the artificial hair 10 of embodiment 9,10 is the behavioural trait that approaches the minimum of a value of natural hair bending rigid value.

Then, the variation that moisture absorption produced by the artificial hair of embodiment is described.

Artificial hair, (B) natural hair, (C) have used the initial conditions of curling of the artificial hair of polyester in the past, the figure of drying regime after being immersed in the state in the water and being immersed in the water to Figure 14～Figure 16 according to an embodiment of the invention for expression (A) respectively.Each hair has been pricked at an upper portion thereof, and drying is undertaken by air dry.

As shown in figure 14, any hair is equal length, is in the state that is curled with identical crimp diameter.If be immersed in the water, the artificial hair 1,10 of embodiment is because absorption moisture stretches and its length variations also shows the variation that approaches natural hair (with reference to Figure 15 (A) and (B)).Relative therewith, for the artificial hair that has used polyester, because hygroscopicity is poor, so artificial hair can not stretch the disintegration of therefore curling, different with the behavior of natural hair (with reference to Figure 15 (C)).

Carry out after in impregnated in water under the dry status, the artificial hair 1,10 of embodiment returns back to the initial conditions that is curled once more, shows the variation approach natural hair (with reference to Figure 16 (A) and (B)).Though not shown, for by the artificial hair that material constituted beyond the polyester, for example if when in water, getting wet, the basic stretching, extension of curling, even and if under placing naturally, removing moisture, also be difficult to be back to original curling.

Hence one can see that, even if artificial hair of the present invention 1,10 is for to have curling state, and the stretching, extension of curling when in water, getting wet and be the behavior of similar natural hair by the curling answer degree of placing naturally when removing moisture.

According to the artificial hair 10 of the foregoing description 1～10, at the mean value of 22 ℃, 40% time bending rigid value of humidity and natural hair promptly 720 * 10 ^-5Gfcm ²/ root unanimity shows very close value.And along with humidity rises to 80%, the reduction behavior of bending rigid value is also very near natural hair.And, in fact in the artificial hair when in water, getting wet 10, the stretching, extension of curling and be the behavior of similar natural hair by the curling answer degree of placing naturally when removing moisture.

Embodiment 11

Same with artificial hair 10 shown in the embodiment 1～10, make the different artificial hair of diameter 10 respectively, make wig shown in Figure 5.Suitably dispose the different artificial hair of diameter, the design of the part by curling hair to be to have the outward appearance near natural hair, makes when planting or the Shi Buhui that periwigs seems factitious wig.According to wearer and observer's evaluation on every side, sensation (outward appearance, sense of touch, amount sense) is very natural, under the state that is drenched by rainwater or shower, shown in Fig. 6, Figure 14～16, sensation such as the submissive degree of hair, curling opening degree, outward appearance, sense of touch, amount sense can be not different with the natural hair of wearer itself, hair can not take place yet separate, can very cosily dress.

According to the foregoing description, artificial hair constructed in accordance bending rigid value and the mean value of natural hair promptly 720 * 10 under 22 ℃, humidity 40% ^-5Gfcm ²/ root unanimity perhaps can obtain very close value, and along with humidity rises, the reduction behavior of bending rigid value is also very near natural hair.

Thus, the sensation (outward appearance, sense of touch, texture) of using artificial hair 1 of the present invention or 10 wigs of making 40 is all near natural hair, and therefore the characteristic variations when getting wet under high humidity or in water can dress with the sensation of nature also near natural hair.

The present invention is not limited to the foregoing description, can carry out various changes in the invention scope that claims are put down in writing, and they also are included in the scope of the present invention.For example, polyamide can suitably be selected according to the mode that can obtain desired flexural rigidity value etc.

Claims (12)

1. artificial hair, it is characterized in that, it has by core and coats sheath/cored structure that the sheath portion of this core is constituted, described core is made of the semiaromatic polyamide composition resin, described sheath portion is made of the flexural rigidity straight chain representative examples of saturated aliphatic polyamide lower than described core, and the sheath of described sheath portion and core/core weight ratio is 10/90～35/65.

2. artificial hair according to claim 1 is characterized in that, the surface of described artificial hair has micro concavo-convex portion to carry out delustring.

3. artificial hair according to claim 2 is characterized in that, described micro concavo-convex portion forms by spherocrystal and/or inject process.

4. artificial hair according to claim 1 is characterized in that, the alternate copolymer that described semiaromatic polyamide composition resin is hexamethylene diamine and terephthalic acid (TPA) or the alternate copolymer of m-phenylene diamine (MPD) and adipic acid.

5. artificial hair according to claim 1 is characterized in that, described straight chain representative examples of saturated aliphatic polyamide is the alternate copolymer of caprolactam ring-opening polymerization polymer and/or hexamethylene diamine and adipic acid.

6. artificial hair according to claim 1 is characterized in that described artificial hair contains pigment and/or dyestuff.

7. wig, it contains the wig substrate and plants at the suprabasil artificial hair of this wig, it is characterized in that, described artificial hair has by core and coats sheath/cored structure that the sheath portion of this core is constituted, described core is made of the semiaromatic polyamide composition resin, described sheath portion is made of the flexural rigidity straight chain representative examples of saturated aliphatic polyamide lower than described core, and the sheath of described sheath portion and core/core weight ratio is 10/90～35/65.

8. wig according to claim 7 is characterized in that, the surface of described artificial hair has micro concavo-convex portion to carry out delustring.

9. wig according to claim 8 is characterized in that, described micro concavo-convex portion forms by spherocrystal and/or inject process.

10. wig according to claim 7 is characterized in that, the alternate copolymer that described semiaromatic polyamide composition resin is hexamethylene diamine and terephthalic acid (TPA) or the alternate copolymer of m-phenylene diamine (MPD) and adipic acid.

11. wig according to claim 7 is characterized in that, described straight chain representative examples of saturated aliphatic polyamide is the alternate copolymer of caprolactam ring-opening polymerization polymer and/or hexamethylene diamine and adipic acid.

12. wig according to claim 7 is characterized in that, described artificial hair contains pigment and/or dyestuff.

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