CN113230037B

CN113230037B - Camellia oil slow-release diaper

Info

Publication number: CN113230037B
Application number: CN202110406984.3A
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: CN113230037A

Abstract

The invention relates to the field of paper diapers, in particular to a camellia oil slow-release diaper which comprises a double-layer absorption core, wherein the double-layer absorption core comprises an absorption layer and a skin-friendly layer, the absorption layer comprises an absorption core main body and liquid absorption parts alternately arranged on the upper part and the lower part of the absorption core main body, 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 coats the inner core, and the inner core contains the camellia oil slow-release microspheres. The invention overcomes the defects that the prior paper diaper can not protect delicate skin of infants, can have bad phenomena of chapping, roughness, diaper rash and the like after being used for a long time, has slower liquid absorption rate and can not be uniformly distributed, can moisten the skin of the buttocks of the infants for a long time, effectively protects the health of the fat membrane of the buttocks of the infants, and also has the advantages of high urine absorption rate, large absorption capacity, ventilation, softness and the like.

Description

Camellia oil slow-release diaper

Technical Field

The invention relates to the field of paper diapers, in particular to a camellia 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, so that the urine can quickly permeate and effectively prevent the urine from back permeation, and the surface layer of the diaper is kept dry and comfortable. While the main function of the absorbent core is to capture and rapidly absorb urine, disperse it or to spread it throughout the core by capillary action, ultimately absorbing and storing it.

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 moisturizing capabilities, and can resist the stimulation of foreign objects to adults, mainly comprises a sebum membrane and a cuticle, and because the skin of infants is incompletely developed, the natural barrier is mainly a layer of sebum membrane covering the skin surface of the infants. 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 absorption of liquid and dryness, but the problem of how to protect the sebum membrane on the skin surface of the infant is not correspondingly related. 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 camellia oil slow-release diaper provided by the invention can effectively protect the skin of an infant and has a high liquid absorption rate, so that the defects that the existing diaper can not protect the delicate skin of the infant, the infant can crack and coarsen, diaper rash and the like after being used for a long time, and the liquid absorption rate is low and the liquid can not be uniformly distributed are overcome.

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

the camellia oil slow-release diaper comprises a double-layer absorption core, wherein the double-layer absorption core comprises an absorption layer and a skin-friendly layer, the absorption layer comprises an absorption core main body and liquid absorption parts which are alternately arranged on the upper part and the lower part of the absorption core main body, 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 inner core is coated by the skin, and the inner core contains camellia oil slow-release microspheres.

The camellia oil slow-release diaper has the advantages that the part of the diaper which absorbs urine is a double-layer absorption core, the absorption layer of the absorption layer mainly plays a role in absorbing urine, the absorption layer has a multi-layer structure, the urine can be absorbed by the absorption core main body along with the capillary action after the liquid absorption part absorbs the urine, the absorption rate of the urine is high due to the fact that the absorption core main body and the liquid absorption parts are arranged, and meanwhile the absorption amount of the urine is correspondingly increased.

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 camellia oil slow-release microspheres, so that camellia oil in the microspheres can be gradually released along with the use. Researches show that the camellia oil mainly contains unsaturated fatty acid mainly comprising oleic acid, linoleic acid and linolenic acid, and the camellia oil is taken as medicinal oil and carried in Chinese pharmacopoeia (1995 edition), and has good effects for oral administration and external use because the camellia oil is rich in various nutritional ingredients. The camellia oil is smeared on the buttocks of the neonate, so that the red buttocks of the neonate can be effectively reduced, and the effect is more excellent compared with the paraffin oil. Therefore, the camellia oil is added in the invention, so that the skin of the infant can be effectively moistened, a 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, because the camellia oil is gradually released, the camellia oil has the effect of long-term protection, and adverse reactions such as pore blockage, allergy and the like caused by over greasy skin of the infant can not be caused.

Preferably, the absorption core main part is first absorbed layer and second absorbed layer respectively from top to bottom, imbibition portion is first spinning layer, second spinning layer and third spinning layer respectively from top to bottom, be provided with respectively in first absorbed layer and the second absorbed layer with imbibition portion length direction parallel first guiding gutter and second guiding gutter.

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 part of the liquid absorption part is low in liquid absorption amount is solved.

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, and the number of the second diversion grooves is set to be at least one, so that 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.

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.

First guiding gutter and second guiding gutter form an energy gradient behind the looks mistake, make liquid more easily absorbed by lower floor's second absorbing layer, can keep upper strata and skin contact portion's dry and comfortable, first absorbing layer more is favorable to the circulation of liquid to a certain extent promptly, can further increase the usable length who absorbs wicking liquid portion, through second guiding gutter and the first guiding gutter that the looks mistake set up, make the usable length who absorbs wicking liquid portion can reach at least 50% of its total length, the increase of usable length not only can reduce the waste of water absorption capsule, can also absorb more liquid, produce more excellent technological effect.

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 cloth has a good lyophilic effect and a good air circulation effect, so that the defect of sultriness can be caused.

Preferably, the first and second absorbent layers are each composed of a water-absorbent 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 camellia oil sustained-release microspheres in the inner core comprises the following steps: taking a proper amount of polylactic acid PLA or a mixture of a proper amount of polylactic acid PLA and one of polycaprolactone PCL and polyethylene glycol PEG, adding a proper amount of dichloromethane to dissolve to obtain a PLA solution, then adding camellia oil into the PLA solution, uniformly mixing, spray drying to obtain camellia oil sustained-release microspheres, and placing the camellia oil sustained-release microspheres in a dryer for later use.

The camellia oil slow-release microspheres are obtained by camellia oil coated by PLA (polylactic acid), when the camellia oil is added into a PLA solution, mist sprayed in the spray drying process of the PLA solution in which the camellia oil is dissolved is of a spherical structure, and when dichloromethane solution in the camellia oil volatilizes, a certain amount of camellia oil can be coated inside the camellia oil after drying and forming due to the fact that the PLA solution is a solid material, so that the slow-release microspheres coated with the camellia oil are formed. Because PLA has lipophilicity, and camellia oil is just grease, the camellia oil can slowly seep out of the PLA surface, thereby achieving the effect of slow release. And the polycaprolactone and the polylactic acid are separated in crystalline phase, so that the over-slow release of the camellia oil can be avoided, the polyethylene glycol has water solubility, and is dissolved after contacting water in urine, so that the structure of the small ball is damaged, and the dissolution of the camellia oil after the baby urinates is enhanced.

Preferably, the mass ratio of the PLA, the PEG, the PCL to the camellia oil is (5-20): (5-10): (1-4): 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.

Preferably, the outer edge of the double-layer absorption core is circumferentially provided with a layer of back-shaped glue spraying bottom film in a surrounding manner, the back-shaped glue spraying bottom film comprises an inner film layer and an outer film layer, and the inner film layer and the outer film layer are fixedly connected in a gluing manner.

In the existing basement membrane, the mode that the whole inner side surface of a breathable film is coated with glue is adopted to be bonded with a 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 glue 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 a baby diaper is used, and 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 waistband structure further comprises an elastic waistband structure, 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 a plurality of hook buckles used for hooking the hair sides are arranged on the hook 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 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 with 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 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 and rub 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 camellia oil slow-release microspheres 123, the water-absorbent capsules 124, the back-type 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 enable any person skilled in the art to make and use the invention. 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 make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Example 1

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

a camellia oil slow-release diaper comprises:

a bi-layer absorbent core 100, the bi-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, and the first absorption layer 113 and the second absorption layer 114 are formed by water absorption capsules 124 made of SAP pellets.

The first absorption layer 113 and the second absorption layer 114 are respectively provided with a first diversion trench 118 and a second diversion trench 119 which are parallel to the length direction of the liquid absorption part 112, and the first diversion trench 118 is provided with at least 2 diversion trenches in the embodiment; 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, and 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 are lost after the contained water-absorbent capsules 124 are expanded, the liquid cannot circulate and is accumulated after a certain degree, and a large amount of 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 water-absorbent capsules 124 being practically useless, and generally, in the use of diaper, pull-up diaper and the like, the existing absorbent wicking part 112 only occupies about 30% of the total length, and a part thereof is provided with a single groove, which may be as strong as 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 part 112 is composed of a first spun-yarn layer 115, a second spun-yarn layer 116, and a third spun-yarn layer 117 from top to bottom, and these three materials are preferably a nonwoven fabric, a cotton fabric, or a 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 camellia oil slow-release microspheres 123, the outer side material of the inner core is a PLA outer cavity, and a certain amount of camellia oil is coated in the PLA outer cavity, and the preparation method comprises the following steps: dissolving 5 parts of PLA in 10 parts of dichloromethane, adding 1 part of camellia oil into the PLA solution, mixing uniformly, spray-drying to obtain camellia 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 present invention is further provided with a back-type glue-spraying base film 200 surrounding the outer edge of the double-layer absorbent core, wherein the back-type glue-spraying base film 200 comprises an inner film layer 201 and an outer film layer 202 which are fixedly connected with each other in a gluing manner. 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, one side of the breathable film, which is bonded with the waterproof oil film, is an inner side face, and a glue material is sprayed on the inner side face 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 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 lead to the improvement of the hardness of the hook face, so that the wearing comfort of the infant is poor after wearing, the skin of the infant is easy to scratch, and the arrangement mode can lead to the more troublesome tearing of the hook face and the bristle face after hooking, the tearing needs to be carried out with larger force, and the hook face with 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 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 camellia oil microspheres is different, and the preparation method is as follows: dissolving 20 parts of PLA in 10 parts of dichloromethane, adding 1 part of camellia oil into the PLA solution, mixing uniformly, spray-drying to obtain camellia 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 camellia oil microspheres is different, and the preparation method is as follows: dissolving 10 parts of PLA in 20 parts of dichloromethane, adding 1 part of camellia oil into the PLA solution, mixing uniformly, spray-drying to obtain camellia 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

Example 4 has the same structure as example 1, except that the preparation process of the camellia oil microspheres is different, wherein the PLA used is PLA-PEG block copolymer.

Example 5

The structure of example 5 is the same as that of example 1, except that the preparation process of camellia oil microspheres is different, and the preparation method is as follows: dissolving 5 parts of PLA and 5 parts of PEG in 20 parts of dichloromethane, adding 1 part of camellia oil into the PLA solution, mixing uniformly, spray-drying to obtain camellia oil sustained-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 6

The structure of example 6 is the same as that of example 1, except that the preparation process of the camellia oil microspheres is different, and the preparation method is as follows: dissolving 5 parts of PLA and 1 part of PCL in 20 parts of dichloromethane, adding 1 part of camellia oil into the PLA solution, mixing uniformly, spray-drying to obtain camellia oil sustained-release microspheres, and storing in a dryer for later use; spray drying operating conditions: the air inlet temperature is 115 ℃, the atomization pressure is 0.6bar, and the rotation speed of the peristaltic pump is 12RPM.

Example 7

The structure of example 7 was the same as that of example 6 except that 5 parts of PLA was used and 4 parts of PCL was used.

Example 8

The structure of example 8 is the same as example 6, except that PLA is a PLA-PEG block copolymer.

Example 9

The structure of example 9 is the same as that of example 6, except that the preparation process of the camellia oil microspheres is different, and the preparation method is as follows: adding 5 parts of PLA, 1 part of PCL and 5 parts of PEG into 20 parts of dichloromethane for dissolving, then adding 1 part of camellia oil into the PLA solution for uniformly mixing, performing spray drying to obtain camellia oil sustained-release microspheres, and storing the camellia oil sustained-release microspheres 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.

Testing the slow release effect of the camellia oil slow release microspheres:

placing the camellia oil sustained-release microspheres prepared in the examples 1 to 9 in a dissolution instrument, and taking 800mL of pH7.4 phosphate buffer solution as a release medium according to a first method-paddle method for determining dissolution and release degrees in the four parts of Chinese pharmacopoeia; 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 subsequent filtrates, diluting with mobile phase to appropriate concentration, measuring peak area, substituting into standard curve, calculating camellia oil concentration, and calculating cumulative release percentage, wherein the data are shown in Table 1 below.

TABLE 1

As shown in the above table 1, as shown in examples 1-8, the camellia oil sustained-release microspheres in the invention can slowly release the camellia oil by more than 50% within 2h, and because the baby usually needs to change the diaper within several hours, the sustained-release time in the invention is just matched with the diaper changing time of the baby, so that the skin of the baby can be effectively moistened, a skin lipid film on the surface of the skin can effectively exist, and adverse reactions such as allergic drying crack, roughness, diaper rash generation and the like are reduced. In examples 1-3, the camellia oil can be released for half, while in example 9, the release speed is too high, which is not suitable for the frequency of changing the baby diaper, and causes the uncomfortable feeling of the baby due to the excessive accumulation of the camellia oil.

Claims

1. The camellia oil slow-release diaper is characterized by comprising a double-layer absorption core (100), wherein 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 (111) and liquid absorption parts (112) which are alternately arranged on the upper side and the lower side of the absorption core main body (111), and 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) consists of an outer skin (121) and an inner core (122), the outer skin (121) covers the inner core (122), and camellia oil slow-release microspheres (123) are contained in the inner core (122);

the preparation method of the camellia oil slow-release microspheres (123) comprises the following steps: taking a proper amount of polylactic acid (PLA), polycaprolactone (PCL) and polyethylene glycol (PEG), adding a proper amount of dichloromethane to dissolve to obtain a PLA solution, then adding camellia oil into the PLA solution, uniformly mixing, and performing spray drying to obtain camellia oil sustained-release microspheres (123);

the mass ratio of the PLA to the PEG to the PCL to the camellia oil is (5 to 20): (5-10): (1-4): 1;

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 liquid absorption part (112) is respectively provided with a first spinning layer (115), a second spinning layer (116) and a third spinning layer (117) from top to bottom, and a first diversion trench (118) and a second diversion trench (119) which are parallel to the long direction of the liquid absorption part (112) are respectively arranged in the first absorption layer (113) and the second absorption layer (114);

the first guide grooves (118) and the second guide grooves (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).

2. The camellia oil slow-release diaper according to claim 1, wherein at least two first flow guide grooves (118) are formed; the second diversion trench (119) is provided with at least one diversion trench.

3. The camellia oil slow-release diaper according to claim 1, wherein the first, second and third yarn layers (115, 116, 117) are non-woven fabrics, cotton fabrics or fiber fabrics.

4. The camellia oil slow-release diaper as claimed in claim 1, wherein the outer skin (121) of the skin-friendly layer (120) is wood pulp outer skin, and the inner core (122) is cotton core.

5. The camellia 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 camellia oil slow-release diaper according to claim 1, wherein a back-type glue-spraying base film (200) is further arranged around the outer edge of the double-layer absorbent core (100), the back-type glue-spraying base film (200) comprises an inner film layer (201) and an outer film layer (202), and the inner film layer (201) and the outer film layer (202) are fixedly connected in a gluing manner.

7. The camellia oil slow-release diaper according to claim 1, further comprising an elastic waistband structure (300), wherein the elastic waistband structure (300) comprises a hair side belt (301) with hair sides at two ends and a hook side belt (302) with hook sides at two ends, and a plurality of hooks (303) for hooking the hair sides are arranged on the hook side belt (302); the hook buckles (303) are distributed on the hook surface in an isosceles triangle or isosceles trapezoid shape.