Heat-insulating sound-absorbing baffle and production process thereof

Abstract

The invention discloses a heat-insulating sound-absorbing baffle. The heat-insulating sound-absorbing baffle sequentially comprises a bottom plate layer, a first macromolecular film layer, an aluminium silicate layer, a second macromolecular film layer, a support plate layer, a third macromolecular film layer and a face plate layer, wherein the bottom plate layer, the first macromolecular film layer, the aluminium silicate layer, the second macromolecular film layer, the support plate layer, the third macromolecular film layer and the face plate layer are adhered layer by layer; the support plate layer is a light plate layer, preferably a polypropylene hemp fiber plate or a polypropylene honeycomb plate; a fiber porous structure is arranged in the aluminium silicate layer; the bottom platelayer and the face plate layer are aluminum foil layers; the macromolecular film layers are hot melt type adhesive films; and the shapes of the bottom plate layer, the aluminium silicate layer, the support plate layer, the face plate layer, the first macromolecular film layer, the second macromolecular film layer and the third macromolecular film layer are planar or curved. According to the design, glass fibers are not adopted, collapse and deformation are difficult, and the heat insulation and sound absorption effects are strong; and moreover, a connection way has smaller limitation on a layer structure, the rigid support effect is better, the lightweight effect is stronger, and the heat-insulating sound-absorbing baffle is easy to produce and the price performance is higher.

Description

technical field [0001] The invention relates to a heat and sound insulation board for vehicles, which belongs to the field of transportation, in particular to a heat and sound insulation board for automobiles and its manufacturing process, which is specifically suitable for ensuring the heat and sound insulation effect without using glass fiber Avoid collapse deformation caused by high temperature aging. Background technique [0002] The authorized announcement number is CN204532548U, and the utility model patent with the authorized announcement date on August 5, 2015 discloses a sound insulation board, which includes a substrate, a panel, an adhesive foam layer, a glass fiber board and an aluminum silicate fiber layer. The panel is a porous sound-absorbing board, the adhesive foam layer is placed on the substrate, the glass fiber board is placed on the adhesive foam layer, and the aluminum silicate fiber layer is placed on the glass fiber board and the between the above pa...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects and problems existing in the prior art that glass fiber is used, it is easy to collapse and deform, and the connection method has relatively large restrictions on the layer structure, and to provide a layer structure that does not use glass fiber, is not easy to collapse and deform, and the connection method has a relatively large layer structure. Heat-insulating and sound-insulating panel for automobiles with less restrictions and its manufacturing process

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