WO2014132690A1 - 不織布 - Google Patents
不織布 Download PDFInfo
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- WO2014132690A1 WO2014132690A1 PCT/JP2014/050632 JP2014050632W WO2014132690A1 WO 2014132690 A1 WO2014132690 A1 WO 2014132690A1 JP 2014050632 W JP2014050632 W JP 2014050632W WO 2014132690 A1 WO2014132690 A1 WO 2014132690A1
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/43828—Composite fibres sheath-core
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
- A47L13/16—Cloths; Pads; Sponges
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
- A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/43832—Composite fibres side-by-side
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4391—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
- D04H1/43912—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres fibres with noncircular cross-sections
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/10—Details of applicators
- A45D2200/1009—Applicators comprising a pad, tissue, sponge, or the like
- A45D2200/1018—Applicators comprising a pad, tissue, sponge, or the like comprising a pad, i.e. a cushion-like mass of soft material, with or without gripping means
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
Definitions
- the present invention has excellent water absorption and high liquid retentivity such as water and chemicals, and further has excellent bulkiness, flexibility and touch, so it is suitably used for skin cosmetics or wiping. It is related with the nonwoven fabric made.
- the present invention has a high liquid storability, especially when used for cosmetics, and has the ability to release cosmetic liquids as needed, and has high wiping properties without damaging the skin when wiping.
- the wiped soil relates to a nonwoven suitable for wipers that can be retained within the nonwoven and prevent recontamination.
- non-woven fabrics have been proposed as non-woven fabrics for interpersonal cleaning used in a wet state.
- a non-woven fabric having high flexibility that prevents bulk sag when wet is proposed (see Patent Document 1). .
- this proposed nonwoven fabric has good touchability by using polyolefin fibers, it does not have sufficient rigidity because it does not have sufficient rigidity, and also has sufficient wiping properties. There is a problem that is not.
- a non-woven fabric for wipers that is excellent in bulkiness, wiping property and actual feeling of use has been proposed by using atypical cross-section fibers and fibrillated fibers (see Patent Document 2).
- the fiber has an irregular cross section, the liquid retention and wiping properties of the nonwoven fabric are not improved regardless of the shape, and the fibrillated fiber often has a sharp fiber cross section, and is used for interpersonal wiping. There is a problem that there is a risk of damaging the skin when used in the skin.
- a nonwoven fabric including a modified cross-section fiber having pores has been proposed (see Patent Document 3).
- the liquid retaining property is improved by the cross-sectional shape, but there is a problem that the liquid retaining performance is not sufficient because the shape retaining property is inferior, for example, the pores are crushed.
- the main fiber has a single fiber cross-section with a flatness of 2.0 or less and two or more openings having an opening angle of less than 120 degrees, and is excellent in tensile strength and permeability.
- Article sheet materials have been proposed (see Patent Document 4). However, although this proposed nonwoven fabric has good anti-permeability due to irregular reflection of light, there is a problem that the nonwoven fabric is not sufficiently flexible because of its low flatness.
- the object of the present invention is to have a high liquid absorption and discharge capability of liquids that could not be achieved only with the above-mentioned conventional technology, natural fibers and cellulosic fibers, and have moderate bulkiness and flexibility, and touch
- An object of the present invention is to provide a non-woven fabric suitable for wiper use such as for interpersonal wiping and beauty use, which has less irritation to the skin and good wiping properties.
- the present invention can improve the wiping property without damaging the skin by using a flat multi-leaf cross-sectional polyester fiber and a cellulosic fiber together.
- the inventors have found that the liquid absorbing power and the liquid retaining power can be improved, and that the liquid can be discharged during use, and the present invention has been made.
- the nonwoven fabric of the present invention is a nonwoven fabric obtained by blending 20 to 80% by mass of flat multi-leaf cross-sectional polyester fiber and 20 to 80% by mass of cellulose-based fiber, and has a cross-sectional shape of the flat multi-leaf cross-sectional polyester fiber. Is a flat shape having 6 or more protrusions, and the flat multi-leaf cross-section polyester fiber connects the maximum length of the cross-section A, the maximum width B, and the vertices of adjacent protrusions in the maximum unevenness portion.
- the flatness of the following formula (1) and the following formula (2) A nonwoven fabric characterized by satisfying the degree of profile at the same time.
- Flatness (A / B) 2.0 to 3.0 (1)
- Deformation degree (C / D) 1.0 to 5.0 (2)
- the maximum length A of the cross section of the multi-leaf flat cross-sectional polyester fiber is set as the axis of symmetry, and the cross section maximum width B among the line segments between the opposite convex vertices.
- the convex portion ratio defined by the following formula (3) is satisfied.
- ⁇ Convex ratio (E / B) 0.6 to 0.9 (3)
- the single fiber fineness of the said flat multi-leaf cross-section polyester fiber is 2.0 dtex or less.
- the above-mentioned nonwoven fabric of the present invention is particularly suitably used as a nonwoven fabric for wipers.
- the present invention has a high absorbability and release ability of liquids such as water and chemicals, and also has moderate bulkiness and flexibility, has low irritation to the skin and has good wiping properties, particularly A non-woven fabric suitable for interpersonal wiping and cosmetics can be obtained.
- FIG. 1 is a cross-sectional view for illustrating the cross-sectional shape of a multi-leaf flat cross-sectional polyester fiber provided in the nonwoven fabric of the present invention having a plurality of (eight) convex portions on the circumference of the fiber cross-section.
- the cellulosic fiber used in the present invention is at least one cellulosic material selected from natural fibers such as hemp, cotton and silk, regenerated fibers such as viscose rayon, cupra and solvent-proof cellulose, and semi-synthetic fibers such as acetate. Selected from fibers. Among them, regenerated fibers such as viscose rayon and solvent-spun cellulose are preferably used from the viewpoint of handleability and versatility.
- the cellulosic fibers used in the present invention preferably have a flat shape with an arbitrary cross-sectional shape having irregularities on the circumference.
- the greater the number of irregularities on the circumference the higher the liquid-absorbing property, and further, the liquid is uniformly diffused over the entire surface of the nonwoven fabric by capillary action, resulting in less water spots.
- the number of convex portions on the circumference is preferably 5 or more, more preferably 8 or more.
- grooved part is a curved shape from a viewpoint of the touch property.
- the single fiber fineness of the cellulosic fibers is preferably 1.0 to 5 dtex.
- the single fiber fineness is more preferably 1.2 to 2.2 dtex.
- the single fiber fineness is less than 1.0 dtex, it is easy to wind around the card cylinder, and the process passability may be significantly reduced. As a result, the unevenness of the nonwoven fabric tends to occur.
- the single fiber fineness exceeds 5 dtex, particularly when used for interpersonal use, the texture of the nonwoven fabric becomes stiff and tends to be undesirable in use.
- gap between fibers becomes large when a single fiber becomes thick, there exists a tendency for liquid retention to fall remarkably.
- the fiber length of the cellulosic fibers is highly entangled with other constituent fibers such as polyester fibers, maintains liquid absorbency, liquid retention and release properties, and obtains a non-woven fabric that has a uniform feel and good productivity. From this viewpoint, the thickness is preferably 30 to 80 mm. The fiber length is more preferably 35 to 64 mm. Examples of commercially available cellulose fibers include rayon manufactured by Daiwabo Rayon, Japan.
- the cellulose fiber content is 20 to 80% by mass.
- the mixing ratio (content ratio) of the cellulosic fibers is less than 20% by mass, the water absorption impregnating the liquid is weakened, so the power to keep moisture in the nonwoven fabric is weakened, and no liquid is required from the nonwoven fabric during use. Will flow down.
- the flexibility specific to a cellulosic fiber is impaired, the feeling of touch at the time of use worsens.
- the mixing ratio of the cellulosic fibers exceeds 80% by mass, the impregnated liquid is retained in the fibers, and a sufficient amount of liquid cannot be quickly released when necessary.
- the bulkiness of the nonwoven fabric is impaired, the amount of liquid retained is reduced, and the voluminous hand feeling is also impaired.
- the preferred content of cellulosic fibers is 40 to 60% by mass.
- the polyester constituting the polyester fiber used in the present invention includes a high molecular polymer produced by a condensation reaction of terephthalic acid and ethylene glycol or butylene glycol, and sebacic acid, adipic acid, trimellitic acid, isophthalic acid, and paraoxybenzoic acid. It means a condensate of odorous acid and the like with ethylene glycol or butylene glycol, and a polyester polymer containing other polyesters.
- the flat multi-leaf cross-sectional polyester fiber used in the present invention is a flat fiber having a convex portion having a cross-sectional shape of 6 or more.
- the flat multi-leaf cross-sectional polyester fiber used in the present invention is a flat polyester fiber having a cross section having six or more convex portions. If the number of convex portions present in the circumferential shape of the cross-sectional shape is less than 6, the gaps formed between adjacent fibers are reduced, resulting in poor water absorption and liquid retention. Moreover, since the cross-sectional shape is a flat shape, it becomes possible to form a space
- FIG. 1 shows an example of a single fiber cross-sectional shape of a flat multi-leaf polyester fiber used in the present invention.
- FIG. 1 the cross-sectional shape of the multileaf flat cross-section polyester fiber with which the nonwoven fabric of this invention which has several (8 pieces) convex part on the circumference of a fiber cross section is illustrated is illustrated.
- a flat polyester fiber having 6 or more convex portions is used, preferably 8 or more, and more preferably 10 or more. Further, the upper limit value of the number of convex portions is preferably 12. Moreover, it is preferable that the shape of a convex part is the curved shape from a viewpoint of the touch property.
- the flat multilobal cross-sectional polyester fiber used in the present invention has a flat multilobal cross-sectional shape in a single fiber cross section that satisfies the flatness of the following formula (1) and the deformity of the following formula (2) at the same time. It consists of fibers.
- Flatness (A / B) 2.0 to 3.0 (1)
- Deformation degree (C / D) 1.0 to 5.0 (2)
- A is the length of the longest line segment of the cross section of the flat multilobal shape.
- Said B says the length of the largest line segment which connects between the vertexes of the convex part which intersects perpendicularly with the length A of the line segment.
- Said C is the largest unevenness which said flat multilobal form makes, and says the length of the line segment which connects between the vertexes of an adjacent convex part.
- said D says the length of the perpendicular drawn from the line which connects between said convex parts to the bottom point of a recessed part.
- the flat multi-leaf cross-sectional polyester fiber used in the above mixed cotton is a convex portion adjacent to the maximum length of the cross section A, the maximum width B, and the maximum uneven portion.
- the flatness of the above formula (1) It consists of the polyester-type fiber which satisfies the irregularity degree of following formula (2) simultaneously.
- the hair fallability of the fiber is deteriorated and a soft texture cannot be obtained.
- the flatness (A / B) exceeds 3.0, the harshness is small and it becomes easy to get loose. Moreover, there exists a tendency for the yarn-making property to deteriorate and the deformity.
- the flatness (A / B) is preferably 2.0 to 2.7, more preferably 2.0 to 2.5.
- the degree of irregularity (C / D) represents the size of the concave portion between the convex portions in the flat multilobal shape.
- the degree of profile (C / D) increases, the recesses become shallower and the gaps formed between the fibers also become smaller, so that the water-absorbing ability is lowered and the dirt scraping property tends to be lowered. Therefore, the degree of profile (C / D) is 5.0 or less.
- the degree of irregularity (C / D) is too small, the concave portion of the fiber cross section tends to bend and the flat shape tends to be unable to be maintained.
- the degree of irregularity (C / D) is 1.0 or more.
- the degree of profile (C / D) is in the range of 1.0 to 5.0 from the above point. Further, the degree of profile (C / D) is more preferably 2.0 to 4.0 from the viewpoint of water absorption and wiping properties.
- the content of the flat multileaf polyester fiber used in the present invention in the nonwoven fabric is 20 to 80% by mass.
- the mixing ratio (content ratio) of the flat multilobal cross-section polyester fiber is less than 20% by mass, the nonwoven fabric loses its bulk, the liquid retaining property is deteriorated, and the texture of the nonwoven fabric is also hardened.
- the mixing ratio (content ratio) of the flat multi-leaf cross-sectional polyester fiber exceeds 80% by weight, the bulkiness of the nonwoven fabric is improved, but the gap between the fibers becomes too large, so that liquid flows down from the nonwoven fabric during use. There is a problem of end.
- the content of the flat multilobal polyester fiber in the nonwoven fabric is preferably 40 to 60% by mass.
- the flat multilobal cross-section polyester fiber used in the present invention has the maximum length A of the cross section as the axis of symmetry, and is the longest length excluding the maximum cross section width B among the opposing line segments between the vertices.
- E it is made of polyester fiber satisfying the convex portion ratio defined by the following formula (3).
- ⁇ Convex ratio (E / B) 0.6 to 0.9 (3)
- the convex portion ratio (E / B) has a meaning as an index for measuring the degree of distortion of a substantially elliptical shape obtained when a line connecting the convex vertices having the maximum widths B and E and the maximum length A is drawn.
- the convex portion ratio is preferably 0.6 or more.
- the convex portion ratio (E / B) is preferably 0.9 or less.
- the convex portion ratio (E / B) is preferably 0.6 to 0.9 from the above point.
- the convex portion ratio (E / B) is preferably 0.6 to 0.8, more preferably 0.7 to 0.8, from the viewpoint of the balance.
- the single fiber fineness of the flat multilobal polyester fiber used in the present invention is preferably 2.0 dtex or less.
- the single fiber fineness is more preferably 1.0 to 2.0 dtex, still more preferably 1.2 to 1.8 dtex. If the single fiber fineness exceeds 2 dtex, the rigidity unique to the polyester fiber becomes strong, so that the stimulation of the touch feeling becomes strong and the soft texture may be impaired. Furthermore, since the voids formed between the fibers are too large, the liquid retention amount is increased, but the liquid retention property is deteriorated, and the liquid tends to flow down from the nonwoven fabric during use. On the other hand, when the single fiber fineness is smaller than 1.0 dtex, the process passability in the card process is deteriorated and the productivity tends to be lowered.
- the fiber length of the flat multi-leafed polyester fiber is preferably 30 to 64 mm from the viewpoint of fiber removal of the nonwoven fabric.
- the fiber length is more preferably 35 to 51 mm.
- the nonwoven fabric of the present invention may contain a heat-sealing fiber as another fiber.
- a heat-sealing fiber By including the heat-sealing fiber in the nonwoven fabric, the morphological stability, which is one of the important functions when used for the wiping operation, can be improved by heat-sealing the heat-sealing fiber.
- the heat-sealing fiber may be a single-component heat-sealing fiber, but a composite thermal property such as a side-by-side type or a core-sheath type consisting of two or more types of resin components including a portion not fused by heat treatment. Use of a fused fiber is a more desirable mode because the fiber strength is maintained by a portion that is not fused.
- the components constituting the heat-sealing fiber include 6 nylon and polyethylene, polypropylene and polyethylene, polypropylene and ethylene-vinyl acetate copolymer, polyester and polypropylene, polyester and polyethylene, 6 nylon and 66 nylon, and high density polyester.
- a combination of low density polyester and the like can be exemplified.
- a preferable mixing ratio of the heat-fusible fiber is 5 to 20% by mass with respect to the mass of the nonwoven fabric.
- the above-mentioned flat multi-leaf cross-section polyester fiber and cellulose fiber are made into a fiber web with a card.
- the fiber web formed by the card is then sent to the spunlace process by feed lattice, processed by high-pressure hydroentanglement and processed into a sheet shape.
- the nonwoven fabric after the spunlace processing is sent to a drying process by a conveyor, and when the heat-treated fibers are used, heat treatment is performed simultaneously with drying at a temperature at which only the heat-bonded fibers are melted.
- the non-woven fabric produced and produced in this way has excellent water absorption and softness and is suitable as a non-woven fabric for personal wiping and beauty purposes.
- the sheet obtained from the nonwoven fabric produced in this way has excellent water absorption and high liquid retention properties such as water and chemicals, and further has excellent bulkiness, flexibility, and touch.
- a non-woven fabric used for cosmetics or cleaning Is suitable as a non-woven fabric used for cosmetics or cleaning.
- the liquid retainability of the cosmetic liquid is high, and it can have a performance that can be released as needed.
- wiping it has high wiping property without damaging the skin, and the wiped dirt is caught in the concave part of the fiber surface, so it is a nonwoven fabric that can keep the dirt in the nonwoven fabric and prevent recontamination, High wiping effect.
- end use include baby butt wipes, wet tissue, cleansing sheets, facial sheets, and the like.
- ⁇ Method for testing thickness of nonwoven fabric The thickness of five non-woven fabrics having a basis weight of 50 g / m 2 is measured with a caliper.
- ⁇ Wipeability> A 10 cm square test piece is cut out from a non-woven fabric having a basis weight of 50 g / m 2 and is used after being folded in four. The test piece is impregnated with 3 times the mass of water. The performance was compared by applying lipstick to the arms of five subjects and wiping them off. The contents of the evaluation are as follows, and ⁇ was accepted. ⁇ : Good wiping property ⁇ : Some lipstick remains ⁇ : Most lipstick cannot be wiped off.
- ⁇ Feel> A 10 cm square test piece is cut out from a non-woven fabric having a basis weight of 50 g / m 2 and is used after being folded in four. The test piece is impregnated with 3 times the mass of water. Five test subjects' arms were wiped, and the tactile sensation was evaluated according to the following criteria. ⁇ : The touch is good. ⁇ : The skin after wiping is somewhat uncomfortable. ⁇ : The skin after wiping is tinged.
- ⁇ Hand feeling (texture)> A 10 cm square test piece is cut out from a non-woven fabric having a basis weight of 50 g / m 2 and is used after being folded in four. The test piece is impregnated with 3 times the mass of water. Five subjects held the test piece and evaluated the tactile sensation according to the following criteria. ⁇ : The texture is soft. ⁇ : The texture is slightly hard. X: The texture is hard.
- Example 1 Flat multileaf polyester fiber having a flatness of 2.1, an irregularity of 2.7, a convexity ratio of 0.8 and a cross-sectional shape of eight convexities (single fiber fineness: 1.7 dtex, fiber length : 51 mm) 20% by mass and rayon fiber (single fiber fineness: 1.7 dtex, fiber length: 51 mm) after uniformly blending, a card fiber web having a basis weight of 60 g / cm 2 was produced by a conventional method, A water jet water pressure of 50 kg / cm 2 , a speed of 1 m / min, nozzle shape: 0.1 mm ⁇ , 0.6 mm pitch, 834 holes, 500 mm effective width, and a sheet by double-sided processing, then at a temperature of 120 ° C. It dried and obtained the nonwoven fabric of 50 g / m ⁇ 2 > of fabric weights.
- the fiber configuration of the nonwoven fabric is shown in Table 1, and the evaluation results are shown in Table 2.
- Example 2 A flat multi-leaf polyester fiber having a flatness of 2.1, an irregularity of 2.7, a convexity ratio of 0.8, and a cross-sectional shape of 8 convexities (single fiber fineness 1.7 dtex, fiber length 51 mm) and 50% by weight of rayon fiber (single fiber fineness 1.7 dtex, fiber length 51 mm) were uniformly mixed, and then a card fiber web having a basis weight of 60 g / cm 2 was produced by a conventional method.
- Example 3 Flat multileaf polyester fiber having a flatness of 2.1, an irregularity of 2.7, a convexity ratio of 0.8, and a cross-sectional shape of 8 convexities (single fiber fineness: 1.7 dtex, fiber length : 51 mm) 80% by mass and rayon fiber (single fiber fineness: 1.7 dtex, fiber length: 51 mm) were uniformly mixed, and then a card fiber web having a basis weight of 60 g / cm 2 was prepared by a conventional method.
- the fiber configuration of the nonwoven fabric is shown in Table 1, and the evaluation results are shown in Table 2.
- a card fiber web having a rayon fiber (single fiber fineness: 1.7 dtex, fiber length: 51 mm) and a mass per unit area of 60 g / cm 2 is prepared by a conventional method, and the water jet water pressure is 50 kg / cm 2 and the speed is 1 m / Minute, nozzle shape: 0.1 mm ⁇ , 0.6 mm pitch, 834 holes, 500 mm effective width, a sheet was prepared by double-sided processing, and further dried at a temperature of 120 ° C. to obtain a nonwoven fabric having a basis weight of 50 g / m 2 . .
- the fiber configuration of the nonwoven fabric is shown in Table 3, and the evaluation results are shown in Table 4.
- a nonwoven fabric made of 20 to 80% by mass of a flat cross-sectional polyester fiber having 20 convex parts and a rayon of 20 to 80% by mass having 8 convex portions on the circumference of the cross section of the fiber. Since the liquid retention rate is high, it is easy to retain liquids such as water and chemicals, and the residual rate is low, so it was confirmed that the retained chemicals can be released and used effectively. Moreover, the wiping property, hand feeling (texture) and touch were also good.
- Comparative Example 1 when the content of the cellulosic fiber exceeds 80% by mass, the touch is good, but the bulkiness of the nonwoven fabric is impaired. Since the system fiber retains the chemical solution in the fiber, the remaining rate is high, which causes a poor release of the chemical solution.
- Comparative Example 2 when the content of the flat multi-leaf cross-sectional polyester exceeds 80% by mass, the flexibility of the cellulosic fibers is impaired, and the touch becomes worse.
- Comparative Examples 3 to 7 when other irregular cross-section polyester fibers that are not flat are used, the liquid retention is increased, but the residual ratio is extremely low. Retention is weak and causes liquid flow when using nonwoven fabric. Moreover, since it is not flat, the texture is hard and the touch is remarkably deteriorated.
Abstract
Description
・扁平度(A/B)=2.0~3.0 ・・・ (1)
・異形度(C/D)=1.0~5.0 ・・・ (2)
本発明の不織布の好ましい態様によれば、前記の多葉扁平断面ポリエステル系繊維の横断面の最大長さAを対称軸とし、対向する両凸部頂点間線分のうち、横断面最大幅Bを除いて最長となる長さをEとするとき、下記式(3)で定義される凸部比を満足することである。
・凸部比(E/B)=0.6~0.9 ・・・ (3)
本発明の不織布の好ましい態様によれば、前記の扁平多葉断面ポリエステル系繊維の単繊維繊度は2.0dtex以下である。
・扁平度(A/B)=2.0~3.0 ・・・ (1)
・異形度(C/D)=1.0~5.0 ・・・ (2)
ここで、上記Aは、上記の扁平多葉形の横断面の最長の線分の長さである。上記Bは、線分の長さAに垂直に交わる凸部の頂点間を結ぶ最大幅の線分の長さをいう。上記Cは、上記の扁平多葉形のなす最も大きな凹凸で、隣り合う凸部の頂点間を結ぶ線分の長さをいう。そして、上記Dは、上記の凸部間を結ぶ線から凹部の底点に下ろした垂線の長さをいう。
・凸部比(E/B)=0.6~0.9 ・・・ (3)
凸部比(E/B)は、最大幅BおよびE、最大長さAの各凸部頂点を結ぶ線を描いた際に得られる略楕円形状の歪度合いを測る指標としての意味を持つ。凸部比があまりに小さい場合、凹部深さが減少するとともに、その横断面形状は限りなく扁平十字形に近似した形状となる。そのため、繊維間の空壁率が低下し、吸保水性が低下する。また、肌に触れた際、扁平十字形状に近しくなるために接触する凸部数が減少し、肌触り感とソフト性も低下する。従って、凸部比は0.6以上であることが好ましい。
するため、本発明の目的とする対人向け清拭用や美容用の不織布として最適である。
目付50g/m2の不織布を5枚重ねた厚さを、ノギスで測定する。
JIS L 1907 7.2(2010年版)の吸水率に準じて測定する。目付50g/m2の不織布から試験片10cm角に切り出して、質量(A)を測定する。その試験片をイオン交換水の中に30秒間浸した。その後、試験片の一角をピンセットでつまんで液から取り出し、1分後の質量(B)を測定する。
保液率(C)は、下記式で算出される。
・保液率C(%)=(B-A)/A×100。
JIS L 1907 7.2(2010年版)の吸水率に準じて測定する。目付50g/m2の不織布から試験片10cm角に切り出して、質量(A)を測定する。その試験片をイオン交換水の中に30秒間浸した。その後、試験片の一角をピンセットでつまんで液から取り出し、5分後の質量(D)を測定する。
残存率(E)は、下記式で算出される。
・E(%)=(D-A)/A×100。
目付50g/m2の不織布から試験片10cm角に切り出して4つ折りにして使用する。試験片に質量の3倍の水を含浸させる。5名の被験者の腕に口紅を塗布して、拭き取ることにより性能を比較した。評価内容は、次のとおりであり、○を合格とした。
○:拭き取り性良好
△:やや口紅が残る
×:ほとんど口紅が拭き取れない。
目付50g/m2の不織布から試験片10cm角に切り出して4つ折りにして使用する。試験片に質量の3倍の水を含浸させる。5名の被験者の腕を拭いてもらい、次の基準に従って触感評価し、○を合格とした。
○:肌触りが良い
△:拭いた後の肌がやや違和感有り
×:拭いた後の肌がチクチクする。
目付50g/m2の不織布から試験片10cm角に切り出して4つ折りにして使用する。試験片に質量の3倍の水を含浸させる。5名の被験者に試験片を握ってもらい、次の基準に従って触感評価し、○を合格とした。
○:風合いが柔らか
△:風合いがやや硬い
×:風合いが硬い。
扁平度が2.1、異形度が2.7、凸部比が0.8で横断面形状が8個の凸部を有する扁平多葉断面ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm)20質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)80質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2、速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表1に、評価結果を表2に示す。
扁平度が2.1、異形度が2.7、凸部比が0.8で横断面形状が8個の凸部を有する扁平多葉断面ポリエステル系繊維(単繊維繊度1.7dtex、繊維長51mm)50質量%とレーヨン繊維(単繊維繊度1.7dtex、繊維長51mm)50質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2、速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表1に、評価結果を表2に示す。
扁平度が2.1、異形度が2.7、凸部比が0.8で横断面形状が8個の凸部を有する扁平多葉断面ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm)80質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)20質量%を均一に混綿した後、目付60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧50kg/cm2、速度1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付50g/m2の不織布を得た。不織布の繊維構成を表1に、評価結果を表2に示す。
扁平度が2.1、異形度が2.7、凸部比が0.8で横断面形状が8個の凸部を有する扁平多葉断面ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm)15質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)85質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2,速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表3に、評価結果を表4に示す。
扁平度が2.1、異形度が2.7、凸部比が0.8で横断面形状が8個の凸部を有する扁平多葉断面ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm)85質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)15質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2、速度1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表3に、評価結果を表4に示す。
レーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)100質量%で目付60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2,速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表3に、評価結果を表4に示す。
扁平度が1.0で横断面形状の円周上に6個の凸部を有する異形断面ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm、)80質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)20質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2、速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表3に、評価結果を表4に示す。
横断面形状の円周上に3個の凸部を有する異形断面(Y型)ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm)80質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)20質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2、速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表3に、評価結果を表4に示す。
横断面形状がC型を有する異形断面ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm)80質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)20質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2、速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表3に、評価結果を表4に示す。
丸形断面ポリエステル繊維(単繊維繊度:1.7dtex、繊維長:51mm)80質量%とレーヨン繊維(単繊維繊度:1.7dtex、繊維長:51mm)20質量%を均一に混綿した後、目付が60g/cm2のカード繊維ウェブを常法により作製し、ウォータージェットの水圧が50kg/cm2、速度が1m/分、ノズル形状:0.1mmφ、0.6mmピッチ、834ホール、500mm効き幅で両面加工によりシートを作製した後、更に120℃の温度で乾燥し、目付が50g/m2の不織布を得た。不織布の繊維構成を表3に、評価結果を表4に示す。
Claims (4)
- 多葉扁平断面ポリエステル系繊維20~80質量%とセルロース系繊維20~80質量%からなる不織布であって、前記多葉扁平断面ポリエステル系繊維の横断面形状が円周上に6個以上の凸部を有する扁平形状であり、多葉扁平断面ポリエステル系繊維の横断面の最大長さをA、最大幅をB、最大凹凸部において隣り合う凸部の頂点間を結ぶ線の長さをC、そして前記凸部の頂点間を結ぶ線Cから凹部の底点に下ろした垂線の長さをDとするとき、下記式(1)の扁平度と下記式(2)の異形度を同時に満足することを特徴とする不織布。
・扁平度(A/B)=2.0~3.0 ・・・ (1)
・異形度(C/D)=2.0~5.0 ・・・ (2) - 多葉扁平断面ポリエステル系繊維の横断面の最大長さAを対称軸とし、対向する両凸部頂点間線分のうち、横断面最大幅Bを除いて最長となる長さをEとするとき、下記式(3)で定義される凸部比を満足することを特徴とする請求項1記載の不織布。
・凸部比(E/B)=0.6~0.9 ・・・ (3) - 多葉扁平断面ポリエステル系繊維の単繊維繊度が2.0dtex以下であることを特徴とする請求項1または2記載の不織布。
- 請求項1~3のいずれかに記載の不織布からなるワイパー用不織布。
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- 2014-01-16 KR KR1020157021543A patent/KR102093682B1/ko active IP Right Grant
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WO2016027493A1 (ja) * | 2014-08-20 | 2016-02-25 | 東レ株式会社 | 衛生材料用不織布および衛生材料製品 |
JP2019097589A (ja) * | 2017-11-28 | 2019-06-24 | 花王株式会社 | ワイピングシート |
JP2019119963A (ja) * | 2018-01-04 | 2019-07-22 | 日本製紙クレシア株式会社 | 不織布ワイパーおよびその製造方法、製造装置 |
JP7079605B2 (ja) | 2018-01-04 | 2022-06-02 | 日本製紙クレシア株式会社 | 不織布ワイパーおよびその製造方法、製造装置 |
JP2019213686A (ja) * | 2018-06-12 | 2019-12-19 | 花王株式会社 | ワイピングシート |
WO2019239921A1 (ja) * | 2018-06-12 | 2019-12-19 | 花王株式会社 | ワイピングシート |
JP7055068B2 (ja) | 2018-06-12 | 2022-04-15 | 花王株式会社 | ワイピングシート |
JP2020002509A (ja) * | 2018-06-29 | 2020-01-09 | 日本バイリーン株式会社 | 液体化粧料含有シート用不織布 |
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JP2020133059A (ja) * | 2019-02-21 | 2020-08-31 | ユニチカ株式会社 | フェイスマスク用積層不織布 |
Also Published As
Publication number | Publication date |
---|---|
KR102093682B1 (ko) | 2020-03-26 |
JPWO2014132690A1 (ja) | 2017-02-02 |
EP2963168B1 (en) | 2017-09-13 |
EP2963168A4 (en) | 2016-09-21 |
JP6107820B2 (ja) | 2017-04-05 |
CN105074074B (zh) | 2018-01-02 |
KR20150120964A (ko) | 2015-10-28 |
US20150359400A1 (en) | 2015-12-17 |
CN105074074A (zh) | 2015-11-18 |
EP2963168A1 (en) | 2016-01-06 |
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