CN106840906A - Hair elastic force assay method - Google Patents
Hair elastic force assay method Download PDFInfo
- Publication number
- CN106840906A CN106840906A CN201610951449.5A CN201610951449A CN106840906A CN 106840906 A CN106840906 A CN 106840906A CN 201610951449 A CN201610951449 A CN 201610951449A CN 106840906 A CN106840906 A CN 106840906A
- Authority
- CN
- China
- Prior art keywords
- hair
- elastic force
- assay method
- vertical
- horizontal plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0033—Weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Biophysics (AREA)
- Hematology (AREA)
- Molecular Biology (AREA)
- Urology & Nephrology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
Abstract
The present invention relates to a kind of hair elastic force assay method, one end of hair is fixed to vertical plane (V) and utilizes vertical range (y) of the hair because of gravity from horizontal plane (H) inclined angle (θ) and away from horizontal plane (H) to be measured.Hair elastic force assay method of the invention, with merely with hair compared with the existing method that the angle of vertical plane is qualitatively compared assessment to hair elasticity, further contemplate hair weight and hair inclined vertical range and pass through the elasticity that numerical expression calculates hair, so analysis can be compared to accurate quantitative numerical value.Also, compared with the existing method that need to be for several times determined to substantial amounts of hair sample to improve reliability in stress-strain diagram result, the present invention is to calculate quantitative numerical value by numerical expression, therefore with the effect that can reduce required time and make great efforts.
Description
Technical field
The present invention relates to a kind of hair elastic force assay method, more specifically, it is related to a kind of be fixed to one end of hair
Vertical plane and using hair because the weight of angle of the gravity from horizontal plane, the vertical range away from horizontal plane and hair is surveyed
Fixed hair elastic force assay method.
Background technology
Known hair can be damaged because of friction, heat, physics cutting, hair-waving, decolouring, dyeing, daylight etc..First, in hair
In the case of being damaged because of heat, when being dried after cleaning hair, because of the heat produced by drying machine, moisture evaporation is dried, from
And hair expands and deforms, black hair discoloration is dark brown.Also, beginning produces gas in the cortex and water quality of hair
Bubble and hair follows the string, the epidermis of hair melts.Second, the hair situation impaired because of hair-waving be because permanent wave solution treatment not
Good, standing time is not enough etc. and causes, and can make hair tender, or in the case of remaining alkali or oxidant in hair, meeting
Cause the modification of keratoprotein (Keratin) and the colour fading of melanin.3rd, in addition to alkaline agent plays a role as decolorising agent,
The melanin formed by hydrogen peroxide plays oxidative decoloration and acts on.If being repeated exposure to decolorising agent in a short time, hair is anti-
Multiple swelling, soften or hair skin deformation and bend so that the reason for turning into impaired.Finally, because of sunray in it is infrared
The keratoprotein of line and ultraviolet and hair is impaired or causes protein to modify.
Generally, hair is made up of the keratoprotein containing the NAC 14% to 18% in 18 kinds of amino acid.These angles
Matter albumen is a kind of very strong protein under such as temperate condition of water or neutral flux, but can be because such as combing, hair-dryer
The excessive physical chemistry of heat, dyeing, hair-waving etc. is processed and is easily damaged.Recently, because frequently perm, dyeing etc. physics because
The various factors such as element, chemical factor or environmental factor and damaged hair, therefore produce that hair is roughening, it is moist to lose and flexibility
Decline, frictional force increases and the arrangement of hair becomes difficult, hair and disconnects or the problems such as hair tip bifurcated, while produce hair to attenuate,
Follow the string and debility, collapse and the problem without curve sense.
In order to solve this kind of problem, lasting research is used to improve in hair washing or after hair washing the flexibility of hair, recovers simultaneously
The product of the impaired hair of reinforcing, and attempt and develop various methods and practical.However, truth is arrived to have no in development and application
Quantitatively the moist of hair, flexibility and elasticity can quantize exactly method before the product of hair.
In this regard, the present inventor will be used to the elastic force for determining hair method be conceived to want to revert to elastomer it is original
The related physical law of the power and deformation extent of state is Hooke's law and completes the present invention.
[prior art literature]
[patent document]
No. 2013-0031670 " hair-dressing cosmetics carried out using XRF of (patent document 1) Korean Patent Laid
The hair adsorbing quantity measuring method of the silicon in composition "
The content of the invention
[the invention problem to be solved]
The existing method for determining hair elastic force is as follows.First, two ends of hair are fixed to using holder
After stretching strength determination equipment, stretched and obtained stress-strain diagram (Stress-strain curve) result, described
Obtained in Dependence Results elastic (N/m).The assay method can obtain drafting results, while elastic force result can be quantitatively obtained,
But cannot consider to the quality of hair, thickness and the related parameter of length, therefore in order to improve the reliability of result, need to be to a large amount of
Hair sample determined for several times.Also, not only it is difficult to be fixed in hair the holder of stretching sensing equipment, and needs
Relatively long minute, so in the presence of asking for being taken a long time when being determined for several times using substantial amounts of hair sample
Topic.
Elastic force it is an object of the invention to derive hair with quantitative numerical value, another object of the present invention is to both reduce
Experiment number, derives accurate measured value and more easily improves the reliability of result again.
[means to solve the problem]
The present invention is proposed to solve the above problems, there is provided a kind of one end of hair to be fixed into vertical plane and is utilized
The hair elastic force that hair is measured by the weight of angle of the gravity from horizontal plane, the vertical range away from horizontal plane and hair
Assay method.
More specifically, hair elastic force assay method of the invention comprises the following steps：I) by one end of hair according to straight
The step of angle is fixed to vertical plane；Ii) hair because of gravity from horizontal plane the step of；Iii the hair institute) is described
The step of second tangent line of the other end of first tangent line and hair of fixed one end；Iv prolonging from first tangent line) is described
The step of vertical line (perpendicular) of the position that line long intersects with the extended line of second tangent line to the hair
Suddenly；V) the step of determining from the intersection point of the vertical line vertical range (y, the rice (m)) to the horizontal plane；Vi) describe from
The step of straight line one end that the intersection point of the vertical line is fixed to the hair；And vii) determine the straight line with it is described
The step of angle (θ, degree (°)) that horizontal plane is formed；And elasticity (k, elasticity system of hair are obtained by following numerical expressions 2
Number (N/m)) and determine the elastic force of hair；
Numerical expression 2) ky=mgsin (90 ° of-θ)
(wherein, m is the quality (kg) of hair, and g is acceleration of gravity (m/sec2))。
[The effect of invention]
Hair elastic force assay method of the invention, with merely with hair relative to vertical plane angle qualitatively
The existing method that assessment is compared to the elasticity of hair is compared, it is also contemplated that weight and the hair institute of hair it is inclined it is vertical away from
From and pass through the elasticity that numerical expression calculates hair, therefore analysis can be compared to accurate quantitative numerical value.
Also, needed with order to improve reliability in the result of stress-strain diagram (Stress-strain curve)
The existing method determined for several times to substantial amounts of hair sample is compared, and the present invention is to calculate quantitative numerical value by numerical expression,
Therefore the effect for having the time required to can reducing and making great efforts.
Brief description of the drawings
Fig. 1 is the image of the method for existing measure hair elastic force.
Fig. 2 is the concept map of the method for measure hair elastic force of the invention.
Fig. 3 is the concept map of the application trigonometric function in the method for measure hair elastic force of the invention.
Fig. 4 is one embodiment of the invention, and is the work that hair is fixed to vertical plane in order to determine the elastic force of hair
Industry image.
Fig. 5 is one embodiment of the invention, and is the work for carrying out image conversion using camera in order to determine the elastic force of hair
Industry image.
Fig. 6 is one embodiment of the invention, and is using the present invention in the image obtained by image conversion is carried out using camera
Measure hair elastic force method flow diagram picture.
Fig. 7 is one embodiment of the invention, and is the normal distribution by determining result derived from the method for hair elastic force
Curve.
Specific embodiment
The present invention relates to a kind of hair elastic force assay method, more specifically, it is related to a kind of be fixed to one end of hair
Vertical plane and using hair because the weight of angle of the gravity from horizontal plane, the vertical range away from horizontal plane and hair is surveyed
Fixed hair elastic force assay method.
If hanging counterweight in spring, the situation of the spring elongation because of the weight of counterweight can be observed.As described above, bag
The deformation extent that spring is included in interior elastomer is directly proportional to the power of the form for wanting to revert to original, i.e. elastic force.With this phase
Close, Hooke's law (Hooke ' s law) as the degree (x) of distortional elastomer because of external force (mg) with want to revert to it is original
Elastic force (the F of stateElastic force) law that is directly proportional in the range of fixed external force, with following numerical expressions 1) represent.The present invention in order to
Quantitatively derive the elasticity of hair and apply and be suitable to the Hooke's law (Hooke ' s law) of the elastomer；
Numerical expression 1) kx=mg
(wherein, m is the quality (kg) of hair, and g is acceleration of gravity (m/sec2))。
In the present invention or this specification, " elastic force " or " elasticity " of hair is wanted from scalp surface with right angle as hair
The hair characteristics of (Straight) support, are " k (rigidity with coefficient of elasticity in the Hooke's law as the crow flies
(Stiffness) it is) " relevant, want to be played a role to the rightabout of gravity from scalp surface holding right angle condition with hair
Restoring force be FElastic forceHave differences.Therefore, the present invention calculates the coefficient of elasticity " k " of Hooke's law and determines the elastic force of hair
(elasticity).
Also, in the present invention or this specification, the quality (m) or weight (mg) of hair are to include remaining being coated on reality
Test the product composition of subject sample and be more than the quality of actual hair quality in itself or the all-inclusive concept of weight.
Also, in the present invention or this specification, each numerical value for being applied to numerical expression is used as SI units
The International System of Units (International System of Units, SI) base unit.
Hereinafter, with reference to the preferred embodiments of the present invention and accompanying drawing, the present invention will be described in detail.On the other hand, it is
The clear and definite present invention and omit the content with compositions of the invention unrelated, it is necessary to what is illustrated is that identical reference marks is represented in figure
Identical inscape.
It is existing, as shown in figure 1, being fixed in the state of vertical plane by one end of hair, only determine hair and inclined
Angle and predict the elastic force of hair, therefore truth is the quantitative result that cannot obtain hair elastic force.However, the present invention is proposed
It is a kind of not only to determine the inclined angle of hair institute, and hair is determined away from the vertical range of horizontal plane and the gravimetric value of hair
The Hooke's law of deformation of the invention is applied to determine the elastic method of hair.
If reference picture 2 and hair elastic force assay method of the invention is illustrated in more detail, it is as follows：First,
If one end a of hair is fixed into vertical plane V according to right angle, the other end b of loose hair is sagging because of gravity, from
And hair with respect to the horizontal plane H inclinations.In the state of inclining in this way, first is described in one end a of the hair fixed
Tangent line, the second tangent line is described in the other end b of the hair for hanging low, and the extended line of first tangent line and the second tangent line is determined afterwards
Intersecting position o and describe the vertical line to hair (Perpendicular).If determining the intersection point of vertical line in this way
P, then determine beeline, the i.e. vertical range y from the position of the intersection point to the horizontal H in units of rice m, and
And describe the straight line from the intersection point p of vertical line to one end a that the hair is fixed and determine the straight line with the level
The angle (θ, (degree)) that face H is formed.The angle is applied to be conceived to it is of the invention following obtained by Hooke's law
Numerical expression 2) and quantitatively calculate the elasticity (k, coefficient of elasticity (N/m)) of hair；
Numerical expression 2) ky=mgsin (90 ° of-θ)
(wherein, m is the quality (kg) of hair, and g is acceleration of gravity (m/sec2))。
As one embodiment of the invention, in order to determine the elastic force of hair, it is determined that being cut with second away from from the first tangent line A
The vertical range y of the position p obtained by the vertical picture vertical lines of the intersecting position o of the extended line of line B, but the vertical range is used as expression hair
The yardstick of the degree because of gravity away from horizontal H is sent out, as long as being the distance that objectively can be compared to measure object hair,
Any position can then be set.For example, in the present invention, vertical range y is alternatively the centre position (1/ from hair total length (ab)
2ab) the vertical range to horizontal H.
Fig. 3 is to illustrate the numerical expression 1 for being used to determine hair elastic force of the invention) deform and next foundation from Hooke's law
Figure, the vertical plane V of Fig. 2 to be assumed to be the surface of scalp, and when line segment ap is assumed to be into hair, in order to from the surface of scalp
V keeps the hair ap of right angle condition to be inclined because of gravity " θ ", therefore the angles that are constituted with hair ap of surface V of scalp are
“90°-θ”.In order to the Hooke's law is applied into hair elastic force assay method, the present invention imports sin functions, if hair
Elastic force is excellent and 90 ° of-θ get over close to 90 °, i.e. θ and converge to 0 °, then sin (90 ° of-θ) ≈ 1.If on the contrary, elastic force it is poor and
90 ° of-θ get over close to 0 °, i.e. θ and converge to 90 °, then sin (90 ° of-θ) ≈ 0.
In order to verify hair elastic force assay method of the invention, perform<Embodiment 1>The step of.
<Embodiment 1>
Preparation standard hair (manufacturing company：Japanese Beaulax companies)
Above-mentioned Japanese Beaulax companies manufacture various hairs (actual human body hair) according to standard basis, therefore can be by this
Standard hair used in experiment replaces actual human body hair and applies.
Setting number of hairs required when once determining
Can be sample with the hair of 1 or 2 to 5 to determine the elastic force of hair of the invention, but generally human body
Statistics is formed with the hair of less than 3 in scalp pore, therefore implements to determine preferably with 3.Hereinafter, in order to people's chaeta
Clockwork spring part is identical, and hair elastic force determination test is carried out using 3.
Elasticity measurement
Fig. 4 to Fig. 5 is one embodiment of the invention, as shown in figure 4, by the side end of 3 hairs according to right angle
It is fixed to and make hair as the wall of vertical plane because gravity is inclined from horizontal H.As shown in figure 5, using camera by this kind of shape
State image conversion.On the basis of the photo obtained by image conversion in the manner described above and as shown in Fig. 6 from hair is fixed
Initial point describes the first tangent line, and determines that the extended line of each tangent line intersects from the loose tangent line of another tip representation second of hair
Position.Hang down picture vertical line from the position and after determining the position (intersection point of vertical line) connected with inclined hair, determine from
Vertical range y of the position to the horizontal plane of the position of fixed hair, the position is connected with fixed institute using straight line
State between the position of hair and determine the angle, θ that the straight line is formed with the horizontal plane of the position of the fixation hair.
Measurement result is as follows.
Y=0.01m
θ=30 °
M=0.0000016kg
Based on the measurement result, using the numerical expression 2) obtain the elasticity (k) of hair.
K=0.167mN/m
On the other hand, the process of enhancing hair elastic force is as follows.In order to strengthen the elastic force of hair, product is strengthened using elastic force
(for example, elastic force shampoo) is processed.Therefore, the infiltration of product has functional component and it is adsorbed onto the inside of hair/outer
Portion and strengthen the elastic force of hair, the functional component of product contributes to the hair can be relative to scalp surface close to squarely supporting.Its
It is secondary, in order to determine as hair rubbery product using our company hair elastic force promote shampoo carry out before processing and treatment after
Hair elasticity, according to embodiment 2 implement test.
<Embodiment 2>
In order to determine it is corresponding with the quality (m) or weight (mg) of hair elasticity (k), with water process hair (control group),
Carry out the hair (experimental group 1) of single treatment and promote shampoo using hair elastic force using hair elastic force enhancement shampoo to carry out
The hair (experimental group 2) for processing twice utilizes the hair elastic force assay method to determine elasticity for sample.
[table 1]
Confirm the validity
Fig. 7 is the result of elasticity (k) value for confirming embodiment 2 with normal distribution curve by being repeated a number of times experiment
Figure.Confirm the experimental group 1 and the hair of experimental group 2 for compared with control group, being processed using elastic force enhancement shampoo
Elasticity enhancing, its result verification goes out the quantitative number that can derive elasticity within error range by the experiment of 20 times or so
Value.
The hair for even being obtained from same wisp of hair (Tress) or from same people, its fineness degree, length, shape
Differ widely.Value of elastic is influenceed by hair form, so an elastic force determination experiment result cannot define sample.Therefore, need
Repeatedly determined, and need to statistically be met normal distribution curve.Hair elastic force assay method of the invention is confirmed to every
Individual hair sample carries out 20 times and tests and meet normal distribution curve.
Claims (4)
1. a kind of hair elastic force assay method, it is characterised in that：By one end of hair be fixed to vertical plane (V) and utilize hair because
Vertical range (y) of the gravity from horizontal plane (H) inclined angle (θ) and away from horizontal plane (H) is measured.
2. hair elastic force assay method according to claim 1, it is characterised in that comprise the following steps：
I) the step of one end (a) of hair being fixed to vertical plane (V) according to right angle；
Ii the step of) hair is inclined because of gravity from horizontal plane (H)；
Iii the second tangent line of the other end (b) of first tangent line (A) and hair of one end (a) that the hair is fixed) is described
(B) the step of；
Iv the position (o) intersected with the extended line of second tangent line (B) from the extended line of first tangent line (A)) is described extremely
The step of vertical line untill the hair；
V) the step of determining from the intersection point (p) of the vertical line vertical range (y) to the horizontal plane (H)；
Vi the step of) describing the straight line the one end (a) fixed to the hair from the intersection point (p) of the vertical line；And
Vii the step of) determining angle (θ) that the straight line is formed with the horizontal plane (H).
3. hair elastic force assay method according to claim 2, it is characterised in that also comprise the following steps：Viii) pass through
The step of following numerical expressions 2 calculate the elastic k of hair；
Numerical expression 2
Ky=mgsin (90 ° of-θ)
Wherein, k is the elasticity of hair, and m is the quality of hair, and g is acceleration of gravity, the definition of y and θ foundation claims 2.
4. hair elastic force assay method according to claim 1, it is characterised in that：
The hair is 1 or 2 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0151451 | 2015-10-30 | ||
| KR1020150151451A KR102394660B1 (en) | 2015-10-30 | 2015-10-30 | Method of Measuring Hair Elasticity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106840906A true CN106840906A (en) | 2017-06-13 |
| CN106840906B CN106840906B (en) | 2020-07-24 |
Family
ID=58741242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610951449.5A Active CN106840906B (en) | 2015-10-30 | 2016-10-27 | Method for measuring hair elasticity |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102394660B1 (en) |
| CN (1) | CN106840906B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102394533B1 (en) * | 2017-09-29 | 2022-05-06 | (주)아모레퍼시픽 | Method for Screening Materials which Increase Hair Volume |
| KR102374865B1 (en) * | 2020-10-07 | 2022-03-18 | 서울대학교산학협력단 | Genetic polymorphic markers for predicting tensile strength or elasticity of human hair use thereof |
| KR20230147375A (en) | 2022-04-14 | 2023-10-23 | 주식회사 스킨메드 | Method for evaluating hair or fiber elasticity improvement rate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048386A (en) * | 1990-04-26 | 1992-01-13 | Naoki Honma | Driving device of hair cutter |
| WO2004070359A1 (en) * | 2003-02-04 | 2004-08-19 | Brookfield Engineering Laboratories, Inc. | Yield test method and apparatus |
| CN102789726A (en) * | 2012-08-02 | 2012-11-21 | 首都医科大学 | Teaching experiment device and method for biology strip-shaped material mechanical property test |
| CN104244767A (en) * | 2012-04-02 | 2014-12-24 | 株式会社百客美 | Hair measurement tool |
| CN104819900A (en) * | 2015-05-18 | 2015-08-05 | 齐齐哈尔大学 | Cross metal wire elastic modulus measuring device and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6238343A (en) * | 1985-08-14 | 1987-02-19 | Kanebo Ltd | Measuring method for heair characteristic |
| JPH03293539A (en) * | 1990-04-11 | 1991-12-25 | Kao Corp | Hair nature measuring apparatus |
| JPH04344575A (en) * | 1991-05-21 | 1992-12-01 | Hitachi Ltd | Modellling method and apparatus for hair of head |
| JP2000162203A (en) * | 1998-11-25 | 2000-06-16 | Pola Chem Ind Inc | Evaluation method for hair cosmetics |
| JP4690021B2 (en) * | 2004-11-30 | 2011-06-01 | 株式会社コーセー | Method for measuring the mechanical properties of hair samples |
| FR2898712B1 (en) * | 2006-03-17 | 2009-04-10 | Oreal | METHOD AND SYSTEM FOR GENERATING A SYNTHESIS IMAGE OF AT LEAST ONE HAIR |
| KR20130031670A (en) | 2011-09-21 | 2013-03-29 | (주)아모레퍼시픽 | Measurement of hair adsorption amount of silicon contained in hair cosmetic composition using xrf |
| WO2014117907A1 (en) * | 2013-02-01 | 2014-08-07 | Unilever Plc | Method |
| JP2017040578A (en) * | 2015-08-20 | 2017-02-23 | 国立大学法人大阪大学 | Method of evaluating hair |
| KR102406640B1 (en) * | 2015-09-30 | 2022-06-08 | (주)아모레퍼시픽 | Age evaluating method of scalp and hair |
-
2015
- 2015-10-30 KR KR1020150151451A patent/KR102394660B1/en active IP Right Grant
-
2016
- 2016-10-27 CN CN201610951449.5A patent/CN106840906B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048386A (en) * | 1990-04-26 | 1992-01-13 | Naoki Honma | Driving device of hair cutter |
| WO2004070359A1 (en) * | 2003-02-04 | 2004-08-19 | Brookfield Engineering Laboratories, Inc. | Yield test method and apparatus |
| CN104244767A (en) * | 2012-04-02 | 2014-12-24 | 株式会社百客美 | Hair measurement tool |
| CN102789726A (en) * | 2012-08-02 | 2012-11-21 | 首都医科大学 | Teaching experiment device and method for biology strip-shaped material mechanical property test |
| CN104819900A (en) * | 2015-05-18 | 2015-08-05 | 齐齐哈尔大学 | Cross metal wire elastic modulus measuring device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106840906B (en) | 2020-07-24 |
| KR20170050212A (en) | 2017-05-11 |
| KR102394660B1 (en) | 2022-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106840906A (en) | Hair elastic force assay method | |
| JP6568796B2 (en) | Method for evaluating moisture retention of stratum corneum | |
| Plante et al. | Fiber hygroscopicity and perceptions of dampness: part I: subjective trials | |
| US20160022022A1 (en) | Method to measure and/or adjust combing resistance by using a brush | |
| US8379015B2 (en) | Method and a system for generating a synthesized image of a hair | |
| JP2020510033A (en) | Chemical composition | |
| EP2375981B1 (en) | Method for assessing the damage of keratin fibers | |
| WO2005106464A1 (en) | Methods of assessing characteristics of fibrous substrates and treating fibrous substrates | |
| US5419627A (en) | Illuminated cabinet for sensory evaluations | |
| CN101801338B (en) | Hair cosmetic composition | |
| CN108918411A (en) | A kind of paint film test method | |
| CN106662550A (en) | Brush sensor for measuring static charge of fibers | |
| Dias et al. | Protective effect of conditioning agents on Afro‐ethnic hair chemically treated with thioglycolate‐based straightening emulsion | |
| KR102390840B1 (en) | Apparatus for rating hair damage degree and method for rating hair damage using thereof | |
| US8607629B2 (en) | Method for assessment of force properties generated by the fiber tip | |
| JP5166553B2 (en) | Method for evaluating the electrostatic properties of fibers | |
| JP2005134344A (en) | Sample for evaluating bending characteristic of hair | |
| CN104434569B (en) | A kind of pigment breast and preparation method thereof | |
| Laden et al. | Torsional measurements on skin | |
| JPH0763415B2 (en) | How to evaluate the effects of hair styling products | |
| KR20230147375A (en) | Method for evaluating hair or fiber elasticity improvement rate | |
| Hahn | How Heat Affects Human Hair: Thermal Characterization and Predictive Modeling of Flat Ironing Results | |
| JP2000162203A (en) | Evaluation method for hair cosmetics | |
| JP2010276558A (en) | Method for evaluating flexibility of hair | |
| CN104434646A (en) | Diffused bath oil and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |