CN215273893U - Sanitary towel with convex core - Google Patents

Abstract

The utility model relates to a health supplies technical field provides a sanitary towel that contains convex core, including the sanitary towel body, the sanitary towel body includes by last liquid permeability surface course, transmission layer, convex core, the leak protection bottom that sets up down the stromatolite, convex core is by last first absorbed layer, convex absorbed layer and the second absorbed layer of including down, convex absorbed layer includes convex region and non-convex region in the middle, the fluff pulp absorber quality in convex region and the fluff pulp absorber mass ratio in the non-convex region are greater than 3:1, the outer parcel of the fluff pulp absorber on the convex region has absorbent paper, be equipped with the gap on the convex core, the gap runs through convex core, be equipped with outer lane guiding gutter and vertical bar guiding gutter on the liquid permeability surface course, be equipped with the infiltration hole on the liquid permeability surface course. The sanitary towel solves the problems that the sanitary towel in the prior art is low in menstrual blood permeation and absorption speed, the surface of the sanitary towel is difficult to ensure to be dry, and side leakage and back leakage are easy to occur.

Description

Sanitary towel with convex core

Technical Field

The utility model relates to a health supplies technical field especially relates to a sanitary towel that contains convex core.

Background

The existing plane sanitary towel sold in the market has certain defects, for example, the sanitary towel can not be attached to the human body menstrual blood excretion port in the using process of a consumer, and menstrual blood can not be absorbed in time when tidal surge occurs, so that side leakage is caused; for another example, the flat sanitary napkin is not reinforced at the position corresponding to the position of the menstrual blood excretion, and the speed of the menstrual blood permeating and diffusing downwards from the surface layer of the sanitary napkin and being absorbed is limited, which can not meet the requirements of consumers for the dryness and comfort of the sanitary napkin product. Chinese patent application No.: 201720013258.4 discloses a novel sanitary towel absorber, from top to bottom superimposed well protruding water conservancy diversion layer in proper order, main absorbed layer and leak protection layer constitute, well protruding water conservancy diversion layer is located the middle part of main absorbed layer and upwards protruding, the rear end on leak protection layer is the fan-shaped setting of expansion, the bottom of main absorbed layer is covered to leak protection layer, it has the water conservancy diversion resin polymer to add in the well protruding water conservancy diversion layer, it has the resin polymer that absorbs water to add in the main absorbed layer, the tight private department of laminating of well protruding water conservancy diversion layer, the water conservancy diversion resin polymer guides the menstruation blood to ooze down fast, the infiltration absorption of menstruation blood is ensured to the water absorption resin polymer in the main absorbed layer, guarantee the dry and comfortable of private department, the rear end all-round side leakage and the back leak of the leak protection layer of fan-shaped setting, avoid causing women's awkwardness. The sanitary napkin improves the infiltration speed of menstrual blood and improves the dryness of the surface of the sanitary napkin, but the absorption speed and the absorption amount of the menstrual blood are not obviously increased.

Chinese patent application No.: 201520492622.0 discloses a sanitary napkin, comprising a skin-friendly surface layer, a water-impermeable back layer and an absorbent core therebetween, wherein the absorbent core comprises a convex central convex part at the middle part and concave parts at both sides; the skin-friendly surface layer covers the upper end face of the groove part to form a hollow flow guide groove. The sanitary towel absorbs the middle part protrusion of core, and the cavity water conservancy diversion recess absorption rate that is darker in well convex part both sides is fast, can absorb the menses in the twinkling of an eye and upwards down left and right diffusion, prevents the emergence of the side leakage condition effectively, prevents that the side leakage is effectual. The absorption core body containing the middle convex part in the market at present mainly comprises the following two materials: the middle of the absorption core body made of the SAP fluff pulp is thick, so that the SAP or pure absorbent paper is not favorable for ventilation and is limited by the forming process level of the fluff pulp on steps of the existing sanitary towel production equipment, the mass ratio of the fluff pulp of the convex part to the fluff pulp of other areas of the absorption core body is about 1.5-3: 1, the mass ratio is difficult to exceed 3:1, otherwise, the convex part is easy to deform. The thickness of the absorption core body made of pure absorbent paper is reasonable, but the whole product is hard, the use comfort is not good, and the absorption speed of the product to menstrual blood is slow.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above, the present invention provides a sanitary napkin with a convex core, which solves the problems of the prior art that the sanitary napkin has a slow absorption speed for the penetration of menstrual blood, is difficult to ensure the dryness of the surface of the sanitary napkin, has insufficient absorption capacity, is difficult to effectively absorb and lock when a large amount of menstrual blood is discharged, and is easy to cause side leakage and back leakage.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

a sanitary towel containing a convex core body comprises a sanitary towel body, wherein the longitudinal direction of the sanitary towel body is defined to extend along the length direction, the transverse direction of the sanitary towel body extends along the width direction, the sanitary towel body comprises a liquid-permeable surface layer, a transmission layer, a convex core body and a leakage-proof bottom layer which are sequentially stacked from top to bottom, the convex core body comprises a first absorption layer and a second absorption layer positioned below the first absorption layer, a convex absorption layer is arranged between the first absorption layer and the second absorption layer, the convex absorption layer comprises a convex area and a non-convex area, the convex area is positioned in the middle of the convex absorption layer, the convex area corresponds to the position of a menstrual blood excretion opening of a user, the convex absorption layer is a fluff pulp absorption body containing SAP, the mass ratio of the fluff pulp absorption body of the convex area to the fluff pulp absorption body of the non-convex area is greater than 3:1, the outer parcel of fluff pulp absorber on the convex region has absorbent paper, absorbent paper is e shape beta structure, absorbent paper is by last first layer absorbent paper, second floor absorbent paper and the third layer absorbent paper of being divided into down, be equipped with the gap on the convex core, the gap runs through the convex core, the length of gap is 4 ~ 50mm, and the width is 0.2 ~ 3mm, gap and fore-and-aft contained angle are 0 ~ 40, be equipped with outer lane guiding gutter and vertical guiding gutter on the liquid permeability surface course, the week edge on liquid permeability surface course is located to the outer lane guiding gutter, the middle part on liquid permeability surface course is located to the vertical guiding gutter, the degree of depth of outer lane guiding gutter is 0.3 ~ 0.7mm, the degree of depth of vertical guiding gutter is 0.1 ~ 0.5mm, be equipped with the infiltration hole on the liquid permeability surface course, the infiltration hole runs through liquid permeability surface course, transmission layer, convex core.

Further improvement: the length of the straight diversion trench is 5-20 mm, and the width of the straight diversion trench is 0.5-2.5 mm.

Further improvement: the included angle between the straight guide groove and the longitudinal direction is 0-15 degrees.

Further improvement: the penetration holes are funnel-shaped, and the maximum diameter is 0.5-2.5 mm

By adopting the technical scheme, the beneficial effects of the utility model are that:

through the arrangement of the convex core body, the sanitary towel is more attached, the infiltration absorption speed of the sanitary towel to menstrual blood is improved, the menstrual blood is absorbed in time when tidal surge occurs, the dryness of the surface of the sanitary towel is ensured, and side leakage or back leakage is avoided. The convex absorption layer is arranged on the convex core body and is divided into a convex area and a non-convex area, the convex area corresponds to the position of the menstrual blood excretion opening of a user, the existing equipment process is not required to be upgraded and improved, the mass ratio of the fluff pulp absorber in the convex area to the fluff pulp absorber in the non-convex area can be larger than 3:1 on the premise that the sanitary towel is not easy to break and deform, and the absorption capacity of menstrual blood is effectively improved. The absorbent paper is characterized in that the fluff pulp absorber on the convex area is wrapped by the e-shaped folded absorbent paper, the fluff pulp absorber can be well wrapped by the e-shaped folded absorbent paper, the common phenomena of caking, fracture and deformation in the prior art are avoided in the using process, and the structure is stable.

The setting in gap can not destroy the wholeness of well protruding core structure, nevertheless can destroy its rigidity, has improved the compliance of well protruding core. In addition, the gaps also improve the shuttling capability of gas from the surface layer to the bottom layer, and the air permeability of the product is enhanced; the gaps can also accelerate the permeation speed of menstrual blood, and the menstrual blood is quickly absorbed and locked by the convex core body, so that the stuffiness and the damp feeling of the surface layer of the sanitary towel are greatly reduced.

Through the arrangement of the outer ring diversion trench and the straight diversion trench, the probability of side leakage and back leakage of menstrual blood is reduced. When menstrual blood flows through the straight diversion grooves, the menstrual blood extends and diffuses along the longitudinal direction of the straight diversion grooves and permeates downwards to be absorbed by the convex core body, so that the utilization rate of the convex core body is improved.

The permeable holes sequentially penetrate through the liquid permeable surface layer, the transmission layer and the convex core body, so that the air permeability of the product can be increased, the menstrual blood can be rapidly infiltrated into the convex core body along the permeable holes, and the damp feeling caused by overlong retention time of the menstrual blood on the liquid permeable surface layer is avoided. In addition, the penetration holes can reduce the rigidity and the strength of the product and increase the softness of the product. Furthermore, the permeation holes are arranged in a funnel shape, so that the reverse osmosis of menstrual blood when the menstrual blood is squeezed by external force can be effectively inhibited.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a sectional view of a sanitary napkin body in the embodiment;

FIG. 3 is an enlarged schematic view of A of FIG. 1;

FIG. 4 is a schematic structural view of a convex core in the embodiment;

FIG. 5 is a schematic structural view of a takerin and a base roller in an embodiment;

FIG. 6 is a schematic structural view of a hollow bar in the embodiment;

fig. 7 is a schematic view of a structure of a prior art recess.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a do:

referring to fig. 1 to 4, a sanitary napkin having a convex core comprises a sanitary napkin body 1, wherein the longitudinal direction of the sanitary napkin body 1 is defined to extend along the length direction, the transverse direction of the sanitary napkin body 1 is defined to extend along the width direction, two sides of the sanitary napkin body 1 are provided with side flaps 2, the bottoms of the side flaps 2 are provided with a back glue (not shown in the figure), the sanitary napkin body 1 comprises a liquid permeable surface layer 3, a transmission layer 4, a convex core 5 and a leakage-proof bottom layer 6 which are sequentially stacked from top to bottom, the transmission layer 4 is a hot air non-woven fabric, the leakage-proof bottom layer 6 is formed by compounding a PE film and a water-repellent non-woven fabric, the convex core 5 comprises a first absorption layer 7 and a second absorption layer 7 which is positioned below the first absorption layer 8, the first absorption layer 7 and the second absorption layer 8 are made of water-absorbent material, in this embodiment, dust-free paper is provided, the convex absorption layer is arranged between the first absorption layer 7 and the second absorption layer 8, the middle convex absorption layer comprises a middle convex area 9 and a non-middle convex area 10, the middle convex area 9 is positioned in the middle of the middle convex absorption layer, the middle convex area 9 corresponds to the position of a menstrual blood excretion opening of a user, the middle convex absorption layer is a fluff pulp absorption body containing SAP, the mass ratio of the fluff pulp absorption body of the middle convex area 9 to the fluff pulp absorption body of the non-middle convex area 10 is 5:1, absorbent paper is wrapped outside the fluff pulp absorption body on the middle convex area 9 and is of an e-shaped folding structure, the absorbent paper is divided into a first layer of absorbent paper 11, a second layer of absorbent paper 12 and a third layer of absorbent paper 13 from top to bottom, a gap 14 is arranged on the middle convex core body 5, the gap 14 penetrates through the middle convex core body 5, an outer ring diversion trench 15 and a straight strip diversion trench 16 are arranged on the liquid-permeable surface layer 3, the outer ring diversion trench 15 is arranged on the peripheral edge of the liquid-permeable surface layer 3, the middle part of liquid permeability surface course 3 is located to straight strip guiding gutter 16, be equipped with the infiltration hole 17 that leaks hopper-shaped on the liquid permeability surface course 3, infiltration hole 17 runs through liquid permeability surface course 3, transmission layer 4, the convex core body 5, and the maximum diameter of infiltration hole 17 is 2.5 mm.

A preparation method of a sanitary towel with a convex core body comprises the following steps of preparing a sanitary towel body:

(1) compounding the first absorption layer, the convex absorption layer and the second absorption layer to form a convex core body, then vertically cutting the convex core body, and cutting downwards from the upper surface of the first absorption layer to penetrate through the whole convex core body to form a gap;

(2) the convex core body is compounded with the transmission layer and the liquid-permeable surface layer, then the punching is carried out through a pressing area between the licker-in roll and the bottom roll to form a penetration hole, then the outer ring diversion trench pressing is carried out on the periphery of the liquid-permeable surface layer, and the straight diversion trench is pressed in the middle of the liquid-permeable surface layer;

referring to fig. 5 and 6, the outer surface of the spike roller 18 is provided with equally spaced spikes 20, the bottom roller 19 is provided with recesses 21 which are matched with the spikes 20, the recesses 21 are hollowed strips, and the hollowed strips are grooves which penetrate through two sides of the bottom roller.

(3) And (3) compounding the semi-finished product obtained in the step (2) with a leakage-proof bottom layer to obtain the sanitary towel body.

The utility model discloses the length in gap is 4 ~ 50mm, and the width is 0.2 ~ 3 mm. The gap and the longitudinal included angle are 0-40 degrees. In the embodiment, the length of the gap is 15mm, the width of the gap is 0.2mm, and the included angle between the gap and the longitudinal direction is 0 degree.

The utility model discloses the degree of depth of outer lane guiding gutter is 0.3 ~ 0.7mm, and the degree of depth of straight guiding gutter is 0.1 ~ 0.5mm, and the length of straight guiding gutter is 5 ~ 20mm, and the width is 0.5 ~ 2.5mm, and straight guiding gutter is 0 ~ 15 with fore-and-aft contained angle. In this embodiment, the depth of the outer ring guide groove is 0.3mm, the depth of the straight guide groove is 0.3mm, the length of the straight guide groove is 10mm, the width of the straight guide groove is 1.5mm, and the included angle between the straight guide groove and the longitudinal direction is 0 °.

The utility model discloses felting needle length on the licker-in is 2 ~ 6mm, and the felting needle cone angle is 15 ~ 45. The lancet in this embodiment is 4mm in length and the lancet cone angle is 15. The convex core body, the transmission layer and the liquid-permeable surface layer are compounded and then enter between the licker-in roller and the bottom roller, the felting needles on the licker-in roller penetrate into the hollowed strips of the bottom roller from the liquid-permeable surface layer, at the moment, the non-hollowed strip areas of the licker-in roller base and the bottom roller clamp the sanitary towel so that the sanitary towel is not displaced, the licker-in roller and the bottom roller continue to rotate, and the felting needles are pulled out from the surface layer of the sanitary towel. The positions of the bottom rollers corresponding to the felting needles are provided with the hollowed holes as concave parts, the structure of the hollowed holes 22 is shown in fig. 7, when the production speed is unstable or the sanitary towel product is thicker, the felting needles and the hollowed holes are slightly staggered, and when the felting needles are pulled out, the felting needles are easy to rub against the walls of the hollowed holes, so that the smoothness of the permeation holes is influenced, and barbs or fine fibers are left on the product. The utility model discloses set up the recess that runs through the bottom roll both sides on the bottom roll as the concave part, the felting needle can not produce the friction with the strip of digging out, and production is easily controlled, and the infiltration hole is more smooth, clear.

The sanitary napkins prepared in the examples are subjected to performance tests of water absorption capacity and absorption speed, and the test method refers to GB/T8939-2018 sanitary napkins (panty liners).

And (3) testing results: the water absorption rate of the convex core body is 52 times, the absorption speed is 29s, and compared with a sanitary towel product without gaps, the absorption speed is improved by 15%.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (4)

1. The utility model provides a sanitary towel that contains convex core, includes the sanitary towel body, and what the definition extended along sanitary towel body length direction is vertical, and what extended along sanitary towel body width direction is horizontal, its characterized in that: the sanitary napkin comprises a sanitary napkin body and is characterized in that the sanitary napkin body comprises a liquid-permeable surface layer, a transmission layer, a convex core body and a leakage-proof bottom layer which are sequentially stacked from top to bottom, the convex core body comprises a first absorption layer and a second absorption layer positioned below the first absorption layer, a convex absorption layer is arranged between the first absorption layer and the second absorption layer and comprises a convex region and a non-convex region, the convex region is positioned in the middle of the convex absorption layer and corresponds to the position of a menstrual blood excretion opening of a user, the convex absorption layer is a fluff pulp absorption body containing SAP, the mass ratio of the fluff pulp absorption body in the convex region to the fluff pulp absorption body in the non-convex region is greater than 3:1, absorbent paper is wrapped outside the fluff pulp absorption body in the convex region and is of an e-shaped folding structure, and the absorbent paper is divided into a first absorbent paper layer from top to bottom, The second floor paper and the third layer paper that absorbs water, be equipped with the gap on the well protruding core, the gap runs through the well protruding core, the length in gap is 4 ~ 50mm, and the width is 0.2 ~ 3mm, gap and fore-and-aft contained angle are 0 ~ 40, be equipped with outer lane guiding gutter and vertical bar guiding gutter on the liquidity surface course, the week edge of liquidity surface course is located to the outer lane guiding gutter, the middle part of liquidity surface course is located to the vertical bar guiding gutter, the degree of depth of outer lane guiding gutter is 0.3 ~ 0.7mm, the degree of depth of vertical bar guiding gutter is 0.1 ~ 0.5mm, be equipped with the infiltration hole on the liquidity surface course, the infiltration hole runs through liquidity surface course, transmission layer, well protruding core.

2. A sanitary napkin having a convex core according to claim 1, wherein: the length of the straight diversion trench is 5-20 mm, and the width of the straight diversion trench is 0.5-2.5 mm.

3. A sanitary napkin having a convex core according to claim 1, wherein: the included angle between the straight guide groove and the longitudinal direction is 0-15 degrees.

4. A sanitary napkin having a convex core according to claim 1, wherein: the penetration hole is funnel-shaped, and the maximum diameter is 0.5-2.5 mm.

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