EP0311860B1 - Non-tissé fabriqué à partir de filaments soudables à chaud - Google Patents

Non-tissé fabriqué à partir de filaments soudables à chaud Download PDF

Info

Publication number
EP0311860B1
EP0311860B1 EP88116222A EP88116222A EP0311860B1 EP 0311860 B1 EP0311860 B1 EP 0311860B1 EP 88116222 A EP88116222 A EP 88116222A EP 88116222 A EP88116222 A EP 88116222A EP 0311860 B1 EP0311860 B1 EP 0311860B1
Authority
EP
European Patent Office
Prior art keywords
fiber
heat
nonwoven fabric
bondable
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP88116222A
Other languages
German (de)
English (en)
Other versions
EP0311860A2 (fr
EP0311860A3 (en
Inventor
Eiichi Kubo
Shingo Sasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unitika Ltd
Original Assignee
Unitika Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17207464&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0311860(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Unitika Ltd filed Critical Unitika Ltd
Publication of EP0311860A2 publication Critical patent/EP0311860A2/fr
Publication of EP0311860A3 publication Critical patent/EP0311860A3/en
Application granted granted Critical
Publication of EP0311860B1 publication Critical patent/EP0311860B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent

Definitions

  • the present invention relates to a nonwoven fabric made of a core-sheath type composite heat-bondable staple fiber having superb heat-bondability and a nonwoven fabric made of said fiber.
  • a nonwoven fabric made of composite type heat-bondable staple fiber has been known, disclosed in DE-A 33 23 467.
  • This nonwoven fabric is obtained by heat-treating a mixture of fibers containing not less than 25 weight percent of a heat-bondable composite fiber which comprises a first component consisting of 50-100 weight percent of linear low density polyethylene and 50-0 weight percent of polyethylene different therefrom, and a second component in the form of a fiber-forming polymer (polypropylene, polyester, polyamide or the like) exhibiting a melting point which is more than 30° C higher than that of these polyethylenes, the heat-treatment being performed at a temperature above the melting point of said first component but below the melting point of said second component.
  • the composite type heat-bondable fiber disclosed in said DE-A 33 23 467 is capable of offering a nonwoven fabric having a soft hand.
  • it has the drawback that it is lacking in the adhesion to fibers of other materials than polyethylene, in which case it is necessary to increase the amount of heat-bondable fiber, hardly providing a nonwoven fabric which is soft in terms of hand.
  • the GB-A-2180543 discloses a nonwoven fabric made of a core-sheath type heat-bondable fiber. It has a fiber forming component as its core component and a bondable component as its sheath component. Incidentally, in case of forming a nonwoven fabric especially using core-sheath type short fibers, the strength of each fiber per se and the force of the adhesion between each fibers are required to be sufficiently high. Furthermore it is necessary to securely incorporate the core component with the sheath component so that they will not come off each other.
  • the heat-bondable fiber disclosed in GB-A-2180543 has a sheath component made of for example unmodified polyolefin, in order to improve the force of adhesion between fibers.
  • the core component is made of a mixture containing a copolymer having good adhesion to the sheath component.
  • a non-woven fabric according to the invention is made of a heat-bondable staple fiber in the form of a core-sheath type composite fiber comprising a core component and a sheath component which covers the periphery of said core component, said sheath component being formed of ethylene copolymer consisting of ethylene and other comonomer which consists of at least one member selected from the class consisting of an unsaturated carboxylic acid, a derivative from said unsaturated carboxylic acid and a carboxylic acid anhydride of said unsaturated carboxylic acid, said core-sheath type composite fiber having a single fiber fineness of less than 8 deniers, said nonwoven fabric containing said heat-bondable fiber and being heat treated at a temperature below the melting point of the core component, said core component consisting of fiber forming polymer, said fiber-forming polymer having a melting point which is more than 30°C higher than that of the ethylene copolymer of said sheath component, the content of said comonomer is greater
  • Said nonwoven fabric is characterised in that the melt index value of said sheath component is I to 50 g/10 minutes as measured by the ASTM D-1238(E), the content of said comonomer is in a range of more than 0.79 mole percent, but no more than 5.0 mole percent, and said fiber forming polymer consists of polyethylene terephthalate, polypropylene or nylon 6.
  • a nonwoven fabric according to the invention which contains at least 15% of the heat-bondable fiber of the above-described composition, has been heat-treated at a temperature lower than the melting point of said core component.
  • the comonomer of ethylene copolymer in the invention is an unsaturated carboxylic acid, a derivative from said carboxylic acid, or a carboxylic acid anhydride.
  • unsaturated carboxylic acids such as acrylic acid and methacrylic acid
  • acrylic esters such as methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, and 2-hydroxyethyl acrylate
  • methacrylate esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate 2-ethylhexyl methacrylate
  • unsaturated carboxylic acid anhydrides such as maleic acid anhydride and itaconic acid anhydride.
  • the ethylene copolymer of the invention contains one or more such comonomers; thus, these comonomers may be suitably combined. Further, the ethylene copolymer of the invention may be a copolymerisate of ethylene and said carboxylic acid compound in alternate, random or block form or mixture of such forms.
  • the copolymerization ratio of the comonomer mole to ethylene is restricted to 0.1-5.0 percent with respect to ethylene from the standpoint of physical properties of the copolymer ethylene.
  • the copolymerization ratio is less than 0.1 mole percent, the adhesion to other fibers is low as in the case of polyethylene alone, with the result that a nonwoven fabric of low strength can only be obtained.
  • the copolymerization ratio is greater than 5.0 mole percent, the adhesion to other fibers becomes higher, but the melting point or softening point of the ethylene copolymer polyethylene becomes extremely low, which is not desirable from the standpoint of heat resistance when a nonwoven fabric is formed.
  • the reason for restricting the melt index value of the ethylene copolymer to 1-50 g/10 minutes as measured by ASTM D-1238(E) is that in the case of an ethylene copolymer whose melt index value is less than 1 g/10 minutes, the fluidity associated with melt spinning is degraded to the extent that a composite fiber cannot be produced unless the spinning speed is drastically decreased.
  • the melt index value exceeds 50 g/10 minutes, this is not desirable since this decreases the strength of the composite fiber. It is necessary that the melting point of the core component of the composite type heat-bondable fiber be more than 30°C higher than the melting point of the ethylene copolymer of the sheath component. To obtain a fabric satisfactory in strength, it is necessary that the heat-bondable fiber be sufficiently melted in the heat treatment process and that after the heat treatment, the configuration of the composite fiber be sufficiently retained. To this end, the difference in melting point between the core and sheath components must be at least 30°C.
  • the fiber-forming polymer which constitutes the core component this is polypropylene, polyester and polyamide, which can be melt-spun.
  • the composite type heat-bondable fiber in the present invention is a composite fiber having a cross-sectional shape in which ethylene copolymer covers the fiber-forming polymer.
  • the composition ratio it is preferable that the amount of the ethylene copolymer in the sheath component be 20-80 weight percent and the amount of the fiber-forming polymer in the core component be 80-20 weight percent.
  • the strength of the resulting nonwoven fabric is high but the force of adhesion of a mixture to other fibers for making a nonwoven fabric is low; thus, only a nonwoven fabric of low strength can be obtained.
  • the amount of the ethylene copolymer of the sheath component exceeds 80 weight percent, the force of adhesion in the nonwoven fabric is high but the strength of the fiber itself is low; thus, the nonwoven fabric is of low strength.
  • the fiber of the invention is a composite fiber whose single fiber fineness is less than 8 deniers. That is, the composite type heat-bondable fiber of the invention is suitable for forming a nonwoven fabric which is required to be particularly soft; thick single fiber would lead to high stiffness and undesirable hand. Therefore, the invention is not directed to thick fibers whose fineness exceeds 8 deniers.
  • the ethylene copolymer which is the sheath component may have mixed therewith such a polyolefin as polyethylene or polypropylene or may have added thereto a hygroscopic agent, a delusterant, a pigment, a stabilizer and/or a flame retardant.
  • the composite type heat-bondable fiber of the invention can be produced by using a composite spinning device known in the art.
  • the melt spinning temperature for the sheath component is 180-280° C, preferably 190-250° C, while the melt spinning temperature for the core component may be set according to the conditions for spinning the fiber-forming polymer alone selected as the core component.
  • the spun, non stretched composite fiber may go without a stretching process in the case where its single fiber fineness is less than 8 deniers; however, usually the resulting non stretched fiber is cold-stretched to 2-8 times the original length at a temperature which is above the room temperature but below the melting point of the sheath component, to provide a composite type heat-bondable fiber.
  • a group of fibers for forming a nonwoven fabric is composed of either a composite type heat-bondable fiber of less than 8 deniers or a mixture of said heat-bondable fiber and other fibers with a finenesss of less than 8 deniers, said mixture containing at least 15 weight percent of said heat-bondable fibers with respect to the total amount of the mixed fibers.
  • said other fibers it is possible to use any fibers that will neither melt nor greatly shrink during heat treatment for nonwoven fabric production and that satisfy the aforesaid fineness condition.
  • one or two or more members selected from the group consisting of natural fibers such as cotton and wool, semi-synthetic fibers such as viscose rayon and cellulose acetate, and synthetic fibers such as polyolefin fibers such as polyethylene and polypropylene, polyamide fiber, polyester fiber and acrylic fiber may be suitably selectively used in an amount which is less than 85 weight percent with respect to the total amount of the mixed fibers. If the amount of the composite type heat-bondable fiber in the mixed fibers is less than 15 weight percent, this is undesirable as the strength of the nonwoven fabric decreases. The reason why the fineness of other fibers to be mixed with said composite type heat-bondable fiber is restricted to less than 8 deniers is that if a fiber having a fineness greater than this value, it is impossible to obtain a nonwoven fabric of good hand.
  • a method of forming a composite type heat-bondable fiber alone or a mixture of said composite fiber and other fibers into a web use may be made of known methods used for producing nonwoven fabrics in general, such as carding, air laying, wet paper screening. Then, the resulting group of fibers in web form is heat-treated at a temperature below the melting point of the core component of the composite fiber, whereby a nonwoven fabric is obtained.
  • heat treating devices including such dryers as a hot air dryer and a suction drum dryer, and such hot rolls as a flat calender roll and an embossing roll.
  • the heat-bondable fiber of the invention is used for a nonwoven fabric or it is mixed with other fibers to serve as a binder, a nonwoven fabric of good hand can be obtained since in either case the force of adhesion between fibers is high. For this reason, it has a wide application in covering sheets for disposable diapers and sanitary articles and in the medical field.
  • the maximum tensile strength of a 30 mm wide and 100 mm long test piece was measured according to JIS L-1096 Strip Method.
  • a 50 mm x 100 mm test piece was formed into a 50 mm high cylinder having a circumference of 100 mm, and said cylinder placed on a flat plate type load cell was loaded under compression; the maximum compression load applied was measured.
  • Melt extrusion was performed by using as a sheath component ethylene copolymer whose melt index value measured by ASTM D-1238(E) was 10g/10 minutes and whose melting point measured by DSC was 104.6° C and as a core component polyethylene terephthalate whose intrinsic viscosity ( ⁇ ) measured in a phenol/tetrachloroethane (ratio, 1:1) mixed solvent at 20° C was 0.70 and whose melting point measured by DSC was 255° C, and using a composite fiber melt spinning device with a spinneret having 390 holes, at a melting temperature of 230° C for the ethylene copolymer and a melting temperature of 285°C for the polyethylene terephthalate, a single hole delivery rate of 1.5 g/min, the ethylene copolymer /polyethylene terephthalate composite ratio being 50:50.
  • the fiber was taken up at a rate of 1100 m/min.
  • the resulting composite non stretched fiber was stretched at a stretch temperature of 85°C and a stretch factor of 3.5 times and crimped by a stuffer type crimper, whereupon it was cut into lengths of 51 mm to produce a staple fiber whose single fiber fineness was 3.5 deniers.
  • this composite fiber staple was fed to a carding machine to form a web having a weight of 15 g/m 2 , and the web was then heat-treated at 120°C by using a suction dryer to form a nonwoven fabric.
  • the properties of the nonwoven fabric obtained are shown in Table 2.
  • Example 1 spinning, stretching and crimping of a core-sheath type composite fiber were performed in the same manner as that of Example 1 by using low density polyethylene whose melt index measured by ASTM D-1238(E) was 10 g/10 minutes and whose melting point measured by DSC was 105°C as a sheath component instead of using the ethylene copolymer of Example 1.
  • Staple fiber consisting of a composite heat-bondable fiber containing a sheath component formed of the ethylene copolymer obtained in Example 1 and a core component formed of polyethylene terephthalate was fed to a carding machine to form a web having a weight of 15 g/m2, said web being heat-treated by calender rolls comprising a metal hot roll and a rubber roll at a roll temperature of 100° C and a line pressure of 35 kg/cm, whereby a nonwoven fabric was obtained.
  • the performance of this nonwoven fabric is shown in Table 2.
  • a web was produced in the same manner as that of Example 2 by using staple fiber consisting of a composite heat-bondable fiber containing a sheath component formed of the low density polyethylene obtained in Comparative Example 1 and a core component formed of polyethylene terephthalate, said web being then formed into a nonwoven fabric under the calender conditions of Example 2.
  • the performance of the nonwoven fabric obtained is shown in Table 2.
  • melt extrusion was performed by using as a sheath component the ethylene copolymer used in Example 1 and as a core component polypropylene whose melt flow rate measured by ASTM D-1238(L) was 15 g/10 minutes and whose melting point measured by DSC was 165° C and using a composite spinning device similar to the one used in Example 1, at a melt spinning temperature of 230° C for the ethylene copolymer , a melt temperature of 270° C for the polypropylene, a single hole delivery rate of 2.0 g/min, the ethylene copolymer polypropylene composite ratio being 50:50 by weight. After cooling, the fiber was taken up at a rate of 1100 m/min.
  • the resulting composite non stretched fiber was stretched at a stretch temperature of 70° C and a stretch ratio of 3.5 times and crimped by a stuffer type crimper, whereupon it was cut into lengths of 51 mm to produce a staple fiber whose single fiber fineness was 3.5 deniers.
  • a nonwoven fabric was formed in the same manner as that of Example 1 by using the staple fiber obtained. The properties of this composite heat-bondable fiber are shown in Table 1 and the properties of the nonwoven fabric are shown in Table 2.
  • Nonwoven fabrics were formed in the same manner as that of Example 1, each by using a mixture of the staple fiber consisting of the heat-bondable fiber of Example 1 and another fiber.
  • the mixture contained 15 parts of the heat-bondable fiber and 85 parts of PET
  • the mixture contained 15 parts of the heat-bondable fiber and 85 parts of polypropylene.
  • the properties of the resulting nonwoven fabrics are shown in Table 3.
  • nonwoven fabrics were formed in the same manner as that of Example 1, each by using a mixture of the heat-bondable fiber of Comparative Example 1 and another fiber.
  • the mixture contained 20 parts of heat-bondable fiber and 80 parts of PET and the mixture (Comparative Example 4) contained 20 parts of heat-bondable fiber and 80 parts of polypropylene.
  • the properties of the nonwoven fabrics are shown in Table 3.
  • Nonwoven fabrics were obtained, each by mixing the heat-bondable fiber of Example 3 with another fiber and passing the mixture through a carding machine in the same manner as in example 1 to form a web, which was then heat-treated by the calender roll method at a roll temperature of 100° C and a line pressure of 35 kg/cm in the same manner as that of Example 2.
  • the properties of said nonwoven fabrics are shown in Table 3.
  • Melt extrusion was performed by using as a sheath component the ethylene copolymer used in Example 1 and as a core component nylon 6 polymer whose relative viscosity ⁇ re1 measured by an Ostwald viscometer by dissolving 1.0 g of the polymer in 100 cc of 96% concentrated sulfuric acid was 2.6 and whose melting point measured by DSC was 220° C, and by using a spinneret having 390 holes, at a melting temperature of 230° C for the ethylene copolymer and a melting temperature of 270° C for the nylon 6 polymer, a single hole delivery rate of 2.0 g/min, the ethylene copolymer/nylon 6 polymer composite ratio being 50:50 by weight.
  • the fiber was taken up at a rate of 1100 m/min.
  • the resulting composite non stretched fiber was stretched at a stretch temperature of 80°C and a stretch ratio of 5.5 times and crimped by a stuffer type crimper, whereupon it was cut into lengths of 51 mm to produce a staple fiber whose single fiber fineness was 3.5 deniers.
  • the resulting staple fiber was mixed with another fiber and passed through a carding machine in the same manner as that of Example 1 to form a web, which was then heat-treated at a temperature of 120°C by a suction drum drier to provide a nonwoven fabric.
  • the properties of the composite type heat-bondable fiber are shown in Table 1 and the properties of the nonwoven fabrics obtained are shown in Table 3.
  • Composite type heat-bondable fiber was produced under the same conditions as in Example 1 except using as a sheath component ethylene copolymer which contained 3 mole percent of acrylic acid and whose melt index measured by ASTM D-1238(E) was 20 g/10 minutes and whose melting point measured by DSC was 96.2° C.
  • the heat-bondable fiber obtained was mixed with another fiber and the mixture was formed into a web in the same manner as that of Example 1 by a carding machine, said web being then heat-treated at a temperature 120° C by the suction drum dryer method to provide a nonwoven fabric.
  • the properties of the composite type heat-bondable fibcr are shown in Table 1, and the performance of the nonwoven fabrics obtained are shown in Table 3.
  • Composite type heat-bondable fiber was produced under the same conditions as in Example 1 except for using as a sheath component copolymer polyethylene which contained 0.5 mole percent of acrylic acid anhydride and 1.5 mole percent of ethylacrylate serving as-comonomers of ethylene and whose melt index measured by ASTM D-1238(E) was 5 g/10 minutes and whose melting point measured by DSC was 107° C.
  • the heat-bondable fiber obtained was mixed with another fiber and the mixture was formed into a web in the same manner as in Example 1 by a carding machine, said web being then heat-treated at a temperature 120° C by the suction drum dryer method to provide a nonwoven fabric.
  • the properties of the composite type heat-bondable fiber are shown in Table 1, and the properties of the nonwoven fabrics obtained are shown in Table 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Multicomponent Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Claims (1)

  1. Non-tissé composé de fibres coupées thermo-liables sous la forme de fibres composites du type à âme et gaine comprenant
    un composant d'âme et un composant de gaine qui recouvre la périphérie dudit composant d'âme,
    ledit composant de gaine étant formé d'un copolymère d'éthylène composé d'éthylène et d'un autre comonomère qui est constitué par au moins un membre choisi dans le groupe consistant en les acides carboxyliques insaturés, les dérivés desdits acides carboxyliques insaturés et les anhydrides desdits acides carboxyliques insaturés,
    lesdites fibres composites du type à âme et gaine ayant un degré homogène de finesse de fibres de moins de 8 deniers,
    ledit non-tissé contenant lesdites fibres thermo-liables et étant traité thermiquement à une température inférieure au point de fusion du composant d'âme,
    ledit composant d'âme consistant en un polymère formant des fibres,
    ledit polymère formant des fibres ayant un point de fusion qui est supérieur de plus de 30°C à celui du copolymère d'éthylène dudit composant de gaine,
    la teneur en ledit comonomère étant supérieure à 0,1% en moles, et
    le pourcentage en poids desdites fibres thermo-liables dans ledit non-tissé étant d'au moins 15% en poids,
       caractérisé en ce que
    l'indice d'écoulement à l'état fondu dudit composant de gaine a une valeur de 1 à 50 g/10 min, mesuré selon la norme ASTM D-1238(E),
    la teneur en ledit comonomère est supérieure à 0,79% en moles, mais ne dépasse pas 5,0% en moles, et
    le polymère formant des fibres est constitué par du polypropylène, du nylon-6 ou du polytéréphtalate d'éthylène.
EP88116222A 1987-10-02 1988-09-30 Non-tissé fabriqué à partir de filaments soudables à chaud Revoked EP0311860B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62250409A JPH0192415A (ja) 1987-10-02 1987-10-02 熱接着繊維及びその不織布
JP250409/87 1987-10-02

Publications (3)

Publication Number Publication Date
EP0311860A2 EP0311860A2 (fr) 1989-04-19
EP0311860A3 EP0311860A3 (en) 1990-07-04
EP0311860B1 true EP0311860B1 (fr) 1996-07-03

Family

ID=17207464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116222A Revoked EP0311860B1 (fr) 1987-10-02 1988-09-30 Non-tissé fabriqué à partir de filaments soudables à chaud

Country Status (3)

Country Link
EP (1) EP0311860B1 (fr)
JP (1) JPH0192415A (fr)
DE (1) DE3855393T2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5643662A (en) 1992-11-12 1997-07-01 Kimberly-Clark Corporation Hydrophilic, multicomponent polymeric strands and nonwoven fabrics made therewith
US5948529A (en) * 1997-02-26 1999-09-07 Hna Holdings, Inc. Bicomponent fiber

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2030311A1 (fr) * 1989-12-21 1991-06-22 Barrie L. Davies Appareil servant au filage de fibres a deux composants, produits fabriques a l'aide de cet appareil et methode ainsi mise en oeuvre
JP2662466B2 (ja) * 1990-03-26 1997-10-15 大和紡績株式会社 ポリオレフィン系親水性不織布
JPH042817A (ja) * 1990-04-13 1992-01-07 Daiwabo Create Kk 熱接着性複合繊維
US5167765A (en) * 1990-07-02 1992-12-01 Hoechst Celanese Corporation Wet laid bonded fibrous web containing bicomponent fibers including lldpe
US5167764A (en) * 1990-07-02 1992-12-01 Hoechst Celanese Corporation Wet laid bonded fibrous web
US6251224B1 (en) 1999-08-05 2001-06-26 Owens Corning Fiberglass Technology, Inc. Bicomponent mats of glass fibers and pulp fibers and their method of manufacture
US6488811B1 (en) 2001-04-30 2002-12-03 Owens Corning Fiberglas Technology, Inc. Multicomponent mats of glass fibers and natural fibers and their method of manufacture
US7008888B2 (en) 2003-07-24 2006-03-07 E. I. Du Pont De Nemours And Company Multiple component spunbond web
WO2010151627A2 (fr) * 2009-06-24 2010-12-29 Federal-Mogul Powertrain, Inc. Matériau en feuille non tissé, panneau produit à partir de celui-ci et procédés de production associés
JP6286231B2 (ja) * 2014-02-28 2018-02-28 ダイワボウホールディングス株式会社 フィブリル形成性複合繊維および繊維集合物
JP6851613B2 (ja) * 2016-08-30 2021-03-31 ユニチカ株式会社 布帛製補強材の製造方法
JP6960657B2 (ja) * 2017-05-12 2021-11-05 ユニチカ株式会社 複合型モノフィラメント糸の製造方法
JP7112769B2 (ja) * 2020-12-25 2022-08-04 ユニチカ株式会社 樹脂製容器の壁の補強方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110583B2 (fr) * 1982-06-29 1986-03-29 Chisso Corp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021908A (ja) * 1983-07-14 1985-02-04 Chisso Corp 複合モノフイラメントの製造法
JPS6269822A (ja) * 1985-09-19 1987-03-31 Chisso Corp 熱接着性複合繊維
AU7049687A (en) * 1986-03-24 1987-10-01 Kimberly-Clark Corporation Ethylene-vinyl copolymers and methods for their formation into elastomeric fibrous products
JPH06110583A (ja) * 1992-09-25 1994-04-22 Anritsu Corp リセット回路

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110583B2 (fr) * 1982-06-29 1986-03-29 Chisso Corp

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Encyclopedia of Polymer Science and Engineering, vol. 6; John Wiley & Sons, New York (US); p. 423 (1986) *
Encyclopedia of Polymer Science and Engineering, vol. 6; John Wiley & Sons, New York (US); p. 830 (1986) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5643662A (en) 1992-11-12 1997-07-01 Kimberly-Clark Corporation Hydrophilic, multicomponent polymeric strands and nonwoven fabrics made therewith
US5948529A (en) * 1997-02-26 1999-09-07 Hna Holdings, Inc. Bicomponent fiber

Also Published As

Publication number Publication date
DE3855393D1 (de) 1996-08-08
EP0311860A2 (fr) 1989-04-19
DE3855393T2 (de) 1996-12-05
JPH0192415A (ja) 1989-04-11
EP0311860A3 (en) 1990-07-04

Similar Documents

Publication Publication Date Title
US5277974A (en) Heat-bondable filament and nonwoven fabric made of said filament
EP0311860B1 (fr) Non-tissé fabriqué à partir de filaments soudables à chaud
US4477516A (en) Non-woven fabric of hot-melt adhesive composite fibers
JP5037964B2 (ja) 湿式不織布用繊維
DE2747177B2 (de) Wärmeverklebbare Verbundfasern
JPH02200868A (ja) 極細複合繊維およびその織布または不織布
JPH0137505B2 (fr)
DE69920993T2 (de) Zweikomponentenfaser
GB2121423A (en) Hot-melt adhesive fibres
US5302447A (en) Hotmelt-adhesive fiber sheet and process for producing the same
JP6548634B2 (ja) ポリエステルバインダー繊維
DE60100458T3 (de) Polypropylenfasern
JP4031382B2 (ja) エアレイド不織布用熱接着性複合繊維
JP2002180331A (ja) 熱接着性複合繊維、その製造方法およびそれを用いた繊維成形体
EP2126169B1 (fr) Fibre de conjugué séparable comprenant du polyacétal, et forme fibreuse et produit obtenus chacun à partir de cette fibre
JPS63243324A (ja) 熱接着繊維及びその不織布
JP3525536B2 (ja) 改質ポリオレフィン系繊維およびそれを用いた不織布
JP2564713B2 (ja) 熱接着性複合繊維およびその繊維集合体
DE60100509T3 (de) Polypropylenfasern
JP2691320B2 (ja) 伸縮性不織布
JP3150218B2 (ja) 生分解性短繊維不織布
JPS6139409B2 (fr)
JPH0823085B2 (ja) 熱接着性複合繊維及びその不織布
JP2741113B2 (ja) 伸縮性不織布の製造方法
JP2581821B2 (ja) 熱接着性複合繊維

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

16A New documents despatched to applicant after publication of the search report
17P Request for examination filed

Effective date: 19901228

17Q First examination report despatched

Effective date: 19930421

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3855393

Country of ref document: DE

Date of ref document: 19960808

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: HOECHST TREVIRA GMBH & CO KG

Effective date: 19970403

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980915

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980916

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19981030

Year of fee payment: 11

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19990819

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 990819