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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives 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
  • 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
  • D06M15/347—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated ethers, acetals, hemiacetals, ketones or aldehydes
• • 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
  • 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
  • D06M2200/50—Modified hand or grip properties; Softening compositions
• • 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
  • Y10T428/2395—Nap type surface
• • 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

• This invention relates to a process for treating napped fabrics and more especially to a process for treating blanket fabric with a unique resinous composition that establishes and maintains the desired resilience in the napped surface and also the desired softness.
• Napped untreated blanket fabric may have a relatively high loft originally but this property will be diminished substantially through normal use of the blanket. Also, untreated blankets made of synthetic fibers will shed the napped fibers quite extensively when laundered.
• thermoplastic type resins alone be cause they render the blanket mushy and give it a lifeless clammy feel.
• a blanket having a durable high loft, a soft feel and a lively resilient characteristic is obtained for the first time.
• This heretofore unobtainable objective is made possible by treatment of the fabric with a resinous composition that contains a thermosetting, cellulose reactive component and a fiber coating thermoplastic component, along with other constituents, admixed in proper proportions. Treatment of the synthetic fiber fabrics with this type of composition also prevents the usual undesirable pilling and shedding of the synthetic fiber.
• Treatment of the fabric with the above unique composition should be carried out in a manner to effect thorough impregnation and coating of the napped fibers.
• One requirement for this result is to have the untreated napped fibers opened up and in upstanding position and to maintain them in this position during the resin treatment and the finishing operations.
• the blanket fabric is first napped on a napping drum, and thenapped fabric fe'd' over lead-in rolls covered with napping clothing to maintain the napped fibers in upright position, and then fed on an endless conveyor member, through a closed chemical treating chamber and finally through a heating chamber for drying the fabric and curing the resin impregnant and coating, as illustrated, described and claimed in the above Lemieux patent application.
• the chemical treating process of the present invention takes place in the above mentioned closed chemical treating chamber and heating chamber.
• the present application being directed to a chemical process, independently of any specific apparatus used therefor, does not require illustration or detailed explanation of the equipment, but reference to the illustrations and description in the above Lemieux application for details of one suitable form of apparatus may be made if desired.
• a chemical composition comprising the following materials may be used.
• the parts of the individual ingredients forming the composition are given by weight of solids, unless otherwise indicated.
• thermosetting resin and the glycol lubricant are mixed, and to this mixture is added the partially polymerized urea formaldehyde resin, water and urea. This mixture is stirred, and to it is added the thermoplastic copolymer. The pH of the resulting mixture is then adjusted to a pH of about 6.5 to 7 by adding the required amount of buffering agent. These. mixing steps may all be carried out at normal or room temperature.
• the partially polymerized urea formaldehyde resin may vary from approximately 5 to 15 parts; the thermoplastic copolymer may vary from approximately 15 to 20 parts; and the formaldehyde acceptor may vary from approximately 0 to 5 parts.
• the amount of water added depends upon the desired viscosity for shipping and ultimate handling of the liquid resinous composition. If necessary, a small amount, such as for example about 1% or less, of an anti-foam may be used to control foaming of the composition.
• composition may be catalysedwith normal resin catalysts, suchas amine hydrochloride, magnesium chloride, maleic acid, etc., typical formulas for which are as follows:
• Amine hydrochloride catalyst Adjust pH to 3.5-4.0 with ammonia.
• the selected resinous composition and catalyst are maintained separate during storage and shipment, and are mixed just prior to use of the composition for treatment of the napped blanket cloth in accordance with this invention.
• a fifty gallon batch of the resinous composition and catalyst is made up by mixing one hundred and twenty pounds of the liquid resinous composition, in approximately two-thirds volume of water, and adding fifteen pounds of the liquid catalyst and then bringing the total volume to fifty gallons with water.
• This final mixture is applied in the form of a fine mist or fog onto both sides of a cellulosic fiber-containing napped blanket fabric, as it passes through the above mentioned chemical treating chamber, this chamber being enclosed to maintain an atmosphere of the chemical in uniform, constant contact with the fabric, as it passes through the enclosed chamber.
• the fog or mist of treating chemical in this chamber penetrates the napped surfaces of the fabric to effect a thorough impregnation thereof with the chemical and it also forms a coating of the chemical on the napped fibers.
• the passage of the napped fabric through the chemical treating chamber above described is continuous and preferably constant and in a typical example may be at the rate of approximately 30 yards of the fabric per minute.
• the resulting wet, napped fabric is passed through a heating chamber, which is heated in a suitable manner, such as for example with a flow of hot air through the chamber, or electrical heating units properly disposed in the chamber adjacent the path of the moving fabric.
• the speed of the fabric through this heating chamber and the temperature thereof are adjusted so as to effect drying of the fabric and curing of the resin components in the above described treating composition.
• the temperature in the heating chamber is maintained at approximately 330 F., and the speed of the fabric is approximately 30 yards per minute.
• the conditions are such that the thermosetting resin component of the composition, e.g.
• the methylated dimethylol urea resin, and the partially polymerized urea formaldehyde resin will crosslink with the cellulose of the treated fabric.
• These components impart to the treated napped fabric the above described desired resilience, which the untreated fabric does not possess. This is particularly true of the methylated dimethylol urea resin component, and the partially polymerized urea formaldehyde resin component gives the fabric the desired hand.
• thermoplastic component of the resinous composition forms the important function of coating the fibers and effecting cohesion therebetween which enables the fibers to resist abrasion encountered during normal use of the blanket and to resist shedding of the nap during use and laundering of the blanket.
• the napped fabric which may be processed in accordance with the present invention may be composed of any of the textile fibers or mixtures of fibers, and the base fabric is usually a woven fabric although knitted or nonwoven fabric may be used for the napping and chemical processing treatments.
• Typical examples of fibers which may be used in the fabric are cellulosic fibers, e.g. cotton and rayon; natural fibers, such as wool; blends of cellulosic fibers with synthetic fibers, such as nylon; the acrylics, such as Orlon, Acrilan and Zefran; and polyester fibers.
• thermosetting resin component and the thermoplastic resin component which cofunction to give the desired properties in the final blanket.
• thermosetting resin component and the thermoplastic resin component which cofunction to give the desired properties in the final blanket.
• a chemically treated napped cellulosic fabric having a high loft, permanent resilience, softness of hand and resistance to abrasion and shedding of the nap during use of the fabric and laundering thereof, said fabric having a surface of resilient upstanding napped fibers which are impregnated and coated with a resinous composition consisting essentially of a thermosetting resinous component selected from the group consisting of dimethylol ethylene urea, methylated methylol melamine, methylated dimethylol urea, and dimethylol triazone and a thermoplastic resinous component selected from the group consisting of vinyl ketone/styrene copolymers and butadiene/styrene copolymers, said thermoplastic resinous component being present in an amount between approximately onethird and one-half of the amount of the thermosetting component, by weight, said resinous composition being cured and being present in sufficient amounts to form an impregnant and a coating of the fibers throughout the napped surface of said fabric.
• thermosetting resinous component is cross-linked with the cellulosic components of the blanket.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Priority Applications (10)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23572185

Family Applications (1)

Country Status (10)

Cited By (7)

Families Citing this family (3)

Citations (9)

Family Cites Families (4)

• 0
  • CH CH1357464D patent/CH1357464D/xx unknown
• 1964
  • 1964-09-21 US US397676A patent/US3288553A/en not_active Expired - Lifetime
  • 1964-10-20 FI FI642214A patent/FI42947C/fi active
  • 1964-10-23 DK DK525964AA patent/DK118455B/da unknown
  • 1964-10-26 NL NL6412457A patent/NL131977C/xx active
  • 1964-10-27 GB GB43869/64A patent/GB1048379A/en not_active Expired
  • 1964-10-30 AT AT923464A patent/AT258244B/de active
  • 1964-11-03 BE BE655203A patent/BE655203A/xx unknown
  • 1964-11-04 DE DEB79198A patent/DE1294925B/de active Pending
  • 1964-11-24 FR FR996133A patent/FR1414593A/fr not_active Expired

Patent Citations (9)

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