Active absorption core structure and preparation method thereof

Abstract

The invention relates to the field of disposable hygienic products, in particular to an active absorption core structure and a preparation method thereof, and solves the problem that the absorption effect of existing hygienic products capable of removing peculiar smells cannot be guaranteed. The active absorption core structure comprises an outer wrapping layer and a core layer located in the outer wrapping layer; the core body layer comprises an absorption layer and an adsorption structure part embedded on the absorption layer, the adsorption structure part is any one or a mixture of two or three of activated carbon, activated aluminum oxide and polyacrylamide, and the weight of the adsorption structure part is less than 10% of that of the absorption layer.

Description

Technical Field

[0001] The invention relates to the field of disposable sanitary products, and in particular to an active absorption core structure and a preparation method thereof. Background Art

[0002] Currently, most disposable sanitary products do not have the function of deodorizing and removing odors because they are consumables that are thrown away after use. Although there are products on the market that have this functional structural layer, most of them use activated carbon or other scented materials directly laid in the core.

[0003] As shown in the Chinese patent with authorization announcement number CN 221534393 U, a cotton core with an activated carbon fiber interlayer includes a cotton core body, the cotton core body includes a water-absorbing layer, and a shape-matched activated carbon fiber layer is sandwiched in the water-absorbing layer, and the area of ​​the activated carbon fiber layer is equal to or smaller than the area of ​​the water-absorbing layer.

[0004] In this technical solution, activated carbon fiber is used to increase functionality, but the material cost of this structure is high. While adding an activated carbon fiber layer, the absorption rate and amount are reduced to a certain extent, affecting usage. Summary of the invention

[0005] Therefore, the present invention provides an active absorption core structure and a preparation method thereof, which solves the problem that the absorption effect of current odor-removing hygiene products cannot be guaranteed.

[0006] To achieve the above object, the present invention is achieved through the following technical solutions:

[0007] An active absorption core structure comprises an outer wrapping layer and a core layer located inside the outer wrapping layer, wherein the core layer comprises an absorption layer and an adsorption structure embedded in the absorption layer, wherein the adsorption structure is any one or a mixture of two or three of activated carbon, activated alumina, and polyacrylamide, and the weight of the adsorption structure is less than 10% of that of the absorption layer.

[0008] Preferably, the adsorption structure is evenly distributed on the surface of the absorption layer and embedded in the surface of the absorption layer.

[0009] Preferably, the absorption layer includes a polymer layer and a wood pulp fiber layer located on the upper end of the polymer layer, and the adsorption structure is sandwiched between the wood pulp fiber layer and the polymer layer and is evenly distributed on the surface of the polymer layer.

[0010] Preferably, the adsorption structure is embedded in layers inside the absorption layer.

[0011] Preferably, the absorption layer comprises a stacked wood pulp fiber layer, a fluffy cotton layer and a polymer layer, and the adsorption structure is applied on the fluffy cotton layer to form a stacked distribution structure.

[0012] A method for preparing an active absorbent core structure comprises the following steps:

[0013] S1, take the outer wrapping material for assembly line transportation;

[0014] S2, feeding the core layer material above the outer wrapping layer material, so that the core layer material covers the center of the outer wrapping layer material and continues to be conveyed with the outer wrapping layer material;

[0015] S3, placing the adsorption structure on the core layer material;

[0016] S4, applying glue to both sides of the upper surface of the outer wrapping layer material, and folding the width sides upward and inward in sequence to wrap the product obtained in step S3;

[0017] S5, pressing and rolling up the material obtained in step S4 to obtain the core body.

[0018] A method for preparing an active absorbent core structure comprises the following steps:

[0019] S1, take the outer wrapping material for assembly line transportation;

[0020] S2, a feeding mechanism is arranged above the outer wrapping layer material for mixing and feeding the core layer material and the adsorption structure part, and the core layer material and the adsorption structure part are fed so that the core layer material and the adsorption structure part material cover the center of the outer wrapping layer material and continue to be fed with the outer wrapping layer material;

[0021] S3, applying glue to both sides of the upper surface of the outer wrapping layer material, and folding the width sides upward and inward in sequence to wrap the product obtained in step S3;

[0022] S4, pressing and rolling up the material obtained in step S4 to obtain the core body.

[0023] Preferably, the feeding mechanism includes a first feeding hopper for feeding the core layer material, a second feeding hopper for feeding the adsorption structure material, a mixing hopper for mixing provided at the lower ends of the first feeding hopper and the second feeding hopper, and a feeding hopper for feeding provided at the lower end of the mixing hopper, wherein a feeding hole is provided at the lower end of the feeding hopper, a stirring screw assembly for mixing and stirring is provided in the mixing hopper, an elastic connection is achieved between the feeding hopper and the mixing hopper by a plurality of connecting springs, and a vibration motor for feeding is installed on the feeding hopper.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are:

[0025] This technical solution adds materials that can absorb sodium ions and chloride ions in urine to the materials of the traditional absorption core, thereby reducing the ions in the urine that produce odor, and correspondingly allowing the polymer to absorb more urine, thereby achieving the functions of removing odor and deodorizing. The structure adopts the form of a mixture of an adsorption structure part and an absorption layer, and the ratio is strictly controlled. This core structure reduces the amount of polymer added while ensuring the absorption amount. It does not use traditional layered adsorption materials, and there will be no problem of affecting the absorption rate. It is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the stacked structure of a core body according to an embodiment of the present invention;

[0027] Figure 2 This is a structural schematic diagram of a feeding mechanism in Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the movement process of another structure of the lower hopper in the first embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the stacked structure of the core body of the second embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the stacked structure of three cores in an embodiment of the present invention.

[0031] Figure numerals: 100, outer wrapping layer; 200, absorption layer; 201, polymer layer; 202, wood pulp fiber layer; 203, fluffy cotton layer; 300, adsorption structure; 1, feeding mechanism; 11, first feed hopper; 12, second feed hopper; 13, mixing hopper; 131, stirring screw assembly; 14, feeding hopper; 15, connecting spring. DETAILED DESCRIPTION

[0032] The following will describe the implementation methods of the present invention in detail in conjunction with specific embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0033] Embodiment 1

[0034] refer to Figure 1An active absorption core structure includes an outer wrapping layer 100 and a core layer located inside the outer wrapping layer 100, wherein the core layer includes an absorption layer 200 and an adsorption structure part 300 embedded in the absorption layer 200, wherein the adsorption structure part 300 is any one or a mixture of two or three of activated carbon, activated alumina, and polyacrylamide, and the weight of the adsorption structure part 300 is less than 10% of the absorption layer 200. This technical solution adds materials that can absorb sodium ions and chloride ions in urine to the materials of the traditional absorption core, thereby reducing the ions in the urine that produce odor, and correspondingly allowing the polymer to absorb more urine, thereby achieving the functions of removing odor and deodorizing. The structure adopts the form of mixing the adsorption structure part 300 with the absorption layer 200, and strictly controls the ratio. This core structure reduces the amount of polymer added, while ensuring the absorption amount, and does not use the traditional stacked adsorption materials, and will not affect the absorption rate. It is highly practical. At the same time, the adsorption structure part 300 is set as a powder mixture in the polymer, which can avoid the leakage of traditional free activated carbon and other materials and appear outside the core to affect the use. Among them, when activated carbon and activated alumina are used, they can have sufficient adsorption and deodorization effects; and when mixed with polyacrylamide, according to the characteristics of polyacrylamide, the back seepage can be further reduced;

[0035] Here, the production adopts the form of mixing materials first and then cutting and molding. Specifically, a method for preparing an active absorbent core structure includes the following steps:

[0036] S1, take the outer wrapping layer 100 material for assembly line transportation;

[0037] S2, a feeding mechanism 1 for mixing and feeding the core layer material and the adsorption structure part 300 is arranged above the outer wrapping layer 100 material, and the core layer material and the adsorption structure part 300 are fed so that the core layer material and the adsorption structure part 300 cover the center of the outer wrapping layer 100 material and continue to be fed with the outer wrapping layer 100 material; specifically, Figure 2As shown, the feeding mechanism 1 includes a first feeding hopper 11 for feeding the core layer material, a second feeding hopper 12 for feeding the adsorption structure 300 material, a mixing hopper 13 for mixing arranged at the lower ends of the first feeding hopper 11 and the second feeding hopper 12, and a feeding hopper 14 for feeding arranged at the lower end of the mixing hopper 13, wherein a feeding hole is arranged at the lower end of the feeding hopper 14, a stirring screw assembly 131 for mixing and stirring is arranged in the mixing hopper 13, the feeding hopper 14 and the mixing hopper 13 are elastically connected by a plurality of connecting springs 15, and a vibration motor for feeding (not shown in the figure) is installed on the feeding hopper 14. During use, the core layer material and the adsorption structure part 300 material are fed separately, and then enter the mixing hopper 13 for mixing, and are fully broken up by the stirring screw assembly 131; then the material continues to move downward and enters the feed hopper 14; during the feeding process, the vibration motor is started to drive the feed hopper 14 to vibrate, and the mixed material falls from the feeding hole onto the outer wrapping layer 100 below; in this way, continuous and complete feeding can be carried out along with the conveying process of the assembly line, and the internal content of the formed core layer is evenly distributed, thereby ensuring the consistency of the core product.

[0038] Among them, Figure 3 As shown, the lower hopper 14 can also be connected to a steering mechanism that drives the lower hopper 14 to rotate around its own center. At this time, the lower end of the lower hopper 14 is spherical, and the discharge holes are distributed on the spherical surface. Reciprocating spiral discharge is realized with the rotation process, which can better ensure the uniformity of discharge and the integrity of coverage compared with the previous structure; at this time, the connecting spring 15 not only plays the role of cooperating with the vibration discharge, but is also arranged as a structural retainer of the lower hopper 14, which can ensure the smoothness of the rotation process and the smooth progress of reasonable shaking.

[0039] S3. Glue the two sides of the upper surface of the outer wrapping layer 100 material, and fold the two sides of the width upward and inward in sequence to wrap the product obtained in step S3; under this folded structure, a double-layer wrapping design is formed from the upper layer, which further avoids the leakage of the adsorption material and also eliminates the coating structure layer located on the upper layer.

[0040] S4, the material obtained in step S4 is pressed and rolled up to obtain the core body, which is ready to be used in subsequent production links.

[0041] Embodiment 2

[0042] Also refer to Figure 4, the adsorption structure 300 is evenly arranged on the surface of the absorption layer 200 and embedded in the surface of the absorption layer 200. Specifically, the absorption layer 200 includes a polymer layer 201 and a wood pulp fiber layer 202 located on the upper end of the polymer layer 201, and the adsorption structure 300 is sandwiched between the wood pulp fiber layer 202 and the polymer layer 201, and is evenly arranged on the surface of the polymer layer 201. Structurally, the use of the wood pulp fiber layer 202 located at the uppermost end can improve the instantaneous effect of the core body on the liquid and ensure the absorption rate.

[0043] Accordingly, in production, the following process is adopted.

[0044] A method for preparing an active absorbent core structure comprises the following steps:

[0045] S1, take the outer wrapping layer 100 material for assembly line transportation;

[0046] S2, unloading the core layer material above the outer wrapping layer 100 material, so that the core layer material covers the center of the outer wrapping layer 100 material and continues to be conveyed along with the outer wrapping layer 100 material;

[0047] S3, the adsorption structure 300 is laid on the core layer material; similarly, after the adsorption structure 300 is laid, the same equipment is designed to lay the wood pulp fiber layer 202;

[0048] S4, applying glue to both sides of the upper surface of the outer wrapping layer 100 material, and folding the width sides upward and inward in sequence to wrap the product obtained in step S3;

[0049] S5, pressing and rolling up the material obtained in step S4 to obtain the core body.

[0050] Compared with the equipment in the first embodiment, the production line of the equipment used in this embodiment is lengthened, and the product effect is inferior to that of the product in the first embodiment.

[0051] Embodiment 3

[0052] Also refer to Figure 5 , the adsorption structure part 300 is embedded in the inside of the absorption layer 200 in a hierarchical manner; wherein the absorption layer 200 includes a stacked wood pulp fiber layer 202, a fluffy cotton layer 203 and a polymer layer 201, and the adsorption structure part 300 is applied on the fluffy cotton layer 203 to form a stacked distribution structure; at this time, compared with the second embodiment, the adsorption structure part 300 is cut onto the fluffy cotton layer 203 during production, and cooperates with the internal cavity of the fluffy cotton layer 203 to realize another fixed structure for the adsorption structure part 300 inside the absorption layer 200.

[0053] 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. An active absorbent core structure, comprising an outer wrapping layer (100) and a core layer located inside the outer wrapping layer (100), characterized in that: The core layer comprises an absorption layer (200) and an adsorption structure (300) embedded in the absorption layer (200); the adsorption structure (300) is any one of activated carbon, activated alumina, and polyacrylamide, or a mixture of two or three thereof; the weight of the adsorption structure (300) is less than 10% of the weight of the absorption layer (200).

2. An active absorbent core structure according to claim 1, characterized in that: The adsorption structure part (300) is evenly distributed on the surface of the absorption layer (200) and embedded in the surface of the absorption layer (200).

3. An active absorbent core structure according to claim 2, characterized in that: The absorption layer (200) comprises a polymer layer (201) and a wood pulp fiber layer (202) located on the upper end of the polymer layer (201); the adsorption structure (300) is sandwiched between the wood pulp fiber layer (202) and the polymer layer (201) and is evenly distributed on the surface of the polymer layer (201).

4. An active absorbent core structure according to claim 1, characterized in that: The adsorption structure part (300) is embedded in layers inside the absorption layer (200).

5. An active absorbent core structure according to claim 4, characterized in that: The absorption layer (200) comprises a wood pulp fiber layer (202), a fluffy cotton layer (203) and a polymer layer (201) which are stacked, and the adsorption structure part (300) is applied on the fluffy cotton layer (203) to form a stacked distribution structure.

6. A method for preparing the active absorbent core structure according to claim 1, characterized in that: The following steps are involved: S1, taking the outer wrapping layer (100) material for assembly line transportation; S2, feeding the core layer material above the outer wrapping layer (100) material, so that the core layer material covers the center of the outer wrapping layer (100) material and continues to be transported along with the outer wrapping layer (100) material; S3, placing the adsorption structure (300) above the core layer material; S4, applying glue to both sides of the upper surface of the outer wrapping layer (100) material, and folding the width sides upward and inward in sequence to wrap the product obtained in step S3; S5, pressing and rolling up the material obtained in step S4 to obtain the core body.

7. A method for preparing the active absorbent core structure according to claim 1, characterized in that: The following steps are involved: S1, taking the outer wrapping layer (100) material for assembly line transportation; S2, a feeding mechanism (1) for mixing and feeding the core layer material and the adsorption structure (300) is arranged above the outer wrapping layer (100) material, and the core layer material and the adsorption structure (300) are fed so that the core layer material and the adsorption structure (300) cover the center of the outer wrapping layer (100) material and continue to be fed along with the outer wrapping layer (100) material; S3, applying glue to both sides of the upper surface of the outer wrapping layer (100) material, and folding the width sides upward and inward in sequence to wrap the product obtained in step S3; S4, pressing and rolling up the material obtained in step S4 to obtain the core body.

8. The method for preparing an active absorbent core structure according to claim 7, characterized in that: The material discharge mechanism (1) comprises a first feed hopper (11) for feeding the core layer material, a second feed hopper (12) for feeding the adsorption structure (300) material, a mixing hopper (13) arranged at the lower ends of the first feed hopper (11) and the second feed hopper (12) for mixing materials, and a material discharge hopper (14) arranged at the lower end of the mixing hopper (13) for discharging materials, wherein a material discharge hole is arranged at the lower end of the material discharge hopper (14), a stirring screw assembly (131) for mixing and stirring materials is arranged in the mixing hopper (13), the material discharge hopper (14) and the mixing hopper (13) are elastically connected via a plurality of connecting springs (15), and a vibration motor for discharging materials is installed on the material discharge hopper (14).

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