CN216365572U - Composite core structure and absorption article - Google Patents

Abstract

The utility model provides a compound core structure and absorption articles for use, relate to absorption articles for use technical field, including first overburden, second overburden and the absorption core layer that is located between first overburden and the second overburden, the absorption core layer includes first super absorbent resin layer, first fluffy non-woven fabrics layer, the fluffy non-woven fabrics layer of second and the super absorbent resin layer of second, and setting is pressed close to first super absorbent resin layer and first overburden, still is provided with water-soluble film paper layer between the fluffy non-woven fabrics layer of first fluffy non-woven fabrics layer and second. This composite core structure and absorption articles for use can avoid being located the first super absorbent polymer on upper strata and fall to the lower floor to take place to mix with the second super absorbent polymer that is located the lower floor and use, thereby make first super absorbent polymer and second super absorbent polymer can be in presetting the position separately by make full use of, and then improve absorption effect and diffusion rate.

Description

Composite core structure and absorption article

Technical Field

The utility model relates to the technical field of absorption articles, in particular to a composite core body structure and an absorption article.

Background

Infants and other individuals of particular need often wear disposable absorbent articles to contain and isolate the excretions of the wearer from the body and clothing or bedding of the wearer. Disposable absorbent articles, such as diapers, are typically comprised of a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent core disposed between the liquid permeable topsheet and the liquid impermeable backsheet to absorb and contain liquid.

The absorbent core in the prior art generally comprises a first cover layer, a first super absorbent resin layer, a high bulky nonwoven fabric layer, a second super absorbent resin layer, and a second cover layer. Due to the limitation of the production process, in the molding process, the manufacturing and conveying process of the core body manufacturer, the manufacturing and conveying process of the paper diaper manufacturer and the using process of consumers of the absorbent core material with the structure, a large amount of first super absorbent polymer positioned on the upper layer inevitably falls to the lower layer, so that the first super absorbent polymer positioned on the upper layer and the second super absorbent polymer positioned on the lower layer are mixed, the first super absorbent polymer remained on the upper layer cannot meet the use requirement, and finally, the phenomenon of urine leakage or hip redness of the wearer is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a composite core structure and an absorption article, which can prevent a first super absorbent polymer positioned on an upper layer from falling to a lower layer and mixing with a second super absorbent polymer positioned on a lower layer, so that the first super absorbent polymer and the second super absorbent polymer can be fully utilized at respective preset positions, and the absorption effect and the diffusion rate are further improved.

The embodiment of the utility model is realized by the following steps:

in one aspect of the embodiments of the present invention, a composite core structure is provided, which includes a first cover layer, a second cover layer, and an absorbent core layer located between the first cover layer and the second cover layer, where the absorbent core layer includes a first super absorbent resin layer, a first bulky nonwoven fabric layer, a second bulky nonwoven fabric layer, and a second super absorbent resin layer, the first super absorbent resin layer and the first cover layer are disposed close to each other, and a water-soluble film paper layer is further disposed between the first bulky nonwoven fabric layer and the second bulky nonwoven fabric layer. This composite core structure can avoid being located the first super absorbent polymer on upper strata and fall to the lower floor to take place to mix with the second super absorbent polymer that is located the lower floor and use, thereby make first super absorbent polymer and second super absorbent polymer can be in presetting the position separately by make full use of, and then improve absorption effect and diffusion rate.

Optionally, the raw materials of the water-soluble film paper layer comprise polyvinyl alcohol, polyhydroxy plasticizer, thiourea, surface tension regulator, mildew preventive, slipping agent and film forming aid.

Optionally, a first hot melt adhesive layer is respectively disposed between the first fluffy non-woven fabric layer and the water-soluble film paper layer, and between the water-soluble film paper layer and the second fluffy non-woven fabric layer.

Optionally, a second hot melt adhesive layer is respectively disposed between the first cover layer and the absorbent core layer and between the absorbent core layer and the second cover layer.

Optionally, the cover sheet further comprises a sewing layer distributed along an edge of the first cover layer, and the first cover layer and the second cover layer are fixedly connected through the sewing layer.

Optionally, the width of the suture layer is between 2mm and 5 mm.

Optionally, the raw material of the first bulky nonwoven layer and the second bulky nonwoven layer includes ES fibers.

Optionally, the ES fibers have a count between 2D and 6D.

Optionally, the first cover layer and the second cover layer are both dust-free paper or nonwoven fabric.

In another aspect of the embodiments of the present invention, an absorbent article is provided, which includes the composite core structure described above. This composite core structure can avoid being located the first super absorbent polymer on upper strata and fall to the lower floor to take place to mix with the second super absorbent polymer that is located the lower floor and use, thereby make first super absorbent polymer and second super absorbent polymer can be in presetting the position separately by make full use of, and then improve absorption effect and diffusion rate.

The embodiment of the utility model has the beneficial effects that:

the composite core structure comprises a first covering layer, a second covering layer and an absorption core layer positioned between the first covering layer and the second covering layer, wherein the absorption core layer comprises a first high-water-absorptivity resin layer, a first fluffy non-woven fabric layer, a second fluffy non-woven fabric layer and a second high-water-absorptivity resin layer, the first high-water-absorptivity resin layer and the first covering layer are arranged in a closed mode, and a water-soluble film paper layer is further arranged between the first fluffy non-woven fabric layer and the second fluffy non-woven fabric layer. The water-soluble film paper layer is implanted between the first fluffy non-woven fabric layer and the second fluffy non-woven fabric layer, the first super absorbent resin layer and the second super absorbent resin layer can be effectively isolated, the first super absorbent resin positioned on the upper layer can be prevented from falling to the lower layer, and the first super absorbent resin and the second super absorbent resin positioned on the lower layer are mixed, so that the first super absorbent resin and the second super absorbent resin can be fully utilized at respective preset positions, and the absorption effect and the diffusion rate are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is one of the schematic structural diagrams of a composite core structure provided by embodiments of the present invention;

fig. 2 is a second schematic structural diagram of a composite core structure according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of a composite core structure according to an embodiment of the present invention.

Icon: 1-a first cover layer; 2-a second cover layer; 3-a first superabsorbent resin layer; 4-a second superabsorbent resin layer; 5-a first lofty nonwoven layer; 6-a second fluffy non-woven layer; 7-a water-soluble film paper layer; 8-an absorbent core layer; 9-a wrapping layer; 10-a suture layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, the present embodiment provides a composite core structure, which includes a first cover layer 1, a second cover layer 2, and an absorbent core layer 8 located between the first cover layer 1 and the second cover layer 2, wherein the absorbent core layer 8 includes a first super absorbent resin layer 3, a first bulky nonwoven fabric layer 5, a second bulky nonwoven fabric layer 6, and a second super absorbent resin layer 4, the first super absorbent resin layer 3 and the first cover layer 1 are disposed close to each other, and a water-soluble film paper layer 7 is further disposed between the first bulky nonwoven fabric layer 5 and the second bulky nonwoven fabric layer 6. This composite core structure can avoid being located the first super absorbent polymer on upper strata and fall to the lower floor to take place to mix with the second super absorbent polymer that is located the lower floor and use, thereby make first super absorbent polymer and second super absorbent polymer can be in presetting the position separately by make full use of, and then improve absorption effect and diffusion rate.

It should be noted that the water-soluble film paper layer 7 is embedded between the first bulky nonwoven fabric layer 5 and the second bulky nonwoven fabric layer 6, so as to effectively isolate the first super absorbent resin layer 3 and the second super absorbent resin layer 4, and prevent the first super absorbent resin on the upper layer from falling to the lower layer and mixing with the second super absorbent resin on the lower layer, so that the first super absorbent resin and the second super absorbent resin can be fully utilized at their respective preset positions.

Because the water-soluble film paper can be quickly dissolved in water and can be completely dissolved, no sediment dirt or turbidity is generated after the water-soluble film paper is dissolved in water, and the absorption and free expansion spaces of the first super absorbent resin and the second super absorbent resin are not restricted, the water-soluble film paper layer 7 is implanted between the first fluffy non-woven fabric layer 5 and the second fluffy non-woven fabric layer 6, and the absorption effect and the diffusion rate of the composite core structure cannot be influenced. Instead, the absorption effect and diffusion rate of the composite core structure can be improved because the first superabsorbent polymer and the second superabsorbent polymer can be fully utilized at the respective predetermined positions.

It should be noted that the upper layer and the lower layer are distinguished from each other by the first super absorbent resin layer 3 and the second super absorbent resin layer 4 (or the first super absorbent resin and the second super absorbent resin) only in the placement manner commonly used for the composite core structure, and are not used to indicate that the positional relationship between the first super absorbent resin layer 3 and the second super absorbent resin layer 4 is absolute.

As described above, the composite core structure includes the first cover layer 1, the second cover layer 2, and the absorbent core layer 8 located between the first cover layer 1 and the second cover layer 2, the absorbent core layer 8 includes the first high water absorbent resin layer 3, the first bulky nonwoven fabric layer 5, the second bulky nonwoven fabric layer 6, and the second high water absorbent resin layer 4, the first high water absorbent resin layer 3 and the first cover layer 1 are disposed in close proximity, and the water-soluble film paper layer 7 is further disposed between the first bulky nonwoven fabric layer 5 and the second bulky nonwoven fabric layer 6. The water-soluble film paper layer 7 is implanted between the first fluffy non-woven fabric layer 5 and the second fluffy non-woven fabric layer 6, so that the first super absorbent resin layer 3 and the second super absorbent resin layer 4 can be effectively isolated, the first super absorbent resin positioned on the upper layer can be prevented from falling to the lower layer, and the first super absorbent resin and the second super absorbent resin positioned on the lower layer are mixed, so that the first super absorbent resin and the second super absorbent resin can be fully utilized at respective preset positions, and the absorption effect and the diffusion rate are further improved.

Optionally, the raw materials of the water-soluble film paper layer 7 comprise polyvinyl alcohol, polyhydroxy plasticizer, thiourea, surface tension regulator, mildew preventive, slipping agent and film forming aid.

It should be noted that, when preparing the water-soluble film paper layer 7, the above raw materials need to be added into water to be completely dissolved, then the dissolved product is dried to form a film, and finally the water-soluble film paper can be prepared through a paper forming process. It should be noted that, in the step of adding the raw materials into water to be completely dissolved, there is no requirement for the order of adding the raw materials, and all the raw materials are added into water together to be completely dissolved.

Optionally, a first hot melt adhesive layer is respectively arranged between the first fluffy non-woven fabric layer 5 and the water-soluble film paper layer 7, and between the water-soluble film paper layer 7 and the second fluffy non-woven fabric layer 6. Wherein the water-soluble film paper layer 7 can be fixed between the first fluffy non-woven fabric layer 5 and the second fluffy non-woven fabric layer 6 through hot melting during the actual production process.

Optionally, a second hot melt adhesive layer is respectively disposed between the first cover layer 1 and the absorbent core layer 8 and between the absorbent core layer 8 and the second cover layer 2.

It should be noted that the first cover layer 1 and the absorbent core layer 8, and the absorbent core layer 8 and the second cover layer 2 may be fixed by hot melting of an adhesive, the adhesive may be sprayed by a glue machine, the spraying process may be "Ω", "spiral" or "fiber spraying", and the form after hot melting of the adhesive is the second hot melt glue layer.

Referring to fig. 3, the composite core structure may further include a seam layer 10, wherein the seam layer 10 is distributed along an edge of the first cover layer 1, and the first cover layer 1 and the second cover layer 2 are fixedly connected by the seam layer 10.

It should be noted that the seam layer 10 can be formed by "hot rolling" or "ultrasonic" process, so as to wrap the first super absorbent resin and the second super absorbent resin inside by the cooperation of the first covering layer 1, the second covering layer 2 and the seam layer 10, thereby preventing the first super absorbent resin and the second super absorbent resin from leaking out of the side edges of the composite core structure.

Optionally, the width of the suture layer 10 is between 2mm and 5 mm. Regarding the actual width of the seam layer 10, those skilled in the art should be able to make reasonable choices and designs according to the actual situation, and no particular limitation is made here. Illustratively, the width of the suture layer 10 is 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, or 5mm, etc.

When the width of the seam layer 10 is less than 2mm, there may be a risk that the seam is not firm and is easy to crack due to the narrow width of the seam layer 10, so that the first and second super absorbent resins may leak from the front, rear, left or right sides of the composite core structure, and finally cause quality accidents of the product; when the width of the seam layer 10 is greater than 5mm, the seam layer 10 may occupy a certain effective use area due to its wide width, which results in a small effective use area that can be covered by the first and second super absorbent resins, and finally causes the user's excrement to be absorbed in an untimely manner.

It should be noted that the width of the seam layer 10 may be equal or unequal along the length and width of the composite core structure, and those skilled in the art should be able to make reasonable selection and design according to the actual situation, and is not limited herein.

Alternatively, the raw material of the first bulky nonwoven layer 5 and the second bulky nonwoven layer 6 includes ES fibers.

It should be noted that ES is an abbreviation of "Ethylene-Propylene Side By Side", and the ES fiber is a bicomponent sheath-core structure composite fiber, and has a low melting point and good flexibility in the sheath tissue, and a high melting point and high strength in the core tissue. After the ES fiber is subjected to heat treatment, one part of the skin layer is melted to play a role in bonding, and the other part of the skin layer still keeps a fiber state and has the characteristic of small heat shrinkage rate, so that the ES fiber is particularly suitable for being used as a hot air penetration process for producing products such as sanitary materials, warm-keeping fillers, filtering materials and the like.

Optionally, the ES fibers have a count between 2D and 6D. Regarding the actual number of ES fibers, those skilled in the art should be able to make reasonable selection and design according to the actual situation, and no particular limitation is made herein. Illustratively, the number of ES fibers is 2D, 3D, 4D, 5D, or 6D, etc.

It is to be noted that the softness and bulkiness of the first and second bulky nonwoven layers 5 and 6 are both affected by the fiber count, and the smaller the fiber count, the better the softness and bulkiness. Therefore, the ES fiber can also be selected from 1.2D or 1.5D superfine fiber without considering the production cost.

Optionally, both the first cover layer 1 and the second cover layer 2 are dust-free paper or nonwoven.

It should be noted that Airlaid Paper (airlad Paper), also called dry-process papermaking nonwoven fabric (airlad pulp nonwoven), is one of the dry-process nonwoven fabrics. The dust-free paper has unique physical properties, is high in elasticity, soft, excellent in hand feeling and drapability, extremely high in water absorption and good in water retention performance, and is widely applied to the fields of health care products, special medical products, industrial wiping products and the like.

Non-woven fabrics (Non-woven fabrics), also called Non-woven fabrics, needle-punched cotton, needle-punched Non-woven fabrics and the like, are produced by adopting polyester fibers and polyester fibers (PET) materials and are manufactured by a needle-punching process, and can be made into fabrics with different thicknesses, hand feeling, hardness and the like. The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, flame retardance, no toxicity, no odor, low price, recycling and the like, and is widely applied to industries of sound insulation, heat insulation, electric heating sheets, masks, clothes, medical use, filling materials and the like.

The present application also provides an absorbent article. The absorbent article provided by this embodiment includes the wrapping layer 9 and the composite core structure described above, so that the composite core structure is wrapped by the wrapping layer 9. Since the structure and advantageous effects of the composite core structure have been described in detail in the foregoing embodiments, no further description is given here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The composite core structure is characterized by comprising a first covering layer, a second covering layer and an absorption core layer positioned between the first covering layer and the second covering layer, wherein the absorption core layer comprises a first high-water-absorptivity resin layer, a first fluffy non-woven fabric layer, a second fluffy non-woven fabric layer and a second high-water-absorptivity resin layer, the first high-water-absorptivity resin layer and the first covering layer are arranged in a close mode, and a water-soluble film paper layer is further arranged between the first fluffy non-woven fabric layer and the second fluffy non-woven fabric layer.

2. The composite core structure of claim 1, wherein a first layer of hot melt adhesive is disposed between the first lofty nonwoven layer and the water-soluble film paper layer and between the water-soluble film paper layer and the second lofty nonwoven layer.

3. The composite core structure according to claim 1, wherein a second layer of hot melt adhesive is provided between the first cover layer and the absorbent core layer and between the absorbent core layer and the second cover layer, respectively.

4. The composite core structure of claim 1, further comprising a stitching layer distributed along an edge of the first cover layer, the first cover layer and the second cover layer being fixedly connected by the stitching layer.

5. The composite core structure of claim 4, wherein the stitching layer has a width of between 2mm and 5 mm.

6. The composite core structure of claim 1 wherein the raw material of the first lofty nonwoven layer and the second lofty nonwoven layer comprises ES fibers.

7. A composite core structure according to claim 6, wherein the ES fibres have a count between 2D and 6D.

8. The composite core structure of claim 1, wherein the first cover layer and the second cover layer are both dust free paper or nonwoven.

9. An absorbent article comprising the composite core structure of any of claims 1-8.

Images