Multi-leakage-proof baby paper diaper

Abstract

The utility model belongs to the technical field of personal care, and particularly relates to a multi-leakage-proof baby paper diaper which is sequentially divided into a front waist part, a front abdomen part, a crotch part, a rear abdomen part and a rear waist part from front to back, the multi-leakage-proof baby paper diaper comprises an absorption part, a three-dimensional protective enclosure and an elastic waistline, and the absorption part comprises a surface layer close to one side of a human body; the arrangement position of the elastic waistline on the inner side of the rear waist part and / or the front waist part is changed to form a leakage-proof pocket, the position, corresponding to the leakage-proof pocket, of the absorption part can be subjected to special-shaped treatment, then a multi-channel leakage-proof structure can be formed, the static and dynamic leakage-proof effect of the multi-leakage-proof baby paper diaper is further enhanced, the probability of leakage is reduced, and the service life of the baby paper diaper is prolonged. Therefore, the leakage-proof requirements of sports and babies under different conditions can be better met. In addition, the three-dimensional enclosure is a double-layer three-dimensional enclosure formed by wrapping and folding a cloth piece, and a waterproof layer is additionally arranged in the middle of the three-dimensional enclosure, so that the blocking effect of the three-dimensional enclosure is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of personal care technology, specifically to a multi-layer leak-proof baby diaper. Background Technology

[0002] Existing baby diaper products are not effective at preventing leaks from loose stools in infants. Because loose stools are sticky, they cannot be well absorbed by the surface layer, resulting in frequent leaks that are difficult to clean. Furthermore, their dynamic leak-proof effect is poor and cannot meet the leak-proof needs of infants during exercise and in different situations. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] This utility model provides the following technical solutions to solve one or more of the above-mentioned technical problems:

[0005] A multi-layer leak-proof baby diaper includes an absorbent section, a three-dimensional guard, and an elastic waistband. The absorbent section includes a surface layer close to the body. The three-dimensional guard is located on the left and right sides of the absorbent section. The multi-layer leak-proof baby diaper is divided into a front waistband, a front abdomen, a crotch, a back abdomen, and a back waistband from front to back. An elastic waistband is provided on the inner side of the back waistband and / or the front waistband. The elastic waistband is located between the three-dimensional guard and the surface layer. The left, right, and back sides of the elastic waistband are connected to the three-dimensional guard and the surface layer. An opening is provided on the front side of the elastic waistband to form a leak-proof pocket. Through this leak-proof pocket design, the opening can open naturally when the elastic waistband contracts, which can catch the material spreading backward and / or forward, preventing back and / or front leakage.

[0006] In some embodiments, the three-dimensional protective barrier is a double-layered barrier formed by folding a piece of fabric. A waterproof layer is provided in the middle of the barrier, located at one end near the center of the absorbent portion. Adding a waterproof layer effectively enhances the barrier's ability to block viscous substances, and color printing can be performed on the added waterproof layer. Compared to direct color printing on the barrier itself, printing on the waterproof layer produces clearer and more vibrant colors, improving the overall appearance of the product.

[0007] In some implementations...

[0008] The fabric sheet is a non-woven fabric;

[0009] The waterproof layer is a waterproof film;

[0010] The three-dimensional protective enclosure is equipped with three-dimensional elastic bands, which are located on the upper layer of the waterproof layer.

[0011] In some embodiments, the layer closest to the surface layer of the three-dimensional enclosure is an inner layer. This inner layer has several holes, and an auxiliary absorbent layer is provided between the inner layer and the waterproof layer. This auxiliary absorbent layer is flush with the folded edge of the three-dimensional enclosure. The holes in the inner layer allow liquids, viscous substances, etc., to be introduced into the inside of the three-dimensional enclosure, where they are absorbed and temporarily stored by the auxiliary absorbent layer. Simultaneously, the presence of the waterproof layer prevents these substances from seeping outwards through the three-dimensional enclosure.

[0012] In some embodiments, the layer closest to the surface layer of the three-dimensional protective enclosure is an inner layer. This inner layer has several holes, and an auxiliary absorbent layer is provided between the inner layer and the waterproof layer. This auxiliary absorbent layer extends beyond the folded edge of the three-dimensional protective enclosure and wraps around the surface layer, forming a guiding layer. This structural design of the auxiliary absorbent layer allows the substances to be absorbed to be introduced into the absorption section.

[0013] In some implementations, the auxiliary absorbent layer is a high-loft nonwoven fabric.

[0014] In some embodiments, the length of the opening is greater than the distance between the left and right three-dimensional protective barriers, and the height of the opening is greater than or equal to one-third of the width of the leak-proof pocket.

[0015] In some embodiments, an adhesive area is provided on the surface layer corresponding to the leak-proof pocket. After multiple folds, the elastic waistband is connected to the three-dimensional protective barrier and the surface layer to form the leak-proof pocket. The width of the elastic waistband after folding is the same as the width of the adhesive area. The width of the flattened elastic waistband = the width of the adhesive area + the folded width * the number of folds * 2. This design can increase the opening and capacity of the leak-proof pocket within a limited space.

[0016] In some embodiments, the absorbent portion includes an extended core, with a surface layer laminated to the upper side of the extended core, and the coverage area of ​​the leak-proof pocket corresponds to the position of the extended core.

[0017] In some embodiments, the tail and / or front end of the extended core are provided with irregularly shaped areas. These areas are U-shaped or V-shaped structures without a core in the center. The position of these irregularly shaped areas corresponds to the position of the leak-proof pocket. When the leak-proof pocket contracts, it causes the irregularly shaped areas to contract as well. Because the center of the irregularly shaped areas lacks core support, its contraction is greater than that of its left and right sides, thus forming a V-shaped pit in the center where there is no core. This pit, combined with the leak-proof pocket, forms a double-pocket leak-proof structure. This design can further enhance the effect of preventing rear and / or front leaks. Simultaneous use of leak-proof pockets and irregularly shaped designs on both the front and rear sides can create a 540° leak-proof effect.

[0018] Compared with the prior art, the beneficial effects of this utility model are: it can effectively enhance the static and dynamic leak-proof effect on viscous substances such as loose stools, reduce the probability of leakage, and better meet the leak-proof needs of infants in different situations such as movement. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 These are product unfolded plan views in some embodiments of this utility model;

[0021] Figure 2 This is a longitudinal cross-sectional view of the waterproof membrane product added in Example 1;

[0022] Figure 3 This is a schematic diagram of the waterproof film offline composite protective nonwoven fabric in Example 1;

[0023] Figure 4 This is a schematic diagram of the loosening path after adding a waterproof film, a single high-loft nonwoven fabric, and perforated protective nonwoven fabric in Example 2;

[0024] Figure 5 This is a longitudinal cross-sectional view of the single-layer high-loft nonwoven fabric product with added waterproof film in Example 2;

[0025] Figure 6 yes Figure 5 Enlarged view of section A;

[0026] Figure 7 This is a schematic diagram of the waterproof film and high-loft nonwoven fabric offline composite protective nonwoven fabric in Example 2;

[0027] Figure 8This is a longitudinal cross-sectional view of the product with added waterproof film and double-layer high-loft nonwoven fabric in Example 3;

[0028] Figure 9 yes Figure 8 Enlarged view of section B;

[0029] Figure 10 This is a schematic diagram of the waterproof film and double-layer high-loft nonwoven fabric offline composite protective nonwoven fabric in Example 3;

[0030] Figure 11 This is a schematic diagram of the loosening path after adding a waterproof film, double-layer high-loft non-woven fabric, and perforated protective non-woven fabric in Example 3;

[0031] Figure 12 This is a longitudinal cross-sectional view of the product with an added anti-leak pocket at the lower back in Example 4;

[0032] Figure 13 This is a cross-sectional view of the product with an added anti-leak pocket at the lower back in Example 4;

[0033] Figure 14 This is a schematic diagram of the adhesive application to the back waist anti-leak pocket in Example 4;

[0034] Figure 15 This is a schematic diagram of the opening of the leak-proof pocket in some embodiments of this utility model;

[0035] Figure 16 This is a schematic diagram of the leak-proof pocket folding in Example 5;

[0036] Figure 17 This is a schematic diagram showing the unfolded effect of the leak-proof pocket in Example 5;

[0037] Figure 18 yes Figure 16 Schematic diagram of the cross-sectional structure of the middle CC section;

[0038] Figure 19 This is a schematic diagram of the product unfolded in Example 6, which features an added leak-proof pocket at the lower back and an irregularly shaped design.

[0039] Figure 20 This is a schematic diagram of the path of loose stool in some embodiments of this utility model, where a leak-proof pocket is added to the back waist.

[0040] Figure 21 This is a schematic diagram of the path of loose stool in some embodiments of this utility model, where a leak-proof pocket is added to the back waist and a product with irregular shape processing is used.

[0041] Figure 22 This is a schematic diagram of the product unfolded in some embodiments of this utility model, where both the rear waist and front waist have added leak-proof pockets and an irregular shape.

[0042] Figure 23 This is a schematic diagram of the path of loose stools in some embodiments of this utility model, where both the back waist and front waist have anti-leak pockets and the product has an irregular shape. Detailed Implementation

[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0047] The arrows in the attached diagram all indicate convenient paths.

[0048] Example 1

[0049] Combination Figures 1 to 3 As shown in the embodiment, this invention proposes a multi-layer leak-proof baby diaper, including an absorbent section and a three-dimensional protective barrier. The absorbent section includes a surface layer 6 near the body and a core 7 composited below the surface layer. The three-dimensional protective barrier is a double-layered three-dimensional barrier 2 formed by folding a fabric sheet 1, with a waterproof layer 3 in the middle of the three-dimensional protective barrier. Patterns can be printed on the waterproof layer 3.

[0050] The aforementioned three-dimensional protective enclosure may include two parts located on the left and right sides of the absorption section, and these two parts may be set independently of each other.

[0051] The aforementioned fabric piece 1 can be non-woven fabric, commonly spunbond non-woven fabric. Spunbond non-woven fabric has a strong blocking effect on urine, but its blocking effect on loose stool, which has strong penetrating power and is viscous, is poor. Furthermore, urine can be absorbed downwards through the surface layer 6 and guided into the core 7, and will not remain on the surface for too long. Loose stool, due to its viscous state, is difficult to be absorbed by the core 7 through the surface layer 6. Therefore, by adding a waterproof layer 3, a further blocking effect is formed.

[0052] The aforementioned waterproof layer 3 can be a waterproof film, and the waterproof layer 3 is disposed on one end near the center of the absorbent part.

[0053] The aforementioned three-dimensional protective enclosure is provided with a three-dimensional elastic band 9, and preferably the three-dimensional elastic band 9 is set on the upper layer of the waterproof layer 3.

[0054] The aforementioned multi-layer leak-proof baby diaper is divided into a front waist, front abdomen, crotch, back abdomen, and back waist from front to back. The front and back waists are equipped with elastic waistbands 15, and a bottom non-woven fabric 16 can be laminated below the core 7 in the absorbent section. In conventional processes, the elastic waistband 15 is laminated between the surface layer 6 and the bottom non-woven fabric 16.

[0055] The aforementioned surface layer 6 can be formed by bonding the upper surface nonwoven fabric 5 and the lower surface nonwoven fabric 4 together through an ultrasonic process or a hot-pressing process, either online or offline. The width of the upper surface nonwoven fabric 5 can be less than or equal to the width of the lower surface nonwoven fabric 4.

[0056] The waterproof membrane 3 can be laminated with the fabric sheet 1 either online or offline. When laminated offline, such as... Figure 3 As shown, the waterproof film 3 is located in the middle of the width of the fabric piece 1. The fabric piece 1 is folded along the fold line Z1. In this way, it is only necessary to cut it along the center line Y1 on the machine to form the three-dimensional protective non-woven fabric material on the left and right sides.

[0057] Example 2

[0058] Combination Figures 4 to 7 As shown in the embodiment, this invention proposes a multi-layer leak-proof baby diaper, including the structure described in Embodiment 1. The inner layer is located near the surface of the three-dimensional protective barrier, while the outer layer is the outer layer. The inner layer has several holes 13. An auxiliary absorbent layer 8 is provided between the inner layer and the waterproof layer, and the auxiliary absorbent layer 8 is flush with the folded edge 11 of the three-dimensional protective barrier. The auxiliary absorbent layer 8 can be made of high-loft nonwoven fabric. When the baby has loose stools, the stool 14 can enter the center of the three-dimensional protective barrier 2 through the holes 13. The auxiliary absorbent layer 8, made of high-loft nonwoven fabric, has large gaps that temporarily store the stool within the fabric. Furthermore, the presence of the waterproof layer 3 prevents the stool from seeping outwards. This minimizes the baby's contact with the stool.

[0059] Waterproof layer 3 and auxiliary absorbent layer 8 can be laminated with the three-dimensional enclosure either online or offline. When laminated offline, such as... Figure 7 As shown, the auxiliary absorbent layer 8 is located in the middle of the width of the three-dimensional protective enclosure, and the waterproof layer 3 is located on both sides of the auxiliary absorbent layer 8. The fabric piece 1 is folded along the folding line Z2. In this way, it is only necessary to cut along the center line Y2 on the machine. After wrapping, a structural layer can be formed from the surface layer 6 upwards, which in turn forms the inner layer, the auxiliary absorbent layer 8, the waterproof layer 3, and the outer layer.

[0060] Example 3

[0061] Combination Figures 8 to 11 As shown in the embodiment, this invention proposes a multi-layer leak-proof baby diaper, including the structure described in Embodiment 1. The three-dimensional protective layer has an inner layer near the surface layer and an outer layer. The inner layer has several holes 13. An auxiliary absorbent layer 8 is provided between the inner layer and the waterproof layer. The auxiliary absorbent layer 8 extends beyond the folded edge 11 of the three-dimensional protective layer and wraps under the surface layer 6, forming a guide layer 12. The auxiliary absorbent layer 8, made of high-loft nonwoven fabric, has large pores that temporarily store loose stools within the fabric. Furthermore, the presence of the waterproof layer 3 prevents loose stools from seeping outwards. This minimizes the baby's contact with loose stools, while the design of the lowered auxiliary absorbent layer 8 guides the loose stools 14 into the core 7.

[0062] Waterproof layer 3 and auxiliary absorbent layer 8 can be laminated with the three-dimensional enclosure either online or offline. When laminated offline, such as... Figure 10 As shown, the auxiliary absorbent layer 8 is located in the middle of the width of the three-dimensional protective enclosure, and the waterproof layer 3 is located on both sides of the auxiliary absorbent layer 8, i.e., at the folded edges 11 of the three-dimensional protective enclosure. The fabric piece 1 is folded along the fold line Z3. In this way, it only needs to be cut along the center line Y3 on the machine. After folding, a double-layer auxiliary absorbent layer structure is formed, consisting of an inner layer, an auxiliary absorbent layer 8, an auxiliary absorbent layer 8, a waterproof layer 3, and an outer layer, from the surface layer 6 upwards. Subsequently, after being online composited with the surface layer 6, the extended auxiliary absorbent layer 8 is folded under the surface layer 6 to form the guide layer 12.

[0063] Example 4

[0064] Combination Figure 1 , Figures 12 to 15 as well as Figure 20 As shown, this embodiment proposes a multi-layer leak-proof baby diaper, including the structure described in Embodiment 2 (the structure described in Embodiment 1 or Embodiment 3 can also be used here). The position of the elastic waistband 15 at the back waist of the multi-layer leak-proof baby diaper is changed, and the elastic waistband 15 is positioned between the three-dimensional protective barrier and the surface layer 6. The left, right, and back sides of the elastic waistband 15 are compositely connected to the three-dimensional protective barrier and the surface layer 6. An opening is left on the front side of the elastic waistband 15 (i.e., the front side of the elastic waistband 15 is not compositely connected to the surface layer 6; a composite connection can be formed by applying adhesive during bonding; the adhesive area and the opening area can be as follows). Figure 14 As shown in S1 and S2 in the diagram, a leak-proof pocket 15-1 is formed. The length L of the opening is greater than the distance L1 between the left and right three-dimensional protective barriers, and the height H1 of the opening is greater than or equal to one-third of the width H of the leak-proof pocket.

[0065] like Figure 15As shown, when the elastic waistband 15 contracts, the opening naturally opens, forming a leak-proof pocket 15-1. When loose stools spread backward, the leak-proof pocket 15-1 can stop them from leaking backward.

[0066] like Figure 20 As shown, after adding the leak-proof pocket 15-1, the loose stool will be blocked by the rear leak pocket, thus returning to the lowest point of the product.

[0067] Example 5

[0068] On surface layer 6, an adhesive area is provided corresponding to the leak-proof pocket, combined with... Figures 16 to 18 The content shown is an example of increasing the width of the leak-proof pocket 15-1 described in Example 4, and folding it multiple times along fold line i. The width of the elastic waistband after folding is consistent with the width L3 of the adhesive area. The width L4 of the flattened elastic waistband is equal to the width L3 of the adhesive area + the fold width L5 * the number of folds * 2. Figure 18 As shown, a multi-Z shape is formed, and then the two ends of the leak-proof pocket 15-1 can be fixed by heat sealing or ultrasonic sealing, which can increase the opening and capacity of the leak-proof pocket in a limited space.

[0069] Example 6

[0070] Combination Figure 19 and Figure 21 As shown in the figure, this embodiment proposes a multi-layer leak-proof baby diaper, including the structure described in embodiment four or five, with the core 7 modified to... Figure 19 The extended core shown corresponds to the position of the leak-proof pocket 15-1 in the coverage area. The tail of the core 7 is irregularly shaped to form a U-shaped or V-shaped structure with cores on both sides and no core in the middle. The position of the irregularly shaped area corresponds to the position of the leak-proof pocket. When the leak-proof pocket shrinks, it causes the irregularly shaped area to shrink as well. Since there is no core support in the middle of the irregularly shaped area, its shrinkage degree is higher than that on the left and right sides, thus forming a V-shaped pit in the middle where there is no core. This pit, together with the leak-proof pocket, forms a double-pocket leak-proof structure.

[0071] like Figure 21 As shown, with the addition of the anti-leakage pocket and the V-shaped core, when the amount of loose stool is large, it will first be blocked by the V-shaped pit 17 created by the contraction of the V-shaped core, and then enter the anti-leakage pocket 15-1 at the back waist for the second blocking.

[0072] The front waistband of the multi-layer leak-proof baby diaper described in this utility model can also be designed directly with the back waistband, corresponding to the front leak-proof pocket and / or with a special shape at the front end of the extended core. Simultaneously, by designing the leak-proof pocket at both the front and back waistbands and making the special shape of the extended core, a diaper like this can be formed. Figure 22 The product shown can serve the following functions: Figure 23 The leak-proof effect is shown at 540°.

[0073] The aforementioned undisclosed matters can be directly implemented using existing technologies, so they will not be elaborated upon here.

[0074] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-layer leak-proof baby diaper, comprising an absorbent section, three-dimensional guards, and an elastic waistband, wherein the absorbent section includes a surface layer close to the body, characterized in that, The three-dimensional protective barrier is set on the left and right sides of the absorbent part. The multi-layer leak-proof baby diaper is divided into front waist, front abdomen, crotch, back abdomen and back waist from front to back. The inner side of the back waist and / or front waist is provided with an elastic waistband. The elastic waistband is set between the three-dimensional protective barrier and the surface layer. The left, right and back sides of the elastic waistband are connected to the three-dimensional protective barrier and the surface layer. An opening is left on the front side of the elastic waistband to form a leak-proof pocket.

2. The multi-layer leak-proof baby diaper according to claim 1, characterized in that, The three-dimensional protective enclosure is a double-layered three-dimensional protective enclosure formed by folding a piece of fabric. A waterproof layer is provided in the middle of the three-dimensional protective enclosure, and the waterproof layer is located at one end near the center of the absorbent part.

3. The multi-layer leak-proof baby diaper according to claim 2, characterized in that, The fabric sheet is a non-woven fabric; The waterproof layer is a waterproof film; The three-dimensional protective enclosure is equipped with three-dimensional elastic bands, which are located on the upper layer of the waterproof layer.

4. The multi-layer leak-proof baby diaper according to claim 3, characterized in that, The inner layer of the three-dimensional enclosure is the layer closest to the surface layer. Several holes are opened in the inner layer. An auxiliary absorbent layer is provided between the inner layer and the waterproof layer. The auxiliary absorbent layer is flush with the folded edge of the three-dimensional enclosure.

5. A multi-layer leak-proof baby diaper according to claim 3, characterized in that, The inner layer of the three-dimensional enclosure is the layer closest to the surface layer. Several holes are opened in the inner layer. An auxiliary absorbent layer is provided between the inner layer and the waterproof layer. The auxiliary absorbent layer extends beyond the folded edge of the three-dimensional enclosure and wraps down to the bottom of the surface layer to form a guide layer.

6. A multi-layer leak-proof baby diaper according to claim 4 or 5, characterized in that, The auxiliary absorbent layer is made of high-loft nonwoven fabric.

7. A multi-layer leak-proof baby diaper according to claim 1, characterized in that, The length of the opening is greater than the distance between the left and right three-dimensional protective barriers, and the height of the opening is greater than or equal to one-third of the width of the leak-proof pocket.

8. A multi-layer leak-proof baby diaper according to claim 1, characterized in that, An adhesive area is provided on the surface layer corresponding to the leak-proof pocket. After the elastic waistband is folded multiple times, it is connected to the three-dimensional protective wall and the surface layer to form a leak-proof pocket. After folding, the width of the elastic waistband is the same as the width of the adhesive area. The width of the flattened elastic waistband = the width of the adhesive area + the folded width * the number of folds * 2.

9. A multi-layer leak-proof baby diaper according to claim 1, characterized in that, The absorbent part includes an extended core, and a surface layer is laminated to the upper side of the extended core. The coverage area of ​​the leak-proof pocket corresponds to the position of the extended core.

10. A multi-layer leak-proof baby diaper according to claim 9, characterized in that, The extended core has an irregularly shaped processing area at its tail and / or front. The irregularly shaped processing area has a U-shaped or V-shaped structure without a core in the middle. The position of the irregularly shaped processing area corresponds to the position of the leak-proof pocket. When the leak-proof pocket shrinks, it causes the irregularly shaped processing area to shrink. Since there is no core in the middle of the irregularly shaped processing area, its shrinkage degree is higher than that on its left and right sides, thus forming a V-shaped pit at the position without a core in the middle. This pit, combined with the leak-proof pocket, forms a double-pocket leak-proof structure.

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