EP3056264B1 - Procédé de teinture et machine de coloration - Google Patents

Procédé de teinture et machine de coloration Download PDF

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Publication number
EP3056264B1
EP3056264B1 EP15155116.5A EP15155116A EP3056264B1 EP 3056264 B1 EP3056264 B1 EP 3056264B1 EP 15155116 A EP15155116 A EP 15155116A EP 3056264 B1 EP3056264 B1 EP 3056264B1
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Prior art keywords
paint
paste
base
tinting
complementary
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Active
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EP15155116.5A
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German (de)
English (en)
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EP3056264A1 (fr
Inventor
Salih Zeki Kurt
Özlem Caglayan Elmaci
Tolga Ustamehmetoglu
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Betek Boya Ve Kimya Sanayi AS
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Betek Boya Ve Kimya Sanayi AS
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Priority to EP15155116.5A priority Critical patent/EP3056264B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/84—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
    • B01F33/846—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins using stored recipes for determining the composition of the mixture to be produced, i.e. for determining the amounts of the basic components to be dispensed from the component receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/30—Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel

Definitions

  • the present invention relates to a tinting method and tinting machine for preparation of ready-to-use paint mixtures.
  • 'Tinting' refers to automatic preparation of a paint having a selected color (e.g. a color having a designated symbol/number, and selected from a colors list prepared by a commercial paint company). Said preparation is mainly performed by entering a designated symbol/number referring to said selected color to a tinting machine (usually operated using a computer); then the tinting machine introduces pre-determined or calculated amounts of several liquid constituents into a paint container (e.g. a paint can) automatically and the liquid constituents in the container are mixed; thus a paint mixture is obtained automatically.
  • a paint container e.g. a paint can
  • Commonly regarded properties of a paint mixture include pH, density (unit of which is e.g. g/mL), gloss, hiding power (unit of which is e.g.
  • a paint mixture prepared for a symbol/number selected from a list shall exhibit properties around expected values. For instance, color of two paint samples having same symbol/number/product code (i.e. two samples obtained from two individual preparations of same paint product), from several paint cans which are prepared on different days or using different tinting machines, should not be perceived (e.g. by consumer) considerably different from each other.
  • the difference between two colors is quantified as 'delta E' (dE). Color differences with dE values lower than 1 are considered as just noticeable, or barely noticeable or practically not noticeable, thus such dE values for two individual paint samples are required to be below 1.
  • Tinting machines and methods in state of the art provide preparation of ready-to-sell paint mixtures in containers (e.g sealable paint cans).
  • containers e.g sealable paint cans.
  • a customer orders a can of paint with color selected from a list where different colors are listed in respective symbols/numbers/product codes, and the customer decides also the size of the container, e.g. a sealable paint container for containing up to a maximum 15 liters paint.
  • an operator enters the color selection and size to a tinting machine usually over a digital interface or a computer program interface.
  • the tinting machine automatically loads a constant amount of a base into the can. Said constant amount is pre-programmed into the machine for each can size selection, such that total volume of a paint mixture does not exceed the capacity of the can.
  • one or more pigment pastes can be added into the can for obtainment of the selected color upon mixing the base and pigment paste(s).
  • the added amount(s) of the pigment paste(s) are calculated beforehand and pre-programmed into the machine for each can size selection, such that for a certain paint color, paint mixtures prepared in having different sizes contain different respective amounts of bases, and respectively different amounts of pigment paste(s) are required for obtainment of said certain color for each can size i.e. for each base amount. It is obvious that, in order to prepare paint mixtures of different colors, different amounts of pigment paste(s) are to be mixed with a certain volume of a base.
  • Primary object of the present invention is to overcome the abovementioned shortcomings of the prior art.
  • US 5460297 A discloses a paint tinting system including a plurality of colorant dispensing subsystems interconnected with a clear filler dispensing subsystem.
  • This prior art document refers to the problem of volumetric inconsistency at tinting.
  • Recipes maintained within a microprocessor control the dispensing of fixed volumes of colorant into dispensing tubes with such volumes being maintained between volumes of clear filler.
  • Valve actuation introduces the colorant into a can of base paint, along with sufficient clear filler to assure a full measure of paint is generated.
  • the subsystems provide for recirculation of the colorants and clear filler to assure that the same remain homogenous at the time dispensing is required.
  • US 2005/092386 A1 teaches a combination of gravimetric and volumetric fluid dispenser including a scale linked to a controller.
  • the controller is linked to a plurality of two stage valves which control the dispensing of large quantities of base materials.
  • the controller is also linked to a plurality of nutating pumps which together with the controller controls the dispensing of smaller quantities of additive materials.
  • the dispensing system disclosed is particularly useful for paints or other liquid formulations where larger quantities of base materials are added by weight.
  • Another object of the present invention is to provide a tinting method wherein volumetric consistency by preparation of paint mixtures is achieved for a paint of any color.
  • Yet another object of the present invention is to provide a tinting apparatus wherein volumetric consistency by preparation of paint mixtures is achieved for a paint of any color.
  • the present invention proposes a tinting machine pre-programmed for preparation of paint mixtures of various target colors in a paint container having a size selected from a set of various sizes designated for various target volumes of paint mixtures, which target volumes being pre-programmed to said tinting machine; said paint container being pre-loaded with a base having a certain volumetric amount designated in accordance with said size, and said tinting machine comprising a plurality of pigment paste reservoirs for containing pigment pastes having various colors, and for transferring said pigment pastes into paint containers; wherein the tinting machine further comprises a complementary paste reservoir for containing a complementary paste and for transferring said complementary paste into paint containers, such that, in use, the complementary paste is dispersed in a pre-programmed complementary volumetric amount and thereby same final volume of paint mixture is obtained, said final volume is equal to the target volume, and is valid for paint mixtures of all colors.
  • the present invention further proposes a tinting method for preparation of paint mixtures having a final volume, which is valid for all colors.
  • the present invention proposes a tinting method as per the subject-matter of claim 4 and a tinting system comprising a tinting machine as per the subject-matter of claim 1 for preparation of ready-to-use paint mixtures.
  • the present invention proposes a tinting method and machine for preparation of paint mixtures in consistent volumetric amounts, regardless of the color of a ready-to-sell can of paint.
  • Volumetric amount of a paint mixture to be filled into a paint can is pre-determined such that said amount does not exceed the capacity of the paint can; and various respective volumetric amounts are to be pre-determined for each size of paint cans for use in tinting.
  • a tinting machine according to the present invention can be set for preparing paint mixtures to be sold in paint cans in various sizes. In accordance with customer order, a respective paint can having suitable size is selected for loading with paint mixture using the tinting method and machine according to the present invention.
  • a target color pre-programmed to a tinting machine is entered and a selected can size is input to the tinting machine.
  • a can to be used with the tinting method and machine according to the present invention is pre-loaded with a base having a pre-determined volume designated for the size of the can. Said pre-determined volume of base is same for a respective size of paint can, which is to be loaded with paint mixture having a color pre-programmed into the tinting machine.
  • a pre-programmed amount of pigment paste(s) is introduced into the paint can for provision of target color to the paint mixture.
  • the target color may necessitate introduction of one or more pigment paste of pre-calculated volumetric ratio(s) over base, i.e. pre-programmed amounts of said pigment paste(s) are mixed with base having pre-determined base volumes, where applicable.
  • Consistent volume in final product i.e. in the ready-to-sell paint mixture, is obtained by introduction of an amount of a complementary paste into the paint can. Said amount varies for each target color and each can size; and is pre-determined and pre-programmed to the tinting machine; such that paint can having a certain size input/entered into the tinting machine, contains a consistent volume of paint mixture regardless of the target color.
  • Provision of such volumetric consistency is especially of greater importance for paints prepared using a base providing low transparency, and moderate-to-high hiding power to the paints. That is because such high hiding power and low transparency is obtained with titanium dioxide (TiO 2 ) content of a base, which is a significant cost item in paint preparations; and paint preparations with high titanium dioxide content are difficult to remedy in case of ending up with an undesired color.
  • TiO 2 titanium dioxide
  • the properties of the complementary paste are to be compatible with those of the base, and those of the mixture of base and pigment paste(s). This can be achieved with a complementary paste having following preferred features:
  • the complementary paste comprises following ingredients in following weight percentages with respect to the total weight of the compensation paste:
  • the paints with target colors which are light colors (i.e. having a L-value of 85 or higher, with regard to CIELab's lightness scale ranging the lightness between 0 and 100) prepared with admixing of pre-programmed amounts of pigment pastes ranging between 0 and 4% (v/v), more preferably between 0% and 3.5%, based on base volume, wherein the base having a high hiding power (i.e. 98% and higher, at 7 m 2 /L).
  • light colors i.e. having a L-value of 85 or higher, with regard to CIELab's lightness scale ranging the lightness between 0 and 100
  • pre-programmed amounts of pigment pastes ranging between 0 and 4% (v/v), more preferably between 0% and 3.5%, based on base volume, wherein the base having a high hiding power (i.e. 98% and higher, at 7 m 2 /L).
  • said amount of pigment paste ranges between 3% and 6% (v/v), more preferably between 3.5% and 5% (v/v) based on base volume, wherein the base having a moderate hiding power (i.e. a hiding power thereof is at least 50% and lower than 98%, at 7 m 2 /L).
  • Table 1 The volumetric amounts of ingredients used by preparation of samples 1 to 8 prepared according to above explained conventional tinting method are shown in Table 1.
  • Columns 1 to 4 of Table 1 respectively correspond to sample ID numbers each having a respective target color, base volumes (L), total pigment paste volumes (L) to achieve the respective target colors, and total volume of samples obtained by mixing said bases with pigment pastes.
  • final volumes of paint mixtures prepared according to the conventional method differ between target colors. Table 1.
  • Table 2 The volumetric amounts of ingredients used by preparation of samples 1' to 8' prepared with to the method according to the present invention are shown in Table 2.
  • Columns 1 to 5 of Table 2 respectively correspond to sample ID numbers each having a respective target color, base volumes (L), total pigment paste volumes (L) to achieve the respective target colors, complementary paste volumes (L) introduced for achieving a standard sample final volume for each sample; and total volume of samples obtained by mixing said bases with pigment pastes.
  • final volumes of paint mixtures prepared with the method according to the present invention is valid for each target color, thus a consistent target volume is achieved for each sample.
  • Table 2 Table 2.
  • samples 1' to 8' have the same composition, thus in each of said samples a single complementary paste formulation was employed.
  • Each sample ID number (1-8 or 1'-8') corresponds to another target color, and it was tested if samples prepared according to the present invention (samples 1' to 8') show properties comparable with samples prepared using conventional method (samples 1 to 8).
  • dE color difference measured according to the version of DIN6174 valid in 1 February 2015
  • hiding power measured according to the latest Turkish standard method TS EN ISO 6504-3 valid in 1 February 2015
  • gloss measured using Micro TRI Glossmeter by BYK Gardner, according to the latest Turkish standard method TS 4318 EN ISO 2813 valid in 1 February 2015
  • whiteness measured according to the latest Turkish standard method TS 7169 valid in 1 February 2015.
  • Color differences (dE values) obtained for each corresponding sample pair e.g. samples 1 and 1'
  • Table 3 The dE values being in the lower part of the interval 0 and 1 (i.e.
  • Tables 4 and 5 comparatively show average values of several properties of samples prepared using conventional method, and average values of those properties after adding and mixing of complementary paste in a volumetric ratio of 1% based on the volumes of said samples prepared using conventional method.
  • the samples 1 to 4 are interior paints, and samples 5 to 8 are exterior paints.
  • Tables (Table 4 and 5) are prepared separately, since bases employed in preparation of interior and exterior paints are different. Admixing of complementary paste into samples 1-8 in a volumetric ratio of 1% with respect to based on the volumes of said samples prepared using conventional method did maintain the property values acceptable. Table 4. Effects of admixing complementary paste on sample properties (for samples 1 to 4).
  • the present invention proposes a tinting machine pre-programmed for preparation of paint mixtures of various target colors in a paint container having a size selected from a set of various sizes designated for various target volumes of paint mixtures, which target volumes being pre-programmed to said tinting machine; said paint container being pre-loaded with a base having a certain volumetric amount designated in accordance with said size, and said tinting machine comprising a plurality of pigment paste reservoirs for containing pigment pastes having various colors, and for transferring said pigment pastes into paint containers; wherein the tinting machine further comprises a complementary paste reservoir for containing a complementary paste and for transferring said complementary paste into paint containers, such that, in use, the complementary paste is dispersed in a pre-programmed complementary volumetric amount and thereby same final volume of paint mixture is obtained, said final volume is equal to the target volume, and is valid for paint mixtures of all colors.
  • the complementary paste has a pH value ranging between 7 and 9; and the quotient of hiding powers of base and of the complementary paste is within the range between 0.9 and 1.1.
  • the complementary paste is aqueous, and comprises 50 to 70 weight percent of filler with respect to the total weight of the compensation paste.
  • the base is optionally for interior paints, or for exterior paints.
  • the base is a first base having a hiding power of at least 98%, or a second base having a hiding power of at least 50% and lower than 98%.
  • the present invention further proposes a tinting method according to claim 4 for preparation of a ready-to-sell liquid paint mixture in a paint container, said paint mixture having a target color pre-programmed into a tinting machine programmed for preparation of various paint mixtures having different target colors and one or more target volumes.
  • One or more pigment paste is automatically introduced into the paint container prior to or during the step c), and the amount of introduced complementary paste is pre-programmed such that the final volume of the ingredients inside the paint container is equal to target volume, by being the sum of volumetric amounts of pigment paste and base is equal to the difference between the target volume and the volumetric amount of the base.
  • the complementary paste has a pH value ranging between 7 and 9; and the quotient of hiding powers of base and of the complementary paste is within the range between 0.9 and 1.1.
  • the complementary paste is aqueous and comprises 50 to 70 weight percent of filler with respect to the total weight of the compensation paste.
  • a first base is used for preparation of interior paints, and a second base is used for preparation of exterior paints.
  • the base used in the method according to the present invention is selected from a first base having a hiding power of at least 98%, and a second base having a hiding power of at least 50% and lower than 98%.
  • the volumetric amount of pigment pastes preferably range between 0 and 4%, more preferably between 0 and 3.5% based on volume of the first base; and when said second base is used, the volumetric amount of pigment pastes range between 3% and 6%, more preferably between 3.5% and 5% based on volume of the second base.
  • the complementary paste is an aqueous mixture comprising 50 to 70 weight percent of filler with respect to the total weight of said compensation paste.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paints Or Removers (AREA)

Claims (9)

  1. - Système de mise à la teinte comprenant une machine de mise à la teinte qui est préprogrammée pour la préparation de mélanges de peinture de diverses couleurs cibles dans des récipients de peinture ayant une taille choisie parmi un ensemble de diverses tailles désignées pour divers volumes cibles de mélanges de peinture, lesquels volumes cibles étant préprogrammés pour ladite machine de mise à la teinte ;
    le système comprenant en outre un tel récipient de peinture qui est préchargé avec une base ayant une certaine quantité volumétrique désignée en fonction de ladite taille, et
    le système comprenant en outre, dans ladite machine de mise à la teinte, une pluralité de réservoirs de pâte pigmentaire contenant des pâtes pigmentaires ayant diverses couleurs, et agencés pour transférer lesdites pâtes pigmentaires dans des récipients de peinture le système de mise à la teinte comprenant en outre, dans la machine de mise à la teinte, un réservoir de pâte complémentaire contenant une pâte complémentaire aqueuse, et agencé pour transférer ladite pâte complémentaire dans des récipients de peinture, le système étant agencé pour, en utilisation, disperser la pâte complémentaire dans une quantité volumétrique complémentaire préprogrammée et obtenir ainsi le même volume final de mélange de peinture, ledit volume final étant égal au volume cible et étant valable pour des mélanges de peinture de toutes les couleurs ; et
    caractérisé par le fait que la pâte complémentaire comprend de 50 à 70 % en poids de charge par rapport à son poids total, la pâte complémentaire a une valeur de pH située dans la plage entre 7 et 9 ; et le quotient des pouvoirs masquants de la base et de la pâte complémentaire se situe dans la plage entre 0,9 et 1,1.
  2. - Système selon la revendication 1, dans laquelle la base est destinée aux peintures d'intérieur ou aux peintures d'extérieur.
  3. - Système selon l'une quelconque des revendications 1 à 2, dans laquelle la base est une première base ayant un pouvoir masquant d'au moins 98 %, ou une seconde base ayant un pouvoir masquant d'au moins 50 % et inférieur à 98 %.
  4. - Procédé de mise à la teinte pour la préparation d'un mélange de peinture liquide prêt à la vente dans un récipient de peinture, ledit mélange de peinture ayant une couleur cible préprogrammée dans une machine de mise à la teinte dans un système de mise à la teinte, la machine de mise à la teinte étant programmée pour la préparation de divers mélanges de peinture ayant des couleurs cibles différentes et un ou plusieurs volumes cibles par mise en œuvre du procédé comprenant les étapes suivantes :
    a) placer un récipient de peinture pour le transfert de matière de la machine de mise à la teinte dans le récipient de peinture ; ledit récipient de peinture ayant une taille choisie parmi un ensemble de diverses tailles désignées pour divers volumes cibles de mélanges de peinture, et ledit récipient de peinture étant préchargé avec une base ayant une certaine quantité volumétrique désignée en fonction de ladite taille,
    b) le réglage d'une couleur cible et d'un volume cible pour le mélange de peinture à préparer, dans la machine de mise à la teinte,
    c) l'introduction automatique, par la machine de mise à la teinte, d'une pâte complémentaire aqueuse dans le récipient de peinture, ladite pâte complémentaire ayant une quantité préprogrammée désignée pour la couleur cible, de telle sorte que le volume final du mélange de peinture est égal au volume cible, ce qui est valable pour des mélanges de peinture de toutes les couleurs,
    d) mélanger des ingrédients à l'intérieur du récipient de peinture,
    la pâte complémentaire étant dispersée dans une quantité volumétrique complémentaire préprogrammée pour obtenir le même volume final de mélange de peinture, ledit volume final étant égal au volume cible, et étant valable pour des mélanges de peinture de toutes les couleurs, et
    caractérisé par le fait que la pâte complémentaire comprend de 50 à 70 pour cent en poids de charge par rapport à son poids total, et a une valeur de pH située dans la plage entre 7 et 9 ; et le quotient des pouvoirs masquants de la base et de la pâte complémentaire se situe dans la plage entre 0,9 et 1,1.
  5. - Procédé de mise à la teinte selon la revendication 4, dans lequel une ou plusieurs pâtes pigmentaires sont automatiquement introduites dans le récipient de peinture avant ou pendant l'étape c), et la quantité de pâte complémentaire introduite est préprogrammée de telle sorte que le volume final des ingrédients à l'intérieur du récipient de peinture est égal au volume cible, la somme des quantités volumétriques de pâte pigmentaire et de base étant égale à la différence entre le volume cible et la quantité volumétrique de la base.
  6. - Procédé de mise à la teinte selon l'une quelconque des revendications 4 ou 5, dans lequel une première base est utilisée pour la préparation de peintures d'intérieur et une seconde base est utilisée pour la préparation de peintures d'extérieur.
  7. - Procédé de mise à la teinte selon l'une quelconque des revendications 4 à 6, dans lequel la base est choisie parmi une première base ayant un pouvoir masquant d'au moins 98 % et une seconde base ayant un pouvoir masquant d'au moins 50 % et inférieur à 98 %.
  8. - Procédé de mise à la teinte selon la revendication 6, dans lequel la quantité volumétrique de pâtes pigmentaires se situe dans la plage entre 0 et 4 %, de préférence entre 0 et 3,5 %, sur la base du volume de la première base.
  9. - Procédé de mise à la teinte selon la revendication 6, dans laquelle la quantité volumétrique de pâtes pigmentaires se situe dans la plage entre 3 % et 6 %, de préférence entre 3,5 % et 5 %, sur la base du volume de la seconde base.
EP15155116.5A 2015-02-13 2015-02-13 Procédé de teinture et machine de coloration Active EP3056264B1 (fr)

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EP3056264B1 true EP3056264B1 (fr) 2023-05-10

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CN109173827B (zh) * 2018-09-17 2021-02-05 郑州三华科技实业有限公司 汽车修补漆重量体积混合调色方法

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US5083591A (en) * 1989-11-06 1992-01-28 Dunn Edwards, Corp., & Fluid Management Ltd. Part. Process for dispensing liquid colorants into a paint can, and quality control therefor
US5460297A (en) * 1992-03-05 1995-10-24 Abcc/Tech Corp. Paint tinting apparatus
US6991004B2 (en) * 2003-10-30 2006-01-31 Fluid Management, Inc. Combination gravimetric and volumetric dispenser for multiple fluids

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