JP2017200576A - Absorbent pad for shampoo, and absorbent pad set for shampoo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent pad for shampoo which has moisture absorption performance capable of sufficiently adapting to shampoo use and which enables hair of a bedridden person to be easily shampooed without contaminating its surroundings.SOLUTION: An absorbent pad 1 for shampoo which is arranged below a head 101 of a bedridden person 100 when his/her hair is shampooed and which can be used to absorb hot and cold water used for shampoo includes an absorber body 5 that comprises a liquid-permeable front-side sheet 2, a liquid-poorly-permeating back-side sheet 3, and an absorber 4 arranged between both the sheets 2 and 3. Both the sheets 2 and 3 have extension parts that are extended outward from a peripheral edge 4E of the absorber 4, respectively. The extension parts are joined to each other so that a flap part 5F is formed. In the flap part 5F, the extension parts of both the sheets 2 and 3 are joined to each other via a strong joint 7 with a peel strength of 8 N/5 cm or more.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a hair-washing aid that can be used to absorb hot water used for washing when a caregiver or the like carries out the washing of a bed-rider while in the bed-washed state.

  In hospitals and care facilities, shampooing is regularly performed for patients and caregivers who cannot move their bodies in bed or futons while staying in bed. Washing of the bedridden person is considered to be one of important patient care because it can be expected not only to hygiene that the hair is kept clean but also to relax the mind and body of the bedridden person. Conventionally, a water-absorbing disposable diaper is sometimes used for washing the hair of a bedridden person in order to prevent the bed from getting wet or soiled by washing the hair. That is, a disposable diaper cut into an appropriate shape and size is laid under the head of the bedridden and washed, but a diaper that is originally used to absorb excrement such as urine is used. Applying to the head can be a major stress factor for the bedridden, and diapers used as rugs are not designed for shampooing purposes, so it is difficult to say that they are easy to use in shampooing. There is room for improvement.

  Conventionally, a hair washing tool called Kelly Pad (registered trademark) or a self-made hair washing tool having a configuration similar to that of the Kelly pad has been used as a dedicated hair washing tool for the bedridden. The kelly pad includes a pad on which the head of the bedridden is placed, and a drainage channel connected to the pad. In use, the pad is arranged below the head of the bedbill, and one end of the drainage channel is connected to the paddle. It is placed in a lower position than the bedridden person, for example, in a bucket placed under the bed where the bedbed person is sleeping, and in this state, hair washing is performed while flowing hot water from above the bedbed person toward the hair. According to such a hair washing method, the hot water used for washing the hair passes through the drainage channel and accumulates in the bucket under the bed, so that the hair can be washed without getting the bed and the futon wet. However, such a hair washing method has room for improvement, such as troublesome preparation and clean-up and worries about water leakage.

  For example, in Patent Document 1, a pad body on which a bedded person's head is placed is constructed from a polymer absorbent body, and hot water used during hair washing is absorbed by the pad body itself. By making it possible, a disposable water absorbing pad for shampooing that does not require a drainage channel that is essential in Kelly pads is described. Patent Document 1 also describes that a water leakage preventing wall is provided on the periphery of the pad main body.

  Patent Document 2 discloses a shampoo sheet that is formed of a paper diaper material having a band shape in a plan view and an arc shape, and is divided into three sections of a shampoo part, a rinsing part, and a moisture absorbing part at the back of the head in the bending direction. Have been described. This shampoo sheet is moved sequentially so that the sections corresponding to each step in the shampoo sheet are located below the head of the bedridden in each step of the shampooing process, rinsing process and moisture wiping process in hair washing. The shampoo sheet is rolled up and can be discarded after use.

JP 2006-580 A Utility Model Registration No. 3131303

  As described in Patent Documents 1 and 2, a conventional absorbent pad for washing hair comprising an absorbent body containing a water-absorbing polymer and a bag-like packaging material containing the absorbent body is the basis of a pad for absorbing excrement such as disposable diapers. Since the configuration is provided as it is, inconvenience is likely to occur in a hair washing application using a relatively large amount of hot water of several liters. In particular, a large amount of hot water is used in rinsing after shampooing, and when the absorbent body absorbs the hot water after use, the swelling portion of the wrapping material peels off due to the swelling of the absorbent body. There was a problem that the absorbent material leaked out of the packaging material and contaminated the bed and floor. In addition, in order to cope with such problems due to the swelling of the absorbent body, when the absorption capacity of the absorbent body is intentionally reduced to reduce the swelling degree due to the absorption of the absorbent body, Therefore, there is a possibility that inconveniences such as insufficient rinsing after shampooing and overflowing of hot water that could not be absorbed by the absorbent body may occur.

  Accordingly, the present invention provides an absorbent pad for washing hair and an absorbent pad set for washing hair that have moisture absorption performance that can sufficiently cope with the use of hair washing, and that can easily perform washing of a bedridden person without polluting the surroundings. About that.

  The present invention is an absorbent pad for shampooing that is disposed below the head of the bedridden when washing the bedridden and that can be used to absorb hot water used for washing the hair. A liquid permeable top sheet disposed at a position close to the head, a liquid permeable back sheet disposed at a position relatively far from the head, and an absorber disposed between the two sheets. Comprising an absorbent main body, the absorbent main body has a vertical direction corresponding to the height direction of the bedridden person, and a horizontal direction corresponding to a direction orthogonal to the height direction, the top sheet and the back sheet, Each of the shampoos has an extending part extending outward from the peripheral edge of the absorbent body, and the extending parts of both sheets are joined to each other via a strong joining part having a peel strength of 8 N / 5 cm or more. An absorbent pad is provided.

  The present invention also provides a hair-washing absorbent pad set comprising a main pad comprising the above-described hair-washing absorbent pad and an auxiliary pad that can be used over the main pad, wherein the auxiliary pad is a liquid-permeable first pad. The present invention provides an absorbent pad set for shampooing comprising one sheet, a liquid-permeable or liquid-permeable second sheet, and an auxiliary absorbent disposed between the two sheets.

  ADVANTAGE OF THE INVENTION According to this invention, the absorption pad for hair washing and the absorption pad set for hair washing which have the water | moisture-content absorption capability which can fully respond to a hair-washing use, and can perform a bedridden's hair simply without polluting the circumference | surroundings are provided. Is done.

FIG. 1 is a plan view schematically showing an upper surface side, that is, a surface sheet side, of one embodiment of an absorbent pad for hair washing according to the present invention, and is a plan view in an unfolded state in which elastic members of respective portions are extended and expanded in a planar shape. It is. FIG. 2 is a cross-sectional view schematically showing a cross section taken along line II of FIG. FIG. 3 is a top view schematically showing a state in which a bent portion (leak-proof cuff) of the hair washing absorbent pad shown in FIG. 1 is developed. FIG. 4 is an explanatory diagram of a usage state of the hair-washing absorbent pad shown in FIG. 1. FIG. 5 is a plan view schematically showing an upper surface of an embodiment of the absorbent pad set for hair washing according to the present invention. The elastic member of each part in the expanded form of the auxiliary pad of the absorbent pad set is extended to be planar. It is a top view in the unfolded state expanded. 6 is a cross-sectional view schematically showing a cross section taken along line II-II in FIG. FIG. 7 is a view corresponding to FIG. 6 in the auxiliary pad storage configuration of the hair-absorbing absorbent pad set shown in FIG. FIG. 8: is the (a) front view and (b) right view which concern on the more preferable specific form of the absorption pad for hair washing of this invention. 9 is a (a) plan view and (b) bottom view of the hair-washing absorbent pad shown in FIG. FIG. 10 is a perspective view of the hair-washing absorbent pad shown in FIG. 11A is a cross-sectional view taken along the line AA in FIG. 8A, and FIG. 11B is an enlarged cross-sectional view taken along the line AA in FIG. 8A. 12A is a front view, FIG. 12B is a right side view, and FIG. 12C is a plan view of the hair washing absorbent pad shown in FIG. 13A is a bottom view and FIG. 13B is a perspective view of the hair-washing absorbent pad shown in FIG. 12.

  Hereinafter, the absorbent pad for hair washing of this invention is demonstrated with reference to drawings based on the preferable embodiment. 1 to 4 show an absorbent pad 1 that is an embodiment of the absorbent pad for washing hair of the present invention. As shown in FIG. 4, the absorbent pad 1 according to the present embodiment is disposed below the head 101 of the bedridden person (the person to be washed) denoted by reference numeral 101 and used for washing the hair when washing the bedridden denoted by reference numeral 100. It is a hair-washing aid that can be used to absorb hot and cold water, and is a kind of absorbent article. In the present invention, the “bedbed person” means a person who is resting on a bed such as a bed or a futon placed on the floor. In this “resting state”, the whole body is laid on the bed. And the state where only the upper body is raised on the bed.

  As shown in FIG. 1 and FIG. 2, the absorbent pad 1 of the present embodiment includes a liquid-permeable surface sheet 2 disposed at a position relatively close to the head of a bedridden person who is a subject of hair washing during use, An absorptive main body 5 including a liquid-impermeable rear sheet 3 disposed at a position relatively far from the head and an absorbent body 4 disposed between both sheets 2 and 3 is provided. The absorptive main body 5 has a vertical direction X corresponding to the height direction of the bedridden person who is the subject of hair washing, and a horizontal direction Y corresponding to the left-right direction orthogonal to the height direction.

  In this embodiment, the absorbent main body 5 has a rectangular shape that is long in the lateral direction Y in a plan view as shown in FIG. 1, and the longitudinal direction of the absorbent main body 5 is in the lateral direction Y, that is, in the left-right direction of the bedridden person who is the subject of hair washing. The transverse direction of the absorbent main body 5 coincides with the longitudinal direction X. Although the absorbent body 4 has a smaller area than the absorbent main body 5, it has a rectangular shape that is long in the lateral direction Y in plan view, and the longitudinal direction of the absorbent body 4 coincides with the longitudinal direction of the absorbent main body 5. The top sheet 2 forms the upper surface of the absorbent main body 5, that is, the surface directed to the head side of the subject of hair washing when used, and the back sheet 3 is the lower surface of the absorbent main body 5, ie, the head side of the subject of hair washing when used. Forming a surface opposite to the surface directed to.

  FIG. 3 shows a state in which the bent portion (leak-proof cuff 6) of the absorbent pad 1 is developed. As shown in FIG. 3, the top sheet 2 and the back sheet 3 have the same shape (rectangular shape) of the same size in plan view, each having a larger area than the absorbent body 4, and the periphery of the absorbent body 4. It has an extending part that extends outward from 4E. More specifically, the topsheet 2 covers the entire upper surface of the absorbent body 4 (the face directed toward the head of the person to be washed in use), and further outwards from the entire periphery 4E of the absorbent body 4. The extended and back sheet 3 covers the entire area of the lower surface of the absorbent body 4 (the face opposite to the face directed to the head of the person to be washed during use), and the entire peripheral edge 4E of the absorbent body 4 The extending portions from the peripheral edges 4E of both sheets 2 and 3 are joined and integrated with each other to form a flap portion 5F. Such a flap portion 5F that extends from the peripheral edge 4E of the absorbent body 4 is arranged along the peripheral edge 4E of the absorbent body 4 and surrounds the absorbent body 4. The top sheet 2 and the back sheet 3 may be bonded to the absorber 4 with an adhesive.

  In the absorbent pad 1 of the present embodiment, a pair of leak-proof cuffs 6 and 6 that stand up toward the head of the person to be shampooed at the time of use, that is, at both ends in the longitudinal direction X of the absorbent main body 5 are lateral. It is arranged to extend to Y. Each leak-proof cuff 6 is continuous over the entire length in the lateral direction Y of the absorbent pad 1. As shown in FIG. 2, each leak-proof cuff 6 is positioned closer to the longitudinal center 5 </ b> Cx of the absorbent main body 5 than the lower end side in the natural state or the use state of the absorbent pad 1 in the order closer to the absorbent main body 5. The base wall portion 60 disposed on the base wall portion 60 is connected to the upper end portion 60a of the base wall portion 60, and from the longitudinal center 5Cx of the absorbent main body 5 more than the upper end portion 60a of the base wall portion 60 in a natural state or a use state. An elastic stretchable part 61 having a free end 61a disposed at a far position and stretchable in the lateral direction Y is configured. The leak-proof cuff 6 having such a configuration has a Z-shape in a sectional view along the longitudinal direction X as shown in FIG. 2 in a natural state of the absorbent pad 1, that is, a state where no external force is applied.

  As shown in FIG. 3, each leak-proof cuff 6 (base wall portion 60 and elastic expansion / contraction portion 61) has a strip-like portion 5 </ b> Fy extending in the lateral direction Y along the absorber 4 in the flap portion 5 </ b> F, that is, the topsheet 2 and the backside The laminated structure of the portion extending from the absorbent body 4 with the sheet 3 is positioned on the upper surface side by two folding lines 65 and 66 that are located outward in the longitudinal direction X of the absorbent body 4 and extend in the lateral direction Y. That is, it is formed by being bent toward the top sheet 2 side and includes a folding structure of the flap portion 5F. The band-shaped portion 5Fy of the flap portion 5F is bent toward the top sheet 2 at a first folding line 65 that is relatively close to the absorbent body 4, and further longitudinally along a second folding line 66 that is relatively far from the absorbent body 4. The portion folded between the first folding line 65 and the second folding line 66 in the belt-like portion 5Fy is the base wall portion 60 of the leak-proof cuff 6 and the second folding curve in the belt-like portion 5Fy. A portion located outward in the longitudinal direction X from 66 is an elastic stretchable portion 61 of the leak-proof cuff 6. It can be said that the leak-proof cuff 6 is a portion where the liquid-impervious rear surface sheet 3 is wound up on the surface sheet 2 side (the upper surface side of the absorbent main body 5).

  A thread-like elastic member 62 is fixed to the elastic expansion / contraction part 61 in an extended state in the lateral direction Y, and thereby, between both ends of the elastic expansion / contraction part 61 in the horizontal direction Y (elastic expansion / contraction part fixing parts 63 and 63 described later). Between) has a stretchability in the lateral direction Y. The number of the elastic members 62 arranged in the elastic expansion / contraction part 61 may be one, but as in the present embodiment, a plurality, preferably 3 to 14, more preferably 4 to 12 are in the longitudinal direction X (elastic expansion and contraction). If it is intermittently disposed in the width direction of the portion 61, the elastic stretchable portion 61 has a surface shape as shown in FIGS. 1 and 2, and this surface portion can be in good contact with the skin of the person to be washed. preferable.

  The fineness of the thread-like elastic member 62 is preferably 620 to 1240 dtex, and the expansion ratio of the thread-like elastic member 62 (ratio of the length after extension to the natural length) depends on the fineness and the number of elastic members 62. It is preferable that the ratio is 4 to 3.0 times, preferably 1.5 to 2.5 times, because it can touch the skin of the person to be washed with good touch. Further, instead of the thread-like elastic member 62 having a substantially circular cross section, a flat rubber having a flat cross section may be used.

  In each leak-proof cuff 6, a portion excluding both ends in the lateral direction Y, more specifically, a portion existing in the same position in the lateral direction Y with the absorbent body 4 in the natural state of the absorbent pad 1, Although not joined to other members, at both ends in the lateral direction Y, the layers constituting the folding structure of the flap portion 5F including the elastic stretchable portion 61 are joined together to form the elastic stretchable portion fixing portion 63. ing. That is, the elastic expansion / contraction portion fixing portions 63 are formed at the four corners of the absorption pad 1 having a rectangular shape in plan view. As described above, the elastic stretchable portion 61 having the stretchability in the longitudinal direction (lateral direction Y) is fixed to the other member (base wall portion 60) to form the elastic stretchable portion fixing portion 63. In the natural state of the absorbent pad 1, the non-fixed elastic expansion / contraction part 61 contracts in the lateral direction Y between the two fixing parts 63, 63, whereby the leak-proof cuff 6 stands upward and accordingly. The absorbent pad 1 is curved in a concave shape on the upper surface side, that is, the surface sheet 2 side.

  As one of the main features of the absorbent pad 1 of the present embodiment, the extension parts from the peripheral edge 4E of the absorbent body 4 of the top sheet 2 and the back sheet 3, that is, the two sheets 2 and 3 in the flap part 5F, The point which is mutually joined through the strong junction part of peeling strength 8N / 5cm or more, Preferably 9N / 5cm or more, More preferably, 10N / 5cm or more is mentioned. The “peeling strength” herein refers to the direction in which both sheets 2 and 3 in the flap portion 5F are moved from the side closer to the absorber 4 to the side farther from the absorber 4 (absorption of both sheets 2 and 3). It means the peeling strength when peeling in the extending direction from the peripheral edge 4E of the body 4. The width direction perpendicular to the longitudinal direction of the flap 5F. The strongly bonded portion in the absorbent pad 1 of the present embodiment is a straight continuous portion indicated by reference numeral 7 in FIG. 3 and is formed so as to surround the peripheral edge 4E of the absorber 4 in the longitudinal direction. A portion extending in X and a portion extending in the lateral direction Y are included.

  The peel strength of the strong joint portion 7 of the flap portion 5F may be uniform throughout the flap portion 5F or may be partially different on the assumption that it is 8 N / 5 cm or more. As an example of the latter, there is a form in which the peel strength of the strong joint portion 7 is different between the portion extending in the lateral direction Y (the strip-like portion 5Fy) and the portion extending in the longitudinal direction X in the flap portion 5F. The peel strength of the strong joint 7 of 5 Fy (that is, the peel strength in the longitudinal direction of the band-like portion 5 Fy) is 8 N / 5 cm or more, preferably 9 N / 5 cm or more, more preferably 10 N / 5 cm or more, and the longitudinal strength at the flap portion 5 F. The peel strength (that is, the peel strength in the width direction of the portion) of the strong joint 7 in the portion extending in the direction X (portion other than the belt-like portion 5Fy) is 10 N / 5 cm or more, preferably 11 N / 5 cm or more, more preferably 12 N / The form which is 5 cm or more is mentioned. The peel strength is measured by the following method.

<Measurement method of peel strength>
In the absorption pad, from the extended portion (flap portion) from the periphery of the absorbent body of the top sheet and the back sheet, a rectangular shape or a square shape in plan view having two sides extending in the extending direction is cut out as a measurement sample, The measurement sample is peeled in the extending direction using a Tensilon tensile tester, and the maximum value of the tensile strength at that time is measured.
More specifically, taking the absorbent pad 1 as an example, when measuring the peel strength of a portion extending in the longitudinal direction X (a portion other than the strip-like portion 5Fy) in the flap portion 5F, the portion is crossed in the lateral direction Y. Further, a straight line extending 20 mm from the periphery 4E of the absorber 4 to the inside of the absorber 4 is defined as one side (long side), and the length of the other side (short side) extending in the longitudinal direction X perpendicular to the one piece is 50 mm. A rectangular shape or a square shape in plan view is cut out and used as a measurement sample. Among the both ends (longitudinal ends) of the measurement sample in the lateral direction Y, in a portion extending 20 mm in the lateral direction Y from an end on the side where a part of the absorber 4 (peripheral portion of the absorber 4 extending from the peripheral edge 4E to 20 mm) exists. The two sheets, that is, the top sheet 2 and the back sheet 3 are peeled off from the absorbent body 4 on which they are overlapped by fingers, and the end portions of the two peeled sheets 2 and 3 are separated by a Tensilon tensile tester ( For example, it is set between chucks of Orientec Co., Ltd., trade name “RTA-100”). Then, at a peeling speed of 300 mm / min, the two sheets bonded to each other in the measurement sample are peeled off in the 180 ° direction, that is, the transverse direction Y in the absorbent pad 1 which is the extending direction, and the tensile strength at that time The maximum value (when the material breaks up, the tensile strength immediately before that) is measured, and the measured value is taken as the peel strength of the measurement target portion (the portion extending in the longitudinal direction X in the flap portion 5F). The measurement is performed 6 times (n = 6), and the average value is taken as the measured value. The measurement is performed in an environment with an air temperature of 20 ° C. and 65% RH.
Moreover, when measuring the peeling strength of the part (band-like part 5Fy) extended in the horizontal direction Y in the flap part 5F, the base wall part 60 (non-arrangement part of the elastic member 62) in the band-like part 5Fy is vertically cut in the vertical direction X. Further, a straight line extending 20 mm from the peripheral edge 4E of the absorber 4 to the inside of the absorber 4 is defined as one side (long side), and the length of the other side (short side) extending in the lateral direction Y perpendicular to the one piece is 50 mm. A rectangular shape or a square shape in plan view is cut out to obtain a measurement sample, and the vertical direction of the absorption pad 1 in the extending direction is measured with respect to the measurement sample in the same manner as the peeling strength of the portion other than the band-like portion 5Fy. The peel strength when peeled in the direction X is measured.

The above-mentioned peel strength of the flap portion 5F of 8N / 5 cm or more is compared with the peel strength of the flap portion equivalent portion in a normal excrement absorption pad such as a disposable diaper having the same basic configuration as the absorbent pad 1. This is a remarkably large numerical value (the peel strength of the portion corresponding to the flap portion 5F in a normal excrement absorbing pad is about 6 N / 5 cm). That is, in the absorbent pad 1, the sheets 2 and 3, which are the packaging materials that enclose the absorbent body 4, are joined to each other more strongly than the ordinary excrement absorbent pad. The peel strength is adjusted by adjusting the type of bonding agent that forms the joint between the sheets 2 and 3 and the type of bonding means such as heat seal, emboss seal, and ultrasonic seal. This can be implemented by appropriately adjusting the arrangement pattern of the parts. Specifically, in the case of an adhesive, in the excrement absorption pad, the basis weight of application was 0.5 to 3 g / m ² , and in the absorption pad of the present invention, 5, 10, The peel strength is increased by increasing to 15, 20 g / m ² , increasing the area ratio as an application means, or increasing the wire diameter of the adhesive. It is also possible to perform a treatment (for example, a surface treatment such as a corona treatment) for enhancing the adhesion of the material to be applied. From the viewpoint of reducing the cost without making the material hard, it is preferable to suppress the amount of the adhesive within a range satisfying the peel strength. When the influence of the fusion area on the peel strength such as heat seal and ultrasonic seal is large, the peel strength can be increased by increasing the area ratio. From the viewpoint of ensuring strength without hardening the material, a desired seal pattern can be adopted. By using these joining means in combination, the strength can be further increased.

A hot melt adhesive can be used as the adhesive that forms the strong joint 7 of the flap 5F. Particularly preferable hot melt adhesives from the viewpoint of the adhesiveness between the sheets 2 and 3 in the strong joint are styrene-butadiene-styrene (SBS), styrene-isobutylene-styrene (SIS), styrene-ethylene. -Styrene-elastomer hot melt adhesives such as butylene-styrene (SEBS); polyolefin hot melts, and the like. These can be used alone or in combination of two or more.
Further, the amount of the adhesive applied to the strong joint 7 is sufficient to ensure a sufficient adhesive force and prevent the applied hot-melt adhesive from seeping out, that is, the applied hot-melt adhesive comes out to the surface sheet 2 side. From the viewpoint of achieving both prevention and prevention, it is preferably 5 to 50 g / m ² , more preferably 10 to 45 g / m ² .
The arrangement pattern of the strong joints 7 is not particularly limited, and for example, application patterns such as spiral spray, slot spray, slot coater, and beads, and application patterns combining them can be used.

  As described above, the two sheets 2 and 3 that play a role as a packaging material that encloses the absorbent body 4 have a strong peel strength of 8 N / 5 cm or more at the outer position of the absorbent body 4. By joining, even if the absorbent body 4 absorbs a large amount of hot water used in washing the hair and swells greatly, the joint portion of both sheets 2 and 3 is not easily broken by the swelling of the absorbent body 4. For example, if the peel strength is 8 N / 5 cm or more and the length or width in the longitudinal direction X of the absorber 4 is 30 cm, the peel force required to peel the joint between the sheets 2 and 3 over the width of 30 cm is calculated. The peel strength becomes 6 times, and becomes 48 N / 30 cm or more. In other words, even when absorbing 2000 g of deionized water, the peel strength is 2.4 times the width of the absorber 4 (the absorbent pad 1 having the absorber 4 absorbing 2000 g of deionized water is When both ends of Y, that is, one end of both ends extending in the vertical direction X are fixed and suspended, at the other end of the absorbent pad 1 located on the opposite side of the one side Assuming that a 2000 g load is uniformly applied to the portion corresponding to the absorbent body 4, if the length in the longitudinal direction X of the absorbent body 4, that is, the width is 30 cm, a load of 2000 g is applied to the absorbent pad 1 having a length of 30 cm. The other end of the sheet is supported from below. At this time, a load of 19.6 N / 30 cm is applied to the other end. Peel strength of 8N per 5cm Therefore, in order to peel off the other end portion of 30 cm in length, a peeling force of 48 times N / 30 cm is required, which is 48 / 19.6 = 2.4 times the width of the absorber 4. This corresponds to the peel strength of. Therefore, such a configuration effectively prevents the sheets 2 and 3 from being torn during use or after use of the absorbent pad 1, and the absorbent material such as the water-absorbing polymer leaks out from the absorbent main body 5 and the surrounding bed. Occurrence of inconveniences such as soiling the floor or the floor is prevented. In addition, since it is not necessary to consider the tearing of the sheets 2 and 3 due to the swelling of the absorbent body 4 accompanying the manifestation of such an effect, the absorbent body 4 can be provided with a high absorption performance that can withstand hair washing applications. It becomes possible. And since the absorption pad 1 which has such a high absorption performance has the water | moisture-content absorption performance which can fully respond to a hair-washing use, the rinse after a shampoo can fully be performed at the time of the use, and the circumference | surroundings of the absorption pad 1 It is possible to easily perform the hair washing of the bedridden person without polluting.

  In the flap portion 5F, which is a laminated structure of the extended portion from the absorbent body 4 of the top sheet 2 and the back sheet 3, the entire overlapped portion of the sheets 2 and 3 is strongly bonded with a peel strength of 8 N / 5 cm or more. However, even if the strong joint portion is disposed only at a part of the overlapping portion, such as the strong joint portion indicated by reference numeral 7 in FIG. Further, in addition to the strong joint portion, a weak joint portion having a lower peel strength than the strong joint portion is formed in the overlapping portion of the sheets 2 and 3 of the flap portion 5F. Also good. The pattern of the weakly joined portion is not particularly limited. For example, in the form shown in FIG. 3, the entire area of the non-arranged region of the strongly joined portion 7 in the overlapped portion of the sheets 2 and 3 of the flap portion 5F is the weakly joined portion. May be. Thus, the use of bonding means such as an adhesive is limited by limiting the arrangement of the strong bonding portions 7 in the overlapping portion of the sheets 2 and 3 of the flap portion 5F to a partial rather than the entire area of the portions. The amount is reduced. Further, as will be described later, as a partial arrangement pattern of the strong bonding portion 7, for example, both ends in the lateral direction Y of the absorbent pad 1 shown in FIG. When “pattern intermittently arranged in the orthogonal direction” is adopted, the diffusion of the liquid in the direction orthogonal to the direction in which the strong joint 7 extends is suppressed, so the absorbent pad due to the wetness of the hot water used for washing the hair 1 strength reduction can be effectively suppressed.

  In the absorbent pad 1 of the present embodiment, as shown in FIG. 3, the strong joint portion 7 has a linear shape in a plane continuous view and is formed so as to surround the peripheral edge 4 </ b> E of the absorber 4. Considering the role expected of the strong joint 7, it is preferable that the strong joint 7 having a planar view line shape is arranged so as to extend along the absorber 4 in the vicinity of the absorber 4. The length of the portion 7 in the longitudinal direction is preferably equal to or longer than the length of the edge of the absorber 4 in the vicinity of the strong joint 7. “Linear” here includes both straight lines and curved lines, and may be continuous lines or broken lines. Particularly preferred is a form in which the linear strong joint 7 surrounds the absorbent body 4, and such a preferred form is adopted in the absorbent pad 1.

  In the absorbent pad 1, the number of linear strong joints 7 differs in the vertical direction X and the horizontal direction Y. That is, as shown in FIG. 3, only one linear strong joint 7 is disposed at both ends along the lateral direction Y of the absorbent pad 1, whereas both sides along the longitudinal direction X of the absorbent pad 1. Three straight strong joints 7 are arranged in the part, and the latter has a larger number of linear strong joints 7. The reason why such an unevenly distributed form of the strong joint portion 7 is adopted in the present embodiment is that the wet state at the time of washing the hair is likely to be in a wet state, both side portions along the longitudinal direction X of the absorbent pad 1 and both end portions along the lateral direction Y. This is because they are different. That is, at both ends along the lateral direction Y of the absorbent pad 1, a leak-proof cuff 6 for preventing leakage of hot water used for washing the hair to the outside is disposed, and in this embodiment, as described above, The leak-proof cuff 6 is a rolled-up portion of the liquid-permeable rear surface sheet 3, and the outer surface of the leak-proof cuff 6 (the surface opposite to the surface that can come into contact with the surface sheet 2) is formed of a sheet that hardly transmits hot water. Therefore, both end portions along the lateral direction Y of the absorbent pad 1 are less likely to be wet when washing the hair, and therefore, the sheets 2 and 3 are less likely to be torn. Since both sides along the direction X are not provided with the leak-proof cuff 6, the sheets 2 and 3 are likely to be torn relatively easily. Therefore, more linear strong joints 7 are disposed on both side portions along the longitudinal direction X of the absorbent pad 1 that are likely to be relatively wet than at both end portions along the lateral direction Y of the absorbent pad 1. .

  Further, as shown in FIG. 3, a plurality of (three in FIG. 3) line-like strong joints extending in the vertical direction X are extended at both ends in the horizontal direction Y of the absorbent pad 1, that is, both sides along the vertical direction X. 7 is intermittently arranged in the lateral direction Y. As described above, the linear strong joints 7 are intermittently arranged from the inner side to the outer side of the absorbent pad 1, specifically, for example, in the lateral direction Y. Because it works like a dike that prevents the transition of the hot water used for shampooing, diffusion in the surface direction of hot water is more effectively suppressed, and the strength caused by the wetness of the hot water used for shampooing Lowering and peeling of the sheets 2 and 3 during or after use of the absorbent pad 1 are more effectively suppressed.

  In the strong joint 7, the joining means between the top sheet 2 and the back sheet 3 is not particularly limited, and various adhesives such as hot melt adhesives, known joining means such as heat seal and ultrasonic seal, and combinations thereof may be used. Can be used. The joining means of the strong joint portion 7 in the present embodiment is an adhesive.

From the viewpoint of more surely exhibiting the effect of the strong joint portion 7 described above, it is preferable to set the dimensions and the like of the respective portions as follows.
The width of one linear strong joint 7 (the length in the direction perpendicular to the length direction of the strong joint 7) is preferably 1 mm or more, more preferably 2 mm or more, more preferably 3 mm or more, and The thickness is preferably 50 mm or less, more specifically, preferably 2 mm or more and 50 mm or less, and more preferably 3 mm or more and 50 mm or less.
The distance D (see FIG. 3) between the plurality of linear strong joints 7 extending in the same direction is preferably 10 mm or more, more preferably 15 mm or more, and preferably 50 mm or less, more preferably 40 mm or less.
The number of linear strong joints 7 on both sides along the longitudinal direction X of the absorbent pad 1 (the edge of the absorbent pad where the leak-proof cuff 6 is not disposed) is preferably two or more, more preferably three. The number is preferably 9 or less, more preferably 8 or less.

  In the absorbent pad 1 of the present embodiment, as described above, a pair of leak-proof cuffs 6 and 6 that stand upward at the time of use extend in the lateral direction Y at both ends in the longitudinal direction X of the absorbent main body 5. The presence of the leak-proof cuff 6 effectively prevents the inconvenience that hot water used for washing the hair leaks out of the absorbent pad 1. In particular, in the present embodiment, as described above, the leak-proof cuff 6 has a folded structure of the flap portion 5F that is Z-shaped in a cross-sectional view along the longitudinal direction X. Therefore, as shown in FIG. 1, a pocket structure is formed between the base wall portion 60 of the leak-proof cuff 6 and the top sheet 2, and this pocket structure more effectively suppresses liquid diffusion and liquid leakage to the outside. Is done. From the viewpoint of ensuring the leakage prevention effect of the leak-proof cuff 6 due to the pocket structure, in the natural state of the absorbent pad 1, the first folding line 65 of the upper end portion 60a of the base wall portion 60, that is, the flap portion 5F. The height H of the folding position from the top sheet 2 (see FIG. 2) is preferably 15 mm or more, more preferably 20 mm or more, and preferably 100 mm or less, more preferably 80 mm or less.

  Further, the leak-proof cuff 6 has not only such a leak-proof function, but also has a function of stabilizing the position of the head 101 by supporting the back neck of the bedridden person 100 to be washed from below as shown in FIG. doing. In this respect, the leak-proof cuff 6 in this embodiment has a relatively wide structure due to the Z-shaped cross-sectional view as described above. Since it fits easily in the neck without gaps, it effectively supports the head 101 and effectively prevents the water used for washing the hair from leaking out of the absorbent pad 1 through the back neck of the bedridden 100. obtain.

In consideration of the function and effect of the leak-proof cuff 6, the following 1) and 2) can be cited as preferred embodiments of the leak-proof cuff 6.
1) A leak-proof cuff 6 standing toward the rear neck of the subject to be washed is disposed at a site corresponding to the rear neck of the subject to be washed (bedbed person) when used in the absorbent pad 1. The upper part that can come into contact with the back neck is an elastic stretchable part 61 having stretchability in the left-right direction, that is, the lateral direction Y of the person to be washed.
2) A plurality of elastic members 62 extending in the lateral direction Y in the elastic expansion / contraction part 61 of the leak-proof cuff 6 corresponding to at least the rear cervical part of the person to be washed in the height direction of the person to be washed (bedbed person), that is, in the longitudinal direction X The width W1 (see FIG. 1) of the elastic stretchable portion 61 in the natural state, which is intermittently arranged, is preferably 30 mm or more, more preferably 40 mm or more, and preferably 120 mm or less, more preferably 100 mm or less.

  The absorbent pad 1 has a horizontal direction Y, that is, a length of the hair wash subject (bedbed person) in the left-right direction is 1.8 times or more as long as the length X, ie, the length of the hair wash subject (bedbed person) in the height direction. In particular, it is preferably 2.0 times or more. Since the shape of the absorbent pad 1 in plan view is a horizontally long shape that is long in the left-right direction of the person to be washed, the absorbent pad 1 is moved in the left-right direction during use of the absorbent pad 1 as shown in FIG. It is possible to appropriately move and change the portion of the absorbent pad 1 located below the head of the person to be washed, so that, for example, a series of hair washing operations (shampooing step, rinsing step, moisture wiping step) Etc.), each part of the absorbent pad 1 can be used properly, and the convenience can be further improved. The upper limit of the ratio of the length in the horizontal direction Y to the length in the vertical direction X is not particularly limited. However, in consideration of the handling properties of the absorbent pad 1, it is preferably 4.5 times or less, more preferably 4.0 times or less.

  In addition, it is preferable that the absorbent pad 1 be configured symmetrically with respect to the longitudinal center 5Cx of the absorbent main body 5 because it is less likely to be lost in positioning of the absorbent pad 1 during use and convenience is improved. In other words, the absorbent pad 1 has a side (the left side in the absorbent pad 1 in FIG. 4) arranged outward in the longitudinal direction X from the top of the head of the hair wash subject (bedbed person) during use, and the back neck of the hair wash subject. It is preferable that it is symmetrically configured on the side corresponding to (right side in the absorption pad 1 of FIG. 4). Moreover, it is preferable that the horizontal direction Y, that is, the left-right direction of the person to be washed (bedbed person) is also configured symmetrically with respect to the horizontal center.

The size of the absorbent pad 1 in the natural state is not particularly limited, but the length in the longitudinal direction X, that is, the height direction of the person to be washed (bedbed person) is preferably 300 mm or more, more preferably 350 mm or more, and preferably 750 mm or less, more preferably 700 mm or less, and the lateral direction Y, that is, the length in the left-right direction of the person to be washed (bedbed person) is preferably 800 mm or more, more preferably 900 mm or more, and preferably 1500 mm or less, more preferably Is 1400 mm or less.
Further, the length of the absorbent body 4 in the longitudinal direction X is preferably 280 mm or more, more preferably 350 mm or more, and preferably 750 mm or less, more preferably 700 mm or less, and the length in the transverse direction Y is preferably It is 740 mm or more, More preferably, it is 800 mm or more, Preferably it is 1300 mm or less, More preferably, it is 1200 mm or less.
Further, the width W2 (see FIG. 1) of the flap portion 5F extending in the longitudinal direction X is preferably 50 mm or more, more preferably 75 mm or more, and preferably 200 mm or less, more preferably 160 mm or less.

  About each member of the absorption pad 1, what was conventionally used in the excrement absorption articles | goods, such as a disposable diaper, can be used without a restriction | limiting especially. Examples of the surface sheet 2 include liquid permeable sheets such as hydrophilic woven fabrics and nonwoven fabrics made of synthetic fibers or natural fibers, porous sheets, and mesh sheets. As the back sheet 3, for example, a resin film such as a polyethylene film or a polypropylene film, a non-woven cloth such as a water-repellent non-woven fabric, a composite sheet obtained by laminating a non-woven fabric and a resin film with heat or an adhesive, etc. Can be mentioned. The “poor liquid permeability” as used herein includes a liquid impermeability that can completely block the permeation of liquid and a property that has a permeability that allows water vapor to permeate. A preferable example of the back sheet 3 is a composite sheet in which a resin film and a non-woven fabric are sequentially laminated in order from the head of the bedridden person (the person to be washed) during use. Such a composite sheet is characterized by excellent texture and strength.

  Generally, a nonwoven fabric has a fiber orientation direction in which fibers are oriented and an orthogonal direction perpendicular thereto, but the fiber orientation direction has a higher tensile strength than the orthogonal direction. Therefore, when a nonwoven fabric is used as the material for forming the absorbent pad 1 (for example, the top sheet 2 and the back sheet 3), the fiber orientation direction of the nonwoven fabric is set to the lateral direction Y of the absorbent pad 1, that is By matching with the direction, the material strength is increased, and the material destruction can be suppressed. Therefore, the lateral strength of the flap portion can be further increased.

As the absorber 4, an absorbent core containing a water-absorbing polymer can be used. The absorbent core can include hydrophilic fibers, and the hydrophilic fibers include hydrophilic fibers such as wood pulp, as well as hydrophilic fibers that are inherently hydrophobic fibers. Fiber can also be used. A typical absorbent core is an aggregate of fibrous materials that contains small pieces of water-absorbing polymer. The basis weight of the absorbent core is preferably 250 g / m ² or more, more preferably 300 g / m ² or more, and preferably 900 g / m ² or less, from the viewpoint of securing an absorption capacity that can sufficiently cope with hair washing applications. More preferably, it is 800 g / m ² or less. In addition, when the basis weight of the absorbent core is increased and the absorption capacity is improved, there is a concern about the tearing of the top sheet and the back sheet that wraps the absorbent core when it absorbs water and swells. The pad 1 has been devised as described above to eliminate such concerns, and a design that purely pursues improvement in absorption performance can be adopted.

  As the water-absorbing polymer contained in the absorber 4 (absorbent core), a particulate polymer is generally used, but a fibrous polymer may be used. When the particulate water-absorbing polymer is used, the shape thereof may be any of a spherical shape, a block shape, a bowl shape, and an amorphous shape. As the water-absorbing polymer, generally, a polymer or copolymer of acrylic acid or an alkali metal acrylate can be used. Examples thereof include polyacrylic acid and salts thereof and polymethacrylic acid and salts thereof. As the polyacrylate and polymethacrylate, sodium salts can be preferably used. In addition, acrylic acid or methacrylic acid, maleic acid, itaconic acid, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, 2- (meth) acryloylethanesulfonic acid, 2-hydroxyethyl (meth) acrylate, styrenesulfonic acid, etc. It is also possible to use a copolymer obtained by copolymerizing the above-mentioned comonomer within a range that does not deteriorate the performance of the superabsorbent polymer. The content of the water-absorbing polymer in the absorber 4 (absorbent core) is preferably 10% by mass or more, more preferably 15% by mass or more, and preferably with respect to the total mass of the absorber 4 (absorbent core). Is 70% by mass or less, more preferably 60% by mass or less.

  The centrifugal holding amount of the absorbent pad 1 with respect to deionized water is preferably 2000 g or more, more preferably 3000 g or more, and particularly preferably 3500 g or more. Moreover, the centrifugal retention amount with respect to the deionized water of the water absorbing polymer used for the absorber 4 (absorbent core) is preferably 200 g / g or more, more preferably 225 g / g or more, more preferably 250 g / g or more. The centrifugal retention amount of the water-absorbing polymer is a property related to the water absorption amount (water absorption magnification) of the water-absorbing polymer. The larger the value of the centrifugal retention amount, the larger the water absorption amount (water absorption magnification) of the water-absorbing polymer. By using a water-absorbing polymer whose amount of centrifugal retention with respect to deionized water is within the above range, an absorbent pad suitable for hair washing applications that require absorption of a relatively large amount of hot water of several liters, that is, centrifugal retention with respect to deionized water An absorbent pad having an amount of 2000 g or more is obtained. The amount of centrifugal retention of each of the absorbent pad and the water-absorbing polymer is measured by the following method.

<Measurement method of centrifugal retention amount of absorbent pad>
Nylon woven fabric (mesh opening 255, sold by Sanriki Manufacturing Co., Ltd., product name: nylon net, standard: 250 x mesh width 1150 mm x 30 m) is cut into a rectangle with a width of 50 cm and a length of 100 cm and folded in the middle in the longitudinal direction. Then, a part of the periphery of the folded woven fabric is heat-sealed to produce a nylon bag having a width of 50 cm (inner dimension: 45 cm) and a length of 50 cm. The unheat-sealed portion at the periphery of the nylon bag becomes an opening used when the measurement sample (absorption pad) is put into the nylon bag. The measurement sample is sealed in this nylon bag and the amount of centrifugal retention is measured. The measurement sample size is larger than that of the nylon bag, and the entire measurement sample is stored in the nylon bag without being bent. When the measurement sample cannot be obtained, the measurement sample is divided into a plurality of pieces (for example, the absorption pad as the measurement sample is divided into two to six equal parts), and the amount of centrifugal retention is measured for each of the plurality of divided measurement samples.
More specifically, for example, an absorption pad, which is a measurement sample larger in size than a nylon bag, is cut out by dividing it into a size having a width of 40 cm or less and a length of 40 cm or less, and each of the plurality of divided measurement samples is divided and measured. After putting in a nylon bag so that a part of the sample does not overlap with the other part, the opening of the nylon bag is heat-sealed. The nylon bag in which the measurement sample (divided measurement sample) is thus sealed is immersed in deionized water adjusted to 25 ° C. After 30 minutes from the start of soaking, the nylon bag is taken out from deionized water, suspended in a vertical state for 1 hour and drained, and then dehydrated using a centrifugal dehydrator (Kokusan Co., Ltd., model H-130C special model). The dehydration condition is 143 G (800 rpm) for 10 minutes. After dehydration, the weight of the sample is measured, and the target centrifugal retention amount is calculated according to the following formula.
Centrifugal retention amount (g) = a′−b−c
In the above formula, a ′ is the total weight (g) of the measurement sample and nylon bag after centrifugal dehydration, b is the weight (g) before water absorption (when dried) of the nylon bag, and c is before water absorption (when drying) of the measurement sample. ) Weight (g). The measurement is performed three times (n = 3), and the average value is taken as the measurement value. The measurement is performed at 23 ± 2 ° C. and humidity 50 ± 5%, and the measurement sample is stored in the same environment for 24 hours or more before the measurement.
As described above, when the absorption pad as the measurement sample is divided, the centrifugal retention amount is measured by the above procedure for each of the plurality of divided measurement samples, and the total value of the plurality of centrifugal retention amounts is measured. The amount of centrifugal retention of the absorption pad that is the sample.

<Measurement method of centrifugal retention amount of water-absorbing polymer>
Nylon woven fabric is cut into a rectangle with a width of 20 cm and a length of 60 cm, folded in half at the center in the width direction and the center in the longitudinal direction, and a part of the periphery of the folded woven fabric is heat sealed to a width of 10 cm ( A nylon bag having an inner size of 16 cm) and a length of 30 cm is prepared. 1.00 g of a water-absorbing polymer as a measurement sample is precisely weighed and put into the bag through the opening of the produced nylon bag, and then the opening is heat sealed to enclose the water-absorbing polymer in the bag. . At this time, the water-absorbing polymer is put into the nylon bag so that the water-absorbing polymer is uniformly distributed inside the nylon bag in a plan view of the nylon bag. Except for the above points, the method is the same as the above <Method for measuring the centrifugal retention amount of the absorbent pad>, but the centrifugal retention amount of the water-absorbing polymer is calculated according to the following equation.
Centrifugal retention amount (g / g) = (a′−b−c) / c
In the above formula, a ′ is the total weight (g) of the measurement sample and nylon bag after centrifugal dehydration, b is the weight (g) before water absorption (when dried) of the nylon bag, and c is before water absorption (when drying) of the measurement sample. ) Weight (g).

  The adjustment of the centrifugal retention amount of the water-absorbing polymer can be performed, for example, by adjusting the surface crosslinking degree of the water-absorbing polymer. Generally, when the surface cross-linking degree of the water-absorbing polymer increases (surface cross-linking treatment proceeds), the centrifugal retention amount (water absorption magnification) tends to decrease. Specifically, for example, by performing surface cross-linking treatment (post-crosslinking treatment) again on the water-absorbing polymer that has been subjected to surface cross-linking treatment manufactured by a conventional method, the centrifugal retention amount can be adjusted to the above range. Is possible. Moreover, regardless of whether surface crosslinking is performed or not, the centrifugal retention amount can also be adjusted by increasing the degree of crosslinking of the entire water-absorbing polymer.

  The absorbent body 4 may include an absorbent core and a core wrap sheet that covers the absorbent core. As the core wrap sheet, a liquid permeable sheet that can be used as the top sheet 2 can be used, and is typically a nonwoven fabric or tissue paper. Nonwoven fabrics are particularly preferable because they have a higher tensile strength when wet than tissue paper and can increase the adhesive strength by heat sealing or an adhesive. When covering the absorbent core with the core wrap sheet, the upper side core wrap sheet that covers the upper surface of the absorbent core (the surface that is directed to the head of the person being washed) and the lower surface of the absorbent core (when used) If the lower surface side core wrap sheet covering the surface opposite to the surface directed to the head of the hair wash person is integrated, the degree of swelling due to water absorption of the absorbent core is suppressed, so that Combined with the effect obtained by setting the peel strength at the strong joint 7 of the flap portion 5F within a specific range, the peeling of the top sheet 2 and the back sheet 3 during or after use of the absorbent pad 1 is more effective. Can be suppressed. Here, “the upper surface side core wrap sheet and the lower surface side core wrap sheet are integrated” includes a form in which both sheets are one continuous sheet and two core wraps that are inherently independent of each other. And a form in which the sheets are joined together by a joining means such as an adhesive. Further, it is preferable that the core wrap sheet and the front surface sheet 2 or the back surface sheet 3 adjacent thereto are bonded to each other by a bonding means such as an adhesive because peeling of both the sheets 2 and 3 can be more effectively suppressed. . In particular, the core wrap sheet is joined to both sheets 2 and 3 along the lateral direction Y of the absorbent pad 1, that is, the joint between the core wrap sheet and both sheets 2 and 3 extends in the lateral direction Y in plan view. The form (for example, the form in which the joint portion extends in the lateral direction Y in plan view) is such that the sheets 2 and 3 are peeled off at the back neck side or the top side of the subject to be washed. It is preferable because it can be more effectively suppressed.

  Next, the absorption pad set for hair washing of this invention is demonstrated with reference to drawings based on the preferable embodiment. 5-7, the absorption pad set 10 for hair washing which is one Embodiment of the absorption pad set for hair washing of this invention is shown. In addition, about the absorption pad set for hair washing of this invention, the different structure part from the absorption pad for hair washing of this invention mentioned above is mainly demonstrated, and the same component attaches | subjects the same code | symbol and abbreviate | omits description. The description of the absorbent pad for hair washing of the present invention described above is appropriately applied to components that are not particularly described.

  As shown in FIGS. 5 to 7, the absorbent pad set 10 of the present embodiment includes a main pad 11 and an auxiliary pad 12 that can be used by being superimposed on the main pad 11. The main pad 11 is composed of the hair-absorbing absorbent pad 1 described above, and the configuration, usage, and the like are as described above. On the other hand, the auxiliary pad 12 plays a role of supporting the hair washing operation performed using the main pad 11, and is a liquid-permeable first sheet 13 and a liquid-permeable or liquid-permeable second sheet. 14 and an auxiliary absorber 15 disposed between both sheets 13 and 14. The basic configuration of the auxiliary pad 12 is substantially the same as that of the main pad 11, that is, the absorbent pad 1 described above.

  In the absorbent pad set 10 of the present embodiment, in the expanded state, that is, in a state where the elastic members of the respective parts of the absorbent pad set 10 are expanded and expanded in a planar shape, the auxiliary pad 12 has a main pad 11 as shown in FIG. The area in a plan view is smaller than that of the main pad 11 and is smaller than the main pad 11 in a plan view. Furthermore, as shown in FIG. 5, the auxiliary pad 12 in the present embodiment has a shorter length in the lateral direction Y than the absorber 4 of the main pad 11. Further, the first sheet 13 and the second sheet 14 constituting the auxiliary pad 12 have the same shape (rectangular shape) of the same size in plan view, and each has a larger area than the auxiliary absorber 15 and has an auxiliary shape. It has an extending portion that extends outward from the peripheral edge 15E of the absorber 15. The extending portions from the peripheral edge 15E of the auxiliary absorbent body 15 of both the sheets 13 and 14 are joined and integrated with each other to form a flap portion 16. The flap portion 16 that extends from the peripheral edge 15 </ b> E of the auxiliary absorbent body 15 is arranged along the peripheral edge 15 </ b> E of the auxiliary absorbent body 15 and surrounds the auxiliary absorbent body 15. Each of the top sheet 13 and the back sheet 14 and the auxiliary absorbent body 15 may be joined by an adhesive.

  Further, in the absorbent pad set 10 of the present embodiment, the end portion of the auxiliary pad 12 is joined to one end portion (one side portion along the lateral direction Y) of the main pad 11 in the longitudinal direction X. 12 is united. More specifically, one end portion of the flap portion 16 that forms the outline of the auxiliary pad 12 having a quadrangular shape in plan view is the rear end of the person to be washed (bedbed person) at the time of use among the both ends in the longitudinal direction X of the main pad 11. A pad joint 17 is formed by joining to an end opposite to the longitudinal end corresponding to the neck (vertical end not contacting the head and neck of the person to be washed in use). Both pads 11, 12 are integrated via 17. The auxiliary pad 12 is located at the center in the vertical direction X of the main pad 11. As a joining means of both the pads 11 and 12, well-known joining means, such as various adhesives, such as a hot-melt-adhesive, a heat seal, and an ultrasonic seal, can be used. Further, a perforation for separation (not shown) may be included in the pad joint portion 17 so that both pads 11 and 12 can be separated.

  In this embodiment, as shown in FIGS. 5 to 7, the auxiliary pad 12 is a free end portion 61 a of the elastic expansion / contraction portion 61 of the leak-proof cuff 6 in the main pad 11. It is joined to. Thus, when the auxiliary pad 12 is joined to the free end 61a of the leak-proof cuff 6, as shown in FIG. 6, the auxiliary pad 12 is turned up to the side opposite to the main pad 11 side and absorbed. When the pad set 10 is used for washing hair in a form in which the main pad 11 and the auxiliary pad 12 do not overlap (auxiliary pad deployment form described later), the leak-proof cuff 6 to which the auxiliary pad 12 is joined is formed by the auxiliary pad 12. Since it becomes difficult to be crushed, the predetermined standing height of the leak-proof cuff 6 is maintained, and the leak-proof effect expected of the leak-proof cuff 6 is more reliably exhibited.

  The auxiliary pad 12 can be rotated about the pad joint portion 17 in the longitudinal direction X, that is, the height direction of the person to be washed, and thus can be used in a plurality of usage forms. That is, in the absorbent pad set 10 of the present embodiment, as shown in FIGS. 5 and 6, the absorbent body 4 of the main pad 11 and the auxiliary absorbent body 15 of the auxiliary pad 12 do not overlap and the second sheet 14 is the auxiliary pad. 12 may be employed (auxiliary pad unfolding form), or the absorbent body 4 of the main pad 11 and the auxiliary absorbent body 15 of the auxiliary pad 12 overlap each other as shown in FIG. A form in which the sheet 13 forms the upper surface of the auxiliary pad 12 (auxiliary pad storage form) may be employed. If the auxiliary pad 12 is turned up around the pad joint 17 from the auxiliary pad storage form, the auxiliary pad is deployed, and the turned up auxiliary pad 12 can be rotated around the pad joint 17 toward the main pad 11. In this case, the auxiliary pad is stored. 6 and 7, for the sake of easy explanation, the auxiliary pad 12 is described as being lifted by being supported from below by the leak-proof cuff 6 of the main pad 11. The pad 12 is not supported in a lifted state as shown in the figure. In the auxiliary pad unfolded form, the auxiliary pad 12 is usually placed around the main pad 11, and in the auxiliary pad storage form, usually the auxiliary pad is supported. The pad 12 is directly placed on the top sheet 2 of the main pad 11.

  When washing hair using the absorbent pad set 10 of the present embodiment, the above two types of usage forms can be arbitrarily selected. For example, if there is a relatively large amount of hair for the person to be washed, the amount of hot water used for washing the hair is large, and there is a concern that the main pad 11 alone cannot sufficiently absorb hot water. As the auxiliary pad storage form (see FIG. 7), all or part of the hair washing operation is performed with the auxiliary pad 12 (auxiliary absorbent body 15) superimposed on the main pad (absorber 4). Also, for example, first, the auxiliary pad is developed on the main pad 11 as shown in FIG. 5 and FIG. 6 and then the auxiliary pad is stored on the clean clean auxiliary pad 12 that is unused. It can be performed.

  Moreover, in the said auxiliary pad expansion | deployment form, although the auxiliary pad 12 does not contribute to active absorption of the hot water used for shampooing, the hot water which scattered from the main pad 11 on the opposite side to the shampooing object at the time of shampooing In this way, wetting and dirt around the main pad 11 are effectively prevented. Considering the role of the auxiliary pad 12 in the auxiliary pad deployment form as described above, the liquid permeable sheet similar to the first sheet 13 is used as the second sheet 14 forming the upper surface in the form. Selection may be possible, or a liquid-impermeable sheet may be used. In addition, as each member of the auxiliary pad 12, what can be used as a member which plays the same role in the main pad 11 can be used suitably.

  In addition, the absorbent pad set 10 of the present embodiment has a high absorption performance that can sufficiently cope with a hair washing application, and the absorbent body that bears the high absorption performance is separable from the main pad 11 (absorbent body 4). The auxiliary pad 12 (auxiliary absorber 15) is divided into the auxiliary pad 12 and the auxiliary pad 12 is stacked on the main pad 11, so that the same level can be obtained using one continuous absorber. Compared to the form that secures the absorption performance, the use form can be compact, and it can sufficiently cope with the case where the work space for washing the hair is narrow.

The size of the auxiliary pad 12 in the natural state is not particularly limited, but the length in the longitudinal direction X, that is, the height direction of the person to be washed (bedbed person) is preferably 400 mm or more, more preferably 440 mm or more, and preferably 800 mm or less, more preferably 750 mm or less. The lateral direction Y, that is, the length in the left-right direction of the person to be washed (bedbed person) is preferably 400 mm or more, more preferably 440 mm or more, and preferably 900 mm or less, more preferably Is 800 mm or less.
The length of the auxiliary absorber 15 in the longitudinal direction X is preferably 250 mm or more, more preferably 300 mm or more, and preferably 650 mm or less, more preferably 600 mm or less, and the length in the lateral direction Y is preferably Is 300 mm or more, more preferably 350 mm or more, and preferably 800 mm or less, more preferably 700 mm or less.
The basis weight of the auxiliary absorbent 15 is preferably 250 g / m ² or more, more preferably 300 g / m ² or more, and preferably 900 g / m ² or less, more preferably 800 g / m ² or less.
The ratio of the area of the one side of the auxiliary absorber 15 in the auxiliary pad 12 to the area of the one side of the absorbent body 4 in the main pad 11 is preferably 0.15 or more, more preferably 0.20 or more as the latter / the former. And preferably 0.50 or less, more preferably 0.45 or less.

  Although the present invention has been described above, the present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention. For example, the planar view shape of the absorbent pad for hair washing of the present invention (the main pad in the hair-absorbing-absorption pad set of the present invention) is not limited to the rectangular shape as in the absorbent pad 1 of the above-described embodiment, but is anisotropic such as an elliptical shape. In addition to the sexual shape, an isotropic shape such as a square shape or a circular shape may be used. However, as described above, the length of the hair wash subject (bedbed person) in the left-right direction (lateral direction) is orthogonal to this. An anisotropic shape longer than the length in the height direction (vertical direction) of the person is preferable. In addition, from the viewpoint of preventing inconvenience that the liquid once absorbed by the absorbent body 4 flows backward to the topsheet 2 side, a liquid-permeable liquid backflow prevention layer made of a nonwoven fabric or the like is provided between the topsheet 2 and the absorbent body 4. May be interposed.

  In the hair-absorption pad set of the present invention, the joining position of the auxiliary pad in the main pad is arranged at the end in the vertical direction X as shown in FIG. The end portion in the horizontal direction Y may be used. In addition, the main pad and the auxiliary pad do not need to be integrated, and the hair washing amount absorbing pad set of the present invention includes a form including the main pad and an independent auxiliary pad separate from the main pad. It is. Even in a form in which the two pads are not integrated, a use form according to the two kinds of use forms described above can be adopted. Further, in the auxiliary pad storing form as shown in FIG. 7, a pair of leak-proof cuffs that stand upward at the time of use are provided at both lateral ends on the upper surface side (first sheet side) of the auxiliary pad in the vertical direction. The auxiliary pad leakage prevention cuff can be configured in the same manner as that of the main pad.

FIG. 8 is a more preferred specific form of the hair-washing absorbent pad 1 of the present invention, and is a (a) front view and a (b) right-side view showing the natural state of the hair-washing absorbent pad 1. The rear view appears symmetrically with the front view. The left side view appears symmetrically with the right side view. 9 is a (a) plan view and (b) bottom view of the hair-washing absorbent pad 1 shown in FIG. FIG. 10 is a perspective view of the hair-washing absorbent pad 1 shown in FIG.
11A is a cross-sectional view taken along the line AA in FIG. 8A, and FIG. 11B is an enlarged cross-sectional view taken along the line AA in FIG. 8A. 12 shows a state in which the elastic member 62 of the hair washing absorbent pad 1 shown in FIG. 8 is extended to expand the hair washing absorbent pad 1 into a flat shape (a) Front view, (b) Right side view It is a figure and (c) top view. The rear view appears symmetrically with the front view. The left side view appears symmetrically with the right side view. 13A is a bottom view and FIG. 13B is a perspective view of the hair-washing absorbent pad shown in FIG. 12. The appearance of the absorbent pad for hair washing 1 is excellent in design. When the absorbent pad for washing hair 1 shown in FIG. 8 is changed to an application for design registration, the design relating to the application is a registration requirement stipulated in the Design Act. Meet.
11-13 becomes a reference figure when the absorption pad 1 for hair washing shown in FIG. 8 is changed into a design registration application. FIG. 4 is also a reference diagram showing the usage state of the hair-washing absorbent pad 1 shown in FIG.
The natural length of the absorbent pad 1 for hair washing shown in FIG. 8 (the length in the left-right direction in the front view) is, for example, 85 cm.

DESCRIPTION OF SYMBOLS 1 Absorbent pad for hair washing 2 Top sheet 3 Back sheet 4 Absorber 5 Absorbent main body 5F Flap part (extension part from the periphery of an absorber)
6 Leak-proof cuff 60 Base wall part 61 Elastic expansion / contraction part 62 Elastic member 63 Elastic expansion / contraction part fixing part 7 Strong joint 10 Absorbent pad set for hair washing 11 Main pad 12 Auxiliary pad 13 First sheet 14 Second sheet 15 Auxiliary absorption Body 16 Flap part 17 Pad joint part X Longitudinal direction (Height direction of the bedridden to be washed)
Y lateral direction (left and right direction of the bedridden person to be washed)

Claims (9)

An absorbent pad for shampoo that is placed under the head of the bedridden at the time of washing the bedridden and can be used to absorb hot water used for washing the hair,
Between the two sheets, a liquid-permeable top sheet disposed at a position relatively close to the head of the bedridden during use, a liquid-impermeable back sheet disposed at a position relatively far from the head, An absorbent body having an absorbent body arranged in a vertical direction corresponding to the height direction of the bedridden and a lateral direction corresponding to a direction perpendicular to the height direction. ,
Each of the top sheet and the back sheet has an extending portion extending outward from the periphery of the absorber, and the extending portions of both sheets are strongly bonded portions having a peel strength of 8 N / 5 cm or more. Absorbent pads for hair washing that are joined to each other through.   The absorbent pad for shampoo according to claim 1, wherein the absorbent pad for shampoo has a centrifugal retention amount of 2000 g or more against deionized water.   The absorption pad for hair washing according to claim 1 or 2, wherein the strong joint portion in a planar view shape is formed at both lateral ends of the absorption pad for hair washing so as to extend in the vertical direction.   The hair-absorbing absorbent pad according to claim 3, wherein the strong joints in a planar view are intermittently arranged in a lateral direction. A pair of leak-proof cuffs that stand upward at the time of use are arranged at both ends in the longitudinal direction of the absorbent main body so as to extend in the lateral direction,
The leak-proof cuff is configured to include a base wall portion and an elastic expansion / contraction portion in order from the absorbent main body, and the base wall portion is positioned closer to the vertical center of the absorbent main body than the lower end side. The elastic stretchable portion is connected to the upper end portion of the base wall portion, and has a free end portion disposed at a position farther from the longitudinal center of the absorbent body than the upper end portion of the base wall portion. And the absorption pad for hair washing of any one of Claims 1-4 which has a stretching property in the said horizontal direction.   The absorbent pad for hair washing according to any one of claims 1 to 5, wherein the length in the horizontal direction is at least twice as long as the length in the vertical direction. An absorbent pad set for shampoo comprising a main pad comprising the shampoo absorbent pad according to any one of claims 1 to 6 and an auxiliary pad that can be used by being superimposed on the main pad,
The auxiliary pad is an absorbent pad set for shampooing comprising a liquid permeable first sheet, a liquid permeable or liquid permeable second sheet, and an auxiliary absorbent body disposed between both sheets.   The absorbent pad set for hair washing according to claim 7, wherein an end of the auxiliary pad is joined to an end of the main pad in the vertical direction or the horizontal direction, and both pads are integrated. The absorbent pad set for hair washing according to claim 7 or 8, wherein in the developed state, the auxiliary pad has a smaller area in plan view than the main pad.