Disposable absorption article

Abstract

A disposable absorption article comprises an outer packaging body and an absorption body, the outer packaging body comprises a front waistline area, a rear waistline area and a crotch area between the front waistline area and the rear waistline area, and leakage-proof partition edges extending longitudinally are arranged on the two transverse sides of the absorption body. The front area and / or the rear area of the absorption body are / is provided with a first elastic component capable of transversely stretching out and drawing back, and the first elastic component is located at the end of the absorption body. An additional layer is arranged on the skin side of the front waistline area and / or the rear waistline area of the outer packaging body, the overlapping area of the additional layer and the absorption main body is located in a non-bonding area between the additional layer and the outer packaging body, and the additional layer and the absorption main body in the overlapping area of the additional layer and the absorption main body are bonded with each other. The elastic parts transversely extending at the front end and the rear end of the absorption body, the expandable part of the folding part of the additional layer and the bonding part between the additional layer and the waistline are matched to form an inner attaching ring in the waistline, and the double-attaching leakage-proof effect is achieved.

Description

Technical Field

[0001] The invention relates to a disposable absorbent article, in particular to a double elastic fitting and leakproof disposable pants-type absorbent article. Background Art

[0002] The existing pants-type absorbent articles include an outer body and an inner absorbent body. The outer body includes two layers of non-woven fabrics and an elastic element between the two layers of non-woven fabrics. The outer body forms an elastic waist and elastic leg parts. The inner absorbent body is attached to the skin side of the outer body. The area where the waist of the outer body overlaps with the absorbent core of the inner absorbent body is not provided with an elastic element. The absorbent body has a certain rigidity, and its bonding with the outer body has a certain influence on the elasticity of the waist area. The waist is cut off in the overlapping area by cutting the elastic band, so that the overlapping area has no elasticity, the waist elasticity is discontinuous, the waist fitting performance is reduced, and gaps are easily generated under the influence of the rigidity of the absorbent body, and the fitting and leak-proof effect is reduced. There is room for improvement. Summary of the invention

[0003] The present invention provides a disposable absorbent article, and more particularly, relates to a double elastic fit and leakproof disposable pants-type absorbent article, which improves the problem of unsatisfactory fit and leakproof performance caused by insufficient fit between the waist circumference of the outer body and the absorbent body of the existing pants-type absorbent article.

[0004] To achieve the above-mentioned object, the present invention is implemented through the following technical solutions: a disposable absorbent article, the absorbent article has a longitudinal direction which is the same as the length direction and a transverse direction which is the same as the width direction, the absorbent article has a skin side which is close to the skin when in use and a non-skin side which is away from the skin, the absorbent article comprises an outer body and an absorbent body, the outer body comprises a front waist region, a rear waist region and a crotch region between the front and rear waist regions, the absorbent body comprises a front region overlapping with the front waist region of the outer body, a middle region overlapping with the crotch region of the outer body, and a rear region overlapping with the rear waist region of the outer body, the absorbent body There are longitudinally extending leak-proof partition edges on both lateral sides, and the front area and / or the rear area of ​​the absorption body are provided with a laterally stretchable elastic component, and the elastic component is located at the end of the absorption body; an additional layer is provided on the skin side of the front waist area and / or the rear waist area of ​​the outer body, and the non-skin side of the additional layer and the outer body include a bonding area and a non-bonding area, the overlapping part of the additional layer and the absorption body is located between the absorption body and the outer body, and the overlapping area of ​​the additional layer and the absorption body is located in the non-bonding area between the additional layer and the outer body, and the additional layer and the absorption body are bonded to each other in the overlapping area between the additional layer and the absorption body.

[0005] Preferably, the front region and / or the back region of the absorbent body are not bonded to the outer body.

[0006] Preferably, the bonding area between the additional layer and the outer body includes two transverse end regions and one longitudinal end region of the additional layer, and the one longitudinal end region is close to the waist opening.

[0007] Preferably, the other longitudinal end of the additional layer away from the waist opening is folded along 1-4 folding lines to form a folded portion, the folding lines extend transversely, and the folded layers at both end portions of the folded portion are fixedly bonded.

[0008] Preferably, the absorbent body comprises a liquid permeable surface layer, a liquid impermeable bottom layer and an absorbent core between the liquid permeable surface layer and the liquid impermeable bottom layer, the elastic component in the front area and / or the back area of ​​the absorbent body is arranged between the liquid permeable surface layer and the liquid impermeable bottom layer, the elastic component is located in the overlapping area of ​​the absorbent body and the additional layer, and the absorbent core has no overlapping part with the additional layer.

[0009] Preferably, the elastic component is located within the folding portion area.

[0010] Preferably, the lateral widths of the front region and the rear region of the absorbent body are greater than the lateral width of the central region of the absorbent body.

[0011] Preferably, the front waistline and the back waistline of the outer body include a second elastic component, and the tensile stress of the first elastic component is greater than the tensile stress of the second elastic component.

[0012] By adopting the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: the technical scheme arranges an additional layer inside the outer body, the top and two side areas of the additional layer are bonded to the outer body, and the other areas are not bonded to the outer body, and a folding structure is formed away from the edge of the waist opening, and the two ends of the folding structure are fixed; the front and rear ends of the absorption body near the waist area have parts that are not connected to the outer body, and the front and rear ends of the absorption body are connected to the additional layer only in the area overlapping with the folded part of the additional layer, so that there is no directly connected part between the absorption body and the outer body, thereby reducing the influence of the rigidity of the absorption body on the waist, and the elastic elements of the waist are all connected The waistband is continuously configured to improve the appearance of the waistband, and the elastic body has stronger continuity and better fit; the front and rear ends of the absorbent body and the fixed area of ​​the additional layer are provided with transversely extending elastic components, the leak-proof partition edge provided on the absorbent body has a longitudinally stretched elastic component, and there is no direct connection between the end of the absorbent body and the outer body. Under the action of the longitudinal force of the leak-proof partition edge, the front and rear ends of the absorbent body are close to the body, and at the same time, the elastic components extending transversely at the front and rear ends of the absorbent body, the expandable part of the folded part of the additional layer, and the bonding part between the additional layer and the waistband cooperate to form an inner fitting circle inside the waistband, which has a double fitting and leak-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view of a plane unfolded according to Embodiment 1 of the present invention; Figure 2 For implementation case 1 Figure 1 Section view in AA direction; Figure 3 This is a perspective view of the plane including the bonding part of the implementation case 1; Figure 4 A cross-sectional structural diagram of the three-dimensional structural diagram of implementation case 1; Figure 5 It is a planar expansion schematic diagram of implementation case 2 of the present invention; Figure 6 This is a flow chart of the preparation process for implementation case 1. Implementation

[0014] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0015] The present invention provides a disposable absorbent article 1 having a longitudinal direction Y which is the same as the length direction and a transverse direction X which is the same as the width direction. The absorbent article 1 has a skin side close to the skin and a non-skin side away from the skin when in use.

[0016] refer to Figure 1-5 The absorbent article 1 includes an outer body 11 and an absorbent body 12. The outer body 11 includes an inner non-woven fabric, an outer non-woven fabric, and an elastic element arranged between the inner non-woven fabric and the outer non-woven fabric. The elastic element includes a waist elastic element and a leg elastic element. The waist elastic element is a plurality of laterally extending and continuous elements. According to the distribution of the waist elastic element and the leg elastic element, the outer body is divided into a front waist region 11A, a rear waist region 11B, and a crotch region 11C. The front waist region 11A and the rear waist region 11B constitute the waist region. The edge of the waist region longitudinally away from the absorbent body side is the distal edge, and the edge longitudinally close to the absorbent body side is the proximal edge.

[0017] The absorbent body 12 comprises a liquid permeable surface layer 121, a liquid impermeable bottom layer 122, and an absorbent core 123 between the liquid permeable surface layer and the liquid impermeable bottom layer. The absorbent body is divided into a front area 12A overlapping with the front waist area of ​​the outer body, a middle area 12C overlapping with the crotch area of ​​the outer body, and a rear area 12B overlapping with the rear waist area of ​​the outer body according to the overlap between the absorbent body and the waist area and the crotch area of ​​the outer body. The front area 12A or the rear area 12B of the absorbent body 12 is not bonded to the outer body, preferably the front area 12A and the rear area 12B are not bonded to the outer body, and the absorbent body 12 is bonded to the outer body through the bonding part 2432. The absorbent body 12 is provided with longitudinally extending leakproof partition edges 124 on both sides of the transverse direction, and the leakproof partition edges are provided with longitudinally extending leakproof partition edge elastic elements. The front area and the rear area of ​​the absorbent body are not directly connected to the waist area of ​​the outer body, which can reduce the influence of the rigidity of the absorbent body on the waist, and the appearance of the waist is more beautiful.

[0018] The outer body 11 is preferably covered with an additional layer 13 on the skin side of the front waist region 11A and the rear waist region 11B, the longitudinal length of the additional layer 13 is smaller than the longitudinal length of the front and rear waistlines, and the distance between the edge of the additional layer away from the absorbent body and the distal edge of the waistline is smaller than the distance between the edge of the additional layer close to the absorbent body and the proximal edge of the waistline, the additional layer 13 is bonded to the outer body 11 by a bonding portion 1 21A at the edge of the additional layer away from the absorbent body and bonding portions 2 21B on both lateral sides of the additional layer, and the area surrounded by bonding portion 1, bonding portion 2 and the edge of the additional layer close to the absorbent body is a non-bonded area 22; as a preferred embodiment, the additional layer 13 is provided with a folding structure close to the absorbent body, and is folded twice through folding lines L1 and L2, or can be folded more times, and both ends of the folding structure are fixed. The regional design of the bonding part 21A, 21B and the non-bonding area 22 is the implementation method of this embodiment. The non-bonding part is a part in which the additional layer can stretch away from its adjacent surface under the action of external force, forming a non-contact state with the adjacent surface. Therefore, as long as the distribution design of other bonding parts and non-bonding parts can achieve the same effect, they can be used as other implementation cases.

[0019] The absorbent body 12 has an elastic component 125 in the front area 12A or the back area 12B. The preferred solution is that the elastic component 125 is provided in both the front area 12A and the back area 12B. The elastic component 125 can be arranged between the liquid-permeable surface layer and the liquid-impermeable bottom layer, and the elastic component 121 does not overlap with the absorbent core 123. The elastic component 125 is closer to the longitudinal edge of the absorbent body 12 than the absorbent core. The elastic component 125 is arranged at a position overlapping with the folding structure area 131 of the additional layer 13. The absorbent body 12 is connected to each other through the bonding part 31 in the overlapping area formed by the overlap of the elastic component 125 and the folding structure area 131. The longitudinal end of the absorbent core 123 has a certain distance from the bonding part 31, and the distance is used to reduce the influence of the rigidity of the core body on the contraction of the elastic component 125, so that the elastic component 125 can function normally. The elastic component 125 can be any one of an elastic composite material, an elastic nonwoven fabric, and an elastic film. The tensile stress of the elastic component 125 is greater than the tensile stress of the waist elastic element. The tensile stress of the elastic component on the side of the absorbent body close to the inner side of the skin is greater than the tensile stress of the elastic waistline on the side away from the skin, making the inner side fit the human body better and achieving an inner leakage-proof effect. The inner elastic fit cooperates with the outer waistline to further enhance the leakage-proof effect.

[0020] In the implementation case 1 of the present design scheme, the lateral width of the absorption body 12 in the longitudinal front and back is the same, and it is in the shape of a long strip; in another optional implementation case 2, the lateral width of the absorption body 12 in the longitudinal front and back is wider than the lateral width in the longitudinal middle, and the absorption body is dumbbell-shaped. Compared with the implementation case 1, the front and back width of the absorption body 12 in the implementation case 2 is wider, and an elastic component with a wider lateral width is provided, so that its inner fitting surface is larger, further improving the fitting and leak-proof effect.

[0021] refer to Figure 6 , a preparation method for implementation case 1 is provided, comprising the following methods: (1) preparing an outer body: a1. The outer non-woven fabric 111 is transported along the conveying direction; a2. The waist elastic element 112 is transported and stretched along the conveying direction, an adhesive is applied to the waist elastic element by an applying device, and the waist elastic element is applied to the outer non-woven fabric 111; a3. The elastic element 113 is transported and stretched along the conveying direction, an adhesive is applied to the leg elastic element 113 by an applying device, and the leg elastic element 113 is applied to the outer non-woven fabric 111; a4. The inner non-woven fabric 114 is transported along the conveying direction, and the inner non-woven fabric 114 is covered on the waist elastic element 112 and the leg elastic element 113; a5. The outer non-woven fabric 111 is folded and covered on the inner non-woven fabric 114 on both sides perpendicular to the conveying direction by a folding mechanism.

[0022] (2) Adding an additional layer: b1. The additional layer 13 is transported along the conveying direction; b2. The additional layer 13 is folded on both sides perpendicular to the conveying direction by a folding mechanism; b3. The outer body is transported along the conveying direction, an adhesive is applied to the waist area of ​​the outer body, the folded additional layer is applied to the outer body, and the folded ends are pressed by heat or ultrasonic bonding to form a composite body.

[0023] (3) Preparing an absorbent body: c1. Preparing an absorbent core 123; c2. Conveying a liquid-impermeable bottom layer 122 along a conveying line, applying glue to the liquid-impermeable bottom layer 122 through a gluing device, and adding the absorbent core 123 onto the liquid-impermeable bottom layer 122; c3. Conveying a continuous elastic element 125 along a conveying line, cutting the continuous elastic element 125 into single pieces, transferring and pasting the single pieces onto the liquid-impermeable bottom layer 122 after being stretched by a stretching device and applied by a gluing device; c4. Conveying a liquid-permeable surface layer 121 compounded with a leak-proof partition edge along a conveying direction, and adding the liquid-permeable surface layer compounded with a leak-proof partition edge 124 onto the composite structure of step c3 to form a continuous absorbent body; c5. Cutting the continuous absorbent body into single-piece absorbent bodies 12.

[0024] (4) Applying adhesive to the ends and middle areas of the individual absorbent bodies, applying the individual absorbent bodies to the composite body, and then cutting, die-cutting, folding, and waist-side sealing to form a disposable absorbent article.

[0025] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A disposable absorbent article, the absorbent article having a longitudinal direction which is the same as the length direction and a transverse direction which is the same as the width direction, the absorbent article having a skin side close to the skin and a non-skin side away from the skin when in use, the absorbent article comprising an outer body and an absorbent body, the outer body comprising a front waist region, a rear waist region and a crotch region between the front and rear waist regions, the absorbent body comprising a front region overlapping with the front waist region of the outer body, a middle region overlapping with the crotch region of the outer body, and a rear region overlapping with the rear waist region of the outer body, the absorbent body having longitudinally extending leakproof partition edges on both transverse sides, characterized in that: The front area and / or the back area of ​​the absorption body is provided with a laterally stretchable elastic component, and the elastic component is located at the end of the absorption body; an additional layer is provided on the skin side of the front waist area and / or the back waist area of ​​the outer body, and the non-skin side of the additional layer and the outer body include a bonding area and a non-bonding area, the overlapping part of the additional layer and the absorption body is located between the absorption body and the outer body, the overlapping area of ​​the additional layer and the absorption body is located in the non-bonding area between the additional layer and the outer body, and the additional layer and the absorption body are bonded to each other in the overlapping area between the additional layer and the absorption body.

2. A disposable absorbent article according to claim 1, characterized in that: The front region and / or the rear region of the absorbent body are not bonded to the outer body.

3. A disposable absorbent article according to claim 1, characterized in that: The bonding area between the additional layer and the outer body includes two transverse end areas and one longitudinal end area of ​​the additional layer, and the one longitudinal end area is close to the waist opening.

4. A disposable absorbent article according to claim 3, characterized in that: The other longitudinal end of the additional layer away from the waist opening is folded along 1-4 folding lines to form a folded portion, the folding lines extend transversely, and the folded layers at both end portions of the folded portion are fixedly bonded.

5. A disposable absorbent article according to claim 1, characterized in that: The absorbent body comprises a liquid permeable surface layer, a liquid impermeable bottom layer and an absorbent core between the liquid permeable surface layer and the liquid impermeable bottom layer, the elastic component in the front area and / or the back area of ​​the absorbent body is arranged between the liquid permeable surface layer and the liquid impermeable bottom layer, the elastic component is located in the overlapping area of ​​the absorbent body and the additional layer, and the absorbent core has no overlapping part with the additional layer.

6. A disposable absorbent article according to claim 5, characterized in that: The elastic component is located within the folding portion area.

7. A disposable absorbent article according to claim 5, characterized in that: The lateral widths of the front region and the rear region of the absorbent body are greater than the lateral width of the central region of the absorbent body.

8. A disposable absorbent article according to claim 1, characterized in that: The front waistline and the back waistline of the outer body include a second elastic component, and the tensile stress of the first elastic component is greater than the tensile stress of the second elastic component.

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