发明授权
- 专利标题： DISPOSITIF DE FILTRATION, NOTAMMENT POUR VEHICULE AUTOMOBILE, PROCEDE DE FABRICATION TEL DISPOSITIF DE FILTRATION ET DISPOSITIF POUR LA MISE EN OEUVRE DU PROCEDE
- 专利标题（英）： Filtering device, in particular for motor vehicle, method for making same and device therefor
- 专利标题（中）： 过滤装置，特别是用于汽车，用于制备这种过滤装置和设备用于实施过程
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申请号： EP01976349.9申请日： 2001-10-02
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公开(公告)号： EP1235629B1公开(公告)日： 2008-04-30
- 发明人: DEWITTE, Jean-Marc , SIMON, Olivier
- 申请人： Valeo Matériaux de Friction
- 申请人地址： Zone Industrielle Nord Rue Thimonier 87020 Limoges cedex 9 FR
- 专利权人： Valeo Matériaux de Friction
- 当前专利权人： Valeo Matériaux de Friction
- 当前专利权人地址： Zone Industrielle Nord Rue Thimonier 87020 Limoges cedex 9 FR
- 代理机构： Lemaire, Marc
- 优先权： FR0012615 20001003; FR0106825 20010523
- 国际公布： WO2002028508 20020411
- 主分类号： B01D46/52
- IPC分类号： B01D46/52 ; B29C65/18 ; B60H3/06
摘要：
The invention concerns a filtering device comprising a filtering medium (3) in the form of a mat and at least a thermoplastic grid (4), the method for making same comprising a step which consists in stacking the medium (3) and the grid (4), a step which consists in fixing those two elements and a step which consists in pleating said two stacked elements. The fixing step consists in locally producing in targeted manner at least a weld seam by ultrasound fusion, said fixing step being carried out between the stacking step and the pleating step. The invention is applicable to a motor vehicle.
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