Composite paper diaper

Abstract

The utility model relates to the technical field of paper diapers, in particular to a composite paper diaper which comprises a paper diaper main body, a water absorption core body is arranged on the paper diaper main body, and the water absorption core body is composed of a bottom film, a first core body layer, a second core body layer, a third core body layer, water soluble threads, elastic threads and the like. A common integrated water absorption core body is divided into the first core body layer, the second core body layer and the third core body layer, and after the first core body layer and the second core body layer located above the water absorption core body fully absorb urine, the second core body layer moves, so that the urine can directly make contact with the third core body layer; urine can be in contact with the third core body layer without passing through the first core body layer which is imbibed, so that the urine absorption speed of the paper diaper can be increased.

Description

Technical Field

[0001] The utility model relates to the field of diapers, in particular to a composite diaper. Background Art

[0002] Diapers are common disposable sanitary products for infants and young children. They are composed of a waterproof bottom layer and a water-absorbing core. The water absorption rate is an important indicator for evaluating the performance of diapers.

[0003] If the core has a poor water absorption rate, urine cannot be quickly absorbed, and urine will flow on the surface of the core, which is prone to leakage. Diapers with fast absorption rates can reduce the time urine contacts the skin, keeping the surface of the diaper dry, thereby reducing the probability of the baby suffering from diaper rash. At the same time, diapers with fast absorption rates can also reduce urine leakage. The purpose of the utility model is to improve the structure of diapers and provide a diaper structure with high water absorption rate. Utility Model Content

[0004] The purpose of the utility model is to provide a composite diaper to solve the problems mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a diaper main body, on which a water-absorbent core is arranged, the water-absorbent core includes a bottom film, a first core layer, a second core layer, a third core layer, a water-soluble thread and an elastic thread, the bottom film is connected to the skin contact surface of the diaper main body, the first core layer, the second core layer and the third core layer are arranged on the bottom film in sequence, the first core layer and the third core layer are connected to the bottom film, the second core layer can move between the first core layer and the third core layer, the first core layer and the second core layer are respectively provided with a first slit and a second slit for urine to pass through, the water-soluble thread sews the second core layer and the third core layer, one end of the elastic thread is connected to the second core layer, and the other end is connected to the third core layer.

[0006] To optimize the above technical solution, further measures are taken: the side of the bottom film extends upward to connect with the first core layer and the second core layer, the bottom film connects the first core layer and the second core layer, and prevents urine from flowing out from between the first core layer and the second core layer.

[0007] As a further improvement to the above technical solution: there is a gap between the outer side of the second core layer and the bottom film, and the gap is used to accommodate the second core layer that is pulled by the elastic line to move.

[0008] Preferably, the width of the first gap is smaller than that of the second gap. The first gap and the second gap can block urine and prolong the contact time between urine and the absorbent core. The distribution structure of narrow top and wide bottom helps the second gap to accommodate urine while urine is not easy to flow back from the first gap, thereby avoiding urine leakage.

[0009] In order to optimize the above technical solution, further measures are taken: after the water-soluble thread dissolves, the position of the first gap matches the position of the second gap, which helps the urine in contact with the first core layer to pass through the first gap and the second gap directly into the third core layer and be absorbed by the third core layer, which helps to improve the absorption efficiency of urine.

[0010] As a further improvement to the above technical solution: the position of the first slit where the water-soluble thread is not dissolved is staggered with the position of the second slit, which helps the first core layer and the second core layer to fully absorb urine.

[0011] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0012] The utility model provides a composite diaper, in which a water-absorbent core is divided into a first core layer, a second core layer and a third core layer. When the first core layer and the second core layer located above the water-absorbent core fully absorb urine, the second core layer moves so that the urine can directly contact the third core layer. The urine does not need to pass through the swollen first core layer and the second core layer to contact the third core layer, which helps to improve the urine absorption speed of the diaper. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the partial cross-section structure of the utility model;

[0016] In the figure: diaper body - 1, absorbent core - 2, bottom film - 201, first core layer - 202, second core layer - 203, third core layer - 204, water-soluble thread - 205, elastic thread - 206, first slit - 207, second slit - 208, gap - 209. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example

[0019] See also Figure 1-2 The utility model provides a composite diaper, including a diaper body 1, on which a water-absorbing core 2 is arranged, the water-absorbing core 2 including a bottom film 201, a first core layer 202, a second core layer 203, a third core layer 204, a water-soluble thread 205 and an elastic thread 206, the bottom film 201 is connected to the skin contact surface of the diaper body 1, the first core layer 202, the second core layer 203 and the third core layer 204 are arranged on the bottom film 201 in sequence, the side of the bottom film 201 extends upward and is connected to the first core layer 202 and the second core layer 203, there is a gap 209 between the outer side of the second core layer 203 and the bottom film 201, the second core layer 203 is connected to the skin contact surface of the bottom film 201, and the second core layer 203 is connected to the skin contact surface of the bottom film 201. 203 can move between the first core layer 202 and the third core layer 204. The first core layer 202 and the second core layer 203 are respectively provided with a first slit 207 and a second slit 208 for urine to pass through. The width of the first slit 207 is smaller than the width of the second slit 208. The water-soluble thread 205 sews the second core layer 203 and the third core layer 204. After the water-soluble thread 205 is dissolved, the position of the first slit 207 matches the position of the second slit 208. When the water-soluble thread 205 is not dissolved, the position of the first slit 207 is staggered with the position of the second slit 208. One end of the elastic thread 206 is connected to the second core layer 203, and the other end is connected to the third core layer 204.

[0020] The water-soluble thread 205 refers to a linear component made of a water-soluble material, and the elastic thread 206 refers to a linear component made of an elastic material. The specific water-soluble material and elastic material used are neither the technical content to be protected by the applicant nor the necessary technical features, so no further explanation will be given.

[0021] Working principle: After the human body discharges urine, the urine will first contact with the first core layer 202 on the water-absorbing core 2 and be partially absorbed. During the process, the urine can contact with the second core layer 203 through the first slit 207 on the first core layer 202 and be absorbed by the second core layer 203. During the process, the water-soluble thread 205 will gradually dissolve. After the water-soluble thread 205 dissolves, the water-soluble thread 205 no longer connects the second core layer 203 and the third core layer 204. At this time, under the action of the elastic thread 206, the second core layer 203 will move to the gap 209 and the first slit 207 will be aligned with the second slit 208. The urine can directly contact the third core layer 204 through the first slit 207 and the second slit 208. The urine can contact and be absorbed by the third core layer 204 without passing through the first core layer 202 and the second core layer 203 that have fully absorbed the urine, which helps to improve the absorption speed of urine by the water-absorbing core 2.

[0022] When the second core layer 203 moves into the gap 209 under the action of the elastic line 206, the middle part of the first core layer 202 lacks the support of the second core layer 203 and will be concave, forming a strip-shaped groove to prevent the water-absorbent core 2 from expanding in volume after absorbing urine and causing the crotch to cover, thereby improving the air permeability and heat dissipation of the expanded water-absorbent core 2.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite diaper, comprising a diaper body (1), on which a water-absorbing core (2) is arranged, characterized in that: The water-absorbing core (2) comprises a base film (201), a first core layer (202), a second core layer (203), a third core layer (204), a water-soluble thread (205) and an elastic thread (206); The bottom film (201) is connected to the skin contact surface of the diaper body (1); the first core layer (202), the second core layer (203) and the third core layer (204) are arranged on the bottom film (201) in sequence; the first core layer (202) and the third core layer (204) are connected to the bottom film (201); the second core layer (203) can move between the first core layer (202) and the third core layer (204); the first core layer (202) and the second core layer (203) are respectively provided with a first slit (207) and a second slit (208) for urine to pass through; The water-soluble thread (205) sews the second core layer (203) and the third core layer (204) together; One end of the elastic line (206) is connected to the second core layer (203), and the other end is connected to the third core layer (204).

2. A composite diaper according to claim 1, characterized in that: The side surface of the bottom film (201) extends upward and is connected to the first core layer (202) and the second core layer (203).

3. A composite diaper according to claim 1, characterized in that: There is a gap (209) between the outer side of the second core layer (203) and the bottom film (201).

4. A composite diaper according to claim 1, characterized in that: The width of the first slit (207) is smaller than the width of the second slit (208).

5. A composite diaper according to any one of claims 1 to 4, characterized in that: After the water-soluble thread (205) is dissolved, the position of the first slit (207) matches the position of the second slit (208).

6. A composite diaper according to any one of claims 1 to 4, characterized in that: The water-soluble thread (205) is not dissolved, and the position of the first slit (207) is offset from the position of the second slit (208).

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