JP4312084B2 - Disposable pants-type diapers - Google Patents

Description

  The present invention relates to a disposable pants-type diaper and a method for producing the same, and can be used not only for infants but also for adults.

  Disposable diapers are broadly divided into flat diaper developed bodies, unfolded diapers that are worn by binding the left and right wings of the back to the front abdomen during use, and pants-type diapers in the shape of pants. The pants-type diaper can be easily worn in a standing position, so it can be easily worn off by moving children, and it can be worn as an underwear sensation for adult wearers, and there is relatively little resistance. Also has the advantage of being desirable. Recently, there is also a demand for pants-type diapers that have been provided with stretchability not only around the waist and legs but also around the torso to improve the fit to the body.

  By the way, if you take off the pants-type diaper that is soiled with excrement as if you take it down like normal pants, there is a risk of getting dirty around it, so the side line part can be peeled off, and this side line part is peeled off Pants-type diapers that are intended to be removed from the body are mainly provided, but once removed, they cannot be re-weared.

Therefore, in Patent Document 1, the front abdomen is broken in the central vertical direction so that it can be opened to the left and right, and each of the left and right members is attached to the extending part extending from the crotch of the back by a hook-and-loop fastener. A pant-type diaper configured to be detachable has been proposed. According to the pant-type diaper, the front abdomen can be easily removed by opening it left and right, and can be worn again by engaging a hook-and-loop fastener.
Japanese Patent Laid-Open No. 2003-526406 (FIGS. 1, 2, and 7)

  The underpants type diaper of the above-mentioned patent document 1 is to perform opening / closing operation by grasping the respective end portions of the left / right members of the front abdomen. At this time, the end portions of the left / right members are soft and have no stiffness. There is a problem that opening and closing operations are difficult.

  Accordingly, an object of the present invention is to provide a disposable pant-type diaper that has improved operability when opening and closing the front abdomen left / right member.

  The disposable pants-type diaper according to the present invention includes a front abdomen, a back part, and an extending part extending from the crotch of the back part, and the front abdomen and the back part are connected by a side line part. A diaper, wherein the extension part has a length extending from the crotch to the front abdomen, the front abdomen is separable to the left and right, and the separation part is made of an attachment member harder than the front abdomen Is attached.

  In this way, a knob unit which is a separate member from the front abdomen is attached to the separation part of the front abdomen, and since this knob unit is slightly harder than the front abdomen, the wearer or the assistant is the knob unit. Therefore, it is easy to open / close the left / right member of the front abdomen.

  As the knob unit, a pair of knob members each having a corresponding detachable member is preferable. One of the pair of knob members is attached to the left member of the front abdomen, and the other is the right member of the front abdomen. By attaching and detaching the corresponding attachment / detachment member, the left / right member of the front abdomen can be opened and closed any number of times.

  Examples of the corresponding detachable member include a hook-and-loop fastener, a combination of an adhesive tape and a target member to which the adhesive tape can be detachably attached, a button, a string, and the like. Among these, the combination of the hook-and-loop fastener and the adhesive tape and the target member is not bulky because it is in a sheet form, and the attachment / detachment position of each other can be changed, so that it can be attached to the waist width desired by the wearer.

  Further, the knob unit is preferably provided with a protruding portion. If there is a protruding portion, it can be used as a handle for gripping the knob unit, and it becomes easier to hold the knob unit, making it easier to open and close the front abdomen.

  As for the attachment position of the knob unit to the front abdomen, if the knob unit is attached to the outer surface side of the front abdomen, especially when the caregiver opens and closes the front abdomen, the operation is viewed from the front side. It can be done and the workability is good. Furthermore, the outer side surface of the extension part may be detachably attached to the skin side surface of the front abdomen, and in this case, the procedure for closing the front abdomen after applying the extension part to the wearer's abdomen when wearing In other words, since the front abdomen closing operation for fitting the pants-type diaper to the body is performed in the second half of wearing, it is easy for a caregiver or the like to perform the opening / closing operation. In addition, a hook-and-loop fastener etc. are mentioned as an attachment / detachment member interposed between the skin side surface of a front abdominal part, and the outer surface side of the extension part.

  Conversely, if the knob unit is attached to the skin side of the front abdomen, the knob unit is hidden when viewed from the outside, so that it can have a clean pants-like appearance, especially for diaper wear. The psychological burden can be reduced for a wearer having a repelling feeling, which is preferable. Further, the outer surface of the extension part is detachably attached to the skin side surface of the knob unit so that the extension part is hidden on the skin side, and the pants-like appearance is further enhanced. preferable. In addition, a hook-and-loop fastener etc. are mentioned as an attachment / detachment member interposed between the skin side surface of the knob | pick unit and the outer surface side of the extension part.

  In addition, when the knob unit is attached to the outer surface side of the front abdomen, the skin side surface of the front abdomen and the outer surface of the extension part are attached, and the knob unit is attached to the skin surface side of the front abdomen. If the skin side of the knob unit and the outer surface of the extension part are detachably bonded, the front abdomen and extension part, or the knob unit and extension part can be easily Therefore, the operability when the pant-type diaper is lowered or raised like normal pants is good. The peelable bonding method includes (1) a heat bonding method using a thermoplastic resin as a constituent material of the extension part, the front abdomen, and the knob unit, and (2) a bonding with a hot melt adhesive. A technique, (3) a joining technique using ultrasonic waves, and (4) a combination thereof.

  As described above, the engagement by the surface fastener provided between the skin side surface of the front abdomen and the outer surface side of the extension part, or between the skin side surface of the knob unit and the outer surface side of the extension part, and the peelable adhesion May be used together, or they may be attached only by the peelable adhesive without providing the surface fastener. In the case of only peelable adhesive, it cannot be re-joined once it has been removed, so it is worn as if the extension part is pressed by the front abdomen.

  Further, in the present invention, the front abdomen may be separated into left and right in advance, or the front abdomen may be separated into left and right in advance, or the center longitudinal direction of the front abdomen is configured to be ruptured. The front abdomen may be separated into left and right by breaking a possible portion. In the latter case, before breaking the breakable portion, the front abdomen is continuous because it is continuous from side to side, and the raising and lowering operation of the pants-type diaper is very easy. Further, since the breakable portion is in the central vertical direction, it is easy to perform the breaking operation and the opening / closing operation of the left / right member of the front abdomen.

  As the breakable portion, a plurality of dotted or short linear cuts arranged in a straight line in the longitudinal direction of the front abdomen (perforated cut line), or a thermoplastic resin as a constituent material of the front abdomen And those obtained by melting and weakening them. The melt weakened portion may be provided so as to penetrate the front abdomen vertically in a line or may be provided intermittently in a perforated shape. Examples of a method for forming these breakable portions include a method of cutting with a rotary cutter, a method of weakening or cutting by melting, a method of weakening or cutting by melting with ultrasonic waves, and the like.

  Next, the manufacturing method of the said disposable pants-type diaper and the manufacturing method of the knob unit used for this are demonstrated.

  A method for manufacturing a disposable pants-type diaper knob unit according to the present invention is a method for manufacturing a knob unit attached to a disposable pants-type diaper and configured by a pair of knob members, both raw materials in the pair of knob members A pair of attachment / detachment members are respectively attached to the sheet, then the pair of attachment / detachment members are overlapped to integrate the raw material sheets, and then cut into individual knob units.

  In this way, since a pair of attachment / detachment members are first attached and integrated to both raw material sheets and then cut into individual knob units, the pair of knob members is integrated after being cut. Therefore, the size of the knob member can be easily adjusted, and the knob unit can be easily manufactured. Also, since no special device is required for size adjustment, the manufacturing equipment can be made compact.

  A method for producing a disposable pants-type diaper according to the present invention is a method for continuously producing a disposable pant-type diaper in which a breakable portion is formed in the front abdomen, and the raw material length of the front abdomen in the pant-type diaper In the scale body, a breakable portion is formed in a direction crossing the production flow direction, and subsequently, a knob unit is attached on the breakable portion.

  According to this method, since the knob unit is immediately superimposed on the breakable portion, the breakable portion is reinforced by the knob unit, and it is possible to prevent the breakable portion from being broken during the manufacturing. Unlike the case where the breakable portion is formed with respect to the long body of the front abdomen in the state where the knob unit is stacked as described later, various formation methods are used as the formation method of the breakable portion. For example, cutting by a rotary cutter or a laser cutter, weakening by heating and melting, and the like can be mentioned.

  Or the manufacturing method of the disposable pants type diaper which concerns on this invention is a method of manufacturing continuously the disposable pants type diaper in which the breakable part was formed in the front abdomen, Comprising: The raw material of the said front abdomen in this pants type diaper A knob unit is mounted on the long body, and then a breakable portion is formed in the direction intersecting the manufacturing flow direction with respect to the raw material long body at the position where the knob unit is mounted. .

  In this method, since the knob unit is previously stacked before the breakable portion is formed, the breakable portion is reinforced and prevented from being broken, and the breakable portion is targeted at the position of the knob unit. Therefore, it is easy to position the breakable portion, and it can be formed beautifully. In this case, it is necessary to form a breakable portion only for the front abdomen raw material long body in the state where the knob unit is overlapped, that is, it is necessary not to form a breakable portion in the knob unit. However, according to the formation of the breakable portion using the laser beam, the laser beam irradiation depth can be appropriately set, so that the breakable portion can be formed without damaging the knob unit.

  Further, after forming the breakable portion and attaching the knob unit as described above, if the extension part is overlapped at the overlapping position of the knob unit and the raw material long body, the extension part can be easily positioned. It is. Note that the side where the extension portions are stacked may be either the knob unit side or the raw material long body side.

  According to the disposable pants-type diaper according to the present invention, it is easy to have a separation portion where the picking unit exists in the front abdomen, and thus the operability when opening / closing the left / right member of the front abdomen is good.

  In addition, according to the manufacturing method of the disposable pants type diaper knob unit according to the present invention, the knob unit can be easily manufactured, and the manufacturing equipment can be made compact.

  Furthermore, according to the manufacturing method of the disposable pants-type diaper according to the present invention, the pants-type diaper provided with a knob unit and formed with a breakable portion in the front abdomen, the breakable portion is preferably broken during the production. It can prevent and manufacture.

<Embodiment 1>
FIG. 1 is a front view showing a disposable pant-type diaper 10 according to Embodiment 1 of the present invention, and FIG. 2 is a diagram for explaining a procedure for removing the pant-type diaper 10. 3A is a front view of the central portion of the front abdomen 51 in the pant-type diaper 10, FIG. 3B is a cross-sectional view taken along line B-B shown in FIG. 3A, and FIG. It is sectional drawing showing a mode. 4 is a cross-sectional view taken along the line AA shown in FIG. 1 and showing only the front body side while omitting the back body side.

  The disposable pants-type diaper 10 includes a front abdomen 51, a back part 52 joined and joined at both side line parts 14 of the front abdomen 51, and an extending part 53 continuous in the crotch direction of the back part 52. The extending portion 53 has a length from the portion overlapping the back portion 52 to the front abdomen 51 through the crotch, and the left and right leg openings 43 are formed by overlapping the free end side of the extending portion 53 with the front abdomen 51. It is formed. A waist opening 42 is formed by the upper edges of the front abdomen 51 and the back part 52.

  The front abdomen 51 and the back part 52 are formed between a non-woven fabric interior sheet 27 made of thermoplastic resin fibers and a non-woven fabric exterior sheet 26 made of thermoplastic resin fibers. The body elastic member 36) is sandwiched therebetween. Since the interior sheet 27 and the exterior sheet 26 are both flexible and the elastic members 35 and 36 are fixed in an expanded state in the waistline direction, the pant-type diaper 10 is worn by the wearer's waist due to the contraction of the waist elastic member 35. The body fits well, and the body elastic member 36 contracts, so that it fits well around the waist, and the feeling of use becomes comfortable. In addition, the leg elastic member 37 is disposed in an extended state on the leg retraction portion of the back portion 52, and functions together with the crotch elastic member 47 disposed in an extended state on the extending portion 53 described later, It is designed to fit the leg rack. In this way, the pants-type diaper 10 is fitted to the body by the elastic members 35, 36, 37, and 47, thereby preventing leakage of urine and the like.

  In the longitudinal direction of the central portion of the front abdomen 51, a plurality of cuts are lined up in the form of perforations (cut line 28 (breakable portion)). 39 and 38 (the left member 39 is referred to as the left member 39 and the right member is referred to as the right member 38). In the illustrated example (FIGS. 3B, 3C, and 4), the cut line 28 is already cut.

The first knob member 11 is connected to the outer surface (front side surface) of the front member 51 near the separation end 38a of the right member 38, and the outer surface (front surface) of the front member 51 near the separation end 39a of the left member 39 of the front member 51. ) Is connected to the second knob member 12. Note that 29 _L and 29 _R in FIGS. 3B, 3C, and 4 are adhesives for these connections.

  In the worn state, the first and second knob members 11 and 12 are partially overlapped on the free end side (the side opposite to the attachment position to the left / right members 39 and 38) (overlapping portion 11a, 12a), a hook-and-loop engagement member 21 of a hook-and-loop fastener is provided on the skin side surface (back side surface) of the overlapping portion 11a of the first knob member 11, and the outer surface of the overlapping portion 12a of the second knob member 12 A loop-type engaging member 22 of a hook-and-loop fastener is provided on the (front side), and the left / right members 39 and 38 can be repeatedly opened and closed by engaging and disengaging the corresponding hook-and-loop fasteners 21 and 22. ing.

  The first and second knob members 11 and 12 are harder than the constituent material of the front abdomen 51. Therefore, the first and second knob members 11 and 12 are easy to grasp, and the left / right members of the front abdomen 51 39 and 38 are easy to handle. Further, a protruding portion 13 is formed on the free end side of the first picking member 11, and the hook-shaped engagement member 21 is not provided on the skin surface side of the protruding portion 13. Is easy.

  Further, the elastic members 35, 36 located in the vicinity of the separation ends 39a, 38a of the left / right members 39, 38 are finely cut, and the influence of the contraction of the elastic members 35, 36 is affected by the first and second knob members 11, It has become less than 12. If the first and second knob members 11 and 12 are contracted by the elastic members 35 and 36, the hook-shaped engagement member 21 of the first knob member 11 and the loop-type engagement of the second knob member are wrinkled. There is a possibility that it becomes difficult to engage the member 22. In addition, since the elastic members 35 and 36 are finely cut, the elastic members 35 and 36 that largely straddle the cut line 28 (parts that can be broken) do not exist. When the front abdomen 51 is broken, the elastic members 35 and 36 do not prevent this breakage.

  The pair of first and second knob members 11 and 12 constitute a knob unit 41.

  Also, hook-shaped engagement members (one member of the hook-and-loop fastener) 18 are attached to the skin side surfaces of the left / right members 39 and 38 of the front abdomen 51, respectively, and an outer side surface (front side surface) of an extension portion 53 described later. ) Is freely disengageable (FIGS. 2 and 4).

  As shown in FIG. 2C, a part of the extending portion 53 is overlapped and adhered to the back portion 52, and then extends from the crotch of the back portion 52. In the illustrated example, the lower end 52a of the rear portion 52 reaches the center of the extending portion 53. However, the rear portion 52 is longer in the direction of the lower end 52a than the illustrated example so that the extending portion 53 is largely covered. Or it may be shortened.

  As shown in FIG. 4, the extension 53 has a structure in which a liquid-permeable top sheet 24 is disposed on the skin side and a liquid-impermeable back sheet 31 is disposed on the front side, and is absorbed between the sheets 24 and 31. It has a structure sandwiching a conductive core (absorber) 23. In addition, the absorptive core 23 is arrange | positioned ranging over the front abdominal part 51 through the crotch part from the back part 52 (refer FIG. 2).

  Further, a side sheet 25 extending in the longitudinal direction is attached to both side edge portions of the extending portion 53, and a thread-like three-dimensional elastic member 30 is sandwiched near the center edge of the side sheet 25, and this elastic force causes the side sheet The sheet 25 stands up toward the wearer's skin (toward the top sheet 24). The side sheet 25 is bonded to the top sheet 24 at the side edge position (sheet upright fixing end 33) of the absorbent core 23, and is further bonded to the vicinity of the outer edge of the back sheet 31 on the outer side. An elastic member 47 for inseam is attached so as to be sandwiched between 31. The crotch elastic member 47 may be configured to be sandwiched between the top sheet 24 and the side sheet 25 or between the top sheet 24 and the back sheet 31.

  The outer side surface (front side surface) of the back sheet 31 is covered with a non-woven fabric 32 for back having a fine loop, and is engaged with and disengaged from the hooked engagement member 18 of the left / right members 39 and 38 (front abdomen 51). It is free. Instead of the back non-woven fabric 32, a small loop-type engaging member may be disposed at the engagement position of the back sheet 31 with the hook-shaped engaging member 18.

  As each material of the disposable pants-type diaper 10 of Embodiment 1, the material used for a general disposable pants-type diaper can be used, for example, the following materials are mentioned.

As the exterior sheet 26, a spunbond nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric (a nonwoven fabric obtained by disposing a spunbond layer on both sides of the melt blow layer and heat embossing the whole), and the like have air permeability and water repellency. In addition to certain non-woven materials, there are woven and knitted materials. Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² .

The non-woven fabric 32 for back is breathable and water-repellent, such as spunbond nonwoven fabric, meltblown nonwoven fabric, SMS nonwoven fabric (nonwoven fabric obtained by placing a spunbond layer on both sides of the meltblown layer and heat embossing the whole). In addition to the non-woven material, there are woven and knitted materials. Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 45 g / m ² . It is preferable to use a spunbonded nonwoven fabric having crimped fibers or a bulky air-through nonwoven fabric because it is easy to engage with the scissors-type engaging member 18 on the side surface of the front abdomen 51.

Examples of the interior sheet 27 include breathable nonwoven materials such as spunbond nonwoven fabrics, melt blown nonwoven fabrics, and SMS nonwoven fabrics, and spunbond nonwoven fabrics having crimped fibers are particularly suitable. Preferably 10~35g / m ² as a weight per unit area. Examples of the material include polypropylene, polyethylene, polyester, and polyamide. Alternatively, it may be hydrophilized (a surfactant is applied, or hydrophilic fibers (rayon, cotton, etc.) are mixed slightly). By making it hydrophilic, it is possible to expect an effect that the touch when it comes into contact with the skin becomes better or sweats.

The top sheet 24 is preferably a liquid-permeable non-woven material, for example, a non-woven material using hydrophilic fibers (cellulose, rayon, cotton, etc.) or the surface of hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, etc.). Nonwoven materials that have been made liquid-permeable by treatment with a surfactant can be mentioned. Preferably, the nonwoven fabric material (point bond nonwoven fabric, air through nonwoven fabric) which made the surface of the hydrophobic fiber of 10-35 g / m < ² > of surface weight the surface of a hydrophobic fiber with surfactant was made permeable.

Examples of the back sheet 31 include water-repellent nonwoven materials (spunbond nonwoven fabrics, melt blown nonwoven fabrics, SMS nonwoven fabrics, etc.), plastic films, and composite materials thereof. The plastic film may be breathable or non-breathable, but a more preferable embodiment is preferably a breathable plastic film. A breathable polyethylene film having a basis weight of 15 to 50 g / m ² is more preferable.

  As the absorbent core (absorbent body) 23, an absorbent core in which a granular polymer water absorbent is mixed in a hydrophilic fiber aggregate layer such as pulverized pulp fiber or cellulose fiber, or a paper sheet such as tissue paper or a liquid-permeable nonwoven fabric is used. Examples include absorbent bodies that are wrapped with a covering sheet such as a sheet and formed into a predetermined shape (rectangular shape, hourglass shape, gourd shape, etc.). In addition, in order to maintain the shape even when the wearer walks or rolls over, the shape is maintained in the hydrophilic fiber assembly or on the sheet (application of hot melt adhesive, mixing of synthetic fibers) ) May be applied. Further, a sheet-like absorbent body (for example, an air-laid absorbent body) obtained by forming the fiber or the polymer water-absorbing body into a sheet shape may be formed into a predetermined shape (rectangular shape, hourglass shape, etc.).

Examples of the material of the side sheet 25 include breathable and water-repellent nonwoven materials such as spunbond nonwoven fabric, melt blown nonwoven fabric, and SMS nonwoven fabric. Preferably, a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² is used. Can be mentioned.

  As the elastic member 36 for the body, the elastic member 35 for the waist, the elastic member 47 for the crotch, the elastic member 37 for the leg, and the elastic member 30 for the solid body, elastic elastic materials (polyurethane yarn, polyurethane film, Natural rubber, etc.) is preferably used, and it is preferably attached by a suitable attachment means such as hot melt adhesive, thermal adhesion, ultrasonic adhesion, etc. in a stretched state between various sheets (as the attachment means is rubber-based). It is more preferable to use a hot melt adhesive). The fineness of these elastic members 36, 35, 47, 37, and 30 is preferably 300 to 2000 dtex, and a polyurethane yarn having such a fineness can be stretched by 1.1 to 5.0 times and attached. Recommended.

Further, examples of the material of the first and second knob members 11 and 12 include non-woven fabrics, woven fabrics, and knitted fabrics, and synthetic resin sheets. Among these, nonwoven fabric materials obtained by the spunbond method, air-through method, point bond method, melt blow method, air laid method, or a combination of these methods are recommended. Furthermore, the nonwoven fabric having a basis weight of 30 to 100 g / m ² obtained by the spunbond method or the SMS method (a method combining the spunbond method and the melt blow method and capable of obtaining the SMS nonwoven fabric) is superior in strength. preferable. Particularly preferred are non-woven fabrics having a basis weight of 50 to 85 g / m ² manufactured by a spunbond method. Examples of the fiber material such as nonwoven fabric include synthetic fibers such as polypropylene, polyethylene, polyester, and polyamide, regenerated fibers such as rayon, and natural fibers such as pulp and silk. Among them, polypropylene fibers, polyethylene fibers, polyester fibers, etc. Synthetic fibers are preferred, and those mainly composed of polypropylene fibers or polyester fibers are preferred because of their excellent strength. Most preferred is polyester fiber.

  In addition, as a joining method of each material, methods, such as adhesion | attachment with a hot-melt-adhesive agent, ultrasonic sealing, and heat joining, are mentioned. The hot melt adhesive may be appropriately selected from rubber-based, polyolefin-based, vinyl acetate-based hot-melt adhesives, and the adhesive may be applied while the adhesive discharge nozzle is in contact with the adhesive spray nozzle or curtain spray. Examples thereof include a method of applying a mesh by a non-contact coating method such as a melt blow method using a coater or a spiral spray method, and a bead coating method of applying intermittently. About the side wire part 14, joining by thermal joining is preferable.

  Next, the usage aspect of the underpants type diaper 10 of this Embodiment 1 is demonstrated.

  When wearing the pants-type diaper 10 (before separating the front abdomen 51 to the left and right), the legs are passed through the leg opening 43 and worn up like the normal pants (FIG. 1).

  When removing the pants-type diaper 10, the loop of the hook-shaped engagement member 21 of the first knob member 11 and the loop of the second knob member 12 is first made while pinching the protruding portion 13 to beat the first knob member 11. The engagement with the mold engaging member 22 is released (see FIGS. 1, 3A, 3B, and 4). Then, it cut | disconnects along a cut (cut line 28), and divides the front part 51 into the left member 39 and the right member 38. FIG. At this time, since the first and second knob members 11 and 12 are attached to the separation end vicinity 39a and 38a of the left / right members 39 and 38, the vicinity of the cut line 28 is easy to grasp and the cutting operation is easy. It is. Next (or simultaneously with cutting), the hook-shaped engagement member 18 is disengaged from the extending portion 53 (nonwoven fabric 32 for back), and the left / right members 39, 38 are opened forward (FIG. 2 (a), (B), FIG. 3 (c)). Also in this case, since the first and second knob members 11 and 12 are provided in the vicinity of the separation ends 39a and 38a of the left / right members 39 and 38, it is easy to hold and easy to release the engagement.

  Next, the extending portion 53 is separated from the abdomen of the body and pulled out from between the crotch, and the diaper 10 is removed (FIG. 2 (c)).

  In this way, the pant-type diaper 10 can be removed by opening the front abdomen 51 to the left and right, so even if you do not completely remove the trousers you want to wear, you can remove it just by moving it slightly. Good sex.

  If the diaper 10 is not completely removed but only the internal contamination state is confirmed, the left / right members 39 and 38 may be opened forward, and the extended portion 53 may be viewed slightly away from the abdomen.

  The front abdomen 51 (left / right members 39, 38) and the extension 53 are detachable by mechanical engagement of the back nonwoven fabric 32 and the hook-shaped engagement member 18, and the first and second knob members. 11 and 12 are also detachable by mechanical engagement of the hook-type engagement member 21 and the loop-type engagement member 22, so by closing the left / right members 39 and 38 while engaging them, Can be worn again. Also in this wearing operation, the left / right members 39 and 38 are easily held by the knob unit 41 (first and second knob members 11 and 12), so that the operability is good.

  In addition, the hook engaging member 18 is shifted to a desired position and engaged with the nonwoven fabric 32 for back, or the hook engaging member 21 and the loop engaging member 22 of the first and second knob members 11 and 12 are engaged. The engagement position can also be shifted, whereby the fit of the crotch and the waistline can be changed to the wearer's preference. In addition, the saddle-shaped engaging member 18 and the back nonwoven fabric 32, and the saddle-shaped engaging member 21 and the loop-type engaging member 22 are not bulky, and thus have a clean appearance.

  Note that the left / right members 39, 38 remain connected until the cutting operation to the left / right members 39, 38 is performed, and even after the left / right members are separated, the hook-and-loop fastener (鈎) The die engagement member 21 and the loop engagement member 22) are connected to each other, and the waistline (the front abdomen 51 and the back abdomen 52) expands and contracts well by the waist elastic member 35 and the body elastic member 36. You can raise and lower the pants.

<Embodiments 2 and 3>
FIG. 5 is a cross-sectional view showing the front body side of the disposable pants-type diaper according to Embodiment 2 of the present invention, which corresponds to the cross section taken along the line AA shown in FIG.

  In the first embodiment, the outer side surface of the extending portion 53 and the skin side surface of the front abdominal portion 51 are attached by engagement of the non-woven fabric 32 for back and the hook-shaped engagement member 18. Instead of this, the diaper is releasably bonded by a hot melt adhesive 54, and the other configuration is the same as that of the first embodiment.

  The adhesion by the adhesive 54 is a bonding force that can be peeled off by the wearer or caregiver by hand, and peels off when the left / right members 39 and 38 are opened forward.

  In the second embodiment, since the front abdomen 51 and the extension 53 are firmly joined by the adhesive 54, when the pants-type diaper is shifted from the leg or removed, the operation is very firm and the operation is performed. Good sex. However, since the adhesion by the adhesive 54 cannot be re-adhered once it is peeled off, the left / right members 39 and 38 are closed after the peeling (the hook engaging member 21 of the first and second knob members, the loop type) The extending portion 53 (which engages the engaging member 22) is pressed and fastened.

  In place of the hot melt adhesive 54, a thermoplastic resin is used as a material on the outer surface side of the extending portion 53 and a material on the skin surface side of the front abdomen 51, and these are heat-bonded by heating and pressurizing them. Also good.

  Further, as the third embodiment, the bonding by the adhesive 54 as in the second embodiment and the engagement of the back nonwoven fabric 32-the hook-shaped engagement member 18 as in the first embodiment may be combined. Before the peeling of the adhesive 54 part, the front abdomen 51 and the extension part 53 are very firmly joined, and the operability is good. The front part 51 and the extension part 53 can be attached to some extent firmly by the engagement of 18.

<Embodiment 4>
FIG. 6 is a front view showing a disposable pant-type diaper 20 according to Embodiment 4 of the present invention, and FIG. 7 is a view for explaining a procedure for removing the pant-type diaper 20. 8A is a front view of the center portion of the front abdomen 61 in the pant-type diaper 20, FIG. 8B is a sectional view taken along the line DD shown in FIG. 8A, and FIG. It is sectional drawing showing a mode. FIG. 9 is a cross-sectional view taken along the line C-C shown in FIG. 6 and shows only the front body side while omitting the back body side.

  In the pants-type diaper 20 of the fourth embodiment, the first knob member 55 is connected to the skin side surface (back side surface) in the vicinity of the separation end 68a of the right member 68 of the front abdomen 61, and the left member 69 of the front abdomen 61 is separated. A second knob 56 is connected to the skin side surface (back side surface) in the end vicinity 69a. The pair of first and second knob members 55 and 56 constitute a knob unit 57.

  In the worn state, the first and second knob members 55 and 56 partially overlap on the free end side (the side opposite to the mounting position on the left / right members 69 and 68). A hook-and-loop engagement member 21 of a hook-and-loop fastener is provided on the outer side surface (front side surface) of the overlapping portion of the member 55, and a hook-and-loop fastener on the skin side surface (back side surface) of the overlapping portion of the second knob member 56. A loop type engaging member 22 is provided, and the left / right members 69 and 68 can be repeatedly opened and closed by engaging and disengaging the corresponding surface fasteners 21 and 22.

  Further, loop-type engaging members 58 and 59 of the hook-and-loop fastener are located at positions where the skin side surface of the first knob member 55 and the skin side surface of the second knob member 56 are separated from the overlapping portion with the first knob member 55. A hook-and-loop engagement member 62 of a hook-and-loop fastener (long in the circumference direction) is provided on the outer surface of the other extension 53, and the loop-type engagement members 58 and 59 and the hook-shaped engagement member 58 are provided. The engaging member 62 is detachable.

  In the same manner as in the first embodiment, a plurality of cuts are arranged in a perforated shape in the longitudinal direction of the central portion of the front abdomen 61 (cut line 28 (breakable portion)), and by cutting along this cut, The front abdomen 61 can be separated into left and right members 69 and 68 (note that the left in the worn state is referred to as the left member 69 and the right as the right member 68). In the illustrated examples (FIGS. 8B, 8C, and 9), the cut line 28 is already cut. In FIGS. 8B, 8C, and 9, the extended portion is shown for convenience. 53, the front abdomen 61 (left / right members 69 and 68) is drawn floating, and the loop type engaging members 58 and 59 and the hook type engaging member 62 are engaged with each other when worn. is there.

  Other configurations are the same as those of the first embodiment.

  Next, the usage mode of the underpants type diaper 20 of this Embodiment 4 is demonstrated.

  When wearing the pants-type diaper 20 (before separating the front abdomen 61 to the left and right), as in the case of the first embodiment, the legs are passed through the leg openings 43 and worn up like the normal pants. 6).

  In removing the pant-type diaper 20, first, the front abdomen 61 is cut along the cut line 28 and divided into a left member 69 and a right member 68. At this time, since the first and second knob members 55 and 56 are attached to the separation end vicinity 69a and 68a of the left / right members 69 and 68, the vicinity of the cut line 28 is easy to grasp, and the cutting operation is performed. easy. Subsequently, the engagement between the hook-type engagement member 21 of the first knob 55 and the loop-type engagement member 22 of the second knob 56 is released, and then (or simultaneously with the release of this engagement), the extension is extended. The engagement between the hook-shaped engagement member 62 and the loop-type engagement members 58, 59 of the protruding portion 53 is released, and the left / right members 69, 68 are opened forward (FIGS. 7A, 7B, 8). c)). Also at this time, the first and second knob members 55 and 56 can easily grasp the vicinity 69a and 68a of the left / right members 69 and 68, and can easily perform the disengagement operation.

  Next, as in the case of the first embodiment, the extending portion 53 is separated from the abdomen of the body and pulled out from between the crotch, and the diaper 20 is removed (FIG. 7C).

  In this way, the pant-type diaper 20 can be removed by opening the front abdomen 61 to the left and right, so even if the trousers to be worn on the outside are not completely removed, it can be removed with a slight shift, and by the picking unit 57 The operability at that time is good. Further, the pants-type diaper 20 of the fourth embodiment has a clean normal pants-like appearance because the knob unit 57 (first and second knob members 55, 56) is hidden on the skin side.

  Similarly to the case of the first embodiment, when only the internal contamination state is checked without completely removing the diaper 20, the left / right members 69 and 68 are opened forward, and the extending portion 53 is opened from the abdomen. It is better to look a little away.

  The front abdomen 61 (left / right members 69 and 68) and the extension 53 are formed by loop-type engagement members 58 and 59 of the first and second knob members 55 and 56 and a hook-type engagement member of the extension 53. 62 is detachable by mechanical engagement, and detachable by mechanical engagement of the hook-type engagement member 21 of the first knob 55 and the loop-type engagement member 22 of the second knob 56. Thus, it can be worn again by closing the left / right members 69, 68 while engaging them. In addition, since the first and second knob members 55 and 56 are attached to the left / right members 69 and 68 at the time of wearing, operability is good.

  In addition, the loop type engaging members 58 and 59 are engaged with the hook type engaging member 62 of the extending portion 53 while being shifted in the circumferential direction, and the hook type members of the first and second knob members 55 and 56 are engaged. By fitting the combined member 21 and the loop type engaging member 22 so as to be shifted in the waist direction, the fit of the crotch and the waist can be changed to the wearer's preference. Moreover, the saddle-type engaging members 21, 62 and the loop-type engaging members 22, 58, 59 are not bulky, and thus have a clean appearance.

  Note that the left / right members 69 and 68 are connected until the cutting operation to the left / right members 69 and 68 is performed, and the hook-and-loop fasteners (the hook-type engaging member 21 and the loop-type engaging member 22) after the cutting. The waistline (the front abdomen 61 and the back part 52) can be stretched and contracted by the waist elastic member 35 and the body elastic member 36, so that the wearer can raise and lower the normal pants. .

<Embodiment 5>
FIG. 10 is a cross-sectional view showing the front body side of the disposable pants-type diaper according to Embodiment 5 of the present invention, which corresponds to the cross section taken along the line C-C shown in FIG. 6 and shows only the front body side. FIG.

  In the fourth embodiment, the outer surface of the extending portion 53 and the skin side surface of the knob unit 57 are attached by the engagement of the hook-type engaging member 62 and the loop-type engaging members 58 and 59. Instead of this, the pants-type diaper of 5 is bonded by a hot melt adhesive 63 so as to be peeled off, and the other configuration is the same as that of the fourth embodiment.

  As in the case of the second embodiment, in the fifth embodiment, the front abdomen 61 and the extension portion 53 are firmly joined by the adhesive 63, so that the operation when shifting and taking off like normal pants is performed. Sex is very good.

  In addition, you may use together joining by the adhesive agent 63 like Embodiment 5, and joining by a pair of hook-and-loop fastener like Embodiment 4. FIG.

<Embodiment 6: Manufacturing method of a knob unit>
Next, a manufacturing method of the knob unit 41 used in the first embodiment will be described.

  FIG. 11 is a view for explaining an example of a manufacturing method of the disposable pants-type diaper knob unit according to the present invention, and this manufacturing line flows from the left to the right (in the direction of arrow E) in the figure.

  First, with respect to the raw material sheet (first raw material sheet 111) of the first knob member 11, the hook-shaped engagement member 21 is attached to a position on the skin side and slightly inside the protruding portion 13. Attached to the raw material sheet (second raw material sheet 112) of the second knob member 12 on the outer surface and in the vicinity of one sheet edge (position slightly inside the one sheet edge) The loop type engaging member 22 is attached to the surface with an adhesive (surface fastener attaching step). Next, the first and second raw material sheets 111 and 112 are overlapped so that the saddle-type engaging member 21 and the loop-type engaging member 22 are overlapped (integration step). At this time, the saddle type engaging member 21 and the loop type engaging member 22 are engaged, and the raw material sheets 111 and 112 are integrated. Next, this is cut into individual picking units 41 (arrow F) (cutting step). In this way, the picking unit 41 is completed.

  In the above manufacturing method, since the first and second raw material sheets 111 and 112 are integrated and then cut, it is easy to adjust the dimensions of the first and second knob members 11 and 12, and the manufacturing equipment is compact. Can be.

  In addition, about the manufacturing method of the picking unit 57 of Embodiment 4, 5, only the skin side surface and an outer surface in the manufacturing method of the said Embodiment 6 are opposite, and the manufacturing method does not change in general. However, in the case of the knob unit 57 in the fourth embodiment (see FIG. 9), after the hook-type engaging member 21 and the loop-type engaging member 22 are engaged and the raw material sheets 111 and 112 are integrated (integrated) Step), loop type engaging members 58 and 59 are attached to the skin side surfaces of the first and second raw material sheets 111 and 112 with an adhesive (loop engaging material attaching step), and then cut into individual knob units 57 ( Cutting step). Alternatively, the wide loop type engaging member 22 may be attached to the second raw material sheet, and this may also serve as the loop type engaging member 59. In this case, in the loop engaging material attaching step, the first raw material sheet 111 is used. The loop type engaging member 58 is attached only to the above.

<Embodiment 7: Disposable pants-type diaper manufacturing method>
Next, the manufacturing method of the disposable pants type diaper 10 of the said Embodiment 1 is demonstrated.

  FIG. 12 is a view for explaining a part of the manufacturing method of the disposable pants-type diaper according to the embodiment of the present invention, and illustrates the front body side. This production line is based on a so-called lateral flow method in which a pant-type diaper is made to flow in the left-right direction, and flows from left to right (in the direction of arrow G) in the figure.

First, a waist elastic member 35 and a body elastic member 36 are sandwiched between the interior sheet 27 and the exterior sheet 26 to form a raw material long body 151 of the front abdomen 51 (not shown). The elastic members 35 and 36 at a position near the center of the front abdominal part 51 (positions near the separation ends 38a and 39a of the left / right members) are cut into pieces (elasticity) with a plurality of sharp blades on the drum surface) Member cutting step). Next, a plurality of cuts are formed at the center of the front abdomen 51 by a rotary cutter 65 (having material blades 151 that are intermittently sharp in the width direction) (cut lines 28) (breakable points) Forming step). The cut line 28 is formed by forming cuts in a perforated manner in a direction perpendicular to the production flow direction (arrow E). Subsequently, the knob unit 41 is attached to the outer surface on the cut line 28 with adhesives 29 _L and 29 _R (see FIGS. 3B and 4) (pinch unit attaching process). When the picking unit 41 is attached, if the manufacturing flow direction E of the picking unit and the manufacturing flow direction G of the pant-type diaper are parallel, the picking unit 41 is appropriately rotated by 90 ° to make the attaching direction appropriate. (Arrow H).

  Next, the extension part 53 manufactured in another process is overlaid on the cut line 28 on the skin side surface of the front abdomen raw material elongated body 151, and the saddle type provided in advance on the skin side surface of the front abdomen raw material elongated body 151. The engagement member 18 and the nonwoven fabric 32 for back of the extension part 53 are engaged (front abdomen-extension part attachment process). At this time, the extended portion 53 is overlapped and adhered to the skin side surface of the back material elongated body manufactured in a separate process (the elastic members 35 and 36 are sandwiched between the interior sheet 26 and the exterior sheet 27). (Not shown) (back portion-extension portion attaching step).

  After that, the back material elongated body is folded back toward the front abdomen material elongated body 151, the front abdomen and the back part are heat-sealed at the side line part 14 (side connection process), and separated into individual diapers (individual Diaper cutting step), the pants-type diaper 10 is completed (not shown).

  In the seventh embodiment, since the elastic member cutting step and the breakable portion forming step are performed before the knob unit attaching step, the elastic member is broken and the cut line 28 is formed in the case of the eighth embodiment described later. However, various methods can be used as the forming method. For example, a method of cutting the front abdomen raw material elongated body 151 through the thickness direction with a cutter or the like can also be adopted.

  In addition, since the knob unit 41 is attached immediately after the formation of the cut line 28 as described above, the knob unit 41 functions as a reinforcing member for the cut line 28 and prevents the break line 28 from being broken during the manufacturing process. be able to. By performing the elastic member cutting step before the breakable portion forming step and the knob unit attaching step, the knob unit attaching step can be performed immediately after the breakable portion forming step.

<Embodiment 8: Manufacturing method of disposable pants-type diaper>
Drawing 13 is a figure for explaining a part of manufacturing method of the disposable pants type diaper concerning other embodiments of the present invention, and explains the front body side.

  In the seventh embodiment, the configuration in which the knob unit 41 is attached after the breakable portion (cut line 28) is formed is shown. However, in the eighth embodiment, the knob unit 41 is first bonded to the front abdomen raw material elongated body 151. Attaching with the agent (pick unit attaching step), and then forming a plurality of cuts at the center of the front abdomen 51 with respect to only the front abdomen raw material elongated body 151 by the laser cutter 66 (cut line 28) (breakable) Place formation step). Other configurations are the same as those of the seventh embodiment.

  In the case of this Embodiment 8, since the knob | pick unit 41 is previously attached to the elongate body 151, positioning of the cut line 28 is easy. Further, the knob unit 41 functions as a reinforcing agent, and there is almost no possibility of breaking even after the cut line 28 is formed.

  Although the present invention has been specifically described with reference to examples, the present invention is not limited by the above examples as a matter of course, and of course may be implemented with appropriate modifications within a range that can be adapted to the above purpose. All of these are possible within the scope of the present invention.

  For example, in the pants-type diaper of the above embodiment, the left / right members 39, 38 of the front abdomen 51 are connected to each other, and the wearer or the like appropriately cuts along the cut line 28 (a breakable portion) and the left member 39 and the right The product is separated into the members 38, but may be a product that has been cut into left / right members 39, 38 in advance. In this case, even when newly worn, the pants-type diaper can be worn without completely removing the outer pants and the like.

  Further, in addition to the cut line 28 as a breakable part, a thermoplastic resin is used as a constituent material of the front abdomen, and this is weakened (the thickness is reduced and weakened by strongly heating and pressing to melt and harden). It may be a simple one. This weakened part may be provided so as to penetrate the front abdomen vertically in a line or may be provided intermittently.

  Further, in the above embodiment, the waist elastic member 35 and the body elastic member 36 positioned in the vicinity of the separation ends 39a and 38a of the left / right members 39 and 38, which are overlapping portions with the first and second knob members, are finely divided. Although the separation end vicinity 39a, 38a is shown not to be shrunk by cutting, the present invention is not limited to this, and tension in a range where the elastic members 35, 36 overlap the first and second knob members. The inner / exterior sheets 27 and 28 may be sandwiched and bonded without applying (without stretching). Or it is good also as a structure which does not arrange | position the elastic members 35 and 36 in the said overlapping range.

  Moreover, although the case where the elastic members 35 and 36 are cut | disconnected with a sharp cutter (blade) was shown in the said embodiment, it is not restricted to this, For example, it presses and cuts by applying a pressure, heating with a round pressing member. You may do it.

  In the above-described embodiment, a male engaging member such as a hook engaging member and a loop engaging member or a non-woven fabric (non-woven fabric) are used for attaching / detaching a pair of knob members and attaching / detaching an extension part and a front abdomen (left / right member). Alternatively, a configuration in which a female engagement member such as a knitted fabric or a fabric is mechanically engaged with a pair is shown. However, the present invention is not limited to this, and the adhesive tape and a target on which the adhesive tape can be freely attached and detached are shown. It is good also as a structure which can be attached or detached freely with the combination with a member. Moreover, you may comprise so that a pair of knob member can be attached or detached using a button or a string. However, a hook-and-loop engagement member, a loop fastener formed of a loop-type engagement member or a non-woven fabric is preferable because it is not bulky and has a clean appearance and can be frequently engaged and disengaged.

It is a front view which shows the disposable pants type diaper which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the procedure which removes the underpants type diaper of Embodiment 1 shown in FIG. (A) is a front view of the center part of the front abdominal part in the underpants type diaper of Embodiment 1, (b) is the BB sectional view shown to (a), (c) is a cross section showing a mode that the front abdomen was opened. FIG. FIG. 2 is a cross-sectional view taken along line AA shown in FIG. 1 and showing only the front body side while omitting the back body side. It is sectional drawing showing the front body side of the disposable pants type diaper which concerns on Embodiment 2 of this invention. It is a front view which shows the disposable pants type diaper which concerns on Embodiment 4 of this invention. It is a figure for demonstrating the procedure which removes the underpants type diaper of Embodiment 4. FIG. (A) is the front view of the center part of the front abdominal part in the underpants type diaper of Embodiment 4, (b) is DD sectional view taken on the line in (a), (c) is a cross section showing a mode that the front part was opened. FIG. It is CC sectional view shown in FIG. 6, Comprising: It is sectional drawing which abbreviate | omitted the back body side and represented only the front body side. It is sectional drawing showing the front body side of the disposable underpants type diaper which concerns on Embodiment 5 of this invention. It is a figure for demonstrating an example of the manufacturing method of the disposable pants type diaper knob unit which concerns on this invention. It is a figure for demonstrating a part of manufacturing method of the disposable pants type diaper which concerns on one Embodiment of this invention, Comprising: The front body side is demonstrated. It is a figure for demonstrating a part of manufacturing method of the disposable underpants type diaper which concerns on other embodiment of this invention, Comprising: The front body side is demonstrated.

Explanation of symbols

10, 20 Disposable pants-type diapers 11, 55 First knob member 12, 56 Second knob member 18, 21, 62 Spear-type engagement member 22, 58, 59 Loop-type engagement member 28 Cut line (breakable) Point)
32 Nonwoven fabric for bag 38, 68 Right member 38a, 39a Near separation end 39, 69 Left member 41, 57 Picking unit 51 Front abdomen 52 Rear back 53 Extension part 54, 63 Hot melt adhesive

Claims (5)

Disposable pants-type diaper comprising a front abdomen, a back part, and an extending part extending from the crotch of the back part, wherein the front abdomen and the back part are connected by a side line part,
The extension part is a length from the crotch to the front abdomen,
The front abdomen is separable to the left and right, and a picking unit made of an attachment member harder than the front abdomen is attached to the skin surface side in the front abdomen,
A disposable pants-type diaper, wherein an outer side surface of the extension portion is detachably attached to a skin side surface of the knob unit. The disposable pants-type diaper according to claim 1 , wherein an outer side surface of the extension part is detachably bonded to a skin side surface of the knob unit. The knob unit is constituted by a pair of knob members having corresponding attachment / detachment members, one of the pair of knob members is attached to the left member of the front abdomen, and the other is the right of the front abdomen The disposable pants-type diaper according to claim 1 or 2 , wherein the disposable pant-type diaper is attached to a member. The disposable pants-type diaper according to any one of claims 1 to 3 , wherein the knob unit includes a protruding portion. The front abdominal are those that central longitudinal direction is configured to be broken, to any one of claims 1 to 4, in which said front abdominal are separated to the left and right by breaking the breakable portion The disposable pants-type diaper described.

Images