805results about How to "Excellent gas barrier performance" patented technology

Provided are a method for producing a film, which is satisfactory in productivity, exhibits high gas-barrier property immediately after production, and has excellent adhesive strength between constituent layers while maintaining the excellent gas-barrier property, and a gas-barrier film, which is obtained by the method. The method for producing a gas-barrier film includes the steps of; (1) forming an inorganic thin film by a vacuum deposition method on at least one surface of a base film; (2) forming a thin film by a plasma CVD method on the inorganic thin film formed in the step (1); and (3) forming an inorganic thin film by the vacuum deposition method on the thin film formed in the step (2), in which each of the steps (1) and (3), and the step (2) are sequentially carried out at a pressure of 1×10⁻⁷ to 1 Pa, and at a pressure of 1×10⁻³ to 1×10² Pa, respectively.

The present invention relates to a method of fabricating a transparent gas barrier film by using plasma surface treatment and a transparent gas barrier film fabricated according to such method which has an organic/inorganic gradient interface structure at the interface between an organic/inorganic hybrid layer and an inorganic layer. Since the method of the present invention is capable of fabricating a gas barrier film by plasma surface treatment instead of deposition under high vacuum, it can mass-produce a transparent gas barrier film with excellent gas barrier properties in an economical and simple manner. Further, since the transparent gas barrier film fabricated according to the method of the present invention shows excellent gas barrier properties and is free of crack formation and layer-peeling phenomenon, it can be effectively used in the manufacture of a variety of display panels.

This semiconductor laser apparatus includes a package constituted by a plurality of members, having sealed space inside and a semiconductor laser chip arranged in the sealed space, while surfaces of the members located in the sealed space are covered with a covering agent made of an ethylene-polyvinyl alcohol copolymer.

The main object of the present invention is to provide a gas barrier substrate having a high gas barrier property without a ruggedness, a pin hole or the like in the gas barrier layer. The present invention solves the problem by providing a gas barrier substrate having a base material, a planarization layer formed on the base material, and a gas barrier layer comprising a deposition film formed on the planarization layer.

Packaging laminate for packages for liquid foods having excellent liquid and oxygen gas barrier properties in which all included layers are biodegradable. The packaging laminate includes at least one liquidtight layer (11, 13) of homo or copolymers of monomers selected from a group consisting of lactic acid, glycol acid, lactide, glycolide, hydroxy butyric acid, hydroxy valeric acid, hydroxy caproic acid, valerolactone, butyrolactone and caprolactone, as well as an oxygen gas barrier layer (12) of ethylene vinyl alcohol, polyvinyl alcohol, starch or starch derivatives. The oxygen gas barrier layer is preferably applied by a dispersion coating process. The layers may be laminated directly to one another or indirectly by means of interjacent adhesive layers. The packaging laminate may also include a core layer of, for example, paper or paperboard, or a biopolymer. The invention also realises a method of producing the biodegradable packaging laminate according to the invention.

A gas barrier film exhibiting a superior gas barrier property and simultaneously provided with an excellent coating property, a polyurethane resin obtained by adding a polyisocyanate compound containing at least one of an aromatic, aromatic aliphatic, and alicyclic polyisocyanate in an amount of at least 30 wt % of the total polyisocyanate compound, a polyhydroxyalkane carboxylic acid, as necessary a polyol compound containing a C₂ to C₈ polyol ingredient in an amount of at least 90 wt % of the total polyol compound, a chain extender selected from the group comprised of at least one of ammonia, an ammonia derivative, diamine, hydrazine, and a hydrazine derivative, and a neutralization agent and having a total of a urethane group concentration and urea group concentration of 25 to 60 wt % and an acid value of 5 to 100 mgKOH·g⁻¹, a swellable inorganic layer compound, and a polyamine compound having an amine value of 100 to 1900 mgKOH·g⁻¹ formed on one side or both sides of a thermoplastic resin base.

The purpose of the present invention is to provide a gas barrier film having extremely excellent gas barrier property while retaining the film thickness at a predetermined thickness. A gas barrier film having a silicon oxide film formed by the plasma CVD method on the one side or both sides of a base material is provided, the silicon oxide film is characterized in that the film is comprised of the rate of components that the number of oxygen atoms is from 170 to 200 and the number of Carbon atoms is 30 or less to the number of Si atoms of 100, and that further the film has a peak position of IR absorption band based on the stretching vibration of Si—O—Si that exist between 1055 and 1065 cm⁻¹.

The present invention relates to a gas-barrier film laminate capable of greatly reducing the formation of bubbles and impurities between the gas-barrier film layers and having excellent gas-barrier property interlayer adhesiveness.

The gas-barrier film laminate has at least two gas-barrier film layers laminated via an adhesive layer, wherein the gas-barrier film layer has a substrate film, and at least one constitutive unit layer comprising an anchor coat layer and an inorganic thin film layer formed on at least one surface of the substrate film in that order, and wherein the number of the bubbles having a diameter of at least 0.5 mm and the impurities having a diameter of at least 0.5 mm existing between the gas-barrier film layers is at most 3 in total per 100 cm².

In a gas barrier laminate film comprising a base material film containing an inorganic compound and at least one set of inorganic layer and organic layer formed on the base material film, the base material film is formed with a resin having a glass transition temperature of 250° C. or higher. A gas barrier laminate film that has superior durability, heat resistance and gas barrier performance, shows a small difference in coefficient of linear expansion relative to an contiguous layer and can maintain superior gas barrier property even if it is bent is provided.

Disclosed is an encapsulation barrier stack, capable of encapsulating a moisture and/or oxygen sensitive article and comprising a multilayer film, wherein the multilayer film comprises: one or more barrier layer(s) having low moisture and/or oxygen permeability, and one or more sealing layer(s) arranged to be in contact with a surface of the at least one barrier layer, thereby covering defects present in the barrier layer, wherein the one or more sealing layer(s) comprise(s) a plurality of encapsulated nano-particles, the nanoparticles being reactive in that they are capable of interacting with moisture and/or oxygen to retard the permeation of moisture and/or oxygen through the defects present in the barrier layer. The encapsulation of the particles can be obtained by polymerising a polymerisable compound (a monomeric or a polymeric compound with polymerisible groups or) cross-linking a cross-linkable compound on the surface of the reactive nanoparticles.

Disclosed is a gas barrier film alternately comprising at least one inorganic layer and at least one organic layer on a resin base material having a glass transition temperature of 250° C. or higher. The gas barrier film can exhibit superior gas barrier property when it is used in image display devices such as liquid crystal display devices and organic EL devices.

Although an organic resin substrate is highly effective at reducing the weight and improving the shock resistance of a display device, it is required to improve the moisture resistance of the organic resin substrate for the sake of maintaining the reliability of an EL element. Hard carbon films are formed to cover a surface of the organic resin substrate and outer surfaces of a sealing member. Typically, DLC (Diamond like Carbon) films are used as the carbon films. The DLC films have a construction where carbon atoms are bonded into an SP³ bond in terms of a short-distance order, although the films have an amorphous construction from a macroscopic viewpoint. The DLC films contain 95 to 70 atomic % carbon and 5 to 30 atomic % hydrogen, so that the DLC films are very hard and minute and have a superior gas barrier property and insulation performance.

An object such as an automobile part, an image forming apparatus part, a bicycle part, other machine parts, a sport article or its part, a toy or its part, or a rain article or its part has a portion to be in contact with a contact object. The contact portion is made of at least one kind of material selected from a group including polymer material such as resin or rubber as well as glass, and the contact portion has a surface entirely or partially coated with a carbon film (typically, a DLC film) having a wear resistance as well as at least one of a lubricity, a water repellency and a gas barrier property. The carbon film is formed on the object with a good adhesion.

A laminate film including a first polyolefin layer comprising of a blend of 50-95% ethylene-propylene copolymer and 50-5% ethylene polar terpolymer with a polar polymer layer on one side of said first polyolefin resin-containing layer is disclosed. The laminate film could further have additional layers such as a second polyolefin resin-containing layer, a metal layer, or combinations thereof.

A laminate film including a first polylactic acid layer; a second metal-receiving layer including PVOH, EVOH, or a blend thereof on a side of the first polylactic acid layer; and a metal layer deposited on a side of the metal-receiving layer opposite the polylactic acid layer. The metal-receiving layer may be coextruded with the polylactic acid first layer or may be a coating applied to one side of the polylactic acid first layer. This laminate film exhibits excellent gas and moisture barrier properties, appearance, and metal adhesion. It may also include a heat sealable or winding improving layer on the side opposite the metal receiving-layer of the first polylactic acid layer.

An object of the present invention is to provide: a film which is applicable to a tire, has excellent gas barrier properties and bending resistance, allows weight of a tire to be reduced with improving internal pressure retainability of the tire at both the brand-new stage and the used stage thereof, and is capable of demonstrating good gas barrier properties without breaking especially in a running condition at a relatively low temperature in winter time or the like; an inner liner for tire, using the film; and a tire provided with the inner liner for tire. The film of the present invention comprises at least a layer composed of resin composition (D) produced by dispersing viscoelastic substance (C) in a resin containing modified ethylene-vinyl alcohol copolymer (B) obtained by subjecting ethylene-vinyl alcohol copolymer (A) to a reaction, wherein 100% modulus at −30° C. of the viscoelastic substance (C) is smaller than 6 MPa. The inner liner for tire, and the tire, of the present invention are an inner liner for tire, using said film, and a tire provided with said inner liner for tire, respectively.

A gas-barrier laminate comprises a plastic substrate (A), an inorganic thin film (B) formed on at least one surface of the plastic substrate (A), and a polyester-based resin layer (C) formed by applying a coating material containing a polyester-based resin on a surface of the inorganic thin film (B), wherein the polyester-based resin has a glass transition temperature of 50 to 70° C., a molecular weight of 1500 to 15000 and a hydroxyl value of 10 to 60 mg KOH/g, and the gas-barrier laminate has an oxygen permeability of not more than 5 cc/m²/day/atm and a water vapor permeability of not more than 5 g/m²/day. The gas-barrier laminate of the present invention is excellent in printability (in particular, gradation printability), is free from deterioration in gas-barrier property, namely is excellent in gas-barrier property, even after providing a printed layer thereon, and further exhibits an excellent adhesion between the plastic substrate (A) and the inorganic thin film (B) even after being subjected to retort treatments.

An organic electroluminescence display panel includes an organic electroluminescence element and a resin substrate that supports the organic electroluminescence element. A gas barrier laminate is formed between the resin substrate and the organic electroluminescence element. The gas barrier laminate includes two or more inorganic barrier layers and one or more polymer compound layers each provided between the inorganic barrier layers. The exposed parts of the polymer compound layer that are not covered by the inorganic barrier layers are subjected to plasma processing. The exposed parts may be covered by a cover layer or a sealing layer that affords gas barrier properties.