A kind of compound core bodyTechnical field
The present invention relates to a kind of to play the structure of absorption in absorbent article, can be used for paper urine more particularly to one kindThe NEW TYPE OF COMPOSITE core of absorption is played in the amenities such as trousers, sanitary napkin.
Background technique
Absorptive core in the absorbent item for nursing using very extensively, most of absorptive core or absorbed layer be byThe absorptive core of non-woven fabrics and wood pulp or Time of Fluff Slurry composition, the absorbent properties of core increase macromolecule suction in order to further increaseWater-resin SAP particle, but the product that such core is worked it out has been easy to appear the case where sticking together, being broken in use,Simultaneously in order to guarantee assimilation effect, the product absorbing structure that this core is worked it out is usually very thick, can bring one to userFixed inconvenience and sense of discomfort.
It is easily risen the case where sticking together, being broken to solve core, the application for a patent for invention of Publication No. CN102715986 disclosesA kind of high-efficiency water-absorbing compound core body, the surface layer and bottom which is made of Time of Fluff Slurry or non-woven fabrics pass through sewing for diatomThe compounding substances of rock powder body and borneol powder composition are wrapped in centre, and are sewed line and are divided into multiple reticular structures.Make in this wayCore is obtained while improving absorption and diffusion velocity, does not also allow easy to knot groups, fracture or clot.
Inconvenient in order to solve core thickness bring, the application for a patent for invention of Publication No. CN101797201 discloses one kindPolymer compound core body, the core are folder bulky nonwoven layer of cloth, bulky nonwoven cloth among dust-free paper surface layer and dust-free paper bottomWater-absorbing resin is uniformly distributed in layer, and the dust-free paper of surface layer and bottom passes through adhesive bonds.Current this compound core body is due to canIt is widely used in ultrathin absorbent item with being arranged very thin, but this core infiltration rate and effect are weak.
Summary of the invention
That the object of the present invention is to provide a kind of absorption efficiency and infiltration rates is high, economical, does not rise and sticks together, is not broken and can basisNeed to adjust a kind of NEW TYPE OF COMPOSITE core of thickness.
In order to achieve the above object, technical scheme is as follows: a kind of NEW TYPE OF COMPOSITE core, including surface layer and centreLayer, by adhesive bonds between surface layer and middle layer, the surface layer includes toilet paper layer and absorptive core, toilet paper layer againIt is the mixture of wood pulp and SAP with wide, described absorptive core outside absorptive core and with absorptive core, the surface layerWidth is 2-2.5 times of middle layer width, and two edge contractions on the surface layer are fully wrapped around by middle layer.
Further, the surface layer absorptive core is that 1-1.5:1 wood pulp and SAP are mixed by weight ratio.
Further, the surface layer with a thickness of 2-5mm.
As it is one of preferably, the middle core body be bulky nonwoven cloth, dust-free paper, blotting paper, hydrophilic nonwoven fabrics,One of spunlace non-woven cloth.
As another preferred embodiment, the grammes per square metre of the middle layer is 35-80g/m2。
Alternatively preferably, the adhesive is wet strong rubber.
Preferably, the wet strong rubber coating weight is more than or equal to 3gsm.
Most preferably, the NEW TYPE OF COMPOSITE core is the suction of baby' diaper, feminine hygiene articles, adult incontinence product linerReceive core.
Compared with the absorptive core used in the existing absorption product, the invention has the benefit that by toilet paper and wood pulpThe surface layer formed with the mixture of SAP, infiltration rate is fast, high-efficient, economical, and package is by non-woven fabrics, dust-free paper among surface layerOr the middle layer of blotting paper composition, can effectively improve wood pulp and SAP blended absorbent core easily rise stick together, easy fracture the shortcomings that, healthPaper bag is covered sandwich layer and is bonded using wet strength agent, the Time of Fluff Slurry of sandwich layer and toilet paper it is wet strong preferably, be tightly combined, it helps increaseThe intensity on surface layer is not easy to be layered, be broken；Meanwhile NEW TYPE OF COMPOSITE core of the invention, thickness can be adjusted as needed, it canMeet different absorption products to the different demands of central absorbent core thickness, without special production equipment, surface layer package is intermediateLayer, formed it is double-deck absorb, water absorption is big, effectively can quickly absorb and storage of urine, to use dryer and comfortableer comfortable.
Detailed description of the invention
Fig. 1 is the deployed configuration schematic diagram of NEW TYPE OF COMPOSITE core of the present invention；
Fig. 2 is the normal condition schematic diagram of NEW TYPE OF COMPOSITE core of the present invention；
Wherein, 1. surface layer；2. middle layer；3. adhesive；4. toilet paper layer；5. absorptive core；
Specific embodiment
The content of the utility model is further described with reference to the accompanying drawing, but does not make the limit to the content of present inventionSystem.
As depicted in figs. 1 and 2, a kind of NEW TYPE OF COMPOSITE core, including surface layer 1 and middle layer 2, between surface layer 1 and middle layer 2It is bonded by adhesive 3；Surface layer 1 includes toilet paper layer 4 and absorptive core 5 again, toilet paper layer 4 be located at outside absorptive core 4 andWith absorptive core 5 with width, absorptive core 4 is the mixture of wood pulp and SAP, and the width on surface layer 1 is the 2-2.5 of 2 width of middle layerTimes, two edge contractions on the surface layer 1 are fully wrapped around by middle layer 2.
Embodiment 1
The NEW TYPE OF COMPOSITE core is used for baby paper diaper A, and compound core body includes surface layer 1 and middle layer 2, and surface layer 1 includes againToilet paper layer 4 and absorptive core 5, toilet paper layer 4 are located at 5 bottom of absorptive core and absorptive core 5 with width, and absorptive core 5 is by weightAmount is mixed than the wood pulp and SAP for being 1:1, with a thickness of 5mm, the long 39.4cm of sandwich layer, the wide 11.0cm of sandwich layer, and size L, centreLayer 2 is blotting paper, and the grammes per square metre of middle layer 2 is 35g/m2.The width on surface layer 1 is 2.5 times of 2 width of middle layer, the both sides on surface layer 1Folding is fully wrapped around by middle layer 2, passes through wet strength agent between surface layer 1 and middle layer 2 and bonds, coating weight 2.0gsm.
Embodiment 2
The NEW TYPE OF COMPOSITE core is used for baby paper diaper B, and compound core body includes surface layer and middle layer, and surface layer includes health againPaper layer and absorptive core, toilet paper layer are located at absorptive core bottom and absorptive core with width, and absorptive core is 1.5:1 by weight ratioWood pulp and SAP be mixed, with a thickness of 4mm, sandwich layer long 39.4cm, the narrow wide 11.0cm of shelves, size L, middle layer be bulk nothingOne of woven fabric, hydrophilic nonwoven fabrics, spunlace non-woven cloth, the grammes per square metre of middle layer are 80g/m2.The width on surface layer is intermediate slice width2.5 times of degree, two edge contractions on surface layer are fully wrapped around by middle layer, bonded between middle layer and surface layer by wet strength agent, coatingAmount is 3.0gsm.
Embodiment 3
The NEW TYPE OF COMPOSITE core is used for baby paper diaper C, and compound core body includes surface layer and middle layer, and surface layer includes health againPaper layer and absorptive core, toilet paper layer are located at absorptive core bottom and absorptive core with width, and absorptive core is 1.2:1 by weight ratioWood pulp and SAP be mixed, with a thickness of 3.5mm, sandwich layer long 39.4cm, the narrow wide 11.0cm of shelves, size L, middle layer be it is dustlessPaper, the grammes per square metre of middle layer are 50g/m2.The width on surface layer is 2 times of middle layer width, and two edge contractions on surface layer are complete by middle layerFull package, is bonded between middle layer and surface layer by wet strength agent, coating weight 4.0gsm.
Three sections of baby paper diapers A, B, C in above three embodiments are tested for the property, comparative test is to useThe Time of Fluff Slurry and SAP mixture core of 1.5:1 and the baby diaper product of ordinary construction glue, a length of 34.7cm of sandwich layer, narrow shelvesWide 8.3cm, size M, adhesive coating weight are 2.0gsm.
One, test result is as follows for absorbent properties:
The above results show that for the compound core body of the utility model structure compared with traditional core, saturation capacity is big, water lock abilityBy force, infiltration rate is fast, i.e., absorbent properties are more excellent.
Two, bobbing machine sandwich layer strength test, test method are to add a certain amount of physiological saline in paper diaper absorptive core layer,Hang on bobbing machine swing arm, vibration-testing carried out with specific speed, records time of vibration, the time is longer, sandwich layer it is wet strong better,Time is shorter, sandwich layer it is wet strong poorer, test result is as follows:
The above results show that for the compound core body of the utility model structure compared with traditional core, wet strength is big, novel with thisThe absorption product of compound core body is not easy to break when in use, and using effect is more preferable.
Above-mentioned technical proposal only embodies the preferred embodiment of the present invention, should not be understood as to authorized range of the present inventionLimitation, all modification and improvement made according to the present invention belong to the scope of the present invention.