EP1652995A1 - Method of preparing fabrics having lotus leaf effect and fabrics having lotus leaf effect - Google Patents

Method of preparing fabrics having lotus leaf effect and fabrics having lotus leaf effect Download PDF

Info

Publication number
EP1652995A1
EP1652995A1 EP05255883A EP05255883A EP1652995A1 EP 1652995 A1 EP1652995 A1 EP 1652995A1 EP 05255883 A EP05255883 A EP 05255883A EP 05255883 A EP05255883 A EP 05255883A EP 1652995 A1 EP1652995 A1 EP 1652995A1
Authority
EP
European Patent Office
Prior art keywords
fabrics
fabric
treatment
lotus leaf
leaf effect
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.)
Withdrawn
Application number
EP05255883A
Other languages
German (de)
French (fr)
Inventor
Young Chin Chen
Hsing-Nan Chung
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.)
Formosa Taffeta Co Ltd
Original Assignee
Formosa Taffeta Co 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
Application filed by Formosa Taffeta Co Ltd filed Critical Formosa Taffeta Co Ltd
Publication of EP1652995A1 publication Critical patent/EP1652995A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • D06M13/322—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 nitrogen
    • D06M13/395—Isocyanates
    • 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
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, e.g. by ultrasonic waves, corona discharge, irradiation, electric currents or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/02—Sonic or ultrasonic waves; Corona discharge
    • 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
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, e.g. by ultrasonic waves, corona discharge, irradiation, electric currents or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/02—Sonic or ultrasonic waves; Corona discharge
    • D06M10/025—Corona discharge or low temperature plasma
    • 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
    • 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
    • D06M13/08—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with halogenated hydrocarbons
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/05—Lotus effect

Definitions

  • the subject invention relates to a method for surface treatment of fabrics. Specifically, the subject invention relates to a method for preparing fabrics having a lotus leaf effect. The subject invention also relates to fabrics having a lotus leaf effect.
  • the object of the present invention is to provide a method for preparing fabrics having a lotus leaf effect.
  • Another object of the present invention is to provide fabrics having a lotus leaf effect.
  • the present invention relates to a method for preparing a fabric having a lotus leaf effect, comprising, after a dyeing step and a drying step, a surface treatment of the fabric including a surface modification of the fabric and a treatment of the fabric with a hydrophobic reagent.
  • the fabrics for use in the subject invention include synthetic fabrics (for example, polyester, polyamide, and polyethylene), natural fabrics (for example, cotton and rayon), or interweaved fabrics of synthetic fabrics and natural fabrics (for example, nylon/cotton and polyester/cotton).
  • the object of the surface modification is to increase the roughness of the surface of fabrics to enhance the contacting area between reagents containing hydrophobic groups and the fabrics such that the reagents containing hydrophobic groups can bond to the fabrics.
  • Any surface modification that can achieve the above object can be used for practicing the subject invention.
  • the examples of the surface modification include a plasma treatment, a corona treatment, a chemical etching treatment or an adhesive treatment.
  • the fabric is applied to a vacuum chamber (0.1 to 0.0001 torr) and suitable gas (for example air, oxygen, nitrogen, argon, carbon dioxide or their combination) is applied into the vacuum chamber.
  • suitable gas for example air, oxygen, nitrogen, argon, carbon dioxide or their combination
  • the surface of the fabric is subjected to a surface modification by introducing direct current, radio frequency or microwave excitation plasma of 50 to 1000 W for a period from 5 seconds to 600 seconds.
  • Suitable fabrics for conducting the plasma treatment are synthetic fibers, for example, polyester, polyethylene and polyamide.
  • the fabric is subjected to a surface modification with corona of 50 to 1000 W in atmosphere for a period from 5 seconds to 180 seconds.
  • Suitable fabrics for conducting the corona treatment are synthetic fibers, for example polyester, polyethylene and polyamide.
  • Natural fibers are subjected to a chemical etching treatment using an acid.
  • Synthetic fibers are subjected to a chemical etching treatment using a base, for example sodium hydroxide, sodium carbonate or sodium hydrogen carbonate.
  • the above etching treatments reduce the amount of fiber ranging from 0.5% to 30%.
  • Suitable fabrics for conducting the chemical etching treatment are synthetic fibers, for example polyester, and natural fibers, for example cotton.
  • the fabrics are immersed in a specific adhesive agent, for example a polyisocyanate (10 to 100 g/l) and then dried.
  • Preferable examples of polyisocyanate include, but not limited to, polyhexylisocyanate, polyoctylisocyanate, polynonylisocyanate and polydodecanylisocyanate.
  • Suitable fabrics for conducting the adhesive treatment are synthetic fabrics, for example polyester, and natural fabrics, for example cotton.
  • the fabrics which have been subjected to the surface modification are then treated by a hydrophobic reagent under a speed from 5 to 120 meter/min and at a temperature from 20°C to 170°C such that the hydrophobic reagent is intensely bonded onto the surface of the fabrics to result in a fabric having a lotus leaf effect.
  • Hydrophobic reagents are those commonly used in the textile field, for example silicone resins and fluorocarbons.
  • fluorocarbons are compounds of the formula R-X, wherein R is C 1 -C 15 alkyl, X is (CF 2 ) n , n is from 1 to 9.
  • Preferable fluorocarbons are compounds of the formula R-X, wherein R is C 5 -C 12 alkyl, X is (CF 2 ) n , n is from 2 to 7. More preferable fluorocarbons are compounds of the formula R-X, wherein R is C 7 -C 10 alkyl, X is (CF 2 ) n , n is from 3 to 6.
  • the fabrics having been subjected to the above treatments have a surface similar to lotus leaf such that it is difficult for stain or water droplet to adhere thereonto. Due to surface modification of the fabrics, the hydrophobic reagent bonded to the fabrics can endure laundry and has persistent waterproofing and stainproofing abilities.
  • conventional waterproofing or stainproofing treatment the fabrics are simply immersed in or coated with reagents to form a film thereon to achieve waterproofing or stainproofing ability.
  • the film formed on the fabrics is destroyed therefrom after being laundered for 25 times such that the fabrics totally lose the original waterproofing and stainproofing abilities.
  • the fabrics treated by the method of the present invention still retain excellent waterproofing and stainproofing abilities (for example tested by the procedures under AATCC test method 22) after being laundered for numerous times (for example, for 100 times or being treated under the procedures of JIS L02173-103). In other words, the fabrics of the present invention have a lotus leaf effect.
  • the method of preparing fabrics having a lotus leaf effect comprises, after a dyeing step and a drying step, a surface treatment of fabrics including a surface modification of fabrics and a treatment of fabrics with hydrophobic reagents.
  • the procedures of preparing the fabrics of the present invention comprise the steps of scouring, desizing, dyeing, drying, surface treatment, drying, maturing, post treatment.
  • the order of the steps can be adjusted or additional steps can be applied therebetween if the adjustment of order and the additional steps would not result in a negative influence on the waterproofing and stainproofing abilities of the fabrics.
  • a griege is scoured and desized under suitable conditions. For example, a griege having 400 to 600 yards/piece is scoured and desized for removing oil and impurities thereon.
  • the griege can be scoured and desized at a temperature, for example from 70°C to 110°C, preferably from 80°C to 110°C, and at a speed from 50 to 60 meters/min.
  • the griege after being desized is dyed with suitable dyes, for example, acid dyes, disperse dyes, cationic dyes, reactive dyes, indanthrene dyes and direct dyes, together with suitable dying auxiliaries in, for example, an air flow dyeing machine, a jigger dyeing machine, a winch dyeing machine, a beam dyeing machine, a jet dying machine, a rapid dyeing machine or a continuous dipping & padding dyeing machine under, for example, a temperature of 40°C to 170°C.
  • suitable dyes for example, acid dyes, disperse dyes, cationic dyes, reactive dyes, indanthrene dyes and direct dyes
  • suitable dying auxiliaries in, for example, an air flow dyeing machine, a jigger dyeing machine, a winch dyeing machine, a beam dyeing machine, a jet dying machine, a rapid dyeing machine or a continuous dipping & padding dyeing machine under, for example, a temperature of
  • the griege coming from the dyeing step is dried at a temperature from 50°C to 210°C and a speed from 5 to 80 meters/min.
  • the griege coming from the drying step is subjected to a surface treatment.
  • the griege is treated by a surface modification selected from plasma treatment, corona treatment, chemical etching treatment or adhesive treatment depending on the species of the fabrics.
  • the griege is then treated by a hydrophobic reagent at a temperature from 20°C to 170°C and a speed from 5 to 120 meters/min.
  • the griege coming from the surface treatment step is dried at a temperature from 50°C to 210°C and a speed from 5 to 80 meters/min.
  • the griege coming from the drying step is applied into an oven at a temperature from 90°C to 170°C and a speed from 5 to 90 meters/min such that the griege is matured to a fabric which is more secured.
  • the fabric can be optionally subjected to a final treatment, for example softening, cold-hot calendering, coating, lamination, and special waterproofing.
  • a final treatment for example softening, cold-hot calendering, coating, lamination, and special waterproofing.
  • the fabric can be delivered to a tank containing a softening agent to conduct the softening treatment.
  • the fabric is delivered to a machine at a suitable speed (for example 35 to 55 meter/min), a suitable height (60 to 100 mm, for example 80 mm), a suitable angle (45° to 135°, for example, 90°), a suitable temperature (110°C to 130°C, for example 120°C) to conduct the waterproofing treatment.
  • the fabric is then stored for a suitable period of time to effect crosslinking.
  • the fabric can be optionally subjected to a final setting to obtain the final product.
  • AATCC test method 22 is directed to a method for testing water-repellency of fabrics.
  • a fabric having a lotus leaf effect prepared by the present invention is laundered in a domestic washing machine under the procedures of JIS L02173-103, dried, and cut into a test specimen of 18 x 18 cm.
  • the specimen is conditioned at 65 ⁇ 2% relative humidity and 21 ⁇ 1°C for a minimum of 4 hours before testing.
  • the specimen is then fastened securely in a metal hoop so that it presents a smooth, wrinkle-free surface.
  • the hoop is placed in a position that it presents an angle of 45° with the stand of the tester.
  • a funnel is positioned 15.2 cm above the center of the specimen. An amount of 250 ml of distilled water at 27 ⁇ 1°C is poured into the funnel and is allowed to be sprayed onto the test specimen for 25 to 30 seconds.
  • a griege of 450 ⁇ 50 yards/piece is subjected to a scouring treatment and desizing treatment at a temperature of about 90°C and at a speed of 50 meters/min. Then, the griege is dyed and dried at a temperature of about 110°C and is treated by radio frequency of 500W in a vacuum chamber for 250 seconds to effect surface modification. After that, the griege is treated by a fluorocarbon compound having a formula of R-X wherein R is C 10 alkyl and X is (CF 2 ) 3 at a speed of 20 meters/min and at a temperature of 60°C and is then dried at a temperature of 110°C. Finally, the griege is matured at a temperature of 160°C to form a fabric having a lotus leaf effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The subject invention relates to a method of preparing fabrics having a lotus leaf effect (persistent stainproofing and waterproofing effect). The subject invention also relates to fabrics having a lotus leaf effect.

Description

    FIELD OF THE INVENTION
  • The subject invention relates to a method for surface treatment of fabrics. Specifically, the subject invention relates to a method for preparing fabrics having a lotus leaf effect. The subject invention also relates to fabrics having a lotus leaf effect.
    • BACKGROUND OF THE INVENTION
  • In conventional waterproofing or stainproofing treatment, fabrics are simply immersed in or coated with reagent(s) to form a film thereon to achieve a waterproofing or stainproofing ability. However, the film obtained does not endure laundry. For example, the film can only be laundered in a washing machine (a water temperature of 40°C) for 25 times. The waterproofing or stainproofing ability is significantly reduced after 25 times.
  • Accordingly, a method for preparing fabrics having a lotus leaf effect for preventing stain or water droplet adhered thereon and fabrics having a lotus leaf effect are highly desired.
    • SUMMARY OF THE INVENTION
  • The object of the present invention is to provide a method for preparing fabrics having a lotus leaf effect.
  • Another object of the present invention is to provide fabrics having a lotus leaf effect.
    • BRIEF DESCRIPTION OF DRAWING
    • Figure 1 represents consecutive photographs showing that stain applied to the fabric having been laundered for 100 times in a domestic washing machine can be easily removed by spraying water.
    DETAILED DESCRIPTION OF THE INVENTION
  • By way of illustration and to provide a more complete appreciation of the present invention with many of the attendant advantages thereof, the following detailed description is given concerning a method for preparing fabrics having a lotus leaf effect and fabrics having a lotus leaf effect.
  • The present invention relates to a method for preparing a fabric having a lotus leaf effect, comprising, after a dyeing step and a drying step, a surface treatment of the fabric including a surface modification of the fabric and a treatment of the fabric with a hydrophobic reagent.
  • The fabrics for use in the subject invention include synthetic fabrics (for example, polyester, polyamide, and polyethylene), natural fabrics (for example, cotton and rayon), or interweaved fabrics of synthetic fabrics and natural fabrics (for example, nylon/cotton and polyester/cotton).
  • The object of the surface modification is to increase the roughness of the surface of fabrics to enhance the contacting area between reagents containing hydrophobic groups and the fabrics such that the reagents containing hydrophobic groups can bond to the fabrics. Any surface modification that can achieve the above object can be used for practicing the subject invention. The examples of the surface modification include a plasma treatment, a corona treatment, a chemical etching treatment or an adhesive treatment.
    • Plasma treatment
  • The fabric is applied to a vacuum chamber (0.1 to 0.0001 torr) and suitable gas (for example air, oxygen, nitrogen, argon, carbon dioxide or their combination) is applied into the vacuum chamber. The surface of the fabric is subjected to a surface modification by introducing direct current, radio frequency or microwave excitation plasma of 50 to 1000 W for a period from 5 seconds to 600 seconds. Suitable fabrics for conducting the plasma treatment are synthetic fibers, for example, polyester, polyethylene and polyamide.
    • Corona treatment
  • The fabric is subjected to a surface modification with corona of 50 to 1000 W in atmosphere for a period from 5 seconds to 180 seconds. Suitable fabrics for conducting the corona treatment are synthetic fibers, for example polyester, polyethylene and polyamide.
    • Chemical etching treatment
  • Natural fibers are subjected to a chemical etching treatment using an acid. Synthetic fibers are subjected to a chemical etching treatment using a base, for example sodium hydroxide, sodium carbonate or sodium hydrogen carbonate. The above etching treatments reduce the amount of fiber ranging from 0.5% to 30%. Suitable fabrics for conducting the chemical etching treatment are synthetic fibers, for example polyester, and natural fibers, for example cotton.
    • Adhesive treatment
  • The fabrics are immersed in a specific adhesive agent, for example a polyisocyanate (10 to 100 g/l) and then dried. The polyisocyanate has a general formula of R-N=C=O, wherein R is C5-C20alkyl. Preferable examples of polyisocyanate include, but not limited to, polyhexylisocyanate, polyoctylisocyanate, polynonylisocyanate and polydodecanylisocyanate. Suitable fabrics for conducting the adhesive treatment are synthetic fabrics, for example polyester, and natural fabrics, for example cotton.
  • The fabrics which have been subjected to the surface modification are then treated by a hydrophobic reagent under a speed from 5 to 120 meter/min and at a temperature from 20°C to 170°C such that the hydrophobic reagent is intensely bonded onto the surface of the fabrics to result in a fabric having a lotus leaf effect.
  • Hydrophobic reagents are those commonly used in the textile field, for example silicone resins and fluorocarbons. Examples of fluorocarbons are compounds of the formula R-X, wherein R is C1-C15 alkyl, X is (CF2)n, n is from 1 to 9. Preferable fluorocarbons are compounds of the formula R-X, wherein R is C5-C12 alkyl, X is (CF2)n, n is from 2 to 7. More preferable fluorocarbons are compounds of the formula R-X, wherein R is C7-C10 alkyl, X is (CF2)n, n is from 3 to 6.
  • The fabrics having been subjected to the above treatments have a surface similar to lotus leaf such that it is difficult for stain or water droplet to adhere thereonto. Due to surface modification of the fabrics, the hydrophobic reagent bonded to the fabrics can endure laundry and has persistent waterproofing and stainproofing abilities. In conventional waterproofing or stainproofing treatment, the fabrics are simply immersed in or coated with reagents to form a film thereon to achieve waterproofing or stainproofing ability. However, the film formed on the fabrics is destroyed therefrom after being laundered for 25 times such that the fabrics totally lose the original waterproofing and stainproofing abilities. Nevertheless, the fabrics treated by the method of the present invention still retain excellent waterproofing and stainproofing abilities (for example tested by the procedures under AATCC test method 22) after being laundered for numerous times (for example, for 100 times or being treated under the procedures of JIS L02173-103). In other words, the fabrics of the present invention have a lotus leaf effect.
  • The method of preparing fabrics having a lotus leaf effect comprises, after a dyeing step and a drying step, a surface treatment of fabrics including a surface modification of fabrics and a treatment of fabrics with hydrophobic reagents. The procedures of preparing the fabrics of the present invention comprise the steps of scouring, desizing, dyeing, drying, surface treatment, drying, maturing, post treatment. Optionally, the order of the steps can be adjusted or additional steps can be applied therebetween if the adjustment of order and the additional steps would not result in a negative influence on the waterproofing and stainproofing abilities of the fabrics.
  • The steps of the method of the invention are described as follows.
    • Scouring & desizing
  • A griege is scoured and desized under suitable conditions. For example, a griege having 400 to 600 yards/piece is scoured and desized for removing oil and impurities thereon. The griege can be scoured and desized at a temperature, for example from 70°C to 110°C, preferably from 80°C to 110°C, and at a speed from 50 to 60 meters/min.
    • Dyeing
  • The griege after being desized is dyed with suitable dyes, for example, acid dyes, disperse dyes, cationic dyes, reactive dyes, indanthrene dyes and direct dyes, together with suitable dying auxiliaries in, for example, an air flow dyeing machine, a jigger dyeing machine, a winch dyeing machine, a beam dyeing machine, a jet dying machine, a rapid dyeing machine or a continuous dipping & padding dyeing machine under, for example, a temperature of 40°C to 170°C.
    • Drying
  • The griege coming from the dyeing step is dried at a temperature from 50°C to 210°C and a speed from 5 to 80 meters/min.
    • Surface treatment
  • The griege coming from the drying step is subjected to a surface treatment. The griege is treated by a surface modification selected from plasma treatment, corona treatment, chemical etching treatment or adhesive treatment depending on the species of the fabrics. The griege is then treated by a hydrophobic reagent at a temperature from 20°C to 170°C and a speed from 5 to 120 meters/min.
    • Drying
  • The griege coming from the surface treatment step is dried at a temperature from 50°C to 210°C and a speed from 5 to 80 meters/min.
    • Maturing
  • The griege coming from the drying step is applied into an oven at a temperature from 90°C to 170°C and a speed from 5 to 90 meters/min such that the griege is matured to a fabric which is more secured.
    • Final treatment
  • The fabric can be optionally subjected to a final treatment, for example softening, cold-hot calendering, coating, lamination, and special waterproofing. For example, the fabric can be delivered to a tank containing a softening agent to conduct the softening treatment. Then, the fabric is delivered to a machine at a suitable speed (for example 35 to 55 meter/min), a suitable height (60 to 100 mm, for example 80 mm), a suitable angle (45° to 135°, for example, 90°), a suitable temperature (110°C to 130°C, for example 120°C) to conduct the waterproofing treatment. The fabric is then stored for a suitable period of time to effect crosslinking. The fabric can be optionally subjected to a final setting to obtain the final product.
    • Test of persistent waterproofing (waterstaining) ability (1) Testing method: AATCC test method 22
  • AATCC test method 22 is directed to a method for testing water-repellency of fabrics.
    • (2) Testing device: AATCC-22 tester (3) Testing procedures
  • A fabric having a lotus leaf effect prepared by the present invention is laundered in a domestic washing machine under the procedures of JIS L02173-103, dried, and cut into a test specimen of 18 x 18 cm. The specimen is conditioned at 65±2% relative humidity and 21±1°C for a minimum of 4 hours before testing. The specimen is then fastened securely in a metal hoop so that it presents a smooth, wrinkle-free surface. The hoop is placed in a position that it presents an angle of 45° with the stand of the tester. A funnel is positioned 15.2 cm above the center of the specimen. An amount of 250 ml of distilled water at 27±1°C is poured into the funnel and is allowed to be sprayed onto the test specimen for 25 to 30 seconds.
    • Ratings for testing
    • 100: No sticking or wetting on upper surface of fabric
    • 90: Slight random sticking or wetting on upper surface of fabric
    • 80: Wetting on upper surface of fabric at spraying points
    • 70: Partial wetting on whole upper surface of fabric
    • 50: Complete wetting on whole upper surface of fabric
  • The following example is provided to further explain the invention from which the artisans can further appreciate the invention. However, the example should not be considered as a limitation to the scope of the invention.
    • Example
  • A griege of 450±50 yards/piece is subjected to a scouring treatment and desizing treatment at a temperature of about 90°C and at a speed of 50 meters/min. Then, the griege is dyed and dried at a temperature of about 110°C and is treated by radio frequency of 500W in a vacuum chamber for 250 seconds to effect surface modification. After that, the griege is treated by a fluorocarbon compound having a formula of R-X wherein R is C10 alkyl and X is (CF2)3 at a speed of 20 meters/min and at a temperature of 60°C and is then dried at a temperature of 110°C. Finally, the griege is matured at a temperature of 160°C to form a fabric having a lotus leaf effect.
    1. (1) The fabrics of the present invention and the conventional fabrics are tested according to the procedures and test method mentioned above for their waterproofing ability prior to laundry (L0), laundry for 25 times (L25) and laundry for 100 times (L100). The results of the test are listed as follows:
      Figure imgb0001
      The result of the table shows that the fabrics of the present invention obtain a high score of 80 while the conventional fabric obtain a scope of as low as 50.
    2. (2) Easy testing method for stainproofing
      The fabric after laundry for 100 times (water temperature at 40°C) is stained by mustard, catchup or honey. The stain on the fabric is easily removed by water spraying as shown in Figure 1.
  • The present invention may, of course, be carried out in other specific ways than those herein set forth without departing from the spirit and essential characteristics of the present invention. The present embodiments are, therefore, to be considered in all respects as an illustration and are not restrictive.

Claims (10)

  1. A method of preparing a fabric having a lotus leaf effect, comprising subjecting a fabric to a surface modification and treating the fabric with a hydrophobic reagent.
  2. A method according to claim 1, wherein the surface modification and treating of the fabric with a hydrophobic reagent occur after a dyeing step and a drying step.
  3. A method according to claim 1 or claim 2, wherein said surface modification comprises a plasma treatment, a corona treatment, a chemical etching treatment or an adhesive treatment.
  4. A method according to claim 3, wherein an adhesive used in the adhesive treatment is a polyisocyanate of a general formula of R-N=C=O, wherein R is C5-C20 alkyl.
  5. A method according to claim 4, wherein said polyisocyanate is polyhexylisocyanate, polyoctylisocyanate, polynonylisocyanate or polydodecanylisocyanate.
  6. A method according to any one of claims 1 to 5, wherein said hydrophobic reagent comprises a silicone resin and a fluorocarbon.
  7. A method according to claim 6, wherein said fluorocarbon is a compound of formula R-X, wherein R is C1-C15 alkyl, X is (CF2)n, n is from 1 to 9.
  8. A method according to claim 7, wherein said fluorocarbon is a compound of formula R-X, wherein R is C7-C10 alkyl, X is (CF2)n, n is from 3 to 6.
  9. A method according to any preceding claim, wherein said fabric is laundered according to procedures of JIS L02173-103 and tested according to AATCC test method 22 and retains excellent waterproofing and stainproofing abilities.
  10. A fabric obtainable by a method according to any one of claims 1 to 9.
EP05255883A 2004-10-28 2005-09-22 Method of preparing fabrics having lotus leaf effect and fabrics having lotus leaf effect Withdrawn EP1652995A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200410086246.1A CN100585059C (en) 2004-10-28 2004-10-28 Preparation of fabric with lotus leaf effect and fabric with lotus leaf effect

Publications (1)

Publication Number Publication Date
EP1652995A1 true EP1652995A1 (en) 2006-05-03

Family

ID=35737724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05255883A Withdrawn EP1652995A1 (en) 2004-10-28 2005-09-22 Method of preparing fabrics having lotus leaf effect and fabrics having lotus leaf effect

Country Status (2)

Country Link
EP (1) EP1652995A1 (en)
CN (1) CN100585059C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8349748B2 (en) 2007-03-06 2013-01-08 Formosa Taffeta Co., Ltd. Fabrics having soil resistance and no oil stains after wiping and manufacturing method thereof
CN104452011A (en) * 2014-12-25 2015-03-25 浙江三星特种纺织股份有限公司 PVC covered yarn for manufacturing sneaker upper and production technology thereof
US9593443B2 (en) 2012-11-28 2017-03-14 Crayola Llc Compositions and methods for embossing and debossing fabrics
CN115538150A (en) * 2022-09-22 2022-12-30 韶关学院 Super-hydrophobic-super-oleophylic fabric and preparation method thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101260614B (en) * 2007-03-06 2011-01-12 福懋兴业股份有限公司 Fabric with anti-oil stain and no oil stain effect after wiping and preparation method thereof
CN104179000B (en) * 2014-09-12 2015-12-02 王朗 A kind of manufacture method of waterproof woven thing
CN104878617A (en) * 2015-05-15 2015-09-02 安踏（中国）有限公司 Production method of fluoride-free waterproof woven fabric
CN115142179A (en) * 2022-06-30 2022-10-04 福建华峰新材料有限公司 Warp knitted space jacquard integrally woven waterproof shoe material fabric and its manufacturing method and application
CN116356556A (en) * 2023-04-27 2023-06-30 浙江台华新材料股份有限公司 Preparation method of durable water-repellent nylon fabric and fabric prepared therefrom

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400424A (en) * 1981-06-24 1983-08-23 Toray Industries, Inc. Fabrics having an excellent color developing property and a process for producing the same involving plasma treatment and an aftercoat
JPH03180571A (en) * 1989-12-08 1991-08-06 Unitika Ltd Deep coloration of fiber structure
JPH04174769A (en) * 1990-04-27 1992-06-22 Unitika Ltd Method for shrink-proof and water-repellent processing of animal hair fiber product
JPH1088473A (en) * 1996-09-12 1998-04-07 Toray Ind Inc Method for producing high density bulky fabric
JP3062267B2 (en) * 1991-03-01 2000-07-10 株式会社クラレ Fiber structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985741A1 (en) * 1998-09-07 2000-03-15 The Procter & Gamble Company Modulated plasma glow discharge treatments for making super hydrophobic substrates
CN1166832C (en) * 2001-09-27 2004-09-15 中国科学院化学研究所 Fabric treatment method with superamphiphilic/superamphiphobic composite function at the same time

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400424A (en) * 1981-06-24 1983-08-23 Toray Industries, Inc. Fabrics having an excellent color developing property and a process for producing the same involving plasma treatment and an aftercoat
JPH03180571A (en) * 1989-12-08 1991-08-06 Unitika Ltd Deep coloration of fiber structure
JPH04174769A (en) * 1990-04-27 1992-06-22 Unitika Ltd Method for shrink-proof and water-repellent processing of animal hair fiber product
JP3062267B2 (en) * 1991-03-01 2000-07-10 株式会社クラレ Fiber structure
JPH1088473A (en) * 1996-09-12 1998-04-07 Toray Ind Inc Method for producing high density bulky fabric

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199137, Derwent World Patents Index; Class A26, AN 1991-271826, XP002367573 *
DATABASE WPI Section Ch Week 200037, Derwent World Patents Index; Class A14, AN 1993-014699, XP002367572 *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 479 (C - 0992) 6 October 1992 (1992-10-06) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 09 31 July 1998 (1998-07-31) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8349748B2 (en) 2007-03-06 2013-01-08 Formosa Taffeta Co., Ltd. Fabrics having soil resistance and no oil stains after wiping and manufacturing method thereof
US9593443B2 (en) 2012-11-28 2017-03-14 Crayola Llc Compositions and methods for embossing and debossing fabrics
US9982385B2 (en) 2012-11-28 2018-05-29 Crayola Llc Compositions and methods for embossing and debossing fabrics
CN104452011A (en) * 2014-12-25 2015-03-25 浙江三星特种纺织股份有限公司 PVC covered yarn for manufacturing sneaker upper and production technology thereof
CN115538150A (en) * 2022-09-22 2022-12-30 韶关学院 Super-hydrophobic-super-oleophylic fabric and preparation method thereof
CN115538150B (en) * 2022-09-22 2024-03-29 韶关学院 A kind of superhydrophobic-superoleophilic fabric and preparation method thereof

Also Published As

Publication number Publication date
CN1766222A (en) 2006-05-03
CN100585059C (en) 2010-01-27
HK1089800A1 (en) 2006-12-08

Similar Documents

Publication Publication Date Title
CA2047147C (en) Atmospheric pressure plasma surface treatment process
CA1236254A (en) Soil releasing textiles containing fluoro-chemical soil release agents and method for producing same
EP1652995A1 (en) Method of preparing fabrics having lotus leaf effect and fabrics having lotus leaf effect
US4369231A (en) Method of application, and product thereof
US20060085921A1 (en) Method of preparing fabrics having lotus leaf effect and fabrics having lotus leaf effect
US7811949B2 (en) Method of treating nonwoven fabrics with non-ionic fluoropolymers
CN112030553B (en) Plasma modification method and system for fabric, non-woven fabric and porous film
KR20070084448A (en) Treated nonwovens and processing method of nonwovens
US20060090648A1 (en) Hydrophilic finish for fibrous substrates
US20060034882A1 (en) Yarns and fabrics having long-lasting mosquito repellent or antibacterial effect and their preparation
Kan et al. Plasma pretreatment for polymer deposition—improving antifelting properties of wool
JPH0314676A (en) Production of waterproof cloth
US8349748B2 (en) Fabrics having soil resistance and no oil stains after wiping and manufacturing method thereof
Wakida et al. Microscopic Observation of Cross-Section of Dyed Wool and Nylon 6 Fibers after Treatment with Low-Temperature Plasma
US3628997A (en) Method and means for treating fibrous materials and articles produced thereby
Wang et al. Cotton fabric properties with water-repellent finishing via sol–gel process
JP3494418B2 (en) Processing method of cellulosic fiber-containing fabric
EP1626118A2 (en) Yarns and fabrics having long-lasting mosquito repellent or antibacterial effect and their preparation
JPS62141177A (en) Oil staining preventing fiber structure and its production
JPS6197478A (en) Treatment of fiber
JPH0441770A (en) Water-repelling cloth and its production
JPH01239179A (en) Bathochromic treatment of fiber structure
HK1089800B (en) Preparation of fabrics having lotus leaf effect and fabrics having lotus leaf effect
JPS6327471B2 (en)
JPH0345782A (en) Production of coated cloth

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: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20061005

17Q First examination report despatched

Effective date: 20061106

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100401