The invention relates to a sound protection panel for cladding a wall of an automotive vehicle, the panel includes a mass-spring system. The panel has a lower spring layer based on a resiliently compressible material, an upper mass layer based on resiliently compressible foam flakes, the flakes being bound together by a two-component fibre-based bonding agent comprising a core. The core is fusible at a high temperature or infusible, and a sheath fusible at a lower temperature, the flakes being fused with the sheath to form an upper agglomerated layer.

The invention disclosed herein is an automotive acoustic panel including a porous sound-absorption material made from a polymer and an expanded perlite. One or more silane compounds may be coupled or coated onto the expanded perlite while a coupling agent and a chemical foaming agent may additionally be added to the automotive acoustic panel.

The present invention addresses the problem of providing a sound insulating structure which provides a sufficient sound insulating effect even when an adhesive layer is arranged therein, and in which a shift in the frequency band where the sound insulating effect is generated is unlikely to occur. This sound insulating structure includes, at least: a sound insulating member that includes a sheet-like sheet section and plural projections arranged on the sheet section; and an adhesive layer arranged on a surface of the sheet section on the opposite side of the side provided with the projections, and the sound insulating structure satisfies the following Formula (1): E_glue/I_glue>0.5×(E_membrane/H)(1) (wherein, E_glue (MPa): storage modulus of adhesive layer, I_glue (mm): average thickness of adhesive layer, E_membrane (MPa): storage modulus of sheet section and projections, and H (mm): average height of sheet section and projections).

The present invention provides a vehicle body soundproof structure Sp that is configured to block noise from outside a vehicle, and comprises a window panel 24 fixed in a window frame 22 located on a side portion of a vehicle body 10, an interior material 50 provided at a vehicle interior side of the window frame 22 and having an upper end portion 52 extending diagonally upward in a direction toward the window panel 24, and a soundproof member 60 fixed to the upper end portion 52 of the interior material 50. The soundproof member 60 is provided in contact in a compressed state with an inner surface of the window panel 24 so as to fill a gap G formed between the upper end portion 52 of the interior material 50 and the window panel 24.

It is described a metamaterial sound insulation device, with improved efficiency in dampening sound transmission across it compared to a traditional sound insulation device having comparable size and weight. The device is especially adapted for sound insulation in the automotive field.

Disclosed are a fiber for a sound-absorbing material for vehicles and a sound-absorbing material for vehicles including the same. The cross-section of the fiber for a sound-absorbing material includes a first end portion, a second end portion spaced apart from the first end portion, and an intermediate portion connected to the first end portion and the second end portion. The intermediate portion includes at least three bent portions. Each of the first end portion and the second end portion has a width larger than the width of the intermediate portion.

A vehicle body lateral section structure (10) is provided with a center pillar inner (41), a center pillar stiffener (42), a partitioning member (13), a filling material, a center pillar outer (43), and a sound insulation member (14). The center pillar stiffener forms a first closed cross-sectional portion (50) together with the center pillar inner. The partitioning member partitions a filling space (62) communicating with a first filling port and a second filling port inside the first closed cross-sectional portion. The center pillar outer forms a second closed cross-sectional portion (60) together with the center pillar stiffener. The sound insulation member is provided inside the second closed cross-sectional portion and foams when heated.

A flat motor vehicle composite structure component, comprising a metal sheet component having a shaped metal sheet and to which at least one flat, inherently rigid reinforcement component of porous plastic is connected on at least one side of the metal sheet, the surface of the reinforcement component is adhesively connected to a side of the metal sheet component which, in the fully installed state, is intended to face a motor vehicle functional space.

A vehicle having a space filling panel including a polystyrene layer, a polyurethane layer, and a polyethylene cover where the polyethylene cover forms a vacuum sealed space. The polystyrene layer and the polyurethane layer are both positioned in the polyethylene cover's vacuum sealed space. In another embodiment, a space filling panel for a vehicle includes a polystyrene layer comprising a plurality of polyurethane chips. The polystyrene layer having the plurality of polyurethane chips is enclosed in a vacuum sealed space formed by a polyethylene cover.

Disclosed herein are a metal-polymer laminate structure having an enhanced flame protection function as well as a method for preparing the same. The metal-polymer laminate structure includes a metallic layer, at least one polymeric layer provided on the metallic layer, and a backing layer provided on the at least one polymeric layer. The at least one polymeric layer includes an intumescent material, and a first functional layer is interposed between the metallic layer and the at least one polymeric layer. The first functional layer is a thermoplastic layer constructed from a material selected from polyamide, thermoplastic polyurethane, hotmelts, preferably polyamides such as PA6, PA6/6.36, PA6/66, PA12, PA6.12, PA6.10, PA6I/6T, copolymers of caprolactam or lauryllactam, thermoplastic polyurethane, and polyether block co-polyamides or combinations thereof.