Buckling type paper diaper incapable of being separated from front and back

Abstract

The utility model discloses a buckling type paper diaper (100) without separating a front part from a rear part. The buckling type paper diaper (100) is at least provided with a front part (110), a rear part (120) and a crotch area (130), wherein the crotch area (130) is connected to the front part (110) and the rear part (120), and an absorption core (150) is arranged in the crotch area (130). Wherein they have a single ear-like part (22) with a wrapping portion (22A) and a first fastening portion (22B) and a second fastening portion (171) and have substantially the same overall dimensions and they are arranged symmetrically along a longitudinal centerline L and a transverse fold line T. Wherein the second fastening portion (171) of the front panel (110) and the second fastening portion (171) of the back panel (120) are arranged substantially symmetrically with respect to the transverse fold line (T) to allow the ear-like member (22) on the other side to engage correspondingly with the second fastening portion (171) when the ear-like member (22) on one side is engaged to the second fastening portion (171).

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of disposable sanitary products, and particularly to a snap type paper diaper without distinguishing front and back waistline pieces. BACKGROUND

[0002] The snap type paper diaper is not only an indispensable product in the daily life of infants and young children, but also suitable for the daily life of adult users with specific needs. It not only provides a comfortable wearing feeling, but also effectively absorbs the excretion in the body of infants and young children and adult users, keeping the private parts of infants and young children and adult users dry.

[0003] In order to completely fit the paper diaper to the waist and abdomen of infants or other adult wearers, an ear sticker is usually arranged on each side of the waistline edge of the paper diaper, especially the back waistline piece. When using, the back waistline piece of the paper diaper is first wrapped around the back waist of the infant or other adult wearer, then the crotch piece and the front waistline piece of the paper diaper are passed through the crotch of the infant or adult user, the front waistline piece of the paper diaper is unfolded and attached to the front waist of the wearer, and finally the ear stickers on both sides of the back waistline piece of the paper diaper are adhered to the adhesive parts of the front waistline piece.

[0004] However, the ear stickers usually arranged on both sides of the back waistline piece also bring inconvenience to the wearer. On the one hand, the replacement of the paper diaper of infants is usually completed with the help of their caregivers such as parents, relatives or staff of childcare institutions. In emergency or busy situations, it often happens that the caregiver of the infant cannot quickly identify the front waistline piece or the back waistline piece of the paper diaper, resulting in the misplacement of the front waistline piece or the back waistline piece of the paper diaper. Therefore, the paper diaper is wrapped in reverse around the waist and crotch of the infant, and the ear stickers on both sides of the back waistline piece of the paper diaper placed on the front waistline part of the infant are used to adhere to the adhesive parts of the front waistline piece of the paper diaper located on the back waistline part of the infant. Therefore, the existing ear sticker design not only makes the wearing of the paper diaper inconvenient, but also delays the wearing operation time and cannot achieve quick protection. On the other hand, due to the different size designs of the front waistline piece and the back waistline part of the paper diaper, the leakage of the excretion in the body of the wearer is further caused. This situation also occurs when the paper diaper is used by adult users.

[0005] To address the aforementioned technical problems, Chinese invention patent CN 108430415 A discloses an absorbent article with an offset front waistband and an offset back waistband. On one hand, the center line of the back waistband is offset to the right relative to the crotch center line of the diaper, and a locking part is provided at the right end of the back waistband, while a connecting part is provided at the left end. On the other hand, the length of the left front waistband portion (located to the left of the crotch center line) is greater than the length of the right front waistband portion (located to the right of the crotch center line), and the left end of the left front waistband portion is aligned with the left end of the back waistband portion. Furthermore, the length of the right front waistband portion is less than the length of the right side of the back waistband portion. Therefore, by designing the back waistband portion offset to the right relative to the crotch center line and the front waistband portion offset to the left relative to the crotch center line, the diaper can be fitted more tightly to the wearer's body. However, the different sizes of the front and back waistbands, and the deliberately cut right leg circumference larger than the left, create inconveniences in design and manufacturing. In other words, designers and manufacturers must create different front and back waistband patterns for different needs, such as adults of different body types or growing infants, and develop different cutting or trimming procedures. Furthermore, during manufacturing, operational errors can lead to misinstallation of the front and back waistbands relative to the crotch area, increasing the scrap rate and costs. Moreover, this method of adjusting the fit of the absorbent material to the wearer's body by tightening the right back waistband's locking mechanism on one side can potentially cause skin damage, especially to the right crotch area, in adult wearers and infants due to excessive unidirectional force.

[0006] Another utility model patent, authorized by CN 216777377 U, considers a diaper suitable for both boys and girls. This patent uses symmetrically arranged semi-circular pockets at both ends of the diaper body to allow for front-to-back wearing, making it convenient for infants and easy for parents to use, eliminating concerns about incorrect wearing. Furthermore, the solution provided by this patent overcomes the problem of skin damage to the right groin area caused by the unidirectional tightening of the right back waistband. However, as can be seen from the specification and accompanying drawings, the adhesive used is still entirely located on the front or back waistband of the diaper body. This still results in the possibility of misplacement of the front or back waistband, as seen in existing diapers, causing the diaper to wrap backwards around the infant's waist and crotch, and the ear flaps on both sides of the back waistband, which are placed on the front waistband, to stick to the adhesive portion of the front waistband located on the back waistband. This continues to cause inconvenience in wearing diapers, delays the wearing process, and fails to provide quick protection. This defect is especially noticeable in dark or poorly oriented environments. Utility Model Content

[0007] Therefore, the objective of this invention is to overcome the shortcomings of existing diapers, such as inconvenience in wearing them, delay in the wearing process, inability to provide rapid protection, and the inadequacy of groin skin damage caused by adjusting the fit of the diaper to the wearer's body on one side.

[0008] To accomplish the above tasks, this utility model provides a snap-on diaper without a front or back panel, which has at least a front panel, a back panel, and a crotch area connected to the front and back panels and containing an absorbent core. Both the front and back panels have a single ear-shaped component with a wrapping portion and a first fastening portion, as well as a second fastening portion. The front piece and the rear piece have substantially the same external dimensions, and the front piece, the rear piece, and the crotch area are symmetrically arranged along the longitudinal centerline and the transverse fold line. A single ear-shaped component of the front piece is arranged on the front waist side edge of the front piece, and a single ear-shaped component of the rear piece is arranged on the rear waist side edge of the rear piece. The single ear-shaped components on the front piece and the single ear-shaped components on the rear piece have substantially the same spacing relative to the longitudinal centerline and the transverse fold line, respectively. The single ear-shaped component on the front waist side edge of the front piece and the single ear-shaped component on the rear waist side edge of the rear piece are arranged on different sides about the longitudinal centerline. The second fastening portion of the front piece and the second fastening portion of the rear piece are substantially symmetrically arranged relative to the transverse fold line, allowing a single ear-shaped component of the rear piece on the other side to correspondingly engage with the second fastening portion of the front piece when a single ear-shaped component of the front piece on one side engages with the second fastening portion of the rear piece.

[0009] Unlike existing designs that place ear-shaped components, such as ear loops, on the back panel and the fastening part on the front panel, creating a directional operational constraint, this invention arranges the ear-shaped components and the fastening part symmetrically about the longitudinal and transverse center lines on the front and back panels, respectively, to minimize the directional operational constraint of the snap-on diaper. Therefore, the snap-on diaper of this invention eliminates the need to consider the front-to-back operational direction during use, providing significant ease of use, especially in dark or low-visibility environments.

[0010] In a non-limiting embodiment of the present invention, the second fastening portion of the front piece is arranged at a predetermined distance from the longitudinal center line on the same side as the ear-shaped member of the rear piece, and the second fastening portion of the rear piece is also arranged at a predetermined distance from the longitudinal center line on the same side as the ear-shaped member of the front piece.

[0011] In a non-limiting embodiment of the present invention, the front piece and the back piece further include a waist leak-proof bag that opens toward the crotch area. The edge of the waist leak-proof bag away from the crotch area along the longitudinal center line L is largely overlapped with the front waist edge of the front piece or the back waist edge of the back piece, and the edges of the waist leak-proof bag along the transverse fold line T are partially joined to the ear-shaped component.

[0012] In a non-limiting embodiment of the present invention, the absorbent core further comprises an absorbent core isolation layer, which extends from both lateral sides of the absorbent core to the two side edges of the crotch area.

[0013] In a non-limiting embodiment of the present invention, the absorbent core has at least a first absorbent portion and a second absorbent portion, wherein the first absorbent portion is located in the crotch area where the longitudinal center line L and the transverse fold line T intersect, and the absorption rate of the first absorbent portion is approximately twice the absorption rate of the second absorbent portion.

[0014] In one non-limiting embodiment of the present invention, the wrapping portion of the ear-shaped component is formed by laminating a single layer or multiple layers of nonwoven sheet material.

[0015] Specifically, one layer of nonwoven sheet has a uniformly distributed raised pattern, and there are equidistantly distributed elastomers or non-elastic bodies between it and another nonwoven sheet.

[0016] In a non-limiting embodiment of the present invention, the second fastening part further has a plurality of flanges, and the second fastening part and the first fastening part of the ear-shaped component are complementary adhesive structures.

[0017] In a non-limiting embodiment according to the present invention, a single ear-shaped member disposed on the front waist side edge of the front piece has a gripping portion extending away from the front piece, wherein the gripping portion disposed on the front piece extends obliquely relative to the front waist edge, forming an angle of 12°. o Up to 15 o Within the range; a single ear-shaped member arranged on the rear waist side edge of the rear piece has a gripping portion extending away from the rear piece; wherein the gripping portion arranged on the rear piece extends obliquely relative to the rear waist edge, forming an angle of 12°. o Up to 15 o Within the range.

[0018] In one non-limiting embodiment of the present invention, the second fastening portion disposed on the front piece extends obliquely relative to the front waistline edge, or the second fastening portion disposed on the rear piece extends obliquely relative to the rear waistline edge.

[0019] In view of this, the present invention provides a diaper that does not require distinguishing between front and back waistbands, making diaper wearing more convenient and quick, and thereby at least partially overcoming the disadvantages of skin damage and leakage in the prior art. Attached Figure Description

[0020] Figure 1 A top view of a prior art snap-on diaper in its open, flat state is shown in a line drawing, showing the inner surface of the diaper facing the body when it is not closed and the ear flap construction according to the prior art.

[0021] Figure 2 An embodiment of the laminated ear flaps of a snap-on diaper without front or back separation according to the present invention is shown in cross-sectional view.

[0022] Figure 3 Another embodiment of the laminated ear flaps of the snap-on diaper without front or back separation according to the present invention is shown in cross-sectional view;

[0023] Figure 4 A top view of the snap-on diaper without front or back separation according to the present invention in its flat, open state is shown in plan view, wherein a first embodiment of the snap-on diaper without front or back separation is specifically shown.

[0024] Figure 5 A top view of the snap-on diaper without front or back separation according to the present invention in its flat, open state is shown in plan view, wherein a second embodiment of the snap-on diaper without front or back separation is specifically shown.

[0025] Figure 6 A top view of the snap-on diaper without front or back separation according to the present invention in its flat, open state is shown in plan view, wherein a third embodiment of the snap-on diaper without front or back separation is specifically shown.

[0026] Figure 7 A top view of the snap-on diaper without front or back separation according to the present invention in its flat, open state is shown in plan view, with a fourth embodiment of the snap-on diaper without front or back separation specifically shown.

[0027] Reference numerals used repeatedly in this specification and drawings are intended to indicate the same or similar elements of this utility model.

[0028] Reference signs

[0029] 100-Snap-on Diapers

[0030] 110-Front panel 111-Front waistline edge

[0031] 120-rear film

[0032] 121 - Lower back edge; 122 - Ear loops; 122A - Wrapper; 122B - Ear loop gripping part

[0033] 123 - Lower back side edge 124 - Lower back elastic band

[0034] 22-Ear-shaped component 22A-Wrapping part 22B-First fastening part 22C-Connecting part 22D-Pulling part 22A'-First nonwoven sheet 22A''-Second nonwoven sheet 22A'''-Third nonwoven sheet

[0035] h1 - First altitude; h2 - Second altitude; h3 - Third altitude

[0036] 25' - Upper edge of the gripping area; 25' - Lower edge of the gripping area

[0037] T - Horizontal fold line; T1 - First horizontal line

[0038] X - Horizontal distance; Y - Vertical distance; X1 - First distance; X2 - Second distance

[0039] L - Longitudinal center line; L1 - Front piece length; L2 - Back piece length; L3 - Crotch area length

[0040] 130-Crotch area 131-Side edge 132-Core area 133-Absorbing core isolation layer

[0041] 140 - Lining layer; 150 - Absorbent core; 151 - Leg clamps; 152 - Side barrier; 160 - Outer cover layer

[0042] 161-Front waist brace; 162-Urine indicator; 163-Bottom membrane layer; 164-Auxiliary fasteners

[0043] 171-Second fastening part; 180-Waist leak-proof bag

[0044] α - Angle between the edges of the ear; β - Angle between the second fixing parts Detailed Implementation

[0045] Those skilled in the art will understand that the following detailed description of embodiments is merely an illustration of exemplary models and is not intended to limit the broader aspects of this disclosure.

[0046] Definitions of terms

[0047] Regarding absorbent articles, "disposable" means absorbent articles that are not typically intended to be washed or otherwise restored or reused as absorbent articles (i.e., they are intended to be discarded after a single use and are preferably recyclable, compostable, or in other words, disposed of in an environmentally compatible manner). Disposable absorbent articles typically include an adhesive that is positioned between layers and / or elements to hold the article together (e.g., earpieces, side pieces, and straps are bonded to a base structure via adhesive, and the layers of earpieces, side pieces, straps, and base structure are bonded together using adhesive). Alternatively, thermal bonding and / or ultrasonic bonding may be used in conjunction with or instead of adhesive.

[0048] "Pants" (also known as "training pants," "pre-closed diapers," "diaper pants," "diapers," and "over-the-leg diapers") refers herein to a disposable absorbent article designed for infant wearers and having a continuous perimeter waist opening and continuous perimeter leg openings. Pants may be configured to have a continuous or closed waist opening and two continuous, symmetrically arranged closed leg openings before the article is put on the wearer. Pants may be pre-formed or pre-fastened using various techniques, including but not limited to using any re-fastening closure and / or permanent closure (e.g., seams, thermal bonding, ultrasonic welding, adhesives, glue bonding, mechanical fasteners, etc.) to join the parts of the article together. Pants may be pre-formed at any location around the waist area of ​​the article (e.g., side-fastened or seamed, front waist-fastened or seamed, back waist-fastened or seamed).

[0049] As used in this invention, the term "nonwoven" or "non-woven fabric" generally refers to a web with an interlayered structure of individual fibers or yarns, but not in a manner identifiable as a knitted fabric. Suitable examples of nonwoven or non-woven fabrics or webs include, but are not limited to, meltblown webs, spunbond webs, bonded-carded webs, air-blown webs, co-formed webs, and hydroentangled webs.

[0050] As used herein, the term "spunbond" refers to a process in which molten thermoplastic material is extruded in filament form from multiple, typically circular, fine capillary pores of a spinneret, and then the diameter of the extruded filament is rapidly reduced to form fine fibers using processes such as those described in U.S. Patents US4340563 to Appel et al., US3692618 to Dorschner et al., US3802817 to Matsuki et al., US3338992 and US3341394 to Kinney, US3502538 to Levy, US3502763 to Hartman, and US3542615 to Dobo et al. Spunbond fibers are typically continuous and have a diameter greater than 7 μm (micrometers), specifically, a diameter between approximately 10 and 30 μm. Spunbond fibers are generally non-sticky when placed on a collecting surface.

[0051] As used herein, the term "meltblown" refers to a process in which fibers are produced by extruding molten thermoplastic material in the form of filaments or strands from multiple typically circular die capillaries into a high-speed airflow (e.g., an airflow) that refines the molten thermoplastic material to a diameter reduced to that of microfibers. The meltblown fibers are then carried by the high-speed airflow and deposited onto a collection surface to form a randomly distributed meltblown fiber web. Such a process is disclosed, for example, in Butin's U.S. Patent US3,849,241. Meltblown fibers can be continuous or discontinuous and are typically microfibers with a diameter less than 10 micrometers.

[0052] The term "hot air" as used in this article refers to the following thermal bonding process, which uses bicomponent fibers with a parallel or core-sheath structure. After being carded into a web, the composite fibers are heated with hot air, causing the PE in the composite fibers to melt. The fibers then overlap and, after cooling, become a nonwoven material with certain strength and tensile properties. Because no pressure is applied during processing, hot-air nonwoven materials have far superior elasticity and bulkiness compared to nonwoven materials made by other processes. They are soft and fluffy to the touch, providing a comfortable feel for the user.

[0053] "Proximal" and "distal" refer to the position of an element that is relatively close to or far from the longitudinal or lateral centerline of the structure, respectively (for example, relative to the same longitudinal axis, the proximal edge of a longitudinally extending element is closer to the longitudinal axis than the distal edge of the same element).

[0054] "Facing the body" and "facing the clothing" refer to the relative positions of components or the relative positions of the surfaces of a component or group of components, respectively. "Facing the body" means that during wear, a component or surface is closer to the wearer than some other components or surfaces. "Facing the clothing" means that during wear, a component or surface is further away from the wearer than some other components or surfaces (i.e., the component or surface is closer to the wearer's clothing, which may be worn over a disposable absorbent material).

[0055] As used herein, the terms "stretchable" or "extensible" generally refer to a material that, when stretched or elongated in the direction of force, represents at least about 25%, in some embodiments about 50%, and in some embodiments at least about 75% of its relaxed length or width. Stretchable materials do not necessarily have restorative properties. For example, the material of an elastomer is a stretchable material with restorative properties. Meltblown fiber webs can be stretchable but do not have restorative properties and are therefore stretchable but inelastic materials.

[0056] As used herein, the terms "elastomer" or "elastic" generally refer to a material that, by applying a tensile force, is stretched in at least one direction (e.g., the MD direction), and by releasing the tensile force, shrinks / recovers to approximately its original size. For example, a stretched material may have an elongation at least about 50% longer than its relaxed, unstretched length, and by releasing the tensile force, it may recover to a length within at least 50% of its elongated length. A hypothetical example could be a 1-inch sample of material that can be stretched to 1.50 inches and, by releasing the tensile force, will recover to a length not exceeding 1.25 inches. Ideally, the material shrinks or recovers at least 50%, and even more ideally, at least 80% of the elongated length.

[0057] As used herein, the term "bonding" refers to the joining, adhesion, connection, attachment, etc., of two elements. Two elements are considered to be bonded together when they are joined, adhered, connected, attached, etc., directly or indirectly to each other, such as when bonded to an intermediate element. Bonding can be performed via, for example, adhesives, pressure bonding, thermal bonding, ultrasonic bonding, splicing, stitching, and / or welding.

[0058] As used herein, the term "elastic member" includes elongated materials that are elastic, such as, but not limited to, elastic rubber bands and elastic fiber nonwoven fabrics. Elastic rubber bands, for example, can be made from spandex using a spinning process on a warp beam.

[0059] The term "opening" refers to the initial separation of opposite waist areas before or during the wearing of an article, thus not forming a continuous waist and leg opening.

[0060] The term "closure" refers to the permanent or repeatable secure joining of opposing waist areas during encapsulation to form a continuous waist opening and leg opening.

[0061] Snap-on diaper

[0062] First, the basic structure of the snap-on diaper of this embodiment will be explained with reference to the accompanying drawings. Figure 1 A top plan view of a first embodiment of a snap-on diaper known in the prior art is shown in a line drawing, illustrating its side facing the clothing. In this document, in Figure 1 The snap-on diaper 100 shown is a disposable absorbent product designed to be placed against or close to the wearer's body to absorb and contain various excretions from the body. Figure 1 As preferably shown, in the longitudinal Y direction, the snap-on diaper 100 has a front piece 110, a crotch area 130 and a back piece 120 in sequence, wherein the crotch area 130 extends between the front piece 110 and the back piece 120 and connects the front piece 110 and the back piece 120.

[0063] In the thickness direction of the snap-on diaper 100, the diaper 100 is along... Figure 1 The paper-side-inward direction of the diaper may sequentially include a lining layer facing the body, an outer cover layer 160 facing the clothing, and an absorbent core 150 located between the lining layer facing the body and the outer cover layer 160 facing the clothing. Here, the lining layer facing the body, the outer cover layer 160 facing the clothing, and the absorbent core 150 sandwiched between them together define the absorbent assembly of the snap-on diaper 100. The absorbent assembly can be any suitable shape, including, for example, […]. Figure 1 The shape is roughly I-shaped as shown.

[0064] Because this snap-on diaper 100 is a thin product, Figure 1 In the two-dimensional line drawing shown, the front piece 110 refers to the portion of the diaper 100 that is approximately in front of the wearer when the infant or adult user is wearing it. The back piece 120 refers to the portion of the diaper 100 that is approximately behind the wearer when the infant or adult user is wearing it, and the crotch area 130 refers to the portion that is approximately between the wearer's legs when the infant or adult user is wearing it.

[0065] exist Figure 1In the illustrated embodiment, the back piece 120 includes a straight back waist edge 121 and the front piece 110 includes a straight front waist edge 111 and a generally straight back waist side edge 123. Here, a "straight" edge means an edge that is substantially free of curves, bends, angles, notches, or irregular portions. The body-facing lining layer of the snap-on diaper 100 defines a surface facing the wearer's body, which is intended to be worn adjacent to and in direct contact with the wearer's body. The body-facing lining layer is suitably compliant, soft, and non-irritating to the wearer's skin. The body-facing lining layer is less hydrophilic than the absorbent core 150 and its porosity is sufficient to allow liquid permeation. The body-facing lining layer can be made from a variety of suitable web materials, such as porous foam, honeycomb foam, porous plastic film, natural fibers (e.g., wood fibers or cotton fibers), synthetic fibers (e.g., polyester or polypropylene fibers), or a combination of natural and synthetic fibers. The lining layer facing the body is suitably designed to isolate the wearer's skin from the liquids and moisture held by the absorbent core 150.

[0066] exist Figure 1 The diagram also schematically illustrates an outer cover layer 160 of the diaper 100 defining a surface facing the clothing side, intended to be worn adjacent to the wearer's clothing. In a suitable embodiment, the outer cover layer 160 includes a woven or nonwoven fiber web layer that is wholly or partially constructed or treated to impart a desired degree of liquid impermeability to selected areas of the outer cover layer 160 adjacent to or near the absorbent core 150. A bottom film layer 163 is also provided between the outer cover layer 160 and the absorbent core 150, which may include a microporous "breathable" material that allows vapor to escape from the diaper 100 while still preventing liquid leakage. For example, the bottom film layer 163 may be composed of a microporous polymer membrane or nonwoven fabric coated or otherwise treated to impart a desired degree of liquid impermeability. The outer cover layer 160 may also be adjacent to the bottom film layer 163, including an embossed or otherwise patterned layer, to convey visual cues or information to the wearer or caregiver. Preferably, the bottom film layer 163 located between the outer cover layer 160 and the absorbent core 150 can be a thin layer made of a polyethylene resin carrier with an appropriate amount of calcium carbonate added. Here, the visual pattern layer is preferably a pattern that infants and adult users like or a business logo. Preferably, the bottom film layer 163 also has a urine indicator 162 that can convey urine to caregivers or adult users.

[0067] The body-facing lining layer and the clothing-facing outer cover layer 160 are typically joined to the absorbent core 150 located between them in a face-to-face relationship. The body-facing lining layer and the clothing-facing outer cover layer 160 may be joined to each other around the outer periphery of the diaper 100 in any manner known to those skilled in the art, such as adhesive bonding, ultrasonic bonding, thermal bonding, and combinations thereof.

[0068] As described above, the absorbent core 150 is disposed between the lining layer facing the body and the outer cover layer 160 facing the clothing. The absorbent core 150 is generally conformal and capable of absorbing and retaining liquid bodily waste. The absorbent core 150 may include superabsorbent materials, short fibers, adhesive fibers, and combinations thereof, as known in the art. The absorbent core 150 may have any of a variety of shapes and sizes. For example, a composite absorbent core 150 may be rectangular, I-shaped, or T-shaped. The size and absorbency of the absorbent core 150 should be compatible with the size of the intended wearer and the liquid load imposed by the intended use of the diaper.

[0069] In a suitable embodiment, the diaper 100 may include a flow portion (not shown) disposed between the absorbent core 150 and a lining layer facing the body. The flow portion is used to quickly collect and temporarily retain liquid expelled by the wearer before releasing the liquid back into the absorbent core 150. A variety of woven and nonwoven materials can be used to construct the flow portion. For example, the flow portion may be a spunbond or meltblown web of polyolefin fibers. The flow portion may also be a bonded combed web of natural and synthetic fibers. The flow portion may be a substantially hydrophilic material and may optionally be treated with surfactants or otherwise to impart a desired degree of wettability and hydrophilicity.

[0070] As a preferred aspect, the diaper 100 includes a pair of elastic, longitudinally extending leg cuffs 151. The leg cuffs 151, when worn by an infant, are adapted to fit around the wearer's legs and act as a physical barrier against the lateral flow of bodily waste. In a suitable embodiment, the leg cuffs 151 may be formed from a portion of the outer cover layer 160 and / or a body-facing liner extending beyond the longitudinal side of the absorbent core 150. In another suitable embodiment, the leg cuffs 151 may be formed from a separate material (e.g., stranded leg elastic members) bonded to the outer cover layer 160 and / or the body-facing liner.

[0071] The diaper 100 may also include a front waist elastic member (not shown) and / or a back waist elastic band 124. In the illustrated embodiment, for example, the diaper 100 has a back waist elastic band 124 but not a front waist elastic member. The back waist elastic band 124 is arranged to pull the diaper 100 and to hold the diaper 100 against the wearer (especially against the wearer's waist), as will be described more fully herein. Preferably, the back waist elastic band 124 may be designed with an attachment area that seals with the back panel 120 and a non-attachment area that does not seal with the back panel 120 and faces the crotch area 130, wherein the non-attachment area may be surrounded by the attachment area to form a back pocket that opens toward the crotch area 130. The back pocket is capable of holding most of the bodily excrement flowing toward the diaper 100, such as, but not limited to, feces excreted by infants.

[0072] Suitable materials for forming leg cuffs 151 and / or back waist elastic bands 124 are known to those skilled in the art. Examples of such materials are strands or strips of polymeric or elastomeric materials that adhere to the diaper 100 in a stretched position or attach to the diaper 100 when the diaper is folded, thereby imparting an elastic contractile force to the diaper. Leg cuffs 151 and / or back waist elastic bands 124 can have any configuration that provides the desired performance. Leg cuffs 151 can be generally straight or optionally curved (e.g., Figure 1 and Figure 4 (as shown), to more closely conform to the wearer's leg contours. As used herein, "elasticity," "elastomer," etc., refers to the ability of a material or composite to stretch by at least about 50% and return to at least 50% of its initial length upon relaxation.

[0073] Leg cuffs 151 and / or back waist elastic bands 124 may be attached to diaper 100 in any manner known to those skilled in the art. For example, leg cuffs 151 and / or back waist elastic bands 124 may be joined to diaper 100 by ultrasonic bonding, thermal bonding, adhesive bonding, and combinations thereof.

[0074] like Figure 1 Clearly visible, the back panel 120 of a diaper typically includes a pair of ear flaps 122. In the prior art, this pair of ear flaps 122 is symmetrically arranged about the longitudinal center line L, and the transverse center line of the ear flaps 122 is generally parallel to the transverse fold line T. The ear flaps 122 are generally located on both sides of the back waist side edge 123 and near the back waist edge 121. In a suitable embodiment according to the prior art, and as... Figure 1As shown, the ear patch 122 can be formed as a separate component and attached to the body-facing liner layer, the outer cover layer 160, or both the body-facing liner layer and the outer cover layer, as is well known in the art. In the illustrated embodiment, the ear patch 122 is attached to the body-facing surface of the body-facing liner layer such that when the diaper 100 is worn, the attached portion of the ear patch 122 is positioned between the wearer's body and the body-facing liner.

[0075] In a suitable embodiment, each of the earplugs 122 includes a wrapping element 122A and an earplug gripping portion 122B attached to the earplug. Figure 1 (As shown). Each of the packages 122A has a proximal edge, a relatively distal edge, a top edge, and a bottom edge. Figure 1 As seen, the proximal edge of each of the wrappers 122A is spaced inwardly from the corresponding back waist side edge 123 of the diaper 100, such that a portion of the wrapper overlaps with the body-facing lining layer. The portion of each of the wrappers 122A that overlaps with the body-facing lining layer is bonded (e.g., adhesive bonding, thermal bonding, thermal bonding, and both adhesive bonding) to at least the body-side lining.

[0076] exist Figure 1 In the prior art shown, the proximal and distal edges of each of the wrappers 122A are generally parallel to each other and both are straight (i.e., linear). Preferably, the length ratio of the distal edge to the proximal edge is suitably about 1:4. Further, the upper and lower edges of each of the wrappers 122A are also configured to be generally parallel to each other and straight, and are generally parallel to the rear waist edge 121 of the rear piece 120.

[0077] Preferably, but not exclusively, each wrapper 122A in the ear loops 122 can be designed as a non-elastic portion, and the ear loop gripping portion 122B can be configured to connect to the wrapper 122A. This allows the size and tightness of the waist opening of the diaper 100 in its wearing configuration to be adjusted according to the wearer's waist circumference by deformation of elements such as the back waist elastic band 124. Figure 1 As shown, the wrapping portion 122A of the ear tabs 122 located on both sides of the back piece 120, which is a non-elastic part, extends laterally outward, and each ear tab gripping portion 122B attached to the non-elastic wrapping portion 122A is configured to engage a ring member provided in the front waist area 161 of the diaper 100 in a wearing configuration, as will be described more fully herein.

[0078] like Figure 1As shown, according to the prior art, the ear patch 122 also includes an ear patch gripping portion 122B extending laterally outward from the wrapper 122A, which is used for manually gripping and manipulating the ear patch. Thus, the back piece 120 (more specifically, the ear patches 122 of the back piece) can be folded relative to the transverse fold line T and attached to the front piece 110 to define a three-dimensional wearing configuration with a waist opening and a pair of leg openings, thereby selectively placing the diaper 100 from the front piece 110 as shown by the pair of ear patch gripping portions 122B symmetrically arranged relative to the longitudinal center line L. Figure 1 The open configuration shown can be moved to a closed or worn configuration.

[0079] Corresponding to the ear loop gripping portion 122B in the rear panel, the diaper 100 also includes a front waist fastening band 161 formed as a separate component and attached to the outer surface of the diaper cover layer 160, see [link to previous section]. Figure 1 More specifically, a band (generally indicated as 161) of fastening material designed as a loop or hook is attached to the front panel 110 of the diaper. This front waist fastening band 161 includes an upper edge, a lower edge, and a pair of side edges connecting the upper and lower edges. The upper edge is spaced apart from the front waist edge 111, and the side edges are spaced apart from the corresponding side edges of the diaper 110. Thus, the ear loop gripping portions 122B provided on the non-elastic portion of the ear loops 122 and the corresponding front waist fastening band 161 are designed to be repeatedly and securely fastened together, thereby securing the diaper 100 in a detachable manner in a wearing configuration.

[0080] The earplug gripping portion 122B and the front waist fastening band 161, which can form a re-fastening engagement with each other, may include any re-fastening fastener suitable for absorbent articles, such as adhesive fasteners, bonding fasteners, mechanical fasteners, etc. In a suitable embodiment, the earplug gripping portion 122B and the front waist fastening band 161 include mechanical fastening components, such as hook and loop fasteners. Figure 1 In the embodiment shown, the earpiece gripper 122B may include a hook-shaped fastener and the front waist fastening strap 161 includes a complementary loop fastener disposed on the outer surface of the outer cover layer 160. Further preferably, as Figure 1 As shown, auxiliary fasteners 164 are added on both sides of the front waist fastening band 161 symmetrically relative to the longitudinal center line L. When the ear-shaped gripping part 122B and the front waist fastening band 161 are fastened together, the auxiliary fasteners 164 are allowed to fasten with the wrapping part 122A designed with hooks or rings to ensure that the diaper 100 has better fit and fastness.

[0081] Snap-on diaper without distinction

[0082] Next, combine Figure 2 , Figure 3 as well as Figures 4-7This describes the design of a snap-on diaper without front or back separation according to the present invention. See also... Figure 4 The illustration shows a non-limiting embodiment of a snap-on diaper that can be worn without front or back separation according to the present invention. The snap-on diaper 100 has a front panel 110, a back panel 120, and a crotch area 130 arranged substantially symmetrically along the transverse fold line T of the snap-on diaper 100 in the longitudinal direction, and substantially symmetrically along the longitudinal center line L of the snap-on diaper 100 in the longitudinal width direction. Specifically, the front panel 110 and the back panel 120 are configured to have substantially the same dimensions. That is, the length L1 of the front piece is approximately equal to the length L2 of the back piece, and the lateral width of the front piece 110 is approximately equal to the lateral width of the back piece 120. Furthermore, the front piece 110 and the back piece 120 have the same external outline, facilitating the cutting of the front piece 110 and the back piece 120 during mass production, thereby improving the production efficiency of the snap-on diaper 100 and reducing the production time of a single snap-on diaper 100. More specifically, the crotch area 130, taking into account the general body sizes of infants and adults, is constructed with side edges 131 having approximately the same arc relative to the longitudinal center line L of the snap-on diaper 100. Preferably, the side edges 131 located on both sides of the crotch area 130 in the longitudinal width direction are also constructed with approximately the same arc relative to the lateral fold line T of the snap-on diaper 100, facilitating the design of corresponding CNC cutting programs during production, thereby achieving rapid symmetrical cutting of the crotch area 130.

[0083] In view of this, one of the important concepts of the front and back wearable diaper according to this utility model is to construct the front piece 110, back piece 120 and crotch area 130 of the snap-on diaper 100 as symmetrical sheet configurations along the longitudinal center line L and the transverse fold line T, respectively, so as to achieve rapid manufacturing and processing through simplified configuration design, thereby overcoming the aforementioned defects of the prior art and providing the basic condition for diapers to be worn without distinguishing between front and back.

[0084] In a specific embodiment of this invention, the back piece 120 generally comprises two parts: a proximal side of the back piece close to the wearer's skin and a distal side of the back piece. The proximal side of the back piece can be formed from air-permeable nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, waterproof membrane, etc. Specifically, in this invention, SMS nonwoven fabric is selected to make the proximal side of the back piece, and the skin-friendly properties of the proximal side are improved by adding polymers such as polyethylene glycol laurate and polyethylene glycol lauryl ether. The distal side of the back piece 120B is formed from air-permeable nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, waterproof membrane, etc. Specifically, in this invention, 15-25 gsm (grams per square meter) of polypropylene can be used to make the distal side of the back piece 120B.

[0085] Similarly, in a specific embodiment of this invention, the front panel 110 generally comprises two parts: a proximal side of the front panel close to the wearer's skin and a distal side of the front panel. The proximal side of the front panel can be formed from air-permeable nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, waterproof membrane, etc. Specifically, in this invention, SMS nonwoven fabric is selected to make the proximal side of the front panel, and the skin-friendly properties of the proximal side are improved by adding polymers such as polyethylene glycol laurate and polyethylene glycol lauryl ether. The distal side of the front panel is formed from air-permeable nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, waterproof membrane, etc. Specifically, in this invention, materials such as 15-25 gsm hot air or meltblown fabric can be used to make the distal side of the front panel. Furthermore, waist leak-proof bags 180, opening towards the crotch area 130, are provided at the same locations on the front proximal side of the front piece 110 and the rear proximal side of the rear piece 120 to help contain and / or absorb bodily fluids. Preferably, the edge of the waist leak-proof bag 180 away from the crotch area 130 along the longitudinal center line L coincides with the front waist edge of the front piece 110 or the rear waist edge of the rear piece 120, thereby allowing the edge of the waist leak-proof bag 180 away from the crotch area 130 to be sewn together with the front waist edge of the front piece 110 or the rear waist edge of the rear piece 120, thus preventing excessive compression and discomfort to the user. Preferably, for the same reason, the edges of the waist leak-proof bag 180 along both sides of the transverse fold line T are partially joined to the ear-shaped member 22.

[0086] Corresponding to the configuration of the front sheet 110 and the back sheet 120, the absorbent core 150 of the snap-on diaper 100 is also symmetrically arranged along the longitudinal center line L and the transverse fold line T, respectively, and the absorbent core 150 is disposed between the lining layer facing the body and the outer cover layer facing the clothing. Further, both ends of the absorbent core 150 extend along the longitudinal center line L into the proximal side of the front sheet 110 and the distal side of the back sheet, and into the proximal side and the distal side of the rear sheet 120, respectively. As described above, an additional flow portion may be provided between the absorbent core 150 and the lining layer facing the body. This flow portion is made of a hydrophilic material, such as a nonwoven fabric composed of meltblown or spunbond webs of polyolefin or polyester filaments, which includes at least adhesive fibers and structural fibers capable of being combined with the adhesive fibers. The adhesive fibers form fiber bonds at their junctions, while the interweaving of structural fibers and adhesive fibers provides a porous structure for liquid absorption in the nonwoven fabric, thereby improving the adsorption capacity of the surging portion.

[0087] Furthermore, the nonwoven fabric is optionally designed to have a basis weight of approximately 10 gsm (grams per square meter) to 110 gsm. Additionally, the flow portion covers at least a majority of the crotch area 130 of the snap-on diaper 100 in both the longitudinal and transverse directions, particularly at least completely covering the absorbent core 150, to facilitate the diffusion and release of bodily excrement, such as urine or blood, through the flow portion into the absorbent core 150. Further, to improve the absorbency of the snap-on diaper 100, a hydrophilic treatment agent may be added to the spunbond material and spunbond web included in the flow portion. This hydrophilic treatment agent may be polyethylene glycol lauryl ester, polyethylene glycol lauryl ether, or combinations thereof, to prevent excessive accumulation of liquid on the fabric surface of the diaper before absorption by the absorbent core, effectively promote the absorption of bodily excrement, and maintain the softness of the flow portion.

[0088] Preferably, the absorbent core 150 of the snap-on diaper 100 may also be provided with an absorbent core isolation layer 133. This absorbent core isolation layer 133 surrounds both sides of the absorbent core 150 of the snap-on diaper 100 and extends laterally toward both sides of the crotch area 130, ultimately integrating with the outer cover layer 160 at the side edges 131 to prevent leakage of human excrement toward the sides of the crotch area 130. Optionally, the absorbent core isolation layer 133 may also be part of the outer cover layer 160. That is, the two lateral ends of the outer cover layer 160 first surround the two side edges 131 of the crotch area 130, and then fold towards the longitudinal centerline L until they overlap below the lateral edge of the lining layer 140, forming protection at the two side edges 131 of the crotch area 130.

[0089] Preferably, the absorbent core insulating layer 133, made of woven or nonwoven fiber web, is configured to surround the two lateral sides of the crotch area 130 with a larger area of ​​soft woven or smooth nonwoven fiber web, and to form a folded structure against the wearer's leg circumference by means of the elastomeric material between the lining layer 140 and the outer cover layer 160, namely the leg cuff 151, so that the two side edges 131 of the crotch area 130 can fit more closely to the wearer's leg circumference after wearing. More preferably, the absorbent core 150 has at least a first absorbent portion and a second absorbent portion, wherein the first absorbent portion is located in the core area 132 of the crotch area 130, and the absorption rate of the first absorbent portion is approximately twice that of the second absorbent portion. Therefore, the first absorbent portion of the core area 132 of the crotch area 130 has an absorbent core with higher absorption performance. This absorbent core expands and increases in area after absorbing liquid, reducing the contractility of the core area 132 of the crotch area 130. This buffers the stress between the outer edge of the core area 132 of the crotch area 130 and the wearer's leg circumference, improving the wearer's comfort. The absorbent core isolation layers 133 located on both sides of the absorbent core 150 also have symmetry along the longitudinal centerline L and the transverse fold line T, respectively.

[0090] In one non-limiting embodiment of the present invention, according to Figure 4 As shown, an ear-shaped member 22 is provided on the right edge of the front panel 110 of the snap-on diaper 100, and an ear-shaped member 22 of the same size and shape is provided on the left edge of the back panel 120 of the snap-on diaper 100. Alternatively, ear-shaped members 22 of the same size and shape may be provided on the left edge of the front panel 110 and the right edge of the back panel 120 of the snap-on diaper 100, respectively. Those skilled in the art will understand that the outer contours of the front panel 110 with a single ear-shaped member 22 and the back panel 120 with a single ear-shaped member 22 perfectly match, thereby significantly reducing the manufacturing process of the front panel 110 and the back panel 120.

[0091] The following text will be based on Figure 4The ear-shaped component 22, located at the left edge of the back panel 120 of the snap-on diaper 100, is described in detail as an example. The ear-shaped component 22 generally comprises a wrapping portion 22A, a first fastening portion 22B, a connecting portion 22C, and a pulling portion 22D. The wrapping portion 22A forms the main body of the ear-shaped component 22, which is laterally arranged at the left end of the back panel 120 of the snap-on diaper 100 near the back waist edge 121, and is fixed to the back panel 120 by the connecting portion 22C. Optionally, the wrapping component 22A may also originate from a portion of the back panel 120 and extend from the left back waist side edge 123 of the back panel 120, thus eliminating the need to separately cut the ear-shaped component 22. Preferably, the wrapping portion 22A is configured to have an upper wrapping edge and a lower wrapping edge that are substantially parallel to the back waist edge 121 of the back piece 120. Alternatively, the upper wrapping edge of the wrapping portion 22A may be configured to extend substantially along the back waist edge 121 of the back piece 120, thereby reducing the overall cutting process of the back piece 120 during processing and facilitating the heat sealing or bonding and other sewing processes between the independent wrapping portion 22A and the back piece 120.

[0092] Specifically, the wrapping portion 22A of the independent ear-shaped component 22 is installed between the proximal side and the distal side of the rear piece, and can be first integrated with the distal side of the rear piece by means of adhesive bonding, heat sealing, or sewing, and then covered by the proximal side of the rear piece. Similarly, the wrapping portion 22A of the independent ear-shaped component 22 is installed between the proximal side and the distal side of the front piece, and can be first integrated with the distal side of the front piece by means of adhesive bonding, heat sealing, or sewing, and then covered by the proximal side of the front piece. Alternatively, the wrapping portion 22A can also be installed to the proximal side of the rear piece or to the distal side of the rear piece by means of adhesive bonding, heat sealing, or sewing.

[0093] In a specific embodiment of the present invention, the wrapping portion 22A may have a layered arrangement of flexible sheets. Specifically, see [link to specific embodiment]. Figure 2 The flexible sheet comprises at least a first nonwoven sheet 22A' and a second nonwoven sheet 22A'' located below the first nonwoven sheet 22A', wherein the second nonwoven sheet 22A'' forms a laminated structure with the first nonwoven sheet 22A' via thermal bonding or ultrasonic bonding. The first nonwoven sheet 22A' is, for example, a hot-air nonwoven sheet made of bicomponent fibers, while the second nonwoven sheet 22A'' is a hydrophobic sheet, for example composed of low denier fibers, and this hydrophobic sheet has similar or higher mechanical strength than the top layer 22A'. Specifically, the first nonwoven sheet 22A' has a thickness h1 of 0.8 to 1.2 mm and a basis weight of 18-30 gsm, and is rolled with uniformly distributed protrusions at equal intervals.

[0094] Furthermore, such as Figure 2 As shown, the thickness or second height h2 of the second nonwoven sheet 22A'' is preferably 0.2 to 0.4 mm and its basis weight is 32-50 gsm. The flexible sheet may also include a third nonwoven sheet 22A''', which may have the same bicomponent fibers as the first nonwoven sheet 22A'. Figure 3 As shown, the thickness or third height h3 of the third nonwoven sheet 22A''' is 0.8 to 1.2 mm, and its basis weight is 18-30 gsm. It forms a laminated structure with the nonwoven carrier sheet layer via heat sealing or ultrasonic bonding. The third nonwoven sheet 22A''' can also be rolled to form a 3D product with uniformly distributed raised patterns at equal intervals. These 3D raised parts or patterns on the surface are visible and provide a "soft and fluffy" feel to the touch.

[0095] Specifically, the wrapping portion 22A may also be filled or provided with an elastomer, such as, but not limited to, an elastic film or elastic yarn, between the first nonwoven sheet 22A' and the second nonwoven sheet 22A'' and / or between the second nonwoven sheet 22A'' and the third nonwoven sheet 22A'''. Preferably, the first elastomer is arranged at equal intervals between the first nonwoven sheet 22A' and the second nonwoven sheet 22A'' along the transverse direction of the back piece 120 of the snap-on diaper 100 to improve the fit between the back piece 120 and the wearer's waist. Furthermore, the transverse contraction effect of the first elastomer also makes the snap-on diaper 100 more convenient to wear. More preferably, the second elastomer may also be arranged at equal intervals between the second nonwoven sheet 22A'' and the third nonwoven sheet 22A''', with the second elastomer staggered relative to the first elastomer along the transverse direction of the back piece 120, thus further improving the fit between the back piece 120 and the wearer's waist. Alternatively, the wrapping portion 22A may also be filled or provided with a non-elastic material between the first non-woven sheet 22A' and the second non-woven sheet 22A'' and / or between the second non-woven sheet 22A'' and the third non-woven sheet 22A'''.

[0096] In a non-limiting embodiment of the present invention, the first fastening portion 22B and the convex-shaped pulling portion 22D are adjacent to each other, and both are located in the protruding section of the wrapping portion 22A away from the front piece 110 or away from the rear piece 120, the protruding section also referred to as the gripping portion. Specifically, the first fastening portion 22B may include a fastener with neatly arranged micro-hooks, and the fastener occupies most of the area of ​​the protruding section of the front piece 110 or the gripping portion of the rear piece 120, preferably occupying about 50% of the area of ​​the gripping portion of the ear-shaped member 22 of the front piece 110 or about 50% of the area of ​​the gripping portion of the ear-shaped member 22 of the rear piece 120. The convex-shaped pulling portion 22D does not contain a fastener with micro-hooks, so as to facilitate manual pulling of the ear-shaped member 22 by the user. Preferably, in the first embodiment of the snap-on diaper without front and back separation, the gripping portion has an upper edge 25 that is generally parallel to the edge of the wrapping portion 22A toward the back waist edge 121, and a lower edge 25' that is parallel to the edge of the wrapping portion 22A away from the back waist edge 121. See [reference needed] Figure 4 .

[0097] Corresponding to the first fastening portion 22B of the ear-shaped member 22, a plurality of second fastening portions 171 are respectively provided on the distal side of the front sheet 110 and the distal side of the rear sheet 120, parallel to the transverse fold line T of the snap-on diaper 100. When the aforementioned first fastening portion 22B is configured as a fastener with micro-hooks, the surface of the second fastening portion 171 is distributed with a plurality of micro-flanges. Further, according to... Figure 4 In the first embodiment of the snap-on diaper shown without front and back distinction, those skilled in the art can also conceive that the first fastening portion 22B of the single ear-shaped member 22 arranged on the front panel 110, which is in this example on the right side of the front waist edge, is a complementary design to the micro-flange of the second fastening portion 171 located on the rear panel 120, which is also on the right side. Similarly, the first fastening portion 22B of the single ear-shaped member 22 arranged on the rear panel 120, which is in this example on the left side of the rear waist edge, is also a complementary design to the micro-flange of the second fastening portion 171 located on the left side of the front panel 110. This is so that when the snap-on diaper is changed from an open state to a closed state, when the single ear-shaped member 22 of the right side of the front panel 110 engages with the right portion of the second fastening portion 171 of the rear panel 120, the single ear-shaped member 22 of the rear panel 120 on the other side engages with the left portion of the second fastening portion 171 of the front panel 110. As a result, the two are suitable for multiple secure snap-fits, preferably up to three snap-fits, without taking into account the caregiver's directional operation or requiring the caregiver to distinguish front from back, thereby preventing misoperation by the wearer or caregiver of infants and young children.

[0098] Therefore, the wearer of the snap-on diaper 100 or the caregiver of the infant can pull the pull part 22D of the ear-shaped component 22 to, on the one hand, make the diaper located on the other ... Figure 4 The first fastening portion 22B of the single ear-shaped member 22 on the left side of the rear piece 120 is joined with the micro-flange on the left side portion surface of the second fastening portion 171 located on the front piece 110, and on the other hand, the portion located on the left side of the rear piece 120 is joined together ... surface of the rear piece 110. Figure 4 The first fastening portion 22B of the single ear-shaped member 22 on the right side of the front piece 110 is combined with the micro-flange on the same right side surface of the second fastening portion 171 located on the rear piece 120. Preferably, the first fastening portions 22B of the single ear-shaped member 22 on the left and right sides of the front piece 110 or the rear piece 120 and the second fastening portion 171 with micro-flange on the front piece 110 or the rear piece 120 are located approximately in the same longitudinal position to facilitate the operation of the snap-on diaper 100 by the wearer and the caregiver. Furthermore, due to the symmetrical design of the front piece 110, the rear piece 120, the crotch area 130, and the absorbent core 150 relative to the transverse fold line T according to the present invention, the wearer and the caregiver can conveniently complete the wearing of the snap-on diaper 100 and the care of the infant without having to distinguish between the front piece 110 and the rear piece 120. Therefore, the snap-on diaper 100 of this utility model does not require consideration of the front and back operation direction when in use, which provides considerable operational convenience for the wearer, especially in dark or poor visibility environments.

[0099] like Figure 5 As shown, the second embodiment of the snap-on diaper of the present invention, which does not distinguish between the front and back, is a further improvement based on the aforementioned first embodiment. Wherein... Figure 5 The gripping portion of a single ear-shaped member 22 located on the left side of the rear piece 120 is arranged at an angle relative to the wrapping portion 22A. Specifically, the upper edge 25 and lower edge 25' of the gripping portion of the single ear-shaped member 22 are substantially parallel, and the two edges form an ear edge angle α with respect to the constructed first transverse line T1. Preferably, the ear edge angle α is controlled at 5°. o Up to 20 o Within the range. More preferably, the included angle α of the ear edge is set at 12. o Up to 15 o Within a certain range, specifically within the range of the human buttock angle, the gap S formed between the buttock protrusion and the lower back depression caused by the buttock angle is eliminated, thereby improving the diaper's fit and leak-proof performance. Similarly, in Figure 5 The single ear-shaped component 22 located on the right side of the front piece 110 also has the same inclined design. In this embodiment, the second fastening part 171 with a micro-flange is arranged in a manner substantially the same as in the first embodiment described above.

[0100] like Figure 6 As shown, the third embodiment of the snap-on diaper of the present invention, which does not distinguish between the front and back, is a further improvement based on the aforementioned first and second embodiments. Wherein... Figure 6 The gripping portion of the single ear-shaped component 22 located on the left side of the rear piece 120 has a similar... Figure 4 The gripping portion has the same design as in the first embodiment shown. In other words, the gripping portion has an upper edge 25 that is generally parallel to the edge of the wrapping portion 22A towards the rear waist edge 121, and a lower edge 25' that is parallel to the edge of the wrapping portion 22A away from the rear waist edge 121. However, located in Figure 6 The single ear-shaped component 22 on the left side is arranged at an angle relative to the front piece 110 or the rear piece 120. Specifically, the upper edge 25 and lower edge 25' of the gripping portion of the ear-shaped component 22 are preferably formed relative to the constructed first transverse line T1 at point 12. o Up to 15 o The included angle α of the ear edge within the range, i.e., the human hip angle, is used to eliminate the gap S formed between the hip protrusion point and the lower back depression caused by the human hip angle, and further adapt to the adhesion between the first fastening part 22B of the ear-shaped member 22 provided on the rear piece 120 or the front piece 110 and the micro-flange of the second fastening part 171 provided on the front piece 110 or the rear piece 120. Similarly, in Figure 6 The single ear-shaped component 22 located on the right side of the front piece 110 also has the same inclined design. In this embodiment, the second fastening part 171 with a micro-flange is arranged in a manner substantially the same as in the first embodiment described above.

[0101] like Figure 7 As shown, in the fourth embodiment of the snap-on diaper without front or back separation according to the present invention, the gripping portion of the single ear-shaped member 22 located on the front piece 110 and the back piece 120 has a gripping position that is consistent with... Figure 4 The gripping portion is the same design as in the first embodiment shown. Unlike the prior art design where the second fastening portion 171 is arranged symmetrically along the longitudinal centerline L in the front piece 110 and the rear piece 120 for a considerable length, this design... Figure 7In the embodiment shown, the second fastening portion 171 disposed on the front piece 110 or the rear piece 120 is configured to have a relatively small area and size, and is arranged only on one side of the front piece 110 or the rear piece 120 at a predetermined distance from the longitudinal centerline L. Specifically, the second fastening portion 171 may be configured to have an area approximately twice that of the first fastening portion 22B of the ear-shaped member 22. Further, the second fastening portion 171 located on the front piece 110 is the same size as the second fastening portion 171 located on the rear piece 120, and the first distance X1 of the former relative to the longitudinal centerline L is equal to the second distance X2 of the latter relative to the longitudinal centerline L. In this embodiment, each of the second fastening portions 171 is located on the side of the front piece 110 or the rear piece 120 away from the ear-shaped member 22, and the position of the adhesive portion relative to the longitudinal centerline L is similar to that of the aforementioned second embodiment. Preferably, each of the second fastening portions 171 is formed relative to the constructed first transverse line T1, preferably formed at 12... o Up to 15 o The included angle β of the ear edge within the range is used to eliminate the gap S formed between the buttock protrusion and the lumbar concave point caused by the buttock protrusion angle of the human body.

[0102] Furthermore, those skilled in the art can also construct an arrangement mirroring the ear-shaped component 22 and the second fastening part 171 based on the design of the first to fourth embodiments described above, which can also achieve an ideal wearing form with good fit and obtain a high leak-proof effect.

[0103] The embodiments of this utility model have been illustrated and described herein, but those skilled in the art should understand that various modifications, omissions, and additions can be made without departing from the spirit and scope of this utility model. It should not be understood as limited to the specific embodiments described herein, but encompasses all possible embodiments embodied within the scope and equivalents of the features described in the appended claims.

[0104] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​stated. Rather, unless otherwise specified, each such dimension is intended to represent the value and a functionally equivalent range around that value. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0105] All documents referenced in the “Detailed Description” section are incorporated herein by reference in the relevant sections; no reference to any document should be construed as an admission that it is prior art concerning this utility model. In the event of any conflict between the meaning or definition of any term in this written document and the meaning or definition of any term in the referenced documents, the meaning or definition assigned to the term in this written document shall prevail.

[0106] While specific embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that many other changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, the appended claims are intended to cover all such changes and modifications within the scope of the present invention.

[0107] When describing elements of the present invention or their preferred embodiments(s), the articles “a,” “an,” “the,” and “the” are intended to indicate the presence of one or more elements. The terms “comprising,” “including,” and “having” are intended to be inclusive and mean that additional elements may be present in addition to the listed elements. Many modifications and variations may be made to the present invention without departing from the spirit and scope thereof. Therefore, the above embodiments are not intended to limit the scope of the present invention.

Claims

1. A snap-on diaper (100) without front or back separation, comprising at least a front piece (110), a back piece (120), and a crotch area (130) connected to the front piece (110) and the back piece (120) and incorporating an absorbent core (150), characterized in that, Both the front piece (110) and the rear piece (120) have a single ear-shaped component (22) with a wrapping portion (22A) and a first fastening portion (22B), and a second fastening portion (171), wherein, - The front piece (110) and the rear piece (120) have substantially the same external dimensions, and the front piece (110), the rear piece (120) and the crotch area (130) are all symmetrically arranged along the longitudinal center line (L) and the transverse fold line (T); The front piece (110) has a single ear-shaped member (22) arranged on the front waist side edge of the front piece (110), and the rear piece has a single ear-shaped member (22) arranged on the rear waist side edge (123) of the rear piece (120). The single ear-shaped member (22) arranged on the front piece (110) and the single ear-shaped member (22) arranged on the rear piece (120) have substantially the same spacing relative to the longitudinal centerline (L) and the transverse fold line (T), respectively. The single ear-shaped member (22) arranged on the front waist side edge of the front piece (110) and the single ear-shaped member (22) arranged on the rear waist side edge (123) of the rear piece (120) are arranged on different sides about the longitudinal centerline (L). The second fastening portion (171) of the front piece (110) and the second fastening portion (171) of the rear piece (120) are arranged substantially symmetrically with respect to the transverse fold line (T) to allow a single ear-shaped member (22) of the front piece (110) on one side to engage with the second fastening portion (171) of the rear piece (120) on the other side.

2. The snap-on diaper (100) without front or back separation according to claim 1, characterized in that, The second fastening portion (171) of the front piece (110) is arranged at a predetermined distance from the longitudinal center line (L) on the same side as the ear-shaped member (22) of the rear piece (120), and the second fastening portion (171) of the rear piece (120) is also arranged at a predetermined distance from the longitudinal center line (L) on the same side as the ear-shaped member (22) of the front piece (110).

3. The snap-on diaper (100) without front or back separation according to claim 1, characterized in that, The front piece (110) and the rear piece (120) also include a waist leak-proof bag (180) that opens toward the crotch area (130). The edge of the waist leak-proof bag (180) along the longitudinal center line (L) away from the crotch area (130) is largely overlapped with the front waist edge of the front piece (110) or the rear waist edge of the rear piece (120), and the edges of the waist leak-proof bag (180) along the transverse fold line (T) are partially joined to the ear-shaped member (22).

4. The snap-on diaper (100) without front or back separation according to claim 1, characterized in that, The absorbent core (150) also has an absorbent core isolation layer (133), which extends from both sides of the absorbent core (150) to the two side edges (131) of the crotch area (130).

5. The snap-on diaper (100) without front or back separation according to claim 1, characterized in that, The wrapping portion (22A) of the ear-shaped component (22) is made of a single layer or multiple layers of non-woven sheet laminate.

6. The snap-on diaper (100) without front or back separation according to claim 5, characterized in that, One layer of nonwoven sheet has a uniformly distributed raised pattern, and there are equidistantly distributed elastomers or non-elastic bodies between it and another nonwoven sheet.

7. The snap-on diaper (100) without front or back separation according to claim 1, characterized in that, The second fastening part (171) also has multiple flanges, and the second fastening part (171) and the first fastening part (22B) of the ear-shaped component (22) are complementary adhesive structures.

8. The snap-on diaper (100) without front or back separation according to claim 7, characterized in that, A single ear-shaped member (22) disposed on the front waist side edge of the front piece (110) has a gripping portion extending away from the front piece (110), wherein the gripping portion disposed on the front piece (110) extends obliquely relative to the front waist edge, forming an angle in the range of 12° to 15°; a single ear-shaped member (22) disposed on the rear waist side edge (123) of the rear piece (120) has a gripping portion extending away from the rear piece (120); wherein the gripping portion disposed on the rear piece (120) extends obliquely relative to the rear waist edge, forming an angle in the range of 12° to 15°.

9. The snap-on diaper (100) without front or back separation according to claim 8, characterized in that, The second fastening portion (171) arranged on the front piece (110) extends obliquely relative to the front waist edge, or the second fastening portion (171) arranged on the rear piece (120) extends obliquely relative to the rear waist edge.

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