CN214909283U

CN214909283U - Composite core body with high permeation, diffusion and absorption

Info

Publication number: CN214909283U
Application number: CN202021957403.2U
Authority: CN
Inventors: 陈少俊
Original assignee: Fujian Lansiber Sanitary Products Co ltd
Current assignee: Fujian Lansiber Sanitary Products Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-11-30
Anticipated expiration: 2030-09-09

Abstract

The utility model relates to a high infiltration diffusion absorptive composite core, which is composed of a first covering layer, a second covering layer and an absorbing layer which is arranged between the first covering layer and the second covering layer and is formed by laminating and connecting more than one layer of absorbing core bodies, and fixedly connecting all the layers into a whole, wherein, the absorbing layer is provided with an infiltration diffusion absorptive reinforcement body which comprises a longitudinal slot, the longitudinal slot is arranged at the center of the width direction of the absorbing layer, both ends of the longitudinal slot extend along the length direction of the absorbing layer, the surface layer of the absorbing layer vertically penetrates through the bottom layer in the thickness direction of the absorbing layer, a plurality of transverse slots are respectively arranged at both sides of the longitudinal slot along the longitudinal length direction of the longitudinal slot at intervals, one end of each transverse slot at each side is communicated with the longitudinal slot, and the other end is far away from the longitudinal slot, and extends toward the side edge of the absorption layer, thereby forming the penetration diffusion absorption reinforcement body with a crisscross communication structure.

Description

Composite core body with high permeation, diffusion and absorption

Technical Field

The utility model belongs to the technical field of disposable health care products, concretely relates to high infiltration diffusion absorption's compound core.

Background

Absorbent articles, i.e. diapers, are disposable protective undergarments which are heavily worn by infants and adults and are primarily intended to absorb urine discharged by infants and incontinence in the elderly. The diaper absorbing product has the advantages of convenient carrying, no need of cleaning, convenient replacement and the like, and brings great convenience to the daily sanitary life of people.

The existing absorbent products generally comprise a surface layer, a flow guiding layer, an absorption layer, a bottom film and other functional parts, but the key for determining the absorption performance of the absorbent products is an absorption core, namely a traditional absorption core, which is formed by blending fluff pulp fibers and super absorbent resin particles, the traditional absorption core has the advantage of rapid absorption, but also has the problem of serious liquid rewet, so the traditional absorption core is gradually replaced by a second generation absorption core with excellent rewet performance, namely a composite absorption core.

At present, the composite absorbent core has become the mainstream core material of the absorbent product, and has the characteristics of drop resistance, no fault, no lump and extremely ultra-thin, so that the composite absorbent core is widely favored by Chinese consumers. Most of the current composite absorbent cores are of 5-layer structure: the fluffy cotton comprises an upper covering layer, a lower covering layer and fluffy cotton in the middle, wherein high-molecular water-absorbing particles are clamped on two side faces of the fluffy cotton, a high-molecular material main body is distributed between fluffy cotton fiber nets, and a non-woven fabric layer is generally arranged on the outermost layer for edge covering. However, the composite absorbent core also has the disadvantages of slow liquid penetration, diffusion and absorption, and the structure of the composite core severely inhibits the absorption performance of the super absorbent resin. In response to the above-mentioned drawbacks, various diaper manufacturers optimize composite absorbent cores, such as: the upper layer and the lower layer of the high polymer material are replaced, the groove is opened, the material of the upper covering layer and the lower covering layer is replaced, and the stereoscopic impression and the size of the gap of the fluffy cotton are finely adjusted.

The prior art CN109009683A discloses a diaper core body capable of being absorbed quickly, which comprises a composite core body, a polymer and fluff pulp short pulp layer and a wrapping layer, wherein the polymer and fluff pulp short pulp layer is arranged on the composite core body, the polymer and fluff pulp short pulp layer is wrapped by the wrapping layer, and the wrapping layer is pressed on the bottom layer of the composite core body.

Prior art CN109044632A discloses a core for rapid absorption of sanitary products, which comprises, from top to bottom: the accelerating layer is provided with short wood pulp fibers, the absorbing layer is provided with long plant fibers, and the area of the accelerating layer is smaller than that of the absorbing layer. The absorption layer is provided with a buffer water locking mechanism of 'instant absorption-slow release' for liquid before entering the absorption layer by arranging the acceleration layer and the flow guide layer, so that the liquid absorption time and the liquid absorption contact surface of the absorption layer are increased, and the technical effects of improving the liquid absorption performance of the absorption layer and preventing side leakage are achieved.

In addition, in order to increase the speed of absorbing the core of the disposable hygiene care product in the prior art, there are techniques such as punching the core of the disposable hygiene care product and making slits on the core of the disposable hygiene care product, and after these techniques are implemented, the absorption speed of the core of the disposable hygiene care product is increased greatly, but it cannot be denied that: if the shape and structure of the gaps are not designed reasonably, the absorption performance of the composite absorbent core is affected, the effect of permeation, diffusion and absorption cannot be improved, and the super absorbent resin particles may overflow from the gaps, so that raw material waste is caused, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough among the prior art, the utility model aims to provide a to the high infiltration of liquid, high diffusion and high absorption performance, can avoid spilling over of super absorbent resin granule again and spill the compound core of hourglass to realize through following technical scheme:

high infiltration diffusion absorptive composite core from top to bottom by first overburden, second overburden, and be located between first overburden, the second overburden and by the absorption core more than one deck through the absorbed layer that the range upon range of connection formed constitute to as an organic whole with each layer fixed connection, its structural feature is: the absorption layer is provided with a penetration diffusion absorption reinforcing body, the penetration diffusion absorption reinforcing body comprises a longitudinal slit, the longitudinal slit is positioned in the center of the width direction of the absorption layer, two ends of the longitudinal slit extend along the length direction of the absorption layer, the surface layer of the absorption layer vertically penetrates through the bottom layer in the thickness direction of the absorption layer to form the communicated longitudinal slit, meanwhile, a plurality of transverse slits are respectively arranged at intervals on two sides of the longitudinal slit along the longitudinal length direction of the longitudinal slit, one end of each transverse slit on each side is integrally communicated with the longitudinal slit, and the other end of each transverse slit is far away from the longitudinal slit and extends towards the side edge direction of the absorption layer, so that the penetration diffusion absorption reinforcing body with a crisscross communication structure is formed.

On the basis of the technical scheme, the transverse slits on the same side of the longitudinal slit are respectively formed by a front-section transverse slit on the front section of the absorption layer and a rear-section transverse slit on the rear section of the absorption layer by taking the position of the absorption layer corresponding to the center of the crotch as a reference, and the other end of each front-section transverse slit is far away from the other end of each rear-section transverse slit.

Preferably, the transverse slits on both sides of the longitudinal slit are arranged in an axisymmetric distribution. In other embodiments, however, the slots are staggered on opposite sides of the slot.

Preferably, the longitudinal slit and the transverse slit form an angle of 30-75 deg.

Preferably, the distance between the two ends of the longitudinal slits and the longitudinal end of the absorption layer is 5-15cm, preferably 10-12cm, and the distance between the end of each transverse slit far away from the longitudinal slit and the side edge of the absorption layer is 1-3cm, preferably 2-3 cm.

The utility model discloses the beneficial effect who realizes does:

firstly, the utility model discloses vertical gap, horizontal gap seam are as an organic whole connectivity, provide the inflation space for the imbibition of the super absorbent polymer in the composite core body, avoid the super absorbent polymer in the current composite core body to receive the restraint to restrain because of imbibition inflation space and lead to the condition that its imbibition ability descends by a wide margin, if its imbibition ability only is 60% -75% of super absorbent polymer imbibition rate under free state.

Secondly, the utility model discloses an aspect sets up vertical slot, horizontal slot to the contained angle 30-75, and the direction of each horizontal slot of anterior segment sets up to keep away from each other with the other end of each horizontal slot of back end on the other hand. The composite core body has the advantages that the liquid can be promoted to be comprehensively diffused along the front section and the rear section of the composite core body, so that the permeation diffusion capacity of the liquid is enhanced, the utilization rate of the composite core body is improved, and the liquid absorption capacity of the composite core body is promoted.

Thirdly, the longitudinal gap and the transverse gap of the utility model are in the shape of cutting marks, and the two side surfaces of the gap are separated from each other and connected with each other in a contact way, thereby avoiding the phenomena that the super absorbent resin particles overflow from the gap and are leaked in the molding process of the composite core body.

Finally, the two ends of the longitudinal slits are respectively away from the longitudinal ends of the absorption layer, and each end of the transverse slits far away from the longitudinal slits is arranged at a certain distance from the side edge of the absorption layer, so that the softness of the composite core is increased, and the dry and wet strength of the composite core is not influenced.

Drawings

Fig. 1 is a schematic cross-sectional structure of an absorbent article.

Fig. 2 is a schematic view of the permeation diffusion absorption reinforcement body provided with the axial symmetric distribution of the transverse slits.

Fig. 3 is a schematic structural view taken along a-a with respect to fig. 2.

Fig. 4 is a schematic structural view taken along B-B with respect to fig. 2.

FIG. 5 is a schematic view of the permeation diffusion absorption reinforcement with staggered transverse slit intervals.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-5, the absorbent article of the present invention comprises a liquid permeable top layer 2, a liquid impermeable bottom layer 4 and an absorbent layer located between the liquid permeable top layer and the liquid impermeable bottom layer, wherein the absorbent layer is a composite core 1 with high permeability, diffusion and absorption. The composite core body 1 with high permeation, diffusion and absorption is the same as the existing composite core body, and is composed of a first covering layer, a second covering layer and an absorption layer which is positioned between the first covering layer and the second covering layer and is formed by more than one layer of absorption core body through laminated connection, and all the layers are fixedly connected into a whole.

The high-permeability diffusion-absorption composite core body 1 is characterized in that: and the absorption layer is provided with a penetration diffusion absorption reinforcing body, and the penetration diffusion absorption reinforcing body is implemented by the following method:

first, the penetration, diffusion, absorption and reinforcement member includes a longitudinal slit 11, the longitudinal slit 11 is located at the center of the width direction of the absorbent layer, both ends of the longitudinal slit 11 extend along the length direction of the absorbent layer, and the longitudinal slit 11 is formed to be communicated with the surface layer of the absorbent layer and to vertically penetrate the bottom layer in the thickness direction of the absorbent layer.

Secondly, along the longitudinal length direction of the longitudinal slot 11, a plurality of transverse slots are respectively arranged at intervals on two sides of the longitudinal slot 11, one end of each transverse slot on each side is integrally communicated with the longitudinal slot, and the other end of each transverse slot is far away from the longitudinal slot and extends towards the side edge direction of the absorption layer. Specifically, a transverse slit 121A, a transverse slit 122A, a transverse slit 123A and a transverse slit 124A are provided at intervals on the left side of the longitudinal slit 11, and a transverse slit 121B, a transverse slit 122B, a transverse slit 123B and a transverse slit 124B are provided at intervals on the right side of the longitudinal slit 11, each of the transverse slits having one end integrally connected to the longitudinal slit 11 through the same, and the other end extending away from the longitudinal slit 11 toward the side edge of the absorbent layer at an included angle of 30 ° to 75 °, thereby forming the permeation diffusion absorption reinforcement member of the criss-cross communication structure.

The criss-cross integrated communication structure provides expansion space for the liquid absorption of the super absorbent resin in the composite core, and avoids the situation that the liquid absorption capacity of the super absorbent resin in the existing composite core is greatly reduced due to the restrained and restrained liquid absorption expansion space, such as the liquid absorption capacity is only 60-75% of the liquid absorption capacity of the super absorbent resin in a free state.

Based on the above-mentioned embodiments, in order to further promote the liquid to be diffused all over along the front section and the rear section of the composite core simultaneously, enhance the penetrating and diffusing capability to the liquid, improve the utilization rate of the composite core, and promote the liquid absorbing capability of the composite core, the present invention further uses the position of the absorbent layer corresponding to the center of the crotch as a reference, the transverse slit located at the left side of the longitudinal slit 11 is composed of the transverse slit 121A and the transverse slit 122A located at the front section of the absorbent layer, and the transverse slit 123A and the transverse slit 124A located at the rear section of the absorbent layer, respectively, the included angles 13 between the transverse slit 121A and the transverse slit 122A and the longitudinal slit 11 are 30 ° -75 °, and the included angles 13 between the transverse slit 123A and the transverse slit 124A and the longitudinal slit 11 are 30 ° -75 °, so that the direction of each front section transverse slit is set to be away from the other end of each rear section transverse slit, such as the other end of the transverse slot 122A and the other end of the transverse slot 123A, are remote from each other. Similarly, the transverse slot 121B, the transverse slot 122B, the transverse slot 123B, and the transverse slot 124B on the right side of the longitudinal slot 11 have the same structural features.

In the specific implementation mode, in order to improve the aesthetic degree, the transverse slits on two sides of the longitudinal slit are arranged in an axisymmetric distribution mode. In other embodiments, however, the slots are staggered on opposite sides of the slot.

Furthermore, in order to increase the softness of the composite core without affecting the dry and wet strength of the composite core, the longitudinal slits 11 are each spaced from the longitudinal ends of the absorbent layer by a distance of 5-15cm, preferably 10-12 cm. Meanwhile, the end of each transverse slit far away from the longitudinal slit is 1-3cm, preferably 2-3cm away from the side edge of the absorption layer.

Because the longitudinal gap and the transverse gap of the utility model are in the shape of cutting marks, the two side surfaces of the gap are mutually separated and mutually contacted and connected, thereby avoiding the phenomena that the super absorbent resin particles overflow from the gap and are leaked in the molding process of the composite core body.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a high infiltration diffusion absorbing's composite core, from top to bottom by first overburden, second overburden, and be located between first overburden, the second overburden and by the absorption core more than one deck through the absorbed layer that range upon range of connection formed constitute to as an organic whole with each layer fixed connection, its characterized in that: the absorption layer is provided with a penetration diffusion absorption reinforcing body, the penetration diffusion absorption reinforcing body comprises a longitudinal slit, the longitudinal slit is positioned in the center of the width direction of the absorption layer, two ends of the longitudinal slit extend along the length direction of the absorption layer, the surface layer of the absorption layer vertically penetrates through the bottom layer in the thickness direction of the absorption layer to form the communicated longitudinal slit, meanwhile, a plurality of transverse slits are respectively arranged at intervals on two sides of the longitudinal slit along the longitudinal length direction of the longitudinal slit, one end of each transverse slit on each side is integrally communicated with the longitudinal slit, and the other end of each transverse slit is far away from the longitudinal slit and extends towards the side edge direction of the absorption layer, so that the penetration diffusion absorption reinforcing body with a crisscross communication structure is formed.

2. The high osmotic diffusion absorbent composite core of claim 1, wherein: and the transverse gaps positioned on the same side of the longitudinal gaps are both formed by front-section transverse gaps and rear-section transverse gaps by taking the central position of the absorption layer corresponding to the crotch as a reference, and the other end of each front-section transverse gap is far away from the other end of each rear-section transverse gap.

3. The high osmotic diffusion absorbent composite core of claim 2, wherein: the transverse slits on both sides of the longitudinal slit are arranged in an axisymmetric distribution.

4. The high osmotic diffusion absorbent composite core of claim 2, wherein: the transverse slits on both sides of the longitudinal slit are arranged alternately.

5. The high osmotic diffusion absorbent composite core according to any of claims 1-4, wherein: the included angle between the longitudinal gaps and the transverse gaps is 30-75 degrees.

6. The high osmotic diffusion absorbent composite core according to any of claims 1-4, wherein: the distance between the two end parts of the longitudinal slits and the longitudinal end part of the absorption layer is 5-15cm, and the distance between the end part of each transverse slit far away from the longitudinal slits and the side edge of the absorption layer is 1-3 cm.