CN113171233B

CN113171233B - Composite core and disposable absorption article

Info

Publication number: CN113171233B
Application number: CN202110445102.4A
Authority: CN
Inventors: 夏双印; 陈广岩; 刘立坚; 沈欢
Original assignee: Shanghai Foliage Industry Co ltd
Current assignee: Shanghai Foliage Industry Co ltd
Priority date: 2021-04-24
Filing date: 2021-04-24
Publication date: 2022-06-03
Anticipated expiration: 2041-04-24
Also published as: CN113171233A

Abstract

The embodiment of the invention provides a composite core body which is detachably connected to a body of a disposable absorbent article and comprises a plurality of sub-core bodies which are arranged in a stacking way, the outer contours of the sub-core bodies are sequentially reduced from bottom to top, and the adjacent sub-core bodies are detachably connected, so that on one hand, the sub-core bodies positioned on the upper layer can form a protection effect on the sub-core bodies positioned on the lower layer to prevent the sub-core bodies positioned on the lower layer from being polluted when not used, on the other hand, the sub-core bodies positioned on the upper layer have smaller outer contours, are particularly suitable for small-area and small-volume absorbers for women, large absorbers are used at night or are suitable for the situation that the amount of the absorbers is gradually increased to be replaced and used gradually, and on the other hand, the outer contours of the sub-core bodies are sequentially reduced from bottom to top, so that the whole composite core body is in a frustum or frustum shape and can be more attached to a human body, especially, the shape of the crotch part does not cause discomfort in use.

Description

Composite core and disposable absorption article

Technical Field

The invention relates to a composite core and a disposable absorption article.

Background

The use of the ease trousers that supply women to use at present is also more and more common, supply women to use in menstrual period, but in the in-service use, because the volume of possible menses is less daytime, change this moment promptly, use cost is very high, therefore in the in-service use, some women can attach daily sanitary towel in the ease trousers, change promptly after using daytime, practice thrift use cost on the one hand, on the other hand sanitary towel and ease trousers constitute dual protection jointly, use more ease to women, but still need change the sanitary towel under this kind of condition, and because connecting pieces such as the gum of sanitary towel probably cause the damage to the surface course of ease trousers, cause the inconvenience of use at last.

Disclosure of Invention

Therefore, the invention provides a composite core and a disposable absorption article to solve the technical problems.

The utility model provides a composite core body, composite core body detachable be connected to on the body of disposable absorption articles for use, including a plurality of sub-cores of range upon range of setting, it is a plurality of the outline of sub-core reduce from bottom to top in proper order, adjacent sub-core can dismantle the connection.

Further, a plurality of the sub-cores comprise a first sub-core, a second sub-core and a third sub-core from bottom to top, the sub-cores comprise a surface layer, an absorption layer and a bottom layer, the bottom layer of the first sub-core is provided with an adhesive layer for adhering to the body of the disposable absorption article, the first sub-core and the second sub-core are connected with each other, and the second sub-core and the third sub-core are detachably connected with each other.

Further, an adhesive layer is arranged between the first sub-core and the second sub-core, an adhesive layer is arranged between the second sub-core and the third sub-core, the adhesive force between the adhesive layer arranged between the first sub-core and the second sub-core and the bottom layer of the second sub-core is greater than the adhesive force between the adhesive layer arranged between the third sub-core and the second sub-core and the bottom layer of the third sub-core, and the adhesive force between the adhesive layer arranged between the third sub-core and the second sub-core and the bottom layer of the third sub-core is greater than the adhesive force between the adhesive layer and the surface layer of the second sub-core.

Furthermore, the third sub-core body bottom layer and the second sub-core body surface layer are connected in an ultrasonic welding mode, and at least two connecting areas are arranged between the third sub-core body bottom layer and the second sub-core body surface layer.

Further, the first sub-core body further comprises a covering sheet, at least one part of the covering sheet is covered on the first sub-core body surface layer, and the second sub-core body is detachably connected to the covering sheet.

Furthermore, the covering sheet can be arranged on the first sub-core body in a foldable manner or detachably arranged on the first sub-core body.

Furthermore, an adhesive layer is arranged on the covering sheet and used for connecting the first sub-core body and the second sub-core body through the adhesive layer, and the adhesive force between the adhesive layer arranged on the covering sheet and the covering sheet is larger than the adhesive force between the adhesive layer and the bottom layer of the second sub-core body.

Furthermore, the covering sheet can be arranged on the first sub-core body in a foldable manner, and the covering sheet and the bottom layer of the first sub-core body are integrally formed.

Further, the covering sheet comprises a first sheet and a second sheet which are stacked, wherein the first sheet and the bottom layer of the first sub-core body are integrally formed, and the second sheet and the surface layer of the first sub-core body are integrally formed.

The invention also provides a disposable absorption article which comprises a body and the composite core body, wherein the body comprises a groove part for accommodating the composite core body.

Has the advantages that: the embodiment of the invention provides a composite core body which is detachably connected to a body of a disposable absorption article and comprises a plurality of sub-core bodies which are arranged in a laminating way, the outer contours of the sub-core bodies are sequentially reduced from bottom to top, and the adjacent sub-core bodies are detachably connected, on one hand, because the sub-core bodies are in a laminating state, the sub-core body positioned on the upper layer can form a protection effect on the sub-core body positioned on the lower layer, and the sub-core body positioned on the lower layer is prevented from being polluted when not used, on the other hand, the outer contour of the sub-core body positioned on the upper layer is less, the composite core body is particularly suitable for a small-area small-volume absorption body which is used for a large absorption body at night or is suitable for the situation that the amount is gradually increased and is gradually replaced for use, and on the third hand, because the outer contours of the sub-core bodies are sequentially reduced from bottom to top, the whole composite core body is in a frustum or frustum pyramid shape, and can be more attached to a human body, especially the shape of the crotch part, does not cause discomfort in use.

Drawings

FIG. 1 is a perspective view of a composite core of a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of a disposable absorbent article according to a first embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view at A-A of a composite core of a second embodiment;

FIG. 5 is an expanded view of a first sub-core of the composite core of the second embodiment;

FIG. 6 is an expanded perspective view of a first sub-core of the composite core of the second embodiment;

FIG. 7 is a schematic cross-sectional view at A-A of a composite core of a third embodiment.

Description of the illustrated elements:

a composite core 10; the

first sub-core

11, 31;

bottom layers

111, 131, 311, 321; an absorbent layer 112,312,322; facings 113,123, 313, 323; the

second sub-core

12, 32; a third sub-core 13; adhesive layers 14, 15,315, 316; a body 20; a groove portion 22; the

first surface

21, 41; a coverage area 310; the

covering sheets

314, 414; the tab 317.

Detailed Description

Referring now to fig. 1-2 in combination, fig. 1 illustrates the construction of a composite core 10 provided in accordance with a first embodiment of the present application, and fig. 2 illustrates a schematic cross-sectional view taken at a-a of fig. 1, with reference to which the present application will be further described.

The composite core 10 is detachably connected to the body 20 of the disposable absorbent article, and is used in cooperation with the body 20 of the disposable absorbent article to complete absorption of body fluid, and the composite core 10 comprises a plurality of sub-cores which are arranged in a stacked mode.

In this embodiment, the plurality of sub-cores include a first sub-core 11, a second sub-core 12 and a third sub-core 13 from bottom to top, wherein the first sub-core 11 is close to one side of the disposable absorbent article and is connected to the disposable absorbent article through the first sub-core 11, the outer contours of the first sub-core 11, the second sub-core 12 and the third sub-core 13 are similar and all in a bone shape, and the outer contours of the sub-cores are sequentially reduced from bottom to top, so that the entire composite core 10 is in a frustum shape or a prismoid shape. It is understood that the number of the sub-cores may be two, four or more, and is not limited to three in the present embodiment, and the outer contours of the sub-cores may have other shapes, such as oval, rectangle, etc., and the shapes of the sub-cores may not be similar at the same time, as long as the outer contours thereof decrease from bottom to top.

The adjacent sub-cores are detachably connected, so that the sub-core positioned at the upper layer can be easily peeled off from the adjacent sub-core at the lower layer, in this embodiment, the third sub-core 13 is positioned at the uppermost layer, and is detachably connected to the second sub-core 12, the second sub-core 12 is detachably connected to the first sub-core 11, when the composite core 10 is used, the third sub-core 13 having the smallest outer contour is used first, when the third sub-core 13 is used, the third sub-core 13 is peeled off from the second sub-core 12, so that the second sub-core 12 is exposed, and body fluid can be received and absorbed by the second sub-core 12, after the second sub-core 12 is used, the second sub-core 12 is peeled off from the first sub-core 11, the first sub-core 11 is exposed, so that the first sub-core 11 is peeled off from the body 20 after the first sub-core 11 is used, realize the change of composite core 10, realize the used repeatedly of body 20, it can be seen that, when using the composite core 10 of this embodiment, on the one hand because a plurality of sub-cores are the range upon range of state for the sub-core that is located the upper strata can form the guard action to the sub-core of lower floor, prevent that the sub-core of lower floor from being contaminated when not using, on the other hand the outline that is located the sub-core of upper strata is less, and the specially adapted women is few in the daytime, uses the small-size absorber, uses big absorber night, or is applicable to the situation that the volume increases gradually, uses gradually, and on the third hand because the outline of each sub-core reduces from bottom to top in proper order, makes whole composite core 10 be frustum or terrace with edge form, can more laminate in the human body, especially the form of crotch portion, can not cause the use discomfort.

In addition, it can be understood that the third sub-wick 13 is located in the middle of the second sub-wick 12, and the second sub-wick 12 is located in the middle of the first sub-wick 11, and in a preferred embodiment, the first sub-wick 11, the second sub-wick 12 and the third sub-wick 13 include a first region corresponding to the liquid outflow position, and the first regions of the first sub-wick 11, the second sub-wick 12 and the third sub-wick 13 are correspondingly arranged.

In this embodiment, the first sub-core 11 includes a surface layer 113, an absorption layer 112 and a bottom layer 111, wherein the bottom layer 111 is attached to one side of the body 20 and detachably connected to the body 20, the surface layer 113 is the side facing the outflow position of the body fluid, and the absorption layer 112 is sandwiched between the surface layer 113 and the bottom layer 111 for absorbing the body fluid.

Generally, the surface layer 113 is made of a low-irritation and soft sheet material, such as gauze, cotton cloth, spunlace nonwoven fabric, or hot air nonwoven fabric with a unit area weight of 10-60 g/m2, the bottom layer 111 is made of a sheet material with water repellency, such as PE film, SMS, or the like, the absorbent layer 112 is a porous network structure made of absorbent fibers, such as natural fluff pulp fibers, straw pulp fibers, or artificial fibers, such as viscose fibers, or the like, and preferably, super absorbent materials, such as SAP, or the like, can be further disposed in the absorbent layer 112 to further increase the absorption capacity.

The third sub-core 13 and the second sub-core 12, and the second sub-core 12 and the first sub-core 11 are detachably connected, specifically, the third sub-core 13 and the second sub-core 12, and the second sub-core 12 and the first sub-core 11 are connected by bonding, fusing, ultrasonic welding, and laminating.

In this embodiment, the adhesive layer 15 is disposed between the bottom layer 131 of the third sub-core 13 and the surface layer 123 of the second sub-core 12, and the third sub-core 13 is adhered to the second sub-core 12 by the adhesive, it can be understood that the adhesive force between the adhesive layer 15 and the bottom layer 131 of the third sub-core 13 is greater than the adhesive force between the adhesive layer 15 and the surface layer 123 of the second sub-core 12, so that when the third sub-core 13 is peeled off from the second sub-core 12, the adhesive layer 15 is adhered to the bottom layer 131 of the third sub-core 13 and is peeled off along with the third sub-core 13, but does not remain on the surface layer 123 of the second sub-core 12 to affect the subsequent use, and similarly, the adhesive layer 14 may be disposed between the second sub-core 12 and the first sub-core 11.

Further, the adhesive force between the adhesive layer 15 and the second sub-core 12 is less than 200 gf/inch (180 ° peel) so that the surface layer 123 of the second sub-core 12 is not damaged when the third sub-core 13 is peeled from the second sub-core 12.

In a preferred embodiment, the adhesive layer 15 includes a plurality of spaced-apart bonding regions, each having an area smaller than or equal to 5mm, and the spaced-apart distance between adjacent bonding regions is greater than or equal to 0.5mm, so that when the third sub-core 13 is peeled off, each bonding region will be peeled off individually, thereby reducing the damage to the surface layer 123 of the second sub-core 12 during peeling off, and preferably, the bonding regions are arranged in an array.

In another embodiment, the bottom layer 131 of the third sub-core body 13 and the surface layer 123 of the second sub-core body 12 are connected by ultrasonic welding, and preferably, at least two connecting regions formed by ultrasonic welding are included between the bottom layer 131 of the third sub-core body 13 and the surface layer 123 of the second sub-core body 12, the two connecting regions are respectively arranged at two sides of the third sub-core body 13 to realize stable connection to the second sub-core body 12, and more preferably, the connecting regions are four, and the four connecting regions are respectively arranged at four corners of the third sub-core body 13.

Preferably, the area of said connecting region is equal to or less than 25 mm.

Referring to fig. 3, fig. 3 is a schematic view showing the composite core 10 of the first embodiment attached to the main body 20 of the disposable absorbent article, wherein the main body 20 comprises a surface layer, an absorbent layer and a bottom layer which are stacked, the surface layer comprises a first surface 21, and the composite core 10 is detachably attached to the first surface 21 of the surface layer.

It is understood that the composite core 10 may be detachably connected to the main body 20 by bonding, ultrasonic welding, laminating, etc., and in this embodiment, the bottom layer 111 of the first sub-core 11 is provided with an adhesive layer, and is bonded to the surface layer of the main body 20 by the adhesive.

Further, the body 20 further includes a groove portion 22, the groove portion 22 includes a groove recessed toward the bottom layer of the body 22 for accommodating the composite core 10, so that when the composite core 10 is fixed on the body 20, the composite core does not protrude too high, which causes inconvenience in use, preferably, the depth of the groove is greater than or equal to the thickness of the first sub-core 11, so that the groove portion 22 can completely accommodate the first sub-core 11.

Referring to fig. 4, 5 and 6, fig. 4-6 respectively show the structure of the corresponding position of the composite core in the second embodiment, the composite core includes a first sub-core 31 and a second sub-core 32, wherein the second sub-core 32 is stacked above the first sub-core 31, and the outer profile of the second sub-core 32 is smaller than the outer profile of the first sub-core 31.

The first sub-core 11 includes a surface layer 313, an absorption layer 312, and a bottom layer 311, which are stacked, wherein an adhesive layer 315 is disposed on the bottom layer 311 for adhering to the first surface 41 of the body by an adhesive.

In the embodiment, the second sub-core 32 includes a surface layer 323, an absorption layer 322 and a bottom layer 321, an adhesive layer 316 is disposed between the covering sheet 314 and the bottom layer 321, and the bottom layer 321 and the covering sheet 314 are adhered by the adhesive layer 316, so that the second sub-core 32 is detachably connected to the covering sheet 314, in which case, the second sub-core 32 is not directly connected to the surface layer 313 of the first sub-core 31, and when the second sub-core 32 is peeled off from the first sub-core 31, the surface layer 313 of the first sub-core 31 will not be damaged or adhesive residue will not be formed on the surface layer 313 of the first sub-core 31.

Further, the covering sheet 314 is arranged on the first sub-core body 31 in a foldable manner, specifically, the covering sheet 314 includes a connection end connected to the first sub-core body 31 and a free end far away from the connection end, the free end can move towards the direction of the attachment surface 313 or be folded towards the direction of the first surface 41 under the limitation of the connection end, when the free end is attached to the surface 313, the covering sheet 314 shields the area corresponding to the covering sheet 314 on the surface 313 to form a covering area 310, it can be understood that, in the covering area 310, due to the shielding effect of the covering sheet 314, external pollution can be effectively prevented, meanwhile, before the second sub-core body 32 is not peeled off, the second sub-core body 32 is fixed on the covering sheet 314, the second sub-core body 32 also shields the surface 313 corresponding to the second sub-core body 32, so that under the protection of the covering sheet 314 and the second sub-core body 32, the covering sheet 314 and the corresponding area of the second sub-core 32 are prevented from being contaminated, and after the second sub-core 32 is peeled off, the covering sheet 314 is folded to expose the covering area 310, thereby forming a larger absorption area.

Preferably, the covering sheet 314 completely covers the area between the first sub-core 31 and the second sub-core 32, so that the covering sheet 314 and the second sub-core 32 can completely protect the first sub-core 31.

Preferably, the adhesive force between the adhesive layer 316 disposed on the covering sheet 314 and the covering sheet 314 is larger than the adhesive force between the adhesive layer 316 and the backsheet 321, so that when the second sub-core 32 is peeled off, the adhesive layer 316 can be held on the covering sheet 314, after the covering sheet 314 is folded, the covering sheet 314 is attached to the first surface 41, the covering sheet 314 can be continuously fixed to the first surface 41 by the adhesive layer 316, and a more stable connection structure is formed for the first sub-core 31 by the adhesive layers (315, 316).

Preferably, the bottom layer 321 of the second sub-core 32 is made of a low surface tension material or takes a measure to reduce the surface tension, such as the second sub-core 32 is made of release paper or release film, or the bottom layer 321 is coated with a low surface tension material such as silicone oil, so that the second sub-core 32 can be easily peeled off from the covering sheet 314 without an adhesive adhering to the bottom layer 321.

Further, the covering sheet 314 is integrally formed with the bottom sheet 311 of the first sub-core 31, that is, the covering sheet 314 is an extension of the bottom sheet 311 of the first sub-core 31 in a direction away from the first region.

Further, the first sub-core 31 includes a first end, a second end and a pair of side edges connecting the first end and the second end, there are two covering sheets 314, the two covering sheets 314 respectively include a first end and a second end, the second sub-core 32 is connected to the two covering sheets 314, further, a pair of wings 317 are further disposed on the pair of side edges, the wings 317 can be unfolded in a direction away from the surface 313 of the first sub-core 31 or folded in a direction of being attached to the surface 313, an adhesive layer is disposed on the wings 317, and thus the second sub-core 32 is connected by the adhesive layer on the covering sheets 314 and the wings 317 to form a more stable structure.

Referring to fig. 7, in the third embodiment shown in fig. 7, the covering sheet 414 includes a first sheet and a second sheet stacked together, wherein the first sheet is connected to the bottom sheet, the second sheet is connected to the surface layer, the covering sheet 414 can be folded toward the first surface direction or the surface layer, preferably, the first sheet is integrally formed with the bottom sheet, and the second sheet is integrally formed with the surface layer.

Further, in other embodiments, the covering sheet 314 may be detachably connected to the first sub-core 31, and when the second sub-core 32 is peeled off from the first sub-core 31, the covering sheet 314 is peeled off at the same time, so that the protective effect of the covering sheet 314 on the covering area 310 may also be achieved, and the second sub-core 32 is prevented from being directly connected to the first sub-core 31, and the surface layer 313 of the first sub-core 31 may be damaged when the second sub-core 32 is peeled off.

The present invention also provides a disposable absorbent article comprising the composite core 10 described above.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A composite core body is characterized in that the composite core body is detachably connected to a body of a disposable absorption article and comprises a plurality of sub core bodies which are arranged in a stacked mode, the outer contours of the sub core bodies are sequentially reduced from bottom to top, the adjacent sub core bodies are detachably connected, the sub core bodies comprise a first sub core body, a second sub core body and a third sub core body from bottom to top, each sub core body comprises a surface layer, an absorption layer and a bottom layer, the bottom layer of the first sub core body is provided with an adhesive layer and used for being adhered to the body of the disposable absorption article, the first sub core body and the second sub core body are detachably connected, the body comprises a first surface, the first sub core body comprises a first end, a second end and a pair of side edges which connect the first end with the second end, and further comprises a covering sheet, the two covering pieces are respectively provided with a first end and a second end, the covering pieces are arranged on the first sub-core body in a turnover mode, each covering piece comprises a connecting end connected with the first sub-core body and a free end far away from the connecting end, the free ends can move towards the direction of a surface layer attached to the first sub-core body or turn over towards the direction of the first surface of the body under the limitation of the connecting ends, when the free ends are attached to the surface layer of the first sub-core body, the covering pieces shield the area, corresponding to the covering pieces, on the surface layer of the first sub-core body to form a covering area, the second sub-core body is connected to the covering pieces in a stripping mode, before the second sub-core body is not stripped, the second sub-core body is fixed on the covering pieces, after the second sub-core body is stripped, the covering pieces are turned over and connected to the first surface of the body, and the covering pieces are provided with adhesive layers, the adhesive layer is used for connecting the first sub-core body and the second sub-core body through the adhesive layer, and the adhesive force between the adhesive layer arranged on the covering sheet and the covering sheet is larger than the adhesive force between the adhesive layer and the bottom layer of the second sub-core body.

2. The composite core of claim 1, wherein an adhesive layer is disposed between the first sub-core and the second sub-core, an adhesive layer is disposed between the second sub-core and the third sub-core, the adhesive layer disposed between the first sub-core and the second sub-core and the bottom layer of the second sub-core has a greater bonding strength than the surface layer of the first sub-core, and the adhesive layer disposed between the third sub-core and the second sub-core and the bottom layer of the third sub-core has a greater bonding strength than the surface layer of the second sub-core.

3. A composite core as claimed in claim 2, wherein the third sub-core back layer is joined to the second sub-core face layer by ultrasonic welding, and wherein the third sub-core back layer includes at least two joining zones to the second sub-core face layer.

4. The composite core of claim 1 wherein the cover sheet is foldably attached to the first sub-core and is integrally formed with the bottom sheet of the first sub-core.

5. The composite core of claim 1 wherein the cover sheet comprises a first sheet and a second sheet in a stacked arrangement, wherein the first sheet is integrally formed with the bottom layer of the first sub-core and the second sheet is integrally formed with the face layer of the first sub-core.

6. A disposable absorbent article comprising a body and a composite core according to any of claims 1 to 5, said body comprising a recess for receiving the composite core.