Bubble waistline structure of paper diaper

Abstract

The utility model discloses a bubble waistline structure of a paper diaper, which belongs to the technical field of absorption product supporting structures and comprises an absorption main body formed by connecting a bottom layer, an absorption core and a surface layer, and a double-layer bubble waistline is arranged at the end of the absorption main body. The waistline is composed of bent outer-layer water-repellent cloth, inner-layer water-repellent cloth, elastic wires and a plurality of discrete welding spots. Bubble cavities are formed among the cloth through the welding spots, and the welding spots at least comprise sparse welding spots and dense welding spots, so that the waistline is in a bubble shape on the inner side and the outer side of the absorption main body. The inner lining and the outer lining of the waistline structure are bonded through the dot matrix welding spots to form an inner and outer bubble structure, and the stiffness of the waistline structure is improved and the wearing stability of a paper diaper product is improved on the premise that fluffy and soft touch of the surface of the waistline structure is guaranteed through a reasonable water-repellent cloth folding composite structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the support or fixing device technical field of absorbent article, specifically discloses a bubble waistline structure of paper diaper. BACKGROUND

[0002] The bubble waistline structure adopts intermittent composite technology, contains at least two layers of non-woven fabrics, and fixes a plurality of elastic filaments between the discontinuous composite points and the non-woven fabric materials. The natural shrinkage of the elastic filaments is combined with the inherent elasticity of the non-woven fabric materials to form a plurality of cavities with elasticity and loftiness on the surface of the non-woven fabric, thereby forming a belt-shaped structure. When the structure is applied to the waistline part of the absorbent article, the pressure applied by the elastic filaments directly through the outer non-woven fabric can be reduced, the comfort of the user's waist can be optimized, and the tightness can be reduced.

[0003] In the current technical field, a traceless partition type organ waistline structure is disclosed. The structure combines a plurality of non-woven fabrics and adopts an inner-outer layered manner to construct a waistline elastic filament layout containing at least 2 layers and 3 groups. By adjusting the spacing between the elastic filaments and the position of the intermittent composite points, a new bubble waistline structure with better covering and constraint levels is formed compared with the traditional elastic bubble waistline structure, and a style composed of a plurality of non-woven fabrics connected end to end is displayed to simplify the local processing process.

[0004] However, the structure still has room for optimization. Specifically, the elastic filament structure has a multi-layer layout, and the outer elastic filaments have an organ bubble structure, but the inner layer does not have the same organ bubble body because it is not connected by intermittent ultrasonic welding. Although the inner-outer layered structure of the product improves the tension of the elastic filaments on the skin of the user, the non-woven fabric on the side of the skin does not fully reflect the fluffy touch of the organ bubble, and the user may still feel uncomfortable in some situations. UTILITY MODEL CONTENT

[0005] In view of the technical defects in the background art, the utility model provides a bubble waistline structure of paper diaper, which solves the above technical problems and meets the actual needs. The specific technical scheme is as follows:

[0006] A bubble waistline structure of paper diaper, comprising an absorbent main body formed by sequentially connecting a bottom layer, an absorbent core and a surface layer, and a double-layer bubble waistline arranged at the end of the length direction of the absorbent main body;

[0007] The double-layer bubble waistline is composed of at least a bent outer water-repellent cloth, an inner water-repellent cloth, elastic threads arranged between the outer water-repellent cloth and the inner water-repellent cloth or in the inner water-repellent cloth, and a plurality of discrete welding points for intermittently combining the outer water-repellent cloth and the inner water-repellent cloth.

[0008] The area where the elastic threads in the interlayer of the outer water-repellent cloth and the inner water-repellent cloth are arranged is close to the lower absorbent body, and the area forms a lower waistline.

[0009] The area where the elastic threads in the interlayer of the inner water-repellent cloth after being folded are arranged is close to the upper edge of the double-layer bubble waistline, and the area forms an upper waistline.

[0010] The discrete welding points include at least sparse discrete welding points and dense discrete welding points.

[0011] The total height of the fabric area where the sparse discrete welding points of the upper waistline on the inner side and the upper waistline on the outer side are arranged in the length direction of the absorbent body is 69-90 mm.

[0012] The dense discrete welding points are arranged in rows, the dense discrete welding points in different rows are staggered, the distance between the adjacent two dense discrete welding points in the same row is smaller than the distance between any two dense discrete welding points arranged in different rows.

[0013] The total height of the fabric area where the dense discrete welding points of the lower waistline on the inner side and the lower waistline on the outer side are arranged in the length direction of the absorbent body is 20-30 mm.

[0014] The edge of the fold of the inner water-repellent cloth after being folded outward does not exceed the upper edge of the double-layer bubble waistline.

[0015] The shape of the sparse discrete welding points is at least one of a dot, a star, parallel lines, a triangle, and a square.

[0016] The utility model has the beneficial effect that the technical scheme forms the inside and outside bubble structure through the discrete welding point of different interval distribution to tightly bond the inside and outside lining of the waistline structure, carries out complete package to the waistline fabric area where the elastic silk is located, simultaneously still set up the inside and outside water -repellent cloth folding composite structure of stratified distribution, this act not only ensures the fluffy soft touch of the waistline part surface, still significantly promotes the rigidity of waistline structure, strengthens the stability of paper diaper in the wearing process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of bubble waistline structure that the utility model discloses.

[0018] Figure 2 It is the discrete welding point distribution effect of the outside water -repellent cloth flat state Figure 1 .

[0019] Figure 3 It is the discrete welding point distribution effect of the outside water -repellent cloth flat state Figure 2 .

[0020] Figure 4 It is the shape schematic diagram of the discrete welding point.

[0021] Among them: 1 - bottom layer;2 - absorbent core;3 - surface layer;4 - double -layer bubble waistline;4A - upper waistline;4B - lower waistline;40 - outer water -repellent cloth;41 - inner water -repellent cloth;41A - folding edge;42 - elastic silk;43 - discrete welding point;43A - sparse discrete welding point;43B - dense discrete welding point;5 - bubble cavity. DETAILED DESCRIPTION

[0022] The embodiment of the utility model is not limited to the following examples, and the utility model relates to the necessary components of the related technical field, and should be regarded as the known technology in the technical field, which can be known and mastered by the technical personnel in the technical field.

[0023] Combined Figures 1 to 4 The utility model discloses a bubble waistline structure of paper diaper, including the absorbent main body that is formed by the bottom layer 1, absorbent core 2 and surface layer 3 are connected in proper order, and the end of absorbent main body length direction is provided with double -layer bubble waistline 4, to Figure 1 For reference example, the vertical direction is the length direction of absorbent main body, and the upper is more close to the mouth along of waistline, and the lower is more close to the crotch area of product;

[0024] The double-layer bubble waistline 4 is composed of at least the bended outer water-repellent cloth 40, the inner water-repellent cloth 41, the elastic yarn 42 arranged between the outer water-repellent cloth 40 and the inner water-repellent cloth 41 or inside the inner water-repellent cloth 41, and the several discrete welding points 43 intermittently connecting the outer water-repellent cloth 40 and the inner water-repellent cloth 41. The inner water-repellent cloth 41 is further folded after one side close to the inside of the absorbent body is folded, and the bubble cavity 5 is formed between the outer water-repellent cloth 40 and the inner water-repellent cloth 41 through the connection of the discrete welding points 43. Wherein, Figure 2 The bubble cavity 5 is not in the state of being flat, but in order to facilitate the illustration of the bubble cavity 5 structure formed between the discrete welding points 43, the position of the bubble cavity 5 is marked with a dashed line frame column and the illustration is shown. In the flat state and separated from the inner water-repellent cloth 41 and the elastic yarn 42, only the discrete welding points 43 and the outer water-repellent cloth 40 cannot form the bubble cavity 5, and Figure 1 The representation of the bubble cavity 5 is dispersed, and Figure 2 The display of the bubble cavity 5 is long strip-shaped, and the reasons for the expression difference are that, Figure 1 If the continuous representation will make the picture line elements too much, which will affect the feature recognition, therefore the final forming effect of the bubble cavity 5 is mainly referred to Figure 2

[0025] The area where the elastic yarn 42 in the interlayer composed of the outer water-repellent cloth 40 and the inner water-repellent cloth 41 is close to the lower absorbent body, which forms the lower waistline 4B; the area where the elastic yarn 42 in the interlayer composed of the inner water-repellent cloth 41 after folding itself is close to the upper edge of the double-layer bubble waistline 4, which forms the upper waistline 4A; the number of elastic yarns 42 not overlapping between the upper waistline 4A and the lower waistline 4B is not more than 4;

[0026] And the discrete welding points 43 at least include sparse discrete welding points 43A and dense discrete welding points 43B, the upper waistline 4A is provided with sparse discrete welding points 43A, and the lower waistline 4B is provided with dense discrete welding points 43B.

[0027] ​In the scheme of the utility model, the outer layer water repellent cloth 40 and the inner layer water repellent cloth 41 are both folded, and the two are discontinuously compounded through discrete welding points 43, wherein the inner layer water repellent cloth 41 is folded from the lower side to the upper side and is compounded with the inner surface of the outer layer water repellent cloth 40 through discrete welding points 43 near the inner side of the absorbent article, that is, the side of the absorbent article that is attached to the skin of the user when worn, under the elastic force of the elastic wire 42, the fabric around the discrete welding points 43 is deformed due to the difference in elastic force deformation, forming an accordion-shaped bubble cavity 5, since the discrete welding points 43 exist inside and outside, the bubble cavity 5 also realizes internal and external distribution, completely wrapping the waist circumference structure, allowing the user to maximize the avoidance of the tension of the elastic wire 42 when worn, and the air permeability is also well guaranteed, in order to make the overall stiffness of the double-layer bubble waist circumference 4 better, avoid its easy wrinkling due to the movement of the user's limbs, the inner layer water repellent cloth 41 is folded once more, increasing the overall thickness, which can effectively improve the structure of the double-layer bubble waist circumference 4, and the structure strength of the double-layer bubble waist circumference 4 is also improved, the user is less likely to cause skin discomfort due to waist circumference wrinkles caused by limb movement when wearing, and the absorbent article can better fit the user's body, avoiding leaks during absorption.

[0028] Among them, the discrete welding points 43 have two layout specifications, one is sparse discrete welding points 43A, and the other is dense discrete welding points 43B, so that Figures 1 to 3 The layout position and style shown are examples, as the name implies, the discrete welding points 43 mean that the welding points are not continuously close, but there is a visible gap, on this basis, by changing the gap value between the welding points, forming sparse discrete welding points 43A with relatively large relative spacing and dense discrete welding points 43B with relatively small relative spacing, in combination with the distribution of the upper and lower waist circumference described above, the area where the elastic wire 42 in the sandwich of the outer layer water repellent cloth 40 and the inner layer water repellent cloth 41 is close to the lower absorbent main body, this area forms the lower waist circumference 4B; the area where the elastic wire 42 in the sandwich of the inner layer water repellent cloth 41 folded itself is close to the upper edge of the double-layer bubble waist circumference 4, this area forms the upper waist circumference 4A, the distribution of the elastic wire 42 has levels, and the position of the discrete welding points 43 mainly exists in the position of the upper waist circumference 4A, this part of the structure is closer to the user's skin side and therefore needs to be wrapped by the accordion-shaped bubble cavity 5 for pressure relief, and the upper waist circumference 4A mainly functions to fix the absorbent article, and also needs to be closely distributed to ensure adhesion, the existence of the bubble cavity 5 inside and outside is more conducive to the comfort experience of the user; the lower waist circumference 4B is close to the lower abdominal area of the user, and the tension requirement here is low, so a small amount or no discrete welding points 43 need to be set to meet the user's comfort needs, the dense discrete welding points 43B here mainly function to stabilize the bubble cavity 5 forming effect and the structure firmness of the double-layer bubble waist circumference 4.

[0029] And, the elastic yarn 42 in the lower waistline 4B region is arranged outward, and the arrangement position is easy to overlap with the position where the thickness of the absorbent body (including the bottom layer 1, the absorbent core 2 and the surface layer 3) is large, and the buffering effect of the elastic cavity 5 is not needed, and preferably not overlapping with the elastic yarn 42 layout of the upper waistline 4A, avoiding the waste of elastic force, and no more than 4.

[0030] In combination Figure 2 Or Figure 3 As one of the preferred embodiments of the utility model, a plurality of sparse discrete welding points 43A are arranged in rows, the size of a single sparse discrete welding point 43A is not more than 2.5mmx2.5mm, the row spacing of the sparse discrete welding points 43A is 2.5mm-5mm, and the column spacing is 5mm-15mm, wherein the size of a single sparse discrete welding point 43A is preferably 1.5mmx1.5mm, and the size of the row spacing and the column spacing is adaptively enlarged or reduced according to the size of the user, and the row spacing is less than the column spacing, which is helpful to the formation of the bubble cavity 5 in the shape of an organ.

[0031] Further preferably, in the above embodiment, Figure 2 Or Figure 3 As an example shown in the drawings, the total height of the fabric area where the sparse discrete welding points 43A arranged on the inner upper waistline 4A and the outer upper waistline 4A is 69mm-90mm in the length direction of the absorbent body, and the total height is based on the overall height of the outer waterproof cloth 40 in the flat state, and the height of the area where the sparse discrete welding points 43A are distributed is 69mm-90mm, which can adapt to the wearing needs of users from infants to adults.

[0032] In combination Figure 2 Or Figure 3 As one of the preferred embodiments of the utility model, a plurality of sparse discrete welding points 43A are arranged in rows, the size of a single sparse discrete welding point 43A is not more than 2.5mmx2.5mm, the row spacing of the sparse discrete welding points 43A is 2.5mm-5mm, and the column spacing is 5mm-15mm, wherein the size of a single sparse discrete welding point 43A is preferably 1.5mmx1.5mm, and the size of the row spacing and the column spacing is adaptively enlarged or reduced according to the size of the user, and the row spacing is less than the column spacing, which is helpful to the formation of the bubble cavity 5 in the shape of an organ.

[0033] Further preferably, in the above embodiment, Figure 2 Or Figure 3As shown, the total height of the fabric area where the dense discrete welding points 43B on the inner side of the lower waistline 4B and the outer side of the lower waistline 4B are arranged in the length direction of the absorption body is 20-30mm. The total height at this position is the sum of the heights of the strip-shaped areas distributed by the dense discrete welding points 43B on the upper and lower ends in the height direction of the outer layer water-repellent cloth 40. Since the main function of this position is to stabilize the organ-like bubble structure, the height does not need to be too high, that is, the height of a single strip-shaped area of the dense discrete welding points 43B is 10-15mm.

[0034] In combination Figure 1 As shown, as one of the preferred embodiments of the present application, the folded edge 42A of the inner layer water-repellent cloth 41 folded outward after the inward folding of the inner layer water-repellent cloth 41 is combined with the inner layer water-repellent cloth 41 itself. The edge of the folded edge 41A does not exceed the edge of the double-layer bubble waistline 4. The function of this structure has been described above. The height does not exceed the edge of the double-layer bubble waistline 4, that is, does not exceed the crease position of the initial folding of the inner layer water-repellent cloth 41.

[0035] In combination Figures 2 to 4 As shown, as one of the preferred embodiments of the present application, the shape of the sparse discrete welding points 43A is at least one of a dot, a star, parallel lines, a triangle, and a square. The sparse discrete welding points 43A of each shape can help to change the edge profile of the bubble cavity 5 and the visual perception of the overall double-layer bubble waistline 5, and at the same time, make the wearing touch of the waistline have certain differentiation, which is helpful to increase the product category. At the same time, the structural strength of the welding points of different shapes will also be different, which can also meet the needs of different users.

[0036] As a supplement, the end portion in the length direction of the absorption body is combined in the opening of the double-layer bubble waistline 4 after folding. One side of the surface layer 3 is combined with the outer layer water-repellent cloth 40, and one side of the bottom layer 1 is combined with the inner layer water-repellent cloth 41. As shown, Figure 1 In this way, the structure of the double-layer bubble waistline 4 can be relatively complete. The position of the lower waistline 4B needs to be fully combined with the absorption body part, and the upper waistline 4A area can exist independently. Through the action of the inner and outer bubble cavities 5, the tightness of the waist of the user during wearing is improved, and the space for air circulation is increased, and the stuffy feeling of the waist skin during wearing is reduced.

[0037] Overall, the technical scheme of the present application tightly bonds the inner and outer linings of the waistline structure through the discrete welding points distributed at different intervals, forming an inner and outer bubble structure. This not only completely wraps the waistline fabric area where the elastic yarn is located, but also sets up a layered distribution of the inner and outer water-repellent cloth folding and combining structure. This not only ensures the fluffy and soft touch of the surface of the waistline part, but also significantly improves the rigidity of the waistline structure, thereby enhancing the stability of the diaper during wearing.

[0038] In addition, through the design of the discrete welding points distributed intermittently, the waistline hard edge problem caused by the traditional continuous welding seam is effectively avoided, so that the user feels more smooth and comfortable waistline edge when wearing.

[0039] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A bubble waist structure of a paper diaper, comprising an absorbent main body formed by sequentially connecting a bottom layer, an absorbent core and a top layer, and a double-layer bubble waist structure arranged at the end of the absorbent main body in the length direction, characterized in that: the double-layer bubble waist structure is composed of a bent outer water-repellent cloth, an inner water-repellent cloth, elastic filaments arranged between the outer water-repellent cloth and the inner water-repellent cloth or in the inner water-repellent cloth, and a plurality of discrete welding points intermittently connecting the outer water-repellent cloth and the inner water-repellent cloth, and the edge of the inner water-repellent cloth close to the inner side of the absorbent main body is further folded before being compounded, and the discrete welding points form bubble cavities between the outer water-repellent cloth and the inner water-repellent cloth on the inner and outer sides of the absorbent main body; the area where the elastic filaments in the interlayer compounded with the outer water-repellent cloth and the inner water-repellent cloth is close to the lower absorbent main body, and this area forms a lower waistline; the area where the elastic filaments in the interlayer compounded with the inner water-repellent cloth after being folded is close to the edge of the upper double-layer bubble waist structure, and this area forms an upper waistline; the number of elastic filaments not overlapping between the upper waistline and the lower waistline is not more than 4; and the discrete welding points at least include sparse discrete welding points and dense discrete welding points, the sparse discrete welding points are arranged in the upper waistline, and the dense discrete welding points are arranged in the lower waistline. The sparse discrete welding points are arranged in rows and columns, the area of a single sparse discrete welding point is not more than 2.5 mm x 2.5 mm, the row spacing of the sparse discrete welding points is 2.5 mm-5 mm, and the column spacing is 5 mm-15 mm.

2. The bubble waist feature of a diaper according to claim 1, characterized in that The total height of the fabric area where the sparse discrete welding points of the inner side upper waistline and the outer side upper waistline are arranged in the length direction of the absorbent main body is 69 mm-90 mm.

3. The bubble waist structure of a paper diaper according to claim 2, characterized in that, The dense discrete welding points are arranged in rows, the dense discrete welding points in different rows are staggered, and the distance between the adjacent two dense discrete welding points in the same row is less than the distance between any two dense discrete welding points in different rows.

4. The bubble waist structure of the paper diaper according to claim 1, characterized by, The total height of the fabric area where the dense discrete welding points of the inner side lower waistline and the outer side lower waistline are arranged in the length direction of the absorbent main body is 20 mm-30 mm.

5. The bubble waist structure of a paper diaper according to claim 4, characterized in that, The folded edge of the section of the inner water-repellent cloth close to the inner side of the absorbent main body after being folded outward is compounded with the inner water-repellent cloth, and the edge of the folded edge does not exceed the edge of the double-layer bubble waist structure.

6. The bubble waist structure of the paper diaper according to claim 1, characterized by, The shape of the sparse discrete welding points is at least one of a dot, a star, parallel lines, a triangle, and a square.

7. The bubble waist structure of the paper diaper according to claim 1, characterized by, ​

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