WO2017115590A1 - Non-tissé stratifié - Google Patents

Non-tissé stratifié Download PDF

Info

Publication number
WO2017115590A1
WO2017115590A1 PCT/JP2016/084842 JP2016084842W WO2017115590A1 WO 2017115590 A1 WO2017115590 A1 WO 2017115590A1 JP 2016084842 W JP2016084842 W JP 2016084842W WO 2017115590 A1 WO2017115590 A1 WO 2017115590A1
Authority
WO
WIPO (PCT)
Prior art keywords
nonwoven fabric
fiber
intermediate layer
fibers
outer layer
Prior art date
Application number
PCT/JP2016/084842
Other languages
English (en)
Japanese (ja)
Inventor
明寛 木村
耕 出谷
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN201680076676.6A priority Critical patent/CN108474158B/zh
Publication of WO2017115590A1 publication Critical patent/WO2017115590A1/fr

Links

Images

Classifications

    • 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

Definitions

  • the present invention relates to a laminated nonwoven fabric. More specifically, the present invention relates to a laminated nonwoven fabric excellent in performance for storing an aqueous liquid and performance for sustained release.
  • a nonwoven fabric in which outer layers containing rayon fibers that are excellent in flexibility and hydrophilicity are arranged on both surfaces of an intermediate layer mainly made of pulp in order to ensure water absorption and water retention (Patent Document 1).
  • a laminated nonwoven fabric having an intermediate layer mainly composed of pulp is excellent in absorbability with respect to an aqueous liquid, but has a problem that it is difficult to release the absorbed aqueous liquid due to high water retention of pulp.
  • aqueous liquid that is softened or swollen with aqueous liquid to facilitate wiping
  • the wiping sheet is pressed against the surface to be wiped during wiping.
  • the amount of aqueous liquid released from the wiping sheet during the wiping operation of the sticky dirt is not sufficient, it is difficult to soften or swell the sticky dirt, and spray water onto the surface to be wiped. It may be necessary to replenish moisture on the surface to be wiped. If there is no need to replenish moisture on the surface to be wiped, the convenience of the wipe sheet is improved. In addition, when a person's skin is cleaned, the person is not stimulated by spraying water on the person's skin.
  • the aqueous liquid is excessively discharged from the wiping sheet. If a large amount of water is released, excessive work is required to spread the released aqueous liquid on the surface to be wiped, or excessively before the aqueous liquid is wiped off by softening or swelling the stuck dirt. There is a risk of spillage or dripping. If the aqueous liquid is excessively spilled or dripped from the human skin surface, it is not preferable because it may wet or contaminate the clothes.
  • Patent Document 2 describes a desorption / release sheet in which an inner layer containing highly water-absorbing fibers and a surface layer and a back layer mainly composed of synthetic fibers are integrated by thermal bonding. It is described that moisture is absorbed and retained during actual use by a functional fiber and is released gradually. However, when moisture is absorbed by the superabsorbent fibers, there is a problem that most of the moisture absorbed by the superabsorbent fibers is hardly released while being absorbed and retained by the superabsorbent fibers. Further, since the superabsorbent fiber has a strength that is reduced before it is actually used by absorbing moisture in advance, there is a problem that it cannot withstand the load that the sheet receives during the wiping operation.
  • the problem to be solved by the present invention is to provide a non-woven fabric that is excellent in the performance of preliminarily storing the aqueous liquid before actual use and excellent in the performance of gradually releasing the stored aqueous liquid.
  • the laminated nonwoven fabric including the intermediate layer to The first outer layer and the second outer layer both comprise hydrophobic fibers and hydrophilic fibers and do not comprise heat-fusible fibers;
  • the intermediate layer includes pulp and heat-fusible fibers that are 20% by mass or more and less than 80% by mass with respect to the total mass of the intermediate layer, When the intermediate layer has a portion where the heat-fusible fibers are bonded to each other, both the storage ability with respect to the aqueous liquid stored in advance before actual use and the ability to gradually release the stored aqueous liquid Both have been found to be improved, and the present invention has been completed.
  • the present invention includes a first outer layer, a second outer layer located on the opposite side of the first outer layer, and an intermediate layer located between the first outer layer and the second outer layer.
  • a laminated nonwoven fabric comprising The first outer layer and the second outer layer both include hydrophobic fibers and hydrophilic fibers and do not include heat-fusible fibers.
  • the intermediate layer includes pulp and heat-fusible fibers that are 20% by mass or more and less than 80% by mass with respect to the total mass of the intermediate layer, The intermediate layer has a portion where the heat-fusible fibers are bonded to each other. It is a laminated nonwoven fabric.
  • the laminated non-woven fabric of the present invention is excellent in the storage property with respect to the aqueous liquid stored in advance before actual use, and is excellent in the performance of gradually releasing the stored aqueous liquid.
  • FIG. 1 is a schematic cross-sectional view of the laminated nonwoven fabric of the present invention.
  • FIG. 2 is a graph of the water absorption amount W 3 , the water retention amount W 5 and the liquid discharge amount obtained for the nonwoven fabrics of Examples 1 to 3 and Comparative Examples 1 and 2.
  • FIG. 3 is a graph showing changes in the liquid discharge amount obtained for the nonwoven fabrics of Examples 1 to 3 and Comparative Examples 1 and 2.
  • a laminated nonwoven fabric comprising a first outer layer, a second outer layer located on the opposite side of the first outer layer, and an intermediate layer located between the first outer layer and the second outer layer,
  • the first outer layer and the second outer layer both include hydrophobic fibers and hydrophilic fibers and do not include heat-fusible fibers.
  • the intermediate layer includes pulp and heat-fusible fibers that are 20% by mass or more and less than 80% by mass with respect to the total mass of the intermediate layer,
  • the intermediate layer has a portion where the heat-fusible fibers are bonded to each other.
  • a heat-fusible fiber is joined to form a strong three-dimensional network structure, and a moderately high strength and bulk against compressive force during the wiping operation. Is secured.
  • the laminated nonwoven fabric is While being excellent in the storage property with respect to the aqueous liquid stored beforehand before actual use, it is excellent in the performance which discharge
  • the laminated nonwoven fabric of the present invention has an excellent touch feeling.
  • the amount of the heat-fusible fiber is less than 20% by mass with respect to the total mass of the intermediate layer, a strong three-dimensional network structure is formed by bonding the heat-fusible fibers to each other in the intermediate layer. It is difficult to form.
  • the amount of the heat-fusible fiber is 80% by mass or more with respect to the total mass of the intermediate layer, the amount of the pulp contained in the intermediate layer is less than 20% by mass, The performance to hold becomes insufficient. Moreover, when the ratio of a pulp reduces, the fall of the performance which releases the aqueous liquid of an intermediate
  • the ratio of the heat-fusible fibers oriented in the plane direction of the intermediate layer is excessively high, the pulp contained in the intermediate layer when the laminated nonwoven fabric is impregnated with the aqueous liquid and the aqueous liquid is stored in the intermediate layer in advance.
  • the aqueous liquid absorbs and swells, the tendency for the heat-fusible fibers to prevent the pulp from swelling in the thickness direction of the intermediate layer increases.
  • FIG. 1 is a schematic cross-sectional view of the laminated nonwoven fabric of the present invention.
  • the laminated nonwoven fabric 1 of the present invention includes a first outer layer 11, a second outer layer 12 located on the opposite side of the first outer layer, a first outer layer, and a second outer layer. It is a laminate having a three-layer structure including an intermediate layer 13 located between outer layers.
  • the first outer layer 11 and the second outer layer 12 in the laminated nonwoven fabric 1 of the present invention both contain hydrophobic fibers and hydrophilic fibers, and do not contain heat-fusible fibers.
  • the hydrophilic fibers contained in the first and second outer layers are entangled with the pulp contained in the intermediate layer. Since the hydrophilic fibers contained in the first and second outer layers are entangled with the pulp contained in the intermediate layer, the first and second layers from the intermediate layer when the laminated nonwoven fabric receives a compressive force during the wiping operation. The aqueous liquid can be easily delivered to the outer layer of the two.
  • the mass ratio of hydrophilic fibers to hydrophobic fibers in the first and second outer layers is preferably 50:50 to 20:80, more preferably 30:70 to 40:60.
  • the ratio of the hydrophilic fiber is lower than this range, the aqueous liquid stored in advance in the intermediate layer penetrates the first and second outer layers and hardly reaches the surface to be wiped. Moreover, it becomes difficult to absorb the aqueous liquid containing dirt during the wiping operation.
  • the ratio of the hydrophilic fibers exceeds this range, the sustained release property is lowered.
  • the type of hydrophilic fiber contained in the first and second outer layers is not particularly limited, but examples of the hydrophilic fiber include cellulosic fibers from the viewpoint of liquid diffusibility, strength, flexibility, versatility, and the like. Examples thereof include natural fibers such as cotton, and regenerated fibers such as rayon and cupra. Among these, rayon fibers can be particularly preferably used in terms of liquid diffusibility, strength after entanglement, ease of handling, versatility, and the like.
  • the form of the hydrophilic fibers contained in the first and second outer layers is not particularly limited, and those having a circular cross section may be used, or those having an irregular cross section such as a Y shape, a cross shape, and a hollow shape may be used. These forms may be used in combination.
  • the hydrophilic fiber includes a fiber having an irregular cross section
  • the fiber having an irregular cross section has a large surface area and excellent liquid absorbency, and therefore further improves the liquid diffusibility of the fiber assembly forming the first and second outer layers.
  • the hydrophilic fibers are independently contained in the first and second outer layers, preferably in an amount of 50 to 20% by mass, more preferably 40 to 30% by mass.
  • the hydrophilic fibers contained in the first and second outer layers have an average fiber length of 30 mm to 60 mm.
  • the average fiber length of the hydrophilic fibers is within this range, the aqueous liquid previously stored in the intermediate layer is wiped using the capillary phenomenon of the fiber assembly forming the first and second outer layers. Can diffuse quickly to the surface.
  • the “average fiber length” of the hydrophilic fibers contained in the first and second outer layers means “A7.1.1” in “A7.1 Measurement of fiber length” in Annex A of JIS L 1015: 2010.
  • a method standard method means the average fiber length measured according to the method of measuring the length of individual fibers on a glass plate with a scale.
  • the above method is a test method corresponding to ISO 6989 issued in 1981.
  • the average fiber length of the hydrophilic fiber contained in the first and second outer layers and the heat-fusible fiber contained in the intermediate layer, which will be described below, is also defined in the same manner as the average fiber length of the hydrophilic fiber.
  • the hydrophilic fibers contained in the first and second outer layers preferably have a fineness of 1.0 to 3.0 dtex. When the fineness of the hydrophilic fiber is less than 1.0 dtex, it is difficult to form a web with a card machine, so there is a problem that the productivity is lowered. When the fineness of the hydrophilic fiber exceeds 3.0 dtex There is a problem that the capillary phenomenon is difficult to develop.
  • the hydrophobic fibers contained in the first and second outer layers include thermoplastic fibers such as polyethylene, polypropylene, nylon, and polyester, or composite fibers obtained by combining these thermoplastic fibers.
  • the hydrophobic fiber is preferably a polyester fiber such as polyethylene terephthalate.
  • the hydrophobic fibers contained in the first and second outer layers preferably have an average fiber length of 30 mm to 60 mm. When the average fiber length of the hydrophobic fibers is within this range, a web can be easily formed with a card machine.
  • the hydrophobic fibers contained in the first and second outer layers preferably have a fineness of 0.6 to 2.2 dtex.
  • the first and second outer layers can be fiber webs formed by a method such as the airlaid method, but at least one of the first outer layer and the second outer layer is formed using a card machine. It is preferable that it is a card web.
  • the first and second outer layers are card webs, even if the fiber length of the constituent fibers is long, the first outer layer, the intermediate layer, and the second outer layer are integrated by a high-pressure water flow such as a water jet described later.
  • the fibers in each fiber layer and the fibers in each fiber layer can be sufficiently entangled.
  • the form of the card web is not particularly limited, and may be any form such as a parallel web, a cross web, and a random web.
  • the fiber layer of a different structure namely, It may be a fiber layer in which at least one of fiber type, blending ratio and layer structure is different.
  • the first and second outer layers independently preferably have a fiber density of 0.02 to 0.06 g / cm 3 . When the fiber density of the first and second outer layers is less than 0.02 g / cm 3 , a rough tactile sensation due to the portion where the heat-fusible fibers in the intermediate layer are bonded to each other is the first and second.
  • the fiber density of the first and second outer layers is determined based on the thicknesses of the first and second outer layers determined from the electron micrographs and the basis weight setting values of the first and second outer layers. it can.
  • the intermediate layer contains pulp and heat-fusible fibers that are 20% by mass or more and less than 80% by mass with respect to the total mass of the intermediate layer. Further, the intermediate layer has a portion where the heat-fusible fibers are joined to each other.
  • the content of the heat-fusible fiber in the intermediate layer is preferably 20% by mass to 50% by mass, preferably 20% by mass to 50% by mass, and more preferably 20% by mass to 40% by mass.
  • the pulp content in the intermediate layer is more than 20% by mass and 80% by mass or less, preferably 50% by mass to 80% by mass, more preferably 60% by mass to 80% by mass, based on the total mass of the intermediate layer. is there.
  • the content of pulp decreases as the content of increases. Therefore, when the content of the heat-fusible fiber having hydrophilicity lower than that of the pulp is 80% by mass or more, the amount of the aqueous liquid retained in the intermediate layer is reduced according to the decrease in the pulp content. .
  • the heat-fusible fiber preferably has a fineness of 1.0 to 5.0 dtex, more preferably 1.3 to 2.2 dtex.
  • the fineness is less than 1.0 dtex, the dispersibility may be deteriorated during forming, and when the fineness exceeds 5.0 dtex, the number of fibers decreases, so that the space for holding the aqueous liquid in the intermediate layer Is difficult to form.
  • the heat-fusible fiber preferably has an average fiber length of 1 to 12 mm, more preferably 3 to 6 mm.
  • the average fiber length is less than 1 mm, it is difficult to form a three-dimensional network structure in the intermediate layer, so there is a possibility that a space for storing an aqueous liquid cannot be formed, and the fiber length exceeds 12 mm. In some cases, the heat-fusible fiber cannot be uniformly dispersed and formed.
  • the kind of pulp contained in the intermediate layer is not particularly limited.
  • the pulp include wood pulp such as softwood pulp and hardwood pulp, non-wood pulp such as wall pulp, bagasse pulp, reed pulp, kenaf pulp, mulberry pulp, bamboo pulp, hemp pulp, cotton pulp (for example, cotton linter) and the like.
  • the pulp can be non-beaten pulp that has not been beaten, beaten pulp that has been beaten, or a combination thereof.
  • Softwood pulp and hardwood from the standpoints of preserving aqueous liquid before actual use, ability to release aqueous liquid slowly during actual use, ability to absorb liquid containing dirt during actual use, flexibility, and ease of handling Pulp and the like are preferred.
  • heat-fusible fibers include at least the surface of a thermoplastic resin having a low melting point such as polyethylene resin or low-melting polypropylene.
  • heat-fusible fibers include polyethylene resin single component fibers Single-component fiber of polypropylene resin; core-sheath type composite synthetic fiber whose core part is polyethylene terephthalate resin and sheath part is polyethylene resin; core-sheath type whose core part is polypropylene resin and whose sheath part is polyethylene resin A composite synthetic fiber of core-sheath type in which the core part is a high melting point polypropylene resin and the sheath part is a low melting point polypropylene resin; a side-by-side type composite synthetic fiber made of polyethylene terephthalate resin and polyethylene resin; Examples include side-by-side composite synthetic fibers made of polyethylene resin. It is. These exemplified heat-fusible fibers generally have a lower hydrophilicity than pulp.
  • the first outer layer, the intermediate layer and the second outer layer are integrated with a high-pressure water stream such as a water jet to form a nonwoven fabric as described later, and then the resulting nonwoven fabric is heat-treated.
  • a high-pressure water stream such as a water jet
  • the heat-fusible fibers are strongly bonded to each other. Network structure is formed, the strength of the nonwoven fabric, especially when wet, can be improved compared to before heat fusion, and moderately high strength and bulk against compressive force are ensured during the wiping operation .
  • the laminated nonwoven fabric is While being excellent in the storage property with respect to the aqueous liquid stored beforehand before actual use, it is excellent in the performance which discharge
  • the intermediate layer preferably has a higher fiber density than the first and second outer layers.
  • the intermediate layer more preferably has a fiber density of 0.04 to 0.25 g / cm 3 .
  • the intermediate layer has a higher fiber density than the first and second outer layers, so that when the laminated nonwoven fabric of the present invention is impregnated with the aqueous liquid, the intermediate liquid is intermediated by capillary action in the first and second outer layers.
  • the aqueous liquid can be stored in the intermediate layer by quickly transferring to the layer.
  • the fiber density of the middle layer can be determined based on the thickness of the intermediate layer determined from the electron micrograph and the basis weight setting value of the intermediate layer.
  • the laminated nonwoven fabric of the present invention is at least (1) supplying a fibrous web containing hydrophilic fibers and hydrophobic fibers for forming the first outer layer; (2) supplying an intermediate layer web containing pulp and heat-fusible fibers for forming an intermediate layer on the fiber web; (3) A step of supplying a fibrous web containing hydrophilic fibers and hydrophobic fibers for forming the second outer layer on the intermediate layer web to obtain a laminate; (4) A step of subjecting the fibers between the fiber layers to high pressure water flow treatment from both sides of the laminated body, (5) a step of heat-treating the laminate to dry the laminate and joining the heat-fusible fibers together; It can manufacture by the method containing.
  • hydrophilic fiber and hydrophobic fiber are processed as they are or after being mixed with a card machine to form a fiber web having a form such as a card web.
  • An intermediate layer web for forming an intermediate layer containing pulp and heat-fusible fibers is supplied on the fiber web while being conveyed by air laying and the like, and a hydrophilic material having a form such as a card web on the intermediate layer web.
  • a laminated nonwoven fabric in which the first outer layer, the intermediate layer, and the second outer layer are integrated can be obtained by interlacing the fibers between the fiber layers.
  • the nonwoven fabric obtained in this way has a structure in which the fibers in each fiber layer and the fibers in each fiber layer are entangled by a high-pressure water stream such as a water jet, and therefore has excellent sheet strength and liquid diffusibility.
  • delivery of the aqueous liquid diffused in the surface direction of the nonwoven fabric in the first outer layer and the second outer layer to the intermediate layer can be promoted.
  • first outer layer and the second outer layer after transferring the aqueous liquid to the intermediate layer can absorb the aqueous liquid again and diffuse it in the surface direction, the absorption of the aqueous liquid in the nonwoven fabric, The process of diffusion in the surface direction and delivery to the intermediate layer can be performed repeatedly, and the continuous diffusion of the aqueous liquid can increase the amount of the aqueous liquid stored in the diffusion region of the aqueous liquid and the nonwoven fabric. it can.
  • the aqueous liquid diffused in the surface direction of the laminated nonwoven fabric in the first and second outer layers is easily delivered to the intermediate layer, absorption of the aqueous liquid, diffusion in the surface direction, and delivery to the intermediate layer in the laminated nonwoven fabric
  • the process can be performed more quickly, and as a result, the diffusion rate and diffusion area (diffusion area) of the aqueous liquid in the nonwoven can be further increased.
  • the basis weights of the first and second outer layers are each independently the entangled formation state between fibers in each layer, flexibility, touch feeling, diffusibility of aqueous liquid, sheet strength, etc. From this point, it is preferably within the range of 5 to 15 g / m 2 .
  • the basis weight of the intermediate layer is preferably in the range of 10 to 50 g / m 2 .
  • the basis weight of the intermediate layer is more preferably 30% or more of the basis weight of the laminated nonwoven fabric from the viewpoints of storage ability of the aqueous liquid and sustained release of the aqueous liquid.
  • the aqueous liquid that can be impregnated into the laminated nonwoven fabric of the present invention is water or a liquid containing water as a main component, and its composition can be determined according to the application.
  • a mixed solution of 10% by weight of propylene glycol and 90% by weight of water, a mixed solution of 7% by weight of propylene glycol, 0.3% by weight of parapene, and 92.7% by weight of water May be impregnated into tissue paper.
  • the amount of impregnation at that time is suitably 150 to 300% of the dry weight of the tissue paper.
  • the laminated nonwoven fabric of the present invention can be used as various wiping sheets such as wet tissues in addition to wet wipers. Further, the present invention is not limited to the above-described embodiment and the following examples, and can be appropriately changed without departing from the object and spirit of the present invention.
  • PET hydrophobic fibers
  • pulp (NB401 made by Weyerhaeuser) is supplied onto the card web at a set basis weight value of 20 g / m 2 to form an intermediate layer, and then on the obtained intermediate layer Then, a card web produced in the same manner as the first outer layer was supplied to form a second outer layer, and a laminate composed of the first outer layer, the intermediate layer, and the second outer layer was produced.
  • the intermediate layer is made of pulp (NB401 manufactured by Weyerhaeuser), PE / PP fiber (ES FIBERVISIONS) having a core-sheath structure in which the core component is polypropylene (PP) and the sheath component is polyethylene (PE) as a heat-fusible fiber.
  • PP polypropylene
  • PE polyethylene
  • a laminated nonwoven fabric was produced in the same manner as in Comparative Example 1 except that it was formed.
  • the heat-fusible fibers contained in the intermediate layer were fused to each other by heating when drying the laminated nonwoven fabric.
  • the thickness of the nonwoven fabric was measured using THICKNESS GAUGE UF-60 manufactured by Daiei Kagaku Seisakusho Co., Ltd.
  • the diameter of the measurement surface was 44 mm
  • a pressure of 0.3 kPa was applied to the nonwoven fabric, and the thickness was measured.
  • the specific volume of the nonwoven fabric was calculated by dividing the basis weight of the nonwoven fabric by its thickness.
  • Step 1 Samples each having a length of 140 mm and a width of 60 mm were taken from the laminated nonwoven fabrics produced in Examples 1 to 3 and Comparative Examples 1 and 2, and the initial mass (W 0 ) of each sample was measured with an electronic balance. The following steps 2 to 6 were carried out for each sample.
  • Step 2 The sample was placed on a plain weave wire mesh having a mass of 57.0 g (W 1 ), a wire diameter of 0.29 mm and 20 mesh, and the sample was immersed in a vat containing ion exchange water together with the wire mesh.
  • Step 3 The sample was pulled up from the ion exchange water together with the wire mesh, and left for 5 minutes while keeping the wire mesh horizontal.
  • Step 4 The total mass (W 2 ) of the sample and the wire mesh is measured with an electronic balance while the sample is placed on the wire mesh, and the water absorption amount (W 3 ) of the sample is obtained by subtracting the sum of W 0 and W 1 from W 2. It was.
  • Step 5 Place the water-absorbed sample on the upper surface (length 140 mm ⁇ width 60 mm) of a SUS304 rectangular pedestal installed on a horizontal surface so that the entire surface (bottom surface) of the sample is in contact with the entire upper surface of the pedestal. A weight of 840 g made of SUS304 (length 140 mm ⁇ width 60 mm) was placed on the opposite surface (upper surface) of the sample so that the entire upper surface of the sample was in contact with the entire lower surface of the weight.
  • Step 6 The mass (W 4 ) of the sample was measured with an electronic balance, and (W 0 ) was subtracted from (W 4 ) to obtain the water retention amount (W 5 ).
  • the above steps 1 to 6 were performed at a temperature of 20 ° C. and a relative humidity of 60%.
  • the water absorption amount (W 3 ), the water retention amount (W 5 ), and the liquid discharge amount (W 6 ) in Table 1 are shown in a graph.
  • Step 1 A rectangular sample having a length of 200 mm and a width of 150 mm was taken from each of the laminated nonwoven fabrics produced in Examples 1 to 3 and Comparative Examples 1 and 2, and the initial mass (W A ) of each sample was measured with an electronic balance. . The long sides of each sample to the size of the folded to 150 mm ⁇ 100 mm, was impregnated twice the mass of the ion-exchanged water of the initial mass W A of each sample to sample.
  • Step 2 The mass (W B1 ) of the filter paper laminate obtained by superposing 10 sheets of filter paper having a size of 50 mm ⁇ 50 mm (qualitative filter paper No. 2 manufactured by Advantech Toyo Co., Ltd.) is measured in advance.
  • Step 4 The second liquid discharge amount WD2 was determined by repeating Steps 2 and 3 for the sample after Step 3.
  • Step 5 A third liquid discharge amount WD3 was determined by repeating Steps 2 and 3 for the sample after Step 4.
  • Step 6 A fourth liquid discharge amount WD4 was obtained by repeating Steps 2 and 3 for the sample after Step 5.
  • Step 7 A fifth liquid discharge amount WD5 was obtained by repeating Steps 2 and 3 for the sample after Step 6.
  • Step 8 The sixth liquid discharge amount WD6 was determined by repeating Steps 2 and 3 for the sample after Step 7.
  • Step 9 The seventh liquid discharge amount WD7 was determined by repeating Steps 2 and 3 for the sample after Step 8.
  • Step 10 The eighth liquid discharge amount WD8 was determined by repeating Steps 2 and 3 for the sample after Step 9.
  • Step 11 The ninth liquid discharge amount WD9 was determined by repeating Steps 2 and 3 for the sample after Step 10.
  • Step 12 The tenth liquid discharge amount WD10 was determined by repeating Steps 2 and 3 for the sample after Step 11. The above steps 1 to 12 were performed at a temperature of 20 ° C. and a relative humidity of 60%. In Steps 4 to 12, a new filter paper laminate prepared as described in Step 2 was used. Value of liquid discharge amount W D1 to W D10 and total amount of W D1 to W D10 when basis weight is 40 g / m 2 (ie, measured liquid discharge amount ⁇ 40 (g / m 2 ) / measured basis weight (Value of (g / m 2 )) and the converted value is shown in Table 2. FIG. 3 is a graph showing the liquid discharge amounts W D1 to W D10 in Table 2.
  • the laminated nonwoven fabrics of Examples 1 to 3 according to the present invention have higher water absorption (that is, storage) and pressure than the nonwoven fabrics of Comparative Examples 1 and 2. It can be seen that even when it is repeatedly added, it is superior in maintaining higher water retention and in the ability to gradually release a larger amount of water.
  • the first liquid discharge amount of Examples 1 to 3 is at a level about 1.3 times higher than the first liquid discharge amount of Comparative Examples 1 and 2.
  • the laminated nonwoven fabric of the present invention is excellent in the performance of preliminarily storing the aqueous liquid before actual use, and is excellent in the performance of gradually releasing the stored aqueous liquid. It is useful as a disposable wiping sheet such as a wet wiper for cleaning the surface of an article.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

Abstract

L'invention concerne un non-tissé stratifié (1) qui comprend une première couche externe (11), une seconde couche externe (12) située sur le côté opposé à la première couche externe (11), et une couche intermédiaire (13) située entre la première couche externe (11) et la seconde couche externe (12), la première couche externe (11) et la seconde couche externe (12) comprenant chacune des fibres hydrophobes et des fibres hydrophiles mais ne contenant pas de fibres pouvant être liées par fusion, la couche intermédiaire (13) comprenant une pâte et des fibres pouvant être liées par fusion, la quantité de fibres pouvant être liées par fusion étant de 20 % en masse ou plus mais inférieure à 80 % en masse par rapport à la masse totale de la couche intermédiaire (13), et la couche intermédiaire (13) comprenant des parties où les fibres pouvant être liées par fusion ont été liées les unes aux autres. Le non-tissé stratifié (1) est non seulement excellent en termes de capacité à maintenir un liquide aqueux à l'intérieur de ce dernier à l'avance avant utilisation réelle, mais également excellent en termes de capacité à libérer progressivement le liquide aqueux maintenu.
PCT/JP2016/084842 2015-12-28 2016-11-24 Non-tissé stratifié WO2017115590A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680076676.6A CN108474158B (zh) 2015-12-28 2016-11-24 层叠无纺布

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-257471 2015-12-28
JP2015257471A JP6444296B2 (ja) 2015-12-28 2015-12-28 積層不織布

Publications (1)

Publication Number Publication Date
WO2017115590A1 true WO2017115590A1 (fr) 2017-07-06

Family

ID=59224852

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/084842 WO2017115590A1 (fr) 2015-12-28 2016-11-24 Non-tissé stratifié

Country Status (4)

Country Link
JP (1) JP6444296B2 (fr)
CN (1) CN108474158B (fr)
TW (1) TW201726998A (fr)
WO (1) WO2017115590A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022549309A (ja) * 2019-09-30 2022-11-24 モノソル リミテッド ライアビリティ カンパニー 不織布水溶性複合材料構造

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109023721B (zh) * 2018-10-23 2021-05-18 昆山吉美川纤维科技有限公司 一种密度梯度纤维垫的制备方法及纤维垫
JP7228156B2 (ja) * 2019-02-06 2023-02-24 ユニチカ株式会社 液徐放性積層長繊維不織布
CN111074689B (zh) * 2019-12-31 2022-05-03 杭州洁诺实业有限公司 复合纸的生产方法
JP7527331B2 (ja) 2021-09-30 2024-08-02 大和紡績株式会社 積層不織布およびその製造方法、液体含浸シート、液体含浸皮膚被覆シート、ならびにフェイスマスク
JP7072708B1 (ja) 2021-11-12 2022-05-20 ユニ・チャーム株式会社 積層不織布

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08311755A (ja) * 1995-05-16 1996-11-26 Honshu Paper Co Ltd 難燃性液体吸収体
JP2002325698A (ja) * 2001-05-02 2002-11-12 Kao Corp 清拭用シート基材
JP2003089957A (ja) * 2002-06-21 2003-03-28 Daiwabo Co Ltd ワイパー用積層物の製造方法
JP2005177176A (ja) * 2003-12-19 2005-07-07 Daiwabo Co Ltd 化粧料含浸用基材及びこれを用いた顔面被覆化粧料シート
JP2006109984A (ja) * 2004-10-13 2006-04-27 Daiwabo Co Ltd 対物用液体塗布シート用積層体
JP2006241653A (ja) * 2005-03-07 2006-09-14 Solotex Corp 吸水性不織布構造体
WO2007135862A1 (fr) * 2006-05-19 2007-11-29 Kinsei Seishi Co., Ltd. Serviette de nettoyage pour la peau
JP2008237791A (ja) * 2007-03-29 2008-10-09 Daio Paper Corp 紙製ワイパー
JP2009228138A (ja) * 2008-03-19 2009-10-08 Mitsubishi Paper Mills Ltd 裏打ち用ガラス繊維不織布
JP2011088635A (ja) * 2009-10-20 2011-05-06 Sanwa Seishi Kk ドリップシート

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3183818B2 (ja) * 1996-02-29 2001-07-09 ユニ・チャーム株式会社 ウェットティッシュ積層体
EP1299597A1 (fr) * 1999-08-19 2003-04-09 The Procter & Gamble Company Mouchoirs multicouches presentant une couche absorbante a epaisseur elevee et a faible densite
JP4458903B2 (ja) * 2004-04-01 2010-04-28 ユニ・チャーム株式会社 ワイパーおよびその製造方法
US20060052269A1 (en) * 2004-09-01 2006-03-09 Panandiker Rajan K Premoistened disposable wipe
JP5112677B2 (ja) * 2005-12-28 2013-01-09 ユニ・チャーム株式会社 吸汗性シートおよびその製造方法
WO2010126109A1 (fr) * 2009-04-30 2010-11-04 旭化成せんい株式会社 Tissu non-tissé stratifié
JP5562955B2 (ja) * 2009-07-07 2014-07-30 クラレクラフレックス株式会社 積層シート及びその製造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08311755A (ja) * 1995-05-16 1996-11-26 Honshu Paper Co Ltd 難燃性液体吸収体
JP2002325698A (ja) * 2001-05-02 2002-11-12 Kao Corp 清拭用シート基材
JP2003089957A (ja) * 2002-06-21 2003-03-28 Daiwabo Co Ltd ワイパー用積層物の製造方法
JP2005177176A (ja) * 2003-12-19 2005-07-07 Daiwabo Co Ltd 化粧料含浸用基材及びこれを用いた顔面被覆化粧料シート
JP2006109984A (ja) * 2004-10-13 2006-04-27 Daiwabo Co Ltd 対物用液体塗布シート用積層体
JP2006241653A (ja) * 2005-03-07 2006-09-14 Solotex Corp 吸水性不織布構造体
WO2007135862A1 (fr) * 2006-05-19 2007-11-29 Kinsei Seishi Co., Ltd. Serviette de nettoyage pour la peau
JP2008237791A (ja) * 2007-03-29 2008-10-09 Daio Paper Corp 紙製ワイパー
JP2009228138A (ja) * 2008-03-19 2009-10-08 Mitsubishi Paper Mills Ltd 裏打ち用ガラス繊維不織布
JP2011088635A (ja) * 2009-10-20 2011-05-06 Sanwa Seishi Kk ドリップシート

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022549309A (ja) * 2019-09-30 2022-11-24 モノソル リミテッド ライアビリティ カンパニー 不織布水溶性複合材料構造
JP7512375B2 (ja) 2019-09-30 2024-07-08 モノソル リミテッド ライアビリティ カンパニー 不織布水溶性複合材料構造

Also Published As

Publication number Publication date
CN108474158A (zh) 2018-08-31
CN108474158B (zh) 2024-08-02
TW201726998A (zh) 2017-08-01
JP2017119931A (ja) 2017-07-06
JP6444296B2 (ja) 2018-12-26

Similar Documents

Publication Publication Date Title
JP6444296B2 (ja) 積層不織布
RU2415638C1 (ru) Ламинат, имеющий улучшенные свойства при протирке, и способ его получения
EP2692924B1 (fr) Procédé de fabrication des non-tissés calandrés et calandre
JP6726422B2 (ja) ウェットワイピングシート用不織布および対人用ウェットワイピングシート
US20060206071A1 (en) Unitary stratified composite
KR101141403B1 (ko) 습윤- 또는 건조-용도의 생분해성 집진 시트
EP2692923A1 (fr) Tissus non-tissés contentant acide polylactique
MX2015000481A (es) Trama emparedada absorbente suave que comprende altas concentraciones de material superabsorbente, fibras celulosicas y aglutinante aplicado en la superficie.
JP2019170756A (ja) 液体含浸皮膚被覆シート用不織布および液体含浸皮膚被覆シート
JP6560488B2 (ja) 液体含浸皮膚被覆シート用不織布および液体含浸皮膚被覆シート
JP4060885B2 (ja) 吸収シートまたはウェブ材料および乾式形成によってこの材料を製造する方法
JP2011117095A (ja) 不織布及びそれを用いた拭き取り材
JP2022501525A (ja) 一体型不織布材料
JP2017128107A (ja) 清拭シート
JP3139215B2 (ja) パルプ複合シート
JP7307632B2 (ja) 複合型不織布の製造方法
JP2014004264A (ja) ネールエナメル落とし用シート
JP2014004264A6 (ja) ネールエナメル落とし用シート
JP6173275B2 (ja) 吸収体、及び当該吸収体を含む吸収性物品
JP2023503774A (ja) 吸収性不織布材料
JP2004016559A (ja) 清掃用シート
JP4693341B2 (ja) 清浄用不織布及びその製造方法、並びに、清浄用不織布積層体
JP7359677B2 (ja) 湿式ワイピングシート
WO2023084799A1 (fr) Non-tissé multicouche
JPH06299456A (ja) 不織布複合シートの製造法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16881570

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16881570

Country of ref document: EP

Kind code of ref document: A1