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US 2020/0047470 A1Published application
Exterior silencer for motor vehicle
AssigneeHowa Textile Industry Co., Ltd.
InventorsTakahiro ASAI, Akihiro SHIRAI
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Abstract
A hood silencer includes a back skin layer, a thin film layer, a first shape-retaining layer, a sound-absorbing layer, a second shape-retaining layer, an aeration-suppressing layer, and a front skin layer. The aeration-suppressing layer suppresses oozing of a binder resin out of the surface of the front skin layer from the second shape-retaining layer during the heat forming of the second shape-retaining layer.
Claims20
An exterior silencer for a motor vehicle to be arranged on an exterior portion of a vehicle compartment of the motor vehicle, the exterior silencer comprising:
- a sound-absorbing layer made of a sound-absorbing material;
- a shape-retaining layer formed by binding fibers made of an inorganic material with a binder resin, said shape-retaining layer being laminated on said sound-absorbing layer;
- a front skin layer made of a thermoplastic synthetic resin material and laminated on said shape-retaining layer;
- and
- an aeration-suppressing layer laminated between said shape-retaining layer and said front skin layer,
- wherein said aeration-suppressing layer is formed with nonwoven fabric so as to have a basis weight within a predetermined basis weight range and an airflow quantity within a predetermined airflow quantity range which are suitable for suppressing oozing of said binder resin from said shape-retaining layer upon being molded so as to be formed into a predetermined laminated body by heating and pressing together with said sound-absorbing layer, said shape-retaining layer and said front skin layer.
3 more elements
Dependencies are inferred from the claim text.