Method for blow forming a container made of plastic and for coating the inside of said container

Process for blow moulding a vessel (1) from a plastic preform (2) which, after heating, is pre-formed by a gas which is blown into the vessel (1, 2) at low pressure of between 2 bar and 15 bar with an accompanying increase in its internal volume and is shaped into its definitive form by ignition of a blown-in, combustible gas by the higher blowing pressure arising during the combustion, characterized in that a precursor material on the basis of a silicon, magnesium, aluminium, titanium, zinc, zirconium, boron, cerium, calcium or tin compound or the like or on the basis of mixtures thereof is applied to the inner surface of a moulded article (1,1′) as prelayer in the form of a gas, vapour or mist, then an oxygen-containing, flammable gas mixture is introduced into the moulded article (1, 1′) and ignited and through this combustion, the coating on the basis of silicon oxide, silicon oxynitride, magnesium oxide, aluminium oxide, titanium oxide, titanium nitride, zinc oxide, zirconium oxide, boron oxide, cerium oxide, calcium oxide or tin oxide or the like or on the basis of mixtures thereof is formed on the inner surface of the vessel.

Process for blow moulding a vessel (1) from a plastic preform (2) which, after heating, is pre-formed by a gas which is blown into the vessel (1, 2) at low pressure of between 2 bar and 15 bar with an accompanying increase in its internal volume and is shaped into its definitive form by ignition of a blown-in, combustible gas by the higher blowing pressure arising during the combustion, characterized in that a precursor material which consists of at least one volatile hydrocarbon compound on the basis of alkanes, alkenes, alkines or aromatics, alkanols, ethers, aldehydes, ketones, epoxides, organic acids, esters or corresponding anhydrides, is applied in the form of a gas, vapour or mist as prelayer to the inner surface of a moulded article (1, 1′), an oxygen-containing, flammable gas mixture is then introduced into the moulded article (1, 1′) and ignited and, through this combustion, a carbon-based coating is formed on the inner surface of the vessel.

Process for blow moulding a vessel (1) from a plastic preform (2) which, after heating, is pre-formed by a gas which is blown into the vessel (1, 2) at low pressure of between 2 bar and 15 bar with an accompanying increase in its internal volume and is shaped into its definitive form by ignition of a blown-in, combustible gas by the higher blowing pressure arising during the combustion, characterized in that a precursor material on the basis of silicon, magnesium, aluminium, titanium, zinc, zirconium, boron, cerium, calcium or tin compound or the like or on the basis of mixtures thereof is applied in the form of a gas, vapour, mist or a ductile solid as prelayer to the inner surface of the preform (2) before the pre-forming of the vessel (1) at low pressure, oxygen-containing, flammable gas mixture is then introduced into the preform (2) and ignited, whereby the preform (2) is shaped into its definitive form by the higher blowing pressure arising during the combustion and simultaneously the coating on the basis of silicon oxide, silicon oxynitride, magnesium oxide, aluminium oxide, titanium oxide, titanium nitride, zinc oxide, zirconium oxide, boron oxide, cerium oxide, calcium oxide or tin oxide or on the basis of mixtures thereof is formed on the inner surface of the vessel.

Process for blow moulding a vessel (1) from a plastic preform (2), which is pre-formed after heating by a gas blown into the vessel (1, 2) at low pressure of between 2 bar and 15 bar with an accompanying increase in its internal volume and is then shaped out into its definitive form by blowing in a further gas at higher blowing pressure of between 20 bar and 600 bar, characterized in that a combustible precursor gas is blown into the expanded, shaped out vessel (1) and ignited and through the combustion, a coating is formed on the inner surface of the vessel (1).