Traceless waistline pants type paper diaper

Abstract

The utility model provides a traceless waistline trousers type paper diaper which comprises an outer water-repellent layer, an inner water-repellent layer, an abdomen rubber band covering layer, a waist elastic assembly and an absorption piece, the outer water-repellent layer is folded inwards to form a part covering the front section and the rear section of the absorption piece, the inner water-repellent layer is arranged between the absorption piece and the outer water-repellent layer, and an absorption core layer is arranged in the absorption piece. The waist elastic assembly and the external water-repellent layer are compounded to form a composite area, the abdomen rubber band covering layer and the external water-repellent layer are compounded with the abdomen rubber band, the waist elastic assembly comprises the waist water-repellent layer and an elastic body layer, the elastic body layer comprises a waist rubber band, and the waist water-repellent layer is arranged between the waist rubber band and the main body of the external water-repellent layer. The composite region is located outside the absorbent core layer. In addition, the elastomer layer can also be an elastic sheet. According to the traceless waistline pants-type paper diaper, the pressure intensity of the waistline on the inner side is reduced, the effects that the belly is not tightened by the rubber bands and tightening marks are removed are achieved, and in addition, the paper diaper has the advantages of layering sense, soft and comfortable hand feeling and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary products, in particular to a seamless waist pants-type diaper. Background Art

[0002] Diapers are becoming more and more popular because of their convenience in carrying, no need to wash, and easy replacement. In the process of using diapers, in order to ensure the stability of wearing diapers, elastic bands are usually added to the diapers at the corresponding position of the waist. The audience of diapers is generally the elderly and children. During the use of diapers, the pressure of the elastic band is too high, which can easily cause a sense of tightness or even tightness marks on the waist of the user, especially for children with delicate skin. This situation is more likely to occur. Utility Model Content

[0003] In view of the existing deficiencies, the purpose of the present utility model is to provide a seamless waist pants diaper to solve one or more of the above-mentioned technical problems.

[0004] The utility model provides a seamless waist pants-type diaper, comprising an external water-repellent layer, an internal water-repellent layer and an absorbent sheet, wherein the external water-repellent layer is folded inwardly to form a portion covering the front and rear sections of the absorbent sheet and an external water-repellent layer main body arranged at the bottom of the absorbent sheet, the internal water-repellent layer is between the absorbent sheet and the external water-repellent layer, and the absorbent sheet contains an absorbent core layer inside, and the seamless waist pants-type diaper also includes an abdominal elastic band covering layer and a waist elastic component, the waist elastic component and the external water-repellent layer are compounded to form a compound area, the abdominal elastic band covering layer and the external water-repellent layer are compounded with the abdominal elastic band, the waist elastic component includes at least one waist water-repellent layer and one elastic body layer, the elastic body layer includes a group of waist elastic bands, the waist water-repellent layer is placed between the waist elastic bands and the external water-repellent layer main body, and the compound area is located outside the absorbent core layer.

[0005] In some embodiments, the waist elastic component and the outer water-repellent layer are compounded by ultrasonic welding, and welding lines arranged parallel to the waistline direction are formed in the compounding area;

[0006] The composite area is 0-40 mm away from the proximal end of the absorbent core layer, and the arrangement spacing between the welding lines is 5-30 mm.

[0007] In some embodiments,

[0008] The composite area is 10-30 mm away from the proximal end of the absorbent core layer, and the arrangement spacing between the weld lines is 10-20 mm;

[0009] The weld pattern is in strip shape, and the weld pattern is composed of a minimum unit formed by a combination of a number of welding points arranged longitudinally.

[0010] The soldering point area is 0.5-8 mm2 The minimum unit is composed of at least one welding spot, the minimum spacing of welding spots in the minimum unit is 0-3 mm, and the minimum arrangement spacing between the minimum units is 1-5 mm.

[0011] In some embodiments,

[0012] The area of ​​the solder joint is 1-4 mm 2 The minimum spacing of the welding points in the minimum unit is 0-1.5 mm, and the minimum spacing between the minimum units is 2-3.5 mm;

[0013] The shape of the welding spot is one of sesame-shaped, circular, elliptical, rectangular, isosceles triangle, wavy, and crescent.

[0014] In some embodiments, the abdominal elastic covering layer and the outer water repellent layer are bonded by a set of sized abdominal elastics.

[0015] In some embodiments, the elastomer layer further comprises an elastic sheet, wherein the elastic sheet is an elastic cloth or an elastic film;

[0016] The structural relationship between the waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer is one of the following four situations:

[0017] Case 1: One of the waist water-repellent layers is arranged on the same layer as the abdominal elastic covering layer and is made of the same sheet material, and the sheet material and the inner water-repellent layer are arranged parallel to each other;

[0018] Case 2: The abdominal elastic covering layer and the inner water-repellent layer are made of the same sheet, which is parallel to the waist water-repellent layer;

[0019] Case 3: The waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer are made of the same sheet material, which is folded inward from the top to form a front end and a rear end, which cover the front and rear sections of the absorbent sheet respectively, but do not cover the absorbent core layer;

[0020] Case 4: the waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer are made of the same sheet material, which is folded inward from the bottom to form a front end and a rear end, and the front end and the rear end are located outside the absorbent core layer.

[0021] In some embodiments,

[0022] The surface density of the elastic sheet is 25-85g / m 2 ;

[0023] The waist elastic has a fineness of 400-1000 dtex, a number of 4-10 elastics, and an arrangement spacing of 4-10 mm;

[0024] The abdominal elastic band has a fineness of 200-700 dtex, a number of 8-40 elastic bands, and an arrangement spacing of 3-10 mm.

[0025] In some embodiments,

[0026] The surface density of the elastic sheet is 35-65g / m 2 ;

[0027] The waist elastic has a fineness of 600-800 dtex, a number of 5-8 elastics, and an arrangement spacing of 5-8 mm;

[0028] The abdominal elastic band has a fineness of 300-600 dtex, a number of 15-30 elastic bands, and an arrangement spacing of 4-6 mm.

[0029] In some embodiments,

[0030] The outer water-repellent layer and the inner water-repellent layer are one of hot air nonwoven fabric, spunbond nonwoven fabric and spunlace nonwoven fabric, and the surface density of the outer water-repellent layer and the inner water-repellent layer is 10-40g / m 2 ;

[0031] The abdominal elastic covering layer and the waist water-repellent layer are one of hot air non-woven fabric, spunbond non-woven fabric and spunlace non-woven fabric, and the surface density of the abdominal elastic covering layer and the waist water-repellent layer is 5-40g / m 2 .

[0032] In some embodiments,

[0033] The surface density of the outer water-repellent layer and the inner water-repellent layer is 15-30 g / m 2 ;

[0034] The surface density of the abdominal elastic covering layer and the waist water-repellent layer is 8-20 g / m 2 .

[0035] Beneficial effects:

[0036] The utility model describes a seamless waist pants-type diaper in which a single elastic band is replaced by an elastic component made of a composite of elastic bands or elastic films, cloths and non-woven fabrics arranged more closely at the waist, thereby greatly reducing the pressure of the waist on the inner side, thereby achieving the effect of not squeezing the belly with the elastic band and removing the squeezing marks; the outer layer material of the waist ultrasonic welding area forms a strip-shaped fluffy area through the welding pattern, which forms a sharper visual contrast with the natural contraction area of ​​the abdominal elastic band, making the product waist appearance more layered and soft and comfortable to the touch; the ultrasonic welding and fixing of the waist outer layer material effectively solves the problem that most bubble waist products on the market are often torn due to insufficient strength due to the excessive fluffy outer layer material; the outer side of the waist elastic band is covered with at least two layers of material, and the fluffy design formed by ultrasonic welding makes the elastic band achieve a completely "invisible" effect, eliminating or reducing the user's concern about the elastic band squeezing the belly. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A top plan view of a seamless waist pants diaper in some embodiments of the utility model;

[0038] Figure 2 This is a schematic diagram of the cross-sectional structure of a seamless waist pants diaper in Example 1;

[0039] Figure 3 It is a schematic diagram of the cross-sectional structure of a seamless waist pants-type diaper in Example 2;

[0040] Figure 4 This is a schematic diagram of the cross-sectional structure of a seamless waist pants diaper in Example 3;

[0041] Figure 5 This is a schematic diagram of the cross-sectional structure of a seamless waist pants diaper in Example 4. DETAILED DESCRIPTION

[0042] Example 1

[0043] Combination Figure 1 and Figure 2As shown, a seamless waist pants-type diaper disclosed in this embodiment includes an external water-repellent layer 1, an internal water-repellent layer 2 and an absorbent sheet 5, the external water-repellent layer 1 is folded inward to form a portion covering the front and rear sections of the absorbent sheet 5 and an external water-repellent layer main body arranged at the bottom of the absorbent sheet 5, the internal water-repellent layer 2 is between the absorbent sheet 5 and the external water-repellent layer 1, and the absorbent sheet 5 contains an absorbent core layer 51. The seamless waist pants-type diaper also includes an abdominal elastic covering layer 3 and a waist elastic component 4, the waist elastic component 4 and the external water-repellent layer 1 are compounded to form a composite area 7, the abdominal elastic covering layer 3 and the external water-repellent layer 1 are compounded by a group of glued abdominal elastic bands 6, the waist elastic component 4 includes two layers of waist water-repellent layers 41 and an elastic layer, the elastic layer includes a group of waist elastic bands 421, the waist water-repellent layer 41 is placed between the waist elastic bands 421 and the external water-repellent layer main body, and the composite area 7 is located outside the absorbent core layer 51.

[0044] The waist elastic component 4 and the outer water-repellent layer 1 can be laminated by ultrasonic welding, and welding lines arranged in parallel along the waistline direction are formed in the laminated area 7 .

[0045] The distance between the composite area 7 and the proximal end of the absorbent core layer 51 can be 0-40 mm, preferably 10-30 mm; the arrangement spacing between the weld lines can be 5-30 mm, preferably 10-20 mm.

[0046] The weld line can be strip-shaped, and the weld line can be composed of a minimum unit formed by a combination of a number of weld points 71 arranged longitudinally, wherein the area of ​​the weld point 71 can be 0.5-8 mm 2 , preferably 1-4 mm 2 The smallest unit is composed of at least one welding spot 71. The minimum spacing of the welding spots 71 in the smallest unit can be 0-3 mm, preferably 0-1.5 mm. The minimum spacing between the smallest units can be 1-5 mm, preferably 2-3.5 mm. In addition, the shape of the welding spot 71 can be one of sesame, round, elliptical, rectangular, isosceles triangle, wavy, and crescent.

[0047] One of the above-mentioned waist water-repellent layers is arranged in the same layer as the abdominal elastic covering layer 3 and is the same sheet material. The sheet material, the internal water-repellent layer 2 and the other waist water-repellent layer 41 are arranged parallel to each other. The waist water-repellent layer 41, the sheet material and the internal water-repellent layer 2 can be arranged in sequence from bottom to top. The waist elastic band 421 is located on the upper part of the abdominal elastic covering layer 3, the abdominal elastic band 6 is located on the lower part of the abdominal elastic covering layer 3, and the other side end of the abdominal elastic covering layer 3 coincides with one side end of the internal water-repellent layer 2.

[0048] The fineness of the waist elastic band 421 can be 400-1000 dtex, preferably 600-800 dtex; the number of waist elastic bands 421 in a group of waist elastic bands can be 4-10, preferably 5-8; the arrangement spacing of the waist elastic bands 421 in the same group of waist elastic bands can be 4-10 mm, preferably 5-8 mm.

[0049] The fineness of the abdominal elastic band 6 is 200-700 dtex, preferably 300-600 dtex; the number of the abdominal elastic bands 6 in a group of abdominal elastic bands is 8-40, preferably 15-30; the arrangement spacing of the abdominal elastic bands 6 in the same group of abdominal elastic bands is 3-10 mm, preferably 4-6 mm.

[0050] The outer water-repellent layer 1 and the inner water-repellent layer 2 can be one of hot air nonwoven fabric, spunbond nonwoven fabric, and spunlace nonwoven fabric. The surface density of the outer water-repellent layer 1 and the inner water-repellent layer 2 can be 10-40g / m 2 , preferably 15-30g / m 2 .

[0051] The abdominal elastic covering layer 3 and the waist water-repellent layer 41 can be one of hot air non-woven fabrics, spunbond non-woven fabrics, and spunlace non-woven fabrics. The surface density of the abdominal elastic covering layer 3 and the waist water-repellent layer 41 is 5-40g / m 2 , preferably 8-20g / m 2 .

[0052] Example 2

[0053] Combination Figure 1 and Figure 3 The content shown in the figure shows that a seamless waist pants-type diaper disclosed in this embodiment includes an outer water-repellent layer 1, an inner water-repellent layer 2 and an absorbent sheet 5, the outer water-repellent layer 1 is folded inward to form a portion covering the front and rear sections of the absorbent sheet 5 and an outer water-repellent layer body arranged at the bottom of the absorbent sheet 5, the inner water-repellent layer 2 is between the absorbent sheet 5 and the outer water-repellent layer 1, the absorbent sheet 5 includes an absorbent core layer 51 inside, the seamless waist pants-type diaper also includes an abdominal elastic covering layer and a waist elastic component 4, the waist elastic component 4 and the outer water-repellent layer 1 are compositely And a composite area 7 is formed, the abdominal elastic covering layer and the external water-repellent layer 1 are composited by a group of glued abdominal elastic bands 6, the waist elastic component 4 includes two layers of waist water-repellent layers 41 and an elastomer layer, the elastomer layer includes a group of waist elastic bands 421 and an elastic sheet 422, the elastic sheet 422 can be composited between the two layers of waist water-repellent layers 41 (the two layers of waist water-repellent layers 41 can be formed by folding the same sheet in half), the waist water-repellent layer 41 is placed between the waist elastic band 421 and the external water-repellent layer body, and the composite area 7 is located outside the absorbent core layer 51.

[0054] The waist elastic component 4 and the outer water-repellent layer 1 can be laminated by ultrasonic welding, and welding lines arranged in parallel along the waistline direction are formed in the laminated area 7 .

[0055] The distance between the composite area 7 and the proximal end of the absorbent core layer 51 can be 0-40 mm, preferably 10-30 mm; the arrangement spacing between the weld lines can be 5-30 mm, preferably 10-20 mm.

[0056] The weld line can be strip-shaped, and the weld line can be composed of a minimum unit formed by a combination of a number of weld points 71 arranged longitudinally, wherein the area of ​​the weld point 71 can be 0.5-8 mm 2 , preferably 1-4 mm 2 The smallest unit is composed of at least one welding spot 71. The minimum spacing of the welding spots 71 in the smallest unit can be 0-3 mm, preferably 0-1.5 mm. The minimum spacing between the smallest units can be 1-5 mm, preferably 2-3.5 mm. In addition, the shape of the welding spot 71 can be one of sesame, round, elliptical, rectangular, isosceles triangle, wavy, and crescent.

[0057] The elastic sheet 422 may be an elastic cloth or an elastic film;

[0058] The abdominal elastic covering layer and the internal water-repellent layer 2 are made of the same sheet material, which is parallel to the waist water-repellent layer 41. The areas on both sides of the sheet material corresponding to the positions of the abdominal elastic bands 6 are the abdominal elastic covering layers, wherein one end of the sheet material coincides with one end of the waist water-repellent layer 41, one end of a group of waist elastic bands 421 is between the sheet material and the absorbent sheet 5, and one end of the elastic sheet material 422 and the two layers of waist water-repellent layers 41 are between the sheet material and the main body of the external water-repellent layer.

[0059] The surface density of the elastic sheet 422 may be 25-85 g / m 2 , preferably 35-65g / m 2 .

[0060] The fineness of the waist elastic band 421 can be 400-1000 dtex, preferably 600-800 dtex; the number of waist elastic bands 421 in a group of waist elastic bands can be 4-10, preferably 5-8; the arrangement spacing of the waist elastic bands 421 in the same group of waist elastic bands can be 4-10 mm, preferably 5-8 mm.

[0061] The fineness of the abdominal elastic band 6 is 200-700 dtex, preferably 300-600 dtex; the number of the abdominal elastic bands 6 in a group of abdominal elastic bands is 8-40, preferably 15-30; the arrangement spacing of the abdominal elastic bands 6 in the same group of abdominal elastic bands is 3-10 mm, preferably 4-6 mm.

[0062] The outer water-repellent layer 1 and the inner water-repellent layer 2 can be one of hot air nonwoven fabric, spunbond nonwoven fabric, and spunlace nonwoven fabric. The surface density of the outer water-repellent layer 1 and the inner water-repellent layer 2 can be 10-40g / m 2 , preferably 15-30g / m 2 .

[0063] The abdominal elastic covering layer and the waist water-repellent layer 41 can be one of hot air non-woven fabrics, spunbond non-woven fabrics, and spunlace non-woven fabrics. The surface density of the abdominal elastic covering layer and the waist water-repellent layer 41 is 5-40g / m 2 , preferably 8-20g / m 2 .

[0064] Example 3

[0065] Combination Figure 1 and Figure 4 As shown, a seamless waist pants-type diaper disclosed in this embodiment includes an external water-repellent layer 1, an internal water-repellent layer 2 and an absorbent sheet 5, the external water-repellent layer 1 is folded inward to form a portion covering the front and rear sections of the absorbent sheet 5 and an external water-repellent layer main body arranged at the bottom of the absorbent sheet 5, the internal water-repellent layer 2 is between the absorbent sheet 5 and the external water-repellent layer 1, and the absorbent sheet 5 contains an absorbent core layer 51. The seamless waist pants-type diaper also includes an abdominal elastic covering layer and a waist elastic component 4, the waist elastic component 4 and the external water-repellent layer 1 are compounded to form a composite area 7, the abdominal elastic covering layer and the external water-repellent layer 1 are compounded by a group of glued abdominal elastic bands 6, the waist elastic component 4 includes at least one waist water-repellent layer and one elastic layer, the elastic layer includes a group of waist elastic bands 421, the waist water-repellent layer is placed between the waist elastic bands 421 and the external water-repellent layer main body, and the composite area 7 is located outside the absorbent core layer 51.

[0066] The waist elastic component 4 and the outer water-repellent layer 1 can be laminated by ultrasonic welding, and welding lines arranged in parallel along the waistline direction are formed in the laminated area 7 .

[0067] The distance between the composite area 7 and the proximal end of the absorbent core layer 51 can be 0-40 mm, preferably 10-30 mm; the arrangement spacing between the weld lines can be 5-30 mm, preferably 10-20 mm.

[0068] The weld line can be strip-shaped, and the weld line can be composed of a minimum unit formed by a combination of a number of weld points 71 arranged longitudinally, wherein the area of ​​the weld point 71 can be 0.5-8 mm 2 , preferably 1-4 mm 2 The smallest unit is composed of at least one welding spot 71. The minimum spacing of the welding spots 71 in the smallest unit can be 0-3 mm, preferably 0-1.5 mm. The minimum spacing between the smallest units can be 1-5 mm, preferably 2-3.5 mm. In addition, the shape of the welding spot 71 can be one of sesame, round, elliptical, rectangular, isosceles triangle, wavy, and crescent.

[0069] The waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer 2 are the same sheet material, which is folded inward from the bottom to form the front end and the rear end, and the sheet material body adjacent to the absorbent sheet 5, and the front end and the rear end are located outside the absorbent core layer 51. One end of the waist elastic 421 can be between the absorbent sheet 5 and the part of the outer water-repellent layer 1 folded inward to cover the front section of the absorbent sheet 5, and between the absorbent sheet 5 and the part of the outer water-repellent layer 1 folded inward to cover the rear section of the absorbent sheet 5. The front end, the rear end, and the area on the sheet material body corresponding to the waist elastic 421 can be used as the waist water-repellent layer, the areas on both sides of the sheet material body corresponding to the position of the abdominal elastic 6 are the abdominal elastic covering layer, and the other parts can be regarded as the inner water-repellent layer 2.

[0070] The fineness of the waist elastic band 421 may be 400-1000 dtex, preferably 600-800 dtex; the number of waist elastic bands 421 in a group of waist elastic bands may be 4-10, preferably 5-8; the arrangement spacing of the waist elastic bands 421 in the same group of waist elastic bands may be 4-10 mm, preferably 5-8 mm;

[0071] The fineness of the abdominal elastic band 6 is 200-700 dtex, preferably 300-600 dtex; the number of the abdominal elastic bands 6 in a group of abdominal elastic bands is 8-40, preferably 15-30; the arrangement spacing of the abdominal elastic bands 6 in the same group of abdominal elastic bands is 3-10 mm, preferably 4-6 mm.

[0072] The outer water-repellent layer 1 and the sheet material can be one of hot air nonwoven fabric, spunbond nonwoven fabric, and spunlace nonwoven fabric. The surface density of the outer water-repellent layer 1 and the sheet material can be 10-40g / m 2 , preferably 15-20g / m 2 .

[0073] Example 4

[0074] Combination Figure 1 and Figure 5As shown, a seamless waist pants-type diaper disclosed in this embodiment includes an external water-repellent layer 1, an internal water-repellent layer 2 and an absorbent sheet 5, the external water-repellent layer 1 is folded inward to form a portion covering the front and rear sections of the absorbent sheet 5 and an external water-repellent layer main body arranged at the bottom of the absorbent sheet 5, the internal water-repellent layer 2 is between the absorbent sheet 5 and the external water-repellent layer 1, and the absorbent sheet 5 contains an absorbent core layer 51. The seamless waist pants-type diaper also includes an abdominal elastic covering layer and a waist elastic component 4, the waist elastic component 4 and the external water-repellent layer 1 are compounded to form a composite area 7, the abdominal elastic covering layer and the external water-repellent layer 1 are compounded by a group of glued abdominal elastic bands 6, the waist elastic component 4 includes at least one waist water-repellent layer and one elastic layer, the elastic layer includes a group of waist elastic bands 421, the waist water-repellent layer is placed between the waist elastic bands 421 and the external water-repellent layer main body, and the composite area 7 is located outside the absorbent core layer 51.

[0075] The waist elastic component 4 and the outer water-repellent layer 1 can be laminated by ultrasonic welding, and welding lines arranged in parallel along the waistline direction are formed in the laminated area 7 .

[0076] The distance between the composite area 7 and the proximal end of the absorbent core layer 51 can be 0-40 mm, preferably 10-30 mm; the arrangement spacing between the weld lines can be 5-30 mm, preferably 10-20 mm.

[0077] The weld pattern can be strip-shaped, and the weld pattern can be composed of a minimum unit formed by a combination of a number of weld points 71 arranged longitudinally, wherein the area of ​​the weld point 71 can be 0.5-8 mm 2 , preferably 1-4 mm 2 The smallest unit is composed of at least one welding spot 71. The minimum spacing of the welding spots 71 in the smallest unit can be 0-3 mm, preferably 0-1.5 mm. The minimum spacing between the smallest units can be 1-5 mm, preferably 2-3.5 mm. In addition, the shape of the welding spot 71 can be one of sesame, round, elliptical, rectangular, isosceles triangle, wavy, and crescent.

[0078] The waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer 2 are the same sheet material, which is folded inward from the top to form the front end and the rear end, and the sheet body located below the absorbent sheet, the front end and the rear end respectively cover the front and rear sections of the absorbent sheet 5, but the front end and the rear end do not cover the absorbent core layer 51, and the waist elastic 421 can be between the front end and the part of the outer water-repellent layer 1 folded inward to cover the front section of the absorbent sheet 5, and between the rear end and the part of the outer water-repellent layer 1 folded inward to cover the rear section of the absorbent sheet 5. The front end and the rear end of the sheet material and the part corresponding to the composite area on the sheet material can be used as the waist water-repellent layer, the area on both sides of the sheet body corresponding to the position of the abdominal elastic 6 is the abdominal elastic covering layer, and the other parts can be regarded as the inner water-repellent layer 2.

[0079] The fineness of the waist elastic band 421 can be 400-1000 dtex, preferably 600-800 dtex; the number of waist elastic bands 421 in a group of waist elastic bands can be 4-10, preferably 5-8; the arrangement spacing of the waist elastic bands 421 in the same group of waist elastic bands can be 4-10 mm, preferably 5-8 mm.

[0080] The fineness of the abdominal elastic band 6 is 200-700 dtex, preferably 300-600 dtex; the number of the abdominal elastic bands 6 in a group of abdominal elastic bands is 8-40, preferably 15-30; the arrangement spacing of the abdominal elastic bands 6 in the same group of abdominal elastic bands is 3-10 mm, preferably 4-6 mm.

[0081] The outer water-repellent layer 1 and the sheet material can be one of hot air nonwoven fabric, spunbond nonwoven fabric, and spunlace nonwoven fabric. The surface density of the outer water-repellent layer 1 and the sheet material can be 10-40g / m 2 , preferably 15-20g / m 22 .

[0082] The above undisclosed matters can be directly implemented by using existing technologies, so they will not be elaborated here.

[0083] The above are only some preferred embodiments of the present invention. It should be pointed out that a person skilled in the art can make several similar modifications and improvements without departing from the inventive concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A seamless waist pants diaper, comprising an outer water-repellent layer, an inner water-repellent layer and an absorbent sheet, wherein the outer water-repellent layer is folded inward to form a portion covering the front and rear sections of the absorbent sheet and an outer water-repellent layer body disposed at the bottom of the absorbent sheet, the inner water-repellent layer is between the absorbent sheet and the outer water-repellent layer, and the absorbent sheet contains an absorbent core layer, characterized in that: The seamless waist pants-type diaper also includes an abdominal elastic covering layer and a waist elastic component, the waist elastic component and the external water-repellent layer are compounded to form a composite area, the abdominal elastic covering layer and the external water-repellent layer are compounded with the abdominal elastic, the waist elastic component includes at least one waist water-repellent layer and one elastic layer, the elastic layer includes a group of waist elastics, the waist water-repellent layer is placed between the waist elastic and the external water-repellent layer body, and the composite area is located outside the absorbent core layer.

2. A seamless waist pants diaper according to claim 1, characterized in that: The waist elastic component and the outer water-repellent layer are compounded by ultrasonic welding, and welding lines arranged parallel to the waistline direction are formed in the compounding area; The composite area is 0-40 mm away from the proximal end of the absorbent core layer, and the arrangement spacing between the welding lines is 5-30 mm.

3. A seamless waist pants diaper according to claim 2, characterized in that: The composite area is 10-30 mm away from the proximal end of the absorbent core layer, and the arrangement spacing between the weld lines is 10-20 mm; The weld pattern is in strip shape, and the weld pattern is composed of a minimum unit formed by a combination of a number of welding points arranged longitudinally. The soldering point area is 0.5-8 mm 2 The minimum unit is composed of at least one welding spot, the minimum spacing of welding spots in the minimum unit is 0-3 mm, and the minimum arrangement spacing between the minimum units is 1-5 mm.

4. A seamless waist pants diaper according to claim 3, characterized in that: The area of ​​the solder joint is 1-4 mm 2 The minimum spacing of the welding points in the minimum unit is 0-1.5 mm, and the minimum spacing between the minimum units is 2-3.5 mm; The shape of the welding spot is one of sesame-shaped, circular, elliptical, rectangular, isosceles triangle, wavy, and crescent.

5. The seamless waist pants diaper according to claim 1, characterized in that: The abdominal elastic covering layer and the outer water repellent layer are bonded by a set of sized abdominal elastics.

6. A seamless waist pants diaper according to any one of claims 1 to 5, characterized in that: The elastomer layer further comprises an elastic sheet material, wherein the elastic sheet material is an elastic cloth or an elastic film; The structural relationship between the waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer is one of the following four situations: Case 1: One of the waist water-repellent layers is arranged on the same layer as the abdominal elastic covering layer and is made of the same sheet material, and the sheet material and the inner water-repellent layer are arranged parallel to each other; Case 2: The abdominal elastic covering layer and the inner waterproof layer are made of the same sheet, which is parallel to the waist waterproof layer; Case 3: The waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer are made of the same sheet material, which is folded inward from the top to form a front end and a rear end, which cover the front and rear sections of the absorbent sheet respectively, but do not cover the absorbent core layer; Case 4: the waist water-repellent layer, the abdominal elastic covering layer and the inner water-repellent layer are made of the same sheet material, which is folded inward from the bottom to form a front end and a rear end, and the front end and the rear end are located outside the absorbent core layer.

7. The seamless waist pants diaper according to claim 6, characterized in that: The surface density of the elastic sheet is 25-85g / m 2 ; The waist elastic band has a fineness of 400-1000 dtex, a number of 4-10 bands, and an arrangement spacing of 4-10 mm; The thinness of the abdominal elastic band is 200-700 dtex, the number is 8-40, and the arrangement spacing is 3-10 mm.

8. The seamless waist pants diaper according to claim 7, characterized in that: The surface density of the elastic sheet is 35-65g / m 2 ; The waist elastic has a fineness of 600-800 dtex, a number of 5-8 elastics, and an arrangement spacing of 5-8 mm; The abdominal elastic band has a fineness of 300-600 dtex, a number of 15-30, and an arrangement spacing of 4-6 mm.

9. A seamless waist pants diaper according to any one of claims 1 to 5, characterized in that: The outer water-repellent layer and the inner water-repellent layer are one of hot air nonwoven fabric, spunbond nonwoven fabric and spunlace nonwoven fabric, and the surface density of the outer water-repellent layer and the inner water-repellent layer is 10-40g / m 2 ; The abdominal elastic covering layer and the waist water-repellent layer are one of hot air non-woven fabric, spunbond non-woven fabric and spunlace non-woven fabric, and the surface density of the abdominal elastic covering layer and the waist water-repellent layer is 5-40g / m 2 .

10. The seamless waist pants diaper according to claim 7, characterized in that: The surface density of the outer water-repellent layer and the inner water-repellent layer is 15-30 g / m 2 ; The surface density of the abdominal elastic covering layer and the waist water-repellent layer is 8-20 g / m 2 .

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