Interior decorative composite board for automobile roof panel

Abstract

The invention specifically relates to an interior decorative composite board for automobile roof panel comprising an intermediate non-woven layer, an upper non-woven layer composited with the upper surface of the intermediate non-woven layer and a lower non-woven layer composited with the lower surface of the intermediate non-woven layer. Weight percentage of the materials used by the intermediate non-woven layer is as follows: jute fiber 48-80%, low melting point fiber 20-52%, and other fiber 0-20% such that the interior decorative composite board for automobile roof panel comprising the intermediate non-woven layer has great strength and excellent breathability and sound-proof effect.

Description

technical field [0001] The invention relates to the field of interior decoration of automobiles, in particular to a composite panel for interior decoration of automobile ceilings. Background technique [0002] With the rapid development of the automotive industry, automotive interior materials are gradually introducing new ones in the direction of green and environmental protection. Traditional automotive interior parts usually use PU board (polyurethane board) or PP (polypropylene) wood powder board, which has the advantages of good formability and high tensile strength, but its air permeability and toughness are poor, and it is not impact resistant. . [0003] Chinese patent document CN201484319U discloses a car headliner trim panel, which comprises a fabric layer, a composite layer and a bottom layer from top to bottom, and the upper and lower sides of the composite layer are respectively attached with An upper glued film and a lower glued film, the fabric layer is bond...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent document CN201484319U discloses a car headliner trim panel, which comprises a fabric layer, a composite layer and a bottom layer from top to bottom, and the upper and lower sides of the composite layer are respectively attached with An upper glued film and a lower glued film, the fabric layer is bonded to the upper glued film of the composite layer, and the bottom layer is bonded to the lower glued film of the composite layer, wherein the glued film is polyethylene, and the The composite layer is made of hemp fiber base material. Although this composite material solves the problem of poor toughness and no impact resistance of the PU board, the polyethylene film layer is used to bond the hemp fiber base material, the bottom layer and the fabric layer. , making it easy to delaminate during use, easy to absorb water and deform; at the same time, the adhesive film layer reduces the overall air permeability of the interior panel

The natural fiber composite board for automotive interiors disclosed in this document makes a composite needle-punched fiber felt by consolidating the required fabric layer, middle layer and rubber surface layer through needle punching, although it avoids the method disclosed in the Chinese patent document CN201484319U The car headliner interior panel is easy to be delaminated by adhesive film bonding, but only 37-45% of the hemp fiber in the middle layer of the composite panel can be degraded, and 35-53% of the polypropylene fiber can be decomposed, while other polyester and other chemical The fiber is not easy to decompose, and it will pollute the environment after being used and discarded; and, for the interior panels of automobiles, the selection of hemp fiber content is related to the air permeability, strength and sound insulation effect of the interior panels of automobiles. Therefore, a reasonable The choice of the amount of hemp fiber, balancing the relationship between the amount of hemp fiber and other materials is a difficult point in the design of automotive interior panels

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