Pant-type wearable article

By setting discontinuous inelastic areas and specific patterns on the elastic waistband of absorbent underwear and combining the design of inner and outer layer materials, the problems of insufficient comfort, fit and aesthetics are solved, achieving a better user experience and cost control.

JP2025143426APending Publication Date: 2025-10-01PROCTER & GAMBLE CO
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Patent Information

Application Number
JP2025113627
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2019-02-14
Filing Date
2025-07-04
Publication Date
2025-10-01

AI Technical Summary

Technical Problem

Existing absorbent underwear has deficiencies in terms of comfort, fit and aesthetics, and has high production costs, making it difficult to simultaneously meet the needs of infants and incontinent individuals.

Method used

An absorbent underwear with front and back elastic waistbands and waist areas is designed. By setting discontinuous inelastic areas and specific patterns on the elastic waistband and combining the design of the inner and outer layer materials, comfort and aesthetics are improved while controlling production costs.

Benefits of technology

It achieves better stretch, fit, comfort and breathability, improves the user experience, and reduces production costs through material selection and assembly methods.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a wearable article which has improved stretchability, fit, comfort, softness and breathability.SOLUTION: There is provided a wearable article which is continuous in a longitudinal direction and a traverse direction. The wearable article comprises: a front elastic belt; a rear elastic belt; a crotch region. The crotch region extends between the front elastic belt and the rear elastic belt in the longitudinal direction. The front elastic belt and the rear elastic belt are non-continuous in the crotch region. A specific portion of the front elastic belt or the rear elastic belt is a non-elastic region. The front and rear non-elastic regions have a first belt pattern FBP, the crotch region has a first crotch pattern FCP. The first belt pattern and the first crotch pattern are geometric patterns. 1) Both of the first belt pattern and the first crotch pattern FCP have a longitudinal orientation, or 2) Both of the first belt pattern and the first crotch pattern form a high order pattern and have a non-directional orientation.SELECTED DRAWING: Figure 6A
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Description

[Technical Field]

[0001] The present invention relates to pant-type wearable articles that have a pleasing tactile and aesthetic feel. [Background technology]

[0002]

[0003] Infants, young children, and other incontinent individuals wear absorbent articles such as diapers to receive and contain urine and other body exudates. Pull-on, or pant-type, absorbent articles are donned by inserting the wearer's legs into the leg openings and sliding the article upward into position around the lower torso. Pant-type absorbent articles are popular for infants who can walk and are often toilet training, as well as for younger infants who are more mobile and who tend to have more difficulty getting tape-on absorbent articles on, and who require a softer fit around the waist and leg openings.

[0003] Pant-type articles can have a variety of constructions that have sufficient elasticity around and near the waist opening to make it easy for the wearer or caregiver to unfold the article and insert the wearer's legs into the leg openings to don the article. The area around and near the waist is often referred to as an elastic belt. One type of construction for pant-type articles is belt-type pants that have a central chassis that covers the wearer's crotch region and separate elastic belts that define the waist opening and leg openings, as described in WO 2006 / 17718(A). Another type of construction for pant-type articles is one-piece pants that are configured so that the outer cover of the article completely covers the entire garment-facing surface of the article, and the portion that is configured to stretch around the torso is considered the elastic belt region.

[0004] Whatever the structure of the article, the outer surface or garment-facing side of the article may be the location most touched and observed by the wearer or caregiver during use, and therefore its characteristics are most relevant to the quality and function of the article. Desired qualities may include an underwear-like appearance and a pleasant tactile sensation, such as a soft and cushioned feel. The underwear-like appearance may be enhanced by providing a garment-facing side with a particular aesthetic, so that the belt and crotch regions are not easily distinguishable. Desired functions may include secure fit, breathability, and comfort, or intuitive signals of such attributes.

[0005] On the other hand, from the manufacturer's perspective, it is desirable to provide high quality absorbent articles by selecting materials and assembling them in a manner that provides the best user experience relative to the cost of the materials while controlling the cost of making the article. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] WO 2006 / 17718(A) Summary of the Invention [Problem to be solved by the invention]

[0007] Based on the foregoing, there is a need for wearable articles that provide improved stretch for ease of application, improved fit to prevent loosening, improved comfort and softness, and improved breathability for skin health. There is also a need for wearable articles with improved aesthetics that intuitively convey the above-mentioned functional benefits. There is also a need to provide such wearable articles that can be economically made. [Means for solving the problem]

[0008] The present invention provides a longitudinally and transversely continuous wearable article comprising a front elastic belt, a rear elastic belt, a crotch region, a waist opening, and a pair of leg openings, the crotch region extending longitudinally between the front elastic belt and the rear elastic belt; Each of the front elastic belt and the back elastic belt is a laminate including an inner sheet, an outer sheet, and an elastic member extending in a transverse direction, and the front elastic belt and the back elastic belt are discontinuous with each other in the crotch region; The present invention relates to a wearable article in which the front elastic belt and the back elastic belt have a transverse dimension of LW, the smaller longitudinal dimension of either the front elastic belt or the back elastic belt has a dimension of LS, and approximately 10% to approximately 40% of LW and approximately 15% to approximately 75% of LS, preferably approximately 30% to approximately 70% of LS, have their elastic operability removed, and the areas of the front elastic belt and the back elastic belt where the elastic operability has been removed are inelastic areas 221, the front and back inelastic areas 221 have a first belt pattern FBP, and the crotch area has a first crotch pattern FCP.

[0009] In one embodiment, the first belt pattern FBP and the first crotch pattern FCP are both geometric patterns, and the first belt pattern FBP and the first crotch pattern FCP both have a longitudinal orientation according to the measurements herein.

[0010] In another embodiment, both the first belt pattern FBP and the first crotch pattern FCP are about 16 mm 2 ~about 200mm 2 and forming a higher-order pattern HOP having an area dimension of 100 mm, wherein the first belt pattern FBP and the first crotch pattern FCP are geometric patterns having common elements, and both the first belt pattern FBP and the first crotch pattern FCP have a non-directional orientation according to the measurement method herein. [Brief explanation of the drawings]

[0011] While the specification concludes with claims that particularly identify and separately claim the subject matter regarded as constituting the invention, it is believed that the invention will be better understood when read in conjunction with the accompanying drawings, in which substantially identical elements are designated with like numerals, and the following description, in which: [Figure 1A] 1 is a perspective view of one embodiment of a wearable article of the present invention. [Figure 1B] 1 is a schematic diagram of one embodiment of a wearable article of the present invention in a contracted state, showing the front side of the article. [Figure 2A] FIG. 1 is a schematic plan view of one embodiment of a wearable article of the present invention with unbonded seams and showing the garment-facing side in a flat, uncontracted state. [Figure 2B] FIG. 2B is a schematic cross-sectional view of FIG. 2A taken along LX. [Figure 3A] 2B is a schematic plan view of the embodiment of FIG. 2A showing the location of the elastic members, elastic joints, and vertical joints. [Figure 3B] FIG. 3B is an enlarged schematic plan view of FIG. 3A. [Figure 4A] 4 is a schematic cross-sectional view of FIG. 3B taken along section line 4-4 of FIG. 3B. [Figure 4B] 4A is a schematic cross-sectional view of the contracted state. [Figure 5A] 1 is a schematic plan view of an elastic belt according to the present invention. [Figure 5B] 1 is a plan view of an elastic belt of the present invention in a stretched state. [Figure 5C] FIG. 5C is a plan view of the elastic belt of FIG. 5B in a contracted state. [Figure 6A] 1 is a schematic plan view of one embodiment of a wearable article of the present invention in a contracted state. [Figure 6B] FIG. 2 is a schematic plan view of another embodiment of a wearable article of the present invention in a contracted state. [Figure 7] FIG. 2 is a schematic plan view of another embodiment of a wearable article of the present invention in a contracted state. [Figure 8] FIG. 2 is a schematic plan view of another embodiment of a wearable article of the present invention in a contracted state. [Figure 9A]FIG. 2 is a schematic plan view of another embodiment of a wearable article of the present invention in a contracted state. [Figure 9B] 1 is a schematic plan view of one embodiment of a pattern of the present invention. [Figure 9C] FIG. 10 is a schematic plan view of another embodiment of a pattern of the present invention. [Figure 9D] FIG. 10 is a schematic plan view of another embodiment of a pattern of the present invention. [Figure 10] FIG. 1 is a schematic diagram of an example of a hanger-type sample holding fixture in accordance with the "Whole Article Force Measurement Method." [Figure 11A] This relates to the longitudinal orientation measurement method herein. [Figure 11B] This relates to the longitudinal orientation measurement method herein. [Figure 11C] This relates to the longitudinal orientation measurement method herein. [Figure 11D] This relates to the longitudinal orientation measurement method herein. [Figure 12A] 1 is an image of the FBP of Example 1 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 12B] 1 is an image of the FBP of Example 1 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 12C] 1 is an image of the FBP of Example 1 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 13A] 1 is an image of the FCP of Example 1 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 13B] 1 is an image of the FCP of Example 1 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 13C] 1 is an image of the FCP of Example 1 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 14A] 10 is an image of the FBP of Example 2 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 14B] 10 is an image of the FBP of Example 2 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 14C] 10 is an image of the FBP of Example 2 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 15A] 10 is an image of the FCP of Example 2 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 15B] 10 is an image of the FCP of Example 2 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 15C] 10 is an image of the FCP of Example 2 in its original and processed form relevant to the "longitudinal / transverse dispersion" measurement method herein. [Figure 16A] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section. [Figure 16B] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section. [Figure 16C] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section. [Figure 16D] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section. [Figure 16E] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section. [Figure 16F] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section. [Figure 16G] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section. [Figure 16H] 1 is a composite photograph of a pant-type article used as a visual display in the Examples section.

[0012] definition As used herein, the following terms shall have the meanings specified below.

[0013] "Wearable article" refers to a wearable article that may be in the form of pants, tape diapers, incontinence briefs, feminine hygiene garments, etc. A "wearable article" may be configured to absorb and contain various bodily exudates, such as urine, feces, menstrual blood, etc. A "wearable article" may serve as an outer cover that is adaptable to be joined with a separable disposable absorbent insert to provide the absorption and containment functions, such as that disclosed in WO 2011 / 087503(A).

[0014] "Pant" means a disposable absorbent article having preformed waist and leg openings. Pants may be donned by inserting the wearer's legs into the leg openings and sliding the pant into position about the wearer's lower torso. Pants are also commonly referred to as "closed diapers," "prefastened diapers," "pull-on diapers," "training pants," and "diaper pants."

[0015] "Longitudinal" refers to a direction extending substantially perpendicular from a waist edge to an opposing waist edge of the article and generally parallel to the maximum linear dimension of the article.

[0016] "Transverse" refers to a direction perpendicular to the longitudinal direction.

[0017] "Proximal" and "distal" mean closer or farther, respectively, from the longitudinal center of the article.

[0018] "Body-facing" and "garment-facing" refer to the relative position of an element, or a surface of an element, or a group of elements, respectively. "Body-facing" means that the element or surface is closer to the wearer during wear than any other element or surface. "Garment-facing" means that the element or surface is farther away from the wearer during wear than any other element or surface (i.e., the element or surface is closer to the wearer's garment, which may be worn over the disposable absorbent article).

[0019] "Location" refers to an element being placed in a particular place or position.

[0020] "Bonded" refers to an element being directly affixed to other elements by directly attaching the element to the other elements, and also to an element being indirectly affixed to other elements by attaching the element to intermediate members that are in turn affixed to the other elements.

[0021] "Film" means a sheet-like material in which the length and width of the material significantly exceed the thickness of the material. Typically, a film has a thickness of about 0.5 mm or less.

[0022] "Water-permeable" and "water-impermeable" refer to the permeability of a material in the context of the intended use of the disposable absorbent article. Specifically, the term "water-permeable" refers to a layer or layer structure having holes, openings, and / or interconnected voids that allow liquid water, urine, or synthetic urine to pass through the thickness of the layer or layer structure in the absence of compressive pressure. Conversely, the term "water-impermeable" refers to a layer or layer structure in which liquid water, urine, or synthetic urine cannot pass through the thickness of the layer or layer structure in the absence of compressive pressure (other than natural forces such as gravity). A layer or layer structure that is water-impermeable according to this definition may also be permeable to water vapor, i.e., "vapor-permeable."

[0023] "Extensible" and "stretchable" mean the ability to stretch or increase the width or length of a component in a relaxed state.

[0024] "Elasticated" or "elasticated" means that a component includes at least a portion made from an elastic material.

[0025] The terms "extensible material," "stretchable material," or "stretchable material" are used interchangeably and refer to a material that, upon application of a biasing force, can be stretched to an elongated length of at least about 110% of its original relaxed length (i.e., can be stretched 10% longer than its original length) without rupture or breakage, as measured by EDANA Method 20.2-89, and that, upon removal of the applied force, exhibits a slight recovery of less than about 20% of that elongation without complete rupture or breakage. Such an extensible material is considered "elastic" or "elastomeric" if it recovers at least 40% of its elongation upon release of the applied force. For example, an elastic material with an initial length of 100 mm can be stretched to at least 150 mm and retracts to a length of at least 130 mm (i.e., exhibits 40% recovery) upon removal of the force. An extensible material is considered to be "substantially inelastic" or "substantially non-elastomeric" if, upon release of an applied force, the material recovers less than 40% of its elongation. For example, an extensible material having an initial length of 100 mm can be stretched to at least 150 mm and retracts to a length of at least 145 mm upon removal of the force (i.e., exhibiting 10% recovery).

[0026] The "dimensions," "length," "width," "pitch," "diameter," "aspect ratio," "angle," and "area" of an article are all measured using a ruler or magnifying glass when the article is stretched to a fully extended perimeter W1 according to the "Whole Article Force Measurement Method" herein, unless otherwise specified.

[0027] "Artwork" means a visual representation to the naked eye that has color and is printed or otherwise provided. Printing includes various methods and devices known to those skilled in the art, such as lithography, screen printing, flexography, and gravure inkjet printing techniques.

[0028] As used herein, the term "color" or "tinting" may include any primary color other than white, i.e., black, red, blue, purple, orange, yellow, green, and indigo, as well as any tint or mixture thereof. White is defined by the CIE L * a * b * According to the color system, L of at least 94 * Value, a equal to 0±2 * value, and b equal to 0 ± 2 * It is defined as a color that has a value. DETAILED DESCRIPTION OF THE INVENTION

[0029] Figure 1A is a perspective view of a wearable article (20) of the present invention, Figure 1B is a schematic diagram showing the front side of the wearable article of the present invention in a contracted state, and Figure 2A is a schematic plan view of the wearable article in its flat, uncontracted state, with the seams unbonded and showing the garment-facing side. The wearable article (20) has a longitudinal centerline LX that also serves as a longitudinal axis, and a transverse centerline TX that also serves as a transverse axis. The wearable article (20) has a body-facing side, a garment-facing side, a front elastic belt (84), a back elastic belt (86), a crotch region (30), and side seams (32) that join the front elastic belt (84) and the back elastic belt (86) to form two leg openings and a waist opening.

[0030] The wearable article (20) may be belt-type pants, such as those shown in FIGS. 1A, 1B, 2A, and 2B, comprising a central chassis 38 covering the wearer's crotch region (30), a front elastic belt (84), and a back elastic belt (86) (hereinafter referred to as "front and back elastic belts"), the front and back elastic belts (84, 86) forming separate circular elastic belts (40) extending transversely to define a waist opening. In belt-type pants, the separate circular elastic belts (40) may also be referred to as the elastic belt (40). In belt-type pants such as those shown in FIGS. 1A, 1B, and 2A, the front and back elastic belts (84, 86) and the central chassis (38) join to define leg openings. In the case of belt-type pants, the front elastic belt 84 is the front region (26), the back elastic belt (86) is the back region (28), and the remainder is the crotch region (30). Although not shown, the wearable article (20) may be one-piece pants configured such that the outer cover of the central chassis (38) and the elastic belt (40) are common. In the case of one-piece pants, the portions extending transversely between the side seams (32) are considered the front region (26) and the back region (28), respectively, and the remainder is the crotch region (30). In the case of one-piece pants, the front region (26) is considered the front elastic belt (84), and the back region (28) is considered the back elastic belt (86).

[0031] The central chassis (38) may include a topsheet, a backsheet, an absorbent core (62) disposed between the topsheet and the backsheet, and an outer cover layer (42) for covering the garment-facing side of the backsheet. The topsheet may be a water-permeable substrate. The backsheet may be a water-impermeable film. The outer cover layer (42) may be a nonwoven sheet. The central chassis (38) may contain an absorbent core (62) disposed on the central chassis (38) for absorbing and containing body exudates, as well as an absorbent-material-free region (61) surrounding the periphery of the absorbent core (62). The absorbent-material-free region (61) may be made from the topsheet and / or the backsheet and / or the outer cover layer (42) and / or other parts constituting the central chassis (38). In the embodiment shown in Figure 2A, the central chassis (38) has a generally rectangular shape with side edges (48) extending in the left-right longitudinal direction and end edges (50) extending in the front-to-back transverse direction. The absorbent core (62) may be present throughout the longitudinal dimension of the crotch region and at least partially in the front region (26) or at least partially in both the front and back regions (26, 28). The central chassis (38) may have a front waist panel (52) located in the front region (26) of the absorbent article (20), a back waist panel (54) located in the back region (28), and a crotch panel (56) in the crotch region (30) between the front and back waist panels (52, 54). The center of the front elastic belt (84) is joined to the front waist panel (52) of the central chassis (38), and the center of the back elastic belt (86) is joined to the back waist panel (54) of the central chassis (38), and the front and back elastic belts (84, 86) each have a left side panel and a right side panel (82) that do not overlap with the central chassis (38). The central chassis has a crotch panel (56) located between the front waist panel (52) and the back waist panel (54).

[0032] The absorbent core (62) may include an absorbent layer and an acquisition layer. The absorbent layer is a region containing an absorbent material with a high retention capacity, such as a superabsorbent polymer. The absorbent layer may be substantially free of cellulose. The superabsorbent polymer of the absorbent layer may be disposed between a first material layer and a second material layer immobilized by a fibrous layer of a thermoplastic adhesive material. The first and second material layers may be nonwoven fibrous webs containing synthetic fibers, such as monocomponent fibers of PE, PET, and PP, or multicomponent fibers, such as side-by-side, core / sheath, or island-in-the-sea fibers. Such synthetic fibers may be formed via a spunbond or meltblown process. The acquisition layer promotes the acquisition and distribution of body exudates and may be disposed between the topsheet and the absorbent layer. The acquisition layer may contain cellulose fibers.

[0033] The absorbent layer may be disposed in multiple locations within the absorbent core (62). Portions of the absorbent layer may be configured to be substantially free of absorbent material to form a channel or channels. The channels may be useful for allowing the absorbent core (62) to flex as it swells with fluid, thereby allowing the absorbent article to conform to the wearer's body after expansion and preventing sagging of the article. Channels may also be formed within the acquisition layer and configured to at least partially align in thickness with the channels in the absorbent layer.

[0034] The elastic belt (40) of the article of the present invention acts to dynamically generate and distribute forces that occur during wear. The front and back elastic belts (84, 86) can be joined together only at the side edges (89) to form the side seams (32), the waist opening, and the two leg openings. Each leg opening may have elastic around the periphery of the leg opening. The elastic around the leg openings can be provided by a combination of elastic from the front elastic belt (84), the back elastic belt (86), and the central chassis (38).

[0035] Referring to FIG. 2B , the longitudinal lengths of the backsheet and the outer cover layer (42) may be the same or different. For example, the outer cover layer (42) may have a shorter length compared to the length of the backsheet so that the outer cover layer (42) is not present where the central chassis (38) overlaps the elastic belt (40). Such a configuration may allow the elastic belt to have better breathability. Furthermore, such a configuration may provide cost savings. Furthermore, such a configuration may prevent interference between the elastic belt (40) and the patterns provided on the non-elastic regions (221) of the crotch region (30), as described in further detail below. The transverse widths of the backsheet and the outer cover layer (42) may be the same or different. For example, the backsheet may have a shorter transverse width compared to the transverse width of the outer cover layer (42). Such a configuration may allow the longitudinal side edges (48) of the crotch panel (56), which form part of the leg openings, to have better breathability. Furthermore, such a configuration may provide cost savings.

[0036] The front elastic belt (84) and the back elastic belt (86) are configured to provide elasticity to the belt (40). Referring to Figures 1B, 2A, and 2B, the front elastic belt (84) and the back elastic belt (86) can each be formed by a laminate including a plurality of transversely extending elastics (96), an inner sheet (94), an outer sheet (92), and an outer sheet fold (93), where the outer sheet fold is an extension of the outer sheet material formed by folding the outer sheet material at the distal edges (88) of the front and back elastic belts, and the belt elastics (96) are sandwiched between these two sheets. The front elastic belt (84) and the back elastic belt (86) can each be made only by the elastics (96), the inner sheet (94), the outer sheet (92), and the outer sheet fold (93). Various patterns, discussed below, may be provided on the outer sheet (92). The belt elastics (96) may extend in the transverse direction to provide a circular elastic belt (40) when the front elastic belt (84) and the back elastic belt (86) are joined. At least some of the elastics (96) extend substantially parallel to one another in the transverse direction. All of the elastics (96) may extend substantially parallel to one another in the transverse direction. Such an article may be economically produced. The front and back elastic belts (84, 86) may each have transversely continuous proximal and distal edges, with the proximal edge (90) located closer to the longitudinal center of the article than the distal edge (88). The elastics (96) may be positioned between the front and back elastic belts (84, 86) and at different longitudinal positions of the belts with the same or different denier, spacing, and force.

[0037] Referring to Figure 2A, the transverse width LW of the rear elastic belt (86) in an uncontracted state is the same as the transverse width of the front elastic belt (84) in the same state. Along the overall width LW, the rear elastic belt (86) between the rear distal edge (88) and the rear proximal edge (90) has a longitudinal dimension LB, and the front elastic belt (84) between the front distal edge (88) and the front proximal edge (90) has a longitudinal dimension LF. LB and LF may be the same or different. The shorter of LB and LF is defined as LS.

[0038] Referring to FIG. 2A , LB may be greater than LF. In such a configuration, when the wearable article is assembled to form the waist opening and leg openings, the wearable article (20) is folded along the transverse centerline TX so that the front distal edge (88) is aligned with the back distal edge (88). The front side edge (89) is also aligned with a portion of the back side edge (89). The front elastic belt (84) and the back elastic belt (86) are then joined at the front and back side edges (89) with seams (32). However, the front and back proximal edges (90) do not have to be aligned with one another. The rear proximal edge (90) may be positioned longitudinally closer to the transverse centerline TX than the front proximal edge (90) such that the proximal portion of the rear side panel (82) extends beyond the front proximal edge (90) toward the crotch panel (56) of the central chassis (38). The side edges of the proximal portion of the rear side panel (82) may be unjoined or unattached. Thus, the proximal portion of the rear side panel (82) provides a buttocks cover (95) as shown in FIG. 1B.

[0039] 1B and 2A, the front and back elastic belts (84, 86) are treated to remove their elastic mobility from certain areas to form inelastic regions (221). In each of the front and back elastic belts (84, 86), about 10% to about 40% of the LW and about 15% to about 75% of the LS, or about 30% to about 70% of the LS, has its elastic mobility removed. The inelastic regions (221) may overlap the front and / or back waist panels (52, 54) of the central chassis (38). When the central chassis (38) includes an absorbent core (62), it may be advantageous to remove elastic from certain areas where the front and / or back waist panels (52, 54) overlap, in that elasticity in the front and / or back areas overlying the absorbent core (62) may cause the absorbent layer or layers of the absorbent core (62) to bunch up, interfering with the close fit of the central chassis (38) to the wearer.

[0040] The remainder of the front elastic belt (84) and the back elastic belt (86) each include an elastic region that extends transversely at least along the waist opening to provide a circumferential elastic region that defines an upper gathered region (220).

[0041] Referring to Figure 3A, the laminate can be made by bonding the elastic member (96) to at least one of the inner sheet (94) and the outer sheet (92) via a combination of elastic bonds (230) and vertical bonds (234). In Figure 3A, the front elastic belt (84) is shown with the elastic member (96) and the elastic bonds (230) represented by solid lines. In Figure 3A, the vertical bonds (234) are only represented on the right side of the front elastic belt (84), and the side seam (32) is shown unbonded.

[0042] By elastic bonds (230) herein is meant bonds that connect the elastic members (96) along the side edges (89) of the front and back elastic belts (84, 86). The elastic bonds (230) may be applied continuously to each elastic member (96) adjacent to the side edges (89) of the front and back elastic belts (84, 86) in the direction of stretch for a length of at least about 10 mm, or from about 10 mm to about 60 mm, including the length designed for the side seams. The elastic bonds (230) provide a relatively strong bond to the elastic members (96), thus securing the elastic members (96) firmly within the laminate. The securing may be assisted by side seams. A certain percentage or a higher percentage of the dimensions of the elastic bonds (230) along the side edges (89) may be seamed. Elastic bonds may also be utilized as an effective process for deactivating limited transverse dimensions of the elastic members (96). 2A and 3A, the elastic members (96) may be deactivated where they overlap the absorbent core (62). In addition to the side edge regions, elastic bonds (230T) may be provided on either side of a certain transverse dimension of the elastic members (96), which are designed to be deactivated, and the portion of the elastic members between the elastic bonds (230T) are cut and deactivated. The deactivated portions of the elastic members are not shown. Such deactivation may be referred to herein as an abdominal cut, and the deactivation areas may coincide with the deactivation areas (221).

[0043] As used herein, vertical bonds (234) refer to bonds applied at transverse intervals to at least one of the inner sheet (94) and the outer sheet (92) to intermittently connect the inner sheet (94) and the outer sheet (92). The vertical bonds (234) can also connect the elastic members (96) to at least one of the inner sheet (94) and the outer sheet (92). The vertical bonds (234) may be provided only on the outer sheet (92). Referring to FIG. 3A, the vertical bonds (234) may be provided in a pattern over the entire area of ​​the laminate. By providing the vertical bonds (234) in a pattern over the entire area of ​​the laminate, the vertical bonds (234) can function as bonds between the inner and outer sheets (92, 94) in the areas where the elastic members (96) are cut. The vertical joints 234 may be located in the area adjacent to the side edge 89, and thus in the overlapping area where the elastic joints 230 are located. Alternatively, the vertical joints 234 may be located only in areas where the elastic joints 230 are not located. The vertical joints 234 may be located at least in areas where the elastic members 96 are operatively elastic, where the elastic joints 230 are not located.

[0044] Referring to Figure 4A, the vertical bonds (234) are observed in the thickness direction of the laminate along a single elastic member (96) in a state stretched in the transverse direction, and Figure 4A shows only the outer sheet (92), vertical bonds (234), and elastic member (96), with the vertical bonds (234) being provided on the outer sheet (92). The vertical bonds (234) may have a transverse dimension VG2 and are provided as a continuous longitudinally aligned pattern, with each longitudinal pattern of vertical bonds (234) spaced apart from one another at a transverse pitch VG1, where VG1 may be from about 2 mm to about 15 mm and VG2 may be from about 0.2 mm to about 7 mm. Focusing on a single elastic member (96), the vertical bonds (234) can provide an intermittent bond between the elastic member (96) and one of the inner sheet (94) and the outer sheet (92), or between the elastic member (96) and the outer sheet (92). This contrasts with elastic bonds (230), which are provided continuously along a specific length of the elastic member (96) in the direction of stretch. Thus, in areas where the elastic member (96) is only intermittently bonded to one of the inner sheet (94) and the outer sheet (92), the portion of the elastic member (96) between the transverse vertical bonds (234) is not attached to any other portion of the laminate. In Figure 4A, the elastic member (96) is bonded to the outer sheet (92). Referring to Figure 4B, when the elastic member (96) contracts, this causes the unattached portion of the outer sheet (92) to fold away from the elastic member (96), forming gathers. Therefore, the outer sheet (92) has fewer restrictions in making gathers compared to the area where the elastic joints (230) are applied.

[0045] Without being bound by theory, it is believed that the inner sheet (94) and outer sheet (92) have less restriction on the elastic members (96), thereby contributing to the creation of improved regularity in the gathers, and in that regard, a significant amount of the inner and outer sheet materials (92, 94) present between the vertical bonds (234) is available to create continuous gathers in the longitudinal direction. Without being bound by theory, it is also believed that the inner and outer sheet materials (92, 94) have less restriction on the elastic members (96), thereby improving the extensibility of the elastic members (96) and providing ease of application. Compared to an elastic belt made solely with elastic bonds (230) in which all of the elastic members (96) are continuously bonded, the elastic belt (40) of the present invention may have a lower circumferential force at stretch, as measured by the method herein. Furthermore, despite such a relatively low circumferential force at stretch, the elastic belt (40) of the present invention can maintain a suitable circumferential force at fit, as measured by the method herein. Without being bound by theory, it is believed that the inner and outer sheet materials (92, 94) having less restriction on the elastic members (96) improves the breathability of the overall laminate, leading to improved skin health. Without being bound by theory, it is also believed that the vertical bonds (234) provide a configuration in which, as the elastic belt (40) contracts, a greater proportion of the inner and outer sheet materials (92, 94) is available to form the outer surface of the laminate, while the elastic members (96) remain positioned within the thickness of the laminate. This provides the laminate with improved resilience and thickness, thus imparting improved comfort and softness when worn. Furthermore, without being bound by theory, it is believed that, as the elastic belt (40) contracts, a greater proportion of the inner and outer sheet materials (92, 94) are available to form the outer surface of the laminate with greater regularity, providing the body-facing surface of the elastic belt (40) with greater longitudinal stiffness, thus contributing to an improved fit to prevent sagging. Furthermore, as the elastic belt (40) contracts, the elastic members become less visible, further enhancing the aesthetically pleasing regularity of the gathers.

[0046] To ensure that a significant amount of the inner and outer sheet material (92, 94) between the vertical joints (234) is available for gathering in the transverse direction, VG1 can be from about 2 times to about 20 times, or from about 3.5 times to about 10 times, VG2.

[0047] Bonding may be achieved by any method known in the art, such as the use of hot melt adhesives, heat energy, and ultrasonic energy. Bond strength may be controlled by the area of ​​the bond or by different adhesion or energy levels provided by the bond, for example, by adjusting the amount and strength of the adhesive. The bond strengths of the elastic bonds (230) and the vertical bonds (234) may be the same or different. The elastic bonds (230) and the vertical bonds (234) may be provided by the same hot melt adhesive.

[0048] The vertical bonds (234) may be continuous lines extending longitudinally. Referring to FIG. 3B, the vertical bonds (234) may be rows of separate bonds aligned longitudinally. Each separate vertical bond (234) may have a longitudinal dimension of about 0.5 mm to about 10 mm and a longitudinal pitch of about 1 mm to about 10 mm, or about 0.8 mm to about 5 mm. By providing the vertical bonds (234) in a row of separate bonds, the overall bond area can be reduced. This is advantageous in that the bonds can be more rigidly provided to the inner and outer sheet materials (92, 94), maintaining a soft feel for the laminate. Furthermore, this can save bonding material or energy. The separate vertical bonds (234) may be provided at an appropriate longitudinal pitch so that there is at least one separate bond connecting each elastic member (96), but this is not required. Rather, it is essential that at least one separate vertical bond (234) be present along each longitudinal direction of the elastic member (96) so that adjacent elastic members (96) do not come into contact with each other. As long as at least one separate vertical bond (234) is present along each longitudinal direction of the elastic member (96), the elastic bonds (230) provide a secure bond for the elastic members (96) along the periphery of the side seams and inelastic regions (221), thereby preventing the elastic members (96) from moving away from their intended positions. It is not necessary for the entire front elastic belt (84) or the entire back elastic belt (86) to have any elastic members (96) connected to the inner sheet (94) or outer sheet (92) by separate vertical bonds (234). In the entire front elastic belt (84) or the entire back elastic belt (86), at least 1 to about 50% of the elastic members (96) may be joined to the inner sheet (94) or the outer sheet (92) by separate vertical bonds (234). In the individual elastic members (96) along the activated length, some portions may be joined by separate vertical bonds (234) and some portions may remain unjoined by separate vertical bonds (234).

[0049] Referring to Figure 2A, belt pants may be provided with end seals at the proximal edges (90) of the front and back elastic belts (84, 86) to maintain the inner and outer sheets (92, 94) closed at the proximal edges (90), thus preventing the elastic members (96) from being accessible. Such inaccessibility of the elastic members (96) may be particularly advantageous when the article is intended for a younger wearer. Alternatively or additionally, the elastic members (96) located nearest the proximal edges (90) may be provided with operatively elastic bonds along the transverse dimension of the elastic members (96).

[0050] Referring to FIG. 2A, the elastic member (96) may be made of a plurality of elastic strands (96) extending parallel to one another in the transverse direction, with the laminate having at least a region in which the elastic strands (96) have a longitudinal pitch of about 2 mm to about 20 mm, or about 3 mm to about 12 mm, or about 3 mm to about 7 mm. At least a portion of the upper gathered region (220) may have elastic strands (96) arranged at a longitudinal pitch of about 3 mm to about 7 mm. Without being bound by theory, it is believed that such a longitudinal pitch of the elastic strands (96), combined with the transverse pitch of the vertical bonds (234) as described above, contributes to the creation of improved regularity in the gathers by providing adequate longitudinal continuity of material provided by the rigidity of the inner and outer sheet materials (92, 94). At least a portion of the upper gathered region (220) may have elastic strands (96) arranged at a constant longitudinal pitch, the constant pitch being from about 2 mm to about 20 mm, or from about 3 mm to about 12 mm, or from about 3 mm to about 7 mm, with a deviation of about 1.5 mm or less. Without being bound by theory, it is believed that such a constant pitch of the elastic strands (96) contributes to the creation of gathers with improved regularity and continuity.

[0051] The front and back elastic belts (84, 86) can be made by having continuous inner and outer sheet materials and continuous elastic strands extending along the transverse axis of the article and bonding them together via elastic bonds (230) and vertical bonds (234). During manufacturing, the continuous inner and outer sheet materials and continuous elastic strands may be transported in a machine direction, with the machine direction of manufacture coinciding with the transverse axis TX of the article. In such a manufacturing process, the vertical bonds (234) are provided intermittently spaced apart in the machine direction of manufacture by a pitch of VG1, either continuously or discretely aligned across the machine direction. The longitudinal pattern of the vertical bonds (234) may be transverse to the machine direction of manufacture, i.e., coincident with the longitudinal axis LX of the article, or may be slightly tilted for better control of the process, especially when the vertical bonds (234) are provided by applying bonds with rotating rollers. The vertical bonds (234) may be inclined transverse to the machine direction of manufacture, i.e., from the longitudinal axis LX of the article, at an angle of from about 0.1 to about 30 degrees in either a clockwise or counterclockwise direction, or from about 0.1 to about 15 degrees in either a clockwise or counterclockwise direction.

[0052] The overall tensile stress (N / m) of the front and back elastic belts (84, 86), respectively, can be profiled to provide the functional benefits of the present invention, such as stretchability and ease of application, while also maintaining a constant force during wear to prevent the article from sagging after being loaded. When the elasticity of the front and back elastic belts (84, 86) is provided by a plurality of elastic members (96) extending in the transverse direction, the tensile stress can be adjusted by one or more of the following methods: 1) the elongation rate of the elastic members (96), 2) the density (dtex) of the elastic members (96), 3) the longitudinal spacing of the plurality of elastic members (96), and 4) the effective elastic length in the transverse direction of the elastic members (96). By elongation rate, "0% elongation rate" refers to the original length of the elastic members. When a portion of the elastic members (96) has had its elasticity removed, the remaining portion of the unaffected elastic members capable of providing elasticity is defined as the "effective elastic length of the elastic members."

[0053] Referring to Figure 2A, the front and back elastic belts (26, 28) can each be divided into four transversely extending zones, defined by their location from the distal edge (88) to the proximal edge (90) relative to a proportion of the seam length LS. In the example of Figure 2A, the entire length of the belt side edge (89) of the front region (26) is the front elastic belt (84), which, when joined with a certain length of the belt side edge (89) of the back region (28), is the back elastic belt (86), which defines the seam length LS. If the seam length LS is considered 0% at the distal edge (88) of the side seam (32) and 100% at the proximal edge (90), the zones are defined as follows: 0-25% is the waist zone (102), 25-50% is the distal abdominal zone (104), 50-85% is the proximal abdominal zone (106), and 85-100% is the leg zone (108), etc. If elastic members are present located 25% from the distal edge (88), such elastic members are considered to be included in the waist zone (102). If elastic members are present 50% from the distal edge (88) or 85% from the distal edge (88), such elastic members are considered to be included in the proximal abdominal zone (106).

[0054] In the article of the present invention, the tensile stress in the front proximal abdominal zone (106) may be higher than the tensile stress in any of the front waist zone (102), the front distal abdominal zone (104), or the front leg zone (108). The tensile stress in the front proximal abdominal zone (106) may be higher than the tensile stress in any other zone, either front or back. The tensile stress in the back distal abdominal zone (104) may be higher than the tensile stress in any of the back waist zone (102), the back proximal abdominal zone (106), or the back leg zone (108). Comparing the four zones of each of the front elastic belt and the back elastic belt, the tensile stress may be greatest in the front proximal abdominal zone (106), followed by the back distal abdominal zone (104). Without being bound by theory, such zoned profiling of tensile stress is believed to provide the article of the present invention with an elastic belt (40) that conforms well to the human body, particularly the lower torso of an infant under 36 months of age, thereby providing a good fit and comfort to the wearer without compromising on slack or leak resistance. That is, the front proximal abdominal zone (106) is subjected to high tensile stress, which secures the article against the wearer's trochanters while leaving more area in the rear proximal abdominal zone (106) to accommodate the wearer's buttocks. The upper gathered region (220) may be provided with a relatively low tensile stress, as long as the article is securely secured at the trochanters. Without being bound by theory, such a relatively low tensile stress is believed to contribute to improved regularity of the gathers and to providing the upper gathered region (220) with a softer fit.

[0055] In the present invention, at least one of the inner sheet (92) and the outer sheet (94) may further include a plurality of deformations, which are aligned longitudinally. The deformations may be holes, slits, impressions, embossments, protrusions, or any other permanent deformations in the nonwoven material for creating the inner sheet (92) and / or the outer sheet (94), as long as they are aligned longitudinally. For example, referring to FIG. 5A, the deformations on the outer sheet (92) are represented in the form of holes. Each longitudinal deformation pattern may be spaced apart from one another at a transverse pitch of DF1, where VG1 is greater than DF1, or VG1 is at least about 1.5 times or at least about 2 times DF1. Without being bound by theory, such deformations associated with the vertical bonds (234) assist the nonwoven material in folding the inner sheet (92) and / or the outer sheet (94) within the dimension VG1 and creating continuous folds in the longitudinal direction. This improves the regularity of the gathers. The longitudinal deformation pattern may or may not match the longitudinal pattern of the vertical joints (234). In fact, the present invention discovered that even if the longitudinal deformation pattern does not match the longitudinal pattern of the vertical joints (234), the regularity of the gathers is still improved. Matching the longitudinal deformation pattern with the longitudinal pattern of the vertical joints (234) may require process precision, and such matching may be omitted. Even if the longitudinal deformation pattern does not match the longitudinal pattern of the vertical joints (234), by providing DF1 and VG1 in a relationship other than a multiple integer, the majority of the longitudinal deformation pattern fits within the longitudinal pattern of the vertical joints (234), assisting in gather formation.

[0056] The deformations may be a continuous longitudinal line or a row of discrete deformations that are longitudinally aligned and spaced apart with a longitudinal pitch of DF2, where DF2 is less than or equal to DF1, as in FIG. 5A. By providing the deformations in a row of discrete deformations, the overall area weakened or stiffened by the deformations can be reduced. Having DF2 equal to or smaller than DF1 facilitates longitudinal folding of the inner and outer sheet materials (92, 94), as described above.

[0057] The deformations may be holes on the outer sheet, which are circular, elliptical, or polyhedral in shape, have a minor radius of at least about 0.1 mm, or from about 0.1 mm to about 1.5 mm, or from about 0.4 mm to about 1.5 mm, and have an aspect ratio of less than about 3, or less than about 2. By minor radius in this specification, we mean half the radius of a circle, the minor radius of an ellipse, or the shortest dimension of a polyhedron. Holes of such size and shape can be visible to the naked eye on the garment-facing surface, thus contributing to the breathability and high quality of the gathers and the entire laminate. Therefore, holes may be provided on the outer sheet (92). Holes may also be provided on both the inner and outer sheets (92, 94) to improve breathability. Furthermore, by providing VG1 greater than DF1, the holes are positioned on the folds as described above, thus improving the visibility of the holes even when the gathers are in a contracted state. FIG. 5B is a plan view of an elastic belt of the present invention in a stretched state, while FIG. 5C shows the same elastic belt in a contracted state. In the elastic belts of FIGS. 5B-5C, VG1 is approximately 1.5 times DF1. As can be seen in FIG. 5C, by providing such a relationship between VG1 and DF1, at least one longitudinal row of holes is continuously folded in a longitudinal manner to provide continuous longitudinal gathers, with holes located near the peaks of each gather. This improves the visibility of the holes. This can further improve breathability and the sensation of breathability.

[0058] The front and back inelastic regions (221) have elastic removed and little or no gathering, so the material forming the garment-facing side of the inelastic regions (221) has high visibility. Furthermore, the front and back inelastic regions (221) are adjacent to the upper gathered region (220) and the crotch region (30) and are positioned approximately at the longitudinal and transverse centers of the article when worn. Therefore, the aesthetic effect of the inelastic regions (221) blending with the rest of the article provides a particular sense of quality for the overall article. The aesthetic effect of the inelastic regions (221) can blend with the upper gathered region (220) to enhance the directionality of the longitudinally continuous gathering of the upper gathered region (220). Additionally or alternatively, the aesthetic effect of the inelastic regions (221) can blend with the crotch region (30) to enhance the unitary, underwear-like appearance of the article. Such aesthetic effects are expected to provide the perception of a high quality article.

[0059] The inelastic region (221) and the crotch region (30) are provided with an aesthetic or geometric pattern. By aesthetic pattern, in this invention, is meant a repeating visual presentation, which may be a geometric pattern or a printed pattern, so long as the repeating visual presentation is visible to the naked eye from the garment-facing side. By geometric pattern, in this invention, is meant a permanent modification to the material forming the garment-facing side of the inelastic region (221), which is a repeating visual presentation that is visible to the naked eye from the garment-facing side. The permanent modification may be holes, embossments, and other textural modifications provided on the garment-facing side of the article. The garment-facing side of the crotch region (30) may be the outer cover layer (42). Permanent modifications that are not visible to the naked eye are not considered geometric patterns herein. Permanent deformations that are not visible to the naked eye include those that are too subtle or minute to be perceived by the naked eye, those that are uniform enough to be imperceptible, and those that are not located on the garment-facing surface. The permanent deformations may be the same or different deformations as those described above to assist in gathering. The printed pattern may be printed in color directly on the garment-facing surface of the inelastic region (221) or crotch region (30), and / or may be printed on a layer that overlies the inelastic region (221) or crotch region (30) and is visible through the overlying layer. For example, the printed pattern may be on the garment-facing surface of the inner sheet (94). For example, the printed pattern may be on a layer of the central chassis that overlies the inelastic region (221) or crotch region (30).

[0060] The inelastic region (221) herein is provided with a first belt pattern FBP. The first belt pattern may have a longitudinal orientation according to the measurement methods described herein. The longitudinal orientation can be measured by observation. Alternatively or additionally, the longitudinal orientation may be determined by image analysis, and the first belt pattern FBP may have a longitudinal variance of at least about 35%, or at least about 50%, or at least about 70%, and a transverse variance of not more than about 35%, or not more than about 20%, or not more than about 10%, according to the measurement methods described herein. The longitudinal orientation described herein refers to the impression of longitudinal orientation perceived by the naked eye when observing the repeated visual presentation of the pattern. For example, referring to Figures 6A and 6B, an article of the present invention is shown in a contracted state viewed from the front side. The inelastic region (221) of the front elastic belt is provided with holes of the first belt pattern FBP that are visible from the garment-facing side. The holes are aligned in approximately straight lines extending longitudinally, with each such line repeated transversely at intervals. The first belt pattern FBP of Figures 6A and 6B has a longitudinal orientation.

[0061] 11A-11D, what is specifically meant by longitudinal orientation as measured by observation is explained. First, a basic unit, which is the smallest complete unit of deformations or prints that are repeated to create a pattern, is identified. The pattern can be a regular and continuous repeating pattern of deformations or prints with consistent spacing in both the longitudinal and transverse directions without a specific boundary of the pattern. Such a regular and continuous repeating pattern with consistent spacing is referred to as a random repeating pattern. The basic unit of a random repeating pattern is defined as a group of at least three or at least four individual deformations or prints that can surround a specific area defined as a basic unit area. For example, FIG. 11A shows a random repeating pattern with a basic unit consisting of four deformations, each of which has a circular shape, which may be a hole, and the basic unit area is approximately rectangular. In another example, FIG. 11B shows a random repeating pattern with a basic unit consisting of four deformations, each of which has a bar shape, which may be an embossment, and the basic unit area is approximately diamond-shaped. In yet another example, Figure 11C shows a random repeating pattern having a basic unit consisting of four deformations, each having an S-shape that may be a slit, and the basic unit area is approximately diamond-shaped. In yet another example, Figure 11D shows a random repeating pattern having a basic unit consisting of approximately 50 deformations arranged in two sine waves, each having a circular shape that may be a hole, and the basic unit area is approximately corrugated with a substantially constant transverse dimension. Within the basic unit, the closest adjacent deformations or prints in the longitudinal and transverse directions are identified and the spacing between them is measured. These patterns with an X-spacing at least 10% longer than the Y-spacing are considered to have longitudinal orientation. Patterns with an X-spacing less than 110% of the Y-spacing are considered to have no longitudinal orientation.

[0062] Longitudinal orientation can be determined by image analysis, as discussed in more detail in the Measurement section below. Longitudinal / Transverse Variance is for extracting a longitudinally continuous and transversely continuous impression of a pattern by utilizing image analysis to define the variance of a particular pattern in the longitudinal and transverse directions.

[0063] Without being bound by theory, by providing the first belt pattern FBP with a longitudinal orientation, the inelastic region (221) appears to blend in with the upper gathered region (220) and improves the directionality of the longitudinally continuous gathers in the upper gathered region (220).

[0064] The crotch region (30) herein is provided with a first crotch pattern FCP. The first crotch pattern FCP may be an aesthetic pattern or a geometric pattern. The first crotch pattern FCP may have a longitudinal orientation according to the measurement methods herein. As with the first belt pattern FBP, the longitudinal orientation of the first crotch pattern FCP can be determined by observational measurement and / or image analysis. What is described by longitudinal orientation according to the measurement methods herein is the impression of longitudinal orientation perceived by the naked eye when observing the repeated visual presentation of the pattern, similar to that discussed for the first belt pattern FBP. Referring to FIG. 6A, the crotch region (30) is visible from the garment-facing side and is provided with holes for the first crotch pattern FCP similar to those of the first belt pattern FBP. The first crotch pattern FCP also has a longitudinal orientation. 6B, 11D, and the measurement methods below, the crotch region (30) of Figure 6B is provided with holes in the first crotch pattern FCP that are not similar to those in the first belt pattern FBP. Furthermore, the holes in the first crotch pattern FCP have a longitudinal orientation and therefore appear aligned with the first belt pattern FBP.

[0065] By providing both the first belt pattern FBP and the first crotch pattern FCP with a longitudinal orientation, the inelastic region (221) appears to blend in with the crotch region (30), enhancing the article's integrated, underwear-like appearance. Such a combination of the first belt pattern FBP and the first crotch pattern FCP is particularly useful for belted pants in which the annular elastic belt (40) and the central chassis (38) are provided as distinct parts. By providing both the first belt pattern FBP and the first crotch pattern FCP with a longitudinal orientation, the visibility of the boundary between the distinct parts can be reduced. Both the first belt pattern FBP and the first crotch pattern FCP may be geometric patterns.

[0066] The first belt pattern FBP and the first crotch pattern FCP may have a common element. By having a common element, it is meant that the basic units of the first belt pattern FBP and the first crotch pattern FCP are the same or similar according to the measurement method of this specification. For example, the first belt pattern FBP and the first crotch pattern FCP in Fig. 6A have a common element, which is a linear arrangement of holes in the longitudinal direction.

[0067] The common elements may be represented in different sizes where the basic units are geometrically similar. The common elements may be arranged with similar directional orientation, color, and density. For example, referring to Figure 7, the cloud-like patterns of the second belt pattern SBP and the second crotch pattern SCP are similar but are provided with clouds of different sizes. The cloud-like patterns may function as common elements.

[0068] The common elements may be provided in different ways. For example, a specific element provided as a geometric pattern in the first belt pattern FBP may be provided as a printed pattern in the first crotch pattern FCP. In another example, a specific element provided as an embossment in the first belt pattern FBP may be provided as a hole in the first crotch pattern FCP.

[0069] Referring to Figure 6B, the crotch region (30) may be provided with holes in the first crotch pattern FCP that are different from those in the first belt pattern FBP. Furthermore, if the holes in both the first belt pattern FBP and the first crotch pattern FCP have a longitudinal orientation, a unified appearance is provided. However, in such a situation, measures may be taken to ensure that the front and back elastic belts (84, 86) overlap the central chassis (38) and the first crotch pattern FCP does not interfere with the appearance of the first belt pattern FBP.

[0070] To prevent the interference discussed above, the front or back elastic belt (84, 86) may be provided with an opacity of at least about 25%, or at least about 45%, as measured herein. By providing such opacity and providing the first belt pattern FBP with a longitudinal orientation, it is difficult to see through the material that makes up the belt material, and therefore difficult to identify the first crotch pattern FCP through the belt material.

[0071] Referring to FIG. 2B , to prevent the interference discussed above, the configuration of the garment-facing surface of the central chassis (38) may be adjusted relative to the front and back elastic belts (84, 86). The outer cover layer (42) may be the garment-facing surface of the crotch region (30) and may be provided with a first crotch pattern FCP. The outer cover layer (42) may extend only partially in the longitudinal direction of the front waist panel (52) and the back waist panel (54), leaving distal portions of the front waist panel (52) and the back waist panel (54) free of the outer cover layer (42). That is, the longitudinal length of the outer cover layer (42) may be longer than the longitudinal length of the crotch panel (56) and shorter than the longitudinal length of the backsheet (60). In such a configuration, the distal portions of the front waist panel (52) and the back waist panel (54) are free of the outer cover layer (42). Therefore, looking at the layers of elements between the garment-facing surface of the central chassis (38) and the backsheet (60) in Figure 2B, there is only a very small overlap area (34) that is disposed on the waist panel (52) where the outer cover layer (42) is located. The longitudinal lengths of the overlap areas (34) of the front elastic belt (84) and the back elastic belt (86) can be made as short as possible, for example, less than about 20 mm, or less than about 15 mm, or less than about 10 mm, respectively.

[0072] The inelastic region (221) may further include a second belt pattern (SBP). The second belt pattern (SBP) is a pattern that differs from the first belt pattern (FBP) by either a visual presentation that is provided in a different manner or a similar pattern, as discussed above. By a similar pattern provided in a different manner, it is meant, for example, a first belt pattern (FBP) provided by embossing and a second belt pattern (SBP) provided by a color that matches the embossing. The second belt pattern (SBP) may be an aesthetic pattern or a geometric pattern. The second belt pattern (SBP) may have elements in common with the first belt pattern (FBP) or the first crotch pattern (FCP). The crotch region (30) may further include a second crotch pattern (SCP). The second crotch pattern (SCP) is a pattern that differs from the first crotch pattern (FCP) by either a visual presentation that is provided in a different manner or a similar pattern, as discussed above. The second crotch pattern (SCP) may be an aesthetic pattern or a geometric pattern. The second crotch pattern SCP may have elements in common with the first belt pattern FBP or the first crotch pattern FCP. The second belt pattern SBP and the second crotch pattern SCP may also have elements in common. Referring to Figure 7, the first belt pattern FBP and the first crotch pattern FCP are longitudinally oriented holes with common elements, and the second belt pattern SBP and the second crotch pattern SCP are an array of holes representing clouds, although the clouds do not necessarily have a longitudinal orientation. Referring to Figure 8, the first belt pattern FBP and the first crotch pattern FCP are longitudinally oriented holes with common elements, and the second belt pattern SBP and the second crotch pattern SCP are also longitudinally oriented embossments with common elements.

[0073] The first belt pattern FBP, first crotch pattern FCP, second belt pattern SBP, and second crotch pattern SCP may each have a pattern density according to the measurements described herein. A particular pattern's pattern density can be selected to provide a particular aesthetic effect. For example, the pattern densities of the first belt pattern FBP and the first crotch pattern FCP may be made to differ by less than about 10 points so that the inelastic region (221) blends in with the crotch region (30) and enhances the article's integrated, underwear-like appearance. In belted pants, this can reduce the visibility of the boundaries between different portions. In another example, the pattern density may be gradually decreased from the distal edge (88) toward the proximal edge (90) and further toward the crotch region (30).

[0074] Referring to Figure 6A, when the first belt pattern FBP and the first crotch pattern FCP have common elements, are the same or very similar to each other, and have a difference in pattern density of less than about 10 points, a highly harmonious appearance can be provided. Such a highly harmonious appearance can result in a neatly finished product while also resulting in a low level of pattern intentionality. Referring to Figure 7, adding a second belt pattern FBP and a second crotch pattern SCP to the pattern combination of Figure 6A can help provide accents and / or intentionality to the highly harmonious appearance of Figure 6A.

[0075] The first belt pattern FBP and the first crotch pattern FCP are approximately 16 mm apart. 2 ~about 200mm 2A high-order pattern HOP having area dimensions of 100 mm can be formed, where the first belt pattern FBP and the first crotch pattern FCP are geometric patterns having common elements, and both the first belt pattern FBP and the first crotch pattern FCP have a non-directional orientation according to the measurement method described herein. By non-directional orientation, it is meant an impression that the pattern is not oriented in either the longitudinal or transverse direction. The directional orientation of the high-order pattern HOP is determined by image analysis according to the measurement method described herein. Specifically, the non-directional orientation has a longitudinal variance (% variance at 90 degrees) of less than about 35% and a transverse variance (% variance at 0 degrees) of less than about 35%. Specifically, the non-directional orientation may have a longitudinal variance of less than about 15% and a transverse variance of less than about 15%. What is meant by the high-order pattern HOP is a pattern having inconsistent spacing between deformations, unlike the random repeating units described above. The inconsistent spacing may alternate or vary. Due to inconsistent spacing, the pattern can provide a presentation of shapes with dimensions larger than the dimensions of the individual deformations. Referring to FIG. 9A, first belt pattern FBP and first crotch pattern FCP have seven deformations arranged in a pattern having a circular shape. The deformations may be holes. Referring to FIG. 9B, first belt pattern FBP and first crotch pattern FCP have 12 deformations arranged in a diamond shape with an opening in the center. The deformations may be holes. Referring to FIG. 9C, first belt pattern FBP and first crotch pattern FCP have 26 deformations arranged like two leaves with a stem connecting them. The deformations may be holes. 9D, the first belt pattern FBP and the first crotch pattern FCP have 80 deformations arranged in a chain-like configuration, and the second belt pattern SBP and the second crotch pattern SCP each have 16 deformations arranged in a heart-like configuration surrounded by chains like the first belt pattern FBP and the first crotch pattern FCP. All such deformations may be holes.Alternatively, the heart-shaped second belt pattern SBP or second crotch pattern SCP may be provided by embossing or printing.

[0076] The area dimensions of the higher-order pattern HOP are obtained as follows. First, the basic pattern of the higher-order pattern HOP is identified. By basic pattern, for example, the circle shape in FIG. 9A, the diamond shape in FIG. 9B, the two leaves and stem shape in FIG. 9C, the heart shape in FIG. 9D, or the chain shape in FIG. 9D is meant. Such basic patterns may or may not share elements with neighboring patterns. The center point of one basic pattern is identified as C. Due to the non-directional orientation of the higher-order pattern HOP, the four center points of four different higher-order pattern HOPs that are closest to each other can be extracted. The patterns closest to the basic pattern and / or the patterns that share elements with the basic pattern are identified. The imaginary lines connecting the four center points represent a rectangle, typically a parallelogram, rhombus, or square, and define the HOP unit. If it is possible to draw more than one type of rectangle using the four center points, the rectangle with the smallest area is identified and defined as the HOP unit. The HOP unit of the present invention has an area of ​​approximately 16 mm. 2 ~about 200mm 2 It has an area of

[0077] Referring to FIG. 9B, the center point of the higher-order pattern HOP is the central opening and can be identified as C. The pattern closest to the basic pattern is identified. The imaginary lines connecting the four center points represent a square, defining the HOP unit of the pattern in FIG. 9B. Referring to FIG. 9C, the center point of the higher-order pattern HOP is the connection point of two oppositely extending leaf-like shapes and can be identified as C. The pattern closest to the basic pattern is identified. The imaginary lines connecting the four center points represent a square, defining the HOP unit of the pattern in FIG. 9C. Referring to FIG. 9D, the center point of the higher-order pattern HOP is the center of a chain-like shape and can be identified as C. The pattern closest to the basic pattern is identified. The imaginary lines connecting the four center points represent a diamond-shaped shape, defining the HOP unit of the pattern in FIG. 9D. In FIGS. 9B, 9C, and 9D, the HOP unit area is outlined and marked, respectively. The individual deformations of FIGS. 9A-9D may have a diameter of about 0.4 mm to about 1.5 mm, and may be about 16 mm. 2 ~about 200mm 2 By providing HOP units in such area dimensions, the pattern is well distinguishable by the naked eye, the pattern repetition is well recognized, and a high quality aesthetic appearance is provided.

[0078] By providing both the first belt pattern FBP and the first crotch pattern FCP with a non-directional orientation and further having the common element of the higher order pattern HOP, the inelastic region (221) appears to blend in with the crotch region (30) and enhances the uniform, underwear-like appearance of the article. In belt-type pants, the visibility of the boundaries between different portions can be reduced.

[0079] 1. Whole article strength measurement method Measure force using an electric tensile tester equipped with a computer interface, such as an MTS Criterion C42 running TestWorks 4 Software (available from MTS SYSTEMS (CHINA) CO., LTD.) or equivalent equipment. Select a load cell so that the resulting force on the specimen being tested is between 10% and 90% of the capacity of the load cell used. Calibrate the equipment according to the manufacturer's instructions. All tests are performed in a room maintained at 23±2°C and 50±5% relative humidity.

[0080] The tensile tester is fitted with hanger-type specimen holding fixtures (300) as shown in Figure 10. Each fixture has a rigid, straight, rubber-coated horizontal bar section (302) to prevent specimen slippage during testing. The outer diameter of the bar (including the rubber coating) of the horizontal bar section is 10.0 mm. The central axes of the horizontal bar sections (302) are configured to remain parallel and in the same vertical plane throughout the entire test. The gauge circumference is determined by the following formula: Reference perimeter = 2 × (H + D + πD / 2) where H is the vertical gap between the horizontal bar sections (302) and D is the outer diameter of the bar.

[0081] The device is configured to perform the following steps:

[0082] [Table 1]

[0083] Insert the article (20) sample onto the upper horizontal bar portion (302) so that the bar passes through the waist opening and one leg opening of the article. Raise the crosshead until the specimen hangs above the lower bar and does not touch the lower bar (302). Tare the load cell and lower the crosshead so that the lower bar (302) can be inserted through the waist opening and the other leg opening without stretching the article. Adjust the article so that its longitudinal centerline (LX) is in a horizontal plane, midway between the upper and lower bars (302). The center of the side portion in contact with the bar (302) is aligned on the same vertical axis as the load cell of the instrument. While holding the article in place by hand if necessary, carefully avoid applying unnecessary force, slowly raise the crosshead until a force of 0.05 to 0.1 N is reached. The gauge circumference at this point is the initial gauge circumference. The test is started by moving the crosshead upward at 254 mm / min until a force of 19.6 N is obtained, then the crosshead is immediately returned to the initial gauge circumference at the same rate. The maximum circumference at 19.6 N and the force at 70% of the maximum circumference during the loaded and unloaded segments of the test are recorded.

[0084] The maximum circumference (mm) at 19.6 N is defined as the fully extended circumference W1. The fully extended circumference (mm) x 0.7 is defined as the 70% extended circumference W2. The force (N) during the loaded segment of the test at 70% extended circumference is defined as the extended circumference force. The force (N) during the unloaded segment of the test at 70% extended circumference is defined as the fitted circumference force. Five samples were analyzed and their averages were calculated and reported to the nearest 1 mm or 0.01 N, respectively.

[0085] 2. Opacity The opacity of a material or combination of materials is the degree to which light is blocked by that material. A higher opacity value indicates that the material blocks more light. Opacity can be measured using a spectrophotometer with 0° illumination / 45° detection, peripheral optical geometry, and a computer interface, such as HunterLab LabScan XE running Universal Software (available from Hunter Associates Laboratory Inc., Reston, Virginia). Instrument calibration and measurements are performed using standard black and white calibration plates provided by the supplier. All testing is performed in a room maintained at approximately 23±2°C and approximately 50±5% relative humidity.

[0086] The spectrophotometer is configured for the XYZ color scale, D65 illuminant, and 10° standard observer, with the UV filter set to nominal. The instrument is standardized using a 44.45 mm (1.750 in) viewing area according to the supplier's procedures. After calibration, the software is set to the Y opacity procedure, which instructs the operator to cover the sample with either a white or black calibration tile during measurements.

[0087] To obtain the specimen, the front or rear elastic belt is removed from the rest of the article by applying a cold spray, such as Cold spray 829 from La Pointique Int'l Ltd., and then manually removing the central chassis, adhesively connecting the belt to the central chassis. The side seams of the belt, now removed from the central chassis, are opened with scissors. For analysis, the inelastic areas of the belt are cut into 101.6 mm x 101.6 mm pieces using scissors. Before testing, the specimen is preconditioned for 2 hours at 23°C ± 2°C and 50% ± 5% relative humidity.

[0088] The sample is placed on the measurement port. The sample should completely cover the port with the side of the sample corresponding to the garment-facing side of the article facing the port. The test specimen is covered with the white standard plate. After taking the reading, without moving the test specimen, the white tile is removed and replaced with the black standard tile. A second reading is taken and the opacity is calculated as follows: Opacity = (Y value (黒色裏材) / Y value (白色裏材) ) x 100

[0089] Analyze similar areas of a total of three belts and record their opacity results. Calculate the average opacity and report it to the nearest 0.1%.

[0090] 3. Longitudinal Orientation by Observation This measurement method provides a visible random repeating pattern, defined as a pattern visually recognizable to the naked eye when observed from a distance of 10 cm. Referring to Figures 11A-11D, a basic unit is identified, which is the smallest complete unit of the pattern that is repeated to create the pattern and is capable of encompassing a specific area. Within the basic unit, the closest adjacent deformations or prints in the longitudinal and transverse directions are identified. The distance between the closest adjacent deformations / prints in the longitudinal direction (Y) and the closest adjacent deformations / prints in the transverse direction (X) is measured using a scale (units: 0.1 mm). The Y distance and / or X distance may be negative, as in the case of the Y distance in Figure 11C.

[0091] Those patterns with an X spacing at least 10% greater than the Y spacing are considered to have longitudinal orientation. Five sections of the same pattern are analyzed and their average is calculated and reported in %.

[0092] 4.HOP unit area This measurement method is provided for high-order pattern HOPs. HOPs are visually recognizable to the naked eye when observed from a distance of 10 cm and are geometric patterns with inconsistent spacing between deformations. The inconsistent spacing may be alternating or variable. Repeating HOPs created with multiple deformations are identified through observation. Referring to Figures 9A-9D, the HOP in Figure 9A is a circle, Figure 9B is a square, Figure 9C is a leaf and stem, and Figure 9D is a heart surrounded by a chain. The center of one HOP is identified as C. Such a HOP is the base pattern. Other HOPs closest to the base pattern or other HOPs that share elements with the base pattern are identified and extracted. From these nearby HOPs, the four closest center points are identified. An imaginary line connecting the four center points represents a rectangle. If it is possible to draw more than one type of rectangle using the four center points, the rectangle with the smallest area is identified and defined as the HOP unit. Measure the sides and / or diagonals of the rectangle using a JIS certified metal scale or equivalent and calculate the area of ​​the rectangle.

[0093] Five HOP units with the same pattern were analyzed, and 1 mm 2 Report in units.

[0094] 5. Image Analysis 5-1. Sample preparation A sample of the article (20) is mounted on a rigid plastic plate of appropriate size to allow the sample's elastic belt (40) to be stretched to 65% to 90% of its fully extended circumference W1. For the measurements of the article samples in Examples 1 and 2, a rigid plastic plate measuring 250 mm in the transverse direction and 4 mm thick was used. Additionally, a tension block is inserted into the sample between the front side and the plastic plate. Regardless of the sample size, the tension block measures 110 mm in the transverse direction, 170 mm in the longitudinal direction, and 25 mm thick. The tension block is inserted into the center of the article so that any elastic in the central chassis (38) is substantially in tension.

[0095] 5-2. Image acquisition The prepared sample was placed horizontally on a non-reflective black background plate, front side up. A Canon camera (Canon EO2 6D Mark 2) or equivalent with a lens (EF24-105mm f / 4L IS2 USM) was placed directly above the sample, 1050 mm long. Two bar lights (Smart Vision Lights LHF 300 or equivalent) were placed 650 mm transversely and 300 mm vertically from the sample, with the light faces facing at an angle of 45±6 degrees from the horizontal and the longer dimension of the bar lights parallel to the longitudinal axis of the sample. The focal length of the camera was set to 64 mm. Image acquisition settings were ISO: 400, F: 5.0, and exposure time: 1 / 160 sec.

[0096] 5-3. Image analysis of pattern density a) The images obtained above are imported into ImageJ software (version 1.52h, National Institutes of Health, USA) or equivalent and converted to 8-bit. b) Setting the scale in relation to a hard plastic plate. c) Analysis areas of the first belt pattern (FBP) and the first crotch pattern (FCP) were simultaneously cut out and aligned in 50 mm x 50 mm squares approximately from the transverse center of the article, while avoiding wrinkles, shadows, or areas with high reflectivity. The images obtained by this process were as shown in Figure 12A for the FBP of Example 1, Figure 13A for the FCP of Example 1, Figure 14A for the FBP of Example 2, and Figure 15A for the FCP of Example 2. This order of the images (12, 13, 14, 15) of each pattern is the same as the remaining images described below. d) The cropped image is filtered to remove large structures up to 10 pixels and small structures up to 3 pixels using the "FFT bandpass filter" in ImageJ with the "function of autoscale after filtering" and "saturation when autoscaling" marks selected. e) The filtered image obtained in step d) is converted to black and white using a threshold at 70 grey values. f) Using the built-in ImageJ plugin called "particle analysis" 2 To filter particles with a size less than 1 / 2, apply a threshold value to the image obtained in step e) and set the "Show" pull-down menu to "Masks" to create a clear pattern image and select the mark in the summary table. The clear pattern images obtained by this step in Examples 1 and 2 are shown in Figures 12B to 15B. The pattern density is defined as the area % from the summary table. Five samples were analyzed, and their average was calculated and reported to the nearest 0.1 point.

[0097] 5-4. Image analysis of longitudinal dispersion / transverse dispersion g) The clear pattern image obtained in step f) is T-filtered using the "Gaussian Blur" filter in ImageJ with a sigma (radius) of 1 mm. The images obtained by this step in Examples 1 and 2 were Figures 12C to 15C. h) To calculate the orientation variance, apply the built-in ImageJ plugin called "Directionality" to the blur-filtered image obtained in step g) to calculate the orientation variance. The analysis parameters used are as follows: Method: Fourier Components, Nbins: 5, Histogram Start: -45, Histogram End: 135, as marked in the display table. i) Obtain the directional dispersion from the output table. The output table contains the dispersion for each angle -45°, 0°, 45°, 90°, and 135°. The transverse dispersion is defined as the % dispersion at 0°. The longitudinal dispersion is defined as the % dispersion at 90°. Five samples are analyzed and their average is calculated and reported to the nearest 0.01 point. [Example]

[0098] Examples 1 and 2 were fabricated by having the belt configuration of Figure 2A, the first belt pattern FBP and the first crotch pattern FCP as shown in Figures 6A and 6B, and the elasticity / bonding profile design of Table 1, respectively. Actual photographic images of the FBP of Example 1, the FCP of Example 1, the FBP of Example 2, and the FCP of Example 2 are provided as Figures 12A, 13A, 14A, and 15A, respectively. The longitudinal / transverse dispersion and pattern density of Examples 1 and 2 were obtained as shown in Table 2.

[0099] [Table 2] ( * 1) "Belly cut" in Table 1 refers to the removal of elastic in the transverse central region of the elastic strand, resulting in an effective elastic length of 68%.

[0100] [Table 3]

[0101] The articles of Examples 1 and 2 provide an aesthetically pleasing, uniform appearance. The articles of Examples 1 and 2 also have improved stretch for ease of application, improved fit to prevent loosening, improved comfort and softness, and improved breathability for skin health.

[0102] Synthetic vision-based display testing Examples A to H were created as composite photographs of pants-type articles having the appearance of the articles as seen from the front, as shown in Figures 16A to 16H, respectively. All deformations were approximately circular holes with an aspect ratio of 2 or less. The composite photographs were created to show how the articles would look when worn and had the following characteristics: Examples C and D were created as pants-type articles having a 79 mm 2 and 20mm 2 The pattern is a high-order pattern with a HOP unit area of ​​.

[0103] [Table 4]

[0104] Twenty panelists were recruited who were caregivers of infants who generally used size 4 or 5 (large or extra-large) pant diapers and had experience using a mix of major brands. Panelists were shown all appearances of Examples A-H and asked to rate them using a five-point scale, with scores such as "poor" = 0, "satisfactory" = 25, "good" = 50, "very good" = 75, and "excellent" = 100, as seen in Table 4 below. Scores were averaged.

[0105] [Table 5] ( * 1) The marking of the example number after the score indicates that the example is "statistically significantly better" than the marked example at the 90% confidence level. For example, the "Overall" rating of Example B was statistically significantly better than each of Examples G and H.

[0106] According to the above test, Examples B, C, and D, which meet the requirements of the present invention, have a statistically significant overall preference over at least some of Examples E through H, which do not meet the requirements of the present invention.

[0107] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm." Furthermore, every numerical range given throughout this specification includes every narrower numerical range that falls within that broader numerical range.

[0108] All documents cited herein, including cross-referenced documents or related patents or applications, are incorporated herein by reference in their entirety unless expressly excluded or otherwise limited. The citation of any document shall not be deemed to be prior art to any invention disclosed or claimed herein, or that it alone, or in combination with any other reference(s), teaches, suggests, or discloses any such invention. Furthermore, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.

[0109] While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

1. A longitudinally and transversely continuous wearable article comprising a front elastic belt, a back elastic belt, a crotch region, a waist opening, and a pair of leg openings, the crotch region extending longitudinally between the front elastic belt and the back elastic belt; each of the front elastic belt and the back elastic belt is a laminate including an inner sheet, an outer sheet, and an elastic member extending in the transverse direction, the front elastic belt and the back elastic belt being discontinuous with each other in the crotch region; the front elastic belt and the back elastic belt have a transverse dimension of LW, and a smaller longitudinal dimension of the front elastic belt or the back elastic belt has a dimension of LS, and about 10% to about 40% of LW and about 15% to about 75% of LS, preferably about 30% to about 70% of LS, have their elastic activity removed, and the areas of the front elastic belt and the back elastic belt where elastic activity has been removed define inelastic areas, and the front and back inelastic areas have a first belt pattern FBP, and the crotch area has a first crotch pattern FCP, A wearable article, wherein the first belt pattern FBP and the first crotch pattern FCP are both geometric patterns, and the first belt pattern FBP and the first crotch pattern FCP both have a longitudinal orientation according to the measurement method herein.

2. The article of claim 1 , wherein said first belt pattern FBP and said first crotch pattern FCP have common elements.

3. The article of claim 1 , wherein the first belt pattern FBP and the first crotch pattern FCP are different.

4. 4. The article of claim 1, wherein the first belt pattern FBP is aligned with a plurality of lines extending in the longitudinal direction, the lines being spaced apart from one another at a transverse pitch DF1 of from about 2 mm to about 15 mm.

5. The article of any one of claims 1 to 4, wherein the first crotch pattern FCP is aligned with the plurality of longitudinally extending wavy lines.

6. A longitudinally and transversely continuous wearable article comprising a front elastic belt, a back elastic belt, a crotch region, a waist opening, and a pair of leg openings, the crotch region extending longitudinally between the front elastic belt and the back elastic belt; each of the front elastic belt and the back elastic belt is a laminate including an inner sheet, an outer sheet, and an elastic member extending in the transverse direction, the front elastic belt and the back elastic belt being discontinuous with each other in the crotch region; the front elastic belt and the back elastic belt have a transverse dimension of LW, and a smaller longitudinal dimension of the front elastic belt or the back elastic belt has a dimension of LS, and about 10% to about 40% of LW and about 15% to about 75% of LS, preferably about 30% to about 70% of LS, have their elastic activity removed, and the areas of the front elastic belt and the back elastic belt where elastic activity has been removed define inelastic areas, and the front and back inelastic areas have a first belt pattern FBP, and the crotch area has a first crotch pattern FCP, Both the first belt pattern FBP and the first crotch pattern FCP are approximately 16 mm 2 ~Approx. 200mm 2 wherein the first belt pattern FBP and the first crotch pattern FCP are geometric patterns having common elements, and both the first belt pattern FBP and the first crotch pattern FCP have a non-directional orientation according to the measurements herein.

7. The article of any one of claims 1 to 6, wherein the inelastic region further comprises a second belt pattern SBP that is a geometric pattern.

8. The article of any one of claims 1 to 7, wherein the crotch region further comprises a second crotch pattern SCP that is a geometric pattern.

9. 9. The article of any one of claims 1 to 8, wherein the inelastic region further comprises a second belt pattern SBP that is an aesthetic pattern, the crotch region further comprises a second crotch pattern SCP that is an aesthetic pattern, and the second belt pattern SBP and the second crotch pattern SCP have common elements.

10. 10. The article of any one of claims 1-9, wherein said first belt pattern FBP has a pattern density and said first crotch pattern FCP has a pattern density, and wherein the difference between said pattern density of said first belt pattern FBP and said pattern density of said first crotch pattern FCP is less than about 10 points according to the measurements herein.

11. The article of any one of claims 1 to 10, wherein said first belt pattern FBP and said first crotch pattern FCP are formed by holes having a minor radius of at least about 0.1 mm.

12. 12. The article of claim 11, wherein at least one of the front elastic belt and the back elastic belt has an opacity of at least about 25%.

13. The article according to any one of claims 1 to 10, wherein the first belt pattern FBP and the first crotch pattern FCP are embossed.

14. The article according to any one of claims 1 to 13, wherein the entire garment-facing surfaces of the front elastic belt and the back elastic belt have the first belt pattern FBP.

15. The article according to any one of claims 1 to 14, wherein the first crotch pattern FCP is provided on an outer cover layer, and the outer cover layer extends in the longitudinal direction and overlaps each of the front elastic belt and the back elastic belt by less than about 20 mm.

Citation Information

Patent Citations

  • Disposable pull-on garment

    WO2006017718A1