WO2002027092A1 - Method of preparing water-soluble nonwoven fabric - Google Patents
Method of preparing water-soluble nonwoven fabric Download PDFInfo
- Publication number
- WO2002027092A1 WO2002027092A1 PCT/KR2001/000437 KR0100437W WO0227092A1 WO 2002027092 A1 WO2002027092 A1 WO 2002027092A1 KR 0100437 W KR0100437 W KR 0100437W WO 0227092 A1 WO0227092 A1 WO 0227092A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nonwoven fabric
- fabric
- water soluble
- prepared
- acetic acid
- Prior art date
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 54
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000004744 fabric Substances 0.000 claims abstract description 30
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 20
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 16
- 238000006266 etherification reaction Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 5
- 230000018044 dehydration Effects 0.000 claims abstract description 4
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 4
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000005517 mercerization Methods 0.000 claims description 11
- 235000019441 ethanol Nutrition 0.000 claims description 10
- 238000006386 neutralization reaction Methods 0.000 claims description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 4
- 125000003158 alcohol group Chemical group 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 10
- 239000002362 mulch Substances 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical class CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 229920002994 synthetic fiber Polymers 0.000 description 5
- 239000012209 synthetic fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- -1 sheet Substances 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 238000009933 burial Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/11—Compounds containing epoxy groups or precursors thereof
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
-
- 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
- D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
- D06M11/40—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table combined with, or in absence of, mechanical tension, e.g. slack mercerising
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
- D06M13/21—Halogenated carboxylic acids; Anhydrides, halides or salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/02—Chemical or biochemical treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]
Definitions
- the present invention relates to a method of preparing a water soluble nonwoven fabric or cloth. More particularly, the present invention relates to a method of preparing a water soluble nonwoven fabric or cloth that is prepared from cellulose fibers.
- the present invention includes a nonwoven fabric or cloth, sheet, film, woven fabric, knitted fabric, yarn and the like, which are water soluble by preparing in accordance with the method of the present invention.
- Nonwoven fabric is widely used in various applications, for example, baby's napkin, women's sanitary napkin and toilet paper, packaging materials of foods and detergents, adsorbents, adhesives, base fabric for embroidery, head rest for airplane seat and the like.
- the conventional various nonwoven fabric is made of synthetic fibers or natural fibers. As the synthetic fibers are not water soluble, the nonwoven fabric causes a serious environmental problem. Although the nonwoven fabric is made of natural fibers, if the natural fibers are not water soluble, the nonwoven fabric causes an environmental problem, too.
- the natural fibers are cellulose fibers and classified into pure natural fibers such as cotton and wool, regenerated fibers such as viscose rayon, and pulp fibers.
- the synthetic fibers are prepared from polymers such as polyethylene, polypropylene, polyamide, polyester and the like. Such natural and synthetic fibers are not water soluble. Therefore, most of the conventional nonwoven fabrics including the packaging material and the head rest are water insoluble.
- nonwoven fabrics are rarely recycled and disposed by burial in the ground or by combustion.
- the burial or combustion of the nonwoven fabric causes serious environmental problems. If the nonwoven fabic is water soluble, such environmental problems could be prevented.
- a base fabric for embroidery should be water soluble.
- the base fabric for embroidery is a nonwoven fabric and used for embroidery in lingerie.
- the base fabric is used to embroider on the lingerie, then the base fabric should be removed by dissolving.
- the conventional nonwoven base fabric for embroidery is prepared from polyvinyl alcohol staple fibers. After embroidery on lingerie, the base fabric is removed. To remove the base fabric, the product should be treated in a hot bath over 95 ° C .
- the lingerie can be damaged, the cost for manufacturing increases, and the material of the lingerie should be resistant to the hot temperature. If a base fabric for embroidery which is water soluble at room temperature is developed, the disadvantages above can be solved. If so, it is not necessary to treat the lingerie at a hot bath to remove the base fabric, the cost for manufacturing shall go down, the material of the lingerie can be diversified to choose, and there is no risk for the product to be damaged from the hot bath.
- the applications can be expanded, for example, to the packaging materials, mulch films for agriculture, gauze for medical use and the like.
- the conventional gauze is agglomerated with blood on the skin of a human body. Accordingly, when the gauze is removed, a pain occurs. If the gauze is water soluble at room temperature or hot water soluble, the gauze can be easily removed without pain by dissolving the gauze in the water.
- the nonwoven fabric can be applied to mulch film for agriculture.
- a water soluble nonwoven fabric There has been lots of efforts to develop a water soluble, biodegradable or ultraviolet degradable mulch film to obviate environmental problems.
- conventional mulch films are collected to dispose after harvest.
- the nonwoven fabric should not be dissolved for a certain period.
- the nonwoven fabric for mulch film should not be dissolved for about three months which is a cultivation period.
- the fabric can be applied to a mulch film.
- 5,041,252 teaches a nonwoven fabric consisting of water soluble resin fine fibers having a mean fiber diameter of at most 30 ⁇ m and a basis weight of 5 to 500 g/m 2 , which is prepared by extruding an aqueous solution containing a water soluble resin or a melt of a water soluble resin plasticized with water through nozzles, stretching the extruded material to form fibers by a high speed gas flow, heating the fibers to evaporate the water in the fibers and then collecting the fibers.
- Korean Patent Laid-Open No. 1999-67946 discloses a water degradable nonwoven fabric which is treated with a water jet, and has a high density portion and a low density portion, and has a breaking strength of at most 100 g/25 mm at wet state, and contains a water soluble or water swelling binder.
- the present invention is distinctive from the inventions of the U.S. patent and the Korean patent application above.
- the present inventor has developed a new method of preparing a nonwoven fabric which is water soluble at room temperature, and whose dissolving time can be controlled for use.
- a feature of the present invention is the provision of a nonwoven fabric which is water soluble at room temperature.
- Another feature of the present invention is the provision of a water soluble nonwoven fabric which does not cause an environmental pollution.
- a further feature of the present invention is the provision of a water soluble nonwoven fabric which is used as a base fabric for embroidery for lingerie, thereby the product is not treated in a hot bath, the lingerie cannot be damaged, the cost for manufacturing decreases, and more materials for lingerie are available.
- a further feature of the present invention is the provision of a water soluble nonwoven fabric which is used as mulch film for agriculture.
- a further feature of the present invention is the provision of a water soluble nonwoven fabric which is used as a head rest for airplanes or buses.
- a further feature of the present invention is the provision of a water soluble nonwoven fabric whose dissolving time can be controlled for use.
- a feature of the present invention is the provision of a method of preparing a nonwoven fabric which is water soluble at room temperature.
- the water soluble nonwoven fabric according to the present invention is prepared by (a) preparing a nonwoven fabric with cellulose fibers, (b) mercerizing the nonwoven fabric with aqueous sodium hydroxide in a solvent in a bath, (c) carrying out etherification of the mercerized fabric by adding monochloro acetic acid solution, (d) neutralizing the fabric with a hydrochloric acid solution to be a pH of about 6.0 to 9.0 in the bath, and (e) post-treating the fabric through dehydration and drying.
- the dissolving time of the nonwoven fabric can be controlled depending on the amounts of the solid monochloro acetic acid, solid sodium hydroxide and hydrochloric acid to be used.
- a nonwoven fabric should be prepared with cellulose fibers.
- the nonwoven fabric is treated to provide water solubility in accordance with the method of the present invention.
- a nonwoven fabric prepared with synthetic fibers cannot be applied to the method of the present invention.
- a woven fabric, a knitted fabric, a sheet and a film which are prepared with cellulose fibers can be applied to a method of the present invention. Therefore, in the present invention, the nonwoven fabric prepared with cellulose fibers includes a woven fabric, a knitted fabric, a sheet and a film which are prepared with cellulose fibers.
- the cellulose fibers are classified into pure natural fibers such as cotton, wool, linen, hemp and the like, regenerated fibers such as viscose rayon, and pulp fibers.
- the products prepared with the cellulose fibers can be water soluble at room temperature when they are treated in accordance with the method of the present invention.
- the nonwoven fabric prepared with cellulose fibers is treated with aqueous sodium hydroxide in a solvent in a bath.
- the treatment of a cellulose fibers product with aqueous sodium hydroxide is known as mercerization.
- the mercerization is easily carried out by an ordinary skilled person in the art to which the present invention pertains.
- a solvent is used for mercerization.
- Alcohols and acetones can be used as the solvent.
- the representative examples of alcohols are methyl alcohol, ethyl alcohol, isopropyl alcohol and the like, and the acetones can be easily selected by an ordinary skilled person in the art.
- aqueous sodium hydroxide and solvent are put into a closed reactor.
- a nonwoven fabric prepared with cellulose fibers put.
- the aqueous sodium hydroxide is prepared by dissolving about 50 ⁇ 80 g of solid sodium hydroxide in powder per 100 g of the nonwoven fabric in about 30 ⁇ 180 g of water.
- a solvent is added to the reactor in the amount of about 600 ⁇ 1000 ml per 100 g of the nonwoven fabric.
- the amount of sodium hydroxide in solid controls the dissolving time of the water soluble nonwoven fabric. In other words, the dissolving time of the water soluble nonwoven fabric depends on the amount of the sodium hydroxide in solid to be used in the mercerization step (b).
- the closed reactor is kept at the temperature of about 30 ⁇ 60 ° C .
- the mercerization is conducted for about 1 ⁇ 4 hours.
- etherification of the mercerized nonwoven fabric is carried out by adding monochloro acetic acid solution.
- the etherification is conducted by adding monochloro acetic acid solution to the closed reactor.
- the monochloro acetic acid solution is prepared by dissolving about 10 ⁇ 120 g of monochloro acetic acid in solid per 100 g of the nonwoven fabric in about 20 ⁇ 720 g of a solvent. Alcohols and acetones can be used as the solvent.
- the closed reactor is kept at the temperature of about 60 ⁇ 90 ° C .
- the etherification is conducted for about 1 ⁇ 3 hours.
- the amount of monochloro acetic acid in solid controls the dissolving time of the water soluble nonwoven fabric.
- the dissolving time of the water soluble nonwoven fabric depends on the amount of the monochloro acetic acid in solid to be used in the etherification step (c). The more the monochloro acetic acid is used, the shorter the dissolving time is. For example, if about 80 ⁇ 120 g of monochloro acetic acid in solid per 100 g of the nonwoven fabric is used, the dissolving time is controlled within about 2 hours.
- the dissolving time can be extended up to about 1 through 3 months.
- the etherification of the nonwoven fabric is conducted with a monochloro acetic acid solution containing a more amount of monochloro acetic acid.
- the etherification of the nonwoven fabric is conducted with a monochloro acetic acid solution containing a smaller amount of monochloro acetic acid.
- the nonwoven fabric is neutralized with a hydrochloric acid solution.
- the neutralization of the nonwoven fabric is conducted in the closed bath by adding a hydrochloric acid solution.
- the neutralization of the nonwoven fabric may also be conducted in a separate bath in which the etherified nonwoven fabric is neutralized with a mixed solution of hydrochlroride and a solvent.
- the amount of hydrochloric acid controls the dissolving time of the water soluble nonwoven fabric. In other words, the dissolving time of the water soluble nonwoven fabric depends on the amount of the hydrochloric acid to be used in the neutralization step (d).
- the bath for neutralization should be kept at a pH of about 6.0 ⁇ 9.0.
- the hydrochloric acid solution is prepared by mixing about 10 ⁇ 40 ml of hydrochloric acid with about 300 ⁇ 500 ml of a solvent per 100 g of the nonwoven fabric.
- the nonwoven fabric After completion of neutralization of the nonwoven fabric, the nonwoven fabric is post-treated through dehydration and drying. In the post-treating step, the nonwoven fabric is dehydrated by a conventional method which is easily carried out by an ordinary skilled person in the art. The dehydrated nonwoven fabric is preferably dried at the temperature of about 50 ⁇ 150 ° C .
- the nonwoven fabric according to the present invention is prepared with cellulose fibers and is completely water soluble, the nonwoven fabric can prevent any environmental problem.
- the dissolving time of the nonwoven fabric can be controlled, the nonwoven fabric according to the present invention has various applications upon the uses.
- Nonwoven fabric was prepared with cotton fibers. Four specimens of the nonwoven fabric were prepared. Each specimen was 100 g. The specimens were put into four reactors separately (Examples 1A-1D). To the reactors were 50, 60, 70 and 80 g of solid sodium hydroxide in powder added, respectively. To the reactors were 75, 90, 105 and 120 g of water added, respectively. Methyl alcohol of 800 ml was used per reactor as solvent. The reactors were kept at 50 ° C . Mercerization was conducted in the reactors for three hours.
- the water soluble nonwoven fabrics of Examples 1A-1D were obtained.
- the dissolving times of the nonwoven fabrics of Examples 1A-1D were measured as 1.5, 1.2, 0.5 and 0.2 hour, respectively.
- Nonwoven fabric was prepared with cotton fibers. Four specimens of the nonwoven fabric were prepared. Each specimen was 100 g. The specimens were put into four reactors separately (Examples 2A-2D). To the reactors was 70 g of solid sodium hydroxide in powder added, respectively. To the reactors was 105 g of water added, respectively. Ethyl alcohol of 800 ml was used per reactor as solvent. The reactors were kept at 50 ° C . Mercerization was conducted in the reactors for three hours.
- Example 2A-2D The water soluble nonwoven fabrics of Examples 2A-2D were obtained.
- the dissolving times of the nonwoven fabrics of Examples 2A-2D were measured as over 1 month, 3 days, 5 hours and 5 minutes, respectively.
- Nonwoven fabric was prepared with cotton fibers. Four specimens of the nonwoven fabric were prepared. Each specimen was 100 g. The specimens were put into four reactors separately (Examples 3A-3D). To the reactors was 70 g of solid sodium hydroxide in powder added, respectively. To the reactors was 105 g of water added, respectively. Methyl ketone of 800 ml was used per reactor as solvent. The reactors were kept at 50 °C . Mercerization was conducted in the reactors for three hours. To the closed reactors of Examples 3 A-3D was 100 g of solid monochloro acetic acid, respectively. To the reactors was 300 ml of methyl ketone added, respectively. Etherification was conducted in the reactors at 80 ° C for 2 hours.
- the water soluble nonwoven fabrics of Examples 3A-3D were obtained.
- the dissolving times of the nonwoven fabrics of Examples 3A-3D were measured as 1.3 hour, 0.5 hour, 5 minutes and 1 minute, respectively.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Nonwoven Fabrics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001244760A AU2001244760A1 (en) | 2000-09-29 | 2001-03-20 | Method of preparing water-soluble nonwoven fabric |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000057474A KR20020025564A (ko) | 2000-09-29 | 2000-09-29 | 수용성 부직포 및 그 제조방법 |
KR2000/57474 | 2000-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002027092A1 true WO2002027092A1 (en) | 2002-04-04 |
Family
ID=19691171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2001/000437 WO2002027092A1 (en) | 2000-09-29 | 2001-03-20 | Method of preparing water-soluble nonwoven fabric |
Country Status (4)
Country | Link |
---|---|
US (1) | US20020039868A1 (ko) |
KR (1) | KR20020025564A (ko) |
AU (1) | AU2001244760A1 (ko) |
WO (1) | WO2002027092A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10793984B2 (en) | 2016-08-04 | 2020-10-06 | Pvh Corporation | Non-iron fabrics and garments, and a method of finishing the same |
CN114875571A (zh) * | 2022-06-07 | 2022-08-09 | 广州宇然膜丽无纺制品有限公司 | 一种高吸水高透明无纺布及其制备方法与应用 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7638228B2 (en) * | 2002-11-27 | 2009-12-29 | Saint Louis University | Enzyme immobilization for use in biofuel cells and sensors |
US9783325B1 (en) | 2010-08-07 | 2017-10-10 | Christy Booth Hierholzer | Bath water enhancing packet and method of use |
KR101643728B1 (ko) * | 2014-03-31 | 2016-07-29 | (주)태봉 | 천연 셀룰로오스의 표면 개질을 통한 기능성 젤화 분말의 제조 방법 및 이로부터 제조된 기능성 젤화 분말 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4063018A (en) * | 1975-04-07 | 1977-12-13 | Daicel Ltd. | Process for preparing alkali metal salt of carboxymethyl cellulose ether |
US4547571A (en) * | 1983-10-06 | 1985-10-15 | Kohjin Co., Ltd. | Process for preparing carboxymethyl ethyl cellulose suitable for enteric coating |
US4575376A (en) * | 1983-11-07 | 1986-03-11 | International Playtex | Method for increasing the absorbency of cellulosic fibers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS602707A (ja) * | 1983-06-20 | 1985-01-09 | Unitika Ltd | 柔軟性に優れた吸湿性再生セルロ−ス系フイラメント糸及びその製造法 |
JP3134536B2 (ja) * | 1992-08-19 | 2001-02-13 | 日清紡績株式会社 | 吸水性セルロース系繊維の製造方法 |
JPH1077571A (ja) * | 1996-09-04 | 1998-03-24 | Mic Kk | 可溶性止血セルロース繊維 |
JP3057446B1 (ja) * | 1999-03-05 | 2000-06-26 | 株式会社ホギメディカル | 可溶性創傷治癒止血セルロ―ス繊維とその製造方法、及びこれを用いた創傷部の止血治癒方法 |
-
2000
- 2000-09-29 KR KR1020000057474A patent/KR20020025564A/ko not_active Application Discontinuation
-
2001
- 2001-03-20 AU AU2001244760A patent/AU2001244760A1/en not_active Abandoned
- 2001-03-20 WO PCT/KR2001/000437 patent/WO2002027092A1/en active Application Filing
- 2001-04-04 US US09/826,223 patent/US20020039868A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4063018A (en) * | 1975-04-07 | 1977-12-13 | Daicel Ltd. | Process for preparing alkali metal salt of carboxymethyl cellulose ether |
US4547571A (en) * | 1983-10-06 | 1985-10-15 | Kohjin Co., Ltd. | Process for preparing carboxymethyl ethyl cellulose suitable for enteric coating |
US4575376A (en) * | 1983-11-07 | 1986-03-11 | International Playtex | Method for increasing the absorbency of cellulosic fibers |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10793984B2 (en) | 2016-08-04 | 2020-10-06 | Pvh Corporation | Non-iron fabrics and garments, and a method of finishing the same |
CN114875571A (zh) * | 2022-06-07 | 2022-08-09 | 广州宇然膜丽无纺制品有限公司 | 一种高吸水高透明无纺布及其制备方法与应用 |
Also Published As
Publication number | Publication date |
---|---|
KR20020025564A (ko) | 2002-04-04 |
AU2001244760A1 (en) | 2002-04-08 |
US20020039868A1 (en) | 2002-04-04 |
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