US3723161A - Process and apparatus for the production of synthetic leather - Google Patents

Process and apparatus for the production of synthetic leather Download PDF

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Publication number
US3723161A
US3723161A US00059877A US3723161DA US3723161A US 3723161 A US3723161 A US 3723161A US 00059877 A US00059877 A US 00059877A US 3723161D A US3723161D A US 3723161DA US 3723161 A US3723161 A US 3723161A
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Prior art keywords
web
dense
embossing
synthetic
shrinking
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US00059877A
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English (en)
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H Fleissner
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Vepa AG
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Vepa AG
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/384—Cutting-out; Stamping-out using rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/06—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using vacuum drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/0064—Fixing of chemicals, e.g. dyestuffs, on textile materials by a fixing bath
    • 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
    • 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
    • D06C29/00—Finishing or dressing, of textile fabrics, not provided for in the preceding groups
    • 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
    • D06N3/0015—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 fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0025—Rubber threads; Elastomeric fibres; Stretchable, bulked or crimped fibres; Retractable, crimpable fibres; Shrinking or stretching of fibres during manufacture; Obliquely threaded fabrics
    • D06N3/0031—Retractable fibres; Shrinking of fibres during manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0756—Characteristics of the incoming material, e.g. creped, embossed, corrugated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0782—Layout of the complete embossing machine, of the embossing line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0784—Auxiliary operations
    • 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
    • D06C2700/00—Finishing or decoration of textile materials, except for bleaching, dyeing, printing, mercerising, washing or fulling
    • D06C2700/31—Methods for making patterns on fabrics, e.g. by application of powder dye, moiréing, embossing
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/904—Artificial leather
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S68/00—Textiles: fluid treating apparatus
    • Y10S68/903—Perforated drum and continuous textile feed and discharge

Definitions

  • PATENTEDmzTms SHEET 10F 2 Jnveniow HEINZ FLE ⁇ SSNER BY Graig, Qfltonelli, Stewart W ATTORNEYS PROCESS AND APPARATUS FOR THE PRODUCTION OF SYNTHETIC LEATHER BACKGROUND OF THE INVENTION particularly for the production of synthetic leather, i.e. 0
  • the filling or: bonding agents are applied to the textile material lengths in the form of aqueous solutions or dispersions and the filling or bonding agents used are usually a thermosensibilized product such as a synthetic latex.
  • the textile material length onto which the bonding agent is applied is subsequently heated-up, contact-free to a temperature at which the bonding agent coagulates, mechanically dehydrated by means of squeezing units or suction devices, and finally dried.
  • the bonding agent is cured or vulcanized.
  • knit cloths or fabrics are used as carriers for synthetic leather, they are usually coated with a plastic material. It has been previously suggested to pour the coating mass on or to apply it in the form of a thin foil.
  • An object of the present invention is to provide a means for producing a synthetic or artificial leather which has the same properties as real leather and can be manufactured in a simple, quick and economical way.
  • Another object of the present invention is to simplify the production line by eliminated certain machine units in the production of the synthetic leather.
  • Still another object of the present invention is to provide a means for carefully handling material lengths which are difficult to emboss or which require a very sharply-designed pattern.
  • a further object of the present invention is to simultaneously effect the coagulation of the bonding agent and the shrinking of the web of textile material.
  • the carrier cloth or fabric helps to iniprove the flexibility of this kind of material substantially and also cut down its tendency to break. It is therefore suggested, in accordance with the present invention, to use a material which consists of highlyshrinkable fibers which has been subjected to a shrinking process.
  • a material which consists of highlyshrinkable fibers which has been subjected to a shrinking process.
  • the shrinking fibers used can be polyester for example, polyethylene terephthalate or polyamide fibers, for example, polyhexamethylene adipamide, and it is also possible to use polypropylene fibers which shrink considerably when being subjected to a thermal process.
  • melting fibers can be, for example, polypropylene or some other similar type fiber.
  • the carrier cloth or fabric can for instance consist of approximately 20 to 50 percent shrinking fibers and approximately ID to 15 percent melting fibers.
  • the remaining fibers can be those which are won from natural substances, such as rayon staple fibers. It is advantageous to add a certain amount of natural fibers because they improve the water absorption capacity of the synthetic leater and the similarity of synthetic leather to natural leather is thus increased.
  • the intimate connection of the surface coating and the carrier fabric is usually obtained by means of a heating process in which the components of the carrier fabric, according to the present invention, are subjected to uncontrollable changes, it has been found advantageous to shrink the carrier cloth or fabric before the coating mass is applied and to subsequently spread the coating on or apply it in some other way.
  • Shrinking is effected by means of heat. If polyamide or polyester shrinking fibers are used, it is expedient to heat the carrier fabric in a water containing bowl to about to C., at which temperature the shrinking process will take place. If polypropylene shrinking fibers are used, shrinking is effected by means of hot air or superheated steam.
  • processing temperatures may range between 150 and C.
  • synthetic leather production can be simplified still further.
  • Still another feature of the present invention which is even more advantageous and even more cost-saving is when coagulation of the bonding agent and shrinking of the web is effected simultaneously, in a hot shrinking bowl.
  • the unshrunk web which is already soaked with the bonding agent liquor is fed into the shrinking bowl where the bonding agent coagulates under the influence of heat and the web shrinks at the same time.
  • the carrier fabric is then provided with a coating and a leather-grain surface structure.
  • the conventional embossing units consist of solid rollers or rollers with very thick jackets which are usually made of steel.
  • the roller jackets are provided with the embossing pattern.
  • the material passes the embossing unit with the side which is to be embossed lying on the surface of the embossing roller and is pressed against this embossing roller by another roller.
  • lt is a known method to produce the embossing pattern either by a cold molding process or by embossing the plastic coating mass which is subsequently hardened.
  • Equally well-known is the method of dehydrating paper and textile material lengths by means of providing at least the bottom roller with a liquid-permeable jacket and possibly by designing this bottom roller as a suction roller.
  • the squeezed or drawn-off liquor can be removed through the pores or holes of the roller. It is also known to guide the material on the suction roller by means of an adjoined perforated belt so that it is held and conveyed between the roller and this belt during the dehydration process.
  • lt is a further feature of the present invention to provide a means for careful handling material lengths which are difficult to emboss or which require a very sharply-designed pattern.
  • this task is solved in an effective way by pressing the material against an air-permeable embossing roller by means of a suction draft or a vacuum created in the roller.
  • the material is not only tangent to the embossing roller, as in the conventional embossing processes, but adheres to it for a certain time because of the suction draft.
  • the embossing pattern is thus produced by mechanical pressure and the intimate contact of material and roller safeguarded by the suction draft. Making use of the suction draft is especially advantageous with material lengths which are air-permeable even after having been coated and embossed, e.g. with synthetic leather.
  • the coating is applied in the form of a thick foil, whether it is spread on or whether it is produced by means of a precipitation process in a treatment bowl.
  • very elastic material lengths or material lengths which are difficult to emboss it can be advantageous to guide the material length between a tensioned perforated belt and the embossing roller which is subject to a suction draft so that the material is pressed against the roller by the perforated belt.
  • the coating is air-permeable it is desirable to draw air, steam or a liquid through the material length during the embossing process.
  • the molecules of an already applied polyurethane coating are to be cross-linked in a liquid
  • This liquid can be a 60 percent DMF solution.
  • the coating is not too thick, the air-permeability is produced or at least improved by means of the suction draft.
  • embossing roller it is expedient to design the embossing roller as a hollow body and to use an airor liquid-permeable construction material such as sintering metal, fibrous metal or the like or else to provide it with small boreholes in order to make it air-permeable.
  • This embossing roller is then provided with the embossing pattern, e.g. with an engraving.
  • the embossing unit comprising such an airpermeable embossing roller must also be equipped with an essentially well-known fan or pump assembly for producing the suction draft or vacuum inside the embossing roller.
  • these embossing rollers can be equipped with baffle plates which are arranged inside or outside of the roller, at that roller section which is not covered by the material length being treated.
  • the baffle plates screen this section from the suction draft.
  • Guide rollers are adjoined to the embossing roller, the suitable arrangement of which ensures the required looping of the material length around the embossing roller.
  • at least one, and preferably the first of these guide rollers is equipped with a pressure device which presses the guide roller against the embossing roller or against the material length adhering to the roller surface. It has already been mentioned that, depending on the type of coating used, it is expedient to heat or cool the embossing roller.
  • the apparatus of the present invention consists of the following individual machines:
  • a washing machine with preferably at least one perforated wash bowl which operates on the autoflow principle
  • a dryer preferably a perforated drum dryer.
  • a drying duct can be arranged in front of the liquid bowl (see item b above). This duct, through which the fiber web is guided contact-free, ensures the coagulation of the bonding agent which has been applied in the padder.
  • the evaporation water film eliminates any drying-out of the material surface while still ensuring the heating up of the entire material layer to the required temperature.
  • the material then reaches the discharge end of the drying duct, it is thoroughly heated up to the coagulation temperature of the bonding agent but has not absorbed any superfluous amount of moisture.
  • the padder can be of any desired design. However, it is advantageous to use a padder which contains a submerged squeezing unit for removing the air from the unshrunk fiber web, thus improving the liquor absorbing capacity of the material. It is further advantageous to arrange a material scray in front of the padder in order to ensure the uninterrupted material supply to the padder even in the case where the preceding batching unit has been completely emptied.
  • the material scray is preferably equipped with a pair of driven draw-off rollers which guide the unshrunk and therefore very delicate web without any tension into the material scray.
  • the batching unit too, should be driven to ensure the absolutely tension-free transportation of the material.
  • FIG. I shows a device comprising a pre-drying duct for treating the basic material of synthetic leather
  • FIG. 2 shows a device according to FIG. 1, however, without a drying duct
  • FIG. 3 is a cross section of a perforated embossing roller which is subject to a suction draft
  • FIG. 4 is a longitudinal section of the roller according to FIG. 3.
  • the unshrunk fiber web 2 is fed into a subsequent padder 5 which is filled with a bonding agent, such as a thermosensibilized latex or a thermosensibilized polyurethane dispersion.
  • a bonding agent such as a thermosensibilized latex or a thermosensibilized polyurethane dispersion.
  • a guide roller 6 and a pressure roller 7, the latter of which removes the air from the material It is advantageous to feed an unshrunk web into the padder because such a web features a better absorbing capacity than a shrunk web. A denser and more stable final web is thus produced.
  • the web is led upwards, contactfree through a drying duct 8 (only schematically shown in the drawing).
  • the material is heated up to about 40 to 50C., at which temperature the bonding agent coagulates.
  • the fiber web which is overfed in width by pleating rollers 10 and overfed in length by a pair of feed rollers 11 which follow a compensating section 12, is then heated up, shock-like, in a bowl. In this process, the web shrinks in both width and length.
  • the basic material for the production of synthetic leather needs only to be washed in a washing machine 13 and dried in a dryer 14. It can be washed either in a perforated drum wash bowl 15, operating on the autoflow principle or in a washing machine which comprises several pairs of squeeze rollers 16 and an intermediate washing agent spraying unit 17. Also both the wash bowl and washing machine can be utilized.
  • FIG. 2 shows a device which is very similar to that shown in FIG. 1, the difference being that the predrying duct is not utilized. in this case it is preferable to add coagulating auxiliaries such as ammonium salts to the liquor in the shrinking bowl 9. This ensures the complete coagulation of the bonding agent which has previously been applied in the padder while the web shrinks at the same time.
  • coagulating auxiliaries such as ammonium salts
  • FIGS. 3 and 4 show an embosiment of this embossing unit.
  • the material length 2 is guided over a roller 20 to an embossing roller 21.
  • the roller 20 serves as a pressure roller which presses the material length 2 against the embossing roller 21.
  • This embossing roller 21 is subject to a suction draft which draws the material length tightly onto the surface of roller 21.
  • the section of the embossing roller which is not covered by the material length is screened off from the suction draft by a stationary baffle plate 23.
  • Another roller 24 serves as an outlet roller.
  • FIG. 4 shows that a fan 25 is adjoined to the embossing roller 21, at one of the roller front sides, said fan producing a high negative pressure or suction draft of, for example, 100 mm. water gauge, within the embossing roller.
  • the baffle plate 23 is fitted to a stationary axis 26 on which also the embossing roller 21 is supported.
  • the embossing roller can be connected with a drive assembly (not shown) by means of a hollow shaft 27.
  • the natural fibers may in-. clude, for example, cotton, wool, cellulose, regenerated cellulose, etc.
  • the synthetic fibers may comprise polyamides, e.g. nylon which is the reaction product of adipic acid and hexamethylenediamine, polyolefins, e.g., polypropylene, etc., polyesters e.g., dacron which is made from methyl terephthalate and ethylene glycol, vinyl polymers, e.g., polymethyl methacrylate, rayon and similar materials.
  • the method and apparatus of the present invention is also applicable to blends of the above-mentioned textile materials.
  • a method for the production of a textile material length made of knit cloths or fabrics containing filling or bonding agents for use in the production of synthetic leather which comprises the steps of impregnating an unshrunk fiber web containing highly shrinkable synthetic fibers with a coagulatable bonding agent,
  • a method for the production of a textile material length made of knit cloths or fabric containing filling or bonding agents for use in the production of synthetic leather which comprises the steps of impregnating an unshrunk fiber web containing highly shrinkable synthetic fibers with a coagulatable bonding agent, overfeeding said web in both its length and its width to a shrinking and coagulating zone where said web is heated, shock-like, to a temperature sufficient to shrink the web in both its length and its width and to provide a very dense carrier fabric and at the same time to coagulate the bonding agent, washing the dense web and finally drying said dense web by drawing a heating drying medium therethrough.
  • the unshrunk fiber web contains a mixture of synthetic melting fibers and the synthetic shrinking fibers.
  • the unshrunk fiber web contains about 20 to percent of the synthetic shrinking fibers, and about 10 to 15 percent synthetic melting fibers, the substantial balance being natural fibers.
  • the unshrunk fiber web contains a mixture of synthetic melting fibers and the synthetic shrinking fibers.
  • the unshrunk fiber web contains about 20 to 50 percent of the synthetic shrinking fibers, and about 10 to percent synthetic melting fibers, the substantial balance being natural fibers.
  • a method for the production of a textile material length made of knit cloths or fabrics containing filling or bonding agents for use in the production of synthetic leather which comprises the steps of impregnating an unshrunk fiber web with a bonding agent, conveying said web contact-free through a drying zone where said web is heated to a temperature sufficient to coagulate the bonding agent, overfeeding said web in both its length and its width to a shrinking zone wherein the web is heated, shock-like, to a temperature sufficient to shrink the web in both its length and its width, washing the web, drying said web by drawing a heated drying medium therethrough and thereafter embossing the web by conveying the web over an embossing surface,
  • said web being held to said surface by a suction draft which is drawn through the web and a coating being applied to the web during the embossing step.
  • a method for the production ofa textile material length made of knit cloths or fabrics containing filling or bonding agents for use in the production of synthetic leather which comprises the steps of impregnating an unshrunk fiber web with a bonding agent, overfeeding said web in both its length and its width to a shrinking and coagulating zone where the web is heated, shocklike, to a temperature sufficient to shrink the web in both its length and its width and at the same time to coagulate the bonding agent, washing the web, drying said web by drawing a heated drying medium therethrough, and embossing the web by conveying the web over an embossing surface, said web being held to said surface by a suction draft which is drawn through the web and a coating being applied to the web during the embossing step.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
US00059877A 1969-07-31 1970-07-31 Process and apparatus for the production of synthetic leather Expired - Lifetime US3723161A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19691938966 DE1938966A1 (de) 1969-07-31 1969-07-31 Verfahren und Vorrichtung zum Praegen eines Musters in eine Warenbahn
DE1940954A DE1940954C3 (de) 1969-07-31 1969-08-12 Verfahren zum Herstellen von Kunstleder «
DE19691955653 DE1955653B2 (de) 1969-02-06 1969-11-05 Vorrichtung zum erhitzen von mit thermosensibilisierten bindemitteln impraegnierten textilbahnen
DE19702009662 DE2009662A1 (en, 2012) 1969-07-31 1970-03-02

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US3723161A true US3723161A (en) 1973-03-27

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US00059877A Expired - Lifetime US3723161A (en) 1969-07-31 1970-07-31 Process and apparatus for the production of synthetic leather

Country Status (5)

Country Link
US (1) US3723161A (en, 2012)
CH (2) CH552703A (en, 2012)
DE (3) DE1938966A1 (en, 2012)
FR (1) FR2054661B2 (en, 2012)
GB (1) GB1312969A (en, 2012)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165556A (en) * 1974-02-08 1979-08-28 Kanebo, Ltd. Method for manufacturing suede-like artificial leathers
US6634192B2 (en) * 2001-02-12 2003-10-21 Pti Advanced Filtration, Inc. System and method for flushing a membrane web using a vacuum roller
US20080095972A1 (en) * 2004-06-17 2008-04-24 Kuraray Co. Ltd. Process for Producing Intertwined Ultrafine Filament Sheet
US20090038176A1 (en) * 2005-04-13 2009-02-12 Alfred Dotzler Multistage continuous dryer, especially for plate-shaped products
CN105312200A (zh) * 2015-12-10 2016-02-10 无锡爱德旺斯科技有限公司 一种隔绝张力的密集辊安装结构
US10570542B2 (en) * 2015-09-11 2020-02-25 Teresa Catallo Apparatus and method for pre-shrinking a wet fabric prior to drying
IT201800009872A1 (it) * 2018-10-29 2020-04-29 Montrade Spa Rullo con mezzi di distacco
US20210262135A1 (en) * 2020-02-24 2021-08-26 James Catallo Apparatus and method for pre-shrinking a wet fabric prior to drying

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US4274182A (en) * 1978-07-10 1981-06-23 Milliken Research Corporation Apparatus for producing a simulated stria fabric
CN102747577A (zh) * 2011-04-20 2012-10-24 江苏国信合成革有限公司 真空吸纹设备
CN108729241A (zh) * 2018-06-06 2018-11-02 山东同大海岛新材料股份有限公司 一种水性超纤湿法含浸生产成套设备

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US3102006A (en) * 1958-11-14 1963-08-27 Samcoe Holding Corp Method and apparatus for treating web materials
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US4165556A (en) * 1974-02-08 1979-08-28 Kanebo, Ltd. Method for manufacturing suede-like artificial leathers
US6634192B2 (en) * 2001-02-12 2003-10-21 Pti Advanced Filtration, Inc. System and method for flushing a membrane web using a vacuum roller
US20080095972A1 (en) * 2004-06-17 2008-04-24 Kuraray Co. Ltd. Process for Producing Intertwined Ultrafine Filament Sheet
US8178184B2 (en) * 2004-06-17 2012-05-15 Kuraray Co., Ltd. Process for producing intertwined ultrafine filament sheet
US20090038176A1 (en) * 2005-04-13 2009-02-12 Alfred Dotzler Multistage continuous dryer, especially for plate-shaped products
US10570542B2 (en) * 2015-09-11 2020-02-25 Teresa Catallo Apparatus and method for pre-shrinking a wet fabric prior to drying
CN105312200A (zh) * 2015-12-10 2016-02-10 无锡爱德旺斯科技有限公司 一种隔绝张力的密集辊安装结构
IT201800009872A1 (it) * 2018-10-29 2020-04-29 Montrade Spa Rullo con mezzi di distacco
US20210262135A1 (en) * 2020-02-24 2021-08-26 James Catallo Apparatus and method for pre-shrinking a wet fabric prior to drying

Also Published As

Publication number Publication date
DE1940954C3 (de) 1978-05-24
FR2054661A2 (en, 2012) 1971-04-23
DE1940954A1 (de) 1971-02-25
CH552703A (en, 2012) 1974-08-15
DE2009662A1 (en, 2012) 1971-09-23
GB1312969A (en) 1973-04-11
DE1940954B2 (de) 1977-09-22
CH1114570A4 (en, 2012) 1974-02-15
DE1938966A1 (de) 1971-04-08
FR2054661B2 (en, 2012) 1975-03-21

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