Absorption core and leakage-proof paper diaper

Abstract

The utility model provides an absorption core and a leakage-proof paper diaper. The absorption core comprises wrapping cloth internally provided with a containing cavity. The fluffy cloth is arranged in the containing cavity, macromolecule layers are attached to the fluffy cloth, and a flow guide channel is formed in the macromolecule layer on at least one side in the length direction; the reinforcing layer comprises upper covering cloth and lower covering cloth which are arranged in the containing cavity and connected with the fluffy cloth. The edge moisture absorption sheet is arranged above the fluffy cloth and comprises a plurality of strip-shaped water absorption sheets which are distributed at intervals, and the gaps correspond to the flow guide channels; the end moisture absorption pieces are arranged on the two sides of the absorption core and arranged above the wrapping cloth to form a slope corresponding to the flow guide channel so that liquid can be guided to flow, the liquid can be concentrated in the middle of the absorption core and can rapidly flow downwards along the flow guide channel, and therefore the liquid can be absorbed more rapidly and better. After the absorption core is applied to the leakage-proof paper diaper, the leakage-proof paper diaper can have the effect of the absorption core, and the leakage-proof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary products, in particular to an absorbent core and a leak-proof diaper. Background Art

[0002] Diapers are commonly used care products for infants and adults who cannot take care of themselves, and are used to absorb urine and other excreta. The absorbent core is an important component of diapers, which is mainly used to absorb liquid excreta such as urine.

[0003] The absorbent cores currently in use include the first generation mixed absorbent cores made of fluff pulp / water-absorbent resin particles and the second generation multi-layer composite absorbent cores. The first generation mixed absorbent cores are prone to displacement, lumping, and faults during use. In order to overcome the defects in the prior art, the second generation multi-layer composite absorbent cores have been developed in this technical field. At present, the absorbent cores of sanitary products in the domestic market are mainly five-layer composite cores, but the second generation multi-layer composite absorbent cores also have major disadvantages during use. For example, due to the high polymer content in the composite core, the second generation multi-layer composite absorbent cores are prone to liquid blockage and poor penetration during use. The expansion of the liquid absorbed by the object is squeezed by the legs, and the liquid that is not completely locked inside the absorbent core of the object will be squeezed outward and leaked at both ends, which will produce a bad experience for consumers and even cause damage to the consumer's skin in severe cases.

[0004] Therefore, it is very necessary to develop a product that can meet the wishes of consumers, that is, a product with large absorption capacity and no leakage. Utility Model Content

[0005] In view of the existing deficiencies, the purpose of the present utility model is to provide an absorbent core and a leak-proof diaper to solve one or more of the above-mentioned technical problems.

[0006] On the one hand, the utility model provides an absorbent core, including a covering cloth, a fluffy cloth, a reinforcing layer and a side moisture-absorbing sheet.

[0007] A containing cavity is provided inside the covering cloth;

[0008] The fluffy cloth is arranged in the accommodating cavity, and polymer particles are attached to the fluffy cloth to form a polymer layer on the upper side and / or the lower side of the fluffy cloth, and a guide channel arranged along the length direction is provided on the polymer layer on at least one side;

[0009] The reinforcement layer includes an upper covering cloth and a lower covering cloth which are arranged in the accommodating cavity and connected to the fluffy cloth;

[0010] The edge moisture absorbent sheet is arranged above the fluffy cloth, and is composed of at least two strip-shaped water-absorbent sheets distributed at intervals, and there is a gap between adjacent water-absorbent sheets, and the gap is arranged corresponding to the guide channel.

[0011] In some specific embodiments,

[0012] The covering cloth comprises a covering cloth bottom, a covering cloth side and a covering cloth top which are connected as one body, so as to form a receiving cavity inside the covering cloth;

[0013] The absorbent core further comprises end hygroscopic sheets, which are arranged at both ends of the absorbent core and above the covering cloth, wherein the position of the end hygroscopic sheets corresponds to the position of the side hygroscopic sheets, and the position of the end hygroscopic sheets corresponds to the position of both ends of the guide channel, and the side hygroscopic sheets and the end hygroscopic sheets form a slope bank with four sides closed on the upper part of the covering cloth;

[0014] The accommodating cavity is a fully enclosed structure or a semi-enclosed structure.

[0015] In some specific embodiments,

[0016] The polymer particles penetrate the fluffy cloth, the upper and lower sides of the fluffy cloth are both provided with polymer layers, and the upper polymer layer is provided with a flow guide channel arranged along the length direction;

[0017] There is no polymer in the flow guiding channel.

[0018] In some specific embodiments,

[0019] The polymer layer on the lower side is provided with a flow guide channel arranged along the length direction;

[0020] The width of the diversion channel is greater than 0 mm and less than or equal to 30 mm;

[0021] The fluffy cloth has a surface density of 40-60 g / ㎡.

[0022] In some specific embodiments, the width of the diversion channel is 10-30 mm.

[0023] In some specific embodiments,

[0024] The covering fabric is a hydrophilic non-woven fabric or a spunlace non-woven fabric, and the surface density of the covering fabric is 10-30 g / ㎡;

[0025] The reinforcing layer is a hydrophilic spunbond nonwoven fabric or a spunlace nonwoven fabric, and the surface density of the fabric used in the reinforcing layer is 10-30 g / ㎡.

[0026] In some specific embodiments,

[0027] The width of the gap is 10-50 mm;

[0028] The edge of the water-absorbent sheet is straight or curved;

[0029] The side absorbent sheet and the end absorbent sheet are made of the same material;

[0030] The edge moisture absorbent sheet is one of composite absorbent paper, dust-free paper, and flow-guiding non-woven fabric with a composite polymer in the middle of the upper and lower toilet papers. The surface density of the material used in the edge moisture absorbent sheet is 30-70g / ㎡.

[0031] In some specific embodiments,

[0032] The edge absorbent sheet is composed of two strip-shaped absorbent sheets distributed at intervals, the inner sides of the two absorbent sheets are curved and the inner sides of the two absorbent sheets are symmetrical about the longitudinal center of the absorbent core;

[0033] The width of the gap is greater than or equal to the width of the guide channel.

[0034] On the other hand, the utility model provides a leak-proof diaper, which includes the above-mentioned absorbent core.

[0035] In some specific embodiments, a diaper body is further included, wherein the diaper body includes a surface layer and a bottom layer, and the absorbent core is filled between the surface layer and the bottom layer.

[0036] Beneficial Effects

[0037] The absorbent core described in the utility model uses a sloped bank structure formed by side absorbent sheets and end absorbent sheets to block the liquid from scattering, so that it is concentrated in the middle of the absorbent core, and combined with the design of the guide channel, the absorbent core improves the absorption effect of the liquid, solving the problem of leakage on both sides and front and back caused by the lack of timely absorption of the absorbent core when the diaper begins to receive the continuously released liquid. The leak-proof diaper formed by the absorbent core described in the utility model can effectively guide most of the liquid to flow downward from the guide channel so that the liquid can be absorbed faster and better, effectively reducing the probability of leakage on both sides or front and back of the leak-proof diaper. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of a plane unfolding of a leak-proof diaper in some embodiments of the present invention;

[0039] Figure 2 is a schematic cross-sectional view of the absorbent core described in Example 1;

[0040] Figure 3 It is a schematic diagram of the upper plane of the absorbent core described in Example 1;

[0041] Figure 4is a schematic cross-sectional view of the absorbent core described in Example 2;

[0042] Figure 5 is a schematic cross-sectional view of the absorbent core described in Example 3;

[0043] Figure 6 This is a schematic cross-sectional view of the absorbent core described in Example 4. DETAILED DESCRIPTION

[0044] Figure 1 X represents the horizontal and width direction; Y represents the vertical and length direction.

[0045] Example 1

[0046] Combination Figures 1 to 3 As shown in the figure, the absorbent core 1 disclosed in this embodiment includes a covering cloth 40, a fluffy cloth 50, a reinforcing layer 60, a side absorbent sheet 70 and an end absorbent sheet 80.

[0047] The covering cloth 40 includes a covering cloth bottom 401, a covering cloth side 402 and a covering cloth upper part 403 which are connected as one body, and a receiving cavity 404 is formed inside the covering cloth by arranging the covering cloth bottom 401, the covering cloth side 402 and the covering cloth upper part 403;

[0048] The fluffy cloth 50 is arranged in the accommodating cavity 404, and polymer particles are attached to the fluffy cloth 50 to form a first polymer layer 50a attached to the upper end surface of the fluffy cloth 50 at least on the upper side of the fluffy cloth 50, and a first guide channel 50c without polymer arranged along the length direction is left on the first polymer layer 50a, and the width L1 of the first guide channel 50c is 10-30 mm;

[0049] The reinforcing layer 60 includes an upper covering cloth 602 and a lower covering cloth 601 which are disposed in the accommodating cavity 404 and connected to the fluffy cloth 50;

[0050] The edge moisture absorbent sheet 70 is arranged in the accommodating cavity 404 and is located between the fluffy cloth 50 and the upper part 403 of the covering cloth. The edge moisture absorbent sheet 70 is composed of at least two strip-shaped water-absorbent sheets distributed at intervals, and a gap 701 is provided between adjacent water-absorbent sheets to facilitate liquid diversion, and the gap 701 is arranged corresponding to the first diversion channel 50c, and the width L2 of the gap 701 is 10-50 mm;

[0051] The end hygroscopic sheets 80 are arranged at the two side ends of the absorbent core 1 and at the outer side of the upper part 403 of the covering cloth. The position of the end hygroscopic sheets corresponds to the position of the side hygroscopic sheets 70. The position of the end hygroscopic sheets 80 corresponds to the position of the two side ends of the first guide channel 50c, so as to achieve the purpose of forming a slope embankment with closed sides on the upper part 403 of the covering cloth by the side hygroscopic sheets 70 and the end hygroscopic sheets 80. Such a design gathers the liquid in the middle of the absorbent core like a wall.

[0052] The wrapping method adopted by the above-mentioned covering cloth 40 can effectively prevent the polymer particles from leaking out. The upper part 403 of the covering cloth is overlapped to form a fully enclosed accommodating cavity 404, wherein the covering cloth 40 can be a hydrophilic non-woven fabric or a spunlace non-woven fabric, and the surface density of the fabric used by the covering cloth 40 can be 10-30g / ㎡;

[0053] The surface density of the fluffy cloth 50 may be 40-60 g / ㎡.

[0054] In some specific embodiments, the polymer particles penetrate the fluffy cloth 50 to form a second polymer layer 50 b attached to the lower end surface of the fluffy cloth 50 on the lower side of the fluffy cloth 50 , and the second polymer layer 50 b spreads over the width of the fluffy cloth 50 .

[0055] The reinforcing layer 60 may be a hydrophilic spunbonded nonwoven fabric or a spunlace nonwoven fabric, and the surface density of the fabric used for the reinforcing layer 60 may be 10-30 g / ㎡.

[0056] The edges of the water-absorbent sheet may be straight or curved.

[0057] The side absorbent sheets 70 and the end absorbent sheets 80 may be made of the same material.

[0058] The above-mentioned edge moisture-absorbing sheet 70 can be one of composite absorbent paper, dust-free paper, and diversion non-woven fabric with a composite polymer in the middle of the upper and lower toilet papers. The surface density of the material used in the absorbent sheet can be 30-70g / ㎡.

[0059] In some specific implementations, the edge absorbent sheet 70 is composed of two strip-shaped absorbent sheets that are spaced apart, the inner sides of the two absorbent sheets are curved and symmetrical about the longitudinal center of the absorbent core.

[0060] In some specific implementations, the width of the gap 701 is greater than or equal to the width of the first guide channel 50c.

[0061] Example 2

[0062] Combination Figure 1 and Figure 4 As shown in the figure, the absorbent core disclosed in this embodiment includes a covering cloth 40, a fluffy cloth 50, a reinforcing layer 60, a side absorbent sheet 70 and an end absorbent sheet 80.

[0063] The covering cloth 40 includes a covering cloth bottom 401, a covering cloth side 402 and a covering cloth upper part 403 which are connected as one body, and a receiving cavity 404 is formed inside the covering cloth by arranging the covering cloth bottom 401, the covering cloth side 402 and the covering cloth upper part 403;

[0064] The fluffy cloth 50 is arranged in the accommodating cavity 404, and polymer particles are attached to the fluffy cloth 50, and the polymer particles penetrate the fluffy cloth 50, so as to form a first polymer layer 50a attached to the upper end face of the fluffy cloth 50 on the upper side of the fluffy cloth 50, and form a second polymer layer 50b attached to the lower end face of the fluffy cloth 50 on the lower side of the fluffy cloth 50, and the second polymer layer 50b is spread over the width of the fluffy cloth 50, and a first guide channel 50c without polymer arranged along the length direction is reserved on the first polymer layer 50a, and the width L1 of the first guide channel 50c is 10-30mm, and a second guide channel 50d without polymer arranged along the length direction is reserved on the second polymer layer 50b, and the width L3 of the second guide channel 50d is 10-30mm;

[0065] The reinforcing layer 60 includes an upper covering cloth 602 and a lower covering cloth 601 which are disposed in the accommodating cavity 404 and connected to the fluffy cloth 50;

[0066] The edge moisture absorbent sheet 70 is arranged in the accommodating cavity 404 and is located between the fluffy cloth 50 and the upper part 403 of the covering cloth. The edge moisture absorbent sheet 70 is composed of at least two strip-shaped water-absorbent sheets distributed at intervals, and a gap 701 is provided between adjacent water-absorbent sheets to facilitate liquid diversion, and the gap 701 is arranged corresponding to the first diversion channel 50c, and the width L2 of the gap 701 is 10-50 mm;

[0067] The end hygroscopic sheets 80 are arranged at the two side ends of the absorbent core and at the outer side of the upper part 403 of the covering cloth. The positions of the end hygroscopic sheets correspond to the positions of the side hygroscopic sheets 70. The positions of the end hygroscopic sheets 80 correspond to the positions of the two side ends of the first guide channel 50c, so as to achieve the purpose of forming a slope embankment with closed sides on the upper part 403 of the covering cloth by the side hygroscopic sheets 70 and the end hygroscopic sheets 80. Such a design gathers the liquid in the middle of the absorbent core like a wall.

[0068] The wrapping method adopted by the above-mentioned covering cloth 40 can effectively prevent the polymer particles from leaking out. The upper part 403 of the covering cloth is overlapped to form a fully enclosed accommodating cavity 404, wherein the covering cloth 40 can be a hydrophilic non-woven fabric or a spunlace non-woven fabric, and the surface density of the fabric used by the covering cloth 40 can be 10-30g / ㎡;

[0069] The surface density of the fluffy cloth 50 may be 40-60 g / ㎡.

[0070] The reinforcing layer 60 may be a hydrophilic spunbonded nonwoven fabric or a spunlace nonwoven fabric, and the surface density of the fabric used for the reinforcing layer 60 may be 10-30 g / ㎡.

[0071] The edges of the water-absorbent sheet may be straight or curved.

[0072] The side absorbent sheets 70 and the end absorbent sheets 80 may be made of the same material.

[0073] The above-mentioned edge moisture-absorbing sheet 70 can be one of composite absorbent paper, dust-free paper, and diversion non-woven fabric with a composite polymer in the middle of the upper and lower toilet papers. The surface density of the material used in the absorbent sheet can be 30-70g / ㎡.

[0074] In some specific implementations, the edge absorbent sheet 70 is composed of two strip-shaped absorbent sheets that are spaced apart, the inner sides of the two absorbent sheets are curved and symmetrical about the longitudinal center of the absorbent core.

[0075] In some specific implementations, the width of the gap 701 is greater than or equal to the width of the first guide channel 50c.

[0076] Example 3

[0077] Combination Figure 1 and Figure 5 As shown in the content, the structural difference between the absorbent core disclosed in this embodiment and the absorbent core 1 described in Example 1 is that the edge moisture-absorbing sheet 70 is arranged above the upper part 403 of the covering cloth and outside the accommodating cavity 404.

[0078] The above-mentioned differences can also be applied to Example 2 to change the position of the side absorbent sheet 70 described in Example 2 to form another new absorbent core.

[0079] Example 4

[0080] Combination Figure 1 and Figure 6 As shown in the content, the structural difference between the absorbent core disclosed in this embodiment and the absorbent core 1 described in Example 1 is that the wrapping method adopted by the covering cloth 40 is that the upper part 403 of the covering cloth is not connected to form a semi-closed structure, such as: a semi-closed Ω structure.

[0081] The wrapping method of the covering cloth 40 described in this embodiment is also applicable to the absorbent core described in Examples 2 and 3.

[0082] Example 5

[0083] Combination Figure 1As shown, this embodiment provides a leak-proof diaper, which includes an absorbent core and a diaper body, wherein the diaper body includes a surface layer 3 and a bottom layer 2, and the absorbent core is filled between the surface layer 3 and the bottom layer 2. The absorbent core described herein can directly select any absorbent core in the above-mentioned embodiments 1 to 4.

[0084] When the absorbent core 1 in the leak-proof diaper starts to absorb liquid, in addition to the side absorbent sheet 70 absorbing part of the liquid, most of the liquid will quickly flow downward from the gap 701 in the middle position of the absorbent core 1 and the first guide channel 50c (and the second guide channel 50d when the second guide channel 50d is provided on the absorbent core), and more liquid enters the absorbent body 1, and then diffuses on both sides and both ends of the absorbent body 1. The side absorbent sheet 70 and the end absorbent sheet 80 form a slope embankment closed on all sides on the upper part 403 of the covering cloth to concentrate the liquid in the middle of the absorbent core, which effectively solves the problem of leakage on both sides and front and back caused by the absorbent core not absorbing in time due to the continuous release of liquid when the diaper starts to receive liquid.

[0085] The above undisclosed matters can be directly implemented by using existing technologies, so they will not be elaborated here.

[0086] 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. An absorbent core, characterized in that: It includes covering cloth, fluffy cloth, reinforcing layer, side absorbent sheet and end absorbent sheet. A containing cavity is provided inside the covering cloth; The fluffy cloth is arranged in the accommodating cavity, and polymer particles are attached to the fluffy cloth to form a polymer layer on the upper side and / or the lower side of the fluffy cloth, and a guide channel arranged along the length direction is provided on the polymer layer on at least one side; The reinforcement layer includes an upper covering cloth and a lower covering cloth which are arranged in the accommodating cavity and connected to the fluffy cloth; The edge moisture-absorbing sheet is arranged above the fluffy cloth, and the edge moisture-absorbing sheet is composed of at least two strip-shaped water-absorbing sheets distributed at intervals, and there is a gap between adjacent water-absorbing sheets, and the gap is arranged corresponding to the guide channel; The end hygroscopic sheets are arranged at the two side ends of the absorbent core and above the covering cloth. The positions of the end hygroscopic sheets correspond to the positions of the side hygroscopic sheets. The positions of the end hygroscopic sheets correspond to the positions of the two side ends of the guide channel. The side hygroscopic sheets and the end hygroscopic sheets form a slope bank closed on all sides on the upper part of the covering cloth.

2. The absorbent core according to claim 1, characterized in that The covering cloth comprises a covering cloth bottom, a covering cloth side and a covering cloth top which are connected as one body, so as to form a receiving cavity inside the covering cloth; The accommodating cavity is a fully enclosed structure or a semi-enclosed structure.

3. The absorbent core according to claim 1, characterized in that The polymer particles penetrate the fluffy cloth, and the upper and lower sides of the fluffy cloth are both provided with polymer layers, and the upper polymer layer is provided with a guide channel arranged along the length direction; There is no polymer in the flow guiding channel.

4. The absorbent core according to claim 3, characterized in that The polymer layer on the lower side is provided with a flow guide channel arranged along the length direction; The width of the diversion channel is greater than 0 mm and less than or equal to 30 mm; The fluffy cloth has a surface density of 40-60 g / ㎡.

5. The absorbent core according to claim 4, characterized in that The width of the diversion channel is 10-30 mm.

6. The absorbent core according to claim 1, characterized in that The covering fabric is a hydrophilic non-woven fabric or a spunlace non-woven fabric, and the surface density of the covering fabric is 10-30 g / ㎡; The reinforcing layer is a hydrophilic non-woven fabric or a spunlace non-woven fabric, and the surface density of the fabric used in the reinforcing layer is 10-30 g / ㎡.

7. The absorbent core according to claim 1, characterized in that The width of the gap is 10-50 mm; The edge of the water-absorbent sheet is straight or curved; The side absorbent sheet and the end absorbent sheet are made of the same material; The edge moisture absorbent sheet is one of composite absorbent paper, dust-free paper, and flow-guiding non-woven fabric with a composite polymer in the middle of the upper and lower toilet papers. The surface density of the material used in the edge moisture absorbent sheet is 30-70g / ㎡.

8. The absorbent core according to claim 1, characterized in that The edge absorbent sheet is composed of two strip-shaped absorbent sheets distributed at intervals, the inner sides of the two absorbent sheets are curved and the inner sides of the two absorbent sheets are symmetrical about the longitudinal center of the absorbent core; The width of the gap is greater than or equal to the width of the guide channel.

9. A leak-proof diaper, characterized in that: The absorbent core comprises the absorbent core described in any one of claims 1 to 8.

10. The leak-proof diaper according to claim 9, characterized in that: The invention also comprises a diaper body, wherein the diaper body comprises a surface layer and a bottom layer, and the absorbent core is filled between the surface layer and the bottom layer.

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