Insulating Device for an Exhaust System, Exhaust System, and Method for Producing an Insulating Device

A vehicle exhaust system comprising:

• an exhaust gas-carrying duct;
• and
• an insulating device circumferentially surrounding the exhaust gas-carrying duct, the insulating device comprising a first half shell comprising at least a first connection rim, and a second half shell comprising at least a second connection rim, wherein the first half shell and the second half shell are attached to each other at the first and second connection rims, and wherein the first half shell and the second half shell are connected by a welded joint at the first and second connection rims, and the first and second connection rims are reshaped into a multiple fold, and wherein an insulating material is disposed between the first and second half shells and the gas-carrying duct.

A method for producing an insulating device for at least one of a thermal and acoustic insulation of an exhaust system of a vehicle, comprising a first half shell having at least a first connection rim and a second half shell having at least a second connection rim, comprising the steps of:

• (a) attaching the first and second half shells to each other by welding the first and second connection rims;
• and
• (b) subsequently bending the first and second connection rims to form a multiple fold.