| 摘要 |
In an arrangement, a first unit is designed to withstand higher stresses than the second unit of the arrangement. The first unit is made of a first, high-strength plastic material and carries a connection portion, to which the second unit can be secured in order to form, together with the first unit, a well functioning seal. At the contact portion is applied a second plastic material with lower strength than the first plastic material. Said second plastic material may consist of light and tough plastic of the same type as the second unit. Said second plastic material is mechanically anchored in the first plastic material, and the second unit is joined to the first unit by a welded seam at said second plastic material. <IMAGE> |
