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| Number | Title | Issue Date |
| 8101109 | Solution casting process Solution casting of polymer film (76, 102) is provided. A dope (22, 115-117) containing a polymer of cellulose triacetate and solvent is cast on a casting support band (34, 121) which moves, to form a cast film (69, 122), and then ... | 01/24/2012 |
| 7972547 | Solution casting method A casting dope (27) prepared from CAP, additive and solvent is cast onto a belt (46) and peeled as a wet film (74) that is drawn in the longitudinal direction in a transporting area (80). In a tenter device (47), while the wet film... | 07/05/2011 |
| 7597831 | Solution casting apparatus and solution casting method A dope producing apparatus is provided with a first feed line for sending polymer solution from a fourth tank to a solution casting apparatus. The first feed line is provided with a first orifice for adding dilute liquid to the polymer solution; a first inline mixer... | 10/06/2009 |
| 7470385 | Process for producing cellulose acylate film A cellulose acylate film is produced by using a cellulose acylate solution and forming a film consisting of two or more layers by the co-casting method. The cellulose acylate to be used is selected so that the association molecular weight of cellulose acylate due to... | 12/30/2008 |
| 7470384 | Method of producing of cellulose ester film In order to produce a cellulose ester film constructed of a front layer, an intermediate layer and a rear layer, a dope solution is doped on a supporter. In at least one of the front layer and the rear layer, a mass ratio of a cotton linter to a wood pulp (cotton li... | 12/30/2008 |
| 7455801 | Method of producing film The method of producing a film includes the steps of: casting a dope prepared by dissolving a macromolecular material in a solvent on a casting band; stripping the cast dope from the casting band to form a film; subjecting the stripped film to tentering to stretch o... | 11/25/2008 |
| 7425292 | Thin film with non-self-aggregating uniform heterogeneity and drug delivery systems made therefrom The invention relates to the film products and methods of their preparation that demonstrate a non-self-aggregating uniform heterogeneity. Desirably the films disintegrate in water and may be formed by a controlled drying process, or other process that maintains the... | 09/16/2008 |
| 7410605 | Solution film-forming method The solution film-forming method is provided in which the absolute filtration accuracy for a cellulose acylat solution can be improved and filtration throughput can be increased without reducing the pore size of a filtering material. A dope stock solution to be filt... | 08/12/2008 |
| 7399440 | Cellulose ester film and its manufacturing method Disclosed is a cellulose ester film having a dry thickness of 20 to 60 μm, wherein the cellulose ester film is manufactured according to a solution cast film manufacture process comprising the steps of providing a cellulose ester dope, casting the cellulose ester d... | 07/15/2008 |
| 7361295 | Solvent casting process A process for solvent casting including, casting a dope from a casting die onto a casting support, drying the cast dope on the casting support to form film, stripping off the film from the casting support, and further drying the film, wherein the dope has a solid ma... | 04/22/2008 |
| 7354633 | Retardation film, and polarizing plate and display device using the same A retardation film containing a polyalcohol ester, a polycarboxylic acid ester, and a cellulose ester, wherein a total acylation degree of the cellulose ester is in the range of 2.4-2.8; and a Mw/Mn value of the cellulose ester is in the range of 1.4-3.0, provided t... | 04/08/2008 |
| 7351365 | Solution film-forming method, protective film of polarizing plate, optical functional film, polarizing plate, and liquid crystal display device A solution film-forming method for obtaining the polymer film includes discharging a pressurized polymer solution having a specific temperature from a casting die, casting the polymer solution on a support, solidifying the polymer solution to form a film, peeling an... | 04/01/2008 |
| 7252865 | Protective films containing compatible plasticizer compounds useful in polarizing plates for displays and their method of manufacture Polymer films comprising plasticizer compounds represented by Structure 1 as described in the specification are useful as protective films in polarizing plates for display applications. Methods of manufacturing such polymer films and polarizing plates are also discl... | 08/07/2007 |
| 7250201 | Production method of cellulose film, cellulose film, protective film for polarizing plate, optical functional film, polarizing plate, and liquid crystal display A production method of cellulose film wherein cellulose film is produced by preparing a polymer solution through dissolving cellulose ester in a solvent containing a prescribed organic solvent as the main component, forming a filmy object from the prepared polymer s... | 07/31/2007 |
| 7186107 | Film casting apparatus for use in manufacturing a protective film for a polarizing plate A pipe for supplying a dope to a co-casting die consists of a gooseneck portion connected to a feed block of the co-casting die, and a straight pipe portion connected to the gooseneck portion. The gooseneck portion has a radius of curvature of 50 mm to 400 mm, and t... | 03/06/2007 |
| 7125504 | Optical switch microfilms A method of making a light diffusing microfilm, includes providing a carrier substrate; coating a coating fluid onto the carrier substrate; drying the coating fluid on the carrier substrate to form a releasable light diffusing microfilm on the carrier substrate; and... | 10/24/2006 |
| 7125591 | Hard coat film, production method of the same, polarizing plate and display To provide hard coat films having high hardness, and uniform durability against scratching and high flatness even with a small thickness and a large width, and to provide a method producing the same. The hard coat films are provided with an actinic ray curable resin... | 10/24/2006 |
| 7083752 | Cellulose acetate films prepared by coating methods A method of film fabrication is taught that uses a coating and drying apparatus to fabricate resin films suitable for optical applications. In particular, cellulose acetate films are prepared by simultaneous application of multiple liquid layers to a moving carrier ... | 08/01/2006 |
| 7075606 | Method for manufacturing an optical compensator on a transitional substrate A method for manufacturing an optical compensator (5) on a transitional substrate (8) comprises applying a first orientation layer (20) to the transitional substrate. The first orientation layer (20) is then aligned and a first anisotropi... | 07/11/2006 |
| 7070719 | Cellulose ester film, production method of the same, film employed in liquid crystal display member, and polarizing plate A film employed in a liquid crystal display member is disclosed. The film has film thickness of 20 to 60 μm and variation in the film thickness within ±3.0 percent of the standard film thickness. ... | 07/04/2006 |
| 7060214 | Polymer resin film and its production In the transparent film of optical application or the support for photographic material produced by a solution film forming method, the polymer resin film on which any coating unevenness does not occur even when a functional layer is coated on the film surface and t... | 06/13/2006 |
| 6913724 | Solvent casting process and apparatus therefor A process and apparatus for solvent casting which comprises, casting a polymer solution onto a casting support, cooling the polymer solution to gelatinize on the casting support to form web, stripping off the web from the casting support, thrusting side edges of the... | 07/05/2005 |
| 6887415 | Production method of cellulose film, cellulose film, protective film for polarizing plate, optical functional film, polarizing plate, and liquid crystal display A production method of cellulose film wherein cellulose film is produced by preparing a polymer solution through dissolving cellulose ester in a solvent containing a prescribed organic solvent as the main component, forming a filmy object from the prepared polymer s... | 05/03/2005 |
| 6814914 | Cellulose ester film, its manufacturing method, optical retardation film, optical compensation sheet, elliptic polarizing plate, and image display A manufacturing method of a cellulose ester film satisfying the relationships, Nx>Ny>Nz, and 0.8≦Rt/R0≦3.5, the method comprising casting a cellulose ester dope containing a solvent of a good solvent and a poor solvent on a support to form ... | 11/09/2004 |
| 6767500 | Film formation method capable of preventing fluctuation of ribbon A film is formed by casting a ribbon on a support from a flow cast die while pulling said ribbon toward said support by providing a decompression area. The decompression area is divided into a middle portion, a left portion and a right portion. Degrees of decompress... | 07/27/2004 |
| 6599458 | Cellulose triacetate film and process for producing the same A cellulose triacetate film having a film thickness from 115 to 135 μm and a Z value of 0.3 or less wherein the Z value is a slope (g/° C.) obtained by plotting tear strength against temperature in a range between -20° C. and +23° C., and a process fo... | 07/29/2003 |
| 6582645 | Method for producing cellulose acylate film A method for producing a cellulose acylate film is disclosed. The method comprises the steps of, casting dope containing cellulose acylate on a surface of a metal support, peeling off a web formed by casting the dope from the metal support, contacting sur... | 06/24/2003 |
| 6139785 | Cellulose ester composition The present invention provides a cellulose ester composition, containing 1 to 99% by weight of cellulose triacetate prepared by substituting hydroxyl groups of cellulose with acetyl and having a degree of substitution with acetyl, DSace, which satisfies t... | 10/31/2000 |
| 6054510 | Biodegradable formed article Compositions of the invention include a hydroxy-functional polyester and a natural polymer. Articles can be made from such a composition so as to have sufficiently strong tensile strengths as to form disposable utensils or to have sufficient stretchabilit... | 04/25/2000 |
| 6036913 | Cellulose ester film manufacturing method Disclosed is a method of manufacturing a cellulose ester film, the method comprising the steps of dissolving a cellulose ester and a plasticizer in a solvent containing a cyclic diether solvent to obtain a cellulose ester solution, casting the solution on... | 03/14/2000 |
| 5882565 | Barrier material comprising a thermoplastic and a compatible cyclodextrin derivative A barrier film composition can comprise a thermoplastic web comprising a thermoplastic polymer and a dispersed cyclodextrin composition having substituents that compatibilize the cyclodextrin in the film. The thermoplastic/cyclodextrin film obtains substa... | 03/16/1999 |
| 5800761 | Method of making an interface layer for stacked lamination sizing and sintering An interface layer for separating first and second microelectronic ceramic substrates during firing includes a thermally degradable binder, preferably a polymer, that degrades at temperatures above room temperature and below a firing temperature for the m... | 09/01/1998 |
| 5695694 | Method of producing an acylated cellulose film An acylated cellulose film having a high optical isotropy and uniformity is produced by dissolving an acylated cellulose in a solvent substantially free from water and including, as a principal component, 1,3-dioxolane in a ratio in weight of the acylated... | 12/09/1997 |
| 5690996 | Cross-linked cellulose sponge A cross-linked flexible sponge absorbent medium containing substantially uniformly distributed fibrous reinforcement is prepared under such conditions that swelling of the sponge is controlled to a water retention value of 2 to 6; and simultaneously or su... | 11/25/1997 |
| 5686036 | Process for making a cellulose triacetate photographic film base The invention provides a method of making a cellulose triacetate photographic film base which comprises providing a casting composition of cellulose triacetate, plasticizer, and solvent having a cellulose triacetate and plasticizer concentration of from 3... | 11/11/1997 |
| 5553835 | Method for drying solvent based film Solvent based film is produced in an endless belt casting apparatus (10) in which, within initial compartments (46-52), flows of gas are directed through transversely elongated inlet channels (85i) to contact a layer (36') of polymer and solven... | 09/10/1996 |
| 5529737 | Process for making cellulose triacetate photographic film base A method of making a cellulose triacetate photographic film base which includes delivering a dope solution of from 15 to 35 wt % of cellulose triacetate in dichloromethane based on the total weight of the solution under a pressure of from 7 atmospheres to... | 06/25/1996 |
| 5415752 | Process and device for the manufacture of a microporous membrane gel plate and gel cassette A method and apparatus for fabricating a microporous-membrane for gel plate separating and transferring macromolecules by electrophoresis, the apparatus comprising a peripheral frame (10) provided with a removable bottom plate and including means (54, 58,... | 05/16/1995 |
| 5393476 | Method for producing cellulose ester film A method for producing a film or sheet of a cellulose ester such as cellulose triacetate (TAC), cellulose diacetate, or the like, in which a film-forming solution is extruded through the slot of an extrusion die onto a support while a liquid is dropped at... | 02/28/1995 |
| 5374304 | Special amyloses and their use for producing biodegradable plastics The invention relates to special amyloses for producing biodegradable, clear, transparent and flexible plastic, in particular sheets and films, which a) are swellable, but not soluble, in cold water; b) yield homogenous, flowable quasi-solutions without format... | 12/20/1994 |
