Pants-type absorptive article

Abstract

The utility model discloses a shorts type absorptive article, which effectively solves the problem that the size of the belly side part and the back side part of the shorts type absorptive article with the existing structure is too large, and the crotch part is easy to loosen when the shorts type absorptive article is worn, so that under the condition of ensuring the wearing comfort, the crotch part is lifted, the close-fitting property of the shorts type absorptive article is improved, and the shorts type absorptive article is comfortable to wear. Meanwhile, the risk that after the absorption inner body absorbs the excrement, the absorption inner body is not well attached when being worn, and consequently the excrement is likely to leak can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable sanitary products, in particular to the fields of baby pull-up pants, adult pull-up pants, sanitary pants, etc., and specifically to a shorts-type absorbent article. Background Art

[0002] Among disposable sanitary products, especially pants-type absorbent articles (commonly known as pull-up pants), it includes an outer covering layer and an absorbent inner body arranged inside the outer covering layer. From the perspective of wearing, the outer covering layer has a front waistline portion arranged at the front waist of the wearer, a rear waistline portion at the rear waist of the wearer, a ventral portion of the wearer's abdomen, a dorsal portion of the wearer's back, and a crotch portion arranged at the ventral portion and the dorsal portion. The outer covering layer has an outer sheet and an inner sheet and an elastic component arranged between the outer sheet and the inner sheet to form an elastic composite sheet. The side sealing portions are formed by sealing the two sides of the outer covering layer, so that the pants-type absorbent article is formed into a pants-type shape with a waist opening and two leg openings.

[0003] Nowadays, the front waistline / rear waistline and the ventral / dorsal parts of the outer covering layer are made of two different materials. Since the elastic composite sheet formed by the outer covering layer is elastic, the front / rear waistline and the ventral / dorsal parts have different elasticity ratios. Normally, the stretch ratio of the front / rear waistline is greater than that of the ventral / dorsal parts. This is because the front / rear waistline is set tighter to prevent it from falling when worn, while the ventral / dorsal parts are looser than the front / rear waistline to make it comfortable to wear without being restrained. However, under the premise of ensuring comfort, there is another problem with the ventral / dorsal parts: the size of the ventral / dorsal parts is too large, and the crotch is prone to looseness when worn, resulting in poor fit. In particular, after the absorbent inner body absorbs excrement, this poor fit will be further aggravated, resulting in possible leakage of excrement.

[0004] Therefore, it is necessary to propose solutions to the problems of the prior art. Utility Model Content

[0005] The utility model provides a shorts-type absorbent article, which effectively solves the problem that the ventral and dorsal parts of the existing pants-type absorbent articles are too large in size and the crotch is prone to looseness when worn. Therefore, while ensuring wearing comfort, the crotch is pulled up to improve its fit, and at the same time, the risk of possible leakage of excrement due to poor fit of the absorbent inner body after absorbing excrement can be avoided when worn.

[0006] The utility model provides a shorts-type absorbent article, which has a length direction, a width direction and a thickness direction which are orthogonal to each other, and is respectively arranged along the length direction at a front waistline portion of the wearer's front waist, a rear waistline portion of the wearer's rear waist, a ventral portion of the wearer's abdomen, a dorsal portion of the wearer's back and a crotch portion located between the ventral portion and the dorsal portion, the shorts-type absorbent article comprising an outer covering layer and an absorbent inner body arranged inside the outer covering layer along the length direction; the outer covering layer comprises a waist non-woven fabric and a waist elastic component which are respectively arranged at the front waistline portion and the rear waistline portion and extend along the width direction, an elastic composite sheet material which is respectively arranged at the ventral portion and the dorsal portion and extends along the width direction, an inner non-woven fabric which is correspondingly arranged at the crotch portion, and a first leg elastic component which is at least located between the elastic composite sheet and the inner non-woven fabric at the dorsal portion. The waist elastic component is wrapped inside the waist non-woven fabric; along the length direction, the waist non-woven fabric located at the front waistline portion and the rear waistline portion are respectively spliced ​​with the elastic composite sheet located at the ventral portion and the dorsal portion to form a waistline portion, and the waistline portion has a waist splicing composite area, and the waist splicing composite area is located at the junction of the waist non-woven fabric and the elastic composite sheet; the inner layer non-woven fabric is respectively spliced ​​with the elastic composite sheet located at the ventral portion and the dorsal portion to form a leg portion, and the leg portion has a leg splicing composite area, and the leg splicing composite area is located at the junction of the elastic composite sheet and the inner layer non-woven fabric; wherein, there are multiple first leg elastic components, and they are spaced apart along the length direction, and each of the first leg elastic components extends along the width direction and is matched with the leg opening of the shorts-type absorbent article.

[0007] In some embodiments of the present invention, each of the first leg elastic components is a connection of multiple curves or a connection of a curve and a straight line along the width direction.

[0008] In some embodiments of the present invention, the first leg elastic component located in the overlapping area of ​​the outer cover layer and the absorbent inner body is configured to be in a non-elastic stress state.

[0009] In some embodiments of the present invention, the shorts-type absorbent article also includes a crotch non-woven fabric, which is located in the crotch and arranged on the side of the inner non-woven fabric away from the absorbent inner body, and is used to fix the first leg elastic component together with the inner non-woven fabric.

[0010] In some embodiments of the present invention, the inner layer nonwoven fabric and the crotch nonwoven fabric have the same dimensions in the length direction and width direction, and the dimensions of the inner layer nonwoven fabric and the crotch nonwoven fabric in the length direction are smaller than the dimensions of the absorbent inner body.

[0011] In some embodiments of the present invention, the absorbent inner body comprises a liquid-permeable surface layer, an absorbent core layer and a leak-proof bottom layer which are sequentially arranged along a direction from the skin side of the absorbent inner body to the non-skin side of the absorbent inner body.

[0012] In some embodiments of the present invention, a crotch elastic component is arranged between the absorbent core layer and the anti-leakage bottom layer and along the length direction.

[0013] In some embodiments of the present invention, the relationship between the dimension of the crotch elastic component along the length direction and the dimension of the absorbent inner body along the length direction is: L2*50%≤L1≤L2*90%, wherein L1 represents the dimension of the crotch elastic component along the length direction, and L2 represents the dimension of the absorbent inner body along the length direction.

[0014] In some embodiments of the present invention, the absorbent inner body further comprises a three-dimensional leak-proof portion extending in the length direction and arranged on both sides in the width direction, and a leak-proof elastic component extending in the length direction is arranged inside the three-dimensional leak-proof portion.

[0015] In some embodiments of the present invention, embossed bonding portions are provided at the two ends of the absorbent inner body along the length direction and in the area joined to the outer covering layer, and the embossed bonding portions are staggered along the length direction with the crotch elastic components of the shorts-type absorbent article and the leakage-proof elastic components of the absorbent inner body.

[0016] In some embodiments of the present invention, the outer covering layer also includes a plurality of second leg elastic components located between the elastic composite sheet and the inner non-woven fabric in the ventral portion and extending in the width direction, and the plurality of second leg elastic components are distributed at intervals along the length direction, wherein the second leg elastic components located in the overlapping area between the outer covering layer and the absorbent inner body are configured to be in a state of no elastic stress.

[0017] In some embodiments of the present invention, the second leg elastic component is a straight line, a connection of multiple curves, or a connection of a curve and a straight line along the width direction.

[0018] In some embodiments of the utility model, in the waist splicing and composite area, the waist non-woven fabric and the elastic composite sheet are composited in the waist splicing and composite area by using at least one of hot melt adhesive, ultrasound, and heat pressing; in the leg splicing and composite area, the elastic composite sheet and the inner layer non-woven fabric are composited in the leg splicing and composite area by using at least one of hot melt adhesive, ultrasound, and heat pressing.

[0019] In some embodiments of the present invention, a first fixing adhesive is provided on the inner surface of the waist non-woven fabric bent toward the skin side of the absorbent inner body, and the first fixing adhesive is used to fix the bent waist non-woven fabric.

[0020] In some embodiments of the present invention, a second fixing adhesive is provided on the non-skin side of the absorbent inner body, and the second fixing adhesive is used to bond the elastic composite sheet and the inner layer nonwoven fabric to the absorbent inner body.

[0021] The utility model provides a shorts-type absorbent article, which comprises, through an outer covering layer, a waist non-woven fabric and a waist elastic component which are respectively arranged at a front waistline portion and a rear waistline portion and extend in a width direction, elastic composite sheets which are respectively arranged at a ventral portion and a dorsal portion and extend in a width direction, an inner non-woven fabric which is correspondingly arranged at a crotch portion, and a first leg elastic component which is at least located between the elastic composite sheet at the dorsal portion and the inner non-woven fabric; the waist elastic component is coated inside the waist non-woven fabric; the waist non-woven fabrics located at the front waistline portion and the rear waistline portion are respectively spliced ​​with the elastic composite sheets located at the ventral portion and the dorsal portion to form a waistline portion, the waistline portion having a waist splicing composite area, and the waist splicing composite area is located at the junction of the waist non-woven fabric and the elastic composite sheet; the inner non-woven fabrics are respectively The leg circumference portion is spliced ​​with the elastic composite sheet located on the ventral part and the dorsal part to form a leg circumference portion, and the leg circumference portion has a leg splicing composite area, and the leg splicing composite area is located at the junction of the elastic composite sheet and the inner layer of non-woven fabric; wherein, there are multiple first leg elastic components, and they are distributed at intervals along the length direction, and each of the first leg elastic components extends along the width direction and is matched with the leg opening of the shorts-type absorbent article. This can effectively solve the problem that the ventral part and the dorsal part of the existing structure of pants-type absorbent articles are too large in size, and the crotch is prone to looseness when worn. Therefore, while ensuring the wearing comfort, the crotch is lifted to improve its fit, and at the same time, it can also avoid the risk of possible leakage of excrement due to poor fit of the absorbent inner body after absorbing excrement when worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 The utility model is a three-dimensional diagram of a pants-type absorbent article.

[0024] Figure 2 It is a schematic diagram of the expansion of the pants-type absorbent article shown in the first embodiment of the utility model along the length direction.

[0025] Figure 3 for Figure 2 The structural schematic diagram along SS is shown.

[0026] Figure 4 It is a schematic diagram of the expansion of the pants-type absorbent article shown in the second embodiment of the present invention along the length direction.

[0027] Figure 5 for Figure 4 The structural schematic diagram along SS is shown.

[0028] Figure 6 This is a schematic diagram of the expansion of the pants-type absorbent article shown in the third embodiment of the present invention along the length direction.

[0029] Figure 7 for Figure 6 The structural schematic diagram along SS is shown. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "up", "down", "left", and "right", generally refer to the up, down, left, and right of the device in actual use or working state, specifically the drawing direction in the accompanying drawings.

[0031] The utility model provides a shorts-type absorbent article, which has a length direction, a width direction and a thickness direction which are orthogonal to each other, and is respectively arranged along the length direction at a front waistline portion of the wearer's front waist, a rear waistline portion of the wearer's rear waist, a ventral portion of the wearer's abdomen, a dorsal portion of the wearer's back and a crotch portion located between the ventral portion and the dorsal portion, the shorts-type absorbent article comprising an outer covering layer and an absorbent inner body arranged inside the outer covering layer along the length direction; the outer covering layer comprises a waist non-woven fabric and a waist elastic component which are respectively arranged at the front waistline portion and the rear waistline portion and extend along the width direction, an elastic composite sheet material which is respectively arranged at the ventral portion and the dorsal portion and extends along the width direction, an inner non-woven fabric which is correspondingly arranged at the crotch portion, and a first leg elastic component which is at least located between the elastic composite sheet and the inner non-woven fabric at the dorsal portion. The waist elastic component is wrapped inside the waist non-woven fabric; along the length direction, the waist non-woven fabric located at the front waistline portion and the rear waistline portion are respectively spliced ​​with the elastic composite sheet located at the ventral portion and the dorsal portion to form a waistline portion, and the waistline portion has a waist splicing composite area, and the waist splicing composite area is located at the junction of the waist non-woven fabric and the elastic composite sheet; the inner layer non-woven fabric is respectively spliced ​​with the elastic composite sheet located at the ventral portion and the dorsal portion to form a leg portion, and the leg portion has a leg splicing composite area, and the leg splicing composite area is located at the junction of the elastic composite sheet and the inner layer non-woven fabric; wherein, there are multiple first leg elastic components, and they are spaced apart along the length direction, and each of the first leg elastic components extends along the width direction and is matched with the leg opening of the shorts-type absorbent article.

[0032] Among them, Figure 1The shorts-type absorbent article shown has a length direction, a width direction and a thickness direction that are perpendicular to each other (wherein the length direction refers to the direction of the shorts-type absorbent article in the unfolded state; in the thickness direction, the side in contact with the human body is the skin side, and the side away from the human skin is the non-skin side, see the arrows in each direction shown in the accompanying drawings for details), and has a front waistline portion S1 arranged along the length direction at the front waist of the wearer, a rear waistline portion S2 at the rear waist of the wearer, a ventral portion S3 of the wearer's abdomen, a dorsal portion S4 of the wearer's back, and a crotch portion S5 located between the ventral portion S3 and the dorsal portion S4. Structurally, the shorts-type absorbent article includes an outer covering layer 1 and an absorbent inner body 2 disposed inside the outer covering layer 1. The absorbent inner body 2 is the main structure for absorbing excrement. The main structure of the absorbent inner body 2 usually has two structures: an ultra-thin composite core and a cotton core. The cotton core structure includes a mixture of crushed fluff pulp fibers and polymers (the polymer is a kind of granular material, its full name is super absorbent resin, also referred to as SAP (Super Absorbent Polymer)). The two sides of the outer covering layer 1 are sealed to form a side sealing portion A, so that the shorts-type absorbent article forms a trouser-like shape with a waist opening and two leg openings.

[0033] Furthermore, in some embodiments of the utility model, each of the first leg elastic components is a connection of multiple curves or a connection of a curve and a straight line along the width direction. This arrangement can effectively improve the problem of loose crotch and poor fit (easy to sag) caused by the large size of the ventral side / dorsal side for different pants types of different shorts-type absorbent articles, making the wearer more close-fitting and more comfortable.

[0034] In some embodiments of the present invention, the first leg elastic component located in the overlapping area of ​​the outer covering layer and the absorbent inner body is configured to be in a state of no elastic stress. This arrangement can prevent wrinkles in the width direction of the absorbent inner body and ensure its flatness.

[0035] In some embodiments of the utility model, the pants-type absorbent article further comprises a crotch nonwoven fabric, which is located in the crotch and arranged on a side of the inner nonwoven fabric away from the absorbent inner body, and is used to fix the first leg elastic component together with the inner nonwoven fabric. This arrangement can enhance the fixing effect of the first leg elastic component.

[0036] In some embodiments of the utility model, the inner nonwoven fabric and the crotch nonwoven fabric have the same size in the length direction and the width direction, and the size of the inner nonwoven fabric and the crotch nonwoven fabric in the length direction is smaller than the size of the absorbent inner body. Since the inner nonwoven fabric and the crotch nonwoven fabric are made by a short-cut process, in the present application, by setting the size of the inner nonwoven fabric and the crotch nonwoven fabric in the length direction and the width direction to be the same, in this way, only one cutting unit is needed to achieve the cutting of the two material sizes during the processing (if the size of the inner nonwoven fabric and the crotch nonwoven fabric is different, two cutting units are required for cutting), thereby reducing the manufacturing cost. In addition, since the absorbent inner body is arranged inside the outer covering layer, and the leg circumference of the outer covering layer is formed by splicing the inner non-woven fabric with the elastic composite sheets located on the ventral side and the dorsal side respectively, the inner non-woven fabric and the crotch non-woven fabric do not need to be set very long in the length direction (because the inner non-woven fabric and the crotch non-woven fabric have elastic composite sheets spliced ​​at both ends), thereby reducing the material cost of the inner non-woven fabric and the crotch non-woven fabric.

[0037] In some embodiments of the present invention, the absorbent inner body comprises a liquid-permeable surface layer, an absorbent core layer and a leak-proof bottom layer which are sequentially arranged along a direction from the skin side of the absorbent inner body to the non-skin side of the absorbent inner body.

[0038] In some embodiments of the present invention, a crotch elastic component is arranged between the absorbent core layer and the anti-leakage bottom layer and along the length direction.

[0039] In some embodiments of the present invention, the relationship between the dimension of the crotch elastic component along the length direction and the dimension of the absorbent inner body along the length direction is: L2*50%≤L1≤L2*90%, wherein L1 represents the dimension of the crotch elastic component along the length direction, and L2 represents the dimension of the absorbent inner body along the length direction.

[0040] In some embodiments of the utility model, the absorbent inner body further comprises a three-dimensional leak-proof part extending in the length direction and arranged on both sides in the width direction, and a leak-proof elastic component extending in the length direction is arranged inside the three-dimensional leak-proof part. As the leak-proof elastic component elastically contracts, the three-dimensional leak-proof part stands up in the middle position in the length direction, thereby preventing excrement from leaking sideways at both sides of the absorbent inner body in the width direction.

[0041] In some embodiments of the utility model, embossed adhesive parts are provided at the two ends of the absorbent inner body along the length direction and in the region where the absorbent inner body is joined to the outer covering layer, and the embossed adhesive parts are staggered with the crotch elastic parts of the shorts-type absorbent article and the leakage-proof elastic parts of the absorbent inner body along the length direction. By providing the embossed adhesive parts, the two ends of the absorbent inner body can be sealed to prevent the leakage of the polymer particles in the absorbent inner body, and the absorbent inner body can also be joined and fixed to the outer covering layer.

[0042] In some embodiments of the utility model, the outer covering layer further includes a plurality of second leg elastic components located between the elastic composite sheet and the inner nonwoven fabric of the ventral part and extending in the width direction, and the plurality of second leg elastic components are distributed at intervals along the length direction, wherein the second leg elastic components located in the overlapping area of ​​the outer covering layer and the absorbent inner body are configured to be in a state of no elastic stress. This arrangement can also prevent wrinkles in the absorbent inner body along the width direction and ensure its flatness.

[0043] In some embodiments of the utility model, the second leg elastic component is a straight line, a connection of multiple curves, or a connection of a curve and a straight line along the width direction. In this way, the second leg elastic component can cooperate with the first leg elastic component to improve the problem of crotch sagging caused by the large size of the ventral side / dorsal side of different pants types of different shorts-type absorbent articles, making the wearer more close-fitting and more comfortable.

[0044] In some embodiments of the utility model, in the waist splicing and composite area, the waist non-woven fabric and the elastic composite sheet are composited in the waist splicing and composite area by using at least one of hot melt adhesive, ultrasound, and heat pressing; in the leg splicing and composite area, the elastic composite sheet and the inner layer non-woven fabric are composited in the leg splicing and composite area by using at least one of hot melt adhesive, ultrasound, and heat pressing.

[0045] In some embodiments of the present invention, a first fixing adhesive is provided on the inner surface of the waist non-woven fabric bent toward the skin side of the absorbent inner body, and the first fixing adhesive is used to fix the bent waist non-woven fabric.

[0046] In some embodiments of the present invention, a second fixing adhesive is provided on the non-skin side of the absorbent inner body, and the second fixing adhesive is used to bond the elastic composite sheet and the inner layer nonwoven fabric to the absorbent inner body.

[0047] The above-mentioned structural design can effectively solve the problem that the ventral and dorsal parts of the existing pants-type absorbent articles are too large and the crotch is prone to looseness when worn. Therefore, while ensuring wearing comfort, the crotch can be pulled up to improve its fit. At the same time, it can also avoid the risk of possible leakage of excrement due to poor fit of the absorbent inner body after absorbing excrement when worn.

[0048] The following is a detailed description of the shorts-type absorbent article provided in the embodiments of the present invention. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments of the present invention. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a particular embodiment, please refer to the relevant description of other embodiments.

[0049] Embodiment 1:

[0050] See also Figures 1 to 3 , the utility model provides a shorts-type absorbent article in the first embodiment. The outer covering layer 1 of the shorts-type absorbent article includes a waist non-woven fabric 11 and a waist elastic component 14 respectively arranged in the front waist circumference portion S1 and the rear waist circumference portion S2 and extending in the width direction, an elastic composite sheet 12 respectively arranged in the ventral portion S3 and the dorsal portion S4 and extending in the width direction, and an inner non-woven fabric 13 correspondingly arranged in the crotch portion S5. Along the length direction, the waist non-woven fabric 11 located in the front waist circumference portion S1 and the rear waist circumference portion S2 are respectively spliced ​​with the elastic composite sheet 12 located in the ventral portion S3 and the dorsal portion S4 to form a waist circumference portion, and the waist circumference portion has a waist splicing composite area B. Specifically, the waist splicing composite area B is located at the junction of the waist non-woven fabric 11 and the elastic composite sheet 12.

[0051] The waist non-woven fabric 11 is arranged in the entire waist circumference. The waist non-woven fabric 11 is bent to cover and fix the waist elastic component 14 inside the waist non-woven fabric 11. In the first embodiment, the waist non-woven fabric 11 is bent toward the skin side of the absorbent inner body 2, so that the waist elastic component 14 is covered inside the waist non-woven fabric 11, and the elastic composite sheet 12 is spliced ​​inside the folding area formed after the waist non-woven fabric 11 is bent. Further, by adopting a hot melt adhesive process, the first fixing adhesive (here, the waist non-woven fabric folding adhesive) H4 is applied to the inner surface of the waist non-woven fabric 11 bent toward the skin side of the absorbent inner body 2 (i.e., the inner surface of the waist non-woven fabric 11 after bending) to fix the bent waist non-woven fabric 11. The waist elastic component 14 can be made of natural rubber strips (silk), artificial synthetic elastic spandex yarn, or other elastic materials. In the first embodiment, the waist elastic component 14 is made of synthetic elastic spandex yarn, the average dtex of which is 40 dtex to 1200 dtex, and the spandex yarn is arranged at equal intervals along the length direction, and the spacing size can be set according to the specific situation. Of course, in other embodiments, the spandex yarn can also be arranged at non-equal intervals along the length direction.

[0052] In some embodiments of the present application, the waist non-woven fabric is a combination of one or more of moisture wicking non-woven fabric, skin refreshing non-woven fabric, printed pattern non-woven fabric, convexoconcave non-woven fabric, and open-pore non-woven fabric. The waist non-woven fabric is mainly arranged in the waist area and is close to the skin of the human waist. For different wearers, especially infants or wearers with sensitive skin, since their skin surface is easily affected by the external environment and skin contact objects, the design and selection of the waist non-woven fabric are also very important. The present application further increases the protection of the skin, especially the protection of the waist skin, by optimizing the design and selection of the waist non-woven fabric. If the perforated nonwoven fabric design is adopted, such nonwoven fabric has several visible air holes, and the air holes can be 2D or 3D effects, which can increase the airflow exchange between the inner end of the shorts-type absorbent article close to the skin and the outer end away from the skin, thereby enhancing the ventilation effect and improving the microclimate environment of the waist; if the convex-concave nonwoven fabric design is adopted, the contact area between the waist nonwoven fabric and the waist part can be reduced, which is conducive to the removal of moisture from the waist, and thus can also improve the microclimate environment of the waist, and the convex-concave nonwoven fabric and the perforated nonwoven fabric can be made of ordinary nonwoven fabric fibers, and will not increase too much cost. In addition, the waist nonwoven fabric can also be a nonwoven fabric made of special functional fibers, for example, it can be a nonwoven fabric with moisture absorption and perspiration function made of moisture absorption and perspiration fibers, or it can be a skin-refreshing nonwoven fabric with a certain amount of skin-refreshing functional component medium or oil added when manufacturing the nonwoven fabric. Such skin-refreshing nonwoven fabric is beneficial to human skin and can avoid the irritation caused by the nonwoven fabric to the waist skin. In addition, the waist non-woven fabric can be a combination of several non-woven fabrics having convex and concave embossing, open-pore effects, moisture absorption and perspiration wicking functions, and toning functions.

[0053] In the designs of some known shorts-type absorbent articles, a separate label-printed nonwoven fabric is used for identification and differentiation (distinction), or an outer nonwoven fabric with a printed pattern in the waist region is used, so that the shorts-type absorbent article has a beautiful visual effect in addition to the identification and differentiation functions. If the above-mentioned separate label-printed nonwoven fabric is used, short-cutting and positioning composite operations are usually required, which increases the manufacturing steps of the shorts-type absorbent article. Similarly, if an outer nonwoven fabric with a printed pattern in the waist region is used, in the manufacturing process of the shorts-type absorbent article, due to the relatively wide width of the outer nonwoven fabric, its tension is easy to change, which can easily lead to inaccurate printing positioning. Therefore, in some embodiments of the present application, the waist nonwoven fabric used is a printed pattern nonwoven fabric, which can avoid the phenomenon of easy tension changes and can be achieved without complicated manufacturing steps.

[0054] In order to achieve different elasticities in different positions of the front waistline S1, the rear waistline S2, the ventral part S3 and the dorsal part S4, the stretching ratio of the waist elastic component 14 located in the waistline can be set to be greater than the stretching ratio of the elastic composite sheet 12 located in the ventral part S3 and the dorsal part S4, so that the tightness of the waistline is set to be larger (tighter) to prevent it from falling when worn, and the tightness of the ventral part S3 and the dorsal part S4 is set to be smaller (looser) to improve comfort.

[0055] The elastic composite sheet 12 may be a composite of a single-layer or double-layer non-woven fabric and elastic threads, or a composite of a single-layer or double-layer non-woven fabric and an elastic film or elastic cloth or elastic perforated film.

[0056] Typically, an elastic thread and a double layer of nonwoven fabric may be used, wherein the elastic thread is compounded between the two layers of nonwoven fabric to form an elastic composite sheet 12. This structure is also a conventional elastic structure of the ventral portion S3 and the dorsal portion S4.

[0057] Of course, the elastic film and the double-layer non-woven fabric can also be composited, wherein the elastic film is composited between the two layers of non-woven fabric to form an elastic composite sheet 12. Since the two layers of non-woven fabric and the elastic film are fixed by heat pressing or ultrasonic method to form multiple joints, heat melting energy is applied to the multiple joint regions by heat pressing or ultrasonic method to melt the elastic film, so that the two layers of non-woven fabric are joined to the elastic film at multiple joints. In the stretched state, the elastic film has air holes around the joints (formed when the non-woven fabrics are joined to the non-woven fabrics). The elastic composite sheet 12 of this structure has an increased contact area with the human body and has air holes, making it comfortable to wear without being stuffy.

[0058] Alternatively, an elastic fabric and a single layer of non-woven fabric may be combined to form an elastic composite sheet 12. The elastic composite sheet 12 of this structure is relatively light (low in weight) and has good flatness, and provides a good wearing experience.

[0059] In order to achieve the good air permeability of the elastic composite sheet 12, an elastic perforated film and a double-layer non-woven fabric can also be used, and the elastic perforated film is compounded between the two layers of non-woven fabric. Specifically, the two layers of non-woven fabric and the elastic film are fixed by heat pressing or ultrasonic method to form multiple joints to form the elastic composite sheet 12. At this time, air holes surrounding each joint have been basically formed on the elastic film, and then the elastic composite sheet 12 is stretched using a gear roller (with a concave and convex surface on the circumference), so that air holes of sufficient area can be formed at the joint and / or its periphery between the two layers of non-woven fabric and the elastic film, thereby obtaining an elastic composite sheet 12 with good air permeability.

[0060] The outer covering layer 1 also includes an inner nonwoven fabric 13. The inner nonwoven fabric 13 is correspondingly arranged in the crotch portion S5 of the shorts-type absorbent article. The size of the inner nonwoven fabric 13 along the length direction is smaller than the size of the absorbent inner body 2. The inner nonwoven fabric 13 is spliced ​​with the elastic composite sheet 12 located in the ventral portion S3 and the dorsal portion S4 to form a leg circumference portion, and the leg circumference portion has a leg splicing composite area C. Specifically, the leg splicing composite area C is located at the junction of the elastic composite sheet 12 and the inner nonwoven fabric 13.

[0061] The waist splicing composite area B located at the waist circumference and the leg splicing composite area C located at the leg circumference are both connected by a combination of at least one of a hot melt adhesive process, a hot press process, and an ultrasonic process. In this embodiment 1, the waist splicing composite area B and the leg splicing composite area C are composited by a hot melt adhesive process. Figure 3 As shown, in the waist splicing composite area B, a fixing glue (here, elastic composite sheet fixing glue) H3 is coated on one surface of the side where the waist non-woven fabric 11 and the elastic composite sheet 12 are composited (i.e., the inner surface of the waist non-woven fabric 11) by using a hot melt adhesive process, which is used to connect the waist non-woven fabric 11 and the elastic composite sheet 12 in the waist splicing composite area B. In the leg splicing composite area C, a fixing glue (here, inner non-woven fabric fixing glue) H2 is coated on one surface of the side where the elastic composite sheet 12 and the inner non-woven fabric 13 are composited (i.e., the inner surface of the elastic composite sheet 12) by using a hot melt adhesive process, which is used to connect the elastic composite sheet 12 and the inner non-woven fabric 13 in the leg splicing composite area C.

[0062] In order to fix the absorbent inner body 2 inside the outer covering layer 1, in the first embodiment, a hot melt adhesive process is used to apply a second fixing adhesive (i.e., inner body fixing adhesive) H1 on the non-skin side of the absorbent inner body 2. Since the elastic composite sheet 12 and the inner sheet 13 in the outer covering layer 1 correspond to the absorbent inner body 2 along the length direction, when the elastic composite sheet 12 and the inner sheet 13 are bonded to the absorbent inner body 2 by the inner body fixing adhesive H1, the outer covering layer 1 can be bonded and fixed to the absorbent inner body 2.

[0063] Continue reading Figure 2 and Figure 3 As shown, a plurality of first leg elastic components 15 matching along the leg openings are arranged between the elastic composite sheet 12 and the inner nonwoven fabric 13 located at the back side portion S4. Figure 2 and Figure 3As shown, a plurality of first leg elastic components 15 extend in the width direction and are evenly spaced in the length direction. In other embodiments, a plurality of first leg elastic components 15 may also be unevenly spaced in the length direction. Further, in the first embodiment, each first leg elastic component 15 is a connection between a curve and a straight line in the width direction. Of course, in other embodiments, each first leg elastic component 15 may be a connection between multiple curves in the width direction.

[0064] By providing the first leg elastic component 15, the back side portion S4 can be pulled up better when worn to improve the fit with the human body. Moreover, such a configuration can improve the problem of crotch sagging caused by the large size of the ventral side portion / back side portion for different pants types of different shorts-type absorbent articles, making the wearer more close-fitting and comfortable.

[0065] The first leg elastic component 15 can be made of natural rubber strips (threads), synthetic elastic spandex threads, or other elastic materials. In the first embodiment, the first leg elastic component 15 is made of synthetic elastic spandex threads, and its average dtex is 40 dtex to 1200 dtex. Further, in order to prevent the absorbent inner body 2 from wrinkling along the width direction and ensure its flatness, the positions where the first leg elastic components 15 intersect with the absorbent inner body 2 can be cut off during the preparation process, so that the first leg elastic components 15 located in the overlapping area of ​​the outer covering layer 1 and the absorbent inner body 2 are in a state of no elastic stress.

[0066] Furthermore, the outer covering layer 1 also includes a plurality of second leg elastic components 16 disposed between the elastic composite sheet 12 located in the ventral portion S3 and the inner nonwoven fabric 13. The plurality of second leg elastic components 16 extend in the width direction and are distributed at equal intervals in the length direction. In other partial examples, the plurality of second leg elastic components 16 may also be distributed at non-equal intervals in the length direction. The second leg elastic component 16 may be a straight line, a connection of multiple curves, or a connection of a curve and a straight line in the width direction. In the first embodiment, the second leg elastic component 16 is a straight line in the width direction.

[0067] By providing the second leg elastic component 16, the ventral part S3 can be pulled up better when worn to improve the fit with the human body. Moreover, this arrangement can improve the problem of crotch sagging caused by the large size of the ventral part / dorsal part for different pants types of different shorts-type absorbent articles, making the wearer more close-fitting and comfortable.

[0068] The second leg elastic component 16 can be made of natural rubber strips (threads), synthetic elastic spandex threads, or other elastic materials. In the first embodiment, the second leg elastic component 16 is made of synthetic elastic spandex threads, and its average dtex is 40 dtex to 1200 dtex. Further, in order to prevent the absorbent inner body 2 from wrinkling along the width direction and ensure its flatness, the positions where the second leg elastic components 16 intersect with the absorbent inner body 2 can be cut off during the preparation process, so that the second leg elastic components 16 located in the overlapping area of ​​the outer covering layer 1 and the absorbent inner body 2 are in a state of no elastic stress.

[0069] Continue reading Figure 2 and Figure 3 As shown, the absorbent inner body 2 includes a liquid-permeable surface layer 21, an absorbent core layer 22 and a leakproof bottom layer 23 arranged in sequence along the direction from the skin side of the absorbent inner body 2 to the non-skin side of the absorbent inner body 2. A crotch elastic component 24 is arranged along the length direction between the absorbent core layer 22 and the leakproof bottom layer 23. The crotch elastic component 24 is located in the middle position in the width direction. The relationship between the dimension L1 of the crotch elastic component 24 along the length direction and the dimension L2 of the absorbent inner body 2 along the length direction is: L2*50%≤L1≤L2*90%. The crotch elastic component 24 can be a synthetic elastic spandex yarn, but is not limited to this. It can also be made of natural rubber strips (filaments) or other elastic materials, wherein the average dtex of the synthetic elastic spandex yarn used is 40dtex to 1200dtex. By arranging the crotch elastic component 24, the crotch S5 can be pulled along the length direction, thereby improving the fit and comfort of the absorbent inner body 2 to the human body.

[0070] Further, the absorbent core inner body 2 may also include a three-dimensional leakproof portion 25 extending in the length direction and arranged on both sides of the absorbent core layer 22 in the width direction. A leakproof elastic component 251 extending in the length direction is arranged inside the three-dimensional leakproof portion 25. The leakproof elastic component 251 may be a synthetic elastic spandex yarn, but is not limited thereto, and may also be made of a natural rubber strip (thread) or other elastic material, wherein the average decitex number of the synthetic elastic spandex yarn used is 40dtex to 1200dtex. As the leakproof elastic component 251 elastically contracts, the three-dimensional leakproof portion 25 stands up in the middle position in the length direction, thereby preventing excrement from leaking sideways at both sides of the absorbent inner body 2 in the width direction.

[0071] Continue reading Figure 3As shown, an embossed bonding portion F is provided in the area where the absorbent inner body 2 is connected to the outer covering layer 1 at both ends along the length direction. The embossed bonding portion F is used to seal the two ends of the absorbent inner body 2 to prevent leakage of polymer particles in the absorbent inner body 2, and also to connect and fix the absorbent inner body 2 to the outer covering layer 1. The embossed bonding portion F can be a pattern composed of multiple patterns and arranged in a certain regular pattern. In the first embodiment, the embossed bonding portion F is composed of circular patterns and arranged in a certain regular pattern. Of course, in other embodiments, the pattern and its arrangement are also set according to different actual needs. The embossed bonding portion F is staggered along the length direction with the crotch elastic component 24 of the shorts-type absorbent article and the leak-proof elastic component 251 of the absorbent inner body 2.

[0072] Embodiment 2:

[0073] See also Figures 4 to 5 , and combined with Figures 1 to 3 As shown, the structure of the shorts-type absorbent article of the second embodiment is different from that of the shorts-type absorbent article of the first embodiment in that the second leg elastic component 16 of the shorts-type absorbent article of the second embodiment is different from the second leg elastic component 16 of the shorts-type absorbent article of the first embodiment. In the second embodiment, the second leg elastic component 16 is a connection between a curve and a straight line along the width direction.

[0074] The second leg elastic component 16 can be made of natural rubber strips (threads), synthetic elastic spandex threads, or other elastic materials. In the second embodiment, the second leg elastic component 16 is made of synthetic elastic spandex threads, and its average dtex is 40 dtex to 1200 dtex. Further, in order to prevent the absorbent inner body 2 from wrinkling along the width direction and ensure its flatness, the positions where the second leg elastic components 16 intersect with the absorbent inner body 2 can be cut off during the preparation process, so that the second leg elastic components 16 located in the overlapping area of ​​the outer covering layer 1 and the absorbent inner body 2 are in a state of no elastic stress.

[0075] The other structures of the shorts-type absorbent article in the second embodiment are substantially the same as those in the first embodiment, and will not be described in detail herein.

[0076] Embodiment three:

[0077] See also Figure 6 to Figure 7 , and combined with Figures 1 to 3 As shown, the differences between the structure of the shorts-type absorbent article of the third embodiment and the structure of the shorts-type absorbent article of the first embodiment include: the second leg elastic component 16 and the first leg elastic component 15 of the shorts-type absorbent article of the third embodiment are different from the second leg elastic component 16 and the first leg elastic component 15 of the shorts-type absorbent article of the first embodiment.

[0078] In the third embodiment, the second leg elastic component 16 is a connection between curves of different curvatures along the width direction (the connection between curves), and the curvature of the curve is larger (compared to the curvature of the curve of the second leg elastic component 16 in the second embodiment), that is, the curve span along the length direction is relatively large. The second leg elastic component 16 can be made of natural rubber strips (silk), synthetic elastic spandex yarn, or other elastic materials. In the third embodiment, the second leg elastic component 16 adopts synthetic elastic spandex yarn, and its average decitex number is 40dtex to 1200dtex. Further, in order to prevent the wrinkles of the absorbent inner body 2 along the width direction and ensure its flatness, the position where the multiple second leg elastic components 16 intersect with the absorbent inner body 2 can be cut off during the preparation process, so that the second leg elastic component 16 located in the overlapping area of ​​the outer covering layer 1 and the absorbent inner body 2 is in a state of inelastic stress.

[0079] Similarly, in the third embodiment, the first leg elastic component 15 is a connection between curves of different curvatures along the width direction (the connection between curves), and the curvature of the curve is larger (compared to the curvature of the curve of the first leg elastic component 15 in the second embodiment), that is, the curve span along the length direction is relatively large. The first leg elastic component 15 can be made of natural rubber strips (silk), synthetic elastic spandex yarn, or other elastic materials. In the third embodiment, the first leg elastic component 15 adopts synthetic elastic spandex yarn, and its average decitex number is 40dtex to 1200dtex. Further, in order to prevent the wrinkles of the absorbent inner body 2 along the width direction and ensure its flatness, the positions where the multiple first leg elastic components 15 intersect with the absorbent inner body 2 can be cut off during the preparation process, so that the first leg elastic component 15 located in the overlapping area of ​​the outer covering layer 1 and the absorbent inner body 2 is in an inelastic stress state.

[0080] The structure of the pants-type absorbent article of the third embodiment is different from that of the first embodiment in that the pants-type absorbent article of the third embodiment further comprises a crotch nonwoven fabric 17. The crotch nonwoven fabric 17 is located in the crotch portion S5 and is arranged on the side of the inner nonwoven fabric 13 away from the absorbent inner body 2, and is used to fix the first leg elastic component 15 together with the inner nonwoven fabric 13.

[0081] Furthermore, the inner nonwoven fabric 13 and the crotch nonwoven fabric 17 may have the same dimensions in the length direction and the width direction, and the dimensions of the inner nonwoven fabric 13 and the crotch nonwoven fabric 17 in the length direction are smaller than the dimensions of the absorbent inner body 2 .

[0082] The crotch non-woven fabric 17 is provided because the span of the first leg elastic component 15 and the second leg elastic component 16 along the length direction is relatively large. Therefore, the first leg elastic component 15 and the second leg elastic component 16 clamped by two layers of materials (the inner non-woven fabric 13 and the crotch non-woven fabric 17) need to be fixed, that is, the first leg elastic component 15 and the second leg elastic component 16 are fixed between the inner non-woven fabric 13 and the crotch non-woven fabric 17, and the fixing method can be a hot melt adhesive method.

[0083] In the third embodiment, the span of the first leg elastic component 15 and the second leg elastic component 16 in the length direction is relatively large, so the dimensions of the ventral part S3 and the dorsal part S4 in the length direction are also relatively large (compared with the first and second embodiments). In this way, the shorts-type absorbent article is made into a "high-waist" product, thereby ensuring the comfort of the product while also adding a different wearing experience.

[0084] The other structures of the shorts-type absorbent article in the third embodiment are substantially the same as those in the first embodiment, and will not be described in detail herein.

[0085] The above is a detailed introduction to the shorts-type absorbent article provided by the present invention. Specific examples are used herein to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A pants-type absorbent article having mutually orthogonal length direction, width direction and thickness direction, and respectively arranged along the length direction at the front waistline of the wearer's front waist, the back waistline of the wearer's back waist, the ventral part of the wearer's abdomen, the dorsal part of the wearer's back and the crotch part between the ventral part and the dorsal part, the pants-type absorbent article comprising an outer covering layer and an absorbent inner body arranged inside the outer covering layer along the length direction, characterized in that: The outer covering layer comprises a waist nonwoven fabric and a waist elastic component respectively arranged at the front waistline portion and the rear waistline portion and extending in the width direction, an elastic composite sheet respectively arranged at the ventral portion and the back portion and extending in the width direction, an inner nonwoven fabric correspondingly arranged at the crotch portion, and a first leg elastic component at least located between the elastic composite sheet and the inner nonwoven fabric at the back portion; the waist elastic component is coated inside the waist nonwoven fabric; Along the length direction, the waist non-woven fabrics located at the front waist portion and the back waist portion are respectively spliced ​​with the elastic composite sheet materials located at the ventral portion and the dorsal portion to form a waist portion, and the waist portion has a waist splicing composite area, and the waist splicing composite area is located at the junction of the waist non-woven fabric and the elastic composite sheet material; the inner layer non-woven fabric is respectively spliced ​​with the elastic composite sheet materials located at the ventral portion and the dorsal portion to form a leg portion, and the leg portion has a leg splicing composite area, and the leg splicing composite area is located at the junction of the elastic composite sheet material and the inner layer non-woven fabric; wherein, there are a plurality of first leg elastic components, which are spaced apart along the length direction, and each of the first leg elastic components extends along the width direction and is arranged to match the leg opening of the shorts-type absorbent article.

2. The pants-type absorbent article according to claim 1, wherein: Each of the first leg elastic components is a connection of multiple curves or a connection of a curve and a straight line along the width direction.

3. The pants-type absorbent article according to claim 1, wherein: The first leg elastic members located in the overlapping region of the outer cover layer and the absorbent inner body are arranged in a state without elastic stress.

4. The pants-type absorbent article according to claim 1, wherein: The pants-type absorbent article further comprises a crotch nonwoven fabric, which is located in the crotch and arranged on a side of the inner nonwoven fabric away from the absorbent inner body, and is used to fix the first leg elastic component together with the inner nonwoven fabric.

5. The pants-type absorbent article according to claim 4, wherein: The inner nonwoven fabric and the crotch nonwoven fabric have the same dimensions in the length direction and the width direction, and the dimensions of the inner nonwoven fabric and the crotch nonwoven fabric in the length direction are smaller than the dimension of the absorbent inner body.

6. The pants-type absorbent article according to claim 1, wherein: The absorbent inner body includes a liquid-permeable surface layer, an absorbent core layer, and a leakage-proof backing layer which are sequentially arranged in a direction from the skin side of the absorbent inner body to the non-skin side of the absorbent inner body.

7. The pants-type absorbent article according to claim 6, wherein: A crotch elastic component is arranged between the absorbent core layer and the anti-leakage bottom layer and along the length direction.

8. The pants-type absorbent article according to claim 7, wherein: The relationship between the dimension of the crotch elastic component along the length direction and the dimension of the absorbent inner body along the length direction is: L2*50%≤L1≤L2*90%, wherein L1 represents the dimension of the crotch elastic component along the length direction, and L2 represents the dimension of the absorbent inner body along the length direction.

9. The pants-type absorbent article according to claim 6, wherein: The absorbent inner body further includes a three-dimensional leakage-proof part extending in the length direction and arranged on both sides in the width direction, and a leakage-proof elastic component extending in the length direction is arranged inside the three-dimensional leakage-proof part.

10. The pants-type absorbent article according to claim 6, wherein: Embossed adhesive portions are provided at both ends of the absorbent inner body in the longitudinal direction and in regions joined to the outer cover layer. The embossed adhesive portions are staggered with the crotch elastic components of the pants-type absorbent article and the leakage-proof elastic components of the absorbent inner body in the longitudinal direction.

11. The pants-type absorbent article according to claim 1, wherein The outer covering layer also includes a plurality of second leg elastic components located between the elastic composite sheet and the inner non-woven fabric of the ventral portion and extending in the width direction, and the plurality of second leg elastic components are distributed at intervals along the length direction, wherein the second leg elastic components located in the overlapping area of ​​the outer covering layer and the absorbent inner body are configured to be in a state of no elastic stress.

12. The pants-type absorbent article according to claim 11, wherein The second leg elastic component is a straight line, a connection of multiple curves, or a connection of a curve and a straight line along the width direction.

13. The pants-type absorbent article according to claim 1, wherein Located in the waist splicing and composite area, the waist non-woven fabric and the elastic composite sheet are composited in the waist splicing and composite area by adopting at least one of hot melt adhesive, ultrasonic wave and heat pressing; located in the leg splicing and composite area, the elastic composite sheet and the inner layer non-woven fabric are composited in the leg splicing and composite area by adopting at least one of hot melt adhesive, ultrasonic wave and heat pressing.

14. The pants-type absorbent article according to claim 1, wherein A first fixing adhesive is provided on the inner surface of the waist non-woven fabric that is bent toward the skin side of the absorbent inner body, and the first fixing adhesive is used to fix the bent waist non-woven fabric.

15. The pants-type absorbent article according to claim 1, wherein A second fixing adhesive is provided on the non-skin side of the absorbent inner body, and the second fixing adhesive is used to adhere the elastic composite sheet and the inner layer nonwoven fabric to the absorbent inner body.

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