CN113230036B

CN113230036B - Sea-buckthorn oil slow-release diaper

Info

Publication number: CN113230036B
Application number: CN202110405706.6A
Authority: CN
Inventors: 唐礼荣; 董全喜; 吴宏宇
Original assignee: Hangzhou Qiandaohu Tianxin Co ltd
Current assignee: Hangzhou Qiandaohu Tianxin Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2022-10-14
Anticipated expiration: 2041-04-15
Also published as: CN113230036A

Abstract

The invention relates to the field of paper diapers, in particular to a sea buckthorn oil slow-release diaper which comprises a double-layer absorption core, a circular glue-spraying basement membrane and an elastic waistband structure, wherein the circular glue-spraying basement membrane is arranged on the outer edge of the double-layer absorption core in a surrounding mode, the elastic waistband structure is arranged at the end part of the diaper, the double-layer absorption core comprises an absorption layer and a skin-friendly layer, the absorption layer comprises an absorption core main body and a liquid absorption part, and the skin-friendly layer covers the upper end of the liquid absorption part and is fixedly connected with the liquid absorption part; the skin-friendly layer consists of a skin and an inner core, the skin covers the inner core, and the inner core contains the seabuckthorn oil slow-release microspheres. The invention overcomes the defects that the prior paper diaper can not protect the delicate skin of the infant, the phenomena of drying crack, roughness, diaper rash and the like can occur after the prior paper diaper is used for a long time, and simultaneously, the liquid absorption rate is slower, and the liquid can not be uniformly distributed, has the advantages of capability of moistening the skin of the buttocks of the infant for a long time, effective protection of the health of the fat membrane of the buttocks of the infant, high urine absorption rate, large absorption amount, ventilation and softness.

Description

Sea-buckthorn oil slow-release diaper

Technical Field

The invention relates to the field of paper diapers, in particular to a sea buckthorn oil slow-release diaper.

Background

The diaper is a daily use article for babies and is a general name of paper diapers, paper diapers and pull-up pants. The dry and comfortable diaper can keep the baby asleep all night, and is commonly called as the diaper due to strong water absorption.

The prior paper diaper is a sanitary product commonly used by infants. Generally, diapers are composed of three main parts: surface coating layer, absorption core layer and base fabric. The coating layer is tightly attached to the body of a baby, can promote the urine to quickly permeate and effectively prevent the urine from permeating back, so that the surface layer of the diaper is kept dry and comfortable. While the main function of the absorbent core layer is to be able to acquire and rapidly absorb urine, to disperse it or to spread it throughout the core layer by capillary action, and finally to absorb and store urine.

Normal healthy skin is maintained by the natural barrier of the skin itself. The natural barrier is just like a brick wall, can protect the skin, enables the skin to have natural water-locking and moisture-preserving capability, and can resist the stimulation of foreign matters to adults mainly comprises a sebum membrane and a cuticle, while infants mainly cover a layer of sebum membrane on the skin surface of the infants because the skin is incompletely developed. However, when washing the face or bathing, the sebum membrane surrounding the skin surface is washed off. The skin without the protection of the sebum membrane can generate allergic phenomena such as chapping, roughness, diaper rash and the like when being stimulated by external environment.

The paper diapers on the market mainly focus on the absorption of liquid and drying, but no corresponding relation is made on how to protect the sebum membrane on the skin surface of the infant. For example, an application number is CN 201821148530.0's a super soft extremely thin baby diaper, including the diaper body, the tensile cloth of top fixedly connected with of diaper body, the waist behind the equal fixedly connected with diaper of both sides outer wall of tensile cloth, a side fixedly connected with elastic webbing of tensile portion is kept away from to the waist behind the diaper. This super gentle extremely thin baby diaper makes hydrophilic cloth be close to the leak protection cloth through the splice bar, reaches the effect that reduces diaper body thickness, and the indentation makes and plays fixed action to hydrophilic cloth and leak protection cloth, makes the diaper body facilitate the use, and it is bamboo fiber cloth to pass through hydrophilic cloth, and the leak protection cloth is woven with polyester through woven with polyester, and woven with polyester has better pliability, makes things convenient for diaper body laminating skin, reduces the hindrance of diaper body to baby's activity. However, the diaper cannot be used for protecting a sebum membrane on the surface of the skin of an infant, and can cause undesirable phenomena such as drying crack, roughness, diaper rash and the like after long-term use.

Disclosure of Invention

The invention provides a sea buckthorn oil slow-release diaper which can effectively protect the skin of an infant and has a high liquid absorption rate, and aims to overcome the defects that the existing paper diaper can not protect the delicate skin of the infant, can have the undesirable phenomena of dry cracking, roughness, diaper rash and the like after being used for a long time, and simultaneously has a low liquid absorption rate and can not be uniformly distributed.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a sea buckthorn oil slow-release diaper comprises a double-layer absorption core, a back-type glue-spraying base film and an elastic waistband structure, wherein the back-type glue-spraying base film is arranged around the outer edge of the double-layer absorption core, the elastic waistband structure is arranged at the end part of the diaper, the double-layer absorption core comprises an absorption layer and a skin-friendly layer, the absorption layer comprises an absorption core main body and a liquid absorption part, the absorption core main body is respectively a first absorption layer and a second absorption layer from top to bottom, the liquid absorption part is respectively a first spinning layer, a second spinning layer and a third spinning layer from top to bottom, the first spinning layer, the second spinning layer and the third spinning layer are respectively and mutually arranged with the first absorption layer and the second absorption layer, and the skin-friendly layer covers the upper end of the interpenetration part and is fixedly connected with the imbibition part; the skin-friendly layer consists of a skin and an inner core, the inner core is coated by the skin, and the inner core contains the seabuckthorn oil slow release microspheres.

The part of the seabuckthorn oil slow-release diaper which absorbs urine is a double-layer absorption core, wherein the absorption layer of the absorption layer mainly absorbs urine, and the absorption layer has a multi-layer structure, so that the urine can be absorbed by the absorption core main body along with the capillary action after the liquid absorption part absorbs the urine, and the absorption rate of the urine is high and the absorption capacity of the urine is correspondingly increased due to the plurality of absorption core main bodies and the plurality of liquid absorption parts.

In addition, the invention also adds a skin-friendly layer which is directly contacted with the skin of the infant, and the inner core of the skin-friendly layer is coated with the seabuckthorn oil sustained-release microspheres, so that the seabuckthorn oil in the microspheres can be gradually released along with the use. Researches show that the main components of the seabuckthorn oil contain flavone, vitamins, phytosterol, trace elements and alpha-tocopherol besides unsaturated fatty acid, the seabuckthorn oil is taken as medicinal oil in Chinese pharmacopoeia, and the seabuckthorn oil has good effect for oral administration and external use because the seabuckthorn oil contains various nutritional components. The sea buckthorn oil is smeared on the buttocks of a newborn, so that the red buttocks of the newborn can be effectively reduced, and the effect is more excellent compared with the paraffin oil. Therefore, the sea buckthorn oil is added in the invention, which can effectively moisten the skin of the infant, so that the skin lipid film on the surface of the skin can effectively exist, and adverse reactions such as allergy, chapping, roughness, diaper rash generation and the like are reduced.

Meanwhile, the seabuckthorn oil is gradually released, so that the seabuckthorn oil has a long-acting protection effect, and adverse reactions such as pore blockage and allergy caused by excessively greasy skin of an infant can be avoided.

Preferably, the first and second absorbent layers are provided with first and second channels parallel to the longitudinal direction of the liquid-absorbing portion, respectively.

The absorption core main body consists of a first absorption layer and a second absorption layer, wherein a first diversion trench and a second diversion trench which are parallel to the length direction of the liquid absorption part are arranged on the first absorption layer and the second absorption layer, and the diversion trenches are used for uniformly dispersing liquid absorbed in the liquid absorption part into the first absorption layer through the diversion trenches, so that the problem that part of the diaper is excessively absorbed and the liquid absorption amount is lower is solved.

The volume of the water absorption capsule can be rapidly expanded after absorbing liquid such as urine, the expanded water absorption capsule loses water absorption and can block liquid flow, so that the existing three-layer structure absorption core or five-layer structure absorption core can cause gaps among the water absorption capsules to disappear after the water absorption capsule contained in the three-layer structure absorption core or five-layer structure absorption core is expanded, the liquid can not circulate and can be accumulated after a certain degree, a large amount of water absorption capsules at the two ends of the longitudinal direction of the liquid absorption part are difficult to contact and absorb the liquid, and the large amount of water absorption capsules are actually in a useless state, generally, in the use of diaper, pull-up diaper and the like, the use length of the existing water absorption and absorption liquid part only accounts for about 30 percent of the total length, and the use length of the part provided with a single groove can only reach 40 percent.

In the technical scheme of the invention, after the first absorption layer is provided with the two first diversion grooves, the total use length can reach more than 40%, in addition, the first diversion grooves and the second diversion grooves form an energy gradient after being staggered, so that liquid can be absorbed by the lower layer of the second absorption layer more easily, the contact part of the upper layer and skin can be kept dry and comfortable, namely, the first absorption layer is more beneficial to the circulation of the liquid to a certain extent, the use length of the absorption wicking liquid part can be further increased, the use length of the absorption wicking liquid part can reach at least 50% of the total length of the absorption wicking liquid part through the staggered second diversion grooves and the first diversion grooves, the increase of the use length not only can reduce the waste of the water absorption capsules, but also can absorb more liquid, and generate more excellent technical effects.

Preferably, at least two first diversion trenches are arranged; the second diversion trench is provided with at least one diversion trench, and the first diversion trench and the second diversion trench are arranged in a staggered mode.

According to the invention, the first absorption layer is arranged above the second absorption layer, so that the urine absorbed by the first absorption layer is certainly far greater than the urine absorbed by the second absorption layer, the number of the first diversion grooves is set to be at least two, the number of the second diversion grooves is set to be at least one, the urine can be effectively and rapidly dispersed, and meanwhile, the first diversion grooves and the second diversion grooves are arranged in a staggered manner, so that the diversion can be carried out through the diversion grooves no matter where the urine permeates, and the problem of liquid leakage is prevented.

Preferably, the first, second and third spun yarn layers are non-woven fabrics, cotton fabrics or fiber fabrics.

The non-woven fabric, the cotton fabric or the fiber fabric has good lyophilic effect and good air circulation effect, so that the defect of sultry can be caused.

Preferably, the first absorption layer and the second absorption layer are respectively composed of water absorption capsules, and the surfaces of the water absorption capsules are coated with the seabuckthorn oil slow release layer. The release of the seabuckthorn oil is enhanced by arranging the seabuckthorn oil slow release layer on the water absorption capsule.

Preferably, the outer skin in the skin-friendly layer is a wood pulp outer skin, and the inner core is a cotton core.

Preferably, the preparation method of the seabuckthorn oil slow-release microspheres in the inner core comprises the following steps: dissolving appropriate amount of PLA and at least one of polyethylene glycol and polycaprolactone in appropriate amount of dichloromethane, adding oleum Hippophae into the mixed solution, mixing, spray drying to obtain oleum Hippophae slow release microsphere, and storing in a drier.

Preferably, the mass ratio of the PLA, the polyethylene glycol, the polycaprolactone to the seabuckthorn oil is (5-15): (5-10): (1-3): 1, spray drying operating conditions: the air inlet temperature is 110-125 ℃, the atomization pressure is 0.5-0.6 bar, and the rotation speed of the peristaltic pump is 10-15 RPM.

The seabuckthorn oil slow-release microspheres are prepared from PLA (polylactic acid) and seabuckthorn oil coated by polyethylene glycol, when the seabuckthorn oil is added into a mixed solution, because mist sprayed in a spray drying process of the PLA in which the seabuckthorn oil is dissolved and the polyethylene glycol solution is of a spherical structure, when dichloromethane solution in the seabuckthorn oil volatilizes, a certain amount of seabuckthorn oil can be coated inside the seabuckthorn oil slow-release microspheres after drying and forming due to the PLA and the polyethylene glycol which are solid materials, and the seabuckthorn oil slow-release microspheres coated with the seabuckthorn oil are formed. Because PLA has lipophilicity, and polyethylene glycol is hydrophilic, the seabuckthorn oil is grease, and the polyethylene glycol is dissolved after meeting moisture in urine, the seabuckthorn oil can slowly seep out from the PLA part in the shell formed by the PLA and the polyethylene glycol, thereby achieving the effect of slow release. And the PLA and the PCL are mixed to generate phase separation, and the release of the seabuckthorn oil can be enhanced.

As preferred, bilayer absorbs core outward flange a week and still encircles and be provided with the one deck and return the type and spout the basement membrane of glue, it includes rete and adventitia to return the type and spout the basement membrane of glue, and edge is through sticky mode fixed connection about rete and the adventitia.

In the existing basement membrane, the mode that the whole inner side surface of the breathable film is coated with glue is adopted to be bonded with the waterproof oil film, after the bonding in the mode is adopted, the formed basement membrane is poor in breathability, particularly in the middle of the basement membrane, the breathability of a glue layer formed after the glue material is coated and solidified is poor, so that the breathability of the whole basement membrane is reduced, the moisture of a crotch part is difficult to discharge and is coated when the baby diaper is used, and the skin problems such as eczema are easily caused.

According to the technical scheme, the glue spraying structure is improved, so that the glue layer for connecting the breathable film and the waterproof oil film forms a circular shape, the glue spraying structure is not the traditional front glue spraying structure, the coverage area of the glue layer is reduced, the breathability of the whole basement membrane can be greatly improved, and the skin problems caused by the fact that moisture is too heavy, such as eczema, can be effectively avoided.

Preferably, the elastic waistband structure comprises a hair side belt with hair sides at two ends and a hook side belt with hook sides at two ends, and the hook side belt is provided with a plurality of hooks for hooking the hair sides.

On the basis of the existing diaper, an elastic waistband with a magic tape is usually arranged for improving the wearing stability of the diaper, but the elastic waistband arranged on the existing diaper has certain defects, and the main problem lies in the arrangement mode of a hook face of the magic tape, almost the whole face of the existing hook face is provided with bristles for connecting and hooking the bristle face, but the arrangement mode can improve the hardness of the hook face, so that the wearing comfort of an infant is poor after wearing the diaper, the skin of the infant is easy to scratch, and the arrangement mode can cause that the hook face of the magic tape and the bristle face are more troublesome to tear after hooking and are needed to tear with larger force, and the hook face of the structure is also easy to generate the problems of edge raising and the like;

in the technical scheme of the invention, the hook surface is improved, the mode of arranging the burrs on the whole surface is improved into an intermittent mode, the hooks with the burrs are uniformly arranged, and the hooks are connected with the burr surface, so that the edge raising of the hook surface can be avoided, the stability of connection between the hook surface and the burr surface can be ensured, the hook surface is softer, the skin of an infant is not easy to scratch and rub, the tearing process is more convenient, and a larger force is not needed.

Therefore, the invention has the following beneficial effects:

(1) The absorption rate of urine is high, and the absorption amount of urine is large;

(2) The skin of the buttocks of the baby can be moistened for a long time, and the sebum membrane of the buttocks of the baby is effectively protected;

(3) Is breathable and soft, and can not scratch the skin of the infant.

Drawings

FIG. 1 is a schematic diagram of a structure of the present invention.

Figure 2 is a schematic top view of a dual layer absorbent core of the present invention.

Fig. 3 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2 in accordance with the present invention.

Fig. 4 is a schematic top view of a rectangular adhesive-coated film according to the present invention.

Fig. 5 is a cross-sectional view taken along line B-B of fig. 4 in accordance with the present invention.

Fig. 6 is an enlarged view of the invention at a in fig. 1.

Fig. 7 is an enlarged view of the invention at b in fig. 1.

Wherein: the double-layer absorbent core 100, the absorbent layer 110, the absorbent core main body 111, the liquid absorption part 112, the first absorbent layer 113, the second absorbent layer 114, the first yarn layer 115, the second yarn layer 116, the third yarn layer 117, the first guide groove 118, the second guide groove 119, the skin-friendly layer 120, the outer skin 121, the inner core 122, the seabuckthorn oil slow-release microspheres 123, the water-absorbent capsules 124, the reverse-shaped glue-spraying base film 200, the inner film layer 201, the outer film layer 202, the elastic waistband structure 300, the hair side belt 301, the hook side belt 302 and the hook fastener 303.

Detailed Description

The invention is further described with reference to the drawings and the detailed description. The following description of the embodiments is provided to facilitate the understanding and appreciation of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the following embodiments, and those skilled in the art should, in light of the present disclosure, appreciate that various modifications and changes can be made without departing from the scope of the invention.

Example 1

As shown in the figures 1-7 of the drawings,

a oleum Hippophae slow release diaper comprises:

a dual layer absorbent core 100, the dual layer absorbent core 100 comprising an absorbent layer 110 and a skin-friendly layer 120:

wherein the absorption layer 110 is used for realizing the function of absorbing liquid such as urine, and the like, and specifically comprises: an absorbent core main body 111 and liquid absorption parts 112 alternately arranged above and below the absorbent core main body 111;

the absorption core main body 111 is respectively provided with a first absorption layer 113 and a second absorption layer 114 from top to bottom, the first absorption layer 113 and the second absorption layer 114 are formed by water absorption capsules 124 with SAP pellets, the surfaces of the water absorption capsules are coated with a seabuckthorn oil slow release layer, the composition of the seabuckthorn oil slow release layer is the same as that of the seabuckthorn oil slow release balls, and the seabuckthorn oil slow release layer is prepared by spraying dichloromethane solution.

The first absorbing layer 113 and the second absorbing layer 114 are respectively provided with a first flow guide groove 118 and a second flow guide groove 119 which are parallel to the length direction of the liquid absorbing part 112, and the first flow guide groove 118 is provided with at least two, in the embodiment, 2; the number of the second guiding grooves 119 is 1, in this embodiment, the first guiding grooves 118 are disposed on the left and right sides of the first absorbing layer 113, and the second guiding grooves 119 are disposed in the middle of the second absorbing layer 114, so that the first guiding grooves 118 and the second guiding grooves 119 are disposed in a staggered manner in the vertical position.

Further, the first flow guide grooves 118 are formed by a difference in height between a portion of the first absorbent layer 113 where the water-absorbent capsules 124 are provided and a portion of the second absorbent layer 114 where the water-absorbent capsules 124 are not provided, and the second flow guide grooves 119 are formed by a difference in height between a portion of the second absorbent layer 114 where the water-absorbent capsules 124 are provided and a portion of the second absorbent layer where the water-absorbent capsules 124 are not provided.

Since the SAP is a water-absorbent swelling material, the volume of the water-absorbent capsule 124 is rapidly expanded after absorbing liquid such as urine, the expanded water-absorbent capsule 124 loses water absorbency and hinders the flow of the liquid, so that the existing three-layer structure absorbent core or five-layer structure absorbent core, in which the gaps between the water-absorbent capsules 124 disappear after the water-absorbent capsule 124 is expanded, the liquid cannot circulate and is accumulated to some extent, and a large amount of the water-absorbent capsules 124 at both ends in the longitudinal direction of the liquid-absorbent part 112 are difficult to contact and absorb the liquid, resulting in a large amount of the water-absorbent capsules 124 being practically in a useless state, generally, in the use of diaper, pull-up pants and the like, the using length of the existing absorbent wicking part 112 only occupies about 30% of the total length, and the using length of the part provided with a single groove can only reach 40%.

In the technical scheme of the invention, after the first absorption layer 113 is provided with the two first guide grooves 118, the total use length can reach more than 40%, in addition, after the first guide grooves 118 and the second guide grooves 119 are staggered, an energy gradient is formed, so that liquid is more easily absorbed by the lower second absorption layer 114, the dryness of the contact part of the upper layer and the skin can be kept, namely, the first absorption layer 113 is more beneficial to the circulation of the liquid to a certain extent, the use length of the absorption wicking liquid part 112 can be further increased, the use length of the absorption wicking liquid part 112 can reach at least 50% of the total length through the staggered second guide grooves 119 and the first guide grooves 118, the increase of the use length not only can reduce the waste of the water absorption capsules 124, but also can absorb more liquid, and further generate more excellent technical effects.

The liquid absorbing section 112 is composed of a first spun yarn layer 115, a second spun yarn layer 116, and a third spun yarn layer 117 from the top to the bottom, and the materials of these three layers are preferably a nonwoven fabric, cotton fabric, or fiber fabric, and more preferably an ES hydrophilic fiber surface layer. The ES hydrophilic fiber surface layer has good biocompatibility and water absorption, does not cause damage to human skin or cause allergy and the like, and particularly when the ES hydrophilic fiber surface layer is used on a diaper, due to the fact that the skin of an infant is tender and poor in skin resistance, cloth capable of avoiding the skin of the infant from being damaged and capable of rapidly absorbing moisture needs to be selected to keep the surface of the skin of the infant dry.

The skin-friendly layer 120 covers the upper end of the liquid absorption part 112 and is fixedly connected with the liquid absorption part; the skin-friendly layer 120 is composed of an outer skin 121 and an inner core 122, the outer skin 121 covers the inner core 122, the outer skin 121 in the skin-friendly layer 120 is a wood pulp outer skin 121, and the inner core 122 is a cotton core. The skin-friendly layer 120 is mainly arranged to improve the comfort of a human body when the absorption core is in contact with the human body, and as the capacity of absorbing liquid in the absorption core is mainly provided by the SAP (super absorbent polymer) beads, the SAP beads are high water-absorbing resin and have good water absorption, but the SAP beads which are hard in texture, even and densely distributed are easy to cause discomfort to a user after being swollen after absorbing water, especially when the SAP-friendly layer is used for a series of infant articles such as diapers, paper diapers and pull-ups, the skin of the infant is softer and more fragile, and a relatively humid environment can be generated after the infant urine is absorbed by the infant diapers, the paper diapers, the pull-ups and the like, and the SAP beads are swollen to press the skin of the infant, so that the infant feels uncomfortable, and even skin diseases such as eczema and the like are generated.

According to the skin-friendly layer 120 in the technical scheme, firstly, the wood pulp outer skin 121 and the cotton core inner core 122 are soft and smooth and cannot rub against skin, on the other hand, the wood pulp outer skin 121 also has good air permeability, water permeability and easy drying properties, can permeate liquid easily and can be dried quickly and keep dry at the joint with the skin, the cotton core has good flexibility and also has good air permeability and water permeability, the cotton core can allow liquid to pass through quickly, and after the cotton core is separated and fixed by matching with grid line bodies, the cotton core is easier to enable the water absorption of the cotton core to be reduced while the liquid passes through, and is more difficult to absorb water and dry, so that the dry state of the whole skin-friendly layer 120 is kept, and the use feeling of a user is improved.

The inner core 122 of the invention contains seabuckthorn oil sustained release microspheres 123, the outer side material of the inner core is a PLA outer cavity, and a certain amount of seabuckthorn oil is coated in the PLA outer cavity, and the preparation method comprises the following steps: dissolving 5 parts of PLA and 10 parts of polyethylene glycol in 20 parts of dichloromethane, adding 1 part of seabuckthorn oil into the PLA solution, mixing uniformly, spray-drying to obtain seabuckthorn oil slow-release microspheres 123, and storing in a dryer for later use; spray drying operating conditions: the air inlet temperature is 110 ℃, the atomization pressure is 0.5bar, and the rotation speed of the peristaltic pump is 10RPM.

The double-layer absorbent core 100 of the invention is also provided with a layer of back-shaped glue-spraying base film 200 around the outer edge, which comprises an inner film layer 201 and an outer film layer 202 that are fixedly connected at the upper and lower edges in a mutual gluing way. The inner film layer 201 is fixedly connected with the absorbent core of the diaper, the inner film layer 201 is a breathable film, the outer film layer 202 is a waterproof oil film, the breathable film is bonded with the waterproof oil film, glue is sprayed on the inner side of the breathable film along the edge of the breathable film to form a back-shaped glue layer, and the breathable film and the waterproof oil film are fixedly bonded through the back-shaped glue layer.

In the existing basement membrane, the whole inner side surface of the breathable membrane is glued with a waterproof oil film, after the gluing in the form is adopted, the formed basement membrane has poor air permeability, particularly, in the middle of the basement membrane, the glue layer formed after the glue material is solidified is poor in air permeability, so that the air permeability of the whole basement membrane is reduced, the moisture is difficult to discharge when the baby uses the diaper, the moisture of the covered crotch part is heavy, and skin problems such as eczema and the like are easily caused;

according to the technical scheme, the glue spraying structure is improved, so that the glue layer for connecting the breathable film and the waterproof oil film is formed into a shape of a Chinese character hui instead of the traditional front glue spraying, the coverage area of the glue layer is reduced, the air permeability of the whole basement membrane can be greatly improved, and the skin problems caused by excessive moisture such as eczema can be effectively avoided.

On the other hand, because the adhesive layer has certain hardness, in the technical scheme of the invention, the coverage area of the adhesive layer is reduced, the flexibility of the basement membrane can be further improved, and the comfort level of the infant in use is improved.

The invention also comprises an elastic waistband structure 300, wherein the elastic waistband structure 300 comprises a hair side belt with hair sides at two ends and a hook side belt 302 with hook sides mutually matched with the hair sides at two ends, the main bodies of the two waistband bodies are elastic belt bodies and are respectively arranged at two ends of the length direction of the diaper, the width of each waistband body is 1-6 cm, and the waistband structure can be adjusted according to factors such as the size of the diaper and the like. The belt body main bodies of the surface belt and the hook surface belt 302 are elastic belt bodies;

be equipped with a plurality of collude knot 303 that are used for colluding even hair side on colluding the face, collude to be equipped with on the face at least 10 shapes and be circular or oval-shaped colluding knot 303, collude knot 303 and be isosceles triangle or isosceles trapezoid and distribute on colluding the face to interval is more than or equal to 1mm between two adjacent colluding knot 303, collude the thorn hair that the knot 303 surface was equipped with harder area hook, can collude even on hair side, make hair side area and collude face area 302 realize connecting through the cooperation of hair side and hook side.

On the basis of the existing diaper, an elastic waistband with a magic tape is usually arranged for improving the wearing stability of the diaper, but the elastic waistband arranged on the existing diaper has certain defects, and the main problem lies in the arrangement mode of a hook face of the magic tape, almost the whole face of the hook face is provided with bristles for connecting and hooking a hair face, but the arrangement mode can improve the hardness of the hook face, so that the wearing comfort of an infant is poor after wearing the diaper, the skin of the infant is easy to scratch, and the arrangement mode can cause that the hook face and the hair face are more troublesome to tear after being hooked, the infant needs to tear with larger force, and the hook face of the structure is also easy to warp and the like;

in the technical scheme of the invention, the hook surface is improved, the mode of arranging the burs on the whole surface is improved into the mode of intermittently and uniformly arranging the hooks 303 with the burs, and the hooks 303 are connected with the burs, so that the edge raising of the hook surface can be avoided, the stability of the connection between the hook surface and the burs can be ensured, the hook surface is softer, the skin of an infant is not easy to scratch, the tearing process is more convenient, and a larger force is not needed.

Example 2

The structure of example 2 is the same as that of example 1, except that the preparation process of the seabuckthorn oil microspheres is different, and the preparation method is as follows: dissolving 15 parts of PLA and 5 parts of polyethylene glycol in 20 parts of dichloromethane to obtain a PLA solution, adding 1 part of seabuckthorn oil into the PLA solution, uniformly mixing, spray-drying to obtain seabuckthorn oil slow-release microspheres, and storing in a dryer for later use; spray drying operating conditions: the inlet air temperature is 125 ℃, the atomization pressure is 0.6bar, and the rotation speed of the peristaltic pump is 15RPM.

Example 3

The structure of example 3 is the same as that of example 1, except that the preparation process of the seabuckthorn oil microspheres is different, and the preparation method is as follows: dissolving 10 parts of PLA and 8 parts of polyethylene glycol in 20 parts of dichloromethane to obtain a PLA solution, adding 1 part of seabuckthorn oil into the PLA solution, uniformly mixing, spray-drying to obtain seabuckthorn oil slow-release microspheres, and storing in a dryer for later use; spray drying operating conditions: the inlet air temperature is 115 ℃, the atomization pressure is 0.6bar, and the rotation speed of the peristaltic pump is 12RPM.

Example 4

The structure of example 4 is the same as that of example 1, except that the preparation process of the seabuckthorn oil microspheres is different, and the preparation method is as follows: dissolving 5 parts of PLA and 2 parts of PCL in 20 parts of dichloromethane to obtain a PLA solution, adding 1 part of seabuckthorn oil into the PLA solution, uniformly mixing, spray-drying to obtain seabuckthorn oil slow-release microspheres 123, and storing in a dryer for later use; spray drying operating conditions: the air inlet temperature is 110 ℃, the atomization pressure is 0.5bar, and the rotation speed of the peristaltic pump is 10RPM.

Example 5

The structure of example 5 is the same as that of example 1, except that the preparation process of the seabuckthorn oil microspheres is different, and the preparation method is as follows: dissolving 5 parts of PLA, 10 parts of polyethylene glycol and 2 parts of PCL in 20 parts of dichloromethane to obtain a PLA solution, adding 1 part of seabuckthorn oil into the PLA solution, uniformly mixing, spray-drying to obtain seabuckthorn oil slow-release microspheres 123, and storing in a dryer for later use; spray drying operating conditions: the air inlet temperature is 110 ℃, the atomization pressure is 0.5bar, and the rotation speed of the peristaltic pump is 10RPM.

Example 6

The structure of example 6 is the same as that of example 1, except that the preparation process of the seabuckthorn oil microspheres is different, and the preparation method is as follows: dissolving 5 parts of PLA, 15 parts of polyethylene glycol and 1 part of PCL in 20 parts of dichloromethane to obtain a PLA solution, adding 1 part of seabuckthorn oil into the PLA solution, uniformly mixing, spray-drying to obtain seabuckthorn oil slow-release microspheres 123, and storing in a dryer for later use; spray drying operating conditions: the air inlet temperature is 110 ℃, the atomization pressure is 0.5bar, and the rotation speed of the peristaltic pump is 10RPM.

Example 7

The structure of example 7 is the same as that of example 1, except that the preparation process of the seabuckthorn oil microspheres is different, and the preparation method is as follows: dissolving 15 parts of PLA, 8 parts of polyethylene glycol and 3 parts of PCL in 20 parts of dichloromethane to obtain a PLA solution, adding 1 part of seabuckthorn oil into the PLA solution, uniformly mixing, spray-drying to obtain seabuckthorn oil slow-release microspheres 123, and storing in a dryer for later use; spray drying operating conditions: the air inlet temperature is 110 ℃, the atomization pressure is 0.5bar, and the rotation speed of the peristaltic pump is 10RPM.

Example 8

The structure of example 8 is the same as example 1, except that the components used in the seabuckthorn oil microspheres are: 15 parts of PLA-PEG block copolymer replace equally the mixture of PEG and PLA.

Example 9

The structure of example 9 is the same as example 5, except that the components used in the seabuckthorn oil microspheres are: 15 parts of PLA-PEG block copolymer replace equally the mixture of PEG and PLA.

Example 10

The structure of example 10 was the same as example 1 except that the seabuckthorn oil microspheres were made of 5 parts of PLA dissolved in dichloromethane.

And (3) testing the slow release effect of the seabuckthorn oil slow release microspheres:

placing the seabuckthorn oil sustained-release microspheres obtained in the embodiments 1 to 10 in a dissolution instrument, and taking 800mL of pH7.4 phosphate buffer solution as a release medium according to a device (a first method of a dissolution and release determination method in the fourth part of Chinese pharmacopoeia, namely a paddle method); the temperature is 37 +/-0.5 ℃; the rotation speed is 75r/min, and the operation is carried out according to the method. Sampling at fixed time, taking 10mL each time, instantly supplementing 10mL of isothermal medium, filtering with 0.45 μm microporous membrane, precisely measuring the filtrate, diluting with mobile phase to appropriate concentration, measuring peak area, substituting into standard curve, calculating oleum Hippophae concentration, and calculating cumulative release percentage, wherein the data are shown in Table 1 below.

As can be seen from the following table 1, the seabuckthorn oil slow-release microspheres can slowly release seabuckthorn oil by more than 60% within 2 hours, and infants need to change diapers within two to three hours, so that the slow-release time is just matched with the time for changing the diapers of the infants, the skin of the infants can be effectively moistened, a sebum membrane on the surface of the skin can effectively exist, and adverse reactions such as allergic chapping, roughness, diaper rash generation and the like are reduced. When only PLA is adopted to prepare the seabuckthorn oil microspheres, the release of seabuckthorn oil is slow, the release amount within 2 hours is less than half, the skin of the infant can not be effectively moistened after the infant urinates, and the seabuckthorn oil is wasted.

TABLE 1 sustained Release Effect of sustained Release of urine Damp

Claims

1. A sea buckthorn oil slow-release diaper is characterized by comprising a double-layer absorption core (100), a double-layer glue-spraying base film (200) and an elastic waistband structure (300), wherein the double-layer glue-spraying base film (200) is arranged on the outer edge of the double-layer absorption core (100) in a surrounding mode, the elastic waistband structure (300) is arranged at the end portion of the diaper, the double-layer absorption core (100) comprises an absorption layer (110) and a skin-friendly layer (120), the absorption layer (110) comprises an absorption core main body and an absorption part (112), the absorption core main body (111) is respectively a first absorption layer (113) and a second absorption layer (114) from top to bottom, the absorption part (112) is respectively a first spun yarn layer (115), a second spun yarn layer (116) and a third spun yarn layer (117) from top to bottom, the first spun yarn layer (115), the second spun yarn layer (116) and the third spun yarn layer (117) are respectively and mutually interpenetrated with the first absorption layer (113) and the second absorption layer (114), and the skin-friendly layer (120) covers the upper end of the skin-friendly layer (112) and is fixedly connected with the first spun yarn layer; the skin-friendly layer (120) consists of an outer skin (121) and an inner core (122), the outer skin (121) coats the inner core (122), and the inner core (122) contains the seabuckthorn oil slow-release microspheres (123);

the preparation method of the seabuckthorn oil slow-release microspheres (123) in the inner core (122) comprises the following steps: dissolving appropriate amount of PLA, polyethylene glycol and polycaprolactone in appropriate amount of dichloromethane, adding oleum Hippophae into the mixed solution, mixing, and spray drying to obtain oleum Hippophae sustained release microsphere;

the mass ratio of the PLA to the polyethylene glycol to the aggregated lactone to the seabuckthorn oil is (5 to 15): (5 to 10): (1-3): 1;

the first absorption layer (113) and the second absorption layer (114) are respectively provided with a first guide groove (118) and a second guide groove (119) which are parallel to the long direction of the liquid absorption part (112);

at least two first diversion trenches (118) are arranged; at least one second guide groove (119) is arranged, and the first guide groove (118) and the second guide groove (119) are arranged in a staggered manner;

the first absorption layer (113) and the second absorption layer (114) are respectively composed of water-absorbing capsules (124) made of SAP pellets.

2. The slow release diaper of claim 1, wherein the first, second and third layers of yarns (115, 116, 117) are non-woven, cotton or fiber cloth.

3. The sea buckthorn oil sustained-release diaper according to claim 1, wherein a sea buckthorn oil sustained-release layer is coated on the surface of the water absorbent capsule.

4. The seabuckthorn oil slow-release diaper according to claim 1, wherein the skin (121) of the skin-friendly layer (120) is a wood pulp skin, and the inner core (122) is a cotton core.

5. The seabuckthorn oil slow-release diaper according to claim 1, wherein the spray drying conditions are as follows: the air inlet temperature is 110 to 125 ℃, the atomization pressure is 0.5 to 0.6bar, and the rotation speed of a peristaltic pump is 10 to 15RPM.

6. The seabuckthorn oil slow-release diaper according to claim 1, wherein the reverse glue-spraying base film (200) comprises an inner film layer (201) and an outer film layer (202), and the upper and lower edges of the inner film layer (201) and the outer film layer (202) are fixedly connected by gluing.

7. The slow-release diaper according to claim 1, wherein the elastic waistband structure (300) comprises a rough surface belt (301) with rough surfaces at two ends and a hook surface belt (302) with hook surfaces at two ends, the hook surface belt (302) is provided with a plurality of hooks (303) for hooking the rough surfaces, and the hooks are distributed in an isosceles triangle or isosceles trapezoid shape.