Disposable fastening pant diaper

Abstract

This utility model discloses a disposable snap-on trouser-style diaper, which has a longitudinal center line, a transverse fold line, a front piece, a back piece, and a crotch area, wherein the crotch area connects the front and back pieces. The trouser-style diaper includes: a lining layer facing the body, an outer cover layer, and an absorbent core, wherein a breathable bottom film layer is disposed between the outer cover layer and the absorbent core. It also includes a fastening system and a self-illuminating indicator, wherein the self-illuminating indicator is located at at least one of the following: fasteners at the earpiece, a front waistband at the front piece, the breathable bottom film layer or the outer cover layer, and their components. This allows for visual cues sufficient for caregivers to operate the diaper in dark environments at low cost and without significant changes to the manufacturing process, which helps to enhance product competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene products, and in particular to a disposable snap-on trouser-style diaper that makes it easy for caregivers to distinguish the front from the back in a dark environment. Background Technology

[0002] Baby diapers with snap-on diapers are an indispensable item in a baby's daily life. They not only provide a comfortable fit but also effectively absorb urine, keeping the baby's bottom dry. Changing snap-on diapers promptly is crucial because a baby's skin is delicate, and wearing wet diapers for extended periods can easily lead to diaper rash. This is especially true in summer when babies sweat more, potentially requiring more frequent diaper changes. In short, regularly changing snap-on diapers can effectively reduce the likelihood of diaper rash, keeping your baby's skin healthy and comfortable.

[0003] Putting on or changing snap-on diapers for infants is not an easy task for caregivers, such as parents, because it is often difficult to position them on the baby, or because the baby often moves around during the dressing process, making it easy for snap-on diapers to be misused. This misuse can lead to an improper fit and gaps, which can cause leakage of bodily waste such as urine or feces; misaligned parts (such as the snaps) can leave marks on the baby's skin and / or cause discomfort. This is especially true when caregivers are dressing less cooperative individuals, such as infants. As a result, during the change, caregivers often have to hold parts of the baby's body and the diaper simultaneously, making it even more difficult to align the diaper for a proper fit. Therefore, providing caregivers with visual cues on how to correctly put snap-on diapers on infants is beneficial.

[0004] Such visual cues are easily achieved in well-lit conditions. However, due to the need for certain lighting, it's often necessary to turn on the light when changing snap-on diapers at night to discern the position of the fasteners. However, turning on the light can disrupt a baby's sleep quality, as it disturbs their sleep environment and rhythm. Once the baby wakes up, they require adult care, which further disrupts the parents' sleep.

[0005] Therefore, there is a need for a disposable snap-on diaper that can be used correctly by caregivers in dark environments with high feasibility and low cost, and that can meet the caregiver's need to change snap-on diapers correctly without disturbing the infant's sleep or in an environment where the lights are on. Utility Model Content

[0006] Therefore, the objective of this invention is to provide a disposable snap-on trouser-type diaper, thereby at least partially overcoming the shortcomings of the prior art.

[0007] To accomplish the above tasks, this utility model provides a disposable snap-on trouser-style diaper, which has a longitudinal center line, a transverse fold line, a front piece, a back piece, and a crotch area. The crotch area extends longitudinally between the front piece and the back piece and connects the front piece and the back piece. The trouser-style diaper includes: An absorbent assembly having a body-facing lining layer defining an inner surface of the trouser diaper, a garment-facing outer cover layer defining an outer surface of the trouser diaper, and an absorbent core disposed between the lining layer and the outer cover layer, wherein a breathable bottom film layer is disposed between the outer cover layer and the absorbent core; a pair of ears extending laterally outward from opposite sides of the absorbent assembly about a longitudinal centerline at the back piece of the absorbent assembly; and a fastening system including fasteners located at each of the pair of ears and a front waistband located at the front piece of the outer surface of the trouser diaper, wherein the front waistband is sized and positioned to repeatedly engage with the corresponding fasteners in the pair of ears when the front and back pieces are closed along a transverse fold line to maintain the snap-on trouser diaper in a closed position; and a self-illuminating indicator located at at least one of the group consisting of the fasteners of the ears, the front waistband at the front piece, the breathable bottom film layer, or the outer cover layer.

[0008] Therefore, this utility model can achieve at least the following beneficial technical effects: by adding self-illuminating indicators that can emit light for a long time in the dark at multiple feasible parts of the disposable snap-on diaper, it allows caregivers to be provided with sufficient visual cues to correctly operate the diaper in the dark without turning on the lights to disturb the infant or caregiver's sleep. This, in turn, allows the caregiver's need to correctly change the snap-on diaper to be met with high feasibility and low cost.

[0009] In a preferred aspect, the self-illuminating indicator comprises a bonding layer and a self-illuminating layer stacked sequentially from bottom to top. The bonding layer is designed to attach to or be attachable to an attachment area of ​​at least one of the following: a fastener at the ear, a front waistband at the front panel, a breathable bottom film layer, or an outer cover layer, and the like. The self-illuminating layer is a film made of a rare-earth long-afterglow material and is designed to retain a luminance of 100 microcandela / m² after 480 minutes of irradiation with a D65 light source at 200 LUX for 20 minutes. This allows the self-illuminating indicator to meet overnight care needs.

[0010] As a preferred aspect, the self-illuminating indicator is a fabric layer made of self-illuminating fibers with a core-sheath structure, wherein the outer layer is a rare-earth-containing material and the inner layer is a polyolefin resin. The outer layer is designed to retain a luminance of 100 microcandela / m² after 480 minutes of irradiation with a D65 light source at 200 LUX for 20 minutes. This allows the self-illuminating indicator to meet overnight care needs.

[0011] As a preferred aspect, the self-luminous indicator comprises a fiber with a self-luminous masterbatch, wherein the self-luminous masterbatch is a compound of a rare-earth long-afterglow luminescent material and a thermoplastic polymer, wherein the fiber is designed to retain a luminance of 100 microcandela / m² after 480 minutes of irradiation with a D65 light source at 200 LUX for 20 minutes.

[0012] As a preferred aspect, it also includes a wrapper located near the fastener of each of the pair of ears and auxiliary fasteners located on both sides of the front waistband about the longitudinal centerline, wherein the auxiliary fasteners are sized and positioned to be repeatedly engaged to the corresponding wrapper in the pair of ears when the front and back panels are closed along the transverse fold line to keep the snap-on trouser diaper in a closed position.

[0013] As a preferred aspect, the base film layer is a thin layer made of a polyethylene resin carrier with added calcium carbonate, wherein a visual pattern layer is printed on the base film layer.

[0014] As a preferred aspect, it also includes a pair of elastic members extending from the front piece through the absorbent assembly to the rear piece, wherein the elastic members are used to form a leg cuff around the leg opening. Attached Figure Description

[0015] Figure 1 The diagram shows a top view of the disposable snap-on trouser-type diaper according to the present invention in its open, flat state, with the inner surface of the diaper facing the body when it is not closed.

[0016] Reference numerals used repeatedly in this specification and drawings are intended to indicate the same or similar elements of this utility model.

[0017] Explanation of reference numerals in the attached figures

[0018] 100 - Fastener-style trouser diaper; 110 - Front panel; 111 - Front waistband; 120 - Back panel;

[0019] 121 - Lower back edge; 122 - Ear area; 122A - Wrapping piece; 122B - Fastener;

[0020] 123 - Lower back side edge; 124 - Lower back elastic band; 125 - Self-illuminating indicator;

[0021] 130 - Crotch area; 131 - Side edge; 140 - Lining layer; 150 - Absorbent core; 151 - Leg cuffs; 152 - Side barrier; 160 - Outer layer; 161 - Front waistband; 162 - Urine indicator; 163 - Bottom film layer;

[0022] 164 - Auxiliary fastener; L - Longitudinal centerline; T - Lateral fold line; X - Lateral; Y - Longitudinal; Detailed Implementation

[0023] 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.

[0024] Terminology Definition

[0025] 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 located between layers and / or elements to hold the article together (e.g., earpieces, sidepieces, and straps are bonded to a base structure via adhesive, and the layers of earpieces, sidepieces, 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. In this case, portions of the material layers may become partially melted and pressed together, so that they are physically bonded together once cooled. Nonwoven fabrics (including, for example, polypropylene, polyethylene, etc.) adhesives (including, for example, styrene block copolymers (e.g., SIS, SBS)) and absorbent gelling materials constitute more than 50%, more than 75%, and typically more than 90% of the weight of the disposable absorbent article. Furthermore, the core including the absorbent gelling material is typically held within the base structure in a manner that encapsulates and contains the absorbent gelling material under normal conditions. These disposable absorbent articles typically have an absorbency of more than about 100 mL of fluid, and may have a capacity of up to about 500 mL of fluid or more. Sewing (including the use of thread) and / or woven materials are generally not used in the manufacture of disposable absorbent articles. If sewing or woven materials are used, they constitute a very small percentage of disposable absorbent articles.

[0026] "Pants" (also known as "training pants," "pre-closed diapers," "diaper pants," "pants-style 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 perimeter of the article in the waist area (e.g., side-fastened or seamed, front waist-fastened or seamed, back waist-fastened or seamed).

[0027] 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.

[0028] As used in this invention, the term "meltblown fiber web" generally refers to a nonwoven web prepared by means of: extruding molten thermoplastic material as molten fibers through a plurality of typically circular, fine die capillary pores into a stream of aggregated high-speed gas (e.g., air), which finens the fibers of the molten thermoplastic material to reduce their diameter. Subsequently, the meltblown fibers are transported by a high-speed gas flow and placed on a collecting surface to form a web of randomly distributed meltblown fibers. Generally, the meltblown fibers can be continuous or discontinuous microfibers, typically less than 10 micrometers in diameter, and are typically viscous when placed on a collecting surface.

[0029] As used in this invention, the term "spunbond web" generally refers to a web comprising substantially continuous fibers of small diameter. The fibers are produced by extruding molten thermoplastic material through numerous small, typically circular, spinneret capillary holes, followed by a rapid reduction in the diameter of the extruded fibers by, for example, lead-out drawing and / or other known spunbonding mechanisms. "Proximal" and "distal" refer to the relative proximity or distance of an element from the longitudinal or lateral centerline of the structure, respectively (e.g., 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).

[0030] "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).

[0031] 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.

[0032] 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 of no more than 1.25 inches. Ideally, the material shrinks or recovers at least 50%, and even more ideally, at least 80% of the elongated length.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Disposable snap-on diaper

[0038] First, the basic structure of the disposable snap-on trouser-type 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 disposable snap-on trouser diaper in its open state is illustrated in line drawing, showing its side facing the clothing. It should be noted that, since the disposable snap-on trouser diaper is a thin product, the intended embodiment is described in detail herein using both line drawings and actual product illustrations to better illustrate its structure and construction.

[0039] In this document, the snap-on trouser-style diaper 100 shown is a disposable absorbent product designed to be placed against or adjacent to the wearer's body to absorb and contain various excretions from the body. Figure 1 As best shown in the diagram, in the longitudinal Y direction, the snap-on trouser-type diaper 110 has a front piece 110, a crotch area 130 and a back piece 120 in sequence, wherein the crotch area 130 extends between and connects the front piece 110 and the back piece 120.

[0040] In the thickness direction of the snap-on trouser-style diaper 100, the trouser-style diaper 100 is along... Figure 1 The paper-faced portion of the diaper 100, facing inwards, may sequentially include a lining layer 140 facing the body, an outer cover layer 160 facing the clothing, and an absorbent core 150 located between the lining layer 140 facing the body and the outer cover layer 160 facing the clothing. Here, the lining layer 140 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 pant-style diaper 100. The absorbent assembly can be any suitable shape, including, for example, […]. Figure 1 The shape is roughly I-shaped as shown.

[0041] Because the snap-on diaper 100 is a thin product, it is difficult to clearly distinguish the side facing the clothing and the side facing the body from a two-dimensional line drawing. To better illustrate the structural and design differences between the clothing-facing and body-facing sides, this invention also includes images of the actual product that demonstrate its wearing effect. As used herein, the front piece 110 refers to the portion of the diaper 100 that is approximately in front of the wearer when the infant is wearing it. The back piece 120 refers to the portion of the diaper 100 that is approximately behind the wearer when the infant is wearing it, and the crotch area 130 refers to the portion that is approximately between the wearer's legs when the infant is wearing it; these three aspects are readily observable.

[0042] exist Figure 1 In 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, "straight edge" means an edge that is substantially free of curves, bends, angles, notches, or irregular portions. The body-facing lining layer 140 of the snap-on trouser-type 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 140 is suitably compliant, soft, and non-irritating to the wearer's skin. The body-facing lining layer 140 is less hydrophilic than the absorbent core 150 and its porosity is sufficient to allow liquid permeation. The body-facing lining layer 140 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 140 facing the body is suitably adapted to isolate the wearer's skin from the liquids and moisture held by the absorbent core 150.

[0043] exist Figure 1 The outer cover layer 160 of the pant-style diaper 100, better illustrated, defines 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. For example, the fabric-like outer cover layer may be composed of a polypropylene spunbond fabric laminated and thermally bonded to a thinned polypropylene film. Here, the bottom film layer may include a microporous "breathable" material that allows vapor to escape from the pant-style diaper 100 while still preventing liquid outflow. For example, the bottom film layer 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 adjacently provided with a bottom film layer 163 including an embossed or otherwise configured visual pattern 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 cartoon pattern that infants and young children like or a business logo. Preferably, the bottom film layer 163 also has a urine indicator 162 that can indicate to the caregiver that the infant has urinated.

[0044] The body-facing lining layer 140 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 140 and the clothing-facing outer cover layer 160 may be joined to each other around the outer periphery of the trouser diaper 100 by any means known to those skilled in the art, such as adhesive bonding, ultrasonic bonding, thermal bonding, and combinations thereof.

[0045] As described above, the absorbent core 150 is disposed between the body-facing lining layer 140 and the clothing-facing outer cover layer 160. The absorbent core 150 is generally conformal and capable of absorbing and retaining liquid bodily waste. The absorbent core 150 may comprise 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 imparted by the intended use of the diaper.

[0046] In a suitable embodiment, the trouser-type diaper 100 may include a flow-through portion (not shown) disposed between the absorbent core 150 and the body-facing lining layer 140. The flow-through 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-through portion. For example, the flow-through portion may be a spunbond or meltblown web of polyolefin fibers. The flow-through portion may also be a bonded combed web of natural and synthetic fibers. The flow-through portion may be a substantially hydrophobic material and may optionally be treated with surfactants or otherwise to impart a desired degree of wettability and hydrophilicity.

[0047] As a preferred aspect, the trouser-type 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 lining layer 140 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., a stranded leg elastic component) bonded to the outer cover layer 160 and / or the body-facing lining layer 140.

[0048] 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 trouser 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 trouser diaper 100 and to hold the trouser diaper 100 against the wearer (especially against the wearer's waist), as will be described more fully herein. As a preferred embodiment, the back waist elastic band 124 may be designed with an attachment area that seals with the back panel 120 and a non-attached area that does not seal with the back panel 120 and faces the crotch area 130, wherein the non-attached 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 trouser diaper 100, such as, but not limited to, feces excreted by infants.

[0049] 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 (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.

[0050] The leg cuffs 151 and / or the back waist elastic band 124 can be attached to the diaper 100 in any manner known to those skilled in the art. For example, the leg cuffs 151 and / or the back waist elastic band 124 can be joined to the diaper 100 by ultrasonic bonding, thermal bonding, adhesive bonding, and combinations thereof.

[0051] like Figure 1Clearly visible, the back piece 120 of the diaper includes a pair of ears, generally indicated by 122. Here, this pair of ears 122 may be symmetrically arranged about a longitudinal centerline L. In a suitable embodiment, the ears 122 in the back piece may be formed by an extension of the body-facing lining layer 140, an outer cover layer 160, or a combination of both the body-facing lining layer 140 and the outer cover layer 160. In another suitable embodiment, the ears 122 may be formed as a separate component and attached to the body-facing lining layer 140, the outer cover layer 160, or both the body-facing lining layer 140 and the outer cover layer, as is well known in the art. In the illustrated embodiment, the ears 122 are attached to the body-facing surface of the body-facing lining layer 140 such that when the trouser diaper 100 is worn, the attached portion of the ears 122 is positioned between the wearer's body and the body-facing lining.

[0052] In a suitable embodiment, each of the ear portions 122 includes a cover 122A and a fastener 122B mounted to the cover. 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 inner waist side edge 123 of the trouser-type diaper 100, such that a portion of the wrapper overlaps with the body-facing lining layer 140. The portion of each of the wrappers 122A that overlaps with the body-facing lining layer 140 is bonded (e.g., adhesive bonding, thermal bonding, thermal bonding, and both adhesive bonding) to at least the body-side lining.

[0053] exist Figure 1 In the illustrated embodiment, the proximal and distal edges of each of the packages 122A are substantially 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.

[0054] Preferably, but not exclusively, each wrapping element 122A in the ear portion 122 can be designed as a non-elastic portion, and fasteners 122B (such as hook material) can be provided to connect to the wrapping element 122A. Thus, the size and tightness of the waist opening of the trouser-type diaper 100 in the wearing configuration can be adjusted according to the wearer's waist circumference by deformation such as the back waist elastic band 124. The non-elastic portion of the wrapping element 122A in the back ear portion 122 extends laterally outward, and each fastener 122B attached to the non-elastic portion of the wrapping element 122A is configured to engage a loop member provided in the front waist area 161 of the diaper 100 in the wearing configuration, as will be described more fully herein.

[0055] The ear portion 122 shown also includes a gripping area extending laterally outward from the fastener 122B, for manually gripping and manipulating the fastener 122B. Thus, the rear piece 120 (more specifically, the rear ear portion 122) can be attached to the front piece 110 during wear by folding it relative to the lateral fold line T using a pair of fasteners 122B symmetrically arranged relative to the longitudinal center line L, thereby defining a three-dimensional wearing configuration with a waist opening and a pair of leg openings. This allows for selectively adjusting the trouser-type diaper 100 from a position such as... Figure 1 The open configuration shown can be moved to a closed or worn configuration.

[0056] Corresponding to the fastener 122B in the back piece, the trouser diaper 100 also includes a front waist fastening band 161 formed as a separate component and attached to the outer surface of the diaper's outer cover layer 160. More specifically, a band (generally indicated as 161) comprising fastening material designed as a loop or hook is attached to the front piece 110 of the diaper. The 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 trouser diaper 110. Thus, the fastener 122B located on the non-elastic portion of the earpiece 122 and the corresponding front waist fastening band 161 are designed to be repeatedly and securely fastened together, thereby securing the trouser diaper 100 in a detachable manner in a wear configuration.

[0057] The fasteners 122B and the front waistband 161, which can form a re-fastening engagement with each other, can include any re-fastening fastener suitable for absorbent articles, such as adhesive fasteners, bonding fasteners, mechanical fasteners, etc. In a suitable embodiment, the fasteners 122B and the front waistband 161 include mechanical fastening components, such as hook and loop fasteners. Figure 1 In the embodiment shown, fastener 122B includes a hook fastener and the front waistband 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 re-fastening fastener 122B and the front waist fastening band 161 are fastened together, the auxiliary fasteners 164 are allowed to fasten with the wrapping piece 122A designed with hooks or loops to ensure that the trouser-type diaper 100 has better fit and fastness.

[0058] To allow caregivers to clearly identify and operate the diaper 100 at night, this invention preferably includes a self-illuminating indicator 125 on the reusable fastener 122B. This self-illuminating indicator 125 comprises at least a multi-layered structure consisting of a bonding layer and a self-illuminating layer stacked sequentially from bottom to top. Preferably, the self-illuminating indicator 125 further includes a substrate layer sandwiched between the bonding layer and the self-illuminating layer. This substrate layer is a sheet made of polypropylene or polyethylene, and the self-illuminating layer is a film made of a rare-earth long-afterglow material. This rare-earth long-afterglow material can be, for example, any existing long-afterglow luminescent material, including long-afterglow luminescent materials, phosphorescent materials, or afterglow phosphors described in currently published patent applications. It is preferably an aluminate-based long-afterglow luminescent material, more preferably an alkaline earth metal aluminate-based long-afterglow luminescent material, and even more preferably a strontium aluminate-based long-afterglow luminescent material. Examples of such long-afterglow luminescence include the luminescent material described in invention patent ZL99100285.7 of Beijing Hualong Yayang Technology Development Co., Ltd., and the luminescent material described in invention patent ZL97100694.6 of Beijing Hualong Yayang Technology Development Co., Ltd., or any commercially available long-afterglow luminescent material product. Here, the self-luminescent indicator 125 can be pre-attached to the fastener 122B and then connected to the diaper 100 along with the fastener 122B, or it can be a separately provided self-luminescent indicator 125 added to the fastener 122B of the already assembled diaper 100.

[0059] By adding a self-illuminating indicator 125 that can emit light for extended periods in the dark to the re-fastening fastener 122B, visual cues sufficient for caregivers to correctly operate the diaper 100 are provided in dark environments without needing to turn on lights to avoid disturbing the infant or caregiver's sleep. Adding a self-illuminating indicator to the diaper 100 to meet the needs of caregivers for correct operation in the dark requires consideration of various factors such as product cost and consumer acceptance. To the best of the inventors' knowledge, no one has previously attempted a similar approach in diapers.

[0060] Alternatively, the self-luminous indicator can also be made of a composite self-luminous fiber with a core-sheath structure in the fabric of the fastener 122B. This composite self-luminous fiber is designed as a composite fiber comprising a sheath containing rare-earth luminescent material and a core layer made of, for example, polyolefin resin. Such composite self-luminous fiber networks are exemplified by the core-sheath structure composite luminescent fiber in the invention patent ZL201410099683.0 of Minjiang University, etc., or can be commercially available composite nylon from Changle Liheng Nylon Technology Co., Ltd. When the fastener 122B is made of a core-sheath structure composite self-luminous fiber, the fastener 122B is made solely from this composite fiber and then attached to the diaper 100 as an independent functional component.

[0061] Alternatively, self-luminescent indicators can also be made from fibers with self-luminescent masterbatch. This can be achieved by co-blending rare-earth long-afterglow luminescent materials with thermoplastic polymers such as polyethylene and polypropylene to produce the self-luminescent masterbatch. Specifically, the rare-earth long-afterglow luminescent material, thermoplastic polymer, dispersant, and thermoplastic polymer nucleating agent are mixed to form a mixture. This mixture is then fed to an extruder for compounding. For example, the compounding temperature is between 175 and 195°C, and the processing time is approximately 0.5 to 10 minutes. During compounding, the thermoplastic polymer in the composition is heated and melted, thus uniformly mixing the remaining components in the mixture with the molten thermoplastic polymer. With the aid of the dispersant and the extruder, the rare-earth long-afterglow luminescent material is uniformly dispersed in the thermoplastic polymer. After compounding, the mixture is then cooled and granulated to prepare the self-luminescent masterbatch.

[0062] Subsequently, one feasible approach is to form a sheet-like fabric layer from the fibers of the self-luminous indicator through mechanical, chemical, or thermal processing, and then uniformly arrange the self-luminous masterbatch on the fabric layer. Preferably, to fix the self-luminous masterbatch located on the fabric layer, an adhesive such as PA6200 can be sprayed onto the surface of the fabric layer, thereby securely arranging the self-luminous masterbatch on the fabric layer to produce the self-luminous indicator.

[0063] Another method using direct-luminescent masterbatch involves using self-luminescent masterbatch as raw material. Under spinning temperatures such as 230 to 290 degrees Celsius and spinning speeds of 1000 to 3000 meters per minute, semi-extended self-reflective fiber filaments with a core-sheath structure are formed through mechanical, chemical, or thermal processing. The diameter of these fibers is 10 to 30 micrometers (μm), and the fiber fineness is between 1 and 10 dtex (dtex / D). Self-luminescent indicators are then fabricated using these fibers.

[0064] As another alternative, the self-luminous indicator can also be arranged on the front waist fastening belt 161 of the repeatedly fastenable buckle. The structure of the self-luminous indicator can be referred to above for example. It is also conceivable that the front waist fastening belt 161 can also be made of composite self-luminous fibers with a skin-core structure or yarns with self-luminous masterbatch. All of the above methods can achieve visually conveying the position of the repeatedly fastenable or open part of the pant diaper 100 to the caregiver in a dark environment. Such a design can provide a good degree of night vision and significantly improve the operability of the caregiver changing the pant diaper at night.

[0065] As another feasible alternative, it is also conceivable to arrange the self-luminous indicator at the bottom film layer 163 in the outer cover layer 160. The self-luminous indicator can be sandwiched between the bottom film layer 163 and the outer cover layer 160. Such a design allows for good night visibility while maintaining the leak-proof performance, facilitating the caregiver to put on and take off the pant diaper at night. Of course, it is also feasible to set the self-luminous indicator in the outer cover layer 160, especially in the front panel 110 of the pant diaper 100, which allows for providing visual cues sufficient for the caregiver to correctly operate the pant diaper 100 in a dark environment.

[0066] Here, a self-luminous indicator containing an alkaline earth metal aluminate-based long afterglow luminescent material is added to the fastener 122B of the repeatedly fastenable buckle, and then the pant diaper 100 with this self-luminous indicator is subjected to a luminance test in accordance with the "Textile Luminous Afterglow Performance Test Method - Luminance Meter Method" of 20204788-T-608. According to this specification, the fastener 122B with the self-luminous indicator having a sample size of 10 mm in diameter is placed in a black box and left standing for 48 h. After irradiating with a D65 light source at 200 LUX for 20 min, it is tested with a luminance meter (manufacturer: KONICA MINOLTA, model: LS-100), and the luminance at 60 minutes, 240 minutes, and 480 minutes is recorded. If the luminance can still remain at 100 microcandelas per square meter (mcd / m2) after 480 minutes, it is considered qualified."

[0067] Here, the implementation forms of the present utility model have been exemplified and described. However, those skilled in the art should know that the above and other various changes, omissions, and additions can be made without departing from the spirit and scope of the present utility model. It should not be understood as being limited to the specific embodiments described here. It includes all possible implementation forms that can be embodied within the scope and equivalent scope of the features recited in the appended claims.

[0068] 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 range of functionally equivalent values ​​around that value. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0069] 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.

[0070] 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.

[0071] 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 disposable snap-on trouser-type diaper, comprising a longitudinal center line, a transverse fold line, a front piece, a back piece, and a crotch area, wherein the crotch area extends longitudinally between and connects the front and back pieces, characterized in that, The pant-style diapers include: An absorbent assembly having a lining layer defining the inner surface of the trouser diaper on the body-facing side, an outer cover layer defining the outer surface of the trouser diaper on the clothing-facing side, and an absorbent core disposed between the lining layer and the outer cover layer, wherein a breathable bottom film layer is disposed between the outer cover layer and the absorbent core. A pair of ears, the pair of ears extending laterally outward from opposite sides of the absorbent assembly about the longitudinal centerline at the rear piece of the absorbent assembly; And a fastening system comprising fasteners located at each of a pair of loops and a front waistband located on the front panel of the outer surface of the trouser-type diaper, wherein the front waistband is sized and positioned such that it can be repeatedly engaged with corresponding fasteners in the pair of loops when the front and back panels are closed along a transverse fold line to maintain the snap-on trouser-type diaper in a closed position; and A self-illuminating indicator, wherein the self-illuminating indicator is located at at least one of the group consisting of a fastener for the ear, a front waist fastening strap at the front panel, a breathable bottom membrane layer, or an outer cover layer.

2. The disposable snap-on trouser-type diaper according to claim 1, characterized in that, It also includes wrappings near fasteners located on each of the pair of ears and auxiliary fasteners located on both sides of the front waistband about the longitudinal centerline, wherein the auxiliary fasteners are sized and positioned to be repeatedly engaged to the corresponding wrappings in the pair of ears when the front and back panels are closed along the transverse fold line to keep the snap-on trouser diaper in a closed position.

3. The disposable snap-on trouser-type diaper according to claim 1 or 2, characterized in that, The base film layer is a thin layer made of polyethylene resin carrier containing calcium carbonate, wherein a visual pattern layer is printed on the base film layer.

4. The disposable snap-on trouser-type diaper according to claim 1 or 2, characterized in that, It also includes a pair of elastic members extending from the front piece through the absorbent assembly to the rear piece, wherein the elastic members are used to form a leg cuff around the leg opening.

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