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

A process for blow moulding a vessel (1) comprising pre-forming a heated plastic preform (2) by a gas which is blown into the preform (2) at low pressure of between 2 bar and 15 bar with an accompanying increase in its internal volume and shaping the preform into its definitive final vessel form (1) by ignition of a blown-in, combustible gas by a higher blowing pressure arising during combustion, wherein a precursor material comprising an element selected from the group consisting of silicon, magnesium, aluminum, titanium, zinc, zirconium, boron, cerium, calcium, tin and mixtures thereof is applied to an inner surface of a vessel (1) as prelayer in the form of a gas, vapour or mist, and introducing an oxygen-containing, flammable gas mixture into the vessel and igniting the flammable gas mixture to form a coating comprising a compound selected from the group consisting of silicon oxide, silicon oxynitride, magnesium oxide, aluminum oxide, titanium oxide, titanium nitride, zinc oxide, zirconium oxide, boron oxide, cerium oxide, calcium oxide, tin oxide and mixtures thereof on an inner surface of the vessel.

A process for blow moulding a vessel (1) comprising pre-forming a heated plastic preform (2) by a gas which is blown into the preform at a low pressure of between 2 bar and 15 bar with an accompanying increase in its internal volume and shaping the preform into its final vessel definitive form by ignition of a blown-in, combustible gas by a higher blowing pressure arising during combustion, wherein a precursor material comprising at least one volatile hydrocarbon compound selected from the group consisting of alkanes, alkenes, alkynes, aromatics, alkanols, ethers, aldehydes, ketones, epoxides, organic acids, esters, anhydrides, and mixtures thereof is applied in the form of a gas, vapour or mist as prelayer to an inner surface of the vessel, and introducing an oxygen-containing, flammable gas mixture into the vessel and igniting the flammable gas mixture to form a carbon-based coating on an inner surface of the vessel.

A process for blow moulding a vessel (1) from a heated plastic preform (2) which preform is itself pre-formed by a gas which is blown into the preform at low pressure of between 2 bar and 15 bar with an accompanying increase in its internal volume and the pre-formed preform is then shaped into its definitive form by ignition of a blown-in, combustible gas by the higher blowing pressure arising during the combustion, wherein a precursor material comprising silicon, magnesium, aluminum, titanium, zinc, zirconium, boron, cerium, calcium, tin or 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 a final vessel definitive form by the higher blowing pressure arising during the combustion and simultaneously a coating comprised of silicon oxide, silicon oxynitride, magnesium oxide, aluminum oxide, titanium oxide, titanium nitride, zinc oxide, zirconium oxide, boron oxide, cerium oxide, calcium oxide, tin oxide or mixtures thereof is formed on an inner surface of the vessel.

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