| 摘要 |
<p num="1"><br/><br/><br/>A milking device according to the invention comprises at least a teat-<br/>receiving flexible sleeve, adapted to be positioned on/over a teat. A first <br/>portion thereof comprises a material, selected from the group consisting of <br/>thermo-plastic elastomers (TPE), as defined in ISO 18064, and a second portion <br/>thereof comprises a material selected from the group consisting of <br/>thermoplastics. The method of making a milking device, in particular a teat <br/>cup liner, is a molding process carried out in two or more steps. In the first <br/>step, a thermoplastic, preferably polypropylene (PP) or polyamide (PA), is <br/>injected in a mold defining only those portions of the device that are to <br/>exhibit a higher stiffness or rigidity, such as couplings. The stiffer parts, <br/>are demolded from the mold, and placed in a second mold, into which, as a <br/>second molding step, a suitable TPE is injected. Further steps can be <br/>performed if required by the design.<br/>
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