Foamed thermoplastic resin moulded products used for internal decoration of automobiles, and its prodn. method
A thermoplastic resin and automotive interior technology, which is applied to layered products, vehicle parts, upper structure sub-assemblies, etc., and can solve problems such as cracking of speaker grilles
Inactive Publication Date: 2008-09-17
SUMITOMO CHEM CO LTD
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- Application Information
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Problems solved by technology
[0003] However, there is still a problem, that is, for the speaker grill part composed of mesh or lattice, if the thin lattice frame of the speaker grill is made of foam, and the expansion coefficient of the foam is the same as that of the foam layer of the base part. If the coefficient of expansion is similar or even greater, the speaker grille is easily cracked by the impact
Method used
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[0020] The foamed thermoplastic resin molded article of the integrated loudspeaker net panel for automobile interior of the present invention is made up of two parts: the base part (1) ( figure 1 shown) and speaker grille (2).
[0021] Loudspeaker grilles integrated with the base may either be manufactured from the same material as the base or manufactured separately as a separate molding and fitted with the base, however, the former is preferred.
[0022] This integrated foam thermoplastic resin molding consisting of the base part (1) and the speaker grille (2) can be used on various decorations, such as door trim panels, side trim panels, and various pillars and instrument panels superior.
[0023] The base part (1) has a multilayer structure over almost the entire surface area, forming a surface layer (3) with no or almost no porosity on at least one of its surfaces, which surface will become the forming surface, under the surface layer (3) A foam layer with loose pores i...
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Abstract
The present invention provides a speaker grille-integrated foamed thermoplastic resin molding for automotive interior comprising a base portion and a speaker grille wherein at least the base portion has a foamed layer and the foamed layer in the base portion has a density rho of not greater than 0.7 g / cm3 and an average expansion ratio of the speaker grille is 1 to 1.3 times, said speaker grille-integrated foamed thermoplastic resin molding being lightweight and being strong even in its speaker grille part so that the molding can be used as a speaker grille-integrated foamed thermoplastic resin molding for automotive interior such as a door trim and an instrument panel.
Description
technical field [0001] The present invention relates to a foamed thermoplastic resin molding for an integrated speaker grille for automotive interiors. Background technique [0002] Until now, there has been a strong demand for weight reduction in automotive interiors, and the use of foam moldings is a common weight reduction measure. For example, Japanese Patent JP-A-11-179752 discloses an automotive interior part comprising a foamed polyolefin-based resin molding composed of a skin layer and a foam layer. [0003] However, there is still a problem, that is, for the speaker grill part composed of mesh or lattice, if the thin lattice frame of the speaker grill is made of foam, and the expansion coefficient of the foam is the same as that of the foam layer of the base part. If the coefficient of expansion is the same or even greater, the speaker grille is easily cracked by the impact. Contents of the invention [0004] In view of this, the inventors of the present inventi...
Claims
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IPC IPC(8): B32B5/18B29C44/08B29C44/58B29C45/14B60R11/02B60J5/04B60J5/00B60R11/00B60R13/02
CPCB60R2011/0047B32B5/18B60R2013/0287B60R2011/0021B29C44/583B60R11/0217B29C44/083B60R13/0243Y10T428/24273Y10T428/24595Y10T428/24496Y10T428/24331Y10T428/24521Y10T428/24504
Inventor 船越觉
Owner SUMITOMO CHEM CO LTD