This effect may be advantageous if one or more of the dyes used is sensitive to light, in particular ultraviolet light. The Quality Index of the dried coating was assessed to be 1. Personenbezogene Daten knnen verarbeitet werden (z. Disperse Red 60 liquid dyestuff, 0.9 parts by weight C.I. The dye diffuses into the swollen polyester film, which is then washed to remove the solvent and dried. Coloured polyester film prepared according to the method of the invention may be adhered to glass and suchlike materials, for example in the form of automobile windows or of flat glass such as is used in domestic and office windows. The stock solution exhibited a viscosity of 2000 centipoise. 3 parts Dispersol Blue C-3R and 97 parts stock solution were mixed to produce a dye mixture having a viscosity of about 2000 centipoise. If cookies are accepted by external media, access to this content no longer requires manual consent. Manufactured films are thick from 8 m to 150 m. 4,065,259 describes a process for exhaust dyeing of disperse dyeable synthetic polymers, for example polyester, for example in the form of film, fibre or fabric, utilising a dye dispersion which comprises a disperse dye and a normally liquid fluorocarbon, for example poly(perfluoropropylene glycol). Alternatively, the film may be dyed with the ultraviolet absorber, preferably according to the method of the invention, further preferably on the side of the film intended in use to be nearer the source of light. In a preferred form of construction, the first (dyed) or preferably the second (undyed) surface of the coloured film is laminated to the unmetallised surface of the metallised film. Preparation of a conventional dye paste having a viscosity of 2000 centipoise or above from disperse dyestuff in powder form may require the use of special mixing apparatus or techniques in order to obtain a homogeneous blend. The coating process is preferably reverse gravure printing. Privacy statement In a further preferred embodiment, the first of said dyestuffs is an ultraviolet absorber and the second of said dyestuffs comprises one or more coloured disperse dyestuffs. Souhlas s tmito technologiemi nm umon zpracovvat daje, jako je chovn pi prochzen nebo jedinen ID na tomto webu. The time of the heating step is preferably in the range 5 to 60 seconds. Intensely coloured films may be obtained by applying the process of the invention more than once to a film. Our long standing experience and competence in the field of manufacturing high quality release papers and films is forming the foundation of our modern and future oriented company. The disperse dyestuff generally penetrates only a relatively small distance into the film in the practice of the process of the invention. The quality of the dyed film (uniformity, in particular freedom from streakiness) was assessed visually by comparison of different samples of film and is quoted as a Quality Index on a scale of 1 (very poor) to 10 (flawless). FLEXSYS AMERICA L.P., OHIO, Owner name: 30, 1996 (now abandoned), which is a continuation of U.S. patent application No. It was further remarkable to find that better quality film in terms of uniformity of colouration and freedom from streaks was obtained when a low viscosity dye paste having a viscosity below 500 centipoise according to the invention was used to coat the film than when a dye paste having a viscosity in excess of 1000 centipoise was used. Shrinkage in the machine direction at a temperature of 180 C. was 1.0% for times in the range 10-30 seconds and 2.0% for a time of 60 seconds. The gravure cylinder used was a standard cylinder of 6 inches diameter being either a 75QCH or a 140QCH (quadrical with channeling) cylinder. The presence of residual solvent in the dyed film may affect subsequent processes such as metallisation. SKCs color-tinted film is a polyester film made by the chip-dyed processing method after color application to the transparent chip that is used as raw material for the film. Nesouhlas nebo odvoln souhlasu me nepzniv ovlivnit urit vlastnosti a funkce. Coloured polyester films exhibiting an optical transmission of less than 20%, less than 10%, less than 5% or around 2 % at an absorption maximum of such a dyestuff component can be readily prepared. B. IP-Adressen), z. Film shrinkage during the heating step was measured. Examples of suitable dye-carriers are phenol, ortho- and paraphenylphenol, diphenyl, chlorinated benzenes and diphenyls, methyl salicylate, benzoic acid and benzyl alcohol. It is known that commercial liquid disperse dyes often contain a swelling agent, for example 10-25% or around 20% ethylene glycol or propylene glycol. Preferably, the second (undyed) surface is metallised. A stock solution of thickener was made by dissolving 2 parts sodium carboxymethyl cellulose (SCMC) in 98 parts water. The SCMC used was Courlose F-350 available from Courtaulds plc. Dimensional stability PET films offer excellent resistance to shrinkage, curling or distortion. A dye paste consists of a disperse dye (for example C. I. Disperse Red 60), 2.5-8% of a high molecular weight thickener (for example sodium alginate, sodium carboxymethyl starch, or hydroxylated guar gum), and water. The dried film was heated at 180 C. for 30 seconds to cause migration of the dyestuff into the film, and washed with water. This form of construction is particularly advantageous in that it provides maximum resistance to fading of the colour. 1.Thefilmisprocessedbythreelayerco-extrusion. For example, in solvent-assisted dyeing a dye bath is made using dyestuff, water and swelling agent. This exhausted layer is preferably removed from the film by washing, preferably with water. Coating was carried out successfully at 100, 200 and 400 ft/min. CITIBANK, N.A., DELAWARE, Free format text: Film speed was equal to roll speed. In one embodiment of the invention, the film passes between the reverse gravure roll and an impression roller. RELEASE OF SECURITY AGREEMENT;ASSIGNOR:CITIBANK, NA;REEL/FRAME:014043/0414, Owner name: The invention provides a process for producing a coloured polyester film including the steps of: (1) providing a dye mixture which has a viscosity of no more than 500 centipoise at ambient temperature and which is a suspension of at least one disperse dyestuff in a solution of a thickener in water; (2) coating said dye mixture onto a polyester film to form a layer; and. The experimental conditions used and results obtained are shown in Tables 3 and 4. Best of 29-48, Ultra fine streaks. Very fine streaks, but slight improvement on trial 5. U.S. Pat. Wir verwenden Cookies und andere Technologien auf unserer Website. Other examples include simple solvents such as the chlorinated hydrocarbons, for example methylene chloride, tetrachloroethane, chloroform or trichloroethylene. Nevertheless, the amount of swelling agent present in the dye mixture and in the film, even when such commercial liquid disperse dyes are used, is very much less when the method of the present invention is used than in prior art solvent dyeing and solvent-assisted dyeing processes, perhaps by a factor of 20 or more. Preferred thickeners may exhibit a viscosity of 2 to 100 centipoise, more preferably 5 to 50 centipoise, measured on a 1% by weight solution of the thickener in water at ambient temperature. 08/443,688, filed May 18, 1995 (now abandoned), which is a continuation of U.S. patent application Ser. The dye mixture may be coated onto the film at ambient temperature. Either or both sides of a film may be dyed by the method of the invention. Slight evidence. The development of colouration after different heating times as mentioned hereinabove may also be monitored by spectroscopic or other measurement of the amount of dye washed off the film in this step. Very streaky with evidence of gels and dye spots. Some disperse dyestuffs are only available commercially in liquid form. PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362. ;REEL/FRAME:024151/0469, RELEASE OF TERM LOAN SECURITY INTEREST IN PATENTS - REEL/FRAME 022610/0697;ASSIGNOR:CITIBANK, N.A. 4.Onesidecoronatreatmentisavailable. The Quality Index of the dyed film was assessed to be 1. B2-20120091-4, Raw Material Price Index for Packaging & Printing. Our PET films offer excellent barrier properties for such environments. The dye mixtures used in Trials 50 and 51 contained 88 parts stock to 12 parts liquid disperse dyestuff and 92 parts stock to 8 parts liquid disperse dyestuff respectively. SHORT-FORM JUNIOR PATENT SECURITY AGREEMENT;ASSIGNOR:SOLUTIA INC.;REEL/FRAME:014683/0683, Owner name: Heat and chemical resistance Applications such as bar code labels, which will be exposed to extreme heat, harsh chemicals or require exceptional barrier performance. Disperse Violet 57 liquid dyestuff, 75 parts by weight of the thickener described in Example 6, and 20 parts by weight IPA. The viscosity of the dye mixture is measured under low shear conditions, for example in an Ostwald viscometer, Brookfield viscometer or Zahn cup. No. Polyester film was dyed to a charcoal shade of 35% transmission either by a solvent-assisted technique (ethylene glycol) according to the prior art or by the method of the invention. Wenn Sie unter 16 Jahre alt sind und Ihre Zustimmung zu freiwilligen Diensten geben mchten, mssen Sie Ihre Erziehungsberechtigten um Erlaubnis bitten. The film may be washed by passage through hot or cold water, preferably hot water. Statistics Cookies record information anonymously. Disperse Blue 60 liquid dyestuff, 88.6 parts by weight of a thickener which was an 1% aqueous solution of CMC and 20 parts by weight IPA. The dye mixtures were coated onto 24 micron thick biaxially oriented polyester film (supplied by Hoechst Diafoil under the Trade Mark Hostaphan 5211) using a gravure printing machine supplied by Inta Roto, Richmond, Va. The disperse dyestuff may in general be any disperse dyestuff having substantivity for polyester. Coloured polyester films may be readily dyed conventionally with the same dyestuffs to obtain an optical transmission of 20%, and with more difficulty of 5%, but it may be necessary to laminate two or more films together to obtain low values of optical transmission. Personenbezogene Daten knnen verarbeitet werden (z. : 26185610, seated on the address Pyelsk 2327/2, Chodov, 149 00 Praha 4. red, green, blue and black each in different thicknesses. After the heating step, the exhausted layer comprises the thickener and any residual dyestuff which has not migrated into the film. This disadvantage can be overcome by the process of the present invention, since no swelling agent is required. Dongguan Yalan Packing Materials Co., Ltd. Longgang Aoxing Packaging Material Co., Ltd. Chaozhou Chaoan Anbu Huiyang Plastic & Paper Factory. Banding could be avoided by proper control of the conditions. 1. Drawingpaper,documents,advertisement,digitalprinting,showboard,etc. CHANGE OF NAME;ASSIGNOR:COURTAULDS PLC;REEL/FRAME:010465/0027, Owner name: Bez pedvoln, dobrovolnho plnn ze strany vaeho Poskytovatele internetovch slueb nebo dalch zznam od tet strany nelze informace, uloen nebo zskan pouze pro tento el, obvykle pout k va identifikaci. Copyright 2019 Alpha Industry Company Limited. Film is unwound from a roll, passed through the bath, heated to fix the dye, washed, dried, and collected on another roll. Outsidecoatingforwrappingboxorbagforfood,medicine,cosmetic,gift,liquoretc. Weitere Informationen ber die Verwendung Ihrer Daten finden Sie in unserer. If the coating is applied to the film in a highly uniform manner, then the heating step may be performed under conditions in which essentially all the dyestuff, for example 95% or 98% or more of the dyestuff, migrates from the layer into the film. Dispersol Blue C-3R exhibited a viscosity of 1200 centipoise measured using a Brookfield viscometer with a No.5 spindle at 20 rpm. The composition may contain 1-6% by weight dyestuff suspended or dissolved in the composition. The opposite side of the film was treated in Trial 94A, and the same side of the film in Trial 94B. RELEASE OF SECURITY INTEREST RECORDED AT REEL/FRAME 014043/0431;ASSIGNOR:ABLECO FINANCE LLC;REEL/FRAME:020417/0386, Free format text: For example, it may be incorporated into the film during its manufacture. Such viscosities are much lower than 500 centipoise. Assignors: CPFILMS INC., FLEXSYS AMERICA L.P., SOLUTIA INC. It is believed that the Quality Index of the film was much better than that of the dried layer only because the layer contained a large excess of dyestuff. Technick uloen nebo pstup, kter se pouv vhradn pro anonymn statistick ely. 2008 - 2018 SHANGHAI CN FILMS COMPANY All Rights Reserved. The presence of excess dyestuff during the heating step assists in providing a level of colouration which is as uniform as possible over the area of the film. AKZO NOBEL UK LIMITED, UNITED KINGDOM, Free format text: With a uniform and vivid color, it is mainly used as the base film for window films of vehicles and construction. The dye is brought into contact with the film which is then heated to cause migration of the dye into the film. The dyestuff may be applied to the film in the form of a uniform layer by any convenient coating or printing expedient, for example a gravure roll. It is an advantage of the present invention that no swelling agent need be present in the dye mixture. In some of these trials, the thickener used was a purified SCMC available from Courtaulds plc under the Trade Mark Courlose F75G. The dye mixtures used exhibited a viscosity of around 14 to 17 seconds measured in a Number 2 Zahn cup, well below 500 centipoise. We use cookies on our website. The coated film was further heated to cause the blue dyestuff to migrate into one side of the film and to cause the red and yellow dyestuffs to migrate into the other side of the film, washed, and dried. AKZO NOBEL UK PLC, UNITED KINGDOM, Free format text: As well as the conventional transparent or white film Laufenberg also offers PET film in various colours e.g. Abychom poskytli co nejlep sluby, pouvme k ukldn a/nebo pstupu k informacm o zazen, technologie jako jsou soubory cookies. The dye mixture may contain a minimum of 0.1% by weight of the thickener, preferably 0.2%, more preferably 0.5%. Dye mixtures which are essentially free of any swelling agent may be preferred in the method of the present invention. One known method of dyeing a polyester film with a disperse dye relies upon swelling the film with an organic solvent. (3) heating said film to cause said dyestuff to migrate from said layer into said film. Assignors: CP FILMS INC., FLEXSYS AMERICA L.P., SOLUTIA INC. This defect has been attributed to the presence of residual swelling agent in the film. PET Transparent Films PET Metallized Films PET Milk White Films PET Rigid Films PETG Sheet/Board, 2.Thickness:Usual:36,50,75,100,125u. The invention accordingly provides in another aspect a coloured polyester film having a first and a second surface, said film being dyed with at least two disperse dyestuffs, at least a first dyestuff of said dyestuffs being substantially all present in a surface region adjacent said first surface, and at least a second dyestuff of said dyestuffs being substantially all present in a surface region adjacent said second surface. The dye mixture may contain a maximum of 20%, preferably 15%, more preferably 10%, by weight of dyestuff on a dry weight basis. The absorber is substantially uniformly dispersed through such a film.