CN108474158A - Non-woven fabrics is laminated - Google Patents
Non-woven fabrics is laminated Download PDFInfo
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- CN108474158A CN108474158A CN201680076676.6A CN201680076676A CN108474158A CN 108474158 A CN108474158 A CN 108474158A CN 201680076676 A CN201680076676 A CN 201680076676A CN 108474158 A CN108474158 A CN 108474158A
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- outer layer
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
A kind of stacking non-woven fabrics (1) is disclosed, it includes the 1st outer layers (11), positioned at the 2nd outer layer (12) of the side opposite with the 1st outer layer (11) and the middle layer (13) between the 1st outer layer (11) and the 2nd outer layer (12), wherein, 1st outer layer (11) and the 2nd outer layer (12) both of which contain hydrophobic fibre and hydrophilic fibre, and heat sealability fiber is not contained, all-mass of the middle layer (13) containing slurry and relative to middle layer (13) is heat sealability fibers of the 20 mass % less than 80 mass %, middle layer (13) has the part that heat sealability fiber engages each other.For stacking non-woven fabrics (1), storage waterborne liquid is had excellent performance in advance before actual use, and it slow puts haveing excellent performance for stored waterborne liquid.
Description
Technical field
The present invention relates to a kind of stacking non-woven fabrics.More particularly, the present invention relates to a kind of performances of storage waterborne liquid
The gentle stacking non-woven fabrics haveing excellent performance for putting the waterborne liquid.
Background technology
In the past, it for the surface cleaning of the various articles such as the skin surface, furniture, floor that make people, is soaked using by waterborne liquid
The disposable dirt wiring-out implements such as wet wipes made of in stain to non-woven fabrics.For it is in the wiper blade, in order to make the skin surface of people clean
And for the wiper blade used, especially pay attention to skin feel.It is thus known that having main in order to ensure water absorbency and water retentivity
The two sides of the middle layer formed by slurry is configured with the nonwoven of the outer layer containing the excellent rayon fiber of flexibility and hydrophily
Cloth (patent document 1).But although with the middle layer that is mainly formed by slurry be laminated non-woven fabrics for waterborne liquid
Absorbability is excellent, but in view of the higher water-retaining property of slurry, exists and is difficult to the waterborne liquid of absorption releasing this problem.This
Outside, it for the disposable dirt wiring-out implements such as wet wipes, is being attached to the dirt on surface using wiper blade wiping, is for example being attached to people
Skin surface dirt (such as being attached to the stool of buttocks) in the case of, in addition to being desirable to make attachment using waterborne liquid
Except the promotion of the performance for the waterborne liquid that dirt softens or swelling stores sufficient amount in advance to be easy to wipe dirt, also
It is expected that the waterborne liquid stored in advance is slowly released in the case that in wiping, wiper blade applies pressure to wiping object face
Performance promotion.By slowly releasing waterborne liquid from wiper blade, to promote the wiping of the dirt for attachment.If
If the amount for the waterborne liquid released from wiper blade in the wiping operation process of the dirt of attachment is insufficient, sometimes
It is difficult to the dirt of attachment is made to soften or swelling, need to keep the skin wet to wiping object face by spraying water to wiping object face etc.
Operation.If you do not need to keeping the skin wet to wiping object face, then the convenience of wiper blade is promoted.In addition, in the skin surface for making people
In the case of clean, stimulation will not be generated to people due to spraying water to the skin surface of people.In addition, at initial stage, also of wiping operation
It is to make the pre-soaked wiper blade contact wiping object face for having a waterborne liquid and when relative to wiping object face pressure contracting, from wiping
In the case that piece excessively releases waterborne liquid, exists and generate for the waterborne liquid released is spreadable in wiping object face
Extra operation, or waterborne liquid is exceedingly flowed out or is dripped before the dirt softening or swelling that make attachment are wiped
Possibility.If waterborne liquid is exceedingly flowed out or is dripped from the skin surface of people, it is likely that the clothes for soaking or polluting dress, because
This is unsatisfactory.
It is recorded in patent document 2 by the internal layer containing high hygroscopicity fibre and the positive layer that is mainly formed by synthetic fibers
With back layer using absorption release performance piece made of heat bonding integration, and records and utilize the high-hydroscopicity contained by internal layer fine
Dimension absorbs, keeps moisture and the slow content for putting the moisture in actual use.But absorbing moisture using high absorbent fiber
In the case of, the moisture that is absorbed there are high absorbent fiber it is most of in the state for being absorbed, keeping by high absorbent fiber
Under be difficult to be released this problem.In addition, intensity drops high absorbent fiber before actual use due to absorbing moisture in advance
It is low, therefore can not bear its load this problem being subject in the presence of sheet material in wiping operation process.
The waterborne liquid for being stored in wiper blade in advance amount is more and wiper blade delay water desorplion liquid performance it is higher, then
Bigger area can be effectively wiped, therefore in this technical field, it is desirable that stores in advance before actual use is aqueous
The amount of liquid is more and the higher wiper blade of slow release feature of waterborne liquid.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2005-287894 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2008-155566 bulletins
Invention content
Problems to be solved by the invention
Thus, the problem to be solved in the present invention is, provides a kind of storage waterborne liquid advance before actual use
It has excellent performance and delays the non-woven fabrics haveing excellent performance for putting stored waterborne liquid.
The solution to the problem
It is that the present inventor is studied to solve the above-mentioned problems as a result, find can change in the case that below
It is kind to release for the waterborne liquid stored in advance before actual use depot and slowly the waterborne liquid of storage
Both performances, so that the present application is completed,
A kind of stacking non-woven fabrics, it includes the 1st outer layer, positioned at the side opposite with the 1st outer layer the 2nd outer layer and be located at
Middle layer between 1st outer layer and the 2nd outer layer, wherein
1st outer layer and the 2nd outer layer both of which contain hydrophobic fibre and hydrophilic fibre, and do not contain heat sealability
Fiber,
Middle layer contain slurry and relative to middle layer all-mass be 20 mass % less than 80 mass %'s
Heat sealability fiber,
Middle layer has the part that heat sealability fiber engages each other.
That is, the present invention is a kind of stacking non-woven fabrics, in a technical solution, it includes the 1st outer layer, be located at outside the 1st
2nd outer layer of the opposite side of layer and the middle layer between the 1st outer layer and the 2nd outer layer, wherein
1st outer layer and the 2nd outer layer both of which contain hydrophobic fibre and hydrophilic fibre, and do not contain heat sealability
Fiber,
Middle layer contain slurry and relative to middle layer all-mass be 20 mass % less than 80 mass %'s
Heat sealability fiber,
Middle layer has the part that heat sealability fiber engages each other.
The effect of invention
For the stacking non-woven fabrics of the present invention, for the storage for the waterborne liquid stored in advance before actual use
Sustainability is excellent, and it has excellent performance what the waterborne liquid of storage was slowly released.
Description of the drawings
Fig. 1 is the schematic sectional view of the stacking non-woven fabrics of the present invention.
Fig. 2 is the water absorption W of the Examples 1 to 3 found out and the non-woven fabrics of comparative example 1 and comparative example 23, moisture-holding capacity W5And
The chart of liquid discharging amount.
Fig. 3 is the variation of the liquid discharging amount of the Examples 1 to 3 for indicating to find out and the non-woven fabrics of comparative example 1 and comparative example 2
Chart.
Specific implementation mode
A part for the embodiment of following presentation technical solution related to the present invention.
[mode 1]
A kind of stacking non-woven fabrics, it includes the 1st outer layer, positioned at the side opposite with the 1st outer layer the 2nd outer layer and be located at
Middle layer between 1st outer layer and the 2nd outer layer, wherein
1st outer layer and the 2nd outer layer both of which contain hydrophobic fibre and hydrophilic fibre, and do not contain heat sealability
Fiber,
Middle layer contain slurry and relative to middle layer all-mass be 20 mass % less than 80 mass %'s
Heat sealability fiber,
Middle layer has the part that heat sealability fiber engages each other.
According to aforesaid way 1, in the intermediate layer, firm three-dimensional is formed by so that heat sealability fiber is interconnected
Cancellated structure, it is ensured that for the moderately high intensity and fluffy degree of compressing force in wiping operation process.Further, since can
Space storage waterborne liquid in three-dimensional cancellated structure made of being interconnected in heat sealability fiber, and institute in middle layer
The slurry contained has higher water-retaining property, therefore for non-woven fabrics is laminated, for storage in advance before actual use
The waterborne liquid deposited it is depot excellent, and it has excellent performance what the waterborne liquid of storage was slowly released.Also,
In the case that 1 outer layer and the 2nd outer layer contain heat sealability fiber, it is easy to because of the part that heat sealability fiber engages each other
Feel harsh feeling, but since the 1st outer layer and the 2nd outer layer both of which do not contain heat sealability fiber, the layer of the present invention
Folded non-woven fabrics has excellent skin feel.Heat sealability fiber amount relative to middle layer all-mass be less than 20 matter
In the case of measuring %, in the intermediate layer, it is difficult to form the grid of firm three-dimensional by so that heat sealability fiber is interconnected
Construction.In the case where the amount of heat sealability fiber is 80 mass % or more relative to the all-mass of middle layer, in middle layer
The amount of contained slurry is to store the performance of waterborne liquid in advance less than 20 mass % and the performance of the waterborne liquid is kept to become
It obtains inadequate.Further, since the ratio of slurry is reduced, therefore the reduced performance of the slow waterborne liquid for putting middle layer.
[mode 2]
Stacking non-woven fabrics according to aforesaid way 1, wherein the hydrophilic fibre in the 1st outer layer and the 2nd outer layer is in
Slurry in interbed interweaves.
According to aforesaid way 2, due to the hydrophilic fibre in the 1st outer layer and the 2nd outer layer and the slurry in the middle layer
Interweave, if therefore wiping when to stacking non-woven fabrics apply compressing force, be held in advance middle layer waterborne liquid be easy to from
Slurry in middle layer is shifted to the 1st outer layer and the 2nd outer layer, often when the pressure is exerted can be to wiping object face, such as people
Skin surface slowly release waterborne liquid.
[mode 3]
Stacking non-woven fabrics according to aforesaid way 1 or 2, wherein stacking non-woven fabrics is dry type spunlace non-woven cloth.
According to aforesaid way 3, it is capable of providing superior skin feel and higher intensity.
[mode 4]
Stacking non-woven fabrics according to any one of aforesaid way 1~3, wherein middle layer has than the 1st outer layer and the
Fibre density (the g/cm of 2 outer floor heights3)。
According to aforesaid way 3, middle layer has the fibre density higher than the fibre density of the 1st outer layer and the 2nd outer layer, therefore
When waterborne liquid is stored in stacking non-woven fabrics in advance before using stacking non-woven fabrics, capillarity can be utilized to make aqueous
Liquid is promptly shifted from the appearance of the 1st outer layer and the 2nd outer layer towards middle layer.
[mode 5]
Stacking non-woven fabrics according to any one of aforesaid way 1~4, wherein heat sealability fiber have 3mm~
The average fiber length of 8mm.
In the case where the average fiber length of heat sealability fiber is less than 3mm, it is difficult to keep middle layer fluffy, and it is difficult
Improve the depot of the waterborne liquid of the amount for abundance.The fibre length of heat sealability fiber is longer, then heat sealability fiber
The tendency for being oriented in the face direction of middle layer is higher.Therefore, it after by heat sealability fiber thermal welding, is hardly formed with storage
Deposit the middle layer of the fluffy degree of the required abundance of waterborne liquid.If in addition, being oriented in the heat sealability in the face direction of middle layer
The ratio of fiber is excessively high, then is impregnated in waterborne liquid and feelings that waterborne liquid is stored in middle layer in advance non-woven fabrics will be laminated
Under condition, in the slurry absorbing aqueous liquids contained by middle layer and when swelling, heat sealability fiber interferes slurry in centre mutually
The tendency of swelling increases on the thickness direction of layer.
[mode 6]
Stacking non-woven fabrics according to any one of aforesaid way 1~5, wherein the weight per unit area of middle layer is
It is laminated 30% or more of the weight per unit area of non-woven fabrics.
It is right in the case where the weight per unit area of middle layer is 30% or more of the weight per unit area that non-woven fabrics is laminated
It can ensure higher intensity and higher fluffy degree in compression, therefore ideal.
Hereinafter, the stacking non-woven fabrics of the present invention is described in detail with reference to accompanying drawings.
Fig. 1 is the schematic sectional view of the stacking non-woven fabrics of the present invention.As shown in Figure 1, the stacking non-woven fabrics 1 of the present invention is packet
Containing the 1st outer layer 11, positioned at the 2nd outer layer 12 of the side opposite with the 1st outer layer and between the 1st outer layer and the 2nd outer layer
The laminated body of 3 layers of construction of middle layer 13.
The 1st outer layer 11 and 12 both of which of the 2nd outer layer of the stacking non-woven fabrics 1 of the present invention contain hydrophobic fibre and hydrophilic
Property fiber, and do not contain heat sealability fiber.In the stacking non-woven fabrics of the present invention, it is preferred that outside the 1st outer layer and the 2nd
Hydrophilic fibre contained by layer and the slurry contained by middle layer interweave.By making the parent contained by the 1st outer layer and the 2nd outer layer
Aqueous fiber interweaves with the slurry contained by middle layer, to when stacking non-woven fabrics in wiping operation process when bearing compressing force
It is readily able to transmit waterborne liquid from middle layer to the 1st outer layer and the 2nd outer layer.
The mass ratio of 1st outer layer and hydrophilic fibre and hydrophobic fibre in the 2nd outer layer is preferably 50：50~20：80,
More preferably 30：70~40：60.In the case where the ratio of hydrophilic fibre is less than the range, it is stored in middle layer in advance
Waterborne liquid is difficult to be impregnated with the 1st outer layer and the 2nd outer layer and reach wiping object face.In addition, in wiping operation process, it is difficult to inhale
Receive the waterborne liquid containing dirt.If the ratio of hydrophilic fibre is higher than the range, slow release feature can be caused to reduce.
The type of hydrophilic fibre contained by 1st outer layer and the 2nd outer layer is not particularly limited, but is spread from liquid
Property, intensity, flexibility, versatility etc. consider, as the example of hydrophilic fibre, cellulose fibre etc. can be enumerated,
Such as the natural fibers such as cotton, regenerated fibers such as artificial silk, cuprammonium etc..In these fibers, from strong after liquid diffusibility, intertexture
Degree, processing easness, versatility etc. consider, can particularly preferably use rayon fiber.1st outer layer and the 2nd outer layer institute
The form of the hydrophilic fibre contained is not particularly limited, and can both be used the fiber of circular cross-section, can also be used word
The fiber of the odd-shaped cross sections such as female Y shape, cross, hollow, in addition it is also possible to which the fiber combinations of these forms are got up to use.If
Hydrophilic fibre contains the fiber of odd-shaped cross section, then since the surface area of the fiber of odd-shaped cross section is larger, absorbency is excellent, therefore
The liquid diffusibility for the fiber assembly to form the 1st outer layer and the 2nd outer layer can be further increased.In the 1st outer layer and the 2nd outer layer
In, the hydrophilic fibre of the amount preferably independently containing 50 mass of mass %~20 % more preferably independently contains 40 mass %
The hydrophilic fibre of the amount of~30 mass %.
Preferably, the 1st outer layer and average fiber of the hydrophilic fibre with 30mm~60mm contained by the 2nd outer layer are long
Degree.If the average fiber length of hydrophilic fibre is within that range, the fibre for forming the 1st outer layer and the 2nd outer layer can be utilized
The capillarity of dimension aggregate makes the waterborne liquid for being stored in middle layer in advance promptly be diffused into wiping object face.In addition,
About the hydrophilic fibre contained by the 1st outer layer and the 2nd outer layer, " average fiber length " refers to according to JIS L 1015：2010
Appendix A " measurement of A7.1 fibre lengths " " A7.1.1A methods (standard law) measure each on graduated glass plate
The average fiber length that the method for the length of fiber " measures.In addition, the above method is suitable with the ISO 6989 of distribution in 1981
Test method.For contained by the 1st outer layer described below and the 2nd outer layer hydrophilic fibre and middle layer contained by
The average fiber length of heat sealability fiber is also carried out similarly definition with the average fiber length of hydrophilic fibre.Preferably
It is that the hydrophilic fibre contained by the 1st outer layer and the 2nd outer layer has the fiber number of 1.0dtex~3.0dtex.In hydrophilic fibre
Fiber number be less than 1.0dtex in the case of, it is difficult to using carding machine formed mesh, therefore there are productivity reduce as ask
Topic exists in the case where the fiber number of hydrophilic fibre is more than 3.0dtex and is difficult to happen capillarity this problem.
As the example of the hydrophobic fibre contained by the 1st outer layer and the 2nd outer layer, can enumerate polyethylene, polypropylene,
The thermoplastic fibres such as nylon, polyester or the composite fibre etc. for being composed these thermoplastic fibres.From moistening when intensity,
Fluffy degree, flexibility etc. consider, as hydrophobic fibre, the preferably polyester fibers such as polyethylene terephthalate.
Preferably, the 1st outer layer and the hydrophobic fibre contained by the 2nd outer layer have the average fiber length of 30mm~60mm.If dredging
The average fiber length of aqueous fiber within that range, then can form mesh easily with carding machine.Preferably,
Hydrophobic fibre contained by 1st outer layer and the 2nd outer layer has the fiber number of 0.6dtex~2.2dtex.In the fibre of hydrophobic fibre
In the case that degree is less than 0.6dtex, it is difficult to mesh is formed using carding machine, therefore there are productivities to reduce this problem,
In the case where the fiber number of hydrophobic fibre is more than 2.2dtex, it is hardened this problem there are sense of touch.
1st outer layer and the 2nd outer layer can be the fiber mesh materials formed using the methods of air laid, but preferred
It is that the fibrous layer of at least one of the 1st outer layer and the 2nd outer layer is the carded webs formed using carding machine.In the 1st outer layer
It is aftermentioned utilizing even if longer in the fibre length for constituting fiber in the case of being carded webs with the 2nd outer layer
High pressure water flows such as water jet when making the 1st outer layer, middle layer and the 2nd outer layer integration, can also make the fiber in each fibrous layer
Fiber between mutual and each fibrous layer fully interweaves each other.In addition, there is no special for the form of carded webs
Limitation, can be any one of parallel mesh, interesting web portion, omnidirectional mesh etc. form.
In addition, the 1st outer layer and the 2nd outer layer of the present invention either mutually isostructural fibrous layer (i.e. the type of fiber, mix
The identical fibrous layer of the construction of conjunction rate and layer), can also be different structure fibrous layer (i.e. the type, composite rate of fiber with
And at least 1 different fibrous layer in the construction of layer).1st outer layer and the 2nd outer layer independently have preferably 0.02g/cm3
~0.06g/cm3Fibre density.It is less than 0.02g/cm in the fibre density of the 1st outer layer and the 2nd outer layer3In the case of, exist easily
In feeling coarse caused by the part being interconnected by the heat sealability fiber in middle layer by the 1st outer layer and the 2nd outer layer
Sense of touch, cause be laminated non-woven fabrics the poor this problem of skin feel.It is big in the fibre density of the 1st outer layer and the 2nd outer layer
In 0.06g/cm3In the case of, the slack-off this problem of transfer that there are waterborne liquids between middle layer and outer layer.In addition,
Thickness that can be based on the 1st outer layer and the 2nd outer layer found out according to electron micrograph and the 1st outer layer and the 2nd outer layer
Weight per unit area setting value finds out the fibre density of the 1st outer layer and the 2nd outer layer.
Middle layer contain slurry and relative to the middle layer all-mass be 20 mass % less than 80 mass %
Heat sealability fiber.The part that middle layer is also engaged with heat sealability fiber each other.Heat sealability in middle layer
The content of fiber is preferably the 20 mass % of mass %~50, more preferably 20 mass of mass %~40 %.By the whole of middle layer
Quality as benchmark, the content of the slurry of middle layer is more than 20 mass % and 80 mass % hereinafter, preferably 50 mass %~
80 mass %, more preferably 60 mass of mass %~80 %.In the intermediate layer, the content of heat sealability fiber is more, then more energy
Enough increase the fluffy degree of middle layer, can more increase the volume in the space that can store waterborne liquid, but heat sealability fiber
Content it is more, then the content of slurry is more reduced.Therefore, fine with the low hydrophilic heat sealability of the hydrophily than slurry
In the case that the content of dimension is 80 mass % or more, the amount for being held in the waterborne liquid of middle layer is corresponding to the reduction of slurry content
It reduces on ground.
Heat sealability fiber has the fibre of preferably 1.0dtex~5.0dtex, more preferably 1.3dtex~2.2dtex
Degree.In the case where fiber number is less than 1.0dtex, there is a possibility that dispersibility variation in forming, is more than 5.0dtex in fiber number
In the case of, number of fiber tails off, therefore is difficult to form the space for keeping waterborne liquid in middle layer.Heat sealability fiber
Average fiber length with preferably 1mm~12mm, more preferably 3mm~6mm.It is less than the feelings of 1mm in average fiber length
Under condition, it is difficult to three-dimensional cancellated structure is formed in middle layer, therefore in the presence of the space that can not be formed for storing waterborne liquid
May, in the case where fibre length is more than 12mm, there is the possibility that heat sealability fiber can not be made to be uniformly dispersed and shaped.
The type of slurry contained by middle layer is not particularly limited.As the example of slurry, wood can be enumerated
Material slurry such as coniferous tree slurry and broad leaf tree slurry, non-timber slurry for example straw slurry, sugarcane slurry, reed slurry,
Gombo hemp slurry, mulberry tree slurry, bamboo pulp material, jute pulp material, cotton pulp material (such as cotton linters) etc..Above-mentioned slurry can not receive beating
The non-beating slurry of processing, the beating slurry or combination thereof for receiving beating processing.From before actual use in advance
The performance of waterborne liquid is stored, delays the performance of water desorplion liquid in actual use, absorbed in actual use containing dirt
The performance of liquid, flexibility, processing easness etc. consider, preferably coniferous tree slurry and broad leaf tree slurry etc..
It is at least to contain the fusing points such as polyvinyl resin, low melting point polypropylene on surface as the example of heat sealability fiber
The fiber of lower thermoplastic resin can be enumerated as the example of heat sealability fiber：The single composition of polyvinyl resin is fine
Dimension；The single composition fiber of acrylic resin；It is the core of polyvinyl resin that core, which is pet resin, sheath portion,
The composite synthetic fibre of sheath；Core be acrylic resin, sheath portion be polyvinyl resin core-sheath-type composite synthetic fibre；Core
Portion be high-melting-point acrylic resin, sheath portion be low melting point acrylic resin core-sheath-type composite synthetic fibre；By poly- to benzene two
The composite synthetic fibre for the parallel type that formic acid glycol ester resin and polyvinyl resin are formed；By acrylic resin and polyethylene tree
The composite synthetic fibre etc. for the parallel type that fat is formed.These heat sealability fibers illustrated usually have lower than the hydrophily of slurry
Hydrophily.
For example, making the 1st outer layer, middle layer and the integration of the 2nd outer layer using high pressure water flows such as water jets as described later
And formed after non-woven fabrics, obtained non-woven fabrics is heat-treated and keeps the low-melting-point resin contained by heat sealability fiber molten
Melt to which welding engages each other by heat sealability fiber, is implementing stacking non-woven fabrics of the invention by such process
In the case of manufacture, the cancellated structure of firm three-dimensional is formed by so that heat sealability fiber is interconnected, with thermal welding it
It is preceding compared to can improve non-woven fabrics intensity, particularly moistening when intensity, and can ensure it is right in wiping operation process
In the moderately high intensity and fluffy degree of compressing force.Further, since three-dimensional made of capable of being interconnected in heat sealability fiber
Cancellated structure in space storage waterborne liquid, and the slurry contained in middle layer have higher water-retaining property, therefore
For non-woven fabrics is laminated, for the depot excellent of the waterborne liquid stored in advance before actual use, and its
It is had excellent performance what the waterborne liquid of storage was slowly released.
Preferably, middle layer has the fibre density than the 1st outer layer and the 2nd outer floor height.Middle layer more preferably has
0.04g/cm3~0.25g/cm3Fibre density.Since middle layer is with higher than the fibre density of the 1st outer layer and the 2nd outer layer
Fibre density, thus waterborne liquid is impregnated into the present invention stacking non-woven fabrics in the case of, can utilize the 1st outer layer and
The capillarity of 2nd outer layer makes waterborne liquid promptly be transferred to middle layer, and waterborne liquid is stored in middle layer.In addition,
The weight per unit area setting value of thickness and middle layer that can be based on the middle layer found out according to electron micrograph is found out
The fibre density of middle layer.
Then, illustrate the manufacturing method of the stacking non-woven fabrics of the present invention.
The stacking non-woven fabrics of the present invention can be manufactured using the method including at least following process：
(1) process that supply is used to form the fiber mesh material containing hydrophilic fibre and hydrophobic fibre of the 1st outer layer；
(2) middle layer containing slurry and heat sealability fiber for being used to form middle layer is supplied on the fiber mesh material
The process of mesh；
(3) in the middle layer mesh supply be used to form the 2nd outer layer contain hydrophilic fibre and hydrophobic fibre
Fiber mesh material and the process that obtains laminated body；
(4) work implemented high pressure water flow processing from two surface sides of laminated body and the fiber between each fibrous layer is made to be interweaved
Sequence；And
(5) laminated body is heat-treated and makes the process that laminated body is dry and heat sealability fiber is made to be interconnected.
More particularly, using carding machine etc. directly to above-mentioned hydrophilic fibre and hydrophobic fibre carry out processing or
Above-mentioned hydrophilic fibre and hydrophobic fibre are handled after mixed cotton and formed with forms such as carded webs
Fiber mesh material then utilizes airlaid wait on the fiber mesh material on one side conveying the while of being formed by fiber mesh material
The middle layer mesh for being used to form middle layer containing slurry and heat sealability fiber is supplied, and in middle layer mesh
Supplying has the web for being used to form the 1st outer layer containing hydrophilic fibre and hydrophobic fibre of the forms such as carded webs
Shape object and obtain sandwich, later, implement the high pressure water flows processing such as water jet from two surface sides of the sandwich, it is each at least make
Fiber between fibrous layer is interweaved, and can obtain the 1st outer layer, middle layer and the integrated stacking non-woven fabrics of the 2nd outer layer.
Since the non-woven fabrics obtained in this way is mutual with the fiber in each fibrous layer using high pressure water flows such as water jets
And the construction that the fiber between each fibrous layer interweaves each other, therefore can have excellent sheet strength and liquid to spread
Property, and promote biography of the waterborne liquid diffused up in the face side of non-woven fabrics in the 1st outer layer and the 2nd outer layer to middle layer
It passs.Further, since the 1st outer layer and the 2nd outer layer after waterborne liquid to be transmitted to middle layer being capable of absorbing aqueous liquids again
And it is made to spread in the surface direction, therefore in non-woven fabrics, the absorption of waterborne liquid, the diffusion on the direction of face can be executed repeatedly
And the process of the transmission to middle layer, using the lasting diffusion of waterborne liquid can increase waterborne liquid diffusion zone,
It is stored in the amount of the waterborne liquid of non-woven fabrics.
Also, using high pressure water flows such as water jets and with the fibrous layer of at least one of the 1st outer layer and the 2nd outer layer
Composition fiber the part inside that enters middle layer construction when, be easy to be laminated in the 1st outer layer and the 2nd outer layer
The waterborne liquid that the face side of non-woven fabrics diffuses up is transmitted to the middle layer, therefore in stacking non-woven fabrics, can be rapider
Ground executes the process of absorption, the diffusion on the direction of face and the transmission to middle layer of waterborne liquid, and as a result, it is possible to further
Increase the diffusion velocity and diffusion zone (diffusion area) of the waterborne liquid in non-woven fabrics.
In the stacking non-woven fabrics of the present invention, touched from the formation state, flexibility, skin of the intertexture between the fiber of each layer
Sense, the diffusivity of waterborne liquid, sheet strength etc. consider, it is preferred that the unit area weight of the 1st outer layer and the 2nd outer layer
Amount is in 5g/m each independently2~15g/m2In the range of.The weight per unit area of middle layer is preferably 10g/m2~50g/m2
In the range of.From the aspect of the slow release feature of the depot and waterborne liquid of waterborne liquid, it is further preferred that the list of middle layer
Position area weight is 30% or more of the weight per unit area that non-woven fabrics is laminated.
The waterborne liquid that can be impregnated into the stacking non-woven fabrics of the present invention is water or contains water as main component
Liquid can determine its composition according to purposes.Such as when the buttocks of infant will be wiped as a purpose, make 10 weight %'s
The p-hydroxybenzoate and 92.7 of the mixed liquor of the water of propylene glycol and 90 weight %, the propylene glycol of 7 weight %, 0.3 weight %
The mixed liquor of the water of weight % is impregnated into tissue paper.Impregnation increment more appropriate at this time is the dry weight of tissue paper
150%~300%.
The stacking non-woven fabrics of the present invention is also used as the various wipings such as hygenic towelette other than being used as wet wipes
Piece.In addition, the present invention is not restricted to above-mentioned embodiment, embodiment below, can not depart from the purpose of the present invention,
Change appropriate is carried out in the range of purport.
Embodiment
Hereinafter, the present invention is described in more detail according to embodiment, but it is not construed as thus limiting the present invention.
1 ＞ of ＜ comparative examples
It will be as the rayon fiber of the fiber number 1.4dtex and fibre length 4.4mm of hydrophilic fibre (big and weaving strain formula
The Corona (registered trademark) of commercial firm) and fiber number 1.3dtex's and fibre length 3.8mm as hydrophobic fibre is poly- to benzene
Naphthalate (PET) fiber (70W of Toyo Boseki K.K) is according to rayon fiber：PET fiber=25：75
Mass ratio mixing after, using carding machine with 10g/m2Setting weight per unit area value formed carded webs.By the comb
Mesh is managed as the 1st outer layer.The carded webs conveyed on one side, on one side in the carded webs with 20g/m2Set
Determine weight per unit area value supply slurry (NB401 of Weyerhaeuser) and form middle layer, then, in obtained middle layer
The 2nd outer layer is formed for giving the carded webs that the 1st outer layer is similarly fabricated to, is made by the 1st outer layer, middle layer and the 2nd
The laminated body that outer layer is constituted.The laminated body conveyed on one side with 20m/ points of conveying speed, on one side from two surface sides of laminated body
Implement to utilize water jet (the processing hydraulic pressure of the 1st outer layer side：Processing hydraulic pressure 5MPa, the nozzle diameter of 7MPa, the 2nd outer layer side：92μ
M, nozzle pitch：0.5mm, two row) high pressure water flow processing, to make the composition fiber in each fibrous layer and between each fibrous layer
It is interweaved, obtains integrated 3 layers the 1st above-mentioned outer layer, middle layer and the 2nd outer layer stacking non-woven fabrics constructed.Using dry
1st outer layer side of obtained stacking non-woven fabrics is heated to 125 DEG C by dry machine, the 2nd outer layer side is heated to 135 DEG C, to make it
It is dry.
1 ＞ of ＜ embodiments
Except through by slurry (NB401 of Weyerhaeuser) and as heat sealability fiber have core component be poly-
Propylene (PP), sheath ingredient are PE/PP fibers (AL-s of the skill Ai Siwei along corporation of the core sheath construction of polyethylene (PE)
Adhesion, fiber number 1.7dtex, fibre length 3mm) according to slurry：Fiber=80 PE/PP：It will after 20 mass ratio mixing
It is supplied in the carded webs to form the 1st outer layer and is formed except middle layer, and stacking nonwoven is made in the same manner as comparative example 1
Cloth.By the heating when making stacking non-woven fabrics dry, make the heat sealability fiber welding each other contained by middle layer.
2 ＞ of ＜ embodiments
In addition to the mass ratio of slurry and PE/PP fibers is slurry：Fiber=60 PE/PP：Except 40, similarly to Example 1
Ground makes stacking non-woven fabrics.
3 ＞ of ＜ embodiments
In addition to the mass ratio of slurry and PE/PP fibers is slurry：Fiber=40 PE/PP：Except 60, similarly to Example 1
Ground makes stacking non-woven fabrics.
2 ＞ of ＜ comparative examples
In addition to the mass ratio of slurry and PE/PP fibers is slurry：Fiber=20 PE/PP：Except 80, similarly to Example 1
Ground makes stacking non-woven fabrics.
For each stacking non-woven fabrics of the Examples 1 to 3, comparative example 1~3 that obtain as described above, following sides are utilized
Method finds out weight per unit area (g/m2), thickness (mm), specific volume (cm3/ g), depot and slow release feature.
[weight per unit area]
The sample that 10 sizes of extraction are 100mm × 100mm, measures the quality of each sample.Then, for each sample, meter
Calculate quality (g)/area (m2) value be used as weight per unit area (g/m2).Calculate the weight per unit area for amounting to 10 samples
Average value be used as the weight per unit area of each example.
[thickness]
(strain) Daiei science essence device is used to make the thickness that made THICKNESS GAUGE UF-60 measure non-woven fabrics.
In UF-60, a diameter of 44mm of measuring surface applies non-woven fabrics the pressure of 0.3kPa, measures its thickness.
[specific volume]
By the specific volume for calculating non-woven fabrics with the thickness of non-woven fabrics divided by its weight per unit area.
[depot and slow release feature]
The stacking made in Examples 1 to 3 and comparative example 1 and comparative example 2 is evaluated using two sets of following test method(s)s
(depot) the gentle performance (slow release feature) for putting the waterborne liquid of performance of the storage waterborne liquid of non-woven fabrics.
One of ＜ test method(s)s ＞
Step 1：The stacking non-woven fabrics made from Examples 1 to 3 and comparative example 1 and comparative example 2 extracts size respectively
For the sample of length 140mm × width 60mm, the initial mass (W of each sample is measured using electronic scale0), each sample is implemented
Following step 2~6.
Step 2：Sample is positioned over quality 57.0g (W1), the plain weave woven wire of line footpath 0.29mm, 20 mesh of hole count, will
It is immersed in the bucket for being put into ion exchange water together with sample and woven wire.
Step 3：Sample is lifted together with woven wire from ion exchange water.Woven wire holding is flatly placed 5
Minute.
Step 4：The state that woven wire is positioned over sample utilizes total matter of electronic scale measurement sample and woven wire
Measure (W2), from W2Subtract W0With W1Water absorption (W that is total and finding out sample3)。
Step 5：The sample to have absorbed water is integrally integrally contacted with the upper surface of bearing with the single side (lower surface) of sample
Mode is placed on the upper surface (vertical 140mm × horizontal 60mm) of the rectangular bearing of the SUS304 of horizontal plane, and
The weight (vertical 140mm × horizontal 60mm) of the SUS304 of quality 840g is whole whole with the lower surface of weight with the upper surface of sample
The mode of body contact is placed on the opposing face (upper surface) of sample.Weight is removed after placing sample 3 minutes.
Step 6：Quality (the W of sample is measured using electronic scale4), from (W4) subtract (W0) and find out moisture-holding capacity (W5)。
In addition, above-mentioned steps 1~6 carry out under conditions of 20 DEG C of temperature, relative humidity 60%.
The water absorption W that will be found out3Value and moisture-holding capacity W5Value and will be from W3Subtract W5Obtained from value be used as liquid
Discharging amount W6(W6=W3- W5) it is shown in following table 1.Water absorption (the W of graph representation table 1 is utilized in fig. 23), moisture-holding capacity (W5) with
And liquid discharging amount (W6)。
Two ＞ of ＜ experiments
Step 1：The stacking non-woven fabrics made from Examples 1 to 3 and comparative example 1 and comparative example 2 extracts length respectively
The rectangular sample of 200mm × width 150mm measures the initial mass (W of each sample using electronic scaleA).By each sample
Long side doubling and as size be 150mm × 100mm sample, by the initial mass W of each sampleATwice of mass ion hand over
It changes in water retting to sample.
Step 2：In advance measure by make size be 50mm × 50mm 10 filter paper (Advantec Japan (strain) system determine
Property filter paper No.2) overlapping obtained from filter paper laminated body quality (WB1), so that filter paper laminated body is overlapped on sample.
Step 3：It is (vertical by the weight for placing the quality with 360g on the filter paper laminated body on being superimposed over sample
30mm × horizontal 30mm), to 4.0kgf/cm2Pressure pressure two seconds is applied to filter paper laminated body, after removing weight,
Measure the quality (W of filter paper laminated bodyC1), find out liquid (ion exchange water) discharging amount that filter paper laminated body is released to from sample
WD1(=WC1- WB1) it is used as the 1st liquid discharging amount.
Step 4：By to the sample after step 3 repeat the above steps 2 and step 3 by find out the 2nd time liquid release
Measure WD2。
Step 5：By to the sample after step 4 repeat the above steps 2 and step 3 by find out the 3rd time liquid release
Measure WD3。
Step 6：By to the sample after step 5 repeat the above steps 2 and step 3 by find out the 4th liquid release
Measure WD4。
Step 7：By to the sample after step 6 repeat the above steps 2 and step 3 by find out the 5th liquid release
Measure WD5。
Step 8：By to the sample after step 7 repeat the above steps 2 and step 3 by find out the 6th time liquid release
Measure WD6。
Step 9：By to the sample after step 8 repeat the above steps 2 and step 3 by find out the 7th time liquid release
Measure WD7。
Step 10：By to the sample after step 9 repeat the above steps 2 and step 3 by find out the 8th time liquid release
Measure WD8。
Step 11：By to the sample after step 10 repeat the above steps 2 and step 3 by find out the 9th liquid and put
Output WD9。
Step 12：By to the sample after step 11 repeat the above steps 2 and step 3 by find out the 10th liquid and put
Output WD10。
In addition, above-mentioned steps 1~12 carry out under conditions of 20 DEG C of temperature, relative humidity 60%.In addition, above-mentioned
In step 4~12, the new filter paper laminated body being fabricated to as recorded in step 2 is used.
By liquid discharging amount WD1~WD10With WD1~WD10Total amount be scaled weight per unit area be 40g/m2The case where
Under the value (liquid discharging amount × 40 (g/m actually measured2Weight per unit area (the g/m for)/actually measure2) value), will change
Value after calculation is shown in table 2.In addition, utilizing the liquid discharging amount W of graph representation table 2 in figure 3D1~WD10。
[table 1]
[table 2]
According to table 1 and table 2 and Fig. 1 and Fig. 2 it is found that the stacking non-woven fabrics of the embodiment of the present invention 1~3 and comparative example 1 and
The non-woven fabrics of comparative example 2 is compared, water absorption (i.e. depot) higher, and higher is kept in the case where applying pressure repeatedly
Water-retaining property, and the slow performance for putting a greater amount of water is better.1st liquid discharging amount of Examples 1 to 3 is in comparative example
1 and comparative example 2 the 1st liquid discharging amount about 1.3 times or so of higher level.
Industrial availability
For the stacking non-woven fabrics of the present invention, the performance of storage waterborne liquid is excellent in advance before actual use
It is different, and its it is slow put haveing excellent performance for stored waterborne liquid, therefore can be used as the skin surface, furniture, floor for making people
The disposable dirt wiring-out implements such as the wet wipes etc. the surface cleaning of various articles.
Reference sign
1, non-woven fabrics is laminated；11, the 1st outer layer；12, the 2nd outer layer；13, middle layer.
Claims (6)
1. a kind of stacking non-woven fabrics, the 2nd outer layer it includes the 1st outer layer, positioned at the side opposite with the 1st outer layer and positioned at the
Middle layer between 1 outer layer and the 2nd outer layer, wherein
1st outer layer and the 2nd outer layer both of which contain hydrophobic fibre and hydrophilic fibre, and do not contain heat sealability
Fiber,
The middle layer contain slurry and relative to the middle layer all-mass be 20 mass % less than 80 matter
The heat sealability fiber of % is measured,
The middle layer has the part that heat sealability fiber engages each other.
2. stacking non-woven fabrics according to claim 1, wherein
Hydrophilic fibre in 1st outer layer and the 2nd outer layer interweaves with the slurry in the middle layer.
3. stacking non-woven fabrics according to claim 1 or 2, wherein
The stacking non-woven fabrics is dry type spunlace non-woven cloth.
4. stacking non-woven fabrics described in any one of claim 1 to 3, wherein
The middle layer has the fibre density higher than the fibre density of the 1st outer layer and the 2nd outer layer, the list of the fibre density
Position is g/cm3。
5. stacking non-woven fabrics according to any one of claims 1 to 4, wherein
The heat sealability fiber has the average fiber length of 3mm~8mm.
6. stacking non-woven fabrics according to any one of claims 1 to 5, wherein
The weight per unit area of the middle layer is 30% or more of the weight per unit area of the stacking non-woven fabrics.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015257471A JP6444296B2 (en) | 2015-12-28 | 2015-12-28 | Laminated nonwoven fabric |
| JP2015-257471 | 2015-12-28 | ||
| PCT/JP2016/084842 WO2017115590A1 (en) | 2015-12-28 | 2016-11-24 | Laminated nonwoven fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108474158A true CN108474158A (en) | 2018-08-31 |
Family
ID=59224852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680076676.6A Pending CN108474158A (en) | 2015-12-28 | 2016-11-24 | Non-woven fabrics is laminated |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6444296B2 (en) |
| CN (1) | CN108474158A (en) |
| TW (1) | TW201726998A (en) |
| WO (1) | WO2017115590A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023721B (en) * | 2018-10-23 | 2021-05-18 | 昆山吉美川纤维科技有限公司 | Preparation method of density gradient fiber mat and fiber mat |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7228156B2 (en) * | 2019-02-06 | 2023-02-24 | ユニチカ株式会社 | Laminated continuous fiber nonwoven fabric with sustained liquid release |
| BR112022005820A2 (en) * | 2019-09-30 | 2022-06-21 | Monosol Llc | Non-woven water-soluble composite structure |
| CN114775334B (en) * | 2019-12-31 | 2023-02-03 | 杭州洁诺实业有限公司 | Method for producing composite paper |
| JP7072708B1 (en) | 2021-11-12 | 2022-05-20 | ユニ・チャーム株式会社 | Laminated non-woven fabric |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201726998A (en) | 2017-08-01 |
| JP6444296B2 (en) | 2018-12-26 |
| WO2017115590A1 (en) | 2017-07-06 |
| JP2017119931A (en) | 2017-07-06 |
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