摘要:
A treater system includes a conductive roller electrode that supports a moving web that is to be treated. One or more active electrode assemblies mounted to support headers have a pair of active electrodes that are positioned to treat one surface of the web as the web passes over the roller electrode. Air or a gas/gas mixture can be selectively piped to a chamber adjacent the active electrodes and diffused along the length of the discharge surfaces to allow the treater to operate in three distinct modes: corona, chemical corona and atmospheric plasma. The active electrodes are cooled by passing air into and through tubular bodies of the active electrodes.
摘要:
The invention concerns a process for in-mould labelling of an article with a film, wherein at least a first surface of the film is plasma treated. The invention also concerns in-mould labelled articles obtainable by the process of the invention.
摘要:
Ein Verfahren zur Oberflächenbehandlung eines Substrats (28) mittels einer elektrischen Korona-Entladung, wobei in den durch einen zwischen einer Korona-Elektrode und dem Substrat (28) gebildeten Wirkspalt definierten Entladungsbereich während der Entladung Aerosole (5) gesprüht werden, ist so ausgebildet, dass das Sprühen der Aerosole (5) im Wesentlichen entgegen der Schwerkraftrichtung erfolgt.
摘要:
A blow molded container (10) having barrier properties and including an upper wall portion having an opening (13), an intermediate sidewall portion (14) positioned beneath the upper wall portion (12); and a base portion (16) positioned beneath the intermediate sidewall to support the container. The container includes a molded outer layer (24) having an inner surface (22) and an outer surface formed from at least 40% of recycled plastic, and a carbon coating formed on the inner surface of the outer layer (26) and adhered thereto and substantially coextensive with the outer layer, wherein said carbon coating has a thickness of less than about 10 microns.
摘要:
Un procédé de traitement de surface de substrats polymères au cours duquel le substrat est soumis à une décharge électrique à barrière diélectrique de type filamentaire, dans un mélange gazeux de traitement comportant au moins un gaz porteur et un gaz actif, à une pression sensiblement égale à la pression atmosphérique, se caractérisant en ce que le gaz actif est choisi dans le groupe comprenant au moins un hydrocarbure mono-insaturé ou poly-insaturé, linéaire ou ramifié, ayant préférentiellement 2 à 10 atomes de carbone, plus préférentiellement 2 à 5 atomes de carbones, encore plus préférentiellement 2 ou 3 atomes de carbones, la teneur résiduelle en oxygène du mélange de traitement étant inférieure à 250 ppm, préférentiellement inférieure à 100 ppm, et encore plus préférentiellement inférieure à 50 ppm.
摘要:
Le substrat en polyoléfine est soumis à une décharge électrique à barrière diélectrique dans un mélange gazeux de traitement comportant un gaz porteur et un gaz actif, à une pression de traitement sensiblement égale à la pression atmosphérique. Le gaz actif du mélange gazeux est l'ammoniac, l'hydrazine ou un mélange d'ammoniac et d'hydrazine, la teneur dudit gaz actif dans le mélange de traitement étant comprise entre 50 et 2000 ppm en volume. Application au domaine de l'impression de films continus en polyoléfine par un enduit (encre, vernis) en particulier à base aqueuse, notamment pour l'emballage.
摘要:
The invention concerns a method for the surface treatment of polymeric substrates whereby the substrate is subjected to a dielectric barrier electrical discharge, in a gaseous mixture comprising a carrier gas, and a reducing and/or oxidising gas, at a pressure substantially equal to atmospheric pressure. The invention is characterised in that it comprises the following implementing conditions: when the mixture comprises an oxidising gas, the oxidising gas content in the mixture ranges between 50 to 2000 ppm by volume; when the mixture comprises a reducing gas, the reducing gas content in the mixture ranges between 50 to 30000 ppm by volume.
摘要:
Methods and systems utilize an atmospheric-pressure nitrogen dielectric-barrier discharge to treat the surface of polymer substances. The atmospheric-pressure nitrogen dielectric-discharge may be maintained with a level of H 2 O below a pre-defined amount, such as by measuring and controlling the H 2 O within a treater, to produce a surface treatment for a polymer substance that yields desirable characteristics. Furthermore, the H H 2 O level may be measured and controlled according to a pre-defined amount or according to another parameter such as an analysis of the resulting polymer surface. For example, the polymer surface may be provided with an optimal added nitrogen-to-added oxygen ratio and/or an optimal stability based on washed and unwashed advancing contact angles such as by controlling the H 2 O level within the treater based on these analyses of the treated polymer.
摘要:
A heat-shrinkable resin film which has a heat shrinkage in the maximum shrinkage direction of 20% or higher when a 10 cm by 10 cm square sample cut out thereof is immersed in 85°C water for 10 seconds, pulled out, subsequently immersed in 25°C water for 10 seconds, and then pulled out, characterized in that the content of nitrogen atoms in a film surface is 0.1 to 3.0% and the film surface has a wet tension of 36 mN/m or higher; and a film roll obtained by winding up the heat-shrinkable resin film, characterized in that when the rolled film is sampled at a first sampling part located up to 2 m apart from the end of the rolled film and at other sampling parts located after the first sampling part at intervals of about 100 m and the average nitrogen content of each sample is calculated, then the nitrogen content of each sample is within the ±0.8% range based on that average nitrogen content.
摘要:
In this dry surface treatment method for at least one surface portion (24) of an object, a gas is passed through an apparatus (26) forming excited or unstable gas species and the said surface portion (24) is brought opposite the outlet of the said device (26) to be treated by the said excited or unstable gas compounds, the secondary gas delivered at the outlet is then sucked by venturi effect and re-injected into the apparatus.