Patent ID: 8453875

Claim:
A method for manufacture of a dispensing device for a liquid, wherein a first material is pretreated at least in areas and wherein a second material is injection-molded directly against the pretreated first material and thus chemically or solidly joined therewith, with the two materials not being joined together in a pretreated area or being detachable from each other in said pretreated area as a result of a pretreatment, wherein the first material is pretreated through an application of a coating, an intermediate layer or a film, and wherein a first component is first injection molded from the first material, wherein the coating or the film is subsequently applied in a desired pretreatment area and wherein, finally, the second material is injection-molded over the coating or the film such that a second component is formed from the second material which is able to detach again from the first component or the coating or the film in the pretreated area and does not lift-off or detach in an area directly covering the first material.