WO2019130887A1 - Feuille de tissu non-tissé en fibres - Google Patents

Feuille de tissu non-tissé en fibres Download PDF

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Publication number
WO2019130887A1
WO2019130887A1 PCT/JP2018/042262 JP2018042262W WO2019130887A1 WO 2019130887 A1 WO2019130887 A1 WO 2019130887A1 JP 2018042262 W JP2018042262 W JP 2018042262W WO 2019130887 A1 WO2019130887 A1 WO 2019130887A1
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WO
WIPO (PCT)
Prior art keywords
fiber
fibers
sheet
symbol
concave
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PCT/JP2018/042262
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English (en)
Japanese (ja)
Inventor
明寛 木村
耕 出谷
Original Assignee
ユニ・チャーム株式会社
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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 CN201880066446.0A priority Critical patent/CN111212938B/zh
Publication of WO2019130887A1 publication Critical patent/WO2019130887A1/fr

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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
    • D04H1/4374—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 using different kinds of webs, e.g. by layering webs
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D04H1/495—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet for formation of patterns, e.g. drilling or rearrangement

Definitions

  • the present disclosure relates to a fibrous nonwoven sheet formed by interlacing fibers.
  • the fiber non-woven fabric sheet disclosed in Patent Document 1 has a concavo-convex pattern shaped by embossing under heat and pressure, it is excellent in design properties, and even after absorbing a liquid, it has a concavo-convex pattern The shape can be maintained.
  • the user grabs both sides of the sheet by hand and then pulls the sheet to unfold the area of the sheet by disentanglement with the fiber. May be used. In such a case, when the sheet having the concavo-convex pattern formed by embossing is pulled, a part of the concave portion may be broken.
  • an object of the present invention is to provide a non-woven fibrous nonwoven fabric sheet which is good in touch, and which is difficult to be broken even when stretched in the first direction while improving the design.
  • the present invention has a thickness direction, a second direction intersecting the first direction and the first direction, and a first surface and a second surface opposed in the thickness direction, and intermingling constituent fibers.
  • the present invention relates to a formed fibrous nonwoven sheet.
  • the fiber non-woven fabric sheet of the present invention has a concave line formed by fiber entanglement that is concave toward the second surface in the first surface, and the concave line has a second portion extending in the first direction A first portion extending in the second direction, the fiber orientation of the second portion is the second direction, and in the first portion, the number of fibers per unit area along the second direction is The number of fibers per unit area along the second direction in the second portion is smaller.
  • the first portion and the second portion are connected to form a graphic portion. For this reason, the designability of a fiber nonwoven fabric sheet can be improved.
  • the non-woven fiber non-woven sheet comprises a first fiber layer forming the first surface, a second fiber layer forming the second surface, and a hydrophilic property located between the first fiber layer and the second fiber layer. And an intermediate fiber layer containing fibers, and by applying a tensile force in the first direction, the fiber entanglement is unwound in the concave line and the hydrophilic fiber of the intermediate fiber layer is formed on the surface of the first surface. Is exposed. For this reason, when using a fiber nonwoven fabric sheet in a wet state, since a pulp fiber is not exposed outside before applying tensile force, it can suppress that a medical fluid absorbed by pulp fiber volatilizes.
  • the said 1st fiber layer in a fiber nonwoven fabric sheet is mainly comprised from hydrophobic fiber. For this reason, when the fiber non-woven fabric sheet is used in a wet state, since the pulp fiber is surrounded by the hydrophobic first fiber layer and is not exposed to the outside before applying the tensile force, the chemical solution absorbed by the pulp fiber is volatilized It is possible to suppress
  • the water repellent treatment is applied to the surface of the first fiber layer in the fibrous nonwoven fabric sheet. For this reason, when the fiber non-woven fabric sheet is used in a wet state, the pulp fiber is absorbed by the pulp fiber because it is surrounded by the first fiber layer subjected to the water repellent treatment and is not exposed to the outside before applying tensile force. It is possible to suppress the volatilization of the chemical solution.
  • the nonwoven fibrous sheet is for wipes used in a dry or wet state.
  • seat for wipes which has the effect mentioned above can be provided.
  • the fiber non-woven fabric sheet according to the present invention has a concave line formed by fiber entanglement, which is concave toward the second surface in the first surface, so that the designability can be improved and the filmized concave portion is possessed. Since the fiber nonwoven fabric sheet is stretched in the first direction, it is not easily broken. In addition, while the fiber orientation in the second portion is in the second direction, in the first portion, the number of fibers per unit area in the second direction is in the unit area in the second direction in the second portion Less than the number of fibers in For this reason, when the second direction is the wiping direction, the tensile strength of the first portion is smaller than the tensile strength of the second portion.
  • the concave shape of the second portion is less likely to collapse, while the concave shape of the first portion is slightly more likely to collapse. Therefore, the change after the wiping is different depending on the second portion extending in the first direction and the first portion extending in the second direction.
  • a wipes sheet (wipe sheet) 10 shown as an example of the fiber non-woven sheet of the present invention is a bulky and flexible sheet formed by interlacing constituent fibers, which cross each other.
  • the first surface 11 is also referred to as a first wiping surface
  • the second surface 12 is also referred to as a second wiping surface.
  • the wipes sheet 10 has a substantially rectangular shape and is opposed to each other in the first direction X with the first end 10a and the second end 10b extending in the first direction X so as to face each other in the second direction Y. It has an outer peripheral edge composed of a first side edge 10c and a second side edge 10d extending in the second direction Y.
  • agents to be impregnated with the wipes include surfactants, moisturizers, cooling agents such as ethanol for giving a refreshing feeling to the skin, emollients, PH A modifier, a fragrance, an antioxidant, a chelating agent, a plant extract, an anti-browning agent, an anti-inflammatory agent, a skin activator, an astringent and the like can be used alone or in combination.
  • a mixed fiber web of hydrophilic fibers and synthetic fibers can be used for the first fiber layer 21 and the second fiber layer 22.
  • a material of a hydrophilic fiber a water absorption fiber is preferable, More preferably, regenerated fibers, such as a rayon fiber, cotton fiber, etc. can be used.
  • synthetic fibers polyester fibers such as polyethylene terephthalate (PET), polyolefin fibers such as polypropylene (PP), polyethylene (PE) fibers and core-sheath type composite fibers using these fibers are used. be able to.
  • PET polyethylene terephthalate
  • PP polypropylene
  • PE polyethylene
  • core-sheath type composite fibers using these fibers are used. be able to.
  • the material for forming the sheath portion of the composite fiber one having a melting temperature lower than that of the material for forming the core portion is used.
  • Such core-sheath type composite fibers include, for example, combinations of polyethylene and polypropylene, polyethylene and polyester, and polypropylene and polyester.
  • the "synthetic fiber” is one in which the material of the fiber itself is hydrophobic, and also includes one obtained by treating the material with a hydrophilizing agent. As a hydrophilization treatment of the fiber which consists of the material, what attached the hydrophilizing agent (oil agent) to the fiber surface, or what made the fiber contain a hydrophilizing agent (oil agent) is mentioned.
  • first fiber layer 21 and the second fiber layer 22 preferably, fibers in which rayon fibers and PET (polyethylene terephthalate) fibers are mixed at a ratio (mass%) of 20:80 to 80:20 It is formed from the web.
  • rayon fibers which are regenerated fibers in addition to PET fibers which are thermoplastic resin fibers even if the amount of fibers in the concave line 18 which forms the pattern area 40 is small, familiarity with a certain amount of liquid The ease can be secured.
  • PET fiber is a kind of polyester fiber having the largest production amount among synthetic fibers and is excellent in strength, heat resistance, water resistance, acid resistance, alkali resistance, etc., and is suitable as a sheet material of wipes sheet is there.
  • first fiber layer 21 and the second fiber layer 22 are mainly composed of hydrophobic fibers, they can be said to be hydrophobic layers, and the intermediate fiber layer 23 is mainly composed of hydrophilic fibers, so that they are hydrophilic. It can be said that it is a layer.
  • the intermediate fiber layer 23 is formed of hydrophilic fibers such as rayon, cotton and pulp, preferably pulp fibers, and the pulp fibers used are wood pulp in addition to commonly used hardwood and softwood wood fibers. Plant fibers other than fibers, synthetic fibers (preferably those that have been subjected to a hydrophilization treatment), and the like can be combined. Pulp fibers have short fibers, and the number of fibers per unit area is large, and the whiteness of the intermediate fiber layer 23 is relatively high, and the visibility of the pattern area 40 can be enhanced. In addition to pulp fibers, manila hemp, mochi, three mochi, and linter pulp may be mixed.
  • the thickness dimension D1 of the wipes sheet 10 is about 0.3 to 1.0 mm, the weight is about 40 to 60 g / m 2 , and the apparent density is 0.03 to 0.09 g / cm 3 .
  • a thickness measurement device manufactured by PEACOCK, measurement surface ⁇ 44 mm, measurement pressure 3 g / cm 3 ) was used.
  • the fineness of rayon fibers and PET fibers used for the first fiber layer 21 and the second fiber layer 22 is 1.5 to 2.5 dtex, and the fiber length of rayon fibers and PET fibers is 20 to 50 mm, preferably It is 35-45 mm.
  • the fiber length of pulp fibers used for the intermediate fiber layer 23 is 1 to 10 mm, preferably 2 to 5 mm.
  • the average denier of the constituent fibers of the first and second fiber layers 21 and 22 forming the first and second surfaces of the wipes sheet 10 and the average fiber length are made larger than the constituent fibers of the intermediate fiber layer 23 (Fiber unevenness) becomes good, and the difference in the amount of fibers of the concave line 18 constituting the pattern area 40 can be suppressed, and the required visibility and shape stability can be secured.
  • the wipes sheet 10 has a graphic area 40 formed of a concave line 18 which is concave toward the second surface 12 in the first surface 11.
  • the concave line 18 is formed by entanglement of constituent fibers, and has a bottom 18a with a bottom and both sides 18b surrounding the bottom 18a like a wall in the cross section of the concave line 18 shown in FIG. 3 (b) Have.
  • the wipes sheet 10 has a higher fiber density than the low density area 51 located at the bottom 18 a of the concave line 18 and the low density area 51 located at least on both sides of the low density area 51.
  • a high density region 52 and a medium density region 53 having a fiber density higher than the low density region 51 and a fiber density lower than the high density region 52 are provided. That is, the fiber density is the lowest at the bottom 18 a of the concave line 18, and the high density area 52 having the highest fiber density is located at least on portions located on both sides so as to surround the outer peripheral edge of the bottom 18 a.
  • the wipes sheet 10 has such a fiber density difference, and the high density area 52 is positioned so as to surround the bottom 18a of the concave line 18 consisting of the low density area 51, and a contrast due to the density difference is formed.
  • the dense region 52 is visually recognized so as to border the outer peripheral edge of (the bottom 18a of) the concave line 18 due to the density of fibers, and the contour of the concave line 18 can be clearly seen.
  • pulp fibers having high water absorbability are positioned in the intermediate fiber layer 23 interposed between the first fiber layer 21 and the second fiber layer 22. Before the pulp fibers are not exposed to the outside, the chemical solution absorbed by the pulp fibers can be prevented from volatilizing.
  • the bottom 18a of the concave line 18 of the wipes sheet 10, that is, the content (% by weight) of pulp fibers located in the low density area 51 is the content (% by weight) of pulp fibers in the high density area 52 and the medium density area 53 It is smaller than). It can be said that the liquid retention is relatively low because the pulp fiber content in the low density region 51 is relatively low, but the bottom 18 a of the concave line 18 is not a portion directly in contact with the surface to be wiped. The tensile strength is improved due to the dry state compared to the other regions 52 and 53 without requiring high liquid retention, and it is more difficult to break.
  • a portion of the wipes sheet 10 is cut with a cutting tool such as a razor and used as a sample, and the sheet cut surface of the sample is a commercially available scanning electron microscope (for example, Real Surface View Microscope VE-7800 manufactured by Keyence Corporation) The observation was enlarged using the name)).
  • the wipes sheet 10 was cut along a cut line extending in a first direction X orthogonal to the second direction Y (machine direction MD in the manufacturing process) so as to intersect the concave lines 18 of the pattern area 40.
  • the symbol region 40 further has a first symbol portion 41 and a second symbol portion 42 cut, and further has a third symbol portion 43 which is a part of them, and a heart-shaped relatively small fourth symbol portion 44.
  • the first symbol part 41 and the second symbol part 42 have a relatively large area on the first surface 11, and can exhibit a complete design by itself to impress the user It can be said that it is the main symbol (main symbol).
  • the third pattern portion 43 is incomplete and does not exhibit any design property by itself, and the fourth pattern portion 44 is relatively small, and a design which impresses the user by itself
  • the third symbol part 43 and the fourth symbol part 44 can be said to be secondary symbols (sub-symbols) because they do not exhibit the nature.
  • the third symbol portion 43 and the fourth symbol portion 44 are located outside so as to surround the first symbol portion 41 and the second symbol portion 42. Thereby, the design of the wipes sheet 10 can be improved.
  • the first symbol portion 41 and the second symbol portion 42 have independent and closed outlines 41A and 42A, and the outlines 41A and 42A are the outer peripheral edge of the wipes sheet 10 (first end edge 10a, second end edge 10b, an outer peripheral edge defined by the first side edge 10c and the second side edge 10d).
  • the outlines 41A and 42A of the first design portion 41 and the second design portion 42 are independent extends to the outer peripheral edge of the cloth like the ground pattern of the woven fabric and grasps the entire outer shape It is not a continuous pattern that can not be used, but means one that is located away from the outer periphery of the wipes sheet 10 and has completely independent design. Therefore, for example, as in the case of the third design portion 43, those whose outline 43A can not reach the outer periphery of the sheet and can not grasp the overall design do not correspond to independent outlines.
  • the outlines 41A and 42A of the first symbol 41 and the second symbol 42 are closed, the outlines 41A and 42A extend continuously or discontinuously so as to surround the symbols 41B and 42B.
  • Means to The outlines 41A and 42A may have various known shapes such as a circle, an ellipse, a triangle, and a polygon, as long as the outlines 41A and 42A surround the symbols 41B and 42B.
  • the symbol 41B of the first symbol 41 and the symbol 42B of the second symbol 42 are preferably designed to be recognized by the user at first glance.
  • Character logos for promoting a company, various well-known design designs, letters, figures, symbols, and designs having messages by combinations thereof.
  • the characters include alphabetic characters, hiragana characters, katakana characters, kanji characters and characters of foreign languages (eg, Indonesian characters).
  • the fourth design portion 44 does not have to have a design that can be recognized by the user at first glance, and in addition to the illustrated example, it has a star shape, an annular shape resembling a bubble, etc. It may be.
  • the first symbol 41 and the second symbol 42 have required sizes. It is preferable to have an area of, for example, at least 10% or more of the surface area of the wipes sheet 10. On the other hand, since the fourth symbol portion 44 has a relatively small area, it does not function as a main wiping area.
  • a spunlace non-woven fabric formed by hydroentangling treatment is suitably used as the wipes sheet in consideration of bulkiness and touch, and the sheet surface is preferably used to improve its design and wiping properties. It is known to impart a three-dimensional pattern that is entirely raised from the sheet surface by fiber entanglement, and to give an uneven pattern such as a geometric pattern or a lace pattern.
  • the designability is further improved as compared to the printed pattern, and the raised outer peripheral edge can wipe off the dirt.
  • the design itself since the design itself has a raised shape, it may be in sliding contact with the surface to be wiped off at the time of wiping, and the form of the design may be broken due to friction.
  • the wipes sheet has a continuous uneven pattern, it is not completely independent as a design, so that the design can not be strongly impressed to the user.
  • it since it is continuously applied in the machine direction by a fluid at the time of manufacture, it can exhibit its designability only by having a completely independent aspect, for example, high design of characters, characters, symbols, etc. It is not possible to adopt one with gender or message nature.
  • the concave line 18 forming the pattern area 40 is formed by the entanglement of constituent fibers, the whole nonwoven fabric is formed as compared with the case where it is formed by heat embossing. As soft as it has good feel, it can maintain the flexibility unique to spunlace nonwoven fabrics. Further, since the first design portion 41 and the second design portion 42 have independent outlines 41A and 42A, a design having a completely independent aspect can be adopted, and a simple continuous pattern extending to the sheet outer peripheral edge can be adopted. Compared with, it is possible to improve the aesthetic appearance with excellent design.
  • the light When the pattern area 40 itself is raised, the light may be scattered and its outer contour may be blurred, but since it is formed by the concave line 18, the outer contour is made clearer to the user Can be made to understand. Further, at the time of wiping, since the portion other than the concave line 18 is in direct sliding contact with the surface to be wiped, the shape of the concave line 18 is not broken by friction and the pattern area 40 is not largely deformed.
  • the outlines 41A and 42A are closed, and the symbols 41B and 42B are arranged so as to be surrounded by the outlines 41A and 42A. Even when the user pulls or loosens the wipes sheet 10 by deforming the wipes sheet 10 because the designs 41B and 42B are surrounded by the outlines 41A and 42A, the outlines 41A and 42A become the starting point. As the symbol 41B, 42B is deformed, it can maintain its shape. Further, even if the surfaces to be wiped are relatively strongly rubbed at the time of wiping and the shapes of the outlines 41A and 42A are broken, it is possible to suppress the breakage of the shapes of the designs 41B and 42B surrounded by them.
  • a third symbol portion 43 and a fourth symbol portion 44 are located around the first symbol portion 41 and the second symbol portion 42 which are main wiping areas. Therefore, when the wipes sheet 10 is broken down, the third symbol part 43 and the fourth symbol part 44 are deformed as a starting point, and the first symbol part 41 and the second symbol part 42 located at the center are deformed. It can be said that it can be suppressed.
  • the 1st pattern part 41 and the 2nd pattern part 42 have the curved concave line 18 from a viewpoint of wiping off property and an aesthetics.
  • the outlines 41A and 42A are curved, and the patterns 41B and 42B also have curved portions.
  • the first design portion 41 and the second design portion 42 having a curved concave line 18 can give a soft and good impression on the skin, and can be deformed according to the shape of the surface to be wiped.
  • the pattern portions 41 and 42 can be deformed along the narrow and curved grooves of the surface to be wiped to wipe off dirt.
  • the user can easily recognize that the first surface 11 is a wiping surface by positioning the symbol area 40 including the concave line 18 on the first surface 11 side.
  • the first symbol 41 B and the second symbol 42 B are symbols and characters such as notes, and the description is correct when viewed from the first surface 11 side, and the description is incorrect when viewed from the second surface 12 side.
  • the use of the symbols and characters makes it possible to easily recognize that the first surface 11 is a regular wiping surface. Therefore, it can be said that the symbol area 40 also has a function of guiding the user to use the first surface 11 as a wiping surface.
  • the first symbol portion 41 and the second symbol portion 42 of the symbol region 40 can function as a wiping region, but the third symbol portion 43 and the fourth symbol portion 44 are also formed from the concave line 18 It has a certain degree of wiping properties. Therefore, the user can appropriately select and use one of the first to fourth symbol portions 41 to 44 according to the size of the stain at the time of wiping.
  • the concave lines 18 (first line (outside symbol)) forming the outlines 41A and 42A are the concave lines 18 (second line) forming the symbols 41B and 42B. (Inside pattern)) It is wider as a whole. That is, the width dimension with respect to the extension direction of the 1st line which forms outline 41A, 42A is larger than the width dimension with respect to the extension direction of the 2nd line which forms pattern 41B, 42B. Thereby, the design of the wipes sheet 10 can be improved.
  • the relatively wide outlines 41A, 42A allow the user's attention to be drawn to draw out the figures 41B, 42B enclosed by the user.
  • At least one of the plurality of symbol portions 41 to 44 is present in the first direction X at an arbitrarily selected position in the second direction Y. If the user moves the finger in the first direction X if, for example, the finger is in contact with the portion where the symbol portions 41 to 44 do not exist, the portion where any of the symbol portions 41 to 44 is present Therefore, if there is dirt adhering, it is possible to easily change the place where the finger is in contact. In the wipes sheet 10, at least one of the plurality of symbol portions 41 to 44 is present in the second direction Y in an arbitrarily selected portion in the first direction X. For this reason, the change of the part which a finger hits is much easier.
  • the pattern area 40 has a plurality of first to fourth pattern portions 41 to 44 with different designs, thereby dividing the dimensions of the wipes sheet 10 in the first direction X into two equal parts, and It has an asymmetrical design with respect to a second imaginary line Q which bisects the dimension in the direction Y. Therefore, the user can be made to recognize the longitudinal direction and the width direction of the wipes sheet 10.
  • the symbol area 40 may be asymmetric with respect to any one of the first virtual line P and the second virtual line Q.
  • the concave line 18 forming the symbol area 40 has a second portion 82 extending in the first direction X and a first portion 81 extending in the second direction Y.
  • the fiber orientation in the second portion 82 is in the second direction Y. Therefore, when the second direction Y is the wiping direction, the required tensile strength is exhibited, and the concave shape of the concave line 18 is not broken even after the wiping.
  • the first portion 81 the number of fibers oriented in the second direction Y is smaller than that in the second portion 82 per unit area.
  • the second direction Y is the wiping direction
  • the tensile strength of the first portion 81 is smaller than the tensile strength of the second portion 82. Therefore, when the first portion 81 is compared with the second portion 82, the concave shape of the concave line 18 is slightly broken after wiping.
  • the first symbol part 41 and the second symbol part 42 are different in the change mode after wiping by the second portion 82 extending in the first direction X and the first portion 81 extending in the second direction Y.
  • the first part 81 and the second part 82 are connected to form the first to fourth symbol parts 41 to 44, but the first part 81 and the second part 82 are shown. And may not be connected.
  • the fiber orientation is the direction in which the fibers are flowing in a plan view of the wipes sheet 10, and "the fiber orientation of the second portion 82 is the second direction" is the second portion 82.
  • 50% or more has fiber orientation in the range of -45 ° to + 45 ° with respect to the second direction Y Including things.
  • Such fiber orientation can be measured by a method known in the field of this kind, for example, a measurement method according to the fiber orientation test method based on the zero distance tensile strength of TAPPI standard method T481.
  • fiber orientation from the tensile strength ratio (first direction X / second direction Y) of the second portion 82 in the first direction X and the second direction Y using a tensile tester described later May be measured.
  • the first part 81 is a part extending along the first imaginary line P if it is linear, and the second part is the second imaginary line Q if it is linear It is a part extending along.
  • the first portion 81 is a portion that is convex in the first direction X
  • the second portion 82 is a portion convexly bent in the second direction Y.
  • the outer shape of the upper and lower portions (for example, head and body)
  • the design shape can be maintained even after removal from the packaging package after wiping or, for example, frictional resistance occurs in the second direction Y without losing the outline or the dimensional balance between the upper and lower sides.
  • the patterns 41B and 42B of the first and second symbol portions 41 and 42 an ideal combination of figure design and characters may be employed.
  • the figure design and the letters correspond to each other by arranging letters such as “I love YOU!” In the placard.
  • the design can be improved and the user can be motivated to purchase, and the interest of the user, i.e., the infant can be attracted.
  • the symbol area 40 can also be provided with a function as one of the tools capable of creating good communication between the parent and the child through the wipes sheet 10.
  • the wipes sheet 10 has a design with high visibility and excellent uniqueness, so unlike the conventional wipes sheet, the high-quality handkerchief of which the design portion is formed seamlessly. It has an aesthetic appearance like that. Therefore, by realizing differentiation from other products, even if the user is a relatively young woman, it is preferable to carry and use the wipes sheet when going out, without hesitation. Can. Further, when a logo design of a company is adopted as the pattern area 40, the user can be made to recognize the brand effectively, and an excellent advertisement function can be exhibited. Therefore, it can be said that the wipes sheet 10 has both the basic function as wipes and the emotional value which causes the consumer to buy.
  • the portion excluding the concave line 18 is flat, while the concave portion containing the foreign matter is present in the portion where the concave line 18 exists. For this reason, when wiping off on the first surface 11 side, wiping can be performed while containing the foreign matter in the concave line 18.
  • the portion on the opposite side excluding the portion where the concave line 18 exists on the first surface 11 side is flat, while on the opposite side of the portion where the concave line 18 exists on the first surface 11 side
  • Two projecting portions 54 are present along the edge of the concave line 18 and extend along the extending direction of the concave line 18. For this reason, when wiping off on the second surface 12 side, wiping can be performed while scraping foreign substances by the projecting portion 54.
  • the wipes sheet 10 has the first surface 11 and the second surface 12 which have different wiping functions, so that it can cope with various types of dirt (foreign matter).
  • the wipes sheet 10 when used, it may be used by being folded in two with the second surface 12 which is the second wiping surface inside. In such a mode of use, the second surfaces 12 of the folded portions come in contact with each other, and during the wiping operation, the contacting portions may be displaced, and the force may not act sufficiently on the wiping surface .
  • the protruding portions 54 of the high density area 52 located on the second surface 12 side function as a stopper that catches on the opposite surface and prevents the sliding of the folded portions, and it takes during the wiping operation Misalignment of the sheets can be suppressed, and sufficient wiping force can be transmitted to the wiping surface.
  • a plurality of symbol parts 41 and 42 having independent and closed outlines 41A and 42A are present in one wipe sheet 10, but at least in consideration of design and wiping properties, at least It is sufficient that one symbol 41 and 42 exist.
  • the pattern area 40 of a different design for every wipes sheet 10 when a user takes out from the container in which the some wipes sheet 10 was accommodated, what has a different design one after another can be pulled out. Therefore, the user can pop up while having fun.
  • the user holds and pulls the both sides with the hands 8 and 9 in the first direction X before using the wipes sheet 10 to untwist the fibers, thereby removing the wipes sheet. It may be used by expanding the width of ten. In particular, in Southeast Asian countries such as Indonesia, not only wipes sheet 10 but also when using wet tissue or kitchen sheet, the sheet is pulled so as to stretch out to check the sheet strength and expand the sheet area May be used.
  • the wipes sheet 10 as a whole has the fiber orientation in the second direction Y, when it is pulled in the first direction X, the dimension (width dimension) W1 in the first direction X increases while it is pulled in the second direction Y When this happens, the dimension (length dimension) in the second direction Y slightly increases in size, but the amount of change is small compared to the first direction X.
  • the concave line 18 forming the pattern area 40 is formed by fiber interlacing and is soft and easy to deform, the tensile forces F1 and F2 act to cause the fiber entanglement.
  • the line width in the first direction X is expanded in the entire concave line 18, and the outer dimensions of the first to fourth designs 41 to 44 increase.
  • the width dimension W4 of the first portion 81 in the state where the wipes sheet 10 is stretched by 30% in the first direction X in the wet state is the width dimension W3 of the first portion 81 before being pulled. It is 1.5 to 2.5 times.
  • the width dimension W3 of the concave line 18 is expanded to become the width dimension W4 and the dimension is increased, so that the wiping area is increased and the wiping performance is further improved.
  • the concave line is shaped by embossing
  • the tensile forces F1 and F2 act by curing the fiber and partially forming a film
  • the thin bottom portion 18a May be broken without being stretched, but since the concave line 18 is formed by fiber entanglement and has extensibility, the fiber entanglement is broken at the bottom 18a when pulled in the first direction X.
  • the width dimension W3 is gradually expanded, and it is possible to suppress breakage of a part of the bottom portion 18a.
  • the width dimension W3 of the concave line 18 is expanded, so that the outlines of the first to fourth design parts 41 to 44 appear more clearly and the visibility is improved.
  • the width W3 of the concave line 18 is relatively small, and when the external form is difficult to see or the overall external appearance is narrow
  • the width dimension W4 is obtained by pulling the wipes sheet 10 in the first direction X, and the outer shape becomes easy to be clearly recognized, and the design that gave a narrow and distorted impression is It can be expanded and changed to a balanced shape.
  • the wipes sheet 10 Since the second portion 82 is fiber-oriented in the second direction Y, in the first portion 81, the fibers are oriented in the first direction X and the second direction Y, the wipes sheet 10 When the second portion 82 is pulled in the first direction X, the width in the first direction X becomes larger than the width in the second direction Y of the second portion 82. As the width dimension of the first portion 81 in the first direction X is expanded, the outer shapes of the respective symbol portions 41 to 44 become clearer, and the second portion 82 is maintained in its shape. The uniformity of the overall shape of 44 is not greatly disturbed. In addition, when the designs 41B and 42B are character designs or the like in which the second direction Y is up and down, the width can be changed into a rounded shape that the infants and the like prefer.
  • the pulp fibers 28 located in the intermediate fiber layer 23 are exposed to the outside of the hydrophobic first surface 11. Absent.
  • the pulp fibers 28 constitute an absorption layer that absorbs and holds a drug, and thus, by surrounding by the hydrophobic layer and not being exposed to the outside, the outside air can be obtained. It is not exposed and can prevent drying and suppress the volatilization of the drug.
  • the fibers constituting the bottom 18 a of the concave line 18 are untwisted to form the intermediate fiber layer 23.
  • a portion of the pulp fibers 28 located in the first fiber layer 21 passes between the fiber gaps of the fibers constituting the first fiber layer 21 and is exposed to the outside from the first surface 11.
  • the concave lines 18 become wider and the pulp fibers 28 are exposed to the outside, so that the bottom 18 a is covered. When contacted with the wiping surface, it can be hygienically wiped with the drug absorbed by the pulp fibers 28.
  • the surface of the hydrophobic first surface 11 is exposed to pulp fibers and other hydrophilic fibers on the surface of the first surface 11, and the first surface 11 is hydrophobic.
  • the wiping property in the concave line 18 is improved.
  • a water repellent agent such as silicon may be applied to the surface of the first fiber layer 21 forming the first surface 11 to perform water repellent treatment.
  • the smoothness is improved, so when the wet wipes sheet 10 is popped up from the storage container, the next wipes sheet 10 is pulled out together ((1) Can be suppressed.
  • the concave lines 18 are formed on the first surface 11 of the wipes sheet 10, the contact area of the facing surfaces of the wipes sheets 10 in contact with each other in the laminated state is reduced, thereby further suppressing blurring. It is easy to pull out.
  • the wipes sheet 10 has a tensile strength of 0.05 to 1.0 N / 25 mm, preferably 0.15 to 0.5 N / 25 mm at 5% elongation when pulled in the first direction X in a wet state. is there. If the tensile strength in the first direction X is less than 0.05 N / 25 mm, the tensile strength is too low, and when transported in the machine direction in the manufacturing process, part of the bottom portion 18a may break, or When it is pulled in one direction X, there is a possibility that the sheet shape may be broken or a part may be broken because the bottom portion 18a is excessively stretched.
  • the tensile strength in the first direction X exceeds 1.0 N / 25 mm, the tensile strength becomes too high, and the force to such an extent that the user pulls lightly before use makes the bottom 18 a difficult to stretch and the concave line 18
  • the width dimension W4 does not expand.
  • the maximum elongation when the wipes sheet 10 is pulled in the first direction X is 2.0 to 3.0 times, and the maximum elongation when the wipes sheet 10 is drawn in the second direction Y is 1. It is 2 to 1.8 times.
  • the maximum elongation of the wipes sheet 10 is 1.0 times the size of the width dimension W1 before measurement, and the width dimension W1 of the wipes sheet 10 is 100 mm, for example.
  • the width dimension W2 when pulled to break is 200 mm
  • the maximum elongation is 2.0 times.
  • the test is performed so that the first direction X is in the vertical direction between the fixed chuck 91 and the movable chuck 92.
  • the piece 93 was placed, and the maximum tensile strength and the maximum elongation were measured under the conditions of a chuck distance L1 of 100 mm and a tensile speed of 120 m / min.
  • the maximum elongation in the second direction Y was also measured by the same method by arranging the test piece 93 such that the second direction Y was in the vertical direction (vertical direction) of the tester.
  • the movable chuck 92 was moved in a direction away from the fixed chuck 91, and the maximum tensile strength (N / 25 mm) was determined when the distance L1 between chucks was 105 mm (elongation 5%). Further, the tensile strength at the time when the test piece was broken by increasing the distance L1 between chucks was taken as the maximum tensile strength, and the elongation was taken as the maximum elongation (fold). Further, the separation distance R2 of the marks T1 and T2 of the first portion 81 when the distance L1 between chucks is 130 mm (elongation 30%) is measured with a ruler, and the separation distance ratio (R2 / R1) Maximum elongation (fold) was calculated. Even when the wipes sheet is in the dry state, the maximum elongation and the maximum tensile strength in the first direction X and the second direction Y can be determined by the same measurement method.
  • the wipes sheet 10 according to the present invention is a production apparatus similar to the non-woven fabric sheet for wipes usually used in this type of field, for example, a fiber web forming unit, a water supply unit for containing water in the fiber web, fibers
  • a manufacturing apparatus including a water jet unit (step), a dewatering unit (dehydrator), and a drying unit (dryer) for confusing and rearranging can be used.
  • the manufacturing apparatus of the wipes sheet 10 and part of the manufacturing process will be described below.
  • the fiber web formed by laminating fiber aggregates manufactured by various known manufacturing methods is formed.
  • the fiber web may be, for example, a fiber assembly formed by a card method, a fiber assembly formed by an air laid method, a fiber assembly formed by a wet method, a fiber assembly formed by a spun bond method, a meltblown method, etc. Can be stacked and formed.
  • the fiber web is formed by the air laid method corresponding to the intermediate fiber layer 23 between the fiber aggregates formed by the card method corresponding to the first and second fiber layers 21 and 22 of the wipes sheet 10 It has a multi-layered structure in which the stacked fiber assembly is interposed.
  • the fiber web is preferably pre-watered prior to the water jet process to form the entanglement and concave portions corresponding to the concave lines 18 forming the graphic area 40.
  • the fiber gap is filled with water and the fiber density is increased.
  • the fiber jet process it is possible to prevent the fibers from being scattered by the water flow and the fiber density of the fiber web becoming nonuniform, thereby preventing the formation of the fiber web from being disturbed.
  • water may be sprayed by a spray without requiring water pressure to move the fibers.
  • FIG. 8 is a perspective view of the water jet process 100 for forming in the fiber web 101 a concave portion 122 corresponding to the concave line 18 of the pattern area 40.
  • the water jet process 100 includes a suction drum 106 for holding the fiber web transported in the machine direction MD on the outer circumferential surface, and a nozzle plate 107 for jetting water to the fiber web located on the outer circumferential surface of the suction drum 106.
  • the fiber web 101 has a first surface 101 a facing the nozzle plate 107 on the outer peripheral surface of the suction drum 106 and a second surface 101 b opposite the outer peripheral surface of the suction drum 106 located on the opposite side.
  • the suction drum 106 includes a shaped support 106 a having linear protrusions 120.
  • the outer peripheral surface of the shaping support 106a is in the form of a mesh having a plurality of suction tubes 121, and the fiber web 101 is drawn to the shaping support 106a by rotating the shaping support 106a around the axis K1. While being held on the surface, it is transported to a dehydrator (not shown) via a downstream transport means (not shown).
  • the nozzle plate 107 jets water toward the first surface 101 a side of the fiber web 101 held on the outer peripheral surface of the suction drum 106 to cause the fibers to be entangled with each other and is located on the outer peripheral surface of the shaping support 106 a.
  • a concavo-convex pattern is provided on the second surface 101b side of the fiber web 101.
  • the linear convex portion 120 is formed integrally or separately with the outer peripheral surface of the shaped support 106 a.
  • the fiber web 101 further transported in the machine direction MD by the transport belt of the dehydrator is transported to the dryer when it is used as a wipe sheet used in a dry state, while it is in a wet state
  • the liquid supply means for impregnating the liquid containing the medicine and the perfume, with or without the drier After the fiber webs have been subjected to these steps, they are cut into appropriate sizes by a cutting means.
  • the dryer a part of the heat-fusible fibers constituting the fiber web 101 is heat-fused to improve the sheet strength.
  • a plurality of nozzles arranged in the cross direction CD jets water to the first surface 101a of the fiber web 101 held on the outer peripheral surface of the shaped support 106a of the suction drum 106.
  • the fiber web 101 is preliminarily entangled with fibers in a suction drum (not shown) located upstream of the suction drum 106 so that the fibers are entangled by a weak force so that the entire surface is flat.
  • the fiber web 101 is pressed against the linear convex portion 120 located on the outer peripheral surface of the shaping support 106 a by the water flow jetted from the nozzle plate 107 while being sucked from the pipe 121.
  • FIG. 9 (a) is an enlarged view of the fiber web 101 on the linear convex portion 120 before the water flow is jetted in the suction drum 106
  • FIG. 9 (b) is after the fluid is jetted in the suction drum Of the fiber web 101 on the linear convex part 120 of FIG.
  • the linear projections 120 have first, second and third linear projections 120a, 120b, 120b, 120b, 120b, 120b, 120b, 120b, 120b, 120b, 120b, 120b, 120b, 120b and 120b, respectively, having different designs corresponding to the first, second and fourth designs 41, 42 and 44 of the wipes sheet 10. It has 120c. Since the linear convex portion 120 is a portion protruding from the outer peripheral surface of the shaping support 106 a, various designs such as a character and a company logo are adopted for shaping on the fiber web 101 in addition to the illustrated mode. be able to.
  • the linear convex portion 120 is disposed on the entire outer periphery of the shaped support 106 a, and all the manufactured wipes sheets 10 have graphic portions having at least one independent and closed design disposed thereon. It has a pattern.
  • the height of the linear convex portion 120 is designed so that the line width and the height change in the extending direction according to the shaping design.
  • the fibers move to the periphery by the water flow, and the suction tube 121 does not suck it.
  • the fiber density is lower than that of the area.
  • the fibers moved from above the linear convex portion 120 are accumulated and the fiber density is relatively high.
  • the fiber density in the second portion 132 extending further outward from the first portion 131 the fiber density is higher than that of the thin portion 124, and the fiber density is lower than that of the first portion 131.
  • the pulp fibers located in the intermediate fiber layer of the fiber web 101 are shorter in fiber length than the heat-fusion fibers located in the upper and lower layers, and are entangled with each other in the fiber assembly and are moved by water flow It is easy to do. Therefore, in the low density region including the thin portion 124 located on the linear convex portion 120, the pulp fiber moves so as to be blown to the periphery, and the mass of the pulp fiber is compared with the first and second portions 131 and 132. It is lower.
  • the water jet process can form a design pattern formed by entanglement of fibers on the fiber web 101, and the concave portion 122, the first portion 131, and the second portion 132 of the fiber web 101 are respectively wipes It corresponds to the concave line 18 (low density area 51), the high density area 52 and the medium density area 53 of the sheet 10.
  • the fibers are reoriented by the linear convex portion 120 disposed on the outer peripheral surface of the shaped support 106 a of the suction drum 106, and the concave portion 122 is formed on the second surface 101 b side of the fiber web 101. Since the thin portion 124 located in the linear protrusion 120 is not formed with a relatively large opening in the extending direction, the thin portion 124 is surrounded by the linear protrusion 120 during the manufacturing process. The part never falls off.
  • various designs which are independent and closed only by the entanglement of fibers for example, characters, characters, figures, symbols , And combinations thereof can be adopted in various sizes.
  • a spunlace manufacturing method by hydroentanglement has been exemplified, but air, water vapor, etc. can be used besides water as long as the concave line 18 can be formed by fiber entanglement by fluid treatment. It is also possible to employ a fluid-based manufacturing method.
  • the fiber non-woven fabric sheet according to the present invention is not limited to wipes, and hygiene of sanitary napkins, disposable diapers, breast pads, etc. It can also be used as a component material of an article.
  • the first symbol part 41 and the second symbol part 42 of the symbol region 40 have independent and closed outlines 41A, 42A formed by the concave lines 18 due to fiber interlacing, the overall design is flexible. It can be suitably used as a sheet material in contact with the skin of hygiene products.
  • each of the components constituting the wipes sheet 10 is, unless otherwise specified, various known materials commonly used in the field of this kind. It can be used without limitation. Also, as used herein and in the appended claims, the terms “first”, “second”, “third” and “fourth” merely distinguish similar elements, positions, etc. It is used for

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

Abstract

L'invention fournit une feuille de tissu non-tissé en fibres qui tout en présentant un toucher satisfaisant et des propriétés conceptuelles améliorées, est peu susceptible de se déchirer y compris dans le cas où elle est étirée dans une première direction. Une feuille de lingette (10) consistant en la feuille de tissu non-tissé en fibres, possède une direction épaisseur (Z), une première direction (X) ainsi qu'une seconde direction (Y) sécante à la première direction (X), et un premier plan (11) ainsi qu'un second plan (12) s'opposant à la direction épaisseur (Z), et est formée par entrelacement de fibres constitutives. La feuille de tissu non-tissé en fibres (10) possède des lignes en retrait (18) formées par entrelacement de fibres, en retrait sur le premier plan (11) du côté du second plan (12). Les lignes en retrait (18) possèdent une seconde portion (82) se prolongeant dans la première direction (X), et une première portion (81) se prolongeant dans la seconde direction (Y). La direction des fibres de la seconde portion (82) est celle de la seconde direction (Y). Le nombre de fibres par unité de surface dans la seconde direction (Y) dans la première portion (81), est inférieur au nombre de fibres par unité de surface dans la seconde direction (Y) dans la seconde portion (82).
PCT/JP2018/042262 2017-12-28 2018-11-15 Feuille de tissu non-tissé en fibres WO2019130887A1 (fr)

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AU2002364541A1 (en) 2001-12-10 2003-06-23 Polymer Group, Inc. Imaged nonwoven fabrics in hygienic wipe applications
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JP5506520B2 (ja) * 2010-04-16 2014-05-28 ユニ・チャーム株式会社 伸長性繊維と伸縮性繊維とを含む、凹凸を有する不織布、及び当該不織布を製造する方法
JP5961972B2 (ja) * 2011-10-12 2016-08-03 Jnc株式会社 伸縮性嵩高不織布およびその製造方法
WO2016031818A1 (fr) * 2014-08-27 2016-03-03 株式会社クラレ Non-tissé extensible ayant une excellente durabilité de répétition
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AU2015368254B2 (en) * 2014-12-26 2021-06-24 Kuraray Co., Ltd. Self-adhering nonwoven fabric
JP6189394B2 (ja) * 2015-10-16 2017-08-30 ユニ・チャーム株式会社 凹凸パターン付き不織布の製造方法
JP6960719B2 (ja) 2016-03-04 2021-11-05 ユニ・チャーム株式会社 ウェットワイプス用不織布及びその製造方法

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JPH04327255A (ja) * 1991-04-26 1992-11-16 Nippon Filcon Co Ltd 突起を設けた不織布製造用ベルト及び模様を形成した不織布の製造方法
JPH0931823A (ja) * 1995-07-19 1997-02-04 Toyobo Co Ltd 積層不織布
JP2006320728A (ja) * 1999-12-10 2006-11-30 Procter & Gamble Co 巨視的三次元孔なしクリーニングシート、並びにそれを用いたクリーニング用具、クリーニング方法及び製造物品
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JP2017031518A (ja) * 2015-07-30 2017-02-09 ユニチカ株式会社 水流交絡不織布の製造方法

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CN111212938B (zh) 2022-07-26

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