CN115154052B

CN115154052B - Leak-proof sanitary absorbent article and preparation method thereof

Info

Publication number: CN115154052B
Application number: CN202210870737.3A
Authority: CN
Inventors: 荣育凤; 焦红岩; 田春兰; 崔象凯
Original assignee: Nuo Chen Co ltd
Current assignee: Nuo Chen Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-07-18
Anticipated expiration: 2042-07-22
Also published as: CN115154052A

Abstract

The invention provides a leakage-proof sanitary absorbent article, which comprises a liquid-permeable surface layer, a leakage-proof component I, an absorption layer and a breathable bottom layer which are sequentially arranged from top to bottom; the leakage-proof component I is of a convex structure with a wide middle part and two narrow ends; the leakage-proof component I is used for preventing liquid from leaking laterally; the rear end of the absorption layer in the length direction is provided with a leakage-proof component II; the leakage-proof component II is a fan shape or a fan ring and is used for preventing liquid from leaking back. According to the leakage-proof sanitary absorbent article provided by the invention, the leakage-proof component I and the leakage-proof component II are arranged between the liquid-permeable surface layer and the absorption layer, and the leakage-proof component I is formed by compounding and folding the non-woven fabric and the high-water-absorption resin absorbent paper into the convex structure with wide middle and narrow two ends, so that when a large amount of liquid flows out, the liquid can be absorbed by the leakage-proof component I in time, thereby effectively preventing the side leakage of the liquid; the leakage-proof component II is arranged at the rear end of the absorption layer in the length direction, and can effectively prevent liquid from leaking.

Description

Leak-proof sanitary absorbent article and preparation method thereof

Technical Field

The invention relates to the technical field of sanitary products, in particular to a leakage-proof sanitary absorbent product and a preparation method thereof, and particularly relates to a diaper, a pull-up diaper, a sanitary towel, a pants-type sanitary towel and an incontinence towel.

Background

The existing sanitary absorbent articles are roughly divided into a liquid-permeable surface layer material, a liquid diversion material, an absorber wrapping material, an absorber and a breathable liquid-impermeable bottom layer material, and other structures such as a functional core, a covering cloth and the like can be added according to specific requirements.

With the development of the age, the requirements of consumers on the sanitary absorbent articles are continuously improved, so that the absorbent articles are required to have the performances of instantaneous absorption, instantaneous dryness, health, softness, ventilation and the like, and meanwhile, the absorbent articles are required to be healthy, breathable and leak-proof; however, most of the existing absorbent articles still have the problems of no dryness, no air permeability, easy bacteria breeding, easy side leakage, and the like after absorbing liquid, so in order to solve the problems, a sanitary absorbent article with high absorptivity, good dryness, bacteriostasis and good leakage prevention effect is needed to be studied.

Disclosure of Invention

The invention provides a leakage-proof sanitary absorbent article which can effectively prevent side leakage and rear leakage of liquid and has the advantages of high liquid seepage speed, good dryness and good antibacterial effect.

In order to achieve the above object, the present invention provides a leak-proof sanitary absorbent article comprising a liquid-permeable top sheet, a leak-proof member I, an absorbent layer and a breathable bottom sheet which are disposed in this order from top to bottom;

the leakage-proof component I is of a convex structure with a wide middle part and two narrow ends; the leakage-proof component I is used for preventing liquid from leaking laterally;

the rear end of the absorption layer in the length direction is provided with a leakage-proof component II; the leakage-proof component II is a fan shape or a fan ring and is used for preventing liquid from leaking back.

Preferably, the liquid-permeable surface layer is at least one selected from hot air non-woven fabric, spun-bonded non-woven fabric, pure cotton non-woven fabric or bamboo fiber non-woven fabric.

More preferably, the liquid-permeable top sheet is a fine denier hot air nonwoven fabric having a denier per filament of 0.5 to 2.5.

Preferably, the leakage preventing member I is a shuttle or an ellipse.

More preferably, the leakage preventing member I is a shuttle shape.

Preferably, the leakage preventing component I is formed by compounding and folding non-woven fabrics and super absorbent resin absorbent paper.

More preferably, the fabric is formed by folding a layer of super absorbent resin absorbent paper wrapped by a layer of non-woven fabric.

The side length of the leakage preventing component I in the length direction is 9-13 cm, and the side length in the width direction is 3-6 cm.

Preferably, the absorbent layer is at least one selected from the group consisting of wet-process super absorbent resin absorbent paper, dust-free paper super absorbent resin absorbent paper, dry-process super absorbent paper, composite core structure and non-woven fabric-wrapped super absorbent resin structure.

Or (b)

The absorption layer is formed by compounding a small convex core and at least one layer of super absorbent resin absorbent paper; wherein the small convex core is of a foam cotton structure; the thickness of the small convex core is 2.5-3.5 mm.

Preferably, the small convex core is provided with a punching structure, and the hole pattern of the punching structure is at least one selected from a circle, an ellipse, a heart, a square or a diamond.

More preferably, the pore diameter of the perforation structure is 1.5-2.5 mm.

Preferably, the pores of the perforation structure are compounded with bacteriostasis factors.

More preferably, the bacteriostatic factors are pseudo-ginseng and aloe; the weight ratio of the pseudo-ginseng to the aloe is (2.5-3.5): (0.5-1.5).

Preferably, the shape of the leakage-proof component II is a fan ring, the central angle of the fan ring is 30-45 degrees, the outer arc radius of the fan ring is 6-8 cm, and the inner arc radius of the fan ring is 1.5-2 cm.

Preferably, the leakage preventing member II includes at least one layer of super absorbent resin absorbent paper.

Preferably, the leak-proof sanitary article further comprises three-dimensional shields arranged on two sides of the liquid-permeable surface layer; wherein the three-dimensional protection ring is formed by compounding non-woven fabrics and rubber strings;

the breathable bottom layer is a breathable waterproof PE film.

In a second aspect, the present invention provides a method for preparing the leak-proof sanitary absorbent article according to any one of the first aspect, wherein the method comprises the following steps:

(1) Manufacturing an absorption layer;

grinding the antibacterial factors to obtain 110-130 mesh antibacterial factor particles; punching and cutting the foam cotton to obtain a convex small core with a punching structure; filling the antibacterial factor particles into a convex small core with a punching structure, and compositing the antibacterial factor particles with at least one layer of high water absorption resin absorbent paper to obtain the absorption layer;

(2) Manufacturing a leakage-proof component I and a leakage-proof component II;

wrapping high water absorption resin absorbent paper by adopting non-woven fabrics, and folding and cutting the absorbent paper to obtain the leakage-proof component I;

cutting the super absorbent resin absorbent paper to obtain the leakage-proof component II;

(3) The rear end of the absorption layer in the length direction is glued with a composite leakage-proof component II, the upper surface of the super absorbent resin absorbent paper of the absorption layer is glued with a composite leakage-proof component I, and the position of the small convex core corresponds to the central position of the leakage-proof component I;

(4) And sequentially adhering a composite liquid-permeable surface layer and a three-dimensional guard ring on the upper surface of the leakage-proof component I, and adhering a composite breathable bottom layer on the lower surface of the absorption layer to obtain the leakage-proof sanitary absorption article.

Compared with the prior art, the invention has at least the following beneficial effects:

(1) According to the leakage-proof sanitary absorbent article provided by the invention, the leakage-proof component I and the leakage-proof component II are arranged between the liquid-permeable surface layer and the absorption layer, and the leakage-proof component I is formed by compounding and folding the non-woven fabric and the high-water-absorption resin absorbent paper into the convex structure with the wide middle and the narrow two ends, so that when a large amount of liquid flows out, the convex structure of the leakage-proof component I can be changed into the structure with the micro-protrusions around the middle concave under the action of liquid pressure, the liquid can be ensured to be absorbed by the leakage-proof component I in time, and the liquid is not easy to diffuse to the periphery, thereby effectively preventing the liquid from leaking laterally; the leakage-proof component II is arranged at the rear end of the absorption layer in the length direction (corresponding to the rear end of a user in use) and can effectively prevent liquid from leaking back;

(2) In some preferred embodiments provided by the invention, the absorption layer of the leak-proof sanitary absorbent article is formed by compounding the convex small core and the high-absorbent resin absorbent paper, the convex small core is perforated foam cotton, and the convex small core corresponds to the pudendum position of a human body, so that the pudendum can be blocked, the liquid is ensured to be absorbed by the convex small core and the high-absorbent resin absorbent paper, the probability of flowing out of the pudendum is reduced, and the dryness of the liquid-permeable surface layer is greatly improved;

(3) In some preferred embodiments provided by the invention, the pores of the foam cotton of the absorption layer of the leak-proof sanitary absorption product are filled with antibacterial factors, wherein the antibacterial factors are pseudo-ginseng and aloe, and the antibacterial factors not only can inhibit bacteria and remove smell, but also can absorb liquid and improve the absorption speed of the absorption layer;

(4) According to the leakage-proof sanitary absorbent article provided by the invention, the liquid-permeable surface layer adopts the fine denier hot air non-woven fabric, and the softness and comfort of the fabric can be ensured and the liquid can be quickly infiltrated through controlling the fiber single filament number.

Drawings

FIG. 1 is a schematic cross-sectional view of a leak-proof sanitary absorbent article provided by the present invention;

FIG. 2 is a schematic view of the position distribution of the leakage preventing component I, the leakage preventing component II and the convex small core in the leakage preventing sanitary absorbent article, which is included in the leakage preventing sanitary absorbent article;

FIG. 3 is a schematic view of the structure of the leakage preventing member I of the leakage preventing sanitary absorbent article according to the present invention;

FIG. 4 is a schematic view showing the structure of the leakage preventing member I of the leakage preventing sanitary absorbent article according to the present invention in a natural state;

FIG. 5 is a schematic view showing the structure of the leakage preventing member I of the leakage preventing sanitary absorbent article according to the present invention in a use state;

in the figure: 100: a liquid-permeable top sheet; 101: a horizontal portion of the liquid-permeable top sheet; 102: a raised portion of the liquid-permeable top sheet; 200: a leakage preventing member I;300: an absorption layer; 400: a breathable bottom layer; 500: a three-dimensional protection ring; 600: a leakage preventing member II;3A: a small convex core; 3B: super absorbent resin absorbent paper.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.

The invention provides a leakage-proof sanitary absorbent article, as shown in fig. 1 and 2, which comprises a liquid-permeable surface layer 100, a leakage-proof component I200, an absorption layer 300 and a breathable bottom layer 400 which are sequentially arranged from top to bottom;

the leakage-proof component I200 is of a convex structure with a wide middle and two narrow ends; the leakage preventing component I200 is used for preventing liquid from leaking laterally; in the present invention, the leakage preventing member I has a middle width and two ends narrow, wherein the "width" and the "narrow" are both relatively speaking, the middle width of the leakage preventing member I means that the width L2 of the leakage preventing member I at the middle position in the longitudinal direction is relatively wide, and the two ends of the leakage preventing member I are narrow, which means that the width of the leakage preventing member I at the middle position in the longitudinal direction gradually narrows toward the two ends as shown in fig. 3.

The rear end of the absorption layer 300 in the length direction is provided with a leakage preventing component II 600; the leakage preventing component II 600 is a fan shape or a fan ring, and the leakage preventing component II 600 is used for preventing liquid from leaking back. In the invention, the leakage-proof component II can be adhered to the upper surface or the lower surface of the rear end position in the length direction of the absorption layer, and the leakage-proof component II is preferably adhered to the upper surface of the rear end position in the length direction of the absorption layer, so that the displacement of the leakage-proof component II can be avoided, and the leakage-proof effect is influenced; wherein the rear end of the absorption layer corresponds to the rear end position of the user during use.

In order to improve the leakage-proof effect of the sanitary absorbent article, the leakage-proof component I and the leakage-proof component II are respectively arranged between the liquid-permeable surface layer and the absorption layer, the leakage-proof component I is of a convex structure with two wide ends in the middle, the position of the leakage-proof component I corresponds to the position of the pudendum structure of a human body, as shown in fig. 1 and 4, the leakage-proof component I is in a convex state at the middle position in a natural state (unused state), on one hand, the structure can ensure that a user has good comfort and fit degree when contacting the sanitary absorbent article, and on the other hand, when liquid flows out, the leakage-proof component I can present a micro-convex structure around the middle concave under the action of the gravity of the liquid (as shown in fig. 5), so that the liquid can be absorbed by the leakage-proof component I in time, not only has the effect of preventing back leakage, but also can effectively prevent the liquid from side leakage. Meanwhile, in order to further prevent the phenomenon of liquid leakage after a user lies on the back, one end of the tail part of the absorption layer in the length direction is provided with a leakage-proof part II, the position of the leakage-proof part corresponds to the position of a femoral canal of a human body, and the leakage-proof part II is in a fan-shaped or fan-shaped ring structure, wherein the arc lengths of the fan-shaped or fan-shaped ring are parallel to the arc lengths of the liquid-permeable surface layer, the absorption layer and the breathable bottom layer; the leakage-proof component II of the fan shape or the fan ring not only can effectively prevent liquid from leaking back, but also can realize the maximum utilization of the leakage-proof component II. According to the invention, through the interaction of the leakage prevention component I and the leakage prevention component II, the phenomenon of side leakage or rear leakage of liquid can be effectively prevented.

According to some preferred embodiments, the liquid-permeable top sheet 100 is at least one selected from the group consisting of a hot air nonwoven fabric, a spunbond nonwoven fabric, a purified cotton nonwoven fabric, and a bamboo fiber nonwoven fabric.

According to some more preferred embodiments, the liquid-permeable top sheet 100 is a fine denier hot air nonwoven fabric having a denier per filament of 0.5 to 2.5.

In the present invention, the liquid-permeable top sheet may be at least one of a hot air nonwoven fabric, a spunbonded nonwoven fabric, a pure cotton nonwoven fabric, or a bamboo fiber nonwoven fabric, and in order to further secure the comfort and liquid permeability of the liquid-permeable top sheet, the liquid-permeable top sheet of the present invention is preferably a fine denier hot air nonwoven fabric, and the single filament fineness of the nonwoven fabric is controlled to 0.5 to 2.5 denier (for example, may be 0.5 denier, 0.8 denier, 1.0 denier, 1.5 denier, 1.8 denier, 2 denier, or 2.5 denier), and when the single filament fineness of the fiber is too high or too low, the softness, comfort and liquid permeability of the liquid-permeable top sheet are adversely affected.

According to some preferred embodiments, the leakage preventing member I200 is a shuttle shape or an oval shape.

According to some more preferred embodiments, the leakage preventing member I200 is a shuttle shape.

According to some preferred embodiments, the leakage preventing member I200 is formed by folding a nonwoven fabric and a super absorbent resin absorbent paper.

According to some more preferred embodiments, the leakage preventing member I200 is formed by folding a layer of super absorbent resin absorbent paper wrapped with a layer of non-woven fabric.

In the present invention, the leakage preventing member I has a convex structure with two wide ends and a narrow middle, the leakage preventing member I is in a convex state in a natural state, and the liquid permeable surface layer is composed of a convex portion 102 and a horizontal portion 101, the leakage preventing member I has a convex structure in a natural state with respect to the horizontal portion of the liquid permeable surface layer, and the convex structure is a fusiform or elliptic fluffy structure obtained by compositely cutting a non-woven fabric and a super absorbent resin absorbent paper, so that the leakage preventing member I not only can not cause people to feel extrusion when contacting with human skin, but also has good comfort, and can be absorbed by the leakage preventing member I in time when a large amount of liquid flows out, thereby effectively preventing liquid side leakage.

In the invention, the leakage-proof component I is obtained by compounding non-woven fabrics and super absorbent resin absorbent paper, specifically, one or more layers of non-woven fabrics can be adopted to fully wrap one or more layers of super absorbent resin absorbent paper, and a convex structure with wide middle and narrow two ends is obtained after cutting and compounding in sequence; meanwhile, the area of the non-woven fabric should be larger than that of the super absorbent resin absorbent paper when cutting is carried out, so that the leakage-proof effect of the leakage-proof component I is improved more favorably. The leakage preventing member I may be a shuttle shape or an oval shape, and in the present invention, the leakage preventing member I is preferably a shuttle shape, which is more advantageous in that the leakage preventing member forms a convex structure, so that the leakage preventing member is more comfortable when being attached to a human body, and is more advantageous in preventing side leakage of liquid.

According to some preferred embodiments, the leakage preventing member I200 has a side length of 9 to 13cm in the longitudinal direction and a side length of 3 to 6cm in the width direction.

In the present invention, the side length of the leakage preventing member I in the longitudinal direction and the side length thereof in the width direction are measured as the length of the leakage preventing member I or the distance between the two points farthest in the width direction. For example, in fig. 4, the side length of the leakage preventing member I in the longitudinal direction is L1, the side length in the width direction is L2, and the longitudinal direction and the width direction of the leakage preventing member I in the present invention are consistent with the longitudinal direction and the width direction of the leakage preventing absorbent article; in some preferred embodiments, the leakage preventing member I in the present invention has a side length in the longitudinal direction of 9 to 13cm (for example, 9cm, 10cm, 11cm, 12cm or 13cm may be used), and a side length in the width direction of 3 to 6cm (for example, 3cm, 4cm, 5cm or 6cm may be used). The arrangement of the side length range can ensure that the leakage-proof component I has excellent leakage-proof effect and comfort; when the range of each side length is lower or higher than the above range, the leakage preventing effect and comfort of the leakage preventing member I are deteriorated.

According to some preferred embodiments, the absorbent layer 300 is at least one selected from the group consisting of wet-process super absorbent resin absorbent paper, dust-free paper super absorbent resin absorbent paper, dry-process super absorbent paper, composite core structure, and nonwoven fabric-wrapped super absorbent resin structure;

or (b)

The absorption layer is formed by compounding a small convex core and at least one layer of super absorbent resin absorbent paper; wherein the small convex core is of a foam cotton structure; the thickness of the small convex core is 2.5-3.5 mm. The small convex core 3A is closer to the liquid-permeable surface layer than the at least one layer of super absorbent resin absorbent paper 3B.

In the invention, the absorption layer is made of wet-process super absorbent resin absorbent paper, which means that the absorption layer is formed by uniformly distributing super absorbent resin between two raw paper layers made of wood pulp through a wet-process papermaking process, and each layer of wet-process papermaking super absorbent resin absorbent paper is formed by two raw paper layers and super absorbent resin sandwiched between the two raw paper layers; the absorbent layer is dust-free paper and super absorbent resin absorbent paper, which means that the super absorbent resin is compounded between two layers of dust-free paper; the absorbent layer is made of absorbent paper by a dry method, namely, a structure of a mixed layer formed by mixing super absorbent resin and fluff pulp is compounded between two layers of wet strength paper layers by a dry method papermaking process, and the mass ratio between the super absorbent resin and the fluff pulp is achieved by adopting the common proportion in the existing dry method papermaking process; the absorbent layer is a composite core structure, which means that the absorbent layer sequentially comprises a dust-free paper layer, a super absorbent resin layer, a fluffy cotton layer, a super absorbent resin layer and a dust-free paper layer from top to bottom, the dust-free paper layer and the fluffy cotton layer are not particularly limited, and the absorbent layer is made of dust-free paper or fluffy cotton commonly used for preparing composite cores in the prior art; the non-woven fabric wrapped with the super absorbent resin absorbent paper refers to a structure formed by wrapping one or more layers of non-woven fabrics with one or more layers of wet-process super absorbent resin absorbent paper, and the non-woven fabrics can be one of hot air non-woven fabrics, spun-bonded non-woven fabrics or spun-laced non-woven fabrics.

In the invention, the absorption layer can also be a foam cotton composite super absorbent resin absorbent paper structure, namely a structure formed by wrapping polyurethane foam cotton with one or more layers of wet-process super absorbent resin absorbent paper, and the foam cotton has good haemophilic effect, and can further improve the liquid absorption speed and liquid locking capacity of the absorption layer after being compounded with the super absorbent resin absorbent paper. More preferably, the absorption layer adopts at least one layer of super absorbent resin absorbent paper to wrap the foam cotton structure, and the foam cotton is used as a convex small core structure in the absorption layer, and the position of the convex small core structure corresponds to the central position of the leakage-proof component I and is attached to the pudendum position of a human body; according to the invention, through the interaction of the convex small core and the leakage-proof component I, the side leakage or the rear leakage of liquid can be further prevented, when the liquid flows out, the convex small core can be used for blocking the pudendum, so that the liquid is absorbed by the convex small core in time, and the probability of the liquid flowing out of the pudendum is reduced; secondly, when the liquid volume is great, leak protection part I can in time absorb liquid, can effectively prevent liquid side leakage or back leak.

In the present invention, the area of the absorbent layer is slightly smaller than the area of the liquid-permeable top sheet, the area of the small protruding core in the absorbent layer is smaller than the area of the high absorbent resin absorbent paper, the shape of the small protruding core may be rectangular, for example, in order to further improve the comfort level when the absorbent layer is attached to the pudendum of a human body, the shape of the small protruding core is preferably rectangular with rounded corners, meanwhile, in the present invention, the length of the small protruding core may be 8 to 10cm (for example, may be 8cm, 8.5cm, 9cm, 9.5cm or 10 cm), the width may be 2 to 4cm (for example, may be 2cm, 2.5cm, 3cm, 3.5cm or 4 cm), and the thickness of the small protruding core may be 2.5 to 3.5mm (for example, may be 2.5mm, 3mm, 3.2mm or 3.5 mm), so that the liquid is not only absorbed in time, but also the comfort level is not caused.

According to some preferred embodiments, the small convex core 3A is provided with a hole pattern of at least one selected from a circle, an ellipse, a heart, a square or a diamond.

According to some more preferred embodiments, the aperture of the perforated structure is 1.5-2.5 mm (e.g., may be 1.5mm, 1.8mm, 2mm, 2.2mm, or 2.5 mm).

In some preferred embodiments of the present invention, the convex small core of the absorbent layer may further be provided with a hole punching structure, so that the liquid absorbing speed of the convex small core can be further improved, the hole shape of the hole punching structure may be selected from any one of a circle, an ellipse, a heart, a square or a rectangle, the hole shape of the hole punching structure is not particularly limited, and the hole shape of the hole punching structure may be other shapes, so long as the aperture of the hole punching structure is ensured to be 1.5-2.5 mm. Meanwhile, in the invention, when the hole pattern of the punching structure is non-circular, the aperture of the punching structure is an aperture meter with circumscribed circles of other shapes.

According to some preferred embodiments, the pores of the perforated structure are composited with bacteriostasis factors.

According to some more preferred embodiments, the bacteriostatic factors are notoginseng and aloe; the weight ratio of the pseudo-ginseng to the aloe is (2.5-3.5): (0.5-1.5) (e.g., may be 2.5:0.5, 2.8:0.8, 3:1, 3.2:1.2, or 3.5:1.5).

In some preferred embodiments of the invention, the punching structure of the convex small core can be a half hole or a through hole, generally, the prior art easily thinks that the punching structure is arranged on the foam cotton to improve the liquid absorption speed of the foam cotton, however, the invention firstly compounds the antibacterial factors in the holes of the punching structure of the convex small core, and unexpectedly, after the antibacterial factors are compounded in the holes of the convex small core, the invention can not only reduce the absorption speed of the convex small core, but also endow the convex small core with good antibacterial effect, can prevent bacteria from entering pudendum through the convex small core, and effectively reduce the occurrence probability of gynecological diseases. Meanwhile, the punching structure of the convex small core is preferably a half hole, wherein the half hole is a punching structure at two thirds of the thickness direction of the convex small core, specifically, the hole of the punching structure extends from the upper surface of the convex small core to the lower surface of the convex small core, and the depth of the hole of the punching structure accounts for two thirds of the thickness of the convex small core; therefore, the bacteriostatic factors can be ensured to be better fixed in the convex small core, and the phenomenon that the bacteriostatic factors are dislocated due to liquid flushing, so that the bacteriostatic effect of the convex small core is poor is avoided.

It should be noted that, in the present invention, the bacteriostatic factors include, but are not limited to, notoginseng and aloe, and may also be selected from other types of bacteriostatic factors, such as honeysuckle, mugwort or clove, according to the actual bacteriostatic requirement.

According to some preferred embodiments, the leakage preventing part II 600 is a fan ring having a central angle of 30 ° to 45 ° (for example, 30 °, 35 °, 40 ° or 45 °), an outer arc radius of 6 to 8cm (for example, 6cm, 6.5cm, 7cm, 7.5cm or 8 cm), and an inner arc radius of 1.5 to 2cm (for example, 1.5cm, 1.6cm, 1.7cm, 1.8cm, 1.9cm or 2 cm).

According to some preferred embodiments, the leakage preventing member II 600 includes at least one layer of super absorbent resin absorbent paper.

In some preferred embodiments of the present invention, the leakage preventing component II is a fan ring, and the inner arc and the outer arc of the fan ring are parallel to the arcs of the liquid permeable surface layer, the absorbing layer and the air permeable bottom layer. The invention mainly controls the size of the leakage-proof component II through the central angle, the outer arc radius and the inner arc radius corresponding to the fan ring, and can improve the utilization rate of the leakage-proof component II on the basis of ensuring the excellent back leakage-proof effect of the leakage-proof component II when the central angle, the outer arc radius and the inner arc radius corresponding to the fan ring are within the range specified by the invention. The leakage-proof component II in the invention can be formed by cutting one or more layers of super absorbent resin absorbent paper.

The super absorbent resin absorbent paper adopted in the invention is super absorbent resin absorbent paper which is formed by uniformly distributing super absorbent resin between two layers of base paper through wet papermaking, wherein the particle size of the super absorbent resin is 30-100 meshes, the water retention capacity is not lower than 25g/g, and the liquid passing capacity is not lower than 0.1mL/min; the gram weight of the prepared super absorbent resin absorbent paper is 20-300 g/m ² Preferably 70 to 150g/m ² 。

According to some preferred embodiments, the leakage-proof sanitary article further comprises three-dimensional protectors 500 provided at both sides of the liquid-permeable surface layer; wherein, the three-dimensional guard 500 is formed by compounding non-woven fabrics and rubber strings;

the breathable bottom layer 400 is a breathable and waterproof PE film.

The invention also provides a preparation method of the leak-proof sanitary absorbent article, which is characterized by comprising the following steps:

(1) Manufacturing an absorption layer 300;

grinding the antibacterial factors to obtain 110-130 mesh antibacterial factor particles; punching and cutting foam cotton to obtain a small convex core 3A with a punching structure; filling the antibacterial factor particles into a convex small core 3A with a punching structure, and compositing the antibacterial factor particles with at least one layer of super absorbent resin absorbent paper 3B to obtain the absorption layer;

(2) Manufacturing a leakage prevention part I200 and a leakage prevention part II 600;

wrapping the super absorbent resin absorbent paper with non-woven fabrics, and folding and cutting the super absorbent resin absorbent paper to obtain the leakage-proof component I200;

cutting the super absorbent resin absorbent paper to obtain the leakage-proof component II 600;

(3) A composite leakage preventing member II 600 is glued at the rear end of the absorption layer 300 in the length direction, a composite leakage preventing member I is glued on the upper surface of the super absorbent resin absorbent paper of the absorption layer, and the position of the small convex core corresponds to the central position of the leakage preventing member I;

(4) The leakage-proof sanitary absorbent article is obtained by sequentially adhering a composite liquid-permeable top sheet 100 and a three-dimensional enclosure 500 to the upper surface of the leakage-proof member I200, and adhering a composite air-permeable bottom sheet 400 to the lower surface of the absorbent layer 300.

In order to ensure that the leakage preventing component I is in a convex state in a natural state, when the leakage preventing component I is stuck on the surface of the super absorbent resin of the absorption layer, only the periphery of the edge of the leakage preventing component I is stuck, so that the leakage preventing component I is more beneficial to forming a convex structure.

It should be noted that in the invention, firstly, the antibacterial factors are ground to obtain antibacterial factor particles of 110-130 meshes (for example, 110 meshes, 120 meshes or 130 meshes), and by adopting the antibacterial factors in the particle size range, not only can the uniform mixing of the two antibacterial factors be ensured, but also the excellent liquid absorption performance of the antibacterial factors can be ensured; and then the antibacterial factor particles are compacted after filling the pores of the foam cotton with the perforated structure, so that the displacement of the antibacterial factor particles can be avoided, and the antibacterial liquid absorption effect of the convex small core is influenced.

In fig. 1 of the present invention, the structural layers are peeled off from each other for clarity in illustrating the positional relationship of the structural layers of the present invention, and it should be understood that the present invention is actually a close and/or partial bond between the structural layers.

The length and thickness of each layer of the leak-proof sanitary absorbent article are not particularly limited except for the special description, and the conventional length and thickness can be adopted.

In order to more clearly illustrate the technical scheme and advantages of the present invention, the present invention will be further described below with reference to examples.

Example 1

A leakproof sanitary absorbent article comprises a liquid-permeable surface layer, a leakproof component I, an absorption layer and a breathable bottom layer (PE breathable film) which are sequentially arranged from top to bottom;

(1) Manufacturing an absorption layer;

grinding Notoginseng radix and aloe with a weight ratio of 3:1 to obtain antibacterial factor granule of 130 meshes; punching foam cotton (the depth of punching is two thirds of the thickness of the foam cotton) and cutting to obtain a convex small core structure (the length is 3cm, the width is 3cm, and the thickness is 3 mm) of a punching structure; wherein the hole pattern of the punching structure is round, and the aperture is 2mm; filling the pores of the convex small core structure with antibacterial factor particles, compacting, and wrapping the convex small core structure with a layer of high-water-absorption resin absorbent paper to obtain an absorption layer;

(2) Manufacturing a leakage-proof component I and a leakage-proof component II:

wrapping a layer of super absorbent resin absorbent paper by adopting a layer of non-woven fabric, and folding and cutting the super absorbent resin absorbent paper into a shuttle shape to obtain a leakage-proof component I; wherein, the side length L1 of the leakage preventing component I in the length direction is 9cm, and the side length L2 in the width direction is 4cm;

cutting a layer of super absorbent resin into a fan ring to obtain a leakage-proof component II; wherein, the central angle of the fan ring is 30 degrees, the radius of the outer arc is 7cm, and the radius of the inner arc is 1.5cm;

(3) The rear end in the length direction of the absorption layer is glued with the composite leakage-proof component II, the upper surface of the super absorbent resin absorbent paper of the absorption layer is glued with the composite leakage-proof component I, and the position of the small convex core corresponds to the central position of the leakage-proof component I;

(4) The upper surface of the leakage-proof component I is sequentially glued with a composite liquid-permeable surface layer (fine denier hot air non-woven fabric with single denier of 1 denier) and a three-dimensional guard (non-woven fabric composite rubber band), and the lower surface layer of the absorption layer is glued with a composite breathable bottom layer, so that the leakage-proof sanitary absorption product is obtained.

Example 2

(1) Manufacturing an absorption layer;

grinding Notoginseng radix and aloe with weight ratio of 2.5:1.5 to obtain antibacterial factor granule of 120 meshes; punching foam cotton (the depth of punching is two thirds of the thickness of the foam cotton) and cutting to obtain a convex small core structure (2.5 cm long, 3.5cm wide and 2.8mm thick) with a punching structure; wherein the hole pattern of the punching structure is round, and the aperture is 2.5mm; filling the pores of the convex small core structure with antibacterial factor particles, compacting, and wrapping the convex small core structure with a layer of high-water-absorption resin absorbent paper to obtain an absorption layer;

(2) Manufacturing a leakage-proof component I and a leakage-proof component II:

wrapping a layer of super absorbent resin absorbent paper by adopting a layer of non-woven fabric, and folding and cutting the super absorbent resin absorbent paper into a shuttle shape to obtain a leakage-proof component I; wherein, the side length L1 of the leakage preventing component I in the length direction is 10cm, and the side length L2 in the width direction is 5cm;

cutting a layer of super absorbent resin into a fan ring to obtain a leakage-proof component II; wherein, the central angle of the fan ring is 45 degrees, the radius of the outer arc is 8cm, and the radius of the inner arc is 2cm;

(4) The upper surface of the leakage-proof component I is sequentially glued with a composite liquid-permeable surface layer (fine denier hot air non-woven fabric with the single filament number of 0.5) and a three-dimensional guard (non-woven fabric composite rubber band), and the lower surface layer of the absorption layer is glued with a composite breathable bottom layer, so that the leakage-proof sanitary absorption product is obtained.

Example 3

(1) Manufacturing an absorption layer;

grinding Notoginseng radix and aloe with a weight ratio of 3.5:1 to obtain antibacterial factor granule of 120 meshes; punching foam cotton (the depth of punching is two thirds of the thickness of the foam cotton) and cutting to obtain a convex small core structure (3.5 cm long, 4cm wide and 3.5mm thick) with a punching structure; wherein the hole pattern of the punching structure is diamond-shaped, and the diameter of the circumscribing circle is 2.5mm; filling the pores of the convex small core structure with antibacterial factor particles, compacting, and wrapping the convex small core structure by adopting two layers of high-water-absorption resin absorbent paper to obtain an absorption layer;

(2) Manufacturing a leakage-proof component I and a leakage-proof component II:

wrapping a layer of super absorbent resin absorbent paper by adopting a layer of non-woven fabric, and folding and cutting the super absorbent resin absorbent paper into an oval shape to obtain a leakage-proof component I; wherein, the side length L1 of the leakage preventing component I in the length direction is 11cm, and the side length L2 in the width direction is 5.5cm;

cutting two layers of super absorbent resin into a fan shape to obtain a leakage-proof component II; wherein, the central angle of the fan shape is 40 degrees, and the radius is 6cm;

Example 4

Example 4 is substantially the same as example 1 except that: in the step (1), the absorbent layer is free of a medium-convex small core structure, and is composed of only one layer of super absorbent resin absorbent paper.

Example 5

Example 5 is substantially the same as example 1 except that: in the step (1), the absorption layer is folded into a convex small core structure by adopting two layers of super absorbent resin absorbent paper, and the convex small core has no bacteriostasis factors and no perforation structure.

Example 6

Example 6 is substantially the same as example 1 except that: in step (1), the convex small core in the absorption layer has no perforation structure and no bacteriostasis factor.

Example 7

Example 7 is substantially the same as example 1 except that: in the step (1), the convex small core in the absorption layer is provided with a perforation structure, but no bacteriostasis factors exist.

Example 8

Example 8 is substantially the same as example 1 except that: in the step (1), the bacteriostatic factors in the absorption layer are mugwort and clove.

Example 9

Example 9 is substantially the same as example 1 except that: in the step (2), the side length of the leakage preventing component I in the length direction of the leakage preventing absorbing article is 4cm, the side length in the width direction of the leakage preventing absorbing article is 6cm, and the three-dimensional protective ring is not arranged.

Example 10

Example 10 is substantially the same as example 1 except that: in the step (2), the side length of the leakage preventing member I in the longitudinal direction of the leakage preventing absorbent article was 15cm, and the side length in the width direction of the leakage preventing absorbent article was 2cm.

Example 11

Example 11 is substantially the same as example 1 except that: in the step (2), the leakage-proof part II is a fan ring, the central angle of the fan ring is 20 degrees, the radius of the outer arc is 5cm, and the radius of the inner arc is 2cm.

Comparative example 1

Comparative example 1 is substantially the same as example 1 except that: in step (2), the leakage preventing member I is not provided.

Comparative example 2

Comparative example 2 is substantially the same as example 1 except that: in step (2), the leakage preventing member II is not provided.

Comparative example 3

Comparative example 3 is substantially the same as example 1 except that: in the step (2), a layer of super absorbent resin absorbent paper is used for replacing the leakage prevention component I and the leakage prevention component II, and in the step (4), a three-dimensional protection ring is not arranged.

Comparative example 4

Comparative example 4 is substantially the same as comparative example 3 except that: in the step (1), the absorption layer is formed by compounding fluff pulp and super absorbent resin.

Comparative example 5

Comparative example 5 is substantially the same as example 1 except that: in the step (2), the leakage preventing member II is rectangular with a length of 5cm and a width of 3 cm.

Comparative example 6

Comparative example 6 is substantially the same as example 1 except that: in the step (2), the leakage preventing component I is in a fusiform shape, but the leakage preventing component I is in a plane shape, has no convex structure, uses hot air non-woven fabrics and has no three-dimensional protection.

The leak-proof sanitary absorbent articles of examples 1 to 9 and comparative examples 1 to 6 were subjected to performance test in the present invention, respectively, and the results of the performance test are shown in Table 1.

The first test method comprises the following steps: taking animal blood for 2 times, each time of 5mL, and recording the time of finishing each time of absorption as the absorption speed in s at intervals of 10 minutes for 2 times; reverse osmosis is to put 10g filter paper on the sanitary absorbent article for 1min under the pressure of 1.2kg after 5mL animal blood is absorbed by the sanitary towel for 5min, and weigh the gram weight added by the filter paper in g;

and a second test method: attaching the leakage-proof sanitary absorbing article to the bottom of the U-shaped groove, and longitudinally inclining to the left or right or backwards by 10 degrees for liquid adding test; taking animal blood for 2 times, 5mL each time, and 10 minutes at intervals of 2 times, receiving the animal blood for side leakage after each liquid adding through a tray, weighing and recording the side leakage amount, wherein the unit is g, and judging the side leakage prevention effect;

and a test method III: randomly selecting 20 persons, wearing the leak-proof absorbent article for trial, and judging the antibacterial and deodorizing effects.

TABLE 1

From the above comparative data, it can be seen that the leak-proof sanitary absorbent articles of examples 1 to 3 have a high liquid absorption rate, a low reverse osmosis and good side leakage and back leakage preventing effects; in example 4, when the convex small core structure is not provided in the absorbent layer, the absorbent layer has poor fitting degree with the human body and cannot effectively inhibit bacteria; in example 5, when the convex small core in the absorbent layer is formed by folding the super absorbent resin absorbent paper and has no bacteriostasis factors and perforation structure, the bonding degree of the absorbent layer to the human body is poor, and compared with examples 1 to 3, the absorption speed of the absorbent layer is slower and no bacteriostasis effect is achieved; in example 6, when the center convex small core has no perforation structure and no antibacterial factor, not only the absorption speed of the absorption layer is reduced, but also the absorption layer has no antibacterial effect; meanwhile, in example 8, when other types of bacteriostatic factors are adopted for the convex small core, the bacteriostatic and deodorizing effects cannot be effectively achieved and the absorption speed of the convex small core can not be improved. In comparative examples 1 to 3, when the leakage preventing member I or II is not provided in the sanitary absorbent article, or other types of leakage preventing members are employed, the leakage preventing effect of the sanitary absorbent article is deteriorated; in comparative example 4, when neither the absorbent layer nor the leakage preventing member is of the type in the present invention, not only the absorption rate of the sanitary absorbent article is slowed, so that the dryness of the top sheet is poor, but also the leakage preventing effect (side leakage and back leakage) of the sanitary absorbent article is poor.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention. The invention is not described in detail in a manner known to those skilled in the art.

Claims

1. A leak-proof sanitary absorbent article, characterized in that:

the leakage-proof sanitary absorbent article comprises a liquid-permeable surface layer, a leakage-proof component I, an absorption layer and a breathable bottom layer which are sequentially arranged from top to bottom;

the leakage-proof component I is of a convex structure with a wide middle part and two narrow ends; the leakage-proof component I is used for preventing liquid from leaking laterally; the leakage-proof component I is fusiform or elliptic; the side length of the leakage-proof component I in the length direction is 9-13 cm, and the side length in the width direction is 3-6 cm; the leakage-proof component I is formed by compounding and folding non-woven fabrics and super absorbent resin absorbent paper;

the rear end of the absorption layer in the length direction is provided with a leakage-proof component II; the leakage-proof component II is a fan shape or a fan ring and is used for preventing liquid from leaking back; the absorption layer is formed by compounding a small convex core and at least one layer of super absorbent resin absorbent paper; wherein the small convex core is of a foam cotton structure; the thickness of the small convex core is 2.5-3.5 mm; the position of the small convex core structure corresponds to the central position of the leakage-proof component I; a punching structure is arranged on the small convex core, and antibacterial factors are compounded in pores of the punching structure; the aperture of the punching structure is 1.5-2.5 mm; the antibacterial factors are pseudo-ginseng and aloe; the weight ratio of the pseudo-ginseng to the aloe is (2.5-3.5): (0.5 to 1.5).

2. The leak-proof sanitary absorbent article of claim 1, wherein:

the liquid-permeable surface layer is at least one selected from hot air non-woven fabric, spun-bonded non-woven fabric, pure cotton non-woven fabric or bamboo fiber non-woven fabric.

3. The leak-proof sanitary absorbent article of claim 2, wherein:

the liquid-permeable surface layer is a fine denier hot air non-woven fabric, and the single filament fineness of the fine denier hot air non-woven fabric is 0.5-2.5 denier.

4. The leak-proof sanitary absorbent article of claim 1, wherein:

the leakage-proof component I is formed by folding a layer of non-woven fabric wrapped by a layer of super absorbent resin absorbent paper.

5. The leak-proof sanitary absorbent article of claim 1, wherein:

the hole pattern of the punching structure is at least one selected from a circle, an ellipse, a heart, a square or a diamond.

6. The leak-proof sanitary absorbent article of claim 1, wherein:

the leakage-proof component II is a fan ring, the central angle of the fan ring is 30-45 degrees, the outer arc radius of the fan ring is 6-8 cm, and the inner arc radius of the fan ring is 1.5-2 cm; and/or

The leakage preventing component II comprises at least one layer of super absorbent resin absorbent paper.

7. The leak-proof sanitary absorbent article of claim 1, wherein:

the leak-proof sanitary absorbent article further comprises three-dimensional shields arranged on two sides of the liquid-permeable surface layer; wherein the three-dimensional protection ring is formed by compounding non-woven fabrics and rubber strings;

the breathable bottom layer is a breathable waterproof PE film.

8. A method of making a leak-proof sanitary absorbent article according to any one of claims 1 to 7, comprising the steps of:

(1) Manufacturing an absorption layer;

grinding the bacteriostasis factors to obtain 110-130 mesh bacteriostasis factor particles; punching and cutting the foam cotton to obtain a convex small core with a punching structure; filling the antibacterial factor particles into a convex small core with a punching structure, and compositing the antibacterial factor particles with at least one layer of high water absorption resin absorbent paper to obtain the absorption layer;

(2) Manufacturing a leakage-proof component I and a leakage-proof component II;