Classifications

• • 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
  • B29C33/00—Moulds or cores; Details thereof or accessories therefor
  • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
• • C—CHEMISTRY; METALLURGY
  • C14—SKINS; HIDES; PELTS; LEATHER
  • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
  • C14C11/00—Surface finishing of leather
  • C14C11/003—Surface finishing of leather using macromolecular compounds
• • C—CHEMISTRY; METALLURGY
  • C14—SKINS; HIDES; PELTS; LEATHER
  • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
  • C14C13/00—Manufacture of special kinds or leather, e.g. vellum
• • 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
  • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
  • D06N3/0081—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments by wave energy or particle radiation
• • 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
  • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06N3/045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyolefin or polystyrene (co-)polymers
• • 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
  • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
• • 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
  • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
  • D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
• • 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
  • D06N2205/00—Condition, form or state of the materials
  • D06N2205/02—Dispersion
  • D06N2205/023—Emulsion, aqueous dispersion, latex
• • 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
  • D06N2207/00—Treatments by energy or chemical effects
  • D06N2207/12—Treatments by energy or chemical effects by wave energy or particle radiation
  • D06N2207/123—Treatments by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation, e.g. IR, UV, actinic light, laser, X-ray, gamma-ray, microwave, radio frequency
• • 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
  • D06N2209/00—Properties of the materials
  • D06N2209/14—Properties of the materials having chemical properties
  • D06N2209/142—Hydrophobic

Definitions

• the present invention relates to a matrix for the preparation of a flat carrier, in particular a leather or a textile material, such as a nonwoven, woven or knitted fabric, connectable coating by applying a plastic dispersion on the surface of the die made of hydrophobic flexible plastic and subsequent Solidification of the liquid plastic dispersion is formed.
• a coating or dressing is initially produced separately on a substrate which has a textured surface corresponding to the grain structure of the dressing to be produced, and then connected to the substrate.
• a plastic dispersion is applied to the existing of hydrophobic material surface of the die and then allowed to solidify by supplying heat.
• the device is to have a velor or velvet-like appearance
• a die for the manufacture of this finish whose outer surface has a structure which corresponds to the velor or velvet-like structure of the finish to be produced
• This surface of the die can be formed for example by molding the visible side of an existing Nubukleders. Finishes produced in this way have the disadvantage that the fibers forming the velor effect bend over even at very low pressure and remain in this position until they are mechanically erected or brought to a different position.
• the present invention has set itself the task of creating a mold for the preparation of a coating or coating, which has a very beautiful velor- or velvety-like appearance, the velor-like surface, especially after load does not change their appearance. This is referred to as coating in connection with textile and dressing in connection with leather.
• the invention proposes that the surface of the die has a degree of gloss according to DIN 67530 at an angle of incidence of 60 ° of less than 2.2 and is provided with microscopic, ie invisible to the naked eye, cup-like depressions. After solidification of the liquid plastic dispersion which has penetrated into these suppository-like depressions, these depressions, which are not visible to the naked eye, but only become visible at high magnification, for example 1:25 or 1:50, form fine, fine particles.
• a further advantage of a coating formed with the matrix according to the invention is that a dirt which penetrates between the hairs can be removed again in a simple manner since it can not become lodged in a tangle of fibers, as is the case in known embodiments.
• plastic dispersions or liquid polymer dispersions are preferably aqueous polymer dispersions.
• the gloss level is determined by means of a commercially available reflectometer according to DIN 67530.
• a light beam emitted by a light source is directed at a certain angle of incidence onto the surface of the object whose degree of gloss is to be determined, and the intensity of the light reflected from this surface is measured. This intensity depends both on the selected angle of incidence and on the material from which the light source Surface is, in particular from the color of this surface from. In the case of a dark surface, a part of the light beam striking the surface penetrates into the material and is partially absorbed there, depending on the hue; if the surface is light, the reflection becomes larger. In addition, more light is reflected with increasing angle of incidence.
• an angle of incidence of 60 ° was chosen so that the light beam also penetrates into the well-like depressions and therefore these are also taken into account in determining the gloss.
• a matrix with a light surface for example with a surface of light gray silicone rubber or light polypropylene, a gloss level below 2.2, preferably below 1, 8, and a die with a dark surface, such as a surface of dark red silicone rubber or dark gray polypropylene , a gloss level below 1, 2, preferably below 0.7, have.
• the colorimetry of the die surface is determined according to ISO 7724 in the CIELAB system with a spectrophotometer, measuring geometry 45/0 and under 10 ° observer with normal light D 65.
• Light surface matrices have a value above 50 on the ⁇ L axis
• dark surface matrices have a value below 50 on the ⁇ L axis.
• the die consists of at least two layers, wherein the surface of the uppermost, the well-like depressions having layer is formed of a hydrophobic flexible plastic. Hydrophobic flexible plastics are chosen so that they can be applied on the one hand in aqueous dispersion and form films.
• hydrophobic flexible plastics must be selected so that the films formed can be detached from the martix according to the invention nondestructively, preferably without the use of release agents.
• Preferred examples of hydrophobic flexible plastics are therefore preferably made of polypropylene, silicone resin, silicone rubber or a fluoropolymer, which is to be understood as a polymer of fluorine-containing monomers, in particular polytetrafluoroethylene.
• the latter materials are particularly suitable for the production of the coating from a plastic dispersion and have the advantage that the solidified coating can easily be detached from the surface of the die provided with the well-like depressions.
• a carrier layer is preferably arranged, which consists of a textile material, such as a woven, knitted or fleece, or of paper.
• a layer consisting of metal which additionally serves as a heat storage in the production of the coating and promotes the solidification of the liquid plastic dispersion to form the coating or dressing.
• This layer consisting of metal may be provided instead of the carrier layer consisting of textile material or of paper or in addition to this carrier layer.
• the well-like depressions can be arranged in a carrier layer, which is coated by a layer which forms the upper side and lines the well-like depressions, consisting of hydrophobic plastic material.
• the total thickness of the die is between 0.6 mm and 4.8 mm, but may also be greater, especially if a metal layer is arranged.
• the well-like depressions in the surface of the matrix can be formed in a simple manner by a, preferably computer-controlled, laser treatment of this surface.
• these cup-like depressions may also be formed by molding from a corresponding negative mold during production of the matrix.
• the procedure is such that an intermediate form is formed by molding the surface of the carrier having the hairs, and a negative mold is produced by molding the surface of this intermediate mold, from which the surface of the die provided with the cup-like depressions is formed.
• the well-like depressions can have any desired cross-section, that is to say they can also be polygonal, for example.
• these well-like depressions have a round, for example circular or oval cross-section, through which the removal of the coating formed on the matrix is also facilitated.
• the well-like depressions have a tapered to the bottom of the same cross-section.
• hairs tapering towards the tip are formed, which facilitates removal of the contaminants present between the hairs.
• the center distance (a) of adjacent cup-like depressions is between 50 ⁇ m and 150 ⁇ m, preferably between 60 ⁇ m and 90 ⁇ m, and the depth (t) of the well-like depressions between 50 ⁇ m and 150 ⁇ m, preferably between 60 ⁇ m and 90 ⁇ m , is.
• the bottom of the well-like depressions is expediently rounded, preferably concave or convex, whereby the feel and the velor-like appearance of the formed in these well-like depressions hairs of the coating can be improved.
• the die may be plate-shaped or web-shaped, wherein in the latter case the die may have the shape of a circulating track.
• FIG. 1 shows a cross section through a die according to the invention, approximately in natural size.
• FIG. 2 shows, greatly enlarged, the detail II of FIG. 1 with the well-like depressions, and
• FIG. 3 shows a plan view in the direction of the arrow III in FIG. 2.
• the die shown in cross section in FIG. 1 has a layer 1 consisting of a hydrophobic plastic material and a carrier layer 2.
• the layer 1 is preferably made of polypropylene, silicone resin, silicone rubber or a fluoropolymer, in particular polytetrafluoroethylene and is provided on its matte surface 3 with microscopic small well-like depressions 4, which are shown greatly enlarged in Fig. 2.
• the surface 3 consists of a light material, for example light gray silicone rubber, it has a degree of gloss according to DIN 67530 at an angle of incidence of 60 ° under 2.2, if it consists of a dark material, such as dark red silicone rubber, it has a Degree of gloss according to DIN 67530 at an angle of incidence of 60 ° under 1, 2 up.
• the carrier layer 2 consists of a textile material, in particular a woven, knitted or non-woven fabric, or of paper. But it can also, instead of the carrier layer. 2 or in addition to this at the bottom, be provided a metal, not shown layer. Furthermore, the carrier layer 2 may have the well-like depressions 4, in which case the layer 1 is formed by a thin coating of the carrier layer 2 made of a hydrophobic plastic material with which the well-like depressions 4 are also lined. In any case, both the surface 3 of the die and the walls of the well-like depressions 4 are dull.
• the well-like depressions 4 have a tapering to the bottom 5 in cross-section.
• the depth (t) of the well-like depressions 4 is different and is preferably between 60 ⁇ m and 90 ⁇ m.
• Fig. 2 further different ways of forming the bottom 5 of the well-like depressions 4 are shown. At 5a, this bottom is convex, concave at 5b, graded at 5c and flat at 5d.
• the walls of the well-like depressions 4 can also be provided with longitudinal grooves or with drilled grooves
• the well-like depressions 4 have a circular cross-section with a circular diameter of up to 25 microns. But you can also have any other arbitrary cross section, in particular an oval or a polygonal cross section.
• the center distance a of adjacent cup-like depressions is generally different and is preferably between 50 .mu.m and 150 .mu.m.
• the cup-like depressions 4 are arranged irregularly on the surface 3 in the illustrated embodiment, but may also be provided in the form of a regular pattern.
• the matrix itself may be formed as a plate or as a preferably circumferential path.
• the procedure is such that first a liquid plastic material is applied to the surface provided with the well-like depressions 4 3 and allowed to solidify, whereupon the coating thus formed is removed from the die. Due to the arrangement of the cup-like depressions 4, fine, individually projecting and mutually spaced-apart hairs, which give the coating a nubuck or velvet-like appearance, are formed on the coating or dressing.
• Another object of the present invention is thus a process for producing a coating of textile material using a die according to the invention.
• a further subject is therefore also a process for producing a film-like finish of leather using a die according to the invention.
• Coated textile materials and dressed leather according to the invention have a beautiful velor-like or nubuck or velvet-like appearance.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Textile Engineering (AREA)
• General Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Toxicology (AREA)
• Dispersion Chemistry (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Laminated Bodies (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)
• Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
• Treatment And Processing Of Natural Fur Or Leather (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Priority Applications (6)

Applications Claiming Priority (4)

Publications (1)

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Family Applications (1)

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Cited By (2)

Families Citing this family (6)

Citations (3)

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• 2006
  • 2006-03-03 AR ARP060100814A patent/AR056935A1/es unknown
  • 2006-03-03 AT AT06708630T patent/ATE457365T1/de active
  • 2006-03-03 DE DE502006006105T patent/DE502006006105D1/de active Active
  • 2006-03-03 JP JP2007557519A patent/JP4712051B2/ja not_active Expired - Fee Related
  • 2006-03-03 WO PCT/EP2006/060441 patent/WO2006092440A1/de not_active Ceased
  • 2006-03-03 ES ES06708630T patent/ES2339476T3/es active Active
  • 2006-03-03 EP EP06708630A patent/EP1859066B1/de active Active
  • 2006-03-03 US US11/816,782 patent/US7758012B2/en active Active
  • 2006-03-03 CN CN2006800070332A patent/CN101133168B/zh active Active

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