A method for coating a textile hose with a thermoplastic sealing material, in particular polyurethane-based, in a coating device, wherein the textile hose has a longitudinal direction and a circumferential direction and is manufactured continuously in the longitudinal direction and in the circumferential direction, in particular is formed from a tubular knit hose, wherein the textile hose is fed to the coating device and is continuously drawn from top to down onto a mandrel extending in the longitudinal direction and approximately in the vertical direction and is continuously transported further downwards over this mandrel, wherein the mandrel is supported and oriented in the correct position by at least one support means provided outside the textile hose, wherein the support means comprises a pair of support rollers (12, 24) and the mandrel is arranged and extended above the pair of support rollers so that it is supported on the pair of support rollers with a lower longitudinal end which at least partially absorb a weight force of the mandrel, wherein the thermoplastic sealing material is provided in a heated flowable state and is fed continuously to an entire outer circumference of the textile hose which is continuously transported over the mandrel such that some of the thermoplastic sealing material can penetrate into the textile hose and/or can adhere to the outer circumference of the textile hose and forms a closed superficial coating, wherein the textile hose coated in this way is then continuously drawn off downwards from the mandrel, and wherein the mandrel, in the longitudinal direction between a lower and an upper longitudinal end and in an area of the mandrel, which is arranged before coating the textile hose, has a cross-sectional change so that a support collar is formed as a result, and wherein the mandrel is supported on the support collar by a further support means, provided outside the textile hose in addition to support of the mandrel at its lower end. wherein the textile hose is fed to the coating device and is continuously drawn from top to down onto a mandrel extending in the longitudinal direction and approximately in the vertical direction and is continuously transported further downwards over this mandrel, wherein the mandrel is supported and oriented in the correct position by at least one support means provided outside the textile hose, wherein the support means comprises a pair of support rollers (12, 24) and the mandrel is arranged and extended above the pair of support rollers so that it is supported on the pair of support rollers with a lower longitudinal end which at least partially absorb a weight force of the mandrel, wherein the thermoplastic sealing material is provided in a heated flowable state and is fed continuously to an entire outer circumference of the textile hose which is continuously transported over the mandrel such that some of the thermoplastic sealing material can penetrate into the textile hose and/or can adhere to the outer circumference of the textile hose and forms a closed superficial coating, wherein the textile hose coated in this way is then continuously drawn off downwards from the mandrel, and wherein the mandrel, in the longitudinal direction between a lower and an upper longitudinal end and in an area of the mandrel, which is arranged before coating the textile hose, has a cross-sectional change so that a support collar is formed as a result, and wherein the mandrel is supported on the support collar by a further support means, provided outside the textile hose in addition to support of the mandrel at its lower end.