JP5517916B2 - Disposable diapers for pets - Google Patents

Description

  The present invention relates to a disposable diaper for pets.

  Recently, disposable diapers for pets that have been used on dogs and cats have been proposed. For example, the device disclosed in Patent Document 1 includes a dorsal side portion for covering the back and a main body portion for covering from the abdomen to the vicinity of the tail through the crotch and protruding from both sides of the main body portion. Is attached to the target tape provided on the outer surface of the back portion in a detachable manner. The body part is functionally divided into an anus below the tail and a buttock covering part for covering the vicinity below the anus, and an abdomen part for covering the abdomen in front of the buttock covering part. it can.

  Patent Document 2 also proposes a disposable diaper for pets that is substantially the same as Patent Document 1.

JP 2004-159591 A JP 2007-159420 A

  However, the movement of the pet when wearing it is not comparable to that of a human being, and the position of the diaper is easy to shift from when the diaper is applied to the body until the wearing is completed, and it is necessary to wear it at an appropriate position. It is extremely difficult, and if the pet escapes during wearing, it is necessary to put it on again from the beginning.

  Furthermore, since the fast-moving disposable diaper is easy to loosen or slip after wearing, there is a risk that excrement may leak due to slipping easily when the movement is intense as in the case of a pet.

  From the viewpoint of preventing the diaper from slipping down, a suspender as described in Patent Document 2 is also effective, but the wearing becomes more complicated.

  Therefore, a main problem of the present invention is to provide a disposable diaper for pets that is difficult to shift in the position of the diaper during and after the mounting and can be easily replaced.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A cylindrical part through which the pet's torso is passed, a main body part that covers between the cylindrical part and both rear legs and covers the vicinity of the tail, and extends from this main body part and passes through both sides of the tail. A disposable diaper for pets, comprising: a connecting portion detachably connected to an outer surface of the portion.

(Function and effect)
In the present invention, after passing the tubular part through the rear leg of the pet to the trunk, the connecting part extending from the main body part is connected to the outer surface of the cylindrical part via both sides of the tail. Can be installed. Therefore, since the pet's torso is passed through the cylindrical portion, the position of the diaper is difficult to shift before and after mounting. Therefore, the diaper can be easily attached to an appropriate position on the body, and the state can be maintained even after the attachment. Further, even if the pet escapes during wearing, it is easy to redo the wearing operation after the pet's torso is passed through the cylindrical portion.

<Invention of Claim 2>
The cylindrical portion is provided with a plurality of trunk expansion / contraction portions extending in the circumferential direction and elastically expanding / contracting at least in the circumferential direction, and spaced apart in the front / rear direction, and extending in the circumferential direction between the cylinder expansion / contraction portions. The disposable diaper for pets according to claim 1, wherein a stretchable portion is provided, and the connecting portion is connected to the non-stretchable portion.

(Function and effect)
By providing the barrel expansion / contraction part in the cylindrical part in this manner, the diameter of the cylindrical part can be expanded and passed to the pet's torso when mounting, so that the mounting becomes easy and the cylindrical part is the pet. The diaper position is more difficult to shift due to the elastic fit around the torso. However, if the connecting part is attached to and detached from the torso expansion / contraction part, it is easy for the connecting part to come off when the torso extension / contraction part expands and contracts due to the movement of the pet. It is preferable to provide an interval in the direction and connect the connecting portion to the non-stretchable portion between them to prevent the connecting portion from being detached after being mounted. In addition to simply connecting the connecting part to the non-stretchable part, the non-stretchable part elastically fits the torso of the pet on both sides in the front-rear direction by providing a non-stretchable part between the trunk stretchable parts Therefore, the fitting property of the cylindrical portion is not easily impaired.

<Invention of Claim 3>
The cylindrical part is provided with three or more body stretchable parts spaced in the front-rear direction, and a plurality of parts among the parts located between the body stretchable parts are non-stretched and connected to the connecting part. The disposable diaper for pets according to claim 2, which is a part.

(Function and effect)
As a result, there are a plurality of non-stretchable parts in the front-rear direction, which are the connection positions of the connection parts, so that the connection position can be adjusted in the front-rear direction according to the size of each pet. Is visually divided, and this is a measure of the connection position.

<Invention of Claim 4>
Among the trunk expansion / contraction parts, the circumferential expansion / contraction force of the trunk expansion / contraction part located on the most front side and the circumferential expansion / contraction force of the trunk expansion / contraction part located on the most rear side are the circumference of the trunk expansion / contraction part located between them. The disposable diaper for pets according to claim 3, wherein the disposable diaper is stronger than the direction stretching force.

(Function and effect)
As described above, when three or more torso expansion / contraction parts are provided, by increasing the expansion / contraction force of the torso expansion / contraction parts on both the front and rear sides, the fit to the torso of the pet is improved, and the displacement is more difficult. . In addition, the circumferential direction stretching force means that the body stretchable part is cut out in a ring shape from the cylindrical part, cut at an arbitrary position in the circumferential direction to create a strip-shaped specimen, and both ends of the specimen in the stretching direction. The part is attached to a chuck of a tensile tester, a tensile test is performed at room temperature, 50 mm between chucks, and a tensile speed of 300 mm / min, and the load at 200% elongation (natural length is 100%) (N) Is divided by the width of the test piece (25 mm).

  As described above, according to the present invention, there are advantages such as that the position of the diaper is difficult to shift during and after mounting, and that replacement work is easy.

It is a top view in the state where the diaper was developed showing the inner surface of the disposable diaper for pets. It is a top view in the state where the diaper was developed showing the outer surface of the disposable diaper for pets. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 1. It is a disassembled perspective view. It is a perspective view which expands and shows the principal part of an elastic elastic band. It is the schematic which shows the mounting state to a pet. It is the schematic which shows the mounting state to a pet.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. “Vertical direction (front-rear direction)” means a direction connecting the ventral side (front side) and the back side (rear side) in the unfolded state, and “width direction” is a direction orthogonal to the vertical direction (front-rear direction). (Left-right direction). Further, the term “elongation rate” means a value when the natural length is 100%.

  1-7 has shown an example of the disposable diaper for pets. 3 and 4 are views showing a cross section taken along line 6-6 and line 7-7 in FIG. 1, respectively. The disposable diaper for pets includes a cylindrical part P through which the torso of the pet is passed, a main body part M for covering the cylindrical part P through both rear legs to the vicinity of the tail, and the main body part M. A connecting portion L that extends and passes through both sides of the tail and is detachably connected to the outer surface of the cylindrical portion P is provided. As can be understood from the wearing state shown in FIG. 7, such a disposable diaper has a connecting portion L extending from the main body portion M after passing through the tubular portion P through the rear leg P of the pet to the trunk. The attachment can be performed by a procedure of connecting to the outer surface of the cylindrical portion P via both sides of the tail. Therefore, since the pet's torso is passed through the cylindrical portion P, the position of the diaper is difficult to shift before and after mounting. Therefore, the diaper can be easily attached to an appropriate position on the body, and the state can be maintained even after the attachment. Further, even if the pet escapes during the mounting, it is easy to redo the mounting operation after passing the torso of the pet through the cylindrical portion P.

  Although each part can be made into an appropriate structure, the disposable diaper in the illustrated form is a backside exterior sheet 13 that constitutes a part of the tubular part P that covers the back side of the pet, and a pet part of the tubular part P. The width | variety of the rear end part of the abdominal exterior sheet | seat 12 which affixed the inner surface of the part which covers the abdominal side, and the outer surface of the main-body part M, and the inner surface of this abdominal exterior sheet | seat 12 Connecting portions L attached to both sides in the direction, both side portions of the back side exterior sheet 13 and both side portions of the abdominal side exterior sheet 12 are joined to form a side seal portion SS, as shown in FIG. In addition, a cylindrical portion P for passing the wearer's torso is formed. In addition, the code | symbol Y has shown the full length of the diaper, and the code | symbol X has shown the full width of the diaper.

(Interior body)
The interior body 200 can take any shape, but is rectangular in the illustrated form. As shown in FIGS. 3 and 4, the interior body 200 includes a surface sheet 30 on the body side, a liquid-impermeable back sheet 11, and an absorbent element 50 interposed therebetween. It is a part that bears the absorption function. Reference numeral 60 denotes a three-dimensional gather 60 that is provided on both sides of the interior body 200 and stands on the body side in order to prevent excrement from leaking to both sides of the interior body 200.

(Surface sheet)
The top sheet 30 has a property of transmitting liquid, and examples thereof include a porous or non-porous nonwoven fabric, a porous plastic sheet, and the like. Of these, the nonwoven fabric is not particularly limited as to what the raw fiber is. For example, synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, recycled fibers such as rayon and cupra, natural fibers such as cotton, and mixed fibers and composite fibers using two or more of them. Etc. can be illustrated. Furthermore, the nonwoven fabric may be manufactured by any processing. Examples of the processing method include known methods such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, a needle punch method, an air through method, and a point bond method. For example, if flexibility and drapeability are required, the spunbond method and spunlace method are preferable. If bulkiness and softness are required, the air-through method, point bond method, and thermal bond method are preferable processing methods. .

  Further, the top sheet 30 may be composed of one sheet or may be composed of a laminated sheet obtained by bonding two or more sheets. Similarly, the top sheet 30 may be composed of one sheet or two or more sheets in the planar direction.

  When providing the three-dimensional gather 60, both sides of the surface sheet 30 pass between the liquid-impermeable back sheet 11 and the three-dimensional gather 60 to the back side of the absorbent element 50 to prevent penetration of the liquid. It is preferable to adhere to the liquid-impermeable back sheet 11 and the three-dimensional gather 60 with a hot melt adhesive or the like.

(Impermeable liquid back sheet)
The material of the liquid-impermeable back sheet 11 is not particularly limited. For example, a plastic film made of an olefin resin such as polyethylene or polypropylene, a laminated nonwoven fabric in which a plastic film is provided on the surface of the nonwoven fabric, or plastic Examples thereof include a laminated sheet in which a nonwoven fabric or the like is laminated on a film and joined. For the liquid-impermeable back sheet 11, it is preferable to use a liquid-impervious and moisture-permeable material that has been preferred in recent years from the viewpoint of preventing stuffiness. As a plastic film having moisture permeability, a microporous plastic film obtained by kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, forming a sheet, and then stretching in a uniaxial or biaxial direction. Is widely used. In addition, non-woven fabric using micro-denier fibers, leakproof reinforcement by reducing the voids of the fibers by applying heat or pressure, and methods such as applying a superabsorbent resin or hydrophobic resin or water repellent Accordingly, a sheet that is liquid-impermeable without using a plastic film can also be used as the liquid-impermeable back sheet 11.

  Moreover, the excretion indicator from which a color changes by absorption of a liquid part can be provided in the inner side of the liquid-impermeable back sheet 11, especially the absorber 56 side surface.

(Three-dimensional gather)
The three-dimensional gather 60 is a belt-like member that extends over the entire front-rear direction along both side portions of the interior body 200, blocks urine and soft stool that move in the lateral direction along the top sheet 30, and prevents side leakage. It is provided for this purpose. The three-dimensional gather 60 of the present embodiment is provided so as to stand up from the side portion of the interior body 200, and stands up obliquely toward the center in the width direction.

  More specifically, the three-dimensional gather 60 folds the belt-shaped gather sheet 62 having a length equal to the length in the front-rear direction of the interior body 200 in the width direction and folds it into two. The elastic elastic member 63 is fixed in an elongated state along the longitudinal direction. An end portion of the three-dimensional gather 60 opposite to the folded portion in the width direction is an attachment portion 65 fixed to the back surface of the side edge portion of the interior body 200, and portions other than the attachment portion 65 protrude from the attachment portion 65. It is set as the protrusion part 66 (part by the side of a folding | turning part). Further, both end portions in the front-rear direction of the protruding portion 66 extend from the mounting portion 65 to the side surface of the topsheet 30 through the side portion of the interior body 200 and are hot-melted to the side surface of the topsheet 30. The front-rear fixing part 67 is fixed by an adhesive or heat seal, and the front-rear direction intermediate part of the projecting part 66 is an unfixed free part (inner free part). The member 63 is fixed in the extended state.

The gather sheet 62 is made of a spunbond nonwoven fabric (SS, SSS, etc.), SMS nonwoven fabric (SMS, SSMMS, etc.), a melt-blown nonwoven fabric with excellent uniformity and concealment, and water repellent with silicon as necessary. A treated product can be suitably used, and the fiber basis weight is preferably about 10 to 30 g / m ² . As the elongated elastic elastic member 63, rubber thread or the like can be used. Further, as shown in the drawing, a waterproof film 64 can be interposed between the gather sheets folded in two.

  The fixing target of the attachment portion 65 of the three-dimensional gather 60 can be an appropriate member such as the top sheet 30, the liquid-impermeable back sheet 11, and the absorbent element 50 in the interior body 200.

  In the three-dimensional gather 60 thus configured, the contraction force of the elongated elastic elastic member 63 acts so that both ends in the front-rear direction are brought close to each other, but the both ends in the front-rear direction of the protruding portion 66 are fixed so as not to stand up. On the other hand, since they are non-fixed free portions, only the free portions stand up against the body side as shown in FIG. In particular, when the attachment portion 65 is positioned on the back surface side of the interior body 200, the three-dimensional gather 60 stands up so as to open outward in the width direction at and around the crotch portion, so that the fit is improved.

(Absorption element)
The absorbent element 50 includes an absorbent body 56 and a packaging sheet 58 that wraps the entire absorbent body 56. The packaging sheet 58 can be omitted.

(Absorber)
The absorber 56 can be formed of an aggregate of fibers. As this fiber assembly, a filament assembly obtained by opening as necessary a synthetic fiber tow (fiber bundle) such as cellulose acetate, in addition to those obtained by stacking short fibers such as cotton-like pulp and synthetic fibers Can also be used. The fiber basis weight can be set to, for example, about 100 to 300 g / m ² when cotton-like pulp or short fibers are stacked, and in the case of a filament aggregate, for example, about 30 to 120 g / m ^2. Can do. The fineness in the case of a synthetic fiber is 1-16 dtex, for example, Preferably it is 1-10 dtex, More preferably, it is 1-5 dtex. In the case of a filament aggregate, the filament may be a non-crimped fiber, but is preferably a crimped fiber. The crimped degree of the crimped fiber can be, for example, 5 to 75, preferably 10 to 50, and more preferably about 15 to 50 per inch. Further, a crimped fiber that is uniformly crimped is often used. It is preferable to disperse and hold superabsorbent polymer particles in the absorber 56.

  The absorber 56 may have a rectangular shape, but when it has an hourglass shape having a front end portion, a rear end portion, and a narrow portion that is located between these, and is narrower than the front end portion and the rear end portion, It is preferable because the fit of the absorber 56 itself and the three-dimensional gather 60 around the legs is improved.

  Moreover, although the dimension of an absorber can be determined suitably, it is preferable to extend to the peripheral part of the interior body, or its vicinity in the front-back direction and the width direction. Reference numeral 56X indicates the width of the absorber 56.

(Superabsorbent polymer particles)
The absorber 56 can contain superabsorbent polymer particles in a part or all thereof. Superabsorbent polymer particles include “powder” in addition to “particles”. As the particle diameter of the superabsorbent polymer particles, those used in this type of absorbent article can be used as they are, and those having a particle size of 1000 μm or less, particularly 150 to 400 μm are desirable. The material of the superabsorbent polymer particles can be used without any particular limitation, but those having a water absorption of 40 g / g or more are suitable. High-absorbent polymer particles include starch-based, cellulose-based, and synthetic polymer-based starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, and sodium carboxymethylcellulose crosslinks. Or an acrylic acid (salt) polymer can be used. As the shape of the superabsorbent polymer particles, a commonly used granular material is suitable, but other shapes can also be used.

  As the superabsorbent polymer particles, those having a water absorption rate of 40 seconds or less are preferably used. When the water absorption speed exceeds 40 seconds, so-called reversion in which the liquid supplied into the absorber 56 returns to the outside of the absorber 56 is likely to occur.

  Further, as the superabsorbent polymer particles, those having a gel strength of 1000 Pa or more are preferably used. Thereby, even if it is a case where it is set as the bulky absorber 56, the sticky feeling after liquid absorption can be suppressed effectively.

The basis weight of the superabsorbent polymer particles can be appropriately determined according to the amount of absorption required for the use of the absorber 56. Therefore, although it cannot be said unconditionally, it can be set to 50 to 350 g / m ² . If the amount of polymer is less than 50 g / m ^2, it is difficult to secure the absorption amount. When it exceeds 350 g / m ² , the effect is saturated.

  If necessary, the superabsorbent polymer particles can adjust the spraying density or spraying amount in the plane direction of the absorber 56. For example, it is possible to increase the application amount of the liquid excretion site as compared to other sites. In addition, a portion where no polymer exists locally (for example, in a spot shape) in the planar direction of the absorber 56 can also be provided.

(Packaging sheet)
When the packaging sheet 58 is used, as the material, tissue paper, particularly crepe paper, non-woven fabric, polylaminated non-woven fabric, a sheet with small holes, or the like can be used. However, it is desirable that the superabsorbent polymer particles be a sheet that does not escape. When a nonwoven fabric is used in place of the crepe paper, a hydrophilic SMS nonwoven fabric (SMS, SSMMS, etc.) is particularly suitable, and the material can be polypropylene, polyethylene / polypropylene composite material, or the like. The basis weight is preferably 5 to 40 g / m ² , particularly 10 to 30 g / m ² .

  The packaging form of the packaging sheet 58 can be determined as appropriate, but from the viewpoint of ease of manufacture and prevention of leakage of the superabsorbent polymer particles from the front and rear end edges, the cylinder is formed so as to surround the front and back surfaces and both side surfaces of the absorbent body 56. It is preferable that the front and rear edges of the absorbent body 56 are protruded from the front and back of the absorbent body 56, and the protruding portions are crushed in the front and back directions and joined by a joining means such as a hot melt adhesive.

(Exterior sheet)
The abdominal side exterior sheet 12 and the back side exterior sheet 13 have waist portions 12D and 13D that constitute the cylindrical portion P, and the abdominal side exterior sheet 12 further includes a rearward extending portion 12B that constitutes the main body portion M. Have. The waist portions 12D and 13D conceptually include a “front edge” F that forms the edge of the front end opening of the cylindrical portion P, and a “rear edge” that forms the edge of the front end opening of the cylindrical portion P. "B" and "intermediate part" T which is a part between them. Moreover, the both-sides edge of the back extension part 12B in the ventral | abdominal exterior sheet | seat 12 is bundled along the circumference | surroundings of a pet's leg, As a result, the abdominal exterior sheet | seat 12 has comprised the substantially hourglass shape as a whole.

As shown in FIGS. 3 and 4, the waist portions 12 </ b> D and 13 </ b> D of the abdominal exterior sheet 12 and the back exterior sheet 13 have two sheet base materials OS and IS made of an adhesive such as a hot melt adhesive. It is formed by bonding. These sheet base materials OS and IS can be used without particular limitation as long as they are in sheet form, but are preferably non-woven fabrics. The nonwoven fabric is not particularly limited as to what the raw fiber is. For example, synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, recycled fibers such as rayon and cupra, natural fibers such as cotton, and mixed fibers and composite fibers using two or more of them. Etc. can be illustrated. Furthermore, the nonwoven fabric may be manufactured by any processing. Examples of the processing method include known methods such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, a needle punch method, an air through method, and a point bond method. When using a nonwoven fabric, it is preferable that the basic weight shall be about 10-30 g / m < ² >.

  And in each waist part 12D, 13D of the abdominal side exterior sheet 12 and the back side exterior sheet 13, in order to improve the fit property with respect to the waist part, trunk stretch parts 15-18 elastically stretched in the width direction are spaced apart in the front-rear direction. A plurality of the space expansion / contraction portions 15-18 are provided with a non-expansion / contraction portion 14 minutes extending in the circumferential direction, and each of the body expansion / contraction portions 15-18 is provided between the sheet bases OS and IS. Are formed by sandwiching and fixing elongated elastic elastic members 15g to 18g such as rubber thread at a predetermined elongation rate.

  As the elongated elastic elastic members 15g to 18g, synthetic rubber or natural rubber may be used. Hot melt bonding or heat sealing or ultrasonic bonding by various coating methods can be used for bonding the two sheet base materials OS and IS and fixing the elongated elastic stretch members 15g to 18g sandwiched therebetween.

  More specifically, among the waist portions T of the abdominal side exterior sheet 12 and the back side exterior sheet 13, trunk expansion / contraction portions are respectively formed at two positions of the front edge portion F, the rear edge portion B, and the intermediate portion T. As described above, the plurality of elongated elastic elastic members 15g to 18g are vertically spaced so as to be continuous over the entire width direction between the inner sheet base IS and the outer sheet base OS in the longitudinal range of each part. And is fixed in a state of being stretched along the width direction at a predetermined stretch rate. Therefore, it is comprised so that the contraction force of the circumferential direction may act on the whole circumferential direction of the cylindrical part P. FIG.

Elastically stretchable as a member 15G～18g, thickness 155～1880Dtex, particularly about 470～1240Dtex (the case of synthetic rubber. Cross-sectional area in the case of natural rubber 0.05 to 1.5 mm ^2, in particular 0.1 to 1. Thread rubber of about 0 mm ² ) can be suitably used, and in each of the body stretchable parts 15 to 18, about 3 to 10 at intervals of 4 to 12 mm, respectively, with an elongation of about 150 to 400%, particularly about 220 to 320%. It is preferable to fix.

  In particular, the circumferential expansion / contraction force of the trunk expansion / contraction part 15 of the front edge part F and the trunk expansion / contraction part 18 of the rear edge part E is stronger than the circumferential expansion / contraction force of the trunk expansion / contraction parts 16 and 17 of the intermediate part T (for example, 1.. The elastic elastic members 15g and 18g of the front edge portion F and the rear edge portion E are at least one of the thickness, the elongation rate, and the number of elastic elastic members 16g of the intermediate portion T, It is preferably thicker, higher or higher than 17g. As described above, when three or more torso stretchable parts 15 to 18 are provided, the stretchability of the torso stretchable parts 15 and 18 on both the front and rear sides is made stronger, thereby improving the fit to the torso of the pet and making it difficult to shift. It will be even more. In addition, the circumferential direction expansion / contraction force cuts the body expansion-contraction parts 15-18 from the cylindrical part P in ring shape, cuts it in the arbitrary positions of the circumferential direction, creates a strip-shaped test piece, Attach both ends in the direction of expansion and contraction to the chuck of the tensile tester, conduct a tensile test at room temperature, 50 mm between chucks, and a tensile speed of 300 mm / min. When 200% elongation (natural length is 100%) It means a value obtained by dividing the load (N) by the width (25 mm) of the test piece.

  On the other hand, the length in the front-rear direction of the non-stretchable portion 14 can be determined as appropriate and may be shorter than the locking means of the connecting portion L described later, but is preferably longer.

  Although not shown, when the elastic elastic members 15g to 18g in the ventral side exterior sheet 12 are provided on both sides in the width direction except for the central portion in the width direction overlapping the interior body 200, the interior body 200 is in the width direction. It is preferable because it does not shrink more than necessary, and it does not look bad or absorbs. In this embodiment, there are elastic elastic members 15g to 18g from one side to the other side in the width direction across the interior body 200, in addition to the form in which the elastic elastic members 15g to 18g exist only on both sides in the width direction. The elastic stretchable members 15g to 18g are finely cut at the central portion in the width direction overlapping with the interior body 200, and contraction force does not act (substantially equivalent to not providing the elastic stretchable member), and both sides in the width direction. A configuration in which only the contraction force acting part is configured is also included.

  On the other hand, in the illustrated embodiment, leg elastic elastic members 90, 90 made of an elongated elastic elastic member such as rubber thread are provided on both sides of the body portion M of the abdominal exterior sheet 12, that is, the edge of the leg. It is fixed in a state of being stretched along, but this can be omitted.

  Further, a tail fit-in portion 100 formed by cutting and raising is provided at the center in the width direction of the rear end portion of the ventral-side exterior sheet 12. The tail fit-in part 100 may be completely cut off or may be formed as necessary by perforations or the like. Further, the tail fitting portion 100 can be omitted.

(Consolidated part)
The connecting portion L includes a root portion 81 fixed to the rear end portion of the abdominal exterior sheet 12, an extension portion 82 extending from the rear edge of the abdominal exterior sheet 12, and a distal end side of the extension portion 82. And locking means 83 provided. The root portion 81 may be attached to the inner surface or the outer surface of the abdominal exterior sheet 12, but may be fixed between the sheet bases OS and IS of the abdominal exterior sheet 12 as shown in FIG.

  The extending portion 82 can be formed by forming a sheet base material made of a nonwoven fabric, a plastic film, a polylaminated nonwoven fabric, paper, or a composite material thereof into an appropriate shape such as a belt shape. The hook material (male material) of the fastener (surface fastener) can be provided by being fixed to the extending portion 82 by a hot melt adhesive, heat sealing or the like. The hook material has a large number of engaging projections on the outer surface side thereof. The shape of the engaging protrusion is (A) Le-shaped, (B) J-shaped, (C) Mushroom-shaped, (D) T-shaped, (E) Double J-shaped (J-shaped And the like may be any shape. Instead of the hook material, an adhesive material layer can be provided as the locking means 83. In addition, it is preferable to provide a portion that does not have the locking means 83 at the distal end portion of the extending portion 82 because the portion becomes a knob and the attaching / detaching operation becomes easy.

  On the outer surface of the backside exterior sheet 13 which is a locking portion of the locking means 83, a target sheet for facilitating locking (not shown, but, for example, a hook material when the locking means 83 is a hook material) The surface of the sheet base material made of plastic film or non-woven fabric with many loop yarns entangled with the engagement protrusions or the surface rich in adhesiveness when the locking means 83 is an adhesive material layer. The surface of a sheet base material made of a smooth plastic film can be provided with a release treatment, but there are also problems such as increased material costs and reduced air permeability and flexibility. When the outer surface of the sheet 13 is made of a nonwoven fabric, such a target sheet is omitted, and the hook material or the adhesive layer is entangled with the nonwoven fabric on the outer surface of the backside exterior sheet 13 to be locked or adhered. That it is preferable.

  Although the dimension of the extension part 82 and the latching means 83 can be determined suitably, normally, the length of the extension part 82 is about 80 to 250 mm, and the width of the extension part 82 is about 15 to 45 mm. The length of the locking means 83 is preferably about 10 to 50 mm, and the width of the locking means 83 is preferably about 14 to 44 mm.

  In particular, as shown in the drawing, it is preferable that the extending portion 82 is configured to elastically expand and contract in the longitudinal direction. Such an extension portion 82 uses an elastic stretch material such as a rubber sheet or stretchable nonwoven fabric as its material, and, as shown in FIG. 6, the belt-shaped sheet base materials 80a and 80b are bonded together by a hot melt adhesive 80d or the like. In addition, it is possible to suitably use a structure in which the elastic elastic member 84 is stretched in the longitudinal direction between the sheet bases 80a and 80b and fixed to the sheets 80a and 80b with a hot melt adhesive 80d or the like. In this case, as the elastic elastic member 84, it is preferable to provide a plurality of elastic members 84 that are narrower than the sheet base material such as a thread shape or a string shape at intervals in the width direction.

  In use, as shown in FIG. 7, after passing through the tubular portion P through the rear leg of the pet to the torso, the connecting portion L extending from the main body portion M is tubular through the both sides of the tail. The mounting can be performed by connecting to the outer surface of the portion P. In the mounted state, the rear end portion of the abdominal side exterior sheet 12 may overlap the rear end portion of the back side exterior sheet 13 or may be slightly separated.

  In the case of the illustrated embodiment, because the cylindrical portion P is provided with the trunk expansion / contraction portions 15 to 18, the diameter of the cylindrical portion P can be expanded and passed to the pet's trunk at the time of mounting, and mounting is easy. In addition, since the cylindrical portion P is elastically fitted around the torso of the pet, the position of the diaper is more difficult to shift. However, since it will become easy to generate | occur | produce the situation where the connection part L remove | deviates when the structure which attaches and detaches the connection part L with respect to the trunk expansion-contraction parts 15-18, when the trunk expansion-contraction parts 15-18 expand / contract by movement of a pet. Are provided with a space in the front-rear direction, and the connecting portion L is connected to the non-stretchable portion 14 therebetween (that is, the locking means 83 is locked to the outer surface of the non-stretchable portion 14). It is preferable that the connecting portion L is prevented from coming off after being mounted. Further, not only by simply connecting the connecting portion L to the non-stretchable portion 14, but also by providing the non-stretchable portion 14 between the trunk stretchable portions 15-18, the non-stretchable portion 14 is elastic on the pet's torso on both sides in the front-rear direction. Therefore, the fitting property of the cylindrical portion P is not easily impaired.

  In addition, since a plurality of non-stretchable portions 14 that are the connecting positions of the connecting portions L are provided in the front-rear direction, the connecting positions can be adjusted in the front-rear direction according to the size of each pet, It is visually partitioned by the expansion / contraction parts 15-18, and it becomes a standard of a connection position.

  In particular, when the connecting portion L has a sufficient length or is sufficiently extendable, it is possible not only to easily adjust the connecting position in the front-rear direction, but also to connect both connecting portions L to the front side. It can be oriented to the center side in the width direction as it goes to (for example, a cross-shaped X shape as shown in FIG. 8 as well as a cross-shaped shape as shown in FIG. 8). There is an advantage that becomes possible.

  The present invention can be used for disposable diapers for pets.

  DESCRIPTION OF SYMBOLS 11 ... Liquid impervious sheet, 12 ... Ventral exterior sheet, 13 ... Backside exterior sheet, 30 ... Surface sheet, 40 ... Intermediate sheet, 50 ... Absorbing element, 56 ... Absorber, 58 ... Packaging sheet, 60 ... Side Three-dimensional gather, 62 ... Gather sheet, P ... Cylindrical portion, M ... Main body portion, L ... Connected portion.

Claims (4)

  A cylindrical part through which the pet's torso is passed, a main body part that covers between the cylindrical part and both rear legs and covers the vicinity of the tail, and extends from this main body part and passes through both sides of the tail. A disposable diaper for pets, comprising: a connecting portion detachably connected to an outer surface of the portion.   The cylindrical portion is provided with a plurality of trunk expansion / contraction portions extending in the circumferential direction and elastically expanding / contracting at least in the circumferential direction, and spaced apart in the front / rear direction, and extending in the circumferential direction between the cylinder expansion / contraction portions. The disposable diaper for pets according to claim 1, wherein a stretchable portion is provided, and the connecting portion is connected to the non-stretchable portion.   The cylindrical part is provided with three or more body stretchable parts spaced in the front-rear direction, and a plurality of parts among the parts located between the body stretchable parts are non-stretched and connected to the connecting part. The disposable diaper for pets according to claim 2, which is a part.   Among the trunk expansion / contraction parts, the circumferential expansion / contraction force of the trunk expansion / contraction part located on the most front side and the circumferential expansion / contraction force of the trunk expansion / contraction part located on the most rear side are the circumference of the trunk expansion / contraction part located between them. The disposable diaper for pets according to claim 3, wherein the disposable diaper is stronger than the direction stretching force.

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