Classifications

• • 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
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D01F6/40—Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile
• • 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
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent
• • 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
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
  • D01F6/54—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of unsaturated nitriles
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D27/00—Woven pile fabrics
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
  • D06C23/00—Making patterns or designs on fabrics
  • D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/70—Material containing nitrile groups
  • D06P3/76—Material containing nitrile groups using basic dyes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
  • D06P5/2066—Thermic treatments of textile materials
  • D06P5/2077—Thermic treatments of textile materials after dyeing
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/23907—Pile or nap type surface or component
  • Y10T428/23986—With coating, impregnation, or bond

Definitions

• the present invention relates to a step pile fabric produced using modacrylic shrinkable fibers that are dyed using a cationic dye in a specific low-temperature region and, at the same time, controlled to have a desired shrinkage, and a method for manufacturing the same.
• modacrylic fibers have been used widely not only in the field of knitwear but also for boas and high piles because of their hand like animal fur, high softness, vivid color development property, etc.
• the standing hair portion of natural fur essentially has a two-layer structure consisting of guard hairs and down hairs, and synthetic fibers are used to imitate them, thus producing pile products.
• a generally used method is to provide non-shrinkable fibers and shrinkable fibers that have different shrinkages in a pile portion and allow the shrinkable fibers to shrink at a pile pre-finishing stage so as to achieve a height difference from the difference in the shrinkage at this time.
• the shrinkable fibers used at this time are made to shrink at 20% to 40% shrinkage by a dry heat treatment using a pin tenter, thereby achieving the height difference.
• the accuracy of finished height difference is extremely important in imitating natural fur.
• a method of using fibers designed to have shrinkages suitable for a desired product or a method of using fibers that shrink more than a desired ratio and making a fine adjustment to an excess height difference by cutting a tip of a guard hair portion have been adopted.
• the fine adjustment to the height difference has been difficult to make. Even after the fine adjustment, too large shrinkage has led to poor hair handling. Further, not only has the process for cutting the tip portion been needed, but also there are considerable manufacturing losses.
• Patent document 2 JP 4 (1992)-119114 A
• Patent document 3 JP 2003-268623 A
• Patent document 4 JP 49 (1974)-38945 B
• modacrylic shrinkable fibers can be dyed using a cationic dye in a low-temperature region, and the shrinkage thereof during dyeing is suppressed due to the low-temperature dyeing. Then, a pile fabric containing the thus obtained modacrylic shrinkable fibers is subjected to a dry heat treatment. In this way, the modacrylic shrinkable fibers are made to shrink greatly, thus economically providing a pile fabric having a desired height difference with high quality and a wide range of color variations in a manner simpler than a conventional way.
• a step pile fabric according to the present invention contains a non-shrinkable fiber and a shrinkable fiber containing a modacrylic copolymer.
• a composition of the shrinkable fiber containing the modacrylic copolymer is a polymer composition obtained by mixing
• a copolymer (B) containing 0 wt % to 90 wt % of acrylonitrile, 2 wt % to 40 wt % of a sulfonic-group-containing monomer, and 0 wt % to 80 wt % of other vinyl monomer containing no halogen.
• the method includes A dry heat shrinkage S of the shrinkable fiber at 130° C. for 5 minutes after dyeing is 15% to 40%.
• a method for manufacturing a step pile fabric according to the present invention is a method for manufacturing a step pile fabric containing a non-shrinkable fiber and a shrinkable fiber containing a modacrylic copolymer.
• a composition of the shrinkable fiber containing the modacrylic copolymer is a polymer composition obtained by mixing
• a copolymer (B) containing 0 wt % to 90 wt % of acrylonitrile, 2 wt % to 40 wt % of a sulfonic-group-containing monomer, and 0 wt % to 80 wt % of other vinyl monomer containing no halogen.
• the method includes dyeing the shrinkable fiber containing the modacrylic copolymer at T° C., dyeing the non-shrinkable fiber, manufacturing a pile fabric by using the dyed shrinkable fiber containing the modacrylic copolymer and the dyed non-shrinkable fiber, and subjecting the pile fabric to a heat treatment.
• the above-noted dyeing temperature T° C. refers to the highest temperature that is reached from the beginning of a dyeing operation (filling a solution in a dyebath) to the end thereof (draining the solution).
• the product of the dyeing temperature T° C. and a dyeing time H minutes preferably ranges from 1800 to 5100, and the height difference preferably is produced by mixing a non-shrinkable fiber and the modacrylic shrinkable fiber at a weight ratio of 5:95 to 80:20, performing sewing, pre-polishing and pre-shirring, and then performing a dry heat treatment at 110° C. to 150° C.
• the non-shrinkable fiber is selected from fibers whose dry heat shrinkage at 130° C. for 5 minutes is smaller than 10% and particularly preferably is a modacrylic fiber.
• a step pile fabric obtained by subjecting a pile cloth containing a modacrylic shrinkable fiber that is made from the above-noted modacrylic copolymers and, after wet spinning, dyed using a cationic dye in a temperature range from 60° C. to 85° C. for achieving a dry heat shrinkage desired as a step pile to a dry heat treatment, etc. with a pin tenter drier at 110° C. to 150° C., thus making it shrink by 15% to 40%.
• a pile cloth containing modacrylic shrinkable fibers that allow dyeing in a region of a temperature lower than a conventional temperature and a shrinkage control is subjected to a dry heat treatment, whereby it becomes readily possible to provide color variations of a down hair portion of a pile fabric having a desired height difference and achieve a high-quality step pile fabric in an economical manner.
• the present invention is a method for manufacturing a step pile fabric including dyeing modacrylic shrinkable fibers that are made from a modacrylic copolymer containing 0.5 wt % to 10 wt %, preferably 1.0 wt % to 5.0 wt %, of a sulfonic-group-containing monomer and in which a dyeing temperature (T) and a shrinkage (S) in a dry heat treatment at 130° C. for 5 minutes satisfy the relationship indicated by Formula (1) below by using a cationic dye at a temperature of 60° C. to 85° C., preferably 70° C. to 80° C., and including the modacrylic shrinkable fibers as a down hair component. 70 ⁇ 0.726 T ⁇ S (%) ⁇ 85 ⁇ 0.726 T (60 ⁇ T ⁇ 85) (1)
• omf is an abbreviation of “on the mass of fiber”
• fiber agglutination becomes likely to occur in a spinning process.
• Examples of the sulfonic-group-containing monomer used in the present invention can include sodium allylsulfonate, sodium methallylsulfonate, sodium vinylsulfonate, sodium styrenesulfonate, sodium 2-acrylamido-2-methylpropanesulfonate and the like, and they can be used alone or in combination of two or more. Among them, sodium methallylsulfonate and sodium 2-acrylamido-2-methylpropanesulfonate are preferable considering cost and polymerizability.
• the dyeing temperature lower than 60° C. leads to insufficient dyeing, so that satisfactory color development cannot be achieved.
• the dyeing temperature exceeds 85° C. shrinkage occurs during dyeing, and it becomes difficult for a sufficient height difference to be produced in the later processing.
• the dry heat shrinkage calculated from Formula (1) is 15% to 40%, preferably 20% to 35%.
• the dry heat shrinkage of smaller than 15% after dyeing cannot achieve a significant height difference for a step pile fabric, whereas that exceeding 40% tends to bring about a poor quality of hair handling with a rough root portion in a final product because the fibers in a pile portion shrink while entangling each other at the time of shrinking.
• a preferable embodiment is to produce the height difference by mixing a non-shrinkable fiber and this modacrylic shrinkable fiber at a weight ratio of 5:95 to 80:20, preferably 10:90 to 70:30, performing sewing, pre-polishing and pre-shirring, and then performing a dry heat treatment at 110° C. to 150° C., preferably 120° C. to 145° C.
• the ratio of the mixed non-shrinkable fiber is less than 5% or exceeds 95%, the two-layer structure is not clear, resulting in poor natural appearance and feel. Further, when the dry heat treatment is performed at a temperature lower than 110° C., the modacrylic shrinkable fiber shrinks insufficiently, so that a significant step pile fabric cannot be achieved. On the other hand, when the dry heat treatment is performed at a temperature higher than 150° C., the crimps remaining in the fiber forming the pile portion of the pile cloth are set by heat, so that it becomes difficult to remove the crimps in the subsequent polisher process, causing problems of poor quality and productivity of the final product.
• a composition of the modacrylic copolymer of the modacrylic shrinkable fiber includes a copolymer mixture obtained by mixing 60 to 99 parts by weight of a modacrylic copolymer (A) containing 35 wt % to 98 wt % of acrylonitrile, 0.5 wt % to 5.0 wt % of a sulfonic-group-containing monomer and 2 wt % to 65 wt % of other vinyl monomer and 1 to 40 parts by weight of a modacrylic copolymer (B) containing 0 wt % to 90 wt % of acrylonitrile, 2 wt % to 40 wt % of a sulfonic-group-containing monomer and 0 wt % to 80 wt % of other vinyl monomer containing no halogen.
• A modacrylic copolymer
• B containing 0 wt % to 90 wt % of acrylonitrile,
• the modacrylic copolymer of the modacrylic shrinkable fiber contains 80 wt % to 98 wt % of acrylonitrile and 2 wt % to 20 wt % of a sulfonic-group-containing monomer and other copolymerizable monomer.
• the hand becomes rough, and further the dye-affinity tends to deteriorate.
• the other vinyl monomer exceeds 65 wt %, because the hand becomes sticky, so that the lack of voluminousness tends to occur, necessitating special conditions in finish processing such as a polisher process.
• the sulfonic-group-containing monomer exceeding 5.0 wt % is not preferable because fiber agglutination occurs in the spinning process.
• Examples of the other vinyl monomer used in the copolymer (A) include vinyl halides and vinylidene halides represented by vinyl chloride, vinylidene chloride, vinyl bromide, vinylidene bromide and the like, acrylic acids, methacrylic acids or alkyl esters thereof, vinyl acetate, acrylamide, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, glycidyl methacrylate, glycidyl acrylate, etc., and they can be used alone or in combination of two or more.
• vinyl halides and vinylidene halides represented by vinyl chloride, vinylidene chloride, vinyl bromide, vinylidene bromide and the like, acrylic acids, methacrylic acids or alkyl esters thereof, vinyl acetate, acrylamide, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, glycidyl methacrylate, glycidyl acrylate, etc
• the acrylonitrile exceeds 90 wt % in the copolymer (B)
• dyeing in medium color to deep color at 60° C. to 85° C. is difficult.
• the other vinyl monomer exceeds 80 wt %
• the fibers there is a tendency for the fibers to have a lower heat resistance and agglutination in the spinning process.
• the sulfonic-group-containing monomer is less than 2 wt %, dyeing in medium color to deep color at 60° C. to 85° C. is difficult.
• the sulfonic-group-containing monomer exceeding 40 wt % is not preferable because the fiber agglutination and bath elution occur in the spinning process.
• Examples of the other vinyl monomer containing no halogen used in the copolymer (B) include acrylic acids, methacrylic acids or alkyl esters thereof, vinyl acetate, acrylamide, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, glycidyl methacrylate, glycidyl acrylate, etc.
• vinyl acetate and methyl acrylate are preferable in terms of quality and cost.
• the ratio of the mixed copolymer (B) to the copolymer (A) is 1 to 40 parts by weight and preferably is 3 to 30 parts by weight. If the copolymer (B) is mixed in a ratio of less than 1 part by weight, the resultant modacrylic shrinkable fiber has insufficient dye-affinity in a low-temperature region. On the other hand, the ratio exceeding 40 parts by weight is not preferable because the fiber agglutination occurs in the spinning process.
• the non-shrinkable fiber used in the present invention can be, for example, natural or chemical fibers whose shrinkage at 130° C. for 5 minutes is equal to or smaller than 10% and further preferably is equal to or smaller than 5%.
• examples thereof can include natural fibers such as wool and cotton, regenerated fibers such as rayon, polyester fibers such as polyalkylene terephthalate, and modacrylic fibers such as general acrylic and modacrylic fibers.
• general acrylic and modacrylic fibers are used in a preferred manner owing to their appropriate finishing temperature conditions close to the shrinkable fiber.
• the shrinkage of the non-shrinkable fiber larger than 10% is different only slightly from that of the shrinkable fiber, so that a sufficient height difference cannot be produced.
• the present invention relates to a method for manufacturing such a step pile.
• the modacrylic shrinkable fibers obtained by wet spinning from the above-described modacrylic copolymers as raw materials are dyed using the cationic dye at a desired temperature for achieving a desired shrinkage in a temperature range from 60° C. to 85° C.
• the brand of the cationic dye used for dyeing is not particularly limited but may be a conventionally known brand. For example, “Maxilon (trade name)” series manufactured by Ciba Specialty Chemicals. and “Cathilon (trade name)” series manufactured by Hodogaya Chemical Co., LTD. can be used.
• concentration of the cationic dye is not particularly limited, 0.1 wt % to 3.0 wt % with respect to the weight of the shrinkable fiber is used in the dyeing temperature range in this document in a preferred manner in view of practicability.
• a conventionally known dyeing accelerator also may be used according to a known technological example.
• a dyeing machine can be the one of an existing kind.
• these modacrylic shrinkable fibers that have been dyed and the non-shrinkable fibers are mixed in a desired ratio to prepare a mixed fiber mass, which then is carded to produce a sliver.
• a pile fabric is produced (sewed) with a sliver lay-in circular knitting machine.
• the input density preferably is 500 to 1000 g/m 2 and particularly preferably is 600 to 900 g/m 2 in terms of hand, external appearance and weight.
• the pile lengths are aligned by a pre-shirring treatment.
• the fibers are passed through a pin tenter dry heat machine at 110° C. to 150° C. so as to be subjected to a dry heat treatment, so that they are made to shrink by 15% to 40%, which is calculated by Formula (1).
• a pin tenter dry heat machine at 110° C. to 150° C. so as to be subjected to a dry heat treatment, so that they are made to shrink by 15% to 40%, which is calculated by Formula (1).
• the pile is polished at 155° C. and then brushed, followed by a combination of polishing and shirring at 135° C., 120° C. and 90° C. (twice for each process) so as to remove crimps in a surface layer portion of the standing hairs, thereby producing a step pile fabric having a constant pile length.
• the lengths of 20 shrinkable fibers before and after dyeing are measured and averaged respectively, and the shrinkage of the modacrylic shrinkable fibers due to dyeing is calculated by the following formula.
• Shrinkage (%) of modacrylic shrinkable fiber due to dyeing 100 ⁇ (1 ⁇ Da/Db ) [wherein Db indicates the length (mm) of the shrinkable fiber before dyeing, and Da indicates the length (mm) of the shrinkable fiber after dyeing.]
• cut fibers with a small cut length are measured while enlarging the shrinkable fibers with a copying machine or the like.
• the dyeing and color development evaluations in each concentration were made from visual and sensory points of view on the following criteria.
• the exhaustion rate is calculated by the following formula by measuring the absorbance at a characteristic absorption wavelength of each dye in the dyebath after dyeing.
• Formula Exhaustion rate (%) (1 ⁇ absorbance in dyebath after dyeing/absorbance in dyebath before dyeing)
• the fibers forming the pile portion in the pile fabric before and after dry heat treatment using pin tenter are made to stand vertically such that the piles were aligned, and then the dry heat shrinkage of the modacrylic shrinkable fibers forming the down hair portion in the step pile fabric was measured using vernier calipers.
• the dry heat shrinkage was calculated by the following formula by measuring the length from a root to a tip of a down hair of the fibers forming the down hair portion (component) of the pile portion (not the length from the back surface of the pile fabric) at 10 points and averaging them.
• Shrinkage (%) 100 ⁇ (1 ⁇ Sa/Sb ) [wherein Sb indicates the pile length (mm) of the down hair component before the dry heat treatment using the pin tenter, Sa indicates the pile length (mm) of the down hair portion (component) after the dry heat treatment using the pin tenter.] It should be noted that the pile portion in the present invention refers to a standing hair portion other than a portion of a base fabric (a portion of base yarn) of the pile fabric. (4) Sensory Evaluation of External Appearance of Height Difference
• the sensory evaluation of the degree of height difference for the step pile fabric was made from visual and sensory points of view on the following criteria.
• A extremely clear height difference for step pile fabric to be observed.
• the thus obtained fibers were cut to 32 mm and packed in an Obermeyer dyeing machine at a fiber packing density of 0.30 g/cm 3 , thus performing dyeing.
• a dyeing formula at this time was 0.26% omf Maxilon Yellow 2RL 200%, 0.09% omf Maxilon Red GRL 200% and 0.17% omf Maxilon Blue GRL 300% (all manufactured by Ciba Specialty Chemicals.), and a target color was light gray.
• the heating rate at this time was 3° C./min. starting from room temperature, and when 50° C. was reached, the dyes were added, followed by continued heating.
• 70° C. Manufacturing Example 1
• 75° C. Manufacturing Example 2
• the thus obtained fibers were cut to 32 mm and packed in an Obermeyer dyeing machine at a fiber packing density of 0.30 g/cm 3 , thus performing dyeing.
• a dyeing formula at this time was 0.68% omf Maxilon Yellow 2RL 200%, 0.15% omf Maxilon Red GRL 200% and 0.14% omf Maxilon Blue GRL 300% (all manufactured by Ciba Specialty Chemicals.), and a target color was light brown.
• the heating rate at this time was 3° C./min. starting from room temperature, and when 50° C. was reached, the dyes were added, followed by continued heating. When 70° C. (Manufacturing Example 5), 80° C. (Manufacturing Example 6) and 95° C.
• a spinning solution prepared by mixing 8 parts by weight of the latter copolymer (B) with respect to the former copolymer (A) and dissolving them in acetone (Ac) was extruded through a spinneret similar to that in Manufacturing Example 1 into a 20° C.
• the thus obtained fibers were cut to 32 mm and packed in an Obermeyer dyeing machine at a fiber packing density of 0.30 g/cm 3 , thus performing dyeing.
• a dyeing formula at this time was the same as that in Manufacturing Example 5, and a target color was light brown.
• the heating rate at this time was 3° C./min. starting from room temperature, and when 50° C. was reached, the dyes were added, followed by continued heating.
• 70° C. (Manufacturing Example 8) and 80° C. (Manufacturing Example 9) were reached, the fibers were kept at these temperatures for 60 minutes. Further, after dyeing, the dyeing solutions were cooled down, and the dyed fibers were taken out, dewatered centrifugally and then dried at 60° C. in a drier. At this time, the fibers had shrinkages due to dyeing of 4% (Manufacturing Example 8) and 18% (Manufacturing Example 9), respectively.
• a dyeing formula at this time was as follows: for Manufacturing Examples 10, 12 and 13, a target color was light brown, which was the same as that in Manufacturing Example 5, and for Manufacturing Example 11, a target color was light gray, which was the same as that in Manufacturing Example 1. Also, the heating rate at this time was 3° C./min. starting from room temperature, and when 50° C. was reached, the dyes were added, followed by continued heating. When 70° C. (Manufacturing Example 10), 75° C. (Manufacturing Example 11), 80° C. (Manufacturing Example 12) and 85° C.
• the thus obtained fibers were cut to 32 mm and packed in an Obermeyer dyeing machine at a fiber packing density of 0.30 g/cm 3 , thus performing dyeing.
• a dyeing formula at this time was as follows: a target color was light brown, which was the same as that in Manufacturing Example 5. Also, the heating rate at this time was 3° C./min. starting from room temperature, and when 50° C. was reached, the dyes were added, followed by continued heating. When 70° C. (Manufacturing Example 14) and 80° C. (Manufacturing Example 15) were reached, the fibers were kept at these temperatures for 60 minutes.
• the dyeing solutions were cooled down, and the dyed fibers were taken out, dewatered centrifugally and then dried at 60° C. in a drier. At this time, the fibers had shrinkages due to dyeing of 6% (Manufacturing Example 14) and 20% (Manufacturing Example 15), respectively.
• the thus obtained fibers were cut to 32 mm and packed in an Obermeyer dyeing machine at a fiber packing density of 0.30 g/cm 3 , thus performing dyeing.
• a dyeing formula at this time was as follows: a target color was light gray, which was the same as that in Manufacturing Example 1. Also, the heating rate at this time was 3° C./min. starting from room temperature, and when 50° C. was reached, the dyes were added, followed by continued heating. When 70° C. (Manufacturing Example 16) and 80° C. (Manufacturing Example 17) were reached, the fibers were kept at these temperatures for 60 minutes.
• the dyeing solutions were cooled down, and the dyed fibers were taken out, dewatered centrifugally and then dried at 60° C. in a drier. At this time, the fibers had shrinkages due to dyeing of 1% (Manufacturing Example 16) and 16% (Manufacturing Example 17), respectively.
• mink-like step pile fabrics were produced similarly to Example 1.
• the thus produced mink-like pile fabrics achieved 28% to 30% dry heat shrinkages of the down hair respectively as shown in Table 1, and had clear and natural height difference and favorable hair handling.
• step pile fabrics were produced similarly to Example 1.
• the shrinkage of the down hair portion was 1% in the case of using the modacrylic shrinkable fibers obtained in Manufacturing Example 4 (Comparative Example 1), and the dry heat shrinkage of the down hair portion was 2% in the case of using the modacrylic shrinkable fibers obtained in Manufacturing Example 7 (Comparative Example 2). Neither of them achieved clear height difference.
• a chinchilla-like step pile fabric was produced similarly to Example 6.
• the thus produced chinchilla-like pile fabric achieved a 24% dry heat shrinkage of the down hair as shown in Table 1, and had clear and natural height difference and favorable hair handling.
• rabbit-like step pile fabrics were produced similarly to Example 8.
• the thus produced rabbit-like pile fabrics achieved 19% to 21% dry heat shrinkages of the down hair as shown in Table 1, and had clear and natural height difference and favorable hair handling.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Woven Fabrics (AREA)
• Artificial Filaments (AREA)
• Knitting Of Fabric (AREA)
• Coloring (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=36336539

Family Applications (1)

Country Status (4)

Cited By (3)

Families Citing this family (1)

Citations (7)

Family Cites Families (5)

• 2005
  • 2005-11-10 KR KR1020077011003A patent/KR20070084227A/ko not_active Application Discontinuation
  • 2005-11-10 US US11/667,633 patent/US20070298210A1/en not_active Abandoned
  • 2005-11-10 CN CNA2005800386773A patent/CN101057014A/zh active Pending
  • 2005-11-10 WO PCT/JP2005/020619 patent/WO2006051862A1/ja not_active Application Discontinuation

Patent Citations (9)

Also Published As

Similar Documents

Legal Events