CN110403768A - A method of preparing the disposable absorbent article of multiple lateral leakage protection three-dimensional shield - Google Patents
A method of preparing the disposable absorbent article of multiple lateral leakage protection three-dimensional shield Download PDFInfo
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- CN110403768A CN110403768A CN201910764953.8A CN201910764953A CN110403768A CN 110403768 A CN110403768 A CN 110403768A CN 201910764953 A CN201910764953 A CN 201910764953A CN 110403768 A CN110403768 A CN 110403768A
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- Prior art keywords
- sheet
- dimensional shield
- water repellent
- nonwoven
- layer
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
Abstract
The present invention relates to a kind of methods of disposable absorbent article for preparing multiple lateral leakage protection three-dimensional shield, it is characterised in that the preparation of the three-dimensional shield composite sheet includes the following steps: Step 1: carrying out glue spraying processing in the corresponding position that nonwoven sheet corresponds to connection water repellent sheet material；Step 2: then water repellent sheet material is connected in the nonwoven sheet by adhesive layer；Step 3: carrying out slitting treatment to nonwoven sheet；Step 4: by the transverse sides position of elastic elastic glue spraying gluing connection water repellent sheet material；Step 5: to the processing of water repellent sheet material glue spraying；Step 6: doubling-up device is used to be respectively formed water repellent sheet material as middle layer, there is left three-dimensional shield composite sheet, the right three-dimensional shield composite sheet of three-layer composite structure；Step 7: left three-dimensional shield composite sheet, right three-dimensional shield composite sheet to be connected to the both lateral sides of permeable top layer by adhesive layer respectively, and then form the three-dimensional shield of multiple lateral leakage protection.
Description
Technical field
The present invention relates to disposable absorbent article fields, in particular to a kind of to prepare the primary of multiple lateral leakage protection three-dimensional shield
The method of property absorbent article.
Background technique
In general, baby's absorbent article includes baby paper diaper, nappy, de- drawing trousers etc., there is multilayer material composition,
Including inner surface material, absorbing material etc..As the improvement of people's living standards, due to baby paper diaper have it is easy to carry,
The advantages of clean hygiene, therefore, paper diaper for infant using more and more extensive.Baby's absorbent article increasingly be particular about comfortably with
Practical, the application of baby's absorbent article facilitates people and fosters baby.
Due to the defects of structure design, wearing comfort more, generally results in that leak-proof effect is not good to traditional paper diaper.
Therefore, China Patent No. discloses a kind of paper diaper of Automatic-expanding leak-proof three-dimensional guards, coated papers for 201520047036.5
The three-dimensional shield for leakproof of the two sides of urine pants ontology and ontology setting, is additionally provided with elastic strip, bullet on three-dimensional shield
Property item be arranged in three-dimensional shield elastic edge downside, both ends setting on the body and is fixed on the inside of elastic edge,
The paper diaper make the anti-side leakage effect of paper diaper get a promotion, but before can not solving by the way that three-dimensional shield is arranged in ontology two sides
The problem of leaking back leak, and whole three-dimensional sense is not strong.
Notification number be CN101862239B prior art discloses the paper diaper with front and back leak-proof three-dimensional enclosure, leakproofs
Effect is good, and it is absorbent cotton core layer, In between hydrophilic surface layer and substratum for waterproofing which, which includes hydrophilic surface layer, substratum for waterproofing,
On the outside of the both ends of absorbent cotton core layer longitudinal direction, hydrophilic surface layer is bonded together with substratum for waterproofing, and being respectively provided with one in paper diaper two sides prevents
The three-dimensional shield of side leakage, three-dimensional shield be provided with can longitudinal contraction elastic, three-dimensional shield longitudinal direction both ends and hydrophilic surface layer bond,
Bond locations are in the outside at absorbent cotton core layer longitudinal direction both ends.As above-mentioned preferred embodiment, the three-dimensional shield of above-mentioned paper diaper
The contracted length of interior elastic is greater than the longitudinal length of absorbent cotton core layer.When in use, elastic stretching lifts the anti-bottom to this paper diaper
Layer forms certain altitude, and the front and back end of paper diaper is allowed to generate good leak preventing effect.In addition, what absorbent cotton core layer longitudinal end installed additional
Water absorption layer can make leak preventing effect more obvious, and elastic waistline, which is pasted onto the substratum for waterproofing back side, can make dress more comfortable, personal.
However, three-dimensional shield all wraps up bullet using single layer water-proof material substantially in the absorbent article of existing lateral leakage protection
Property elastic is made.Therefore, the present invention provides a kind of three-dimensional shield with more preferably hydrostatic pressure resistant and water repellency, and thus obtains
Leak resistance is excellent, flexibility is good, the excellent disposable absorbent article of wearing comfort.
Summary of the invention
The object of the invention is to three-dimensional to provide a kind of multiple lateral leakage protection three-dimensional shield and the multiple lateral leakage protection being arranged
The preparation method of the disposable absorbent article of encirclement, the three-dimensional shield not only have more preferably hydrostatic pressure resistant and water repellency, and
And the leak resistance of three-dimensional shield is excellent, flexibility is good, wearing comfort is excellent, effectively solves hydraulic fluid side existing for existing three-dimensional shield
The problem of leakage, leakage and the not high problem of flexibility, effectively avoid existing disposable absorbent article because absorbent cores are to liquid absorption
Or the technical issues of spreading side leakage that is bad and leading to generation, leakage.
In order to achieve the above objectives, the technical solution adopted by the present invention are as follows: prepare the primary of multiple lateral leakage protection three-dimensional shield
Property absorbent article method, include the steps that formed three-dimensional shield composite sheet, absorbent cores molding the step of with formed liquid-tight
The step of property bottom, and the three-dimensional shield composite sheet is integrated with absorbent cores, opaque liquid bottom composite joint, and
Calf circumference is formed through arc excision excess stock, then is cut in flakes and the step of obtain disposable absorbent article, wherein is described vertical
The preparation of body encirclement composite sheet includes the following steps:
Step 1: carrying out glue spraying processing respectively in the corresponding position that nonwoven sheet corresponds to connection water repellent sheet material；
Step 2: then water repellent sheet material is connected in the nonwoven sheet by adhesive layer, wherein the water repellent
The ratio between lateral breadth of sheet material and the lateral breadth of the nonwoven sheet is less than or equal to 50%, to non-knit described
Cloth sheet portion is made to be combined the non-woven cloth composite sheet of double-layer structure, and remaining part is non-woven cloth single sheet；
Step 3: using be configured with die cutter die-cutting apparatus, along the nonwoven sheet longitudinal center line into
Row slitting treatment, to be left nonwoven sheet, right nonwoven sheet by the nonwoven sheet；
Step 4: by elastic elastic glue spraying in a stretched state, respectively in left nonwoven sheet, right non-woven pieces of cloth
Material is connect close to the transverse sides position of the water repellent sheet material with non-woven cloth single sheet gluing；
Step 5: carrying out glue spraying processing respectively to the water repellent sheet material in left nonwoven sheet and right nonwoven sheet；
Step 6: using doubling-up device, along the outside of elastic elastic, respectively by the left nonwoven sheet of step (5),
Non-woven cloth single sheet in right nonwoven sheet carries out described in laterally folded and cladding in the position of the elastic elastic
Elastic elastic is entrenched between two panels nonwoven sheet by elastic elastic, is then continued laterally through non-woven cloth single sheet
Water repellent sheet material described in composite joint, being respectively formed water repellent sheet material is middle layer, and the left three-dimensional shield with three-layer composite structure is multiple
Close sheet material, right three-dimensional shield composite sheet；
Step 7: left three-dimensional shield composite sheet, right three-dimensional shield composite sheet are connected to by adhesive layer respectively
The both lateral sides of fluidity top layer, and then form the three-dimensional shield of multiple lateral leakage protection.
Preferably, in step (1), step (2), including following technical process:
Firstly, after nonwoven sheet is flattened by deflector roll, along longitudinal two sides point of the nonwoven sheet
It carry out not glue spraying；
Secondly, using die-cutting apparatus by the water repellent sheet material, line is cut as left water repellent sheet material, right water repellent along the axial center
Left water repellent sheet material, right water repellent sheet material are bonded on the non-woven cloth respectively then by separator, feed device by sheet material
Longitudinal two sides of sheet material.
Preferably, in step (1), step (2), including following technical process:
Firstly, by nonwoven sheet by deflector roll flatten after, along the nonwoven sheet longitudinal center line into
Row glue spraying, the transverse width in glue spraying region are corresponding with the lateral breadth of the water repellent sheet material；
Secondly, water repellent sheet material is connected on the center of the nonwoven sheet.
Preferably, in step (6) further include: by separator, multiple roll guiding device, make left solid respectively
The side that encirclement composite sheet, right three-dimensional shield composite sheet coat flexible elastic is located at disposable absorbent article ontology in cross
Inner side on direction.
Preferably, the left three-dimensional shield composite sheet, right three-dimensional shield composite sheet, by for connecting liquid permeability
The base portion of top layer or/and opaque liquid bottom is connected to the base portion and is located at the freedom portion of base portion upper end, and is connected to this certainly
By portion and positioned at the pars contractilis of freedom portion upper end, the elasticity elastic is located in the pars contractilis, so that each three-dimensional shield is multiple
Close sheet material has elastic extension in a longitudinal direction.
Preferably, the water repellent layer is that PE is cast film layer, square grammes per square metre is 6-16g.
Preferably, the water repellent layer is the ventilative film layer of PE, square grammes per square metre is 6-16g, Air permenbility 2500-5600g/
cm2·24h。
Preferably, further including following technical process in the step of forming opaque liquid bottom:
Frontal waist plaster is engaged in opaque liquid bottom, and calf circumference elastic is compounded in the process in opaque liquid bottom；
The process that left and right waist is amplexiformed into the side together in opaque liquid bottom；And elastic waistline is combined in the transverse direction of left and right waist patch
The process of side.
Preferably, first absorbent cores are laid in the top of opaque liquid bottom, then by the left three-dimensional shield composite sheet
Material, right three-dimensional shield composite sheet distinguish composite joint the both lateral sides of liquid permeability overlay sheet formed left three-dimensional shield,
Right three-dimensional shield, then the liquid permeability overlay sheet of left three-dimensional shield, right three-dimensional shield will be compounded with along disposable absorbent article sheet
The longitudinal direction of body is compounded in the upper surface of the absorbent cores.
Preferably, by the compound good continuous material of each layer by a pair of of flattening guide roller in transmission process, so that continuously
Material is unfolded in transverse direction, flattens, and after then forming calf circumference processing with arc excision excess stock to the cutting of waist patch, then carries out
Finished product monolithic cuts off and obtains disposable absorbent article.
As a kind of perferred technical scheme, spunbond melt-blow nonwoven is that SMS spunbond melt-blow nonwoven or SMMS are spun
Viscous melt-blow nonwoven, square grammes per square metre are 6-16g, wherein the mass percent of meltblown layer (i.e. M layers or MM layers) is 10%-
25%, preferably 12%-20%.
As a kind of perferred technical scheme, the outer layer is also an option that Nonwovens or Through-Air Thermal Bonded Nonwovens.
It is that the present invention realizes the utility model has the advantages that
Firstly, the present invention is on the basis of existing three-dimensional shield, using PE casting films or PE ventilated membrane as being located at interposition
The water repellent layer set and the three-dimensional shield for forming three-decker, increase substantially anti-leakage, the side leakage performance of three-dimensional shield ontology, and
Soft comfortable is improved, existing three-dimensional shield is solved to improve its hydrostatic pressure resistant performance and causes material thickness big, flexibility
The problem of reduction.
Detailed description of the invention
Fig. 1 is provided with the structural schematic diagram of the disposable absorbent article of multiple lateral leakage protection three-dimensional shield.
Fig. 2 is the structural schematic diagram to Fig. 1 along A-A section view of embodiment 1, embodiment 2.
Fig. 3 is the three-decker schematic diagram of the three-dimensional shield of embodiment 1, embodiment 2.
Fig. 4 is the flow diagram of the three-dimensional shield composite sheet of embodiment 3.
Fig. 5 is the flow diagram of the three-dimensional shield composite sheet of embodiment 4.
Specific embodiment
Three-dimensional shield is explained, leakproof edge is also
Deflector roll, die-cutting apparatus, doubling-up device, separator and multi-roll steering device of the present invention, are this technology
Field commonly used equipment or device, those skilled in the art can be familiar with selection and use.
In order to make further understanding to the present invention, it is explained now in conjunction with attached drawing.
Embodiment 1
As shown in attached drawing 1, Fig. 2 and Fig. 3, the baby paper diaper 1 of the present embodiment, including permeable top layer 3, liquid permeability water conservancy diversion
Layer 4 and opaque liquid bottom 10, and the absorbent cores 5, In being arranged between the permeable top layer 3 and opaque liquid bottom 10
The both lateral sides of the absorbent cores 5 are respectively arranged with three-dimensional shield, which includes left three-dimensional shield 22, right three-dimensional shield
21, each three-dimensional shield includes base portion, is connected to the base portion and is located at the freedom portion of base portion upper end, and is connected to this
Freedom portion and the pars contractilis for being located at freedom portion upper end are equipped with elastic elastic 23 in the pars contractilis, so that left three-dimensional shield 22,
Right three-dimensional shield 21 has elastic extension in a longitudinal direction respectively, is connected between each layer by hot melt adhesive layer gluing.It is impermeable
Fluidity bottom 10 is often combined by nonwoven layer 14 and ventilated membrane 13.In addition, baby paper diaper 1 further includes for by baby
Paper diaper 1 are worn on the closed system with user, which pastes 9 and position by the waist for being located at 1 back of baby paper diaper
In the composition of frontal waist plaster 7 and dynamic regulation elastic material 8 of abdomen, for adjusting the elasticity of closed system.
As shown in attached drawing 2, Fig. 3, the design feature of the baby paper diaper 1 of the present embodiment is, in the cross of baby paper diaper 1
Left three-dimensional shield 22, the right three-dimensional shield 21 being arranged to two sides are multiple lateral leakage protection three-dimensional shield, multiple lateral leakage protection solid shield
It encloses and is realized by following implementation:
1) the SMS spun-bonded non-woven or SMMS spun-bonded non-woven for being 6-8g by square grammes per square metre, wherein meltblown layer (i.e. M
Layer or MM layer) mass percent be 16%, after bending inwards formed glue melt-blow nonwoven internal layer, spunbond melt-blow nonwoven
Outer layer.Such as left three-dimensional shield 22, used using spunbond melt-blow nonwoven outer layer 22c as hydrophobic layer, and spunbond melt-blown non-woven
Cloth outer layer 22c is used as skin-friendly layer, and the two is bent by spunbond melt-blown woven cloths integrally connected.
2) selecting square grammes per square metre is the PE casting films of 8g as water repellent layer 11, and longitudinal both ends of PE casting films are protected along solid
The length direction that encloses extends, until the end 40-50mm apart from three-dimensional shield respectively, to promote three-dimensional shield front end, rear end
Gas permeability, in the both lateral sides of PE casting films, will wherein a side along close to pars contractilis, and other side edge then extend to by
Except the interconnecting piece 15 that the three-dimensional shield is connected with opaque liquid bottom, and it is non-with spunbond melt-blown respectively by hot melt adhesive layer
Woven cloths internal layer, spunbond melt-blow nonwoven outer layer composite joint are the three-dimensional shield bulk material with three-decker.
3) to left three-dimensional shield 22, the lateral edge of spunbond melt-blow nonwoven outer layer 22c is extended outwardly, until with it is described not
The side of liquid permeability bottom 10 is connected along concordant, while by spunbond melt-blow nonwoven internal layer 22d, PE casting films (water repellent layer 11)
Made of the lateral edge of composite layer extend to except interconnecting piece 15.
To right three-dimensional shield 21, the lateral edge of spunbond melt-blow nonwoven outer layer 21c is extended outwardly, until with described impermeable
The side of fluidity bottom 10 along concordant, while by spunbond melt-blow nonwoven internal layer 21d, PE casting films (water repellent layer 11) connection and
At the lateral edge of composite layer extend to except interconnecting piece 15.
4) respectively by left three-dimensional shield 22, the base portion of right three-dimensional shield 21 and opaque liquid bottom 10 by interconnecting piece 15 it
It is outer glued fixed, so that left three-dimensional shield 22, right three-dimensional shield 21 are located at the both lateral sides of absorbent cores 5.
Through detecting, the hydrostatic pressure resistant value of the multiple lateral leakage protection three-dimensional shield of the present embodiment is 53mbar, and pliability is
10.4mN。
Above-mentioned three-dimensional shield is equally applicable to the disposable absorbent articles such as pants for infants, adult diaper, sanitary napkin.
The present embodiment using PE casting films as water repellent layer, PE casting films not only hydrostatic pressure resistant performance significantly due to non-woven
Cloth, and its pliability is also significantly better than non-woven cloth, so as to reduce hydrophobic layer, outer layer spun-bonded non-woven it is flat
Tegafur Injection weight, to improve the pliability of three-dimensional shield, therefore, PE casting films increase substantially the anti-leakage of three-dimensional shield ontology, side
Performance is leaked, and improves soft comfortable, therefore, existing three-dimensional shield is solved to improve its hydrostatic pressure resistant performance and leads to material
The problem of thickness is big, and flexibility reduces.
Embodiment 2
The present embodiment difference from example 1 is that, the present embodiment selects PE film layer of breathing freely to be used as water repellent layer, flat
Tegafur Injection weight is 8g, Air permenbility 3600g/cm2·24h。
As shown in attached drawing 2, Fig. 3, multiple lateral leakage protection three-dimensional shield (the left three-dimensional shield 22, right three-dimensional shield of the present embodiment
21) it is realized by following implementation:
1) the SMS spun-bonded non-woven or SMMS spun-bonded non-woven for being 8g by square grammes per square metre, wherein (i.e. M layers of meltblown layer
Or MM layers) mass percent be 16%, viscous melt-blow nonwoven internal layer is formed after bending inwards, outside spunbond melt-blow nonwoven
Layer, wherein viscous melt-blow nonwoven internal layer is used as hydrophobic layer, and spunbond melt-blow nonwoven outer layer makes as skin-friendly layer
With the two is bent by spunbond melt-blown woven cloths integrally connected.
2) length direction by longitudinal both ends of PE ventilated membrane along three-dimensional shield extends, until respectively apart from three-dimensional shield
End is concordant, in the both lateral sides of PE ventilated membrane, will wherein a side is along close to pars contractilis, and other side edge then extends to
Except the interconnecting piece 15 that the three-dimensional shield is connected with opaque liquid bottom, and it is meltblown respectively with spunbond by hot melt adhesive layer
Non-woven cloth internal layer, spunbond melt-blow nonwoven outer layer composite joint are the three-dimensional shield bulk material with three-decker.
3) respectively by left three-dimensional shield 22, the spunbond melt-blow nonwoven outer layer of right three-dimensional shield 21 lateral edge to extension
It stretches, until with the side of the opaque liquid bottom along concordant, while spunbond melt-blow nonwoven internal layer, PE casting films being connected
Made of the lateral edge of composite layer extend to except interconnecting piece 15.
4) respectively by left three-dimensional shield 22, the base portion of right three-dimensional shield 21 and opaque liquid bottom 10 by interconnecting piece 15 it
It is outer glued fixed, so that left three-dimensional shield 22, right three-dimensional shield 21 are located at the both lateral sides of absorbent cores 5.
Through detecting, the 58mbar, pliability 11.0mN of the multiple lateral leakage protection three-dimensional shield of the present embodiment.
Embodiment 3
The present embodiment is to provide the method for preparing the disposable absorbent article of multiple lateral leakage protection three-dimensional shield, absorption therein
Core, opaque liquid bottom, closed system (left and right waist patch, frontal waist plaster, elastic waistline) and by the side of each structure sheaf composite joint
Method is made according to existing method, step, which is known to those skilled in the art grasp, such as: this field skill
What art personnel knew be formed opaque liquid bottom technical process in, frontal waist plaster is engaged in opaque liquid bottom, and
Calf circumference elastic is compounded in opaque liquid bottom, meanwhile, left and right waist is amplexiformed into the side together in opaque liquid bottom, and will
Elastic waistline is combined to the position of the laterally inboard of left and right waist patch.For another example: the good continuous material of each structure sheaf composite joint is existed
By a pair of of flattening guide roller in transmission process, so that continuous material is unfolded in transverse direction, flattens, cutting and arc then are pasted to waist
After shape cuts off excess stock formation calf circumference processing, then carries out the cutting of finished product monolithic and obtain disposable absorbent article.
The present embodiment is in the method for disposable absorbent article for preparing multiple lateral leakage protection three-dimensional shield, it is characterized in that shape
The step of at three-dimensional shield composite sheet, and then realize multiple lateral leakage protection three-dimensional shield, wherein three-dimensional shield composite sheet is by a left side
Nonwoven sheet, right nonwoven sheet composition, in the forming process of disposable absorbent article, first in opaque liquid bottom
Top be laid with absorbent cores, then by the left nonwoven sheet, right nonwoven sheet difference composite joint in liquid permeability
The both lateral sides of overlay sheet and form left three-dimensional shield, right three-dimensional shield, then left three-dimensional shield, right three-dimensional shield will be compounded with
Liquid permeability overlay sheet the upper surfaces of the absorbent cores is compounded in along the longitudinal direction of disposable absorbent article ontology, thus will
Three-dimensional shield composite sheet is integrated with absorbent cores, opaque liquid bottom composite joint, and cuts off through arc that form calf circumference extra
Material, then disposable absorbent article is obtained through cutting in flakes.
As shown in Fig. 4, the three-dimensional shield composite sheet of the present embodiment is implemented by technique below:
Step 1: after nonwoven sheet 101 is flattened by deflector roll, along (such as SMS nonwoven of nonwoven sheet 101
Cloth, SMMS non-woven fabrics, fabric hot rolled nonwoven fabrics or spun-bonded non-woven fabrics etc.) longitudinal two sides carry out glue spraying respectively, wherein glue shape can be with
Using multi-line frictioning, spiral glue spraying, Ω type glue spraying, S type glue spraying, strip glue or CS type glue spraying.
Step 2: carrying out cutting 201 to water repellent sheet material using die-cutting apparatus, 201 are cut by water repellent sheet material (such as PE casting films
Or PE ventilated membrane) along the axial center line cutting be left water repellent sheet material 102, right water repellent sheet material 103.Then by separator,
Left water repellent sheet material 102, right water repellent sheet material 103 are bonded on longitudinal two sides of the nonwoven sheet by feed device respectively,
To which the nonwoven sheet part be combined the non-woven cloth composite sheet 106 of double-layer structure, and remaining part is
Non-woven cloth single sheet 107.Wherein:
The ratio between lateral breadth of the water repellent sheet material and the lateral breadth of the nonwoven sheet for less than or equal to
50%, such as can choose 50%, 45%, 40%, 35%, preferably 40% or 45%.
Step 3: cutting 202 is carried out to non-woven cloth using the die-cutting apparatus configured with die cutter, along described non-woven
The longitudinal center line of cloth sheet material carries out 202 processing of cutting, to be left nonwoven sheet 101A by the nonwoven sheet
With right nonwoven sheet 101B.
Step 4: by elastic elastic 104 (such as spandex thread, flat rubber root) glue spraying in a stretched state, non-knitted left respectively
Cloth sheet material 101A is made close to the lateral location of water repellent sheet material 102, right nonwoven sheet 101B is close to the side of water repellent sheet material 103
Position is connect with non-woven cloth single sheet gluing.
In this step, elastic elastic 104 can be by two or two or more and along the transverse direction of non-woven cloth single sheet
The spaced spandex thread composition of width direction.
In this step, water repellent piece and adjacent spandex thread (side i.e. apart from water repellent piece is along the smallest spandex thread of spacing) it
Between distance be preferably 3-15mm, preferably 5-10mm.
Step 5: to be located at left nonwoven sheet 101A and right nonwoven sheet 101B on water repellent sheet material 102,
103 carry out glue spraying processing respectively.
Step 6: folding compound 203: using doubling-up device, along the outside of that root elasticity elastic far from water repellent sheet material, divide
Not by the non-woven cloth single sheet in the left nonwoven sheet of step (5), right nonwoven sheet, in the elastic rubber
The position of muscle carries out laterally folded and coats the elastic elastic, and elastic elastic is entrenched between two panels nonwoven sheet,
Then continue water repellent sheet material described in lateral composite joint through non-woven cloth single sheet, being respectively formed water repellent sheet material is middle layer,
Left three-dimensional shield composite sheet 108, right three-dimensional shield composite sheet 109 with three-layer composite structure.
The left three-dimensional shield composite sheet 108, right three-dimensional shield composite sheet 109, by for connecting liquid permeability top
The base portion of layer or/and opaque liquid bottom is connected to the base portion and is located at the freedom portion of base portion upper end, and is connected to the freedom
Portion and the pars contractilis for being located at freedom portion upper end, the elasticity elastic is located in the pars contractilis, so that each three-dimensional shield is compound
Sheet material has elastic extension in a longitudinal direction.
Step 7: left three-dimensional shield composite sheet 108, right three-dimensional shield composite sheet 109 are connected by adhesive layer respectively
The both lateral sides in permeable top layer are connect, left three-dimensional shield, right three-dimensional shield are formed, and then form the three-dimensional shield of multiple lateral leakage protection
It encloses.
Preferably, square grammes per square metre is 6-16g preferably, the water repellent layer is that PE is cast film layer.
Embodiment 4
As shown in Fig. 5, the present embodiment provides the implementing process of another three-dimensional shield composite sheet:
Step 1: after nonwoven sheet 301 is flattened by deflector roll, along the axial direction of the nonwoven sheet 301
Center line carries out glue spraying, the transverse width in glue spraying region and the lateral width of water repellent sheet material 302 (such as PE casting films or PE ventilated membrane)
Width is corresponding.
Step 2: water repellent sheet material 302 is connected on the center of nonwoven sheet 301, the water repellent sheet material 302 is logical
Cross hot melt adhesive layer and 301 composite joint of nonwoven sheet.
Step 3: cutting 401 is carried out to non-woven cloth using the die-cutting apparatus configured with die cutter, along described non-woven
The longitudinal center line of cloth sheet material 301 carries out 401 processing of cutting, to be left nonwoven sheet by the nonwoven sheet
301A and right nonwoven sheet 301B, while also cutting water repellent sheet material 302 for water repellent sheet material 302A and water repellent sheet material 302B.
Step 4: by elastic elastic 303 (such as spandex thread, flat rubber root) glue spraying in a stretched state, non-knitted left respectively
Cloth sheet material 301A is made close to the lateral location of water repellent sheet material 302A, right nonwoven sheet 301B is close to the side of water repellent sheet material 302B
Side position is connect with non-woven cloth single sheet gluing.
Step 5: to be located at left nonwoven sheet 301A and right nonwoven sheet 301B on water repellent sheet material 302A,
302B carries out glue spraying processing respectively.
Step 6: folding compound 402: using doubling-up device, along the outside of that root elasticity elastic far from water repellent sheet material, divide
Not by the non-woven cloth single sheet in the left nonwoven sheet of step (5), right nonwoven sheet, in the elastic rubber
The position of muscle carries out laterally folded and coats the elastic elastic, and elastic elastic is entrenched between two panels nonwoven sheet,
Then continue water repellent sheet material described in lateral composite joint through non-woven cloth single sheet, being respectively formed water repellent sheet material is middle layer,
Left three-dimensional shield composite sheet 304, right three-dimensional shield composite sheet 305 with three-layer composite structure.
In step (6) further include: by separator, multi-roll steering device, make left three-dimensional shield composite sheet respectively
The side that material 304, right three-dimensional shield composite sheet 305 coat flexible elastic is located at disposable absorbent article ontology in lateral side
Upward inner side.
Step 7: left three-dimensional shield composite sheet 304, right three-dimensional shield composite sheet 305 are connected by adhesive layer respectively
The both lateral sides in permeable top layer are connect, left three-dimensional shield, right three-dimensional shield are formed, and then form the three-dimensional shield of multiple lateral leakage protection
It encloses.
Preferably, the water repellent layer is the ventilative film layer of PE, square grammes per square metre is 6-16g, Air permenbility 2500-5600g/
cm2·24h。
Performance test
1, hydrostatic pressure resistant: according to (the 16th part of textile non-woven cloth test method: impervious GB/T 24218.16-2017
Aqueous measurement (hydrostatic platen press)) it is tested.
2, it pliability: is measured with reference to the detection method of EDANA WSP 90.3. (05).
3, comparative sample: square grammes per square metre is the SMS non-woven fabrics of 24g, commercially available.
Test result is as follows shown in table:
| Project | Embodiment 1 | Embodiment 2 | Comparative sample |
| Hydrostatic pressure resistant (mbar) | 53 | 58 | 24 |
| Pliability (mN) | 10.4 | 11.0 | 15.3 |
It should be noted that softness values are smaller, pliability is better.
Although the present invention describes specific case study on implementation, the scope of the invention is not limited to above-mentioned specific realities
Example is applied, without departing from the case in the spirit of the invention, guarantor of the invention is each fallen within to various modifications of the invention, variations and alternatives
Protect range.
Claims (10)
1. a kind of method for the disposable absorbent article for preparing multiple lateral leakage protection three-dimensional shield, including form three-dimensional shield composite sheet
The step of the step of the step of material, absorbent cores molding, is with opaque liquid bottom is formed, and by the three-dimensional shield composite sheet
It is integrated with absorbent cores, opaque liquid bottom composite joint, and forms calf circumference through arc excision excess stock, then in blocks through cutting
And the step of obtaining disposable absorbent article, it is characterised in that: the preparation of the three-dimensional shield composite sheet includes the following steps:
Step 1: carrying out glue spraying processing in the corresponding position that nonwoven sheet corresponds to connection water repellent sheet material；
Step 2: then water repellent sheet material is connected in the nonwoven sheet by adhesive layer, wherein the water repellent sheet material
Lateral breadth and the nonwoven sheet the ratio between lateral breadth for less than or equal to 50%, thus by the non-woven cloth
Sheet portion is combined the non-woven cloth composite sheet of double-layer structure, and remaining part is non-woven cloth single sheet；
Step 3: using the die-cutting apparatus for being configured with die cutter, the longitudinal center line along the nonwoven sheet is divided
Processing is cut, to be left nonwoven sheet, right nonwoven sheet by the nonwoven sheet；
Step 4: elastic elastic glue spraying in a stretched state is leaned in left nonwoven sheet, right nonwoven sheet respectively
The transverse sides position of the nearly water repellent sheet material is connect with non-woven cloth single sheet gluing；
Step 5: carrying out glue spraying processing respectively to the water repellent sheet material in left nonwoven sheet and right nonwoven sheet；
Step 6: using doubling-up device, it is respectively that the left nonwoven sheet of step (5), the right side is non-along the outside of elastic elastic
Non-woven cloth single sheet in woven cloths sheet material carries out laterally folded and coats the elasticity in the position of the elastic elastic
Elastic elastic is entrenched between two panels nonwoven sheet by elastic, is then continued through non-woven cloth single sheet laterally compound
The water repellent sheet material is connected, being respectively formed water repellent sheet material is middle layer, the left three-dimensional shield composite sheet with three-layer composite structure
Material, right three-dimensional shield composite sheet；
Step 7: left three-dimensional shield composite sheet, right three-dimensional shield composite sheet are connected to liquid permeability by adhesive layer respectively
The both lateral sides of top layer, and then form the three-dimensional shield of multiple lateral leakage protection.
2. the method for the disposable absorbent article according to claim 1 for preparing multiple lateral leakage protection three-dimensional shield, feature
It is: in step (1), step (2), including following technical process:
Firstly, by nonwoven sheet by deflector roll flatten after, along the nonwoven sheet longitudinal two sides respectively into
Row glue spraying；
Secondly, using die-cutting apparatus by the water repellent sheet material, line is cut as left water repellent sheet material, right water repellent sheet material along the axial center,
Then by separator, feed device, left water repellent sheet material, right water repellent sheet material are bonded on the nonwoven sheet respectively
Longitudinal two sides.
3. the method for the disposable absorbent article according to claim 1 for preparing multiple lateral leakage protection three-dimensional shield, feature
It is: in step (1), step (2), including following technical process:
Firstly, being sprayed after nonwoven sheet is flattened by deflector roll along the longitudinal center line of the nonwoven sheet
Glue, the transverse width in glue spraying region are corresponding with the lateral breadth of the water repellent sheet material；
Secondly, water repellent sheet material is connected on the center of the nonwoven sheet.
4. the method for the disposable absorbent article according to claim 3 for preparing multiple lateral leakage protection three-dimensional shield, feature
Be: in step (6) further include: by separator, multiple roll guiding device, make respectively left three-dimensional shield composite sheet,
The side that right three-dimensional shield composite sheet coats flexible elastic is located at disposable absorbent article ontology in a lateral direction interior
Side position.
5. the method for the disposable absorbent article according to claim 1 for preparing multiple lateral leakage protection three-dimensional shield, feature
It is: the left three-dimensional shield composite sheet, right three-dimensional shield composite sheet, by for connecting permeable top layer or/and not
The base portion of liquid permeability bottom is connected to the base portion and is located at the freedom portion of base portion upper end, and is connected to the freedom portion and is located at
The pars contractilis of freedom portion upper end, the elasticity elastic is located in the pars contractilis, so that each three-dimensional shield composite sheet is vertical
There is elastic extension on direction.
6. the method for -5 any disposable absorbent articles for preparing multiple lateral leakage protection three-dimensional shield according to claim 1,
It is characterized by: the water repellent layer is that PE is cast film layer, square grammes per square metre is 6-16g.
7. the method for -5 any disposable absorbent articles for preparing multiple lateral leakage protection three-dimensional shield according to claim 1,
It is characterized by: the water repellent layer is the ventilative film layer of PE, square grammes per square metre is 6-16g, Air permenbility 2500-5600g/cm2·
24h。
8. the method for -5 any disposable absorbent articles for preparing multiple lateral leakage protection three-dimensional shield according to claim 1,
It is characterized by: further including following technical process in the step of forming opaque liquid bottom:
Frontal waist plaster is engaged in opaque liquid bottom, and calf circumference elastic is compounded in the process in opaque liquid bottom；It will be left
The process that right waist amplexiforms the side together in opaque liquid bottom；And elastic waistline is combined to the laterally inboard of left and right waist patch
Process.
9. the method for the disposable absorbent article according to claim 8 for preparing multiple lateral leakage protection three-dimensional shield, feature
It is: first absorbent cores is laid in the top of opaque liquid bottom, then by the left three-dimensional shield composite sheet, right three-dimensional shield
Composite sheet distinguishes composite joint and forms left three-dimensional shield, right three-dimensional shield in the both lateral sides of liquid permeability overlay sheet, then
The liquid permeability overlay sheet for being compounded with left three-dimensional shield, right three-dimensional shield is answered along the longitudinal direction of disposable absorbent article ontology
It closes in the upper surface of the absorbent cores.
10. the method for the disposable absorbent article according to claim 9 for preparing multiple lateral leakage protection three-dimensional shield, feature
It is: by the compound good continuous material of each layer by a pair of of flattening guide roller in transmission process, so that continuous material is transversely square
To expansion, flattening, after then forming calf circumference processing with arc excision excess stock to the cutting of waist patch, then finished product monolithic cutting is carried out
And obtain disposable absorbent article.
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| CN112057235A (en) * | 2020-08-31 | 2020-12-11 | 广州市汉氏卫生用品有限公司 | Diaper lateral leakage prevention structure and manufacturing method thereof |
| CN112057236A (en) * | 2020-08-31 | 2020-12-11 | 广州市汉氏卫生用品有限公司 | Diaper side leakage preventing structure capable of preventing external friction and manufacturing method thereof |
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| CN110403768B (en) | 2021-08-27 |
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