US3822174A - Imitation leather material - Google Patents

Imitation leather material Download PDF

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Publication number
US3822174A
US3822174A US00236058A US23605872A US3822174A US 3822174 A US3822174 A US 3822174A US 00236058 A US00236058 A US 00236058A US 23605872 A US23605872 A US 23605872A US 3822174 A US3822174 A US 3822174A
Authority
US
United States
Prior art keywords
flock
imitation leather
layer
binding agent
textile
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.)
Expired - Lifetime
Application number
US00236058A
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English (en)
Inventor
J Hefele
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.)
KUFNER TEXTILWERKE KG
KUFNER TEXTILWERKE KG DT
Original Assignee
KUFNER TEXTILWERKE KG
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 KUFNER TEXTILWERKE KG filed Critical KUFNER TEXTILWERKE KG
Application granted granted Critical
Publication of US3822174A publication Critical patent/US3822174A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using flocked webs or pile fabrics upon which a resin is applied; Teasing, raising web before resin application
    • 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
    • Y10T428/23943—Flock 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24438—Artificial wood or leather grain 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • Y10T428/2907—Staple length fiber with coating or impregnation
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2139—Coating or impregnation specified as porous or permeable to a specific substance [e.g., water vapor, air, etc.]
    • 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.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2484—Coating or impregnation is water absorbency-increasing or hydrophilicity-increasing or hydrophilicity-imparting

Definitions

  • the material of this invention comprises at least one layer of a textile sheet material each sandwiched between two layers of fibrous flock permeated with a binding agent, the textile sheet material also being permeated by a binding agent and the flock layers being held together by a flock binder material.
  • This invention relates to imitation leather materials made from flocked textile sheet materials and binding agents.
  • the object of the present invention is to provide an imitation leather material having improved porosity and capacity to absorb moisture.
  • a porous, imitation leather material which comprises at least one layer of a textile sheet material each sandwiched between two layers of fibrous flock permeated with a binding agent, the textile sheet material also being permeated by a binding agent and the flock layers being held together by a flock binder material.
  • a preferred imitation leather according to this invention has a single textile sheet sandwiched between two flock layers.
  • the flock fibres are suitably less than 2 mm. long, preferably less than 1 mm. long. While the preferred textile material is woven or knitted, any other suitable textile material such as non-woven or stretch-bonded material may be used.
  • the textile material is preferably formed of synthetic fibres such as polyamide, polyester or polyacrylic fibres.
  • synthetic fibres such as polyamide, polyester or polyacrylic fibres.
  • continuous filaments with a fibre size of 1.0 to 6.0 denier are worked into single or double knitted material on raschel knitting machines.
  • the imitation leather may consist of several layers of flock and several layers of textile material.
  • three layers of flock may have sandwiched between them two layers of textile material in the sequence: flock layer-textile layer-flock layer-textile layer-flock layer.
  • the imitation leather may be prepared, for example, in the following manner:
  • a thin layer of a polyurethane-forming mixture of prepolymerised polyurethane having terminal hydroxyl groups, a tri-isocyanate and an accelerator dissolved in up to about 10% trichlorethylene is applied by painting or brushing on a smooth or patterned substrate to which polyurethane does not adhere, such as a siliconised paper. Wool flock 0.5 mm. in length is applied electrostatically to this painted-on layer serving as flock binder with the assistance of a beater to assist penetration of the flock into the binder. The excess flock is then sucked off but the adhering flock is pressed on, dried and covered with a thickly painted-on polyurethane-forming mixture as binding agent.
  • a sheet of single closely woven or knitted polyamide filaments having a weight of about g. per square meter is embedded in this second painted-on application penetrating the layer of flock and is tightly pressed onto the covered substrate.
  • the laminated woven material is covered with a painted-on third layer of a polyurethane-forming mixture.
  • a dense layer of flock is applied to this layer by electrostatic means with the help of a heater and the excess flock is sucked off. The flock is again pressed on and, after evaporating the solvent, the last layer of binding agent is painted on this layer of flock.
  • any residual solvent is evaporated.
  • the imitation leather is now stripped 01f from the substrate and on one side has a mirror image of the texture or smoothness of the substrate surface but is permeated with numerous capillaries.
  • the other side of the imitation leather has the appearance of suede and also has a particularly high number of capillaries.
  • the imitation leather By adding pigment or dye to the binding agent and by dying the fibrous flock and the textile material, the imitation leather can be rendered in any desired colour.
  • the imitation leather consists of about 180 grm. of flock, grm. of binder and 75 grm. of woven or knitted material per sq. meter and has a thickness of about 0.7- 0.8 mm.
  • the degree of absorptivity of the imitation leather can be increased.
  • Such impregnated imitation leather having a rayon flock in its flock layer readily absorbs drops of water on its suede side in a few seconds and is dry to the touch after absorbing the water.
  • the ability to absorb moisture is about three times as high as with previously known imitation leather and reaches about 20% in an atmosphere substantially saturated with water vapour.
  • the imitation leather is particularly suitable as an inner lining for shoes.
  • the imitation leather may also be used as a synthetic uppers material. Other possible uses are for upholstery, bags and luggage.
  • the imitation leather material comprises a knitted material 4 formed of synthetic fibres sandwiched between two slightly compressed flock layers 1 and 2 permeated by a binding agent 3. Another binding agent 5 permeates textile layer 4.
  • a porous imitation leather material which comprises a layer of textile sheet material sandwiched between two layers of fibrous flock permeated with a binding agent, the textile sheet also being permeated by a binding agent and the flock materials being held together by a flock binder material, the improvements which consist in the textile sheet material being a material knitted from a synthetic fiber and one surface of the imitation leather being smooth or textured and permeated by capillaries and the other being of suede-like appearance and permeated by capillaries.
  • a material according to Claim 1 wherein the flock fibres are less than 2 mm. in length, preferably less than 1 mm.
  • a material according to Claim 1 wherein the fibrous flock includes at least one fibrous material selected from the group consisting of natural cellulose fibres, regenerated cellulose fibres, wool fibres and collagen fibres.
  • a material according to Claim 1 wherein the binding agent is selected from the group consisting of polyurethanes, polymethacrylates and acrylonitrile-butadienestyrene copolymers.
  • a method of forming a porous imitation leather material which comprises the steps of:
  • the fibrous flock includes at least one fibrous material selected from the group consisting of natural cellulose fibres, regenerated cellulose fibres, wool fibres and collagen fibres.
  • binding agent is selected from the group consisting of polyurethanes, polymethacrylates and acrylonitrile-butadienestyrene copolymers.
  • a method according to Claim 7 which comprises the further step of impregnating the porous imitation leather with a watery liquor containing a water soluble polyamide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US00236058A 1971-03-22 1972-03-20 Imitation leather material Expired - Lifetime US3822174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2113790A DE2113790C3 (de) 1971-03-22 1971-03-22 Verfahren zur Herstellung von atmungsaktivem Kunstleder

Publications (1)

Publication Number Publication Date
US3822174A true US3822174A (en) 1974-07-02

Family

ID=5802380

Family Applications (1)

Application Number Title Priority Date Filing Date
US00236058A Expired - Lifetime US3822174A (en) 1971-03-22 1972-03-20 Imitation leather material

Country Status (4)

Country Link
US (1) US3822174A (it)
DE (1) DE2113790C3 (it)
FR (1) FR2130103B1 (it)
IT (1) IT950271B (it)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961116A (en) * 1973-04-13 1976-06-01 United Merchants And Manufacturers, Inc. Novel flocked fabric
US3973067A (en) * 1971-05-18 1976-08-03 The Kendall Company Short-fibered nonwoven fabrics
DE3313681A1 (de) * 1983-04-15 1984-10-25 Konrad Hornschuch Ag, 7119 Weissbach Textilverbundstoff, verfahren zu seiner herstellung und dessen verwendung
US20050031698A1 (en) * 2001-08-30 2005-02-10 Shinichi Sotome Materials sustainedly releasing drug in vivo

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887400A (en) * 1957-12-20 1959-05-19 United Shoe Machinery Corp Solvent activatable stiffener material
GB1159809A (en) * 1966-05-19 1969-07-30 Smith & Newphew Plastics Ltd Improvements in and relating to Flock Materials.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973067A (en) * 1971-05-18 1976-08-03 The Kendall Company Short-fibered nonwoven fabrics
US3961116A (en) * 1973-04-13 1976-06-01 United Merchants And Manufacturers, Inc. Novel flocked fabric
DE3313681A1 (de) * 1983-04-15 1984-10-25 Konrad Hornschuch Ag, 7119 Weissbach Textilverbundstoff, verfahren zu seiner herstellung und dessen verwendung
US20050031698A1 (en) * 2001-08-30 2005-02-10 Shinichi Sotome Materials sustainedly releasing drug in vivo

Also Published As

Publication number Publication date
IT950271B (it) 1973-06-20
DE2113790A1 (de) 1972-09-28
DE2113790C3 (de) 1978-09-28
DE2113790B2 (de) 1975-11-20
FR2130103A1 (it) 1972-11-03
FR2130103B1 (it) 1976-03-05

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