FR2626236A1 - PROCESS FOR SOUNDPROOFING COMPONENTS OF THE INTERIOR OF THE BODY OF A MOTOR VEHICLE - Google Patents

Abstract

To soundproof components of the interior of the body of a motor vehicle constituted by a plurality of elements assembled together, is applied by direct extrusion to the surface of at least one of said elements, in its zones of contact with another element, an elastomeric plastic material 2 to 8 having soundproofing, sealing and adhesiveness characteristics, and these elements are then assembled together.

Description

The present invention relates to a method

  to soundproof components from inside the car

  bodywork of a motor vehicle, consisting of ume

  plurality of elements assembled together and above

  likely to produce noise by mutual contact.

  The technique currently used for soundproofing

  riser components of the interior of a motor vehicle

  bile of the aforementioned type consists of apulicating in areas

  contact material of the type of self-adhesive felts

  sifs and equivalents, which do not always guarantee

  obtaining the desired effect and which imitate a tra-

  expensive to prepare for cutting to size

  sions as well as for their application.

  The object of the present invention is to provide a method which makes it possible to achieve rapid and efficient soundproofing, while limiting the costs associated with this operation. To this end, the object of the invention is a method characterized in that it comprises the operation consisting of applying by direct extrusion to the surface of at least one of the elements, in its zones of contact with another element. , a thermoplastic polymer material

  which has soundproofing characteristics

  tion, sealing and adhesiveness, and to assemble them-

said elements to each other.

  For the implementation of this process, any extrudable elastomeric material can be used.

  having the above characteristics such as, for example-

  ple, compositions containing butyl rubbers

  and resins / plasticizers from. synthetic nature and reinforcing fillers. It is recommended that the elastomeric material used also has good resistance to temperatures between 400C and

  +120 C, so as to retain elasticity at temperatures

service erasures.

  In particular, the method applies to the inso-

  standardization of plastic components prone to generating a creaking noise between the parts which compose them when they are assembled to each other. Other features and advantages of the

  vention will be better understood on reading the description

  tion that follows, given only as an example

  and referring to the attached drawing, which shows in elevation

  tion before a nlanche of plastic material, designated

  as a whole by 1, for motor vehicle, intended

  born to be fixed to its support not shown. In the drawing, the reference numbers 2 to 8 have designated a plurality of elastomeric report elements in the form of a bead, which are applied by

  direct extrusion in the contact areas of the surface

  that of the board 1 which are intended to be connected to their support elements. Application by extrusion

  can be done by manual or automatic transmission, even

  using a robot. The process lends itself to

  particularly good at being automated.

  Of course, various modifications may be made by those skilled in the art to the process which comes

  to be described, only by way of non-limiting example

  tif, without departing from the scope of the invention. It is thus that any extrudable material can be used provided that it satisfies the desired characteristics of soundproofing, adhesion, at least partial and sealing.

Claims (2)

  RVE aU V v CATIONS 1. Method for soundproofing components of the interior of the bodywork of a motor vehicle, consisting of a plurality of elements assembled together and capable of producing noise by mutual contact, characterized in that he understands the operation   consisting in applying 9ar direct extrusion on the surface   face of at least one (1) of the elements, in its areas of   contact with another element, a polymeric material   extruded plastic (2, 3, 4, 5, 6, 7, 8) which has soundproofing, sealing and adhesiveness characteristics, and then for assembling said elements each other.   2. Method according to claim 1, character-   se in that said elements are made of plastic material than.