JP2015083110A - Pants-type diaper cover, and water-soluble pad used in the cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pant-type diaper cover of a low cost using no string-like rubber member around a waste, and an exchange type water soluble pad.SOLUTION: A pant-type diaper cover (20) has an exchange type water-soluble pad (50) made removable. The pant-type diaper cover (20) comprises two nonwoven fabric sheets (22) made of a material having an elastically stretchable performance and capable of being thermally deposited; and two leakage preventing sheets (30) individually arranged on the outer sides of the two nonwoven fabric sheets and made of a synthetic resin film capable of being thermally deposited. The pant-type diaper cover has crotch parts (38) and two side parts (39) constructed by welding the two nonwoven fabric sheets and the two leakage preventing sheets thermally and by forming a waist opening (27), and a pair of transverse leg part openings (29). The pant-type diaper cover has no elastic extensible rubber in the opening of the waist.

Description

  The present invention relates to a pant-type diaper cover that is a water-soluble pad such as a sanitary napkin or a diaper that can be washed in a flush toilet and that houses and holds the water-soluble pad inside.

  Currently, pants-type diaper covers are on sale. For example, Patent Document 1 proposes a diaper cover that can replace an inexpensive small flat paper diaper. The diaper cover disclosed in Patent Document 1 is configured to accommodate a diaper. This diaper is formed flat and is made of paper or non-woven fabric. Inside the surface material, for example, an absorber such as a polymer is accommodated so that liquid components such as urine can be quickly absorbed. Moreover, the diaper cover is comprised from the main body and the accommodating member of the inner side, and the accommodating member consists of the cloth which consists of cotton, a synthetic fiber, or a blend. And the upper-end part of the main body of a diaper cover becomes opening corresponding to a user's trunk | drum, The string-like rubber member etc. are arrange | positioned at the peripheral part. When the rubber member is elastically contracted, the upper end portion of the diaper cover presses the torso or waist of the user.

JP-A-11-216164

  However, when a string-like rubber member or the like is disposed on the periphery of the upper end of the diaper cover, eczema may occur on the user's waist or torso. Moreover, when the rubber member is arranged in this way, the product cost of the diaper cover increases.

  Therefore, the present invention provides a low-cost pant-type diaper cover that does not use any string-like rubber member around the waist. It also provides a replaceable water-soluble pad used for pants-type diaper covers.

  The pants-type diaper cover according to the first aspect is a pants-type diaper cover in which a replaceable water-absorbing pad is detachable. The pants-type diaper cover is composed of two non-woven sheets made of a material that has elastic expansion and contraction and can be heat-welded, and two protective sheets made of a synthetic resin film that are arranged on the outside of the two non-woven sheets and can be heat-welded. A leakage sheet. The crotch part and both side parts of the pant-type diaper cover have a structure in which two nonwoven sheets and two leak-proof sheets are welded by heat to form a waist opening and a pair of left and right leg openings. is there. The pants-type diaper cover has no elastic elastic rubber at the waist opening.

In the pants-type diaper cover according to the second aspect, the two nonwoven fabric sheets are a nonwoven fabric sheet of the front body and a nonwoven fabric sheet of the back body, and the elastic stretch of the nonwoven fabric sheet of the back body is more elastic than the nonwoven fabric sheet of the front body. large.
In the pants-type diaper cover according to the third aspect, ventilation through holes are formed along both side portions.

  The water-absorbing pad according to the fourth aspect is a replaceable water-absorbing pad used for the pants-type diaper cover according to the first to third aspects. The water-absorbing pad comprises a water-absorbing paper layer made of water-soluble water-absorbing paper stacked in multiple layers, a mixed layer of water-absorbing pulverized pulp and water-soluble polymer disposed on the water-absorbing paper layer, and a water-absorbing paper layer. Covers the mixed layer from the bottom and becomes a cushion in the absorbent paper layer and mixed layer, and the staple / rayon cotton layer is placed from the bottom to the side of the staple / rayon cotton layer to give a soft touch and feel to the whole and is water-soluble And a water-soluble waterproof film having a temporary water resistance, and a water-soluble covering sheet covering the whole so as to accommodate the water-absorbing paper layer, the mixed layer, the staple / rayon cotton layer and the water-soluble waterproof film. And water-insoluble materials are not used.

The water-absorbing pad according to the fifth aspect includes a water-soluble adhesive tape that adheres to the nonwoven fabric sheet of the pants-type diaper cover on the water-soluble waterproof film side and outside the cover sheet.
The water-absorbing pad according to the sixth aspect has a rectangular shape having a short side and a long side when seen in a plan view, and is easily cut by extending from the first cut portion cut into the short side and the first cut portion. Perforations are formed.
The water-absorbing pad according to the seventh aspect has a rectangular shape having a short side and a long side when seen in a plan view, and is easily cut by extending from the second cut portion cut into the long side and the second cut portion. Perforations are formed.

  Since the pants-type diaper cover of the present invention does not use a string-like rubber member around the waist, the occurrence of eczema on the waist or torso is reduced. In addition, the replaceable water-soluble pad can be directly poured into a flush toilet and can be easily treated after use. Since the replaceable water-soluble pad that has absorbed urine and the like becomes a raw material for recycled paper when recovered and washed, waste of resources can be eliminated. Furthermore, the water-soluble pad can be regenerated infinitely.

It is a front view of the diaper cover 20. It is an enlarged view of the AA cross section of FIG. (A) is a conceptual top view of the manufacturing line of the diaper cover 20. FIG. (B) is a conceptual side view of the production line. (C) is an enlarged view of a cross section of a long sheet. It is the figure which looked at the unfolded diaper cover 20 from the top to the bottom (Y-axis direction), and is explanatory drawing which shows the state which has arrange | positioned the water-soluble pad 50 in the crotch part. 3 is a plan view of a water-soluble pad 50. FIG. It is BB sectional drawing of FIG. (A) is a figure of the pet diaper cover 120 with which the dog 110 was mounted | worn. (B) is a top view of 122 A of lower nonwoven fabrics. (C) is a top view of the upper nonwoven fabric 122B. It is the figure of the pet diaper cover 120 seen in the -Y-axis direction from the + Y-axis side.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Various technically preferable limitations are given, but the scope of the present invention is not limited to these embodiments unless otherwise specified in the following description.

<First Embodiment>
(Diaper cover structure)
FIG. 1 is a plan view of the diaper cover 20, and FIG. 2 is an enlarged view of the AA cross section of FIG. The planar shape of the diaper cover 20 is a pants type. A human waist opening 27 and a pair of leg openings 29 are formed. Further, the crotch portion 38 and both side portions 39 of the diaper cover 20 are heat-welded.

  The diaper cover 20 has the nonwoven fabric sheet of the 2 layer structure which consists of 22A of front body nonwoven fabrics, and 22B of back body nonwoven fabrics, as FIG.1 and FIG.2 shows. The front body non-woven fabric 22A and the back body non-woven fabric 22B are made of a non-woven fabric formed from fibers having a core / sheath structure. The fiber having the core / sheath structure exhibits stretch performance by a resin excellent in elastic stretchability forming the core, and exhibits soft tactile performance by a polyolefin-based resin constituting the sheath. For example, examples of the resin excellent in elastic stretchability include polyurethane, polypropylene, polyethylene, polyester, polystyrene, and polybutadiene resins. Examples of the polyolefin-based resin include resins such as polyethylene, polypropylene, and copolymers of those monomers and other α-olefins.

  It is preferable that the stretch recovery rate of the front body nonwoven fabric 22A and the back body nonwoven fabric 22B is 80%. The elasticity of the diaper cover 20 is improved, and the user can get a fit. In particular, the rear body non-woven fabric 22B, which is the human buttock side, can give the user a fit when the stretch recovery rate is larger than that of the front body non-woven fabric 22A. For this reason, it is preferable that the back body nonwoven fabric 22B has a stretch recovery rate of 90% or more.

Here, the stretch recovery rate (%) is 100% stretched at a gripping interval “K” cm with a tensile tester, and left for 1 minute under 100% stretch, and then the sample is returned to the zero point. Then, it is stretched again, the distance at which the stretching stress remains zero is measured, and the stretch recovery rate is calculated from the following formula.
Elongation recovery rate (%) = [K (cm) −distance where elongation stress remains zero (cm)] / K (cm) × 100

  On the outside (non-skin contact surface side) of the front body nonwoven fabric 22A and the back body nonwoven fabric 22B, a leak-proof sheet 30 (30A, 30B) is disposed so as to cover the front body nonwoven fabric 22A and the back body nonwoven fabric 22B. As the front body leakage preventing sheet 30A and the back body leakage preventing sheet 30B, liquid-impervious laminate sheets such as polyvinyl alcohol and a vegetable liquid film are used. In general, since the leak-proof sheet 30 is a non-porous sheet and does not have good air permeability, a through-hole 32 for ventilation may be provided. The through hole 32 is preferably formed around the side portions 39 of the welded portion, for example. The both side portions 39 of the welded portion are harder than other portions by welding, so that not only the function of the through hole 32 for ventilation but also the elasticity of the side portions 39 is increased. Moreover, the through-hole 32 may be formed in the leg part and waist circumference with little possibility of urine leakage.

  In recent years, a sheet having moisture permeability has been developed from the viewpoint of preventing stuffiness. The leak-proof sheet 30 may use a water shielding / moisture permeable sheet. In this case, it is not always necessary to provide the through hole 32 for ventilation. This water-impervious and moisture-permeable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in polyvinyl alcohol or the like to form a sheet, and then stretching in a uniaxial or biaxial direction. The microporous sheet is superior to the nonporous sheet in terms of flexibility if the sheet thickness is the same as that of the nonporous sheet. The sheet basically uses only a water-soluble material.

  The front body leak-proof sheet 30 </ b> A and the back body leak-proof sheet 30 </ b> B also preferably have an extension recovery rate of 80% so as to match the nonwoven fabric 22. Moreover, it is preferable that the back body leak-proof sheet | seat 30B which is a buttocks side has an expansion | restoration recovery rate 90% or more.

  The front body nonwoven fabric 22A, the back body nonwoven fabric 22B, and the leak-proof sheet 30 (30A, 30B) are welded by a partial heat welding method, a hot air method, a joining (hot melt agent) method using a molten component, or the like. In particular, the partial heat welding method is preferable from the viewpoint of strength. In the partial heat welding process, the crotch part 38 and both side parts 39 are thermally welded by an ultrasonic method or a heated embossing roll method. The heat-welded heat-bonded area HA integrates the front body nonwoven fabric 22A, the back body nonwoven fabric 22B, and the two leak-proof sheets 30A and 30B. The width of the heat welding area HA in the partial heat welding is preferably 3 mm to 10 mm from the viewpoint of strength maintenance and flexibility. The pants-type diaper cover 20 is completed by heat welding in this way.

  The pants-type diaper cover 20 of the present embodiment is not provided with a rubber member that is a string-like or thread-like elastic elastic member around the waist (around the opening 27). The diaper cover adheres to the body by the nonwoven fabric 22 and the leak-proof sheet 30 having an elongation recovery rate of 80%. If a pants-type diaper cover string-like or thread-like rubber member is disposed, eczema may occur on the torso or waist of the user. Moreover, since the rubber member is not arranged in this way, the product cost of the diaper cover 20 can be reduced.

(Manufacture of diaper covers)
3A and 3B are conceptual diagrams of a production line for the pant-type diaper cover 20. FIG. 3A is a plan view seen from above, and FIG. 3B is a side view seen from the side. FIG. 3C is an enlarged cross-sectional view of the long sheet.

  In FIG. 3, a long sheet serving as a diaper cover is supplied from the left side to the right side by a roller RR. As shown in FIG. 3C, the long sheet is, for example, overlapped in the order of the rear body leakage preventing sheet 30B, the back body nonwoven fabric 22B, the front body nonwoven fabric 22A, and the front body leakage preventing sheet 30A from the bottom. is there.

  As shown in FIGS. 3A and 3B, the stacked long sheets are cut into a pants shape by a high-pressure water cutting device 92. Moreover, as shown in FIG. 1, the through-hole 32 for ventilation is cut simultaneously. You may cut with a press type cutter etc. instead of the high pressure water cutting device 92.

  Next, in the cut and stacked long sheet, a heat welding region HA is formed by an embossing roll 94 in which a concavo-convex pattern is processed on the roll surface. As shown in FIG. 1, the crotch part 38 and both side parts 39 are heat-welded. Specifically, for example, the laminated back body leakage preventing sheet 30B, the back body nonwoven fabric 22B, the front body nonwoven fabric 22A, and the front body leakage preventing sheet 30A pass between the embossing roll 94 and the anvil roll 96. Heating and pressurizing are performed, and a thermal welding region HA is formed between these sheets by a so-called embossing process. For example, the embossing roll 94 and the anvil roll 96 are heated to about 100 to 130 ° C., and the pressure is appropriately changed to realize heating and pressurization to such an extent that no holes are formed in these sheets. The back-body leak-proof sheet 30B, the back-body nonwoven fabric 22B, the front-body nonwoven fabric 22A, and the front-body leak-proof sheet 30A are bonded together reliably by melting these thermoplastic components, so that they do not peel off. Although not specifically described, the thermoplastic resin may be integrated using ultrasonic welding in which these sheets are instantaneously melted and bonded by fine ultrasonic vibration and pressure.

  Thus, the pants-type diaper cover 20 is completed through two steps. With a relatively simple facility, it can be cut into a pant shape, and if necessary, a through hole 32 for ventilation can be formed at the same time. And the back body leak-proof sheet 30B, the back body nonwoven fabric 22B, the front body nonwoven fabric 22A, and the front body leak-proof sheet 30A are heat-welded continuously. For this reason, it can be manufactured at high speed, and the manufacturing cost of the pant-type diaper cover 20 can be greatly reduced.

(Water-soluble pad structure)
FIG. 4 is a view of the diaper cover 20 with the waist opening 27 widened, as viewed from the top down (Y-axis direction). And the opening part 29 of a pair of leg part is visible. A water-soluble pad 50 is fixed to the crotch portion between the openings 29 of the pair of leg portions. The water-soluble pad 50 is fixed to the front body nonwoven fabric 22A and the back body nonwoven fabric 22B with an adhesive tape AT (see FIG. 5 or 6).

  The water-soluble pad 50 is removed from the front body nonwoven fabric 22A and the back body nonwoven fabric 22B after excrement such as stool or urine is attached. And the water-soluble pad 50 is discarded with the excrement as it is in the flush toilet. Or it can be made into a recycled paper after collect | recovering collectively. As will be described later, the water-soluble pad 50 is entirely made of a water-soluble material, and no water-insoluble material is used. The pants-type diaper cover 20 can be used repeatedly as long as it is not dirty. A typical washing machine and detergent can be cleaned 10 times.

  On the other hand, since the water-soluble pad 50 does not use an insoluble leak-proof sheet or the like, excrement may leak from the water-soluble pad 50, such as when there is much excrement. In this case, the excrement is received by the front body nonwoven fabric 22A and the back body nonwoven fabric 22B of the diaper cover 20, so that the front body leakage preventing sheet 30A and the back body leakage preventing sheet 30B do not leak excrement outside. . Thus, if the front body nonwoven fabric 22A and the back body nonwoven fabric 22B of the pants-type diaper cover 20 are contaminated, the pants-type diaper cover 20 is discarded.

  5 is a plan view of the water-soluble pad 50, and FIG. 6 is a cross-sectional view taken along the line BB of FIG. The planar shape of the water-soluble pad 50 is a rectangular shape having a short side and a long side. Two cuts 51 are formed on one short side of the water-soluble pad, and two cuts 51 are formed on the other short side. A perforation 53 is formed from one cut portion 51 to the other cut portion 51. Similarly, two cut portions 52 are formed in each of the pair of long sides of the water-soluble pad. A perforation 54 is formed from one cut portion 52 to the other cut portion 52.

  The notch 51, the notch 52, the perforation 53, and the perforation 54 are for allowing the water-soluble pad 50 to be finely divided after the water-soluble pad 50 is used. All the water-soluble pads 50 are made of a water-soluble material. When the excrement is urine, it is divided into nine parts using the cut portions 51 and 52 and the perforations 53 and 54. Thereby, the water-soluble pad 50 can be flowed without clogging the flush toilet with a small amount of water for urine. When the excrement is stool, after putting the stool into the flush toilet, it is divided into nine parts using the cut portions 51 and 52 and the perforations 53 and 54. Thereby, the water-soluble pad 50 and stool can be flushed with a flush toilet. Because it can be subdivided finely, it uses a flush toilet, so the user can feel safe both physically and psychologically. In addition, the water-soluble pad 50 can be collected and washed, and then recycled into recycled pulp or reused in water absorbent paper.

  In FIG. 5, the cut portion 51 is provided at two places on the top and bottom, and the cut portion 52 is provided at two places on the left and right sides, so that it can be divided into nine divisions. However, only one of the cut portion 51 or the cut portion 52 may be provided so that it can be divided into three, or the number of the cut portions 51 or the cut portions 52 may be increased so as to be divided into 16 portions.

  In FIG. 5, the adhesive tapes AT (AT-A, AT-B) are arranged one by one on the short side of the rectangular water-soluble pad 50. The base material of the adhesive tape AT is made of a water-soluble material such as paper, and an adhesive is applied thereon. An adhesive is basically a water-soluble substance. Moreover, the cover film is attached so that the adhesive may be covered. When attaching the water-soluble pad 50 to the pants-type diaper cover 20, the cover film of the adhesive tape AT-A is peeled off, and the adhesive tape AT-A is attached to the front nonwoven fabric 22A. Next, the cover film of the adhesive tape AT-B is peeled off, and the adhesive tape AT-B is attached to the back body nonwoven fabric 22B. Although not specifically illustrated, the mark matches the shape of the adhesive tape AT-A for attaching the adhesive tape AT-A to the front body nonwoven fabric 22A, and the shape of the adhesive tape AT-B for attaching the adhesive tape AT-B to the rear body nonwoven fabric 22B. It is desirable to draw a matching mark. In addition, as long as the water-soluble pad 50 can be arrange | positioned in the predetermined position of the underpants type diaper cover 20, it is not necessarily required to provide adhesive tape AT.

  As shown in FIG. 6, the water-soluble pad 50 is composed of a plurality of water-soluble materials, and has a structure in which a plurality of materials are stacked in layers. First, the water-soluble pad 50 has a water-absorbing paper layer 61 superposed on four to eight layers. First, the water-absorbing paper layer 61 is concavo-convex (embossed) so as to form a groove in the Y-axis direction. Excrements such as urine that have penetrated to the absorbent paper layer 61 spread in the X-axis direction and supply water due to capillary action.

  A mixed layer 63 of pulverized pulp and water-absorbing polymer is disposed on the water-absorbing paper layer 61 (+ Y-axis direction). Specifically, examples of the pulverized pulp include cellulose-based pulp such as plant starch, and examples of the water-absorbing polymer include polyacrylic acid-based water-soluble polymer.

  The water absorbent paper layer 61 and the mixed layer 63 are wound so as to be entirely covered with the staple / rayon cotton layer 65. That is, under the water absorbent paper layer 61 (−Y axis direction), above the mixed layer 63 (+ Y axis direction), and these lateral directions (± X axis direction) are covered with the staple / rayon cotton layer 65. In addition to water absorption, the staple / rayon cotton layer 65 is provided so that the water absorbent paper layer 61 and the mixed layer 63 are not laterally displaced (X, Y, Z axis directions). Here, the staple / rayon cotton means a rayon cotton having a short fiber length as compared with a high-quality rayon cotton bed described later. Staple / rayon cotton is excellent in water absorption and water-soluble.

  A waterproof film 67 is arranged from below (−Y axis direction) to the side of the staple / rayon cotton layer 65. This is to prevent the water-soluble pad 50 from leaking immediately when there is a large amount of excrement such as urine. Since the waterproof film 67 is water-soluble, the waterproof function of the waterproof film 67 is temporary. Specifically, the waterproof film 67 is a polyvinyl alcohol (PVA) film that is very hydrophilic and soluble in warm water.

  A cover sheet 69 covers the water absorbent paper layer 61, the mixed layer 63, the staple / rayon cotton layer 65, and the waterproof film 67. Since the covering sheet 69 touches human skin, a wet non-woven fabric that forms a three-dimensional gather is used. The material of the cover sheet 69 is high-quality rayon and is water-soluble.

  Currently, commonly used water-soluble pads such as disposable diapers and sanitary napkins always contain an absorber and a plastic film for preventing leakage. Since plastic is a chemical fiber, it is collected as garbage after use and burned in an incinerator. Moreover, incineration has a great influence on air pollution, and the cost and load of post-processing are large. In addition, since conventional water-soluble pads cannot be washed away in a flush toilet, it has been time-consuming to dispose of excrement such as stool in a flush toilet and then treat the water-soluble pad as garbage.

  On the other hand, the water-soluble pad 50 of the present embodiment can be disassembled in a flush toilet and does not need to be incinerated, so environmental pollution can be avoided. Moreover, since the water-soluble pad 50 can be flushed together with the excrement in a flush toilet, less time is required for processing.

Second Embodiment
The diaper cover 20 shown in the first embodiment is a human diaper cover. However, the diaper cover 20 may be formed as a pet diaper cover 120 by changing the shape of the diaper cover 20 to that of a pet. The pet diaper cover 120 will be described below. In the following description, the same parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted.

(Configuration of pet diaper cover 120)
FIG. 7A is a diagram of the pet diaper cover 120 attached to the dog 110. The pet diaper cover 120 is formed with an opening 127 for the trunk of the dog 110, an opening 128 for the tail 111, and an opening 129 for the rear foot 112. In the following description, the direction in which the trunk opening 127 is formed when viewed from the pet diaper cover 120 is the + Y axis direction, the direction perpendicular to the Y axis direction and directed from the lower nonwoven fabric 122A to the upper nonwoven fabric 122B is the + Z axis direction, A direction perpendicular to the Y-axis direction and the Z-axis direction will be described as the X-axis direction.

  The pet diaper cover 120 is mainly composed of two nonwoven fabrics, a lower nonwoven fabric 122A applied to the abdomen of the dog 110 and an upper nonwoven fabric 122B applied to the back of the dog 110. Further, on the outer side (non-skin contact surface side) of the lower nonwoven fabric 122A and the upper nonwoven fabric 122B, the lower leakage preventing sheet 130A and the upper leakage preventing sheet 130B are disposed so as to cover the lower nonwoven fabric 122A and the upper nonwoven fabric 122B, respectively. .

  The lower nonwoven fabric 122A and the upper nonwoven fabric 122B are formed of the same material as the front body nonwoven fabric 22A and the back body nonwoven fabric 22B. The pet diaper cover 120 is integrally formed, for example, by thermally welding the lower nonwoven fabric 122 </ b> A and the upper nonwoven fabric 122 </ b> B to each other on the side portions 139 and the rear portion 138 of the dog 110.

  The lower leakage prevention sheet 130 </ b> A and the upper leakage prevention sheet 130 </ b> B are formed of the same material as that of the leakage prevention sheet 30. Further, since the lower leak-proof sheet 130A and the upper leak-proof sheet 130B are not as air-permeable as the leak-proof sheet 30, a through hole 32 for ventilation may be provided. FIG. 7A shows an example in which through holes 32 for ventilation are formed around both sides 139 of the lower leak-proof sheet 130A and around the opening 129 for the rear foot.

  FIG. 7B is a plan view of the lower nonwoven fabric 122A. In the lower nonwoven fabric 122A shown in FIG. 7B, the lower leak-proof sheet 130A is arranged on the surface on the −Z axis side. Moreover, in FIG.7 (b), the position of the through-hole 32 which overlaps with the lower nonwoven fabric 122A is shown by the dotted line. Regions 139a that are heat-welded to the upper nonwoven fabric 122B are formed on both side surfaces of the lower nonwoven fabric 122A on the + X and −X axis sides. The region 139 a overlaps both sides 139 of the dog 110 when the pet diaper cover 120 is attached to the dog 110.

  At the end of the lower nonwoven fabric 122A on the −Y-axis side, a region 138a that is a region thermally bonded to the upper nonwoven fabric 122B is formed. The region 138 a overlaps the rear portion 138 of the dog 110 when the pet diaper cover 120 is attached to the dog 110.

  In the lower nonwoven fabric 122A, the + X-axis side on the -Y-axis side and the -X-axis side corner on the -Y-axis side are cut into a curved shape inside the lower nonwoven fabric 122A. The cut 129 a formed in this way forms a part of the opening 129 for taking out the rear foot 112 of the dog 110 from the pet diaper cover 120.

  FIG. 7C is a plan view of the upper nonwoven fabric 122B. In the upper nonwoven fabric 122B shown in FIG. 7C, the upper leak-proof sheet 130B is disposed on the surface on the + Z-axis side. Regions 139b that are heat-welded to the lower nonwoven fabric 122A are formed on both side surfaces of the upper nonwoven fabric 122B on the + X and −X axis sides. Further, a region 138b, which is a region thermally bonded to the lower nonwoven fabric 122A, is formed at the end of the upper nonwoven fabric 122B on the -Y axis side. In the pet diaper cover 120, the region 139a of the lower nonwoven fabric 122A and the region 139b of the upper nonwoven fabric 122B are overlapped with each other, and the region 138a of the lower nonwoven fabric 122A and the region 138b of the upper nonwoven fabric 122B are overlapped with each other and thermally welded. It is formed by.

  In the upper nonwoven fabric 122B, cuts 129b are formed in the corners of the + X axis side on the −Y axis side and the −X axis side on the −Y axis side so that the hind paw 112 of the dog 110 is taken out from the diaper cover 120 for pets. . The cut 129b is formed by cutting in a curved shape inside the upper nonwoven fabric 122B. The amount of cut 129b cut into upper nonwoven fabric 122B is less than the amount of cut 129a of lower nonwoven fabric 122A cut into lower nonwoven fabric 122A.

  The upper nonwoven fabric 122 </ b> B is provided with a slit 128 b for taking out the tail 111 of the dog 110 from the pet diaper cover 120. The position of the tail of the dog has individual differences depending on the breed of the dog and the like. However, by forming the opening 128 for the tail 111 in a slit shape, it is possible to cope with the individual difference in the position of the dog's tail.

  FIG. 8 is a diagram of the pet diaper cover 120 viewed from the + Y-axis side in the −Y-axis direction. The pet diaper cover 120 is formed by thermally welding the regions 139a and 138a of the lower nonwoven fabric 122A and the regions 139b and 138b of the upper nonwoven fabric 122B. Therefore, the pet diaper cover 120 is formed with a heat-welded area HA that is a heat-welded area. The pet diaper cover 120 is formed with four openings: a trunk opening 127, a tail opening 128, and a pair of rear leg openings 129.

  In the diaper cover 120 for pets, the water-soluble pad 150 is disposed between the pair of rear leg openings 129 and from the upper nonwoven fabric 122B to the lower nonwoven fabric 122A. The water-soluble pad 150 is formed of the same material as that of the water-soluble pad 50 (see FIG. 5), and notches 51 and 52 and perforations 53 and 54 similar to the water-soluble pad 50 are formed. On the other hand, the water-soluble pad 150 is formed in a different size and shape from the water-soluble pad 50. The size and shape of the water-soluble pad 150 are adjusted according to the internal shape of the pet diaper cover 120 and the torso shape of the dog 110. The water-soluble pad 150 is formed in a shape and size that covers the abdomen and the rear part 138 of the dog 110. Thereby, urine leakage etc. can be prevented.

  Similar to the water-soluble pad 50, an adhesive tape AT is disposed on the water-soluble pad 150. Thereby, the water-soluble pad 150 can be freely arrange | positioned in the arbitrary positions inside the diaper cover 120 for pets.

  A conventional pet diaper cover is formed in a single cloth shape, and is wound around the dog's abdomen and rear part and is attached to the dog by being fixed with Velcro (registered trademark) or the like. However, the manufacturing cost of the pet diaper cover has been increased because the function for attaching the magic tape or the like has to be disposed on the pet diaper cover. In addition, the shape of the trunk, the position of the tail, and the like differ depending on the type of dog. In the conventional diaper cover for pets, since it is formed in a shape with a space so as to be able to match this difference, urine leakage or the like was liable to occur.

  The pet diaper cover 120 can be attached to a dog without using a function for attaching a magic tape or the like by using a nonwoven fabric made of a material having elastic expansion and contraction performance as a base material. Moreover, manufacture of the diaper cover 120 for pets is easy by using the nonwoven fabric which can be heat-welded. Therefore, the pet diaper cover 120 can be manufactured at a lower cost than the conventional pet diaper cover.

  Moreover, the pet diaper cover 120 can be attached to the dog so as to fit the dog's body by having elastic stretchability. Thereby, it becomes easy to arrange | position the water-soluble pad 150 so that it may fit in the urination part of a dog, and urine leakage etc. can be prevented.

  On the other hand, in the pet diaper cover, since the position and size of the tail of the dog differ depending on the dog breed and the like, it is difficult to provide a tail opening to match each individual. Therefore, a large slit may be formed as an opening for the tail so that any individual can have a tail. However, when an opening such as a slit is provided in a conventional pet diaper cover, the opening is too wide and may cause urine leakage. On the other hand, in the diaper cover 120 for pets, the slit is not unnecessarily widened even if the slit is formed by being attached so as to fit the dog with elastic expansion and contraction performance. Therefore, urine leakage and the like can be prevented.

  Although the pet diaper cover 120 has been described as a pet diaper cover for dogs, it may be used as a pet diaper cover for other pets such as cats.

  As described above, the optimal embodiment of the present invention has been described in detail. However, as will be apparent to those skilled in the art, the present invention can be implemented with various modifications and variations within the technical scope thereof.

  For example, in the tail opening 128, a perforation is formed instead of a slit, and the tail opening 128 is formed by cutting the perforation according to the position of the tail of each individual dog. You may make it possible.

  Further, in the pet diaper cover 120, each of the opening 128 for the tail and the opening 129 for the rear foot may be formed as a plurality of slits. By using a slit at a position suitable for each dog's body shape, a pet diaper cover can be fitted to fit the dog more in accordance with the distance between the hind legs of the dog, the size of the hind legs, and the like. Thereby, the stress of the dog by the malfunction of mounting | wearing with the diaper cover for pets can be reduced. In addition, since the pet diaper cover has an elastic expansion and contraction performance, the size of each opening can be minimized, so that it is easy to prevent urine leakage and the like. Furthermore, since the slit which is not used does not become a large opening due to the elastic expansion and contraction of the nonwoven fabric, urine leakage or the like is less likely to occur from the slit which is not used.

20 ... Diaper cover 22 ... Non-woven fabric (22A ... Non-woven fabric on the front body, 22B ... Non-woven fabric on the back body)
27 ... Opening 29 for the waist ... Opening 30 of a pair of legs ... Leak-proof sheet (30A ... front body leak-proof sheet, 30B ... back body leak-proof sheet)
32 ... Ventilation through-hole 38 ... Crotch part 39 ... Both side parts 50, 150 ... Water-soluble pad 51, 52 ... Cut part 53, 54 ... Perforation 61 ... Absorbent paper layer 63 ... Mixed layer 65 ... Staple / rayon cotton layer 67 ... Waterproof film 69 ... Cover sheet 92 ... High pressure water cutting device 94 ... Embossing roll 96 ... Anvil roll 110 ... Dog 111 ... Tail 112 ... Rear foot 120 ... Pet diaper cover 122A ... Lower nonwoven fabric 122B ... Upper nonwoven fabric 127 ... Body Opening 128 of the tail 128b ... Slit 129 ... Opening 129a and 129b for the rear foot ... Cut 130A ... Lower leakage prevention sheet 130B ... Upper leakage prevention sheet 138 ... Rear part 139 of the dog 110 ... Both sides of the dog 110 Part AT ... Adhesive tape HA ... Thermal welding area

Claims (7)

A pants-type diaper cover with a removable water absorbent pad,
Two non-woven fabric sheets of elastic stretchable material that can be heat welded;
Each of the two non-woven fabric sheets, and two leak-proof sheets made of a synthetic resin film that can be thermally welded, and
A structure in which the two nonwoven fabric sheets and the two leak-proof sheets are welded by heat to the crotch part and both side parts of the pant-type diaper cover to form a waist opening and a pair of left and right leg openings. And
A pants-type diaper cover in which elastic elastic rubber does not exist in the opening of the waist. The two nonwoven fabric sheets are a nonwoven fabric sheet of the front body and a nonwoven fabric sheet of the back body,
The underpants type diaper cover according to claim 1, wherein the elastic stretch of the back nonwoven fabric sheet is larger than that of the front nonwoven fabric sheet.   The underpants type diaper cover according to claim 1 or 2, wherein a through hole for ventilation is formed along the both side portions. An exchangeable water-absorbent pad used for the pant-type diaper cover according to any one of claims 1 to 3,
A water-absorbent paper layer made of water-soluble water-absorbent paper stacked in multiple layers;
A mixed layer of water-absorbing ground pulp and water-soluble polymer, disposed on the water-absorbing paper layer;
A staple / rayon cotton layer that covers the mixed layer from under the water-absorbing paper layer, and that makes the water-absorbing paper layer and the mixed layer feel comfortable;
A water-soluble waterproof film disposed from the bottom to the side of the staple / rayon cotton layer and having water-solubility and temporary water resistance;
A water-soluble covering sheet that covers the entirety so as to accommodate the water-absorbing paper layer, the mixed layer, the staple / rayon cotton layer, and the water-soluble waterproof film,
Water-absorbing pad that does not use water-insoluble materials.   The water-absorbent pad according to claim 4, further comprising a water-soluble adhesive tape that adheres to the nonwoven fabric sheet of the pants-type diaper cover on the water-soluble waterproof film side and outside the cover sheet. The water absorbent pad has a rectangular shape having a short side and a long side when viewed in plan,
The water absorbing pad according to claim 4 or 5, wherein a first cut portion cut into the short side and a perforation extending from the first cut portion to facilitate cutting are formed. The water absorbent pad has a rectangular shape having a short side and a long side when viewed in plan,
The water absorption as described in any one of Claims 4-6 in which the 2nd cut part cut | disconnected in the said long side and the perforation which extends from this 2nd cut part and makes it easy to cut | disconnect is formed. pad.