Absorption core processing device and absorption core

Abstract

The utility model provides an absorption core body processing device and an absorption core body, and the processing device comprises a conveying belt, a latex conveying mechanism, a first gluing machine for coating foamed latex on the conveying belt, a fluffy cotton conveying mechanism for outputting fluffy cotton, and an SAP putting mechanism for putting granular SAP on the fluffy cotton and reserving blank intervals on the fluffy cotton, the second gluing machine is used for uniformly coating foamed latex above the fed SAP; the infrared shaping mechanism, the drying mechanism and the slitting and winding mechanism are arranged on the rack; the absorption core body manufactured by the device comprises a first latex layer, a first SAP layer, a fluffy cotton layer, a second SAP layer and a second latex layer which are integrated from bottom to top; the two sides of the first SAP layer and the two sides of the second SAP layer are sealed by latex. Through the structural improvement of the device, the produced absorption core body can save SAP materials and prevent the SAP materials from leaking from the side direction in the length direction, and when the absorption core body serves as a raw material to manufacture products, pollution of the SAP materials to the products can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of hygiene product manufacturing equipment, specifically to an absorbent core processing device and an absorbent core produced using the processing device. Background Technology

[0002] Absorbent cores are crucial materials in the manufacture of sanitary napkins, diapers, nursing pads, and other hygiene products. The absorbent core directly affects the moisture absorption and comfort of these products. Traditional absorbent cores are primarily made from wood pulp, but due to their high cost and lack of environmental friendliness, they are gradually being replaced by newer materials. In recent years, high-performance absorbent polymers (SAP), a novel functional polymer material, have found applications in absorbent core manufacturing due to their high absorbency and excellent water retention properties, as illustrated in patent application CN 116421766. The apparatus and method for preparing liquid sanitary napkin absorbent cores disclosed in Chinese patent document A use SAP as one of the raw materials, which is continuously mixed with other raw materials and chemically reacted through a process. The SAP-containing absorbent core is then prepared using subsequent processes. This method of using SAP cannot maximize the absorbency of SAP. Recently, processing apparatus and methods have been seen that directly lay SAP particles on a substrate to create absorbent cores, which can maximize the absorbency of SAP. However, in existing processing apparatuses, because the SAP particles are fully spread on the substrate, the SAP particles leak out from both sides along the length of the absorbent core during transportation and when it is used as raw material in the manufacture of sanitary napkins, diapers, and other products. This not only wastes the expensive SAP but also contaminates the sanitary napkins, diapers, and other products. Therefore, it is necessary to improve existing processing apparatuses for manufacturing absorbent cores using SAP to overcome these technical problems. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned technical problems existing in the prior art and to provide an improved absorbent core processing device. The absorbent core produced by this device can save on SAP material and thus save costs. Furthermore, when the manufactured absorbent core is transported or used as a raw material in the manufacture of sanitary napkins, diapers, and other products, the SAP particles will significantly reduce SAP leakage and contamination of the products.

[0004] The technical solution of this utility model is as follows: The absorbent core processing device of this utility model includes a conveyor belt that can reciprocate on the production line, a latex conveying mechanism for outputting the foamed latex required for production, a first coating machine for uniformly coating the foamed latex output by the latex conveying mechanism onto the conveyor belt according to a set width and thickness, and its structural features are: it also includes a fluffing cotton conveying mechanism for continuously outputting fluffing cotton above the latex coated on the conveyor belt, a SAP feeding mechanism for feeding granular SAP onto the continuously moving fluffing cotton and leaving blank intervals on the fluffing cotton, a second coating machine for uniformly coating the foamed latex output by the latex conveying mechanism onto the fed SAP according to a set thickness and with the same width as the fluffing cotton, an infrared shaping mechanism for heating and shaping the product on the conveyor belt, a drying mechanism for dehydrating and drying the product on the conveyor belt after shaping, and a slitting and winding mechanism for slitting and winding the product on the conveyor belt after dehydration and drying.

[0005] A further embodiment is as follows: the SAP dispensing mechanism includes a frame, a hopper for holding granular SAP located above the frame, a drive device located on the frame, and a first dispensing roller driven by the drive device to grab granular SAP from the hopper and dispensing it onto the fluffy cotton. The first dispensing roller has two or more picking and dispensing sections. Smooth intervals of the same width are provided between two adjacent picking and dispensing sections and on both sides of the dispensing roller.

[0006] A further embodiment is: the material handling section is provided with five to fifty parts, and the corresponding smooth interval is provided with six to fifty-one parts; the width of each material handling section is 30 to 75 mm, and the width of each smooth interval is 5 to 20 mm.

[0007] A further option is that the material handling section is a grid structure or a trough structure.

[0008] A further embodiment is: the SAP dispensing mechanism includes a frame, a hopper located above the frame for holding granular SAP, a drive device located on the frame, a second dispensing roller driven by the drive device for grabbing granular SAP from the hopper and dispensing it onto the fluffy cotton, an mounting rod located on the frame and below the dispensing roller, and two or more material separating blocks that are adjustablely positioned on the mounting rod.

[0009] A further option is: the second feeding roller has a structure in which several material picking grooves are evenly arranged along the axial direction; or the second feeding roller has a structure in which material picking countersunk holes are evenly distributed throughout; or the second feeding roller has a structure in which material picking grids are evenly distributed throughout.

[0010] A further embodiment is: the latex conveying mechanism includes a mixer for stirring the prepared latex raw materials, a storage tank for storing the stirred latex raw materials output by the mixer, and a foaming machine for foaming the latex raw materials output by the storage tank; the pore size of the foamed latex after being foamed by the foaming machine is 0.01mm to 0.2mm.

[0011] A further option is that the thickness of the foamed latex applied by the first and second gluing machines is 0.5mm to 6mm.

[0012] A further option is that the conveyor belt is a silicone belt with good anti-sticking properties.

[0013] An absorbent core is manufactured using the aforementioned absorbent core processing apparatus. The absorbent core comprises, from bottom to top, an integral first latex layer, a first SAP layer, a fluffy cotton layer, a second SAP layer, and a second latex layer; wherein the first SAP layer and the second SAP layer are both sealed with latex on both sides of the absorbent core along its length.

[0014] This invention has several advantages: Through structural improvements, it reduces the amount of SAP material used in the production of absorbent cores by approximately 20% compared to existing technologies, thus saving on manufacturing costs. Furthermore, the manufactured absorbent cores completely prevent SAP particles from leaking outwards from both sides along their length during transportation. When used as raw materials in the manufacture of sanitary napkins, diapers, and other products, the resulting absorbent cores significantly reduce SAP particle leakage, preventing contamination of the products. Moreover, compared to existing similar products, its structure is simpler and its cost is lower. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 A structural diagram of an SAP deployment organization in China;

[0017] Figure 3 for Figure 2 The right view;

[0018] Figure 4 for Figure 2 A schematic diagram of a type of feed roller;

[0019] Figure 5 for Figure 2 Another structural diagram of the feed roller;

[0020] Figure 6 for Figure 1 Another structural diagram of an SAP deployment agency in China;

[0021] Figure 7 for Figure 6 A schematic diagram of a type of feed roller;

[0022] Figure 8 for Figure 6 A schematic diagram of the second structure of the feed roller;

[0023] Figure 9 for Figure 6 A schematic diagram of the third structure of the feed roller;

[0024] Figure 10 This is a schematic diagram of the structure of the absorber core of this utility model.

[0025] The reference numerals in the above figures are as follows:

[0026] 1. Conveyor belt; 2. Latex conveying mechanism; 2. Mixer; 2. Storage tank; 2. Foaming machine; 3. First gluing machine; 4. Fluffy cotton conveying mechanism; 4. Fluffy cotton; 5. SAP feeding mechanism; 5. Frame; 51. Hopper; 52. Drive device; 53. Feeding roller; 54. First feeding roller; 54. Feeding section; 54. Smooth interval; 54. Second feeding roller; 54. Feeding trough; 54. Feeding countersunk hole; 54. Feeding grid; 54. Separator; 55. Mounting rod; 56. Second gluing machine; 6. Infrared shaping mechanism; 7. Drying mechanism; 8. Slitting and winding mechanism; 9. Slitting machine; 9. Winding machine; 9. Absorbent core; 10. First latex layer; 10. First SAP layer; 10. Fluffy cotton layer; 10. Second SAP layer; 10. Second latex layer; 10. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] (Example 1)

[0029] See Figures 1 to 9 The absorbent core processing device in this embodiment mainly consists of a conveyor belt 1, a latex conveying mechanism 2, a first gluing machine 3, a fluffy cotton conveying mechanism 4, a SAP feeding mechanism 5, a second gluing machine 6, an infrared shaping mechanism 7, a drying mechanism 8, and a slitting and winding mechanism 9.

[0030] The conveyor belt 1 is installed on the production line in a reciprocating motion. The conveyor belt 1 is made of silicone to take advantage of its good anti-sticking properties.

[0031] The latex conveying mechanism 2 is used to output the foamed latex required for production. In this embodiment, the latex conveying mechanism 2 includes a mixer 2-1 for stirring the prepared latex raw materials, a storage tank 2-2 for storing the stirred latex raw materials output from the mixer 2-1, and a foaming machine 2-3 for foaming the latex raw materials output from the storage tank 2-2. In this embodiment, the prepared latex raw materials consist of 90% synthetic latex, 4.6% sulfur, 1% zinc oxide, 0.5% accelerator, 0.5% dispersant, 0.2% potassium pyrophosphate, 0.2% siloxane, and 3% foaming agent by weight. The foaming pore size of the latex foamed by the foaming machine 2-3 is preferably 0.01mm to 0.2mm.

[0032] The first coating machine 3 is used to uniformly coat the foamed latex output from the latex conveying mechanism 2 (specifically the foaming machine 2-3) onto the conveyor belt according to the set width and thickness. The thickness of the latex coating is preferably 0.5mm to 6mm.

[0033] The fluffy cotton conveying mechanism 4 is used to continuously output the fluffy cotton 4-1 required for production above the latex coated on the conveyor belt. Fluffy cotton 4-1, also known as fluffy cloth, is a type of nonwoven fabric, also called space cotton or vacuum cotton.

[0034] One or more SAP dispensing mechanisms 5 are installed above the continuously moving fluffy cotton 4-1 to continuously dispense granular SAP onto the fluffy cotton 4-1. At this time, there will be granular SAP above, below and inside the fluffy cotton 4-1. The fluffy cotton 4-1 also has several intervals without SAP. During subsequent cutting, cutting is performed along the center line of each interval.

[0035] One structure of SAP deployment agency 5 is as follows: Figure 2 and Figure 3 As shown, it mainly consists of a frame 51, a hopper 52 located above the frame 1 for holding granular SAP, a drive unit 53 including a motor located on the frame 1, and a feeding roller 54 driven by the drive unit 53 to grab granular SAP from the hopper 52 and feed it onto the fluffy cotton 4-1. The feeding roller 54 that matches this SAP feeding mechanism 5 is called the first feeding roller 54-1, as shown in the figure. Figure 4 and Figure 5 As shown, the first feeding roller 54-1 is provided with two or more feeding / taking sections 54-1-1; smooth intervals 54-1-2 of the same width are provided between two adjacent feeding / taking sections 54-1-1 and on both sides of the first feeding roller 54-1. The feeding / taking sections 54-1-1 can be arranged as follows: Figure 4 The grid structure shown can also be adopted as follows: Figure 5The trough-shaped structure shown can also employ other structures (not shown) that can grab SAP granules from the hopper 52 and discharge them downwards. In this embodiment, the first discharge roller 54-1 is provided with 5 to 50 feeding sections 54-1-1 ( Figure 4 , 5 (As shown in the diagram, there are 5), and the width L1 of each feeding section 54-1-1 is 30-75 mm. Correspondingly, there are 6-51 smooth intervals 54-1-2, and the width L2 of each smooth interval 54-1-2 is 5-20 mm. In this embodiment, the improvement of the structure of the first feeding roller 54-1 compared with the prior art allows the SAP feeding mechanism 5 to form 5 SAP paths on the fluffy cotton 4-1 when feeding granular SAP. Each SAP path has a blank space on both sides with the same width as the smooth interval 54-1-2. When the finished product is cut, it is cut from the center line of each blank, so that each finished product has an area of ​​about 2.5-10 mm wide on both sides where no SAP is placed. This area is filled with latex, so that the SAP cannot leak out from both sides of the absorbent core finished product along the length direction.

[0036] Another structure of SAP deployment agency 5 is as follows: Figure 6 As shown, it mainly consists of a frame 51, a hopper 52 located above the frame 1 for holding granular SAP, a drive unit 53 on the frame 1 including a motor, a feeding roller 54 driven by the drive unit 53 to grab granular SAP from the hopper 52 and feed it onto the fluffy cotton 4-1, a material separator 55, and a mounting rod 56. The feeding roller 54, which is matched with this type of SAP feeding mechanism 5, is called the second feeding roller 54-2. The structure of the second feeding roller 54-2 is existing technology. One structure of the second feeding roller 54-2 is that it has several 2-6mm wide feeding slots 54-2-1 (without blank intervals) evenly arranged along the axial direction. Figure 7 As shown; the second structure of the second feeding roller 54-2 is that it is evenly covered with material picking holes 54-2-2 with a diameter of 2-6mm, as shown. Figure 8 As shown; the third structure of the second feeding roller 54-2 is that it is evenly covered with material-collecting grids 54-2-3, as shown. Figure 9As shown. Mounting rod 56 is mounted on frame 51 and located below feeding roller 54. Several spacer blocks 55 are adjustablely positioned on mounting rod 56. The number of spacer blocks 55 is determined according to the design of how many blank spaces are formed on the fluffy cotton 4-1. During operation, when the second feeding roller 54-2 picks up granular SAP from hopper 52 and feeds it onto fluffy cotton 4-1, the spacer blocks 55 obstruct the flow, leaving blank spaces on fluffy cotton 4-1 with the same number and width as the spacer blocks 55. During finished product slitting, the product is cut from the center line of each blank, ensuring that both sides of each finished product have areas filled with latex instead of SAP, thus preventing SAP from leaking outwards from both sides of the absorbent core along its length.

[0037] The second coating machine 6 is used to uniformly coat the foamed latex output from the latex conveying mechanism 2 (specifically the foaming machine 2-3) on the SAP above it according to the set thickness and in a manner with the same width as the fluffy cotton 4-1. That is, in this embodiment, latex is uniformly coated on the aforementioned 5 SAPs and 6 blanks. The thickness of the latex coating is preferably 0.5mm to 6mm.

[0038] The infrared shaping mechanism 7 is used to heat and shape the products on the conveyor belt 1 using infrared rays. In this embodiment, the working temperature of the infrared shaping mechanism 7 is set to 60℃~130℃.

[0039] The drying mechanism 8 is used to dehydrate and dry the products on the conveyor belt 1 after they have been shaped by the infrared shaping mechanism 7. In this embodiment, the working temperature of the drying mechanism 8 is set to 100℃~160℃.

[0040] The slitting and winding mechanism 9 is used to slit and wind up the products on the conveyor belt 1 after they have been dehydrated and dried by the drying mechanism 8. In this embodiment, the slitting and winding mechanism 9 includes a slitting machine 9-1 and a winding machine 9-2; the slitting machine 9-1 cuts the products on the conveyor belt 1 into 5 to 50 strip-shaped products, and the winding machine 9-2 winds them into 5 to 50 finished raw material rolls.

[0041] It should be noted that the aforementioned conveyor belt 1, latex conveying mechanism 2, first gluing machine 3, fluffy cotton conveying mechanism 4, second gluing machine 6, infrared shaping mechanism 7, drying mechanism 8, and slitting and winding mechanism 9 are all prior art covered by the patent document with application publication number CN118267238A. Therefore, the specific structure and working principle of each of the above mechanisms need not be elaborated.

[0042] See Figure 10The absorbent core 10 produced using the absorbent core processing apparatus of this embodiment includes a first latex layer 10-1, a first SAP layer 10-2, a fluffy cotton layer 10-3, a second SAP layer 10-4, and a second latex layer 10-5 integrally formed from bottom to top. The first SAP layer 10-2 and the second SAP layer 10-4 are both sealed with latex on both sides of the absorbent core 10 along its length. Compared to existing similar products, the absorbent core 10 of this embodiment not only saves approximately 20% of SAP material, thus reducing manufacturing costs, but also prevents SAP particles from leaking out from both sides of the absorbent core during transportation. Furthermore, when used as raw material to manufacture sanitary napkins, diapers, and other products, the absorbent core 10 significantly reduces SAP particle leakage, thus preventing product contamination. In addition, the absorbent core 10 of this embodiment has a simpler structure and lower cost compared to existing similar products.

[0043] The above embodiments are descriptions of specific implementations of this utility model, and not limitations thereof. Those skilled in the art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should be included in the patent protection scope of this utility model.

Claims

1. An absorbent core processing apparatus, comprising a conveyor belt reciprocatingly mounted on a production line, a latex conveying mechanism for outputting foamed latex required for production, and a first coating machine for uniformly coating the foamed latex output from the latex conveying mechanism onto the conveyor belt according to a set width and thickness, characterized in that: It also includes a fluffing conveyor mechanism for continuously outputting fluffing above the latex coated on the conveyor belt, a SAP dispensing mechanism for dispensing granular SAP onto the continuously moving fluffing with blank intervals on the fluffing, a second coating machine for uniformly coating the foamed latex output from the latex conveyor mechanism onto the dispensed SAP with a width the same as the width of the fluffing according to a set thickness, an infrared shaping mechanism for heating and shaping the products on the conveyor belt, a drying mechanism for dehydrating and drying the products on the conveyor belt after shaping, and a slitting and winding mechanism for slitting and winding the products on the conveyor belt after dehydration and drying.

2. The absorber core processing apparatus according to claim 1, characterized in that: The SAP dispensing mechanism includes a frame, a hopper for holding granular SAP located above the frame, a drive device located on the frame, and a first dispensing roller driven by the drive device to grab granular SAP from the hopper and dispensing it onto the fluffy cotton. The first dispensing roller has two or more picking and dispensing sections. Smooth intervals of the same width are provided between two adjacent picking and dispensing sections and on both sides of the dispensing roller.

3. The absorber core processing apparatus according to claim 2, characterized in that: The material handling section is provided with five to fifty units, and the corresponding smooth interval is provided with six to fifty-one units; the width of each material handling section is 30 to 75 mm, and the width of each smooth interval is 5 to 20 mm.

4. The absorber core processing apparatus according to claim 2, characterized in that: The material handling section is a grid structure or a trough structure.

5. The absorber core processing apparatus according to claim 1, characterized in that: The SAP dispensing mechanism includes a frame, a hopper located above the frame for holding granular SAP, a drive unit located on the frame, a second dispensing roller driven by the drive unit for grabbing granular SAP from the hopper and dispensing it onto the fluffy cotton, a mounting rod located on the frame and below the dispensing roller, and two or more material separators adjustablely positioned on the mounting rod.

6. The absorber core processing apparatus according to claim 5, characterized in that: The second feeding roller has a structure in which several material picking grooves are evenly arranged along the axial direction; or the second feeding roller has a structure in which material picking countersunk holes are evenly distributed throughout; or the second feeding roller has a structure in which material picking grids are evenly distributed throughout.

7. The absorber core processing apparatus according to claim 1, characterized in that: The latex conveying mechanism includes a mixer for stirring the prepared latex raw materials, a storage tank for storing the stirred latex raw materials output by the mixer, and a foaming machine for foaming the latex raw materials output by the storage tank; the pore size of the foamed latex after being foamed by the foaming machine is 0.01mm to 0.2mm.

8. The absorber core processing apparatus according to claim 1, characterized in that: The thickness of the foamed latex applied by the first and second gluing machines is 0.5mm to 6mm.

9. The absorber core processing apparatus according to claim 1, characterized in that: The conveyor belt is a silicone belt with good anti-sticking properties.

10. An absorbent core, characterized in that: The absorbent core is manufactured using the absorbent core processing apparatus of claim 1. The absorbent core includes a first latex layer, a first SAP layer, a fluffy cotton layer, a second SAP layer, and a second latex layer integrally formed from bottom to top; wherein the first SAP layer and the second SAP layer are both sealed with latex on both sides of the absorbent core along the length direction.

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