WO2005042824A1 - 極細繊維不織布およびその製造方法 - Google Patents
極細繊維不織布およびその製造方法 Download PDFInfo
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- WO2005042824A1 WO2005042824A1 PCT/JP2004/015929 JP2004015929W WO2005042824A1 WO 2005042824 A1 WO2005042824 A1 WO 2005042824A1 JP 2004015929 W JP2004015929 W JP 2004015929W WO 2005042824 A1 WO2005042824 A1 WO 2005042824A1
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- nonwoven fabric
- fiber
- fineness
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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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
Definitions
- the present invention relates to a microfiber nonwoven fabric made of two types of incompatible resins. More specifically, a splittable composite fiber nonwoven fabric which is excellent in wiping properties, water retention or water repellency, and excellent in flexibility and can be produced at low cost, and a wiper, an absorbent article, a sanitary material using the same and its production About the method.
- Nonwoven fabrics are widely used in clothing, disposable items, personal hygiene products, industrial materials, and the like.
- ultrafine fiber nonwoven fabrics have been conventionally applied in order to obtain required performances such as excellent flexibility, tactile sensation, and wiping properties.
- split type composite fibers are produced using two types of mutually incompatible resins, and physical force is applied to the composite fibers. It is known as a known technique that a so-called splitting is performed to obtain ultrafine fibers, and after obtaining the ultrafine fibers, the fibers are split and simultaneously entangled by a hydroentangling treatment or a needle punching process to obtain an ultrafine fiber nonwoven fabric. (See Patent Document 1, Patent Document 2, Patent Document 3).
- these methods cannot apply an impact of one dollar or a high pressure water stream to all parts of the splittable composite fiber, and the splitting degree is low and the strength cannot be obtained. In other words, it is not partly split!
- a method of obtaining a microfiber nonwoven fabric by a so-called elongation treatment is also known.
- the stretching process described in Patent Document 4 involves introducing a nonwoven fabric sheet between a supply roll rotating at a constant peripheral speed and a stretching roll rotating at a higher peripheral speed than the supply roll. This is a method in which the nonwoven fabric sheet is stretched between the sheet and the stretching roll. This method is preferable in that the production process is simple.
- the resulting product will be a mixture of these resins.
- a splittable composite fiber of a polyolefin resin having a lipophilic fiber surface and a polyester resin having a relatively hydrophilic property is obtained. Since it has hydrophilicity and lipophilicity, it is expected to be preferable because the wiping property is improved.
- Patent Document 5 discloses that at least one kind of splittable conjugate fiber is kneaded with a hydrophilizing agent, and at the same time, the outer peripheral surface is made hydrophilic.
- a hydrophilic non-woven fabric is described in which the applied oil agent is adhered, and the non-woven fabric is formed under conditions such that the non-woven fabric is not subjected to an elongation force that does not cause division between its constituent fibers.
- the hydrophilic agent and the hydrophilicity-imparting agent are used for at least one kind of resin constituting the splittable conjugate fiber, the hydrophilicity is maintained.
- the expected effect cannot be obtained in terms of water retention.
- Patent Document 1 JP-A-58-169557
- Patent Document 2 JP-A-60-71752
- Patent Document 3 JP-A-60-71753
- Patent Document 4 JP-A-9-310259
- Patent Document 5 JP-A-2004-100084
- An object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to excel in flexibility, wiping properties, and dust collecting properties.
- Another object of the present invention is to provide a method for producing a microfiber nonwoven fabric which can be produced at low cost, and a microfiber nonwoven fabric obtained thereby, and a wiper and a sanitary material using the same. Means for solving the problem
- the inventors of the present invention have conducted intensive studies to solve the above-described problems, and as a result, a plurality of molten incompatible resins have been discharged from a spinneret having a composite spinning nozzle for splittable composite fibers, and air has been discharged.
- the filaments drawn and spun at the same time as cooling are deposited on the collection belt, collected after hot embossing, combined, and then subjected to an extension force to provide flexibility, wiping, and dust collection.
- the present inventors have found that it is possible to obtain a nonwoven fabric which is excellent in quality and can be produced at low cost.
- the fibers of the ultrafine fiber nonwoven fabric of the present invention are characterized in that the standard deviation of the number of segments forming the filament cross section of the ultrafine fibers is 6 or less.
- the at least two different resins used in the present invention are a polyolefin-based polymer and a polyester-based polymer.
- the polyolefin-based polymer used in the present invention is a polypropylene-based polymer
- the polyester-based polymer is a polylactic acid-based polymer.
- the fiber of the nonwoven fabric of the composite fiber used in the present invention is a composite fiber composed of at least two different resins and is produced by applying an elongation force. One.
- the stretching force used in the present invention is determined by fixing the composite fiber nonwoven fabric used in the present invention at a point separated by a distance of 0.1 to 100 mm (millimeter), and stretching the nonwoven fabric uniformly during the fixing. It is characterized by being free from caro.
- At least one resin composed of at least two different resins is hydrophilic.
- a nonwoven fabric having a fineness of 0.01-2. Od (denier) containing a compound.
- the elongation force of the present invention is applied by gear drawing.
- the gear stretching used in the present invention is expressed by a gear depth (H) mm and a gear pitch (W) mm, and the maximum elongation obtained in a test according to the strip method described in L1096. It is one of preferred embodiments that the relationship with (E)% satisfies the following mathematical formula.
- the present invention provides a wiper including the ultrafine fiber nonwoven fabric of the present invention.
- the present invention provides a sanitary material including the ultrafine fiber nonwoven fabric of the present invention.
- the splittable conjugate fiber can be split at a high level and uniformly by the method of the present invention, an ultrafine fiber nonwoven fabric which is excellent in flexibility, wiping property and dust collecting property and can be produced at low cost is provided. can get.
- the properties expected in each case are exhibited by using the present invention.
- a product having desired properties can be obtained by selecting a combination of splittable fibers.
- FIG. 1 is a schematic view showing an example of a cross section of a splittable conjugate fiber filament according to the present invention.
- FIG. 2 is a schematic view showing one embodiment of a uniform stretching process for splitting the splittable conjugate fiber according to the present invention.
- FIG. 3 is a schematic diagram showing measurement points of a division ratio and a standard deviation of a split type composite fiber nonwoven fabric subjected to gear stretching obtained in an example.
- FIG. 4 is a schematic view showing measurement points of a division ratio and a standard deviation of a split type composite fiber nonwoven fabric subjected to gear stretching obtained in a comparative example.
- FIG. 5 is an electron micrograph of the ultrafine fiber nonwoven fabric of the present invention obtained in an example.
- FIG. 6 is an electron micrograph showing a fiber cross section of the ultrafine fiber nonwoven fabric according to the present invention.
- FIG. 7 is an electron micrograph of the ultrafine fiber nonwoven fabric obtained in Comparative Example.
- the “split-type conjugate fiber” as used in the present invention refers to a conjugate long fiber discharged from a spinneret having a conjugate spinning nozzle configured to form a cross-sectional structure in a radial, parallel or parallel manner.
- the resin used as the material of the splittable conjugate fiber of the present invention is a combination of two or more different resins, and when split into a splittable conjugate fiber, can be easily split by mechanical impact or the like. ⁇ means a combination of fats.
- thermoplastic resin-elastomer such as a polyolefin-based polymer, a polyester-based polymer, a polyamide-based polymer, a polyurethane-based polymer, and polycarbonate is used.
- resin combinations selected from polyesters and polyolefins Is preferred.
- polystyrene resins examples include polyolefin resins such as polyethylene and polypropylene, and copolymers with X-olefin such as polyolefin elastomers, polystyrene resins, and polystyrene elastomers.
- polyester resin used in the present invention examples include polyethylene terephthalate, polyethylene terephthalate copolymer, polybutylene terephthalate, polybutylene terephthalate copolymer, polydalicholic acid, glycolic acid copolymer, and polylactic acid. And a lactic acid copolymer.
- the polyamide resin used in the present invention includes 6,6-nylon, 6,10-nylon,
- Nylon, 1,1-nylon, 1,2-nylon, 4-nylon, 4,6-nylon and copolymers containing these as main components can be exemplified.
- the splittable conjugate fiber comprising two or more different resins
- one having a cross section as shown in FIGS. 1 (a) to 1 (d) is preferable.
- two types of resin parts are both exposed on the surface of the filament, and in the cross section of the filament, one resin part is partitioned into a shape that can be split by the other resin part. Things.
- the example of the cross section in FIG. 1 is a typical example, and without departing from the object of the present invention, a splittable conjugate fiber having a cross section other than the above may be produced by appropriately selecting a spinneret. Can be done.
- the ratio between the resin portion A and the resin portion B is preferably equal, but is not limited thereto.
- A: B (weight ratio) is preferably 90-10: 10-90, and more preferably 70-30: 30-70.
- the resin used for the splittable conjugate fiber in the present invention is appropriately selected depending on the application. In particular, when it is used for paper mums, wipers, etc., it is necessary to suppress the generation of fluff.
- at least a part of the fiber surface is made of a resin of a resin part formed continuously in the length direction.
- the polyolefin polymer used is preferably a polypropylene polymer.
- the splitting conjugate fiber spinning die used for the production has two flow paths, so the difference in melting point between the two types of resins is low.
- the temperature distribution in the die becomes uneven, and there is a concern that the low melting point resin may be thermally decomposed.
- filaments may be fused due to a delay in crystallization during the cooling process, which may make molding difficult.
- the difference between the melting points of the two resins is usually from 0 to 200 ° C, preferably from 0 to 100 ° C, most preferably from 0 to 50 ° C. Therefore, when a polypropylene polymer is used for one resin, a polylactic acid polymer having a melting point close to that of the polypropylene polymer is preferable for the other resin.
- the polypropylene polymer preferably used in the present invention is a propylene homopolymer or a copolymer containing propylene as a main component and containing at least one other ⁇ -olefin.
- Other alpha-olefins include ethylene, 1-butene, 1-pentene, 1-hexene, 1-otene, 4-methyl-1-pentene and the like having 2 to 20 carbon atoms, preferably 2 to 8 carbon atoms. Can be mentioned. These homopolymers or copolymers can be used alone or in combination of two or more.
- the MFR of the polypropylene-based polymer is usually 11OOOgZlO, preferably 5-200gZlO, more preferably 10-120gZlO.
- the MFR of the polypropylene polymer is measured at 230 ° C and a load of 2.16 kg based on ASTM D1238.
- the ratio MwZMn of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the polypropylene polymer is usually 1.5 to 5.0, furthermore, the spinnability is good, and the fiber strength is particularly excellent. From the viewpoint of obtaining a conjugate fiber, 1.5 to 3.0 is preferable.
- good spinnability means that the yarn does not break at the time of discharge from the spinning nozzle and during stretching, and no filament fusion occurs.
- Mw and Mn can be measured by a known method by GPC (gel permeation chromatography).
- the polylactic acid-based polymer preferably used in the present invention includes poly (D-lactic acid), poly (L-lactic acid), a copolymer of D-lactic acid and L-lactic acid, a copolymer of D-lactic acid and hydroxycarboxylic acid, L-lactic acid And a copolymer of hydroxycarboxylic acid, selected polymers, or a blend thereof.
- Hydroxycarboxylic acids include glycolic acid , Hydroxybutyric acid, hydroxyvaleric acid, hydroxypentanoic acid, hydroxycaproic acid, hydroxyheptanoic acid, hydroxyoctanoic acid and the like.
- a crystal nucleating agent may be added to the polylactic acid-based polymer, if necessary, as long as the effects of the present invention are not impaired.
- the crystal nucleating agent include a biodegradable polymer having a nucleating agent effect such as polybutylene succinate, talc, boron nitride, calcium carbonate, titanium oxide and the like.
- the melting point of the polylactic acid-based polymer is as follows. The temperature is preferably 100 ° C. or more, more preferably 150 ° C. to 180 ° C.
- a polylactic acid-based polymer having a weight average molecular weight (Mw) of 100,000-200, OOOgZmol is preferable in that a conjugate fiber having good spinnability can be obtained.
- the resin forming the resin portion is a water-repellent resin
- a water-repellent resin for example, fatty acid glyceride, alkoxylated alkyl Nonionic surfactants such as phenol, polyoxyalkylene fatty acid ester, alkyl polyoxyethylene alcohol, fatty acid amide, fatty acid salt, alkyl sulfate ester salt, alkyl benzene sulfonate, alkyl naphthalene sulfonate, dialkyl sulfococ Group of surfactants such as acid salts and special ionics, polyethylene glycol, vinyl alcohol
- splittable conjugate fiber composed of two types of incompatible resins, polyester resin and polyolefin resin
- a component As an example of a component,
- R is a linear or branched alkyl group having 22 to 40 carbon atoms, and n is an integer of 2 to 10.
- the amount of these added is preferably 0.5 to 10% by weight, more preferably 2 to 7% by weight in one resin part.
- the incompatible resin used in the present invention can contain additives imparting other functions within a range that achieves the object of the present invention, and is appropriately selected and blended according to the application. be able to.
- the additives include conventionally known heat stabilizers, weather stabilizers, various stabilizers, antistatic agents, slip agents, antiblocking agents, antifogging agents, lubricants, dyes, pigments, natural oils, synthetic oils, Wax and the like.
- the stabilizer examples include an anti-aging agent such as 2,6-di-tert-butyl-4-methylphenol (BHT); tetrakis [methylene 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ] Methane, J3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid alkyl ester, 2,2'-oxamidobis [ethyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl)] propionate
- BHT 2,6-di-tert-butyl-4-methylphenol
- tetrakis methylene 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate
- Methane J3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid alkyl ester
- 2,2'-oxamidobis ethyl
- Phenolic antioxidants such as 1010 (hindered phenolic antioxidant: trade name); fatty acid metal salts such as zinc stearate, calcium stearate, calcium 1,2-hydroxystearate; glycerin monostearate; Polyhydric alcohol fatty acid esters such as glycerin distearate, pentaerythritol olemonostearate, pentaerythritol distearate and pentaerythritol tristearate can be exemplified. Also, these can be used in combination.
- the polypropylene-based polymer and the polylactic acid-based polymer can be mixed with other optional components used as necessary by using a known method.
- the spun bond method is preferable because a high strength resin having good productivity can be obtained.
- a spunbond method As a method for producing the ultrafine fiber nonwoven fabric of the present invention, a spunbond method will be described as an example. As shown in Fig. 1 (a)-Fig. 1 (d), the melts of the two types of incompatible resins that make up the splittable conjugate fiber are formed in a radial, parallel or parallel sectional structure A long fiber that is discharged from a spinneret having a composite spinning nozzle and drawn to a predetermined fineness by drawing.
- the fibers are collected on a moving collection belt as it is and deposited to a predetermined thickness.
- hot embossing is performed by heat fusion with a hot embossing roll.
- the embossing area ratio of the embossing roll is a force that can be appropriately determined. Usually, 5 to 30% is preferable.
- the fineness of the splittable conjugate fiber after spinning is usually preferably 6 deniers or less.
- a denier of 6 deniers or less is preferable because fineness after splitting treatment by, for example, stretching can be reduced, and excellent wiping properties and flexibility are obtained.
- the basis weight of the splittable conjugate fiber nonwoven fabric of the present invention is preferably 3 to 200 gZm 2, more preferably 10 to 150 gZm 2 .
- the obtained splittable composite fiber nonwoven fabric can be split by applying an elongation force.
- the elongation force is applied so that the composite fiber nonwoven fabric is fixed at two points separated by a certain distance, and is stretched uniformly in the sense of fixing.
- the stretching force is applied in this way, the composite fiber nonwoven fabric is split more highly and uniformly.
- the distance between the fixings is usually 0.1 to 100 mm, preferably (0.1) to (50) mm, and more preferably (0.1) to (10) mm. Whether the film can be stretched uniformly depends on the distance between the fixings, and if the distance between the fixings is too short, the stretching may be insufficient.If the distance between the fixings is too short, variations in the basis weight included in the nonwoven fabric may occur.
- the standard deviation is preferably 6 or less, and more preferably 5 or less.
- One of the features of the stretching force used in the present invention is that the stretching process is performed by uniformly applying the stretching force to the entire nonwoven fabric. Apply stretching force uniformly to the entire nonwoven fabric
- various stretching methods can be used as long as the object power of the present invention is not deviated, and for example, a gear stretching process using a gear stretching device as shown in FIG. 2 can be mentioned.
- a stretching process in which a roll having a large number of convex projections and a roll having a large number of depressions in which the projections can be accommodated can be given.
- the splitting ratio of the splittable conjugate fiber after splitting is preferably 30% or more.
- the content is 60% or more, flexibility, wiping property, and dust collecting property are also preferable.
- the splitting state and splitting ratio of the split type conjugate fiber can be adjusted by changing the conditions such as the line speed, the gear depth and the gear pitch when passing through the gear drawing device, and by performing drawing.
- the fineness of the ultrafine fiber nonwoven fabric produced by the method of the present invention is usually 0.01-2. Od (denier), preferably 0.01-1.2d (denier).
- Gear stretching conditions for obtaining sufficient flexibility, wiping properties, and dust collecting properties include a stretching ratio represented by a gear depth (H) mm and a gear pitch (W) mm, and a strip described in L-1096.
- the stretching condition changes depending on the relationship between the desired strength and lint-free property in which the relationship with the maximum elongation (E)% preferably satisfies the following formula.
- the split fibers developed by the drawing process in the present invention are not substantially three-dimensionally entangled with each other. The reason for this is that the stretching force is simply applied to the composite continuous single yarn,
- the composite continuous single yarn is randomly generated by the high-pressure liquid flow.
- the composite continuous single yarn and split fiber are substantially three-dimensionally entangled with each other.
- the interval between split fibers is substantially It is not three-dimensionally entangled, and therefore, it is possible to prevent a decrease in the flexibility of the nonwoven fabric due to the entanglement.
- substantially three-dimensional entanglement refers to tight entanglement that occurs when treated with a needle punch or a high-pressure columnar flow, and entanglement due to fiber bending or the like is substantially entangled. Don't say that.
- one of the two different resins may contain a hydrophilic compound.
- the fineness of the split fiber containing the hydrophilic compound is usually 0.01 to 2.0 denier, preferably 0.01 to 1.2 denier. Water retention and flexibility are improved when the fineness is strong.
- the ultrafine fiber nonwoven fabric of the present invention can have various properties depending on the combination of two types of resins during spinning of the conjugate fiber.
- a microfiber nonwoven fabric obtained from a combination of polyolefin and polyester is flexible and has good wiping performance for both water and oil.
- a hydrophilic agent is added to polyolefin, which is more hydrophobic than polyester, an ultrafine nonwoven fabric having water retention as well as flexibility can be obtained.
- a microfiber nonwoven fabric using different types of polyolefins they have water repellency in addition to flexibility.
- the ultrafine fiber nonwoven fabric of the present invention may be a mixed nonwoven fabric with other fibers depending on the use.
- the obtained splittable composite fiber nonwoven fabric may be laminated on another nonwoven fabric, film, or the like according to desired performance to form a nonwoven fabric laminate having at least one splittable composite fiber nonwoven fabric. it can. Thereby, it can be applied to more applications.
- the obtained splittable composite fiber nonwoven fabric is embedded in epoxy resin, and then cut with a microtome in the next step. Cut to obtain a sample piece. This was observed with an electron microscope, and the division ratio was calculated by the following equation from the obtained cross-sectional image. This was observed for 30 fibers, and the average value was defined as the splitting rate of the splittable composite fiber nonwoven fabric.
- the total number of segments refers to the total number of the segments forming the filament cross section of the splittable conjugate fiber.
- the total number of segments is eight.
- the division ratio was measured at three places of the divisional nonwoven fabric obtained in each experiment. With respect to the split-type composite fiber nonwoven fabric subjected to the gear stretching, the measurement was performed at three locations (A, B, and C in the figure) shown in FIG. Split-type conjugate fiber subjected to split tensile drawing
- the nonwoven fabric was measured at three locations (A, B, and C) in the stretching direction at the same intervals as in FIG. 6 so as to be compatible with the gear stretched.
- the touch was evaluated by 10 evaluators.
- the evaluation results are shown based on the following criteria.
- ⁇ In the case of 9 to 7 out of 10 human powers that felt good, ⁇ : Human power felt good to touch 6 out of 10 people,
- the obtained splittable composite fiber nonwoven fabric is cut into a size of 50 mm x 200 mm to obtain a test piece.
- the weight W of this test piece was measured and the oil (MAGMAX SL, manufactured by Yellow Hat Co., Ltd.) was used.
- Oil retention rate [%] ⁇ (W—W) / W ⁇ X100
- the obtained splittable composite fiber nonwoven fabric is embedded in an epoxy resin, and then cut with a microtome to obtain a sample piece. Next, observation with an electron microscope, ten undivided filaments were selected from the obtained cross-sectional images, their cross-sectional areas were calculated, the fineness of the undivided filaments was determined from their average values, and the following ratio was calculated using the division ratio. The fineness of the splittable conjugate fiber was calculated by the formula.
- Fineness of splittable conjugate fiber fineness of undivided filament Z (total number of segments X splitting ratio Zio
- Wipe rate [%] ⁇ (] _. 5-w) / l. 5 ⁇ X 100
- a commercially available double-sided tape (-Nystack NWBB15, manufactured by Chiban Co., Ltd.) is cut into 15 mm ⁇ 200 mm, and the tape weight W [g] is measured. Then, apply this tape on a non-woven fabric, and place a weight of 1.25 kg and a size of 300 mm x 95 mm on it. After holding for 60 seconds, the tape was peeled off, the tape weight W '[g] was measured, the amount of falling off was calculated by the following formula, and this was repeated three times, and the average value was evaluated. The larger the shedding amount, the less lint-free.
- split-type composite fibers having a weight ratio of the first resin to the second resin of 50Z50 are deposited on a collection belt, and then heated with an embossing roll.
- pressure treatment embossing area percentage of 18%, embossing temperature 100 ° C
- basis weight force 0 g / m 2
- the fineness of the structure textiles unresolved filament fineness 0. 88d, pursuant to the strip method described in L 1096
- a splittable composite fiber nonwoven fabric with a maximum elongation of 70% was produced.
- the obtained nonwoven fabric was passed through a gear stretching machine (gear pitch: 5mm, distance between fixed points of the nonwoven fabric web: 2.5mm) shown in Fig. 2 and stretched at a transverse stretching ratio of 56%.
- a fibrous nonwoven fabric was produced.
- the division rate, the standard deviation, the feeling, the tensile strength, the lint-free property, the wiping rate, and the oil retention rate were measured and evaluated. Table 1 shows the results of the evaluation.
- Example 1 The nonwoven fabric obtained in Example 1 was passed through a gear stretching machine with a gear pitch of 2.5 mm and stretched at a transverse stretching ratio of 160% (gear depth 3.Omm) to produce an ultrafine fiber nonwoven fabric with a fineness of 0.25 d. did. Table 1 shows the evaluation results of the obtained nonwoven fabric.
- a splittable composite fiber nonwoven fabric was produced. Pull the obtained nonwoven fabric Using a tester, the sheet is stretched at a draw ratio of 56% in the machine direction (MD) with a width of 2.5 mm in the transverse direction (CD), with a chuck of 100 mm (distance between the fixing points of the nonwoven web) and a split type composite fiber fineness of 0 mm. A 50 d split-type composite fiber nonwoven fabric was prepared. Table 1 shows the results of evaluating the obtained nonwoven fabric.
- Example 2 In the same manner as in Example 1, a splittable composite fiber nonwoven fabric was produced. Using a tensile tester, the obtained nonwoven fabric was subjected to a stretching treatment at a stretch ratio of 160% in a flow direction (MD) with a width of 2.5 mm in a transverse direction (CD) and a width of 2.5 mm in a transverse direction (CD) using a tensile tester. However, since the nonwoven fabric was broken during the stretching, it was a force that could not be evaluated.
- MD flow direction
- CD transverse direction
- CD transverse direction
- the first resin and the second resin were separately melted by an extruder and used for a splittable composite fiber spinning die having a total cross-sectional shape as shown in Fig. 1 (a) with 16 segments.
- the splittable conjugate fiber having a weight ratio of the resin of 50/50 is deposited on the collecting belt, and then heated and pressed by an embossing roll (emboss area ratio 18%, enameled area).
- a boss temperature of 100 ° C) was performed to produce a splittable composite fiber nonwoven fabric having a basis weight of 0 gZm2 and a fineness of constituent fibers of 0.75 d.
- the resulting nonwoven fabric was evaluated by measuring the splitting ratio (measured immediately after spinning), water absorption, softness, texture, tensile strength, and lint-free property. Table 2 shows the results
- the nonwoven fabric obtained in Experimental Example 1 was stretched with a gear stretching machine having a gear pitch of 2.5 mm at a gear depth of 1.5 mm and a stretching ratio of 56% to produce a splittable composite fiber nonwoven fabric having a fineness of 0.4 d.
- Table 2 shows the results of evaluation of the obtained nonwoven fabric.
- the nonwoven fabric obtained in Experimental Example 1 was stretched by a gear stretching machine with a gear pitch of 2.5 mm at a gear depth of 2.5 mm and a stretching ratio of 124% to produce a splittable composite fiber nonwoven fabric with a fineness of 0.32 d. .
- Table 2 shows the evaluation results of the obtained nonwoven fabric.
- the nonwoven fabric obtained in Experimental Example 1 was stretched by a gear stretching machine with a gear pitch of 2.5 mm at a gear depth of 3.Om m and a stretching ratio of 160% to produce a split-type composite fiber nonwoven fabric with a fineness of 0.27 denier.
- Table 2 shows the evaluation results of the obtained nonwoven fabric.
- the first resin was polylactic acid having a weight average molecular weight Mw: 133400 (Mitsui Iridaku Co., Ltd., trade name: LACEA, melting point 165 ° C).
- the split type composite fibers are deposited on the collection belt, and then heated with an embossing roll under a heated caloric pressure (18% embossing area ratio, 100 ° C embossing temperature), the basis weight force is 0 gZm2, and the fineness of the constituent fibers is 0.88 d.
- the obtained nonwoven fabric was stretched at a stretch ratio of 56% in the same manner as in Experimental Example 2 using a tensile tester to produce a split composite fiber nonwoven fabric having a fineness of 0.64 d. Table 2 shows the evaluation results of the obtained nonwoven fabric.
- the first resin was polylactic acid having a weight average molecular weight Mw: 133 400 (Mitsui Iridaku Co., Ltd., trade name: LACEA, melting point 165 ° C).
- a split type composite fiber nonwoven fabric with a basis weight of 0 gZm2 and a fineness of constituent fibers of 0.88 d was produced by heating calorie pressure treatment with a roll (emboss area ratio 18%, emboss temperature 100 ° C). About the obtained nonwoven fabric, the division
- melt-spinning is performed, and monocomponent fibers are deposited on a collecting belt.
- this was heated and pressed with an emboss roll (emboss area ratio 18%, emboss temperature 130 ° C) to produce a nonwoven fabric having a basis weight of 0 gZm2 and a fineness of constituent fibers of 2.76d.
- the obtained nonwoven fabric was evaluated by measuring its water absorption, rigidity, texture, and tensile strength. Table 2 shows the results.
- Alkyl polyoxyethylene alcohol (CH CH (CH CH) CH CH (OCH CH
- melt spinning is performed by the melt blow method, and the monocomponent fibers are deposited on the collection belt, and the basis weight is S40gZm2 and the fineness of the constituent fibers is 0.03d.
- a fabric was made.
- the obtained nonwoven fabric was evaluated by measuring water absorption, rigidity, texture, tensile strength, and lint-free property. Table 2 shows the results.
- the microfiber nonwoven fabric of the present invention includes medical and industrial wipers, masks, surgical gowns, wrapping cloths, filters, absorbent articles, surface materials of sanitary materials such as disposable diapers and napkins, bed sheets, pillow covers and the like. It can be suitably used for bedding products, cotton in sleeping bags and bedding, cotton cloth for carpets and artificial leather, fertilizer absorbers for horticulture and nurseries, reinforcing fibers for building structures, liquid transport membranes, battery separators, and the like.
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Cited By (15)
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JP2007191817A (ja) * | 2006-01-18 | 2007-08-02 | Nippon Ester Co Ltd | 分割型複合短繊維及び短繊維不織布 |
JP2007247072A (ja) * | 2006-03-13 | 2007-09-27 | Mitsui Chemicals Inc | 複合繊維、複合繊維からなる不織布、分割繊維不織布および用途。 |
JP2008075231A (ja) * | 2006-09-25 | 2008-04-03 | Mitsui Chemicals Inc | 分割型複合繊維からなる不織布 |
WO2008117805A1 (ja) | 2007-03-26 | 2008-10-02 | Mitsui Chemicals, Inc. | 混合長繊維不織布およびその製造方法 |
JP2009022747A (ja) * | 2007-06-21 | 2009-02-05 | Unitika Ltd | 衛生用品 |
JP2009084736A (ja) * | 2007-09-28 | 2009-04-23 | Daiwabo Co Ltd | ポリカーボネート繊維の製造方法 |
JPWO2007105503A1 (ja) * | 2006-03-13 | 2009-07-30 | 三井化学株式会社 | リントフリー性に優れる分割型複合長繊維不織布および製造方法 |
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US9205006B2 (en) | 2013-03-15 | 2015-12-08 | The Procter & Gamble Company | Absorbent articles with nonwoven substrates having fibrils |
JP2016106185A (ja) * | 2015-12-21 | 2016-06-16 | ユニ・チャーム株式会社 | 不織布、及び上記不織布を含む吸収性物品、並びに上記不織布の形成方法 |
US9504610B2 (en) | 2013-03-15 | 2016-11-29 | The Procter & Gamble Company | Methods for forming absorbent articles with nonwoven substrates |
JP2017075440A (ja) * | 2016-11-30 | 2017-04-20 | ユニ・チャーム株式会社 | 不織布、及び上記不織布を含む吸収性物品、並びに上記不織布の形成方法 |
US11090407B2 (en) | 2017-03-09 | 2021-08-17 | The Procter & Gamble Company | Thermoplastic polymeric materials with heat activatable compositions |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05186946A (ja) * | 1991-12-30 | 1993-07-27 | Unitika Ltd | 極細繊維よりなる不織布の製造方法 |
JPH09310259A (ja) * | 1996-05-23 | 1997-12-02 | Chisso Corp | 極細繊維不織布 |
JPH10121360A (ja) * | 1996-10-17 | 1998-05-12 | Japan Vilene Co Ltd | 極細繊維不織布の製造方法 |
JP2003073967A (ja) * | 2001-08-31 | 2003-03-12 | Mitsui Chemicals Inc | 柔軟性不織布及びその製造方法 |
-
2004
- 2004-10-27 JP JP2005515135A patent/JPWO2005042824A1/ja not_active Withdrawn
- 2004-10-27 WO PCT/JP2004/015929 patent/WO2005042824A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05186946A (ja) * | 1991-12-30 | 1993-07-27 | Unitika Ltd | 極細繊維よりなる不織布の製造方法 |
JPH09310259A (ja) * | 1996-05-23 | 1997-12-02 | Chisso Corp | 極細繊維不織布 |
JPH10121360A (ja) * | 1996-10-17 | 1998-05-12 | Japan Vilene Co Ltd | 極細繊維不織布の製造方法 |
JP2003073967A (ja) * | 2001-08-31 | 2003-03-12 | Mitsui Chemicals Inc | 柔軟性不織布及びその製造方法 |
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JP2012067426A (ja) * | 2010-09-27 | 2012-04-05 | Uni Charm Corp | 不織布、及び上記不織布を含む吸収性物品、並びに上記不織布の形成方法 |
CN103124813A (zh) * | 2010-09-27 | 2013-05-29 | 尤妮佳股份有限公司 | 无纺布、包含该无纺布的吸收性制品以及形成该无纺布的方法 |
US9044360B2 (en) | 2010-09-27 | 2015-06-02 | Unicharm Corporation | Nonwoven fabric, absorbent article comprising the same, and method of forming the same |
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US11839531B2 (en) | 2014-09-10 | 2023-12-12 | The Procter And Gamble Company | Nonwoven webs with hydrophobic and hydrophilic layers |
JP2016106185A (ja) * | 2015-12-21 | 2016-06-16 | ユニ・チャーム株式会社 | 不織布、及び上記不織布を含む吸収性物品、並びに上記不織布の形成方法 |
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