JP7341284B1 - Absorbency evaluation equipment and evaluation method - Google Patents

Abstract

An object of the present invention is to provide an absorbency evaluation device and an evaluation method for properly and easily evaluating the absorption performance of underwear. An absorbency evaluation device is used to evaluate the absorption performance of underwear. The absorbency evaluation instrument includes a main body waist part and a pair of main body thigh parts. The main body waist is a hollow body having a shape imitating the waist of a human body. A pair of main body thigh parts are provided at the main body waist part. The main body waist part is an opening between the pair of main body thigh parts, which has a crotch opening that exposes the inner surface of the underwear to be evaluated as an evaluation object to the absorbency evaluation instrument upward so that it can be seen or touched at least. including. [Selection diagram] Figure 3

Description

The present disclosure relates to an absorbency evaluation device and an evaluation method used to evaluate the absorption performance of lower body underwear.

BACKGROUND ART Underwear for the lower body (for example, shorts, pants, etc., hereinafter also simply referred to as underwear) that has water absorption properties is known. Absorbent type sanitary shorts, which are women's underwear with water absorption properties, are underwear whose short bodies have the function of absorbing water, and are also referred to as water-absorbent sanitary shorts (hereinafter referred to as water-absorbent shorts). Water-absorbing shorts can be used not only as a countermeasure against bleeding due to menstruation, but also as a countermeasure against so-called urine leakage. As a countermeasure against urine leakage, men's underwear having water absorption properties (hereinafter also referred to as water absorption pants) is also known. With the spread of such water-absorbent underwear, there is a need for a technique for appropriately evaluating the absorbent performance of underwear.

For example, Patent Document 1 below proposes an evaluation method in which a sanitary napkin and shorts are attached to a female waist model, pseudo blood is injected from a tube, and the amount of absorption by the sanitary napkin is measured. For example, Patent Document 2 below describes an evaluation method in which a diaper is attached to a baby doll with a small hole connected to a pipe in the crotch, artificial urine is injected through the pipe, and the amount of absorption by the diaper is measured. Proposed.

Japanese Patent Application Publication No. 5-285172 Japanese Patent Application Publication No. 9-253126

Similar to the baby doll described above, it is thought that in the female waist model described above, a small hole connected to a tube is placed in the crotch of the female waist model, and pseudo blood is injected from the tube. For example, a method can be considered in which underwear is attached to a waist model in which a small hole connected to a tube is placed in the crotch, and the absorption performance of the attached underwear is evaluated.

Absorption performance can be evaluated by visually checking for seepage when a simulated body fluid simulating menstrual blood, urine, etc. is dropped onto the underwear to be evaluated, or by checking for backflow by touching with a finger.
However, in the evaluation method using the above-mentioned waist model in which a small hole connected to a tube is placed in the crotch, the absorption state cannot be determined visually or by touch with the underwear being evaluated on the waist model. A problem arises. In order to judge the state of absorption, it is necessary to remove the underwear to be evaluated from the waist model and put it back on each time. By repeating putting on and taking off the underwear in this way, for example, the water-absorbing part of the underwear may stick to other things, the underwear may stretch, or the underwear may come into contact with other things, which may cause leakage or water retention that should be evaluated. There may be problems that the evaluation procedure becomes complicated and the evaluation procedure becomes complicated.

One aspect of the present disclosure provides an absorbency evaluation instrument and evaluation method that appropriately and easily evaluates the absorption performance of underwear.

The absorbency evaluation device according to one aspect of the present disclosure is used to evaluate the absorbency performance of underwear. The absorbency evaluation instrument includes a main body waist part and a pair of main body thigh parts. The main body waist is a hollow body having a shape imitating the waist of a human body. A pair of main body thigh parts are provided at the main body waist part. The main body waist part has a crotch opening between the pair of main body thigh parts that exposes the inner surface of the underwear that is to be evaluated as an evaluation object to the absorbency evaluation instrument at least upwardly so that it can be seen or touched. including.

In such an absorbency evaluation device, the crotch opening exposes the inner surface of the underwear to be attached to the absorbency evaluation device upward so that it can at least be visually or touched. Therefore, in order to evaluate the absorption properties of underwear, there is no need to repeatedly attach and remove the underwear from the absorbency evaluation instrument. As a result, the absorbent performance of the underwear attached to the absorbency evaluation device can be appropriately and easily evaluated.

An evaluation method according to another aspect of the present disclosure is an evaluation method using an absorbency evaluation instrument used to evaluate the absorption performance of underwear. The absorbency evaluation instrument includes a main body waist part which is a hollow body having a shape imitating the human body's waist part, and a pair of main body thigh parts provided in the main body waist part. The main body waist part has a crotch opening between the pair of main body thigh parts that exposes the inner surface of the underwear that is to be evaluated as an evaluation object to the absorbency evaluation instrument at least upwardly so that it can be seen or touched. including. The evaluation method includes a mounting procedure, a supply procedure, and an evaluation procedure. In the mounting procedure, underwear is mounted on the above-mentioned absorbency evaluation device. In the supply procedure, after the attachment procedure, a predetermined amount of simulated body fluid is supplied to the crotch opening while the underwear is attached to the above-mentioned absorbency evaluation instrument. In the evaluation procedure, after the supply procedure, the absorbent performance of the underwear is evaluated by at least visually observing or touching the inner surface of the underwear exposed upward through the crotch opening.

According to the above evaluation method, the same effects as the absorbency evaluation instrument according to one aspect of the present disclosure are achieved.

It is a front view of water-absorbing shorts. It is an explanatory view explaining a water absorption part in water absorption shorts. FIG. 2 is an explanatory diagram showing the absorbency evaluation instrument of the first embodiment. FIG. 2 is a plan view of the torso of the first embodiment. It is an explanatory view explaining an evaluation test using a torso of a 1st embodiment. It is an explanatory view showing a display part and water absorption shorts in a torso of a 1st embodiment. It is an explanatory view explaining an evaluation test using a torso of a 2nd embodiment. It is an explanatory view showing an attachment of a 2nd embodiment. FIG. 2 is an explanatory diagram illustrating the position of the vaginal opening on the underwear side and the position of the urethral opening on the underwear side. FIG. 7 is a plan view of a torso according to another embodiment in which an assumed urethral meatus position is displayed. FIG. 7 is a plan view of another embodiment of a torso in which an assumed vaginal orifice position and an assumed urethral orifice position are displayed.

Embodiments of the present disclosure will be described below with reference to the drawings.
Note that "matching" hereinafter is not limited to matching in a strict sense, and may not necessarily be matching exactly as long as the same effect is achieved. The same applies to "same", "perpendicular", and "parallel" mentioned below.

[1. First embodiment]
[1-1. Evaluation target]
The water-absorbing shorts 10, which are underwear to be evaluated, include a shorts main body portion 11 and a water-absorbing portion 17, as shown in FIG. 1, for example. The shorts main body part 11 is made of an outer fabric 21 and includes a front body part 12 and a back body part 13. The outer fabric 21 is, for example, a stretchable fabric that feels good on the skin. The front body part 12 is a part of the underwear that covers the wearer's abdomen, and the back body part 13 is a part that covers the wearer's buttocks. The shorts main body 11 has a waist opening 15 and a pair of leg openings 16. The waist opening 15 and the pair of leg openings 16 are formed by sewing the front body part 12 and the back body part 13 together at the side line part 14.

FIG. 2 shows a part of the water absorption part 17 cut away to explain the structure of the water absorption part 17. As shown in FIG. 2, the water absorption section 17 includes an outer fabric 21, a water absorption function section 25, and an inner fabric 24, and the water absorption function section 25 is held between the outer fabric 21 and the inner fabric 24. ing. The inner fabric 24 is a fabric that can come into contact with the wearer's skin and has water absorbency. The inner fabric 24 may also have quick drying properties.

The water absorbing function section 25 includes a moisture retaining fabric 23 and a waterproof fabric 22, which are laminated in this order. The moisture retaining fabric 23 is a fabric that has antibacterial and deodorizing properties and retains moisture absorbed by the inner fabric 24. The waterproof fabric 22 is a fabric that has waterproof properties.

The water-absorbing function part 25 is sandwiched between the outer fabric 21 and the inner fabric 24, and each end portion is sewn in the width direction (that is, the left-right direction). In the front-rear direction, the water-absorbing function section 25 has an end on the front side (that is, on the side of the front body part 12) sewn to the inner fabric 24 and the outer fabric 21, and an end on the rear side (that is, on the side of the back body part 13). are sewn to the inner fabric 24 and the outer fabric 21.

Among the seams to which the water absorption function part 25 is sewn, the seams in the left-right direction, that is, the seams in the leg openings 16 are referred to as leg opening side seams 173. The left leg opening side seam 173 is referred to as a left leg opening side seam 173a, and the right leg opening side seam 173 is referred to as a right leg opening side seam 173b. Among the seams to which the water absorption function section 25 is sewn, the front seam is called a front seam 171, and the back seam is called a back seam 172. The leg opening side seam 173 refers to the seam from the front seam 171 to the back seam 172.

In the following, when descriptions common to each part are described, the reference numerals are omitted. For example, when describing a common explanation for the left leg opening side seam 173a and the right leg opening side seam 173b, it will simply be described as leg opening side seam 173.

Note that the shape and configuration of the water-absorbing shorts 10 to be evaluated are not limited to the shape and configuration shown in FIG. 1, and may be any shape and configuration. The structure of the water absorbing function section 25 is not limited to the structure shown in FIG. 2, but may be any structure as long as it has moisture retention and waterproof properties, and may be formed by laminating one or more fabrics or materials having arbitrary functionality. It can be configured as follows.

[1-2. Absorbency evaluation equipment]
The absorbency evaluation instrument 1 of this embodiment includes a torso 30, a display section 50, and a supply section 60, as shown in FIGS. 3 and 4.

The torso 30 has a shape that resembles the lower half of the torso of a human body. Specifically, the torso 30 includes a main body waist part 31 and a pair of main body thigh parts 32 provided on the main body waist part 31. In the following, the abdomen 33 side of the torso 30 is the front, the back 34 side (that is, the side connected to the buttocks) is the back, the waist 35 side is the top, and the main body thigh 32 side is the bottom. The direction is defined by assuming that the side of the portion 32a is the left, and the side of the right thigh portion 32b of the main body is the right. Note that, hereinafter, the up-down direction is also referred to as the vertical direction.

In the torso 30, the main body waist portion 31 is a hollow body having a shape imitating a woman's waist region in this embodiment. The waist region in this embodiment includes the so-called waist and buttocks. The pair of main body thigh parts 32 have a shape that imitates thighs (for example, a cylindrical shape with a bottom), and the internal space of the main body thigh parts 32 and the internal space of the main body waist part 31 are in communication with each other. There is. In this way, the torso 30 has an opening 311 on the waist 35 side and is hollow inside.

Note that in this embodiment, a so-called medium-sized torso 30 is used. The torso 30 may be an injection molded product using resin, for example. The material of the torso 30 is not limited to this, and may be any material such as resin, metal, wood, cloth, paper, etc., or a combination thereof.

As shown in FIG. 4, the main body waist part 31 includes an opening 40 having a crotch opening 41 between the pair of main body thigh parts 32. The opening 40 is a portion around the crotch opening 41. The region between the pair of main body thighs 32 corresponds to the so-called crotch region of the human body. The absorption characteristics of the water-absorbing shorts 10 are evaluated by the seepage at the crotch of the water-absorbing shorts 10, the backflow when the water-absorbing portion 17 is pressed with a finger, etc., as will be described later. For this reason, the crotch opening 41 opens the inner surface 18 of the water-absorbent shorts 10 that is attached to the torso 30, more specifically, the inner surface 18 of the crotch of the water-absorbent shorts 10, as shown in FIG. 6, which will be described later. It has a size that is at least exposed upward so that it can be seen or touched.

Note that the inner surface 18 is the surface that comes into contact with the wearer's skin. The crotch portion of the water-absorbing shorts 10 is a portion called a gusset portion or a crotch portion in shorts, and is a portion of the water-absorbing shorts 10 where the water-absorbing portion 17 is provided. Touching includes touching with a finger, pressing with a finger, and applying pressure similar to touching or pressing with a finger. Note that similar pressure may be applied by an instrument or device other than the finger.

The crotch opening 41 has a width WT in the left-right direction that is wider than the width W of the crotch of the water-absorbing shorts 10 (that is, the width of the water-absorbing portion 17 in the left-right direction). Thereby, in the crotch opening 41, the entire range in the left and right direction of the inner surface 18 of the crotch of the water-absorbing shorts 10 attached to the torso 30 is exposed. That is, in evaluating the absorption characteristics of the water-absorbing shorts 10, it becomes easy to check the left and right directions.

The crotch opening 41 has a range in the front-back direction that is predetermined based on a position P1 that is assumed to be the wearer's vaginal opening (hereinafter also referred to as assumed vaginal opening position). Specifically, as shown in FIG. 4, the crotch opening 41 has a predetermined first length d1 in the range extending forward from the assumed vaginal opening position P1, and The range extending in the rear direction with reference to 2 has a predetermined second length d2.

The first length d1 is a length that indicates a range that extends in the front direction with the assumed vaginal opening position P1 as a reference, out of the range that is assumed to absorb menstrual blood on the inner surface 18 of the water-absorbing shorts 10 attached to the torso 30. It is. The second length d2 is a length that indicates a range that extends rearward from the assumed vaginal opening position P1, among the range that is assumed to absorb menstrual blood on the inner surface 18 of the water-absorbing shorts 10 attached to the torso 30. It is. A range having a length d0, which is the sum of the first length d1 and the second length d2, based on the assumed vaginal opening position P1, is the area where menstrual blood flows on the inner surface 18 of the water-absorbing shorts 10 attached to the torso 30. This corresponds to the range that is expected to be absorbed.

The first length d1 and the second length d2 are set to represent the range where menstrual blood is expected to be absorbed based on the measurement results by the subject, and the first length d1 is about several centimeters to about ten centimeters. The second length d2 is about several centimeters shorter than the first length d1. If d1>d2, the torso 30 is vertically erected as shown in FIG. 3, and the person is standing or sitting (that is, the person is not lying down). The reproducibility of the absorption range of menstrual blood increases.

For example, in this embodiment, the first length d1 may be 9 cm, and the second length d2 may be 4 cm. Note that the first length d1 and the second length d2 are not limited to 9 cm and 4 cm, respectively, and may be any length based on the item to be evaluated. The first length d1 and the second length d2 may be the same length.

This clarifies the range in which the water-absorbing shorts 10 are expected to absorb menstrual blood. In other words, compared to the case where the opening 40 is simply provided with a relatively wide opening in the front-back direction without determining the front-back range based on the assumed vaginal opening position P1 like the crotch opening 41, The range in the front-rear direction in which the absorption characteristics of the water-absorbing shorts 10 should be evaluated is clarified.

The display unit 50 shows a position P1 in the crotch opening 41 that is assumed to be the wearer's vaginal opening (that is, the above-mentioned assumed vaginal opening position). In other words, the assumed vaginal opening position P1 is a position where the wearer's vaginal opening is assumed to be within the range exposed at the crotch opening 41 of the inner surface 18 of the water-absorbing shorts 10 attached to the torso 30. Note that the assumed vaginal opening position P1 can also be said to be a position where the vaginal opening in the torso 30 is assumed. In this embodiment, the display unit 50 specifies the position of the assumed vaginal opening position P1 in the front-rear direction and the left-right direction.

In this embodiment, the display section 50 is provided around the crotch opening 41 on the inner surface 310 of the torso 30 . The display unit 50 includes display units 50_1, 50_2, 50_3, and 50_4. The display units 50_1 and 50_2 form a pair with each other, and the display units 50_3 and 50_4 form a pair with each other. The display sections 50_1 and 50_2 are provided so as to face each other in the front-back direction across the crotch opening 41. The display sections 50_2 and 50_3 are provided so as to face each other in the left-right direction across the crotch opening 41. Each of the display sections 50_1 to 50_4 represents a linear mark.

A position where a first imaginary line 101 connecting the display sections 50_1 and 50_2 provided in the front-rear direction and a second imaginary line 102 connecting the display sections 50_3 and 50_4 provided in the left-right direction overlap is projected vertically from above to below. This position is indicated as the assumed vaginal opening position P1.

In the example shown in FIG. 4, the display section 50_1 extends from the front end of the opening 40 to the abdomen 33 side, and the display section 50_2 extends from the rear end of the opening 40 to the back 34 side (i.e., the buttock side). Extends to. The display section 50_3 extends from the left end of the opening 40 toward the left main body thigh 32a, and the display section 50_4 extends from the right end of the opening 40 toward the right main body thigh 32b.

However, the display section 50 is not limited to this, and may be provided with a plurality of sets of linear marks at positions facing each other across the crotch opening 41, such as on the diagonal of the crotch opening 41, for example. good. Each set of linear marks may be arranged such that the position where a plurality of virtual lines connecting these marks overlap is projected vertically from above to below indicates the assumed vaginal opening position P1.

Note that the above-mentioned linear marks represented by each of the display sections 50 may be configured by, for example, providing a linear groove or a convex portion on the inner surface 310. However, the display section 50 may be configured by a display using ink or the like, or may be configured by pasting a member other than the members constituting the torso 30, such as a tape. When the torso 30 is an injection molded product, the display section 50 may or may not be formed in advance by injection molding. In the latter case, the display section 50 may be constructed of ink, tape, grooves, etc., as described above.

The assumed vaginal opening position P1 is determined based on measurement results obtained by a plurality of subjects. In other words, marks are placed on the water-absorbing shorts worn by the test subject at positions facing the vaginal opening, and based on the positions of these marks, the position of the wearer's vaginal opening in the water-absorbing shorts is assumed (hereinafter referred to as underwear-side vaginal opening position Q1). ) is determined. As the water-absorbing shorts, water-absorbing shorts that are a predetermined standard are used. In this embodiment, for example, so-called M size water absorbent shorts are used. A position that corresponds to (that is, coincides with) the underwear-side vaginal opening position Q1 in the reference water-absorbing shorts worn on the torso 30 is determined as the assumed vaginal opening position P1. The above-mentioned display section 50 is provided to indicate the assumed vaginal opening position P1 determined in this way.

The supply unit 60 supplies a pseudo body fluid for evaluating absorption characteristics to the assumed vaginal opening position P1 indicated by the display unit 50. The supply section 60 includes at least a tube section 61 and a discharge section 62 provided at one end of the tube section 61 and having one discharge port 620. In this embodiment, the pipe portion 61 and the discharge portion 62 are integrated. As the material of the tube portion 61, resin, glass, paper, etc. may be used. Preferably, a hard material is used.

Although not shown, a simulated body fluid supply device that supplies a predetermined amount of simulated body fluid at predetermined intervals may be connected to the other end 63 of the tube portion 61. Alternatively, a syringe-like instrument may be connected to the other end 63.

In the example shown in FIG. 3, the tube portion 61 has a linear shape. The tube portion 61 is held substantially perpendicular to the plane including the crotch opening 41 by a not-shown attachment (for example, an attachment such as a clamp). In other words, the surface including the crotch opening 41 is the inner surface 18 of the water absorbent shorts 10 attached to the torso 30 and is a surface parallel to the inner surface 18 exposed at the crotch opening 41.

The tube part 61 is fixed by the above-mentioned fitting etc., for example, by adjusting the distance between the discharge part 62 and the inner surface 18 of the water-absorbing shorts 10 that is attached to the torso 30 and exposed at the crotch opening 41. is maintained so that it is several mm to several cm. Further, the tube portion 61 is held by the above-mentioned attachment or the like so that the position of the discharge portion 62 having the discharge port 620 corresponds to the assumed vaginal opening position P1 indicated by the display portion 50. Corresponding means that the projected vaginal orifice position P1 shown by the display section 50 is projected upward or downward in a substantially perpendicular direction to the plane including the crotch opening 41 on which the display section 50 is provided, and the position of the discharge section 62. This means that the positions are approximately the same.

Thereby, on the inner surface 18 of the water-absorbing shorts 10 worn on the torso 30 and exposed at the crotch opening 41, pseudo body fluid is supplied in a pinpoint manner to the assumed vaginal opening position P1.

Note that the holding state and shape of the tube portion 61 are not limited to those shown in FIG. 3 and above. The tube portion 61 may be held at a predetermined angle with respect to a plane including the crotch opening 41. Further, the tube portion 61 may have any length, any inner diameter, and any outer diameter, and may have a bent shape instead of a straight shape.

[1-3. Evaluation procedure]
The procedure for evaluating the absorption characteristics of the water-absorbing shorts 10 will be explained using FIGS. 5 and 6. The procedure for evaluating absorption characteristics using the torso 30 includes the following procedure.

(1) The water-absorbing shorts 10 to be evaluated are attached to the torso 30. The assumed vaginal orifice position P1 shown by the display unit 50 can also be said to be a position where the vaginal orifice of the torso 30 imitating the human body is assumed. Even when using the water-absorbing shorts 10 of a different design and size than the reference water-absorbing shorts described above as an evaluation target, the underwear-side vaginal opening position Q1 of the evaluation target and the assumed vaginal opening position P1 shown on the display unit 50 are approximately the same. Match. Therefore, as will be described later, by dropping a pseudo body fluid (i.e., a pseudo body fluid simulating menstrual blood) at a position corresponding to the assumed vaginal opening position P1, menstrual blood is actually discharged from the human body into the water-absorbing shorts 10. The condition is reproduced with relatively high accuracy by the absorbency evaluation instrument 1.

(2) With the water-absorbent shorts 10 attached to the torso 30, a predetermined amount of simulated body fluid is supplied (i.e., dripped) to the inner surface 18 of the water-absorbent shorts 10 exposed upward at the crotch opening 41. . In this embodiment, the supply unit 60 is used to locate the assumed vaginal orifice position indicated by the display unit 50 on the inner surface 18 of the water-absorbing shorts 10 attached to the torso 30 that is exposed at the crotch opening 41. A pseudo body fluid simulating menstrual blood is dropped at a position corresponding to P1.

In this embodiment, 1 ml of simulated body fluid is supplied (hereinafter also referred to as dripping). Note that the supply amount (hereinafter also referred to as dripping amount) is not limited to 1 ml, and may be any amount.
After dropping the simulated body fluid, the device waits for a predetermined time (hereinafter also referred to as waiting time). In this embodiment, the waiting time is 1 minute. Note that the waiting time is not limited to one minute, and may be any time depending on the item to be evaluated, the amount of the pseudo body fluid dropped, and the like. Alternatively, the waiting time may be 0 (that is, the next procedure may be executed without waiting).

As a pseudo body fluid simulating menstrual blood, for example, water, pure water, artificial blood, aqueous sodium chloride solution, bovine blood, etc. can be used. The electrolyte concentration of the aqueous sodium chloride solution may be, for example, from 100 to several 100 mEq. Note that the pseudo body fluid simulating menstrual blood is not limited to the above-mentioned liquids, but may be any liquid substance simulating menstrual blood. The liquid substance may include a solid substance.

(3) After the standby time has elapsed, evaluate the absorption performance of the water-absorbing shorts 10. Evaluation of absorption performance includes at least evaluation by visual observation or finger touch. In this embodiment, the following evaluation is performed.
(a) Visually check the seepage of pseudo body fluid from the seams in the water absorption part 17 (i.e., front seam 171, rear seam 172, left leg opening side seam 173a, right leg opening side seam 173b). Please check.

(b) Visually check whether the pseudo body fluid has oozed out from the outer surface of the water-absorbing part 17 (that is, the outer fabric 21 of the water-absorbing part 17).
(c) Press the part of the inner surface 18 of the water absorption part 17 onto which the simulated body fluid has been dropped with a finger to check whether the simulated body fluid flows back (hereinafter also referred to as finger touch confirmation).

(4) Repeat steps (2)-(3). In the step (3), seepage from the seams of the water absorbing part 17 is confirmed, seepage from the outer surface of the water absorbing part 17 is confirmed, and backflow of pseudo body fluid when pressed on the inner surface 18 of the water absorbing part 17 If a predetermined evaluation specific condition is satisfied, such as when the inner surface 18 is confirmed to be wet, the total amount of the pseudo body fluid dripped up to the previous time is specified as the maximum absorption amount of the water-absorbing shorts 10. This completes the repetition of steps (2) to (3).

(5) After the maximum absorption amount is specified, and after a predetermined period of time has elapsed, check for seepage, leakage, etc. of pseudo body fluid from parts other than the seams of the water absorption part 17 and the outer surface of the water absorption part 17. In this embodiment, the predetermined time is 30 minutes. Then, the evaluation procedure ends. Note that the predetermined time is not limited to 30 minutes, and may be any time depending on the item to be evaluated, the amount of the pseudo body fluid dropped, and the like.

In this way, by performing the same evaluation procedure with the evaluation target attached to the common torso 30 and comparing the results with multiple types of water-absorbing shorts 10 as evaluation targets, each water-absorbing short 10 absorption properties are evaluated relatively.

Note that the state of seepage may be imaged with a camera or the like, and visual confirmation may be performed based on the captured image. The finger touch confirmation may be performed using a device or the like that can apply a pressing force similar to the pressing force when pressing with a finger. The pressing force when pressing with a finger can be, for example, several tens of g/cm ² . For example, in this embodiment, the above-mentioned pressing force may be 50 g/cm ² . Note that the above-mentioned pressing force is not limited to 50 g/cm ² and may be any value depending on the evaluation item and the evaluation target.

[1-4. effect]
According to the first embodiment described in detail above, the following effects are achieved.
(1a) The absorbency evaluation instrument 1 is used to evaluate the absorption performance of the water absorbent shorts 10 to be evaluated, and includes a torso 30 and a supply section 60. The torso 30 includes a main body waist part 31 and a pair of main body thigh parts 32 provided on the main body waist part 31. The main body waist part 31 includes an opening 40 having a crotch opening 41 between the pair of main body thigh parts 32. The crotch opening 41 is a crotch opening that exposes the inner surface 18 of the water-absorbent shorts 10, which is attached to the absorbency evaluation instrument 1 (i.e., the torso 30, more specifically, the main body waist 31), upward so that it can be seen or touched at least. It has a section opening 41.

Therefore, according to the present embodiment, there is no need to repeatedly put on and take off the water-absorbing shorts 10 to be evaluated. This suppresses the problem that the state of seepage or water retention differs from the state that should originally be evaluated due to contact with the water. In other words, evaluation can be performed in a state relatively close to the state in which the wearer wears the product. As a result, the absorbent performance of underwear can be evaluated more appropriately than in the case of using a conventional evaluation device that requires removing the water-absorbing shorts 10 worn during evaluation.

Furthermore, according to the present embodiment, there is no need to remove the water-absorbing shorts 10 worn when performing an evaluation, so a conventional evaluation instrument that requires removing the water-absorbing shorts 10 worn when performing an evaluation is used. The absorbent performance of underwear can be evaluated more easily than in other cases.

(1b) The crotch opening 41 is a range in the anteroposterior direction and is predetermined in the anteroposterior direction based on a reference position that is at least one of a position assumed to be the wearer's vaginal opening and a position assumed to be the urethral opening. It has a range of . In this embodiment, the reference position is a position assumed to be the vaginal opening. Therefore, in this embodiment, compared to a case where the reference position is not set to a position assuming the vaginal opening, at least menstrual blood is absorbed from the inner surface 18 of the water-absorbing shorts 10 attached to the torso 30 at the crotch opening 41. The expected range in the front-back direction can be exposed more reliably.

(1c) The display section 50 indicates a reference position that is at least one of a position within the crotch opening 41 that assumes the wearer's vaginal opening and a position that assumes the urethral opening. In this embodiment, the reference position is a position assumed to be the vaginal opening. Therefore, in this embodiment, the position within the crotch opening 41 that is assumed to be the wearer's vaginal opening can be made clear.

(1d) The supply section 60 has a pipe section 61 and a discharge section 62. The pipe portion 61 allows a simulated body fluid for evaluating absorption performance to flow therein. The discharge section 62 includes at least one discharge port 620 that communicates with the tube section 61 and discharges the simulated body fluid. In this embodiment, the discharge section 62 includes one discharge port 620. The supply unit 60 supplies the pseudo body fluid to a reference position within the crotch opening 41 that is at least one of a position assumed to be the wearer's vaginal opening and a position assumed to be the urethral opening. In this embodiment, the reference position is a position assumed to be the vaginal opening. Therefore, in this embodiment, the absorption characteristics of menstrual blood can be evaluated in a state relatively similar to the state in which the wearer wears the product.

In particular, in this embodiment, since the display section 50 is provided as described in (1c), the pseudo body fluid is accurately, that is, pinpointed, supplied to a position within the crotch opening 41 that is assumed to be the wearer's vaginal opening. be able to.

(1e) The evaluation method using the absorbency evaluation instrument 1 includes a mounting procedure, a supply procedure, and an evaluation procedure. In the mounting procedure, the absorbent shorts 10 are mounted on the absorbency evaluation instrument 1 (namely, the torso 30, specifically, the main body waist region 31) as the underwear to be evaluated. In the supply procedure, after the wearing procedure, a predetermined amount of pseudo body fluid is supplied into the crotch opening 41 with the water-absorbing shorts 10 attached to the torso 30. In the evaluation procedure, after the supply procedure, the absorbent performance of the water-absorbing shorts 10 is evaluated by at least visually observing or touching the inner surface 18 of the water-absorbing shorts 10 exposed upward at the crotch opening 41.

Thereby, by performing the same evaluation procedure using the torso 30 and comparing the results, it is possible to relatively evaluate the absorption characteristics of a plurality of types of water-absorbing shorts 10.

In the above embodiment, the absorbency evaluation instrument 1, the torso 30, the display section 50, and the supply section 60 correspond to the absorbency evaluation instrument, and the torso 30 corresponds to the main body waist region and the pair of main body thigh regions. The main body waist 31 corresponds to the main body waist, the pair of main body thighs 32 correspond to the pair of main body thighs, the water absorbent shorts 10 correspond to underwear, the inner surface 18 corresponds to an inner screen, and the crotch The opening 41 corresponds to the crotch opening. The assumed vaginal opening position P1 corresponds to the assumed position of the wearer's vaginal opening, a reference position, the display section 50 and the display sections 50_1 to 50_4 correspond to the display section, and the supply section 60 corresponds to the supply section.

[2. Second embodiment]
[2-1. composition]
Since the basic configuration of the second embodiment is the same as that of the first embodiment, the differences will be explained below. Note that the same reference numerals as those in the first embodiment indicate the same configurations, and refer to the preceding description.

The second embodiment differs from the first embodiment in that, as shown in FIG. 7, the supply section 60a included in the absorbency evaluation instrument 1a includes a plurality of branch pipes 75 to 77 for supplying simulated body fluids. differ.

In this embodiment, an attachment 70 is provided on the discharge section 62 side of the tube section 61 included in the supply section 60a. As shown in FIG. 8, the attachment 70 includes a cylinder main body 71, a cylinder opening 72, a cylinder bottom 73, and branch pipes 75 to 77. The cylinder main body portion 71 has a cylindrical shape. The cylinder opening 72 is one end of the cylinder main body 71 and has an opening 721. The opening 721 has an inner diameter that is slightly larger or slightly smaller than the outer diameter of the discharge port 620. Although not shown, the cylinder opening 72 has a shape that can be connected to the discharge part 62.

The cylinder bottom 73 is the other end of the cylinder main body 71 and has an opening 731 in the center, and further has openings 732 and 733 adjacent to the opening 731. Among the openings 731-733, opening 731 has the largest inner diameter. In other words, openings 732, 733 have a smaller inner diameter than opening 731. The openings 731 to 733 are arranged in a line on the cylinder bottom 73. In other words, the centers of each of the openings 731 to 733 are located on the same straight line.

The branch pipes 75 to 77 have a tubular shape. Branch pipe 75 communicates with opening 731, branch pipe 76 communicates with opening 732, and branch pipe 77 communicates with opening 733. In this embodiment, the branch pipe 75 has a shape extending substantially perpendicularly to the cylinder bottom 73. The branch pipes 76 and 77 each have a predetermined angle with the branch pipe 75 as the central axis.

As the material of the attachment 70, the same material as that of the tube portion 61 may be used. As with the tube portion 61, it is preferable that the attachment 70 is made of a hard material.
By connecting the opening 721 of the attachment 70 to the discharge portion 62 of the tube portion 61, the internal space of the tube portion 61 and the internal space of the attachment 70 communicate with each other. As a result, the pseudo body fluid supplied to the pipe section 61 is discharged from the branch pipes 75 to 77, respectively. Regarding the discharge amount, the discharge amount from the branch pipe 75 is larger than the discharge amount from the branch pipes 76 to 77. Furthermore, with the attachment 70 connected to the discharge portion 62, the branch pipes 75 to 77 are arranged in a line in the front-rear direction. As a result, the simulated body fluid is dropped in different directions and in different amounts.

[2-2. effect]
(2a) The discharge section 62 includes a plurality of openings 731 to 733 as discharge ports, and branch pipes 75 to 77 communicating with the openings 731 to 733, respectively. At least some of the plurality of branch pipes 75 to 77 extend in different directions. In this embodiment, all of the branch pipes 75 to 77 extend in different directions. Thereby, the pseudo body fluid supplied from the tube part 61 can be dispersed and dripped. For example, the simulated body fluid can be dropped in any manner with respect to the amount and direction of supply depending on the evaluation criteria.

(2b) The branch pipes 75 to 77 are arranged in a line in the front-rear direction. Thereby, for example, the state in which the pseudo body fluid simulating menstrual blood is discharged can be made to be closer to the state in which menstrual blood is discharged and flows in the front-rear direction. In other words, the absorption characteristics of the water-absorbing shorts 10 can be evaluated using the simulated body fluid in a discharge state that is closer to the actual state, and as a result, more appropriate evaluation results can be obtained.

In the above embodiment, the supply section 60a corresponds to a supply section, the attachment 70 corresponds to a discharge section, the openings 731 to 733 correspond to a plurality of discharge ports, and the branch pipes 75 to 77 correspond to branch pipes. .

[2-3. Modified example]
(1) In the embodiment described above, the attachment 70 has three branch pipes 75 to 76, but the attachment 70 is not limited to this. The number of branch pipes that the attachment 70 has may be plural, and may be any number other than three.

(2) In the embodiment described above, the cross-sectional area of the central branch pipe 75 (i.e., the inner diameter of the opening 731) is larger than the cross-sectional area of the other branch pipes 76, 77 (i.e., the inner diameter of the openings 732, 733); However, the size of the cross-sectional area of each branch pipe is not limited to this. The size of the cross-sectional area of each branch pipe may be arbitrary.

(3) In the embodiment described above, the plurality of branch pipes 75 to 77 are arranged in a line in the front-rear direction, but the arrangement of the plurality of branch pipes is not limited to this. For example, the plurality of branch pipes may be arranged in a zigzag manner with respect to a reference line extending in the front-rear direction with the attachment 70 connected to the discharge part 62, or may be arranged irregularly.

(4) In the above embodiment, the branch pipe 75 extends substantially perpendicularly to the cylinder bottom 73, and the branch pipes 76 and 77 are arranged at a predetermined angle with respect to the branch pipe 75. The angles that the branch pipes 75 to 77 form with each other are not limited to this. The branch pipe 75 does not extend substantially perpendicularly to the cylinder bottom 73, but may extend at a predetermined angle. Furthermore, the angles that the plurality of branch pipes form with each other may be arbitrary.

[3. Other embodiments]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be implemented with various modifications.

(3a) In the above-described embodiment, the absorbency evaluation instrument 1a includes the supply section 60, but the absorbency evaluation instrument is not limited to this. The absorbency evaluation instrument may include only the torso 30 and not the supply section 60. For example, an evaluator conducting an evaluation test may use a syringe or the like to drop a pseudo body fluid at the assumed vaginal opening position P1. In this case, the torso 30 corresponds to an absorbency evaluation instrument.

(3b) In the above embodiment, the absorbency evaluation instrument 1a includes the display section 50, but the absorbency evaluation instrument is not limited to this. Although not shown, the absorbency evaluation instrument (that is, specifically, the torso 30) does not need to include the display section 50. In this case, in the evaluation procedure (1), a procedure for specifying the underwear-side vaginal opening position Q1 in the water-absorbing shorts 10 to be evaluated (hereinafter also referred to as specifying procedure) may be performed.

For example, as shown in FIG. 9, the water-absorbent shorts 10 to be evaluated are folded in half along the center line C0 by aligning the front and rear waist openings 15, and from the crotch fold M to the front side (i.e., from the front side) A position away from the waist opening 15 side of the waist opening 15 of the waist portion 12 by a predetermined predicted distance da may be specified as the underwear side vaginal opening position Q1.

The predicted distance da may be determined based on the measurement result by the subject. The predicted distance da may be several centimeters. For example, in this embodiment, the predicted distance da may be 3 cm. Note that the predicted distance da is not limited to 3 cm, and may be any numerical value depending on the type of evaluation target.

In the evaluation procedure (2), with the water-absorbing shorts 10 attached to the torso 30, a predetermined position Q1 on the inner side surface 18 of the water-absorbing shorts 10 exposed upward at the crotch opening 41 is set at the specified underwear-side vaginal opening position Q1. Absorption performance may be evaluated by dropping a simulated body fluid in a given amount. Note that a position spaced forward from the underwear-side vaginal opening position Q1 by a difference distance d3, which will be described later, may be specified as the position of the wearer's urethral opening in the water-absorbing shorts 10.

(3c) In the embodiment described above, the display section 50 is configured as a plurality of sets of linear marks, but the display section 50 is not limited to this. The display unit 50 may be, for example, a device such as a laser pointer.

(3d) In the above-described embodiment, the absorbency evaluation device is a device for evaluating the absorption characteristics of menstrual blood in the water-absorbing shorts 10, but the absorbency evaluation device evaluates the urine absorption characteristics of the water-absorbing shorts 10. It may be something that does. That is, in the description of the above-mentioned embodiment, the vaginal opening may be read as the urethral opening, the assumed vaginal opening position P1 may be read as the position assuming the wearer's urethral opening (hereinafter referred to as the assumed urethral opening position) P2, and menstrual blood may be read as urine. . For example, a position corresponding to the urethral opening on the side of the reference water-absorbing shorts may be determined as the assumed position P2 of the urethral opening on the torso 30 based on the measurement result by the subject.

For example, as shown in FIG. 10, the range of the crotch opening 41 in the torso 30b in the front-rear direction may be determined based on the assumed position of the wearer's urethral opening (i.e., assumed urethral opening position P2). . The display unit 50 (for example, display units 50_1, 50_2, 50_5, and 50_6) may indicate the assumed urethral meatus position P2 within the crotch opening 41. In other words, a position where the second virtual line 102 and the third virtual line 103 connecting the display sections 50_5 and 50_6 overlap may be projected vertically from above to below as the assumed urethral meatus position P2. Although not shown, the supply unit 60 may supply a pseudo body fluid simulating urine to the assumed urethral meatus position P2 in a pinpoint manner.

Note that, based on the measurement results obtained by the subject, a position at a differential distance d3 in front of the assumed vaginal orifice position P1 may be set as the assumed urethral orifice position P2. The differential distance d3 may be several mm to several cm. For example, in this embodiment, the differential distance d3 may be 1 cm. Note that the differential distance d3 is not limited to 1 cm, and may be any length depending on the type of evaluation target.

Further, the supply unit 60 may set the amount of the pseudo body fluid simulating urine to be dropped, such as several ml, which is larger than the amount of the pseudo body fluid simulating menstrual blood. For example, water, pure water, artificial urine, etc. can be used as a pseudo body fluid simulating urine. In this embodiment, the assumed urethral opening position P2 corresponds to a reference position, a position where the wearer's urethral opening is assumed.

(3e) The absorbency evaluation device may be one that evaluates the absorption characteristics of menstrual blood and urine in the water-absorbing shorts 10.
For example, as shown in FIG. 11, the crotch opening 41 in the torso 30c has a predetermined range in the front and back based on the assumed vaginal orifice position P1, and a predetermined range in the front and back direction based on the assumed urethral orifice position P2. The range may match. Of the display units 50, display units 50_1 to 50_4 indicate the assumed vaginal opening position P1 within the crotch opening 41, and display units 50_1, 50_2, 50_5, and 50_6 indicate the assumed urethral opening position P2 within the crotch opening 41. Good too.

Although not shown, the supply unit 60 pinpoints a pseudo body fluid simulating menstrual blood to the assumed vaginal orifice position P1, and pinpoints a pseudo body fluid simulating urine to the assumed urethral opening position P2. It may be. In this embodiment, the assumed vaginal opening position P1 and the assumed urethral opening position P2 correspond to the reference position, the assumed vaginal opening position P1 corresponds to the position where the wearer's vaginal opening is assumed, and the assumed urethral opening position P2 corresponds to the assumed position of the wearer's vaginal opening. This corresponds to the assumed position of the urethral opening.

(3f) In the above-described embodiment, the main body waist portion 31 was a hollow body having a shape imitating the waist including the waist and buttocks, but the main body waist portion 31 is not limited to this. The main body waist portion 31 may be a hollow body having a shape that resembles only the buttocks. In the above-described embodiment, the shape of the pair of main body thigh parts 32 is a shape imitating the thighs and is cylindrical with a bottom, but the shape of the pair of main body thigh parts 32 is limited to this. isn't it. The shape of the pair of main body thigh parts 32 may be a shape imitating thighs, and may be a bottomless cylindrical shape.

Alternatively, the shape of the pair of main body thighs 32 may be a shape imitating thighs, and may be a hollow or solid cylindrical shape having bottoms at the top and bottom. Note that the internal space of the main body waist portion 31 and the internal spaces of the pair of main body thigh portions 32 do not need to be communicated with each other. The shape of the pair of main body thighs 32 may not be a shape imitating thighs, but may simply be a columnar shape, a cylindrical shape, a rod shape, or the like. The material of the pair of main body thigh parts 32 may be different from that of the main body waist part 31.

(3g) In the above embodiment, the size of the torso 30 is the so-called M size, but the size of the torso 30 is not limited to this, and may be any size. It is preferable that the torso size and the reference water-absorbing shorts size have the same name (for example, M size), but they may be different.

(3h) In the above-described embodiment, the underwear to be evaluated that is worn on the torso 30 is the water-absorbing shorts 10, but the underwear to be evaluated is not limited to this. The underwear to be evaluated may be, for example, shorts obtained by removing the water-absorbing function portion 25 from the water-absorbing shorts 10. Further, the underwear to be evaluated may be a diaper.

(3i) In the above embodiment, the absorbency evaluation device evaluates the absorption performance of women's underwear, but the absorbency evaluation device evaluates the absorption performance of men's underwear (e.g., pants, water-absorbent pants, diapers). etc.) may be used to evaluate the absorption performance. For example, the main body waist of the torso may have a shape that imitates a man's waist, and the reference position is at least one of a position that assumes the wearer's vaginal opening and a position that assumes the urethral opening. , or the position assuming the urethral opening. That is, the range of the crotch opening in the front-rear direction may be predetermined based on the assumed position of the wearer's urethral opening. The display section may indicate a position assuming the wearer's urethral opening, and the supply section may supply a pseudo body fluid simulating urine to a position assuming the wearer's urethral opening.

(3j) A plurality of functions of one component in the above embodiment may be realized by a plurality of components, and a function of one component may be realized by a plurality of components. . Further, a plurality of functions possessed by a plurality of constituent elements may be realized by one constituent element, or one function realized by a plurality of constituent elements may be realized by one constituent element. Further, a part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of other embodiments.

[4. Technical idea disclosed in this specification]
[Item 1]
An absorbency evaluation instrument used to evaluate the absorption performance of underwear,
A main body waist part which is a hollow body having a shape imitating the waist part of a human body;
a pair of body thighs provided at the body waist;
Equipped with
The main body waist part has a crotch opening between the pair of main body thigh parts that exposes the inner surface of the underwear to be evaluated, which is attached to the absorbency evaluation instrument, upward so as to be at least visible or tactile. An apparatus for evaluating absorbency, including an opening having a diameter.
[Item 2]
The absorbency evaluation instrument described in item 1,
The crotch opening is a range in the front-back direction that is predetermined based on a reference position that is at least one of a position assuming the wearer's vaginal opening and a position assuming the urethral opening. An absorbency evaluation instrument having:
[Item 3]
The absorbency evaluation instrument according to item 1 or item 2,
An absorbency evaluation instrument, further comprising: a display section configured to indicate a reference position that is at least one of a position assumed to be the wearer's vaginal opening and a position assumed to be the urethral opening within the crotch opening.
[Item 4]
The absorbency evaluation instrument according to any one of items 1 to 3,
The crotch portion has a pipe portion through which a simulated body fluid for evaluating the absorption performance flows, and a discharge portion communicating with the pipe portion and including at least one discharge port for discharging the simulated body fluid. An absorbency evaluation device further comprising: a supply section configured to supply the pseudo body fluid to a reference position that is at least one of a position assumed to be the wearer's vaginal opening and a position assumed to be the urethral opening within the opening. .
[Item 5]
The absorbency evaluation instrument described in item 4,
The discharge part is
a plurality of the discharge ports;
a branch pipe communicating with each of the plurality of discharge ports;
Equipped with
An absorbency evaluation instrument, wherein at least some of the branch pipes extend in different directions.
[Item 6]
The absorbency evaluation instrument according to any one of items 2 to 5,
The reference position is a position assuming the wearer's vaginal opening within the crotch opening.
[Item 7]
The absorbency evaluation instrument according to any one of items 2 to 6,
The reference position is a position assuming the wearer's urethral opening within the crotch opening.
[Item 8]
An absorbency evaluation instrument used to evaluate the absorption performance of underwear, which comprises a main body waist part which is a hollow body having a shape imitating the human body waist part, and a pair of main body thigh parts provided on the main body waist part. and an opening in which the main body waist part has a crotch opening between the pair of main body thigh parts that exposes an inner surface of the underwear worn as an evaluation object upward so that it can be seen or touched at least. An evaluation method using the absorbency evaluation instrument, comprising:
a mounting procedure for mounting the underwear on the absorbency evaluation device;
After the wearing procedure, a supplying procedure of supplying a predetermined amount of simulated body fluid to the crotch opening while the underwear is attached to the absorbency evaluation device;
After the supplying step, an evaluation step of evaluating the absorbent performance of the underwear by at least visually or touching the inner surface of the underwear exposed upward at the crotch opening;
Evaluation methods including.

DESCRIPTION OF SYMBOLS 1... Absorbency evaluation instrument, 30... Torso, 10... Water absorption shorts, 31... Main body waist, 32... Main body thigh, 40... Opening, 41... Crotch opening, 18... Inner surface.

Claims (9)

An absorbency evaluation instrument used to evaluate the absorption performance of underwear,
A main body waist part which is a hollow body having a shape imitating the waist part of a human body;
a pair of body thighs provided at the body waist;
Equipped with
The main body waist part has a crotch opening between the pair of main body thigh parts that exposes the inner surface of the underwear to be evaluated in the absorbency evaluation instrument upward so that it can be seen or touched at least. An apparatus for evaluating absorbency, including an opening with a The absorbency evaluation instrument according to claim 1,
The crotch opening is a range in the front-back direction that is predetermined based on a reference position that is at least one of a position assuming the wearer's vaginal opening and a position assuming the urethral opening. An absorbency evaluation instrument having: The absorbency evaluation instrument according to claim 1,
An absorbency evaluation device, further comprising: a display section configured to indicate a reference position that is at least one of a position assumed to be the wearer's vaginal opening and a position assumed to be the urethral opening within the crotch opening. . The absorbency evaluation instrument according to claim 1,
The crotch portion has a pipe portion through which a simulated body fluid for evaluating the absorption performance flows, and a discharge portion communicating with the pipe portion and including at least one discharge port for discharging the simulated body fluid. for evaluating absorbency, further comprising a supply section configured to supply the pseudo body fluid to a reference position that is at least one of a position assumed to be the vaginal opening of the wearer and a position assumed to be the urethral opening within the opening. utensils. The absorbency evaluation instrument according to claim 4 ,
The discharge part is
a plurality of the discharge ports;
a branch pipe communicating with each of the plurality of discharge ports;
Equipped with
An absorbency evaluation instrument, wherein at least some of the branch pipes extend in different directions. The absorbency evaluation instrument according to any one of claims 2 to 5 ,
The reference position is a position within the crotch opening that is assumed to be the vaginal opening of the wearer. The absorbency evaluation instrument according to any one of claims 2 to 5 ,
There are a first reference position and a second reference position as the reference position, the first reference position is a position within the crotch opening assuming the vaginal opening of the wearer, and The reference position of No. 2 is a position within the crotch opening assuming the wearer's urethral opening. The absorbency evaluation instrument according to any one of claims 2 to 5 ,
The reference position is a position within the crotch opening that is assumed to be the wearer's urethral opening. An absorbency evaluation instrument used to evaluate the absorbency performance of underwear, which comprises a main body waist part which is a hollow body having a shape imitating the human body waist part, and a pair of main body thigh parts provided on the main body waist part. and, the main body waist part is exposed upward between the pair of main body thigh parts so that the inner surface of the underwear to be attached to the absorbency evaluation instrument as an evaluation target can be at least visually or touched. An evaluation method using the absorbency evaluation instrument, which includes an opening having a crotch opening,
a mounting procedure for mounting the underwear on the absorbency evaluation device;
After the wearing procedure, a supplying procedure of supplying a predetermined amount of simulated body fluid to the inside of the crotch opening while the underwear is attached to the absorbency evaluation device;
After the supply step, an evaluation step of evaluating the absorbent performance of the underwear by at least visually or touching the inner surface of the underwear exposed upward at the crotch opening;
Evaluation methods including.

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