PLASMA SURFACE ACTIVATION METHOD AND RESULTING OBJECT

The invention relates to a method for depositing functional groups on a surface of an object, and to the object treated as such, by generating and maintaining a plasma, bringing the object surface close to or in a space between the plasma electrodes, an atmosphere being present between the two electrodes, and depositing a plurality of functional groups on at least part of the surface of the object, whereby the atmosphere between the two electrodes comprises a multi-functional hyperbranched compound which is a polymer based on ABtype monomers, or a derivative of such polymer, whereby m is at least 2, and A and B are two reactive functional groups selected such that group A is able to react at least m times with group B, and whereby the hyperbranched compound is having a degree of branching (DB) in the range of 10.0-99.9%. 1. A method for depositing functional groups on a surface of an object by generating and maintaining a plasma , said method comprising the steps of:a. bringing the object surface close to or in a space between a first and a second electrode, an atmosphere being present between the two electrodes,b. applying an alternating voltage to the first and the second electrode for generating and maintaining a plasma in the volumetric space between the two electrodes, the voltage alternating between a positive voltage for the first electrode and a zero voltage for the second electrode, and a zero voltage for the first electrode and a negative voltage for the second electrode, andc. depositing a plurality of functional groups on at least part of the surface of the object,{'sub': 'm', 'whereby the atmosphere between the two electrodes comprises a multi-functional hyperbranched compound which is selected from a polymer based on ABtype monomers, a derivative of such polymer, and mixtures thereof, whereby m is at least 2, and A and B are two reactive functional groups selected such that group A is able to react at least m times with group B, and whereby the ...

Atmospheric plasma treatment of reinforcement cords and use in rubber articles

The present invention is directed to a method of making a cord-reinforced rubber article, comprising the steps of A) mixing a carrier gas, a sulfur-containing compound and an alkyne, to form a gas mixture; B) generating an atmospheric pressure plasma from the gas mixture; C) exposing a reinforcement cord to the atmospheric pressure plasma to produce a treated reinforcement cord; and D) contacting the treated reinforcement cord with a rubber composition comprising a diene based elastomer.

Plasma cord coating device

This invention is directed to a plasma cord coating device comprising a pair of opposite and parallel plate electrodes having a first electrode and a second electrode, a pair of planar and parallel dielectric barriers including a first dielectric barrier, and a second dielectric barrier, wherein the first electrode is covered by the first dielectric barrier on a side facing the second electrode and the second electrode is covered by the second dielectric barrier on a side facing the first electrode to form a gap between the first and the second dielectric barriers. This device includes a first foil which extends through the gap and covers the first dielectric barrier and a second foil which extends through the gap and covers the second dielectric barrier to form a plasma treatment zone between the first foil and the second foil.

ATMOSPHERIC PLASMA TREATMENT OF REINFORCEMENT CORDS AND USE IN RUBBER ARTICLES

The present invention is directed to a method of making a cord-reinforced rubber article, comprising the steps of A) mixing a carrier gas, a sulfur-containing compound and an alkyne, to form a gas mixture; B) generating an atmospheric pressure plasma from the gas mixture; C) exposing a reinforcement cord to the atmospheric pressure plasma to produce a coated reinforcement cord; and D) contacting the coated reinforcement cord with a rubber composition comprising a diene based elastomer. 1. A method of making a cord-reinforced rubber article , comprising the steps ofA) mixing a carrier gas, a sulfur-containing compound and an alkyne, to form a gas mixture;B) generating an atmospheric pressure plasma from the gas mixture;C) exposing a reinforcement cord to the atmospheric pressure plasma to produce a coated reinforcement cord; andD) contacting the coated reinforcement cord with a rubber composition comprising a diene based elastomer.2. The method of claim 1 , wherein the cord is selected from the group consisting of steel claim 1 , galvanized steel claim 1 , zinc plated steel and brass plated steel cords.3. The method of claim 1 , wherein the cord is selected from the group consisting of polyamide claim 1 , polyester claim 1 , polyketone claim 1 , rayon claim 1 , and polyaramid cords.4. The method of claim 1 , wherein the sulfur-containing compound is selected from carbon disulfide claim 1 , carbonyl sulfide claim 1 , thiophene claim 1 , dimethyl sulfide claim 1 , diethyl sulfide claim 1 , methyl ethyl sulfide claim 1 , dimethyldisulfide claim 1 , diethyldisulfide claim 1 , methyl ethyl disulfide claim 1 , diphenyldisulfide claim 1 , chloromethyl methyl sulfide claim 1 , thiobenzophenone claim 1 , 1 claim 1 ,3 claim 1 ,5-trithiane claim 1 , and thioformaldehyde.5. The method of claim 1 , wherein the sulfur-containing compound is carbon disulfide.6. The method of claim 1 , wherein the rubber composition is exclusive of cobalt.7. The method of claim 1 , wherein the ...

Composite sheet and method of manufacturing

A method of manufacturing a composite sheet wherein the composite sheet includes at least two outer metal layers and at least one intermediate polymer layer wherein the polymer layer comprises a thermoplastic polymer. The method steps include providing at least a first and a second metal substrate and at least one intermediate polymer layer; coating at least one of the metal substrates with an adhesion promoter layer by plasma coating, wherein plasma coating includes: providing a process gas, generating a plasma, injecting a precursor for providing the adhesion promoter layer into the generated plasma or plasma afterglow, moving or placing the at least one metal strip into the generated plasma or plasma afterglow and depositing a plasma polymerized adhesion promoter layer on the surface of inner side of the metal substrate; and laminating the intermediate polymer layer and the two outer metal layers to build a composite material. 1. A method of manufacturing a composite sheet wherein the composite sheet comprises at least two outer metal layers and at least one intermediate polymer layer wherein the polymer layer comprises a thermoplastic polymer , said method comprising the steps of:providing at least a first and a second metal substrate for providing the outer metal layers and at least one intermediate polymer layer;coating at least one of said metal substrates with an adhesion promoter layer by plasma coating at the inner side of the at least one metal substrate, wherein the plasma is generated at atmospheric pressure and wherein the inner side of the at least one metal substrate has contact with the at least one intermediate polymer layer, providing a process gas,', 'generating a plasma,', 'injecting a precursor for providing the adhesion promoter layer into the generated plasma or plasma afterglow,', 'moving or placing the at least one metal substrate into the generated plasma or plasma afterglow, and', 'depositing at least in parts a plasma polymerized ...

Device for the continuous supply of a liquid compound and related method

A device for continuous supply of a liquid compound comprises a feed port (2) configured for connection to a discontinuous supply (3) of the liquid compound, a compound vessel (4) comprising a compound inlet (5) and a compound outlet (6), a first supply line (7) connecting the feed port (2) to the compound inlet (5), a closure member (8) configured to open and close the first supply line (7), an outlet port (11) for connection to the processing unit, and a second supply line (12) connecting the compound outlet (6) to the outlet port (11). The second supply line (12) comprises a flow controller (13) for measuring and controlling a flow of liquid compound through the second supply line. The flow controller allows to provide a very stable, continuous supply of liquid compound to the outlet port, and avoids the need to use moving parts, such as pumps, for the supply of the liquid compound.

Laser cladding of a thermoplastic powder on plastics

A method of applying a coating (17) of a thermoplastic material on a substrate (11) made of a polymeric material, wherein said thermoplastic material and said polymeric material are incompatible, comprising the following steps. Firstly, exposing the substrate and/or the powder to a plasma discharge (12) or the reactive gas stream resulting therefrom in order to obtain a plasma treated surface layer (14) introducing compatibility at the interface between substrate and coating. Secondly, laser cladding (15) the powder (16) on the substrate in order to form a coating on the substrate.

Laser cladding of a thermoplastic powder on plastics

A system and method for manufacturing three-dimensional structures

System and method for manufacturing three-dimensional structures

A system and method for manufacturing three-dimensional structures is provided. The system comprises a plurality of printing stations for performing parallel printing in an confined space enclosed by a housing, wherein each printing station comprises a carrier, a deposition unit with at least one nozzle arranged for dispensing filaments of build material paste through an opening area thereof and a station controller configured to operate the deposition unit for deposition of filaments of a build material paste on the carrier in an interconnected arrangement in a plurality of stacked layers in order to form one or more three-dimensional structures, the at least one nozzle and the detachable carrier being relatively moveable with respect to each other, wherein the deposition unit is coupled to a reservoir unit configured to house the build material paste, wherein the reservoir unit includes at least one reservoir arranged outside of the confined space.

A system and method for manufacturing three-dimensional structures

Method for applying a protective layer to an alkali metal or alkali metal alloy surface, and article comprising such protective layer

The present invention is related to a method for applying a protective layer on at least part of an exposed alkali metal or alkali metal alloy substrate, the method comprising activating a gas by means of a plasma discharge to obtain an activated gas and contacting the exposed surface with the activated gas, wherein a protective layer is formed on at least part of the exposed surface, wherein the gas comprises a nitrogen-comprising compound in an amount, such that the protective layer comprises at least 60 mol% of a corresponding alkali metal nitrate. The invention is further related to an article, comprising substrate having a surface comprising an alkali metal or alkali metal alloy and a protective layer arranged on at least part of the alkali metal or alkali metal alloy surface of the substrate, wherein the protective layer is conductive to ions of the corresponding alkali metal and comprises at least 60 mol% of a corresponding alkali metal nitrate.

Composite sheet and method of manufacturing

The invention relates to a method of manufacturing a composite sheet (5), in particular a sandwich sheet, wherein the composite sheet (5) comprises at least two outer metal layers (1, 2) and at least one intermediate polymer layer (3) wherein the polymer layer comprises a thermoplastic polymer. The object is to provide a method for manufacturing composite sheets, in particular sandwich sheets which allows an economical way of production and with which sandwich sheets comprising the steps of: • providing at least a first and a second metal substrate for providing the outer metal layers (1, 2) and at least one intermediate polymer laye (3); • coating at least one of said metal substrates with an adhesion promoter layer by plasma coating (4) at the inner side of the at least one metal substrate, wherein the inner side of the at least one metal substrate has contact with the at least one intermediate polymer layer, wherein plasma coating includes: providing a process gas, generating a plasma, injecting a precursor for providing the adhesion promoter layer into the generated plasma or plasma afterglow, moving or placing the at least one metal strip into the generated plasma or plasma afterglow and depositing at least in parts a plasma polymerized adhesion promoter layer on the surface of inner side of the at least one metal substrate; and • laminating the at least one intermediate polymer layer and the two outer metal layers to build a composite material (5).

Antimicrobial and/or antiviral polymer surfaces

The present invention relates to a method for preparation of polymer, preferably a polyurethane, having improved antibacterial properties and/or antiviral properties comprising: a) providing a polymer substrate having a surface; b) generating a plasma under near atmospheric conditions by passing a carrier gas through an excitation zone and by applying high frequency alternating current to an electrode positioned in the excitation zone to produce a dielectrical barrier discharge thereby generating an atmospheric plasma; c) generating a precursor material aerosol in a separate zone by using an atomiser gas or providing a gaseous precursor material, wherein the precursor material is a compound capable of forming radicals when in contact with an atmospheric plasma and which comprises at least one amine function; d) treating at least a part of the polymer substrate surface provided according to (a) with the atmospheric plasma generated according to (b) and the precursor material aerosol generated according to (c) or the gaseous precursor material provided according to (c) thereby depositing a reaction product of the precursor material at least on a part of the polymer substrate surface. The present invention also relates to a polymer substrate having deposited on its surface a reaction product of a precursor material obtained or obtainable by this method and to the use of the polymer having improved antibacterial properties and/or antiviral properties or of the polymer having improved antibacterial properties and/or antiviral properties obtained or obtainable by the method for medical applications, antibiofouling applications, hygiene applications, food industry applications, industrial or computer related applications, consumer goods applications and appliances, public and public transport applications, underwater, water sanitation or seawater applications.

A system and method for manufacturing three-dimensional structures

A system and method for manufacturing three-dimensional structures is provided. The system comprises a plurality of printing stations for performing parallel printing in an confined space enclosed by a housing, wherein each printing station comprises a carrier, a deposition unit with at least one nozzle arranged for dispensing filaments of build material paste through an opening area thereof and a station controller configured to operate the deposition unit for deposition of filaments of a build material paste on the carrier in an interconnected arrangement in a plurality of stacked layers in order to form one or more three-dimensional structures, the at least one nozzle and the detachable carrier being relatively moveable with respect to each other, wherein the deposition unit is coupled to a reservoir unit configured to house the build material paste, wherein the reservoir unit includes at least one reservoir arranged outside of the confined space.

A system and method for manufacturing three-dimensional structures

Method for applying a protective layer to an alkali metal or alkali metal alloy surface, and article comprising such protective layer

A method is disclosed for applying a protective layer on at least part of an exposed alkali metal or alkali metal alloy substrate. The method includes activating a gas using a plasma discharge to obtain an activated gas and contacting the exposed surface with the activated gas. A protective layer is formed on at least part of the exposed surface. The gas has a nitrogen-comprising compound such that the protective layer includes at least 60 mol % of a corresponding alkali metal nitrate. The present disclosure is further related to an article including a substrate having a surface including an alkali metal or alkali metal alloy and a protective layer arranged on at least part of the alkali metal or alkali metal alloy surface of the substrate. The protective layer is conductive to ions of the corresponding alkali metal and has at least 60 mol % of a corresponding alkali metal nitrate.

A system and method for manufacturing three-dimensional structures

Method for applying a protective layer to an alkali metal or alkali metal alloy surface, and article comprising such protective layer

The present invention is related to a method for applying a protective layer on at least part of an exposed alkali metal or alkali metal alloy substrate, the method comprising activating a gas by means of a plasma discharge to obtain an activated gas and contacting the exposed surface with the activated gas, wherein a protective layer is formed on at least part of the exposed surface, wherein the gas comprises a nitrogen-comprising compound in an amount, such that the protective layer comprises at least 60 mol% of a corresponding alkali metal nitrate. The invention is further related to an article, comprising substrate having a surface comprising an alkali metal or alkali metal alloy and a protective layer arranged on at least part of the alkali metal or alkali metal alloy surface of the substrate, wherein the protective layer is conductive to ions of the corresponding alkali metal and comprises at least 60 mol% of a corresponding alkali metal nitrate.

System do wytwarzania i sposób wytwarzania struktur trójwymiarowych

System do wytwarzania i sposób wytwarzania struktur trójwymiarowych