| 摘要 |
A metallic coated plastic component 11 has a metal free region 14, such as an end face 14 of a depending annular wall 13 thereof. Further disclosed is a method of joining the component 11 to a support member 10 which comprises the heating of both in the region of a connection point or points, corresponding for the component 11 to the metal free region thereof 14 and to an area of the support member 10, possibly an annular groove 12 therein, accommodating the wall 13 of component 11. The supporting member 10 may have a welding ring 17 with which a centring edge of the component 11 may cooperate for joining. Both component 11 and support 10 may be formed of thermoplastic material. The heating, which may be effected by ultrasound friction with the support 10 mounted to an anvil 18 and the component 11 agitated by a vibrating punch 19, may permit sealing between component 11 and support 10. The method may result in the formation of an assembly of the component 11 and support 10. The metallic coating may be chromium. The face 14 may have been prevented from taking up the metallic coating with a prior application of metal resistant / repelling laquer. The support member 11 may be the cover hood of an internal combustion engine air filter; a vehicle manufacturers logo or emblem may carried by the component 11 joined to the hood. |
