JP2013000286A - Disposable auxiliary pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable auxiliary pad which is firmly fixed to clothes and is not easily shifted when worn, and is easily detachable from the clothes after use.SOLUTION: The disposable auxiliary pad includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet, and a fixing member to be detachably fixed to an inner surface of clothes is provided on a back surface side of the back sheet. The fixing member has a base material sheet and a plurality of hook members erected on the base material sheet. The hook member has a stem and a head provided on the distal end of the stem, and the head is in a shape having a short diameter and a long diameter larger than the diameter of the stem in the plan view. The fixing member is attached such that the long diameter direction of the head coincides with the width direction of the disposable auxiliary pad.

Description

  The present invention relates to a disposable auxiliary pad used by being attached to a disposable diaper body or a sanitary napkin.

  In recent years, a technique related to a disposable auxiliary pad using a hook member as a fixing member has been developed. For example, Patent Literature 1 discloses a disposable auxiliary pad in which a liquid-permeable top sheet, an absorbent body, and a liquid-impervious back sheet are laminated, and the outer surface of the back sheet is attached to and detached from a fiber group. An auxiliary pad is disclosed in which a substantially rectangular hook-and-loop fastener that can be joined freely is provided to be deviated from the center of the auxiliary pad toward one end edge in the longitudinal direction of the auxiliary pad.

  Patent Document 2 has both side edges extending in the vertical direction facing each other, and both end edges extending in the horizontal direction facing each other, a liquid-permeable top sheet, a liquid-impermeable back sheet, The liquid-absorbent core interposed between the sheets and a pair of liquid-resistant leak-proof sheets that are located on the outer surface of the top sheet and extend in the longitudinal direction, and each of the leak-proof sheets has both side edges A fixed side portion that is fixed to the top sheet positioned at a portion, a free side portion that has an elastic stretchable member that extends in the longitudinal direction and is attached in an extended state and has an upward orientation from the outer surface of the top sheet, and A body fluid-absorbing inner panel having a fixed end portion positioned at both end edges and fixed to the top sheet, and can be hooked on an inner surface of an outer member that holds the inner panel and is continuous in the lateral direction. Less One substantially rectangular male surface fastener is located at a required portion of the back sheet and fixed to the outer surface of the back sheet, and at least one of the fixed side portion and the fixed end portion of the leakproof sheet is The back sheet and the surface in a state of extending from both side edges of the inner panel to the outer surface side of the back sheet and covering both lateral end portions of the surface fastener located at both side edges of the inner panel The inner panel is characterized by being fixed to a fastener.

  Patent Document 3 includes a water-permeable surface sheet, a water-impermeable back sheet, and an absorbent core interposed between the both sheets, and an attachment member that can be removably attached to the inner surface of the clothing on the back sheet A hook element comprising: a shaft in which the mounting member stands substantially perpendicular to the substrate; and a cap formed by a protrusion extending in at least one direction at the tip of the shaft. A plurality of fastener hook members, wherein the cap element has a cap diameter of 275 μm to 375 μm in at least one of a longitudinal direction and a perpendicular direction of the cap, and an absorbent article is disclosed. Yes.

  Patent Document 4 discloses both ends in the longitudinal direction provided with a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorber disposed between the liquid-permeable top sheet and the liquid-impervious back sheet. And an absorbent article body having a shape having both sides in the width direction, and the absorbent article body has an outer side of the absorbent body by at least one of the liquid-permeable surface sheet and the liquid-impermeable back sheet. A first flap portion is formed on the surface side of the liquid-permeable surface sheet, and a second end having a free end is formed on both sides in the width direction of the absorbent article body along the longitudinal direction of the absorbent article body. Is formed of the liquid-impervious top sheet, and on the side opposite to the absorbent body of the liquid-impervious back sheet, a third end having a free end shape along the longitudinal direction of the absorbent article body. A flap portion is formed, and the second flap portion has a base end side on the liquid-permeable side. It is fixed to either the top sheet or the liquid-impervious back sheet, the second flap elastic body is disposed along the longitudinal direction of the absorbent article body on the tip side, and the third flap portion is A disposable absorbent article characterized in that a base end side is fixed to the liquid-impervious back sheet, and a third flap elastic body is disposed along the longitudinal direction of the absorbent article body on the distal end side. It is disclosed.

  Patent Document 5 includes a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorber disposed between the top sheet and the back sheet, and is used by being attached to a diaper body. An inner absorbent article, wherein the diaper main body is formed along an outer body and each of both side edges in the width direction of the outer body, and a pair of leg-gathering gathers in contact with a wearer's leg. And a first fastening member that is detachably fastened to the diaper main body is provided along each of both side edges in the width direction of the back surface of the backsheet. An article is disclosed.

JP-A-9-276312 JP 2001-129011 A Japanese Patent Laid-Open No. 2003-210524 JP 2004-305465 A JP 2009-240561 A

  As described above, the disposable auxiliary pad is provided with a fixing member for attaching to clothing such as a diaper main body and a sanitary napkin. When the disposable auxiliary pad is worn, it is required to be firmly fixed so that the disposable auxiliary pad does not deviate from the clothes, but it is required that the disposable auxiliary pad can be easily removed after use. However, if it is weakly fixed to the clothes, there is a problem that the disposable auxiliary pad is displaced at the time of wearing and the fitting property is impaired. On the other hand, if it is firmly fixed to the clothes, it becomes difficult to remove, and there is a problem that the inner surface of the clothes is damaged at the time of removal.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a disposable auxiliary pad that is firmly fixed to the clothes when worn and is not easily displaced, and can be easily removed from the clothes after use. .

  The disposable auxiliary pad of the present invention has a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body disposed between the top sheet and the back sheet. A disposable auxiliary pad provided on the back side with a fastening member that is detachably fastened to the inner surface of the garment, wherein the fastening member comprises a base sheet and a plurality of hook members that stand on the base sheet. And the hook member has a stem and a head provided at the tip of the stem, and the head has a shape having a short diameter and a long diameter larger than the diameter of the stem in plan view. The fixing member is attached so that the major axis direction of the head coincides with the width direction of the disposable auxiliary pad.

  The hook member of the fastening member used in the present invention has a shape in which the head protrudes from the stem at least in the long diameter direction in plan view. The hook member having the head shape has a strong engagement force in the major axis direction and a weak engagement force in the minor axis direction. Therefore, if the fastening member is attached so that the major axis direction of the head coincides with the width direction of the disposable auxiliary pad, the engaging force of the disposable auxiliary pad is strong in the width direction of the disposable auxiliary pad and in the length direction. become weak. As a result, the disposable auxiliary pad of the present invention is not easily displaced in the width direction and can be easily removed in the length direction.

  It is also preferable that the head has a minor axis that is equal to the diameter of the stem or shorter than the diameter of the stem, or has a minor axis that is larger than the diameter of the stem. By controlling the relationship between the minor axis of the head and the stem diameter, the engagement force in the minor axis direction can be adjusted. Examples of the shape of the head include a substantially rectangular shape or a substantially elliptical shape in plan view.

  The disposable auxiliary pad has a front side portion, a rear side portion, a crotch portion positioned between the front side portion and the rear side portion in the length direction, and the fastening member is attached to the front side portion and the rear side portion. In the lengthwise crotch portion of the disposable auxiliary pad, it is preferable that a region where no fastening member is present is provided. In addition, the disposable auxiliary pad has a center portion and both side edge portions located on both sides of the center portion in the width direction, and the disposable auxiliary pad is provided on both side edges in the width direction. It is preferable that a region where no fastening member is present is provided in the center in the width direction of the pad.

  Since the disposable auxiliary pad of the present invention is firmly fixed to the clothes when worn, it is difficult to shift in the width direction. After use and when adjusting the position, it can be easily removed from the clothing in the length direction.

The enlarged plan view of the fastening member used by this invention. The enlarged view of a hook member. The enlarged view of a hook member. The enlarged view of a hook member. The top view of the disposable auxiliary pad of preferable embodiment of this invention (The top view seen from the top sheet side. A part is notched). The reverse view (development view seen from the back seat | sheet side) of the disposable auxiliary pad of preferable embodiment of this invention. Sectional schematic drawing of the II line of the disposable auxiliary pad of FIG. The top view of the disposable auxiliary pad which concerns on preferable embodiment of this invention (The top view seen from the top sheet side. A part is notched). The reverse view (development view seen from the back seat | sheet side) of the disposable auxiliary pad of preferable embodiment of this invention. The cross-sectional schematic diagram of the II-II line of the disposable auxiliary pad of FIG. The back view (development view seen from the back seat | sheet side) of the auxiliary pad of preferable embodiment of this invention. Explanatory drawing explaining the usage example of a disposable auxiliary pad. Explanatory drawing explaining the usage example of a disposable auxiliary pad. Explanatory drawing explaining the attachment method to the diaper main body of a disposable auxiliary pad. Explanatory drawing explaining the preparation methods of the hook tape base material for engagement force tests. Explanatory drawing explaining the preparation methods of the top sheet base material for engagement force tests. Explanatory drawing explaining the lamination | stacking method of the test piece for T-type peeling tests. Explanatory drawing explaining a T-type peeling test method.

  The disposable auxiliary pad of the present invention has a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body disposed between the top sheet and the back sheet. A disposable auxiliary pad provided on the back side with a fastening member that is detachably fastened to the inner surface of the garment, wherein the fastening member comprises a base sheet and a plurality of hook members that stand on the base sheet. And the hook member has a stem and a head provided at the tip of the stem, and the head has a shape having a short diameter and a long diameter larger than the diameter of the stem in plan view. The fixing member is attached so that the major axis direction of the head coincides with the width direction of the disposable auxiliary pad.

  Hereinafter, the present invention will be described in detail. The disposable auxiliary pad of the present invention includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet.

  The liquid-permeable top sheet is a non-woven fabric formed of a liquid-permeable sheet material, for example, a hydrophilic fiber, and quickly captures moisture from excrement from the wearer and moves it to the absorbent body. Nonwoven fabrics used as the top sheet are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, spunlace nonwoven fabrics, and spunbond nonwoven fabrics, and cellulose, rayon, cotton, etc. are usually used as hydrophilic fibers forming these nonwoven fabrics. . In addition, as the top sheet, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surfaces are hydrophilically treated with a surfactant may be used.

  An absorber is arrange | positioned between a liquid-permeable top sheet and a liquid-impermeable back sheet, and absorbs the water | moisture content which permeate | transmitted the top sheet, and fixes it quickly. The absorbent is, for example, a mixture of a hydrophilic fiber such as pulverized pulp fiber or cellulose fiber mixed with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) wrapped in tissue paper or a liquid-permeable nonwoven fabric. It is formed. It is preferable that tissue paper, liquid-permeable nonwoven fabric, and the like that wrap around the hydrophilic fiber are bonded to the hydrophilic fiber and the water-absorbing polymer with a hot melt adhesive. It is possible to prevent the loss of the shape of the hydrophilic fiber and the dropping of the water-absorbing polymer (particularly, the dropping after water absorption).

  As the back sheet, a water-repellent or liquid-impervious non-woven fabric (for example, spunbond non-woven fabric, melt blown non-woven fabric, SMS (spunbond / non-woven fabric) formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon). Melt blow / spun bond (non-woven fabric)) and water-repellent or liquid-impervious plastic film are used to prevent the excretion of moisture that has reached the back sheet from exuding to the outside of the disposable auxiliary pad. When a plastic film is used for the back sheet, it is preferable to use a plastic film having moisture permeability (breathability) from the viewpoint of preventing stuffiness and improving the wearer's comfort.

  A fastening member that is detachably fastened to the inner surface of the garment is provided on the back side of the backsheet of the disposable auxiliary pad of the present invention. The fastening member has a base sheet and a plurality of hook members standing on the base sheet, and the hook member has a stem and a head provided at the tip of the stem, In the plan view, the shape has a short diameter and a long diameter larger than the diameter of the stem, and the fastening member is attached so that the long diameter direction of the head coincides with the width direction of the disposable auxiliary pad. .

  The hook member used in the present invention has a shape in which the head protrudes from the stem at least in the major axis direction in plan view. The hook member having the head shape has a strong engagement force in the major axis direction and a weak engagement force in the minor axis direction. Therefore, if the fastening member is attached so that the major axis direction of the head coincides with the width direction of the disposable auxiliary pad, the engaging force of the disposable auxiliary pad is strong in the width direction of the disposable auxiliary pad and in the length direction. become weak. As a result, the disposable auxiliary pad of the present invention is not easily displaced in the width direction and can be easily removed in the length direction.

  The short diameter of the head of the hook member is not particularly limited, but is preferably shorter than the stem diameter or equal to the stem diameter. If the minor axis of the head is shorter than or equal to the stem diameter, the engagement force in the minor axis direction is reduced. On the other hand, when increasing the engagement force in the minor axis direction, the minor axis of the head of the hook member may be larger than the stem diameter. If the head protrudes from the stem also in the minor axis direction, the engagement force in the minor axis direction is improved.

  The head shape of the hook member is not particularly limited, but is preferably substantially rectangular or substantially elliptical in plan view. The head may protrude from the stem in only one direction of the long diameter direction, but preferably protrudes from the stem in two directions in the long diameter direction. The cross-sectional shape (plan view) of the stem may have a circular shape, a polygonal shape, a cross shape, or an X-shaped irregular cross-sectional shape. Further, the stem may be any of a columnar shape, a prismatic shape, a conical shape, a pyramid shape, etc., but a cylindrical shape or a conical shape is preferable. It is preferable that the stem is coupled to substantially the center of the head shape in plan view. The head shape of the hook member can be observed with an electron microscope, for example.

  The major axis of the head is not particularly limited, but is preferably 250 μm or more, more preferably 350 μm or more, preferably 500 μm or less, and more preferably 450 μm or less. The minor axis of the head is not particularly limited, but is preferably 170 μm or more, more preferably 180 μm or more, preferably less than 250 μm, and more preferably 200 μm or less.

  The height of the stem of the hook member is not particularly limited, but is preferably 200 μm or more, more preferably 250 μm or more, preferably 700 μm or less, and more preferably 350 μm or less. Further, the diameter of the stem of the hook member is not particularly limited, but is preferably 120 μm or more, more preferably 150 μm or more, preferably less than 250 μm, and more preferably 200 μm or less. In the case of a conical or pyramidal stem, the stem diameter varies depending on the height, but the stem diameter of the portion connected to the head is adopted as the stem diameter. When the cross-sectional shape of the stem is a cross-shaped or X-shaped irregular cross-sectional shape, the diameter of the circumscribed circle having the smallest diameter among the circumscribed circles circumscribing the irregular cross-sectional shape is defined as the stem diameter.

The density of the hook member on the base sheet is not particularly limited, but is preferably 225 or more per cm ² , more preferably 240 or more, preferably 256 or less, and more preferably 250 or less. By using 225 or more per 1 cm ² , the engagement force is increased, and the disposable auxiliary pad can be firmly fixed to the clothes.

  The hook members are preferably aligned on the base sheet, and more preferably aligned with the major axis direction of the heads aligned. By aligning the major axis directions of the heads to be aligned, the anisotropy of the engaging force of the hook member is increased.

  Although the shape of a base material sheet is not specifically limited, A circular shape, an ellipse shape, or a rectangular shape is mentioned, A rectangular shape is more preferable. In this case, the length of the base sheet is preferably 300 mm or more, and preferably 500 mm or less. The width of the base sheet is preferably 10 mm or more, and preferably 30 mm or less. The thickness of the base sheet is preferably 50 μm or more, and preferably 150 μm or less.

  As a material which comprises a base material sheet and a hook member, thermoplastic resins, such as polyethylene, a polypropylene, polyamide, polyester, are preferable, and polyethylene or a polypropylene is preferable.

  As a method of forming a base member sheet and a fastening member having a plurality of hook members standing on the base sheet, for example, a molten resin is press-fitted onto a roller having a large number of fine holes, and the hook is placed on the base sheet. A method of integrally molding a member, or extruding molten resin through a base sheet and a die shaped so as to form a plurality of rows of ridges on the surface thereof, and forming a horizontal cut at small intervals in the row of ridges And then stretching the substrate sheet to form a number of hook members from continuous rows of ridges.

  The disposable auxiliary pad of the present invention has a front side part, a rear side part, a crotch part positioned between the front side part and the rear side part in the length direction, and in the width direction, on both sides of the central part and the central part. With both side edges located. In use, the front side portion of the disposable auxiliary pad is in contact with the wearer's stomach side and the rear side portion is in contact with the wearer's buttocks side.

  In the present invention, the fastening member is attached to the front side portion and the rear side portion of the disposable auxiliary pad, and in the lengthwise crotch portion of the disposable auxiliary pad, a region where there is no fastening member is provided, And / or a fastening member is attached to the both-sides edge part of the width direction, and it is preferable that the area | region where a fastening member does not exist is provided in the width direction center part of the said disposable auxiliary pad.

  When a disposable auxiliary pad is attached, a finger is inserted between the disposable auxiliary pad and clothing by providing an area where no fastening member is present in the lengthwise crotch part and / or the widthwise central part of the disposable auxiliary pad. be able to. As a result, attachment work and position adjustment are facilitated. Further, the disposable auxiliary pad and the clothes are not fixed at the crotch portion in the length direction and / or the central portion in the width direction. As a result, the disposable auxiliary pad is prevented from following the movement of the clothes too much, the fit of the disposable auxiliary pad to the wearer is not lowered, and urine leakage is reduced.

  The shape of the disposable auxiliary pad of the present invention is preferably a substantially rectangular shape having both long side edges and short side edges. Moreover, the hourglass shape by which the notch part for legs was provided in the long side both-sides edge so that it might be easy to follow a wearer's crotch part may be sufficient.

  The disposable auxiliary pad may be provided with a pair of upright portions extending in the length direction along both side edges of the long side. The standing portion prevents lateral leakage of urine and the like, and quickly moves the water of the excrement to the absorber. It is preferable that the standing part is composed of a liquid-impermeable side sheet. Examples of the side sheet used for the standing part include those used as a material for the liquid-impermeable back sheet. For example, the upright portions may be provided on both sides in the width direction of the upper surface of the absorber, or may be provided outside the side edge of the absorber. The upright portions may be formed by raising the inner ends of the side sheets provided on both sides of the top sheet in the width direction. It is preferable that an elastic member is provided at the free end (inward end) of the standing part, and the standing part rises toward the wearer's skin by the contraction force of the elastic member. For the elastic member, a stretchable material such as polyurethane thread or natural rubber sheet is used.

  The disposable auxiliary pad of the present invention can be suitably used for clothes such as disposable diaper bodies, sanitary napkins, and cotton fabric pants, and is preferably used for disposable diaper bodies, sanitary napkins, and the like.

  As the disposable diaper body, for example, a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body between the liquid-permeable top sheet and the liquid-impervious back sheet, A pair of rising flaps formed along both side edges of the absorbent body; a laminate composed of an inner sheet and an outer sheet, and a liquid-permeable top sheet and a liquid-impermeable back sheet on the skin surface side of the laminate And an absorbent main body in which an absorbent body is sandwiched between and a pair of rising flaps formed along both side edges of the absorbent main body. In addition, although the case where the diaper main body was equipped with the absorptive main body and the absorber was illustrated above, the absorptive main body and the absorber are not necessarily required for the diaper main body.

  Hereinafter, the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiments shown in the drawings.

  FIG. 1 shows an example of a fastening member used in the present invention. FIG. 1 is an enlarged plan view of an example of a fastening member used in the present invention, and the fastening member 10 has a plurality of hook members 45 standing on a base sheet 44. A plurality of hook members 45 are provided in parallel in the minor axis direction 18 and the major axis direction 19 of the head. FIG. 2A is a plan view of the hook member. 2B is a front view of the hook member 45 as viewed from the minor axis direction 18 of the head 47, and FIG. 2C is a side view of the hook member 45 as viewed from the major axis direction 19 of the head. The hook member 45 includes a stem (stem) 46 and a head 47 provided at the tip of the stem 46. The head 47 has a substantially elliptical shape having a short diameter 50 and a long diameter 49 larger than the diameter 53 of the stem, and has a projecting portion 48 protruding from the stem in the long diameter direction 19. In the example shown in FIG. 2C, the minor axis 50 of the head 47 and the stem diameter 53 are substantially equal, and the head does not protrude in the minor axis direction 18 of the head. The fastening member 10 having the above-described configuration is firmly engaged because the head of the hook member projects in the major axis direction 19, but loosely because the head does not project in the minor axis direction 18. Engage.

  FIG. 3 shows a modification of the hook member used in the present invention. 3A is a plan view of the hook member, FIG. 3B is a front view seen from the minor diameter direction 18, and FIG. 3C is a side view seen from the major axis direction 19. The minor axis 50 of the head is larger than the stem diameter 53, and the head projects in the minor axis direction 18. The length 51 protruding in the major axis direction 19 is larger than the length 52 projecting in the minor axis direction. By adjusting the length protruding in the major axis direction and the minor axis direction, the engagement force in the major axis direction and the minor axis direction can be adjusted respectively. The fastening member 10 having the above-described configuration has a large protruding length of the head in the major axis direction 19 and is firmly engaged, but is closely engaged in the minor axis direction 18 with a small protruding length of the head.

  FIG. 4 shows another modification of the hook member used in the present invention. 4A is a plan view of the hook member, FIG. 4B is a front view seen from the minor axis direction 18, and FIG. 4C is a side view seen from the major axis direction 19. FIG. The minor axis 50 of the head is larger than the diameter 53 of the stem, and the head projects in the minor axis direction 18. The length 51 protruding in the major axis direction 19 is larger than the length 52 projecting in the minor axis direction. In the embodiment shown in FIG. 4, the stem 46 has a conical shape, and the stem diameter 53 increases from the head toward the base sheet. The stem bottom diameter 54 is the stem diameter where the stem is joined to the base sheet, and is larger than the short axis 50 of the head. By adopting such a configuration, the stem 46 stands up stably and does not fall easily. As a result, the engagement force is stabilized.

  The overhang length 51 in the major axis direction of the hook member of the fastening member used in the present invention is preferably 30 μm or more, more preferably 50 μm or more, preferably 190 μm or less, and more preferably 175 μm or less. Further, the overhang length 52 in the minor axis direction of the hook member is preferably 25 μm or less, more preferably 15 μm or less, and most preferably the hook member does not project in the minor axis direction.

  The fastening member having the above-described configuration securely engages in the major axis direction 19 but loosely engages in the minor axis direction 18. In the present invention, such a fixing member is attached to the back surface of the back sheet such that the major axis direction 19 of the head matches the width direction of the disposable auxiliary pad. Then, when the disposable auxiliary pad is attached to the inner surface of the garment and used, the major axis direction 19 of the head and the width direction of the disposable auxiliary pad coincide with each other, so that displacement in the width direction can be suppressed. Since the head does not protrude in the length direction of the disposable auxiliary pad, the disposable auxiliary pad can be easily removed without resistance in the length direction.

  The engagement force in the major axis direction of the fastening member used in the present invention is preferably 0.25 N / 15 mm or more, more preferably 0.30 N / 15 mm or more, preferably 3.50 N / 15 mm or less, 1.50 N / 15 mm or less. Is more preferable. If the engaging force in the major axis direction of the fastening member is within the above range, the displacement in the width direction of the disposable auxiliary pad is suppressed. Further, the engagement force in the minor axis direction of the fastening member used in the present invention is preferably 0 N / 15 mm or more, more preferably 0.010 N / 15 mm or more, preferably 0.100 N / 15 mm or less, 0.0050 N / 15 mm. The following is more preferable. If the engagement force in the minor axis direction of the fastening member is within the above range, the disposable auxiliary pad can be easily removed without resistance in the length direction. The engaging force of the fastening member can be measured by a method described later.

  5 to 7 show a preferred embodiment (first embodiment 1) of the disposable auxiliary pad of the present invention. FIG. 5 is a plan view seen from the skin side, and FIG. 6 is a back view seen from the back side. 7 is a cross-sectional view taken along the line II of FIG. Hereinafter, in the present invention, the side corresponding to the left side of the wearer is referred to as the left side, and the side corresponding to the right side of the wearer is referred to as the right side. Therefore, the right side in FIG. 6 is the left side, and the left side is the right side. (In FIG. 5, the right side is the right side and the left side is the left side.)

  The disposable auxiliary pad 1 is mainly composed of a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and an absorbent body 4 disposed between both sheets. The absorbent body 4 is joined to the top sheet 2 and the back sheet 3 with a hot melt adhesive or the like, and the flap portions of the top sheet 2 and the back sheet 3 that extend outward from the absorbent body 4 are made of an adhesive or the like. Joined together, the absorbent body 4 and excreta such as urine absorbed by the absorbent body 4 are held so as not to leak outward. 5 to 7, the back sheet 3 is wound up above the absorbent body 4, and the widthwise side edge 24 of the absorbent body 4 is covered with the back sheet 3. This is a measure for holding the absorbent body 4 and excrement such as urine absorbed by the absorbent body 4 more firmly so as not to leak outward.

  The disposable auxiliary pad 1 has a length direction 118, a width direction 119, and a thickness direction 20, and the front side portion 12, the rear side portion 14, and the front side portion 12 and the rear side portion along the length direction 118. 14 has a crotch portion 13 positioned between the two. Further, side edge portions 15 and 17 and a central portion 16 are provided along the width direction 119. The flap portion of the crotch portion 13 is provided with a leg cutout portion 8 so as to be easily along the crotch portion of the wearer. Further, the crotch edge 25 of the absorbent body 4 is also bundled. In FIG. 6, two two-dot chain lines that divide the disposable auxiliary pad 1 into approximately three equal parts are drawn, the center portion 16 is between the two-dot chain lines, and the outer portions of the two-dot chain lines are the side edges 15 17 and so on.

  The disposable auxiliary pad 1 is provided with fastening members 10 and 11 on the back side of the back sheet 3. Here, the back surface side is the lower side toward FIG. 7 and is the side facing the inner surface of the wearer's clothing. The upper side toward FIG. 7 is the side facing the wearer's skin. The front fastening member 10 is disposed on each of the side edges 15 and 17 in the front side portion 12. The rear fastening member 11 is disposed in each of the side edge portions 15 and 17 in the rear side portion 14. The front and rear fastening members 10 and 11 are depicted as rectangular shapes each having an end edge 29 in the length direction and a side edge 30 in the width direction. However, the shape is not limited to this shape.

  The fastening members 10 and 11 having a hook member are attached to the back surface of the back sheet 3 so that the hook member faces the inner surface of the clothes. The disposable auxiliary pad 1 can be joined to the clothing by engaging the hook member with the inner surface of the clothing. If it is a fastening member having a hook member, it can be repeatedly attached, position adjustment is easy, and damage to the inner surface of the garment is reduced.

  The width direction side edge 30 of each fastening member is preferably arranged along the side edge 22 of the disposable auxiliary pad 1. Further, the length 26 of the side edge 30 is preferably longer than the length 31 of the end edge 29. Due to the arrangement relationship and the dimensional relationship of the fastening members, it is possible to make it difficult to cause a shift in the length direction when the disposable auxiliary pad 1 is fixed to the clothes. Since the displacement does not easily occur, the disposable auxiliary pad continues to fit in an appropriate position between the wearer's crotch, thereby preventing leakage of excrement such as urine.

  The fastening members 10 and 11 are preferably provided apart from the side edge 22 in the width direction of the disposable auxiliary pad, and the outer side edge 30 of the fastening member is separated from the side edge 22 of the disposable auxiliary pad. It is preferable to be located inward by 10 mm or more. By disposing the fastening member away from the side edge 22 in the width direction of the disposable auxiliary pad, the disposable auxiliary pad 1 is arranged at the interval 27 from the side edge 22 in the disposable auxiliary pad 1 to the fastening members 10 and 11. , Will be free without being joined to clothes. The operator can also pinch the gap 27 with his / her finger and can be used for position adjustment. Moreover, since the part of this space | interval 27 does not follow the movement of clothes, it does not bend or bend | fold according to the relationship with clothes, and it can prevent the leakage of excrement resulting from those bends / folds.

  The dimension of the distance 27 in the width direction 19 is preferably 10 mm or more, more preferably 15 mm or more, preferably 30 mm or less, and more preferably 25 mm or less. If the size exceeds 30 mm, there is too much freedom, and the auxiliary pad alone can be easily bent. Also, if the dimension is less than 10 mm, it is difficult for the operator to grip and difficult to work.

  The front side fastening member 10 and the rear side fastening member 11 are each provided with a gap 28 between the left and right fastening members. Since there is this space, it is possible to work by putting a hand between the right and left fastening members, and it is easy to adjust the position when attaching to the clothes. By fitting the disposable auxiliary pad at an appropriate position according to the wearer's body shape and posture, it can be surely fitted, and as a result, leakage can be reduced.

  The distance between the left and right fastening members is preferably 50 mm to 90 mm. When the interval is smaller than 50 mm, it is difficult for the wearer's hands and fingers to enter. Further, when the interval is larger than 90 mm, the fastening of the disposable auxiliary pad becomes unstable.

  Referring to FIGS. 5 and 7, the width of the top sheet 2 is set to be narrower than the width of the disposable auxiliary pad 1, and the lower surfaces of both side edges of the top sheet 2 are slightly outside the folded end 9 of the back sheet 3. The upper surface and the first joint 32 are joined. A side sheet 5 is joined and disposed outside the top sheet 2 in the width direction. The lower surface of the portion slightly outside of the first folded edge 36 of the side sheet 5 is bonded to the upper surface of the top sheet 2 by the second bonding portion 33. The other lower surface of the side sheet 5 is also joined to the upper surface of the top sheet 2 and the upper surface of the folded back sheet 3 (not shown). The portion of the side sheet 5 that is inward of the second joint portion 33 is an upright portion 6 that stands up toward the wearer's skin by the contraction force of the elastic member 7 attached in an extended state.

  In the example of FIGS. 5 and 7, the upright portion 6 is folded outward at the first folded edge 36, then folded inward at the second folded edge 34, and then the third folded edge. The edge 35 is folded back inward so as to cover the elastic member 7. The elastic member 7 is attached in an extended state inside the third folded edge 35. The folded upright part 6 is fixed in a folded state in the vicinity of the edge in the length direction 118 of the disposable auxiliary pad 1. Since the standing part 6 between the fixed parts is not fixed, it stands up toward the wearer's skin by the contraction force of the elastic member 7. Since the standing part 6 stands mainly in the crotch part of the wearer, it is possible to prevent side leakage of excrement such as urine in the crotch part.

  For the elastic member 7, a stretchable material such as polyurethane thread or natural rubber sheet is used. For joining the materials, joining with a hot melt adhesive or hot melt joining is used.

  8 to 10 show another preferred embodiment of the present invention (second embodiment 101). In the disposable auxiliary pad 101, the back sheet 3 is not wound up along the side edge 24 in the width direction of the absorbent body 4, and extends outward from the side edge 24. The side sheet 5 also extends outward from the side edge 24, and the extended side sheet 5 and the back sheet 3 are joined together to form a flap portion. Except for the above points, the second embodiment is basically the same as the first embodiment.

  It is preferable that the outer side edge 30 of the fastening member is located at least 10 mm inward from the widthwise side edge 24 of the absorber. 5 to 7, the side edge 24 of the absorber 4 and the side edge 22 of the auxiliary pad 1 substantially coincide with each other. However, in the auxiliary pad 101 of FIGS. The edge 24 is inward of the side edge 22 of the disposable auxiliary pad 101. The distance 43 between the side edge 30 of the fastening member and the side edge 24 of the absorber 4 is preferably 10 mm or more, more preferably 15 mm or more, and preferably 30 mm or less. If the size exceeds 30 mm, there is too much freedom, and the auxiliary pad alone tends to bend. Also, if the dimension is less than 10 mm, it is difficult for the operator to grip and difficult to work.

  In both the first embodiment and the second embodiment, the side seat 5 is used and the upright portion 6 for preventing side leakage is provided. As a modification, the entire surface may be covered only with the top sheet 2 without using the side sheet 5. Other modifications may be made within the scope permitted by the gist of the present invention.

  FIG. 11 shows another preferred embodiment (third embodiment 201) of the disposable auxiliary pad of the present invention. FIG. 11 is a back view of the disposable auxiliary pad as seen from the back side. In the disposable auxiliary pad 201, the attachment position of the fastening member is changed. Except for the change, the second embodiment is basically the same as the first embodiment. The fastening member is attached to the front side portion 12 and the rear side portion 14 of the central portion 16 in the width direction, and a region in which the fastening member does not exist is provided in the lengthwise crotch portion of the disposable auxiliary pad. Even in the case of the disposable auxiliary pad 201, the effects of the present invention can be achieved, and the manufacturing cost can be reduced because the number of fastening members is small.

  Hereinafter, the aspect which attaches and uses the disposable auxiliary pad of this invention to a diaper main body is demonstrated still in detail, referring FIGS. As shown in FIG. 12, the disposable auxiliary pad 1 is folded in two by a two-fold portion 37. In the state folded in two, as shown in FIG. 13, it overlaps and joins to the inner surfaces 41 and 42 of a diaper main body.

  In FIG. 14, the front fastening member 10 is joined to the inner surface 41 in a state where the disposable auxiliary pad 1 is superimposed on the inner surface 41 (the portion indicated by the oblique lines) on the front side of the diaper main body 38. Since the space between the left and right front fastening members 10 is not fixed, the finger 40 of the operator's hand 39 enters between the back surface of the auxiliary pad and the inner surface of the diaper main body as shown in FIG. Thereby, even if it is once joined, the joined state can be adjusted by firmly holding the disposable auxiliary pad. Further, no fastening member is disposed on the crotch portion 13. Therefore, the crotch portion 13 is not related to the movement of the diaper main body 38, and twists, wrinkles and the like due to the movement of the diaper main body 38 do not occur. In particular, if the absorbent body 4 of the crotch part 13 is twisted or wrinkled, it is easy to cause a decrease in absorbability.

  As shown in FIG. 14, the fastening member is provided away from the width direction side edge 22 of the disposable auxiliary pad. In the interval 27 from the width direction side edge 22 of the disposable auxiliary pad 1 to the fastening member 10, the disposable auxiliary pad 1 is not joined to the diaper main body and is in a free state. The operator can also pinch the gap 27 with his / her finger and can be used for position adjustment. Moreover, since the part of this space | interval 27 does not follow the motion of the diaper main body 38, it does not bend or bend | fold according to a relationship with a diaper main body, and prevents the leakage of excrement resulting from those bending | flexion / folding. it can.

  Hereinafter, the present invention will be described in detail by way of examples. However, the present invention is not limited to the following examples, and all modifications and embodiments without departing from the gist of the present invention are not limited thereto. Included in range.

[Evaluation of engagement force of fastening member]
(1) As shown in FIGS. 15A and 15B, a hook tape having a width of 15 mm was attached as the fastening member 10 to the back surface side of the back sheet of the disposable auxiliary pad 1. The back sheets were cut into rectangles A and B each having a width of 50 mm and a length of 120 mm so as to include the attached hook tape portion, and hook tape substrates A and B were produced. In FIG. 15, the length direction 118 of the disposable auxiliary pad 1 corresponds to the MD direction (the flow direction of the nonwoven fabric in the manufacturing process), and the direction orthogonal to the MD direction corresponds to the width direction 119 of the disposable auxiliary pad 1.

  (2) As shown in FIGS. 16 (a) and 16 (b), a top sheet 58 made of an air-through nonwoven fabric is cut out from the absorbent main body 57 of the diaper body into a rectangular shape a and b, and the top sheet base materials a and b are cut. Was made. The top sheet base materials a and b were attached to a stainless steel plate having a width of 53 mm and a length of 100 mm. In FIG. 16, the length direction 118 of the absorbent main body 57 of the diaper main body coincides with the MD direction (the flow direction of the nonwoven fabric in the manufacturing process), and the direction perpendicular to the MD direction is the width direction 119 of the absorbent main body 57. Equivalent to.

  (3) The top sheet base materials a and b and the hook tape base materials A and B are overlapped so that the hook tape engages with the top sheet base material, and a 2 kg roller is reciprocated from the top to top sheet The base material and the hook tape base material were engaged to prepare test pieces 1 to 8 for a peel test. Test pieces for the peel test were prepared by laminating top sheet base materials a and b and hook tape base materials A and B in four combinations as shown in FIGS. In FIG. 17, the X direction is the peel direction of the T-type peel test. Moreover, the arrow direction attached | subjected to each base material shows the MD direction of each base material.

(4) As shown in FIG. 18, a 500-g load 204 is applied to the obtained test piece 202 for a peel test, and a T-type peel test is performed by fixing with a jig so as to peel in a 135 ° direction. It was.
The peel test was performed using an A & D Tensilon universal testing machine under conditions of a distance between chucks of 100 mm and a chuck speed of 300 mm / min.

  (5) The obtained test results were processed using “General-purpose testing machine data processing system MSAT0003RTF / RTG-1210”, and the engagement force (N / 15 mm) was calculated by the area method defined in JIS K6854. That is, the engagement force (N / 15 mm) is calculated by dividing the area surrounded by the peel load curve and the peel length on the chart paper obtained by measurement by the peel length (mm). In addition, about the test piece using the hook tape base material B, although the engaging force of N / 50mm was measured, this was converted into N / 15mm and the engaging force was computed. The obtained results are shown in Table 1. The peel test result of the test piece using the hook tape base material A indicates the engagement force for removing the disposable auxiliary pad in the width direction of the disposable auxiliary pad, and the peel test result of the test piece using the hook tape base material B is The engagement force for removing the disposable auxiliary pad is indicated in the length direction of the disposable auxiliary pad.

  (6) As the fastening member, the hook tape 1 (Example) and the hook tape 2 (Comparative Example) shown in Table 1 were used. The hook member of the hook tape 1 has a stem and a head provided at the tip of the stem, and the shape of the head has a short diameter and a long diameter larger than the diameter of the stem in plan view. The major axis direction of the head coincides with the length direction of the hook tape. The hook member of the hook tape 2 has a stem and a head provided at the tip of the stem, and the head shape projects substantially uniformly from the stem in the major axis direction and the minor axis direction.

  The hook tape bases A and B, in which the hook tape 1 having the major axis direction of the head of the hook member coincided with the length direction of the hook tape, is attached to the back sheet of the disposable auxiliary pad 1, are both fastening members. This is a case where the head is attached so that the major axis direction of the head coincides with the width direction of the disposable auxiliary pad. The peel test results of the test pieces 1 and 2 indicate the engagement force when the disposable auxiliary pad is removed in the width direction, and the peel test results of the test pieces 3 and 4 are removed in the length direction of the disposable auxiliary pad. The engagement force is indexed. From the test results of the test pieces 1 to 4, it can be seen that the disposable auxiliary pad to which the hook tape 1 is attached has a large engaging force in the width direction and a weak engaging force in the length direction. Moreover, when the result of the test pieces 1 and 2 and the result of the test pieces 3 and 4 are compared, it turns out that this tendency is recognized irrespective of the directionality of the top sheet of a disposable pants main body. From the above results, the disposable auxiliary pad to which the hook tape 1 is attached is not easily displaced in the width direction and can be easily removed in the length direction.

  Further, from the results of the test pieces 4 to 7, in the case of the disposable auxiliary pad in which the hook tape 2 having a short protrusion length from the head stem of the hook member is attached to the back sheet, the engagement force in the width direction and the length direction There was no significant difference in engagement force.

  The disposable auxiliary pad of the present invention can be suitably used for clothes such as disposable diapers, sanitary napkins and cotton fabric pants.

1: Disposable auxiliary pad, 2: Top sheet, 3: Back sheet, 4: Absorber, 5: Side sheet, 6: Standing part, 7: Elastic member, 8: Notch for leg, 9: Back sheet folding edge Part: 10: front side fastening member, 11: rear side fastening member, 12: front side part, 13: crotch part, 14: rear side part, 15: side edge part, 16: center part, 17: side edge part, 18: minor axis direction of head, 19: major axis direction of head, 20: thickness direction, 21: edge in length direction, 22: side edge in width direction, 23: edge in length direction of absorber, 24: absorption Body width direction side edge, 25: Absorber crotch edge, 26: Length of fastening member, 27: Spacing between side edge of fastening member and side edge of disposable auxiliary pad, 28: Left and right fastening Spacing between members, 29: lengthwise edge of the fastening member, 30: widthwise side edge of the fastening member, 31: width of the fastening member, 32: first contact Part: 33: second joint part: 34: second folding edge; 35: third folding edge; 36: first folding edge; 37: two-folded part; 38: diaper main body; 40: worker's finger, 41: inner surface on the front side of the outer diaper body, 42: inner surface on the rear side of the outer diaper body, 43: distance between the side edge of the fastening member and the side edge of the absorber, 44: Substrate sheet, 45: hook member, 46: stem (stem), 47: head, 48: overhanging part, 49: major axis of the head, 50: minor axis of the head, 51: overhanging length in the major axis direction of the head, 52: Overhang length of head in short axis direction, 53: stem diameter, 54: bottom diameter of stem, 57: absorbent main body, 58: top sheet made of nonwoven fabric, 59: side sheet made of nonwoven fabric, 118: length direction, 119: width Direction, 202: T-type peel test piece, 204: Load

Claims (6)

A liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body disposed between the top sheet and the back sheet, on the back side of the back sheet, on the inner surface of the clothing A disposable auxiliary pad provided with a fastening member that is detachably fastened,
The fastening member has a base sheet and a plurality of hook members standing on the base sheet,
The hook member has a stem and a head provided at the tip of the stem,
The head has a shape having a short diameter and a long diameter larger than the diameter of the stem in plan view, and the fixing member is attached so that the long diameter direction of the head coincides with the width direction of the disposable auxiliary pad. Disposable auxiliary pad characterized by being made.   The disposable auxiliary pad according to claim 1, wherein a short diameter of the head is equal to or shorter than a diameter of the stem.   The disposable auxiliary pad according to claim 1, wherein a minor axis of the head is larger than a diameter of the stem.   The disposable auxiliary pad according to any one of claims 1 to 3, wherein the shape of the head is substantially rectangular or substantially elliptical in plan view.   The disposable auxiliary pad has a front side portion, a rear side portion, a crotch portion positioned between the front side portion and the rear side portion in the length direction, and the fastening member is attached to the front side portion and the rear side portion. The disposable auxiliary pad according to any one of claims 1 to 4, wherein a region where no fastening member is present is provided in a lengthwise crotch portion of the disposable auxiliary pad.   The disposable auxiliary pad has, in the width direction, a center portion and both side edge portions located on both sides of the center portion, and the fastening member is provided on both side edge portions in the width direction. The disposable auxiliary pad according to any one of claims 1 to 5, wherein a region where no fastening member is present is provided in a central portion in the width direction.

Images