Moulded multilayer lining for heat and sound insulation

An article of manufacture, useful as a lining for heat and sound insulation, comprising:

• a first layer, having a thickness and a pair of opposing faces as a first reinforcement layer, the first layer comprising:
• a web of a plurality of reinforcement fibers, the individual reinforcement fibers of the web crossing over each other;
• and
• a polyamide matrix material, distributed within the web, wherein the polyamide matrix material exhibits a first melting point as measured by differential scanning calorimetry, and a second melting point, when in the presence of saturated pressurized steam, which is lower than the first melting point;
• and
• a second layer, also having a thickness and a pair of opposing faces comprising a material selected for further enhancing the heat and sound insulation provided by the article, wherein the material is an open cell foam layer, a heat reflective layer, or a second reinforcement layer having different materials than the first reinforcement layer;
• wherein the polyamide matrix material distributed within the web forms the web into a porous first reinforcement layer joined to the second layer on adjacent faces of the first and second layer via exposure of the adjacent faces to a saturated pressurized steam at a temperature reaching the second melting point and below the first melting point.