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EP0209810B1 - Verfahren zur Herstellung von Boden- oder Wandbelag mit Risseffekt und so erzeugtes Produkt - Google Patents

Verfahren zur Herstellung von Boden- oder Wandbelag mit Risseffekt und so erzeugtes Produkt Download PDF

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Publication number
EP0209810B1
EP0209810B1 EP86109523A EP86109523A EP0209810B1 EP 0209810 B1 EP0209810 B1 EP 0209810B1 EP 86109523 A EP86109523 A EP 86109523A EP 86109523 A EP86109523 A EP 86109523A EP 0209810 B1 EP0209810 B1 EP 0209810B1
Authority
EP
European Patent Office
Prior art keywords
die
das
oder
daß
dadurch gekennzeichnet
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
Application number
EP86109523A
Other languages
English (en)
French (fr)
Other versions
EP0209810A1 (de
Inventor
Jean-François Courtoy
Daniel Marchal
René Duforest
Albert Roussel
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.)
Eurofloor SA
Original Assignee
Eurofloor SA
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
Priority claimed from LU86014A external-priority patent/LU86014A1/fr
Priority claimed from LU86088A external-priority patent/LU86088A1/fr
Application filed by Eurofloor SA filed Critical Eurofloor SA
Priority to AT86109523T priority Critical patent/ATE44559T1/de
Publication of EP0209810A1 publication Critical patent/EP0209810A1/de
Application granted granted Critical
Publication of EP0209810B1 publication Critical patent/EP0209810B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect
    • B05D5/062—Wrinkled, cracked or ancient-looking effect
    • 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
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0005—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
    • D06N7/0028—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by colour effects, e.g. craquelé, reducing gloss
    • 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.]
    • Y10T428/24471—Crackled, crazed or slit

Definitions

  • the present invention relates to a process for producing floor coverings or wall coverings, of the synthetic coverings type, with a cracked effect. It also extends to the products obtained by this process.
  • Document FR-A-2 126 658 discloses a method for applying an emulsion coating material to produce cracking patterns.
  • a lower coating synthetic material containing a mineral material having a high swelling property is deposited, this lower coating material is dried and then a cured coating material containing a silicon dioxide sol is applied.
  • the lower coating material absorbs the water contained in the hardened coating material, simultaneously causing it to contract, and also, jointly, cracks.
  • a drawback of the process lies in the fact that there are two different layers of particular composition to be used, which require intermediate drying. This process is necessarily slow and expensive.
  • Document FR-A-2 247 494 relates to a cracked film of polymer based on PVC and at least one plasticizer distributed in a homogeneous manner. It also claims a coating consisting of a conventional support coated with such a film as well as a process for the preparation thereof.
  • the process uses a two-phase system, namely polymer / plasticizer and water. However, this process does not allow sufficient control of the formation of cracks and the opening thereof. Furthermore, this process requires high amounts of water.
  • Document US-A-2 612 456 also relates to a process for the manufacture of a decorative and protective coating which has a cracked appearance in which an organosol is used comprising particles of a copolymer of organic vinyl chloride and of acetate, dispersed in a volatile organic liquid.
  • the liquid used must have a swelling effect on the polymer particles. This process is also difficult to control and makes it difficult to obtain a dense network of cracks. Furthermore, this process also requires high amounts of solvent.
  • An object of the present invention is to provide a process for the production of floor coverings or wall coverings, with a cracked effect requiring only a single layer to obtain said cracked effect.
  • Another object of the present invention is to provide a process for the production of cracked floor or wall coverings, in which the amounts of solvent or water required are significantly reduced compared to the state of the art.
  • Another object of the present invention is to provide a process for producing deep cracked floor or wall coverings, that is to say in substantially the whole mass of at least one layer of the covering.
  • the aim is to provide a new product, that is to say a new floor or wall covering having a cracked effect, of random nature.
  • the process of the invention makes it possible to achieve the aims of the invention and in particular makes it possible to produce a coating with a cracked effect, in which the cracks extend randomly, in depth, in the mass.
  • the invention also resides in the choice of the sorbent agent / solvent pair used in the particular conditions of the process of the invention.
  • the solvent does not disturb the plasticizing effect of the other additives of the synthetic material used for the manufacture of the coating according to the invention. It is obvious that a solvent which does not participate in the plasticization is preferably used, although the use of such a solvent cannot be excluded.
  • the absorbent agent is a silica or a silicate, preferably having a specific surface according to BET of between 250 and 700 m 2 / g, preferably of the order of 300 at 400 m 2 / g.
  • the coating composition advantageously comprises 0.5 to 15% by weight of sorbent agent.
  • a solvent is used whose vapor pressure is very high at the formation temperature of the synthetic film, so that the sorbent shrinks by desorption of the solvent once the film is formed, in order to " tear "forming cracks.
  • the temperature at which the solvent has a high vapor pressure, or the boiling temperature of the solvent must be close to the film-forming temperature, because, if this temperature is too high, it does not there will be no cracking, due to the fusion and the surface tension of the synthetic coating. On the other hand, if this temperature is too low, there is evaporation before the film is formed. It is, of course, necessary to ensure that the retraction force is greater than the cohesive force of the film.
  • a solvent such as the hydrocarbon fractions and in particular white spirit is used at a rate of the order of 15 to 35% by weight of the plastisol coating.
  • the temperature for forming the plastisol coating film is chosen between 110 and 160 ° C.
  • the coating can be subjected subsequently, for example at a temperature of the order of 200 ° C. for 1 minute to 2 minutes 30 seconds if it is desired to modify the initial opening of the cracks without affecting their number.
  • the gel-forming resin in the presence of water can be chosen from a wide range of commercial products.
  • a solvating agent such as ethyl glycol
  • water is particularly useful in causing the gel-forming resin to swell.
  • the additives necessary for stabilizing the aqueous dispersion are well known in the art and a large amount of commercial products are available. It will preferably be added to the preparation in addition to surface-active agents serving for the stabilization of the anti-foaming agents to facilitate the preparation of the dispersion and to be able to carry out a regular coating.
  • the preparation of the dispersion advantageously includes the presence of fillers, pigmented or not, which act in particular on the extent of the cracks or cracks observed.
  • the drying heat treatment temperature is chosen between 180 and 210 ° C.
  • the coating can subsequently be subjected, for example to a temperature of the order of 20 ° C for 1 minute to 2 minutes 30 seconds if it you want to change the initial opening of the cracks without affecting their number.
  • the support on which the plastisol coating composition containing said sorbent / solvent couple is applied or the aqueous dispersion of a dry mixture of PVC and plasticizer containing a gel-forming resin in water may consist of a conventional support which possibly already includes one or more deposits of synthetic material, possibly provided with a print.
  • a coating of plastisol for example on the coating obtained, so as to fill the cracks with a suitable material.
  • a suitable material for example, a plastisol containing up to 30% of carbon black on the product obtained or optionally an aqueous emulsion of plasticized PVC and conductive carbon black, so as to fill the cracks by a material conducting the electric current.
  • Such a coating is particularly suitable for avoiding the formation of static electricity for coatings intended for operating rooms, computer rooms, etc.
  • the use of such a composition containing carbon black makes it possible to increase to a value of the order of 10 8 ohm.cm the electrical transverse resistance of the coating obtained which is normally 10 14 ohm.cm.
  • the shape, depth and opening of the cracks can be controlled by the temperature of the heat treatment, by the choice of the sorbent / solvent couple and of the resin forming gel in water and by the quantity of solvent used. It should be noted, however, that the depth and the opening of the cracks can be markedly modified later, notably by heat treatment, unless these have been coated beforehand.
  • Aerosil 300® and of solvent are respectively 2.68% and 26.31% in the plastisol coating.
  • the coating thus obtained is applied to a conventional support having possibly already received at least one coating and / or one impression.
  • the product thus obtained is subjected to a heat treatment so as to create cracks, which advantageously consists of passing, for 2 minutes 30 seconds, at a temperature between 110 and 120 ° C, obtained by heating in particular using a forced air oven or infrared radiation or a combination of the two, for example.
  • the product obtained is then optionally subjected to an impression of a decoration, according to a process known per se.
  • the product can also be subjected to a second heat treatment which allows the opening of already formed cracks.
  • a heat treatment consists in passing, for 1 minute to 2 minutes 30 seconds, at a temperature of the order of 200 ° C.
  • the product is then passed under a rubber doctor blade which penetrates, inside the cracks, a pigmented fluid plastisol which then undergoes pre-gelification.
  • the whole is covered with a coating of PVC plastisol serving as a wear layer and the product obtained is subjected to a gelling operation, for 2 minutes 30 seconds, at a temperature of the order of 190 ° C.
  • the rate of Barosil O and white spirit in the coating is, respectively, 12.5% and 28.7%.
  • the coating thus obtained is deposited on a conventional support which is subjected to a heat treatment so as to create cracks.
  • Said heat treatment consists of a passage of 2 minutes at 110 - 120 ° C, in an oven for example.
  • the product thus obtained is then passed under a doctor blade so as to penetrate, inside the cracks, a PVC paste containing 30% carbon black.
  • a final baking heat treatment is then carried out.
  • a so-called "homogeneous" coating is obtained, the transverse electrical surface resistance of which is lowered to a value of the order of 108 ohm.cm (whereas it is 10 14 ohm.cm for PVC) and which therefore makes it possible to disperse local electrical charges.
  • Such a coating could be used in an environment with high sensitivity to local loads such as computer rooms.
  • a compact plastisol "composition is prepared according to Example 1.
  • FIGS. 3 and 6 relate to a composition as mentioned below in which the gel has been prepared beforehand, that is to say:
  • the gel consists of 63 parts of Aerosil® 300 and 637 parts of white spirit.
  • the annular pumping makes it possible to express the viscosity as a function of the speed gradient.
  • the white spirit is not preferentially adsorbed by the silica but is also distributed in the medium and therefore has a viscosity-lowering effect on the plastisol.
  • the solvent swelled the inert charge and remained there even after mixing in the final medium. It has not been used to lower the general viscosity of plastisol. It is only the heat treatment which will make it possible to desorb the solvent from the silica by causing it to shrink.
  • Example 6 aqueous dispersion.
  • a dry PVC mixture is prepared consisting of:
  • An aqueous suspension prepared in a mixer (Moltini type) consists of: This aqueous suspension is deposited with a doctor blade on a support composed of a glass veil coated with a PVC plastisol gelified on a drum and which has the following formulation:
  • This coating is dried and baked in a hot air oven between 130 and 210 ° C.
  • Example 7 aqueous dispersion
  • This suspension is scraped on a support identical to that of Example 1, dried and baked in a hot air oven under the same conditions.
  • the various aqueous suspensions can be colored in the mass by adding an adequate pigment to their formulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Building Environments (AREA)
  • Floor Finish (AREA)

Claims (17)

1. Process for the product ion of floor coverings or of wall coverings, exhibiting a cracked effect, characterized in that there are deposited on a compatible substrate
a plastisol coating composition containing a gel previously prepared from a pair constituted by a solid sorbent agent and by a solvent which causes swelling by absorption of the said solvent in and on the sorbent agent, or indeed a dispersion in water of a dry mixture of PVC and of plasticizer containing at least one resin forming a gel in water, and in that a thermal treatment for the formation of a film or for drying is then carried out at a sufficient temperature so that there takes place concomitantly an irreversible process of preliminary gelling of the coating and the shrinkage of the gel by desorption of the solvent from the sorbent agent or by evaporation of the water, respectively, in order to obtain the cracked effect, and in that the traditional operations of finishing are possibly then carried out.
2. Process according to Claim 1, characterized in that the substrate consists of a traditional substrate, which possibly includes at least one deposit of synthetic material and/or at least one imprint.
3. Process according to one of Claims 1 or 2, characterized in that the plastisol coating composition containing the sorbent/solvent pair or the dispersion in water of dry PVC and of a resin forming a gel in water is applied locally.
4. Process according to any one of the preceding claims, characterized in that the coating composition contains 0.5 to 15 % by weight of sorbant agent, preferably 2 to 13 % by weight.
5. Process according to any one of the preceding claims, characterized in that the sorbent agent is a silica or a silicate having a specific surface according to BET within the range between 250 and 700 m2/g, preferably between 300 and 400 m2g.
6. Process according to any one of the preceding claims, characterized in that the solvent used in the said pair exhibits a very high vapour pressure at the temperature of formation of the coating film.
7. Process according to any one of the preceding claims, characterized in that the coating composition contains 15 to 35 % by weight, preferably 20 to 30 % by weight, of solvent.
8. Process according to any one of the preceding claims, characterized in that the thermal treatment for the formation of the film consists of a stage at a temperature of 110 to 160°C, having a duration of 1 minute to 2 minutes 30 seconds.
9. Process according to one of Claims 1 or 2, characterized in that the resin forming a gel in the presence of water is a cellulose resin.
10. Process according to one of Claims 1, 2 or 9, characterized in that the dispersion contains a solvating agent.
11. Process according to one of Claims 1, 2, 9 or 10, characterized in that the additives required for the stabilization of the aqueous dispersion are constituted by a mixture of surfactant and antifoam agent.
12. Process according to any one of Claims 1, 2 or 9 to 11, characterized in that the thermal drying treatment consists of a stage at a temperature of 180 to 210°C.
13. Process according to any one of the preceding claims, characterized in that, after the formation of the cracks, a second thermal treatment operation intended to open the cracks is carried out.
14. Process according to claim 13, characterized in that the said second thermal treatment operation consists of a stage at a temperature of the order of 200° C, having a duration of 1 minute to 2 minutes 30 seconds.
15. Process according to any one of the preceding claims, characterized in that at least one coating is applied by means of a scraper in such a manner as to fill the cracks, such as a composition containing conductive carbon black, or a foamable paste and/or an imprint is applied in accordance with a process known per se or a final wear layer is applied to the product.
16. Process according to any one of the preceding claims, characterized in that a final firing operation is carried out at a temperature of the order of 190° C, for a period of 1 minute to 2 minutes 30 seconds.
17. Floor or wall covering, exhibiting a cracked effect, obtained in accordance with any one of the preceding claims.
EP86109523A 1985-07-22 1986-07-11 Verfahren zur Herstellung von Boden- oder Wandbelag mit Risseffekt und so erzeugtes Produkt Expired EP0209810B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86109523T ATE44559T1 (de) 1985-07-22 1986-07-11 Verfahren zur herstellung von boden- oder wandbelag mit risseffekt und so erzeugtes produkt.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
LU86014 1985-07-22
LU86014A LU86014A1 (fr) 1985-07-22 1985-07-22 Procede de production de revetements de sol ou muraux a effet craquele et produit obtenu
LU86088 1985-09-23
LU86088A LU86088A1 (fr) 1985-09-23 1985-09-23 Procede de production de revetements de sol ou muraux a effet craquele et produit obtenu

Publications (2)

Publication Number Publication Date
EP0209810A1 EP0209810A1 (de) 1987-01-28
EP0209810B1 true EP0209810B1 (de) 1989-07-12

Family

ID=26640312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109523A Expired EP0209810B1 (de) 1985-07-22 1986-07-11 Verfahren zur Herstellung von Boden- oder Wandbelag mit Risseffekt und so erzeugtes Produkt

Country Status (15)

Country Link
US (1) US4764411A (de)
EP (1) EP0209810B1 (de)
AU (1) AU583640B2 (de)
BE (1) BE905074A (de)
CA (1) CA1260329A (de)
DE (1) DE3664346D1 (de)
DK (1) DK162925C (de)
ES (1) ES2000535A6 (de)
FR (1) FR2585027B1 (de)
GR (1) GR861901B (de)
IE (1) IE57461B1 (de)
IT (1) IT1196520B (de)
NO (1) NO165690C (de)
NZ (1) NZ216844A (de)
PT (1) PT83028B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1264027A (en) * 1985-10-03 1989-12-27 John B. Jalbert Heat and pressure consolidated laminate
US4880689A (en) * 1985-10-18 1989-11-14 Formica Corporation Damage resistant decorative laminate
DE4242356A1 (de) * 1992-12-15 1994-06-16 Sandoz Ag Monomerzubereitungen für die Bauindustrie
US7862835B2 (en) * 2004-10-27 2011-01-04 Boston Scientific Scimed, Inc. Method of manufacturing a medical device having a porous coating thereon

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR530658A (fr) * 1920-08-05 1921-12-28 Clement Et Riviere Procédé d'obtention d'effets craquelés applicable à la décoration d'objets divers de formes et de matières quelconques
US2612456A (en) * 1948-07-29 1952-09-30 Ncr Co Process for applying an ornamental and protective crackle coating to a base
US2866720A (en) * 1955-10-24 1958-12-30 American Marietta Co Decorative coating and method of making same
JPS5125442B1 (de) * 1971-02-10 1976-07-31
FR2247494A1 (en) * 1973-10-11 1975-05-09 Bat Applic Revetements Plastiq Polyvinyl chloride decorative film with cracked appearance - prepd by heating layer contg plastisol and dispersed water
FR2413940A1 (fr) * 1978-01-10 1979-08-03 Renault Constitution d'un revetement de sol, notamment pour l'habitacle d'un vehicule automobile
JPS5840376A (ja) * 1981-09-03 1983-03-09 Sugita:Kk 皺模様を有する合成樹脂被膜を製品表面に形成する方法
US4605584A (en) * 1984-12-03 1986-08-12 Armstrong World Industries, Inc. Decorative materials comprising crinkled chips

Also Published As

Publication number Publication date
IT8621173A0 (it) 1986-07-18
FR2585027A1 (fr) 1987-01-23
FR2585027B1 (fr) 1988-02-26
IT1196520B (it) 1988-11-16
DK346386D0 (da) 1986-07-21
DE3664346D1 (en) 1989-08-17
GR861901B (en) 1986-11-24
EP0209810A1 (de) 1987-01-28
ES2000535A6 (es) 1988-03-01
DK162925B (da) 1991-12-30
BE905074A (fr) 1986-11-03
CA1260329A (en) 1989-09-26
PT83028B (pt) 1992-08-31
NO165690B (no) 1990-12-10
NZ216844A (en) 1989-03-29
NO862913L (no) 1987-01-23
US4764411A (en) 1988-08-16
DK162925C (da) 1992-05-25
NO165690C (no) 1991-03-20
AU583640B2 (en) 1989-05-04
AU6031486A (en) 1987-01-29
DK346386A (da) 1987-01-23
NO862913D0 (no) 1986-07-18
IE57461B1 (en) 1993-02-24
PT83028A (fr) 1986-08-01
IE861836L (en) 1987-01-22

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