Disposable nursing article and manufacturing method thereof

Abstract

A disposable nursing absorption article is provided with a liquid-permeable surface layer, a liquid-tight bottom layer and an absorption core body located between the liquid-permeable surface layer and the liquid-tight bottom layer, the absorption core body is provided with a main absorption area and a protection area, the weight of the absorption core body is 70-400 gsm, the weight of macromolecule water-absorbent resin in the main absorption area is 50-200 gsm, and the weight of macromolecule water-absorbent resin in the protection area is 50-200 gsm. In the absorption core body, the content of the high-molecular water-absorbent resin located in the main absorption area is larger than or equal to 95%, the content of the high-molecular water-absorbent resin located in the protection area is smaller than or equal to 5%, the absorption performance requirement of the main absorption area of the product absorption core layer is met, and meanwhile the cost is effectively saved. The invention further provides a preparation method of the disposable nursing absorption article. The high-molecular water-absorbent resin can be accurately positioned and uniformly scattered in the main absorption area of the absorption core layer through a positioning and scattering technology.

Description

Technical Field

[0001] The present invention belongs to the field of sanitary products, and specifically relates to a disposable care product and a manufacturing method thereof. Background Art

[0002] Nursing pads are commonly used disposable sanitary products and are widely used in hospital surgery, gynecological examinations, maternal care, child care, paralyzed patients, patients with incontinence and mobility difficulties, women during menstruation, and traveling. Nursing pads are easy to use, hygienic, soft and comfortable, and leak-proof. They can ensure that the user's body is dry and comfortable, prevent dirty sheets and mattresses, and eliminate the risk of cross-infection between users and between users and caregivers, reducing the nursing workload of medical staff and their families and avoiding the pain of changing sheets every day. They are ideal products for hospital and home care.

[0003] The structure of current nursing pad products is mostly three-layer, including the surface layer, the absorption layer and the bottom layer (bottom film). The size of the surface layer and the bottom layer is basically equal. The absorption core layer is slightly smaller than the surface layer and the bottom layer in the horizontal and vertical directions. The surface layer and the bottom layer are joined together on the outside of the horizontal edge and the vertical edge of the absorption core layer. The absorption core layer is generally made of a mixture of wood pulp fiber and polymer water-absorbing resin. The polymer water-absorbing material is evenly distributed in the absorbent body, and the polymer water-absorbing material has good fixation in the absorbent body. The polymer water-absorbing resin in the absorption core is expensive. The above design requires a large amount of polymer water-absorbing resin, resulting in a high cost of the nursing pad. In actual use, users often contact the middle part of the nursing pad, so the water absorption performance of the middle part is required to be higher, and the water absorption performance of other parts is relatively lower. Considering this situation, the absorption layer of the nursing pad can be optimized to take into account the advantages of high water absorption performance and low cost. Summary of the invention

[0004] In view of the above problems, the present invention aims to provide a composite core having good multiple absorption effect, fast absorption and diffusion speed, and high utilization rate, and a method for manufacturing the same.

[0005] A disposable nursing absorbent article provided by the present invention comprises a liquid permeable surface layer, a liquid impermeable bottom layer, and an absorbent core located between the liquid permeable surface layer and the liquid impermeable bottom layer, wherein the absorbent core has a main absorption region and a protective region, the weight of the absorbent core is 70-400 gsm, the weight of the polymer water-absorbing resin in the main absorption region in the absorbent core is 50-200 gsm, and in the absorbent core, the content of the polymer water-absorbing resin in the main absorption region is ≥95%, and the content of the polymer water-absorbing resin in the protective region is ≤5%. Optionally, there is also an upper fiber thin layer between the liquid permeable surface layer and the absorbent core, and the longitudinal and transverse dimensions of the upper fiber thin layer are greater than or equal to the longitudinal and transverse dimensions of the main absorption region.

[0006] According to a disposable nursing absorbent article provided by the present invention, the main absorption area is located in the middle of the absorption core in the horizontal and vertical directions, that is, the main absorption area is in the middle of the protection area in the horizontal and vertical directions. The width of the main absorption area is 40%-60% of the width of the absorption core, and more preferably, the width of the main absorption area is 45%-55% of the width of the absorption core; the length of the main absorption area is 35%-65% of the length of the absorption core, and more preferably, the length of the main absorption area is 40%-60% of the length of the absorption core.

[0007] According to a disposable nursing absorbent article provided by the present invention, in the main absorption area of ​​the absorbent core, the polymer water-absorbent resin in the upper half layer close to the liquid-permeable surface layer accounts for more than 90% of the polymer water-absorbent resin in the main absorption area, and the polymer water-absorbent resin in the lower half layer close to the liquid-impermeable bottom layer accounts for less than 10% of the polymer water-absorbent resin in the main absorption area.

[0008] According to the present invention, a method for manufacturing a disposable nursing absorbent article comprises the following steps: (1) a wood pulp pulverizer pulverizes a wood pulp roll into wood pulp fibers, the wood pulp fibers are driven by airflow to form a wood pulp fiber web in a wood pulp fiber forming bin, and the wood pulp fiber web is demolded onto a liquid-impermeable bottom film material continuously transmitted on a conveyor belt; (2) a positioning sowing technology is used to sow a polymer water-absorbent resin in a main absorption area on one side of the wood pulp fiber web, and no polymer water-absorbent resin is sown in a protective area around the main absorption area; (3) a pair of pressing rollers are used to press the wood pulp fibers. The fiber web is pressed, and the gap between the upper and lower rollers of a pair of pressure rollers is 2-5mm, and the gap between the upper and lower rollers is 40%-70% of the height of the fiber web; (4) a continuous liquid-permeable surface material is transmitted, and hot melt adhesive is sprayed on the side of the liquid-permeable surface material close to the absorbent core, and the liquid-permeable surface material is compounded to the absorbent core layer and the liquid-impermeable bottom material to form a continuous disposable care article; (5) a process of folding the continuous disposable care article in the width direction of the manufacturing direction, and then cutting it into single-piece disposable care articles, and folding it in the length direction. As an option, between the processes of step (2) and step (3), there can also be a process of bonding a fiber thin layer to the wood pulp fiber web.

[0009] According to a method for manufacturing a disposable nursing absorbent article provided by the present invention, specifically: in the process of step 2), the polymer in the polymer water-absorbing resin storage device is evenly spread on a uniformly running conveyor belt, and the conveyor belt is provided with an 8A area and an 8B area that alternately travel, wherein the 8A area can receive the polymer, and the 8B area is a hollow area, and the hollow area cannot receive the polymer. Through the operation of the conveyor belt, the polymer in the 8A area is added to the main absorption area of ​​the nursing article to achieve fixed-point spreading of the polymer. The 8A area is a rectangular groove with a groove depth of 1-5mm. A scraper is provided above the groove, and the distance between the scraper and the upper edge of the groove is 0-3mm. A polymer receiving device is provided below the conveyor belt, which can receive the polymer leaked from the 8B area and transport the collected polymer to the polymer storage device.

[0010] According to a manufacturing method of a disposable nursing absorbent article provided by the present invention, the spreading line speed: main line speed is 1:2-2.5. The length of area A on the conveyor belt is LA, the length of area B on the conveyor belt is LB, the length of the absorbent core in the manufacturing direction of the disposable nursing article is L0, and the length of the main absorption area is L1; then LA:LB=L1:(L0-L1).

[0011] A disposable care article provided by the present invention has the following advantages: (1) The polymer can be spread in the main absorption area, and there is basically no polymer in the protective area. The polymer has good uniformity in the main absorption area, and the size of the fixed-point spreading can be precisely controlled. The absorption amount of the main absorption area can be effectively increased. (2) It is conducive to uniform distribution of the polymer water-absorbing material on the wood pulp fiber, which is conducive to improving the uniformity of liquid absorption in various parts of the care article; it is conducive to making the polymer water-absorbing resin more evenly distributed on the wood pulp fiber; (3) The main absorption area of ​​the absorption core layer of the care article is uniformly filled with polymer water-absorbing resin, and the protective area has only a small amount or no polymer water-absorbing resin, which meets product requirements and effectively saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a disposable care article provided by the present invention; Figure 2 Figure 1 YY direction cross-sectional view; Figure 3 A schematic diagram of positioning and spreading in the method for preparing disposable care articles provided by the present invention; Figure 4 for Figure 3 Schematic diagram of part of the conveyor belt in the positioning spreading device; Figure 5 Figure 4 HH direction cross-sectional view on the conveyor belt; Figure 6 for Figure 4Cross-sectional view of the conveyor belt in the MM direction; Figure 7 for Figure 4 Cross-sectional view of the conveyor belt in the KK direction.

[0013] In the figure, 1 is a disposable care article, 2 is a liquid-permeable surface layer, 3 is an absorbent core layer, 3A is the upper part of the absorbent core layer, 3B is the lower part of the absorbent core layer, 3E is the main absorbent area of ​​the absorbent core layer, 3F is the protective area of ​​the absorbent core layer, 7 is a storage device, 8 is a conveyor belt, 8A is 9 is a recovery hopper, and 91 is a recovery pipe. DA is the groove width of the 8A area on the conveyor belt, DB is the hollow width of the 8B on the conveyor belt, LA is the length of the 8A area on the conveyor belt, and LB is the hollow length of the 8B on the conveyor belt. A disposable care article has a length of L0 in the manufacturing direction, and the length of the main absorbent area of ​​the absorbent core layer of the care article in the manufacturing direction is L1. Implementation

[0014] As used herein, the term "care article" refers to a device that absorbs and contains body exudates, and more specifically refers to a disposable care pad or the like that is placed on a bed to prevent body excretions from soiling bedding. As used herein, the term "disposable" refers to articles that are not intended to be washed, or restored, or reused as an absorbent article (i.e., they are designed to be discarded after a single use, preferably to be recycled, composted, or otherwise disposed of in an environmentally compatible manner).

[0015] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0016] like Figure 1-2 As shown, a disposable nursing absorbent article 1 provided by the present invention has a liquid permeable surface layer 2, a liquid impermeable bottom layer 4, and an absorbent core 3 located between the liquid permeable surface layer and the liquid impermeable bottom layer, the absorbent core 3 has a main absorbent region 3E and a protective region 3F, the main absorbent region is located in the middle of the absorbent core in the horizontal and vertical directions, and the width of the main absorbent region is 40%-60% of the width of the absorbent core, the length of the main absorbent region is 35%-65% of the length of the absorbent core, and the main absorbent region is in the middle of the protective region in the horizontal and vertical directions. It is more preferred that the width of the main absorbent region is 45%-55% of the width of the absorbent core, and the length of the main absorbent region is 40%-60% of the length of the absorbent core.

[0017] The liquid-permeable topsheet material 2 is compliant, soft-feeling, and non-irritating to the wearer's skin. Moreover, the liquid-permeable topsheet material 2 should be liquid-permeable so that liquids (e.g., urine, loose stools) can easily pass through its thickness. Applicable liquid-permeable topsheet material 21 can be made of a variety of materials, such as porous foam, cellular foam, perforated plastic film or natural fibers (e.g., wood fibers or cotton fibers), synthetic fibers (e.g., polyester fibers or polypropylene fibers) or woven or nonwoven webs of natural and synthetic fiber combinations. In some embodiments, the liquid-permeable topsheet material is made of hydrophobic material to isolate the wearer's skin from the liquid contained in the absorbent core 3.

[0018] Liquid-impermeable bottom material 4 is usually that part of the near absorbent core 3 of disposable care articles that faces the bed surface. Liquid-impermeable bottom material 4 can prevent the exudate absorbed and contained therein from being dirty and possibly contacting the articles of disposable absorbent articles, such as bed sheets. In some embodiments, liquid-impermeable bottom material 4 is substantially impermeable to liquid (such as urine), and liquid-impermeable bottom material can also be composed of more than one layer, wherein the outer layer of liquid-impermeable bottom material 4 (often referred to as backsheet) can be made of soft nonwoven material, and the inner layer of backsheet can be made of substantially impermeable film, such as a thermoplastic breathable film with a thickness of about 0.012mm to about 0.051mm. Adhesive or any other suitable material or method can be used to join the layers together. Other suitable backsheet materials can include breathable materials that allow water vapor to escape from disposable care articles 1 while also preventing exudate from penetrating liquid-impermeable bottom material 4. Exemplary breathable materials can include materials such as woven fiber webs, nonwoven fiber webs, and composite materials such as nonwoven fiber webs of film coating. While a variety of backsheet configurations are contemplated herein, it would be apparent to those skilled in the art that various other changes and modifications may be made.

[0019] The absorbent core layer 3 can be any absorbent component that is generally compressible, conformable, non-irritating to the wearer's skin, and capable of absorbing and retaining liquids such as urine and other certain body exudates. The absorbent core layer is generally made of various liquid-absorbing materials (such as crushed wood pulp, commonly known as air felt) used in disposable diapers and other absorbent products. Other embodiments of suitable absorbent materials include yarn-feeding cellulose fillers; melt-blown polymers, including co-formed, cross-linked cellulose fibers; tissues, including tissues and non-woven packaging materials and tissues and non-woven laminates; superabsorbent polymers; absorbent gelling materials; or any equivalent material or combination of materials. The gram weight of the absorbent core 3 is 70-400gsm, the weight of the polymer water-absorbing resin in the main absorption area in the absorbent core is 50-200gsm, and in the absorbent core, the content of the polymer water-absorbing resin in the main absorption area is ≥95%, and the content of the polymer water-absorbing resin in the protective area is ≤5%. In one specific embodiment, the gram weight of the wood pulp fiber web of the absorbent core layer is 70gsm, and the gram weight of the high molecular absorbent resin in the main absorption area is 50gsm, that is, the gram weight of the absorbent core layer in the main absorption area is 120gsm, and the gram weight of the protective area is 70gsm; in another specific embodiment, the gram weight of the wood pulp fiber web of the absorbent core layer is 100gsm, and the gram weight of the high molecular absorbent resin in the main absorption area is 70gsm, that is, the gram weight of the absorbent core layer in the main absorption area is 170gsm, and the gram weight of the protective area is 100gsm; in another specific embodiment, the gram weight of the wood pulp fiber web of the absorbent core layer is 200gsm, and the gram weight of the high molecular absorbent resin in the main absorption area is 100gsm, that is, the gram weight of the absorbent core layer in the main absorption area is 300gsm, and the gram weight of the protective area is 200gsm.

[0020] In the main absorption area of ​​the absorbent core, the polymer water-absorbent resin in the upper half layer close to the liquid-permeable surface layer accounts for more than 90% of the polymer water-absorbent resin in the main absorption area, and the polymer water-absorbent resin in the lower half layer close to the liquid-impermeable bottom layer accounts for less than 10% of the polymer water-absorbent resin in the main absorption area.

[0021] As an optional solution, there is a fiber mesh layer between the liquid-permeable surface layer and the absorbent core, and the longitudinal and transverse dimensions of the fiber mesh layer are greater than or equal to the longitudinal and transverse dimensions of the main absorption area, which is not shown in the figure.

[0022] The present invention also provides a method for manufacturing a disposable care article 1, comprising the following steps: (1) a wood pulp pulverizer pulverizes a wood pulp coil into wood pulp fibers, the wood pulp fibers are driven by airflow to form a wood pulp fiber web in a wood pulp fiber forming mold cavity, and the wood pulp fiber web is demolded onto a liquid-impermeable bottom film material sprayed with hot melt adhesive and continuously transmitted on a conveyor belt; (2) Figure 3As shown, a high molecular water-absorbent resin is spread on the main absorption area on one side of the wood pulp fiber web by using a positioning spreading technology, and the high molecular water-absorbent resin is not spread in the protective area around the main absorption area; (3) a pair of pressure rollers are used to apply pressure to the wood pulp fiber web, and the gap between the upper and lower rollers of the pair of pressure rollers is 2-5 mm, and the gap between the upper and lower rollers is 40%-70% of the height of the fiber web; as an option, the upper and lower rollers are used for heating and compacting to extrude regular embossing on the core body, and the temperature of the upper and lower rollers is controlled at 65-75 degrees Celsius; (4) a continuous liquid-permeable surface material is transmitted, and hot melt adhesive is sprayed on the side of the liquid-permeable surface material close to the absorbent core, and the liquid-permeable surface material is compounded to the absorbent core layer and the liquid-impermeable bottom layer material to form a continuous disposable care product; (5) a process of folding the continuous disposable care product in the width direction of the manufacturing direction, then cutting it into single-piece disposable care products, and folding it longitudinally.

[0023] like Figure 3-6 As shown, in the process of step 2), the polymer water-absorbing resin in the storage device 7 is evenly spread on the conveyor belt 8 running at a uniform speed. The conveyor belt 8 is provided with an 8A area and an 8B area that alternately travel, wherein the 8A area is provided with a rectangular groove, and the width DA of the groove on the conveyor belt is greater than the outlet width of the storage device 7, and the width DA of the groove on the conveyor belt is roughly the same as the width of the main absorption area of ​​the absorbent core layer in the disposable care article in the transmission direction of the host. The groove depth is 1-5mm, and the groove can bear the polymer. A scraper (not shown in the figure) is provided in front of the transmission direction of the outlet of the storage device 7. The distance between the scraper and the conveyor belt is 0-3mm. The width of the scraper can be slightly smaller than the width of the groove in the 8A area. The scraper can scrape the polymer water-absorbing resin added at the outlet of the storage device 7 flat and spread it evenly. By setting the depth of the groove in the 8A area and the distance between the scraper and the conveyor belt, the amount of the polymer water-absorbing resin in the groove can be preset, and then the specific amount of the high water-absorbing resin spread to the main absorption area of ​​the care article can be controlled. When the conveyor belt 8A area runs to the exit position of the storage device, the polymer water-absorbing resin is added to the groove of the conveyor belt 8A area. The polymer water-absorbing resin may be unevenly distributed in the groove, and may even accumulate. As the conveyor belt runs, the accumulated polymer in the groove is evenly distributed in the groove under the action of the scraper, avoiding the accumulation or uneven distribution of the polymer water-absorbing resin in the main absorption area of ​​the absorption core layer.

[0024] The polymer water-absorbent resin in the groove of the 8A area is transmitted forward by the conveyor belt until it reaches the position of the conveyor pulley, and is scattered in the wood pulp fiber web in the main absorption area of ​​the absorption core layer of the care product by free fall. Since the free fall is scattered in the fluffy wood pulp fiber web, most or even all of the polymer water-absorbent resin is added to the main absorption area position of the fluffy wood pulp fiber web (that is, 95-100% of the polymer water-absorbent resin is added to the main absorption area position of the wood pulp fiber web). Of course, there may be a small part of the polymer water-absorbent resin scattered in the wood pulp fiber web in the protection area outside the main absorption area. The amount of polymer water-absorbent resin scattered in the wood pulp fibers in the protection area is generally small. Only 0-5% of the polymer water-absorbent resin in the groove of the 8A area is scattered in the wood pulp fibers in the protection area. Most of the polymer water-absorbent resin scattered in the main absorption area of ​​the wood pulp fiber web can be scattered on the wood pulp fibers or in the upper half of the wood pulp fiber web, and a small part may fall into the lower half of the wood pulp fiber web through machine transmission, roller extrusion, etc. By utilizing the sanitary product production and preparation technology in the art and controlling the speed relationship between the conveyor belt and the main machine, the polymer water-absorbing resin in the groove of the 8A area can be evenly added to the main absorption area of ​​the absorbent core layer of the care product. Generally speaking, the main machine line speed of the machine for preparing disposable care products is 2-5 times the line speed of the polymer spreading conveyor belt.

[0025] Region 8B is a hollow region, which cannot receive polymer water absorbent. When polymer water absorbent resin is added to region 8B, the polymer water absorbent resin falls from the hollow region to the recovery hopper below the outlet of the storage device 7, and the polymer water absorbent resin can be added back to the storage device 7 through the pipeline.

[0026] The polymer in area A is added to the nursing pad through the operation of the conveyor belt, the length of area 8A on the conveyor belt is LA, the length of area 8B on the conveyor belt is LB, the length of a disposable nursing article in the manufacturing direction is L0, and the length of the main absorption area of ​​the absorption core layer of the nursing article in the manufacturing direction is L1; the main absorption area of ​​the absorption core layer of the disposable nursing article can be positioned and spread by controlling LA:LB=L1:(L0-L1). Example 2

[0027] In this embodiment, the present invention provides a disposable nursing absorbent article, which has a liquid-permeable surface layer, a liquid-impermeable bottom layer, and an absorbent core located between the liquid-permeable surface layer and the liquid-impermeable bottom layer, wherein the absorbent core has a main absorption area and a protective area, wherein the main absorption area is located in the middle of the absorbent core in the horizontal and vertical directions, and the width of the main absorption area is 40%-60% of the width of the absorbent core, and the length of the main absorption area is 35%-65% of the length of the absorbent core, and the main absorption area is in the middle of the horizontal and vertical directions of the protective area. More preferably, the width of the main absorption area is 45%-55% of the width of the absorbent core, and the length of the main absorption area is 40%-60% of the length of the absorbent core. The absorbent core layer is a fiber mesh layer of wood pulp fibers and high molecular water-absorbing resin sandwiched between the upper and lower layers of toilet paper or non-woven fabrics.

[0028] This embodiment also provides another method for manufacturing a disposable care article, comprising the following steps: (1) a wood pulp crusher crushes a wood pulp roll into wood pulp fibers, the wood pulp fibers are driven by airflow to form a wood pulp fiber web in a wood pulp fiber forming mold cavity, and the wood pulp fiber web is demolded onto a lower layer of toilet paper firmly adsorbed by negative pressure on a conveyor belt; (2) Figure 3 As shown, a high molecular water-absorbing resin is spread on the main absorption area on one side of the wood pulp fiber web by using a positioning spreading technology, and the high molecular water-absorbing resin is not spread in the protective area around the main absorption area; (3) a process of covering an upper layer of toilet paper on the wood pulp fiber web in step (2); (4) using a pressure roller to press the wood pulp fiber web on the toilet paper, the pressure roller is a pair of pressure rollers that cooperate with each other, the pressure height of the pair of pressure rollers is 50%-70% of the height of the fiber web, and the gap between the upper and lower rollers is generally 2-6mm; the upper roller and the lower roller are pressed together. The rollers can be heated and compacted at the same time to extrude regular embossing patterns on the core body, and the temperature of the upper roller and the lower roller is controlled at 65-75 degrees Celsius; (5) conveying a continuous liquid permeable surface material, spraying hot melt adhesive on the side of the liquid permeable surface material close to the absorbent core, and compounding the liquid permeable surface material to the absorbent core layer and the liquid impermeable bottom material to form a continuous disposable care product; (6) folding the continuous disposable care product in the width direction of the manufacturing direction, then cutting it into single-piece disposable care products, and folding it longitudinally.

[0029] The present invention is described in detail above with reference to the embodiments, but this does not constitute a limitation on the content of the present invention. Modifications and changes made under the same conception all belong to the protection scope of the present invention.

Claims

1. A disposable nursing absorbent article, comprising a liquid permeable surface layer, a liquid impermeable bottom layer, and an absorbent core located between the liquid permeable surface layer and the liquid impermeable bottom layer, the absorbent core having a main absorbent region and a protective region, the absorbent core weighing 70-400 gsm, characterized in that The weight of the high molecular water-absorbent resin in the main absorption area in the absorption core is 50-200 gsm, and in the absorption core, the content of the high molecular water-absorbent resin in the main absorption area is ≥95%, and the content of the high molecular water-absorbent resin in the protection area is ≤5%.

2. A disposable nursing absorbent article according to claim 1, characterized in that: The main absorption area is located in the middle of the absorption core in the horizontal and vertical directions, and the width of the main absorption area is 40%-60% of the width of the absorption core, and the length of the main absorption area is 35%-65% of the length of the absorption core. The main absorption area is in the middle of the protection area in the horizontal and vertical directions.

3. A disposable nursing absorbent article according to claim 1, characterized in that: The width of the main absorbent region is 45%-55% of the width of the absorbent core, and the length of the main absorbent region is 40%-60% of the length of the absorbent core.

4. A disposable nursing absorbent article according to claim 1, characterized in that: In the main absorption area of ​​the absorbent core, the polymer water-absorbent resin in the upper half layer close to the liquid-permeable surface layer accounts for more than 90% of the polymer water-absorbent resin in the main absorption area, and the polymer water-absorbent resin in the lower half layer close to the liquid-impermeable bottom layer accounts for less than 10% of the polymer water-absorbent resin in the main absorption area.

5. A disposable care absorbent article according to claim 1, characterized in that there is a fiber mesh layer between the liquid-permeable surface layer and the absorbent core, and the longitudinal and lateral dimensions of the fiber mesh layer are greater than or equal to the longitudinal and lateral dimensions of the main absorption area.

6. The method for manufacturing a disposable care article according to claim 1, characterized in that The following steps are involved: (1) A wood pulp crusher crushes the wood pulp roll into wood pulp fibers, which are driven by air flow to be formed into a wood pulp fiber web in a wood pulp fiber forming chamber, and the wood pulp fiber web is demolded onto a liquid-impermeable bottom film material continuously transmitted on a conveyor belt; (2) A high molecular water-absorbent resin is spread on the main absorption area on one side of the wood pulp fiber web by using a positioning sowing technology, and the high molecular water-absorbent resin is not spread on the protective area around the main absorption area; (3) A pair of pressure rollers applies pressure to the wood pulp fiber web, and the gap between the upper and lower rollers of the pair of pressure rollers is 2-5 mm, and the gap between the upper and lower rollers is 40%-70% of the height of the fiber web; (4) A continuous liquid-permeable surface material is transmitted, and hot melt adhesive is sprayed on the side of the liquid-permeable surface material close to the absorbent core, and the liquid-permeable surface material is composited to the absorbent core layer and the liquid-impermeable bottom material to form a continuous disposable care product; (5) A process of folding the continuous disposable care product in the width direction of the manufacturing direction, then cutting it into single-piece disposable care products, and folding it in the length direction.

7. A method for manufacturing a disposable care article according to claim 6, characterized in that: In the process of step 2), the polymer in the polymer absorbent resin storage device is evenly spread on the conveyor belt running at a uniform speed. The conveyor belt is provided with 8A area and 8B area which travel alternately. The 8A area can bear the polymer, and the 8B area is a hollow area which cannot bear the polymer. The polymer in the 8A area is added to the main absorption area of ​​the nursing pad through the operation of the conveyor belt to realize the fixed-point spreading of the polymer.

8. The method for manufacturing a disposable care article according to claim 7, characterized in that: In the process of step 2), area A is a rectangular groove with a groove depth of 1-5 mm. A scraper is provided above the groove, and the distance between the scraper and the upper edge of the groove is 0-3 mm.

9. The method for manufacturing a disposable care article according to claim 8, characterized in that: In the process of step 2), a polymer receiving device is provided below the conveyor belt to receive the polymer leaked from area B and transport the collected polymer to the polymer storage device.

10. The method for manufacturing a disposable care article according to claim 8, characterized in that: The length of area 8A on the conveyor belt is LA, the length of area 8B on the conveyor belt is LB, the length of a disposable care product in the manufacturing direction is L0, and the length of the main absorption area of ​​the absorption core layer of the care product in the manufacturing direction is L1, then LA:LB=L1:(L0-L1).

Images