A disposable absorbent article
By adopting the cladding structure and welding point design in the leakage-proof partition of disposable absorbent items, the problems of discomfortable leakage-proof partitions and poor leakage-proof effect in the prior art are solved, and better leakage-proof effect is achieved and experience while reducing production costs.
Patent Information
- Application Number
- CN202010994027.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-09-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2040-09-21
AI Technical Summary
The leakage-proof partitions of existing disposable absorbent items cause discomfort and poor leakage-proof effect during use, mainly because the elastic shrinkage material is directly attached to the skin during the shrinkage process, resulting in increased hardness and free edge inward. Move, affecting the absorption effect.
The leakage-proof partition design is adopted, including a connecting part and a telescopic part, the telescopic part is coated with the first and second cladding layers, and a welding point is formed by ultrasonic welding or hot pressing to limit the misalignment movement of the elastic shrinkage material. , avoid the glue compound directly contacting the skin, forming a loose state to improve adhesion and leakage prevention effect.
Improves leakage protection effect and comfort of the leakage-proof partition, reduces areas that are directly in contact with the skin, reduces discomfort, and at the same time, small improvements are made on the existing production lines, reducing costs and improving the overall performance of the product .
Smart Images
Figure CN111956399B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a disposable absorbent article. Background Art
[0002] Disposable absorbent articles, such as sanitary napkins for women, disposable diapers for adult incontinence, disposable diapers, training diapers, etc., are well known. The main function of such disposable absorbent articles is to absorb and contain body excreta, and such articles are also used to prevent body excreta from soiling, wetting or otherwise contaminating clothing or other articles in contact with the wearer.
[0003] In order to prevent body excrement from leaking from the lateral sides of disposable absorbent articles, leak-proof partitions are usually provided on the lateral sides of the absorbent articles. Figure 1 As shown, the leak-proof edge of most diapers is formed by spraying glue on the elastic shrinkable material 1' and adhering it to the middle part of the water-repellent non-woven fabric 2' in the width direction, and then spraying glue on one side of the water-repellent non-woven fabric 2' compounded with the elastic shrinkable material 1' and folding and bonding it to cover the elastic shrinkable material 1'. After folding, the two edges located on the same side are respectively bonded and connected to the liquid-impermeable bottom layer 3' and the liquid-permeable surface layer 4', and the other edge containing the folding line forms a free edge 5'. Since the elastic shrinkable material 1' is located on the free edge 5', when wearing, the elastic shrinkable material 1' shrinks, thereby driving the water-repellent non-woven fabric 2' to gather and shrink toward the middle part, so that it adheres to the human skin; another example is the leak-proof edge of the existing sanitary napkin, the hygroscopic article disclosed in Chinese Patent Application No.: 01120720.5, which discloses in detail the structure of the leak-proof side wall (that is, the leak-proof edge), and the elastic and stretchable material is made of spandex yarn or elastic rubber with a fineness of several hundred deniers. The leak-proof partition described above has a relatively large hardness of the free edge of the leak-proof partition because the elastic shrinkage material is coated with the water-repellent non-woven fabric by spraying glue, and the elastic shrinkage material is distributed on the free edge. In addition, the elastic shrinkage material directly adheres to the skin during the shrinkage process, which causes discomfort to the user as the user moves more during use. At the same time, in order to enable the free edge of the leak-proof partition to adhere well to the skin, the elastic shrinkage material of this structure has good shrinkage properties, so that the free edge of the leak-proof partition moves inward as the user moves more during use, resulting in poor leak-proof effect. Summary of the invention
[0004] Therefore, in view of the above problems, the present invention provides a disposable absorbent article, which mainly solves the problems of poor comfort and poor leakage-proof effect of the absorbent articles in the prior art.
[0005] To achieve the above object, the present invention adopts the following technical solutions:
[0006] A disposable absorbent article comprises an absorbent body, wherein the longitudinal direction is defined as the length direction of the absorbent body, and the transverse direction is defined as the width direction of the absorbent body. The absorbent body comprises a liquid-permeable surface layer, a liquid-impermeable bottom layer, and an absorbent core layer arranged between the liquid-permeable surface layer and the liquid-impermeable bottom layer for absorbing and retaining excrement. Leak-proof partition edges are arranged on both sides of the longitudinal direction of the absorbent body. The leak-proof partition edges comprise a connecting portion connected to the absorbent body at one end and a telescopic portion arranged at the other end of the connecting portion and functioning to shrink along the length direction of the absorbent body so that the connecting portion stands up. The end of the telescopic portion away from the connecting portion is defined as a free end, and the end close to the connecting portion is defined as a connecting end. The telescopic portion comprises a first covering layer and a second covering layer covering the outside of the first covering layer. At least two elastic shrinkable materials are arranged side by side in the longitudinal direction in the first covering layer. The longitudinal ends of the elastic shrinkable materials are respectively fixedly connected to the inner surface of the first covering layer. The outer end of the free end of the first covering layer is connected to the inner end of the free end of the second covering layer through a joint, and the connecting end of the second covering layer is connected to the connecting portion.
[0007] Furthermore, one to three rows of welding points distributed along the longitudinal direction are formed between two adjacent elastic shrinkage materials on the first covering layer by ultrasonic welding or thermal pressing.
[0008] Furthermore, the transverse width of the joint portion is 2 mm to 15 mm.
[0009] Furthermore, the transverse width of the joint is 6 mm.
[0010] Furthermore, the free end of the first covering layer is provided with a first opening along the longitudinal direction, so that the first covering layer located at the first opening forms a first upper side edge and a first lower side edge, and the free end of the second covering layer is provided with a second opening along the longitudinal direction, so that the second covering layer located at the second opening forms a second upper side edge and a second lower side edge, and the joint portion includes an upper layer and a lower layer, the two lateral ends of the upper layer are respectively connected to the first upper side edge and the second upper side edge, and the two lateral ends of the lower layer are respectively connected to the first lower side edge and the second lower side edge, and the upper layer and the lower layer are laminated and bonded.
[0011] Furthermore, a third opening is provided at the connecting end of the second covering layer in the longitudinal direction, so that the second covering layer located at the third opening forms a third upper side edge and a third lower side edge, and the connecting part includes a first part and a second part, one end of the first part is connected to the third upper side edge, one end of the second part is connected to the third lower side edge, and the first part and the second part are laminated and bonded.
[0012] By adopting the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: the disposable absorbent article improves the leak-proof partition edge so that it includes a connecting portion and a telescopic portion, and the telescopic portion includes an elastic shrink material, a first coating layer coated outside the elastic shrink material, and a second coating layer coated outside the first coating layer, and no glue is provided between the elastic shrink material and the first coating layer and between the first coating layer and the second coating layer, so that the elastic shrink material has a good shrinkage effect, thereby driving the longitudinal shrinkage of the first coating layer and the second coating layer to be in a puffy state. In actual use, the free end of the leak-proof partition edge can be well attached to the skin, and the setting of the joint portion enables the area to be attached to the skin when the elastic shrink material shrinks, thereby improving the leak-proof partition edge. The invention has a good leakage-proof effect, and at the same time, the glue-applied area is not in direct contact with the skin, so that a puffy leakage-proof partition is formed to contact the skin, thereby increasing its softness, thereby reducing the influence of a larger area adhering to the skin and improving the comfort of use. The preparation process can be put into production with minor improvements on the existing production line, thereby reducing the investment cost and improving the comfort and leakage-proofness of the leakage-proof partition. Furthermore, 1 to 3 rows of welding points distributed along the longitudinal direction are formed between two adjacent elastic shrinkable materials on the first coating layer by ultrasonic welding or hot pressing, thereby limiting the dislocation movement of the elastic shrinkable material, so that the elastic shrinkable material can shrink better in its transverse direction, with good shrinkage effect, further improving the adhesion of the leakage-proof partition to the skin, and greatly improving the comfort and leakage-proofness. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the leakproof partition in the prior art;
[0014] Figure 2 is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;
[0015] Figure 3 is a schematic diagram of a top view of the structure of the first embodiment of the present invention;
[0016] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure at the center;
[0017] Figure 5 It is a schematic diagram of a three-dimensional process structure of the first embodiment of the present invention;
[0018] Figure 6 It is a schematic diagram of the cross-sectional structure of the process of the first embodiment of the present invention;
[0019] Figure 7 It is a schematic diagram of the cross-sectional structure of the leak-proof partition in the second embodiment of the present invention. DETAILED DESCRIPTION
[0020] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.
[0021] The embodiments of the present invention are:
[0022] Embodiment 1:
[0023] refer to Figure 2 , Figure 3 and Figure 4 A disposable absorbent article, in which the disposable absorbent article in this embodiment is a diaper, includes a diaper body 100, and the longitudinal direction is defined as the longitudinal direction, and the transverse direction is defined as the width direction. The diaper body 100 includes a liquid-permeable surface layer 110, a liquid-impermeable bottom layer 120, and an absorbent core layer 130 disposed between the liquid-permeable surface layer 110 and the liquid-impermeable bottom layer 120 for absorbing and retaining excrement. The diaper body 100 includes a front waist region 10, an absorbent region 20, and a plurality of absorbent regions 130. The front waist region 10 and the back waist region 30 are provided with waist elastic bands 40 arranged side by side in the transverse direction between the absorbent core layer 130 and the liquid-impermeable bottom layer 120. The liquid-permeable surface layer 110 is a hydrophilic non-woven fabric. The absorbent core layer 130 includes a core body 131 mixed with a polymer material and pulp fibers and a non-woven fabric 132 covering the core body 131. The liquid-impermeable bottom layer 120 is a composite of a breathable PE film 121 and a hydrophobic non-woven fabric 122. The diaper body 100 is provided with a plurality of elastic bands 40 arranged side by side in the transverse direction between the absorbent core layer 130 and the liquid-impermeable bottom layer 120. There is a leakproof edge 50, the leakproof edge 50 includes two elastic bands 2 and a water-repellent non-woven fabric 1 covering the outside thereof, the water-repellent non-woven fabric 1 includes a connecting portion 510 connected to the diaper body 100 at one end and a telescopic portion 520 provided at the other end of the connecting portion 510 and shrinking along the length direction of the diaper body 100 to make the connecting portion 510 stand up, the end of the telescopic portion 520 away from the connecting portion 510 is defined as a free end k, and the end close to the connecting portion 510 is defined as a connecting end m, the telescopic portion 520 includes a first covering layer 521 and The second covering layer 522 is coated on the outside of the first covering layer 521, and the two elastic bands 2 are arranged side by side in the first covering layer 521 along the longitudinal direction. The longitudinal ends of the elastic band 2 are respectively fixedly connected to the inner surface of the first covering layer 521, and the outer end edge of the free end k of the first covering layer 521 is connected to the inner end edge of the free end k of the second covering layer 522 through the joint 530. The lateral width of the joint 530 is 2mm to 15mm, preferably 6mm, and the connecting end m of the second covering layer 522 is connected to the connecting part 510.
[0024] Of course, the connecting portion 510, the first coating layer 521, the second coating layer 522 and the joint portion 530 described above are an integrated structure.
[0025] In this embodiment, the free end k of the first coating layer 521 is provided with a first opening 3 along the longitudinal direction, so that the first coating layer 521 located at the first opening 3 forms a first upper side edge 523 and a first lower side edge 524, and the free end k of the second coating layer 522 is provided with a second opening 4 along the longitudinal direction, so that the second coating layer 522 located at the second opening 4 forms a second upper side edge 525 and a second lower side edge 526, and the joint portion 530 includes an upper layer 531 and a lower layer 532, and the lateral ends of the upper layer 531 are respectively connected to the first upper side edge 523 and the second upper side edge 525, and the lower layer 53 The two lateral ends of 2 are connected to the first lower side edge 524 and the second lower side edge 526 respectively, the upper layer 531 and the lower layer 532 are laminated and bonded, and the connecting end m of the second coating layer 522 is provided with a third opening 5 along the longitudinal direction, so that the second coating layer 522 located at the third opening 5 forms a third upper side edge 527 and a third lower side edge 528, the connecting portion 510 includes a first portion 511 and a second portion 512, one end of the first portion 511 is connected to the third upper side edge 527, one end of the second portion 512 is connected to the third lower side edge 528, and the first portion 511 and the second portion 512 are laminated and bonded.
[0026] Therefore, the water-repellent nonwoven fabric 1 in the unfolded state is composed of the first portion 511, the third upper edge 527, the second upper edge 525, the first upper edge 523, the first lower edge 524, the second lower edge 526, the third lower edge 528 and the second portion 512 in sequence.
[0027] refer to Figure 5 , Figure 6 As shown, the preparation method of the leakproof partition 50 is as follows:
[0028] 1) unwinding the processed rolled water-repellent nonwoven fabric 1, defining the longitudinal direction Y extending along the unwinding conveying direction of the water-repellent nonwoven fabric 1, and the transverse direction X extending along the width direction thereof;
[0029] 2) unwinding two rolls of processed rolled elastic bands 2 to form side-by-side conveyance, the stretching ratio of the elastic band 2 is 1.5 times, spraying glue on the elastic band 2 at intervals by a spray gun, and compounding the elastic band 2 on the water-repellent non-woven fabric 1, the composite area a is located in the transverse middle of the water-repellent non-woven fabric 1, the area compounded by spraying glue is the first gluing area b, the distance between the upper ends of two adjacent first gluing areas b in the longitudinal direction Y is the length dimension of a single leak-proof partition, the side of the water-repellent non-woven fabric 1 compounded with the elastic band 2 is defined as the front side e, and the side opposite thereto is defined as the back side f, the side of the water-repellent non-woven fabric 1 located on the transverse side of the elastic band 2 is defined as the left side area 11, and the other side of the elastic band 2 is defined as the right side area 12;
[0030] 3) Continuously spraying glue along the longitudinal direction on the left area 11 of the front side e of the water-repellent non-woven fabric 1 and near the elastic band 2 by using a spray gun, the glue spraying area is the second glue application area c, the transverse width of the second glue application area c is 2 mm to 15 mm, preferably 6 mm, and then the water-repellent non-woven fabric 1 is folded upward along the boundary between the elastic band 2 and the right area 12, and the folding line is the first folding line g, so that the left area 11 and the right area 12 of the water-repellent non-woven fabric 1 are compositely connected at the second glue application area c;
[0031] 4) folding the left side area 11 of the water-repellent nonwoven fabric 1 downward along the boundary between the left side area 11 and the second glue application area c, so that the back side f of the second glue application area c is attached to the back side f of the left side area 11, and the folding line is the second folding line h, and the second folding line h is attached to the front side e of the right side area 12;
[0032] 5) spraying glue on the area on the back side f of the left side area 11 of the water-repellent non-woven fabric 1 that is not covered by the second glue application area c by a spray gun, the glue spraying area is the third glue application area d, and then folding the right side area 12 of the water-repellent non-woven fabric 1 downward along the boundary between the right side area 12 and the second glue application area c, the folding line is the third folding line i, so that the back side f of the left side area 11 of the water-repellent non-woven fabric 1 and the back side f of the right side area 12 are compositely connected at the third glue application area d;
[0033] 6) The product of step 5 is cut along the longitudinal middle portion of the first gluing area b to form a single leak-proof partition 50 .
[0034] The first gluing area b mentioned above is where the two elastic bands 2 are fixedly connected to the inner surface of the first covering layer 521; the second gluing area c is where the upper layer 531 and the lower layer 532 are laminated and bonded; and the third gluing area d is where the first part 511 and the second part 512 are laminated and bonded.
[0035] Embodiment 2:
[0036] refer to Figure 7 As shown, the second embodiment is further improved on the basis of the first embodiment, and its technical feature that distinguishes it from the first embodiment is that a row of welding points 8 distributed along the longitudinal direction is formed by ultrasonic welding or hot pressing between two adjacent elastic bands 2 on the first coating layer 521, thereby limiting the misalignment movement of the elastic band 2, so that the elastic band 2 can shrink better in its lateral direction, and the shrinkage effect is good, further improving the adhesion of the leak-proof partition 50 to the skin, and greatly improving the comfort and leak-proofness.
[0037] The working method of the present invention is as follows: the disposable absorbent article is improved on the leakproof partition 50 so that it includes a connecting portion 510 and a telescopic portion 520, and the telescopic portion 520 includes an elastic band 2, a first covering layer 521 covering the outside of the elastic band 2, and a second covering layer 522 covering the outside of the first covering layer 521, and no glue is provided between the elastic band 2 and the first covering layer 521 and between the first covering layer 521 and the second covering layer 522, so that the elastic band 2 has a good contraction effect, thereby driving the longitudinal contraction of the first covering layer 521 and the second covering layer 522 to be in a bulky state, and in actual During use, the free end k of the leak-proof partition 50 can be well attached to the skin. In addition, the setting of the joint 530 allows this area to be attached to the skin when the elastic band 2 contracts, thereby improving the leak-proof effect of the leak-proof partition 50. At the same time, the glued area is not in direct contact with the skin, so that the leak-proof partition 50 in a puffy state is in contact with the skin, increasing its softness, thereby reducing the impact of a larger area sticking to the skin and improving the comfort of use. The preparation process can be put into production with minor improvements on the existing production line, reducing investment costs, while improving the comfort and leak-proofness of the leak-proof partition 50.
[0038] 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, comprising an absorbent body, wherein the longitudinal direction extending along the length direction of the absorbent body is defined as the longitudinal direction, and the transverse direction extending along the width direction thereof is defined as the transverse direction, wherein the absorbent body comprises a liquid-permeable surface layer, a liquid-impermeable bottom layer, and an absorbent core layer disposed between the liquid-permeable surface layer and the liquid-impermeable bottom layer for absorbing and retaining excrement, and leak-proof partition edges are disposed on both sides of the longitudinal direction of the absorbent body, characterized in that: The leak-proof partition edge comprises a connecting portion connected to the absorbent body at one end and a telescopic portion arranged at the other end of the connecting portion and shrinking along the length direction of the absorbent body to make the connecting portion stand up, and the end of the telescopic portion away from the connecting portion is defined as a free end, and the end close to the connecting portion is defined as a connecting end, and the telescopic portion comprises a first covering layer and a second covering layer covering the first covering layer, at least two elastic shrinkable materials are arranged side by side in the longitudinal direction in the first covering layer, and the longitudinal ends of the elastic shrinkable material are respectively fixedly connected to the inner surface of the first covering layer, and the outer end edge of the free end of the first covering layer is connected to the inner end edge of the free end of the second covering layer through a joint, and the transverse width dimension of the joint is 2mm to 15mm, and the connecting end of the second covering layer is connected to the connecting portion, and no glue is arranged between the elastic shrinkable material and the first covering layer and between the first covering layer and the second covering layer, so that the elastic shrinkable material has a good shrinkage effect, thereby driving the longitudinal shrinkage of the first covering layer and the second covering layer to be in a bulky state; One to three rows of welding points distributed in the longitudinal direction are formed between two adjacent elastic shrinkable materials on the first covering layer by ultrasonic welding or thermal pressing; The free end of the first covering layer is provided with a first opening along the longitudinal direction, so that the first covering layer located at the first opening forms a first upper side edge and a first lower side edge, the free end of the second covering layer is provided with a second opening along the longitudinal direction, so that the second covering layer located at the second opening forms a second upper side edge and a second lower side edge, the joint portion comprises an upper layer and a lower layer, the two lateral ends of the upper layer are respectively connected to the first upper side edge and the second upper side edge, the two lateral ends of the lower layer are respectively connected to the first lower side edge and the second lower side edge, and the upper layer and the lower layer are laminated and bonded; A third opening is provided at the connecting end of the second covering layer in the longitudinal direction, so that the second covering layer located at the third opening forms a third upper side edge and a third lower side edge, and the connecting part includes a first part and a second part, one end of the first part is connected to the third upper side edge, one end of the second part is connected to the third lower side edge, and the first part and the second part are laminated and bonded.
2. The disposable absorbent article according to claim 1, characterized in that: The transverse width dimension of the joint portion is 6 mm.